WO2025007640A1 - 小区切换方法、装置、系统和电子设备 - Google Patents

小区切换方法、装置、系统和电子设备 Download PDF

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Publication number
WO2025007640A1
WO2025007640A1 PCT/CN2024/091698 CN2024091698W WO2025007640A1 WO 2025007640 A1 WO2025007640 A1 WO 2025007640A1 CN 2024091698 W CN2024091698 W CN 2024091698W WO 2025007640 A1 WO2025007640 A1 WO 2025007640A1
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Prior art keywords
cell
terminal
information
candidate
cell switching
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English (en)
French (fr)
Inventor
刘家祥
彭硕
蒋峥
佘小明
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a cell switching method, a cell switching device, a cell switching system, an electronic device, and a non-volatile computer-readable storage medium.
  • Non-Terrestrial Network There are two types of beams in the low-orbit satellite NTN (Non-Terrestrial Network): quasi-terrestrial fixed beams and ground mobile beams. Since the cell coverage of ground mobile beams changes in real time as the satellite moves, the coverage status change rate is higher.
  • the NR (New Radio) Rel-17 (Release-17) NTN project supports broadcasting the real-time location of the cell coverage reference point at each moment for quasi-terrestrial fixed-beam cells to support location-based conditional switching.
  • a cell switching method on the network side including: broadcasting first position change information of a cell coverage reference point of a current serving cell within a first preset time period to a terminal, so that the terminal determines whether to trigger cell switching based on the first position change information; in a case where the terminal determines that the cell switching is triggered, sending relevant information for performing cell switching to the terminal, so that the terminal performs cell switching based on the relevant information.
  • the first location change information is used to instruct the terminal to predict the first real-time location of the cell coverage reference point of the current serving cell based on the first location change information, so that the terminal determines whether to trigger cell switching based on the first real-time location.
  • the first real-time position is used to instruct the terminal to determine a first distance between the terminal and a cell coverage reference point of a current serving cell based on the first real-time position and the terminal's position information, and trigger cell switching when the first distance is greater than a first threshold.
  • the cell switching method on the network side further includes: after the terminal determines the situation that triggers the cell switching, In this case, candidate cells for cell switching are predicted according to the location information of the terminal returned by the terminal, and the relevant information of the cell switching includes configuration information of the candidate cells.
  • the configuration information of the candidate cell includes second position change information of the cell coverage reference point of the candidate cell within a second preset time period, so that the terminal performs cell switching according to the second position change information and the first position change information.
  • the first position change information is used to instruct the terminal to predict the first real-time position of the cell coverage reference point of the current service cell based on the first position change information, so that the terminal can determine the first distance between the terminal and the cell coverage reference point of the current service cell based on the first real-time position and the position information of the terminal;
  • the second position change information is used to instruct the terminal to predict the second real-time position of the cell coverage reference point of the candidate cell based on the second position change information, so that the terminal can determine the second distance between the terminal and the cell coverage reference point of the candidate cell based on the second real-time position and the position information of the terminal, and perform cell switching based on the first distance and the second distance.
  • the cell switching is performed when the first distance is greater than the second threshold and the second distance is less than the third threshold.
  • predicting candidate cells for cell switching includes: predicting candidate cells based on signal quality of neighboring cells of a current serving cell returned by the terminal and location information of the terminal.
  • the configuration information of the candidate cell includes radio resource configuration information.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • the cell switching method on the network side further includes: when the terminal completes the cell switching, receiving a resource release message sent by the target cell of the cell switching.
  • the cell switching method on the network side further includes: when the terminal sends a request information for changing a candidate cell for cell switching, updating the configuration information of the candidate cell according to the number of times the candidate cell is requested to be changed.
  • the candidate cell includes the candidate cell at the current moment
  • updating the configuration information of the candidate cell includes: when the number of times the replacement is requested is less than a fourth threshold, updating the configuration information of the candidate cell at the current moment; when the number of times the replacement is requested is greater than or equal to the fourth threshold, updating the configuration information of the candidate cell at the current moment and the configuration information of the candidate cell at the future moment.
  • the cell switching method on the network side also includes: when the terminal sends a change request information, updating the number of times the candidate cell is requested to be replaced; when the number of times the candidate cell is requested to be replaced is less than a fourth threshold, sending the updated number of times the candidate cell is requested to be replaced to the target cell for cell switching.
  • the cell switching method on the network side further includes: when the number of times the candidate cell is requested to be replaced is greater than or equal to a fourth threshold, resetting the number of times the candidate cell is requested to be replaced to zero.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the cell switching method on the network side also includes: when the satellite corresponding to the current service cell moves to the farthest point position corresponding to the first position change information, updating the first position change information to the third position change information; and sending a prompt message to the terminal that the first position change information has been updated so that the terminal receives the third position change information.
  • a cell switching method on the terminal side including: determining whether to trigger cell switching based on first position change information of a cell coverage reference point of a previous serving cell broadcast by a current serving cell within a first preset time period; returning the location information of the terminal to the current serving cell when it is determined that cell switching is triggered; and performing cell switching based on relevant information for cell switching sent by the current serving cell.
  • determining whether to trigger cell switching includes: predicting a first real-time position of a cell coverage reference point of a current serving cell based on first position change information; and determining whether to trigger cell switching based on the first real-time position.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • determining whether to trigger cell switching includes: determining a first distance between the terminal and a cell coverage reference point of a current serving cell based on the first real-time location and location information of the terminal; and triggering cell switching when the first distance is greater than a first threshold.
  • the cell switching related information includes configuration information of candidate cells for the cell switching, where the candidate cells are predicted based on the location information of the terminal as the current serving cell.
  • the configuration information of the candidate cell includes second position change information of the cell coverage reference point of the candidate cell within a second preset time period
  • performing cell switching includes: performing cell switching according to the second position change information and the first position change information.
  • performing cell switching includes: predicting a first real-time position of a cell coverage reference point of a current serving cell according to first position change information; determining a first distance between the terminal and the cell coverage reference point of the current serving cell according to the first real-time position and the position information of the terminal; predicting a second real-time position of a cell coverage reference point of a candidate cell according to second position change information; determining a second distance between the terminal and the cell coverage reference point of the candidate cell according to the second real-time position and the position information of the terminal; performing cell switching according to the first distance and the second distance. Switch.
  • performing cell switching includes: performing cell switching when the first distance is greater than a second threshold and the second distance is less than a third threshold.
  • the cell switching method on the terminal side further includes: in the case of determining that the cell switching is triggered, returning the signal quality of the neighboring cells of the current serving cell to the current serving cell to assist the current serving cell in predicting the candidate cell.
  • the cell switching method on the terminal side also includes: when the channel quality of the candidate cell for cell switching cannot meet the preset conditions, sending a request information for changing the candidate cell for cell switching to the current serving cell; receiving the updated candidate cell configuration information sent by the current serving cell, and the candidate cell configuration information is updated according to the number of times the candidate cell is requested to be replaced.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the candidate cell includes the candidate cell at the current moment
  • the configuration information of the candidate cell is updated through the following steps including: when the number of requested changes is less than a fourth threshold, updating the configuration information of the candidate cell at the current moment; when the number of requested changes is greater than or equal to the fourth threshold, updating the configuration information of the candidate cell at the current moment and the configuration information of the candidate cell at the future moment.
  • the cell switching method on the terminal side also includes: when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, receiving a prompt message sent by the current service cell that the first position change information is updated, and the first position change information is updated to the third position change information; and receiving the third position change information according to the prompt message.
  • a cell switching device on the network side including: a sending unit, used to broadcast first position change information of a cell coverage reference point of a current service cell within a first preset time period to a terminal, so that the terminal determines whether to trigger cell switching based on the first position change information; in a case where the terminal determines that cell switching is triggered, relevant information for performing cell switching is sent to the terminal, so that the terminal performs cell switching based on the relevant information.
  • the first location change information is used to instruct the terminal to predict the first real-time location of the cell coverage reference point of the current serving cell based on the first location change information, so that the terminal determines whether to trigger cell switching based on the first real-time location.
  • the first real-time position is used to instruct the terminal to determine a first distance between the terminal and a cell coverage reference point of a current serving cell based on the first real-time position and the terminal's position information, and trigger cell switching when the first distance is greater than a first threshold.
  • the cell switching device on the network side also includes: a prediction unit, which is used to predict candidate cells for cell switching based on the terminal location information returned by the terminal when the terminal determines to trigger cell switching.
  • the relevant information of cell switching includes configuration information of the candidate cells.
  • the configuration information of the candidate cell includes second position change information of the cell coverage reference point of the candidate cell within a second preset time period, so that the terminal performs cell switching according to the second position change information and the first position change information.
  • the first position change information is used to instruct the terminal to predict the first real-time position of the cell coverage reference point of the current service cell based on the first position change information, so that the terminal can determine the first distance between the terminal and the cell coverage reference point of the current service cell based on the first real-time position and the position information of the terminal;
  • the second position change information is used to instruct the terminal to predict the second real-time position of the cell coverage reference point of the candidate cell based on the second position change information, so that the terminal can determine the second distance between the terminal and the cell coverage reference point of the candidate cell based on the second real-time position and the position information of the terminal, and perform cell switching based on the first distance and the second distance.
  • the cell switching is performed when the first distance is greater than the second threshold and the second distance is less than the third threshold.
  • the prediction unit predicts the candidate cells according to the signal quality of the neighboring cells of the current serving cell returned by the terminal and the location information of the terminal.
  • the configuration information of the candidate cell includes radio resource configuration information.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • the cell switching device on the network side further includes: a receiving unit, configured to receive a resource release message sent by a target cell of the cell switching when the terminal completes the cell switching.
  • the cell switching device on the network side further includes: an updating unit, which is used to update the configuration information of the candidate cell according to the number of times the candidate cell is requested to be replaced when the terminal sends a replacement request information for the candidate cell for cell switching.
  • the candidate cells include the candidate cells at the current moment
  • the update unit updates the configuration information of the candidate cells at the current moment when the number of times requested to be replaced is less than a fourth threshold; when the number of times requested to be replaced is greater than or equal to the fourth threshold, the configuration information of the candidate cells at the current moment and the configuration information of the candidate cells at future moments are updated.
  • the updating unit updates the number of times the candidate cell is requested to be replaced when the terminal sends a replacement request message; the sending unit updates the number of times the candidate cell is requested to be replaced when the number of times the candidate cell is requested to be replaced is less than the fourth threshold. The number of times the new candidate cell is requested to be replaced is sent to the target cell for cell switching.
  • the updating unit resets the number of times the candidate cell is requested to be replaced to zero when the number of times the candidate cell is requested to be replaced is greater than or equal to a fourth threshold.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the updating unit updates the first position change information to the third position change information; the sending unit sends a prompt message that the first position change information has been updated to the terminal so that the terminal receives the third position change information.
  • a cell switching device on the terminal side including: a determination unit, used to determine whether to trigger cell switching based on first position change information of a cell coverage reference point of a previous serving cell broadcast by a current serving cell within a first preset time period; a sending unit, used to return the location information of the terminal to the current serving cell when it is determined that the cell switching is triggered; and a switching unit, used to perform cell switching according to relevant information for cell switching sent by the current serving cell.
  • the determination unit predicts a first real-time position of a cell coverage reference point of a current serving cell based on the first position change information; and determines whether to trigger a cell handover based on the first real-time position.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • the determination unit determines a first distance between the terminal and a cell coverage reference point of a current serving cell based on the first real-time location and location information of the terminal; and the switching unit triggers cell switching when the first distance is greater than a first threshold.
  • the cell switching related information includes configuration information of candidate cells for the cell switching, where the candidate cells are predicted based on the location information of the terminal as the current serving cell.
  • the configuration information of the candidate cell includes second position change information of the cell coverage reference point of the candidate cell within a second preset time period, and the switching unit performs cell switching according to the second position change information and the first position change information.
  • the switching unit predicts a first real-time position of a cell coverage reference point of a current serving cell based on first position change information, determines a first distance between the terminal and the cell coverage reference point of the current serving cell based on the first real-time position and the position information of the terminal, predicts a second real-time position of a cell coverage reference point of a candidate cell based on second position change information, determines a second distance between the terminal and the cell coverage reference point of the candidate cell based on the second real-time position and the position information of the terminal, and performs cell switching based on the first distance and the second distance.
  • the switching unit is switched when the first distance is greater than the second threshold and the second distance is less than the third threshold In this case, cell switching is performed.
  • the sending unit when determining to trigger cell switching, the sending unit returns the signal quality of the neighboring cells of the current serving cell to the current serving cell to assist the current serving cell in predicting the candidate cell.
  • the sending unit when the channel quality of the candidate cell for cell switching cannot meet the preset conditions, sends a request information for changing the candidate cell for cell switching to the current serving cell.
  • the cell switching device on the terminal side also includes a receiving unit for receiving the configuration information of the updated candidate cell sent by the current serving cell, and the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be changed.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the candidate cell includes the candidate cell at the current moment
  • the configuration information of the candidate cell is updated through the following steps including: when the number of requested changes is less than a fourth threshold, updating the configuration information of the candidate cell at the current moment; when the number of requested changes is greater than or equal to the fourth threshold, updating the configuration information of the candidate cell at the current moment and the configuration information of the candidate cell at the future moment.
  • the receiving unit when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, the receiving unit receives a prompt message sent by the current service cell that the first position change information is updated, the first position change information is updated to the third position change information, and the third position change information is received according to the prompt message.
  • a cell switching system comprising: a first cell switching device, used to execute the cell switching method on the terminal side in any of the above embodiments; and a second cell switching device, used to execute the cell switching method on the network side in any of the above embodiments.
  • an electronic device comprising: a memory; and a processor coupled to the memory, the processor being configured to execute the cell switching method on the network side or the cell switching method on the terminal side in any one of the above-mentioned embodiments based on instructions stored in the memory device.
  • a non-volatile computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the cell switching method on the network side or the cell switching method on the terminal side in any of the above embodiments is implemented.
  • a computer program comprising: instructions, which, when executed by a processor, cause the processor to execute the cell switching method on the network side or the cell switching method on the terminal side in any one of the above-mentioned embodiments.
  • FIG1 shows a flow chart of some embodiments of the cell switching method disclosed herein
  • FIG2a is a schematic diagram showing some embodiments of the ground mobile beam satellite cell of the present disclosure.
  • FIG2b shows a signaling diagram of some embodiments of the cell switching method of the present disclosure
  • FIG2c shows a flow chart of other embodiments of the cell switching method disclosed herein;
  • FIG2d shows a flow chart of some other embodiments of the cell switching method disclosed herein;
  • FIG3 shows a flow chart of some further embodiments of the cell switching method disclosed in the present invention.
  • FIG4a shows a block diagram of some embodiments of a cell switching apparatus of the present disclosure
  • FIG4b shows a block diagram of some other embodiments of the cell switching device disclosed in the present invention.
  • FIG5 shows a block diagram of some embodiments of the electronic device of the present disclosure
  • FIG6 is a block diagram showing some other embodiments of the electronic device of the present disclosure.
  • FIG. 7 shows a block diagram of some embodiments of a cell switching system of the present disclosure.
  • the inventor of the present disclosure has found that the above-mentioned related technologies have the following problems: In this case, a large broadcast message update overhead will be introduced, resulting in a decrease in communication performance.
  • the present disclosure proposes a cell switching technical solution that can avoid introducing a large broadcast message update overhead.
  • adding the cell coverage reference point information to the broadcast message of the quasi-terrestrial fixed beam cell can support the switching of the quasi-terrestrial fixed beam condition based on the location.
  • the above method does not support the switching of the ground mobile beam condition based on the location information.
  • the present invention based on the characteristics of ground mobile beam satellite cells, enables the terminal to predict the change of the cell coverage reference point based on the network side broadcast message; enables the terminal to obtain the real-time position of the cell coverage reference point, and then triggers the conditional switching based on the position information. In this way, the accuracy and robustness of the ground mobile beam satellite cell switching can be improved.
  • FIG. 1 shows a flow chart of some embodiments of the cell switching method of the present disclosure.
  • step 110 the first position change information of the cell coverage reference point (Reference point) of the current service cell within a first preset time period is broadcast to the terminal, so that the terminal determines whether to trigger cell switching based on the first position change information.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • the first position change information is trajectory change information
  • the current serving cell is a ground mobile beam satellite cell.
  • the ground mobile beam satellite cell broadcasts the trajectory change information of its cell coverage reference point.
  • the trajectory change information may include a list of cell coverage reference point locations and their corresponding relationships with time.
  • the first location change information is used to instruct the terminal to predict the first real-time location of the cell coverage reference point of the current serving cell based on the first location change information, so that the terminal determines whether to trigger cell switching based on the first real-time location.
  • the first real-time position is used to instruct the terminal to determine a first distance between the terminal and a cell coverage reference point of the current serving cell based on the first real-time position and the terminal's position information, and trigger cell switching when the first distance is greater than a first threshold.
  • the terminal calculates the distance between the terminal and the cell coverage reference point of the current service cell based on the trajectory change information of the cell coverage reference point, the ephemeris information corresponding to the current service cell, and the terminal's location information; when the distance is greater than the first threshold, the process of measuring and reporting to the current service cell is triggered.
  • the content of the measurement report may include the location information of the terminal and the signal quality of the neighboring cells of the current serving cell.
  • step 120 when the terminal determines to trigger cell switching, relevant information for performing cell switching is sent to the terminal so that the terminal performs cell switching according to the relevant information.
  • the network side broadcasts the track change information of the cell coverage reference point, so that the terminal can decide whether to trigger cell switching based on this information. In this way, not only can the cell switching be achieved without introducing a large broadcast message update overhead, but also the accuracy and robustness of the cell switching can be improved, thereby improving the communication performance.
  • candidate cells for the cell handover are predicted based on the terminal's location information returned by the terminal, and the relevant information for the cell handover includes configuration information of the candidate cells.
  • the network side (such as the current serving cell) sends the conditional switching configuration (such as relevant information for performing cell switching) to the terminal according to the content of the measurement report.
  • the conditional switching configuration such as relevant information for performing cell switching
  • the configuration information of the candidate cell includes second position change information of the cell coverage reference point of the candidate cell within a second preset time period, so that the terminal performs cell switching according to the second position change information and the first position change information.
  • the network side can predict multiple candidate cells based on the ephemeris information and the terminal's location information, and send down the conditional switching configuration.
  • the conditional switching configuration may include wireless resource configuration information and trajectory change information of the candidate cell (such as the second position change information of the cell coverage reference point of the candidate cell within the second preset time period).
  • the first position change information is used to instruct the terminal to predict the first real-time position of the cell coverage reference point of the current service cell based on the first position change information, so that the terminal can determine the first distance between the terminal and the cell coverage reference point of the current service cell based on the first real-time position and the terminal's position information.
  • the second position change information is used to instruct the terminal to predict the second real-time position of the cell coverage reference point of the candidate cell based on the second position change information, so that the terminal can determine the second distance between the terminal and the cell coverage reference point of the candidate cell based on the second real-time position and the terminal's position information, and perform cell switching based on the first distance and the second distance.
  • the cell switching is performed when the first distance is greater than the second threshold and the second distance is less than the third threshold.
  • the terminal switches the configuration according to the conditions and accesses the candidate cells in turn.
  • the execution conditions of this step may include: the terminal predicts the change of the position of the cell coverage reference point of the current serving cell and the candidate cell over time based on the trajectory change information (e.g., the cell coverage of the current serving cell at the current moment The real-time position of the coverage reference point of the terminal and the real-time position of the cell coverage reference point of the candidate cell); when the distance between the terminal and the cell coverage reference point of the current serving cell is greater than a second threshold, and the distance between the terminal and the cell coverage reference point of the candidate cell is less than a third threshold, conditional switching is performed to switch the terminal to the target cell (such as the candidate cell).
  • the target cell such as the candidate cell
  • the configuration information of the candidate cell includes radio resource configuration information.
  • candidate cells are predicted based on the signal quality of neighboring cells of the current serving cell returned by the terminal and the location information of the terminal.
  • a resource release message sent by the target cell of the cell switching is received.
  • the target cells sequentially send resource release messages to the source cells of the cell handover.
  • the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be replaced.
  • the replacement request message includes wireless measurement information of neighboring cells of the current serving cell.
  • the terminal sends a replacement request message for the candidate cell to the current serving cell.
  • the replacement request message may include a wireless measurement report of a neighboring cell of the current serving cell; the network side maintains the conditional switching configuration, updates the counter of the candidate cell, and increases the value of the counter by one each time a replacement request message of the candidate cell is received.
  • the candidate cell includes the candidate cell at the current moment.
  • the configuration information of the candidate cell at the current moment is updated; when the number of requested changes is greater than or equal to the fourth threshold, the configuration information of the candidate cell at the current moment and the configuration information of the candidate cell at the future moment are updated.
  • the number of times the candidate cell is requested to be changed is updated; when the number of times the candidate cell is requested to be changed is less than a fourth threshold, the updated number of times the candidate cell is requested to be changed is sent to the target cell of the cell switching.
  • the network side when the counter value is less than the fourth threshold, the network side only updates the configuration of the candidate cell that should be accessed at the current moment; when the counter value is greater than or equal to the fourth threshold, the network side updates the configuration of the candidate cell at the current moment and later.
  • the number of times the candidate cell is requested to be replaced is greater than or equal to a fourth threshold, the number of times the candidate cell is requested to be replaced is reset to zero.
  • the configuration of the candidate cell when only the configuration of the candidate cell currently accessed is updated, the configuration of the candidate cell The value of the counter is transferred to the target cell as the cell is switched; when the configuration of the candidate cell at the current time and later time is updated, the counter of the candidate cell is reset to zero, and the target cell starts to maintain the counter again.
  • the first position change information is updated to the third position change information; a prompt message indicating that the first position change information has been updated is sent to the terminal so that the terminal receives the third position change information.
  • a ground mobile beam satellite cell broadcasts trajectory change information of its cell coverage reference point information; when the satellite corresponding to the ground mobile beam satellite cell moves to the farthest point of the trajectory change information, the trajectory change information update process is triggered; the satellite broadcasts the updated trajectory change information and updates the valueTag value in the SIB1 (System Information Block) message, and the updated valueTag value is used to indicate to the terminal that the trajectory change information has been updated and needs to be received again; when the terminal receives a change in the valueTag value in the broadcast message, the updated trajectory change information in the broadcast message is received again.
  • SIB1 System Information Block
  • FIG. 2 a shows a schematic diagram of some embodiments of the ground mobile beam satellite cell of the present disclosure.
  • satellite A and satellite B correspond to different ground mobile beam satellite cells respectively.
  • the terminal is located in the overlapping area of two ground mobile beam satellite cells, that is, the handover area.
  • the coverage of ground mobile beam satellite cells changes with the movement of satellites. If the cell coverage reference point information is broadcast in real time, a large broadcast message update overhead will be introduced. Therefore, the network side needs to provide relevant auxiliary information so that the terminal can accurately infer the location of the cell coverage reference point, and then achieve accurate conditional switching based on the location information.
  • the network side may broadcast the track change information of the cell coverage reference point, and the terminal may infer the real-time position of the cell coverage reference point based on this information and trigger conditional switching, thereby improving the accuracy and robustness of ground mobile beam satellite cell switching.
  • the network side broadcasts the trajectory change information of the cell coverage reference point, indicating the change of the cell coverage reference point over time within a period of time; secondly, the terminal determines whether it is at the edge of the cell based on the real-time position of the cell coverage reference point predicted by the broadcast message, and then determines whether to trigger the measurement report; then, the network side predicts multiple candidate target cells based on the terminal position reported by the terminal, and in the conditional switching configuration, sends the trajectory change information of the cell coverage reference point of the candidate cell to the terminal; finally, the terminal predicts the position change of the cell coverage reference point of the candidate cell based on this information, and autonomously triggers the execution of conditional switching.
  • FIG. 2 b shows a signaling diagram of some embodiments of the cell switching method of the present disclosure.
  • the ground mobile beam satellite cell (i.e., the current serving satellite) Broadcast the track change information of its cell coverage reference point.
  • the track change information may include a list of cell coverage reference point locations and their corresponding relationships with time.
  • the terminal calculates the distance between the terminal and the cell coverage reference point of the current service cell based on the trajectory change information of the cell coverage reference point, the ephemeris information corresponding to the current service cell, and the terminal's location information; when the distance is greater than the first threshold (threshold 1), the process of measuring and reporting to the current service cell is triggered.
  • the first threshold threshold 1
  • the terminal performs measurement reporting to the serving satellite.
  • the content of the measurement reporting may include the location information of the terminal and the signal quality of the neighboring cells of the current serving cell.
  • the serving satellite may predict a plurality of candidate cells based on the ephemeris information and the location information of the terminal.
  • the serving satellite sends a handover request to candidate satellite 1 corresponding to candidate cell 1 and candidate satellite 2 corresponding to candidate cell 2, and receives handover responses from candidate satellite 1 and candidate satellite 2.
  • step 260b the serving satellite sends a conditional handover configuration, which may include radio resource configuration information and candidate cell trajectory change information.
  • step 270b the terminal accesses the candidate cells in turn according to the conditional switching configuration.
  • the execution conditions of this step may include: the terminal predicts the change of the position of the cell coverage reference point of the current serving cell and the candidate cell over time according to the trajectory change information; when the distance between the terminal and the cell coverage reference point of the current serving cell is greater than the second threshold (threshold 2), and the distance between the terminal and the cell coverage reference point of the candidate cell is less than the third threshold (threshold 3), conditional switching is performed to switch the terminal to the target cell.
  • step 280b when the terminal is located at position L1, the distance between the terminal and the cell coverage reference point of the serving satellite is greater than the second threshold, and the distance between the terminal and the cell coverage reference point of candidate satellite 1 is less than the third threshold, and the terminal is switched to the cell of candidate satellite 1.
  • the distance between the terminal and the cell coverage reference point of the serving satellite is greater than the second threshold, and the distance between the terminal and the cell coverage reference point of candidate satellite 2 is less than the third threshold, and the terminal is switched to the cell of candidate satellite 2.
  • the terminal can switch autonomously without frequent measurement reporting and configuration, thereby improving the efficiency of cell switching and communication performance.
  • FIG. 2c shows a flow chart of other embodiments of the cell switching method of the present disclosure.
  • step 210c the terminal determines that the channel quality of a candidate cell cannot meet the execution requirement of the conditional handover.
  • step 220c the terminal sends a replacement request message for the candidate cell to the current serving cell.
  • the replacement request message may include a radio measurement report performed by a neighboring cell of the current serving cell.
  • step 230c the network side maintains the conditional switching configuration and updates the counter of the candidate cell. Each time a change request message of the candidate cell is received, the value of the counter is increased by one.
  • step 240c it is determined whether the value of the counter is greater than or equal to a fourth threshold value (ie, threshold 4). If it is greater, step 250c is executed; if it is less, step 270c is executed.
  • a fourth threshold value ie, threshold 4
  • step 250c the network side updates the configuration of candidate cells at the current time and later times.
  • step 260c the counter of the candidate cell is reset to zero, and the target cell restarts maintaining the counter.
  • step 270c the network side only updates the configuration of the candidate cell that should be accessed at the current moment.
  • step 289c the value of the counter of the candidate cell is transferred to the target cell as the cell is switched.
  • FIG. 2d shows a flow chart of still some embodiments of the cell switching method of the present disclosure.
  • step 210d the ground mobile beam satellite cell broadcasts the trajectory change information of its cell coverage reference point information.
  • step 220d it is determined whether the satellite corresponding to the ground mobile beam satellite cell has moved to the farthest point of the track change information. If yes, step 230d is executed; if not, step 210d is repeated.
  • step 230d the trajectory change information update process is triggered; the satellite broadcasts the updated trajectory change information and updates the valueTag value in the SIB1 message.
  • step 240d when the valueTag value in the broadcast message received by the terminal changes, the updated track change information in the broadcast message is received again.
  • FIG3 shows a flow chart of some further embodiments of the cell switching method of the present disclosure.
  • step 310 it is determined whether to trigger cell switching based on first position change information of a cell coverage reference point of a previous serving cell broadcast by a current serving cell within a first preset time period.
  • step 320 when it is determined that a cell handover is triggered, the location information of the terminal is returned to the current serving cell.
  • step 330 cell switching is performed according to the relevant information for cell switching sent by the current serving cell.
  • a first real-time position of a cell coverage reference point of a current serving cell is predicted; and based on the first real-time position, it is determined whether to trigger a cell switching.
  • the first location change information includes the cell coverage reference point of the current serving cell in the first A plurality of first positions within a preset time period, and time information corresponding to each of the plurality of first positions.
  • a first distance between the terminal and a cell coverage reference point of a current serving cell is determined based on the first real-time location and location information of the terminal; and a cell switch is triggered when the first distance is greater than a first threshold.
  • the configuration information of the candidate cell includes second position change information of a cell coverage reference point of the candidate cell within a second preset time period, and the cell switching is performed according to the second position change information and the first position change information.
  • the first real-time position of the cell coverage reference point of the current serving cell is predicted; based on the first real-time position and the position information of the terminal, the first distance between the terminal and the cell coverage reference point of the current serving cell is determined; based on the second position change information, the second real-time position of the cell coverage reference point of the candidate cell is predicted; based on the second real-time position and the position information of the terminal, the second distance between the terminal and the cell coverage reference point of the candidate cell is determined; and cell switching is performed based on the first distance and the second distance.
  • cell switching is performed when the first distance is greater than the second threshold and the second distance is less than the third threshold.
  • the signal quality of the neighboring cells of the current serving cell is returned to the current serving cell to assist the current serving cell in predicting the candidate cells.
  • a request to replace the candidate cell for cell switching is sent to the current serving cell; the updated configuration information of the candidate cell sent by the current serving cell is received, and the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be replaced.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the candidate cell includes the candidate cell at the current moment
  • the configuration information of the candidate cell is updated through the following steps including: when the number of requested changes is less than a fourth threshold, updating the configuration information of the candidate cell at the current moment; when the number of requested changes is greater than or equal to the fourth threshold, updating the configuration information of the candidate cell at the current moment and the configuration information of the candidate cell at the future moment.
  • a prompt message that the first position change information sent by the current service cell is updated is received, and the first position change information is updated to the third position change information; and the third position change information is received according to the prompt message.
  • a ground mobile beam satellite cell broadcasts the trajectory change information of the cell coverage reference point information.
  • the trajectory change information is ⁇ (time 1, position 1); (time 2, position 2); (time 3, position 3); ⁇ .
  • the position information between different cell coverage reference points can be inferred in combination with the ephemeris information.
  • the distance between position 4 and the position of the cell coverage reference point position 5 of the current serving cell is calculated based on the trajectory change information of the cell coverage reference point of the current serving cell, the ephemeris information, and the terminal's position information; when the distance is greater than threshold 1, the measurement report is triggered.
  • the report content may include the terminal location information and the signal quality of the neighboring cells of the current serving cell.
  • the network side sends the conditional switching configuration to the terminal based on the content of the measurement report.
  • the network can predict multiple candidate cells based on the ephemeris information and the location of the terminal, and send configuration information: ⁇ (candidate cell 1, trajectory change information 1); (candidate cell 2, trajectory change information 2); (candidate cell 3, trajectory change information 3) ⁇ .
  • the terminal can access candidate target cells 1, 2, and 3 in sequence according to the configuration information.
  • the execution conditions of this step include: the terminal infers the position change of the cell coverage reference points of the current serving cell and the candidate cell according to the trajectory change information 1, 2, and 3; when the distance between the terminal and the cell coverage reference point of the current serving cell is greater than the threshold 2, and the distance between the terminal and the cell coverage reference point of the candidate cell is less than the threshold value 3, conditional switching is performed to switch to the target cell.
  • the target cell sends resource release messages to the source cell in sequence.
  • the terminal sends a candidate cell replacement request message to the current serving cell.
  • the message may include a wireless measurement report of the neighboring cells of the current serving cell.
  • the network side maintains the conditional switching configuration and updates the counter. Each time a candidate cell change request message is received, the value of the counter is increased by one.
  • the network side only updates the configuration of the candidate cell that should be accessed at the current moment.
  • the network side updates the candidate cell configuration at the current time and the following time.
  • the counter is reset to zero, and the target cell restarts to maintain the counter.
  • Trigger the trajectory information update process For example, as the satellite moves, when the satellite moves to the farthest point of the trajectory change information, Trigger the trajectory information update process.
  • the satellite broadcasts updated trajectory information and updates the valueTag value in the SIB1 message.
  • the track change information in the broadcast message is received again.
  • a conditional handover configuration update mechanism is designed.
  • the configuration is updated, and a conditional handover configuration update counter is introduced to control the number of updated configurations.
  • a location-based cell coverage reference point trajectory information update mechanism is designed to avoid frequent updates of broadcast messages.
  • FIG. 4 a shows a block diagram of some embodiments of a cell switching apparatus according to the present disclosure.
  • the cell switching device 4a on the network side includes: a sending unit 41a, which is used to broadcast the first position change information of the cell coverage reference point of the current service cell within a first preset time period to the terminal, so that the terminal determines whether to trigger the cell switching according to the first position change information, and when the terminal determines that the cell switching is triggered, the relevant information for performing the cell switching is sent to the terminal, so that the terminal performs the cell switching according to the relevant information.
  • a sending unit 41a which is used to broadcast the first position change information of the cell coverage reference point of the current service cell within a first preset time period to the terminal, so that the terminal determines whether to trigger the cell switching according to the first position change information, and when the terminal determines that the cell switching is triggered, the relevant information for performing the cell switching is sent to the terminal, so that the terminal performs the cell switching according to the relevant information.
  • the first location change information is used to instruct the terminal to predict the first real-time location of the cell coverage reference point of the current serving cell based on the first location change information, so that the terminal determines whether to trigger cell switching based on the first real-time location.
  • the first real-time position is used to instruct the terminal to determine a first distance between the terminal and a cell coverage reference point of a current serving cell based on the first real-time position and the terminal's position information, and trigger cell switching when the first distance is greater than a first threshold.
  • the cell switching device 4a on the network side also includes: a prediction unit 42a, which is used to predict candidate cells for cell switching based on the terminal location information returned by the terminal when the terminal determines to trigger cell switching.
  • the relevant information of cell switching includes configuration information of the candidate cells.
  • the cell switching is performed when the first distance is greater than the second threshold and the second distance is less than the third threshold.
  • the prediction unit 42a predicts the candidate cells according to the signal quality of the neighboring cells of the current serving cell returned by the terminal and the location information of the terminal.
  • the configuration information of the candidate cell includes radio resource configuration information.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • the cell switching device 4a on the network side further includes: a receiving unit 43a, configured to receive a resource release message sent by a target cell of the cell switching when the terminal completes the cell switching.
  • the cell switching device 4a on the network side further includes: an updating unit 44a, which is used to update the configuration information of the candidate cell according to the number of times the candidate cell is requested to be replaced when the terminal sends a replacement request information for the candidate cell for cell switching.
  • the candidate cells include the candidate cells at the current moment
  • the update unit updates the configuration information of the candidate cells at the current moment when the number of times requested to be replaced is less than a fourth threshold; when the number of times requested to be replaced is greater than or equal to the fourth threshold, the configuration information of the candidate cells at the current moment and the configuration information of the candidate cells at future moments are updated.
  • the updating unit 44a updates the number of times the candidate cell is requested to be replaced; when the number of times the candidate cell is requested to be replaced is less than a fourth threshold, the sending unit 41a sends the updated number of times the candidate cell is requested to be replaced to the target cell of the cell switching.
  • the updating unit 44a when the number of times the candidate cell is requested to be replaced is greater than or equal to a fourth threshold, the updating unit 44a resets the number of times the candidate cell is requested to be replaced to zero.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the updating unit 44a updates the first position change information to the third position change information; the sending unit 41a sends a prompt message that the first position change information is updated to the terminal, so that the terminal receives the third position change information. Change information.
  • FIG. 4 b shows a block diagram of some other embodiments of the cell switching apparatus of the present disclosure.
  • the cell switching device 4b includes: a determination unit 41b, used to determine whether to trigger cell switching based on the first position change information of the cell coverage reference point of the previous service cell broadcast by the current service cell within the first preset time period; a sending unit 42b, used to return the location information of the terminal to the current service cell when it is determined that the cell switching is triggered; a switching unit 43b, used to perform cell switching according to the relevant information for cell switching sent by the current service cell.
  • the determination unit 41b predicts a first real-time position of a cell coverage reference point of the current serving cell according to the first position change information; and determines whether to trigger cell switching according to the first real-time position.
  • the first location change information includes a plurality of first locations of a cell coverage reference point of a current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.
  • the determination unit 41b determines a first distance between the terminal and a cell coverage reference point of a current serving cell based on the first real-time location and the location information of the terminal; the switching unit 43b triggers a cell switching when the first distance is greater than a first threshold.
  • the cell switching related information includes configuration information of candidate cells for the cell switching, where the candidate cells are predicted based on the location information of the terminal as the current serving cell.
  • the configuration information of the candidate cell includes second position change information of the cell coverage reference point of the candidate cell within a second preset time period, and the switching unit performs cell switching according to the second position change information and the first position change information.
  • the switching unit 43b predicts a first real-time position of a cell coverage reference point of the current serving cell based on the first position change information, determines a first distance between the terminal and the cell coverage reference point of the current serving cell based on the first real-time position and the position information of the terminal, predicts a second real-time position of a cell coverage reference point of a candidate cell based on the second position change information, determines a second distance between the terminal and the cell coverage reference point of the candidate cell based on the second real-time position and the position information of the terminal, and performs cell switching based on the first distance and the second distance.
  • the switching unit 43b performs cell switching when the first distance is greater than the second threshold and the second distance is less than the third threshold.
  • the sending unit 42b when determining to trigger cell switching, the sending unit 42b returns the signal quality of the neighboring cells of the current serving cell to the current serving cell, so as to assist the current serving cell in predicting the candidate cells.
  • the sending unit 42b sends a request for changing the candidate cell for cell switching to the current serving cell.
  • the cell switching device 4b on the serving side further includes a receiving unit 44b, which is used to receive the updated configuration information of the candidate cell sent by the current serving cell, and the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be replaced.
  • the replacement request information includes radio measurement information of neighboring cells of the current serving cell.
  • the candidate cell includes the candidate cell at the current moment
  • the configuration information of the candidate cell is updated through the following steps including: when the number of requested changes is less than a fourth threshold, updating the configuration information of the candidate cell at the current moment; when the number of requested changes is greater than or equal to the fourth threshold, updating the configuration information of the candidate cell at the current moment and the configuration information of the candidate cell at the future moment.
  • the receiving unit 44b when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, the receiving unit 44b receives a prompt message sent by the current service cell that the first position change information is updated, the first position change information is updated to the third position change information, and the third position change information is received according to the prompt message.
  • FIG5 shows a block diagram of some embodiments of the electronic device of the present disclosure.
  • the electronic device 5 of this embodiment includes: a memory 51 and a processor 52 coupled to the memory 51, and the processor 52 is configured to execute the cell switching method on the network side or the cell switching method on the terminal side in any embodiment of the present disclosure based on the instructions stored in the memory 51.
  • the memory 51 may include, for example, a system memory, a fixed non-volatile storage medium, etc.
  • the system memory may store, for example, an operating system, an application program, a boot loader, a database, and other programs.
  • FIG. 6 is a block diagram showing some other embodiments of the electronic device of the present disclosure.
  • the electronic device 6 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, and the processor 620 is configured to execute the cell switching method on the network side or the cell switching method on the terminal side in any one of the aforementioned embodiments based on instructions stored in the memory 610.
  • the memory 610 may include, for example, a system memory, a fixed non-volatile storage medium, etc.
  • the system memory may store, for example, an operating system, an application program, a boot loader, and other programs.
  • the cell switching system 7 includes: a first cell switching device 71 for executing the cell switching method on the terminal side in any of the above embodiments; and a second cell switching device 72 for executing the cell switching method on the network side in any of the above embodiments.
  • the method and system of the present disclosure may be implemented in many ways.
  • the method and system of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware.
  • the above order of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above, unless otherwise specifically stated.
  • the present disclosure may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present disclosure. Therefore, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

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Abstract

本公开涉及一种小区切换方法、装置、系统和电子设备，涉及通信技术领域。该小区切换方法，包括：向终端广播当前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，以便终端根据第一位置变化信息确定是否触发小区切换；在终端确定触发小区切换的情况下，向终端发送进行小区切换的相关信息，以便终端根据相关信息进行小区切换。

Description

小区切换方法、装置、系统和电子设备
相关申请的交叉引用
本申请是以CN申请号为202310808439.6，申请日为2023年7月3日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及通信技术领域，特别涉及一种小区切换方法、小区切换装置、小区切换系统、电子设备和非易失性计算机可读存储介质。
背景技术
低轨卫星NTN(Non-Terrestrial Network，非地面网络)网络中存在两种波束类型：准地面固定波束和地面移动波束。由于地面移动波束的小区覆盖范围随着卫星移动而实时变化，其覆盖状态变化率更高。
在相关技术中，NR(New Radio，新空口)Rel-17(Release-17，第17版)NTN项目对于准地面固定波束小区，支持在各时刻广播其小区覆盖参考点的实时位置，以支持基于位置的条件切换。
发明内容
根据本公开的一些实施例，提供了一种网络侧的小区切换方法，包括：向终端广播当前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，以便终端根据第一位置变化信息确定是否触发小区切换；在终端确定触发小区切换的情况下，向终端发送进行小区切换的相关信息，以便终端根据相关信息进行小区切换。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置确定是否触发小区切换。
在一些实施例中，第一实时位置用于指示终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离，并在第一距离大于第一阈值的情况下触发小区切换。
在一些实施例中，网络侧的小区切换方法还包括：在终端确定触发小区切换的情 况下，根据终端返回的终端的位置信息，预测小区切换的候选小区，小区切换的相关信息包括候选小区的配置信息。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，以便终端根据第二位置变化信息和第一位置变化信息进行小区切换。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；第二位置变化信息用于指示终端根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置，以便终端根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离，并根据第一距离和第二距离进行小区切换。
在一些实施例中，小区切换在第一距离大于第二阈值，且第二距离小于第三阈值的情况下进行。
在一些实施例中，预测小区切换的候选小区包括：根据终端返回的当前服务小区的相邻小区的信号质量和终端的位置信息，预测候选小区。
在一些实施例中，候选小区的配置信息包括无线资源配置信息。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，网络侧的小区切换方法还包括：在终端完成了小区切换的情况下，接收小区切换的目标小区发送的资源释放消息。
在一些实施例中，网络侧的小区切换方法还包括：在终端发来针对小区切换的候选小区的更换请求信息的情况下，根据候选小区被请求更换的次数，更新候选小区的配置信息。
在一些实施例中，候选小区包括当前时刻的候选小区，更新候选小区的配置信息包括：在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，网络侧的小区切换方法还包括：在终端发来更换请求信息的情况下，对候选小区被请求更换的次数进行更新；在被请求更换的次数小于第四阈值的情况下，将更新后的候选小区被请求更换的次数发送给小区切换的目标小区。
在一些实施例中，网络侧的小区切换方法还包括：在被请求更换的次数大于或等于第四阈值的情况下，将候选小区被请求更换的次数归零。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，网络侧的小区切换方法还包括：在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，将第一位置变化信息更新为第三位置变化信息；向终端发送第一位置变化信息被更新的提示信息，以便终端接收第三位置变化信息。
根据本公开的另一些实施例，提供一种终端侧的小区切换方法，包括：根据当前服务小区广播当的前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，确定是否触发小区切换；在确定触发小区切换的情况下，向当前服务小区返回终端的位置信息；根据当前服务小区发送的进行小区切换的相关信息，进行小区切换。
在一些实施例中，确定是否触发小区切换包括：根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置；根据第一实时位置，确定是否触发小区切换。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，确定是否触发小区切换包括：根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；在第一距离大于第一阈值的情况下，触发小区切换。
在一些实施例中，小区切换的相关信息包括小区切换的候选小区的配置信息，候选小区为当前服务小区根据终端的位置信息预测。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，进行小区切换包括：根据第二位置变化信息和第一位置变化信息，进行小区切换。
在一些实施例中，进行小区切换包括：根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置；根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置；根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离；根据第一距离和第二距离，进行小区 切换。
在一些实施例中，进行小区切换包括：在第一距离大于第二阈值，且第二距离小于第三阈值的情况下，进行小区切换。
在一些实施例中，终端侧的小区切换方法还包括：在确定触发小区切换的情况下，向当前服务小区返回当前服务小区的相邻小区的信号质量，用于辅助当前服务小区预测候选小区。
在一些实施例中，终端侧的小区切换方法还包括：在小区切换的候选小区的信道质量无法满足预设条件的情况下，向当前服务小区发送针对小区切换的候选小区的更换请求信息；接收当前服务小区发送的更新后的候选小区的配置信息，候选小区的配置信息根据候选小区被请求更换的次数更新。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，候选小区包括当前时刻的候选小区，候选小区的配置信息通过下面的步骤进行更新包括：在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，终端侧的小区切换方法还包括：在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，接收当前服务小区发送的第一位置变化信息被更新的提示信息，第一位置变化信息被更新为第三位置变化信息；根据提示信息，接收第三位置变化信息。
根据本公开的又一些实施例，提供一种网络侧的小区切换装置，包括：发送单元，用于向终端广播当前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，以便终端根据第一位置变化信息确定是否触发小区切换，在终端确定触发小区切换的情况下，向终端发送进行小区切换的相关信息，以便终端根据相关信息进行小区切换。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置确定是否触发小区切换。
在一些实施例中，第一实时位置用于指示终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离，并在第一距离大于第一阈值的情况下触发小区切换。
在一些实施例中，网络侧的小区切换装置还包括：预测单元，用于在终端确定触发小区切换的情况下，根据终端返回的终端的位置信息，预测小区切换的候选小区，小区切换的相关信息包括候选小区的配置信息。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，以便终端根据第二位置变化信息和第一位置变化信息进行小区切换。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；第二位置变化信息用于指示终端根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置，以便终端根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离，并根据第一距离和第二距离进行小区切换。
在一些实施例中，小区切换在第一距离大于第二阈值，且第二距离小于第三阈值的情况下进行。
在一些实施例中，预测单元根据终端返回的当前服务小区的相邻小区的信号质量和终端的位置信息，预测候选小区。
在一些实施例中，候选小区的配置信息包括无线资源配置信息。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，网络侧的小区切换装置还包括：接收单元，用于在终端完成了小区切换的情况下，接收小区切换的目标小区发送的资源释放消息。
在一些实施例中，网络侧的小区切换装置还包括：更新单元，用于在终端发来针对小区切换的候选小区的更换请求信息的情况下，根据候选小区被请求更换的次数，更新候选小区的配置信息。
在一些实施例中，候选小区包括当前时刻的候选小区，更新单元在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，更新单元在终端发来更换请求信息的情况下，对候选小区被请求更换的次数进行更新；发送单元在被请求更换的次数小于第四阈值的情况下，将更 新后的候选小区被请求更换的次数发送给小区切换的目标小区。
在一些实施例中，更新单元在被请求更换的次数大于或等于第四阈值的情况下，将候选小区被请求更换的次数归零。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，更新单元在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，将第一位置变化信息更新为第三位置变化信息；发送单元向终端发送第一位置变化信息被更新的提示信息，以便终端接收第三位置变化信息。
根据本公开的再一些实施例，提供一种终端侧的小区切换装置，包括：确定单元，用于根据当前服务小区广播当的前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，确定是否触发小区切换；发送单元，用于在确定触发小区切换的情况下，向当前服务小区返回终端的位置信息；切换单元，用于根据当前服务小区发送的进行小区切换的相关信息，进行小区切换。
在一些实施例中，确定单元根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置；根据第一实时位置，确定是否触发小区切换。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，确定单元根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；切换单元在第一距离大于第一阈值的情况下，触发小区切换。
在一些实施例中，小区切换的相关信息包括小区切换的候选小区的配置信息，候选小区为当前服务小区根据终端的位置信息预测。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，切换单元根据第二位置变化信息和第一位置变化信息，进行小区切换。
在一些实施例中，切换单元根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离，根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置，根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离，根据第一距离和第二距离，进行小区切换。
在一些实施例中，切换单元在第一距离大于第二阈值，且第二距离小于第三阈值 的情况下，进行小区切换。
在一些实施例中，发送单元在确定触发小区切换的情况下，向当前服务小区返回当前服务小区的相邻小区的信号质量，用于辅助当前服务小区预测候选小区。
在一些实施例中，发送单元在小区切换的候选小区的信道质量无法满足预设条件的情况下，向当前服务小区发送针对小区切换的候选小区的更换请求信息。终端侧的小区切换装置还包括接收单元，用于接收当前服务小区发送的更新后的候选小区的配置信息，候选小区的配置信息根据候选小区被请求更换的次数更新。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，候选小区包括当前时刻的候选小区，候选小区的配置信息通过下面的步骤进行更新包括：在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，接收单元在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，接收当前服务小区发送的第一位置变化信息被更新的提示信息，第一位置变化信息被更新为第三位置变化信息，根据提示信息，接收第三位置变化信息。
根据本公开的再一些实施例，提供一种小区切换系统，包括：第一小区切换装置，用于执行上述任一个实施例中的终端侧的小区切换方法；第二小区切换装置，用于执行上述任一个实施例中的网络侧的小区切换方法。
根据本公开的再一些实施例，提供一种电子设备，包括：存储器；和耦接至存储器的处理器，处理器被配置为基于存储在存储器装置中的指令，执行上述任一个实施例中网络侧的小区切换方法或终端侧的小区切换方法。
根据本公开的再一些实施例，提供一种非易失性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述任一个实施例中网络侧的小区切换方法或终端侧的小区切换方法。
根据本公开的再一些实施例，提供一种计算机程序，包括：指令，指令当由处理器执行时使处理器执行上述任一个实施例中网络侧的小区切换方法或终端侧的小区切换方法。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开：
图1示出本公开的小区切换方法的一些实施例的流程图；
图2a示出本公开的地面移动波束卫星小区的一些实施例的示意图；
图2b示出本公开的小区切换方法的一些实施例的信令图；
图2c示出本公开的小区切换方法的另一些实施例的流程图；
图2d示出本公开的小区切换方法的又一些实施例的流程图；
图3示出本公开的小区切换方法的再一些实施例的流程图；
图4a示出本公开的小区切换装置的一些实施例的框图；
图4b示出本公开的小区切换装置的另一些实施例的框图；
图5示出本公开的电子设备的一些实施例的框图；
图6示出本公开的电子设备的另一些实施例的框图；
图7示出本公开的小区切换系统的一些实施例的框图。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。
同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本公开的发明人发现上述相关技术中存在如下问题：对于参考点位置不固定的情 况，会引入较大的广播消息更新开销，从而导致通信性能下降。
鉴于此，本公开提出了一种小区切换技术方案，能够避免引入较大的广播消息更新开销。
如前所述，在准地面固定波束小区的广播消息中加入小区覆盖参考点信息，能够支持基于位置的准地面固定波束条件切换。但是，对于地面移动波束，由于小区覆盖参考点位置不固定，如果广播小区覆盖参考点实时位置信息，会引入较大的广播消息更新开销。因此，上述方式不支持基于位置信息的地面移动波束条件切换。
针对上述技术问题，本公开根据地面移动波束卫星小区特点，能够使终端基于网络侧广播消息，对小区覆盖参考点的变化进行预测；使得终端能够得到小区覆盖参考点的实时位置，进而基于位置信息触发条件切换。这样，能够提高地面移动波束卫星小区切换的准确性和鲁棒性。
例如，可以通过下面的实施例，实现本公开的技术方案。
图1示出本公开的小区切换方法的一些实施例的流程图。
如图1所示，在步骤110中，向终端广播当前服务小区的小区覆盖参考点(Reference point)在第一预设时间段内的第一位置变化信息，以便终端根据第一位置变化信息确定是否触发小区切换。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
例如，第一位置变化信息为轨迹(Trajectory)变化信息，当前服务小区为地面移动波束卫星小区。地面移动波束卫星小区，广播其小区覆盖参考点的轨迹变化信息。轨迹变化信息可以包括小区覆盖参考点位置及其与时间的对应关系列表。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置确定是否触发小区切换。
例如，第一实时位置用于指示终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离，并在第一距离大于第一阈值的情况下触发小区切换。
例如，终端根据小区覆盖参考点的轨迹变化信息、当前服务小区对应的星历信息、终端的位置信息，对终端与当前服务小区的小区覆盖参考点的距离进行计算；在该距离大于第一阈值的情况下，触发向当前服务小区进行测量上报的流程。
例如，测量上报的内容可以包括终端的位置信息和当前服务小区的相邻小区的信号质量。
在步骤120中，在终端确定触发小区切换的情况下，向终端发送进行小区切换的相关信息，以便终端根据相关信息进行小区切换。
在上述实施例中，网络侧广播小区覆盖参考点的轨迹变化信息，使得终端能够基于此信息，决定是否触发小区切换。这样，不但能够在避免引入较大的广播消息更新开销的情况下实现小区切换，而且能够提高小区切换的准确性和鲁棒性，从而提高通信性能。
在一些实施例中，在终端确定触发小区切换的情况下，根据终端返回的终端的位置信息，预测小区切换的候选小区，小区切换的相关信息包括候选小区的配置信息。
例如，网络侧(如当前服务小区)根据测量上报的内容，将条件切换配置(如进行小区切换的相关信息)下发给终端。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，以便终端根据第二位置变化信息和第一位置变化信息进行小区切换。
例如，网络侧可以根据星历信息和终端的位置信息，预测多个候选小区，并下发条件切换配置。条件切换配置可以包括无线资源配置信息和候选小区的轨迹变化信息(如候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息)。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离。
在一些实施例中，第二位置变化信息用于指示终端根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置，以便终端根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离，并根据第一距离和第二距离进行小区切换。
例如，小区切换在第一距离大于第二阈值，且第二距离小于第三阈值的情况下进行。
例如，在存在多个候选小区的情况下，终端根据条件切换配置，依次接入候选小区。该步骤的执行条件可以包括：终端根据轨迹变化信息，预测当前服务小区和候选小区的小区覆盖参考点的位置随时间的变化(如当前时刻下，当前服务小区的小区覆 盖参考点的实时位置和候选小区的小区覆盖参考点的实时位置)；在终端与当前服务小区的小区覆盖参考点的距离大于第二阈值，且终端与候选小区的小区覆盖参考点的距离小于第三阈值的情况下，执行条件切换，将终端切换至目标小区(如该候选小区)。
在一些实施例中，候选小区的配置信息包括无线资源配置信息。
在一些实施例中，根据终端返回的当前服务小区的相邻小区的信号质量和终端的位置信息，预测候选小区。
在一些实施例中，在终端完成了小区切换的情况下，接收小区切换的目标小区发送的资源释放消息。
例如，在终端进行多次切换，即包含多个目标小区的情况下，目标小区依次发送资源释放消息给小区切换的源小区。
在一些实施例中，在终端发来针对小区切换的候选小区的更换请求信息的情况下，根据候选小区被请求更换的次数，更新候选小区的配置信息。例如，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
例如，针对某候选小区，在其信道质量要求无法满足条件切换的执行要求的情况下，终端发送针对该候选小区的更换请求消息给当前服务小区。更换请求消息可以包含当前服务小区的相邻小区进行的无线测量报告；网络侧维护条件切换配置，更新该候选小区的计数器，每收到一次该候选小区的更换请求消息，该计数器的值加一。
在一些实施例中，候选小区包括当前时刻的候选小区。在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，在终端发来更换请求信息的情况下，对候选小区被请求更换的次数进行更新；在被请求更换的次数小于第四阈值的情况下，将更新后的候选小区被请求更换的次数发送给小区切换的目标小区。
例如，在计数器数值小于第四阈值的情况下，网络侧仅对当前时刻应该接入的候选小区的配置进行更新；在计数器数值大于或等于第四阈值的情况下，网络侧对当前时刻及以后时候的候选小区的配置进行更新。
在一些实施例中，在被请求更换的次数大于或等于第四阈值的情况下，将候选小区被请求更换的次数归零。
例如，在仅对当前时刻接入的候选小区的配置进行更新的情况下，该候选小区的 计数器的值随着小区切换，传递到目标小区；在对当前时刻及以后时刻的候选小区配置进行更新的情况下，将该候选小区的计数器归零，目标小区重新开始对该计数器进行维护。
在一些实施例中，在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，将第一位置变化信息更新为第三位置变化信息；向终端发送第一位置变化信息被更新的提示信息，以便终端接收第三位置变化信息。
例如，地面移动波束卫星小区，广播其小区覆盖参考点信息的轨迹变化信息；在地面移动波束卫星小区对应的卫星移动至轨迹变化信息的最远点位置的情况下，触发轨迹变化信息更新流程；该卫星广播更新的轨迹变化信息，并在SIB1(System Information Block，系统信息块)消息中对valueTag值进行更新，更新后的valueTag值用于指示终端，轨迹变化信息被更新，需要重新接收；在终端接收到广播消息中valueTag值发生变化的情况下，重新接收广播消息中的更新后的轨迹变化信息。
图2a示出本公开的地面移动波束卫星小区的一些实施例的示意图。
如图2a所示，卫星A和卫星B分别对应不同的地面移动波束卫星小区。终端位于两个地面移动波束卫星小区的重叠区域，即切换区域。
地面移动波束卫星小区的覆盖范围一直随着卫星的移动而变化。如果实时广播小区覆盖参考点信息，会引入较大的广播消息更新开销。因此，需要网络侧提供相关辅助信息，使得终端能够对小区覆盖参考点位置进行准确推测，进而基于位置信息实现精准的条件切换。
在一些实施例中，可以由网络侧广播小区覆盖参考点的轨迹变化信息，终端基于此信息，对小区覆盖参考点的实时位置进行推断，并触发条件切换。这样，能够提高地面移动波束卫星小区切换的准确性和鲁棒性。
例如，首先，网络侧广播小区覆盖参考点的轨迹变化信息，指示在一段时间内小区覆盖参考点随时间的变化情况；其次，终端根据广播消息预测出的小区覆盖参考点的实时位置，判断其是否处在小区边缘，进而确定是否触发测量上报；然后，网络侧基于终端上报的终端位置，预测多个候选目标小区，在条件切换配置中，将候选小区的小区覆盖参考点的轨迹变化信息下发给终端；最后，终端基于该信息，预测候选小区的小区覆盖参考点的位置变化，自主触发执行条件切换。
图2b示出本公开的小区切换方法的一些实施例的信令图。
如图2b所示，在事件210b中，地面移动波束卫星小区(即当前的服务卫星)， 广播其小区覆盖参考点的轨迹变化信息。轨迹变化信息可以包括小区覆盖参考点位置及其与时间的对应关系列表。
在事件220b中，终端根据小区覆盖参考点的轨迹变化信息、当前服务小区对应的星历信息、终端的位置信息，对终端与当前服务小区的小区覆盖参考点的距离进行计算；在该距离大于第一阈值(门限1)的情况下，触发向当前服务小区进行测量上报的流程。
在事件230b中，终端向服务卫星进行测量上报。例如，测量上报的内容可以包括终端的位置信息和当前服务小区的相邻小区的信号质量。
在事件240b中，服务卫星可以根据星历信息和终端的位置信息，预测多个候选小区。
在事件250b中，服务卫星向候选小区1对应的候选卫星1和候选小区2对应的候选卫星2发送切换请求，并接收候选卫星1和候选卫星2的切换响应。
在步骤260b中，服务卫星下发条件切换配置。条件切换配置可以包括无线资源配置信息和候选小区的轨迹变化信息。
在步骤270b中，终端根据条件切换配置，依次接入候选小区。该步骤的执行条件可以包括：终端根据轨迹变化信息，预测当前服务小区和候选小区的小区覆盖参考点的位置随时间的变化；在终端与当前服务小区的小区覆盖参考点的距离大于第二阈值(门限2)，且终端与候选小区的小区覆盖参考点的距离小于第三阈值(门限3)的情况下，执行条件切换，将终端切换至目标小区。
在步骤280b中，在终端位于位置L1的情况下，终端与服务卫星的小区覆盖参考点的距离大于第二阈值，且终端与候选卫星1的小区覆盖参考点的距离小于第三阈值，将终端切换至候选卫星1的小区。
在终端位于位置L2的情况下，终端与服务卫星的小区覆盖参考点的距离大于第二阈值，且终端与候选卫星2的小区覆盖参考点的距离小于第三阈值，将终端切换至候选卫星2的小区。
这样，终端能够自主切换，无需频繁的测量上报和配置，从而提高了小区切换的效率和通信性能。
图2c示出本公开的小区切换方法的另一些实施例的流程图。
如图2c所示，在步骤210c中，终端确定某候选小区的信道质量无法满足条件切换的执行要求。
在步骤220c中，终端发送针对该候选小区的更换请求消息给当前服务小区。更换请求消息可以包含当前服务小区的相邻小区进行的无线测量报告。
在步骤230c中，网络侧维护条件切换配置，更新该候选小区的计数器，每收到一次该候选小区的更换请求消息，该计数器的值加一。
在步骤240c中，判断计数器的值是否大于或等于第四阈值(即门限4)。在大于的情况下，执行步骤250c；在小于的情况下执行步骤270c。
在步骤250c中，网络侧对当前时刻及以后时候的候选小区的配置进行更新。
在步骤260c中，将该候选小区的计数器归零，目标小区重新开始对该计数器进行维护。
在步骤270c中，网络侧仅对当前时刻应该接入的候选小区的配置进行更新。
在步骤289c中，该候选小区的计数器的值随着小区切换，传递到目标小区
图2d示出本公开的小区切换方法的又一些实施例的流程图。
如图2d所示，在步骤210d中，地面移动波束卫星小区，广播其小区覆盖参考点信息的轨迹变化信息。
在步骤220d中，判断地面移动波束卫星小区对应的卫星是否移动到轨迹变化信息的最远点位置。在是的情况下，执行步骤230d；在不是的情况下，重复执行步骤210d。
在步骤230d中，触发轨迹变化信息更新流程；该卫星广播更新的轨迹变化信息，并在SIB1消息中对valueTag值进行更新。
在步骤240d中，在终端接收到广播消息中valueTag值发生变化的情况下，重新接收广播消息中的更新后的轨迹变化信息。
图3示出本公开的小区切换方法的再一些实施例的流程图。
如图3所示，在步骤310中，根据当前服务小区广播当的前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，确定是否触发小区切换。
在步骤320中，在确定触发小区切换的情况下，向当前服务小区返回终端的位置信息。
在步骤330中，根据当前服务小区发送的进行小区切换的相关信息，进行小区切换。
在一些实施例中，根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置；根据第一实时位置，确定是否触发小区切换。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一 预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；在第一距离大于第一阈值的情况下，触发小区切换。
在一些实施例中，小区切换的相关信息包括小区切换的候选小区的配置信息，候选小区为当前服务小区根据终端的位置信息预测。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息。根据第二位置变化信息和第一位置变化信息，进行小区切换。
在一些实施例中，根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置；根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置；根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离；根据第一距离和第二距离，进行小区切换。
在一些实施例中，在第一距离大于第二阈值，且第二距离小于第三阈值的情况下，进行小区切换。
在一些实施例中，在确定触发小区切换的情况下，向当前服务小区返回当前服务小区的相邻小区的信号质量，用于辅助当前服务小区预测候选小区。
在一些实施例中，在小区切换的候选小区的信道质量无法满足预设条件的情况下，向当前服务小区发送针对小区切换的候选小区的更换请求信息；接收当前服务小区发送的更新后的候选小区的配置信息，候选小区的配置信息根据候选小区被请求更换的次数更新。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，候选小区包括当前时刻的候选小区，候选小区的配置信息通过下面的步骤进行更新包括：在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，接收当前服务小区发送的第一位置变化信息被更新的提示信息，第一位置变化信息被更新为第三位置变化信息；根据提示信息，接收第三位置变化信息。
例如，地面移动波束卫星小区，广播小区覆盖参考点信息的轨迹变化信息。轨迹变化信息为{(时刻1，位置1)；(时刻2，位置2)；(时刻3，位置3)；}。在不同的小区覆盖参考点之间的位置信息可以结合星历信息进行推测。
例如，终端处于位置4，根据当前服务小区的小区覆盖参考点的轨迹变化信息、星历信息、终端的位置信息，对位置4和当前服务小区的小区覆盖参考点位置5的位置之间的距离进行计算；在该距离大于门限1的情况下，触发测量上报。上报内容可以包括终端位置信息和当前服务小区的相邻小区的信号质量。
例如，网络侧根据测量上报的内容，将条件切换配置下发给终端。网络可以根据星历信息和终端的位置，预测多个候选小区，并下发配置信息：{(候选小区1，轨迹变化信息1)；(候选小区2，轨迹变化信息2)；(候选小区3，轨迹变化信息3)}。
例如，终端可以根据配置信息，依次接入候选目标小区1、2和3。该步骤的执行条件包括：终端根据轨迹变化信息1、2和3，推测当前服务小区和候选小区的小区覆盖参考点的位置变化情况；在终端与当前服务小区的小区覆盖参考点的距离大于门限2，且终端与候选小区的小区覆盖参考点的距离小于门限值3的情况下，执行条件切换，切换至目标小区。
例如，目标小区依次发送资源释放消息给源小区。
例如，在执行切换的过程中，在候选小区的信道质量无法满足条件切换执行要求的情况下，终端发送候选小区的更换请求消息给当前服务小区。该消息可以包含对当前服务小区的相邻小区进行的无线测量报告。
例如，网络侧维护条件切换配置，更新计数器。每收到一次候选小区的更换请求消息，则其计数器的值加一。
例如，在计数器数值小于门限值4的情况下，网络侧仅对当前时刻应该接入的候选小区配置进行更新。
例如，在计数器数值大于或等于门限值4的情况下，网络侧对当前时刻及以后时刻的候选小区配置进行更新。
例如，在仅对当前时刻接入的候选小区配置进行更新的情况下，计数器的值随着切换传递到目标小区。
例如，在对当前时刻及以后时刻的候选小区配置进行更新的情况下，计数器归零，目标小区重新开始对计数器进行维护。
例如，随着卫星的移动，在该卫星移动至轨迹变化信息的最远点位置的情况下， 触发轨迹信息更新流程。
例如，卫星广播更新的轨迹信息，并在SIB1消息中对valueTag值进行更新。
例如，在终端接收到的广播消息中valueTag值发生了变化的情况下，重新接收广播消息中的轨迹变化信息。
在上述实施例中，通过网络侧广播小区覆盖参考点轨迹变化信息，辅助终端对地面移动波束卫星小区的实时位置进行预测。网络侧基于位置信息，预测多个候选小区，并将候选小区的轨迹信息添加到条件配置中。终端可基于位置信息依次触发多个条件切换，避免了终端和网络的频繁交互。
在上述实施例中，设计了条件切换配置更新机制。在无线信道无法满足条件切换执行的情况下，对配置进行更新，并且引入条件切换配置更新计数器，通过计数器来控制更新配置的数量。设计了基于位置的小区覆盖参考点轨迹信息更新机制，避免了广播消息的频繁更新。
图4a示出本公开的小区切换装置的一些实施例的框图。
如图4a所示，网络侧的小区切换装置4a包括：发送单元41a，用于向终端广播当前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，以便终端根据第一位置变化信息确定是否触发小区切换，在终端确定触发小区切换的情况下，向终端发送进行小区切换的相关信息，以便终端根据相关信息进行小区切换。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置确定是否触发小区切换。
在一些实施例中，第一实时位置用于指示终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离，并在第一距离大于第一阈值的情况下触发小区切换。
在一些实施例中，网络侧的小区切换装置4a还包括：预测单元42a，用于在终端确定触发小区切换的情况下，根据终端返回的终端的位置信息，预测小区切换的候选小区，小区切换的相关信息包括候选小区的配置信息。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，以便终端根据第二位置变化信息和第一位置变化信息进行小区切换。
在一些实施例中，第一位置变化信息用于指示终端根据第一位置变化信息，预测 当前服务小区的小区覆盖参考点的第一实时位置，以便终端根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；第二位置变化信息用于指示终端根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置，以便终端根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离，并根据第一距离和第二距离进行小区切换。
在一些实施例中，小区切换在第一距离大于第二阈值，且第二距离小于第三阈值的情况下进行。
在一些实施例中，预测单元42a根据终端返回的当前服务小区的相邻小区的信号质量和终端的位置信息，预测候选小区。
在一些实施例中，候选小区的配置信息包括无线资源配置信息。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，网络侧的小区切换装置4a还包括：接收单元43a，用于在终端完成了小区切换的情况下，接收小区切换的目标小区发送的资源释放消息。
在一些实施例中，网络侧的小区切换装置4a还包括：更新单元44a，用于在终端发来针对小区切换的候选小区的更换请求信息的情况下，根据候选小区被请求更换的次数，更新候选小区的配置信息。
在一些实施例中，候选小区包括当前时刻的候选小区，更新单元在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，更新单元44a在终端发来更换请求信息的情况下，对候选小区被请求更换的次数进行更新；发送单元41a在被请求更换的次数小于第四阈值的情况下，将更新后的候选小区被请求更换的次数发送给小区切换的目标小区。
在一些实施例中，更新单元44a在被请求更换的次数大于或等于第四阈值的情况下，将候选小区被请求更换的次数归零。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，更新单元44a在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，将第一位置变化信息更新为第三位置变化信息；发送单元41a向终端发送第一位置变化信息被更新的提示信息，以便终端接收第三位置 变化信息。
图4b示出本公开的小区切换装置的另一些实施例的框图。
如图4b所示，小区切换装置4b包括：确定单元41b，用于根据当前服务小区广播当的前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，确定是否触发小区切换；发送单元42b，用于在确定触发小区切换的情况下，向当前服务小区返回终端的位置信息；切换单元43b，用于根据当前服务小区发送的进行小区切换的相关信息，进行小区切换。
在一些实施例中，确定单元41b根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置；根据第一实时位置，确定是否触发小区切换。
在一些实施例中，第一位置变化信息包括当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及多个第一位置中的每一个对应的时间信息。
在一些实施例中，确定单元41b根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离；切换单元在43b第一距离大于第一阈值的情况下，触发小区切换。
在一些实施例中，小区切换的相关信息包括小区切换的候选小区的配置信息，候选小区为当前服务小区根据终端的位置信息预测。
在一些实施例中，候选小区的配置信息包括候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，切换单元根据第二位置变化信息和第一位置变化信息，进行小区切换。
在一些实施例中，切换单元43b根据第一位置变化信息，预测当前服务小区的小区覆盖参考点的第一实时位置，根据第一实时位置和终端的位置信息，确定终端与当前服务小区的小区覆盖参考点的第一距离，根据第二位置变化信息，预测候选小区的小区覆盖参考点的第二实时位置，根据第二实时位置和终端的位置信息，确定终端与候选小区的小区覆盖参考点的第二距离，根据第一距离和第二距离，进行小区切换。
在一些实施例中，切换单元43b在第一距离大于第二阈值，且第二距离小于第三阈值的情况下，进行小区切换。
在一些实施例中，发送单元42b在确定触发小区切换的情况下，向当前服务小区返回当前服务小区的相邻小区的信号质量，用于辅助当前服务小区预测候选小区。
在一些实施例中，发送单元42b在小区切换的候选小区的信道质量无法满足预设条件的情况下，向当前服务小区发送针对小区切换的候选小区的更换请求信息。终端 侧的小区切换装置4b还包括接收单元44b，用于接收当前服务小区发送的更新后的候选小区的配置信息，候选小区的配置信息根据候选小区被请求更换的次数更新。
在一些实施例中，更换请求信息包括当前服务小区的相邻小区的无线测量信息。
在一些实施例中，候选小区包括当前时刻的候选小区，候选小区的配置信息通过下面的步骤进行更新包括：在被请求更换的次数小于第四阈值的情况下，对当前时刻的候选小区的配置信息进行更新；在被请求更换的次数大于或等于第四阈值的情况下，对当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
在一些实施例中，接收单元44b在当前服务小区对应的卫星移动到第一位置变化信息对应的最远点位置的情况下，接收当前服务小区发送的第一位置变化信息被更新的提示信息，第一位置变化信息被更新为第三位置变化信息，根据提示信息，接收第三位置变化信息。
图5示出本公开的电子设备的一些实施例的框图。
如图5所示，该实施例的电子设备5包括：存储器51以及耦接至该存储器51的处理器52，处理器52被配置为基于存储在存储器51中的指令，执行本公开中任意一个实施例中网络侧的小区切换方法或终端侧的小区切换方法。
其中，存储器51例如可以包括系统存储器、固定非易失性存储介质等。系统存储器例如存储有操作系统、应用程序、引导装载程序Boot Loader、数据库以及其他程序等。
图6示出本公开的电子设备的另一些实施例的框图。
如图6所示，该实施例的电子设备6包括：存储器610以及耦接至该存储器610的处理器620，处理器620被配置为基于存储在存储器610中的指令，执行前述任意一个实施例中网络侧的小区切换方法或终端侧的小区切换方法。
存储器610例如可以包括系统存储器、固定非易失性存储介质等。系统存储器例如存储有操作系统、应用程序、引导装载程序Boot Loader以及其他程序等。
电子设备6还可以包括输入输出接口630、网络接口640、存储接口650等。这些接口630、640、650以及存储器610和处理器620之间例如可以通过总线660连接。其中，输入输出接口630为显示器、鼠标、键盘、触摸屏、麦克、音箱等输入输出设备提供连接接口。网络接口640为各种联网设备提供连接接口。存储接口650为SD卡、U盘等外置存储设备提供连接接口。
本领域内的技术人员应当明白，本公开的实施例可提供为方法、系统、或计算机 程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用非瞬时性存储介质包括但不限于磁盘存储器、CD-ROM、光学存储器等上实施的计算机程序产品的形式。
图7示出本公开的小区切换系统的一些实施例的框图。
如图7所示，小区切换系统7包括：第一小区切换装置71，用于执行上述任一个实施例中的终端侧的小区切换方法；第二小区切换装置72，用于执行上述任一个实施例中的网络侧的小区切换方法。
至此，已经详细描述了根据本公开的小区切换方法、小区切换装置、小区切换系统、电子设备和非易失性计算机可读存储介质。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。
可能以许多方式来实现本公开的方法和系统。例如，可通过软件、硬件、固件或者软件、硬件、固件的任何组合来实现本公开的方法和系统。用于方法的步骤的上述顺序仅是为了进行说明，本公开的方法的步骤不限于以上具体描述的顺序，除非以其它方式特别说明。此外，在一些实施例中，还可将本公开实施为记录在记录介质中的程序，这些程序包括用于实现根据本公开的方法的机器可读指令。因而，本公开还覆盖存储用于执行根据本公开的方法的程序的记录介质。
虽然已经通过示例对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改。本公开的范围由所附权利要求来限定。

Claims (34)

  1. 一种小区切换方法，包括：
    向终端广播当前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，以便所述终端根据所述第一位置变化信息确定是否触发小区切换；
    在所述终端确定触发所述小区切换的情况下，向所述终端发送进行所述小区切换的相关信息，以便所述终端根据所述相关信息进行所述小区切换。
  2. 根据权利要求1所述的小区切换方法，其中，所述第一位置变化信息用于指示所述终端根据所述第一位置变化信息，预测所述当前服务小区的小区覆盖参考点的第一实时位置，以便所述终端根据所述第一实时位置确定是否触发所述小区切换。
  3. 根据权利要求2所述的小区切换方法，其中，所述第一实时位置用于指示所述终端根据所述第一实时位置和所述终端的位置信息，确定所述终端与所述当前服务小区的小区覆盖参考点的第一距离，并在所述第一距离大于第一阈值的情况下触发所述小区切换。
  4. 根据权利要求1-3任一项所述的小区切换方法，还包括：
    在所述终端确定触发所述小区切换的情况下，根据所述终端返回的所述终端的位置信息，预测所述小区切换的候选小区，所述小区切换的相关信息包括所述候选小区的配置信息。
  5. 根据权利要求4所述的小区切换方法，其中，所述候选小区的配置信息包括所述候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，以便所述终端根据所述第二位置变化信息和所述第一位置变化信息进行所述小区切换。
  6. 根据权利要求5所述的小区切换方法，其中：
    所述第一位置变化信息用于指示所述终端根据所述第一位置变化信息，预测所述当前服务小区的小区覆盖参考点的第一实时位置，以便所述终端根据第一实时位置和所述终端的位置信息，确定所述终端与所述当前服务小区的小区覆盖参考点的第一距 离；
    所述第二位置变化信息用于指示所述终端根据所述第二位置变化信息，预测所述候选小区的小区覆盖参考点的第二实时位置，以便所述终端根据第二实时位置和所述终端的位置信息，确定所述终端与所述候选小区的小区覆盖参考点的第二距离，并根据所述第一距离和所述第二距离进行所述小区切换。
  7. 根据权利要求6所述的小区切换方法，其中，所述小区切换在所述第一距离大于第二阈值，且所述第二距离小于第三阈值的情况下进行。
  8. 根据权利要求4-7任一项所述的小区切换方法，其中，所述预测所述小区切换的候选小区包括：
    根据所述终端返回的所述当前服务小区的相邻小区的信号质量和所述终端的位置信息，预测所述候选小区。
  9. 根据权利要求4-8任一项所述的小区切换方法，其中，所述候选小区的配置信息包括无线资源配置信息。
  10. 根据权利要求1-9任一项所述的小区切换方法，其中，所述第一位置变化信息包括所述当前服务小区的小区覆盖参考点在第一预设时间段内的多个第一位置，以及所述多个第一位置中的每一个对应的时间信息。
  11. 根据权利要求1-9任一项所述的小区切换方法，还包括：
    在所述终端完成了所述小区切换的情况下，接收所述小区切换的目标小区发送的资源释放消息。
  12. 根据权利要求1-9任一项所述的小区切换方法，还包括：
    在所述终端发来针对所述小区切换的候选小区的更换请求信息的情况下，根据所述候选小区被请求更换的次数，更新所述候选小区的配置信息。
  13. 根据权利要求12所述的小区切换方法，其中，所述候选小区包括当前时刻的 候选小区，
    所述更新所述候选小区的配置信息包括：
    在所述被请求更换的次数小于第四阈值的情况下，对所述当前时刻的候选小区的配置信息进行更新；
    在所述被请求更换的次数大于或等于所述第四阈值的情况下，对所述当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
  14. 根据权利要求12或13所述的小区切换方法，还包括：
    在所述终端发来所述更换请求信息的情况下，对所述候选小区被请求更换的次数进行更新；
    在所述被请求更换的次数小于第四阈值的情况下，将更新后的所述候选小区被请求更换的次数发送给所述小区切换的目标小区。
  15. 根据权利要求12-14任一项所述的小区切换方法，还包括：
    在所述被请求更换的次数大于或等于第四阈值的情况下，将所述候选小区被请求更换的次数归零。
  16. 根据权利要求12-15任一项所述的小区切换方法，其中，所述更换请求信息包括所述当前服务小区的相邻小区的无线测量信息。
  17. 根据权利要求1-16任一项所述的小区切换方法，还包括：
    在所述当前服务小区对应的卫星移动到所述第一位置变化信息对应的最远点位置的情况下，将所述第一位置变化信息更新为第三位置变化信息；
    向所述终端发送所述第一位置变化信息被更新的提示信息，以便所述终端接收所述第三位置变化信息。
  18. 一种小区切换方法，包括：
    根据当前服务小区广播当的所述前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，确定是否触发小区切换；
    在确定触发所述小区切换的情况下，向所述当前服务小区返回终端的位置信息；
    根据所述当前服务小区发送的进行所述小区切换的相关信息，进行所述小区切换。
  19. 根据权利要求18所述的小区切换方法，其中，所述确定是否触发小区切换包括：
    根据所述第一位置变化信息，预测所述当前服务小区的小区覆盖参考点的第一实时位置；
    根据所述第一实时位置，确定是否触发所述小区切换。
  20. 根据权利要求19所述的小区切换方法，其中，所述确定是否触发所述小区切换包括：
    根据所述第一实时位置和所述终端的位置信息，确定所述终端与所述当前服务小区的小区覆盖参考点的第一距离；
    在所述第一距离大于第一阈值的情况下，触发所述小区切换。
  21. 根据权利要求18-20任一项所述的小区切换方法，其中，所述小区切换的相关信息包括所述小区切换的候选小区的配置信息，所述候选小区为所述当前服务小区根据所述终端的位置信息预测。
  22. 根据权利要求21所述的小区切换方法，其中，所述候选小区的配置信息包括所述候选小区的小区覆盖参考点在第二预设时间段内的第二位置变化信息，
    所述进行所述小区切换包括：
    根据所述第二位置变化信息和所述第一位置变化信息，进行所述小区切换。
  23. 根据权利要求22所述的小区切换方法，其中，所述进行所述小区切换包括：
    根据所述第一位置变化信息，预测所述当前服务小区的小区覆盖参考点的第一实时位置；
    根据所述第一实时位置和所述终端的位置信息，确定所述终端与所述当前服务小区的小区覆盖参考点的第一距离；
    根据所述第二位置变化信息，预测所述候选小区的小区覆盖参考点的第二实时位置；
    根据第二实时位置和所述终端的位置信息，确定所述终端与所述候选小区的小区覆盖参考点的第二距离；
    根据所述第一距离和所述第二距离，进行所述小区切换。
  24. 根据权利要求23所述的小区切换方法，其中，所述进行所述小区切换包括：
    在所述第一距离大于第二阈值，且所述第二距离小于第三阈值的情况下，进行所述小区切换。
  25. 根据权利要求21-24任一项所述的小区切换方法，还包括：
    在确定触发所述小区切换的情况下，向所述当前服务小区返回所述当前服务小区的相邻小区的信号质量，用于辅助所述当前服务小区预测所述候选小区。
  26. 根据权利要求18-25任一项所述的小区切换方法，还包括：
    在所述小区切换的候选小区的信道质量无法满足预设条件的情况下，向所述当前服务小区发送针对所述小区切换的候选小区的更换请求信息；
    接收所述当前服务小区发送的更新后的所述候选小区的配置信息，所述候选小区的配置信息根据所述候选小区被请求更换的次数更新。
  27. 根据权利要求26所述的小区切换方法，其中，所述候选小区包括当前时刻的候选小区，
    所述候选小区的配置信息通过下面的步骤进行更新：
    在所述被请求更换的次数小于第四阈值的情况下，对所述当前时刻的候选小区的配置信息进行更新；
    在所述被请求更换的次数大于或等于所述第四阈值的情况下，对所述当前时刻的候选小区的配置信息以及未来时刻的候选小区的配置信息进行更新。
  28. 根据权利要求18-27任一项所述的小区切换方法，还包括：
    在所述当前服务小区对应的卫星移动到所述第一位置变化信息对应的最远点位置的情况下，接收所述当前服务小区发送的所述第一位置变化信息被更新的提示信息，所述第一位置变化信息被更新为第三位置变化信息；
    根据所述提示信息，接收第三位置变化信息。
  29. 一种小区切换装置，包括：
    发送单元，用于向终端广播当前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，以便所述终端根据所述第一位置变化信息确定是否触发小区切换，在所述终端确定触发所述小区切换的情况下，向所述终端发送进行所述小区切换的相关信息，以便所述终端根据所述相关信息进行所述小区切换。
  30. 一种小区切换装置，包括：
    确定单元，用于根据当前服务小区广播当的所述前服务小区的小区覆盖参考点在第一预设时间段内的第一位置变化信息，确定是否触发小区切换；
    发送单元，用于在确定触发所述小区切换的情况下，向所述当前服务小区返回终端的位置信息；
    切换单元，用于根据所述当前服务小区发送的进行所述小区切换的相关信息，进行所述小区切换。
  31. 一种小区切换系统，包括：
    第一小区切换装置，用于执行权利要求1-17任一项所述的小区切换方法；
    第二小区切换装置，用于执行权利要求18-28任一项所述的小区切换方法。
  32. 一种电子设备，包括：
    存储器；和
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行权利要求1-17任一项所述的小区切换方法，或者权利要求18-28任一项所述的小区切换方法。
  33. 一种非易失性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现权利要求1-17任一项所述的小区切换方法，或者权利要求18-28任一项所述的小区切换方法。
  34. 一种计算机程序，包括：
    指令，所述指令当由处理器执行时使所述处理器执行根据权利要求1-17任一项所述的小区切换方法，或者权利要求18-28任一项所述的小区切换方法。
PCT/CN2024/091698 2023-07-03 2024-05-08 小区切换方法、装置、系统和电子设备 Ceased WO2025007640A1 (zh)

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