Cell switching method, device and system and electronic equipment

Abstract

The invention relates to a cell switching method, device and system and electronic equipment, and relates to the technical field of communication. The cell switching method comprises the following steps: broadcasting first position change information of a cell coverage reference point of a current service cell in a first preset time period to a terminal, so that the terminal determines whether to trigger cell switching according to the first position change information; and under the condition that the terminal determines to trigger the cell switching, sending related information of performing the cell switching to the terminal, so that the terminal performs the cell switching according to the related information. According to the technical scheme provided by the invention, relatively large broadcast message updating overhead can be prevented from being introduced.

Description

Technical Field

[0001] 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. Background Art

[0002] 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.

[0003] In the related technology, the NR (New Radio) Rel-17 (Release-17) NTN project supports broadcasting the real-time position of the cell coverage reference point at each moment for quasi-terrestrial fixed-beam cells to support location-based conditional switching. Summary of the invention

[0004] The inventors of the present disclosure have discovered that the above-mentioned related technologies have the following problems: when the reference point position is not fixed, a large broadcast message update overhead will be introduced, resulting in a decrease in communication performance.

[0005] In view of this, the present disclosure proposes a cell switching technical solution that can avoid introducing a large broadcast message update overhead.

[0006] According to some embodiments of the present disclosure, a cell switching method on the network side is provided, 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.

[0007] In some embodiments, 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.

[0008] In some embodiments, 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.

[0009] In some embodiments, the cell switching method on the network side also includes: when the terminal determines to trigger the cell switching, predicting the candidate cells for the cell switching based on the terminal location information returned by the terminal, the relevant information of the cell switching includes the configuration information of the candidate cells.

[0010] In some embodiments, 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.

[0011] In some embodiments, 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.

[0012] In some embodiments, 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.

[0013] In some embodiments, 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.

[0014] In some embodiments, the configuration information of the candidate cell includes radio resource configuration information.

[0015] In some embodiments, 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.

[0016] In some embodiments, 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.

[0017] In some embodiments, 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.

[0018] In some embodiments, the candidate cell includes the candidate cell at the current moment, and 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.

[0019] In some embodiments, 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.

[0020] In some embodiments, 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.

[0021] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0022] In some embodiments, 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.

[0023] According to other embodiments of the present disclosure, a cell switching method on the terminal side is provided, 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.

[0024] In some embodiments, 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.

[0025] In some embodiments, 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.

[0026] In some embodiments, 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.

[0027] In some embodiments, 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.

[0028] In some embodiments, 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 performing cell switching includes: performing cell switching according to the second position change information and the first position change information.

[0029] In some embodiments, performing 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; determining 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; predicting a second real-time position of a cell coverage reference point of a candidate cell based on second position change information; determining 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 performing cell switching based on the first distance and the second distance.

[0030] In some embodiments, 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.

[0031] In some embodiments, 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.

[0032] In some embodiments, 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.

[0033] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0034] In some embodiments, the candidate cell includes the candidate cell at the current moment, and 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.

[0035] In some embodiments, 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.

[0036] According to some further embodiments of the present disclosure, a cell switching device on the network side is provided, 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.

[0037] In some embodiments, 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.

[0038] In some embodiments, 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.

[0039] In some embodiments, 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.

[0040] In some embodiments, 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.

[0041] In some embodiments, 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.

[0042] In some embodiments, 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.

[0043] In some embodiments, 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.

[0044] In some embodiments, the configuration information of the candidate cell includes radio resource configuration information.

[0045] In some embodiments, 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.

[0046] In some embodiments, 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.

[0047] In some embodiments, 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.

[0048] In some embodiments, the candidate cells include the candidate cells at the current moment, and 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.

[0049] In some embodiments, when the terminal sends a replacement request message, the update 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 a fourth threshold, the sending unit sends the updated number of times the candidate cell is requested to be replaced to the target cell of the cell switching.

[0050] In some embodiments, 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.

[0051] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0052] In some embodiments, when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, 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.

[0053] According to some further embodiments of the present disclosure, a cell switching device on the terminal side is provided, 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.

[0054] In some embodiments, 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.

[0055] In some embodiments, 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.

[0056] In some embodiments, 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.

[0057] In some embodiments, 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.

[0058] In some embodiments, 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.

[0059] In some embodiments, 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.

[0060] In some embodiments, the switching unit performs cell switching when the first distance is greater than the second threshold and the second distance is less than the third threshold.

[0061] In some embodiments, 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.

[0062] In some embodiments, when the channel quality of the candidate cell for cell switching cannot meet the preset conditions, the sending unit 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.

[0063] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0064] In some embodiments, the candidate cell includes the candidate cell at the current moment, and 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.

[0065] In some embodiments, 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.

[0066] According to some further embodiments of the present disclosure, a cell switching system is provided, 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.

[0067] According to some further embodiments of the present disclosure, an electronic device is provided, 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.

[0068] According to some further embodiments of the present disclosure, a non-volatile computer-readable storage medium is provided, 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.

[0069] In the above embodiment, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0071] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings:

[0072] Figure 1 A flowchart showing some embodiments of the cell switching method disclosed in the present invention;

[0073] Figure 2a Schematic diagrams showing some embodiments of the ground mobile beam satellite cell of the present disclosure;

[0074] Figure 2b A signaling diagram showing some embodiments of the cell switching method of the present disclosure;

[0075] Figure 2c Flowcharts showing other embodiments of the cell switching method disclosed herein;

[0076] Figure 2d Flowcharts showing some further embodiments of the cell switching method disclosed herein;

[0077] Figure 3 Flowcharts showing some further embodiments of the cell switching method disclosed herein;

[0078] Figure 4a A block diagram showing some embodiments of the cell switching device disclosed in the present invention;

[0079] Figure 4b A block diagram showing some other embodiments of the cell switching device disclosed in the present invention;

[0080] Figure 5 A block diagram showing some embodiments of the electronic device of the present disclosure;

[0081] Figure 6 A block diagram showing some other embodiments of the electronic device of the present disclosure;

[0082] Figure 7 A block diagram showing some embodiments of the cell switching system of the present disclosure. DETAILED DESCRIPTION

[0083] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0084] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0085] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0086] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0087] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0088] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0089] As mentioned above, 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. However, for the ground mobile beam, since the location of the cell coverage reference point is not fixed, if the real-time location information of the cell coverage reference point is broadcasted, a large broadcast message update overhead will be introduced. Therefore, the above method does not support the switching of the ground mobile beam condition based on the location information.

[0090] In view of the above technical problems, 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.

[0091] For example, the technical solution of the present disclosure can be implemented through the following embodiments.

[0092] Figure 1 A flow chart showing some embodiments of the cell switching method of the present disclosure.

[0093] like Figure 1 As shown, in step 110, first location change information of a cell coverage reference point (Reference point) of a current serving cell within a first preset time period is broadcast to the terminal, so that the terminal determines whether to trigger cell switching according to the first location change information.

[0094] In some embodiments, 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.

[0095] For example, the first position change information is trajectory change information, and 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.

[0096] In some embodiments, 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.

[0097] For example, 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.

[0098] For example, 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.

[0099] For example, 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.

[0100] In 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.

[0101] In some embodiments, when the terminal determines to trigger a cell handover, 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.

[0102] For example, 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.

[0103] In some embodiments, 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.

[0104] For example, 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).

[0105] In some embodiments, 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.

[0106] In some embodiments, 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.

[0107] For example, 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.

[0108] For example, when there are multiple candidate cells, 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 based on the trajectory change information (such as the real-time position of the cell coverage reference point of the current serving cell and the real-time position of the cell coverage reference point of the candidate cell at the current moment); when the distance between the terminal and the cell coverage reference point of the current serving cell is greater than the second threshold, and the distance between the terminal and the cell coverage reference point of the candidate cell is less than the third threshold, conditional switching is performed to switch the terminal to the target cell (such as the candidate cell).

[0109] In some embodiments, the configuration information of the candidate cell includes radio resource configuration information.

[0110] In some embodiments, 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.

[0111] In some embodiments, when the terminal completes the cell switching, a resource release message sent by the target cell of the cell switching is received.

[0112] For example, when the terminal performs multiple handovers, that is, involves multiple target cells, the target cells sequentially send resource release messages to the source cells of the cell handover.

[0113] In some embodiments, when the terminal sends a candidate cell replacement request message for cell switching, the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be replaced. For example, the replacement request message includes wireless measurement information of neighboring cells of the current serving cell.

[0114] For example, for a candidate cell, if its channel quality requirement cannot meet the execution requirement of conditional switching, 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.

[0115] In some embodiments, the candidate cell includes the candidate cell at the current moment. When the number of requested changes is less than a fourth threshold, 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.

[0116] In some embodiments, when the terminal sends a change request message, 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.

[0117] For example, 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.

[0118] In some embodiments, when 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.

[0119] For example, when only the configuration of the candidate cell currently accessed is updated, the value of the counter of the candidate cell is transferred to the target cell as the cell switches; when the configuration of the candidate cell at the current moment and later moments is updated, the counter of the candidate cell is reset to zero, and the target cell restarts to maintain the counter.

[0120] In some embodiments, when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, 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.

[0121] For example, 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 re-received; when the terminal receives a change in the valueTag value in the broadcast message, the updated trajectory change information in the broadcast message is re-received.

[0122] Figure 2a Schematic diagram showing some embodiments of the ground mobile beam satellite cells of the present disclosure.

[0123] like Figure 2a As shown, 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.

[0124] 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.

[0125] In some embodiments, 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.

[0126] For example, first, 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.

[0127] Figure 2b A signaling diagram showing some embodiments of the cell switching method of the present disclosure.

[0128] like Figure 2b As shown, in event 210b, the ground mobile beam satellite cell (ie, the current service satellite) broadcasts the track change information of its cell coverage reference point. The track change information may include a list of cell coverage reference point positions and their corresponding relationships with time.

[0129] In event 220b, 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.

[0130] In event 230b, the terminal performs measurement reporting to the serving satellite. For example, 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.

[0131] In event 240b, the serving satellite may predict a plurality of candidate cells based on the ephemeris information and the location information of the terminal.

[0132] In event 250b, 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.

[0133] In step 260b, the serving satellite sends a conditional handover configuration, which may include radio resource configuration information and candidate cell trajectory change information.

[0134] In 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.

[0135] In 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.

[0136] When the terminal is located at position L2, 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.

[0137] In this way, the terminal can switch autonomously without frequent measurement reporting and configuration, thereby improving the efficiency of cell switching and communication performance.

[0138] Figure 2c Flowcharts showing other embodiments of the cell switching method of the present disclosure.

[0139] like Figure 2c As shown, in step 210c, the terminal determines that the channel quality of a candidate cell cannot meet the execution requirement of the conditional switching.

[0140] In 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.

[0141] In 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.

[0142] In 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.

[0143] In step 250c, the network side updates the configuration of candidate cells at the current time and later times.

[0144] In step 260c, the counter of the candidate cell is reset to zero, and the target cell restarts maintaining the counter.

[0145] In step 270c, the network side only updates the configuration of the candidate cell that should be accessed at the current moment.

[0146] In step 289c, the value of the counter of the candidate cell is transferred to the target cell as the cell is switched.

[0147] Figure 2d The flowcharts show some further embodiments of the cell switching method of the present disclosure.

[0148] like Figure 2d As shown, in step 210d, the ground mobile beam satellite cell broadcasts the trajectory change information of its cell coverage reference point information.

[0149] In 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.

[0150] In 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.

[0151] In 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.

[0152] Figure 3 The flowcharts show some further embodiments of the cell switching method of the present disclosure.

[0153] like Figure 3 As shown, in step 310, it is determined whether to trigger cell switching based on the first position change information of the cell coverage reference point of the previous serving cell broadcast by the current serving cell within the first preset time period.

[0154] In 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.

[0155] In step 330, cell switching is performed according to the relevant information for cell switching sent by the current serving cell.

[0156] In some embodiments, based on the first position change information, 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.

[0157] In some embodiments, 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.

[0158] In some embodiments, 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.

[0159] In some embodiments, 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.

[0160] In some embodiments, 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.

[0161] In some embodiments, based on 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.

[0162] In some embodiments, when the first distance is greater than the second threshold and the second distance is less than the third threshold, cell switching is performed.

[0163] In some embodiments, when it is determined that a cell handover is triggered, 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.

[0164] In some embodiments, when the channel quality of the candidate cell for cell switching cannot meet the preset conditions, 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.

[0165] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0166] In some embodiments, the candidate cell includes the candidate cell at the current moment, and 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.

[0167] In some embodiments, when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, 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.

[0168] For example, for a ground mobile beam satellite cell, the trajectory change information of the broadcast cell coverage reference point information is {(time 1, position 1); (time 2, position 2);

[0169] (time 3, position 3);}. The position information between different cell coverage reference points can be inferred in combination with the ephemeris information.

[0170] For example, when the terminal is at position 4, 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.

[0171] For example, 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)}.

[0172] For example, 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.

[0173] For example, the target cell sends resource release messages to the source cell in sequence.

[0174] For example, during the handover process, if the channel quality of the candidate cell cannot meet the conditional handover execution requirement, 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.

[0175] For example, 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.

[0176] For example, when the counter value is less than the threshold value 4, the network side only updates the configuration of the candidate cell that should be accessed at the current moment.

[0177] For example, when the counter value is greater than or equal to the threshold value 4, the network side updates the candidate cell configuration at the current time and the following time.

[0178] For example, when only the configuration of the candidate cell currently accessed is updated, the value of the counter is transferred to the target cell along with the handover.

[0179] For example, when the candidate cell configuration at the current time and the subsequent time is updated, the counter is reset to zero, and the target cell restarts to maintain the counter.

[0180] For example, as the satellite moves, when the satellite moves to the farthest point of the trajectory change information, the trajectory information update process is triggered.

[0181] For example, the satellite broadcasts updated trajectory information and updates the valueTag value in the SIB1 message.

[0182] For example, when the valueTag value in the broadcast message received by the terminal changes, the track change information in the broadcast message is received again.

[0183] In the above embodiment, the network broadcasts the track change information of the cell coverage reference point, and assists the terminal in predicting the real-time position of the ground mobile beam satellite cell. The network predicts multiple candidate cells based on the location information, and adds the track information of the candidate cells to the condition configuration. The terminal can trigger multiple conditional switches in sequence based on the location information, avoiding frequent interactions between the terminal and the network.

[0184] In the above embodiment, a conditional handover configuration update mechanism is designed. When the wireless channel cannot meet the conditional handover execution, 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.

[0185] Figure 4a A block diagram showing some embodiments of the cell switching apparatus of the present disclosure.

[0186] like Figure 4a As shown, 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 in the case that the terminal determines to trigger the cell switching, sends the relevant information for the cell switching to the terminal, so that the terminal performs the cell switching according to the relevant information.

[0187] In some embodiments, 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.

[0188] In some embodiments, 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.

[0189] In some embodiments, 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.

[0190] In some embodiments, 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.

[0191] In some embodiments, 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.

[0192] In some embodiments, 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.

[0193] In some embodiments, 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.

[0194] In some embodiments, the configuration information of the candidate cell includes radio resource configuration information.

[0195] In some embodiments, 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.

[0196] In some embodiments, 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.

[0197] In some embodiments, 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.

[0198] In some embodiments, the candidate cells include the candidate cells at the current moment, and 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.

[0199] In some embodiments, when the terminal sends a replacement request message, 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.

[0200] In some embodiments, 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.

[0201] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0202] In some embodiments, when the satellite corresponding to the current service cell moves to the farthest point corresponding to the first position change information, the updating unit 44a updates the first position change information to the third position change information; the sending unit 41a sends 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.

[0203] Figure 4b A block diagram showing some other embodiments of the cell switching device of the present disclosure.

[0204] like Figure 4b As shown, 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.

[0205] In some embodiments, 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.

[0206] In some embodiments, 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.

[0207] In some embodiments, 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.

[0208] In some embodiments, 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.

[0209] In some embodiments, 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.

[0210] In some embodiments, 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.

[0211] In some embodiments, 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.

[0212] In some embodiments, 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.

[0213] In some embodiments, when the channel quality of the candidate cell for cell switching cannot meet the preset conditions, 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 terminal side also includes a receiving unit 44b, which is used to receive 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.

[0214] In some embodiments, the replacement request information includes radio measurement information of neighboring cells of the current serving cell.

[0215] In some embodiments, the candidate cell includes the candidate cell at the current moment, and 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.

[0216] In some embodiments, 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.

[0217] Figure 5 A block diagram showing some embodiments of the electronic device of the present disclosure.

[0218] like Figure 5 As shown, 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.

[0219] 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.

[0220] Figure 6 A block diagram showing some other embodiments of the electronic device of the present disclosure.

[0221] like Figure 6 As shown, 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.

[0222] 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.

[0223] The electronic device 6 may also include an input / output interface 630, a network interface 640, a storage interface 650, etc. These interfaces 630, 640, 650, the memory 610, and the processor 620 may be connected, for example, via a bus 660. The input / output interface 630 provides a connection interface for input / output devices such as a display, a mouse, a keyboard, a touch screen, a microphone, and a speaker. The network interface 640 provides a connection interface for various networked devices. The storage interface 650 provides a connection interface for external storage devices such as an SD card and a USB flash drive.

[0224] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media including but not limited to disk storage, CD-ROM, optical storage, etc., which contain computer-usable program code.

[0225] Figure 7 A block diagram showing some embodiments of the cell switching system of the present disclosure.

[0226] like Figure 7 As shown, the cell switching system 7 includes: a first cell switching device 71, used to execute the cell switching method on the terminal side in any of the above embodiments; a second cell switching device 72, used to execute the cell switching method on the network side in any of the above embodiments.

[0227] So far, the cell switching method, cell switching device, cell switching system, electronic device and non-volatile computer-readable storage medium according to the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0228] The method and system of the present disclosure may be implemented in many ways. For example, 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. In addition, in some embodiments, 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.

[0229] Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cell switching method, comprising: 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 a cell handover according to the first position change information; In the case where the terminal determines to trigger the cell switching, 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.

2. The cell switching method according to claim 1, wherein: The first location change information is used to instruct the terminal to predict a first real-time location of a cell coverage reference point of the current serving cell based on the first location change information, so that the terminal determines whether to trigger the cell switching based on the first real-time location.

3. The cell switching method according to claim 2, wherein: 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 according to the first real-time position and the position information of the terminal, and trigger the cell switching when the first distance is greater than a first threshold.

4. The cell switching method according to claim 1, further comprising: In the case where the terminal determines to trigger the cell switching, candidate cells for the 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.

5. The cell switching method according to claim 4, wherein: 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, so that the terminal performs the cell switching according to the second position change information and the first position change information.

6. The cell switching method according to claim 5, wherein: The first position change information is used to instruct the terminal to predict a first real-time position of a cell coverage reference point of the current serving cell according to the first position change information, so that the terminal determines 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; 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 the cell switching based on the first distance and the second distance.

7. The cell switching method according to claim 6, wherein: The cell switching is performed when the first distance is greater than a second threshold and the second distance is less than a third threshold.

8. The cell switching method according to claim 4, wherein: The candidate cells for predicting the cell switching include: The candidate cell is predicted according to the signal quality of the neighboring cell of the current serving cell returned by the terminal and the location information of the terminal.

9. The cell switching method according to claim 4, wherein: The configuration information of the candidate cell includes radio resource configuration information.

10. The cell switching method according to any one of claims 1 to 9, wherein: The first location change information includes a plurality of first locations of a cell coverage reference point of the current serving cell within a first preset time period, and time information corresponding to each of the plurality of first locations.

11. The cell switching method according to any one of claims 1 to 9, further comprising: When the terminal completes the cell switching, a resource release message sent by a target cell of the cell switching is received.

12. The cell switching method according to any one of claims 1 to 9, further comprising: When the terminal sends a request information for changing a candidate cell for the cell switching, the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be changed.

13. The cell switching method according to claim 12, wherein: The candidate cells include the candidate cells at the current moment, The updating of the configuration information of the candidate cell includes: 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, the configuration information of the candidate cells at the current moment and the configuration information of the candidate cells at the future moment are updated.

14. The cell switching method according to claim 12, further comprising: When the terminal sends the change request information, updating the number of times the candidate cell is requested to be changed; When the number of times the replacement is requested is less than a fourth threshold, the updated number of times the candidate cell is requested to be replaced is sent to the target cell for the cell switching.

15. The cell switching method according to claim 12, further comprising: When 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.

16. The cell switching method according to claim 12, wherein: The replacement request information includes radio measurement information of neighboring cells of the current serving cell.

17. The cell switching method according to any one of claims 1 to 9, further comprising: When the satellite corresponding to the current serving cell moves to the farthest point corresponding to the first position change information, updating the first position change information to third position change information; Sending prompt information that the first location change information is updated to the terminal so that the terminal receives the third location change information.

18. A cell switching method, comprising: Determine whether to trigger cell switching according to first position change information of a cell coverage reference point of the previous serving cell within a first preset time period broadcast by the current serving cell; In the case of determining that the cell switching is triggered, returning the location information of the terminal to the current serving cell; The cell switching is performed according to the relevant information for performing the cell switching sent by the current serving cell.

19. The cell switching method according to claim 18, wherein: The determining whether to trigger cell switching includes: Predicting a first real-time position of a cell coverage reference point of the current serving cell according to the first position change information; Determine whether to trigger the cell switching according to the first real-time position.

20. The cell switching method according to claim 19, wherein: The determining whether to trigger the cell switching comprises: Determine, according to the first real-time position and the position information of the terminal, a first distance between the terminal and a cell coverage reference point of the current serving cell; When the first distance is greater than a first threshold, the cell switching is triggered.

21. The cell switching method according to claim 18, wherein: The cell switching related information includes configuration information of candidate cells for the cell switching, and the candidate cells are predicted by the current serving cells according to the location information of the terminal.

22. The cell switching method according to claim 21, wherein: 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, The performing the cell switching comprises: The cell switching is performed according to the second location change information and the first location change information.

23. The cell switching method according to claim 22, wherein: The performing the cell switching comprises: Predicting a first real-time position of a cell coverage reference point of the current serving cell according to the first position change information; Determine, according to the first real-time position and the position information of the terminal, a first distance between the terminal and a cell coverage reference point of the current serving cell; Predicting a second real-time position of a cell coverage reference point of the candidate cell according to the second position change information; Determine, according to the second real-time position and the position information of the terminal, a second distance between the terminal and a cell coverage reference point of the candidate cell; The cell switching is performed according to the first distance and the second distance.

24. The cell switching method according to claim 23, wherein: The performing the cell switching comprises: When the first distance is greater than a second threshold and the second distance is less than a third threshold, the cell switching is performed.

25. The cell switching method according to claim 21, further comprising: In the case where it is determined that the cell switching is triggered, the signal quality of the neighboring cell of the current serving cell is returned to the current serving cell to assist the current serving cell in predicting the candidate cell.

26. The cell switching method according to any one of claims 18 to 25, further comprising: When the channel quality of the candidate cell for the cell switching fails to meet the preset condition, sending a replacement request message for the candidate cell for the cell switching to the current serving cell; The updated configuration information of the candidate cell sent by the current serving cell is received, wherein the configuration information of the candidate cell is updated according to the number of times the candidate cell is requested to be replaced.

27. The cell switching method according to claim 26, wherein: The candidate cells include the candidate cells at the current moment, The configuration information of the candidate cell is updated through the following steps: 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, the configuration information of the candidate cells at the current moment and the configuration information of the candidate cells at the future moment are updated.

28. The cell switching method according to any one of claims 18 to 25, further comprising: When the satellite corresponding to the current serving cell moves to the farthest point corresponding to the first position change information, receiving prompt information sent by the current serving cell indicating that the first position change information is updated, and the first position change information is updated to third position change information; According to the prompt information, third position change information is received.

29. A cell switching device, comprising: A sending unit 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. When the terminal determines to trigger the cell switching, 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.

30. A cell switching device, comprising: A determination unit, configured to determine whether to trigger cell switching according to first position change information of a cell coverage reference point of the previous serving cell within a first preset time period broadcast by the current serving cell; A sending unit, configured to return the location information of the terminal to the current serving cell when determining that the cell switching is triggered; The switching unit is used to perform the cell switching according to the relevant information for performing the cell switching sent by the current serving cell.

31. A cell switching system, comprising: A first cell switching device, configured to execute the cell switching method according to any one of claims 1 to 17; The second cell switching device is used to execute the cell switching method described in any one of claims 18-28.

32. An electronic device comprising: Memory; and A processor coupled to the memory, the processor being configured to execute the cell switching method according to any one of claims 1 to 17, or the cell switching method according to any one of claims 18 to 28, based on instructions stored in the memory.

33. A non-volatile computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the cell switching method according to any one of claims 1 to 17 or the cell switching method according to any one of claims 18 to 28 is implemented.

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