A method, system, device, and medium for RRM enhancement of NTN

Abstract

The application belongs to the technical field of communication, and discloses an RRM enhancement method, system, device and medium of NTN. The enhancement method comprises the following steps: receiving, by a terminal, a neighboring NTN configuration containing SSB transmission, SMTC, beam hopping and ephemeris issued by a ground base station, determining a target beam position in combination with the terminal position and the neighboring ephemeris, calculating the time difference between the target beam position SSB service window and the original SMTC window according to the beam hopping configuration, updating the SMTC parameter by using the difference, generating a measurement window matching the beam hopping timing in combination with the SSB transmission data, and completing the RRM measurement of the SSB by the terminal in the window and reporting the base station. The scheme can avoid the problems of measurement missing and satellite-ground switching failure caused by the mismatch between the measurement window and the beam service time in the beam hopping scene, does not need to greatly prolong the measurement window, effectively controls the terminal power consumption, and improves the stability of satellite-ground switching and the user service continuity.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a method, system, device and medium for enhancing RRM of NTN. Background Technology

[0002] In terrestrial 5G networks, RRM (Radio Resource Management) measurement is a key mechanism to ensure that terminals maintain a stable connection with the serving base station during movement. It supports mobility decisions such as handover and cell reselection by accurately measuring signal quality.

[0003] Current technologies do not take into account the situation during satellite-to-ground handover in 5G NTN networks. When the SSB uses satellite beam hopping technology, based on the existing SMTC configuration method, within the UE's measurement window, the SSB signal may not be detected because the UE's position is not within the satellite's beam hopping service time. This can lead to RRM measurement failure, resulting in cell handover failure and affecting the user's service continuity experience. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a method, system, device, and medium for enhancing RRM in NTN. This solution eliminates the need for significantly extended measurement windows, effectively controls terminal power consumption, and improves satellite-to-ground handover stability and user service continuity.

[0005] The first aspect of this disclosure proposes an RRM enhancement method for NTN, the enhancement method comprising: The terminal receives the NTN configuration information of the neighboring cell from the ground serving base station of the serving cell; the NTN configuration information includes: SSB transmission time data, SMTC configuration parameters, satellite beam hopping configuration information, and NTN ephemeris information; The terminal determines its target wavelength position based on its own location information and the NTN ephemeris information of the neighboring cells. The terminal determines the hopping beam service time window of the target position based on the satellite hopping beam configuration information, and calculates the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window of the target position based on the hopping beam service time window. The terminal updates the SMTC configuration parameters using the time difference, and determines the SSB measurement time window based on the updated SMTC configuration parameters and the SSB transmission time data. The terminal performs RRM measurement of the SSB signal based on the SSB measurement time window and uploads the RRM measurement to the ground service base station.

[0006] According to a preferred embodiment of this disclosure, the enhancement method further includes: The ground service base station receives the location information uploaded by the terminal and determines the target wavelength of the terminal based on the NTN ephemeris information and the location information. The ground service base station determines the actual SMTC configuration parameters of the hopping beam service time window of the target beam position where the terminal is located based on the target beam position and the satellite hopping beam configuration information, and sends the actual SMTC configuration parameters to the terminal. The terminal performs RRM measurement of the SSB signal according to the actual configuration parameters of the SMTC, and uploads the RRM measurement to the ground service base station.

[0007] According to a preferred embodiment of this disclosure, the enhancement method further includes: The ground service base station predicts the predicted location information of the terminal based on the terminal's motion trajectory, and determines the predicted position of the terminal based on the NTN ephemeris information and the predicted location information. The ground service base station determines the SMTC prediction configuration parameters for the hopping beam service time window of the target beam position where the terminal is located based on the predicted beam position and the satellite hopping beam configuration information, and sends the SMTC prediction configuration parameters to the terminal.

[0008] According to a preferred embodiment of this disclosure, the enhancement method further includes: The terminal determines the SSB predicted transmission time based on the NTN ephemeris information and the predicted location information; The SMTC prediction configuration parameters are dynamically adjusted based on the SSB prediction transmission time to determine the SSB prediction measurement time window, and the RRM measurement of the SSB signal is performed through the SSB prediction measurement time window.

[0009] According to a preferred embodiment of this disclosure, the enhancement method further includes: The ground serving base station of the serving cell obtains the NTN ephemeris information of the neighboring cell according to the data acquisition configuration; Alternatively, the ground serving base station of the serving cell obtains the NTN ephemeris information of the neighboring cell based on the broadcast data of the ground serving base station of the neighboring cell; Alternatively, the ground serving base station of the serving cell may use the historical NTN ephemeris information of neighboring cells previously stored by the terminal as the NTN ephemeris information; Alternatively, the ground serving base station of the serving cell may interact with the ground serving base station of the neighboring cell through a communication interface to obtain the NTN ephemeris information; Alternatively, the ground serving base station of the serving cell accesses the 5G core network to obtain the NTN ephemeris information of the neighboring cell; Alternatively, the ground service base station of the serving cell may access the satellite operation management system to obtain the NTN ephemeris information of the neighboring cell.

[0010] According to a preferred embodiment of this disclosure, the enhancement method further includes: The ground serving base station of the serving cell interacts with the ground serving base station of the neighboring cell through a communication interface to obtain the satellite beam hopping configuration information; Alternatively, the ground serving base station of the serving cell may access the 5G core network to obtain the satellite beam hopping configuration information of the neighboring cell.

[0011] According to a preferred embodiment of this disclosure, the SMTC configuration parameters include: SMTC period, initial offset value, and measurement window duration; the satellite hopping beam configuration information includes: satellite beam service period and time-division service window corresponding to each beam position.

[0012] To address the aforementioned technical problems, a second aspect of this disclosure proposes an RRM enhancement system for NTN, the enhancement system comprising: a terminal and a ground serving base station communicatively connected to the terminal; the terminal comprising: The data receiving module is used to receive the NTN configuration information of neighboring cells sent by the ground serving base station of the serving cell; the NTN configuration information includes: SSB transmission time data, SMTC configuration parameters, satellite beam hopping configuration information, and NTN ephemeris information; A wave position determination module is used for the terminal to determine the target wave position of the terminal based on its own position information and the NTN ephemeris information of the neighboring cells; The time difference determination module is used to determine the hopping beam service time window of the target position based on the satellite hopping beam configuration information, and to calculate the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window of the target position based on the hopping beam service time window. The measurement time determination module is used to update the SMTC configuration parameters through the time difference, and determine the SSB measurement time window based on the updated SMTC configuration parameters and the SSB transmission time data; The RRM measurement module is used to perform RRM measurement of SSB signals based on the SSB measurement time window and upload the RRM measurement to the ground service base station.

[0013] To address the aforementioned technical problems, a third aspect of this disclosure provides an electronic device, comprising: Processor; and A memory storing computer-executable instructions, which, when executed, cause the processor to perform the method described in any of the above embodiments.

[0014] To address the aforementioned technical problems, a fourth aspect of this disclosure provides a computer storage medium that stores one or more programs, which, when executed by a processor, implement the method described in any of the above embodiments.

[0015] Compared with existing technologies, this application has the following advantages: The terminal receives the neighboring cell NTN configuration, which includes SSB transmission, SMTC, beam hopping, and ephemeris, from the ground base station. It determines the target beam position by combining its own position with the neighboring cell ephemeris. Based on the beam hopping configuration, it calculates the time difference between the target beam position SSB service window and the original SMTC window. It updates the SMTC parameters using this difference and generates a measurement window that matches the beam hopping timing by combining the SSB transmission data. The terminal completes the RRM measurement of the SSB within this window and reports it to the base station. This solution can avoid measurement mismatch and satellite-to-ground handover failure caused by the mismatch between the measurement window and the beam service time in the beam hopping scenario. It does not require a significant extension of the measurement window, effectively controls terminal power consumption, and improves satellite-to-ground handover stability and user service continuity.

[0016] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic flowchart of an NTN RRM enhancement method according to an embodiment of the present disclosure is shown; Figure 2 A second schematic flowchart of an NTN RRM enhancement method according to an embodiment of the present disclosure is shown; Figure 3 A schematic flowchart of an NTN RRM enhancement method according to an embodiment of the present disclosure is shown in part three. Figure 4 A schematic diagram of an RRM enhancement system architecture for an NTN according to an embodiment of the present disclosure is shown; Figure 5 A schematic diagram of an electronic device structure according to an embodiment of the present disclosure is shown. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The same reference numerals in the accompanying drawings denote the same or similar elements, components, or parts, and therefore repeated descriptions of the same or similar elements, components, or parts may be omitted below. It should also be understood that although qualifiers such as first, second, third, etc., indicating numbers may be used herein to describe various devices, elements, components, or parts, these devices, elements, components, or parts should not be limited by these qualifiers. That is, these qualifiers are only used to distinguish one from another. For example, a first device may also be referred to as a second device, without departing from the essence of the technical solution of this disclosure. Furthermore, the terms "and / or" and "and / or" refer to all combinations including the first or more of the listed items.

[0021] Please see Figure 1 , Figure 1 This is one of the flowcharts of an NTN RRM enhancement method provided in this disclosure, as shown below. Figure 1 As shown, the enhancement methods include: S11. The terminal receives the NTN configuration information of the neighboring cell sent by the ground serving base station of the serving cell; the NTN configuration information includes: SSB transmission time data, SMTC configuration parameters, satellite hopping beam configuration information and NTN ephemeris information.

[0022] In this embodiment, the ground service base station sends complete neighboring cell NTN configuration information to the terminal, integrating four key data types: SSB transmission time, SMTC parameters, satellite hopping beam configuration, and NTN ephemeris. It sends hopping beam timing, satellite orbit, and measurement window related parameters to the terminal all at once. This method allows the terminal to obtain all the basic data required for calculating and adapting the SMTC offset locally without having to interact with the base station multiple times, reducing air interface signaling overhead. At the same time, it provides complete input support for the terminal to autonomously identify the beam position and correct the measurement window, avoiding the problem of RRM measurement failure caused by missing information at the data source level.

[0023] In this embodiment, SSB: Synchronization Signal Block, is a very important component, mainly used to help the receiver correctly synchronize and decode signals; NTN: Non-Terrestrial Network, is a non-terrestrial network (satellite-ground integrated communication network); SMTC: SSB Measurement Timing Configuration, is the measurement time configuration of the synchronization signal block; NTN ephemeris information is orbital data dedicated to the 5G non-terrestrial network (NTN), carried in the SIB19 system message, containing core orbital parameters such as satellite reference time, three-dimensional position / velocity vector or Kepler-6 orbital elements, and ephemeris validity duration, used to accurately describe the real-time motion trajectory of the satellite.

[0024] In this embodiment, the SMTC configuration parameters include: SMTC period, initial offset value, and measurement window duration; the satellite hopping beam configuration information includes: satellite beam service period and time-division service window corresponding to each beam position.

[0025] In this embodiment, the UE (terminal) receives the SSB (Segment Switching Bus) transmission configuration of the neighboring NTN cell from the source gNB / serving cell, determines the SSB transmission period and transmission time, gNB: next-generation base station (5G / NTN terrestrial serving base station); SMTC configuration determines the SSB signal measurement period and the start time t1 and duration T of the measurement window; satellite beam hopping configuration includes the satellite beam service period P, i.e., the satellite beam periodically scans different positions; and the beam hopping pattern within each satellite beam period, i.e., the service time window corresponding to different positions and the duration of the service time window. Only within the corresponding time window does the satellite beam provide communication services to the terminal of that position, i.e., uplink and downlink transmission.

[0026] In this embodiment, the ephemeris information of neighboring NTN cells can be obtained in the following three ways: ① configuration of the serving cell; ② broadcast of neighboring NTN cells; ③ ephemeris information of neighboring NTN cells previously stored by the UE. Specifically, the serving cell's ground serving base station obtains the neighboring NTN ephemeris information according to the data acquisition configuration; or, the serving cell's ground serving base station obtains the neighboring NTN ephemeris information according to the broadcast data of the neighboring cell's ground serving base station; or, the serving cell's ground serving base station uses the historical NTN ephemeris information of neighboring cells previously stored by the terminal as the NTN ephemeris information.

[0027] S12. The terminal determines the target wavelength of the terminal based on its own location information and the NTN ephemeris information of the neighboring cells.

[0028] In this embodiment, the terminal integrates its own location data with the ephemeris information of neighboring NTN cells to determine the target beam position. Based on the ephemeris, the satellite orbit and beam coverage are reconstructed, and the terminal's geographical location is matched to lock the current beam position. This solution does not require the base station to issue a beam position identifier. The terminal completes the beam position identification locally, eliminating the signaling interaction between the base station's location calculation and beam position issuance, reducing air interface overhead. At the same time, it provides an accurate basis for subsequent calculation of beam hopping service time difference and correction of SMTC offset, avoiding RRM measurement errors caused by incorrect beam position determination from the source.

[0029] S13. The terminal determines the hopping beam service time window of the target position based on the satellite hopping beam configuration information, and calculates the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window of the target position based on the hopping beam service time window.

[0030] In this embodiment, the terminal uses the satellite hopping beam configuration information sent by the base station to query the beam service time window corresponding to the current target beam position, and then compares the start time of the SSB service of the beam position with the start time of the original SMTC window to calculate the time offset difference between the two. This difference can accurately characterize the degree of misalignment between the measurement window and the SSB transmission timing, providing a precise compensation amount for subsequent correction of SMTC parameters. It can accurately eliminate the timing deviation caused by hopping beam time division coverage, and fundamentally avoid measurement omissions caused by the measurement window missing the SSB signal.

[0031] S14. The terminal updates the SMTC configuration parameters through the time difference, and determines the SSB measurement time window based on the updated SMTC configuration parameters and SSB transmission time data.

[0032] In this embodiment, the terminal uses the calculated timing difference to correct the original SMTC configuration parameters, and then combines the SSB transmission time data to generate a new SSB measurement window adapted to the beam hopping timing. By calibrating the measurement window with the satellite beam service period through offset compensation, there is no need to lengthen the measurement window duration. While controlling the terminal's RF power consumption, it ensures that the measurement window is aligned with the SSB transmission time of neighboring cells, effectively avoiding the problem of RRM measurement misalignment.

[0033] In this embodiment, based on its own location and the ephemeris information of neighboring NTN cells, the wavelength position n is determined, and the offset value between the starting position of the SSB service time window and the starting position of the SMTC service time window for that wavelength position is obtained. Then update the offset value t1+ Based on the updated SMTC offset value t1+ Determine the start time of the SSB measurement window.

[0034] S15. The terminal performs RRM measurement of the SSB signal based on the SSB measurement time window and uploads the RRM measurement to the ground service base station.

[0035] In this embodiment, the terminal completes the radio resource management measurement of neighboring cell SSB signals within the SSB measurement time window obtained after timing compensation, and transmits the measurement results back to the ground serving base station. The measurement window based on the matched beam hopping timing can stably capture effective SSB signals, and the measurement results are true and reliable. The base station completes the satellite-to-ground handover judgment based on the accurate measurement data, which greatly reduces the probability of handover failure and ensures the continuity of user services. At the same time, the narrow window measurement mode reduces the terminal's radio frequency activation time and saves terminal power consumption.

[0036] In this embodiment, the UE determines the measurement time window of SSB based on the new SMTC offset value, thereby completing the RRM measurement based on the SSB signal and reporting the RRM measurement result to the source gNB.

[0037] In this embodiment, the terminal receives the neighboring cell NTN configuration, including SSB transmission, SMTC, beam hopping, and ephemeris, from the ground base station. It determines the target beam position by combining its own location with the neighboring cell ephemeris. Based on the beam hopping configuration, it calculates the time difference between the target beam position's SSB service window and the original SMTC window. This difference is used to update the SMTC parameters. A measurement window matching the beam hopping timing is generated by combining the SSB transmission data. The terminal completes the SSB RRM measurement within this window and reports it to the base station. This solution avoids measurement mismatch and satellite-to-ground handover failures caused by mismatch between the measurement window and beam service time in beam hopping scenarios. It eliminates the need to significantly extend the measurement window, effectively controls terminal power consumption, and improves satellite-to-ground handover stability and user service continuity.

[0038] Please see Figure 2 , Figure 2 This is the second schematic diagram of an NTN RRM enhancement method provided in this disclosure, as follows: Figure 2 As shown, the enhancement methods include: S21. The ground service base station receives the location information uploaded by the terminal and determines the target wavelength of the terminal based on the NTN ephemeris information and the location information.

[0039] In this embodiment, the ground service base station receives the location information reported by the terminal and calculates and determines the target wave position of the terminal in a unified manner on the base station side in combination with the NTN ephemeris information. The terminal does not need to complete the orbit and wave position related calculations locally, which reduces the terminal's computing power and power consumption. At the same time, the base station can centrally coordinate the wave position information of the entire network, which facilitates the subsequent unified generation and distribution of SMTC parameters adapted to the hopping beam timing, reducing the risk of measurement failure caused by errors in local calculations by the terminal.

[0040] In this embodiment, the UE sends its location information to the source serving gNB. The source gNB / serving cell determines the UE's position information based on the ephemeris information of the neighboring NTN cell and the UE's location. The ephemeris information of the neighboring NTN cell can be obtained in three ways: ① through interaction with the neighboring gNB via the Xn interface; ② through the NG interface from the core network; ③ through the ephemeris gateway from the satellite operation and management (O&M) system. Specifically, the serving cell's ground serving base station interacts with the neighboring ground serving base station through the communication interface to obtain the NTN ephemeris information; or, the serving cell's ground serving base station accesses the 5G core network to obtain the neighboring NTN ephemeris information; or, the serving cell's ground serving base station accesses the satellite operation and management system to obtain the neighboring NTN ephemeris information.

[0041] S22. The ground service base station determines the actual SMTC configuration parameters of the hopping beam service time window for the target beam position where the terminal is located based on the target beam position and satellite hopping beam configuration information, and sends the actual SMTC configuration parameters to the terminal.

[0042] In this embodiment, the ground service base station combines the target band position corresponding to the terminal with the satellite hopping beam configuration information to pre-calculate the actual SMTC configuration parameters matching the service period of the band position and sends them to the terminal. The complex timing calculation is transferred to the base station to complete, simplifying the terminal's calculation logic, avoiding local calculation errors on the terminal, and the sent parameters can be directly aligned with the hopping beam SSB transmission time to prevent RRM measurement from being missed. At the same time, it reduces the terminal's local computing power consumption and lowers the terminal's power consumption.

[0043] In this embodiment, the source gNB / serving cell determines the SMTC offset value t1 corresponding to the hopping beam service time window of the UE's position based on the SSB satellite hopping beam configuration information of the neighboring NTN cell and the UE's position information. The source gNB / serving cell sends the determined SMTC configuration to the UE to ensure that the UE can detect the SSB signal within the SSB measurement time window.

[0044] In this embodiment, the satellite beam hopping configuration information of the neighboring NTN cell can be obtained in two ways: ① through interaction with the neighboring gNB via the Xn interface; ② through the NG interface from the core network. Specifically, the serving cell's ground serving base station interacts with the neighboring cell's ground serving base station via the communication interface to obtain the satellite beam hopping configuration information; or, the serving cell's ground serving base station accesses the 5G core network to obtain the neighboring cell's satellite beam hopping configuration information.

[0045] S23. The terminal performs RRM measurement of the SSB signal according to the actual configuration parameters of the SMTC and uploads the RRM measurement to the ground service base station.

[0046] In this embodiment, the terminal directly uses the actual SMTC configuration parameters adapted to the beam hopping timing issued by the base station to define the SSB measurement window, completes the radio resource management measurement of neighboring SSBs, and transmits the measurement results back to the ground serving base station. This eliminates the need for the terminal to calculate the timing offset locally, reducing the terminal's computational load. The measurement window is precisely matched with the SSB transmission period of the beam position, stably collecting effective measurement data, supporting the base station to reliably complete the satellite-to-ground handover decision, improving communication continuity, and saving terminal power consumption.

[0047] Specifically, the terminal determines the SSB measurement time window based on the actual SMTC configuration parameters and SSB transmission time data; and performs RRM measurement of the SSB signal based on the SSB measurement time window.

[0048] In this embodiment, the UE receives the SMTC configuration information of the neighboring NTN cell sent by the source gNB / serving cell, determines the SSB measurement window based on the traditional method, performs RRM measurement based on the SSB signal, and reports the RRM measurement result to the source gNB.

[0049] Please see Figure 3 , Figure 3 This is the third schematic diagram of an NTN RRM enhancement method provided in this disclosure, as shown in the following figure. Figure 3 As shown, the enhancement methods include: S31. The ground service base station predicts the terminal's predicted location information based on the terminal's motion trajectory, and determines the predicted position of the terminal based on the NTN ephemeris information and the predicted location information.

[0050] In this embodiment, the ground service base station obtains the predicted position by predicting the terminal's movement trajectory, and then combines the NTN ephemeris information to predict the terminal's subsequent predicted position. This allows the base station to know in advance the position the terminal is about to switch to, which facilitates the base station to pre-configure SMTC parameters adapted to the beam hopping timing and send them to the terminal in advance. This avoids measurement window mismatch and measurement failure after the terminal moves or the position changes, improves the smoothness of satellite-to-ground handover in mobile scenarios, and reduces the overhead caused by frequent signaling interactions.

[0051] In this embodiment, the gNB determines the location of the UE by predicting the UE's motion trajectory through AI, and then determines the UE's position information based on the ephemeris information of the neighboring NTN cell, and configures an appropriate SMTC offset value for the UE to ensure that the UE can detect the SSB signal within the SSB measurement time window.

[0052] S32. The ground service base station determines the SMTC prediction configuration parameters for the hopping beam service time window of the target beam position where the terminal is located based on the predicted beam position and satellite hopping beam configuration information, and sends the SMTC prediction configuration parameters to the terminal.

[0053] In this embodiment, the ground service base station combines the predicted wavefront obtained from the prediction with the satellite hopping beam configuration to pre-calculate the SMTC prediction configuration parameters adapted to the service period of the wavefront and sends them to the terminal. This can adapt the beam timing for the terminal after the move in advance, avoid the measurement window misalignment after the terminal moves and changes the wavefront, eliminate the need for the terminal to report the position in real time and recalculate, reduce frequent air interface signaling interactions, continuously ensure the effectiveness of RRM measurement, and improve the stability of satellite-to-ground handover in high-speed mobile scenarios.

[0054] In this embodiment, the UE predicts the SSB transmission time of its current position using the ephemeris information of the neighboring NTN cell, thereby dynamically adjusting the SMTC offset value, determining the SSB measurement time window, and performing SSB-based RRM measurement.

[0055] In this embodiment, after generating the predicted location information, the terminal determines the SSB predicted transmission time based on the NTN ephemeris information and the predicted location information; it dynamically adjusts the SMTC prediction configuration parameters based on the SSB predicted transmission time to determine the SSB predicted measurement time window, and performs RRM measurement of the SSB signal through the SSB predicted measurement time window.

[0056] In this embodiment, the terminal calculates the SSB predicted transmission time based on NTN ephemeris information and its own predicted position, and dynamically adjusts the SMTC predicted configuration parameters accordingly to generate the SSB predicted measurement time window, and completes the SSB signal RRM measurement within this window. This can adapt to the changes in wave position and timing caused by terminal movement in advance, continuously align with the satellite hopping beam service period, prevent measurement from being missed during movement, eliminate the need for frequent interaction with the base station to update the configuration, reduce air interface signaling overhead, and control terminal power consumption by relying on precise narrow window measurement.

[0057] Please see Figure 4 , Figure 4 This disclosure provides an NTN RRM enhancement system, which includes a terminal and a ground service base station that communicates with the terminal.

[0058] In this embodiment, the terminal includes: a data receiving module, a wave position determination module, a time difference determination module, a measurement time determination module, and an RRM measurement module.

[0059] In this embodiment, the data receiving module is used to receive the NTN configuration information of the neighboring cells sent by the ground serving base station of the serving cell; the NTN configuration information includes: SSB transmission time data, SMTC configuration parameters, satellite hopping beam configuration information, and NTN ephemeris information.

[0060] In this embodiment, the SMTC configuration parameters include: SMTC period, initial offset value, and measurement window duration; the satellite hopping beam configuration information includes: satellite beam service period and time-division service window corresponding to each beam position.

[0061] In this embodiment, the wave position determination module is used by the terminal to determine the target wave position of the terminal based on its own location information and the NTN ephemeris information of the neighboring cells.

[0062] In this embodiment, the time difference determination module is used to determine the hopping beam service time window of the target beam position according to the satellite hopping beam configuration information, and calculate the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window of the target beam position based on the hopping beam service time window.

[0063] In this embodiment, the measurement time determination module is used to update the SMTC configuration parameters through the time difference, and determine the SSB measurement time window based on the updated SMTC configuration parameters and SSB transmission time data.

[0064] In this embodiment, the RRM measurement module is used to perform RRM measurement of SSB signals based on the SSB measurement time window and upload the RRM measurement to the ground service base station.

[0065] In this embodiment, the ground service base station includes a data processing module, used to receive location information uploaded by the terminal and determine the target wavelength of the terminal based on the NTN ephemeris information and the location information.

[0066] In this embodiment, the data processing module is further configured to determine the actual SMTC configuration parameters of the hopping beam service time window of the target position where the terminal is located based on the target position and satellite hopping beam configuration information, and send the actual SMTC configuration parameters to the terminal.

[0067] In this embodiment, the RRM measurement module is also used to perform RRM measurement of the SSB signal according to the actual configuration parameters of the SMTC, and upload the RRM measurement to the ground service base station.

[0068] In this embodiment, the data processing module is further configured to predict the predicted position information of the terminal based on the terminal's motion trajectory, and determine the predicted position of the terminal based on the NTN ephemeris information and the predicted position information.

[0069] In this embodiment, the data processing module is further configured to determine the SMTC prediction configuration parameters of the hopping beam service time window of the target beam position where the terminal is located based on the predicted beam position and satellite hopping beam configuration information, and send the SMTC prediction configuration parameters to the terminal.

[0070] In this embodiment, the terminal further includes a transmission time prediction module, used to determine the SSB predicted transmission time based on NTN ephemeris information and predicted location information.

[0071] In this embodiment, the measurement time determination module is also used to dynamically adjust the SMTC prediction configuration parameters based on the SSB predicted transmission time to determine the SSB predicted measurement time window.

[0072] In this embodiment, the RRM measurement module is also used to perform RRM measurement of the SSB signal through the SSB prediction measurement time window.

[0073] In this embodiment, the ground service base station further includes: a data acquisition module, configured to acquire NTN ephemeris information of the neighboring cell according to the data acquisition configuration; or, acquire NTN ephemeris information of the neighboring cell according to the broadcast data of the ground service base station of the neighboring cell; or, use historical NTN ephemeris information of the neighboring cell stored in advance by the terminal as NTN ephemeris information; or, the base station interacts with the ground service base station of the neighboring cell through the communication interface with the ground service base station of the neighboring cell to acquire NTN ephemeris information; or, access the 5G core network to acquire NTN ephemeris information of the neighboring cell; or, access the satellite operation management system to acquire NTN ephemeris information of the neighboring cell.

[0074] In this embodiment, the data acquisition module is used to interact with the ground service base station of the neighboring cell through the communication interface with the ground service base station of the neighboring cell to obtain satellite beam hopping configuration information; or, access the 5G core network to obtain the satellite beam hopping configuration information of the neighboring cell.

[0075] like Figure 5 As shown, this embodiment of the present disclosure provides an electronic device, including a processor 1110, a communication interface 1120, a memory 1130, and a communication bus 1140, wherein the processor 1110, the communication interface 1120, and the memory 1130 communicate with each other through the communication bus 1140. Memory 1130 is used to store computer programs; When the processor 1110 executes the program stored in the memory 1130, it implements any of the above methods.

[0076] The electronic device provided in this embodiment of the present disclosure includes a processor 1110 that receives NTN configuration information of neighboring cells from the ground serving base station of the serving cell by executing a program stored in the memory 1130. The NTN configuration information includes SSB transmission time data, SMTC configuration parameters, satellite hopping beam configuration information, and NTN ephemeris information. The terminal determines the target position of the terminal based on its own position information and the NTN ephemeris information of the neighboring cells. The terminal determines the hopping beam service time window of the target position based on the satellite hopping beam configuration information, and calculates the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window based on the hopping beam service time window. The terminal updates the SMTC configuration parameters through the time difference, and determines the SSB measurement time window based on the updated SMTC configuration parameters and the SSB transmission time data. The terminal performs RRM measurement of the SSB signal based on the SSB measurement time window and uploads the RRM measurement to the ground serving base station.

[0077] The communication bus 1140 mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus 1140 can be divided into an address bus, a data bus, and a component bus, etc. For ease of illustration, it is represented by only one thick line in the figure, but this does not indicate that there is only one bus or one type of bus.

[0078] The communication interface 1120 is used for communication between the above-mentioned electronic device and other devices.

[0079] The memory 1130 may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory 1130 may also be at least one storage device located remotely from the aforementioned processor 1110.

[0080] The processor 1110 mentioned above can be a general-purpose processor 1110, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0081] This disclosure provides a computer-readable storage medium storing one or more programs that can be executed by one or more processors 1110 to implement the methods of any of the above embodiments.

[0082] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this disclosure is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0083] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for enhancing RRM in NTN, characterized in that, The enhancement method includes: The terminal receives the NTN configuration information of the neighboring cell from the ground serving base station of the serving cell; the NTN configuration information includes: SSB transmission time data, SMTC configuration parameters, satellite beam hopping configuration information, and NTN ephemeris information; The terminal determines its target wavelength position based on its own location information and the NTN ephemeris information of the neighboring cells. The terminal determines the hopping beam service time window of the target position based on the satellite hopping beam configuration information, and calculates the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window of the target position based on the hopping beam service time window. The terminal updates the SMTC configuration parameters using the time difference, and determines the SSB measurement time window based on the updated SMTC configuration parameters and the SSB transmission time data. The terminal performs RRM measurement of the SSB signal based on the SSB measurement time window and uploads the RRM measurement to the ground service base station.

2. The enhancement method according to claim 1, characterized in that, The enhancement method further includes: The ground service base station receives the location information uploaded by the terminal and determines the target wavelength of the terminal based on the NTN ephemeris information and the location information. The ground service base station determines the actual SMTC configuration parameters of the hopping beam service time window of the target beam position where the terminal is located based on the target beam position and the satellite hopping beam configuration information, and sends the actual SMTC configuration parameters to the terminal. The terminal performs RRM measurement of the SSB signal according to the actual configuration parameters of the SMTC, and uploads the RRM measurement to the ground service base station.

3. The enhancement method according to claim 1, characterized in that, The enhancement method further includes: The ground service base station predicts the predicted location information of the terminal based on the terminal's motion trajectory, and determines the predicted position of the terminal based on the NTN ephemeris information and the predicted location information. The ground service base station determines the SMTC prediction configuration parameters for the hopping beam service time window of the target beam position where the terminal is located based on the predicted beam position and the satellite hopping beam configuration information, and sends the SMTC prediction configuration parameters to the terminal.

4. The enhancement method according to claim 3, characterized in that, The enhancement method further includes: The terminal determines the SSB predicted transmission time based on the NTN ephemeris information and the predicted location information; The SMTC prediction configuration parameters are dynamically adjusted based on the SSB prediction transmission time to determine the SSB prediction measurement time window, and the RRM measurement of the SSB signal is performed through the SSB prediction measurement time window.

5. The enhancement method according to claim 1, characterized in that, The enhancement method further includes: The ground serving base station of the serving cell obtains the NTN ephemeris information of the neighboring cell according to the data acquisition configuration; Alternatively, the ground serving base station of the serving cell obtains the NTN ephemeris information of the neighboring cell based on the broadcast data of the ground serving base station of the neighboring cell; Alternatively, the ground serving base station of the serving cell may use the historical NTN ephemeris information of neighboring cells previously stored by the terminal as the NTN ephemeris information; Alternatively, the ground serving base station of the serving cell may interact with the ground serving base station of the neighboring cell through a communication interface to obtain the NTN ephemeris information; Alternatively, the ground serving base station of the serving cell accesses the 5G core network to obtain the NTN ephemeris information of the neighboring cell; Alternatively, the ground service base station of the serving cell may access the satellite operation management system to obtain the NTN ephemeris information of the neighboring cell.

6. The enhancement method according to claim 1, characterized in that, The enhancement method further includes: The ground serving base station of the serving cell interacts with the ground serving base station of the neighboring cell through a communication interface to obtain the satellite beam hopping configuration information; Alternatively, the ground serving base station of the serving cell may access the 5G core network to obtain the satellite beam hopping configuration information of the neighboring cell.

7. The enhancement method according to any one of claims 1 to 6, characterized in that, The SMTC configuration parameters include: SMTC period, initial offset value, and measurement window duration; the satellite hopping beam configuration information includes: satellite beam service period and time-division service window corresponding to each beam position.

8. An RRM enhancement system for NTN, characterized in that, The enhancement system includes: a terminal and a ground service base station communicatively connected to the terminal; the terminal includes: The data receiving module is used to receive the NTN configuration information of neighboring cells sent by the ground serving base station of the serving cell; the NTN configuration information includes: SSB transmission time data, SMTC configuration parameters, satellite beam hopping configuration information, and NTN ephemeris information; A wave position determination module is used for the terminal to determine the target wave position of the terminal based on its own position information and the NTN ephemeris information of the neighboring cells; The time difference determination module is used to determine the hopping beam service time window of the target position based on the satellite hopping beam configuration information, and to calculate the time difference between the starting position of the SSB service time window and the starting position of the SMTC service time window of the target position based on the hopping beam service time window. The measurement time determination module is used to update the SMTC configuration parameters through the time difference, and determine the SSB measurement time window based on the updated SMTC configuration parameters and the SSB transmission time data; The RRM measurement module is used to perform RRM measurement of SSB signals based on the SSB measurement time window and upload the RRM measurement to the ground service base station.

9. An electronic device, characterized in that, include: processor; as well as A memory storing computer-executable instructions, which, when executed, cause the processor to perform the enhanced method according to any one of claims 1-7.

10. A computer storage medium, characterized in that, in, The computer storage medium stores one or more programs that, when executed by a processor, implement the enhanced method according to any one of claims 1-7.

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