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

Abstract

The invention provides an information processing method, a terminal, core network equipment and a positioning reference unit. The method comprises the following steps: the terminal receives a first message sent by first core network equipment; wherein the first message carries a first differential correction number; the terminal carries out positioning calculation according to the first differential correction number; wherein the first differential correction comprises at least one of the following items: a high resolution relative time deviation HRTD of a non-reference transmit-receive point TRP and a reference TRP; the relative phase deviation RPD of the non-reference TRP and the reference TRP; a rate of change over time of HRTD; and a rate of change in RPD over time. According to the invention, the problems of poor positioning accuracy, relatively large PRU load and relatively large signaling overhead of the existing positioning method can be solved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to an information processing method, a terminal, a core network device, and a positioning reference unit. Background Art

[0002] Downlink positioning methods include: a positioning method based on Downlink Time Difference of Arrival (DL-TDOA), and a positioning method 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 granularity of the currently supported RTD is relatively large, which cannot meet the timing deviation accuracy requirements of Carrier Phase Positioning (CPP). Moreover, each RTD only represents the timing deviation between TRPs at a certain moment. For the target terminal side, there may be a deviation between the received RTD and the RTD at the actual positioning moment, which will lead to a decrease in positioning accuracy.

[0003] In addition, in order to complete the double-differencing function, a possible solution is that the Positioning Reference Unit (PRU) directly reports the reference signal measurement to the Location Management Function (LMF) network element, and the LMF network element forwards it to the target terminal. This solution requires the PRU and the target terminal to measure the Downlink Positioning Reference Signal (PRS) within the same short time window. When there are many target terminals that the PRU needs to serve, it will cause a large load on the PRU and generate a large signaling overhead. Summary of the Invention

[0004] This application provides an information processing method, a terminal, a core network device, and a positioning reference unit, which solve the problems of poor positioning accuracy in the current positioning method, as well as large PRU load and large signaling overhead.

[0005] An embodiment of this application provides an information processing method, including:

[0006] The terminal receives a first message sent by a first core network device; wherein, the first message carries a first differential correction number;

[0007] The terminal performs positioning calculation according to the first differential correction number;

[0008] Wherein, the first differential correction number includes at least one of the following:

[0009] The high-accuracy relative time difference (HRTD) between the non-reference TRP and the reference TRP;

[0010] The relative phase difference (RPD) between the non-reference TRP and the reference TRP;

[0011] The time change rate of HRTD;

[0012] The time change rate of RPD.

[0013] In some embodiments, the first message further carries at least one of the following information:

[0014] The TRP transmission timing error group identifier;

[0015] The TRP transmission antenna identifier;

[0016] The antenna reference point identifier;

[0017] The time information corresponding to HRTD;

[0018] The time information corresponding to RPD.

[0019] In some embodiments, 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).

[0020] In some embodiments, before the terminal receives the first message sent by the first core network device, it further includes:

[0021] 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.

[0022] In some embodiments, the first message further carries positioning assistance data;

[0023] Or,

[0024] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0025] Or,

[0026] The first message is used to request terminal capabilities.

[0027] In some embodiments, the terminal performs positioning calculation according to the first differential correction number, including:

[0028] The terminal eliminates the phase deviation and / or timing deviation in the Reference Signal Carrier Phase Difference (RSCPD) measurement according to the first differential correction number to obtain the first RSCPD;

[0029] The terminal performs positioning calculation according to the first RSCPD.

[0030] An embodiment of the present application provides an information processing method, including:

[0031] A first core network device sends 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:

[0032] HRTD of a non-reference TRP and a reference TRP;

[0033] RPD of a non-reference TRP and a reference TRP;

[0034] Time change rate of HRTD;

[0035] Time change rate of RPD.

[0036] In some embodiments, the first message further carries at least one of the following information:

[0037] TRP transmission timing error group identifier;

[0038] TRP transmission antenna identifier;

[0039] Antenna reference point identifier;

[0040] Time information corresponding to HRTD;

[0041] Time information corresponding to RPD.

[0042] In some embodiments, the granularity of the HRTD is less than T c ; where T c =1 / (Δf max ·N f ), Δf maxis the maximum subcarrier spacing, N f is the number of points of the FFT.

[0043] In some embodiments, before the first core network device sends a first message to the terminal, it further includes:

[0044] 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.

[0045] In some embodiments, before the first core network device sends a first message to the terminal, it further includes:

[0046] The first core network device determines the first differential correction number.

[0047] In some embodiments, the first core network device determines the first differential correction number, including:

[0048] 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;

[0049] The first core network device determines the first differential correction number according to the second differential correction number;

[0050] Wherein, the second differential correction number includes at least one of the following:

[0051] The HRTD between the TRP and the reference TRP;

[0052] The RPD between the TRP and the reference TRP;

[0053] The time change rate of the HRTD;

[0054] The time change rate of the RPD.

[0055] In some embodiments, before the first core network device receives a third message sent by one or more TRPs, it further includes:

[0056] The first core network device sends a fourth message to one or more TRPs; wherein, the fourth message is used to request to obtain the first differential correction number, and the fourth message carries the relevant information of the reference TRP.

[0057] In some embodiments, the first core network device determines the first differential correction number, including:

[0058] 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;

[0059] The first core network device determines the first differential correction number according to the second differential correction number;

[0060] Wherein, the second differential correction number includes at least one of the following:

[0061] HRTD of the non-reference TRP and the reference TRP;

[0062] RPD of the non-reference TRP and the reference TRP;

[0063] Time change rate of HRTD;

[0064] Time change rate of RPD.

[0065] In some embodiments, the first core network device determines the first differential correction number according to the second differential correction number, including:

[0066] If the second differential correction number is sent by one TRP or one PRU, the first core network device determines the second differential correction number as the first differential correction number;

[0067] And / or,

[0068] If the second differential correction number is sent by multiple TRPs or multiple PRUs, the first core network device performs averaging or merging processing on the second differential correction number to obtain the first differential correction number.

[0069] In some embodiments, the first core network device determines the first differential correction number, including:

[0070] 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;

[0071] When the measurement quality indication meets the differential correction accuracy requirement, the first core network device determines the first differential correction number according to the reference signal measurement quantity.

[0072] In some embodiments, the reference signal measurement quantity includes: a relative signal time difference (RSTD) measurement quantity, and / or, an RSCPD measurement quantity;

[0073] And / or,

[0074] The measurement quality indication includes: a measurement quality indication of RSTD, and / or, a measurement quality indication of RSCPD.

[0075] In some embodiments, the first core network device determines the first differential correction number according to the reference signal measurement quantity, including:

[0076] The first core network device processes the reference signal measurement quantity to obtain a second differential correction number;

[0077] If the reference signal measurement quantity is sent by one PRU, the first core network device determines the second differential correction number as the first differential correction number; and / or, if the reference signal measurement quantity is sent by multiple PRUs, the first core network device averages or combines the second differential correction numbers corresponding to the multiple PRUs to obtain the first differential correction number.

[0078] In some embodiments, the first core network device processes the reference signal measurement quantity to obtain a second differential correction number, including at least one of the following:

[0079] The first core network device performs a difference operation on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD;

[0080] The first core network device performs a difference operation on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD;

[0081] The first core network device determines the time change rate of HRTD according to HRTD at different times;

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

[0083] In some embodiments, before the first core network device receives the fifth message sent by one or more PRUs, it further includes:

[0084] The first core network device sends a sixth message to one or more PRUs; wherein, the sixth message is used to request to obtain the first differential correction number, and the sixth message carries the relevant information of the reference TRP.

[0085] In some embodiments, the first message further carries positioning assistance data;

[0086] Or,

[0087] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0088] Or,

[0089] The first message is used to request terminal capabilities.

[0090] An information processing method provided by an embodiment of the present application includes:

[0091] The TRP sends a third message to the first core network device; wherein, the third message carries a second differential correction number.

[0092] Wherein, the second differential correction number includes at least one of the following:

[0093] The HRTD between the TRP and the reference TRP;

[0094] The RPD between the TRP and the reference TRP;

[0095] The time change rate of the HRTD;

[0096] The time change rate of the RPD.

[0097] In some embodiments, 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 FFT.

[0098] In some embodiments, before the TRP sends the third message to the first core network device, it further includes:

[0099] The TRP receives a fourth message sent by the first core network device; wherein, the fourth message is used to request to obtain a first differential correction number, and the fourth message carries the relevant information of the reference TRP.

[0100] In some embodiments, the TRP sending the third message to the first core network device includes:

[0101] The TRP sends the third message to the first core network device in a periodic manner;

[0102] Or,

[0103] When a first condition is satisfied, the TRP sends the third message to the first core network device;

[0104] Wherein, the first condition includes at least one of the following:

[0105] The HRTD is greater than a first threshold;

[0106] The RPD is greater than a second threshold;

[0107] The measurement quality indication of the RSTD is greater than a third threshold;

[0108] The measurement quality indication of the RSCPD is greater than a fourth threshold.

[0109] An embodiment of this application provides an information processing method, including:

[0110] 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;

[0111] Wherein, the second differential correction number includes at least one of the following:

[0112] The HRTD between the non-reference TRP and the reference TRP;

[0113] The RPD between the non-reference TRP and the reference TRP;

[0114] The time change rate of the HRTD;

[0115] The time change rate of the RPD.

[0116] In some embodiments, the reference signal measurement quantity includes: the RSTD measurement quantity, and / or, the RSCPD measurement quantity;

[0117] And / or

[0118] The measurement quality indication includes: the measurement quality indication of the RSTD, and / or, the measurement quality indication of the RSCPD.

[0119] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, N f is the number of points of the FFT.

[0120] In some embodiments, before the PRU sends the fifth message to the first core network device, it further includes:

[0121] The PRU receives a sixth message sent by the first core network device; wherein, the sixth message is used to request to obtain a first differential correction number, and the sixth message carries the relevant information of the reference TRP.

[0122] In some embodiments, the PRU sending the fifth message to the first core network device includes:

[0123] The PRU measures the PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication;

[0124] The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement quantity and the measurement quality indication.

[0125] In some embodiments, the PRU sends a fifth message to a first core network device, including:

[0126] The PRU measures the PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication;

[0127] When the measurement quality indication meets the differential correction accuracy requirement, the PRU processes the reference signal measurement quantity to obtain the second differential correction number;

[0128] The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number.

[0129] In some embodiments, the PRU processes the reference signal measurement quantity to obtain the second differential correction number, including at least one of the following:

[0130] The PRU performs a difference operation on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD;

[0131] The PRU performs a difference operation on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD;

[0132] The PRU determines the time change rate of HRTD according to the HRTD at different times;

[0133] The PRU determines the time change rate of RPD according to the RPD at different times.

[0134] An embodiment of the present application provides a terminal, including a memory, a transceiver, and a processor;

[0135] Wherein, the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0136] Receive a first message sent by a first core network device; wherein, the first message carries a first differential correction number;

[0137] Perform positioning calculation according to the first differential correction number;

[0138] Wherein, the first differential correction number includes at least one of the following:

[0139] HRTD of a non-reference TRP and a reference TRP;

[0140] RPD of a non-reference TRP and a reference TRP;

[0141] Time change rate of HRTD;

[0142] Time change rate of RPD.

[0143] In some embodiments, the first message further carries at least one of the following information:

[0144] TRP transmission timing error group identifier;

[0145] TRP transmission antenna identifier;

[0146] Antenna reference point identifier;

[0147] Time information corresponding to HRTD;

[0148] Time information corresponding to RPD.

[0149] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0150] 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.

[0151] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0152] Eliminate the phase deviation and / or timing deviation in the reference signal carrier phase difference (RSCPD) measurement according to the first differential correction number to obtain the first RSCPD;

[0153] Perform positioning calculation according to the first RSCPD.

[0154] An embodiment of the present application provides a terminal, including:

[0155] A receiving unit, configured to receive a first message sent by a first core network device; wherein, the first message carries a first differential correction number;

[0156] A processing unit, configured to perform positioning calculation according to the first differential correction number;

[0157] Wherein, the first differential correction number includes at least one of the following:

[0158] HRTD of non-reference TRP and reference TRP;

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

[0160] Time change rate of HRTD;

[0161] Time change rate of RPD.

[0162] An embodiment of the present application provides a core network device, including a memory, a transceiver, and a processor;

[0163] Wherein, the memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

[0164] 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:

[0165] HRTD of the non-reference TRP and the reference TRP;

[0166] RPD of the non-reference TRP and the reference TRP;

[0167] Time change rate of HRTD;

[0168] Time change rate of RPD.

[0169] In some embodiments, the first message further carries at least one of the following information:

[0170] TRP transmission timing error group identifier;

[0171] TRP transmission antenna identifier;

[0172] Antenna reference point identifier;

[0173] Time information corresponding to HRTD;

[0174] Time information corresponding to RPD.

[0175] In some embodiments, the processor is used to read the computer programs in the memory and perform the following operations:

[0176] Receive a second message sent by the terminal; wherein, the second message carries the type of differential correction number that the terminal expects to provide.

[0177] In some embodiments, the processor is used to read the computer programs in the memory and perform the following operations:

[0178] Receive a third message sent by one or more TRPs; wherein, the third message carries a second differential correction number;

[0179] Determine the first differential correction number according to the second differential correction number;

[0180] Wherein, the second differential correction number includes at least one of the following:

[0181] HRTD of the TRP and the reference TRP;

[0182] The RPD of the said TRP and the reference TRP;

[0183] The time change rate of HRTD;

[0184] The time change rate of RPD.

[0185] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0186] Receive a fifth message sent by one or more positioning reference units PRU; wherein, the fifth message carries a second differential correction number;

[0187] Determine the first differential correction number according to the second differential correction number;

[0188] Wherein, the second differential correction number includes at least one of the following:

[0189] The HRTD of the non-reference TRP and the reference TRP;

[0190] The RPD of the non-reference TRP and the reference TRP;

[0191] The time change rate of HRTD;

[0192] The time change rate of RPD.

[0193] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0194] 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;

[0195] When the measurement quality indication meets the differential correction accuracy requirement, determine the first differential correction number according to the reference signal measurement quantity.

[0196] Embodiments of the present application provide a core network device, including:

[0197] A first sending unit, configured to send a first message to a terminal; wherein, the first message carries a first differential correction number, and the first differential correction number includes at least one of the following:

[0198] The HRTD of the non-reference TRP and the reference TRP;

[0199] The RPD of the non-reference TRP and the reference TRP;

[0200] The time change rate of HRTD;

[0201] The time change rate of RPD.

[0202] An embodiment of the present application provides a transceiver point, including a memory, a transceiver, and a processor;

[0203] Wherein, the memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

[0204] Send a third message to a first core network device; wherein, the third message carries a second differential correction number;

[0205] Wherein, the second differential correction number includes at least one of the following:

[0206] The HRTD between the TRP and the reference TRP;

[0207] The RPD between the TRP and the reference TRP;

[0208] The time change rate of the HRTD;

[0209] The time change rate of the RPD.

[0210] In some embodiments, the processor is used to read the computer programs in the memory and perform the following operations:

[0211] Send the third message to the first core network device in a periodic manner;

[0212] Or,

[0213] When a first condition is met, send the third message to the first core network device;

[0214] Wherein, the first condition includes at least one of the following:

[0215] The HRTD is greater than a first threshold;

[0216] The RPD is greater than a second threshold;

[0217] The measurement quality indication of the RSTD is greater than a third threshold;

[0218] The measurement quality indication of the RSCPD is greater than a fourth threshold.

[0219] An embodiment of the present application provides a transceiver point, including:

[0220] A sending unit, configured to send a third message to a first core network device; wherein, the third message carries a second differential correction number;

[0221] Wherein, the second differential correction number includes at least one of the following:

[0222] The HRTD between the TRP and the reference TRP;

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

[0224] the time change rate of HRTD;

[0225] the time change rate of RPD.

[0226] An embodiment of the present application provides a positioning reference unit, including a memory, a transceiver, and a processor;

[0227] Wherein, the memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

[0228] 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;

[0229] Wherein, the second differential correction number includes at least one of the following:

[0230] the HRTD of the non-reference TRP and the reference TRP;

[0231] the RPD of the non-reference TRP and the reference TRP;

[0232] the time change rate of HRTD;

[0233] the time change rate of RPD.

[0234] In some embodiments, the processor is used to read the computer programs in the memory and perform the following operations:

[0235] Measure the PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication;

[0236] Send a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement quantity and the measurement quality indication.

[0237] In some embodiments, the processor is used to read the computer programs in the memory and perform the following operations:

[0238] Measure the PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication;

[0239] When the measurement quality indication meets the differential correction accuracy requirement, process the reference signal measurement quantity to obtain the second differential correction number;

[0240] Send a fifth message to a first core network device; wherein, the fifth message carries the second differential correction number.

[0241] An embodiment of the present application provides a positioning reference unit, including:

[0242] A sending unit, configured to send a fifth message to a first core network device; wherein, the fifth message carries a second differential correction number, or the fifth message carries a reference signal measurement quantity and a measurement quality indication;

[0243] Wherein, the second differential correction number includes at least one of the following:

[0244] The HRTD of a non-reference TRP and a reference TRP;

[0245] The RPD of a non-reference TRP and a reference TRP;

[0246] The time change rate of the HRTD;

[0247] The time change rate of the RPD.

[0248] An embodiment of the present application provides a processor-readable storage medium, which stores a computer program for causing the processor to execute the steps of the information processing method as described above.

[0249] The beneficial effects of the above technical solutions of the present application are:

[0250] In an embodiment of the present application, a terminal receives a first message sent by a first core network device; wherein, the first message carries at least one of the following: the HRTD of a non-reference TRP and a reference TRP, the RPD of a non-reference TRP and a reference TRP, the time change rate of the HRTD, and the time change rate of the RPD, which is a "first differential correction number". In this way, the terminal can eliminate the timing deviation of the measurement quantity based on the HRTD to ensure the timing deviation accuracy that meets the positioning policy requirements. The terminal can also know the RTD at the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of positioning. The terminal can also implement a double-differential function based on the RPD and / or the time change rate of the RPD to reduce the increase in PRU load and signaling overhead caused by the terminal obtaining reference signal measurement quantities through air interface signaling to determine phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load, and large signaling overhead in the current positioning method. Description of the Drawings

[0251] Figure 1 A flowchart showing the information processing method on the terminal side of an embodiment of the present application;

[0252] Figure 2Flowchart showing the information processing method on the side of the first core network device according to an embodiment of the present application;

[0253] Figure 3 Flowchart showing the information processing method on the side of the transceiver point according to an embodiment of the present application;

[0254] Figure 4 Flowchart showing the information processing method on the side of the positioning reference unit according to an embodiment of the present application;

[0255] Figure 5 Interaction flowchart showing the information processing method according to an embodiment of the present application;

[0256] Figure 6 Block diagram of the terminal according to an embodiment of the present application;

[0257] Figure 7 Another block diagram of the terminal according to an embodiment of the present application;

[0258] Figure 8 Block diagram of the first core network device according to an embodiment of the present application;

[0259] Figure 9 Another block diagram of the first core network device according to an embodiment of the present application;

[0260] Figure 10 Block diagram of the transceiver point according to an embodiment of the present application;

[0261] Figure 11 Another block diagram of the transceiver point according to an embodiment of the present application;

[0262] Figure 12 Block diagram of the positioning reference unit according to an embodiment of the present application;

[0263] Figure 13 Another block diagram of the positioning reference unit according to an embodiment of the present application. Detailed implementation

[0264] To make the technical problems, technical solutions and advantages to be solved by the present application clearer, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments. In the following description, providing specific details such as specific configurations and components is only to help comprehensively understand the embodiments of the present application. Therefore, those skilled in the art should clearly understand that various changes and modifications can be made to the embodiments described here without departing from the scope and spirit of the present application. In addition, descriptions of known functions and configurations are omitted for clarity and conciseness.

[0265] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0266] In various embodiments of the present application, it should be understood that the magnitudes of the serial numbers of the following processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0267] In addition, the terms "system" and "network" are often used interchangeably herein.

[0268] The technical solutions provided by the embodiments of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable systems can be Global System of Mobile Communication (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems, etc. Both terminal devices and network devices are included in these various systems. The system can also include a core network part, such as an Evolved Packet System (EPS), 5G System (5GS), etc.

[0269] A network device and a terminal device can each use one or more antennas for multi-input multi-output (MIMO) transmission. The MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). According to the form and quantity of the root antenna combination, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or it can be diversity transmission, precoding transmission, beamforming transmission, etc.

[0270] In the embodiments of the present application, the term "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0271] In the embodiments of the present application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0272] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0273] The following introduces the related technologies involved in the present application:

[0274] 1. Currently, the LMF is supported to use the RTD to notify the target UE of the timing deviation between different TRPs. However, the granularity of the RTD information (NR-RTD-Info) defined in the current 5G NR system is:

[0275] Tc = 1 / (480KHz * 4096) = 0.509ns = 15.26cm, where Δf max = 480KHz is the maximum subcarrier spacing, and N f = 4096 is the number of points of the fast Fourier transform (FFT).

[0276] As shown in Table 1, the auxiliary data required for the UE-based DL-TDOA and / or DL-AoD positioning method is given.

[0277] Table 1: Mapping of posSibType to assistance Data Element

[0278]

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

[0280]

[0281] 2. RTD information (NR-RTD-Info)

[0282] The location server uses the IE NR-RTD-Info to provide time synchronization information between a reference TRP and a list of neighbour TRPs (or called non-reference TRP list). For example, the code is as follows:

[0283]

[0284] ReferenceTRP-RTD-Info-r16::=SEQUENCE{ / / Reference time (absolute value, non-differential) of the reference TRP and quality indication of the reference time

[0285]

[0286]

[0287]

[0288] --ASN1STOP

[0289] 3. Subframe offset

[0290] This field specifies the subframe boundary offset at the TRP antenna location between the reference TRP and this neighbour TRP in time units: T c = 1 / (Δf max ·N f ). Here, Δf max = 480 kHz, N f = 4096, and the offset is counted from the beginning of a subframe #0 of the reference TRP to the beginning of the closest subsequent subframe of this neighbour TRP.

[0291] Embodiments of the present application provide an information processing method, a terminal, a core network device, a transceiver point, and a positioning reference unit to solve the problems of poor positioning accuracy, large PRU load, and large signaling overhead in current positioning methods. Among them, the method and the terminal (or core network device or transceiver point or positioning reference unit) are based on the same inventive concept. Since the principles of the method and the terminal (or core network device or transceiver point or positioning reference unit) for solving problems are similar, the implementations of the method and the terminal (or core network device or transceiver point or positioning reference unit) can be referred to each other, and the repeated parts will not be elaborated.

[0292] As Figure 1 shown, embodiments of the present application provide an information processing method, including the following steps:

[0293] Step 11: The terminal receives a first message sent by a first core network device; wherein, the first message carries a first differential correction number;

[0294] Wherein, the first differential correction number includes at least one of the following:

[0295] HRTD of non-reference TRP and reference TRP;

[0296] RPD of non-reference TRP and reference TRP;

[0297] Time change rate of HRTD;

[0298] Time change rate of RPD.

[0299] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments of the present application are not limited thereto.

[0300] In some embodiments, the first differential correction number may be provided by the TRP or PRU, or determined by the first core network device according to the data provided by the TRP or PRU. The following will specifically describe the embodiments on the side of the first core network device, and the embodiments of the present application are not limited thereto.

[0301] Step 12: The terminal performs positioning calculation according to the first differential correction number;

[0302] For example: The terminal can eliminate the phase deviation and / or timing deviation of the measurement quantity according to the first differential correction number, and perform positioning calculation based on the measurement quantity after eliminating the deviation.

[0303] 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: HRTD of non-reference TRP and reference TRP, RPD of non-reference TRP and reference TRP, time change rate of HRTD, time change rate of RPD, that is, the "first differential correction number". In this way, the terminal can eliminate the timing deviation of the measurement quantity based on the HRTD to ensure the timing deviation accuracy that meets the positioning strategy requirements. The terminal can also obtain the RTD at the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of positioning. The terminal can also implement the double-differential function based on the RPD and / or the time change rate of the RPD, so as to reduce the increase in PRU load and signaling overhead caused by the terminal obtaining the reference signal measurement quantity through the air interface signaling to determine the phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load and large signaling overhead existing in the current positioning method.

[0304] In some embodiments, the first message further carries at least one of the following information:

[0305] TRP transmission timing error group identifier (Timing Error Group IDentity, TEG ID);

[0306] TRP transmission antenna identifier;

[0307] Antenna Reference Point IDentity (ARP ID);

[0308] The time information corresponding to HRTD; for example, the time information can be the moment corresponding to HRTD, that is, the moment corresponding to HRTD included in the first differential correction number.

[0309] The time information corresponding to RPD; for example, the time information can be the moment corresponding to RPD, that is, the moment corresponding to RPD included in the first differential correction number.

[0310] In some embodiments, the granularity of the HRTD is less than T c ; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the Fast Fourier Transform (FFT).

[0311] For example, the value range of Δf max includes but is not limited to {15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz}, for example, the maximum subcarrier spacing of the 5G NR system is 480 kHz.

[0312] For example, the value range of N f includes but is not limited to {2048, 4096, 8192}.

[0313] In some embodiments, before the terminal receives the first message sent by the first core network device, it further includes:

[0314] The terminal sends a second message to the first core network device; where the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

[0315] For example, the second message can be a positioning request message, or it can also be other messages etc. For example, taking the CPP positioning method as an example, the second message can be called the UE-based NR CPP positioning request message, and the embodiments of the present application are not limited thereto.

[0316] In this embodiment, the terminal may 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 that the terminal needs or wants the first core network device to provide. That is, the terminal may request the first core network device to provide which type or types of differential correction numbers. In this way, the first core network device may send the first message to the terminal based on the type of differential correction number expected, needed, or requested by the terminal.

[0317] For example: The type of differential correction number 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 example, if the terminal informs the first core network device through the second message that the types of differential correction numbers it expects, needs, or requests the first core network device to provide are HRTD and the time change rate of HRTD, then the first core network device may carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of this application are not limited thereto.

[0318] In some embodiments, when the first core network device sends the first message to the terminal, it may send the first message to the terminal in a periodic manner, or it may also send the first message to the terminal in an aperiodic manner, etc. The embodiments of this application are not limited thereto.

[0319] In some embodiments, the first core network device sending the first message to the terminal may be to send it alone using a newly defined message. For example, taking the CPP positioning method as an example, this first message may be called the NR CPP differential correction number message, or other messages, etc. The embodiments of this application are not limited thereto.

[0320] In some embodiments, the first core network device may also send the first message based on an existing message. For example: The first core network device may reuse the message for sending positioning assistance data to carry the first differential correction number. For example, the first differential correction number may be sent together with the positioning assistance data, that is, the first message carries the first differential correction number and also carries the positioning assistance data. Or, the first differential correction number is added to the positioning assistance data, that is, the first message carries the positioning assistance data, and the positioning assistance data includes the first differential correction number. For example, taking the UE-based positioning method as an example, this positioning assistance data is the UE-based positioning assistance data.

[0321] Another example: The first core network device may reuse the message for requesting the terminal's capabilities to carry the first differential correction number, that is, the first message is used to request the terminal's capabilities.

[0322] In some embodiments, the terminal performs positioning calculation according to the first differential correction number, including:

[0323] The terminal eliminates the phase deviation and / or timing deviation in the RSCPD measurement according to the first differential correction number to obtain a first RSCPD.

[0324] The terminal performs positioning calculation according to the first RSCPD.

[0325] For example: The terminal can eliminate the timing deviation in the RSCPD measurement according to the HRTD and / or the time change rate of HRTD of the non-reference TRP and the reference TRP, and / or, the terminal can eliminate the phase deviation in the RSCPD measurement according to the RPD and / or the time change rate of RPD of the non-reference TRP and the reference TRP, etc., to improve the positioning accuracy.

[0326] The following describes the process of the information processing method for the target UE:

[0327] Step 1: The target UE sends a "UE-based NR CPP" positioning request message (i.e., the second message) to the LMF. The positioning request message includes the type of differential correction number that the terminal expects the LMF to provide.

[0328] Here, "expect" can be understood as the type of differential correction number that the terminal needs or wants the first core network device to provide, or it can also be called the type of differential correction number that the terminal requests the first core network device to provide. For example: The type of differential correction number 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 example, if the terminal notifies the first core network device through the second message that the type of differential correction number it expects or needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present application are not limited thereto.

[0329] Step 2: The target UE receives the first message of the first differential correction number notified by the LMF, and uses the first differential correction number to eliminate the initial phase deviation RPD between different TRPs and the initial timing deviation RTD between different TRPs included in the RSCPD measurement. The target UE performs UE-based NR CPP positioning calculation based on the differential positioning measurement quantity RSCPD after eliminating the deviation.

[0330] The terminal involved in the embodiments of the present application may be a device that provides voice and / or data connectivity to users, such as a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be referred to as a user equipment (UE). The wireless terminal can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device that exchanges voice and / or data with the radio access network. For example, devices such as 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 can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, which is not limited in the embodiments of the present application.

[0331] As Figure 2 shown, the embodiments of the present application provide an information processing method, including the following steps:

[0332] 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:

[0333] The HRTD between the non-reference TRP and the reference TRP;

[0334] The RPD between the non-reference TRP and the reference TRP;

[0335] The time change rate of the HRTD;

[0336] Time change rate of RPD.

[0337] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments of the present application are not limited thereto.

[0338] In some embodiments, the first differential correction number may be provided by the TRP or PRU, or determined by the first core network device according to the data provided by the TRP or PRU. The following will be specifically described in conjunction with embodiments, and the embodiments of the present application are not limited thereto.

[0339] 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: 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, which is the "first differential correction number". In this way, the terminal can eliminate the timing deviation of the measurement quantity based on the HRTD to ensure the timing deviation accuracy that meets the positioning policy requirements. The terminal can also obtain the RTD at the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of positioning. The terminal can also implement a double-differential function based on the RPD and / or the time change rate of the RPD, so as to reduce the increase in PRU load and signaling overhead caused by the terminal obtaining the reference signal measurement quantity through the air interface signaling to determine the phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load, and large signaling overhead existing in the current positioning method.

[0340] In some embodiments, the first message further carries at least one of the following information:

[0341] TRP transmission timing error group identifier (TRP Tx TEG ID);

[0342] TRP transmission antenna identifier (TRP Tx antenna ID);

[0343] Antenna reference point identifier (ARP ID);

[0344] Time information corresponding to the HRTD; for example: this time information may be the moment corresponding to the HRTD, that is, the moment corresponding to the HRTD included in the first differential correction number;

[0345] Time information corresponding to the RPD; for example: this time information may be the moment corresponding to the RPD, that is, the moment corresponding to the RPD included in the first differential correction number.

[0346] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform (FFT).

[0347] For example: The value range of Δf max includes but is not limited to {15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz}. For example, the maximum subcarrier spacing of the 5G NR system is 480 kHz.

[0348] For example: The value range of N f includes but is not limited to {2048, 4096, 8192}.

[0349] In some embodiments, before the first core network device sends a first message to the terminal, it further includes:

[0350] 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.

[0351] For example: The second message can be a positioning request message, or it can also be other messages other than this. For example, taking the CPP positioning method as an example, the second message can be called a UE-based NR CPP positioning request message, and the embodiments of the present application are not limited thereto.

[0352] In this embodiment, the terminal can inform the first core network device of the type of differential correction number that it expects the first core network device to provide, or it can be said that the type of differential correction number that the terminal needs or wants the first core network device to provide, etc. That is, the terminal can request the first core network device to provide which or what types of differential correction numbers. In this way, the first core network device can send the first message to the terminal based on the type of differential correction number expected or needed or requested by the terminal.

[0353] For example: The type of differential correction number 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 example, if the terminal informs the first core network device through the second message that the type of differential correction number it expects or needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present application are not limited thereto.

[0354] In some embodiments, when the first core network device sends the first message to the terminal, the first message can be sent to the terminal in a periodic manner, or can also be sent to the terminal in an aperiodic manner, etc. The embodiments of the present application are not limited thereto.

[0355] In some embodiments, the first core network device sending the first message to the terminal may be to send it alone using a newly defined message. For example, taking the CPP positioning method as an example, this first message may be referred to as an NR CPP differential correction number message, or other messages, etc. The embodiments of the present application are not limited thereto.

[0356] In some embodiments, the first core network device sending the first message to the terminal can also be based on an existing message. For example: The first core network device can reuse the message for sending positioning assistance data to carry the first differential correction number. For example, the first differential correction number can be sent together with the positioning assistance data, that is, the first message carries the first differential correction number and also carries the positioning assistance data. Or, add the first differential correction number to the positioning assistance data, that is, the first message carries the positioning assistance data, and the positioning assistance data includes the first differential correction number. For example, taking the UE-based positioning method as an example, this positioning assistance data is also the UE-based positioning assistance data.

[0357] Another example: The first core network device can reuse the message for requesting the terminal's capabilities to carry the first differential correction number, that is, the first message is used to request the terminal's capabilities.

[0358] In some embodiments, when the first differential correction number is determined by the first core network device according to the data provided by the TRP or PRU, that is, before the first core network device sends the first message to the terminal, it further includes: The first core network device determines the first differential correction number.

[0359] As an implementation method: Determine the first differential correction number based on the direct report of the TRP.

[0360] In some embodiments, the first core network device determining the first differential correction number includes:

[0361] 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;

[0362] The first core network device determines the first differential correction number according to the second differential correction number;

[0363] Wherein, the second differential correction number includes at least one of the following:

[0364] The HRTD of the said TRP and the reference TRP;

[0365] The RPD of the said TRP and the reference TRP;

[0366] The time change rate of the HRTD;

[0367] The time change rate of the RPD.

[0368] In some embodiments, the first core network device obtains the second differential correction number from one or more TRPs, which can be obtained periodically or once. In other words, one or more TRPs can report the second differential correction number in a periodic manner, or one or more TRPs can report the second differential correction number when a first condition is met.

[0369] For example: one or more TRPs can each calculate the second differential correction number of this TRP relative to the 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 can also calculate the second differential correction number based on the information measured from the PRS sent between TRPs, etc. The embodiments of this application are not limited thereto.

[0370] Among them, for the periodic manner of reporting the second differential correction number, the reporting period of the second differential correction number can be defined and configured. For the manner of reporting the second differential correction number when the first condition is met, the reporting threshold of the second differential correction number and / or the measurement quality indication can be defined and configured, that is, when exceeding a certain threshold, the TRP reports the second differential correction number, otherwise the TRP does not report the second differential correction number.

[0371] In some embodiments, the first condition includes at least one of the following:

[0372] The HRTD is greater than a first threshold;

[0373] The RPD is greater than a second threshold;

[0374] The measurement quality indication of the RSTD is greater than a third threshold;

[0375] The measurement quality indication of the RSCPD is greater than a fourth threshold.

[0376] In some embodiments, before the first core network device receives the third message sent by one or more TRPs, it further includes:

[0377] The first core network device sends a fourth message to one or more TRPs; wherein, the fourth message is used to request to obtain the first differential correction number, and the fourth message carries the relevant information of the reference TRP.

[0378] In this embodiment, the first core network device may send a fourth message to one or more TRPs to request the one or more TRPs to provide a first differential correction number. In this way, the one or more TRPs may send a second differential correction number to the first core network device based on the request of the first core network device. For example: Taking the CPP positioning method as an example, the fourth message may be referred to as an NRCPP differential correction number request message, or it may also be other messages, and the embodiments of the present application are not limited thereto.

[0379] In some embodiments, the second differential correction numbers reported by one or more TRPs are used to determine the first differential correction number.

[0380] Specifically, the first core network device determines the first differential correction number according to the second differential correction number, including:

[0381] If the second differential correction number is sent by one TRP, the first core network device determines the second differential correction number as the first differential correction number;

[0382] And / or,

[0383] If the second differential correction number is sent by multiple TRPs, the first core network device performs an averaging or combining process on the second differential correction numbers to obtain the first differential correction number.

[0384] For example: When the first core network device receives the second differential correction number sent by one TRP, or in other words, when only one TRP sends the second differential correction number, the second differential correction number is the first differential correction number that the first core network device needs to provide to the terminal.

[0385] Another example: When the first core network device receives the second differential correction numbers sent by multiple TRPs, or in other words, when multiple TRPs send the second differential correction numbers, the first core network device needs to further process the second differential correction numbers sent by the multiple TRPs to obtain the first differential correction number. For example: The first core network device performs an averaging or combining process on the second differential correction numbers sent by multiple TRPs, etc., to obtain the first differential correction number.

[0386] It should be noted that when the first core network device performs an averaging or combining process on the second differential correction numbers sent by multiple TRPs, it is to perform an averaging or combining process, etc. on the second differential correction numbers of the same non-reference TRP relative to the reference TRP. For example, the first core network device performs an averaging or combining process, etc. on the second differential correction numbers of TRP 1 relative to the reference TRP sent by multiple TRPs.

[0387] As another implementation manner: The first differential correction number is determined based on the direct reporting of PRU.

[0388] In some embodiments, the first core network device determines the first differential correction number, including:

[0389] 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;

[0390] The first core network device determines the first differential correction number according to the second differential correction number;

[0391] Wherein, the second differential correction number includes at least one of the following:

[0392] HRTD of non-reference TRP and reference TRP;

[0393] RPD of non-reference TRP and reference TRP;

[0394] Time change rate of HRTD;

[0395] Time change rate of RPD.

[0396] In some embodiments, the first core network device obtains the second differential correction number from one or more PRUs, which can be obtained periodically or once.

[0397] For example: one or more PRUs measure the downlink PRS from different TRPs within the same time window, and obtain the reference signal measurement and the measurement quality indication. Wherein, the reference signal measurement includes: RSTD measurement and / or RSCPD measurement; the measurement quality indication includes: measurement quality indication of RSTD and / or measurement quality indication of RSCPD. The PRU determines whether the quality of the RSTD and RSCPD measurements meets the accuracy requirements of the differential correction number through the measurement quality indication. If it meets the requirements, the PRU performs a differential operation on the RSTD measurement and the ideal value of RSTD to obtain HRTD, and / or performs a differential operation on the RSCPD measurement and the ideal value of RSCPD to obtain RPD. Or, the PRU can also obtain the time change rate of HRTD and / or RPD through the RTD and / or RPD at different times, that is, obtain the second differential correction number. If it does not meet the requirements, the PRU discards the current RSTD and RSCPD measurements.

[0398] In some embodiments, before the first core network device receives a fifth message sent by one or more PRUs, it further includes:

[0399] The first core network device sends a sixth message to one or more PRUs; wherein, the sixth message is used to request to obtain the first differential correction number, and the sixth message carries the relevant information of the reference TRP.

[0400] In this embodiment, the first core network device may send a sixth message to one or more PRUs to request the one or more PRUs to provide a first differential correction number. In this way, the one or more PRUs may send a second differential correction number to the first core network device based on the request of the first core network device. For example: taking the CPP positioning method as an example, the sixth message may be referred to as an NRCPP differential correction number request message, or it may also be other messages, which is not limited in this embodiment of the present application.

[0401] In some embodiments, the second differential correction numbers reported by one or more PRUs are used to determine the first differential correction number.

[0402] Specifically, the first core network device determines the first differential correction number according to the second differential correction number, including:

[0403] If the second differential correction number is sent by a single TRP or a single PRU, the first core network device determines the second differential correction number as the first differential correction number;

[0404] And / or,

[0405] If the second differential correction number is sent by multiple TRPs or multiple PRUs, the first core network device performs an averaging or combining process on the second differential correction numbers to obtain the first differential correction number.

[0406] For example: when the first core network device receives the second differential correction number sent by a single PRU, or in other words, when only one PRU sends the 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.

[0407] Another example: when the first core network device receives the second differential correction numbers sent by multiple PRUs, or in other words, when multiple PRUs send the second differential correction numbers, the first core network device needs to further process the second differential correction numbers sent by the multiple PRUs to obtain the first differential correction number. For example: the first core network device performs an averaging or combining process on the second differential correction numbers sent by multiple PRUs, etc., to obtain the first differential correction number.

[0408] It should be noted that when the first core network device performs an averaging or combining process on the second differential correction numbers sent by multiple PRUs, it is an averaging or combining process on the second differential correction numbers of the same non-reference TRP relative to the reference TRP, etc. For example, the first core network device performs an averaging or combining process on the second differential correction numbers of TRP 1 relative to the reference TRP sent by multiple PRUs, etc.

[0409] As another implementation manner: the first differential correction number is determined based on the indirect reporting of the PRU.

[0410] In some embodiments, the first core network device determines the first differential correction number, including:

[0411] 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;

[0412] When the measurement quality indication meets the differential correction accuracy requirement, the first core network device determines the first differential correction number according to the reference signal measurement quantity.

[0413] In some embodiments, the first core network device obtains the reference signal measurement quantity and the measurement quality indication from one or more PRUs, which can be obtained periodically or once.

[0414] For example: one or more PRUs measure the downlink PRS from different TRPs within the same time window, obtain the reference signal measurement quantity and the measurement quality indication, and report them to the first core network device.

[0415] In some embodiments, the reference signal measurement quantity includes: RSTD measurement quantity, and / or, RSCPD measurement quantity; in some embodiments, the measurement quality indication includes: measurement quality indication of RSTD, and / or, measurement quality indication of RSCPD.

[0416] For example: the first core network device receives the reference signal measurement quantity and the measurement quality indication sent by one or more PRUs, and determines whether the quality of the current RSTD and RSCPD measurement quantities meets the accuracy requirement of the differential correction number through the measurement quality indication. If it meets, the first core network device determines the first differential correction number according to the reference signal measurement quantity. Or if it does not meet, the RSTD and RSCPD measurement quantities are discarded.

[0417] In some embodiments, the first core network device determines the first differential correction number according to the reference signal measurement quantity, including:

[0418] The first core network device processes the reference signal measurement quantity to obtain a second differential correction number;

[0419] If the reference signal measurement quantity is sent by one PRU, the first core network device determines the second differential correction number as the first differential correction number; and / or, if the reference signal measurement quantity is sent by multiple PRUs, the first core network device performs an averaging or combining process on the second differential correction numbers corresponding to the multiple PRUs to obtain the first differential correction number.

[0420] For example, when the first core network device receives the reference signal measurement quantity sent by one PRU, or in other words, when only one PRU sends the reference signal measurement quantity, the second differential correction number obtained by the first core network device based on the reference signal measurement quantity sent by this one PRU is the first differential correction number that the first core network device needs to provide to the terminal.

[0421] For another example, when the first core network device receives the reference signal measurement quantities sent by multiple PRUs, or in other words, when there are multiple PRUs sending the reference signal measurement quantities, the first core network device needs to further process the second differential correction numbers obtained by processing the reference signal measurement quantities sent by the multiple PRUs to obtain the first differential correction number. For example: The first core network device performs averaging or merging processing, etc., on the second differential correction numbers obtained by processing the reference signal measurement quantities sent by multiple PRUs to obtain the first differential correction number.

[0422] It should be noted that the first core network device performs averaging or merging processing on the second differential correction numbers obtained by processing the reference signal measurement quantities sent by multiple PRUs, which is to perform averaging or merging processing, etc., on the second differential correction numbers of the same non-reference TRP relative to the reference TRP. For example, the first core network device performs averaging or merging processing, etc., on the second differential correction number of TRP 1 relative to the reference TRP obtained by processing the reference signal measurement quantities sent by multiple PRUs.

[0423] In some embodiments, the first core network device processes the reference signal measurement quantity to obtain a second differential correction number, including at least one of the following:

[0424] The first core network device performs a difference operation on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD;

[0425] The first core network device performs a difference operation on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD;

[0426] The first core network device determines the time change rate of HRTD according to the HRTD at different times;

[0427] The first core network device determines the time change rate of RPD according to the RPD at different times.

[0428] For example: The first core network device receives reference signal measurement quantities and measurement quality indications sent by one or more PRUs. When it is determined through the RSTD measurement quality indication that the quality of the current RSTD measurement quantity meets the accuracy requirement of the differential correction number, a differential operation is performed on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD, and / or the time change rate of HRTD is determined based on HRTD at different times. Or if the accuracy requirement of the differential correction number is not met, the RSTD measurement quantity is discarded.

[0429] For another example: The first core network device receives reference signal measurement quantities and measurement quality indications sent by one or more PRUs. When it is determined through the RSCPD measurement quality indication that the quality of the current RSCPD measurement quantity meets the accuracy requirement of the differential correction number, a differential operation is performed on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD, and / or the time change rate of RPD is determined based on RPD at different times. Or if the accuracy requirement of the differential correction number is not met, the RSCPD measurement quantity is discarded.

[0430] In some embodiments, before the first core network device receives a fifth message sent by one or more PRUs, it further includes:

[0431] The first core network device sends a sixth message to one or more PRUs; wherein, the sixth message is used to request to obtain a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0432] In this embodiment, the first core network device may 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 may, based on the request of the first core network device, send a second differential correction number to the first core network device. For example: Taking the CPP positioning method as an example, this sixth message may be referred to as an NRCPP differential correction number request message, or it may also be other messages, which is not limited in this embodiment of the present application.

[0433] In some embodiments, the first core network device sending the sixth message to one or more PRUs may be before, after, or at the same time as the downlink positioning assistance data message.

[0434] The following takes the first core network device as the LMF as an example to illustrate the process of the information processing method executed by the LMF:

[0435] Step 1: The LMF receives the "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target terminal (UE), where the positioning request message includes the "NR CPP differential correction number" (i.e., the differential correction number type) expected by the target UE from the LMF.

[0436] Here, "expectation" can be understood as the type of differential correction number that the terminal needs or wants the first core network device to provide, or it can also be referred to as the type of differential correction number that the terminal requests the first core network device to provide. For example, the type of differential correction number 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 example, if the terminal notifies the first core network device through the second message that the types of differential correction numbers it expects or needs or requests the first core network device to provide are HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present application are not limited thereto.

[0437] Step 2: The LMF sends a "NR CPP differential correction number" request message (i.e., the fourth message) to one or more TRPs, and / or sends a "NR CPP differential correction number" request message (i.e., the sixth message) to one or more PRUs (or reference UEs), where the request message contains relevant information of the reference TRP. The request message can be sent before, after, or at the same time as the downlink positioning assistance data message sent to the PRU.

[0438] Step 3: The LMF obtains the first differential correction number in one of the following three ways.

[0439] Among them, the first differential correction number includes at least one of the following:

[0440] The HRTD of the non-reference TRP and the reference TRP;

[0441] The RPD of the non-reference TRP and the reference TRP;

[0442] The time change rate of HRTD;

[0443] The time change rate of RPD.

[0444] Method 1: Direct reporting based on the TRP: The LMF determines the first differential correction number by receiving the second differential correction number reported by one TRP. Or the LMF receives the second differential correction numbers reported by multiple TRPs and further processes them to obtain the first differential correction number.

[0445] Among them, the second differential correction numbers reported by multiple TRPs can be calculated based on pre-saved known information or information obtained by measuring the PRS sent between TRPs. The reporting methods of the second differential correction numbers include: periodic reporting and / or aperiodic reporting. For periodic reporting, it is necessary to define and configure the reporting period of the second differential correction numbers. For aperiodic reporting, the reporting thresholds of the second differential correction numbers and / or the measurement quality indication can be defined and configured, that is: when the second differential correction numbers and / or the measurement quality indication exceed a certain threshold, the TRP reports the second differential correction numbers; otherwise, the TRP does not report the second differential correction numbers.

[0446] Method 2, the direct method of PRU: The LMF determines the first differential correction number by receiving the second differential correction number reported by a PRU. Or the LMF receives the second differential correction numbers reported by multiple PRUs and further processes them to obtain the first differential correction number.

[0447] Method 3, the indirect reporting of PRU: The LMF receives the RSTD and RSCPD measurement quantities and the measurement quality indication reported by one or more PRUs.

[0448] Step 4, the LMF notifies the target UE of the first differential correction number.

[0449] The first message of the first differential correction number notified by the LMF to the target UE can be carried by UE-based positioning assistance data, or carried by the message for sending UE-based positioning assistance data, or carried by the positioning request message, or a newly defined message, etc. For example: the first message can be in the form of broadcast, or in the form of unicast or multicast, etc. The first message can be periodic or aperiodic.

[0450] As Figure 3 shown, the embodiments of the present application provide an information processing method, including the following steps:

[0451] Step 31: The TRP sends a third message to the first core network device; among them, the third message carries the second differential correction number;

[0452] Among them, the second differential correction number includes at least one of the following:

[0453] The HRTD between the TRP and the reference TRP;

[0454] The relative phase deviation RPD between the TRP and the reference TRP;

[0455] The time change rate of the HRTD;

[0456] The time change rate of the RPD.

[0457] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments of the present application are not limited thereto.

[0458] In some embodiments, the second differential correction number reported by the TRP to the first core network device is used to determine the first differential correction number. For specific details, refer to the embodiments on the first core network device side, which will not be elaborated here.

[0459] In some embodiments, the granularity of the HRTD is less than T c ; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the FFT.

[0460] For example: The value range of Δf max includes but is not limited to {15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz}. For example, the maximum subcarrier spacing of the 5G NR system is 480 kHz.

[0461] For example: The value range of N f includes but is not limited to {2048, 4096, 8192}.

[0462] In some embodiments, before the transceiver point TRP sends the third message to the first core network device, it further includes:

[0463] The TRP receives the fourth message sent by the first core network device; where the fourth message is used to request to obtain the first differential correction number, and the fourth message carries the relevant information of the reference TRP.

[0464] In this embodiment, the first core network device may send the fourth message to one or more TRPs to request one or more TRPs to provide the first differential correction number. In this way, one or more TRPs may, based on the request of the first core network device, send the second differential correction number to the first core network device. For example: Taking the CPP positioning method as an example, this fourth message may be referred to as the NRCPP differential correction number request message, or it may be other messages, and the embodiments of the present application are not limited thereto.

[0465] In some embodiments, the transceiver point TRP sending the third message to the first core network device includes:

[0466] The TRP sends the third message to the first core network device in a periodic manner;

[0467] Or,

[0468] When the first condition is satisfied, the TRP sends the third message to the first core network device;

[0469] Wherein, the first condition includes at least one of the following:

[0470] HRTD is greater than a first threshold;

[0471] RPD is greater than a second threshold;

[0472] The measurement quality indication of RSTD is greater than a third threshold;

[0473] The measurement quality indication of RSCPD is greater than a fourth threshold.

[0474] In this embodiment, the first core network device obtains the second differential correction number from one or more TRPs, which can be obtained periodically or once. In other words, one or more TRPs can report the second differential correction number in a periodic manner, or one or more TRPs can report the second differential correction number when the first condition is satisfied.

[0475] For example: one or more TRPs can each calculate the second differential correction number of the TRP relative to the 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 the known information saved in advance, or can also calculate the second differential correction number based on the information measured by the PRS sent between TRPs, etc., and the embodiments of the present application are not limited thereto.

[0476] Wherein, for the periodic manner of reporting the second differential correction number, the reporting period of the second differential correction number can be defined and configured. For the manner of reporting the second differential correction number when the first condition is satisfied, the reporting threshold of the second differential correction number and / or the measurement quality indication can be defined and configured, that is, when exceeding a certain threshold, the TRP reports the second differential correction number, otherwise the TRP does not report the second differential correction number.

[0477] In the embodiments of the present application, the TRP sends a third message carrying the second differential correction number to the first core network device. The first core network device determines the first differential correction number according to the second differential correction number and sends a first message to the terminal. The first message carries at least one of the following items of the non-reference TRP and the reference TRP: HRTD, RPD of the non-reference TRP and the reference TRP, time change rate of HRTD, and time change rate of RPD, namely, the "first differential correction number". In this way, the terminal can eliminate the timing deviation of the measurement quantity based on HRTD to ensure the timing deviation accuracy that meets the positioning strategy requirements. The terminal can also obtain the RTD at the actual positioning moment based on the time change rate of HRTD to ensure the accuracy of positioning. The terminal can also implement the double-differential function based on RPD and / or the time change rate of RPD, so as to reduce the increase in PRU load and signaling overhead caused by the terminal obtaining the reference signal measurement quantity through air interface signaling to determine the phase deviation and / or timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load, and large signaling overhead in the current positioning method.

[0478] The following describes the process of the PRU execution information processing method:

[0479] Step 1: The TRP receives the "first differential correction number request" message (i.e., the fourth message) from the LMF and calculates the second differential correction number. The request message contains the relevant information of the reference TRP. Multiple TRPs can calculate the second differential correction number based on the pre-saved known information or the information measured based on the PRS signals sent to each other.

[0480] Step 2: The TRP reports the second differential correction number to the LMF in a direct manner. The reporting method of the second differential correction number includes: periodic reporting and / or aperiodic reporting. For periodic reporting, it is necessary to define and configure the reporting period of the second differential correction number. For aperiodic reporting, it is possible to define and configure the reporting threshold of the second differential correction number and / or the measurement quality, that is, when the second differential correction number and / or the measurement quality exceed a certain threshold, the TRP reports the "first differential correction number", otherwise, the TRP does not report the second differential correction number.

[0481] Step 3: The TRP sends a downlink PRS signal to the PRU and the target UE.

[0482] In some embodiments, the TRP may be a base station, or one base station may correspond to one or more TRPs.

[0483] The base station involved in the embodiments of the present application may include multiple cells that provide services to terminals. Depending on the specific application scenarios, the base station may also be referred to as an access point, or may be a device in the access network that communicates with wireless terminal devices through one or more sectors over the air interface, or have other names. The base station can be used to mutually replace the received air frames and Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The base station can also coordinate the management of the attributes of the air interface. For example, the base station involved in the embodiments of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or may be a NodeB in a Wide-band Code Division Multiple Access (WCDMA), or may also be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), or may be a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc. The embodiments of the present application do not limit this. In some network architectures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0484] As Figure 4 shown, the embodiments of the present application provide an information processing method, including the following steps:

[0485] 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;

[0486] Wherein, the second differential correction number includes at least one of the following:

[0487] The HRTD between the non-reference TRP and the reference TRP;

[0488] RPD of non-reference TRP and reference TRP

[0489] Time change rate of HRTD

[0490] Time change rate of RPD

[0491] In some embodiments, the first core network device may be an LMF network element or other core network elements, etc., and the embodiments of the present application are not limited thereto.

[0492] 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.

[0493] In some embodiments, the reference signal measurement quantity includes: relative signal arrival time difference (RSTD) measurement quantity, and / or, reference signal carrier phase difference (RSCPD) measurement quantity;

[0494] and / or

[0495] The measurement quality indication includes: measurement quality indication of RSTD, and / or, measurement quality indication of RSCPD.

[0496] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform (FFT).

[0497] For example: the value range of Δf max includes but is not limited to {15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz}, such as the maximum subcarrier spacing of the 5G NR system is 480 kHz.

[0498] For example: the value range of N f includes but is not limited to {2048, 4096, 8192}.

[0499] In some embodiments, before the positioning reference unit (PRU) sends a fifth message to the first core network device, it further includes:

[0500] The PRU receives a sixth message sent by the first core network device; wherein, the sixth message is used to request to obtain the first differential correction number, and the sixth message carries the relevant information of the reference TRP.

[0501] In this embodiment, the first core network device may 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 may send a second differential correction number to the first core network device based on the request of the first core network device. For example, taking the CPP positioning method as an example, the sixth message may be referred to as an NRCPP differential correction number request message, or it may be other messages, which is not limited in the embodiments of the present application.

[0502] In some embodiments, the positioning reference unit PRU sending a fifth message to the first core network device includes:

[0503] The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement and the measurement quality indication;

[0504] The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement and the measurement quality indication.

[0505] For example: one or more PRUs measure the downlink PRS from different TRPs within the same time window, obtain the reference signal measurement and the measurement quality indication, and report them to the first core network device.

[0506] In some embodiments, the positioning reference unit PRU sending a fifth message to the first core network device includes:

[0507] The PRU measures the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement and the measurement quality indication;

[0508] When the measurement quality indication meets the differential correction accuracy requirement, the PRU processes the reference signal measurement to obtain the second differential correction number;

[0509] The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number.

[0510] In some embodiments, the PRU processing the reference signal measurement to obtain the second differential correction number includes at least one of the following:

[0511] The PRU performs a differential operation on the RSTD measurement and the RSTD ideal value to obtain HRTD;

[0512] The PRU performs a differential operation on the RSCPD measurement and the RSCPD ideal value to obtain RPD;

[0513] The PRU determines the time change rate of HRTD according to the HRTD at different times;

[0514] The PRU determines the time change rate of the RPD according to the RPD at different times.

[0515] For example: one or more PRUs measure the downlink PRS from different TRPs within the same time window, and obtain the reference signal measurement and the measurement quality indication. Among them, the reference signal measurement includes: the RSTD measurement and / or the RSCPD measurement; the measurement quality indication includes: the measurement quality indication of the RSTD and / or the measurement quality indication of the RSCPD. The PRU determines whether the quality of the RSTD measurement and the RSCPD measurement meets the accuracy requirements of the differential correction number through the measurement quality indication. If it meets the requirements, the PRU performs a differential operation on the RSTD measurement and the ideal value of the RSTD to obtain the HRTD, and / or performs a differential operation on the RSCPD measurement and the ideal value of the RSCPD to obtain the RPD. Alternatively, the PRU can also obtain the time change rate of the HRTD and / or the RPD through the RTD and / or the RPD at different times, that is, obtain the second differential correction number. If it does not meet the requirements, the PRU discards the current RSTD and RSCPD measurements.

[0516] In the embodiment of the present application, the PRU sends a five-message carrying the second differential correction number or carrying the reference signal measurement and the measurement quality indication to the first core network device. The first core network device determines the first differential correction number according to the second differential correction number, or the reference signal measurement and the measurement quality indication, and sends a first message to the terminal; wherein, the first message carries at least one of the following items of "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. In this way, the terminal can eliminate the timing deviation of the measurement based on the HRTD to ensure the timing deviation accuracy that meets the positioning strategy requirements. The terminal can also know the RTD at the actual positioning moment based on the time change rate of the HRTD to ensure the accuracy of positioning. The terminal can also implement the double-differential function based on the RPD and / or the time change rate of the RPD, so as to reduce the increase in the PRU load and the signaling overhead caused by the terminal obtaining the reference signal measurement through the air interface signaling to determine the phase deviation and / or the timing deviation, thereby solving the problems of poor positioning accuracy, large PRU load, and large signaling overhead existing in the current positioning method.

[0517] The following describes the process of the PRU executing the information processing method:

[0518] Step 1: The PRU (or the reference UE) receives the "first differential correction number request" message (i.e., the sixth message) from the LMF. Among them, the request message contains the relevant information of the reference TRP, and this message can be sent before, after, or at the same time as the downlink positioning assistance data message.

[0519] Step 2: Multiple PRUs measure the downlink PRS signals from different TRPs within the same time window notified by the LMF, obtain the RSTD and RSCPD measurement quantities and measurement quality indicators, further calculate to obtain HRTD and RPD, and obtain the time change rates of HRTD and RPD through the RTD and RPD at different times.

[0520] In some embodiments, the PRU determines whether the quality of the current RSTD and RSCPD measurement quantities meets the accuracy requirements of the "NR CPP differential correction number" through the measurement quality indicator.

[0521] If it is satisfied, the PRU performs a differential operation on the RSTD and RSCPD measurement quantities and the ideal values of RSTD and RSCPD to obtain HRTD and RPD, and obtains the time change rates of HRTD and RPD through the RTD and RPD at different times. Proceed to Step 3.

[0522] If it is not satisfied, the PRU discards the current RSTD and RSCPD measurement quantities.

[0523] Step 3: The PRU reports the second differential correction number to the LMF in a direct manner or an indirect manner respectively, or reports the reference signal measurement quantity and measurement quality indicator for calculating the first differential correction number.

[0524] Direct manner: One or more PRUs report the second differential correction number to the LMF.

[0525] Indirect manner: One or more PRUs report the RSTD and RSCPD measurement quantities, as well as the measurement quality indicator, to the LMF.

[0526] As Figure 5 shown, an interaction flowchart of an information processing method is given, which specifically includes:

[0527] Step 1A: The UE is in the RRC connected state;

[0528] Step 1B: The PRU is in the RRC connected state;

[0529] Step 2A: The LMF requests the positioning capability from the UE;

[0530] Step 2B: The LMF requests the positioning capability from the PRU;

[0531] Step 3A: The UE reports the positioning capability;

[0532] Step 3B: The PRU reports the positioning capability;

[0533] Step 4A: The UE requests positioning assistance data ("UE-based NR CPP" positioning request) from the LMF;

[0534] Step 4B, the PRU requests positioning assistance data from the LMF;

[0535] Step 5B, the LMF sends a UE-based CPP information request to the gNB / TRP;

[0536] Step 6B, the gNB / TRP sends a UE-based CPP information response (PRS configuration information) to the LMF;

[0537] Step 7B, the LMF provides positioning assistance data (PRS configuration information) to the PRU;

[0538] Step 8B, the gNB / TRP sends a PRS reference signal;

[0539] Step 9B, the PRU measures the PRS reference signal;

[0540] Step 10B, the LMF requests location-related information from the PRU;

[0541] Step 11B, the PRU measures the downlink PRS to obtain HRTD, RIPD, and the time change rates of HRTD and RIPD;

[0542] Step 12B, the PRU reports the first differential correction number, as well as the RSCPD measurement, the PRU location, and the timestamp;

[0543] Step 5A, the LMF sends a UE-based CPP information request to the gNB / TRP;

[0544] Step 6A, the gNB / TRP sends a UE-based CPP information response (PRS configuration information) to the LMF;

[0545] Step 7A, the LMF provides positioning assistance data (PRS configuration information) to the UE;

[0546] Step 8A, the gNB / TRP sends a PRS reference signal;

[0547] Step 9A, the UE measures the PRS reference signal;

[0548] Step 10A, request location-related information from the UE;

[0549] Step 11A, the UE calculates the location of the UE using the obtained positioning measurement values and base station location information, etc.;

[0550] Step 12A, the UE reports the positioning solution result.

[0551] The interaction process of the information processing method of the present application is described below in conjunction with specific embodiments:

[0552] Embodiment 1:

[0553] For the LMF side:

[0554] Step 1, the LMF receives the "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target terminal (UE). Among them, the positioning request message contains the "NR CPP differential correction number" (i.e., the differential correction number type) that the target UE expects the LMF to provide.

[0555] Here, "expect" can be understood as the differential correction number type that the terminal needs or wants the first core network device to provide, or it can also be called the differential correction number type that 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 example, if the terminal notifies the first core network device through the second message that the differential correction number type it expects or needs or requests the first core network device to provide is: HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present application are not limited thereto.

[0556] Step 2, the LMF sends a "NR CPP differential correction number" request message (i.e., the fourth message) to one or more TRPs, and / or sends a "NR CPP differential correction number" request message (i.e., the sixth message) to one or more PRUs (or reference UEs). Among them, the request message contains the relevant information of the reference TRP. The request message can be sent before, after, or at the same time as the downlink positioning assistance data message sent to the PRU.

[0557] Step 3, the LMF obtains the first differential correction number through the following method 1.

[0558] Among them, the first differential correction number includes at least one of the following:

[0559] HRTD of non-reference TRP and reference TRP;

[0560] RPD of non-reference TRP and reference TRP;

[0561] Time change rate of HRTD;

[0562] Time change rate of RPD.

[0563] Method 1, direct reporting based on TRP: The LMF determines the second differential correction number reported by a TRP as the first differential correction number. Or the LMF receives the second differential correction numbers reported by multiple TRPs and further processes them to obtain the first differential correction number.

[0564] Among them, the second differential correction numbers reported by multiple TRPs can be calculated based on pre-stored known information or information measured based on PRSs sent between TRPs. The reporting methods of the second differential correction numbers include: periodic reporting and / or aperiodic reporting methods. For periodic reporting, it is necessary to define and configure the reporting period of the second differential correction numbers. For aperiodic reporting, the reporting thresholds of the second differential correction numbers and / or measurement quality indicators can be defined and configured, that is: when the second differential correction numbers and / or measurement quality indicators exceed a certain threshold, the TRP reports the second differential correction numbers; otherwise, the TRP does not report the second differential correction numbers.

[0565] Step 4, the LMF notifies the first differential correction number to the target UE.

[0566] The first message of the first differential correction number notified by the LMF to the target UE can be carried by UE-based positioning assistance data, or carried by a message for sending UE-based positioning assistance data, or carried by a positioning request message, or a newly defined message, etc. For example: this first message can be in a broadcast manner, or in a unicast or multicast manner, etc. This first message can be periodic or aperiodic.

[0567] In some embodiments, in the positioning assistance data notified by the LMF to the target UE, the resolution of the RTD is improved. 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.

[0568] It should be noted that at least one PRU estimates the difference in TOA between different TRPs, compares it with the theoretical TOA difference, calculates the timing deviation (i.e., RTD) between different TRPs, and then the PRU reports the RTD to the LMF. If there are multiple PRUs reporting, the LMF performs an averaging process based on the RTD values reported by multiple PRUs to obtain the RTD and notifies the target UE. The corresponding code is as follows:

[0569]

[0570]

[0571] Or in some embodiments, in the positioning assistance data notified by the LMF to the target UE, the initial phase deviation RPD between different TRPs is newly added. In some embodiments, the time-varying property of the RPD can also be included, for example: the time change rate of the RPD.

[0572] Among them, the PRU simultaneously tracks the difference between the carrier phase measurement quantities (RSCP) of two TRPs, and compares it with the theoretical RSCP phase difference to obtain the RPD.

[0573] The above positioning assistance data does not require reference to the absolute initial phase information of the TRP, but only needs to refer to the initial phase difference information between the TRP and the adjacent TRP (i.e., the difference value of the initial phases between different TRPs). For example: RPD = InitialPhase(TRP_n) - InitialPhase(TRP_ref). Among them, InitialPhase(TRP_ref) represents the initial phase value of the reference TRP, and InitialPhase(TRP_n) represents the initial phase value of the adjacent TRP.

[0574]

[0575]

[0576] Or in some embodiments, the broadcast notification period T of the RTD takes values including 80 ms, 160 ms, 320 ms, 640 ms, 1280 ms, 2560 ms, and 5120 ms. Within the time range of the notification period T, it is necessary to further consider the time-varying nature of the timing deviation caused by the UE crystal oscillator and the base station crystal oscillator, and consider the following three methods:

[0577] Method 1: In the positioning assistance data notified by the LMF to the target UE, add the time change rates of the timing deviation RTD and RPD. For example: RTD_Rate, RPD_rate.

[0578] Method 2: Based on the allowed positioning error range (for example: the error is within 10% cycle, and the crystal oscillator frequency offset of the TRP), the UE or the LMF requests the serving base station to adjust the broadcast period T of the RTD / RPD. For example: The UE / LMF adjusts the notification period T of the RTD / RPD on-demand to the serving base station, or triggers the serving base station based on an event.

[0579] Method 3: The LMF gives the allowed positioning error range and allows the PRU / target UE to adjust the period T by itself.

[0580] For the target UE side:

[0581] Step 1: The target UE sends a "UE-based NR CPP" positioning request message (i.e., the second message) to the LMF. Among them, this positioning request message includes the type of differential correction number expected to be provided by the LMF.

[0582] Step 2: The target UE receives the first message of the first differential correction number notified by the LMF, and uses the first differential correction number to eliminate the initial phase deviation RPD between different TRPs and the initial timing deviation RTD between different TRPs included in the RSCPD measurement quantity. The target UE performs UE-based NR CPP positioning solution based on the differential positioning measurement quantity RSCPD after eliminating the deviation.

[0583] For the base station / TRP side:

[0584] Step 1: The TRP receives the "first differential correction number request" message (i.e., the fourth message) from the LMF and calculates the second differential correction number. Among them, the request message contains the relevant information of the reference TRP. Multiple TRPs can calculate the second differential correction number based on the pre-saved known information or the information obtained by measuring the PRS signals sent to each other.

[0585] Step 2: The TRP reports the second differential correction number to the LMF in a direct manner. Among them, "the reporting method of the second differential correction number includes periodic reporting and / or aperiodic reporting. For periodic reporting, it is necessary to define and configure the reporting period of the second differential correction number. For aperiodic reporting, the reporting threshold of the second differential correction number and / or the measurement quality indication can be defined and configured, that is: when the second differential correction number and / or the measurement quality indication exceed a certain threshold, the TRP reports the "first differential correction number", otherwise, the TRP does not report the second differential correction number.

[0586] Step 3: The TRP sends a downlink PRS signal to the PRU and the target UE.

[0587] Embodiment 2:

[0588] For the LMF side:

[0589] Step 1: The LMF receives the "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target terminal (UE). Among them, the positioning request message contains the "NR CPP differential correction number" (i.e., the type of differential correction number) that the target UE expects the LMF to provide.

[0590] Here, "expectation" can be understood as the type of differential correction number that the terminal needs or wants the first core network device to provide, or it can also be referred to as the type of differential correction number that the terminal requests the first core network device to provide. For example, the type of differential correction number 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 example, if the terminal notifies the first core network device through a second message that the types of differential correction numbers it expects, needs, or requests the first core network device to provide are HRTD and the time change rate of HRTD, then the first core network device can carry the value of HRTD and the value of the time change rate of HRTD in the first message sent to the terminal. Of course, the embodiments of the present application are not limited thereto.

[0591] Step 2: The LMF sends a "NR CPP differential correction number" request message (i.e., the fourth message) to one or more TRPs, and / or sends a "NR CPP differential correction number" request message (i.e., the sixth message) to one or more PRUs (or reference UEs), where the request message contains the relevant information of the reference TRP. The request message can be sent before, after, or at the same time as the downlink positioning assistance data message sent to the PRU.

[0592] Step 3: The LMF obtains the first differential correction number through Method 2 or Method 3 as follows.

[0593] Wherein, the first differential correction number includes at least one of the following:

[0594] The HRTD of the non-reference TRP and the reference TRP;

[0595] The RPD of the non-reference TRP and the reference TRP;

[0596] The time change rate of HRTD;

[0597] The time change rate of RPD.

[0598] Method 2: The direct method of the PRU: The LMF determines the second differential correction number reported by a PRU as the first differential correction number. Or the LMF receives the second differential correction numbers reported by multiple PRUs and further processes them to obtain the first differential correction number.

[0599] Method 3: Indirect reporting of the PRU: The LMF receives the RSTD and RSCPD measurement quantities and measurement quality indicators reported by one or more PRUs.

[0600] Step 4: The LMF notifies the target UE of the first differential correction number.

[0601] The first message of the first differential correction number notified by the LMF to the target UE can be carried by UE-based positioning assistance data, or by the message for sending UE-based positioning assistance data, or by a positioning request message, or a newly defined message, etc. For example, the first message can be sent in a broadcast manner, or in a unicast or multicast manner, etc. The first message can be periodic or aperiodic.

[0602] For the PRU side:

[0603] Step 1: The PRU (or the reference UE) receives the "first differential correction number request" message (i.e., the sixth message) from the LMF, where the request message contains the relevant information of the reference TRP, and this message can be sent before, after, or at the same time as the downlink positioning assistance data message.

[0604] Step 2: Multiple PRUs measure the downlink PRS signals from different TRPs within the same time window notified by the LMF, obtain the RSTD and RSCPD measurement quantities and measurement quality indicators, further calculate to obtain HRTD and RPD, and obtain the time change rates of HRTD and RPD through the RTD and RPD at different times.

[0605] In some embodiments, the PRU determines whether the quality of the current RSTD and RSCPD measurement quantities meets the accuracy requirements of the "NR CPP differential correction number" through the measurement quality indicator.

[0606] If it is satisfied, the PRU performs a differential operation on the RSTD and RSCPD measurement quantities and the ideal values of RSTD and RSCPD to obtain HRTD and RPD, and obtains the time change rates of HRTD and RPD through the RTD and RPD at different times. Proceed to Step 3.

[0607] If it is not satisfied, the PRU discards the current RSTD and RSCPD measurement quantities.

[0608] Step 3: The PRU reports the second differential correction number to the LMF in a direct or indirect manner respectively, or reports the reference signal measurement quantities and measurement quality indicators for calculating the first differential correction number.

[0609] Direct manner: One or more PRUs report the second differential correction number to the LMF.

[0610] Indirect manner: One or more PRUs report the RSTD and RSCPD measurement quantities, as well as the measurement quality indicator, to the LMF.

[0611] For the target UE side:

[0612] Step 1. The "UE-based NR CPP" positioning request information (i.e., the second message) sent by the target UE to the LMF. The positioning request message includes the type of differential correction number expected to be provided by the LMF.

[0613] Step 2. The target UE receives the first message notifying the first differential correction number from the LMF, and uses the first differential correction number to eliminate the initial phase deviation RPD between different TRPs and the initial timing deviation RTD between different TRPs included in the RSCPD measurement quantity. The target UE performs UE-based NR CPP positioning calculation based on the differential positioning measurement quantity RSCPD after eliminating the deviation.

[0614] For the base station / TRP side:

[0615] The TRP sends the downlink PRS signal to the PRU and the target UE.

[0616] In the embodiment of the present application, the LMF notifies the target UE of the first differential correction number through the first message, which is used by the target UE 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, and can also solve the problems of large PRU load and large radio interface signaling overhead existing in the conventional double-differential scheme.

[0617] The above embodiments introduce the information processing method of the present application. Next, this embodiment will further describe the corresponding terminal, core network device, transceiver point, and positioning reference unit with reference to the drawings.

[0618] As Figure 6 shown, this embodiment provides a terminal, including a memory 61, a transceiver 62, and a processor 63. The memory 61 is used to store computer programs. The transceiver 62 is used to receive and send 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:

[0619] Receive the first message sent by the first core network device. The first message carries the first differential correction number.

[0620] The terminal performs positioning calculation according to the first differential correction number.

[0621] Wherein, the first differential correction number includes at least one of the following:

[0622] The high-resolution relative time deviation HRTD between the non-reference transceiver point TRP and the reference TRP.

[0623] Relative Phase Deviation (RPD) between the non-reference TRP and the reference TRP;

[0624] Time change rate of HRTD;

[0625] Time change rate of RPD.

[0626] In some embodiments, the first message further carries at least one of the following information:

[0627] TRP transmission timing error group identifier;

[0628] TRP transmission antenna identifier;

[0629] Antenna reference point identifier;

[0630] Time information corresponding to HRTD;

[0631] Time information corresponding to RPD.

[0632] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the Fast Fourier Transform (FFT).

[0633] In some embodiments, the processor 63 is configured to read the computer program in the memory 61 and perform the following operations:

[0634] Send a second message to the first core network device; where the second message carries the type of differential correction number that the terminal expects the first core network device to provide.

[0635] In some embodiments, the first message further carries positioning assistance data;

[0636] Or,

[0637] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0638] Or,

[0639] The first message is used to request terminal capabilities.

[0640] In some embodiments, the processor 63 is configured to read the computer program in the memory 61 and perform the following operations:

[0641] According to the first differential correction number, eliminate the phase deviation and / or timing deviation in the reference signal carrier phase difference (RSCPD) measurement quantity to obtain the first RSCPD.

[0642] Perform positioning calculation according to the first RSCPD.

[0643] Among them, in Figure 6 The bus architecture may include any number of interconnected buses and bridges, specifically various circuits represented by one or more processors represented by the processor 63 and the memory represented by the memory 61 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, so they will not be further described herein. The bus interface provides an interface. The transceiver 62 may be a plurality of components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission media include wireless channels, wired channels, optical fiber cables, and other transmission media. For different user devices, the user interface 64 may also be an interface capable of externally connecting and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0644] The processor 63 is responsible for managing the bus architecture and general processing, and the memory 61 may store data used by the processor 63 when performing operations.

[0645] Optionally, the processor 63 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0646] The processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and the memory may also be physically separated.

[0647] It should be noted here that the above terminal provided in the embodiments of the present application can implement all the method steps implemented by the information processing method embodiments on the terminal side, and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0648] As Figure 7 shown, the embodiments of the present application provide a terminal 700, including:

[0649] A receiving unit 710, configured to receive a first message sent by a first core network device; wherein, the first message carries a first differential correction number;

[0650] A processing unit 720, configured to perform positioning calculation according to the first differential correction number;

[0651] Wherein, the first differential correction number includes at least one of the following:

[0652] The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP;

[0653] The relative phase deviation (RPD) between a non-reference TRP and a reference TRP;

[0654] The time change rate of the HRTD;

[0655] The time change rate of the RPD.

[0656] In some embodiments, the first message further carries at least one of the following information:

[0657] The TRP transmission timing error group identifier;

[0658] The TRP transmission antenna identifier;

[0659] The antenna reference point identifier;

[0660] The time information corresponding to the HRTD;

[0661] The time information corresponding to the RPD.

[0662] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform (FFT).

[0663] In some embodiments, the terminal 700 further includes:

[0664] A sending unit, configured to 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.

[0665] In some embodiments, the first message further carries positioning assistance data;

[0666] Or,

[0667] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0668] Or,

[0669] The first message is used to request terminal capabilities.

[0670] In some embodiments, the processing unit 720 is further configured to:

[0671] According to the first differential correction number, eliminate the phase deviation and / or timing deviation in the reference signal carrier phase difference (RSCPD) measurement to obtain a first RSCPD;

[0672] Perform positioning calculation according to the first RSCPD.

[0673] It should be noted that the above terminal provided in the embodiments of the present application can implement all the method steps implemented by the information processing method embodiment on the terminal side, and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiment will not be specifically described in this embodiment.

[0674] As Figure 8 shown, the embodiments of the present application provide 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 receive and send data under the control of the processor 83; such as 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:

[0675] 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:

[0676] The high-resolution relative time deviation (HRTD) between the non-reference transceiver point (TRP) and the reference TRP;

[0677] The relative phase deviation (RPD) between the non-reference TRP and the reference TRP;

[0678] The time change rate of HRTD;

[0679] The time change rate of RPD.

[0680] In some embodiments, the first message further carries at least one of the following information:

[0681] The TRP transmission timing error group identifier;

[0682] The TRP transmission antenna identifier;

[0683] The antenna reference point identifier;

[0684] Time information corresponding to HRTD;

[0685] Time information corresponding to RPD.

[0686] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform FFT.

[0687] In some embodiments, the processor 83 is configured to read a computer program in the memory 81 and perform the following operations:

[0688] Receive a second message sent by a terminal; wherein the second message carries the type of differential correction number that the terminal expects to provide.

[0689] In some embodiments, the processor 83 is configured to read a computer program in the memory 81 and perform the following operations:

[0690] Determine the first differential correction number.

[0691] In some embodiments, the processor 83 is configured to read a computer program in the memory 81 and perform the following operations:

[0692] Receive a third message sent by one or more TRPs; wherein the third message carries a second differential correction number;

[0693] Determine the first differential correction number according to the second differential correction number;

[0694] Wherein, the second differential correction number includes at least one of the following:

[0695] The HRTD of the TRP and the reference TRP;

[0696] The RPD of the TRP and the reference TRP;

[0697] The time change rate of the HRTD;

[0698] The time change rate of the RPD.

[0699] In some embodiments, the processor 83 is configured to read a computer program in the memory 81 and perform the following operations:

[0700] Send a fourth message to one or more TRPs; wherein, the fourth message is used to request to obtain a first differential correction number, and the fourth message carries relevant information of the reference TRP.

[0701] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0702] Receive a fifth message sent by one or more positioning reference units PRUs; wherein, the fifth message carries a second differential correction number;

[0703] Determine the first differential correction number according to the second differential correction number;

[0704] Wherein, the second differential correction number includes at least one of the following:

[0705] HRTD between a non-reference TRP and a reference TRP;

[0706] RPD between a non-reference TRP and a reference TRP;

[0707] Time change rate of HRTD;

[0708] Time change rate of RPD.

[0709] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0710] If the second differential correction number is sent by one TRP or one PRU, determine the second differential correction number as the first differential correction number;

[0711] And / or,

[0712] If the second differential correction number is sent by multiple TRPs or multiple PRUs, perform averaging or merging processing on the second differential correction number to obtain the first differential correction number.

[0713] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0714] 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;

[0715] When the measurement quality indication meets the differential correction accuracy requirement, determine the first differential correction number according to the reference signal measurement quantity.

[0716] In some embodiments, the reference signal measurement quantity includes: relative signal arrival time difference (RSTD) measurement quantity, and / or, reference signal carrier phase difference (RSCPD) measurement quantity;

[0717] and / or,

[0718] The measurement quality indication includes: measurement quality indication of RSTD, and / or, measurement quality indication of RSCPD.

[0719] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0720] Process the reference signal measurement quantity to obtain a second differential correction number;

[0721] If the reference signal measurement quantity is sent by one PRU, determine the second differential correction number as the first differential correction number; and / or, if the reference signal measurement quantity is sent by multiple PRUs, average or combine the second differential correction numbers corresponding to the multiple PRUs to obtain the first differential correction number.

[0722] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform at least one of the following operations:

[0723] Perform a difference operation on the RSTD measurement quantity and the ideal value of RSTD to obtain HRTD;

[0724] Perform a difference operation on the RSCPD measurement quantity and the ideal value of RSCPD to obtain RPD;

[0725] Determine the time change rate of HRTD according to HRTD at different times;

[0726] Determine the time change rate of RPD according to RPD at different times.

[0727] In some embodiments, the processor 83 is configured to read the computer program in the memory 81 and perform the following operations:

[0728] Send a sixth message to one or more PRUs; wherein, the sixth message is used to request to obtain the first differential correction number, and the sixth message carries the relevant information of the reference TRP.

[0729] In some embodiments, the first message further carries positioning assistance data;

[0730] Or,

[0731] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0732] Alternatively,

[0733] The first message is used to request terminal capabilities.

[0734] Wherein, in Figure 8 The bus architecture may include any number of interconnected buses and bridges, specifically, various circuits represented by one or more processors represented by processor 83 and a memory represented by memory 81 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, so further description thereof will not be provided herein. The bus interface provides an interface. The transceiver 82 may be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission mediums include wireless channels, wired channels, optical fiber cables, and other transmission mediums. The processor 83 is responsible for managing the bus architecture and general processing, and the memory 81 may store data used by the processor 83 when performing operations.

[0735] The processor 83 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may also adopt a multi-core architecture.

[0736] It should be noted here that the above core network device provided by the embodiments of the present application can implement all the method steps implemented by the information processing method embodiment on the first core network device side, and can achieve the same technical effects, and the same parts and beneficial effects as those in the method embodiment will not be specifically described in this embodiment.

[0737] As Figure 9 shown, the embodiments of the present application provide a core network device 900, including:

[0738] A first sending unit 910, 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:

[0739] The high-resolution relative time deviation (HRTD) between a non-reference transceiver point (TRP) and a reference TRP;

[0740] The relative phase deviation (RPD) between a non-reference TRP and a reference TRP;

[0741] The time change rate of the HRTD;

[0742] Time change rate of RPD

[0743] In some embodiments, the first message further carries at least one of the following information:

[0744] TRP transmission timing error group identifier;

[0745] TRP transmission antenna identifier;

[0746] Antenna reference point identifier;

[0747] Time information corresponding to HRTD;

[0748] Time information corresponding to RPD.

[0749] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform FFT.

[0750] In some embodiments, the core network device 900 further includes:

[0751] A first receiving unit, configured to receive a second message sent by a terminal; where the second message carries the differential correction number type that the terminal expects to provide.

[0752] In some embodiments, the core network device 900 further includes:

[0753] A determining unit, configured to determine the first differential correction number.

[0754] In some embodiments, the determining unit is further configured to:

[0755] Receive a third message sent by one or more TRPs; where the third message carries a second differential correction number;

[0756] Determine the first differential correction number according to the second differential correction number;

[0757] Where the second differential correction number includes at least one of the following:

[0758] The HRTD between the TRP and the reference TRP;

[0759] The RPD between the TRP and the reference TRP;

[0760] Time change rate of HRTD;

[0761] Time change rate of RPD.

[0762] In some embodiments, the core network device 900 further includes:

[0763] A second sending unit, configured to send a fourth message to one or more TRPs; wherein, the fourth message is used to request to obtain a first differential correction number, and the fourth message carries information related to the reference TRP.

[0764] In some embodiments, the determining unit is further configured to:

[0765] Receive a fifth message sent by one or more positioning reference units PRUs; wherein, the fifth message carries a second differential correction number;

[0766] Determine the first differential correction number according to the second differential correction number;

[0767] Wherein, the second differential correction number includes at least one of the following:

[0768] HRTD between a non-reference TRP and a reference TRP;

[0769] RPD between a non-reference TRP and a reference TRP;

[0770] Time change rate of HRTD;

[0771] Time change rate of RPD.

[0772] In some embodiments, the determining unit is further configured to:

[0773] If the second differential correction number is sent by one TRP or one PRU, determine the second differential correction number as the first differential correction number;

[0774] And / or,

[0775] If the second differential correction number is sent by multiple TRPs or multiple PRUs, perform averaging or merging processing on the second differential correction number to obtain the first differential correction number.

[0776] In some embodiments, the determining unit is further configured to:

[0777] 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;

[0778] When the measurement quality indication meets the differential correction accuracy requirement, determine the first differential correction number according to the reference signal measurement quantity.

[0779] In some embodiments, the reference signal measurement quantity includes: relative signal arrival time difference (RSTD) measurement quantity, and / or, reference signal carrier phase difference (RSCPD) measurement quantity;

[0780] and / or,

[0781] The measurement quality indication includes: measurement quality indication of RSTD, and / or, measurement quality indication of RSCPD.

[0782] In some embodiments, the determining unit is further configured to:

[0783] Process the reference signal measurement quantity to obtain a second differential correction number;

[0784] If the reference signal measurement quantity is sent by one PRU, determine the second differential correction number as the first differential correction number; and / or, if the reference signal measurement quantity is sent by multiple PRUs, average or combine the second differential correction numbers corresponding to the multiple PRUs to obtain the first differential correction number.

[0785] In some embodiments, the determining unit is further configured to perform at least one of the following:

[0786] Perform a difference operation on the RSTD measurement quantity and the ideal value of RSTD to obtain HRTD;

[0787] Perform a difference operation on the RSCPD measurement quantity and the ideal value of RSCPD to obtain RPD;

[0788] Determine the time change rate of HRTD according to HRTD at different times;

[0789] Determine the time change rate of RPD according to RPD at different times.

[0790] In some embodiments, the core network device 900 further includes:

[0791] A third sending unit, configured to send a sixth message to one or more PRUs; wherein, the sixth message is used to request to obtain the first differential correction number, and the sixth message carries the relevant information of the reference TRP.

[0792] In some embodiments, the first message further carries positioning assistance data;

[0793] Or,

[0794] The first message carries positioning assistance data, and the positioning assistance data includes the first differential correction number;

[0795] Or,

[0796] The first message is used to request terminal capabilities.

[0797] It should be noted that the above core network device provided by the embodiments of the present application can implement all the method steps implemented by the information processing method embodiment on the first core network device side, and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiment will not be specifically described herein.

[0798] As Figure 10 shown, the embodiments of the present application provide a transceiver point, which includes a memory 101, a transceiver 102, and a processor 103. Among them, the memory 101 is used to store computer programs; the transceiver 102 is used to transmit and receive data under the control of the processor 103; for example, the transceiver 102 is used to receive and transmit 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:

[0799] Send a third message to the first core network device; wherein, the third message carries a second differential correction number.

[0800] Wherein, the second differential correction number includes at least one of the following:

[0801] The high-resolution relative time deviation (HRTD) between the TRP and the reference TRP;

[0802] The relative phase deviation (RPD) between the TRP and the reference TRP;

[0803] The time change rate of the HRTD;

[0804] The time change rate of the RPD.

[0805] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform (FFT).

[0806] In some embodiments, the processor 103 is used to read the computer program in the memory 101 and perform the following operations:

[0807] Receive a fourth message sent by the first core network device; wherein, the fourth message is used to request to obtain a first differential correction number, and the fourth message carries the relevant information of the reference TRP.

[0808] In some embodiments, the processor 103 is used to read the computer program in the memory 101 and perform the following operations:

[0809] Send the third message to the first core network device in a periodic manner;

[0810] Or,

[0811] Send the third message to the first core network device when a first condition is satisfied;

[0812] Wherein, the first condition includes at least one of the following:

[0813] HRTD is greater than a first threshold;

[0814] RPD is greater than a second threshold;

[0815] The measurement quality indication of the relative signal arrival time difference RSTD is greater than a third threshold;

[0816] The measurement quality indication of the reference signal carrier phase difference RSCPD is greater than a fourth threshold.

[0817] Wherein, in Figure 10 The bus architecture may include any number of interconnected buses and bridges, specifically, various circuits represented by one or more processors represented by processor 103 and a memory represented by memory 101 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and thus will not be further described herein. The bus interface provides an interface. The transceiver 102 may be multiple elements, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission media include wireless channels, wired channels, optical fiber cables, etc. Processor 103 is responsible for managing the bus architecture and general processing, and memory 101 may store data used by processor 103 when performing operations.

[0818] Optionally, processor 103 may be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field - Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi - core architecture.

[0819] The processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling a computer program stored in the memory. The processor and the memory may also be physically separated.

[0820] It should be noted here that the above transceiver point provided by the embodiments of the present application can implement all the method steps implemented by the information processing method embodiments on the side of the above transceiver point, and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0821] As Figure 11 shown, the embodiments of the present application provide a transceiver point 1100, including:

[0822] A sending unit 1110, configured to send a third message to a first core network device; wherein, the third message carries a second differential correction number;

[0823] Wherein, the second differential correction number includes at least one of the following:

[0824] The high-resolution relative time deviation (HRTD) between the transceiver point (TRP) and a reference TRP;

[0825] The relative phase deviation (RPD) between the TRP and the reference TRP;

[0826] The time change rate of the HRTD;

[0827] The time change rate of the RPD.

[0828] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform (FFT).

[0829] In some embodiments, the transceiver point 1100 further includes:

[0830] A receiving unit, configured to receive a fourth message sent by the first core network device; wherein, the fourth message is used to request to obtain a first differential correction number, and the fourth message carries information related to the reference TRP.

[0831] In some embodiments, the sending unit 1110 is further configured to:

[0832] Send the third message to the first core network device in a periodic manner;

[0833] Or,

[0834] Send the third message to the first core network device when a first condition is satisfied;

[0835] Wherein, the first condition includes at least one of the following:

[0836] The HRTD is greater than the first threshold;

[0837] The RPD is greater than the second threshold;

[0838] The measurement quality indication of the relative signal arrival time difference RSTD is greater than the third threshold;

[0839] The measurement quality indication of the reference signal carrier phase difference RSCPD is greater than the fourth threshold.

[0840] It should be noted that the above transceiver points provided in the embodiments of the present application can implement all the method steps implemented by the information processing method embodiments on the transceiver point side, and can achieve the same technical effects. Therefore, the same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0841] As Figure 12 shown, the embodiments of the present application provide a positioning reference unit, which includes a memory 121, a transceiver 122, and a processor 123; wherein, the memory 121 is used to store computer programs; the transceiver 122 is used to receive and send data under the control of the processor 123; for example, the transceiver 122 is used to receive and send data under the control of the processor 123; the processor 123 is used to read the computer program in the memory 121 and perform the following operations:

[0842] 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;

[0843] Wherein, the second differential correction number includes at least one of the following:

[0844] The high-resolution relative time deviation HRTD between the non-reference transceiver point TRP and the reference TRP;

[0845] The relative phase deviation RPD between the non-reference TRP and the reference TRP;

[0846] The time change rate of the HRTD;

[0847] The time change rate of the RPD.

[0848] In some embodiments, the reference signal measurement quantity includes: the relative signal arrival time difference RSTD measurement quantity, and / or, the reference signal carrier phase difference RSCPD measurement quantity;

[0849] And / or,

[0850] The measurement quality indication includes: the measurement quality indication of the RSTD, and / or, the measurement quality indication of the RSCPD.

[0851] In some embodiments, the granularity of the HRTD is less than Tc; where, T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of the fast Fourier transform (FFT).

[0852] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform the following operations:

[0853] Receive a sixth message sent by the first core network device; wherein, the sixth message is used to request to obtain a first differential correction number, and the sixth message carries information related to the reference TRP.

[0854] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform the following operations:

[0855] Measure the positioning reference signal (PRS) sent by the TRP to obtain the reference signal measurement and the measurement quality indication;

[0856] Send a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement and the measurement quality indication.

[0857] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform the following operations:

[0858] Measure the positioning reference signal (PRS) sent by the TRP to obtain the reference signal measurement and the measurement quality indication;

[0859] When the measurement quality indication meets the differential correction accuracy requirement, process the reference signal measurement to obtain the second differential correction number;

[0860] Send a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number.

[0861] In some embodiments, the processor 123 is configured to read the computer program in the memory 121 and perform at least one of the following operations:

[0862] Perform a difference operation on the RSTD measurement and the RSTD ideal value to obtain the HRTD;

[0863] Perform a difference operation on the RSCPD measurement and the RSCPD ideal value to obtain the RPD;

[0864] Determine the time change rate of the HRTD according to the HRTD at different times;

[0865] Determine the time change rate of the RPD according to the RPD at different times.

[0866] Among them, in Figure 12 The bus architecture may include any number of interconnected buses and bridges, specifically, various circuits represented by one or more processors represented by processor 123 and a memory represented by memory 121 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and thus will not be further described herein. The bus interface provides an interface. The transceiver 122 may be a plurality of components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission mediums include wireless channels, wired channels, optical fiber cables, and other transmission mediums.

[0867] The processor 123 is responsible for managing the bus architecture and general processing, and the memory 121 may store data used by the processor 123 when performing operations.

[0868] Optionally, the processor 123 may be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0869] The processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and the memory may also be physically separated.

[0870] It should be noted here that the above-mentioned positioning reference unit provided in the embodiments of the present application can implement all the method steps implemented by the information processing method embodiments on the positioning reference unit side, and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiments will not be specifically described in this embodiment.

[0871] As Figure 13 shown, the embodiments of the present application provide a positioning reference unit 1300, including:

[0872] A sending unit 1310, configured to send a fifth message to a first core network device; wherein, the fifth message carries a second differential correction number, or the fifth message carries a reference signal measurement quantity and a measurement quality indication;

[0873] Wherein, the second differential correction number includes at least one of the following:

[0874] A high-resolution relative time deviation (HRTD) between a non-reference transmission and reception point (TRP) and a reference TRP;

[0875] A relative phase deviation (RPD) between a non-reference TRP and a reference TRP;

[0876] A time change rate of the HRTD;

[0877] A time change rate of the RPD.

[0878] In some embodiments, the reference signal measurement quantity includes: a relative signal arrival time difference (RSTD) measurement quantity, and / or, a reference signal carrier phase difference (RSCPD) measurement quantity;

[0879] And / or,

[0880] The measurement quality indication includes: a measurement quality indication of the RSTD, and / or, a measurement quality indication of the RSCPD.

[0881] In some embodiments, the granularity of the HRTD is less than Tc; where T c = 1 / (Δf max ·N f ), Δf max is the maximum subcarrier spacing, and N f is the number of points of a fast Fourier transform (FFT).

[0882] In some embodiments, the positioning reference unit 1300 further includes:

[0883] A receiving unit, configured to receive a sixth message sent by the first core network device; wherein, the sixth message is used to request to obtain a first differential correction number, and the sixth message carries relevant information of the reference TRP.

[0884] In some embodiments, the sending unit 1310 is further configured to:

[0885] Measure a positioning reference signal (PRS) sent by a TRP to obtain the reference signal measurement quantity and the measurement quality indication;

[0886] Send a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement quantity and the measurement quality indication.

[0887] In some embodiments, the sending unit 1310 is further configured to:

[0888] Measure the positioning reference signal PRS sent by the TRP to obtain the reference signal measurement quantity and the measurement quality indication;

[0889] When the measurement quality indication meets the differential correction accuracy requirement, process the reference signal measurement quantity to obtain the second differential correction number;

[0890] Send a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number.

[0891] In some embodiments, the sending unit 1310 is further configured to perform at least one of the following:

[0892] Perform a difference operation on the RSTD measurement quantity and the RSTD ideal value to obtain HRTD;

[0893] Perform a difference operation on the RSCPD measurement quantity and the RSCPD ideal value to obtain RPD;

[0894] Determine the time change rate of HRTD according to the HRTD at different times;

[0895] Determine the time change rate of RPD according to the RPD at different times.

[0896] It should be noted here that the above positioning reference unit provided by the embodiments of the present application can implement all the method steps implemented by the information processing method embodiment on the positioning reference unit side, and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiment will not be specifically described in this embodiment.

[0897] It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, in each embodiment of the present application, each functional unit can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0898] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this 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 for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0899] The embodiments of this application also provide a processor-readable storage medium. The processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the steps of the above information processing method and can achieve the same technical effects. Here, the same parts and beneficial effects as those in the method embodiments in this embodiment will not be specifically elaborated.

[0900] 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 memories (such as floppy disks, hard disks, magnetic tapes, magneto-optical discs (MO), etc.), optical memories (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memories (NANDFLASH), solid-state drives (SSD)).

[0901] Those skilled in the art should understand that the embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories and optical memories, etc.) that contain computer-usable program codes.

[0902] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0903] These processor-executable instructions can also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the processor-readable memory generate a manufactured article including an instruction device that implements the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0904] These processor-executable instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operating steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0905] In addition, it should be noted that in the apparatuses and methods of the present application, obviously, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present application. And, the steps of performing the above series of processes can naturally be executed in chronological order according to the described order, but it is not necessary to execute them in chronological order. Certain steps can be executed in parallel or independently of each other. For those of ordinary skill in the art, it is understandable that all or any steps or components of the method and apparatus of the present application can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software, or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present application.

[0906] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

25. The information processing method according to claim 22, wherein The transceiver point TRP sending the third message to the first core network device includes: The TRP sends the third message to the first core network device in a periodic manner; Or, When the first condition is met, the TRP sends the third message to the first core network device; Wherein, the first condition includes at least one of the following: HRTD is greater than 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, characterized in that, It includes: The positioning reference unit PRU sends a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number, or the fifth message carries the reference signal measurement value and the measurement quality indication; Wherein, the second differential correction number includes at least one of the following: The high-resolution relative time deviation HRTD between the non-reference transceiver point TRP and the reference TRP; The relative phase deviation RPD between the non-reference TRP and the reference TRP; The time change rate of HRTD; The time change rate of RPD.

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

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

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

30. The information processing method according to claim 26 or 27, characterized in that 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, and obtains the reference signal measurement quantity and the measurement quality indication; The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the reference signal measurement quantity and the measurement quality indication.

31. The information processing method according to claim 26 or 27, characterized in that 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, and obtains the reference signal measurement quantity and the measurement quality indication; When the measurement quality indication meets the differential correction accuracy requirement, the PRU processes the reference signal measurement quantity to obtain the second differential correction number; The PRU sends a fifth message to the first core network device; wherein, the fifth message carries the second differential correction number.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

52. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the steps of the information processing method according to any one of claims 1 to 32.

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