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 methods, terminals, core network equipment and positioning reference units

[0001] This disclosure claims priority to Chinese Patent Application No. 202410052385.X, filed with the Chinese Patent Office on January 12, 2024, entitled "Information Processing Method, Terminal, Core Network Equipment and Positioning Reference Unit", the entire contents of which are incorporated herein by reference. Technical Field

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

[0003] Downlink positioning methods include: positioning methods based on downlink time difference of arrival (DL-TDOA) and positioning methods based on downlink angle-of-departure (DL-AoD). It supports using auxiliary data to notify the relative time difference (RTD) between different transmission and reception points (TRPs). However, the currently supported RTDs have a large granularity, which cannot meet the timing error accuracy requirements of carrier phase positioning (CPP). Furthermore, each RTD only represents the timing error between TRPs at a certain moment. For the target terminal, there may be a discrepancy between the RTD received and the RTD at the actual positioning time, leading to reduced positioning accuracy.

[0004] Another possible solution for achieving dual-differential functionality is for the Positioning Reference Unit (PRU) to directly report the reference signal measurements to the Location Management Function (LMF) network element, which then forwards them to the target terminal. This approach requires both the PRU and the target terminal to measure the downlink Positioning Reference Signal (PRS) within the same short time window. When the PRU needs to serve a large number of target terminals, this results in a heavy load on the PRU and significant signaling overhead. Summary of the Invention

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

[0006] Embodiments of this disclosure provide 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 calculation based on the first differential correction number;

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

[0010] High-accuracy relative time difference (HRTD) between non-reference TRP and reference TRP;

[0011] The relative phase difference (RPD) between the non-reference TRP and the reference TRP;

[0012] The rate of change of HRTD over time;

[0013] Rate of change of RPD over time.

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

[0015] TRP sends timing error group identifier;

[0016] TRP transmit antenna identifier;

[0017] Antenna reference point marking;

[0018] Time information corresponding to HRTD;

[0019] The 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 For the maximum subcarrier spacing, N f This represents the number of points in the Fast Fourier Transform (FFT).

[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 type of differential correction number that the terminal expects the first core network device to provide.

[0023] In some embodiments, the first message also carries location assistance data;

[0024] or,

[0025] The first message carries positioning assistance data, which 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 calculation based on the first differential correction number, including:

[0029] The terminal eliminates the phase deviation and / or timing deviation in the Reference Signal Carrier Phase Difference (RSCPD) measurement based on the first differential correction number to obtain the first RSCPD.

[0030] The terminal performs positioning calculations based on the first RSCPD.

[0031] This 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] Non-reference TRP and RPD of reference TRP;

[0035] The rate of change of HRTD over time;

[0036] Rate of change of RPD over time.

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

[0038] TRP sends timing error group identifier;

[0039] TRP transmit antenna identifier;

[0040] Antenna reference point marking;

[0041] Time information corresponding to HRTD;

[0042] The 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 For the maximum subcarrier spacing, N f The number of points in the FFT.

[0044] In some embodiments, before the first core network device sends the first message to the terminal, it 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, it 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 based on the second differential correction number;

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

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

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

[0054] The rate of change of HRTD over time;

[0055] Rate of change of RPD over time.

[0056] In some embodiments, before the first core network device receives a 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 the acquisition of 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 based on the second differential correction number;

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

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

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

[0064] The rate of change of HRTD over time;

[0065] Rate of change of RPD over time.

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

[0067] If the second differential correction number is sent by a TRP or a PRU, then the first core network device will determine 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 quantity and a measurement quality indication;

[0072] If the measurement quality indication meets the differential correction accuracy requirements, the first core network device determines the first differential correction number based on the reference signal measurement.

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

[0074] And / or,

[0075] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication of RSCPD.

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

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

[0078] If the reference signal measurement is sent by a single 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 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.

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

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

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

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

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

[0084] In some embodiments, before the first core network device receives a 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 the acquisition of the first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0086] In some embodiments, the first message also carries location assistance data;

[0087] or,

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

[0089] or,

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

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

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

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

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

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

[0096] The rate of change of HRTD over time;

[0097] Rate of change of RPD over time.

[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 For the maximum subcarrier spacing, N f The number of points in the FFT.

[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 the acquisition of the 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 sends the third message to the first core network device in a periodic manner;

[0103] or,

[0104] If 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's measurement quality indication is greater than the third threshold;

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

[0110] This 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 a second differential correction number, or the fifth message carries a reference signal measurement quantity and a measurement quality indication;

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

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

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

[0115] The rate of change of HRTD over time;

[0116] Rate of change of RPD over time.

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

[0118] And / or,

[0119] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication of RSCPD.

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

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

[0122] The PRU receives a sixth message sent by the first core network device; wherein the sixth message is used to request the acquisition of the 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 quantity and measurement quality indication;

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

[0128] If the measurement quality indication meets the differential correction accuracy requirements, the PRU processes the reference signal measurement 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 difference operation between the RSTD measurement and the ideal RSTD value to obtain the HRTD;

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

[0133] The PRU determines the rate of change of HRTD over time based on HRTD at different times;

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

[0135] This disclosure provides a terminal, including a memory, a transceiver, and a processor;

[0136] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

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

[0138] Based on the first differential correction number, the positioning solution is performed;

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

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

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

[0142] The rate of change of HRTD over time;

[0143] Rate of change of RPD over time.

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

[0145] TRP sends timing error group identifier;

[0146] TRP transmit antenna identifier;

[0147] Antenna reference point marking;

[0148] Time information corresponding to HRTD;

[0149] The time information corresponding to RPD.

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

[0151] 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.

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

[0153] Based on the first differential correction number, the phase deviation and / or timing deviation in the RSCPD measurement of the reference signal carrier phase difference are eliminated to obtain the first RSCPD.

[0154] Based on the first RSCPD, the location is calculated.

[0155] This application provides a terminal, including:

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

[0157] The processing unit is used to perform positioning calculations based on the first differential correction number;

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

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

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

[0161] The rate of change of HRTD over time;

[0162] Rate of change of RPD over time.

[0163] This disclosure provides a core network device, including a memory, a transceiver, and a processor;

[0164] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

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

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

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

[0168] The rate of change of HRTD over time;

[0169] Rate of change of RPD over time.

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

[0171] TRP sends timing error group identifier;

[0172] TRP transmit antenna identifier;

[0173] Antenna reference point marking;

[0174] Time information corresponding to HRTD;

[0175] The time information corresponding to RPD.

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

[0177] The receiving terminal sends a second message; 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 a computer program from the memory and perform the following operations:

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

[0180] The first differential correction number is determined based on the second differential correction number;

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

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

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

[0184] The rate of change of HRTD over time;

[0185] Rate of change of RPD over time.

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

[0187] Receive a fifth message sent by one or more Positioning Reference Units (PRUs); wherein the fifth message carries a second differential correction number;

[0188] The first differential correction number is determined based on the second differential correction number;

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

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

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

[0192] The rate of change of HRTD over time;

[0193] Rate of change of RPD over time.

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

[0195] 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;

[0196] If the measurement quality indication meets the differential correction accuracy requirements, the first differential correction number is determined based on the measured value of the reference signal.

[0197] This 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] Non-reference TRP and RPD of reference TRP;

[0201] The rate of change of HRTD over time;

[0202] Rate of change of RPD over time.

[0203] This disclosure provides a transceiver point, including a memory, a transceiver, and a processor;

[0204] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

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

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

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

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

[0209] The rate of change of HRTD over time;

[0210] Rate of change of RPD over time.

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

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

[0213] or,

[0214] If the first condition is met, the third message is sent 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's measurement quality indication is greater than the third threshold;

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

[0220] This disclosure provides a transceiver point, including:

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

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

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

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

[0225] The rate of change of HRTD over time;

[0226] Rate of change of RPD over time.

[0227] This disclosure provides a positioning reference unit, including a memory, a transceiver, and a processor;

[0228] The memory stores computer programs; the transceiver, under the control of the processor, sends and receives data; the processor reads the computer programs from the memory and performs the following operations:

[0229] Send a fifth message to the 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;

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

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

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

[0233] The rate of change of HRTD over time;

[0234] Rate of change of RPD over time.

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

[0236] The PRS transmitted by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication;

[0237] A fifth message is sent to the first core network device; wherein the fifth message carries the reference signal measurement quantity and measurement quality indication.

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

[0239] The PRS transmitted by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication;

[0240] If the measurement quality indication meets the differential correction accuracy requirements, the reference signal measurement is processed to obtain the second differential correction number;

[0241] A fifth message is sent to the first core network device; wherein the fifth message carries the second differential correction number.

[0242] This disclosure provides a positioning reference unit, including:

[0243] The sending unit is used to send a fifth message to the 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;

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

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

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

[0247] The rate of change of HRTD over time;

[0248] Rate of change of RPD over time.

[0249] This disclosure provides a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the information processing method described above.

[0250] The beneficial effects of the above-mentioned technical solution disclosed herein are:

[0251] In this embodiment, the terminal receives a first message sent by a first core network device. The first message carries at least one of the following "first differential correction number": 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. This allows the terminal to eliminate timing deviations in measurements based on the HRTD, ensuring the timing deviation accuracy meets the positioning strategy requirements. The terminal can also determine the RTD at the actual positioning time based on the time change rate of the HRTD, ensuring positioning accuracy. Furthermore, the terminal can implement dual differential functionality based on the RPD and / or the time change rate of the RPD, reducing the increased PRU load and signaling overhead caused by the terminal obtaining reference signal measurements through air interface signaling to determine phase and / or timing deviations. This solves the problems of poor positioning accuracy and high PRU load and signaling overhead in current positioning methods. Attached Figure Description

[0252] Figure 1 is a flowchart of an information processing method on the terminal side according to an embodiment of the present disclosure;

[0253] Figure 2 is a flowchart of an information processing method on the first core network device side according to an embodiment of the present disclosure;

[0254] Figure 3 is a flowchart of an information processing method at the transceiver point side according to an embodiment of the present disclosure;

[0255] Figure 4 is a flowchart of an information processing method on the positioning reference unit side according to an embodiment of the present disclosure;

[0256] Figure 5 shows an interactive flowchart of the information processing method according to an embodiment of the present disclosure;

[0257] Figure 6 shows a block diagram of one of the terminals according to an embodiment of the present disclosure;

[0258] Figure 7 shows a second block diagram of a terminal according to an embodiment of this disclosure;

[0259] Figure 8 shows a block diagram of one of the first core network devices according to an embodiment of the present disclosure;

[0260] Figure 9 shows a second block diagram of the first core network device according to an embodiment of the present disclosure;

[0261] Figure 10 shows a block diagram of one of the transceiver points according to an embodiment of the present disclosure;

[0262] Figure 11 shows a second block diagram of a transceiver point according to an embodiment of this disclosure;

[0263] Figure 12 shows a block diagram of one of the positioning reference units according to an embodiment of the present disclosure;

[0264] Figure 13 shows a second block diagram of the positioning reference unit according to an embodiment of the present disclosure. Detailed Implementation

[0265] To make the technical problems, solutions, and advantages of this disclosure clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this disclosure. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0266] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a particular feature, structure, or characteristic relating to an embodiment is included in at least one embodiment of this disclosure. Therefore, "in one embodiment" or "one embodiment" appearing throughout the specification does 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 this disclosure, it should be understood that the sequence number of each process described below does not imply 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 this disclosure.

[0268] In addition, the terms "system" and "network" are often used interchangeably in this article.

[0269] The technical solutions provided in this disclosure are applicable to a variety of systems, especially 5G systems. For example, applicable systems may include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The system may also include a core network component, such as an evolved packet system (EPS) or a 5G system (5GS).

[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 Multiple User MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0271] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0272] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0273] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0274] The following describes the relevant technologies involved in this disclosure:

[0275] 1. Currently, LMF supports using RTD to notify the target user equipment (UE) of the timing deviation between different TRPs. However, the granularity of the RTD information (NR-RTD-Info) defined by the current 5G New Radio (NR) system is as follows:

[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 in the Fast Fourier Transform (FFT).

[0277] Table 1 shows the auxiliary data required for UE-based DL-TDOA and / or DL-AoD positioning methods.

[0278] Table 1: Mapping of posSibType to assistanceDataElement

[0279] For example, regarding 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", then IE NR-UEB-TRP-RTD-Info is used in the assistanceDataElement if the posSibType in IE PosSIB-Type indicates 'posSibType6-3', as shown in the following code:

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

[0281] The location server uses the IE NR-RTD-Info information to provide time synchronization information between a reference TRP and a list of neighboring TRPs (or non-reference 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 neighbor 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 neighbor TRP.

[0284] This disclosure provides 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, high PRU load, and high signaling overhead in current positioning methods. The method and terminal (or core network device, transceiver point, or positioning reference unit) are based on the same concept. Since the principles underlying the problem-solving of the method and terminal (or core network device, transceiver point, or positioning reference unit) are similar, their implementations can be mutually referenced, and repeated details will not be elaborated further.

[0285] As shown in Figure 1, an embodiment of this disclosure provides an information processing method, including 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] Wherein, the first differential correction number includes at least one of the following:

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

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

[0290] The rate of change of HRTD over time;

[0291] Rate of change of RPD over time.

[0292] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments disclosed herein are not limited thereto.

[0293] In some embodiments, the first differential correction number may be provided by the TRP or PRU, or determined by the first core network device based on the data provided by the TRP or PRU. The following will describe in detail the embodiments on the first core network device side, but the embodiments disclosed herein are not limited thereto.

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

[0295] For example, the terminal can eliminate the phase deviation and / or timing deviation of the measured quantity based on the first differential correction number, and perform positioning calculation based on the measured quantity 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": 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. This allows the terminal to eliminate timing deviations in measurements based on the HRTD, ensuring the timing deviation accuracy required by the positioning strategy. The terminal can also determine the RTD at the actual positioning time based on the time change rate of the HRTD, ensuring positioning accuracy. Furthermore, the terminal can implement dual differential functionality based on the RPD and / or the time change rate of the RPD, reducing the increased PRU load and signaling overhead caused by the terminal obtaining reference signal measurements through air interface signaling to determine phase and / or timing deviations. This solves the problems of poor positioning accuracy and high PRU load and signaling overhead in current positioning methods.

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

[0298] TRP sends a Timing Error Group ID (TEG ID);

[0299] TRP transmit antenna identifier;

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

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

[0302] The time information corresponding to the RPD; for example, the time information can be the time corresponding to the RPD, that is, the time 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 For the maximum subcarrier spacing, Nf This represents the number of points in the Fast Fourier Transform (FFT).

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

[0305] For example: N f The range of values ​​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 type of differential correction number that the terminal expects the first core network device to provide.

[0308] For example, the second message can be a location request message, or it can be any other message. For instance, taking the CPP location method as an example, the second message can be called a UE-based NR CPP location request message, but this disclosure is not limited to this.

[0309] In this embodiment, the terminal can inform the first core network device of the type of differential correction number it expects the first core network device to provide, or in other words, the type of differential correction number the terminal needs or wants the first core network device to provide. That is, the terminal can request the first core network device to provide which type or types of differential correction number. The first core network device can then send the first message to the terminal based on the type of differential correction number the terminal expects, needs, or requests.

[0310] For example, differential correction number types include, but are not limited to, at least one of HRTD, RPD, the time change rate of HRTD, and the time change rate of RPD. For instance, if a terminal informs a first core network device via a second message that it expects, needs, or requests the first core network device to provide differential correction number types of HRTD and HRTD's time change rate, then the first core network device may carry the values ​​of HRTD and HRTD's time change rate in the first message sent to the terminal. Of course, this embodiment is 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 in an aperiodic manner, etc., and the embodiments disclosed herein are not limited thereto.

[0312] In some embodiments, the first core network device sends the first message to the terminal, which may be done by sending a newly defined message separately. For example, taking the CPP positioning method as an example, the first message may be called the NR CPP differential correction number message, or other messages, etc. The embodiments disclosed herein are not limited thereto.

[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 a message for sending positioning assistance data to carry the first differential correction number. For instance, the first differential correction number can be sent together with the positioning assistance data, meaning the first message carries both the first differential correction number and the positioning assistance data. Alternatively, the first differential correction number can be added to the positioning assistance data, meaning the first message carries positioning assistance data including the first differential correction number. For example, in a UE-based positioning method, this positioning assistance data is also known as UE-based positioning assistance data.

[0314] For example, the first core network device can reuse the message 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 calculation based on the first differential correction number, including:

[0316] The terminal eliminates phase and / or timing deviations in the RSCPD measurement based on the first differential correction number to obtain the first RSCPD.

[0317] The terminal performs positioning calculations based on the first RSCPD.

[0318] For example, the terminal can eliminate timing deviations in RSCPD measurements based on the HRTD and / or the time change rate of the non-reference TRP and the reference TRP, and / or the terminal can eliminate phase deviations in RSCPD measurements based on the RPD and / or the time change rate of the non-reference TRP and the reference TRP, thereby improving positioning accuracy.

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

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

[0321] Here, "expected" can be understood as the type of differential correction number 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 the terminal requests the first core network device to provide. For example, the differential correction number type includes, but is not limited to, at least one of HRTD, RPD, the time change rate of HRTD, and the time change rate of RPD. For instance, if the terminal informs the first core network device through a second message that it expects, needs, or requests the first core network device to provide differential correction number types of 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, this embodiment of the present disclosure is not limited to this.

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

[0323] The terminals disclosed in this embodiment can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminals may differ in different systems; for example, in a 5G system, a terminal may be called User Equipment (UE). Wireless terminals can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminals can be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments disclosed herein.

[0324] As shown in Figure 2, an embodiment of this disclosure provides an information processing method, including 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] Non-reference TRP and RPD of reference TRP;

[0328] The rate of change of HRTD over time;

[0329] Rate of change of RPD over time.

[0330] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments disclosed herein are not limited thereto.

[0331] In some embodiments, the first differential correction number may be provided by the TRP or PRU, or determined by the first core network device based on the data provided by the TRP or PRU. The following will describe the embodiments in detail, but the embodiments disclosed herein are not limited thereto.

[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": 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. This allows the terminal to eliminate timing deviations in measurements based on the HRTD, ensuring the timing deviation accuracy required by the positioning strategy. The terminal can also determine the RTD at the actual positioning time based on the time change rate of the HRTD, ensuring positioning accuracy. Furthermore, the terminal can implement dual differential functionality based on the RPD and / or the time change rate of the RPD, reducing 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 and high PRU load and signaling overhead in current positioning methods.

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

[0334] TRP sends 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] The time information corresponding to HRTD; for example, this time information can be the time corresponding to HRTD, that is, the time corresponding to HRTD included in the first differential correction number;

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

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

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

[0341] For example: N f The range of values ​​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, it 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 can be a location request message, or it can be any other message. For instance, taking the CPP location method as an example, the second message can be called a UE-based NR CPP location request message, but this disclosure is not limited to this.

[0345] In this embodiment, the terminal can inform the first core network device of the type of differential correction number it expects the first core network device to provide, or in other words, the type of differential correction number the terminal needs or wants the first core network device to provide. That is, the terminal can request the first core network device to provide which type or types of differential correction number. The first core network device can then send the first message to the terminal based on the type of differential correction number the terminal expects, needs, or requests.

[0346] For example, differential correction number types include, but are not limited to, at least one of HRTD, RPD, the time change rate of HRTD, and the time change rate of RPD. For instance, if a terminal informs a first core network device via a second message that it expects, needs, or requests the first core network device to provide differential correction number types of HRTD and HRTD's time change rate, then the first core network device may carry the values ​​of HRTD and HRTD's time change rate in the first message sent to the terminal. Of course, this embodiment is 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 in an aperiodic manner, etc., and the embodiments disclosed herein are not limited thereto.

[0348] In some embodiments, the first core network device sends the first message to the terminal, which may be done by sending a newly defined message separately. For example, taking the CPP positioning method as an example, the first message may be called the NR CPP differential correction number message, or other messages, etc. The embodiments disclosed herein are not limited thereto.

[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 a message for sending positioning assistance data to carry the first differential correction number. For instance, the first differential correction number can be sent together with the positioning assistance data, meaning the first message carries both the first differential correction number and the positioning assistance data. Alternatively, the first differential correction number can be added to the positioning assistance data, meaning the first message carries positioning assistance data including the first differential correction number. For example, in a UE-based positioning method, this positioning assistance data is also known as UE-based positioning assistance data.

[0350] For example, the first core network device can reuse the message 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, where the first differential correction number is determined by the first core network device based on data provided by the TRP or PRU, that is, before the first core network device sends the first message to the terminal, the method further includes: the first core network device determining the first differential correction number.

[0352] One implementation method is to determine the first differential correction number based on direct reporting from 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 based on the second differential correction number;

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

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

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

[0359] The rate of change of HRTD over time;

[0360] Rate of change of RPD over time.

[0361] In some embodiments, the first core network device obtains the second differential correction number from one or more TRPs, which may be done periodically or all at once. 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 a first condition is met.

[0362] For example, one or more TRPs can each calculate a second differential correction number relative to a reference TRP and report it to the first core network device. Specifically, one or more TRPs can calculate the second differential correction number based on pre-saved known information, or they can calculate the second differential correction number based on information obtained by measuring the PRS sent between TRPs, etc. The embodiments disclosed herein are not limited thereto.

[0363] Specifically, for periodic reporting of the second differential correction value, the reporting period for the second differential correction value can be defined and configured. For reporting of the second differential correction value when the first condition is met, reporting thresholds for the second differential correction value and / or measurement quality indication can be defined and configured; that is, if a certain threshold is exceeded, the TRP reports the second differential correction value; otherwise, the TRP does not report the second differential correction value.

[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's measurement quality indication is greater than the third threshold;

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

[0369] In some embodiments, before the first core network device receives a 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 the acquisition of 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 can send a fourth message to one or more TRPs to request one or more TRPs to provide a first differential correction number. In this way, one or more TRPs can send a second differential correction number to the first core network device based on the request. For example, taking the CPP positioning method as an example, this fourth message can be called an NR CPP differential correction number request message, or it can be other messages; this embodiment is not limited to these.

[0372] In some embodiments, a 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 based on the second differential correction number, including:

[0374] If the second differential correction number is sent by a TRP, then the first core network device will determine 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, when 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, this second differential correction number is the first differential correction number that the first core network device needs to provide to the terminal.

[0378] For example, when the first core network device receives second differential correction values ​​from multiple TRPs, or in other words, when multiple TRPs send second differential correction values, the first core network device needs to further process the second differential correction values ​​sent by the multiple TRPs to obtain the first differential correction value. For example, the first core network device may average or merge the second differential correction values ​​sent by the multiple TRPs to obtain the first differential correction value.

[0379] It should be noted that the averaging or merging of the second differential correction values ​​sent by multiple TRPs by the first core network device refers to averaging or merging the second differential correction values ​​of the same non-reference TRP relative to the reference TRP. For example, the first core network device may perform averaging or merging of the second differential correction values ​​of TRP 1 relative to the reference TRP sent by multiple TRPs.

[0380] As another implementation method: the first differential correction number is determined based on the direct reporting of 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 based on the second differential correction number;

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

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

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

[0387] The rate of change of HRTD over time;

[0388] Rate of change of RPD over time.

[0389] In some embodiments, the first core network device obtains the second differential correction number from one or more PRUs, which may be obtained periodically or all at once.

[0390] For example, one or more PRUs measure downlink PRS from different TRPs within the same time window to obtain reference signal measurements and measurement quality indicators. The reference signal measurements include RSTD measurements and / or RSCPD measurements; 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 measurements meets the accuracy requirements of the differential correction factor. If it does, the PRU performs a differential operation between the RSTD measurement and the ideal value of RSTD to obtain the HRTD, and / or performs a differential operation between the RSCPD measurement and the ideal value of RSCPD to obtain the RPD. Alternatively, the PRU can also obtain the time change rate of HRTD and / or RPD from the RTD and / or RPD at different times, i.e., obtain the second differential correction factor. If the requirements are not met, the PRU discards the current RSTD and RSCPD measurements.

[0391] In some embodiments, before the first core network device receives a 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 the acquisition of the first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0393] In this embodiment, the first core network device can send a sixth message to one or more PRUs to request one or more PRUs to provide a first differential correction number. In this way, one or more PRUs can send a second differential correction number to the first core network device based on the request. For example, taking the CPP positioning method as an example, this sixth message can be called an NR CPP differential correction number request message, or it can be other messages; this embodiment is not limited to these.

[0394] In some embodiments, a 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 based on the second differential correction number, including:

[0396] If the second differential correction number is sent by a TRP or a PRU, then the first core network device will determine 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, when 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, this second differential correction number is the first differential correction number that the first core network device needs to provide to the terminal.

[0400] For example, when the first core network device receives second differential correction values ​​from multiple PRUs, or in other words, when multiple PRUs send second differential correction values, the first core network device needs to further process the second differential correction values ​​sent by the multiple PRUs to obtain the first differential correction value. For example, the first core network device may average or merge the second differential correction values ​​sent by the multiple PRUs to obtain the first differential correction value.

[0401] It should be noted that the averaging or merging of the second differential correction values ​​sent by multiple PRUs by the first core network equipment refers to averaging or merging the second differential correction values ​​of the same non-reference TRP relative to the reference TRP. For example, the first core network equipment may perform averaging or merging of the second differential correction values ​​of TRP 1 sent by multiple PRUs relative to the reference TRP.

[0402] As another implementation method: the first differential correction number is determined based on the indirect reporting of 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 quantity and a measurement quality indication;

[0405] If the measurement quality indication meets the differential correction accuracy requirements, the first core network device determines the first differential correction number based on the reference signal measurement.

[0406] In some embodiments, the first core network device obtains reference signal measurements and measurement quality indications from one or more PRUs, which may be acquired periodically or all at once.

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

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

[0409] For example, the first core network device receives reference signal measurements and measurement quality indications from one or more PRUs. It then uses the measurement quality indications to determine whether the quality of the current RSTD and RSCPD measurements meets the accuracy requirements of the differential correction number. If it does, the first core network device determines the first differential correction number based on the reference signal measurements. Alternatively, if it does not meet the requirements, the RSTD and RSCPD measurements are discarded.

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

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

[0412] If the reference signal measurement is sent by a single 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 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.

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

[0414] For example, when the first core network device receives reference signal measurements from multiple PRUs, or in other words, when multiple PRUs send reference signal measurements, the first core network device needs to process the reference signal measurements from the multiple PRUs to obtain a second differential correction value, and then further process it to obtain a first differential correction value. For example, the first core network device can average or combine the second differential correction values ​​obtained from the processing of the reference signal measurements from the multiple PRUs to obtain the first differential correction value.

[0415] It should be noted that the averaging or merging of the second differential correction values ​​obtained by the first core network equipment from processing reference signal measurements transmitted by multiple PRUs refers to averaging or merging the second differential correction values ​​of the same non-reference TRP relative to the reference TRP. For example, the first core network equipment may average or merge the second differential correction values ​​of TRP 1 relative to the reference TRP obtained from processing reference signal measurements transmitted by multiple PRUs.

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

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

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

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

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

[0421] For example: The first core network device receives reference signal measurements and measurement quality indicators from one or more PRUs. If the quality of the current RSTD measurement meets the accuracy requirements of the differential correction factor (DCF), it performs a differential operation between the RSTD measurement and the ideal RSTD value to obtain the HRTD, and / or determines the time rate of change of the HRTD based on the HRTD at different times. Alternatively, if the accuracy requirements of the DCF are not met, the RSTD measurement is discarded.

[0422] For example, the first core network device receives reference signal measurements and measurement quality indicators from one or more PRUs. If the quality of the current RSCPD measurement meets the accuracy requirements of the differential correction number (RCD), it performs a differential operation between the RSCPD measurement and the ideal RSCPD value to obtain the RPD, and / or determines the time rate of change of the RPD based on the RPD at different times. Alternatively, if the accuracy requirements of the RPD are not met, the RSCPD measurement is discarded.

[0423] In some embodiments, before the first core network device receives a 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 the acquisition of the first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0425] In this embodiment, the first core network device can send a sixth message to one or more PRUs to request one or more PRUs to provide a first differential correction number. In this way, one or more PRUs can send a second differential correction number to the first core network device based on the request. For example, taking the CPP positioning method as an example, this sixth message can be called an NR CPP differential correction number request message, or it can be other messages; this embodiment is not limited to these.

[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 section explains the information processing process of the LMF, taking the first core network device as an example:

[0428] Step 1: The LMF receives a "UE-based NR CPP" location request message (i.e., the second message) sent by the target terminal (UE). This location request message contains the "NR CPP differential correction number" (i.e., differential correction number type) that the target UE expects the LMF to provide.

[0429] Here, "expected" can be understood as the type of differential correction number 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 the terminal requests the first core network device to provide. For example, the differential correction number type includes, but is not limited to, at least one of HRTD, RPD, the time change rate of HRTD, and the time change rate of RPD. For instance, if the terminal informs the first core network device through a second message that it expects, needs, or requests the first core network device to provide differential correction number types of 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, this embodiment of the present disclosure is 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), wherein the request message contains relevant 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: The LMF obtains the first differential correction number using one of the following three methods.

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

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

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

[0435] The rate of change of HRTD over time;

[0436] Rate of change of RPD over time.

[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] The second differential correction value reported by multiple TRPs can be calculated based on pre-saved known information or on information obtained from measurements using PRS (Presentation Records) sent between TRPs. The reporting methods for the second differential correction value include periodic reporting and / or aperiodic reporting. For periodic reporting, the reporting period for the second differential correction value needs to be defined and configured. For aperiodic reporting, reporting thresholds for the second differential correction value and / or the measurement quality indication can be defined and configured; that is, when the second differential correction value and / or the measurement quality indication exceed a certain threshold, the TRP reports the second differential correction value; otherwise, the TRP does not report the second differential correction value.

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

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

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

[0442] The first message from LMF to the target UE regarding the first differential correction number can be carried via UE-based positioning assistance data, a message sending UE-based positioning assistance data, a positioning request message, or a newly defined message. For example, this first message can be broadcast, unicast, or multicast. This first message can be periodic or aperiodic.

[0443] As shown in Figure 3, an embodiment of this disclosure provides an information processing method, including the following steps:

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

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

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

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

[0448] The rate of change of HRTD over time;

[0449] Rate of change of RPD over time.

[0450] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments disclosed herein are not limited thereto.

[0451] In some embodiments, the second differential correction number reported by TRP to the first core network device is used to determine the first differential correction number. For details, please refer to the embodiments 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 For the maximum subcarrier spacing, N f The number of points in the FFT.

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

[0454] For example: N f The range of values ​​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, it further includes:

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

[0457] In this embodiment, the first core network device can send a fourth message to one or more TRPs to request one or more TRPs to provide a first differential correction number. In this way, one or more TRPs can send a second differential correction number to the first core network device based on the request. For example, taking the CPP positioning method as an example, this fourth message can be called an NR CPP differential correction number request message, or it can be other messages; this embodiment is not limited to these.

[0458] In some embodiments, the Transceiver Point (TRP) sends a third message to the first core network device, including:

[0459] The TRP sends the third message to the first core network device in a periodic manner;

[0460] or,

[0461] If 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's measurement quality indication is greater than the third threshold;

[0466] The measurement quality indication of RSCPD is greater than the 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 done periodically or all at once. In other words, one or more TRPs can report the second differential correction number periodically, or one or more TRPs can report the second differential correction number when a first condition is met.

[0468] For example, one or more TRPs can each calculate a second differential correction number relative to a reference TRP and report it to the first core network device. Specifically, one or more TRPs can calculate the second differential correction number based on pre-saved known information, or they can calculate the second differential correction number based on information obtained by measuring the PRS sent between TRPs, etc. The embodiments disclosed herein are not limited thereto.

[0469] Specifically, for periodic reporting of the second differential correction value, the reporting period for the second differential correction value can be defined and configured. For reporting of the second differential correction value when the first condition is met, reporting thresholds for the second differential correction value and / or measurement quality indication can be defined and configured; that is, if a certain threshold is exceeded, the TRP reports the second differential correction value; otherwise, the TRP does not report the second differential correction value.

[0470] In this embodiment, the TRP sends a third message carrying a second differential correction number to the 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 the terminal. The first message carries at least one of the following "first differential correction number": 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. This allows the terminal to eliminate timing deviations in measurements based on the HRTD, ensuring the timing deviation accuracy meets the positioning strategy requirements. The terminal can also determine the RTD at the actual positioning time based on the time change rate of the HRTD, ensuring positioning accuracy. Furthermore, the terminal can implement dual differential functionality based on the RPD and / or the time change rate of the RPD, reducing the increased PRU load and signaling overhead caused by the terminal obtaining reference signal measurements through air interface signaling to determine phase and / or timing deviations. This solves the problems of poor positioning accuracy and high PRU load and signaling overhead in current positioning methods.

[0471] The following describes the process of PRU execution information processing:

[0472] Step 1: The TRP receives a "First Differential Correction Request" message (i.e., the fourth message) from the LMF and calculates the second differential correction. This request message contains relevant information about the reference TRP. Multiple TRPs can calculate the second differential correction based on pre-saved known information or information obtained from measurements of PRS signals sent to each other.

[0473] Step 2: TRP reports the second differential correction value to LMF directly. The reporting method for the second differential correction value includes periodic reporting and / or aperiodic reporting. For periodic reporting, the reporting period for the second differential correction value needs to be defined and configured. For aperiodic reporting, reporting thresholds for the second differential correction value and / or measurement quality can be defined and configured. That is, when the second differential correction value and / or measurement quality exceed a certain threshold, TRP reports the first differential correction value; otherwise, TRP does not report the second differential correction value.

[0474] Step 3: TRP sends downlink PRS signals to PRU and target UE.

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

[0476] The base station involved in this disclosure may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with the 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 act as a router between the wireless terminal device and the rest of the access network, wherein 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 this disclosure can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA) system, a base station (NodeB) in a Wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in this disclosure. In some network structures, network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0477] As shown in Figure 4, an embodiment of this disclosure provides an information processing method, including the following steps:

[0478] Step 41: The PRU sends a fifth message to the 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;

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

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

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

[0482] The rate of change of HRTD over time;

[0483] Rate of change of RPD over time.

[0484] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments disclosed herein are not limited thereto.

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

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

[0487] And / or,

[0488] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication of RSCPD.

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

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

[0491] For example: N f The range of values ​​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, it further includes:

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

[0494] In this embodiment, the first core network device can send a sixth message to one or more PRUs to request one or more PRUs to provide a first differential correction number. In this way, one or more PRUs can send a second differential correction number to the first core network device based on the request. For example, taking the CPP positioning method as an example, this sixth message can be called an NR CPP differential correction number request message, or it can be other messages; this embodiment is not limited to these.

[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 measurement quality indication;

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

[0498] For example, one or more PRUs measure downlink PRS from different TRPs within the same time window, obtain reference signal measurement and measurement quality indication, and report 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 measurement quality indication;

[0501] If the measurement quality indication meets the differential correction accuracy requirements, the PRU processes the reference signal measurement 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 difference operation between the RSTD measurement and the ideal RSTD value to obtain the HRTD;

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

[0506] The PRU determines the rate of change of HRTD over time based on HRTD at different times;

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

[0508] For example, one or more PRUs measure downlink PRS from different TRPs within the same time window to obtain reference signal measurements and measurement quality indicators. The reference signal measurements include RSTD measurements and / or RSCPD measurements; 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 measurements meets the accuracy requirements of the differential correction factor. If it does, the PRU performs a differential operation between the RSTD measurement and the ideal value of RSTD to obtain the HRTD, and / or performs a differential operation between the RSCPD measurement and the ideal value of RSCPD to obtain the RPD. Alternatively, the PRU can also obtain the time change rate of HRTD and / or RPD from the RTD and / or RPD at different times, i.e., obtain the second differential correction factor. If the requirements are not met, the PRU discards the current RSTD and RSCPD measurements.

[0509] In this embodiment, the PRU sends a message to the first core network device carrying either a second differential correction number or a reference signal measurement quantity and a measurement quality indication. 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 indication, and then sends a first message to the terminal. The first message carries at least one of the following "first differential correction number": 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. This allows the terminal to eliminate timing deviations in the measurements based on the HRTD, ensuring the timing deviation accuracy meets the positioning strategy requirements. The terminal can also determine the RTD of the actual positioning time based on the time change rate of the HRTD, ensuring positioning accuracy. Furthermore, the terminal can implement dual differential functionality based on the RPD and / or the time change rate of the RPD, reducing 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 and high PRU load and signaling overhead in current positioning methods.

[0510] The following describes the process of PRU execution information processing:

[0511] Step 1: The PRU (or reference UE) receives a "First Differential Correction Request" message (i.e., the sixth message) from the LMF. This request message contains relevant information about the reference TRP. This message can be sent before, after, or simultaneously with 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 LMF, obtain RSTD and RSCPD measurements and measurement quality indications, 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" by measuring quality indicators.

[0514] If satisfied, the PRU performs a difference operation between the measured values ​​of RSTD and RSCPD and the ideal values ​​of RSTD and RSCPD to obtain HRTD and RPD, and obtains the time rate of change of HRTD and RPD through RTD and RPD at different times. Proceed to step 3.

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

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

[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 indications, to LMF.

[0519] Figure 5 shows an interactive flowchart of an information processing method, which includes:

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

[0521] Step 1B: PRU is in RRC connection state;

[0522] Step 2A: The LMF requests positioning capability from the UE;

[0523] Step 2B: The LMF requests location capability from the PRU;

[0524] Step 3A: UE reports its location capability;

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

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

[0527] Step 4B: The PRU requests location assistance data from the LMF;

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

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

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

[0531] Step 8B: gNB / TRP sends PRS reference signal;

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

[0533] Step 10B: The LMF requests location-related information from the PRU;

[0534] Step 11B: PRU measures the downstream PRS to obtain HRTD, RIPD, and the time change rate of HRTD and RIPD;

[0535] Step 12B: The PRU reports the first differential correction number, as well as the RSCPD measurement, PRU location, and timestamp.

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

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

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

[0539] Step 8A: gNB / TRP sends PRS reference signal;

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

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

[0542] Step 11A: The UE uses the obtained positioning measurement values ​​and base station location information to calculate the UE's location;

[0543] Step 12A: The UE reports the positioning calculation results.

[0544] The interaction process of the information processing method of this disclosure will be described below with reference to specific embodiments:

[0545] Example 1:

[0546] For the LMF side:

[0547] Step 1: The LMF receives a "UE-based NR CPP" location request message (i.e., the second message) sent by the target terminal (UE). This location request message contains the "NR CPP differential correction number" (i.e., differential correction number type) that the target UE expects the LMF to provide.

[0548] Here, "expected" can be understood as the type of differential correction number 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 the terminal requests the first core network device to provide. For example, the differential correction number type includes, but is not limited to, at least one of HRTD, RPD, the time change rate of HRTD, and the time change rate of RPD. For instance, if the terminal informs the first core network device through a second message that it expects, needs, or requests the first core network device to provide differential correction number types of 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, this embodiment of the present disclosure is 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), wherein the request message contains relevant 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: The LMF obtains the first differential correction number using the following method 1.

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

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

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

[0554] The rate of change of HRTD over time;

[0555] Rate of change of RPD over time.

[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] The second differential correction value reported by multiple TRPs can be calculated based on pre-saved known information or on information obtained from measurements using PRS (Presentation Records) sent between TRPs. The reporting methods for the second differential correction value include periodic reporting and / or aperiodic reporting. For periodic reporting, the reporting period for the second differential correction value needs to be defined and configured. For aperiodic reporting, reporting thresholds for the second differential correction value and / or the measurement quality indication can be defined and configured; that is, when the second differential correction value and / or the measurement quality indication exceed a certain threshold, the TRP reports the second differential correction value; otherwise, the TRP does not report the second differential correction value.

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

[0559] The first message from LMF to the target UE regarding the first differential correction number can be carried via UE-based positioning assistance data, a message sending UE-based positioning assistance data, a positioning request message, or a newly defined message. For example, this first message can be broadcast, unicast, or multicast. This first message can be periodic or aperiodic.

[0560] In some embodiments, the resolution of the RTD is increased in the positioning assistance data notified to the target UE by the LMF. 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 RATIO can 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 difference in TOA, calculates the timing deviation (RTD) between different TRPs, and then reports the RTD to the LMF. If multiple PRUs report RTDs, the LMF averages the RTD values ​​reported by the multiple PRUs to obtain the final RTD, and then notifies the target UE. The corresponding code is as follows:

[0562] Alternatively, in some embodiments, the initial phase deviation RPD between different TRPs may be added to the positioning assistance data notified to the target UE by the LMF. In some embodiments, the time-varying nature of the RPD may also be included, such as the time rate of change of the RPD.

[0563] In this process, 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 aforementioned positioning assistance data does not require reference to the absolute initial phase information of the TRP, but only to the initial phase difference information between the TRP and adjacent TRPs (i.e., the difference in initial phase between different TRPs), for example: RPD = InitialPhase(TRP_n) - InitialPhase(TRP_ref). Here, 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, the 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, the time-varying nature of the timing deviation caused by the UE crystal oscillator and the base station crystal oscillator needs to be further considered. The following three methods are considered:

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

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

[0568] Method 3: The LMF provides the allowable positioning error range, allowing the PRU / target UE to adjust the period T itself.

[0569] For the target UE side:

[0570] Step 1: The target UE sends a "UE-based NR CPP" location request message (i.e., the second message) to the LMF. This location request message contains the type of differential correction number that the LMF is expected to provide.

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

[0572] For the base station / TRP side:

[0573] Step 1: The TRP receives a "First Differential Correction Request" message (i.e., the fourth message) from the LMF and calculates the second differential correction. This request message contains relevant information about the reference TRP. Multiple TRPs can calculate the second differential correction based on pre-saved known information or information obtained from measurements of PRS signals sent to each other.

[0574] Step 2: TRP reports the second differential correction value to LMF directly. The reporting method for the second differential correction value includes periodic reporting and / or aperiodic reporting. For periodic reporting, the reporting period for the second differential correction value needs to be defined and configured. For aperiodic reporting, reporting thresholds for the second differential correction value and / or measurement quality indication can be defined and configured. That is, when the second differential correction value and / or measurement quality indication exceed a certain threshold, TRP reports the first differential correction value; otherwise, TRP does not report the second differential correction value.

[0575] Step 3: TRP sends downlink PRS signals to PRU and target UE.

[0576] Example 2:

[0577] For the LMF side:

[0578] Step 1: The LMF receives a "UE-based NR CPP" location request message (i.e., the second message) sent by the target terminal (UE). This location request message contains the "NR CPP differential correction number" (i.e., differential correction number type) that the target UE expects the LMF to provide.

[0579] Here, "expected" can be understood as the type of differential correction number 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 the terminal requests the first core network device to provide. For example, the differential correction number type includes, but is not limited to, at least one of HRTD, RPD, the time change rate of HRTD, and the time change rate of RPD. For instance, if the terminal informs the first core network device through a second message that it expects, needs, or requests the first core network device to provide differential correction number types of 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, this embodiment of the present disclosure is 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), wherein the request message contains relevant 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: The LMF obtains the first differential correction number through either method 2 or method 3.

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

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

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

[0585] The rate of change of HRTD over time;

[0586] Rate of change of RPD over time.

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

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

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

[0590] The first message from LMF to the target UE regarding the first differential correction number can be carried via UE-based positioning assistance data, a message sending UE-based positioning assistance data, a positioning request message, or a newly defined message. For example, this first message can be broadcast, unicast, or multicast. This first message can be periodic or aperiodic.

[0591] For the PRU side:

[0592] Step 1: The PRU (or reference UE) receives a "First Differential Correction Request" message (i.e., the sixth message) from the LMF. This request message contains relevant information about the reference TRP. This message can be sent before, after, or simultaneously with 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 LMF, obtain RSTD and RSCPD measurements and measurement quality indications, 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" by measuring quality indicators.

[0595] If satisfied, the PRU performs a difference operation between the measured values ​​of RSTD and RSCPD and the ideal values ​​of RSTD and RSCPD to obtain HRTD and RPD, and obtains the time rate of change of HRTD and RPD through RTD and RPD at different times. Proceed to step 3.

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

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

[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 indications, to LMF.

[0600] For the target UE side:

[0601] Step 1: The target UE sends a "UE-based NR CPP" location request message (i.e., the second message) to the LMF. This location request message contains the type of differential correction number that the LMF is expected to provide.

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

[0603] For the base station / TRP side:

[0604] TRP sends downlink PRS signals to PRU and target UE.

[0605] In this embodiment of the disclosure, the LMF notifies the target UE by carrying a first differential correction number in a first message. The target UE uses 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 calculation. It can also solve the problems of large PRU load and large air interface signaling overhead in conventional dual differential schemes.

[0606] The above embodiments describe the information processing method of this disclosure. The following embodiments will further explain the corresponding terminals, core network equipment, transceiver points and positioning reference units in conjunction with the accompanying drawings.

[0607] As shown in Figure 6, this embodiment provides a terminal, including a memory 61, a transceiver 62, and a processor 63; wherein, 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] Receive a first message sent by the first core network device; wherein the first message carries a first differential correction number;

[0609] The terminal performs positioning calculation based on the first differential correction number;

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

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

[0612] The relative phase deviation (RPD) between the non-reference TRP and the reference TRP;

[0613] The rate of change of HRTD over time;

[0614] Rate of change of RPD over time.

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

[0616] TRP sends timing error group identifier;

[0617] TRP transmit antenna identifier;

[0618] Antenna reference point marking;

[0619] Time information corresponding to HRTD;

[0620] The time information corresponding to RPD.

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

[0622] In some embodiments, the processor 63 is configured to read a computer program from 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 type of differential correction number that the terminal expects the first core network device to provide.

[0624] In some embodiments, the first message also carries location assistance data;

[0625] or,

[0626] The first message carries positioning assistance data, which 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 a computer program from the memory 61 and perform the following operations:

[0630] Based on the first differential correction number, the phase deviation and / or timing deviation in the RSCPD measurement of the reference signal carrier phase difference are eliminated to obtain the first RSCPD.

[0631] Based on the first RSCPD, the location is calculated.

[0632] In Figure 6, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 63 and memory represented by memory 61. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 62 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, user interface 64 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0633] The processor 63 is responsible for managing the bus architecture and general processing, and the memory 61 can store the 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), and the processor may also adopt a multi-core architecture.

[0635] The processor executes any of the methods described in the embodiments of this disclosure by invoking a computer program stored in memory, according to the obtained executable instructions. The processor and memory may also be physically separated.

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

[0637] As shown in Figure 7, this embodiment of the present disclosure provides a terminal 700, including:

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

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

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

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

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

[0643] The rate of change of HRTD over time;

[0644] Rate of change of RPD over time.

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

[0646] TRP sends timing error group identifier;

[0647] TRP transmit antenna identifier;

[0648] Antenna reference point marking;

[0649] Time information corresponding to HRTD;

[0650] The time information corresponding to RPD.

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

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

[0653] The sending unit is configured 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 also carries location assistance data;

[0655] or,

[0656] The first message carries positioning assistance data, which 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] Based on the first differential correction number, the phase deviation and / or timing deviation in the RSCPD measurement of the reference signal carrier phase difference are eliminated to obtain the first RSCPD.

[0661] Based on the first RSCPD, the location is calculated.

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

[0663] As shown in Figure 8, this embodiment of the present disclosure provides a core network device, which includes a memory 81, a transceiver 82, and a processor 83; wherein, 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; the processor 83 is used to read the computer program in the memory 81 and perform the following operations:

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

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

[0666] The relative phase deviation (RPD) between the non-reference TRP and the reference TRP;

[0667] The rate of change of HRTD over time;

[0668] Rate of change of RPD over time.

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

[0670] TRP sends timing error group identifier;

[0671] TRP transmit antenna identifier;

[0672] Antenna reference point marking;

[0673] Time information corresponding to HRTD;

[0674] The time information corresponding to RPD.

[0675] In some embodiments, the granularity of the HRTD is smaller than Tc; wherein, Tc =1 / (Δf) mxx ·N f ), Δf max For the maximum subcarrier spacing, N f This represents the number of points in 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] The receiving terminal sends a second message; 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] Determine the first differential correction number.

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

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

[0682] The first differential correction number is determined based on the second differential correction number;

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

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

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

[0686] The rate of change of HRTD over time;

[0687] Rate of change of RPD over time.

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

[0689] A fourth message is sent to one or more TRPs; wherein the fourth message is used to request the acquisition of a first differential correction number, and the fourth message carries relevant information about 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] Receive a fifth message sent by one or more Positioning Reference Units (PRUs); wherein the fifth message carries a second differential correction number;

[0692] The first differential correction number is determined based on the second differential correction number;

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

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

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

[0696] The rate of change of HRTD over time;

[0697] Rate of change of RPD over time.

[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, then the second differential correction number is determined as the first differential correction number;

[0700] And / or,

[0701] If the second differential correction number is sent by multiple TRPs or multiple PRUs, then the second differential correction number is averaged or merged 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] 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;

[0704] If the measurement quality indication meets the differential correction accuracy requirements, the first differential correction number is determined based on the measured value of the reference signal.

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

[0706] And / or,

[0707] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication 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] The reference signal measurement is processed to obtain the second differential correction number;

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

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

[0712] The HRTD is obtained by performing a difference operation between the RSTD measured value and the RSTD ideal value;

[0713] The RPD is obtained by performing a difference operation between the RSCPD measurement and the ideal RSCPD value;

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

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

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

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

[0718] In some embodiments, the first message also carries location assistance data;

[0719] or,

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

[0721] or,

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

[0723] In Figure 8, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 83 and memory represented by memory 81. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 82 may be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 83 is responsible for managing the bus architecture and general processing, and memory 81 may store data used by processor 83 during operation.

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

[0725] It should be noted that the core network equipment provided in this embodiment can implement all the method steps implemented in the first core network equipment side information processing method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0726] As shown in Figure 9, this embodiment of the 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 non-reference transceiver point (TRP) and reference TRP;

[0729] The relative phase deviation (RPD) between the non-reference TRP and the reference TRP;

[0730] The rate of change of HRTD over time;

[0731] Rate of change of RPD over time.

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

[0733] TRP sends timing error group identifier;

[0734] TRP transmit antenna identifier;

[0735] Antenna reference point marking;

[0736] Time information corresponding to HRTD;

[0737] The time information corresponding to RPD.

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

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

[0740] The first receiving unit is used to receive a second message sent by the terminal; wherein the second message carries the 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 used to determine the first differential correction number.

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

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

[0745] The first differential correction number is determined based on the second differential correction number;

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

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

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

[0749] The rate of change of HRTD over time;

[0750] Rate of change of RPD over time.

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

[0752] The second sending unit is configured to send a fourth message to one or more TRPs; wherein the fourth message is configured to request the acquisition of 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] Receive a fifth message sent by one or more Positioning Reference Units (PRUs); wherein the fifth message carries a second differential correction number;

[0755] The first differential correction number is determined based on the second differential correction number;

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

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

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

[0759] The rate of change of HRTD over time;

[0760] Rate of change of RPD over time.

[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, then the second differential correction number is determined as the first differential correction number;

[0763] And / or,

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

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

[0766] 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;

[0767] If the measurement quality indication meets the differential correction accuracy requirements, the first differential correction number is determined based on the measured value of the reference signal.

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

[0769] And / or,

[0770] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication of RSCPD.

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

[0772] The reference signal measurement is processed to obtain the second differential correction number;

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

[0774] In some embodiments, the determining unit is further configured to perform at least one of the following:

[0775] The HRTD is obtained by performing a difference operation between the RSTD measured value and the RSTD ideal value;

[0776] The RPD is obtained by performing a difference operation between the RSCPD measurement and the ideal RSCPD value;

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

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

[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 the acquisition of the first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0781] In some embodiments, the first message also carries location assistance data;

[0782] or,

[0783] The first message carries positioning assistance data, which 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 core network equipment provided in this embodiment can implement all the method steps implemented in the first core network equipment side information processing method embodiment and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0787] As shown in Figure 10, this embodiment of the present disclosure provides a transceiver point, which includes a memory 101, a transceiver 102, and a processor 103; wherein, 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; the processor 103 is used to read the computer program in the memory 101 and perform the following operations:

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

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

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

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

[0792] The rate of change of HRTD over time;

[0793] Rate of change of RPD over time.

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

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

[0796] The system receives a fourth message sent by the first core network device; wherein the fourth message is used to request the acquisition of the 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 a computer program from the memory 101 and perform the following operations:

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

[0799] or,

[0800] If the first condition is met, the third message is sent 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 indication of the reference signal carrier phase difference (RSCPD) is greater than the fourth threshold.

[0806] In Figure 10, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 103 and memory represented by memory 101. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 102 may be multiple elements, including a transmitter and a receiver, providing units for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. Processor 103 is responsible for managing the bus architecture and general processing, and memory 101 may store data used by processor 103 during operation.

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

[0808] The processor executes any of the methods described in the embodiments of this disclosure by invoking a computer program stored in memory, according to the obtained executable instructions. The processor and memory may also be physically separated.

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

[0810] As shown in Figure 11, this embodiment of the present disclosure provides a transceiver point 1100, including:

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

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

[0813] The high-resolution relative time deviation (HRTD) between the transceiver point (TRP) and the reference TRP;

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

[0815] The rate of change of HRTD over time;

[0816] Rate of change of RPD over time.

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

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

[0819] The receiving unit is configured to receive a fourth message sent by the first core network device; wherein the fourth message is used to request the acquisition of 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] The third message is sent to the first core network device in a periodic manner;

[0822] or,

[0823] If the first condition is met, the third message is sent 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 indication of the reference signal carrier phase difference (RSCPD) is greater than the fourth threshold.

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

[0830] As shown in Figure 12, this 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 stores a computer program; the transceiver 122 transmits and receives data under the control of the processor 123; for example, the transceiver 122 receives and sends data under the control of the processor 123; the processor 123 reads the computer program from the memory 121 and performs the following operations:

[0831] Send a fifth message to the 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;

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

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

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

[0835] The rate of change of HRTD over time;

[0836] Rate of change of RPD over time.

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

[0838] And / or,

[0839] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication of RSCPD.

[0840] In some embodiments, the granularity of the HRTD is smaller than Tc; wherein, T c =1 / (Δf) max ·N f ), Δf max For the maximum subcarrier spacing, N f This represents the number of points in 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] The system receives a sixth message sent by the first core network device; wherein the sixth message is used to request the acquisition of 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] The positioning reference signal PRS sent by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication;

[0845] A fifth message is sent to the first core network device; wherein the fifth message carries the reference signal measurement quantity and measurement quality indication.

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

[0847] The positioning reference signal PRS sent by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication;

[0848] If the measurement quality indication meets the differential correction accuracy requirements, the reference signal measurement is processed to obtain the second differential correction number;

[0849] A fifth message is sent 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 a computer program from the memory 121 and perform at least one of the following operations:

[0851] The HRTD is obtained by performing a difference operation between the RSTD measured value and the RSTD ideal value;

[0852] The RPD is obtained by performing a difference operation between the RSCPD measurement and the ideal RSCPD value;

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

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

[0855] In Figure 12, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 123 and memory represented by memory 121. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 122 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, and other transmission media.

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

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

[0858] The processor executes any of the methods described in the embodiments of this disclosure by invoking a computer program stored in memory, according to the obtained executable instructions. The processor and memory may also be physically separated.

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

[0860] As shown in Figure 13, this embodiment of the present disclosure provides a positioning reference unit 1300, including:

[0861] The sending unit 1310 is used to send a fifth message to the 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;

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

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

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

[0865] The rate of change of HRTD over time;

[0866] Rate of change of RPD over time.

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

[0868] And / or,

[0869] The measurement quality indication includes: the measurement quality indication of RSTD, and / or, the measurement quality indication of RSCPD.

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

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

[0872] The receiving unit is configured to receive a sixth message sent by the first core network device; wherein the sixth message is used to request the acquisition of the 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] The positioning reference signal PRS sent by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication;

[0875] A fifth message is sent to the first core network device; wherein the fifth message carries the reference signal measurement quantity and measurement quality indication.

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

[0877] The positioning reference signal PRS sent by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication;

[0878] If the measurement quality indication meets the differential correction accuracy requirements, the reference signal measurement is processed to obtain the second differential correction number;

[0879] A fifth message is sent to the first core network device; wherein the fifth message carries the second differential correction number.

[0880] In some embodiments, the transmitting unit 1310 is further configured to perform at least one of the following:

[0881] The HRTD is obtained by performing a difference operation between the RSTD measured value and the RSTD ideal value;

[0882] The RPD is obtained by performing a difference operation between the RSCPD measurement and the ideal RSCPD value;

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

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

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

[0886] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0887] If the integrated unit is implemented as 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 this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0888] This disclosure also provides a processor-readable storage medium storing a computer program that causes the processor to execute the steps of the above-described information processing method and achieves the same technical effect. The parts and beneficial effects that are the same as those in the method embodiments will not be described in detail here.

[0889] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magnetic optical disk (MO)), optical memory (e.g., compact disc (CD), digital video disc (DVD), Blu-ray disc (BD), high-definition versatile disc (HVD)), and semiconductor memory (e.g., read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid state hard disk (SSD)).

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

[0891] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0892] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0893] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0894] Furthermore, it should be noted that in the apparatus and method of this disclosure, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of this disclosure. Moreover, the steps performing the above series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of this disclosure can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof, which can be achieved by those skilled in the art using their basic programming skills after reading the description of this disclosure.

[0895] It should be noted that the above division of modules is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. For example, a module can be a separate processing element, or it can be integrated into a chip in the aforementioned device. Alternatively, it can be stored as program code in the memory of the aforementioned device, and its function can be called and executed by a processing element of the device. The implementation of other modules is similar. Moreover, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0896] For example, each module, unit, subunit, or submodule can be one or more integrated circuits configured to implement the above methods, 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). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0897] The terms “first,” “second,” etc., used in this disclosure and in the claims are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. Additionally, the use of “and / or” in the specification and claims indicates at least one of the connected objects, such as A and / or B and / or C, indicating seven possibilities: A alone, B alone, C alone, and both A and B, both B and C, both A and C, and A, B, and C. Similarly, the use of “at least one of A and B” in this specification and claims should be understood as “A alone, B alone, or both A and B.”

[0898] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

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

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

3. The information processing method according to claim 1, wherein The granularity of the HRTD is less than T c ; wherein 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 also 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 also carries location assistance data; or, The first message carries positioning assistance data, which includes the first differential correction number; or, The first message is used to request terminal capabilities.

6. The information processing method according to claim 1, wherein The terminal performs positioning calculation based on 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 based on the first differential correction number to obtain the first RSCPD. The terminal performs positioning calculations based on 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: High-resolution relative time deviation (HRTD) between non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

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

9. The information processing method according to claim 7, wherein The granularity of the HRTD is less than T c ; wherein 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 also 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 also 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 based on the second differential correction number; Wherein, the second differential correction number includes at least one of the following: The HRTD of the one or more TRPs and the reference TRP; The one or more TRPs and the RPD of the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

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 also includes: The first core network device sends a fourth message to one or more TRPs; wherein the fourth message is used to request 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 based on the second differential correction number; Wherein, the second differential correction number includes at least one of the following: HRTD of non-reference TRP and reference TRP; Non-reference TRP and RPD of reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

15. The information processing method according to claim 12 or 14, wherein The first core network device determines the first differential correction number based on the second differential correction number, including: If the second differential correction number is sent by a TRP or a PRU, then the first core network device will determine 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 averages or merges 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; If the measurement quality indication meets the differential correction accuracy requirements, the first core network device determines the first differential correction number based on the reference signal measurement.

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

18. The information processing method according to claim 16 or 17, wherein The first core network device determines the first differential correction number based on the reference signal measurement, including: The first core network device processes the reference signal measurement to obtain a second differential correction value; If the reference signal measurement is sent by a single 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 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 to obtain a second differential correction value, including at least one of the following: The first core network device performs a difference operation between the RSTD measurement and the ideal RSTD value to obtain the HRTD; The first core network device performs a difference operation between the RSCPD measurement and the ideal RSCPD value to obtain the RPD; The first core network device determines the time change rate of HRTD based on the HRTD at different times; The first core network device determines the time change rate of RPD based on the 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 also includes: The first core network device sends a sixth message to one or more PRUs; wherein the sixth message is used to request the first differential correction number, and the sixth message carries relevant information about the reference TRP.

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

22. An information processing method, comprising: The transceiver point (TRP) sends a third message to the 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 rate of change of HRTD over time; Rate of change of RPD over time.

23. The information processing method according to claim 22, wherein The granularity of the HRTD is less than T c ; wherein 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 also includes: The TRP receives a fourth message sent by the first core network device; wherein the fourth message is used to request the acquisition of the first differential correction number, and the fourth message carries relevant information of the reference TRP.

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

26. An information processing method, comprising: The Positioning Reference Unit (PRU) sends a fifth message to the 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 non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

27. The information processing method according to claim 26, wherein, The reference signal measurements include: relative signal arrival time difference (RSTD) measurement, and / or, reference signal carrier phase difference (RSCPD) measurement; 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 ; wherein 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 the fifth message to the first core network device, it also includes: The PRU receives a sixth message sent by the first core network device; wherein the sixth message is used to request the acquisition of the first differential correction number, and the sixth message carries relevant information of the reference TRP.

30. The information processing method according to claim 26 or 27, wherein, The Positioning Reference Unit (PRU) sends a fifth message to the first core network device, including: The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and 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 measurement quality indication.

31. The information processing method according to claim 26 or 27, wherein, The Positioning Reference Unit (PRU) sends a fifth message to the first core network device, including: The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and measurement quality indication; If the measurement quality indication meets the differential correction accuracy requirements, the PRU processes the reference signal measurement 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 processes the reference signal measurement to obtain the second differential correction number, including at least one of the following: The PRU performs a difference operation between the RSTD measurement and the ideal RSTD value to obtain the HRTD; The PRU performs a difference operation between the RSCPD measurement and the ideal RSCPD value to obtain the RPD; The PRU determines the rate of change of HRTD over time based on HRTD at different times; The PRU determines the time rate of change of RPD based on RPD at different times.

33. A terminal, comprising a memory, a transceiver, and a processor; in, 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 from 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; Based on the first differential correction number, the positioning solution is performed; Wherein, the first differential correction number includes at least one of the following: High-resolution relative time deviation (HRTD) between non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

34. The terminal according to claim 33, wherein, The first message also carries at least one of the following information: TRP sends timing error group identifier; TRP transmit antenna identifier; Antenna reference point marking; 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 program 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: Based on the first differential correction number, the phase deviation and / or timing deviation in the RSCPD measurement of the reference signal carrier phase difference are eliminated to obtain the first RSCPD. Based on the first RSCPD, the location is calculated.

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

38. A core network device, comprising a memory, a transceiver, and a processor; in, 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 from the memory and perform the following operations: Send a first message to the terminal; wherein the first message carries a first differential correction number, the first differential correction number including at least one of the following: High-resolution relative time deviation (HRTD) between non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

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

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

41. The core network equipment 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 one or more third messages sent by TRPs; wherein the third message carries a second differential correction number; The first differential correction number is determined based on the second differential correction number; Wherein, the second differential correction number includes at least one of the following: The HRTD of the one or more TRPs and the reference TRP; The one or more TRPs and the RPD of the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

42. The core network equipment 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; The first differential correction number is determined based on the second differential correction number; Wherein, the second differential correction number includes at least one of the following: HRTD of non-reference TRP and reference TRP; Non-reference TRP and RPD of reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

43. The core network equipment 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 PRUs; wherein the fifth message carries a reference signal measurement quantity and a measurement quality indication; If the measurement quality indication meets the differential correction accuracy requirements, the first differential correction number is determined based on the measured value of the reference signal.

44. A core network device, comprising: 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: High-resolution relative time deviation (HRTD) between non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

45. A transceiver point, comprising a memory, a transceiver, and a processor; in, 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 from the memory and perform the following operations: A third message is sent to the 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 the reference TRP; The relative phase deviation RPD between the TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

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

47. A transceiver point, comprising: A sending unit is 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 the reference TRP; The relative phase deviation RPD between the TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

48. A positioning reference unit, comprising a memory, a transceiver, and a processor; in, 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 from the memory and perform the following operations: Send a fifth message to the 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 non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

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

50. The positioning reference unit according to claim 48, wherein, The processor is used to read the computer program in the memory and perform the following operations: The positioning reference signal PRS sent by the TRP is measured to obtain the reference signal measurement quantity and measurement quality indication; If the measurement quality indication meets the differential correction accuracy requirements, the reference signal measurement is processed to obtain the second differential correction number; A fifth message is sent to the first core network device; wherein the fifth message carries the second differential correction number.

51. A positioning reference unit, comprising: The transmitting unit is used to send a fifth message to the 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 non-reference transceiver point (TRP) and reference TRP; The relative phase deviation (RPD) between the non-reference TRP and the reference TRP; The rate of change of HRTD over time; Rate of change of RPD over time.

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.

Images