Information processing method, terminal, core network device and positioning reference unit

Abstract

Provided in the present disclosure are an information processing method, a terminal, a core network device and a positioning reference unit. The method comprises: a terminal receiving a first message sent by a first core network device, wherein the first message carries a first differential correction value; and the terminal performing positioning calculation on the basis of the first differential correction value, wherein the first differential correction value comprises at least one of the following: a high-resolution relative time difference (HRTD) between a non-reference transmission and reception point (TRP) and a reference TRP, a relative phase difference (RPD) between the non-reference TRP and the reference TRP, a time change rate of the HRTD, and a time change rate of the RPD.

Description

Information processing method, terminal, core network equipment and positioning reference unit

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on January 12, 2024, with application number 202410052385.X and application name “Information Processing Method, Terminal, Core Network Equipment and Positioning Reference Unit,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to an information processing method, a terminal, a core network device, and a positioning reference unit. Background Art

[0003] The downlink positioning methods include: a positioning method based on the downlink time difference of arrival (DL-TDOA) and a positioning method based on the downlink angle of departure (DL-AoD). It supports the use of auxiliary data to notify the relative time difference (RTD) between different transmission and reception points (TRP). However, the granularity of the RTD supported at this stage is large and cannot meet the timing deviation accuracy requirements of carrier phase positioning (CPP). And each RTD only represents the timing deviation between TRPs at a certain moment. For the target terminal side, there may be a deviation between the RTD it receives and the RTD at the actual positioning moment, which will lead to reduced positioning accuracy.

[0004] To implement dual differential functionality, one possible solution is for the Positioning Reference Unit (PRU) to report reference signal measurements directly to the Location Management Function (LMF) network element, which then forwards them to the target terminal. This solution requires the PRU and target terminal to measure the downlink Positioning Reference Signal (PRS) within the same short time window. This can increase the PRU load and signaling overhead when the PRU needs to serve a large number of target terminals. Summary of the Invention

[0005] The present disclosure provides an information processing method, a terminal, a core network device and a positioning reference unit, which solve the problems of poor positioning accuracy, large PRU load and large signaling overhead in current positioning methods.

[0006] An embodiment of the present disclosure provides an information processing method, including:

[0007] The terminal receives a first message sent by the first core network device; wherein the first message carries a first differential correction number;

[0008] The terminal performs positioning solution according to the first differential correction number;

[0009] The first differential correction number includes at least one of the following:

[0010] High-accuracy Relative Time Difference (HRTD) between the non-reference TRP and the reference TRP;

[0011] Relative Phase Difference (RPD) between non-reference TRP and reference TRP;

[0012] Time rate of change of HRTD;

[0013] The time rate of change of RPD.

[0014] In some embodiments, the first message further carries at least one of the following information:

[0015] TRP sends the timing error group identifier;

[0016] TRP sending antenna identification;

[0017] Antenna reference point identification;

[0018] Time information corresponding to HRTD;

[0019] Time information corresponding to RPD.

[0020] In some embodiments, the granularity of the HRTD is smaller than T c ; Among them, T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of Fast Fourier Transform (FFT) points.

[0021] In some embodiments, before the terminal receives the first message sent by the first core network device, the method further includes:

[0022] The terminal sends a second message to the first core network device; wherein the second message carries the differential correction number type that the terminal expects the first core network device to provide.

[0023] In some embodiments, the first message further carries positioning assistance data;

[0024] or,

[0025] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0026] or,

[0027] The first message is used to request terminal capabilities.

[0028] In some embodiments, the terminal performs positioning solution according to the first differential correction number, including:

[0029] The terminal eliminates, according to the first differential correction number, a phase deviation and / or a timing deviation in a Reference Signal Carrier Phase Difference (RSCPD) measurement value to obtain a first RSCPD;

[0030] The terminal performs positioning solution according to the first RSCPD.

[0031] The present disclosure provides an information processing method, including:

[0032] The first core network device sends a first message to the terminal; wherein the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0033] HRTD of non-reference TRP and reference TRP;

[0034] RPD of non-reference TRP and reference TRP;

[0035] Time rate of change of HRTD;

[0036] The time rate of change of RPD.

[0037] In some embodiments, the first message further carries at least one of the following information:

[0038] TRP sends the timing error group identifier;

[0039] TRP sending antenna identification;

[0040] Antenna reference point identification;

[0041] Time information corresponding to HRTD;

[0042] Time information corresponding to RPD.

[0043] In some embodiments, the granularity of the HRTD is smaller than T c ; Among them, T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of FFT points.

[0044] In some embodiments, before the first core network device sends the first message to the terminal, the method further includes:

[0045] The first core network device receives a second message sent by the terminal; wherein the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

[0046] In some embodiments, before the first core network device sends the first message to the terminal, the method further includes:

[0047] The first core network device determines the first differential correction number.

[0048] In some embodiments, the first core network device determines the first differential correction number, including:

[0049] The first core network device receives a third message sent by one or more TRPs; wherein the third message carries a second differential correction number;

[0050] The first core network device determines the first differential correction number according to the second differential correction number;

[0051] The second differential correction number includes at least one of the following:

[0052] HRTD of the TRP and the reference TRP;

[0053] RPD of the TRP and the reference TRP;

[0054] Time rate of change of HRTD;

[0055] The time rate of change of RPD.

[0056] In some embodiments, before the first core network device receives the third message sent by one or more TRPs, the method further includes:

[0057] The first core network device sends a fourth message to one or more TRPs; wherein the fourth message is used to request a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0058] In some embodiments, the first core network device determines the first differential correction number, including:

[0059] The first core network device receives a fifth message sent by one or more PRUs; wherein the fifth message carries a second differential correction number;

[0060] The first core network device determines the first differential correction number according to the second differential correction number;

[0061] The second differential correction number includes at least one of the following:

[0062] HRTD of non-reference TRP and reference TRP;

[0063] RPD of non-reference TRP and reference TRP;

[0064] Time rate of change of HRTD;

[0065] The time rate of change of RPD.

[0066] In some embodiments, the first core network device determines the first differential correction number according to the second differential correction number, including:

[0067] If the second differential correction number is sent by a TRP or a PRU, the first core network device determines the second differential correction number as the first differential correction number;

[0068] and / or,

[0069] If the second differential correction number is sent by multiple TRPs or multiple PRUs, the first core network device averages or merges the second differential correction number to obtain the first differential correction number.

[0070] In some embodiments, the first core network device determines the first differential correction number, including:

[0071] The first core network device receives a fifth message sent by one or more PRUs; wherein the fifth message carries a reference signal measurement amount and a measurement quality indication;

[0072] When the measurement quality indication meets the differential correction accuracy requirement, the first core network device determines the first differential correction number according to the reference signal measurement amount.

[0073] In some embodiments, the reference signal measurement includes: a relative signal arrival time difference (RSTD) measurement, and / or a RSCPD measurement;

[0074] and / or,

[0075] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0076] In some embodiments, the first core network device determines the first differential correction number according to the reference signal measurement value, including:

[0077] The first core network device processes the reference signal measurement value to obtain a second differential correction number;

[0078] If the reference signal measurement amount is sent by one PRU, the first core network device determines the second differential correction number as the first differential correction number; and / or, if the reference signal measurement amount is sent by multiple PRUs, the first core network device averages or combines the second differential correction numbers corresponding to multiple PRUs to obtain the first differential correction number.

[0079] In some embodiments, the first core network device processes the reference signal measurement value to obtain a second differential correction number, including at least one of the following:

[0080] The first core network device performs a differential operation on the RSTD measurement value and the RSTD ideal value to obtain the HRTD;

[0081] The first core network device performs a differential operation on the RSCPD measurement value and the RSCPD ideal value to obtain an RPD;

[0082] The first core network device determines the time change rate of HRTD according to the HRTD at different times;

[0083] The first core network device determines the time change rate of the RPD based on the RPD at different times.

[0084] In some embodiments, before the first core network device receives the fifth message sent by one or more PRUs, the method further includes:

[0085] The first core network device sends a sixth message to one or more PRUs; wherein the sixth message is used to request a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0086] In some embodiments, the first message further carries positioning assistance data;

[0087] or,

[0088] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0089] or,

[0090] The first message is used to request terminal capabilities.

[0091] The present disclosure provides an information processing method, including:

[0092] The TRP sends a third message to the first core network device; wherein the third message carries the second differential correction number;

[0093] The second differential correction number includes at least one of the following:

[0094] HRTD of the TRP and the reference TRP;

[0095] RPD of the TRP and the reference TRP;

[0096] Time rate of change of HRTD;

[0097] The time rate of change of RPD.

[0098] In some embodiments, the granularity of the HRTD is smaller than T c ; Among them, T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of FFT points.

[0099] In some embodiments, before the TRP sends the third message to the first core network device, it further includes:

[0100] The TRP receives a fourth message sent by the first core network device; wherein the fourth message is used to request a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0101] In some embodiments, the TRP sends a third message to the first core network device, including:

[0102] The TRP periodically sends the third message to the first core network device;

[0103] or,

[0104] When the first condition is met, the TRP sends the third message to the first core network device;

[0105] The first condition includes at least one of the following:

[0106] HRTD is greater than the first threshold;

[0107] RPD is greater than the second threshold;

[0108] The RSTD measurement quality indication is greater than the third threshold;

[0109] The RSCPD measurement quality indication is greater than a fourth threshold.

[0110] The present disclosure provides an information processing method, including:

[0111] The PRU sends a fifth message to the first core network device; wherein the fifth message carries the second differential correction number, or the fifth message carries the reference signal measurement amount and the measurement quality indication;

[0112] The second differential correction number includes at least one of the following:

[0113] HRTD of non-reference TRP and reference TRP;

[0114] RPD of non-reference TRP and reference TRP;

[0115] Time rate of change of HRTD;

[0116] The time rate of change of RPD.

[0117] In some embodiments, the reference signal measurement includes: an RSTD measurement, and / or an RSCPD measurement;

[0118] and / or,

[0119] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0120] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of FFT points.

[0121] In some embodiments, before the PRU sends the fifth message to the first core network device, the method further includes:

[0122] The PRU receives a sixth message sent by the first core network device; wherein the sixth message is used to request a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0123] In some embodiments, the PRU sends a fifth message to the first core network device, including:

[0124] The PRU measures the PRS sent by the TRP to obtain the reference signal measurement amount and the measurement quality indicator;

[0125] The PRU sends a fifth message to the first core network device; wherein the fifth message carries the reference signal measurement value and the measurement quality indication.

[0126] In some embodiments, the PRU sends a fifth message to the first core network device, including:

[0127] The PRU measures the PRS sent by the TRP to obtain the reference signal measurement amount and the measurement quality indicator;

[0128] When the measurement quality indicator satisfies the differential correction accuracy requirement, the PRU processes the reference signal measurement value to obtain the second differential correction number;

[0129] The PRU sends a fifth message to the first core network device; wherein the fifth message carries the second differential correction number.

[0130] In some embodiments, the PRU processes the reference signal measurement to obtain the second differential correction number, including at least one of the following:

[0131] The PRU performs a differential operation on the RSTD measurement and the RSTD ideal value to obtain the HRTD;

[0132] The PRU performs a differential operation on the RSCPD measurement and the ideal RSCPD value to obtain the RPD;

[0133] The PRU determines the time change rate of HRTD according to the HRTD at different moments;

[0134] The PRU determines the time rate of change of the RPD based on the RPD at different moments.

[0135] An embodiment of the present disclosure provides a terminal, including a memory, a transceiver, and a processor;

[0136] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0137] Receiving a first message sent by a first core network device; wherein the first message carries a first differential correction number;

[0138] Performing positioning calculation according to the first differential correction number;

[0139] The first differential correction number includes at least one of the following:

[0140] HRTD of non-reference TRP and reference TRP;

[0141] RPD of non-reference TRP and reference TRP;

[0142] Time rate of change of HRTD;

[0143] The time rate of change of RPD.

[0144] In some embodiments, the first message further carries at least one of the following information:

[0145] TRP sends the timing error group identifier;

[0146] TRP sending antenna identification;

[0147] Antenna reference point identification;

[0148] Time information corresponding to HRTD;

[0149] Time information corresponding to RPD.

[0150] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0151] Send a second message to the first core network device; wherein, the second message carries the differential correction number type that the terminal expects the first core network device to provide.

[0152] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0153] Eliminate the phase deviation and / or timing deviation in the reference signal carrier phase difference RSCPD measurement value according to the first differential correction number to obtain a first RSCPD;

[0154] Perform positioning solution according to the first RSCPD.

[0155] An embodiment of the present application provides a terminal, including:

[0156] A receiving unit, configured to receive a first message sent by a first core network device; wherein the first message carries a first differential correction number;

[0157] a processing unit, configured to perform positioning calculation based on the first differential correction number;

[0158] The first differential correction number includes at least one of the following:

[0159] HRTD of non-reference TRP and reference TRP;

[0160] RPD of non-reference TRP and reference TRP;

[0161] Time rate of change of HRTD;

[0162] The time rate of change of RPD.

[0163] The embodiment of the present disclosure provides a core network device, including a memory, a transceiver, and a processor;

[0164] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0165] Sending a first message to the terminal; wherein the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0166] HRTD of non-reference TRP and reference TRP;

[0167] RPD of non-reference TRP and reference TRP;

[0168] Time rate of change of HRTD;

[0169] The time rate of change of RPD.

[0170] In some embodiments, the first message further carries at least one of the following information:

[0171] TRP sends the timing error group identifier;

[0172] TRP sending antenna identification;

[0173] Antenna reference point identification;

[0174] Time information corresponding to HRTD;

[0175] Time information corresponding to RPD.

[0176] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0177] A second message sent by a receiving terminal is received, wherein the second message carries the type of differential correction number that the terminal expects to provide.

[0178] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0179] Receiving a third message sent by one or more TRPs; wherein the third message carries a second differential correction number;

[0180] determining the first differential correction number according to the second differential correction number;

[0181] The second differential correction number includes at least one of the following:

[0182] HRTD of the TRP and the reference TRP;

[0183] RPD of the TRP and the reference TRP;

[0184] Time rate of change of HRTD;

[0185] The time rate of change of RPD.

[0186] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0187] Receiving a fifth message sent by one or more positioning reference units (PRUs); wherein the fifth message carries a second differential correction number;

[0188] determining the first differential correction number according to the second differential correction number;

[0189] The second differential correction number includes at least one of the following:

[0190] HRTD of non-reference TRP and reference TRP;

[0191] RPD of non-reference TRP and reference TRP;

[0192] Time rate of change of HRTD;

[0193] The time rate of change of RPD.

[0194] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0195] receiving a fifth message sent by one or more PRUs; wherein the fifth message carries a reference signal measurement quantity and a measurement quality indicator;

[0196] In a case where the measurement quality indicator satisfies the differential correction accuracy requirement, the first differential correction number is determined according to the reference signal measurement quantity.

[0197] The present disclosure provides a core network device, including:

[0198] A first sending unit is configured to send a first message to a terminal, wherein the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0199] HRTD of non-reference TRP and reference TRP;

[0200] RPD of non-reference TRP and reference TRP;

[0201] Time rate of change of HRTD;

[0202] The time rate of change of RPD.

[0203] The embodiment of the present disclosure provides a transceiver point, including a memory, a transceiver, and a processor;

[0204] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0205] Sending a third message to the first core network device; wherein the third message carries the second differential correction number;

[0206] The second differential correction number includes at least one of the following:

[0207] HRTD of the TRP and the reference TRP;

[0208] RPD of the TRP and the reference TRP;

[0209] Time rate of change of HRTD;

[0210] The time rate of change of RPD.

[0211] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0212] Sending the third message to the first core network device in a periodic manner;

[0213] or,

[0214] If the first condition is met, sending the third message to the first core network device;

[0215] The first condition includes at least one of the following:

[0216] HRTD is greater than the first threshold;

[0217] RPD is greater than the second threshold;

[0218] The RSTD measurement quality indication is greater than the third threshold;

[0219] The RSCPD measurement quality indication is greater than a fourth threshold.

[0220] An embodiment of the present disclosure provides a transceiver point, including:

[0221] A sending unit, configured to send a third message to the first core network device; wherein the third message carries a second differential correction number;

[0222] The second differential correction number includes at least one of the following:

[0223] HRTD of the TRP and the reference TRP;

[0224] RPD of the TRP and the reference TRP;

[0225] Time rate of change of HRTD;

[0226] The time rate of change of RPD.

[0227] The embodiment of the present disclosure provides a positioning reference unit, including a memory, a transceiver, and a processor;

[0228] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; and the processor is used to read the computer program in the memory and perform the following operations:

[0229] Sending a fifth message to the first core network device; wherein the fifth message carries the second differential correction number, or the fifth message carries the reference signal measurement amount and the measurement quality indication;

[0230] The second differential correction number includes at least one of the following:

[0231] HRTD of non-reference TRP and reference TRP;

[0232] RPD of non-reference TRP and reference TRP;

[0233] Time rate of change of HRTD;

[0234] The time rate of change of RPD.

[0235] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0236] Measuring the PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indicator;

[0237] Send a fifth message to the first core network device; wherein the fifth message carries the reference signal measurement value and the measurement quality indicator.

[0238] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0239] Measuring the PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indicator;

[0240] When the measurement quality indicator satisfies the differential correction accuracy requirement, processing the reference signal measurement value to obtain the second differential correction number;

[0241] Send a fifth message to the first core network device; wherein the fifth message carries the second differential correction number.

[0242] An embodiment of the present disclosure provides a positioning reference unit, including:

[0243] A sending unit, configured to send a fifth message to the first core network device; wherein the fifth message carries the second differential correction number, or the fifth message carries a reference signal measurement amount and a measurement quality indication;

[0244] The second differential correction number includes at least one of the following:

[0245] HRTD of non-reference TRP and reference TRP;

[0246] RPD of non-reference TRP and reference TRP;

[0247] Time rate of change of HRTD;

[0248] The time rate of change of RPD.

[0249] An embodiment of the present disclosure provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the steps of the information processing method described above.

[0250] The beneficial effects of the above technical solution disclosed in the present invention are:

[0251] In an embodiment of the present disclosure, a terminal receives a first message sent by a first core network device; wherein, the first message carries at least one of the following "first differential correction number" selected from the HRTD of the non-reference TRP and the reference TRP, the RPD of the non-reference TRP and the reference TRP, the time change rate of the HRTD, and the time change rate of the RPD. In this way, the terminal can eliminate the timing deviation of the measurement quantity based on the HRTD to ensure the timing deviation accuracy required by the positioning strategy. The terminal can also obtain the RTD of the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of the positioning. The terminal can also implement a double differential function based on the RPD and / or the time change rate of the RPD to reduce the increase in the PRU load and the increase in signaling overhead caused by the terminal obtaining the reference signal measurement quantity through air interface signaling to determine the phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load and large signaling overhead in the current positioning method. BRIEF DESCRIPTION OF THE DRAWINGS

[0252] FIG1 is a flowchart of an information processing method on a terminal side according to an embodiment of the present disclosure;

[0253] FIG2 is a flowchart showing an information processing method on the first core network device side according to an embodiment of the present disclosure;

[0254] FIG3 is a flowchart showing an information processing method at a transceiver side according to an embodiment of the present disclosure;

[0255] FIG4 is a flowchart showing an information processing method at the positioning reference unit side according to an embodiment of the present disclosure;

[0256] FIG5 is an interactive flow chart of the information processing method according to an embodiment of the present disclosure;

[0257] FIG6 shows one block diagram of a terminal according to an embodiment of the present disclosure;

[0258] FIG7 shows a second block diagram of a terminal according to an embodiment of the present disclosure;

[0259] FIG8 shows one block diagram of a first core network device according to an embodiment of the present disclosure;

[0260] FIG9 shows a second block diagram of the first core network device according to an embodiment of the present disclosure;

[0261] FIG10 shows one block diagram of a transceiver point according to an embodiment of the present disclosure;

[0262] FIG11 shows a second block diagram of a transceiver point according to an embodiment of the present disclosure;

[0263] FIG12 shows one block diagram of a positioning reference unit according to an embodiment of the present disclosure;

[0264] FIG13 shows a second block diagram of the positioning reference unit according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0265] To make the technical problems, technical solutions, and advantages to be solved by the present disclosure more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present disclosure. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and brevity, descriptions of known functions and configurations have been omitted.

[0266] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present disclosure. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0267] In the various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.

[0268] Additionally, the terms "system" and "network" are often used interchangeably herein.

[0269] The technical solution provided by the embodiments of the present disclosure can be applicable to a variety of systems, especially the fifth generation mobile communication technology (5G) system. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal devices and network devices. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0270] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO. It can also use diversity transmission, precoding transmission, or beamforming transmission.

[0271] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0272] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0273] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0274] The following is an introduction to the relevant technologies involved in this disclosure:

[0275] 1. Currently, LMF is supported to use RTD to notify the target user equipment (UE) of the timing deviation between different TRPs. However, the granularity of RTD information (NR-RTD-Info) currently defined in the 5G New Radio (NR) system is:

[0276] Tc = 1 / (480KHz*4096) = 0.509ns = 15.26cm, where Δf max =480KHz is the maximum subcarrier spacing, N f =4096 is the number of points of the Fast Fourier Transform FFT.

[0277] As shown in Table 1, the auxiliary data required for the terminal autonomous (UE-based) DL-TDOA and / or DL-AoD positioning method is given.

[0278] Table 1: Mapping of posSibType to assistanceDataElement

[0279] For example, for the RTD information (NR-UEB-TRP-RTD-Info) of NR-UEB-TRP: if the posSibType in the information element (IE) PosSIB Type indicates "posSibType6-3", the IE NR-UEB-TRP-RTD-Info is used in the assistanceDataElement if the posSibType in IE PosSIB-Type indicates'posSibType6-3'. The code is as follows:

[0280] 2. RTD information (NR-RTD-Info)

[0281] The IE NR-RTD-Info is used by the location server to provide time synchronization information between a reference TRP and a list of neighbor TRPs. For example, the code is as follows:

[0282] 3. Subframe Offset

[0283] This field specifies the subframe boundary offset at the TRP antenna location between the reference TRP and this neighbour TRP in time units: T c =1 / (Δf max ·N f ). Here, Δf max =480kHz, N f=4096, the offset is counted from the beginning of a subframe#0 of the reference TRP to the beginning of the closest subsequent subframe of this neighbour TRP.

[0284] The embodiments of the present disclosure provide an information processing method, a terminal, a core network device, a transceiver point, and a positioning reference unit to address the problems of poor positioning accuracy, large PRU load, and large signaling overhead in current positioning methods. The method and the terminal (or core network device or transceiver point or positioning reference unit) are based on the same application concept. Since the principles of solving the problem by the method and the terminal (or core network device or transceiver point or positioning reference unit) are similar, the implementation of the method and the terminal (or core network device or transceiver point or positioning reference unit) can refer to each other, and the repeated parts will not be repeated.

[0285] As shown in FIG1 , an embodiment of the present disclosure provides an information processing method, comprising the following steps:

[0286] Step 11: The terminal receives a first message sent by the first core network device; wherein the first message carries a first differential correction number;

[0287] The first differential correction number includes at least one of the following:

[0288] HRTD of non-reference TRP and reference TRP;

[0289] RPD of non-reference TRP and reference TRP;

[0290] Time rate of change of HRTD;

[0291] The time rate of change of RPD.

[0292] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., but the embodiments of the present disclosure are not limited thereto.

[0293] In some embodiments, the first differential correction number can be provided by TRP or PRU, or determined by the first core network device based on data provided by TRP or PRU. The following will be specifically explained in conjunction with the embodiment on the first core network device side, and the embodiments of the present disclosure are not limited to this.

[0294] Step 12: The terminal performs positioning calculation based on the first differential correction number;

[0295] For example, the terminal may eliminate the phase deviation and / or timing deviation of the measurement value according to the first differential correction number, and perform positioning solution based on the measurement value after the deviation is eliminated.

[0296] In this embodiment, the terminal receives a first message sent by the first core network device; wherein the first message carries at least one of the following "first differential correction number" selected from the HRTD of the non-reference TRP and the reference TRP, the RPD of the non-reference TRP and the reference TRP, the time change rate of the HRTD, and the time change rate of the RPD. In this way, the terminal can eliminate the timing deviation of the measurement quantity based on the HRTD to ensure the timing deviation accuracy required by the positioning strategy. The terminal can also obtain the RTD of the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of the positioning. The terminal can also implement a double differential function based on the RPD and / or the time change rate of the RPD to reduce the increase in the PRU load and the increase in signaling overhead caused by the terminal obtaining the reference signal measurement quantity through air interface signaling to determine the phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load and large signaling overhead in the current positioning method.

[0297] In some embodiments, the first message further carries at least one of the following information:

[0298] TRP sends the timing error group IDentity (TEG ID);

[0299] TRP sending antenna identification;

[0300] Antenna Reference Point IDentity (ARP ID);

[0301] Time information corresponding to HRTD; for example, the time information may be the moment corresponding to HRTD, that is, the moment corresponding to HRTD included in the first differential correction number.

[0302] Time information corresponding to the RPD; for example, the time information may be the moment corresponding to the RPD, that is, the moment corresponding to the RPD included in the first differential correction number.

[0303] In some embodiments, the granularity of the HRTD is smaller than T c ; Among them, T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, Nf is the number of points of the Fast Fourier Transform FFT.

[0304] For example: Δf max The value range includes but is not limited to {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz, 960kHz}. For example, the maximum subcarrier spacing of the 5G NR system is 480kHz.

[0305] For example: N f The value range includes but is not limited to {2048, 4096, 8192}.

[0306] In some embodiments, before the terminal receives the first message sent by the first core network device, the method further includes:

[0307] The terminal sends a second message to the first core network device; wherein the second message carries the differential correction number type that the terminal expects the first core network device to provide.

[0308] For example, the second message may be a positioning request message, or may be any other message. For example, taking the CPP positioning method as an example, the second message may be called a UE-based NR CPP positioning request message, but the embodiments of the present disclosure are not limited thereto.

[0309] In this embodiment, the terminal may inform the first core network device of the type of differential correction number that the terminal expects the first core network device to provide, or the type of differential correction number that the terminal needs or wants the first core network device to provide, that is, the terminal may request the first core network device to provide which type or types of differential correction numbers. In this way, the first core network device may send the first message to the terminal based on the type of differential correction number that the terminal expects, needs, or requests.

[0310] For example, the differential correction number types include, but are not limited to, at least one of: HRTD, RPD, the time rate of change of HRTD, and the time rate of change of RPD. For example, if the terminal informs the first core network device through the second message that the differential correction number types expected, required, or requested to be provided by the first core network device are: HRTD and the time rate of change of HRTD, then the first core network device may carry the value of HRTD and the value of the time rate of change of HRTD in the first message sent to the terminal. Of course, the embodiments of the present disclosure are not limited to this.

[0311] In some embodiments, when the first core network device sends the first message to the terminal, it may send the first message to the terminal in a periodic manner, or it may send the first message to the terminal in a non-periodic manner, etc. The embodiments of the present disclosure are not limited to this.

[0312] In some embodiments, the first core network device sends the first message to the terminal, which may be sent separately using a newly defined message. For example, taking the CPP positioning method as an example, the first message may be called an NR CPP differential correction number message, or other messages, etc. The embodiments of the present disclosure are not limited to this.

[0313] In some embodiments, the first core network device may send the first message to the terminal based on an existing message. For example, the first core network device may reuse the message for sending positioning assistance data to carry the first differential correction number. For example, the first differential correction number may be sent together with the positioning assistance data, that is, the first message carries the first differential correction number and also carries positioning assistance data. Alternatively, the first differential correction number is added to the positioning assistance data, that is, the first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number. For example, taking the UE-based positioning method as an example, the positioning assistance data is also the UE-based positioning assistance data.

[0314] For another example, the first core network device may reuse a message for requesting terminal capabilities to carry the first differential correction number, that is, the first message is used to request terminal capabilities.

[0315] In some embodiments, the terminal performs positioning solution according to the first differential correction number, including:

[0316] The terminal eliminates the phase deviation and / or timing deviation in the RSCPD measurement value according to the first differential correction number to obtain a first RSCPD;

[0317] The terminal performs positioning solution according to the first RSCPD.

[0318] For example: the terminal can eliminate the timing deviation in the RSCPD measurement quantity based on the HRTD and / or the time change rate of HRTD of the non-reference TRP and the reference TRP, and / or the terminal can eliminate the phase deviation in the RSCPD measurement quantity based on the RPD and / or the time change rate of RPD of the non-reference TRP and the reference TRP, etc., so as to improve the accuracy of positioning.

[0319] The following describes the process of the target UE executing the information processing method:

[0320] Step 1. The target UE sends a "UE-based NR CPP" positioning request message (i.e., the second message) to the LMF, where the positioning request message includes the type of differential correction number that the terminal expects the LMF to provide.

[0321] Here, "expectation" can be understood as the type of differential correction number that the terminal needs or wants to be provided by the first core network device, or it can also be referred to as the type of differential correction number that the terminal requests the first core network device to provide. For example: the differential correction number type includes but is not limited to: HRTD, RPD, the time change rate of HRTD, at least one of the time change rate of RPD. For example, if the terminal informs the first core network device through the second message that the type of differential correction number that it expects, needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present disclosure are not limited to this.

[0322] Step 2: The target UE receives a first message of a first differential correction number from the LMF, and uses the first differential correction number to eliminate the initial phase deviation RPD between different TRPs and the initial timing deviation RTD between different TRPs contained in the RSCPD measurement. The target UE performs UE-based NR CPP positioning solution based on the differential positioning measurement value RSCPD after the deviation is eliminated.

[0323] The terminal involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called User Equipment (UE). A wireless terminal can communicate with one or more core networks (CN) via a radio access network (RAN). A wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0324] As shown in FIG2 , an embodiment of the present disclosure provides an information processing method, comprising the following steps:

[0325] Step 21: The first core network device sends a first message to the terminal; wherein the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0326] HRTD of non-reference TRP and reference TRP;

[0327] RPD of non-reference TRP and reference TRP;

[0328] Time rate of change of HRTD;

[0329] The time rate of change of RPD.

[0330] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., but the embodiments of the present disclosure are not limited thereto.

[0331] In some embodiments, the first differential correction number can be provided by TRP or PRU, or determined by the first core network device based on data provided by TRP or PRU. This will be explained in detail below in conjunction with the embodiments, but the embodiments of the present disclosure are not limited to this.

[0332] In this embodiment, the first core network device sends a first message to the terminal; wherein the first message carries at least one of the following "first differential correction number" selected from the HRTD of the non-reference TRP and the reference TRP, the RPD of the non-reference TRP and the reference TRP, the time change rate of the HRTD, and the time change rate of the RPD. In this way, the terminal can eliminate the timing deviation of the measurement quantity based on the HRTD to ensure the timing deviation accuracy required by the positioning strategy. The terminal can also obtain the RTD of the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of the positioning. The terminal can also implement a double differential function based on the RPD and / or the time change rate of the RPD to reduce the increase in the PRU load and the increase in signaling overhead caused by the terminal obtaining the reference signal measurement quantity through air interface signaling to determine the phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load and large signaling overhead in the current positioning method.

[0333] In some embodiments, the first message further carries at least one of the following information:

[0334] TRP transmit timing error group identifier (TRP Tx TEG ID);

[0335] TRP transmit antenna identifier (TRP Tx antenna ID);

[0336] Antenna Reference Point Identifier (ARP ID);

[0337] Time information corresponding to the HRTD; for example, the time information may be the moment corresponding to the HRTD, that is, the moment corresponding to the HRTD included in the first differential correction number;

[0338] Time information corresponding to the RPD; for example, the time information may be the moment corresponding to the RPD, that is, the moment corresponding to the RPD included in the first differential correction number.

[0339] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf maxis the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0340] For example: Δf max The value range includes but is not limited to {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz, 960kHz}. For example, the maximum subcarrier spacing of the 5G NR system is 480kHz.

[0341] For example: N f The value range includes but is not limited to {2048, 4096, 8192}.

[0342] In some embodiments, before the first core network device sends the first message to the terminal, the method further includes:

[0343] The first core network device receives a second message sent by the terminal; wherein the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

[0344] For example, the second message may be a positioning request message, or may be any other message. For example, taking the CPP positioning method as an example, the second message may be called a UE-based NR CPP positioning request message, but the embodiments of the present disclosure are not limited thereto.

[0345] In this embodiment, the terminal may inform the first core network device of the type of differential correction number that the terminal expects the first core network device to provide, or the type of differential correction number that the terminal needs or wants the first core network device to provide, that is, the terminal may request the first core network device to provide which type or types of differential correction numbers. In this way, the first core network device may send the first message to the terminal based on the type of differential correction number that the terminal expects, needs, or requests.

[0346] For example, the differential correction number types include, but are not limited to, at least one of: HRTD, RPD, the time rate of change of HRTD, and the time rate of change of RPD. For example, if the terminal informs the first core network device through the second message that the differential correction number types expected, required, or requested to be provided by the first core network device are: HRTD and the time rate of change of HRTD, then the first core network device may carry the value of HRTD and the value of the time rate of change of HRTD in the first message sent to the terminal. Of course, the embodiments of the present disclosure are not limited to this.

[0347] In some embodiments, when the first core network device sends the first message to the terminal, it may send the first message to the terminal in a periodic manner, or it may send the first message to the terminal in a non-periodic manner, etc. The embodiments of the present disclosure are not limited to this.

[0348] In some embodiments, the first core network device sends the first message to the terminal, which may be sent separately using a newly defined message. For example, taking the CPP positioning method as an example, the first message may be called an NR CPP differential correction number message, or other messages, etc. The embodiments of the present disclosure are not limited to this.

[0349] In some embodiments, the first core network device may send the first message to the terminal based on an existing message. For example, the first core network device may reuse the message for sending positioning assistance data to carry the first differential correction number. For example, the first differential correction number may be sent together with the positioning assistance data, that is, the first message carries the first differential correction number and also carries positioning assistance data. Alternatively, the first differential correction number is added to the positioning assistance data, that is, the first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number. For example, taking the UE-based positioning method as an example, the positioning assistance data is also the UE-based positioning assistance data.

[0350] For another example, the first core network device may reuse a message for requesting terminal capabilities to carry the first differential correction number, that is, the first message is used to request terminal capabilities.

[0351] In some embodiments, when the first differential correction number is determined by the first core network device based on data provided by TRP or PRU, that is, before the first core network device sends the first message to the terminal, it also includes: the first core network device determines the first differential correction number.

[0352] As an implementation method: the first differential correction number is determined based on direct reporting of the TRP.

[0353] In some embodiments, the first core network device determines the first differential correction number, including:

[0354] The first core network device receives a third message sent by one or more TRPs; wherein the third message carries a second differential correction number;

[0355] The first core network device determines the first differential correction number according to the second differential correction number;

[0356] The second differential correction number includes at least one of the following:

[0357] HRTD of the TRP and the reference TRP;

[0358] RPD of the TRP and the reference TRP;

[0359] Time rate of change of HRTD;

[0360] The time rate of change of RPD.

[0361] In some embodiments, the first core network device obtains the second differential correction number from one or more TRPs, which may be periodic or one-time. In other words, one or more TRPs may report the second differential correction number periodically, or one or more TRPs may report the second differential correction number when the first condition is met.

[0362] For example, one or more TRPs may each calculate a second differential correction number for the TRP relative to a reference TRP and report the result to the first core network device. Specifically, one or more TRPs may calculate the second differential correction number based on known information stored in advance, or may calculate the second differential correction number based on information measured based on PRSs sent between TRPs, etc. The embodiments of the present disclosure are not limited thereto.

[0363] For periodic reporting of the second differential correction number, a reporting period for the second differential correction number may be defined and configured. For reporting the second differential correction number when the first condition is met, a reporting threshold for the second differential correction number and / or the measurement quality indicator may be defined and configured, i.e., if a certain threshold is exceeded, the TRP reports the second differential correction number; otherwise, the TRP does not report the second differential correction number.

[0364] In some embodiments, the first condition includes at least one of the following:

[0365] HRTD is greater than the first threshold;

[0366] RPD is greater than the second threshold;

[0367] The RSTD measurement quality indication is greater than the third threshold;

[0368] The RSCPD measurement quality indication is greater than a fourth threshold.

[0369] In some embodiments, before the first core network device receives the third message sent by one or more TRPs, the method further includes:

[0370] The first core network device sends a fourth message to one or more TRPs; wherein the fourth message is used to request a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0371] In this embodiment, the first core network device may send a fourth message to one or more TRPs to request the one or more TRPs to provide a first differential correction number. In this way, based on the request of the first core network device, the one or more TRPs may send a second differential correction number to the first core network device. For example, using the CPP positioning method as an example, the fourth message may be called an NR CPP differential correction number request message, or may be other messages, but the embodiments of the present disclosure are not limited thereto.

[0372] In some embodiments, the second differential correction number reported by one or more TRPs is used to determine the first differential correction number.

[0373] Specifically, the first core network device determines the first differential correction number according to the second differential correction number, including:

[0374] If the second differential correction number is sent by a TRP, the first core network device determines the second differential correction number as the first differential correction number;

[0375] and / or,

[0376] If the second differential correction number is sent by multiple TRPs, the first core network device averages or merges the second differential correction number to obtain the first differential correction number.

[0377] For example: the first core network device receives a second differential correction number sent by a TRP, or in other words, when only one TRP sends a second differential correction number, the second differential correction number is the first differential correction number that the first core network device needs to provide to the terminal.

[0378] For another example, when a first core network device receives second differential correction numbers sent by multiple TRPs, or in other words, when multiple TRPs send second differential correction numbers, the first core network device needs to further process the second differential correction numbers sent by the multiple TRPs to obtain the first differential correction number. For example, the first core network device averages or combines the second differential correction numbers sent by the multiple TRPs to obtain the first differential correction number.

[0379] It should be noted that the first core network device averages or combines the second differential correction numbers sent by multiple TRPs, and averages or combines the second differential correction numbers of the same non-reference TRP relative to the reference TRP. For example, the first core network device averages or combines the second differential correction numbers of TRP 1 relative to the reference TRP sent by multiple TRPs.

[0380] As another implementation manner: the first differential correction number is determined based on direct reporting by the PRU.

[0381] In some embodiments, the first core network device determines the first differential correction number, including:

[0382] The first core network device receives a fifth message sent by one or more PRUs; wherein the fifth message carries a second differential correction number;

[0383] The first core network device determines the first differential correction number according to the second differential correction number;

[0384] The second differential correction number includes at least one of the following:

[0385] HRTD of non-reference TRP and reference TRP;

[0386] RPD of non-reference TRP and reference TRP;

[0387] Time rate of change of HRTD;

[0388] The time rate of change of RPD.

[0389] In some embodiments, the first core network device obtains the second differential correction number from one or more PRUs, which may be periodic or one-time acquisition.

[0390] For example: one or more PRUs measure downlink PRSs from different TRPs in the same time window to obtain reference signal measurement quantities and measurement quality indicators. The reference signal measurement quantities include: RSTD measurement quantities and / or RSCPD measurement quantities; the measurement quality indicators include: RSTD measurement quality indicators and / or RSCPD measurement quality indicators. The PRU uses the measurement quality indicators to determine whether the quality of the RSTD and RSCPD measurement quantities meets the accuracy requirements of the differential correction number. If so, the PRU performs a differential operation on the RSTD measurement quantity and the ideal value of RSTD to obtain HRTD, and / or performs a differential operation on the RSCPD measurement quantity and the ideal value of RSCPD to obtain RPD. Alternatively, the PRU can also obtain the time rate of change of HRTD and / or RPD through RTD and / or RPD at different times, that is, obtain a second differential correction number. If not, the PRU discards the current RSTD and RSCPD measurement quantities.

[0391] In some embodiments, before the first core network device receives the fifth message sent by one or more PRUs, the method further includes:

[0392] The first core network device sends a sixth message to one or more PRUs; wherein the sixth message is used to request a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0393] In this embodiment, the first core network device may send a sixth message to one or more PRUs to request the one or more PRUs to provide a first differential correction number. In this way, based on the request of the first core network device, the one or more PRUs may send a second differential correction number to the first core network device. For example, using the CPP positioning method as an example, the sixth message may be called an NR CPP differential correction number request message, or may be other messages, but the embodiments of the present disclosure are not limited thereto.

[0394] In some embodiments, the second differential correction number reported by one or more PRUs is used to determine the first differential correction number.

[0395] Specifically, the first core network device determines the first differential correction number according to the second differential correction number, including:

[0396] If the second differential correction number is sent by a TRP or a PRU, the first core network device determines the second differential correction number as the first differential correction number;

[0397] and / or,

[0398] If the second differential correction number is sent by multiple TRPs or multiple PRUs, the first core network device averages or merges the second differential correction number to obtain the first differential correction number.

[0399] For example: the first core network device receives a second differential correction number sent by a PRU, or in other words, when only one PRU sends a second differential correction number, the second differential correction number is the first differential correction number that the first core network device needs to provide to the terminal.

[0400] For another example, when a first core network device receives second differential correction numbers sent by multiple PRUs, or in other words, when multiple PRUs send second differential correction numbers, the first core network device needs to further process the second differential correction numbers sent by the multiple PRUs to obtain a first differential correction number. For example, the first core network device averages or combines the second differential correction numbers sent by the multiple PRUs to obtain the first differential correction number.

[0401] It should be noted that the first core network device averages or combines the second differential correction numbers sent by multiple PRUs, and averages or combines the second differential correction numbers of the same non-reference TRP relative to the reference TRP. For example, the first core network device averages or combines the second differential correction numbers of TRP 1 sent by multiple PRUs relative to the reference TRP.

[0402] As another implementation manner: the first differential correction number is determined based on indirect reporting by the PRU.

[0403] In some embodiments, the first core network device determines the first differential correction number, including:

[0404] The first core network device receives a fifth message sent by one or more PRUs; wherein the fifth message carries a reference signal measurement amount and a measurement quality indication;

[0405] When the measurement quality indication meets the differential correction accuracy requirement, the first core network device determines the first differential correction number according to the reference signal measurement amount.

[0406] In some embodiments, the first core network device obtains reference signal measurement quantities and measurement quality indicators from one or more PRUs, which may be periodic or one-time acquisitions.

[0407] For example: one or more PRUs measure downlink PRSs from different TRPs within the same time window, obtain reference signal measurement quantities and measurement quality indicators, and report them to the first core network device.

[0408] In some embodiments, the reference signal measurement quantity includes: an RSTD measurement quantity and / or an RSCPD measurement quantity; in some embodiments, the measurement quality indicator includes: an RSTD measurement quality indicator and / or an RSCPD measurement quality indicator.

[0409] For example, a first core network device receives reference signal measurement quantities and measurement quality indicators sent by one or more PRUs, and determines, based on the measurement quality indicators, whether the quality of current RSTD and RSCPD measurement quantities meets the accuracy requirements of the differential correction number. If so, the first core network device determines the first differential correction number based on the reference signal measurement quantities. Alternatively, if not, the first core network device discards the RSTD and RSCPD measurement quantities.

[0410] In some embodiments, the first core network device determines the first differential correction number according to the reference signal measurement value, including:

[0411] The first core network device processes the reference signal measurement value to obtain a second differential correction number;

[0412] If the reference signal measurement amount is sent by one PRU, the first core network device determines the second differential correction number as the first differential correction number; and / or, if the reference signal measurement amount is sent by multiple PRUs, the first core network device averages or combines the second differential correction numbers corresponding to multiple PRUs to obtain the first differential correction number.

[0413] For example: when the first core network device receives a reference signal measurement value sent by a PRU, or in other words, when only one PRU sends a reference signal measurement value, the second differential correction number obtained by the first core network device based on the reference signal measurement value sent by this PRU is the first differential correction number that the first core network device needs to provide to the terminal.

[0414] For another example: When a first core network device receives reference signal measurement quantities sent by multiple PRUs, or in other words, when multiple PRUs send reference signal measurement quantities, the first core network device needs to further process a second differential correction number obtained by processing the reference signal measurement quantities sent by the multiple PRUs to obtain a first differential correction number. For example: The first core network device averages or combines the second differential correction numbers obtained by processing the reference signal measurement quantities sent by the multiple PRUs to obtain the first differential correction number.

[0415] It should be noted that the first core network device averages or combines the second differential correction numbers obtained by processing the reference signal measurement amounts sent by multiple PRUs, and averages or combines the second differential correction numbers of the same non-reference TRP relative to the reference TRP. For example, the first core network device averages or combines the second differential correction numbers of TRP 1 relative to the reference TRP obtained by processing the reference signal measurement amounts sent by multiple PRUs.

[0416] In some embodiments, the first core network device processes the reference signal measurement value to obtain a second differential correction number, including at least one of the following:

[0417] The first core network device performs a differential operation on the RSTD measurement value and the RSTD ideal value to obtain the HRTD;

[0418] The first core network device performs a differential operation on the RSCPD measurement value and the RSCPD ideal value to obtain an RPD;

[0419] The first core network device determines the time change rate of HRTD according to the HRTD at different times;

[0420] The first core network device determines the time change rate of the RPD based on the RPD at different times.

[0421] For example, the first core network device receives a reference signal measurement quantity and a measurement quality indicator sent by one or more PRUs. If it is determined based on the RSTD measurement quality indicator that the quality of the current RSTD measurement quantity meets the accuracy requirement of the differential correction number, the first core network device performs a differential operation on the RSTD measurement quantity and an ideal RSTD value to obtain the HRTD, and / or determines the time rate of change of the HRTD based on the HRTD at different moments. Alternatively, if the accuracy requirement of the differential correction number is not met, the first core network device discards the RSTD measurement quantity.

[0422] For another example, the first core network device receives a reference signal measurement amount and a measurement quality indicator sent by one or more PRUs. If it is determined based on the RSCPD measurement quality indicator that the quality of the current RSCPD measurement amount meets the accuracy requirement of the differential correction number, the first core network device performs a differential operation on the RSCPD measurement amount and an ideal RSCPD value to obtain an RPD, and / or determines a time rate of change of the RPD based on the RPDs at different moments. Alternatively, if the accuracy requirement of the differential correction number is not met, the first core network device discards the RSCPD measurement amount.

[0423] In some embodiments, before the first core network device receives the fifth message sent by one or more PRUs, the method further includes:

[0424] The first core network device sends a sixth message to one or more PRUs; wherein the sixth message is used to request a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0425] In this embodiment, the first core network device may send a sixth message to one or more PRUs to request the one or more PRUs to provide a first differential correction number. In this way, based on the request of the first core network device, the one or more PRUs may send a second differential correction number to the first core network device. For example, using the CPP positioning method as an example, the sixth message may be called an NR CPP differential correction number request message, or may be other messages, but the embodiments of the present disclosure are not limited thereto.

[0426] In some embodiments, the first core network device may send the sixth message to one or more PRUs before, after, or simultaneously with the downlink positioning assistance data message.

[0427] The following describes the process of executing the information processing method on the LMF, taking the first core network device as the LMF as an example:

[0428] Step 1. LMF receives the "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target terminal (UE), where the positioning request message includes the "NR CPP differential correction number" (i.e., differential correction number type) that the target UE expects LMF to provide.

[0429] Here, "expectation" can be understood as the type of differential correction number that the terminal needs or wants to be provided by the first core network device, or it can also be referred to as the type of differential correction number that the terminal requests the first core network device to provide. For example: the differential correction number type includes but is not limited to: HRTD, RPD, the time change rate of HRTD, at least one of the time change rate of RPD. For example, if the terminal informs the first core network device through the second message that the type of differential correction number that it expects, needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present disclosure are not limited to this.

[0430] Step 2: The LMF sends an "NR CPP differential correction number" request message (i.e., the fourth message) to one or more TRPs, and / or sends an "NR CPP differential correction number" request message (i.e., the sixth message) to one or more PRUs (or reference UEs), where the request message includes information about the reference TRP. This request message can be sent before, after, or simultaneously with the downlink positioning assistance data message sent to the PRU.

[0431] Step 3: LMF obtains the first differential correction number through one of the following three methods.

[0432] The first differential correction number includes at least one of the following:

[0433] HRTD of non-reference TRP and reference TRP;

[0434] RPD of non-reference TRP and reference TRP;

[0435] Time rate of change of HRTD;

[0436] The time rate of change of RPD.

[0437] Method 1: Direct reporting based on TRP: The LMF receives a second differential correction number reported by a TRP and determines it as the first differential correction number. Alternatively, the LMF receives second differential correction numbers reported by multiple TRPs and further processes them to obtain the first differential correction number.

[0438] Among them, the second differential correction number reported by multiple TRPs can be based on known information saved in advance, or can be calculated based on information obtained by measuring the PRS sent between TRPs. The reporting method of the second differential correction number includes: periodic reporting and / or non-periodic reporting. For periodic reporting, it is necessary to define and configure the reporting period of the second differential correction number. For non-periodic reporting, the reporting threshold of the second differential correction number and / or the measurement quality indication can be defined and configured, that is: when the second differential correction number and / or the measurement quality indication exceeds a certain threshold, the TRP reports the second differential correction number, otherwise, the TRP does not report the second differential correction number.

[0439] Method 2: PRU direct method: The LMF receives the second differential correction number reported by one PRU and determines it as the first differential correction number. Alternatively, the LMF receives the second differential correction numbers reported by multiple PRUs and further processes them to obtain the first differential correction number.

[0440] Mode 3: Indirect reporting by PRU: The LMF receives RSTD and RSCPD measurement quantities and measurement quality indications reported by one or more PRUs.

[0441] Step 4: LMF notifies the target UE of the first differential correction value.

[0442] The first message notifying the target UE of the first differential correction number by the LMF may be carried by UE-based positioning assistance data, by a message sending UE-based positioning assistance data, by a positioning request message, or by a newly defined message. For example, the first message may be broadcast, unicast, or multicast. The first message may be periodic or aperiodic.

[0443] As shown in FIG3 , an embodiment of the present disclosure provides an information processing method, comprising the following steps:

[0444] Step 31: The TRP sends a third message to the first core network device; wherein the third message carries the second differential correction number;

[0445] The second differential correction number includes at least one of the following:

[0446] HRTD of the TRP and the reference TRP;

[0447] A relative phase deviation RPD between the TRP and a reference TRP;

[0448] Time rate of change of HRTD;

[0449] The time rate of change of RPD.

[0450] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., but the embodiments of the present disclosure are not limited thereto.

[0451] In some embodiments, the second differential correction number reported by the TRP to the first core network device is used to determine the first differential correction number. For details, please refer to the embodiment on the first core network device side, which will not be repeated here.

[0452] In some embodiments, the granularity of the HRTD is smaller than T c ; Among them, T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of FFT points.

[0453] For example: Δf max The value range includes but is not limited to {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz, 960kHz}. For example, the maximum subcarrier spacing of the 5G NR system is 480kHz.

[0454] For example: N f The value range includes but is not limited to {2048, 4096, 8192}.

[0455] In some embodiments, before the transceiver point TRP sends the third message to the first core network device, the method further includes:

[0456] The TRP receives a fourth message sent by the first core network device; wherein the fourth message is used to request a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0457] In this embodiment, the first core network device may send a fourth message to one or more TRPs to request the one or more TRPs to provide a first differential correction number. In this way, based on the request of the first core network device, the one or more TRPs may send a second differential correction number to the first core network device. For example, using the CPP positioning method as an example, the fourth message may be called an NR CPP differential correction number request message, or may be other messages, but the embodiments of the present disclosure are not limited thereto.

[0458] In some embodiments, the transceiver point TRP sends a third message to the first core network device, including:

[0459] The TRP periodically sends the third message to the first core network device;

[0460] or,

[0461] When the first condition is met, the TRP sends the third message to the first core network device;

[0462] The first condition includes at least one of the following:

[0463] HRTD is greater than the first threshold;

[0464] RPD is greater than the second threshold;

[0465] The RSTD measurement quality indication is greater than the third threshold;

[0466] The RSCPD measurement quality indication is greater than a fourth threshold.

[0467] In this embodiment, the first core network device obtains the second differential correction number from one or more TRPs, which can be periodic or one-time. In other words, one or more TRPs can report the second differential correction number in a periodic manner, or one or more TRPs can report the second differential correction number when the first condition is met.

[0468] For example, one or more TRPs may each calculate a second differential correction number for the TRP relative to a reference TRP and report the result to the first core network device. Specifically, one or more TRPs may calculate the second differential correction number based on known information stored in advance, or may calculate the second differential correction number based on information measured based on PRSs sent between TRPs, etc. The embodiments of the present disclosure are not limited thereto.

[0469] For periodic reporting of the second differential correction number, a reporting period for the second differential correction number may be defined and configured. For reporting the second differential correction number when the first condition is met, a reporting threshold for the second differential correction number and / or the measurement quality indicator may be defined and configured, i.e., if a certain threshold is exceeded, the TRP reports the second differential correction number; otherwise, the TRP does not report the second differential correction number.

[0470] In an embodiment of the present disclosure, a TRP sends a third message carrying a second differential correction number to a first core network device. The first core network device determines a first differential correction number based on the second differential correction number and sends a first message to a terminal. The first message carries at least one of the following: the HRTD of the non-reference TRP and the reference TRP, the RPD of the non-reference TRP and the reference TRP, the time rate of change of the HRTD, and the time rate of change of the RPD. This "first differential correction number" allows the terminal to eliminate the timing deviation of the measured value based on the HRTD to ensure the timing deviation accuracy required by the positioning strategy. The terminal can also determine the RTD at the actual positioning moment based on the time rate of change of the HRTD to ensure positioning accuracy. The terminal can also implement a dual differential function based on the RPD and / or the time rate of change of the RPD to reduce the increased PRU load and signaling overhead caused by the terminal obtaining reference signal measurements through air interface signaling to determine phase deviation and / or timing deviation. This solves the problems of poor positioning accuracy, large PRU load, and high signaling overhead associated with current positioning methods.

[0471] The following describes the process of executing the information processing method by the PRU:

[0472] Step 1: The TRP receives a "First Differential Correction Number Request" message (i.e., the fourth message) from the LMF and calculates the second differential correction number. The request message includes information about the reference TRP. Multiple TRPs can calculate the second differential correction number based on pre-stored known information or on information measured using PRS signals sent to each other.

[0473] Step 2: The TRP directly reports the second differential correction number to the LMF. The second differential correction number can be reported periodically and / or aperiodically. For periodic reporting, the reporting period for the second differential correction number needs to be defined and configured. For aperiodic reporting, reporting thresholds for the second differential correction number and / or measurement quality can be defined and configured. Specifically, when the second differential correction number and / or measurement quality exceeds a certain threshold, the TRP reports the first differential correction number. Otherwise, the TRP does not report the second differential correction number.

[0474] Step 3: The TRP sends a downlink PRS signal to the PRU and the target UE.

[0475] In some embodiments, the TRP may be a base station, or one base station may correspond to one or more TRPs.

[0476] The base station involved in the embodiments of the present disclosure may include multiple cells that provide services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The base station can be used to exchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The base station can also coordinate the attribute management of the air interface. For example, the base station involved in the embodiments of the present disclosure may be a base station (Base Transceiver Station, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB) in Wide-band Code Division Multiple Access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and the distributed unit may also be geographically separated.

[0477] As shown in FIG4 , an embodiment of the present disclosure provides an information processing method, comprising the following steps:

[0478] Step 41: The PRU sends a fifth message to the first core network device; wherein the fifth message carries the second differential correction number, or the fifth message carries the reference signal measurement value and the measurement quality indicator;

[0479] The second differential correction number includes at least one of the following:

[0480] HRTD of non-reference TRP and reference TRP;

[0481] RPD of non-reference TRP and reference TRP;

[0482] Time rate of change of HRTD;

[0483] The time rate of change of RPD.

[0484] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., but the embodiments of the present disclosure are not limited thereto.

[0485] In some embodiments, the second differential correction number is used to determine the first differential correction number; or, a reference signal measurement quantity and a measurement quality indicator are used to determine the first differential correction number.

[0486] In some embodiments, the reference signal measurement includes: a relative signal time difference of arrival RSTD measurement, and / or a reference signal carrier phase difference RSCPD measurement;

[0487] and / or,

[0488] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0489] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0490] For example: Δf max The value range includes but is not limited to {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz, 960kHz}. For example, the maximum subcarrier spacing of the 5G NR system is 480kHz.

[0491] For example: N f The value range includes but is not limited to {2048, 4096, 8192}.

[0492] In some embodiments, before the positioning reference unit PRU sends the fifth message to the first core network device, the method further includes:

[0493] The PRU receives a sixth message sent by the first core network device; wherein the sixth message is used to request a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0494] In this embodiment, the first core network device may send a sixth message to one or more PRUs to request the one or more PRUs to provide a first differential correction number. In this way, based on the request of the first core network device, the one or more PRUs may send a second differential correction number to the first core network device. For example, using the CPP positioning method as an example, the sixth message may be called an NR CPP differential correction number request message, or may be other messages, but the embodiments of the present disclosure are not limited thereto.

[0495] In some embodiments, the positioning reference unit PRU sends a fifth message to the first core network device, including:

[0496] The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indicator;

[0497] The PRU sends a fifth message to the first core network device; wherein the fifth message carries the reference signal measurement value and the measurement quality indication.

[0498] For example: one or more PRUs measure downlink PRSs from different TRPs within the same time window, obtain reference signal measurement quantities and measurement quality indicators, and report them to the first core network device.

[0499] In some embodiments, the positioning reference unit PRU sends a fifth message to the first core network device, including:

[0500] The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indicator;

[0501] When the measurement quality indicator satisfies the differential correction accuracy requirement, the PRU processes the reference signal measurement value to obtain the second differential correction number;

[0502] The PRU sends a fifth message to the first core network device; wherein the fifth message carries the second differential correction number.

[0503] In some embodiments, the PRU processes the reference signal measurement to obtain the second differential correction number, including at least one of the following:

[0504] The PRU performs a differential operation on the RSTD measurement and the RSTD ideal value to obtain the HRTD;

[0505] The PRU performs a differential operation on the RSCPD measurement and the ideal RSCPD value to obtain the RPD;

[0506] The PRU determines the time change rate of HRTD according to the HRTD at different moments;

[0507] The PRU determines the time rate of change of the RPD based on the RPD at different moments.

[0508] For example: one or more PRUs measure downlink PRSs from different TRPs in the same time window to obtain reference signal measurement quantities and measurement quality indicators. The reference signal measurement quantities include: RSTD measurement quantities and / or RSCPD measurement quantities; the measurement quality indicators include: RSTD measurement quality indicators and / or RSCPD measurement quality indicators. The PRU uses the measurement quality indicators to determine whether the quality of the RSTD and RSCPD measurement quantities meets the accuracy requirements of the differential correction number. If so, the PRU performs a differential operation on the RSTD measurement quantity and the ideal value of RSTD to obtain HRTD, and / or performs a differential operation on the RSCPD measurement quantity and the ideal value of RSCPD to obtain RPD. Alternatively, the PRU can also obtain the time rate of change of HRTD and / or RPD through RTD and / or RPD at different times, that is, obtain a second differential correction number. If not, the PRU discards the current RSTD and RSCPD measurement quantities.

[0509] In an embodiment of the present disclosure, a PRU sends a message carrying a second differential correction number or a reference signal measurement quantity and a measurement quality indicator to a first core network device. The first core network device determines a first differential correction number based on the second differential correction number or the reference signal measurement quantity and the measurement quality indicator, and sends a first message to the terminal. The first message carries at least one of the following: the HRTD of the non-reference TRP and the reference TRP, the RPD of the non-reference TRP and the reference TRP, the time rate of change of the HRTD, or the time rate of change of the RPD. This allows the terminal to eliminate the timing deviation of the measurement quantity based on the HRTD to ensure timing deviation accuracy that meets positioning policy requirements. The terminal can also determine the RTD at the actual positioning moment based on the time rate of change of the HRTD to ensure positioning accuracy. The terminal can also implement a double differential function based on the RPD and / or the time rate of change of the RPD to reduce the increased PRU load and signaling overhead caused by the terminal obtaining reference signal measurement quantities through air interface signaling to determine phase deviation and / or timing deviation. This solves the problems of poor positioning accuracy, large PRU load, and high signaling overhead associated with current positioning methods.

[0510] The following describes the process of executing the information processing method by the PRU:

[0511] Step 1. The PRU (or reference UE) receives a "first differential correction number request" message (i.e., the sixth message) from the LMF, where the request message contains relevant information of the reference TRP. The message can be sent before, after, or at the same time as the downlink positioning assistance data message.

[0512] Step 2: Multiple PRUs measure downlink PRS signals from different TRPs within the same time window notified by the LMF, obtain RSTD and RSCPD measurement quantities and measurement quality indicators, further calculate HRTD and RPD, and obtain the time change rate of HRTD and RPD through RTD and RPD at different times.

[0513] In some embodiments, the PRU determines whether the quality of the current RSTD and RSCPD measurements meets the accuracy requirements of the "NR CPP differential correction number" through the measurement quality indication.

[0514] If the conditions are met, the PRU performs a differential operation on the RSTD and RSCPD measurements from the ideal RSTD and RSCPD values ​​to obtain HRTD and RPD. The PRU then uses the RTD and RPD values ​​at different times to obtain the time rates of change of HRTD and RPD, and then proceeds to step 3.

[0515] If not, the PRU discards the current RSTD and RSCPD measurements.

[0516] Step 3: The PRU reports the second differential correction number to the LMF directly or indirectly, or reports the reference signal measurement quantity and measurement quality indicator used to calculate the first differential correction number.

[0517] Direct method: One or more PRUs report the second differential correction number to the LMF.

[0518] Indirect method: One or more PRUs report RSTD and RSCPD measurements, as well as measurement quality indicators, to the LMF.

[0519] As shown in FIG5 , an interactive flow chart of an information processing method is provided, which specifically includes:

[0520] Step 1A: The UE is in the RRC connected state;

[0521] Step 1B: The PRU is in the RRC connected state;

[0522] Step 2A: LMF requests positioning capability from UE.

[0523] Step 2B: LMF requests positioning capability from PRU;

[0524] Step 3A: UE reports positioning capability;

[0525] Step 3B: PRU reports positioning capability;

[0526] Step 4A: The UE requests positioning assistance data from the LMF ("UE-based NR CPP" positioning request);

[0527] Step 4B: The PRU requests positioning assistance data from the LMF.

[0528] Step 5B: The LMF sends a UE-based CPP information request to the gNB / TRP.

[0529] Step 6B: The gNB / TRP sends a UE-based CPP information response (PRS configuration information) to the LMF.

[0530] Step 7B: The LMF provides positioning assistance data (PRS configuration information) to the PRU.

[0531] Step 8B: The gNB / TRP sends a PRS reference signal.

[0532] Step 9B: The PRU measures the PRS reference signal;

[0533] Step 10B: LMF requests location-related information from PRU.

[0534] Step 11B: The PRU measures the downlink PRS to obtain HRTD, RIPD, and the time change rates of HRTD and RIPD.

[0535] Step 12B: The PRU reports the first differential correction number, the RSCPD measurement value, the PRU position, and a timestamp.

[0536] Step 5A: The LMF sends a UE-based CPP information request to the gNB / TRP.

[0537] Step 6A: The gNB / TRP sends a UE-based CPP information response (PRS configuration information) to the LMF.

[0538] Step 7A: The LMF provides positioning assistance data (PRS configuration information) to the UE.

[0539] Step 8A: The gNB / TRP sends a PRS reference signal.

[0540] Step 9A: The UE measures the PRS reference signal;

[0541] Step 10A: Request location-related information from the UE;

[0542] Step 11A: The UE calculates the position of the UE using the obtained positioning measurement value and information such as the base station position;

[0543] Step 12A: The UE reports the positioning solution result.

[0544] The following describes the interaction process of the information processing method disclosed herein with reference to specific embodiments:

[0545] Example 1:

[0546] For the LMF side:

[0547] Step 1. LMF receives the "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target terminal (UE), where the positioning request message includes the "NR CPP differential correction number" (i.e., differential correction number type) that the target UE expects LMF to provide.

[0548] Here, "expectation" can be understood as the type of differential correction number that the terminal needs or wants to be provided by the first core network device, or it can also be referred to as the type of differential correction number that the terminal requests the first core network device to provide. For example: the differential correction number type includes but is not limited to: HRTD, RPD, the time change rate of HRTD, at least one of the time change rate of RPD. For example, if the terminal informs the first core network device through the second message that the type of differential correction number that it expects, needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present disclosure are not limited to this.

[0549] Step 2: The LMF sends an "NR CPP differential correction number" request message (i.e., the fourth message) to one or more TRPs, and / or sends an "NR CPP differential correction number" request message (i.e., the sixth message) to one or more PRUs (or reference UEs), where the request message includes information about the reference TRP. This request message can be sent before, after, or simultaneously with the downlink positioning assistance data message sent to the PRU.

[0550] Step 3: LMF obtains the first differential correction number through the following method 1.

[0551] The first differential correction number includes at least one of the following:

[0552] HRTD of non-reference TRP and reference TRP;

[0553] RPD of non-reference TRP and reference TRP;

[0554] Time rate of change of HRTD;

[0555] The time rate of change of RPD.

[0556] Method 1: Direct reporting based on TRP: The LMF receives a second differential correction number reported by a TRP and determines it as the first differential correction number. Alternatively, the LMF receives second differential correction numbers reported by multiple TRPs and further processes them to obtain the first differential correction number.

[0557] Among them, the second differential correction number reported by multiple TRPs can be based on known information saved in advance, or can be calculated based on information obtained by measuring the PRS sent between TRPs. The reporting method of the second differential correction number includes: periodic reporting and / or non-periodic reporting. For periodic reporting, it is necessary to define and configure the reporting period of the second differential correction number. For non-periodic reporting, the reporting threshold of the second differential correction number and / or the measurement quality indication can be defined and configured, that is: when the second differential correction number and / or the measurement quality indication exceeds a certain threshold, the TRP reports the second differential correction number, otherwise, the TRP does not report the second differential correction number.

[0558] Step 4: LMF notifies the target UE of the first differential correction value.

[0559] The first message notifying the target UE of the first differential correction number by the LMF may be carried by UE-based positioning assistance data, by a message sending UE-based positioning assistance data, by a positioning request message, or by a newly defined message. For example, the first message may be broadcast, unicast, or multicast. The first message may be periodic or aperiodic.

[0560] In some embodiments, the RTD resolution is increased in the positioning assistance data notified by the LMF to the target UE. For example, the basic unit for updating the RTD is Tc / RATIO, where RATIO is a positive integer greater than or equal to 2 and may be predefined or configurable.

[0561] It should be noted that at least one PRU estimates the difference in TOA between different TRPs, compares it with the theoretical TOA difference, calculates the timing deviation (RTD) between different TRPs, and then the PRU reports the RTD to the LMF. If there are multiple PRUs reporting, the LMF averages the RTD values ​​reported by multiple PRUs to obtain the RTD and notifies the target UE. The corresponding code is as follows:

[0562] Or in some embodiments, the initial phase deviation RPD between different TRPs is newly added to the positioning assistance data notified by the LMF to the target UE. In some embodiments, the time variation of the RPD may also be included, for example, the time rate of change of the RPD.

[0563] The PRU simultaneously tracks the difference between the carrier phase measurements (RSCP) of the two TRPs and compares it with the theoretical RSCP phase difference to obtain the RPD.

[0564] The positioning assistance data does not need to refer to the absolute initial phase information of the TRP, but only needs to refer to the initial phase difference information between the TRP and the adjacent TRP (i.e., the differential value of the initial phase between different TRPs), for example: RPD = InitialPhase(TRP_n) - InitialPhase(TRP_ref). Among them, InitialPhase(TRP_ref) represents the initial phase value of the reference TRP, and InitialPhase(TRP_n) represents the initial phase value of the adjacent TRP.

[0565] Alternatively, in some embodiments, candidate values ​​for the broadcast notification period T of the RTD include 80ms, 160ms, 320ms, 640ms, 1280ms, 2560ms, and 5120ms. Within the time range of the notification period T, it is necessary to further consider the time-varying nature of the timing deviation caused by the UE crystal oscillator and the base station crystal oscillator. The following three methods are considered:

[0566] Method 1: Add the time change rate of the timing deviation RTD and RPD to the positioning assistance data notified by the LMF to the target UE, for example: RTD_Rate, RPD_rate.

[0567] Method 2: Based on the allowable positioning error range (for example, an error within 10% cycle and the crystal oscillator frequency deviation of TRP), the UE or LMF requests the serving base station to adjust the RTD / RPD broadcast period T. For example, the UE / LMF adjusts the RTD / RPD notification period T to the serving base station on-demand, or based on an event triggering the serving base station.

[0568] Method 3: LMF provides the allowable positioning error range and allows the PRU / target UE to adjust the period T by itself.

[0569] On the target UE side:

[0570] Step 1. The target UE sends a "UE-based NR CPP" positioning request message (i.e., the second message) to the LMF, where the positioning request message includes the type of differential correction number expected to be provided by the LMF.

[0571] Step 2: The target UE receives a first message of a first differential correction number from the LMF, and uses the first differential correction number to eliminate the initial phase deviation RPD between different TRPs and the initial timing deviation RTD between different TRPs contained in the RSCPD measurement. The target UE performs UE-based NR CPP positioning solution based on the differential positioning measurement value RSCPD after the deviation is eliminated.

[0572] For the base station / TRP side:

[0573] Step 1: The TRP receives a "First Differential Correction Number Request" message (i.e., the fourth message) from the LMF and calculates the second differential correction number. The request message includes information about the reference TRP. Multiple TRPs can calculate the second differential correction number based on pre-stored known information or on information measured using PRS signals sent to each other.

[0574] Step 2: The TRP directly reports the second differential correction number to the LMF. The second differential correction number can be reported periodically and / or aperiodically. For periodic reporting, the reporting period for the second differential correction number needs to be defined and configured. For aperiodic reporting, reporting thresholds for the second differential correction number and / or measurement quality indicator can be defined and configured. Specifically, when the second differential correction number and / or measurement quality indicator exceeds a certain threshold, the TRP reports the "first differential correction number." Otherwise, the TRP does not report the second differential correction number.

[0575] Step 3: The TRP sends a downlink PRS signal to the PRU and the target UE.

[0576] Example 2:

[0577] For the LMF side:

[0578] Step 1. LMF receives the "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target terminal (UE), where the positioning request message includes the "NR CPP differential correction number" (i.e., differential correction number type) that the target UE expects LMF to provide.

[0579] Here, "expectation" can be understood as the type of differential correction number that the terminal needs or wants to be provided by the first core network device, or it can also be referred to as the type of differential correction number that the terminal requests the first core network device to provide. For example: the differential correction number type includes but is not limited to: HRTD, RPD, the time change rate of HRTD, at least one of the time change rate of RPD. For example, if the terminal informs the first core network device through the second message that the type of differential correction number that it expects, needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present disclosure are not limited to this.

[0580] Step 2: The LMF sends an "NR CPP differential correction number" request message (i.e., the fourth message) to one or more TRPs, and / or sends an "NR CPP differential correction number" request message (i.e., the sixth message) to one or more PRUs (or reference UEs), where the request message includes information about the reference TRP. This request message can be sent before, after, or simultaneously with the downlink positioning assistance data message sent to the PRU.

[0581] Step 3: LMF obtains the first differential correction number through the following method 2 or method 3.

[0582] The first differential correction number includes at least one of the following:

[0583] HRTD of non-reference TRP and reference TRP;

[0584] RPD of non-reference TRP and reference TRP;

[0585] Time rate of change of HRTD;

[0586] The time rate of change of RPD.

[0587] Method 2: PRU direct method: The LMF receives the second differential correction number reported by one PRU and determines it as the first differential correction number. Alternatively, the LMF receives the second differential correction numbers reported by multiple PRUs and further processes them to obtain the first differential correction number.

[0588] Mode 3: Indirect reporting by PRU: The LMF receives RSTD and RSCPD measurement quantities and measurement quality indications reported by one or more PRUs.

[0589] Step 4: LMF notifies the target UE of the first differential correction value.

[0590] The first message notifying the target UE of the first differential correction number by the LMF may be carried by UE-based positioning assistance data, by a message sending UE-based positioning assistance data, by a positioning request message, or by a newly defined message. For example, the first message may be broadcast, unicast, or multicast. The first message may be periodic or aperiodic.

[0591] On the PRU side:

[0592] Step 1. The PRU (or reference UE) receives a "first differential correction number request" message (i.e., the sixth message) from the LMF, where the request message contains relevant information of the reference TRP. The message can be sent before, after, or at the same time as the downlink positioning assistance data message.

[0593] Step 2: Multiple PRUs measure downlink PRS signals from different TRPs within the same time window notified by the LMF, obtain RSTD and RSCPD measurement quantities and measurement quality indicators, further calculate HRTD and RPD, and obtain the time change rate of HRTD and RPD through RTD and RPD at different times.

[0594] In some embodiments, the PRU determines whether the quality of the current RSTD and RSCPD measurements meets the accuracy requirements of the "NR CPP differential correction number" through the measurement quality indication.

[0595] If the conditions are met, the PRU performs a differential operation on the RSTD and RSCPD measurements from the ideal RSTD and RSCPD values ​​to obtain HRTD and RPD. The PRU then uses the RTD and RPD values ​​at different times to obtain the time rates of change of HRTD and RPD, and then proceeds to step 3.

[0596] If not, the PRU discards the current RSTD and RSCPD measurements.

[0597] Step 3: The PRU reports the second differential correction number to the LMF directly or indirectly, or reports the reference signal measurement quantity and measurement quality indicator used to calculate the first differential correction number.

[0598] Direct method: One or more PRUs report the second differential correction number to the LMF.

[0599] Indirect method: One or more PRUs report RSTD and RSCPD measurements, as well as measurement quality indicators, to the LMF.

[0600] On the target UE side:

[0601] Step 1. The target UE sends a "UE-based NR CPP" positioning request message (i.e., the second message) to the LMF, where the positioning request message includes the type of differential correction number expected to be provided by the LMF.

[0602] Step 2: The target UE receives a first message of a first differential correction number from the LMF, and uses the first differential correction number to eliminate the initial phase deviation RPD between different TRPs and the initial timing deviation RTD between different TRPs contained in the RSCPD measurement. The target UE performs UE-based NR CPP positioning solution based on the differential positioning measurement value RSCPD after the deviation is eliminated.

[0603] For the base station / TRP side:

[0604] The TRP sends a downlink PRS signal to the PRU and the target UE.

[0605] In the embodiment of the present disclosure, the LMF carries a first differential correction number through a first message and notifies the target UE, so that the target UE adopts the first differential correction number to eliminate the initial RPD between different TRPs and the initial RTD between different TRPs, so as to achieve high-precision positioning results based on UE-based NR CPP positioning solution, and can also solve the problems of large PRU load and large air interface signaling overhead in conventional double differential schemes.

[0606] The above embodiments have introduced the information processing method disclosed herein. The following embodiments will further illustrate the corresponding terminals, core network devices, transceiver points, and positioning reference units with reference to the accompanying drawings.

[0607] As shown in FIG6 , this embodiment provides a terminal including a memory 61, a transceiver 62, and a processor 63. The memory 61 is used to store computer programs. The transceiver 62 is used to send and receive data under the control of the processor 63. For example, the transceiver 62 is used to receive and send data under the control of the processor 63. The processor 63 is used to read the computer program in the memory 61 and perform the following operations:

[0608] Receiving a first message sent by a first core network device; wherein the first message carries a first differential correction number;

[0609] The terminal performs positioning solution according to the first differential correction number;

[0610] The first differential correction number includes at least one of the following:

[0611] High-resolution relative time deviation (HRTD) between the non-reference transceiver point TRP and the reference TRP;

[0612] Relative phase deviation RPD between non-reference TRP and reference TRP;

[0613] Time rate of change of HRTD;

[0614] The time rate of change of RPD.

[0615] In some embodiments, the first message further carries at least one of the following information:

[0616] TRP sends the timing error group identifier;

[0617] TRP sending antenna identification;

[0618] Antenna reference point identification;

[0619] Time information corresponding to HRTD;

[0620] Time information corresponding to RPD.

[0621] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0622] In some embodiments, the processor 63 is configured to read the computer program in the memory 61 and perform the following operations:

[0623] Send a second message to the first core network device; wherein, the second message carries the differential correction number type that the terminal expects the first core network device to provide.

[0624] In some embodiments, the first message further carries positioning assistance data;

[0625] or,

[0626] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0627] or,

[0628] The first message is used to request terminal capabilities.

[0629] In some embodiments, the processor 63 is configured to read the computer program in the memory 61 and perform the following operations:

[0630] Eliminate the phase deviation and / or timing deviation in the reference signal carrier phase difference RSCPD measurement value according to the first differential correction number to obtain a first RSCPD;

[0631] Perform positioning solution according to the first RSCPD.

[0632] In FIG6 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 63 and various circuits of memory represented by memory 61. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 62 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 64 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0633] The processor 63 is responsible for managing the bus architecture and general processing, and the memory 61 can store data used by the processor 63 when performing operations.

[0634] In some embodiments, the processor 63 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). The processor may also adopt a multi-core architecture.

[0635] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0636] It should be noted here that the above-mentioned terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment on the above-mentioned terminal side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0637] As shown in FIG7 , an embodiment of the present disclosure provides a terminal 700 including:

[0638] The receiving unit 710 is configured to receive a first message sent by a first core network device; wherein the first message carries a first differential correction number;

[0639] The processing unit 720 is configured to perform positioning calculation based on the first differential correction number;

[0640] The first differential correction number includes at least one of the following:

[0641] High-resolution relative time deviation (HRTD) between the non-reference transceiver point TRP and the reference TRP;

[0642] The relative phase deviation RPD between the non-reference TRP and the reference TRP;

[0643] Time rate of change of HRTD;

[0644] The time rate of change of RPD.

[0645] In some embodiments, the first message further carries at least one of the following information:

[0646] TRP sends the timing error group identifier;

[0647] TRP sending antenna identification;

[0648] Antenna reference point identification;

[0649] Time information corresponding to HRTD;

[0650] Time information corresponding to RPD.

[0651] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0652] In some embodiments, the terminal 700 further includes:

[0653] A sending unit is used to send a second message to the first core network device; wherein, the second message carries the differential correction number type that the terminal expects the first core network device to provide.

[0654] In some embodiments, the first message further carries positioning assistance data;

[0655] or,

[0656] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0657] or,

[0658] The first message is used to request terminal capabilities.

[0659] In some embodiments, the processing unit 720 is further configured to:

[0660] Eliminate the phase deviation and / or timing deviation in the reference signal carrier phase difference RSCPD measurement value according to the first differential correction number to obtain a first RSCPD;

[0661] Perform positioning solution according to the first RSCPD.

[0662] It should be noted that the above-mentioned terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment on the above-mentioned terminal side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0663] As shown in FIG8 , an embodiment of the present disclosure provides a core network device, which includes a memory 81, a transceiver 82, and a processor 83. The memory 81 is used to store computer programs; the transceiver 82 is used to send and receive data under the control of the processor 83; for example, the transceiver 82 is used to receive and send data under the control of the processor 83; and the processor 83 is used to read the computer program in the memory 81 and perform the following operations:

[0664] Sending a first message to the terminal; wherein the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0665] High-resolution relative time deviation (HRTD) between the non-reference transceiver point TRP and the reference TRP;

[0666] Relative phase deviation RPD between non-reference TRP and reference TRP;

[0667] Time rate of change of HRTD;

[0668] The time rate of change of RPD.

[0669] In some embodiments, the first message further carries at least one of the following information:

[0670] TRP sends the timing error group identifier;

[0671] TRP sending antenna identification;

[0672] Antenna reference point identification;

[0673] Time information corresponding to HRTD;

[0674] Time information corresponding to RPD.

[0675] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein Tc =1 / (Δf mxx ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0676] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0677] A second message sent by a receiving terminal is received, wherein the second message carries the type of differential correction number that the terminal expects to provide.

[0678] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0679] The first differential correction number is determined.

[0680] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0681] Receiving a third message sent by one or more TRPs; wherein the third message carries a second differential correction number;

[0682] determining the first differential correction number according to the second differential correction number;

[0683] The second differential correction number includes at least one of the following:

[0684] HRTD of the TRP and the reference TRP;

[0685] RPD of the TRP and the reference TRP;

[0686] Time rate of change of HRTD;

[0687] The time rate of change of RPD.

[0688] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0689] Send a fourth message to one or more TRPs; wherein the fourth message is used to request a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0690] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0691] Receiving a fifth message sent by one or more positioning reference units (PRUs); wherein the fifth message carries a second differential correction number;

[0692] determining the first differential correction number according to the second differential correction number;

[0693] The second differential correction number includes at least one of the following:

[0694] HRTD of non-reference TRP and reference TRP;

[0695] RPD of non-reference TRP and reference TRP;

[0696] Time rate of change of HRTD;

[0697] The time rate of change of RPD.

[0698] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0699] If the second differential correction number is sent by a TRP or a PRU, determining the second differential correction number as the first differential correction number;

[0700] and / or,

[0701] If the second differential correction number is sent by multiple TRPs or multiple PRUs, the second differential correction number is averaged or combined to obtain the first differential correction number.

[0702] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0703] receiving a fifth message sent by one or more PRUs; wherein the fifth message carries a reference signal measurement quantity and a measurement quality indicator;

[0704] In a case where the measurement quality indicator satisfies the differential correction accuracy requirement, the first differential correction number is determined according to the reference signal measurement quantity.

[0705] In some embodiments, the reference signal measurement includes: a relative signal time difference of arrival RSTD measurement, and / or a reference signal carrier phase difference RSCPD measurement;

[0706] and / or,

[0707] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0708] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0709] Processing the reference signal measurement to obtain a second differential correction number;

[0710] If the reference signal measurement amount is sent by one PRU, the second differential correction number is determined as the first differential correction number; and / or, if the reference signal measurement amount is sent by multiple PRUs, the second differential correction numbers corresponding to the multiple PRUs are averaged or combined to obtain the first differential correction number.

[0711] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform at least one of the following operations:

[0712] HRTD is obtained by performing a differential operation on the RSTD measurement and the ideal RSTD value;

[0713] Perform a differential operation on the RSCPD measurement and the ideal RSCPD value to obtain the RPD;

[0714] Determine the time change rate of HRTD based on HRTD at different moments;

[0715] The time rate of change of the RPD is determined based on the RPD at different moments.

[0716] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0717] Send a sixth message to one or more PRUs; wherein the sixth message is used to request a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0718] In some embodiments, the first message further carries positioning assistance data;

[0719] or,

[0720] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0721] or,

[0722] The first message is used to request terminal capabilities.

[0723] In FIG8 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 83 and various circuits of memory represented by memory 81. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 82 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. The processor 83 is responsible for managing the bus architecture and general processing, and the memory 81 may store data used by the processor 83 when performing operations.

[0724] The processor 83 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). The processor may also adopt a multi-core architecture.

[0725] It should be noted here that the above-mentioned core network device provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment of the above-mentioned first core network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0726] As shown in FIG9 , an embodiment of the present disclosure provides a core network device 900, including:

[0727] The first sending unit 910 is configured to send a first message to the terminal, wherein the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0728] High-resolution relative time deviation (HRTD) between the non-reference transceiver point TRP and the reference TRP;

[0729] Relative phase deviation RPD between non-reference TRP and reference TRP;

[0730] Time rate of change of HRTD;

[0731] The time rate of change of RPD.

[0732] In some embodiments, the first message further carries at least one of the following information:

[0733] TRP sends the timing error group identifier;

[0734] TRP sending antenna identification;

[0735] Antenna reference point identification;

[0736] Time information corresponding to HRTD;

[0737] Time information corresponding to RPD.

[0738] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0739] In some embodiments, the core network device 900 further includes:

[0740] The first receiving unit is configured to receive a second message sent by a terminal; wherein the second message carries a differential correction number type that the terminal expects to provide.

[0741] In some embodiments, the core network device 900 further includes:

[0742] A determining unit is configured to determine the first differential correction number.

[0743] In some embodiments, the determining unit is further configured to:

[0744] Receiving a third message sent by one or more TRPs; wherein the third message carries a second differential correction number;

[0745] determining the first differential correction number according to the second differential correction number;

[0746] The second differential correction number includes at least one of the following:

[0747] HRTD of the TRP and the reference TRP;

[0748] RPD of the TRP and the reference TRP;

[0749] Time rate of change of HRTD;

[0750] The time rate of change of RPD.

[0751] In some embodiments, the core network device 900 further includes:

[0752] The second sending unit is used to send a fourth message to one or more TRPs; wherein the fourth message is used to request to obtain a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0753] In some embodiments, the determining unit is further configured to:

[0754] Receiving a fifth message sent by one or more positioning reference units (PRUs); wherein the fifth message carries a second differential correction number;

[0755] determining the first differential correction number according to the second differential correction number;

[0756] The second differential correction number includes at least one of the following:

[0757] HRTD of non-reference TRP and reference TRP;

[0758] RPD of non-reference TRP and reference TRP;

[0759] Time rate of change of HRTD;

[0760] The time rate of change of RPD.

[0761] In some embodiments, the determining unit is further configured to:

[0762] If the second differential correction number is sent by a TRP or a PRU, determining the second differential correction number as the first differential correction number;

[0763] and / or,

[0764] If the second differential correction number is sent by multiple TRPs or multiple PRUs, the second differential correction number is averaged or combined to obtain the first differential correction number.

[0765] In some embodiments, the determining unit is further configured to:

[0766] receiving a fifth message sent by one or more PRUs; wherein the fifth message carries a reference signal measurement quantity and a measurement quality indicator;

[0767] In a case where the measurement quality indicator satisfies the differential correction accuracy requirement, the first differential correction number is determined according to the reference signal measurement quantity.

[0768] In some embodiments, the reference signal measurement includes: a relative signal time difference of arrival RSTD measurement, and / or a reference signal carrier phase difference RSCPD measurement;

[0769] and / or,

[0770] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0771] In some embodiments, the determining unit is further configured to:

[0772] Processing the reference signal measurement to obtain a second differential correction number;

[0773] If the reference signal measurement amount is sent by one PRU, the second differential correction number is determined as the first differential correction number; and / or, if the reference signal measurement amount is sent by multiple PRUs, the second differential correction numbers corresponding to the multiple PRUs are averaged or combined to obtain the first differential correction number.

[0774] In some embodiments, the determining unit is further configured to:

[0775] HRTD is obtained by performing a differential operation on the RSTD measurement and the ideal RSTD value;

[0776] Perform a differential operation on the RSCPD measurement and the ideal RSCPD value to obtain the RPD;

[0777] Determine the time change rate of HRTD based on HRTD at different moments;

[0778] The time rate of change of the RPD is determined based on the RPD at different moments.

[0779] In some embodiments, the core network device 900 further includes:

[0780] The third sending unit is used to send a sixth message to one or more PRUs; wherein the sixth message is used to request to obtain a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0781] In some embodiments, the first message further carries positioning assistance data;

[0782] or,

[0783] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0784] or,

[0785] The first message is used to request terminal capabilities.

[0786] It should be noted that the above-mentioned core network device provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment of the above-mentioned first core network device side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0787] As shown in FIG10 , an embodiment of the present disclosure provides a transceiver point, which includes a memory 101, a transceiver 102, and a processor 103. The memory 101 is used to store computer programs; the transceiver 102 is used to send and receive data under the control of the processor 103; for example, the transceiver 102 is used to receive and send data under the control of the processor 103; and the processor 103 is used to read the computer program in the memory 101 and perform the following operations:

[0788] Sending a third message to the first core network device; wherein the third message carries the second differential correction number;

[0789] The second differential correction number includes at least one of the following:

[0790] A high-resolution relative time deviation (HRTD) between the TRP and a reference TRP;

[0791] A relative phase deviation RPD between the TRP and a reference TRP;

[0792] Time rate of change of HRTD;

[0793] The time rate of change of RPD.

[0794] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0795] In some embodiments, the processor 103 is configured to read the computer program in the memory 101 and perform the following operations:

[0796] Receive a fourth message sent by the first core network device; wherein the fourth message is used to request a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0797] In some embodiments, the processor 103 is configured to read the computer program in the memory 101 and perform the following operations:

[0798] Sending the third message to the first core network device in a periodic manner;

[0799] or,

[0800] If the first condition is met, sending the third message to the first core network device;

[0801] The first condition includes at least one of the following:

[0802] HRTD is greater than the first threshold;

[0803] RPD is greater than the second threshold;

[0804] The measurement quality indication of the relative signal arrival time difference RSTD is greater than the third threshold;

[0805] The measurement quality indicator of the reference signal carrier phase difference RSCPD is greater than a fourth threshold.

[0806] In FIG10 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 103 and memory represented by memory 101. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 102 may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 103 is responsible for managing the bus architecture and general processing, and the memory 101 may store data used by the processor 103 when performing operations.

[0807] In some embodiments, the processor 103 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0808] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0809] It should be noted here that the above-mentioned transceiver point provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment on the above-mentioned transceiver point side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0810] As shown in FIG11 , an embodiment of the present disclosure provides a transceiver point 1100, including:

[0811] The sending unit 1110 is configured to send a third message to the first core network device; wherein the third message carries a second differential correction number;

[0812] The second differential correction number includes at least one of the following:

[0813] High-resolution relative time deviation HRTD between the transmitting and receiving point TRP and the reference TRP;

[0814] A relative phase deviation RPD between the TRP and a reference TRP;

[0815] Time rate of change of HRTD;

[0816] The time rate of change of RPD.

[0817] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0818] In some embodiments, the transceiver point 1100 further includes:

[0819] A receiving unit is used to receive a fourth message sent by the first core network device; wherein the fourth message is used to request to obtain a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0820] In some embodiments, the sending unit 1110 is further configured to:

[0821] Sending the third message to the first core network device in a periodic manner;

[0822] or,

[0823] If the first condition is met, sending the third message to the first core network device;

[0824] The first condition includes at least one of the following:

[0825] HRTD is greater than the first threshold;

[0826] RPD is greater than the second threshold;

[0827] The measurement quality indication of the relative signal arrival time difference RSTD is greater than the third threshold;

[0828] The measurement quality indicator of the reference signal carrier phase difference RSCPD is greater than a fourth threshold.

[0829] It should be noted that the above-mentioned transceiver point provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment on the above-mentioned transceiver point side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0830] As shown in FIG12 , an embodiment of the present disclosure provides a positioning reference unit, which includes a memory 121, a transceiver 122, and a processor 123. The memory 121 is used to store computer programs; the transceiver 122 is used to send and receive data under the control of the processor 123; for example, the transceiver 122 is used to receive and send data under the control of the processor 123; and the processor 123 is used to read the computer program in the memory 121 and perform the following operations:

[0831] Sending a fifth message to the first core network device; wherein the fifth message carries the second differential correction number, or the fifth message carries the reference signal measurement amount and the measurement quality indication;

[0832] The second differential correction number includes at least one of the following:

[0833] High-resolution relative time deviation (HRTD) between the non-reference transceiver point TRP and the reference TRP;

[0834] The relative phase deviation RPD between the non-reference TRP and the reference TRP;

[0835] Time rate of change of HRTD;

[0836] The time rate of change of RPD.

[0837] In some embodiments, the reference signal measurement includes: a relative signal time difference of arrival RSTD measurement, and / or a reference signal carrier phase difference RSCPD measurement;

[0838] and / or,

[0839] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0840] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0841] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform the following operations:

[0842] Receive the sixth message sent by the first core network device; wherein the sixth message is used to request to obtain the first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0843] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform the following operations:

[0844] Measuring a positioning reference signal PRS sent by a TRP to obtain a reference signal measurement quantity and a measurement quality indicator;

[0845] Send a fifth message to the first core network device; wherein the fifth message carries the reference signal measurement value and the measurement quality indicator.

[0846] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform the following operations:

[0847] Measuring a positioning reference signal PRS sent by a TRP to obtain a reference signal measurement quantity and a measurement quality indicator;

[0848] When the measurement quality indicator satisfies the differential correction accuracy requirement, processing the reference signal measurement value to obtain the second differential correction number;

[0849] Send a fifth message to the first core network device; wherein the fifth message carries the second differential correction number.

[0850] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform at least one of the following operations:

[0851] HRTD is obtained by performing a differential operation on the RSTD measurement and the ideal RSTD value;

[0852] Perform a differential operation on the RSCPD measurement and the ideal RSCPD value to obtain the RPD;

[0853] Determine the time change rate of HRTD based on HRTD at different moments;

[0854] The time rate of change of the RPD is determined based on the RPD at different moments.

[0855] In FIG12 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 123 and memory represented by memory 121. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, all of which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 122 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like.

[0856] The processor 123 is responsible for managing the bus architecture and general processing, and the memory 121 can store data used by the processor 123 when performing operations.

[0857] In some embodiments, the processor 123 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0858] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0859] It should be noted here that the above-mentioned positioning reference unit provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment on the above-mentioned positioning reference unit side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0860] As shown in FIG13 , an embodiment of the present disclosure provides a positioning reference unit 1300 , including:

[0861] The sending unit 1310 is configured to send a fifth message to the first core network device; wherein the fifth message carries the second differential correction number, or the fifth message carries the reference signal measurement amount and the measurement quality indicator;

[0862] The second differential correction number includes at least one of the following:

[0863] High-resolution relative time deviation (HRTD) between the non-reference transceiver point TRP and the reference TRP;

[0864] The relative phase deviation RPD between the non-reference TRP and the reference TRP;

[0865] Time rate of change of HRTD;

[0866] The time rate of change of RPD.

[0867] In some embodiments, the reference signal measurement includes: a relative signal time difference of arrival RSTD measurement, and / or a reference signal carrier phase difference RSCPD measurement;

[0868] and / or,

[0869] The measurement quality indicator includes: a measurement quality indicator of RSTD and / or a measurement quality indicator of RSCPD.

[0870] In some embodiments, the granularity of the HRTD is smaller than that of Tc; wherein T c =1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the Fast Fourier Transform FFT.

[0871] In some embodiments, the positioning reference unit 1300 further includes:

[0872] A receiving unit is used to receive a sixth message sent by the first core network device; wherein the sixth message is used to request to obtain a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0873] In some embodiments, the sending unit 1310 is further configured to:

[0874] Measuring a positioning reference signal PRS sent by a TRP to obtain a reference signal measurement quantity and a measurement quality indicator;

[0875] Send a fifth message to the first core network device; wherein the fifth message carries the reference signal measurement value and the measurement quality indicator.

[0876] In some embodiments, the sending unit 1310 is further configured to:

[0877] Measuring a positioning reference signal PRS sent by a TRP to obtain a reference signal measurement quantity and a measurement quality indicator;

[0878] When the measurement quality indicator satisfies the differential correction accuracy requirement, processing the reference signal measurement value to obtain the second differential correction number;

[0879] Send a fifth message to the first core network device; wherein the fifth message carries the second differential correction number.

[0880] In some embodiments, the sending unit 1310 is further configured to:

[0881] HRTD is obtained by performing a differential operation on the RSTD measurement and the ideal RSTD value;

[0882] Perform a differential operation on the RSCPD measurement and the ideal RSCPD value to obtain the RPD;

[0883] Determine the time change rate of HRTD based on HRTD at different moments;

[0884] The time rate of change of the RPD is determined based on the RPD at different moments.

[0885] It should be noted here that the above-mentioned positioning reference unit provided in the embodiment of the present disclosure can implement all the method steps implemented in the information processing method embodiment on the above-mentioned positioning reference unit side, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0886] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0887] If the integrated unit is implemented 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 this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0888] An embodiment of the present disclosure also provides a processor-readable storage medium, which stores a computer program. The computer program is used to enable the processor to execute the steps of the above-mentioned information processing method and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0889] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as compact discs (CD), digital video discs (DVD), Blu-ray discs (BD), high-definition versatile discs (HVD), etc.), and semiconductor memory (such as read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid-state drives (SSD)), etc.

[0890] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0891] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0892] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0893] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0894] In addition, it should be noted that, in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it will be understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0895] It should be noted that it should be understood that the division of the above modules is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; or they can all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, a module can be a separately established processing element, or it can be integrated into a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called by a processing element of the above-mentioned device to perform the functions of the above-mentioned module. The implementation of other modules is similar. In addition, these modules can all or partly be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0896] For example, each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above method, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code through a processing element, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0897] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein may be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units need not be limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, for example, A and / or B and / or C, means that seven situations are included: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and all A, B, and C present. Similarly, the use of "at least one of A and B" in the specification and claims should be understood to mean "A alone, B alone, or both A and B present."

[0898] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. An information processing method, comprising: The terminal receives a first message sent by a first core network device; wherein, the first message carries a first differential correction number; The terminal performs positioning calculation according to the first differential correction number; Wherein, the first differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between a non-reference TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

2. The information processing method according to claim 1, wherein, The first message further carries at least one of the following information: The TRP transmission timing error group identifier; The TRP transmission antenna identifier; The antenna reference point identifier; The time information corresponding to the HRTD; The time information corresponding to the RPD.

3. The information processing method according to claim 1, wherein, The granularity of the HRTD is less than T c ; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform FFT.

4. The information processing method according to claim 1, wherein, Before the terminal receives the first message sent by the first core network device, it further includes: The terminal sends a second message to the first core network device; wherein, the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

5. The information processing method according to claim 1, wherein The first message further carries positioning assistance data; Or, The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number; Or, The first message is used to request the terminal capabilities.

6. The information processing method according to claim 1, wherein, The terminal performs positioning calculation according to the first differential correction number, including: The terminal eliminates the phase deviation and / or timing deviation in the reference signal carrier phase difference (RSCPD) measurement according to the first differential correction number to obtain a first RSCPD; The terminal performs positioning calculation according to the first RSCPD.

7. An information processing method, comprising: The first core network device sends a first message to the terminal; wherein, the first message carries a first differential correction number, and the first differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between a non-reference TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

8. The information processing method according to claim 7, wherein, The first message further carries at least one of the following information: The TRP transmission timing error group identifier; The TRP transmission antenna identifier; The antenna reference point identifier; The time information corresponding to the HRTD; The time information corresponding to the RPD.

9. The information processing method according to claim 7, wherein, The granularity of the HRTD is less than T c ; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform FFT.

10. The information processing method according to claim 7, wherein, Before the first core network device sends the first message to the terminal, it further includes: The first core network device receives a second message sent by the terminal; wherein, the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

11. The information processing method according to any one of claims 7 to 10, wherein, Before the first core network device sends the first message to the terminal, it further includes: The first core network device determines the first differential correction number.

12. The information processing method according to claim 11, wherein The first core network device determines the first differential correction number, including: The first core network device receives a third message sent by one or more TRPs; wherein, the third message carries a second differential correction number; The first core network device determines the first differential correction number according to the second differential correction number; Wherein, the second differential correction number includes at least one of the following: HRTD of the one or more TRPs and the reference TRP; RPD of the one or more TRPs and the reference TRP; Time change rate of the HRTD; Time change rate of the RPD.

13. The information processing method according to claim 12, wherein, Before the first core network device receives a third message sent by one or more TRPs, it further includes: The first core network device sends a fourth message to one or more TRPs; wherein, the fourth message is used to request to obtain the first differential correction number, and the fourth message carries relevant information of the reference TRP.

14. The information processing method according to claim 11, wherein, The first core network device determines the first differential correction number, including: The first core network device receives a fifth message sent by one or more positioning reference units (PRUs); wherein, the fifth message carries a second differential correction number; The first core network device determines the first differential correction number according to the second differential correction number; Wherein, the second differential correction number includes at least one of the following: HRTD between a non-reference TRP and the reference TRP; RPD between a non-reference TRP and the reference TRP; Time change rate of the HRTD; Time change rate of the RPD.

15. The information processing method according to claim 12 or 14, wherein, The first core network device determines the first differential correction number according to the second differential correction number, including: If the second differential correction number is sent by one TRP or one PRU, the first core network device determines the second differential correction number as the first differential correction number; and / or, If the second differential correction number is sent by multiple TRPs or multiple PRUs, the first core network device performs averaging or merging processing on the second differential correction number to obtain the first differential correction number.

16. The information processing method according to claim 11, wherein, The first core network device determines the first differential correction number, including: The first core network device receives a fifth message sent by one or more PRUs; wherein, the fifth message carries a reference signal measurement quantity and a measurement quality indication; When the measurement quality indication meets the differential correction accuracy requirement, the first core network device determines the first differential correction number according to the reference signal measurement quantity.

17. The information processing method according to claim 16, wherein, The reference signal measurement quantity includes: relative signal arrival time difference (RSTD) measurement quantity, and / or, reference signal carrier phase difference (RSCPD) measurement quantity; and / or, The measurement quality indication includes: measurement quality indication of the RSTD, and / or, measurement quality indication of the RSCPD.

18. The information processing method according to claim 16 or 17, wherein, The first core network device determines the first differential correction number according to the reference signal measurement quantity, including: The first core network device processes the reference signal measurement quantity to obtain a second differential correction number; If the reference signal measurement quantity is sent by one PRU, the first core network device determines the second differential correction number as the first differential correction number; and / or, if the reference signal measurement quantity is sent by multiple PRUs, the first core network device averages or merges the second differential correction numbers corresponding to the multiple PRUs to obtain the first differential correction number.

19. The information processing method according to claim 18, wherein, The first core network device processes the reference signal measurement quantity to obtain a second differential correction number, including at least one of the following: The first core network device performs a difference operation on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD; The first core network device performs a difference operation on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD; The first core network device determines the time change rate of HRTD according to HRTD at different times; The first core network device determines the time change rate of RPD according to RPD at different times.

20. The information processing method according to claim 14 or 16, wherein Before the first core network device receives the fifth message sent by one or more PRUs, it further includes: The first core network device sends a sixth message to one or more PRUs; wherein, the sixth message is used to request to obtain the first differential correction number, and the sixth message carries the relevant information of the reference TRP.

21. The information processing method according to claim 7, wherein, The first message further carries positioning assistance data; Or, The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number; Or, The first message is used to request terminal capabilities.

22. An information processing method, including: A transceiver point TRP sends a third message to a first core network device; wherein, the third message carries a second differential correction number; Wherein, the second differential correction number includes at least one of the following: The high-resolution relative time deviation HRTD between the TRP and the reference TRP; The relative phase deviation RPD between the TRP and the reference TRP; The time change rate of HRTD; The time change rate of RPD.

23. The information processing method according to claim 22, wherein, The granularity of the HRTD is less than T c ; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform FFT.

24. The information processing method according to claim 22, wherein, Before the transceiver point TRP sends the third message to the first core network device, it further includes: The TRP receives a fourth message sent by the first core network device; wherein, the fourth message is used to request to obtain the first differential correction number, and the fourth message carries the relevant information of the reference TRP.

25. The information processing method according to claim 22, wherein, The transceiver point TRP sending the third message to the first core network device includes: The TRP sends the third message to the first core network device in a periodic manner; Or, When a first condition is satisfied, the TRP sends the third message to the first core network device; Wherein, the first condition includes at least one of the following: HRTD is greater than a first threshold; RPD is greater than a second threshold; The measurement quality indication of the relative signal arrival time difference RSTD is greater than a third threshold; The measurement quality indication of the reference signal carrier phase difference RSCPD is greater than a fourth threshold.

26. An information processing method, including: A positioning reference unit PRU sends a fifth message to a first core network device; wherein, the fifth message carries a second differential correction number, or the fifth message carries a reference signal measurement quantity and a measurement quality indication; Wherein, the second differential correction number includes at least one of the following: The high-resolution relative time deviation HRTD between a non-reference transceiver point TRP and a reference TRP; The relative phase deviation RPD between a non-reference TRP and a reference TRP; The time change rate of HRTD; The time change rate of RPD.

27. The information processing method according to claim 26, wherein, The reference signal measurement quantity includes: the relative signal arrival time difference RSTD measurement quantity, and / or, the reference signal carrier phase difference RSCPD measurement quantity; And / or, The measurement quality indication includes: the measurement quality indication of RSTD, and / or the measurement quality indication of RSCPD.

28. The information processing method according to claim 26, wherein, The granularity of the HRTD is less than T c ; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform FFT.

29. The information processing method according to claim 26, wherein, Before the positioning reference unit PRU sends a fifth message to the first core network device, it further includes: The PRU receives a sixth message sent by the first core network device; wherein, the sixth message is used to request to obtain a first differential correction number, and the sixth message carries the relevant information of the reference TRP.

30. The information processing method according to claim 26 or 27, wherein, The positioning reference unit PRU sending a fifth message to the first core network device includes: The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication; The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement quantity and the measurement quality indication.

31. The information processing method according to claim 26 or 27, wherein, The positioning reference unit PRU sending a fifth message to the first core network device includes: The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication; When the measurement quality indication meets the differential correction accuracy requirement, the PRU processes the reference signal measurement quantity to obtain the second differential correction number; The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number.

32. The information processing method according to claim 31, wherein, The PRU processing the reference signal measurement quantity to obtain the second differential correction number includes at least one of the following: The PRU performs a difference operation on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD; The PRU performs a difference operation on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD; The PRU determines the time change rate of HRTD according to HRTD at different times; The PRU determines the time change rate of RPD according to RPD at different times.

33. A terminal, including a memory, a transceiver, and a processor; Among them, The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: Receive a first message sent by the first core network device; wherein, the first message carries a first differential correction number; Perform positioning calculation according to the first differential correction number; Wherein, the first differential correction number includes at least one of the following: The high-resolution relative time deviation HRTD between the non-reference transceiver point TRP and the reference TRP; The relative phase deviation RPD between the non-reference TRP and the reference TRP; The time change rate of HRTD; The time change rate of RPD.

34. The terminal according to claim 33, wherein, The first message further carries at least one of the following information: The TRP transmission timing error group identifier; The TRP transmission antenna identifier; The antenna reference point identifier; The time information corresponding to HRTD; The time information corresponding to RPD.

35. The terminal according to claim 33, wherein, The processor is used to read the computer programs in the memory and perform the following operations: Send a second message to the first core network device; wherein, the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

36. The terminal according to claim 33, wherein, The processor is used to read the computer program in the memory and perform the following operations: According to the first differential correction number, eliminate the phase deviation and / or timing deviation in the measurement of the reference signal carrier phase difference (RSCPD) to obtain the first RSCPD; Perform positioning calculation according to the first RSCPD.

37. A terminal, comprising: A receiving unit, configured to receive a first message sent by a first core network device; wherein, the first message carries a first differential correction number; A processing unit, configured to perform positioning calculation according to the first differential correction number; Wherein, the first differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between a non-reference TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

38. A core network device, comprising a memory, a transceiver, and a processor; Among them, The memory is used to store a computer program; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Send a first message to a terminal; wherein, the first message carries a first differential correction number, and the first differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between a non-reference TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

39. The core network device according to claim 38, wherein, The first message further carries at least one of the following information: TRP transmission timing error group identifier; TRP transmission antenna identifier; Antenna reference point identifier; Time information corresponding to the HRTD; Time information corresponding to the RPD.

40. The core network device according to claim 38, wherein, The processor is used to read the computer program in the memory and perform the following operations: Receive a second message sent by a terminal; wherein, the second message carries the type of differential correction number that the terminal expects to provide.

41. The core network device according to any one of claims 38 to 40, wherein, The processor is used to read the computer program in the memory and perform the following operations: Receive a third message sent by one or more TRPs; wherein, the third message carries a second differential correction number; Determine the first differential correction number according to the second differential correction number; Wherein, the second differential correction number includes at least one of the following: The HRTD between the one or more TRPs and the reference TRP; The RPD between the one or more TRPs and the reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

42. The core network device according to any one of claims 38 to 40, wherein, The processor is used to read the computer program in the memory and perform the following operations: Receive a fifth message sent by one or more positioning reference units (PRUs); wherein, the fifth message carries a second differential correction number; Determine the first differential correction number according to the second differential correction number; Wherein, the second differential correction number includes at least one of the following: The HRTD between a non-reference TRP and a reference TRP; The RPD between a non-reference TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

43. The core network device according to any one of claims 38 to 40, wherein, The processor is configured to read the computer program in the memory and perform the following operations: Receive a fifth message sent by one or more PRUs; wherein, the fifth message carries a reference signal measurement quantity and a measurement quality indication; When the measurement quality indication meets the differential correction accuracy requirement, determine the first differential correction number according to the reference signal measurement quantity.

44. A core network device, comprising: A first sending unit, configured to send a first message to a terminal; wherein, the first message carries a first differential correction number, and the first differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between a non-reference TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

45. A transceiver point, comprising a memory, a transceiver, and a processor; Among them, The memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; the processor is configured to read the computer program in the memory and perform the following operations: Send a third message to a first core network device; wherein, the third message carries a second differential correction number; Wherein, the second differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between the transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between the TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

46. The transceiver point according to claim 45, wherein, The processor is configured to read the computer program in the memory and perform the following operations: Send the third message to the first core network device in a periodic manner; Or, When a first condition is met, send the third message to the first core network device; Wherein, the first condition includes at least one of the following: The HRTD is greater than a first threshold; The RPD is greater than a second threshold; The measurement quality indication of the relative signal arrival time difference (RSTD) is greater than a third threshold; The measurement quality indication of the reference signal carrier phase difference (RSCPD) is greater than a fourth threshold.

47. A transceiver point, comprising: A sending unit, configured to send a third message to a first core network device; wherein, the third message carries a second differential correction number; Wherein, the second differential correction number includes at least one of the following: The high-resolution relative time deviation (HRTD) between the transceiver point (TRP) and a reference TRP; The relative phase deviation (RPD) between the TRP and a reference TRP; The time change rate of the HRTD; The time change rate of the RPD.

48. A positioning reference unit, comprising a memory, a transceiver, and a processor; Among them, The memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; the processor is configured to read the computer program in the memory and perform the following operations: Send a fifth message to a first core network device; wherein, the fifth message carries a second differential correction number, or the fifth message carries a reference signal measurement quantity and a measurement quality indication; Wherein, the second differential correction number includes at least one of the following: High-resolution relative time deviation (HRTD) between a non-reference transmission and reception point (TRP) and a reference TRP; Relative phase deviation (RPD) between a non-reference TRP and a reference TRP; Time change rate of the HRTD; Time change rate of the RPD.

49. The positioning reference unit according to claim 48, wherein, The processor is configured to read a computer program in the memory and perform the following operations: Measure a positioning reference signal (PRS) sent by a TRP to obtain the reference signal measurement and a measurement quality indication; Send a fifth message to a first core network device; wherein, the fifth message carries the reference signal measurement and the measurement quality indication.

50. The positioning reference unit according to claim 48, wherein, The processor is configured to read a computer program in the memory and perform the following operations: Measure a positioning reference signal (PRS) sent by a TRP to obtain the reference signal measurement and a measurement quality indication; When the measurement quality indication meets the differential correction accuracy requirement, process the reference signal measurement to obtain the second differential correction number; Send a fifth message to a first core network device; wherein, the fifth message carries the second differential correction number.

51. A positioning reference unit, comprising: A sending unit, configured to send a fifth message to a first core network device; wherein, the fifth message carries a second differential correction number, or the fifth message carries a reference signal measurement and a measurement quality indication; Wherein, the second differential correction number includes at least one of the following: High-resolution relative time deviation (HRTD) between a non-reference transmission and reception point (TRP) and a reference TRP; Relative phase deviation (RPD) between a non-reference TRP and a reference TRP; Time change rate of the HRTD; Time change rate of the RPD.

52. A processor-readable storage medium storing a computer program for causing the processor to perform the steps of the information processing method according to any one of claims 1 to 32.

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