Correction Method, Apparatus, and Storage Medium for Transmission Channel Delay

Abstract

[0010] Embodiments of the present disclosure provide a method, apparatus, and storage medium for correcting transmission channel delay, the method including receiving transmission channel delay (Tx Delay) parameter information transmitted from a transmitting node, transmitting positioning reference signal configuration information to a receiving node, and correcting positioning measurements based on the Tx Delay parameter information, where the positioning measurements are obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal configuration information. By utilizing the transmission channel delay (Tx Delay) parameter information, the embodiments of the present disclosure can eliminate the influence of transmission channel delay on time-related positioning measurements, thereby effectively improving positioning accuracy.

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application filed on August 7, 2020, with the application number 2020107911190 and the invention title "Method, Apparatus, and Storage Medium for Correcting Transmission Channel Delay", the entire content of which is incorporated herein by reference.

[0002] The present disclosure relates to the technical field of communications, and in particular, to a method, apparatus, and storage medium for correcting transmission channel delay.

Background Art

[0003] 3GPP (the 3rd Generation Partnership Project) has introduced a plurality of methods for measuring a positioning reference signal and performing positioning using a measurement value related to the arrival time of the obtained positioning reference signal in related protocol specifications. For example, it has introduced the NR (New Radio) downlink time difference of arrival positioning method (DL-TDOA), the NR uplink time difference of arrival positioning method (UL-TDOA), and the NR multi-round trip time positioning method (Multi-RTT).

[0004] These methods all achieve positioning using time-related measurement values. These time-related measurement values are inevitably affected by signal propagation delay. From the perspective of the transmission of the positioning reference signal, there is a certain transmission delay (Tx Delay, that is, the transmission channel delay) between the time when the positioning reference signal is generated and the time when the positioning reference signal is transmitted by the transmitter (user equipment UE or base station) antenna. From the perspective of the reception of the positioning reference signal, there is also a reception time delay (Rx Delay) from the time when the positioning reference signal reaches the receiver (base station or UE) antenna to the time when the positioning reference signal is detected. Generally, the receiver can, through appropriate design, eliminate the influence of its own Rx Delay on the positioning measurement value as much as possible. However, since the receiver does not know the Tx Delay, it is difficult to remove the influence of the Tx Delay on the positioning measurement value, resulting in a large positioning error and the positioning accuracy not being able to meet the requirements.

[0005] Therefore, in order to improve the positioning accuracy, it is necessary to provide a method that can correct the transmission channel delay when positioning using time-related measurement values.

Summary of the Invention

Problems to be Solved by the Invention

[0006] Embodiments of the present disclosure provide a method, apparatus, and storage medium for correcting a transmission channel delay to solve the defect in the related art that it is difficult to remove the influence of the Tx Delay on the positioning measurement value, resulting in a large positioning error and the positioning accuracy not being able to meet the requirements.

Means for Solving the Problems

[0007] In a first aspect, embodiments of the present disclosure provide a method for correcting a transmission channel delay, which is applied to a Location Management Function (LMF), receiving transmission channel delay Tx Delay parameter information transmitted from a transmission node and transmitting positioning reference signal setting information to a receiving node, including correcting the positioning measurement value based on the Tx Delay parameter information; Here, the positioning measurement value is obtained by the receiving node measuring a positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0008] Optionally, according to a method for correcting a transmission channel delay according to an embodiment of the present disclosure, the transmitting node is a base station and / or a user equipment UE. Here, when the transmitting node is a base station, the Tx Delay parameter information is base station Tx Delay parameter information, the receiving node is a UE, and the positioning reference signal is a downlink positioning reference signal; when the transmitting node is a UE, the Tx Delay parameter information is UE Tx Delay parameter information, the receiving node is a base station, and the positioning reference signal is an uplink positioning reference signal; when the transmitting nodes are a base station and a UE respectively, the Tx Delay parameter information includes base station Tx Delay parameter information and UE Tx Delay parameter information, the receiving nodes are a UE and a base station respectively, and the positioning reference signals are a downlink positioning reference signal and an uplink positioning reference signal respectively.

[0009] Optionally, according to a method for correcting a transmission channel delay according to an embodiment of the present disclosure, when the transmitting node is a base station, the above-mentioned receiving the transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting the positioning reference signal setting information to the receiving node is transmitting a TRP information request message for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information to the base station; receiving the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information; Send a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a first positioning measurement value. Correcting the positioning measurement value based on the Tx Delay parameter information described above is Including correcting the first positioning measurement value based on the base station Tx Delay parameter information.

[0010] Optionally, according to a method for correcting transmission channel delay according to an embodiment of the present disclosure, before transmitting a TRP information request message to the base station as described above, Send a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. Receive a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE. Further include receiving a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0011] Optionally, according to a method for correcting transmission channel delay according to an embodiment of the present disclosure, when the transmission node is a user terminal UE as described above, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmission node and transmitting the positioning reference signal setting information to the receiving node is Receiving the UE Tx Delay parameter information obtained by the UE. Sending a TRP information request message to the base station, where the TRP information request message is for requesting the base station to provide its own TRP information and uplink positioning reference signal setting information. Receiving the TRP information and the uplink positioning reference signal setting information; Sending a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a second positioning measurement value; Correcting the positioning measurement value based on the Tx Delay parameter information described above includes: Correcting the second positioning measurement value based on the UE Tx Delay parameter information.

[0012] Optionally, according to the transmission channel delay correction method according to an embodiment of the present disclosure, before receiving the UE Tx Delay parameter information acquired by the UE described above, Sending a positioning capability request message to the UE, where the positioning capability request message is used to request the UE to notify the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information; Receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is used to notify the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information; Further including sending a UE Tx Delay request message to the UE, where the UE Tx Delay request message is used to request the UE to provide UE Tx Delay parameter information.

[0013] Optionally, according to the transmission channel delay correction method according to an embodiment of the present disclosure, when the transmission nodes are a base station and a UE respectively, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmission node and sending the positioning reference signal setting information to the receiving node includes: Receiving the UE Tx Delay parameter information acquired by the UE; Transmitting a TRP information request message to a base station, wherein the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information; Receiving the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information; Sending a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures a downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value; Sending a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures an uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a fourth positioning measurement value, Correcting the positioning measurement value based on the Tx Delay parameter information as described above includes: Correcting the third positioning measurement value based on the base station Tx Delay parameter information; Correcting the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0014] Optionally, according to a transmission channel delay correction method according to an embodiment of the present disclosure, Transmitting a positioning capability request message to the UE, wherein the positioning capability request message is for requesting the UE to notify the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information; Receiving a positioning capability providing message transmitted from the UE, wherein the positioning capability providing message is for notifying the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information; To send a UE Tx Delay request message to the UE, wherein the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information. Further comprising receiving a positioning assistance data request message transmitted from the UE, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0015] Optionally, according to a method for correcting transmission channel delay according to an embodiment of the present disclosure, the base station includes a serving base station and at least one neighboring base station, and the positioning reference signal setting information is determined by the serving base station.

[0016] Optionally, the transmission channel delay Tx Delay parameter information includes absolute group delay information of the transmission channel, relative group delay information of the transmission channel, and a quality indicator of the transmission channel group delay information, wherein The absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency. The relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency. The quality indicator of the transmission channel group delay information includes an error parameter.

[0017] In a second aspect, an embodiment of the present disclosure further provides a method for correcting transmission channel delay, which is applied to a user terminal UE, Receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE, Transmitting the UE Tx Delay parameter information to a location management function LMF, and the LMF corrects positioning measurement values based on the UE Tx Delay parameter information. Here, the positioning measurement value is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information, and / or the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information.

[0018] Optionally, according to the method for correcting the transmission channel delay according to one embodiment of the present disclosure, transmitting the UE Tx Delay parameter information to the position management function LMF as described above is Receiving the positioning capability request message transmitted from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information Transmitting a positioning capability providing message to the LMF, where the positioning capability providing message is for notifying the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information Receiving the UE Tx Delay request message transmitted from the LMF, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information Including transmitting a UE Tx Delay providing message including the UE Tx Delay parameter information to the LMF.

[0019] Optionally, according to the method for correcting the transmission channel delay according to one embodiment of the present disclosure, after transmitting the UE Tx Delay providing message to the LMF as described above, The UE receives the uplink positioning reference signal setting information transmitted by the base station through RRC signaling, transmits an uplink positioning reference signal to the base station, the base station measures the uplink positioning reference signal, and transmits the obtained positioning measurement value to the LMF, and the LMF further corrects the positioning measurement value based on the UE Tx Delay parameter information.

[0020] Optionally, according to the transmission channel delay correction method according to one embodiment of the present disclosure, after transmitting a UE Tx Delay providing message to the LMF, transmitting a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data; receiving a positioning assistance data providing message including downlink positioning reference signal setting information transmitted from the LMF; measuring a downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value, transmitting the third positioning measurement value to the LMF, and the LMF corrects the third positioning measurement value based on the base station Tx Delay parameter information; The UE receives the uplink positioning reference signal setting information transmitted by the base station through RRC signaling, transmits an uplink positioning reference signal to the base station, the base station measures the uplink positioning reference signal to obtain a fourth positioning measurement value, transmits the fourth positioning measurement value to the LMF, and the LMF corrects the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0021] In a third aspect, the embodiment of the present disclosure further provides a method for correcting a transmission channel delay, which is applied to a base station, obtaining base station Tx Delay parameter information of a transmission channel delay corresponding to the base station; transmitting the base station Tx Delay parameter information to a Location Management Function (LMF), and the LMF corrects a positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0022] Optionally, according to the method for correcting the transmission channel delay according to one embodiment of the present disclosure, transmitting the base station Tx Delay parameter information to the location management function LMF as described above includes receiving the TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF, where the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, and the TRP information providing message includes the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, or the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information, and the TRP information providing message includes the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information.

[0023] Optionally, according to the method for correcting the transmission channel delay according to one embodiment of the present disclosure, the base station includes a serving base station and at least one neighboring base station, and the uplink positioning reference signal setting information and / or the downlink positioning reference signal setting information are determined by the serving base station.

[0024] In a fourth aspect, an embodiment of the present disclosure further provides a method for correcting a transmission channel delay, which is applied to a user equipment UE, receiving the transmission channel delay UE Tx Delay parameter information corresponding to the UE, and Receiving base station Tx Delay parameter information transmitted from a base station or a Location Management Function (LMF); including correcting positioning measurement values based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information; wherein the positioning measurement values are obtained by a receiving node measuring positioning reference signals transmitted from a transmitting node based on positioning reference signal setting information.

[0025] Optionally, according to a method for correcting transmission channel delay according to an embodiment of the present disclosure, receiving the base station Tx Delay parameter information transmitted from the base station or the Location Management Function (LMF) as described above includes: receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of an adjacent base station transferred by the serving base station, or receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of an adjacent base station transferred by the LMF, or receiving the base station Tx Delay parameter information of the serving base station and the adjacent base station transferred by the LMF.

[0026] Optionally, according to a method for correcting transmission channel delay according to an embodiment of the present disclosure, when the transmitting node is a base station, before correcting the positioning measurement values based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information as described above, receiving a positioning capability request message transmitted from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; transmitting a positioning capability providing message to the LMF, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE. Sending a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data; Receiving a positioning assistance data providing message sent from the LMF, where the positioning assistance data providing message is for providing positioning assistance data including downlink positioning reference signal setting information to the UE; Receiving a positioning information request message sent from the LMF, where the positioning information request message is for requesting the UE to measure a downlink positioning reference signal sent from a base station; Further including measuring a downlink positioning reference signal sent from a base station using the downlink positioning reference signal setting information to obtain a fifth positioning measurement value; Specifically, correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information as described above is Correcting the fifth positioning measurement value based on the base station Tx Delay parameter information.

[0027] Optionally, according to the method for correcting the transmission channel delay according to one embodiment of the present disclosure, when the transmission node is a base station and a UE, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, Receiving a positioning capability request message sent from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; Sending a positioning capability providing message to the LMF, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE; Sending a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data; Receiving a positioning assistance data providing message transmitted from the LMF, where the positioning assistance data providing message is for providing positioning assistance data including downlink positioning reference signal setting information to the UE. Receiving a positioning information request message transmitted from the LMF, where the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station. Measuring a downlink positioning reference signal transmitted from a base station using the positioning assistance data to obtain a sixth positioning measurement value. Receiving uplink positioning reference signal setting information transmitted by the serving base station through RRC signaling. Based on RRC signaling, transmitting an uplink positioning reference signal to all base stations participating in positioning, and all base stations participating in the positioning measure the uplink positioning reference signal based on the uplink positioning reference signal setting information transmitted from the LMF to obtain a seventh positioning measurement value, and the LMF transmits the seventh positioning measurement value to the UE. Here, all base stations participating in positioning include the serving base station and at least one neighboring base station. Correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above specifically includes: Correcting the sixth positioning measurement value based on the base station Tx Delay parameter information, and Correcting the seventh positioning measurement value based on the UE Tx Delay parameter information.

[0028] Optionally, according to the transmission channel delay correction method according to one embodiment of the present disclosure, the UE Tx Delay parameter information or the base station Tx Delay parameter information includes the absolute group delay information of the transmission channel, the relative group delay information of the transmission channel, and the quality indicator of the transmission channel group delay information. Here, The absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency. The relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency. The quality indicator of the transmission channel group delay information includes an error parameter.

[0029] In a fifth aspect, an embodiment of the present disclosure further provides a method for correcting transmission channel delay, which is applied to a Location Management Function (LMF). Obtaining base station Tx Delay parameter information and positioning reference signal setting information. Transmitting the positioning reference signal setting information to a receiving node. Transmitting the base station Tx Delay parameter information to a user equipment (UE), and the UE corrects positioning measurement values based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information. Here, when the transmitting node is a base station, the receiving node is a UE; when the transmitting nodes are a UE and a base station respectively, the receiving nodes correspond to the base station and the UE respectively.

[0030] Optionally, according to the method for correcting transmission channel delay according to an embodiment of the present disclosure, obtaining the base station Tx Delay parameter information and the positioning reference signal setting information as described above includes: Transmitting a TRP information request message to a base station and receiving a TRP information providing message transmitted from the base station. Here, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, uplink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. Alternatively, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information.

[0031] As an option, according to the method for correcting transmission channel delay according to one embodiment of the present disclosure, transmitting a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE; receiving a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data; transmitting a positioning assistance data providing message to the UE, where the positioning assistance data providing message is for providing the UE with positioning assistance data including the downlink positioning reference signal setting information; To send a positioning information request message to a UE, where the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station, and the UE further measures the downlink positioning reference signal transmitted from the base station using the positioning assistance data.

[0032] Optionally, according to a method for correcting transmission channel delay according to an embodiment of the present disclosure, after sending the positioning information request message to the UE as described above, To send a measurement information request message to all base stations participating in positioning, where the measurement information request message includes the uplink positioning reference signal setting information for requesting all the base stations participating in the positioning to measure the uplink positioning reference signal transmitted from the UE and report the measured positioning measurement values. Further including receiving the positioning measurement values transmitted from all base stations participating in positioning and sending the positioning measurement values transmitted from all base stations participating in the positioning to the UE.

[0033] In a sixth aspect, an embodiment of the present disclosure further provides a method for correcting transmission channel delay, which is applied to a base station, Obtaining the transmission channel delay base station Tx Delay parameter information corresponding to the base station, Providing positioning reference signal setting information to a user equipment UE, sending the base station Tx Delay parameter information to the UE, and the UE corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information and / or by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0034] Optionally, according to the method for correcting transmission channel delay according to one embodiment of the present disclosure, providing the positioning reference signal setting information to the user equipment UE as described above is generating downlink positioning reference signal setting information, transferring it to the UE by the Location Management Function (LMF), and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, or generating uplink positioning reference signal setting information and downlink positioning reference signal setting information, transmitting them to the Location Management Function (LMF), and the LMF transmits the downlink positioning reference signal setting information to the UE and transmits the uplink positioning reference signal setting information to all base stations participating in positioning, including Here, the base station sets the uplink positioning reference signal setting information for the UE by RRC signaling, and the UE transmits the uplink positioning reference signal to the base station by RRC signaling based on the uplink positioning reference signal setting information.

[0035] Optionally, according to the method for correcting transmission channel delay according to one embodiment of the present disclosure, the base station includes a serving base station and at least one neighboring base station, and transmitting the base station Tx Delay parameter information to the UE as described above is the serving base station directly transmits its own base station Tx Delay parameter information to the UE, or transfers its own base station Tx Delay parameter information by the LMF, and the neighboring base station transfers its own base station Tx Delay parameter information by the serving base station or the LMF.

[0036] Optionally, according to the method for correcting transmission channel delay according to one embodiment of the present disclosure, providing the positioning reference signal setting information to the user equipment UE and transmitting the base station Tx Delay parameter information to the UE as described above is receiving a TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF, where For the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and its own base station Tx Delay information. For an adjacent base station, the TRP information request message requests the adjacent base station to provide its own TRP information and base station Tx Delay information, or, For the serving base station, the TRP information request message simultaneously requests the serving base station to provide its own TRP information, downlink positioning reference signal setting information, and its own base station Tx Delay information. For an adjacent base station, the TRP information request message requests the adjacent base station to provide its own TRP information and base station Tx Delay information.

[0037] In a seventh aspect, an embodiment of the present disclosure further provides a Location Management Function (LMF), which includes a memory, a transceiver, and a processor. The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor. The processor reads the computer program in the memory to perform the following operations, namely, receiving transmission channel delay (Tx Delay) parameter information transmitted from a transmitting node and transmitting positioning reference signal setting information to a receiving node; correcting positioning measurement values based on the Tx Delay parameter information. Here, the positioning measurement values are obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information. Here, the positioning measurement values are obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0038] Optionally, according to a Location Management Function (LMF) according to an embodiment of the present disclosure, the transmitting node is a base station and / or a User Equipment (UE). Here, When the transmitting node is a base station, the Tx Delay parameter information is base station Tx Delay parameter information, the receiving node is a UE, and the positioning reference signal is a downlink positioning reference signal. When the transmitting node is a UE, the Tx Delay parameter information is UE Tx Delay parameter information, the receiving node is a base station, and the positioning reference signal is an uplink positioning reference signal. When the transmitting nodes are a base station and a UE respectively, the Tx Delay parameter information includes base station Tx Delay parameter information and UE Tx Delay parameter information, the receiving nodes are a UE and a base station respectively, and the positioning reference signals are a downlink positioning reference signal and an uplink positioning reference signal respectively.

[0039] Optionally, according to the location management function LMF according to one embodiment of the present disclosure, when the transmitting node is a base station, receiving the transmitted channel delay Tx Delay parameter information transmitted from the transmitting node as described above and transmitting positioning reference signal setting information to the receiving node is transmitting a TRP information request message for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information to the base station; receiving the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information; transmitting a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a first positioning measurement value; correcting the positioning measurement value based on the Tx Delay parameter information as described above is including correcting the first positioning measurement value based on the base station Tx Delay parameter information.

[0040] Optionally, according to the location management function LMF according to one embodiment of the present disclosure, before transmitting a TRP information request message to a base station, transmitting a positioning capability request message to a UE, wherein the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; receiving a positioning capability provision message transmitted from the UE, wherein the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE; further including receiving a positioning assistance data request message transmitted from the UE, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0041] Optionally, according to the location management function LMF according to one embodiment of the present disclosure, when the transmitting node is a user equipment UE, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmitting node as described above and transmitting positioning reference signal setting information to the receiving node is receiving the UE Tx Delay parameter information acquired by the UE; transmitting a TRP information request message to a base station, wherein the TRP information request message is for requesting the base station to provide its own TRP information and uplink positioning reference signal setting information; receiving the TRP information and the uplink positioning reference signal setting information; transmitting a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a second positioning measurement value; correcting the positioning measurement value based on the Tx Delay parameter information as described above is including correcting the second positioning measurement value based on the UE Tx Delay parameter information.

[0042] Optionally, according to the location management function LMF according to one embodiment of the present disclosure, before receiving the UE Tx Delay parameter information acquired by the UE as described above, transmitting a positioning capability request message to the UE, wherein the positioning capability request message requests the UE to notify the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information, receiving a positioning capability provision message transmitted from the UE, wherein the positioning capability provision message is for notifying the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information, further includes transmitting a UE Tx Delay request message to the UE, wherein the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information.

[0043] Optionally, according to the location management function LMF according to one embodiment of the present disclosure, when the transmitting nodes are a base station and a UE respectively, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmitting node as described above and transmitting positioning reference signal setting information to the receiving node includes: receiving the UE Tx Delay parameter information acquired by the UE, transmitting a TRP information request message to the base station, wherein the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information, receiving the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information, Transmit a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value; Transmit a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a fourth positioning measurement value, The correcting the positioning measurement value based on the Tx Delay parameter information described above correcting the third positioning measurement value based on the base station Tx Delay parameter information; including correcting the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0044] Optionally, according to a location management function LMF according to an embodiment of the present disclosure, transmitting a positioning capability request message to the UE, the positioning capability request message being for requesting the UE to notify the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information; receiving a positioning capability providing message transmitted from the UE, the positioning capability providing message being for notifying the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information; transmitting a UE Tx Delay request message to the UE, the UE Tx Delay request message being for requesting the UE to provide UE Tx Delay parameter information; further including receiving a positioning assistance data request message transmitted from the UE, the positioning assistance data request message being for requesting the LMF to provide positioning assistance data to the UE.

[0045] As an option, according to the location management function LMF according to one embodiment of the present disclosure, the base station includes a serving base station and at least one adjacent base station, and the positioning reference signal setting information is determined by the serving base station.

[0046] As an option, according to the location management function LMF according to one embodiment of the present disclosure, the transmission channel delay Tx Delay parameter information includes absolute group delay information of the transmission channel, relative group delay information of the transmission channel, and a quality indicator of the transmission channel group delay information, where the absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency, the relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency, the quality indicator of the transmission channel group delay information includes an error parameter.

[0047] In an eighth aspect, an embodiment of the present disclosure further provides a user equipment UE, which includes a memory, a transceiver, and a processor, the memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor, the processor reads the computer program in the memory and performs the following operations, that is, receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE, transmitting the UE Tx Delay parameter information to a location management function LMF, and the LMF corrects a positioning measurement value based on the UE Tx Delay parameter information. Here, the positioning measurement value is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information, and / or is obtained by the UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information.

[0048] Optionally, according to a user terminal UE according to an embodiment of the present disclosure, the above-mentioned transmitting the UE Tx Delay parameter information to the positioning management function LMF is receiving a positioning capability request message transmitted from the LMF, where the positioning capability request message is for the LMF to request the UE to notify the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information, transmitting a positioning capability providing message to the LMF, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information, receiving a UE Tx Delay request message transmitted from the LMF, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information, including transmitting a UE Tx Delay providing message including the UE Tx Delay parameter information to the LMF.

[0049] Optionally, according to a user terminal UE according to an embodiment of the present disclosure, after the above-mentioned transmitting a UE Tx Delay providing message to the LMF, receiving uplink positioning reference signal setting information transmitted by the base station through RRC signaling, transmitting an uplink positioning reference signal to the base station, the base station measuring the uplink positioning reference signal, and transmitting the obtained positioning measurement value to the LMF, and the LMF correcting the positioning measurement value based on the UE Tx Delay parameter information.

[0050] As an option, according to the user equipment UE according to one embodiment of the present disclosure, after the above-described UE Tx Delay providing message is transmitted to the LMF, transmitting the UE Tx Delay parameter information to the location management function LMF; transmitting a positioning assistance data request message for requesting the LMF to provide positioning assistance data to the LMF; receiving a positioning assistance data providing message including downlink positioning reference signal setting information transmitted from the LMF; measuring a downlink positioning reference signal transmitted from a base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value, and transmitting the third positioning measurement value to the LMF, and the LMF corrects the third positioning measurement value based on the base station Tx Delay parameter information; receiving uplink positioning reference signal setting information transmitted by the base station through RRC signaling, transmitting an uplink positioning reference signal to the base station, the base station measures the uplink positioning reference signal to obtain a fourth positioning measurement value, and transmitting the fourth positioning measurement value to the LMF, and the LMF corrects the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0051] In a ninth aspect, an embodiment of the present disclosure further provides a base station, which includes a memory, a transceiver, and a processor. The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor. The processor reads the computer program in the memory and performs the following operations, that is, obtaining base station Tx Delay parameter information of a transmission channel delay corresponding to the base station; It is for transmitting the base station Tx Delay parameter information to the Location Management Function LMF, and the LMF corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or the base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0052] Optionally, according to a base station according to an embodiment of the present disclosure, transmitting the base station Tx Delay parameter information to the Location Management Function LMF described above includes receiving a TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF. Here, the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information. The TRP information providing message includes the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, or the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. The TRP information providing message includes the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information.

[0053] Optionally, according to a base station according to an embodiment of the present disclosure, the base station includes a serving base station and at least one adjacent base station, and the uplink positioning reference signal setting information and / or the downlink positioning reference signal setting information are determined by the serving base station.

[0054] In a tenth aspect, an embodiment of the present disclosure further provides a user equipment UE, which includes a memory, a transceiver, and a processor, The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor, The processor reads the computer program in the memory to perform the following operations, that is, Receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE, Receiving base station Tx Delay parameter information transmitted from a base station or a location management function LMF, Based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, correcting a positioning measurement value, Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on positioning reference signal setting information.

[0055] Optionally, according to a user equipment UE according to an embodiment of the present disclosure, receiving the base station Tx Delay parameter information transmitted from the base station or the location management function LMF as described above is Receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of an adjacent base station transferred by the serving base station, or Receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of an adjacent base station transferred by the LMF, or Receiving the base station Tx Delay parameter information of the serving base station and the adjacent base station transferred by the LMF.

[0056] Optionally, according to a user equipment UE according to one embodiment of the present disclosure, when the transmission node is a base station, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above, receiving a positioning capability request message transmitted from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; transmitting a positioning capability providing message to the LMF, wherein the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE; transmitting a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data; receiving a positioning assistance data providing message transmitted from the LMF, wherein the positioning assistance data providing message is for providing positioning assistance data including downlink positioning reference signal setting information to the UE; receiving a positioning information request message transmitted from the LMF, wherein the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station; further including measuring a downlink positioning reference signal transmitted from a base station using the downlink positioning reference signal setting information to obtain a fifth positioning measurement value; correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above specifically includes: correcting the fifth positioning measurement value based on the base station Tx Delay parameter information.

[0057] Optionally, according to a user equipment UE according to one embodiment of the present disclosure, when the transmission nodes are a base station and a UE, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, Receiving the positioning capability request message sent from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. Sending a positioning capability provision message to the LMF, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE. Sending a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data. Receiving the positioning assistance data provision message sent from the LMF, where the positioning assistance data provision message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information. Receiving the positioning information request message sent from the LMF, where the positioning information request message is for requesting the UE to measure the downlink positioning reference signal sent from the base station. Measuring the downlink positioning reference signal sent from the base station using the positioning assistance data to obtain a sixth positioning measurement value. Receiving the uplink positioning reference signal setting information sent by the serving base station through RRC signaling. Based on the RRC signaling, transmitting an uplink positioning reference signal to all base stations participating in the positioning, and all the base stations participating in the positioning measure the uplink positioning reference signal based on the uplink positioning reference signal setting information sent from the LMF to obtain a seventh positioning measurement value, and the LMF transmits the seventh positioning measurement value to the UE. Here, all the base stations participating in the positioning include the serving base station and at least one neighboring base station. Correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above specifically includes: Correcting the sixth positioning measurement value based on the base station Tx Delay parameter information, and To correct the seventh positioning measurement value based on the UE Tx Delay parameter information.

[0058] Optionally, according to a user equipment UE according to an embodiment of the present disclosure, the UE Tx Delay parameter information or the base station Tx Delay parameter information includes absolute group delay information of a transmission channel, relative group delay information of the transmission channel, and a quality indicator of the transmission channel group delay information, where the absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency, the relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency, the quality indicator of the transmission channel group delay information includes an error parameter.

[0059] In an eleventh aspect, an embodiment of the present disclosure further provides a location management function LMF, and the location management function LMF includes a memory, a transceiver, and a processor, the memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor, the processor reads the computer program in the memory and performs the following operations, that is acquiring base station Tx Delay parameter information and positioning reference signal setting information, transmitting the positioning reference signal setting information to a receiving node, transmitting the base station Tx Delay parameter information to a user equipment UE, and the UE corrects a positioning measurement value based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information, where the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information. Here, when the transmitting node is a base station, the receiving node is a UE. When the transmitting nodes are a UE and a base station respectively, the receiving nodes correspond to a base station and a UE respectively.

[0060] As an option, according to the location management function LMF according to one embodiment of the present disclosure, obtaining the above-described base station Tx Delay parameter information and positioning reference signal setting information includes transmitting a TRP information request message to a base station and receiving a TRP information providing message transmitted from the base station, wherein, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, the uplink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. Alternatively, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information.

[0061] As an option, according to the location management function LMF according to one embodiment of the present disclosure, transmitting a positioning capability request message to a UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE, receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE, Receiving a positioning assistance data request message transmitted from a UE, wherein the positioning assistance data request message is for requesting the provision of positioning assistance data from an LMF. Transmitting a positioning assistance data provision message to the UE, wherein the positioning assistance data provision message is for providing positioning assistance data including the downlink positioning reference signal setting information to the UE. Transmitting a positioning information request message to the UE, wherein the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station, and the UE further measures the downlink positioning reference signal transmitted from the base station using the positioning assistance data.

[0062] Optionally, according to a location management function LMF according to one embodiment of the present disclosure, after transmitting the positioning information request message to the UE as described above, Transmitting a measurement information request message to all base stations participating in positioning, wherein the measurement information request message includes the uplink positioning reference signal setting information for requesting all base stations participating in the positioning to measure an uplink positioning reference signal transmitted from the UE and report the measured positioning measurement values. Further including receiving positioning measurement values transmitted from all base stations participating in positioning and transmitting the positioning measurement values transmitted from all base stations participating in the positioning to the UE.

[0063] In a twelfth aspect, an embodiment of the present disclosure further provides a base station, which includes a memory, a transceiver, and a processor. The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor. The processor reads the computer program in the memory and performs the following operations, that is, Obtaining transmission channel delay base station Tx Delay parameter information corresponding to the base station. To provide positioning reference signal setting information to the user equipment UE, and to transmit the base station Tx Delay parameter information to the UE, so that the UE corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0064] Optionally, according to a base station according to an embodiment of the present disclosure, providing the positioning reference signal setting information to the user equipment UE as described above generating downlink positioning reference signal setting information and transferring it to the UE by the location management function LMF, and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, or generating uplink positioning reference signal setting information and downlink positioning reference signal setting information, transmitting them to the location management function LMF, and the LMF transmits the downlink positioning reference signal setting information to the UE and transmits the uplink positioning reference signal setting information to all base stations participating in the positioning. Here, the base station sets the uplink positioning reference signal setting information for the UE by RRC signaling, and the UE transmits the uplink positioning reference signal to the base station by RRC signaling based on the uplink positioning reference signal setting information.

[0065] Optionally, according to a base station according to an embodiment of the present disclosure, the base station includes a serving base station and at least one neighboring base station, and transmitting the base station Tx Delay parameter information to the UE as described above includes the serving base station directly transmitting its own base station Tx Delay parameter information to the UE, or transferring its own base station Tx Delay parameter information by the LMF, and the neighboring base station transferring its own base station Tx Delay parameter information by the serving base station or the LMF.

[0066] As an option, according to a base station according to one embodiment of the present disclosure, providing the positioning reference signal setting information to the user equipment UE and transmitting the base station Tx Delay parameter information to the UE as described above is receiving a TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF, wherein, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and its own base station Tx Delay information, and for an adjacent base station, the TRP information request message requests the adjacent base station to provide its own TRP information and base station Tx Delay information, or for the serving base station, the TRP information request message simultaneously requests the serving base station to provide its own TRP information, downlink positioning reference signal setting information, and its own base station Tx Delay information, and for an adjacent base station, the TRP information request message requests the adjacent base station to provide its own TRP information and base station Tx Delay information.

[0067] In a 13th aspect, an embodiment of the present disclosure further provides a location management function LMF, and the location management function LMF is a first transmission unit that receives transmission channel delay Tx Delay parameter information transmitted from a transmission node and transmits positioning reference signal setting information to a receiving node, and a first correction unit for correcting a positioning measurement value based on the Tx Delay parameter information, wherein the positioning measurement value is obtained by the receiving node measuring a positioning reference signal transmitted from the transmission node based on the positioning reference signal setting information.

[0068] In a 14th aspect, an embodiment of the present disclosure further provides a user equipment UE, and the user equipment UE is A first acquisition unit for receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE; A first transmission unit that transmits the UE Tx Delay parameter information to a location management function LMF so that the LMF corrects a positioning measurement value based on the UE Tx Delay parameter information; Here, the positioning measurement value is obtained by a base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal setting information, and / or is obtained by the UE measuring a downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal setting information.

[0069] In a 15th aspect, an embodiment of the present disclosure further provides a base station, and the base station A second acquisition unit for acquiring transmission channel delay base station Tx Delay parameter information corresponding to the base station; A second transmission unit that transmits the base station Tx Delay parameter information to a location management function LMF so that the LMF corrects a positioning measurement value based on the base station Tx Delay parameter information; Here, the positioning measurement value is obtained by a user equipment UE measuring a downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal setting information, and / or is obtained by the base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal setting information.

[0070] In a 16th aspect, an embodiment of the present disclosure further provides a user equipment UE, and the user equipment UE A third acquisition unit for receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE; A receiving unit for receiving base station Tx Delay parameter information transmitted from a base station or a location management function LMF; including a second correction unit for correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information.

[0071] In a seventeenth aspect, an embodiment of the present disclosure further provides a Location Management Function (LMF), which includes a fourth acquisition unit for acquiring base station Tx Delay parameter information and positioning reference signal setting information, a third transmission unit for transmitting the positioning reference signal setting information to a receiving node, and a fourth transmission unit for transmitting the base station Tx Delay parameter information to a User Equipment (UE) so that the UE corrects a positioning measurement value based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information, wherein when the transmitting node is a base station, the receiving node is a UE, and when the transmitting nodes are a UE and a base station respectively, the receiving nodes correspond to the base station and the UE respectively.

[0072] In an eighteenth aspect, an embodiment of the present disclosure further provides a base station, which includes a fifth acquisition unit for acquiring transmission channel delay base station Tx Delay parameter information corresponding to the base station, and a second transmission unit for providing positioning reference signal setting information to a User Equipment (UE) and transmitting the base station Tx Delay parameter information to the UE so that the UE corrects a positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0073] In a 19th aspect, the embodiment of the present disclosure further provides a processor-readable storage medium, and the processor-readable storage medium stores a computer program for causing a processor to execute the correction method for the transmission channel delay described in the first aspect, or the correction method for the transmission channel delay described in the second aspect, or the correction method for the transmission channel delay described in the third aspect, or the correction method for the transmission channel delay described in the fourth aspect, or the correction method for the transmission channel delay described in the fifth aspect, or the correction method for the transmission channel delay described in the sixth aspect.

Advantages of the Invention

[0074] The correction method, apparatus, and storage medium for the transmission channel delay according to the embodiment of the present disclosure can remove the influence on the positioning measurement value related to the time of the transmission channel delay by using the transmission channel delay Tx Delay parameter information, and can effectively improve the positioning accuracy.

[0075] To more clearly explain the technical solutions in the embodiments of the present disclosure or the prior art, the drawings necessary for the description of the embodiments or the prior art will be briefly described below. Of course, the drawings described below are some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings on the premise of not requiring creative labor.

Brief Description of the Drawings

[0076]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying out the Invention

[0077] In the embodiments of the present disclosure, the term "and / or" is used to explain the relationship of related objects, indicating that three types of relationships may exist. For example, A and / or B indicates three cases: when A exists alone, when A and B exist simultaneously, and when B exists alone. The character " / " usually indicates that the related objects before and after have an "or" relationship.

[0078] The term "plural" in the embodiments of the present disclosure means two or more, and other measure words are similar to it.

[0079] Hereinafter, with reference to the drawings in the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described. Of course, the described embodiments are only some embodiments of the embodiments of the present disclosure, not all embodiments. All other embodiments obtained on the premise that those skilled in the art do not make creative labor based on the embodiments in the present disclosure are included in the protection scope of the present disclosure.

[0080] Before describing the embodiments of the present disclosure in detail, the abbreviations used in the embodiments of the present disclosure will be explained.

[0081] 4G: the 4rd Generation, the 4th generation mobile communication technology, 5G: the 5rd Generation, the 5th generation mobile communication technology, NR: New Radio, new radio, E-SMLC: Evolve-Serving Mobile Location Center (4G), extended service mobile location center (4G location management function), gNB: Next generation NodeB, 5G base station, LMF: location management function, 5G location management function, LPP: LTE Positioning Protocol, LTE positioning protocol, PRS: positioning reference signal, positioning reference signal, RAT: radio access technology, radio access technology, RSTD: reference signal time difference, reference signal time difference, RTT: round trip time, round trip time, SRS-Pos: sounding reference signal for positioning, sounding reference signal for positioning, TOA: time of Arrival, time of arrival, TDOA: time difference of Arrival, time difference of arrival, TRP: Transmission-Reception Point, transmission and reception node, UE: user Terminal, user terminal, UL RTOA: uplink relative time of arrival (5G), 5G uplink relative arrival time, UL-TDOA: uplink time difference of arrival (5G), 5G uplink time difference of arrival positioning method, UTDOA: uplink time difference of arrival (4G), 4G uplink time difference of arrival positioning method, DL-TDOA: downlink time difference of arrival (5G), 5G downlink time difference of arrival positioning method, OTDOA: observed time difference of arrival (4G), 4G downlink time difference of arrival positioning method. Multi-RTT: multiple cell-round trip time, NR multi-round trip time positioning method, The downlink arrival time difference positioning method is called OTDOA in 4G and DL-TDOA in 5G. The uplink arrival time difference positioning method is called UTDOA in 4G and UL-TDOA in 5G. In 4G, the location management function is called E-SMLC, and in 5G, the location management function is called LMF. For the sake of convenience of description, this disclosure uniformly uses 5G terms to represent related concepts, but it does not mean that the methods and devices according to the embodiments of this disclosure are only applicable to 5G.

[0082] In the embodiments of this disclosure, the base station can represent a base station, a cell, a gNB, or a TRP. For example, the base station Tx delay can represent the TRP Tx Delay and the base station Tx Delay.

[0083] According to the 3GPP related protocol specifications, the node responsible for positioning calculation may be the UE or the location management function (LMF). The former is called UE-based positioning, and the latter is often called UE-assisted positioning. In 5G, the latter is also called LMF-based positioning.

[0084] The information interacted between the base station, the user terminal UE, and the location management function LMF does not include information related to the radio transmission channel signal delay between the UE and the base station. Therefore, for the LMF-based positioning method, the LMF cannot perform the necessary correction or compensation for the signal delay of the transmission channels of the UE and the base station in the measurement values during positioning calculation. For UE-based positioning, the UE cannot perform the necessary correction or compensation for the signal delay of the transmission channel of the base station in the measurement values during positioning calculation. For example, a 4 nanosecond (ns) Tx Dela introduces a timing measurement error of 1.2 meters, and in this case, the final terminal positioning accuracy cannot meet the sub-meter order.

[0085] Embodiments of the present disclosure provide a method, an apparatus, and a storage medium for correcting a transmission channel delay to solve the influence of the transmission channel delay between a UE and a base station on positioning measurement values related to time, correct the transmission channel delay between the UE and the base station, and improve positioning accuracy. It is suitable for various positioning methods (such as DL-TDOA, UL-TDOA, Multi-RTT, etc.) that use time-related measurements (for example, DL RSTD, UL RTOA, UE Rx-Tx time difference, and gNB Rx-Tx time difference) for positioning.

[0086] Here, the method and the apparatus are based on the same application concept, and since the principles of solving problems are similar between the method and the apparatus, their implementations can refer to each other, and the overlapping points will not be described anymore.

[0087] FIG. 1 is one of the flowcharts of the method for correcting the transmission channel delay according to the embodiments of the present disclosure, which is applied to a Location Management Function (LMF), and includes the following steps 100 and 101.

[0088] Step 100: Receive the transmission channel delay Tx Delay parameter information transmitted from the transmission node, and transmit the positioning reference signal setting information to the receiving node.

[0089] Specifically, in the embodiments of the present disclosure, for the LMF-based positioning method, the execution entity is the Location Management Function (LMF), that is, the Location Management Function (LMF) performs positioning calculations as a computing node.

[0090] In some alternative embodiments, the Location Management Function (LMF) can perform positioning calculations using three positioning methods: downlink arrival time difference positioning method, uplink arrival time difference positioning method, and multi-round trip time positioning method.

[0091] The Location Management Function (LMF) receives the transmission channel delay Tx Delay parameter information transmitted from the transmission node, and transmits the positioning reference signal setting information to the receiving node.

[0092] Here, the transmitting node is a node that transmits a positioning reference signal, which may be a base station and / or a user equipment UE, and the receiving node is a node that receives a positioning reference signal, and correspondingly, it may be a user equipment UE and / or a base station.

[0093] To correct the transmission channel delay, the present disclosure proposes to establish one parameter information regarding the transmission channel delay of the positioning reference signal transmission end (UE and base station), that is, the Tx Delay parameter information, in the 3GPP LPP and NRPPa protocols.

[0094] The Tx Delay parameter information is derived from the transmitting node and obtained at the transmitting node. For example, the UE calculates and obtains its own Tx Delay parameter information by transmitting a reference signal by itself and then receiving it by itself.

[0095] The positioning reference signal setting information is the setting information of the positioning reference signal. Here, the positioning reference signal is a reference signal used for positioning or assisted positioning. In some alternative embodiments, the positioning reference signal includes an uplink sounding reference signal for positioning UL SRS-Pos and / or a downlink positioning reference signal DL PRS.

[0096] Note that the positioning reference signal setting information is derived from the base station and determined by the base station and transmitted to the location management function LMF.

[0097] In some embodiments, the transmitting node is a base station and / or a user equipment UE, where when the transmitting node is a base station, that is, when the location management function LMF adopts the downlink arrival time difference positioning method (for example, DL-TDOA), correspondingly, the Tx Delay parameter information is the base station Tx Delay parameter information, the receiving node is a UE, the positioning reference signal is a downlink positioning reference signal, and the positioning reference signal setting information is downlink positioning reference signal setting information. When the transmitting node is a UE, that is, when the Location Management Function (LMF) adopts the uplink arrival time difference positioning method (e.g., UL-TDOA), correspondingly, the Tx Delay parameter information is UE Tx Delay parameter information, the receiving node is a base station, and the positioning reference signal is an uplink positioning reference signal. When the transmitting nodes are a base station and a UE respectively, that is, when the Location Management Function (LMF) adopts the multi-round trip time positioning method (e.g., Multi-RTT), correspondingly, the Tx Delay parameter information includes base station Tx Delay parameter information and UE Tx Delay parameter information, the receiving nodes are a UE and a base station respectively, and the positioning reference signals are a downlink positioning reference signal and an uplink positioning reference signal respectively.

[0098] Step 101: Correct the positioning measurement value based on the Tx Delay parameter information. Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0099] Specifically, the Location Management Function (LMF) receives the positioning measurement value reported by the receiving node. Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information transmitted from the Location Management Function.

[0100] In some alternative embodiments, the positioning measurement value includes, but is not limited to, at least one of the downlink reference signal time difference (DL RSTD), uplink relative arrival time (UL RTOA), base station Rx-Tx time difference (gNB Rx-Tx Time Difference), and UE Rx-Tx time difference (UE Rx-Tx Time Difference).

[0101] Then, the Location Management Function (LMF) corrects the positioning measurement value based on the transmission channel delay (Tx Delay) parameter information.

[0102] Here, correcting the positioning measurement value based on the Tx Delay parameter information means that correcting the positioning measurement value based on the Tx Delay parameter information includes using the following formula.

[0103] Positioning measurement value after correction = Positioning measurement value before correction - Tx Delay parameter information.

[0104] In some alternative embodiments, the following corrections are performed respectively for different types of positioning methods.

[0105] 1) For the downlink arrival time difference positioning method (DL-TDOA), DL RSTD = DL RSTD - base station Tx Delay, 2) For the uplink arrival time difference positioning method (UL-TDOA), UL RTOA = UL RTOA - UE Tx Delay, 3) For the multi-round trip time positioning method (Multi-RTT), gNB Rx-Tx Time Difference = gNB Rx-Tx Time Difference - UE Tx Delay, UE Rx-Tx Time Difference = UE Rx-Tx Time Difference - base station Tx Delay.

[0106] The location management function LMF can perform positioning calculations based on the corrected positioning measurement value and information such as the base station antenna position reported by the base station, thereby realizing accurate positioning.

[0107] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to various LMF-based positioning methods, can remove the influence of the transmission channel delay on the positioning measurement value related to time, and can effectively improve the positioning accuracy.

[0108] Based on the content of the above embodiments, the transmission channel delay Tx Delay parameter information includes the absolute group delay information of the transmission channel, the relative group delay information of the transmission channel, and the quality indicator of the transmission channel group delay information. Here, The absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, representing the absolute delay of the carrier frequency band or the carrier frequency, The relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency, The quality indicator of the transmission channel group delay information includes error parameters.

[0109] Specifically, in order to correct the transmission channel delay, the present disclosure proposes to establish one parameter information related to the transmission channel delay of the positioning reference signal transmission ends (UE and base station), that is, Tx Delay parameter information, in the 3GPP LPP and NRPPa protocols.

[0110] The Tx Delay parameter information includes the following three parts.

[0111] 1), The absolute group delay information of the transmission channel is defined as a parameter (per carrier) related to each carrier frequency band (per band) or a carrier frequency having a certain carrier bandwidth, representing the absolute delay of the carrier frequency band or the carrier frequency, with the unit of ns. When a wireless signal passes through a transmission medium, a delay occurs. The magnitude of the delay is related to the transmission medium. Ideally, the delays of each frequency in the signal bandwidth range are equal. In reality, for example, in the case of electrical components such as cables, the signal transmission delays in a certain band or a certain bandwidth range are approximately equal, and this delay is called the absolute group delay. Generally, the absolute group delay is the main part of the group delay of the transmission and reception transmission channels of the UE and the base station. Therefore, it is necessary to correct or compensate the absolute delay first in positioning.

[0112] In an embodiment of the present disclosure, the absolute group delay is defined as a parameter per band or per carrier for a carrier frequency having a constant carrier bandwidth, and represents the absolute delay of the frequency band or the carrier frequency.

[0113] 2) The relative group delay information of the transmission channel is defined as a set of parameters related to sub-carrier frequencies in the bandwidth covered by the band or carrier frequency, and the unit is ns. The wireless transmission and reception channels between the UE and the base station are restricted by the band-pass characteristics of filters, amplifiers, and mixers. The delay of some electrical elements (e.g., band-pass filters) in the radio frequency circuit changes significantly with the change of frequency in the carrier bandwidth range. Especially in the 5G NR system, the bandwidth covered by one carrier band or carrier frequency is large. The signal components of each sub-carrier in the bandwidth are subject to different group delays, and such delays are called relative group delays. The larger the bandwidth, the larger the relative group delay between each sub-carrier in the bandwidth. The relative difference in the delays can reach several nanoseconds (ns) or more. Since 5G supports large bandwidths and high-precision positioning is required, the impact of relative group delay on positioning measurements in 5G positioning cannot be ignored.

[0114] Regarding the relative group delay of the transmission channel between the UE and the base station, the embodiment of the present disclosure defines it as a set of parameters related to sub-carrier frequencies in the bandwidth covered by the band or carrier frequency. For example, the UE and the base station can provide the relative group delay information of each sub-carrier in the bandwidth, or divide the bandwidth into several parts, and use a set of relative group delay parameters to represent the relative group delay of each bandwidth part.

[0115] The quality indicator of the transmission channel group delay information includes an error parameter, and the error parameter includes, but is not limited to, the variance, average value, or standard deviation of the group delay error.

[0116] The quality (such as accuracy and reliability) of the group delay information provided by the UE and the base station may vary significantly. For example, the group delay information provided by a certain UE or base station may be only the average value of the group delays of the same type of product group, but it may also be the accurate value obtained by specially measuring the group delay of the UE or base station. Therefore, when the UE and the base station provide group delay information and also provide the quality of the group delay information, it helps to correctly use the group delay information provided by the UE and the base station in the positioning calculation. The group delay information quality indicator can be defined in different ways. For example, it is a parameter representing the error between the measured group delay information and the ideal group delay information, and includes the variance, average value, or standard deviation of the group delay error.

[0117] The method for correcting the transmission channel delay according to the embodiments of the present disclosure can obtain a more accurate transmission channel delay by defining the transmission channel delay Tx Delay parameter information, and can improve the positioning calculation ability.

[0118] Furthermore, in order for the node performing the positioning calculation to obtain the Tx Delay parameter information of the positioning reference signal transmission end so as to remove Tx Delay from the positioning measurement value supplied from the positioning reference signal reception end and improve the positioning accuracy, the present disclosure supports the UE, the base station, and the LMF to exchange the base station Tx Delay and UE Tx Delay parameter information proposed by the present disclosure. Therefore, the following modifications and enhancements are made to the 3GPP LPP (LTE Positioning Protocol), NRPPa (NR Positioning Protocol A), and RRC (Radio Resource Control) protocols.

[0119] The following LPP messages are corrected and added.

[0120] RequestCapabilities "Positioning Capability Requirements": The LMF uses the LPP RequestCapabilities message to request UE function information and various supported positioning methods. This disclosure proposes that the content of this message includes, in addition to existing information, for LMF-based positioning, the LMF can request the UE to provide whether the UE supports the provision of UE Tx Delay parameter information.

[0121] ProvideCapabilities "Positioning Capability Provision": The UE uses the LPP ProvideCapabilities message to indicate the UE's positioning capabilities to the LMF. For LMF-based positioning, this disclosure proposes that the content of this message includes, in addition to existing information, the UE can notify the LMF whether it supports the provision of UE Tx Delay information through ProvideCapabilities.

[0122] RequestUETxDelay "UE Tx Delay Request": An additional message in this disclosure. The LMF uses the LPP RequestUETxDelay message to request the UE to provide UE Tx Delay parameter information. ProvideUETxDelay "UE Tx Delay Provision": An additional message in this disclosure. The UE uses the LPP ProvideUETxDelay message to provide the UE Tx Delay to the LMF.

[0123] RequestAssistanceData: The UE uses the LPP RequestAssistanceData message to request assistance data from the LMF. For UE-based positioning, this disclosure proposes that the content of this message includes, in addition to existing information, the UE supports the request to provide base station Tx Delay information to the LMF.

[0124] ProvideAssistanceData: The LMF provides assistance data to the UE using the LPP ProvideAssistanceData message. For UE-based positioning, this disclosure proposes that in addition to the message content including existing information, the LMF is also permitted to provide the UE with base station Tx Delay information. The UE can use this information to improve DL-TDOA and Multi-RTT positioning accuracy.

[0125] ProvideLocationInformation: The UE provides positioning measurements or position estimations to the LMF using the LPP ProvideLocationInformation message. For LMF-based positioning, this disclosure proposes that in addition to the message content including existing information, the UE is also supported to provide the LMF with UE Tx Delay information. The LMF can use this information to improve UL-TDOA and Multi-RTT positioning accuracy.

[0126] The following NRPPa messages are corrected and added.

[0127] For NR (New Radio) positioning, NRPPa needs to support the LMF's request for the base station to provide group delay information and the base station's provision of group delay information to the LMF. Since 3GPP has not completed the NRPPa protocol for NR positioning, in this disclosure, the LMF uses the "TRP INFORMATION REQUEST" message to request the base station to provide TRP information, which may include the DL PRS settings of the TRP, UL Positioning SRS settings, etc., Assume that the base station uses the "TRP INFORMATION RESPONSE" message to provide the LMF with TRP information, which may include DL PRS settings necessary to support DL-DTOA and Multi-RTT, UL Positioning SRS settings necessary to support UL-DTOA and Multi-RTT, etc. Based on the above assumptions, the present disclosure In the "TRP INFORMATION REQUEST" message, the LMF supports requesting the base station to provide base station Tx Delay information. It is proposed that in the "TRP INFORMATION RESPONSE" message, the base station supports providing the base station Tx Delay information to the LMF.

[0128] Correct and add the following RRC messages.

[0129] Between the UE and the base station, the information exchange of UE Tx Delay and base station Tx Delay can also be completed by RRC signaling. For example, the UE can notify the serving base station of the UE Tx Delay via RRC, and then the serving base station can notify the LMF of the UE Tx Delay. The base station can also notify a certain UE of the base station Tx Delay by RRC unicast signaling, or notify each UE of the base station Tx Delay by RRC notification signaling.

[0130] Hereinafter, the correction method of the transmission channel delay according to the embodiment of the present disclosure will be further described from the positioning methods adopted by the location management function LMF, namely the downlink time difference of arrival positioning method, the uplink time difference of arrival positioning method, and the multi-round trip time positioning method.

[0131] In some alternative embodiments, the Location Management Function (LMF) performs positioning calculations using downlink arrival time difference positioning method. Based on the content of the above embodiments, when the transmitting node is a base station, receiving the transmitted channel delay (Tx Delay) parameter information from the transmitting node as described above and transmitting positioning reference signal setting information to the receiving node is sending a TRP information request message to the base station to request the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information; receiving the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information; sending a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a first positioning measurement value.

[0132] Specifically, the Location Management Function (LMF) sends a TRP information request message to the base station to request the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information.

[0133] In some embodiments, the TRP information request message is a TRP INFORMATION RESQUEST message.

[0134] In some embodiments, the TRP information includes information such as TRP ID and TRP antenna position coordinates, and the downlink positioning reference signal setting information is DL PRS setting data.

[0135] After receiving the TRP information request message sent from the LMF, the base station transmits a TRP information providing message to the LMF. The TRP information providing message is for providing positioning assistance data to the LMF. The positioning assistance data includes the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information. In some embodiments, the positioning assistance data is DL-TDOA positioning assistance data.

[0136] In some embodiments, the TRP information providing message is a TRP INFORMATION RESPONSE message.

[0137] The Location Management Function (LMF) receives the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information.

[0138] In some alternative embodiments, the base station includes a serving base station and at least one neighboring base station, and the downlink positioning reference signal setting information is determined by the serving base station. Correspondingly, in this embodiment, for the Location Management Function (LMF) to transmit a TRP information request message to the base station and receive the TRP information providing message sent from the base station, specifically, For the serving base station, the Location Management Function (LMF) transmits a TRP information request message to the serving base station. The TRP information request message is for simultaneously requesting the serving base station to provide downlink positioning reference signal setting information, the serving base station's own TRP information, and base station Tx Delay information. The LMF receives the TRP information providing message sent from the serving base station, and the TRP information providing message includes downlink positioning reference signal setting information, the serving base station's own TRP information, and base station Tx Delay information. For an adjacent base station, the Location Management Function (LMF) transmits a TRP information request message to the adjacent base station. The TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. The LMF receives a TRP information provision message transmitted from the adjacent base station, and the TRP information provision message includes the TRP information of the adjacent base station and the base station Tx Delay information.

[0139] After going through each of the above steps, the LMF has obtained the downlink positioning reference signal setting information and the base station Tx Delay parameter.

[0140] Next, the Location Management Function (LMF) transmits a positioning assistance data provision message to the UE. The positioning assistance data provision message is for providing the UE with the requested positioning assistance data, and the requested positioning assistance data for the UE includes the downlink positioning reference signal setting information. In some embodiments, the positioning assistance data message is a ProvideAssistanceData message.

[0141] The Location Management Function (LMF) transmits a positioning information request message to the UE. The positioning information request message is for requesting the UE to measure the downlink positioning reference signal transmitted from the base station and to return the measured positioning measurement value. The UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a first positioning measurement value. In some embodiments, the positioning information request message is a RequestLocationInformation message. In some embodiments, the first positioning measurement value is the downlink reference signal time difference (DL RSTD) or DL RSRP.

[0142] Correspondingly, correcting the positioning measurement value based on the above-mentioned Tx Delay parameter information means including correcting the first positioning measurement value based on the base station Tx Delay parameter information.

[0143] In the method for correcting transmission channel delay according to an embodiment of the present disclosure, the positioning management function corrects the positioning measurement value using the base station Tx Delay parameter information, so that the positioning accuracy of the downlink arrival time difference positioning method can be improved.

[0144] Based on the content of the above embodiment, before transmitting a TRP information request message to the base station, transmitting a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE, receiving a positioning capability provision message transmitted from the UE, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE, and further includes receiving a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0145] Specifically, before the LMF transmits a TRP information request message to the base station, the method for correcting transmission channel delay according to an embodiment of the present disclosure is that the LMF transmits a positioning capability request message to the UE and requests the UE to notify the LMF of the positioning functions that the UE can support. In some embodiments, the positioning capability request message is a RequestCapabilities message, in response to the positioning capability request message transmitted from the LMF, the UE transmits a positioning capability provision message to the LMF and reports the positioning functions supported by the UE, The LMF is to receive a positioning capability provision message transmitted from the UE, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability provision message is a ProvideCapabilities message, and the positioning function supported by the UE is LMF-based DL-TDOA positioning, and The UE transmits a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data. The LMF is to receive a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE. In some embodiments, the positioning assistance data request message is a RequestAssistanceData message, and the positioning assistance data further includes DL TDOA positioning assistance data.

[0146] Note that the UE in the embodiments of the present disclosure establishes a connection with a base station and is in a Radio Resource Control Connected (RRC_CONNECTED) state.

[0147] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to the LMF-based downlink time difference of arrival positioning method, and by correcting the positioning measurement value using the base station Tx Delay parameter information, the positioning accuracy of the positioning method can be improved.

[0148] FIG. 2 is a flowchart of the LMF-based DL-TDOA positioning method according to the embodiments of the present disclosure. The LMF-based DL-TDOA positioning method includes the following basic steps, namely, The step that the UE establishes a connection with a base station and is in a Radio Resource Control Connected (RRC_CONNECTED) state, and The step that the LMF transmits a "RequestCapabilities" message to the UE to request the UE to notify the LMF of the positioning functions that the UE can support, and The UE sends a "ProvideCapabilities" message to the LMF to report that the UE supports LMF-based DL-TDOA positioning, and The UE sends a "RequestAssistanceData" message to the LMF to request the LMF to provide DL TDOA positioning assistance data, and The LMF sends a "TRP INFORMATION RESQUEST" message to the base station. For the serving base station, the request message requests the serving base station to provide TRP information and DL PRS configuration data. For neighboring base stations, the request message only requests neighboring base stations to provide TRP information. In the present disclosure, the LMF can request the serving base station and neighboring base stations to provide base station Tx Delay information, and The base station sends a "TRP INFORMATION RESPONSE" message to the LMF. For the serving base station, the message is for providing DL-TDOA positioning assistance data (the data includes the TRP information of the serving base station and the DL PRS configuration data for DL-TDOA positioning) to the LMF. For neighboring base stations, the message provides the TRP information of the neighboring base stations to the LMF. In the present disclosure, the serving base station and neighboring base stations can provide base station Tx Delay information to the LMF, and The LMF sends a "ProvideAssistanceData" message to the UE to provide the UE with DL-TDOA positioning assistance data including the DL PRS configuration data requested by the UE, and The LMF sends a "RequestLocationInformation" message to the UE to request the UE to measure the DL PRS and feedback the measured positioning measurement values, and the UE measuring DL PRS using DL-TDOA positioning assistance data to obtain positioning measurements including RSTD and / or DL RSRP; The UE sends a "ProvideLocationInformation" message to the LMF, in which the message includes a positioning measurement value obtained by measuring the DL PRS, and the positioning measurement value includes an RSTD; The LMF may include steps of using the base station to provide base station Tx Delay information, correcting the RSTD measured by the UE to remove the influence of the base station Tx Delay on the RSTD measurement value, and then the LMF calculating the accurate location of the UE using the corrected RSTD measurement value.

[0149] 2 shows an example of an LMF-based DL-TDOA positioning flow, and only shows the serving base station, not the neighboring base station. The application of the transmission channel delay compensation method of the present disclosure is not limited to the step order shown in FIG.

[0150] In some alternative embodiments, the location management function (LMF) employs an uplink arrival time difference positioning method, and based on the content of the above embodiments, when the transmitting node is a user equipment (UE), receiving transmission channel delay (Tx Delay) parameter information transmitted from the transmitting node and transmitting positioning reference signal configuration information to the receiving node comprises: receiving UE Tx Delay parameter information acquired by the UE; Sending a TRP information request message to a base station, the TRP information request message being for requesting the base station to provide its own TRP information and uplink positioning reference signal configuration information; receiving the TRP information and uplink positioning reference signal configuration information; sending a measurement information request message to the base station, the message including the uplink positioning reference signal configuration information, and the base station measuring an uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal configuration information to obtain a second positioning measurement value; Based on the above-mentioned Tx Delay parameter information, correcting the positioning measurement value means that includes correcting the second positioning measurement value based on the UE Tx Delay parameter information.

[0151] Specifically, the Location Management Function (LMF) receives the UE Tx Delay parameter information obtained by the UE. The Location Management Function (LMF) sends a TRP information request message to the base station. The TRP information request message is used to request the base station to provide its own TRP information and uplink positioning reference signal setting information. In some embodiments, the TRP information request message is a TRP INFORMATION RESQUEST message.

[0152] In some embodiments, the TRP information includes information such as the TRP ID and the TRP antenna position coordinates, and the uplink positioning reference signal setting information includes UL SRS-Pos setting data.

[0153] The base station receives the TRP information request message sent from the LMF and sends a TRP information providing message to the LMF. The TRP information providing message includes the TRP information and the uplink positioning reference signal setting information, and the Location Management Function (LMF) receives the TRP information and the uplink positioning reference signal setting information.

[0154] In some alternative embodiments, the base station includes a serving base station and at least one neighboring base station, and the uplink positioning reference signal setting information is determined by the serving base station.

[0155] Correspondingly, in this embodiment, the Location Management Function (LMF) sending a TRP information request message to the base station and receiving the TRP information providing message sent from the base station specifically means that For the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide uplink positioning reference signal setting information and its own TRP information. The TRP information providing message includes the uplink positioning reference signal setting information and the TRP information of the serving base station itself. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide its TRP information, and the TRP information providing message includes the TRP information of the adjacent base station.

[0156] After going through each of the above steps, the LMF has obtained the uplink positioning reference signal setting information and the UE Tx Delay parameter.

[0157] Next, the Location Management Function (LMF) sends a measurement information request message including the uplink positioning reference signal setting information to the base station. The base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a second positioning measurement value. In some embodiments, the measurement information request message is a MEASUREMENT REQUEST message. In some embodiments, the second positioning measurement value is the Uplink Relative Time of Arrival (UL RTOA).

[0158] In some embodiments, the base station includes a serving base station and at least one adjacent base station. Correspondingly, when the LMF sends a measurement information request message to the base station, specifically, the LMF sends the measurement information request message to all base stations participating in UL-TDOA positioning, and all base stations participating in UL-TDOA positioning measure the uplink positioning reference signal transmitted from the UE using the uplink positioning reference signal setting information provided by the LMF.

[0159] Correspondingly, the above-mentioned correcting the positioning measurement value based on the Tx Delay parameter information includes correcting the second positioning measurement value based on the UE Tx Delay parameter information.

[0160] In the method for correcting the transmission channel delay according to the embodiment of the present disclosure, the positioning management function corrects the positioning measurement value using the UE Tx Delay information, so that the positioning accuracy of the uplink arrival time difference positioning method can be improved.

[0161] Based on the content of the above embodiment, before receiving the UE Tx Delay parameter information acquired by the UE, transmitting a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information; receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information; further including transmitting a UE Tx Delay request message to the UE, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information.

[0162] Specifically, before the positioning management function LMF receives the UE Tx Delay parameter information acquired by the UE, the LMF transmits a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information. In some embodiments, the positioning capability request message is a RequestCapabilities message; The LMF receives a positioning capability provision message transmitted from the UE. The positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information. In some embodiments, the positioning capability provision message is a ProvideCapabilities message, the positioning function supported by the UE is LMF-based UL-TDOA positioning, and The LMF further includes transmitting a UE Tx Delay request message to the UE, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information.

[0163] Note that the UE in the embodiments of the present disclosure establishes a connection with the base station and is in the Radio Resource Control Connected (RRC_CONNECTED) state.

[0164] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to the LMF-based uplink time difference of arrival positioning method, and by using the UE Tx Delay parameter information to correct the positioning measurement value, the positioning accuracy can be improved.

[0165] Figure 3 is a flowchart of the LMF-based UL-TDOA positioning method according to the embodiments of the present disclosure. As shown in Figure 3, the LMF-based UL-TDOA positioning method includes the following basic steps, namely, The step where the UE establishes a connection with the base station and is in the Radio Resource Control Connected (RRC_CONNECTED) state, and The step where the LMF transmits a "RequestCapabilities" message to the UE to request the UE to notify the LMF of the positioning functions that the UE can support. The message includes information contained in the current protocol. In addition, in the present disclosure, the LMF is added to request the UE to tell the LMF whether it has the ability to provide UE Tx Delay information. The UE transmits a "ProvideCapabilities" message and reports that the UE supports LMF-based UL-TDOA positioning. In the present disclosure, the UE further adds a step of reporting whether it has the ability to provide UE Tx Delay information. The LMF transmits a "RequestUETxDelay" message to the UE and requests the UE to provide UE Tx Delay parameter information. The UE transmits a "ProvideUETxDelay" message to the LMF and provides UE Tx Delay parameter information. The LMF transmits a "TRP INFORMATION RESQUEST" message to the base station. For the serving base station, the request message simultaneously requests the serving base station to provide TRP information and UL SRS-Pos setting data. For the neighboring base station, the request message only requests the neighboring base station to provide TRP information. The base station transmits a "TRP INFORMATION RESPONSE" message to the LMF. For the serving base station, the message is for providing the LMF with the TRP information of the serving base station and the UL SRS-Pos setting data for UL-TDOA positioning. For the neighboring base station, the message is for providing the LMF with the TRP information of the neighboring base station. The base station sets SRS-Pos for the UE by means of RRC signaling. The UE transmits SRS-Pos to the serving base station and a plurality of neighboring base stations based on RRC signaling. LMF transmits a "MEASUREMENT REQUEST" message to each base station participating in UL-TDOA positioning. The message includes UL SRS-Pos configuration data, requests the base station to measure the SRS-Pos transmitted from the UE, and feedback the measured positioning measurement value. All base stations participating in UL-TDOA positioning (including the serving base station and adjacent base stations of the UE) use the UL SRS-Pos configuration data provided by the LMF to measure the SRS-Pos signal and obtain the positioning measurement value for the UE. All base stations each transmit a "MEASUREMENT REPORT" message to the LMF, which includes the positioning measurement value (e.g., UL RTOA) obtained by measuring the UL SRS-Pos. LMF may use the UE Tx Delay information reported from the UE to correct the UL RTOA measurement value provided by the base station, that is, remove the influence of UE Tx Delay on the UL RTOA measurement value. Then, LMF calculates the position of the UE using the corrected UL RTOA measurement value.

[0166] In some alternative embodiments, the Location Management Function (LMF) adopts the multi-round trip time positioning method for positioning calculation. Based on the content of the above embodiments, when the transmission nodes are the base station and the UE respectively, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmission node and transmitting the positioning reference signal setting information to the receiving node is Receiving the UE Tx Delay parameter information obtained by the UE. Transmitting a TRP information request message to the base station. The TRP information request message is used to request the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. Receiving the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information; Sending a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures a downlink positioning reference signal transmitted from a base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value; Sending a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures an uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a fourth positioning measurement value, Correcting the positioning measurement value based on the Tx Delay parameter information described above includes: Correcting the third positioning measurement value based on the base station Tx Delay parameter information; Correcting the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0167] Specifically, the Location Management Function (LMF) receives the UE Tx Delay parameter information obtained by the UE.

[0168] The Location Management Function (LMF) sends a TRP information request message to the base station. The TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. In some embodiments, the TRP information request message is a TRP INFORMATION RESQUEST message.

[0169] In some embodiments, the TRP information includes information such as the TRP ID and the TRP antenna position coordinates. The uplink positioning reference signal setting information includes UL SRS-Pos setting data, and the downlink positioning reference signal setting information includes DL PRS setting data.

[0170] After receiving the TRP information request message sent from the LMF, the base station transmits a TRP information provision message to the LMF. The TRP information provision message includes the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. In some embodiments, the TRP information provision message is a TRP INFORMATION RESPONSE message.

[0171] The Location Management Function (LMF) receives the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information.

[0172] In some alternative embodiments, the base station includes a serving base station and at least one neighboring base station, and the positioning reference signal setting information is determined by the serving base station. Correspondingly, in this embodiment, the Location Management Function (LMF) transmitting a TRP information request message to the base station and receiving a TRP information provision message from the base station specifically means that For the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide uplink positioning reference signal setting information, downlink positioning reference signal setting information, its own TRP information, and base station Tx Delay parameter information. The TRP information provision message includes uplink positioning reference signal setting information, downlink positioning reference signal setting information, its own TRP information of the serving base station, and base station Tx Delay parameter information. For the neighboring base station, the TRP information request message is for requesting the neighboring base station to provide its TRP information and base station Tx Delay parameter information. The TRP information provision message includes the TRP information of the neighboring base station and base station Tx Delay parameter information.

[0173] After going through each of the above steps, the Location Management Function (LMF) has obtained the uplink positioning reference signal setting information, downlink positioning reference signal setting information, base station Tx Delay parameter, and UE Tx Delay parameter information.

[0174] Next, the Location Management Function (LMF) sends a positioning assistance data providing message to the UE. The positioning assistance data providing message is for providing the positioning assistance data required by the UE to the UE, and the positioning assistance data required by the UE includes the downlink positioning reference signal setting information. In some embodiments, the positioning assistance data message is a ProvideAssistanceData message.

[0175] The Location Management Function (LMF) sends a positioning information request message to the UE. The positioning information request message requests the UE to measure the downlink positioning reference signal transmitted from the base station and is for returning the measured positioning measurement value. The UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value. In some embodiments, the positioning information request message is a RequestLocationInformation message. In some embodiments, the third positioning measurement value is the UE Rx - Tx Time Difference (UE transmit - receive time difference).

[0176] And the Location Management Function (LMF) sends a measurement information request message including the uplink positioning reference signal setting information to the base station. The base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a fourth positioning measurement value. In some embodiments, the measurement information request message is a MEASUREMENT REQUEST message. In some embodiments, the fourth positioning measurement value is the gNB Rx - Tx Time Difference (base station transmit - receive time difference).

[0177] In some embodiments, the base station includes a serving base station and at least one neighboring base station. Correspondingly, the LMF sending a measurement information request message to the base station specifically means that the LMF sends a measurement information request message to all base stations participating in the Multi-RTT positioning, and all base stations participating in the Multi-RTT positioning measure the uplink positioning reference signal transmitted from the UE by using the uplink positioning reference signal setting information provided by the LMF.

[0178] Correspondingly, the LMF correcting the positioning measurement value based on the Tx Delay parameter information is correcting the third positioning measurement value based on the base station Tx Delay parameter information, and correcting the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0179] In the transmission channel delay correction method according to the embodiments of the present disclosure, the positioning management function corrects the positioning measurement value by using the base station Tx Delay parameter information and the UE Tx Delay information, so that the positioning accuracy of the uplink arrival time difference positioning method can be improved.

[0180] Based on the content of the above embodiments, the transmission channel delay correction method is sending a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information, and receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning function supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information. To send a UE Tx Delay request message to the UE, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information. To further receive a positioning assistance data request message sent from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0181] Specifically, the LMF sends a positioning capability request message to the UE, and the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information. In some embodiments, the positioning capability request message is a RequestCapabilities message.

[0182] The LMF receives a positioning capability provision message sent from the UE, and the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information. In some embodiments, the positioning capability provision message is a ProvideCapabilities message, and the positioning function supported by the UE is LMF-based Multi-RTT positioning.

[0183] The LMF sends a UE Tx Delay request message to the UE, and the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information.

[0184] Note that the UE in the embodiments of the present disclosure establishes a connection with the base station and is in the Radio Resource Control Connected (RRC_CONNECTED) state.

[0185] Next, the LMF receives the positioning assistance data request message sent from the UE. The positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE. In some embodiments, the positioning assistance data request message is a RequestAssistanceData message. Then, in response to the positioning assistance data request message, the LMF acquires the requested positioning assistance data for the UE and then transmits it to the UE.

[0186] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to the LMF-based multi-round trip time positioning method. By using the base station Tx Delay parameter information and the UE Tx Delay information, the position management function corrects the positioning measurement value, thereby improving the positioning accuracy.

[0187] FIG. 4 is a flowchart of the LMF-based Multi-RTT positioning method according to the embodiments of the present disclosure. The LMF-based Multi-RTT positioning method includes the following basic steps, namely, The UE establishes a connection with the base station and is in the Radio Resource Control Connected (RRC_CONNECTED) state. The LMF transmits a "RequestCapabilities" message to the UE, which is a step of requesting the UE to notify the LMF of the positioning functions that the UE can support. The message contains information included in the current protocol. In the present disclosure, the LMF further requests the UE to inform the LMF whether it has the ability to provide UE Tx Delay information. The UE transmits a "ProvideCapabilities" message to the LMF, which is a step of reporting that the UE supports LMF-based Multi-RTT positioning. In the present disclosure, the UE further adds the step of reporting whether it has the ability to provide UE Tx Delay information. The LMF sends a "RequestUETxDelay" message to the UE, and requests the UE to provide UE Tx Delay parameter information; The UE sends a "RequestUETxDelay" message to the LMF, and provides UE Tx Delay parameter information; The UE sends a "RequestAssistanceData" message to the LMF, and requests the LMF to provide Multi-RTT assistance data; The LMF sends a "TRP INFORMATION RESQUEST" message to the base station. For the serving base station, the request message simultaneously requests the serving base station to provide TRP information (such as TRP ID, TRP antenna position coordinates, etc.), DL PRS configuration data, and UL SRS-Pos configuration data. For the neighboring base station, the request message only requests the neighboring base station to provide TRP information. In the present disclosure, the LMF can request the base station to provide base station Tx Delay information; The base station sends a "TRP INFORMATION RESPONSE" message to the LMF. For the serving base station, the message provides the LMF with the TRP information, DL PRS configuration data, and UL SRS-Pos configuration data of the serving base station. For the neighboring base station, the message provides the LMF with the TRP information of the neighboring base station. In the present disclosure, the serving base station and the neighboring base station can provide the LMF with base station Tx Delay information; The LMF sends a "ProvideAssistanceData" message to the UE, and provides the positioning assistance data including the DL PRS configuration data requested by the UE; The LMF transmits a "RequestLocationInformation" message to the UE, requests the UE to measure the DL PRS of the base station, and feeds back the measured positioning measurement value; The UE measures the downlink signal using positioning assistance data (e.g., PRS configuration data) and obtains a positioning measurement value including the UE Rx-Tx Time Difference; The UE transmits a "ProvideLocationInformation" message to the LMF, which includes the positioning measurement value obtained by measuring the downlink PRS, and the positioning measurement value includes the UE Rx-Tx Time Difference; The base station sets the SRS-Pos for the UE by means of RRC signaling; The UE transmits the SRS-Pos to the serving base station and adjacent base stations based on the RRC signaling; The LMF transmits a "MEASUREMENT REQUEST" message to each base station participating in the Multi-RTT positioning. The message includes UL SRS-Pos configuration data, requests the base station to measure the SRS-Pos transmitted from the UE, and feed back the measured positioning measurement value; All base stations participating in the Multi-RTT positioning use the UL SRS-Pos configuration data provided by the LMF to measure the SRS-Pos signal and obtain a positioning measurement value; All base stations transmit a "MEASUREMENT REPORT" message to the LMF, which includes the positioning measurement value obtained by measuring the UL SRS-Pos, and the positioning measurement value includes the gNB Rx-Tx Time Difference; The LMF may include a step of using UE Tx Delay information provided by the UE to remove the influence of the UE Tx Delay on the gNB transmission and reception time difference measurement value (corrected gNB transmission and reception time difference = gNB transmission and reception time difference before correction - UE Tx Delay), and using base station Tx Delay information provided by the base station to remove the influence of the base station Tx Delay on the UE transmission and reception time difference measurement value (corrected UE transmission and reception time difference = UE transmission and reception time difference before correction - base station Tx Delay), and then the LMF calculates the exact location of the UE using the corrected UE transmission and reception time difference and the gNB transmission and reception time difference measurement value.

[0188] FIG. 5 is a second flowchart of a method for compensating for transmission channel delay according to an embodiment of the present disclosure, which is applied to a user equipment (UE), and includes the following steps 500 and 501.

[0189] Step 500: Receive transmission channel delay UE Tx Delay parameter information corresponding to the UE.

[0190] Specifically, the embodiment of the present disclosure further describes a method for LMF-based positioning method, that is, still performing positioning calculation by the location management function LMF, and correcting transmission channel delay from the user equipment UE side.

[0191] First, the user equipment calculates and obtains its own transmission channel delay UE Tx Delay parameter information.

[0192] Step 501: Send the UE Tx Delay parameter information to a location management function (LMF), and the LMF corrects the positioning measurement value according to the UE Tx Delay parameter information; Here, the positioning measurement value is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal configuration information, and / or is obtained by the UE measuring the downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal configuration information.

[0193] Specifically, the UE transmits the UE Tx Delay parameter information to the Location Management Function (LMF), and the LMF corrects the positioning measurement value based on the UE Tx Delay parameter information.

[0194] When the Location Management Function (LMF) performs positioning calculations using two positioning methods, namely the uplink arrival time difference positioning method and the multi-round trip time positioning method, it is necessary to use the UE Tx Delay parameter information. Therefore, in the uplink arrival time difference positioning method, the positioning measurement value is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information, that is, it is the second positioning measurement value in the embodiment of the method described above. In the multi-round trip time positioning method, the positioning measurement value includes the value obtained by the UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and the value obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information. That is, the positioning measurement value includes the third and fourth positioning measurement values in the embodiment of the method described above.

[0195] The method for correcting the transmission channel delay according to the embodiment of the present disclosure is applicable to the LMF-based uplink arrival time difference positioning method and the multi-round trip time positioning method. By providing the UE Tx Delay parameter information to the location management function and having the LMF correct the positioning measurement value, the influence of the UE transmission channel delay on the time-related positioning measurement value can be removed, and the positioning accuracy can be effectively improved.

[0196] Based on the content of the above embodiment, transmitting the UE Tx Delay parameter information to the Location Management Function (LMF) described above is receiving the positioning capability requirement message transmitted from the LMF, where the positioning capability requirement message is for the UE to request the LMF to notify whether the UE supports the positioning function and whether it has the ability to provide the UE Tx Delay parameter information. Sending a positioning capability providing message to the LMF, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information Receiving a UE Tx Delay request message sent from the LMF, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information Including sending a UE Tx Delay providing message including the UE Tx Delay parameter information to the LMF

[0197] Specifically, the embodiments of the present disclosure are applicable to the LMF-based uplink arrival time difference positioning method and the LMF-based multi-round trip time positioning method. Therefore, for the related descriptions and understandings in the embodiments of the above transmission channel delay correction method with the location management function LMF as the execution entity, corresponding references can be made here, and detailed descriptions are omitted here

[0198] The transmission channel delay correction method according to the embodiments of the present disclosure provides UE Tx Delay parameter information to the location management function, and the LMF corrects the positioning measurement value, so as to remove the influence of the UE transmission channel delay on the positioning measurement value related to time, and can effectively improve the positioning accuracy

[0199] Based on the content of the above embodiments, after sending the UE Tx Delay providing message to the LMF as described above Further including receiving the uplink positioning reference signal setting information sent by the base station through RRC signaling, sending an uplink positioning reference signal to the base station, the base station measuring the uplink positioning reference signal, and sending the obtained positioning measurement value to the LMF, and the LMF correcting the positioning measurement value based on the UE Tx Delay parameter information

[0200] Specifically, the embodiments of the present disclosure are applied to the LMF-based uplink arrival time difference positioning method. After the UE transmits a UE Tx Delay providing message to the LMF, the UE receives the uplink positioning reference signal setting information transmitted by the base station through RRC signaling, and then, based on the RRC signaling, transmits an uplink positioning reference signal to the base station. The base station measures the uplink positioning reference signal, and transmits the obtained positioning measurement value to the LMF. The LMF corrects the positioning measurement value obtained by the base station measurement based on the UE Tx Delay parameter information.

[0201] In one embodiment, the UE transmits an uplink positioning reference signal to all base stations participating in positioning based on RRC signaling, where all base stations participating in positioning include the serving base station and at least one neighboring base station.

[0202] The correction method for the transmission channel delay according to the embodiments of the present disclosure is applied to the LMF-based uplink arrival time difference positioning method. By providing UE Tx Delay parameter information to the location management function LMF and having the LMF correct the positioning measurement value, the positioning accuracy can be improved.

[0203] Based on the content of the above embodiments, after transmitting the UE Tx Delay providing message to the LMF as described above, transmit a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data, receive a positioning assistance data providing message including downlink positioning reference signal setting information transmitted from the LMF, measure the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value, transmit the third positioning measurement value to the LMF, and the LMF corrects the third positioning measurement value based on the base station Tx Delay parameter information, The UE receives the uplink positioning reference signal setting information transmitted by the base station through RRC signaling, transmits an uplink positioning reference signal to the base station, the base station measures the uplink positioning reference signal to obtain a fourth positioning measurement value, and transmits the fourth positioning measurement value to the LMF. The LMF further corrects the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0204] Specifically, the embodiments of the present disclosure are applicable to the LMF-based multi-round trip time positioning method. For the related descriptions and understandings in the embodiments of the above-mentioned transmission channel delay correction method with the location management function LMF as the execution entity, corresponding references can be made here, and detailed descriptions are omitted here.

[0205] The transmission channel delay correction method according to the embodiments of the present disclosure is applicable to the LMF-based multi-round trip time positioning method. By providing the UE Tx Delay parameter information to the location management function LMF and the LMF correcting the positioning measurement value, the positioning accuracy can be improved.

[0206] FIG. 6 is a third flowchart of the transmission channel delay correction method according to the embodiments of the present disclosure, which is applied to a base station and includes the following steps 600 and 601.

[0207] Step 600: Obtain the transmission channel delay base station Tx Delay parameter information corresponding to the base station.

[0208] Specifically, the embodiments of the present disclosure explain the transmission channel delay correction method from the base station side for the LMF-based positioning method, that is, still performing positioning calculations by the location management function LMF.

[0209] First, the base station calculates and obtains its own transmission channel delay base station Tx Delay parameter information.

[0210] Step 601: Transmit the base station Tx Delay parameter information to the Location Management Function (LMF), and the LMF corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment (UE) measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0211] Specifically, the base station transmits the base station Tx Delay parameter information to the Location Management Function (LMF), and the LMF corrects the positioning measurement value based on the base station Tx Delay parameter information.

[0212] When the Location Management Function (LMF) performs positioning calculations using two positioning methods, namely the downlink arrival time difference positioning method and the multi-round trip time positioning method, it is necessary to use the base station Tx Delay parameter information. Therefore, in the downlink arrival time difference positioning method, the positioning measurement value is obtained by the user equipment (UE) measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, that is, it is the first positioning measurement value in the embodiment of the above-described method. In the multi-round trip time positioning method, the positioning measurement value includes the value obtained by the UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information and the value obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information. That is, the positioning measurement value includes the third and fourth positioning measurement values in the embodiment of the above-described method.

[0213] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to the LMF-based downlink arrival time difference positioning method and the multi-round trip time positioning method. By providing the base station Tx Delay parameter information to the location management function and having the LMF correct the positioning measurement value, the influence of the base station transmission channel delay on the positioning measurement value related to time can be removed, and the positioning accuracy can be effectively improved.

[0214] Based on the content of the above embodiments, transmitting the base station Tx Delay parameter information to the location management function LMF described above includes: Receiving the TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF, Here, the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information. The TRP information providing message includes the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, or The TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. The TRP information providing message includes the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information.

[0215] Specifically, the base station and the location management function LMF transmit the base station Tx Delay parameter information and the uplink / downlink positioning reference signal setting information based on the NRPPa message.

[0216] The TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information.

[0217] In some embodiments, the TRP information request message is a TRP INFORMATION RESQUEST message.

[0218] In some embodiments, the TRP information includes information such as the TRP ID and the TRP antenna position coordinates, and the downlink positioning reference signal setting information is DL PRS setting data.

[0219] After receiving the TRP information request message sent from the LMF, the base station sends a TRP information providing message to the LMF. The TRP information providing message is for providing positioning assistance data to the LMF. The positioning assistance data includes the TRP information, the downlink positioning reference signal setting information, and the base station Tx Delay parameter information. In some embodiments, the positioning assistance data is DL-TDOA positioning assistance data.

[0220] In some embodiments, the TRP information providing message is a TRP INFORMATION RESPONSE message.

[0221] In some embodiments, the base station includes a serving base station and at least one neighboring base station, and the uplink positioning reference signal setting information and / or the downlink positioning reference signal setting information are determined by the serving base station.

[0222] Correspondingly, in this embodiment, receiving the TRP information request message sent from the LMF and sending a TRP information providing message to the LMF specifically means For the serving base station, the serving base station receives the TRP information request message sent from the LMF. The TRP information request message is used to simultaneously request the serving base station to provide downlink positioning reference signal setting information, the TRP information of the serving base station itself, and the base station Tx Delay information. The serving base station sends a TRP information providing message to the LMF. The TRP information providing message includes the downlink positioning reference signal setting information, the TRP information of the serving base station itself, and the base station Tx Delay information. For the neighboring base station, the neighboring base station receives the TRP information request message sent from the LMF. The TRP information request message is used to request the neighboring base station to provide the TRP information of the neighboring base station and the base station Tx Delay information. The neighboring base station sends a TRP information providing message to the LMF. The TRP information providing message includes the TRP information of the neighboring base station and the base station Tx Delay information.

[0223] The method for correcting the transmission channel delay according to the embodiment of the present disclosure can effectively improve the positioning accuracy by providing the base station Tx Delay parameter information to the location management function so that the LMF corrects the positioning measurement value.

[0224] FIG. 7 is the fourth flowchart of the method for correcting the transmission channel delay according to the embodiment of the present disclosure, which is applied to the user terminal UE and includes the following steps 700 and 701.

[0225] Step 700: Receive the transmission channel delay UE Tx Delay parameter information corresponding to the UE.

[0226] Specifically, in the embodiment of the present disclosure, for the UE-based positioning method, the execution entity is the user terminal UE, that is, the user terminal UE performs positioning calculation as a computing node.

[0227] In the related protocol specifications, the user equipment UE supports performing positioning calculations using two positioning methods: UE-based downlink arrival time difference positioning method and UE-based multi-round trip time positioning method.

[0228] First, the UE calculates and obtains the transmission channel delay UE Tx Delay parameter information corresponding to itself.

[0229] Step 701: Receive the base station Tx Delay parameter information transmitted from the base station or the location management function LMF.

[0230] Specifically, in the UE-based downlink arrival time difference positioning method, the UE needs to use the base station Tx Delay parameter information, and in the UE-based multi-round trip time positioning method, the UE needs to use the base station Tx Delay parameter information and its own UE Tx Delay parameter information.

[0231] The UE may directly receive the base station Tx Delay parameter information transmitted from the base station, or may receive the base station Tx Delay parameter information transferred by the location management function LMF.

[0232] Step 702: Correct the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0233] Specifically, in the UE-based downlink arrival time difference positioning method, the transmitting node is the base station, the receiving node is the UE, the positioning reference signal is the downlink positioning reference signal, and the positioning reference signal setting information is the downlink positioning reference signal setting information. The UE corrects the positioning measurement value using the base station Tx Delay parameter information. At this time, the positioning measurement value is obtained by the UE measuring the positioning reference signal transmitted from the base station based on the positioning reference signal setting information. Here, the positioning reference signal setting information is determined by the base station and transferred to the UE by the LMF.

[0234] In the UE-based multi-round trip time positioning method, the transmitting nodes are the base station and the UE respectively. Correspondingly, the receiving nodes are the UE and the base station respectively. The positioning reference signals are the downlink positioning reference signal and the uplink positioning reference signal respectively. The positioning reference signal setting information is the downlink positioning reference signal setting information and the uplink positioning reference signal setting information respectively. The UE corrects the positioning measurement value using the base station Tx Delay parameter information and its own UE Tx Delay parameter information. At this time, the positioning measurement value is the positioning measurement value obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information, and the positioning measurement value obtained by the UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information.

[0235] In some alternative embodiments, the positioning measurement value includes, but is not limited to, at least one of the downlink reference signal time difference DL RSTD, the base station Rx-Tx time difference gNB Rx-Tx Time Difference, and the UE Rx-Tx time difference UE Rx-Tx Time Difference.

[0236] In some alternative embodiments, the following corrections are performed for different types of positioning methods respectively.

[0237] 1) For the downlink arrival time difference positioning method (DL-TDOA) DL RSTD = DL RSTD - Base Station Tx Delay, 2) For the Multi - RTT (Multi - Round Trip Time) positioning method gNB Rx - Tx Time Difference = gNB Rx - Tx Time Difference - UE Tx Delay, UE Rx - Tx Time Difference = UE Rx - Tx Time Difference - Base Station Tx Delay.

[0238] Based on the corrected positioning measurement values and information such as the base station antenna position of the base station, the UE can perform positioning calculations, thereby realizing accurate positioning.

[0239] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to various UE - based positioning methods, and can remove the influence of the transmission channel delay on the positioning measurement values related to time, and effectively improve the positioning accuracy.

[0240] Based on the content of the above - mentioned embodiments, the UE Tx Delay parameter information or the base station Tx Delay parameter information includes the absolute group delay information of the transmission channel, the relative group delay information of the transmission channel, and the quality indicator of the transmission channel group delay information. Here, The absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency. The relative group delay information of the transmission channel is a set of parameters related to sub - carrier frequencies in the bandwidth covered by the band or the carrier frequency. The quality indicator of the transmission channel group delay information includes error parameters.

[0241] Specifically, the UE Tx Delay parameter information or the base station Tx Delay parameter information can refer to the description of the Tx Delay parameter information in the above-described embodiments, and the detailed description is omitted here.

[0242] Based on the content of the above embodiment, receiving the base station Tx Delay parameter information transmitted from the base station or the location management function LMF described above includes receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of the adjacent base stations transferred by the serving base station, or includes receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of the adjacent base stations transferred by the LMF, or includes receiving the base station Tx Delay parameter information of the serving base station and the adjacent base stations transferred by the LMF.

[0243] Specifically, the base station includes a serving base station and at least one adjacent base station.

[0244] The base station Tx Delay parameter information of the serving base station may be transmitted to the UE by the serving base station itself or transferred via the location management function LMF.

[0245] The base station Tx Delay parameter information of the adjacent base stations may be transferred to the UE via the location management function LMF, or may be transferred to the server via the Xn interface between the adjacent base stations and the serving base station and then transmitted by the serving base station.

[0246] Therefore, receiving the base station Tx Delay parameter information transmitted from the base station or the location management function LMF Receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of the neighboring base stations transferred by the serving base station, or, Receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of the neighboring base stations transferred by the LMF, or, Including receiving the base station Tx Delay parameter information of the serving base station and the neighboring base stations transferred by the LMF.

[0247] The method for correcting the transmission channel delay according to the embodiment of the present disclosure can provide the UE with the base station Tx Delay parameter information, so that the UE can remove the influence of the base station transmission channel delay on the positioning measurement value related to time and effectively improve the positioning accuracy.

[0248] Hereinafter, the method for correcting the transmission channel delay according to the embodiment of the present disclosure will be further described respectively from the positioning methods adopted by the user terminal UE, that is, the downlink arrival time difference positioning method and the multi-round trip time positioning method.

[0249] In some alternative embodiments, based on the content of the above embodiments, when the transmission node is a base station, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above, Receiving a positioning capability request message sent from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE, Sending a positioning capability provision message to the LMF, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE, Sending a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data, Receiving a positioning assistance data providing message transmitted from the LMF, wherein the positioning assistance data providing message is for providing positioning assistance data including downlink positioning reference signal setting information to the UE Receiving a positioning information request message transmitted from the LMF, wherein the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station Further including measuring a downlink positioning reference signal transmitted from a base station using the downlink positioning reference signal setting information to obtain a fifth positioning measurement value Specifically, in the embodiments of the present disclosure, correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information specifically includes Correcting the fifth positioning measurement value based on the base station Tx Delay parameter information

[0250] Specifically, in the embodiments of the present disclosure, the user equipment UE adopts the downlink arrival time difference positioning method. The UE needs to measure the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information determined by the base station to obtain a fifth positioning measurement value. The UE can obtain the downlink positioning reference signal setting information from the Location Management Function LMF

[0251] It should be noted that the UE in the embodiments of the present disclosure establishes a connection with the base station and is in the Radio Resource Control Connected (RRC_CONNECTED) state

[0252] First, the UE receives a positioning capability request message transmitted from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability request message is a RequestCapabilities message

[0253] The UE sends a positioning capability provision message to the LMF, and the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability provision message is a ProvideCapabilities message, and the positioning function supported by the UE is UE-based DL-TDOA positioning.

[0254] The UE sends a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data. In some embodiments, the positioning assistance data request message is a RequestAssistanceData message, and the positioning assistance data is DL TDOA positioning assistance data.

[0255] The UE receives a positioning assistance data provision message sent from the LMF, and the positioning assistance data provision message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information. In some embodiments, the positioning assistance data provision message is a ProvideAssistanceData message.

[0256] Next, the UE receives a positioning information request message sent from the LMF, and the positioning information request message is for requesting the UE to measure the downlink positioning reference signal sent from the base station. In some embodiments, the positioning information request message is a RequestLocationInformation message.

[0257] The UE measures the downlink positioning reference signal sent from the base station using the downlink positioning reference signal setting information to obtain a fifth positioning measurement value. In some embodiments, the fifth positioning measurement value is downlink reference signal time difference DL RSTD or DL RSRP.

[0258] Correspondingly, correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information as described above specifically means Correcting the fifth positioning measurement value based on the base station Tx Delay parameter information.

[0259] In the correction method of the transmission channel delay according to the embodiment of the present disclosure, the UE corrects the positioning measurement value using the base station Tx Delay parameter information, so that the positioning accuracy of the downlink arrival time difference positioning method can be improved.

[0260] In some alternative embodiments, based on the content of the above embodiments, when the transmission node is a base station and a UE, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, Receiving a positioning capability request message sent from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; Sending a positioning capability provision message to the LMF, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE; Sending a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data; Receiving a positioning assistance data provision message sent from the LMF, where the positioning assistance data provision message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information; Receiving a positioning information request message sent from the LMF, where the positioning information request message is for requesting the UE to measure the downlink positioning reference signal sent from the base station; Measuring the downlink positioning reference signal sent from the base station using the positioning assistance data to obtain a sixth positioning measurement value; Receiving the uplink positioning reference signal setting information sent by the serving base station through RRC signaling; Based on RRC signaling, transmit an uplink positioning reference signal to all base stations participating in positioning, and all base stations participating in the positioning measure the uplink positioning reference signal based on the uplink positioning reference signal setting information transmitted from the LMF to obtain a seventh positioning measurement value, and further include transmitting the seventh positioning measurement value to the UE by the LMF. Here, all base stations participating in positioning include the serving base station and at least one neighboring base station. Based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above, correcting the positioning measurement value specifically includes: correcting the sixth positioning measurement value based on the base station Tx Delay parameter information, and correcting the seventh positioning measurement value based on the UE Tx Delay parameter information.

[0261] Specifically, in the embodiments of the present disclosure, the user equipment UE adopts the multi-round trip time positioning method.

[0262] Note that the UE in the embodiments of the present disclosure establishes a connection with the base station and is in the Radio Resource Control Connected (RRC_CONNECTED) state.

[0263] The UE receives the positioning capability request message transmitted from the LMF. The positioning capability request message is used to request the UE to notify the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability request message is the RequestCapabilities message.

[0264] The UE transmits a positioning capability providing message to the LMF. The positioning capability providing message is used to notify the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability providing message is the ProvideCapabilities message, and the positioning function supported by the UE is UE-based Multi-RTT positioning.

[0265] The UE transmits a positioning assistance data request message to the LMF to request the provision of positioning assistance data. In some embodiments, the positioning assistance data request message is RequestAssistanceData, and the positioning assistance data is Multi-RTT assistance data.

[0266] The UE receives a positioning assistance data provision message transmitted from the LMF, and the positioning assistance data provision message is for providing positioning assistance data including downlink positioning reference signal setting information to the UE. In some embodiments, the positioning assistance data provision message is ProvideAssistanceData, and the downlink positioning reference signal setting information is determined by the serving base station.

[0267] The UE receives a positioning information request message transmitted from the LMF, and the positioning information request message is for requesting the UE to measure the downlink positioning reference signal transmitted from the base station. In some embodiments, the positioning information request message is RequestLocationInformation, and in some embodiments, the downlink positioning reference signal is DL PRS.

[0268] The UE measures the downlink positioning reference signal transmitted from the base station using the positioning assistance data to obtain a sixth positioning measurement value. In some embodiments, the sixth positioning measurement value is the UE Rx-Tx Time Difference of the UE.

[0269] The UE receives uplink positioning reference signal setting information transmitted by the serving base station through RRC signaling, and the serving base station sets an uplink positioning reference signal for the UE through RRC signaling. In some embodiments, the uplink positioning reference signal is UL SRS-Pos.

[0270] The UE transmits an uplink positioning reference signal to all base stations participating in positioning based on RRC signaling. All base stations participating in the positioning measure the uplink positioning reference signal based on the uplink positioning reference signal setting information transmitted from the LMF, obtain a seventh positioning measurement value, and the LMF transmits the seventh positioning measurement value to the UE. In some embodiments, the seventh positioning measurement value is the base transceiver time difference gNB Rx-Tx Time Difference.

[0271] Here, the LMF transmitting the seventh positioning measurement value to the UE includes the UE transmitting a Multi-RTT measurement information request to the LMF to request the LMF to provide information regarding Multi-RTT measurement, and the LMF transmitting a Multi-RTT measurement information provision to the UE to transmit the gNB transceiver time difference measured by the base station and the base station Tx Delay to the UE.

[0272] The method for correcting the transmission channel delay according to the embodiments of the present disclosure can improve the positioning accuracy of the multi-round trip time positioning method by the UE correcting the positioning measurement value using the base station Tx Delay parameter information and the UE Tx Delay parameter information.

[0273] FIG. 8 is a flowchart of a UE-based Multi-RTT positioning method according to an embodiment of the present disclosure. The UE establishes a connection with the base station and enters the radio resource control connection (RRC_CONNECTED) state. The LMF transmits a "RequestCapabilities" message to the UE and requests the UE to notify the LMF of the positioning functions that the UE can support. The UE transmits a "ProvideCapabilities" message to the LMF and reports that the UE supports UE-based Multi-RTT positioning. The UE transmits a "RequestAssistanceData" message to the LMF to request the LMF to provide multi-RTT assistance data, and The LMF transmits a "TRP INFORMATION RESQUEST" message to the base station. For the serving base station, the request message simultaneously requests the serving base station to provide TRP information (e.g., TRP ID, TRP antenna position coordinates, etc.), DL PRS configuration data, and UL SRS-Pos configuration data. For the neighboring base station, the request message only requests the neighboring base station to provide TRP information. In the present disclosure, the LMF can request the base station to provide base station Tx Delay information, and The base station transmits a "TRP INFORMATION RESPONSE" message to the LMF. For the serving base station, the message provides the DL PRS configuration data and the UL SRS-Pos configuration data to the LMF. For the neighboring base station, the message provides the TRP information of the neighboring base station to the LMF. In the present disclosure, the serving base station and the neighboring base station can provide the base station Tx Delay information to the LMF, and The LMF transmits a "ProvideAssistanceData" message to the UE to provide the positioning assistance data including the DL PRS configuration data requested by the UE, and The LMF transmits a "RequestLocationInformation" message to the UE to request the UE to measure the DL PRS of the base station, and The UE measures the downlink signal using the positioning assistance data (e.g., PRS configuration data) and obtains positioning measurement values including the UE Rx-Tx Time Difference, and The base station sets the SRS-Pos for the UE by RRC signaling, and The UE transmits SRS-Pos to the serving base station and neighboring base stations based on RRC signaling; The LMF transmits a "MEASUREMENT REQUEST" message to each base station participating in the Multi-RTT positioning. The message includes UL SRS-Pos configuration data, requests the base station to measure the SRS-Pos transmitted from the UE, and feedback the measured positioning measurement value; All base stations participating in the Multi-RTT positioning use the UL SRS-Pos configuration data provided by the LMF to measure the SRS-Pos signal and obtain the positioning measurement value; The base station transmits a "MEASUREMENT REPORT" message to the LMF, which includes the positioning measurement value obtained by measuring the UL SRS-Pos, and the positioning measurement value includes the gNB Rx-Tx Time Difference; The UE transmits a "Multi-RTT MEASUREMENT REQUEST" to the LMF, requesting the LMF to provide information related to the Multi-RTT measurement; The LMF transmits a "Multi-RTT MEASUREMENT REPORT" to the UE, and the LMF in the message transmits the gNB Rx-Tx Time Difference measured by the base station and the base station Tx Delay to the UE; The UE uses its own UE Tx Delay information to remove the influence of UE Tx Delay on the gNB transmission and reception time difference measurement value (corrected gNB transmission and reception time difference = uncorrected gNB transmission and reception time difference - UE Tx Delay), and uses the base station Tx Delay information provided by the base station to remove the influence of the base station Tx Delay on the UE transmission and reception time difference measurement value (corrected UE transmission and reception time difference = uncorrected UE transmission and reception time difference - base station Tx Delay). Then, the UE includes the step of calculating the accurate position of the UE using the corrected UE transmission and reception time difference and the gNB transmission and reception time difference measurement value.

[0274] FIG. 9 is the fifth flowchart of the method for correcting the transmission channel delay according to the embodiment of the present disclosure, which is applied to the location management function LMF and includes the following steps 900 to 902.

[0275] Step 900: Obtain the base station Tx Delay parameter information and the positioning reference signal setting information.

[0276] Specifically, the embodiment of the present disclosure further describes the method for correcting the transmission channel delay from the position management function side for the UE-based positioning method, that is, the positioning calculation is still performed by the user terminal UE.

[0277] In the related protocol specifications, the user equipment UE supports performing positioning calculations using two positioning methods: the UE-based downlink arrival time difference positioning method and the UE-based multi-round trip time positioning method. In the UE-based downlink arrival time difference positioning method, the UE needs to use the base station Tx Delay parameter information. In the UE-based multi-round trip time positioning method, the UE needs to use the base station Tx Delay parameter information and its own UE Tx Delay parameter information. The UE may directly receive the base station Tx Delay parameter information transmitted from the base station, or may receive the base station Tx Delay parameter information transferred by the location management function LMF. In the embodiments of the present disclosure, the base station Tx Delay parameter information is transferred by the location management function LMF.

[0278] First, the location management function LMF obtains the base station Tx Delay parameter information and the positioning reference signal setting information from the base station.

[0279] Step 901: Transmit the positioning reference signal setting information to the receiving node. Here, in the UE-based downlink arrival time difference positioning method, when the transmitting node is the base station, the receiving node is the UE, and the location management function LMF transmits the downlink positioning reference signal setting information obtained from the base station to the receiving node. In the UE-based multi-round trip time positioning method, the transmitting nodes are the UE and the base station respectively, the receiving nodes correspond to the base station and the UE respectively, the location management function LMF transmits the downlink positioning reference signal setting information obtained from the base station to the UE, and the location management function LMF transmits the uplink positioning reference signal setting information to all the base stations participating in the positioning. [[ID=?]] [[ID=?]]

[0280] [[ID=?]] Step 902: Transmit the base station Tx Delay parameter information to the user equipment UE, and the UE corrects the positioning measurement value based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information.

[0281] It should be noted that the tags ,

[0280] , in the original text seem to be incomplete or have some issues in the provided content. I have translated them as they are but there might be some context or formatting problems related to those specific tags.Specifically, the location management function LMF transmits the base station Tx Delay parameter information to the user equipment UE, and the UE corrects the positioning measurement value based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information.

[0282] Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information.

[0283] The method for correcting the transmission channel delay according to the embodiment of the present disclosure is applicable to various UE-based positioning methods. By transferring the base station Tx Delay parameter information and the positioning reference signal setting information determined by the base station through the location management function, the influence of the transmission channel delay on the positioning measurement value related to time can be removed, and the positioning accuracy can be effectively improved.

[0284] Based on the content of the above embodiment, obtaining the base station Tx Delay parameter information and the positioning reference signal setting information described above includes: transmitting a TRP information request message to the base station and receiving a TRP information providing message transmitted from the base station, Here, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, the uplink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. Alternatively, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide downlink positioning reference signal setting information, the TRP information of the serving base station, and base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information and base station Tx Delay information of the adjacent base station.

[0285] Specifically, the base station and the Location Management Function (LMF) transmit base station Tx Delay parameter information and uplink / downlink positioning reference signal setting information based on the NRPPa message.

[0286] The base station includes a serving base station and at least one adjacent base station, and the uplink positioning reference signal setting information and / or downlink positioning reference signal setting information are determined by the serving base station.

[0287] Specifically, for the Location Management Function (LMF) to send a TRP information request message to the base station and receive a TRP information providing message sent from the base station, For the UE-based multi-round trip time positioning method, the location management function LMF transmits a TRP information request message to the serving base station. The TRP information request message is used to simultaneously request the serving base station to provide the downlink positioning reference signal setting information, uplink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. It receives a TRP information providing message transmitted from the serving base station. The TRP information providing message is used to provide the downlink positioning reference signal setting information, uplink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information to the location management function LMF. It transmits a TRP information request message to an adjacent base station. The TRP information request message is used to request the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. It receives a TRP information providing message transmitted from the adjacent base station. The TRP information providing message is used to provide the TRP information of the adjacent base station and the base station Tx Delay information to the location management function LMF, or For the UE-based downlink arrival time difference positioning method, the location management function LMF transmits a TRP information request message to the serving base station. The TRP information request message is used to simultaneously request the serving base station to provide the downlink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. It receives a TRP information providing message transmitted from the serving base station. The TRP information providing message is used to provide the downlink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information to the location management function LMF. It transmits a TRP information request message to an adjacent base station. The TRP information request message is used to request the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. It receives a TRP information providing message transmitted from the adjacent base station. The TRP information providing message is used to provide the TRP information of the adjacent base station and the base station Tx Delay information to the location management function LMF.

[0288] Based on the content of the above embodiment, transmitting a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; receiving a positioning capability provision message transmitted from the UE, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE; receiving a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data; transmitting a positioning assistance data provision message to the UE, where the positioning assistance data provision message is for providing the UE with positioning assistance data including the downlink positioning reference signal setting information; transmitting a positioning information request message to the UE, where the positioning information request message is for requesting the UE to measure the downlink positioning reference signal transmitted from the base station, and the UE further measures the downlink positioning reference signal transmitted from the base station using the positioning assistance data.

[0289] Specifically, the embodiment of the present disclosure is applicable to the UE-based downlink arrival time difference positioning method. Therefore, the method for correcting the transmission channel delay according to the embodiment of the present disclosure can correspondingly refer to the relevant descriptions and understandings in the embodiment of the method for correcting the transmission channel delay with the user terminal UE as the execution body in the above positioning method for UE-based, and the detailed description is omitted here.

[0290] The method for correcting the transmission channel delay according to the embodiment of the present disclosure can effectively improve the positioning accuracy by providing the UE with the base station Tx Delay parameter information.

[0291] Based on the content of the above embodiment, after the above-mentioned positioning information request message is transmitted to the UE, To send a measurement information request message to all base stations participating in positioning, where the measurement information request message includes uplink positioning reference signal setting information for requesting all base stations participating in the positioning to measure an uplink positioning reference signal transmitted from a UE and report the measured positioning measurement values. Further including receiving positioning measurement values transmitted from all base stations participating in positioning and transmitting the positioning measurement values transmitted from all base stations participating in the positioning to the UE.

[0292] Specifically, the embodiments of the present disclosure are applicable to UE-based multi-round trip time positioning methods.

[0293] The LMF sends a positioning capability request message to the UE, and the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability request message is a RequestCapabilities message.

[0294] The LMF receives a positioning capability provision message transmitted from the UE, and the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE. In some embodiments, the positioning capability provision message is a ProvideCapabilities message, and the positioning function supported by the UE is UE-based Multi-RTT positioning.

[0295] The LMF receives a positioning assistance data request message transmitted from the UE, and the positioning assistance data request message is for requesting the LMF to provide positioning assistance data. In some embodiments, the positioning assistance data request message is a RequestAssistanceData message, and the positioning assistance data is Multi-RTT positioning assistance data.

[0296] The LMF sends a positioning assistance data providing message to the UE, and the positioning assistance data providing message is for providing positioning assistance data including the downlink positioning reference signal setting information to the UE. In some embodiments, the positioning assistance data providing message is a ProvideAssistanceData message, and the positioning assistance data is Multi-RTT positioning assistance data.

[0297] The LMF sends a positioning information request message to the UE, and the positioning information request message is for requesting the UE to measure the downlink positioning reference signal transmitted from the base station. The UE measures the downlink positioning reference signal transmitted from the base station by using the positioning assistance data. In some embodiments, the positioning information request message is a RequestLocationInformation message, and the downlink positioning reference signal is a DL PRS.

[0298] The LMF sends a measurement information request message to all the base stations participating in the positioning. The measurement information request message includes the uplink positioning reference signal setting information for requesting all the base stations participating in the positioning to measure the uplink positioning reference signal transmitted from the UE and report the measured positioning measurement values. In some embodiments, the measurement information request message is a MEASUREMENT REQUEST message, and the uplink positioning reference signal is a UL SRS-Pos.

[0299] The LMF receives the positioning measurement values transmitted from all the base stations participating in the positioning, and sends the positioning measurement values transmitted from all the base stations participating in the positioning to the UE. All the base stations participating in the Multi-RTT positioning use the UL SRS-Pos setting data provided by the LMF to measure the SRS-Pos signal and obtain the positioning measurement values. The base station sends a measurement information providing message to the LMF, and the measurement information providing message includes the measured positioning measurement values. In some embodiments, the measurement information providing message is a MEASUREMENT REPORT message.

[0300] The method for correcting the transmission channel delay according to the embodiment of the present disclosure can effectively improve the positioning accuracy.

[0301] FIG. 10 is a sixth flowchart of the method for correcting the transmission channel delay according to the embodiment of the present disclosure, which is applied to a base station and includes the following steps 1000 and 1001.

[0302] Step 1000: Obtain the transmission channel delay base station Tx Delay parameter information corresponding to the base station.

[0303] Specifically, the base station determines the transmission channel delay base station Tx Delay parameter information corresponding to it.

[0304] Step 1001: Provide positioning reference signal setting information to the user equipment UE, and transmit the base station Tx Delay parameter information to the UE, so that the UE corrects the positioning measurement value based on the base station Tx Delay parameter information.

[0305] Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0306] The embodiment of the present disclosure further describes the method for correcting the transmission channel delay from the base station side for the UE-based positioning method, that is, still performing positioning calculation by the user equipment UE. Therefore, the method for correcting the transmission channel delay according to the embodiment of the present disclosure can correspondingly refer to the related descriptions and understandings in the embodiment of the method for correcting the transmission channel delay with the user equipment UE as the execution body in the aforementioned UE-based positioning method, and the detailed description is omitted here.

[0307] The method for correcting the transmission channel delay according to the embodiments of the present disclosure is applicable to various UE-based positioning methods, and can remove the influence of the transmission channel delay on the positioning measurement value related to time, and effectively improve the positioning accuracy.

[0308] Based on the content of the above embodiments, providing the positioning reference signal setting information to the user equipment UE includes generating downlink positioning reference signal setting information and transferring it to the UE by the Location Management Function (LMF), and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, or includes generating uplink positioning reference signal setting information and downlink positioning reference signal setting information, transmitting them to the LMF, and the LMF transmits the downlink positioning reference signal setting information to the UE and transmits the uplink positioning reference signal setting information to all base stations participating in the positioning. Here, the base station sets the uplink positioning reference signal setting information for the UE by RRC signaling, and the UE transmits the uplink positioning reference signal to the base station by RRC signaling based on the uplink positioning reference signal setting information.

[0309] The method for correcting the transmission channel delay according to the embodiments of the present disclosure can correspondingly refer to the related descriptions and understandings in the embodiments of the method for correcting the transmission channel delay with the user equipment UE as the execution body in the above-mentioned UE-based positioning method, and the detailed description is omitted here.

[0310] Based on the content of the above embodiments, the base station includes a serving base station and at least one neighboring base station, and transmitting the base station Tx Delay parameter information to the UE as described above includes that the serving base station directly transmits its own base station Tx Delay parameter information to the UE, or transfers its own base station Tx Delay parameter information by the LMF, and the neighboring base station transfers its own base station Tx Delay parameter information by the serving base station or the LMF.

[0311] Based on the content of the above embodiments, providing the positioning reference signal setting information to the user terminal UE and transmitting the base station Tx Delay parameter information to the UE is including receiving a TRP information request message sent from the LMF and sending a TRP information providing message to the LMF, where for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and its own base station Tx Delay information. For an adjacent base station, the TRP information request message requests the adjacent base station to provide its own TRP information and base station Tx Delay information, or for the serving base station, the TRP information request message simultaneously requests the serving base station to provide its own TRP information, downlink positioning reference signal setting information, and its own base station Tx Delay information. For an adjacent base station, the TRP information request message requests the adjacent base station to provide its own TRP information and base station Tx Delay information.

[0312] The method for correcting the transmission channel delay according to the embodiments of the present disclosure can correspondingly refer to the related descriptions and understandings in the embodiments of the method for correcting the transmission channel delay with the user terminal UE as the execution body in the UE-based positioning method described above. Here, detailed descriptions are omitted.

[0313] FIG. 11 is a schematic diagram of the structure of the location management function LMF according to an embodiment of the present disclosure, including a memory 1120, a transceiver 1100, and a processor 1110, where the transceiver 1100 is for transmitting and receiving data under the control of the processor 1110.

[0314] Here, in FIG. 11, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by processor 1110 and various circuits of the memory represented by memory 1120 are integrally linked. The bus architecture can also integrally link various other circuits such as peripheral devices, voltage regulators, and power management circuits. Since these are all well-known in the art, they will not be further described in the present disclosure. The bus interface provides an interface. The transceiver 1100 may be a plurality of elements, that is, it includes a transmitter and a receiver that provide units for communicating with various other devices in the transmission medium. These transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 1110 is used to manage the bus architecture and general processing, and the memory 1120 can store data used when the processor 1110 executes operations.

[0315] The processor 1110 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may use a multi-core architecture.

[0316] The processor 1110 reads the computer program in the memory and then performs the following operations, that is, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting the positioning reference signal setting information to the receiving node, correcting the positioning measurement value based on the Tx Delay parameter information, Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0317] The location management function LMF according to the embodiments of the present disclosure can implement all method steps realized by the above-described method for correcting the transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiments is omitted.

[0318] In one alternative embodiment, based on the content of the above embodiment, the transmitting node is a base station and / or a user equipment UE. Here, when the transmitting node is a base station, the Tx Delay parameter information is base station Tx Delay parameter information, the receiving node is a UE, and the positioning reference signal is a downlink positioning reference signal. when the transmitting node is a UE, the Tx Delay parameter information is UE Tx Delay parameter information, the receiving node is a base station, and the positioning reference signal is an uplink positioning reference signal. when the transmitting nodes are a base station and a UE respectively, the Tx Delay parameter information includes base station Tx Delay parameter information and UE Tx Delay parameter information, the receiving nodes are a UE and a base station respectively, and the positioning reference signals are a downlink positioning reference signal and an uplink positioning reference signal respectively.

[0319] In one alternative embodiment, based on the content of the above embodiment, when the transmitting node is a base station, receiving the transmitted channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting the positioning reference signal setting information to the receiving node means transmitting a TRP information request message for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information to the base station. Receiving the TRP information, the downlink positioning reference signal setting information, and the base station Tx Delay parameter information; Transmitting a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures a downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a first positioning measurement value; Correcting the positioning measurement value based on the Tx Delay parameter information described above includes correcting the first positioning measurement value based on the base station Tx Delay parameter information.

[0320] In one alternative embodiment, based on the content of the above embodiment, before transmitting a TRP information request message to the base station, transmitting a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE; further includes receiving a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0321] In one alternative embodiment, based on the content of the above embodiment, when the transmitting node is a user terminal UE, receiving the transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting the positioning reference signal setting information to the receiving node receiving the UE Tx Delay parameter information obtained by the UE; Transmitting a TRP information request message to a base station, where the TRP information request message is for requesting the base station to provide its own TRP information and uplink positioning reference signal setting information, Receiving the TRP information and the uplink positioning reference signal setting information, Transmitting a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a second positioning measurement value, The correcting the positioning measurement value based on the Tx Delay parameter information described above is, Including correcting the second positioning measurement value based on the UE Tx Delay parameter information.

[0322] In one alternative embodiment, based on the content of the above embodiment, before receiving the UE Tx Delay parameter information obtained by the UE described above, Transmitting a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information, Receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information, Further including transmitting a UE Tx Delay request message to the UE, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information.

[0323] In one alternative embodiment, based on the content of the above embodiments, when the transmitting nodes are a base station and a UE respectively, the above-mentioned receiving of the transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting positioning reference signal setting information to the receiving node is receiving the UE Tx Delay parameter information obtained by the UE, transmitting a TRP information request message to the base station, where the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information, receiving the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information, transmitting a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value, transmitting a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a fourth positioning measurement value, The above-mentioned correcting the positioning measurement value based on the Tx Delay parameter information is correcting the third positioning measurement value based on the base station Tx Delay parameter information, including correcting the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0324] In one alternative embodiment, based on the content of the above embodiments, To send a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information To receive a positioning capability provision message sent from the UE, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information To send a UE Tx Delay request message to the UE, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information To further include receiving a positioning assistance data request message sent from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE

[0325] In one alternative embodiment, based on the content of the above embodiment, the base station includes a serving base station and at least one adjacent base station, and the positioning reference signal setting information is determined by the serving base station

[0326] In one alternative embodiment, based on the content of the above embodiment, the transmission channel delay Tx Delay parameter information includes the absolute group delay information of the transmission channel, the relative group delay information of the transmission channel, and a quality indicator of the transmission channel group delay information, where The absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, representing the absolute delay of the carrier frequency band or the carrier frequency The relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency The quality indicator of the transmission channel group delay information includes error parameters.

[0327] The location management function LMF according to each of the above embodiments of the present disclosure can implement all method steps realized by the above-described correction method of the transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiments is omitted.

[0328] FIG. 12 is a schematic diagram of the structure of a user terminal UE according to an embodiment of the present disclosure, including a memory 1220, a transceiver 1200, and a processor 1210. The transceiver 1200 is for transmitting and receiving data under the control of the processor 1210.

[0329] Here, in FIG. 12, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1210 and various circuits of the memory represented by the memory 1220 are integrally linked. The bus architecture can also integrally link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art, so they are not further described in the present disclosure. The bus interface provides an interface. The transceiver 1200 may be a plurality of elements, that is, it includes a transmitter and a receiver that provide a unit for communicating with various other devices in the transmission medium. These transmission media include transmission media such as wireless channels, wired channels, and optical cables. Depending on different user devices, the user interface 1230 may be an interface capable of externally / internally connecting necessary devices, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, etc.

[0330] Processor 1210 is used to manage bus architecture and general processing, and memory 1220 can store data used when processor 1210 executes operations.

[0331] Optionally, processor 1210 may be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor may use a multi-core architecture.

[0332] Processor 1210 reads the computer program in the memory 1220 to perform the following operations, namely, receiving the transmission channel delay UE Tx Delay parameter information corresponding to the UE, transmitting the UE Tx Delay parameter information to the Location Management Function LMF, and the LMF corrects the positioning measurement value based on the UE Tx Delay parameter information. Here, the positioning measurement value is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information, and / or the UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information.

[0333] In one alternative embodiment, based on the content of the above embodiment, transmitting the UE Tx Delay parameter information to the Location Management Function LMF is Receiving the positioning capability request message sent from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information. Sending a positioning capability provision message to the LMF, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information. Receiving the UE Tx Delay request message sent from the LMF, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information. Including sending a UE Tx Delay provision message including the UE Tx Delay parameter information to the LMF.

[0334] In one alternative embodiment, based on the content of the above embodiment, after sending the UE Tx Delay provision message to the LMF as described above, Receiving the uplink positioning reference signal setting information sent by the base station through RRC signaling, sending an uplink positioning reference signal to the base station, the base station measuring the uplink positioning reference signal, and sending the obtained positioning measurement value to the LMF, and the LMF correcting the positioning measurement value based on the UE Tx Delay parameter information.

[0335] In one alternative embodiment, based on the content of the above embodiment, after sending the UE Tx Delay provision message to the LMF as described above, Sending the UE Tx Delay parameter information to the Location Management Function LMF. Sending a positioning assistance data request message for requesting the LMF to provide positioning assistance data to the LMF. Receiving a positioning assistance data providing message including downlink positioning reference signal setting information transmitted from the LMF; Measuring a downlink positioning reference signal transmitted from a base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value, and transmitting the third positioning measurement value to the LMF, where the LMF corrects the third positioning measurement value based on base station Tx Delay parameter information; Receiving uplink positioning reference signal setting information transmitted by the base station through RRC signaling, transmitting an uplink positioning reference signal to the base station, where the base station measures the uplink positioning reference signal to obtain a fourth positioning measurement value, and transmitting the fourth positioning measurement value to the LMF, where the LMF corrects the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0336] Note that the user equipment UE according to each of the above embodiments of the present disclosure can implement all method steps realized by the above-described correction method for transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiments is omitted.

[0337] FIG. 13 is one of the schematic diagrams of the structure of a base station according to an embodiment of the present disclosure, including a memory 1320, a transceiver 1300, and a processor 1310. Here, The transceiver 1300 is for transmitting and receiving data under the control of the processor 1310.

[0338] Here, in FIG. 13, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by processor 1310 and various circuits of the memory represented by memory 1320 are integrally linked. The bus architecture can also integrally link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc. Since these are all well-known in the art, they will not be further described in this disclosure. The bus interface provides an interface. The transceiver 1300 may be a plurality of elements, that is, it includes a transmitter and a receiver that provide units for communicating with various other devices in the transmission medium. These transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 1310 is used to manage the bus architecture and general processing, and the memory 1320 can store data used when the processor 1310 executes operations.

[0339] The processor 1310 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may use a multi-core architecture.

[0340] The processor 1310 reads the computer program in the memory and then performs the following operations, that is, acquiring the transmission channel delay base station Tx Delay parameter information corresponding to the base station, transmitting the base station Tx Delay parameter information to the location management function LMF, and the LMF corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0341] Based on the content of the above embodiment, transmitting the base station Tx Delay parameter information to the position management function LMF as described above includes receiving the TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF. Here, the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, and the TRP information providing message includes the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, or the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information, and the TRP information providing message includes the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information.

[0342] Based on the content of the above embodiment, the base station includes a serving base station and at least one adjacent base station, and the uplink positioning reference signal setting information and / or the downlink positioning reference signal setting information is determined by the serving base station.

[0343] Note that the base station according to each of the above embodiments of the present disclosure can implement all the method steps realized by the above-described method for correcting the transmission channel delay, and can achieve the same technical effect. Here, the description of the same parts and beneficial effects as those of the method embodiment is omitted.

[0344] Embodiments of the present disclosure further provide a user equipment UE, which includes a memory, a transceiver, and a processor, The memory is for storing a computer program, the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory and performs the following operations, that is, receiving the transmission channel delay UE Tx Delay parameter information corresponding to the UE, receiving the base station Tx Delay parameter information transmitted from a base station or a location management function LMF, and correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information.

[0345] In one alternative embodiment, the receiving the base station Tx Delay parameter information transmitted from the base station or the location management function LMF as described above includes receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of an adjacent base station transferred by the serving base station, or receiving the base station Tx Delay parameter information of the serving base station itself and the base station Tx Delay parameter information of an adjacent base station transferred by the LMF, or receiving the base station Tx Delay parameter information of the serving base station and the adjacent base station transferred by the LMF.

[0346] In one alternative embodiment, when the transmitting node is a base station, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information as described above, Receiving a positioning capability request message transmitted from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; Transmitting a positioning capability provision message to the LMF, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE; Transmitting a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data; Receiving a positioning assistance data provision message transmitted from the LMF, where the positioning assistance data provision message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information; Receiving a positioning information request message transmitted from the LMF, where the positioning information request message is for requesting the UE to measure the downlink positioning reference signal transmitted from the base station; Further including measuring the downlink positioning reference signal transmitted from the base station using the downlink positioning reference signal setting information to obtain a fifth positioning measurement value; Specifically, correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information as described above; Is correcting the fifth positioning measurement value based on the base station Tx Delay parameter information.

[0347] In one alternative embodiment, when the transmitting nodes are the base station and the UE, before correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, Receiving a positioning capability request message transmitted from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE; Sending a positioning capability providing message to the LMF, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE. Sending a positioning assistance data request message to the LMF for requesting the LMF to provide positioning assistance data. Receiving a positioning assistance data providing message sent from the LMF, where the positioning assistance data providing message is for providing positioning assistance data including downlink positioning reference signal setting information to the UE. Receiving a positioning information request message sent from the LMF, where the positioning information request message is for requesting the UE to measure the downlink positioning reference signal sent from the base station. Measuring the downlink positioning reference signal sent from the base station using the positioning assistance data to obtain a sixth positioning measurement value. Receiving uplink positioning reference signal setting information sent by the serving base station through RRC signaling. Based on the RRC signaling, transmitting an uplink positioning reference signal to all base stations participating in the positioning, and all base stations participating in the positioning measure the uplink positioning reference signal based on the uplink positioning reference signal setting information sent from the LMF to obtain a seventh positioning measurement value, and the LMF transmits the seventh positioning measurement value to the UE. Here, all base stations participating in the positioning include the serving base station and at least one neighboring base station. Correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information described above specifically includes: Correcting the sixth positioning measurement value based on the base station Tx Delay parameter information, and Correcting the seventh positioning measurement value based on the UE Tx Delay parameter information.

[0348] In one alternative embodiment, the UE Tx Delay parameter information or the base station Tx Delay parameter information includes the absolute group delay information of the transmission channel, the relative group delay information of the transmission channel, and the quality indicator of the transmission channel group delay information, where the absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency, the relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency, the quality indicator of the transmission channel group delay information includes error parameters.

[0349] It should be noted that the user terminal UE according to each of the above embodiments of the present disclosure can implement all method steps realized by the above-described correction method for transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiments is omitted.

[0350] The embodiments of the present disclosure further provide a location management function LMF, and the location management function LMF includes a memory, a transceiver, and a processor. The memory is for storing a computer program, the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory and performs the following operations, that is, obtaining base station Tx Delay parameter information and positioning reference signal setting information, transmitting the positioning reference signal setting information to a receiving node, transmitting the base station Tx Delay parameter information to a user terminal UE, and the UE corrects positioning measurement values based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information. Here, when the transmitting node is a base station, the receiving node is a UE, and when the transmitting nodes are a UE and a base station respectively, the receiving nodes correspond to the base station and the UE respectively.

[0351] In one alternative embodiment, obtaining the base station Tx Delay parameter information and the positioning reference signal setting information described above includes transmitting a TRP information request message to the base station and receiving a TRP information providing message transmitted from the base station. Here, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, the uplink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information. Or, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide the downlink positioning reference signal setting information, the TRP information of the serving base station, and the base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information of the adjacent base station and the base station Tx Delay information.

[0352] In one alternative embodiment, it is to transmit a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. it is to receive a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE. Receiving a positioning assistance data request message transmitted from a UE, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data; Transmitting a positioning assistance data providing message to the UE, wherein the positioning assistance data providing message is for providing the UE with positioning assistance data including the downlink positioning reference signal setting information; Transmitting a positioning information request message to the UE, wherein the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station, and the UE further measures the downlink positioning reference signal transmitted from the base station by using the positioning assistance data.

[0353] In one alternative embodiment, after transmitting the positioning information request message to the UE as described above, Transmitting a measurement information request message to all base stations participating in positioning, wherein the measurement information request message includes the uplink positioning reference signal setting information for requesting all base stations participating in the positioning to measure an uplink positioning reference signal transmitted from the UE and report the measured positioning measurement values; Further including receiving positioning measurement values transmitted from all base stations participating in positioning and transmitting the positioning measurement values transmitted from all base stations participating in the positioning to the UE.

[0354] It should be noted that the position management function LMF according to each of the above embodiments of the present disclosure can implement all method steps realized by the above-described correction method for the transmission channel delay, and can achieve the same technical effect. Here, the description of the same parts and beneficial effects as those of the method embodiments is omitted.

[0355] Embodiments of the present disclosure further provide a base station, which includes a memory, a transceiver, and a processor. The memory is for storing computer programs, the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory and performs the following operations, namely, acquiring the transmission channel delay base station Tx Delay parameter information corresponding to the base station, providing positioning reference signal setting information to the user equipment UE, transmitting the base station Tx Delay parameter information to the UE, and enabling the UE to correct positioning measurement values based on the base station Tx Delay parameter information, wherein the positioning measurement values are obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or are obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0356] In one alternative embodiment, the above-mentioned providing positioning reference signal setting information to the user equipment UE includes generating downlink positioning reference signal setting information, transferring it to the UE by the location management function LMF, and enabling the UE to measure the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, or generating uplink positioning reference signal setting information and downlink positioning reference signal setting information, transmitting them to the location management function LMF, and the LMF transmitting the downlink positioning reference signal setting information to the UE and transmitting the uplink positioning reference signal setting information to all base stations participating in positioning, wherein the base station sets the uplink positioning reference signal setting information for the UE by RRC signaling, and the UE transmits the uplink positioning reference signal to the base station by RRC signaling based on the uplink positioning reference signal setting information.

[0357] In one alternative embodiment, the base station includes a serving base station and at least one neighboring base station, and the above-mentioned transmitting the base station Tx Delay parameter information to the UE includes The serving base station directly transmits its own base station Tx Delay parameter information to the UE, or transfers its own base station Tx Delay parameter information through the LMF. The neighboring base station transfers its own base station Tx Delay parameter information through the serving base station or the LMF.

[0358] In one alternative embodiment, providing the positioning reference signal setting information to the user terminal UE and transmitting the base station Tx Delay parameter information to the UE includes receiving a TRP information request message transmitted from the LMF and transmitting a TRP information providing message to the LMF, where for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and its own base station Tx Delay information. For the neighboring base station, the TRP information request message requests the neighboring base station to provide its own TRP information and base station Tx Delay information, or for the serving base station, the TRP information request message simultaneously requests the serving base station to provide its own TRP information, downlink positioning reference signal setting information, and its own base station Tx Delay information. For the neighboring base station, the TRP information request message requests the neighboring base station to provide its own TRP information and base station Tx Delay information.

[0359] It should be noted that the base station according to each of the above embodiments of the present disclosure can implement all method steps realized by the above-described correction method for the transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiments is omitted.

[0360] FIG. 14 is a second schematic diagram of the structure of the location management function LMF according to an embodiment of the present disclosure, including a first transmission unit 1410 and a first correction unit 1420, where The first transmission unit 1410 is for receiving the transmission channel delay Tx Delay parameter information transmitted from the transmission node and transmitting positioning reference signal setting information to the receiving node. The first correction unit 1420 is for correcting the positioning measurement value based on the Tx Delay parameter information. Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmission node based on the positioning reference signal setting information.

[0361] Optionally, the transmission node is a base station and / or a user equipment UE. Here, when the transmission node is a base station, the Tx Delay parameter information is the base station Tx Delay parameter information, the receiving node is a UE, and the positioning reference signal is a downlink positioning reference signal. when the transmission node is a UE, the Tx Delay parameter information is the UE Tx Delay parameter information, the receiving node is a base station, and the positioning reference signal is an uplink positioning reference signal. when the transmission nodes are a base station and a UE respectively, the Tx Delay parameter information includes the base station Tx Delay parameter information and the UE Tx Delay parameter information, the receiving nodes are a UE and a base station respectively, and the positioning reference signals are a downlink positioning reference signal and an uplink positioning reference signal respectively.

[0362] Optionally, when the transmission node is a base station, the first transmission unit transmits a TRP information request message to the base station for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information. receives the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information. Send a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE is used to measure the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a first positioning measurement value. The first correction unit is used to correct the first positioning measurement value based on the base station Tx Delay parameter information.

[0363] Optionally, a first positioning capability request unit for sending a positioning capability request message to the UE, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. a first positioning capability receiving unit for receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE. a first positioning assistance request receiving unit for receiving a positioning assistance data request message transmitted from the UE, where the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0364] Optionally, when the transmitting node is a user terminal UE, the first transmission unit receives the UE Tx Delay parameter information obtained by the UE. sends a TRP information request message to the base station, where the TRP information request message is for requesting the base station to provide its own TRP information and uplink positioning reference signal setting information. receives the TRP information and uplink positioning reference signal setting information. Send a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station is used to measure the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information and obtain a second positioning measurement value. The first correction unit is used to correct the second positioning measurement value based on the UE Tx Delay parameter information.

[0365] Optionally, A second positioning capability request unit for sending a positioning capability request message to the UE, where the positioning capability request message is used to request the UE to notify the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information. A second positioning capability receiving unit for receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is used to notify the LMF of the positioning functions supported by the UE and whether it has the ability to provide UE Tx Delay parameter information. A first transmission delay request unit for sending a UE Tx Delay request message to the UE, where the UE Tx Delay request message is used to request the UE to provide UE Tx Delay parameter information.

[0366] Optionally, when the transmitting nodes are a base station and a UE respectively, the first transmission unit receives the UE Tx Delay parameter information obtained by the UE, and sends a TRP information request message to the base station, where the TRP information request message is used to request the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. Receiving the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information; Sending a positioning assistance data providing message including the downlink positioning reference signal setting information to the UE, and the UE measures a downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information to obtain a third positioning measurement value; Used for sending a measurement information request message including the uplink positioning reference signal setting information to the base station, and the base station measures an uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information to obtain a fourth positioning measurement value; The first correction unit: Based on the base station Tx Delay parameter information, correcting the third positioning measurement value; Based on the UE Tx Delay parameter information, used for correcting the fourth positioning measurement value.

[0367] Optionally, A third positioning capability request unit for sending a positioning capability request message to the UE, where the positioning capability request message is used to request the UE to notify the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information; A third positioning capability receiving unit for receiving a positioning capability providing message transmitted from the UE, where the positioning capability providing message is used to notify the LMF of the positioning function supported by the UE and whether it has the ability to provide UE Tx Delay parameter information; A second transmission delay request unit for sending a UE Tx Delay request message to the UE, where the UE Tx Delay request message is used to request the UE to provide UE Tx Delay parameter information; A second positioning assistance request receiving unit for receiving a positioning assistance data request message transmitted from the UE, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data to the UE.

[0368] Optionally, the base station includes a serving base station and at least one neighboring base station, and the positioning reference signal setting information is determined by the serving base station.

[0369] Optionally, the transmission channel delay Tx Delay parameter information includes absolute group delay information of the transmission channel, relative group delay information of the transmission channel, and a quality indicator of the transmission channel group delay information, where the absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, representing the absolute delay of the carrier frequency band or the carrier frequency, the relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in a bandwidth covered by a band or a carrier frequency, the quality indicator of the transmission channel group delay information includes an error parameter.

[0370] It should be noted that the location management function LMF according to the embodiments of the present disclosure can implement all method steps realized by the above-described correction method for the transmission channel delay, and can achieve the same technical effect. Here, the description of the same parts and beneficial effects as those in the method embodiments is omitted.

[0371] FIG. 15 is a second schematic diagram of the structure of a user terminal UE according to an embodiment of the present disclosure, including a first acquisition unit 1510 and a first transmission unit 1520, where the first acquisition unit 1510 is for receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE. The first transmission unit 1520 is for transmitting the UE Tx Delay parameter information to the Location Management Function (LMF) so that the LMF corrects positioning measurement values based on the UE Tx Delay parameter information. Here, the positioning measurement values are those obtained by a base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal setting information, and / or those obtained by the UE measuring a downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal setting information.

[0372] Optionally, the first transmission unit receives a positioning capability request message transmitted from the LMF, where the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information. transmits a positioning capability provision message to the LMF, where the positioning capability provision message is for notifying the LMF of the positioning functions supported by the UE and whether the UE has the ability to provide UE Tx Delay parameter information. receives a UE Tx Delay request message transmitted from the LMF, where the UE Tx Delay request message is for requesting the UE to provide UE Tx Delay parameter information. is used to transmit a UE Tx Delay provision message including the UE Tx Delay parameter information to the LMF.

[0373] Optionally, a first uplink positioning reference signal setting information receiving unit for receiving uplink positioning reference signal setting information transmitted by a base station through RRC signaling Send an uplink positioning reference signal to the base station, where the base station measures the uplink positioning reference signal and transmits the obtained positioning measurement value to the LMF. The LMF further includes a first uplink positioning reference signal transmission unit for correcting the positioning measurement value based on the UE Tx Delay parameter information.

[0374] Optionally, a positioning assistance data request transmission unit for sending a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data, and a positioning assistance data reception unit for receiving a positioning assistance data providing message including downlink positioning reference signal setting information sent from the LMF, and based on the downlink positioning reference signal setting information, measure the downlink positioning reference signal transmitted from the base station to obtain a third positioning measurement value, and transmit the third positioning measurement value to the LMF. The LMF includes a first measurement and correction unit for correcting the third positioning measurement value based on the base station Tx Delay parameter information, and receive the uplink positioning reference signal setting information sent by the base station through RRC signaling, send an uplink positioning reference signal to the base station, where the base station measures the uplink positioning reference signal to obtain a fourth positioning measurement value, and transmit the fourth positioning measurement value to the LMF. The LMF further includes a second uplink positioning reference signal transmission unit for correcting the fourth positioning measurement value based on the UE Tx Delay parameter information.

[0375] It should be noted that the user terminal UE according to the embodiment of the present disclosure can implement all method steps realized by the above-described method for correcting the transmission channel delay, and can achieve the same technical effect. Here, the description of the same parts and beneficial effects as those of the method embodiment is omitted.

[0376] FIG. 16 is a second schematic diagram of the structure of a base station according to an embodiment of the present disclosure, including a second acquisition unit 1610 and a second transmission unit 1620. Here, The second acquisition unit 1610 is for acquiring the transmission channel delay base station Tx Delay parameter information corresponding to the base station. The second transmission unit 1620 is for transmitting the base station Tx Delay parameter information to the location management function LMF so that the LMF corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment UE measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0377] Optionally, the second transmission unit is used to receive the TRP information request message transmitted from the LMF and transmit the TRP information providing message to the LMF. Here, the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information. The TRP information providing message includes the TRP information, downlink positioning reference signal setting information, and base station Tx Delay parameter information, or the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information. The TRP information providing message includes the TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and base station Tx Delay parameter information.

[0378] Optionally, the base station includes a serving base station and at least one adjacent base station, and the uplink positioning reference signal setting information and / or the downlink positioning reference signal setting information is determined by the serving base station.

[0379] It should be noted that the base station according to the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned transmission channel delay correction method and can achieve the same technical effects, and therefore, the description of the same parts and beneficial effects as those of the method embodiments will be omitted here.

[0380] FIG. 17 is a third schematic diagram of the structure of a user equipment UE according to an embodiment of the present disclosure, which includes a third acquiring unit 1710, a receiving unit 1720 and a second correcting unit 1730, where: The third obtaining unit 1710 is for receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE; The receiving unit 1720 is for receiving base station Tx Delay parameter information sent from the base station or location management function LMF; The second correcting unit 1730 is for correcting the positioning measurement value according to the UE Tx Delay parameter information and / or the base station Tx Delay parameter information; Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal configuration information.

[0381] Optionally, the receiving unit: Receiving base station Tx delay parameter information of the serving base station itself and base station Tx delay parameter information of neighboring base stations transmitted by the serving base station; or Receiving base station Tx Delay parameter information of the serving base station itself and base station Tx Delay parameter information of neighboring base stations transferred by the LMF; or It is used to receive base station Tx Delay parameter information of the serving base station and neighboring base stations transmitted by the LMF.

[0382] Optionally, when the transmitting node is a base station, A first positioning capability request receiving unit for receiving a positioning capability request message transmitted from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of positioning functions supported by the UE. A first positioning capability transmitting unit for transmitting a positioning capability providing message to the LMF, wherein the positioning capability providing message is for notifying the LMF of positioning functions supported by the UE. A first positioning assistance data request transmitting unit for transmitting a positioning assistance data request message to the LMF, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data. A first positioning assistance data receiving unit for receiving a positioning assistance data providing message transmitted from the LMF, wherein the positioning assistance data providing message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information. A first positioning information request receiving unit for receiving a positioning information request message transmitted from the LMF, wherein the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station. It further includes a first measurement unit for measuring a downlink positioning reference signal transmitted from a base station using the downlink positioning reference signal setting information to obtain a fifth positioning measurement value. The second correction unit is used to correct the fifth positioning measurement value based on the base station Tx Delay parameter information.

[0383] Optionally, when the transmitting nodes are a base station and a UE A second positioning capability request receiving unit for receiving a positioning capability request message transmitted from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of positioning functions supported by the UE. A second positioning capability transmitting unit for transmitting a positioning capability providing message to the LMF, wherein the positioning capability providing message is for notifying the LMF of positioning functions supported by the UE. A second positioning assistance data request transmitting unit for transmitting a positioning assistance data request message to the LMF, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data. A second positioning assistance data receiving unit for receiving a positioning assistance data providing message transmitted from the LMF, wherein the positioning assistance data providing message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information. A second positioning information request receiving unit for receiving a positioning information request message transmitted from the LMF, wherein the positioning information request message is for requesting the UE to measure a downlink positioning reference signal transmitted from a base station. A second measurement unit for measuring a downlink positioning reference signal transmitted from a base station using the positioning assistance data to obtain a sixth positioning measurement value. A second uplink positioning reference signal setting information receiving unit for receiving uplink positioning reference signal setting information transmitted by a serving base station through RRC signaling. Further including a second uplink positioning reference signal transmitting unit for transmitting an uplink positioning reference signal to all base stations participating in positioning based on RRC signaling, so that all base stations participating in the positioning measure the uplink positioning reference signal based on the uplink positioning reference signal setting information transmitted from the LMF to obtain a seventh positioning measurement value, and the LMF transmits the seventh positioning measurement value to the UE. Here, all base stations participating in positioning include the serving base station and at least one neighboring base station, The second correction unit is used to correct the sixth positioning measurement value based on the base station Tx Delay parameter information, and used to correct the seventh positioning measurement value based on the UE Tx Delay parameter information.

[0384] Optionally, the UE Tx Delay parameter information or the base station Tx Delay parameter information includes the absolute group delay information of the transmission channel, the relative group delay information of the transmission channel, and the quality indicator of the transmission channel group delay information. Here, the absolute group delay information of the transmission channel is a parameter related to each carrier frequency band or a carrier frequency having a certain carrier bandwidth, and represents the absolute delay of the carrier frequency band or the carrier frequency, the relative group delay information of the transmission channel is a set of parameters related to sub-carrier frequencies in the bandwidth covered by the band or the carrier frequency, the quality indicator of the transmission channel group delay information includes an error parameter.

[0385] It should be noted that the user terminal UE according to the embodiment of the present disclosure can implement all method steps realized by the above-described transmission channel delay correction method, and can achieve the same technical effect. Here, the description of the same part and the beneficial effect in the method embodiment is omitted.

[0386] FIG. 18 is a schematic diagram III of the structure of the location management function LMF according to the embodiment of the present disclosure, including a fourth acquisition unit 1810, a third transmission unit 1820, and a fourth transmission unit 1830. Here, the fourth acquisition unit 1810 is for acquiring base station Tx Delay parameter information and positioning reference signal setting information, The third transmission unit 1820 is for transmitting the positioning reference signal setting information to the receiving node. The fourth transmission unit 1830 transmits the base station Tx Delay parameter information to the user equipment UE so that the UE corrects the positioning measurement value based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information. Here, when the transmitting node is a base station, the receiving node is a UE, and when the transmitting nodes are a UE and a base station respectively, the receiving nodes correspond to the base station and the UE respectively.

[0387] Optionally, the fourth acquisition unit is used to transmit a TRP information request message to the base station and receive a TRP information providing message transmitted from the base station. Here, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide downlink positioning reference signal setting information, uplink positioning reference signal setting information, the TRP information of the serving base station, and base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information and base station Tx Delay information of the adjacent base station. Or, for the serving base station, the TRP information request message is for simultaneously requesting the serving base station to provide downlink positioning reference signal setting information, the TRP information of the serving base station, and base station Tx Delay information. For an adjacent base station, the TRP information request message is for requesting the adjacent base station to provide the TRP information and base station Tx Delay information of the adjacent base station.

[0388] Optionally, A fourth positioning capability request unit for sending a positioning capability request message to the UE, wherein the positioning capability request message is for requesting the UE to notify the LMF of the positioning functions supported by the UE. A fourth positioning capability receiving unit for receiving a positioning capability providing message sent from the UE, wherein the positioning capability providing message is for notifying the LMF of the positioning functions supported by the UE. A third positioning assistance request receiving unit for receiving a positioning assistance data request message sent from the UE, wherein the positioning assistance data request message is for requesting the LMF to provide positioning assistance data. A positioning assistance data providing unit for sending a positioning assistance data providing message to the UE, wherein the positioning assistance data providing message is for providing the UE with positioning assistance data including downlink positioning reference signal setting information. A first positioning request sending unit for sending a positioning information request message to the UE, wherein the positioning information request message is for requesting the UE to measure the downlink positioning reference signal sent from the base station, and the UE measures the downlink positioning reference signal sent from the base station using the positioning assistance data.

[0389] Optionally, A second positioning request sending unit for sending a measurement information request message to all base stations participating in positioning, wherein the measurement information request message includes uplink positioning reference signal setting information for requesting all base stations participating in positioning to measure the uplink positioning reference signal sent from the UE and report the measured positioning measurement values. Further includes a positioning measurement value receiving unit for receiving the positioning measurement values sent from all base stations participating in positioning and sending the positioning measurement values sent from all base stations participating in positioning to the UE.

[0390] Note that the Location Management Function (LMF) according to the embodiment of the present disclosure can implement all the method steps realized by the above-described method for correcting the transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiment is omitted.

[0391] FIG. 19 is a third schematic diagram of the structure of a base station according to an embodiment of the present disclosure, including a fifth acquisition unit 1910 and a second transmission unit 1920. Here, The fifth acquisition unit 1910 is for acquiring the transmission channel delay base station Tx Delay parameter information corresponding to the base station. The second transmission unit 1920 is for providing positioning reference signal setting information to a user equipment (UE), transmitting the base station Tx Delay parameter information to the UE, so that the UE corrects positioning measurement values based on the base station Tx Delay parameter information. Here, the positioning measurement values are those obtained by the UE measuring a downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal setting information, and / or those obtained by the base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal setting information.

[0392] Optionally, the second transmission unit generates downlink positioning reference signal setting information, transfers it to the UE through the Location Management Function (LMF), and the UE measures the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, or generates uplink positioning reference signal setting information and downlink positioning reference signal setting information, transmits them to the LMF, and the LMF is used to transmit the downlink positioning reference signal setting information to the UE and transmit the uplink positioning reference signal setting information to all base stations participating in positioning. Here, the base station sets uplink positioning reference signal setting information for the UE through RRC signaling, and the UE transmits an uplink positioning reference signal to the base station through RRC signaling based on the uplink positioning reference signal setting information.

[0393] Optionally, the base station includes a serving base station and at least one neighboring base station, and the transmission of the base station Tx Delay parameter information to the UE is The serving base station directly transmits its own base station Tx Delay parameter information to the UE, or transfers its own base station Tx Delay parameter information through the LMF. The neighboring base station transfers its own base station Tx Delay parameter information through the serving base station or the LMF.

[0394] Optionally, the second transmission unit is used to receive a TRP information request message sent from the LMF and transmit a TRP information providing message to the LMF. Here, For the serving base station, the TRP information request message is used to simultaneously request the serving base station to provide its own TRP information, downlink positioning reference signal setting information, uplink positioning reference signal setting information, and its own base station Tx Delay information. For the neighboring base station, the TRP information request message requests the neighboring base station to provide its own TRP information and base station Tx Delay information, or For the serving base station, the TRP information request message is used to simultaneously request the serving base station to provide its own TRP information, downlink positioning reference signal setting information, and its own base station Tx Delay information. For the neighboring base station, the TRP information request message requests the neighboring base station to provide its own TRP information and base station Tx Delay information.

[0395] Note that the base station according to the embodiment of the present disclosure can implement all method steps realized by the above-described method for correcting transmission channel delay, and can achieve the same technical effects. Here, the description of the same parts and beneficial effects as those of the method embodiment is omitted.

[0396] However, in the embodiment of the present disclosure, the division of units is exemplary and is only a logical function division, and there may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may physically exist alone, or two or more units may be integrated into one unit. The above integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0397] When the above integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on such an understanding, the technical solution of the present disclosure may be embodied in the form of a software product in its essence, or in the part contributing to the prior art, or in the whole or part of the technical solution. The computer software product is stored in a storage medium and includes some instructions for causing a computer device (for example, a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method in each embodiment of the present disclosure. The storage medium includes various media capable of storing program codes, such as a USB disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0398] In another aspect, embodiments of the present disclosure further provide a processor-readable storage medium storing a computer program, the computer program being for causing the processor to execute the method for correcting the transmission channel delay according to each of the above embodiments, and the method for correcting the transmission channel delay includes receiving transmission channel delay Tx Delay parameter information transmitted from a transmitting node and transmitting positioning reference signal setting information to a receiving node; correcting a positioning measurement value based on the Tx Delay parameter information, wherein the positioning measurement value is obtained by the receiving node measuring a positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0399] Alternatively, the computer program is for causing the processor to execute the method for correcting the transmission channel delay according to each of the above embodiments, and the method for correcting the transmission channel delay includes receiving transmission channel delay UE Tx Delay parameter information corresponding to the UE; transmitting the UE Tx Delay parameter information to a location management function LMF, and the LMF corrects a positioning measurement value based on the UE Tx Delay parameter information, wherein the positioning measurement value is obtained by a base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal setting information and / or obtained by the UE measuring a downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal setting information.

[0400] Alternatively, the computer program is for causing the processor to execute the method for correcting the transmission channel delay according to each of the above embodiments, and the method for correcting the transmission channel delay includes acquiring transmission channel delay base station Tx Delay parameter information corresponding to the base station; Transmitting the base station Tx Delay parameter information to the Location Management Function (LMF), and the LMF corrects the positioning measurement value based on the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the user equipment (UE) measuring the downlink positioning reference signal transmitted from the base station based on the downlink positioning reference signal setting information, and / or is obtained by the base station measuring the uplink positioning reference signal transmitted from the UE based on the uplink positioning reference signal setting information.

[0401] Alternatively, the computer program is for causing the processor to execute the method for correcting the transmission channel delay according to each of the above embodiments. The method for correcting the transmission channel delay includes: Receiving the transmission channel delay UE Tx Delay parameter information corresponding to the UE; Receiving the base station Tx Delay parameter information transmitted from the base station or the Location Management Function (LMF); Correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal setting information.

[0402] Alternatively, the computer program is for causing the processor to execute the method for correcting the transmission channel delay according to each of the above embodiments. The method for correcting the transmission channel delay includes: Obtaining the base station Tx Delay parameter information and the positioning reference signal setting information; Transmitting the positioning reference signal setting information to the receiving node; Transmitting the base station Tx Delay parameter information to the user equipment (UE), and the UE corrects the positioning measurement value based on its own UE Tx Delay parameter information and / or the base station Tx Delay parameter information. Here, the positioning measurement value is obtained by a receiving node measuring a positioning reference signal transmitted from a transmitting node based on the positioning reference signal setting information. Here, when the transmitting node is a base station, the receiving node is a UE, and when the transmitting nodes are a UE and a base station respectively, the receiving nodes correspond to the base station and the UE respectively.

[0403] Alternatively, the computer program is for causing the processor to execute the method for correcting the transmission channel delay according to each of the above embodiments. The method for correcting the transmission channel delay includes: obtaining transmission channel delay base station Tx Delay parameter information corresponding to the base station; providing positioning reference signal setting information to a user equipment UE, transmitting the base station Tx Delay parameter information to the UE, and causing the UE to correct a positioning measurement value based on the base station Tx Delay parameter information; Here, the positioning measurement value is obtained by the user equipment UE measuring a downlink positioning reference signal transmitted from the base station based on downlink positioning reference signal setting information, and / or obtained by the base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal setting information.

[0404] The processor-readable storage medium may be any available medium or data storage device accessible by the processor, including but not limited to magnetic memory (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical memory (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drives (SSD)), etc.

[0405] As will be understood by those skilled in the art, embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure can adopt entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware. Furthermore, the present disclosure can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, optical memory, etc.) containing computer-usable program code.

[0406] The present disclosure will be described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products of embodiments of the present disclosure. It will be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be realized by computer-executable instructions. These computer-executable instructions are provided to the processor of a general-purpose computer, a dedicated computer, an embedded processor, or other programmable data processing device to generate a machine, so that means for realizing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram are generated by the execution of the instructions by the processor of the computer or other programmable data processing device.

[0407] These processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be executed on the computer or other programmable data processing device to generate a process implemented on the computer. Thereby, the instructions executed on the computer or other programmable data processing device provide steps for realizing the functions specified in one or more flows of the flowchart and / or one or more blocks of the block diagram.

[0408] Of course, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Therefore, if these changes and modifications of the present disclosure are included in the claims of the present disclosure and the equivalent technical scope thereof, the present disclosure is also intended to include these changes and modifications.

Explanation of Reference Numerals

[0409] 1100 Transceiver 1110 Processor 1120 Memory 1200 Transceiver 1210 Processor 1220 Memory 1230 User Interface

Claims

1. It is applied to the location management function LMF, receiving transmission channel delay Tx Delay parameter information transmitted from a transmitting node and transmitting positioning reference signal configuration information to a receiving node, the transmitting node being a base station and / or a user terminal UE; correcting a positioning measurement value based on the Tx Delay parameter information, wherein the positioning measurement value is obtained by the receiving node measuring a positioning reference signal transmitted from the transmitting node based on the positioning reference signal configuration information; Sending a positioning capability request message to a UE, wherein the positioning capability request message is for requesting the UE to notify the LMF of positioning capabilities supported by the UE and whether the UE is capable of providing UE Tx Delay parameter information; Receiving a positioning capability provision message sent from the UE, the positioning capability provision message being for informing the LMF of a positioning function supported by the UE and whether the UE is capable of providing UE Tx Delay parameter information; and transmitting a UE Tx Delay request message to a UE, the UE Tx Delay request message being for requesting the UE to provide UE Tx Delay parameter information.

2. When the transmitting node is a base station, the Tx Delay parameter information is base station Tx Delay parameter information, the receiving node is a UE, and the positioning reference signal is a downlink positioning reference signal; If the transmitting node is a UE, the Tx Delay parameter information is UE Tx Delay parameter information, the receiving node is a base station, and the positioning reference signal is an uplink positioning reference signal; 2. The method of claim 1, wherein when the transmitting node is a base station and a UE, the Tx Delay parameter information includes base station Tx Delay parameter information and UE Tx Delay parameter information; when the receiving node is a UE and a base station, the positioning reference signal is a downlink positioning reference signal and an uplink positioning reference signal, respectively.

3. When the transmitting node is a base station, receiving transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting positioning reference signal configuration information to the receiving node includes: Transmitting a TRP information request message to a base station to request the base station to provide its own TRP information, downlink positioning reference signal configuration information, and base station Tx Delay parameter information; receiving the TRP information, downlink positioning reference signal configuration information, and base station Tx Delay parameter information; transmitting a positioning assistance data provision message to a UE, the positioning assistance data provision message including the downlink positioning reference signal configuration information, the downlink positioning reference signal configuration information being for the UE to measure a downlink positioning reference signal transmitted from a base station to obtain a first positioning measurement value; The above-mentioned correction of the positioning measurement value based on the Tx Delay parameter information is performed by correcting the first positioning measurement value based on the base station Tx Delay parameter information; Before transmitting the TRP information request message to the base station as described above, Sending a positioning capability request message to a UE, wherein the positioning capability request message is for requesting the UE to notify the LMF of positioning capabilities supported by the UE; Receiving a positioning capability provision message sent from the UE, wherein the positioning capability provision message is for notifying the LMF of a positioning function supported by the UE; 3. The method of claim 2, further comprising: receiving a positioning assistance data request message transmitted from the UE, the positioning assistance data request message being for requesting the LMF to provide positioning assistance data to the UE.

4. When the transmitting node is a user terminal UE, receiving transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting positioning reference signal configuration information to the receiving node includes: receiving UE Tx Delay parameter information acquired by the UE; Sending a TRP information request message to a base station, the TRP information request message is for requesting the base station to provide its own TRP information and uplink positioning reference signal configuration information; receiving the TRP information and uplink positioning reference signal configuration information; transmitting a measurement information request message including the uplink positioning reference signal configuration information to the base station, the uplink positioning reference signal configuration information being for the base station to measure an uplink positioning reference signal transmitted from a UE to obtain a second positioning measurement value; The above-mentioned correction of the positioning measurement value based on the Tx Delay parameter information is performed by 3. The method of claim 2, further comprising correcting the second positioning measurement based on the UE Tx Delay parameter information.

5. When the transmitting nodes are a base station and a UE, receiving transmission channel delay Tx Delay parameter information transmitted from the transmitting node and transmitting positioning reference signal configuration information to the receiving node includes: receiving UE Tx Delay parameter information acquired by the UE; Sending a TRP information request message to a base station, the TRP information request message is for requesting the base station to provide its own TRP information, downlink positioning reference signal configuration information, uplink positioning reference signal configuration information and base station Tx Delay parameter information; receiving the TRP information, downlink positioning reference signal configuration information, uplink positioning reference signal configuration information, and base station Tx Delay parameter information; transmitting a positioning assistance data provision message including the downlink positioning reference signal configuration information to the UE, the downlink positioning reference signal configuration information being for the UE to measure a downlink positioning reference signal transmitted from a base station to obtain a third positioning measurement value; transmitting a measurement information request message including the uplink positioning reference signal configuration information to the base station, the uplink positioning reference signal configuration information being for the base station to measure an uplink positioning reference signal transmitted from a UE to obtain a fourth positioning measurement value; The above-mentioned correcting the positioning measurement value based on the Tx Delay parameter information includes: correcting the third positioning measurement value based on the base station Tx Delay parameter information; and correcting the fourth positioning measurement based on the UE Tx Delay parameter information; 3. The method of claim 2, further comprising: receiving a positioning assistance data request message transmitted from the UE, the positioning assistance data request message being for requesting the LMF to provide positioning assistance data to the UE.

6. It is applied to a user terminal UE, Obtaining transmission channel delay UE Tx Delay parameter information corresponding to the UE; Sending the UE Tx Delay parameter information to a location management function (LMF), the UE Tx Delay parameter information being for the LMF to correct positioning measurements; wherein the positioning measurement value is obtained by a base station measuring an uplink positioning reference signal transmitted from the UE based on uplink positioning reference signal configuration information; The sending of the UE Tx Delay parameter information to the location management function LMF includes: Receiving a positioning capability request message sent from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of the positioning capabilities supported by the UE and whether the UE is capable of providing UE Tx Delay parameter information; Sending a positioning capability provision message to the LMF, wherein the positioning capability provision message is for notifying the LMF of the positioning capabilities supported by the UE and whether the UE is capable of providing UE Tx Delay parameter information; receiving a UE Tx Delay request message sent from the LMF, the UE Tx Delay request message being for requesting the UE to provide UE Tx Delay parameter information; and transmitting a UE Tx Delay provision message including the UE Tx Delay parameter information to the LMF.

7. After sending the above-mentioned UE Tx Delay Provision message to the LMF, Further comprising: receiving uplink positioning reference signal configuration information transmitted by a base station through RRC signaling; transmitting an uplink positioning reference signal to the base station; the uplink positioning reference signal being for the base station to measure the uplink positioning reference signal and transmit a positioning measurement value obtained by the base station to the LMF; and the positioning measurement value being for the LMF to correct based on the UE Tx Delay parameter information; or After sending the above-mentioned UE Tx Delay Provision message to the LMF, Sending a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data; receiving a positioning assistance data provision message including downlink positioning reference signal configuration information transmitted from the LMF; measuring a downlink positioning reference signal transmitted from a base station based on the downlink positioning reference signal configuration information to obtain a third positioning measurement value; transmitting the third positioning measurement value to the LMF; and correcting the third positioning measurement value by the LMF based on base station Tx Delay parameter information; 7. The method of claim 6, further comprising: receiving uplink positioning reference signal configuration information transmitted by a base station through RRC signaling; transmitting an uplink positioning reference signal to the base station, the uplink positioning reference signal being used by the base station to measure the uplink positioning reference signal to obtain a fourth positioning measurement value; and transmitting the fourth positioning measurement value to the LMF, the fourth positioning measurement value being used by the LMF to correct the fourth positioning measurement value based on the UE Tx Delay parameter information.

8. It is applied to a user terminal UE, Obtaining transmission channel delay UE Tx Delay parameter information corresponding to the UE; receiving base station Tx Delay parameter information sent from a base station or a location management function LMF; and correcting positioning measurements based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information; wherein the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal configuration information; The above-mentioned receiving the base station Tx Delay parameter information transmitted from the base station or the location management function LMF includes: Receiving base station Tx Delay parameter information of the serving base station itself and base station Tx Delay parameter information of neighboring base stations transferred by the serving base station; or Receiving base station Tx Delay parameter information of the serving base station itself and base station Tx Delay parameter information of neighboring base stations transmitted by the LMF; or receiving base station Tx delay parameter information of a serving base station and a neighbor base station transmitted by the LMF.

9. If the transmitting node is a base station, before correcting the positioning measurements based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, Receiving a positioning capability request message sent from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of a positioning capability supported by the UE; Sending a positioning capability provision message to the LMF, wherein the positioning capability provision message is for notifying the LMF of a positioning function supported by the UE; Sending a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data; receiving a positioning assistance data providing message transmitted from an LMF, the positioning assistance data providing message being for providing the UE with positioning assistance data including downlink positioning reference signal configuration information; receiving a positioning information request message sent from an LMF, the positioning information request message being for requesting a UE to measure a downlink positioning reference signal sent from a base station; measuring a downlink positioning reference signal transmitted from a base station using the downlink positioning reference signal configuration information to obtain a fifth positioning measurement value; Specifically, correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information includes:

9. The method of claim 8, further comprising correcting the fifth positioning measurement value based on the base station Tx Delay parameter information.

10. If the transmitting node is a base station and a UE, before correcting the positioning measurement values based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information, Receiving a positioning capability request message sent from the LMF, wherein the positioning capability request message is for requesting the UE to notify the LMF of a positioning capability supported by the UE; Sending a positioning capability provision message to the LMF, wherein the positioning capability provision message is for notifying the LMF of a positioning function supported by the UE; Sending a positioning assistance data request message to the LMF to request the LMF to provide positioning assistance data; receiving a positioning assistance data providing message transmitted from an LMF, the positioning assistance data providing message being for providing the UE with positioning assistance data including downlink positioning reference signal configuration information; receiving a positioning information request message sent from an LMF, the positioning information request message being for requesting a UE to measure a downlink positioning reference signal sent from a base station; measuring a downlink positioning reference signal transmitted from a base station using the positioning assistance data to obtain a sixth positioning measurement value; receiving uplink positioning reference signal configuration information transmitted by a serving base station through RRC signaling; Further, the method includes: transmitting an uplink positioning reference signal to all base stations participating in the positioning based on RRC signaling, the uplink positioning reference signal being used by all base stations participating in the positioning based on uplink positioning reference signal configuration information transmitted by an LMF to obtain seventh positioning measurement values; and transmitting the seventh positioning measurement values to the UE by an LMF; wherein all base stations participating in the positioning include the serving base station and at least one neighboring base station; Specifically, correcting the positioning measurement value based on the UE Tx Delay parameter information and / or the base station Tx Delay parameter information includes: correcting the sixth positioning measurement value based on the base station Tx Delay parameter information; and The method of claim 8, further comprising correcting the seventh positioning measurement value based on the UE Tx Delay parameter information.

11. It is applied to the location management function LMF, Acquiring base station Tx Delay parameter information and positioning reference signal configuration information; transmitting the positioning reference signal configuration information to a receiving node; transmitting the base station Tx Delay parameter information to a user terminal UE, the base station Tx Delay parameter information being for the UE to correct positioning measurement values; wherein the positioning measurement value is obtained by the receiving node measuring the positioning reference signal transmitted from the transmitting node based on the positioning reference signal configuration information; Wherein, when the transmitting node is a base station, the receiving node is a UE, and when the transmitting nodes are a UE and a base station, the receiving nodes correspond to the base station and the UE, respectively; Sending a positioning capability request message to a UE, wherein the positioning capability request message is for requesting the UE to notify the LMF of positioning capabilities supported by the UE; Receiving a positioning capability provision message sent from a UE, wherein the positioning capability provision message is for notifying the LMF of positioning capabilities supported by the UE; Receiving a positioning assistance data request message sent from a UE, wherein the positioning assistance data request message is for requesting an LMF to provide positioning assistance data; transmitting a positioning assistance data providing message to the UE, the positioning assistance data providing message being for providing the UE with positioning assistance data including downlink positioning reference signal configuration information; a positioning information request message for requesting the UE to measure a downlink positioning reference signal transmitted from a base station, the downlink positioning reference signal being for the UE to measure using the positioning assistance data.

12. The above-mentioned base station Tx Delay parameter information and positioning reference signal configuration information are obtained by: Sending a TRP information request message to a base station and receiving a TRP information provision message sent from the base station; Here, the TRP information request message is for simultaneously requesting the serving base station to provide downlink positioning reference signal configuration information, uplink positioning reference signal configuration information, TRP information of the serving base station, and base station Tx Delay information, and for requesting the neighboring base station to provide the TRP information and base station Tx Delay information of the neighboring base station, Alternatively, the TRP information request message is for simultaneously requesting the serving base station to provide downlink positioning reference signal configuration information, the TRP information of the serving base station, and base station Tx Delay information, and the TRP information request message is for requesting the neighboring base station to provide the TRP information and base station Tx Delay information of the neighboring base station; After sending the positioning information request message to the UE as described above, sending a measurement information request message to all base stations participating in the positioning, the measurement information request message including uplink positioning reference signal configuration information for requesting all base stations participating in the positioning to measure an uplink positioning reference signal transmitted from the UE and report the measured positioning measurement values; 12. The method of claim 11, further comprising: receiving positioning measurement values transmitted from all base stations participating in the positioning; and transmitting the positioning measurement values transmitted from all base stations participating in the positioning to the UE.

13. a memory, a transceiver, and a processor; the memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of said processor; A location management function (LMF) characterized in that the processor is adapted to read a computer program in the memory and to execute the method according to claim 1 or claim 11.

14. a memory, a transceiver, and a processor; the memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of said processor; A user terminal UE, characterized in that the processor is adapted to read a computer program in the memory and to execute the method according to claim 6 or claim 8.

Images