A switching method, device and equipment

Abstract

The present invention provides a switching method, device and equipment, which relate to the field of communication technology. The method includes: obtaining a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching conditions, the first target satellite frequency is determined according to the switching related information; and a switching request is sent according to the first target satellite frequency. The solution of the present invention can reduce the signaling interaction between the user equipment and the satellite and improve the switching efficiency.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a switching method, device and equipment. Background Art

[0002] At present, compared with the traditional ground mobile communication network, the moving speed of medium and low orbit satellites is constantly changing relative to a given user location, and the moving speed is very fast. Taking a low-Earth satellite as an example, assuming that its orbital period is 2 hours, the coverage time of the low-Earth satellite in a certain area is about 20 minutes. At the same time, the satellite has multiple beams, each beam represents a cell, and its coverage time is shorter.

[0003] As such, the switching of satellite communications is very different from that of terrestrial mobile communication networks. How to accelerate the switching based on the characteristics of satellite networks has become one of the issues that need attention. Summary of the invention

[0004] The object of the present invention is to provide a switching method, device and equipment to avoid the influence of intermodulation interference.

[0005] To achieve the above object, an embodiment of the present invention provides a handover method, which is performed by a user equipment and includes:

[0006] Acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching;

[0007] When the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, determining a first target satellite frequency point according to the switching related information;

[0008] A switching request is sent according to the first target satellite frequency.

[0009] Optionally, the handover related information includes at least one of the following:

[0010] Frequency information;

[0011] Beam information;

[0012] Community information.

[0013] Optionally, the acquiring the first time delay under the target beam and the switching related information of the first satellite includes:

[0014] Sending the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0015] receiving the first time delay and the switching related information sent by the second satellite.

[0016] Optionally, the acquiring the first time delay under the target beam and the switching related information of the first satellite includes:

[0017] Determining a first delay under the target beam according to beam information in the satellite broadcast message;

[0018] Determining the first satellite according to the ephemeris information and the first time delay;

[0019] Sending the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0020] receiving all beam information of the first satellite sent by the second satellite;

[0021] The switching related information is obtained according to all beam information of the first satellite.

[0022] Optionally, the first time delay is the duration between the first moment and the second moment;

[0023] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0024] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0025] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0026] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0027] Optionally, the switching condition is that the second delay is greater than the difference between the first delay and a preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite.

[0028] Optionally, determining a first target satellite frequency point according to the switching related information includes:

[0029] Performing measurement based on the handover related information and selecting a first target satellite frequency point;

[0030] Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

[0031] Optionally, the method further comprises:

[0032] When the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, sending a measurement request application to a third satellite, where the third satellite is the currently connected satellite;

[0033] receiving a measurement request sent by the third satellite, where the measurement request carries satellite information to be measured;

[0034] Determining a second target satellite frequency point according to the satellite information to be measured;

[0035] A switching request is sent according to the second target satellite frequency.

[0036] Optionally, the determining, according to the satellite information to be measured, a second target satellite frequency point includes:

[0037] Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point;

[0038] The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

[0039] Optionally, the handover request carries a measurement report.

[0040] To achieve the above object, an embodiment of the present invention provides a switching method, which is performed by a satellite and includes:

[0041] Receiving current location information of a user device;

[0042] According to the current location information, perform one of the following steps:

[0043] Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or,

[0044] Send all beam information of the first satellite.

[0045] Optionally, the handover related information includes at least one of the following:

[0046] Frequency information;

[0047] Beam information;

[0048] Community information.

[0049] Optionally, the first time delay is the duration between the first moment and the second moment;

[0050] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0051] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0052] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0053] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0054] To achieve the above object, an embodiment of the present invention provides a switching device, comprising:

[0055] An acquisition module is used to acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching;

[0056] A first processing module, configured to determine a first target satellite frequency point according to the switching related information when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition;

[0057] The second processing module is used to send a switching request according to the first target satellite frequency.

[0058] Optionally, the handover related information includes at least one of the following:

[0059] Frequency information;

[0060] Beam information;

[0061] Community information.

[0062] Optionally, the acquisition module includes:

[0063] A first sending submodule, configured to send the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0064] The first receiving submodule is configured to receive the first time delay and the switching related information sent by the second satellite.

[0065] Optionally, the acquisition module includes:

[0066] A first determination submodule, configured to determine a first delay under the target beam according to beam information in a satellite broadcast message;

[0067] A second determination submodule, configured to determine the first satellite according to the ephemeris information and the first time delay;

[0068] A second sending submodule, configured to send the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0069] A second receiving submodule, configured to receive all beam information of the first satellite sent by the second satellite;

[0070] The first processing submodule is used to obtain the switching related information according to all beam information of the first satellite.

[0071] Optionally, the first time delay is the duration between the first moment and the second moment;

[0072] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0073] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0074] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0075] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0076] Optionally, the switching condition is that the second delay is greater than the difference between the first delay and a preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite.

[0077] Optionally, the second processing module is further used for:

[0078] Performing measurement based on the handover related information and selecting a first target satellite frequency point;

[0079] Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

[0080] Optionally, the device further comprises:

[0081] A measurement request module, configured to send a measurement request application to a third satellite when the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, wherein the third satellite is the currently connected satellite;

[0082] A measurement receiving module, configured to receive a measurement request sent by the third satellite, wherein the measurement request carries information of the satellite to be measured;

[0083] A measurement determination module, configured to determine a second target satellite frequency point according to the satellite information to be measured;

[0084] The measurement switching module is used to send a switching request according to the second target satellite frequency.

[0085] Optionally, the measurement determination module is further used to:

[0086] Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point;

[0087] The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

[0088] Optionally, the handover request carries a measurement report.

[0089] To achieve the above object, an embodiment of the present invention provides a switching device, comprising:

[0090] A receiving module, used to receive current location information of a user device;

[0091] The third processing module is configured to perform one of the following steps according to the current location information:

[0092] Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or,

[0093] Send all beam information of the first satellite.

[0094] Optionally, the handover related information includes at least one of the following:

[0095] Frequency information;

[0096] Beam information;

[0097] Community information.

[0098] Optionally, the first time delay is the duration between the first moment and the second moment;

[0099] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0100] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0101] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0102] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0103] To achieve the above objective, an embodiment of the present invention provides a user equipment, including a processor, wherein the processor is configured to:

[0104] Acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching;

[0105] When the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, determining a first target satellite frequency point according to the switching related information;

[0106] A switching request is sent according to the first target satellite frequency.

[0107] Optionally, the handover related information includes at least one of the following:

[0108] Frequency information;

[0109] Beam information;

[0110] Community information.

[0111] Optionally, the user equipment further includes a transceiver, and the transceiver is used to:

[0112] Sending the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0113] receiving the first time delay and the switching related information sent by the second satellite.

[0114] Optionally, the processor is further configured to determine a first delay under the target beam according to beam information in a satellite broadcast message;

[0115] The processor is further configured to determine the first satellite according to the ephemeris information and the first time delay;

[0116] The transceiver is further used to send the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0117] The transceiver is also used to receive all beam information of the first satellite sent by the second satellite;

[0118] The processor is further configured to obtain the switching related information according to all beam information of the first satellite.

[0119] Optionally, the first time delay is the duration between the first moment and the second moment;

[0120] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0121] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0122] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0123] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0124] Optionally, the switching condition is that the second delay is greater than the difference between the first delay and a preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite.

[0125] Optionally, the processor is further configured to

[0126] Performing measurement based on the handover related information and selecting a first target satellite frequency point;

[0127] Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

[0128] Optionally, the transceiver is further used for:

[0129] When the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, sending a measurement request application to a third satellite, where the third satellite is the currently connected satellite;

[0130] receiving a measurement request sent by the third satellite, where the measurement request carries satellite information to be measured;

[0131] The processor is further configured to:

[0132] Determining a second target satellite frequency point according to the satellite information to be measured;

[0133] A switching request is sent according to the second target satellite frequency.

[0134] Optionally, the processor is further configured to:

[0135] Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point;

[0136] The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

[0137] Optionally, the handover request carries a measurement report.

[0138] To achieve the above object, an embodiment of the present invention provides a satellite, comprising: a transceiver and a processor.

[0139] The transceiver is used to receive current location information of the user equipment;

[0140] The processor is configured to perform one of the following steps according to the current location information:

[0141] Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or,

[0142] Send all beam information of the first satellite.

[0143] Optionally, the handover related information includes at least one of the following:

[0144] Frequency information;

[0145] Beam information;

[0146] Community information.

[0147] Optionally, the first time delay is the duration between the first moment and the second moment;

[0148] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0149] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0150] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0151] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0152] To achieve the above-mentioned purpose, an embodiment of the present invention provides a user equipment, including: a transceiver, a processor, a memory, and a program or instruction stored in the memory and executable on the processor; when the processor executes the program or instruction, the switching method as described above is implemented.

[0153] To achieve the above-mentioned purpose, an embodiment of the present invention provides a satellite, comprising: a transceiver, a processor, a memory, and a program or instruction stored in the memory and executable on the processor; when the processor executes the program or instruction, the switching method as described above is implemented.

[0154] To achieve the above objective, an embodiment of the present invention provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps in the switching method described above are implemented.

[0155] The beneficial effects of the above technical solution of the present invention are as follows:

[0156] According to the method of the embodiment of the present invention, the user equipment can obtain the first delay under the corresponding beam (i.e., the target beam) for the connected cell (e.g., the initial access cell or the access cell after switching) or the cell to be connected (e.g., the cell to be initially prepared for access), and obtain the switching related information of the first satellite (i.e., the satellite available for switching). Afterwards, when the signal strength of the cell currently connected to the user equipment is less than the preset threshold and the first satellite meets the switching condition, the first target satellite frequency is further determined based on the obtained switching related information, thereby sending a switching request and completing the switching of satellite communication, which can reduce the signaling interaction between the user equipment and the satellite and improve the switching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0157] Figure 1 One of the flow charts of the switching method according to an embodiment of the present invention;

[0158] Figure 2 This is one of the application schematic diagrams of the embodiment of the present invention;

[0159] Figure 3 This is the second application schematic diagram of the embodiment of the present invention;

[0160] Figure 4 A schematic diagram of the delay of an embodiment of the present invention;

[0161] Figure 5 This is a schematic diagram of the satellite beam coverage area;

[0162] Figure 6This is the third application schematic diagram of the embodiment of the present invention;

[0163] Figure 7 This is the fourth application schematic diagram of the embodiment of the present invention;

[0164] Figure 8 This is a second flowchart of the switching method according to an embodiment of the present invention;

[0165] Fig. 9 is one of the structural diagrams of the switching device according to an embodiment of the present invention;

[0166] Fig.10 This is a second structural diagram of the switching device according to an embodiment of the present invention;

[0167] Fig.11 A structural diagram of a user equipment according to an embodiment of the present invention;

[0168] Fig.12 4 is a structural diagram of a satellite according to an embodiment of the present invention. DETAILED DESCRIPTION

[0169] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0170] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0171] In various embodiments of the present invention, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0172] Additionally, the terms "system" and "network" are often used interchangeably herein.

[0173] In the embodiments provided in the present application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0174] like Figure 1 As shown, a switching method in an embodiment of the present invention is performed by a user equipment, including:

[0175] Step 101, obtaining a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching;

[0176] Step 102: when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, determine a first target satellite frequency according to the switching related information;

[0177] Step 103: Send a switching request according to the first target satellite frequency.

[0178] According to the above steps, the user equipment can obtain the first delay under the corresponding beam (i.e., the target beam) for the connected cell (e.g., the initial access cell or the access cell after switching) or the cell to be connected (e.g., the cell to be initially prepared for access), and obtain the switching related information of the first satellite (i.e., the satellite available for switching). Afterwards, when the signal strength of the cell currently connected to the user equipment is less than the preset threshold and the first satellite meets the switching conditions, the first target satellite frequency is further determined based on the obtained switching related information, thereby sending a switching request and completing the switching of satellite communications. This can reduce the signaling interaction between the user equipment and the satellite and improve the switching efficiency.

[0179] The first delay is the time length of time that the user equipment is in the target beam coverage area starting from the current moment, and the switching condition is configured based on the first delay to ensure seamless connection of data communication.

[0180] The first satellite is a satellite that can be switched next time for a satellite that is currently connected or to be connected.

[0181] Optionally, the handover related information includes at least one of the following:

[0182] Frequency information;

[0183] Beam information;

[0184] Community information.

[0185] That is, any one of the frequency point information, beam information and cell information of the satellite available for switching is obtained. Of course, the switching related information of the first satellite may include but is not limited to the above information.

[0186] It should be known that, in this embodiment, the acquired first delay and the switching related information of the first satellite may be determined by the satellite, and the user equipment directly requests the satellite; or may be determined autonomously by the user equipment.

[0187] Therefore, on the one hand, optionally, the acquiring the first time delay under the target beam and the switching related information of the first satellite includes:

[0188] Sending the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0189] receiving the first time delay and the switching related information sent by the second satellite.

[0190] Here, the user equipment sends its current location information to the second satellite, and the second satellite feeds back the corresponding first delay and the switching related information of the first satellite to the user equipment according to the current location information.

[0191] For example, the second satellite is the satellite to be connected currently. Figure 2 As shown, the user equipment initiates an RRC connection, and the current location information of the user equipment is carried in the connection message. After the connection is successfully established, the satellite feeds back the first delay and the switching related information of the next available satellite for switching.

[0192] Of course, the second satellite is the currently connected satellite. After a switch, when the user equipment connects to a new satellite cell, it can also send the current location information of the user equipment, and the new satellite cell will feedback the first delay and the switching related information of the next satellite available for switching.

[0193] On the other hand, optionally, acquiring the first time delay under the target beam and the switching related information of the first satellite includes:

[0194] Determining a first delay under the target beam according to beam information in the satellite broadcast message;

[0195] Determining the first satellite according to the ephemeris information and the first time delay;

[0196] Sending the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0197] receiving all beam information of the first satellite sent by the second satellite;

[0198] The switching related information is obtained according to all beam information of the first satellite.

[0199] Here, the user device will receive the satellite broadcast message, determine the first delay with the help of the beam information in the satellite broadcast message, and then determine the next satellite available for switching in combination with the first delay and the ephemeris information, and then send the current location information of the user device and the identity information of the next satellite available for switching to the second satellite, thereby receiving all the beam information of the next satellite available for switching fed back by the second satellite, and finally obtaining the switching related information of the next satellite available for switching from all the beam information of the next satellite available for switching.

[0200] For example, the second satellite is the satellite to be connected currently. Figure 3 As shown, the user equipment determines the first delay using the beam information obtained in the satellite broadcast message; determines the next satellite available for switching based on the ephemeris information and the first delay; the user equipment initiates an RRC connection, and carries the current location information of the user equipment and the identity information of the next satellite available for switching in the connection message; after the connection is successfully established, the satellite feeds back the corresponding all beam information based on the identity information of the first satellite; the user equipment determines the switching related information based on the all beam information of the next satellite available for switching.

[0201] Similarly, the second satellite can be a currently connected satellite. For example, after a switch, when the user equipment connects to a new satellite cell, it can also send the current location information of the user equipment and the identity information of the next satellite available for switching that is determined autonomously. The new satellite cell will feedback the distinctive beam information of the next satellite available for switching, and then determine the switching-related information of the next satellite available for switching.

[0202] It should be noted that, in this embodiment, the manner in which the satellite determines or the user equipment determines the first time delay is the same.

[0203] Optionally, the first time delay is the duration between the first moment and the second moment;

[0204] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0205] like Figure 4 As shown in FIG. 1 , assuming that the user equipment is currently connected to the cell of satellite A beam 1, the current time is T1, and the first time is T1. The user equipment or satellite will be determined by the trajectory of satellite A, the beam direction, and the user equipment coverage area. The time when the user equipment coverage area is at the edge of the coverage area of ​​satellite A beam 1 is T2, and the second time is T2. Therefore, the first delay T next =T2-T1.

[0206] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0207] Here, the reference location information may be the location information of the user equipment at the last handover. If it is an initial access, the reference location information is consistent with the current location information.

[0208] Specifically, the user equipment coverage area is determined based on the current location information and the reference location information, which may be a circular area with the current location of the user equipment as the center and R as the radius, where R=Max[L, d const], where L = M*(1+β), M is the distance between the current position of the user equipment and the reference position, β is a preset parameter, 0<β≤1, d const The preset radius value.

[0209] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0210] That is to say, the next satellite available for switching is a satellite whose beam coverage area covers the coverage area of ​​the user equipment at the second moment.

[0211] For example, Figure 5 As shown, at time T2, the user equipment coverage area is at the edge of the beam 1 coverage area of ​​satellite A. At this time, the beam 2 coverage area of ​​satellite A covers the user equipment coverage area, and the beam 3 coverage area of ​​satellite B covers the user equipment coverage area. Then, satellite A and satellite B are both satellites available for switching next time.

[0212] However, it should be understood that a satellite may have multiple beams. As the satellite available for the next switching, not all of its beams can be used for switching. For example, beam 1 of satellite A, as satellite A moves, the coverage area of ​​beam 1 will no longer cover the coverage area of ​​the user equipment; another example is beam 4 of satellite B, the coverage area of ​​beam 4 does not cover the coverage area of ​​the user equipment. Therefore, in the switching related information of the first satellite, the beam information indicates the beam that has a coverage area covering the coverage area of ​​the user equipment at the second moment.

[0213] Of course, in the case where there are multiple satellites available for switching next time, if the coverage area of ​​another beam of the satellite to which the user equipment is currently connected or to be connected covers the coverage area of ​​the user equipment at the second moment, it is preferred that the first satellite is the same satellite as the satellite to which the user equipment is currently connected or to be connected; if the same satellite does not have a matching beam, the satellite corresponding to the beam with the largest delay is selected.

[0214] Correspondingly, in the switching related information of the first satellite, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0215] That is to say, the beam information of the first satellite is obtained, and when the coverage area of ​​another beam (such as beam A) of the satellite to which the user equipment is currently connected or to be connected covers the coverage area of ​​the user equipment at the second moment, the information of beam A of the satellite to which the user equipment is currently connected or to be connected is obtained; when the coverage area of ​​no beam of the satellite to which the user equipment is currently connected or to be connected covers the coverage area of ​​the user equipment at the second moment, the beam information of the beam with the largest delay is selected.

[0216] Among them, the delay T based on which the beam selection is based next ' is the time length from T2 onwards that the user equipment can be in the coverage area of ​​the corresponding beam, and is calculated in the same way as T next Similar to T next '=T3-T2, T3 is the moment when the coverage area of ​​the user equipment is at the edge of the coverage area of ​​the corresponding beam.

[0217] In addition, in this embodiment, when the signal strength of the currently connected cell is less than a preset threshold and there is a switching requirement, considering the effective switching of communication, optionally, the switching condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current position of the user equipment is in the coverage area of ​​the first satellite.

[0218] Here, the second delay T current is the time length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the current moment when the switching requirement is present, and is calculated in the same way as T next Similar to T current =T5-T4, T4 is the current time, T5 is the time when the user equipment coverage area is at the edge of the corresponding beam coverage area. offset Is preconfigured or defined.

[0219] In this embodiment, whether the first satellite meets the switching condition is determined by the user equipment through comprehensive judgment based on the current position, the first delay, the second delay, and ephemeris information.

[0220] When the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, optionally, determining the first target satellite frequency point according to the switching related information includes:

[0221] Performing measurement based on the handover related information and selecting a first target satellite frequency point;

[0222] Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

[0223] That is, the user equipment measures the handover related information of the first satellite that meets the handover condition, and has a signal greater than a preset threshold on the first target satellite frequency point, and the duration is greater than the preset duration. After that, the user equipment can initiate a handover request from the first target satellite frequency point. That is, the handover is initiated after the measurement result meets the requirements, accelerating the handover process to ensure seamless connection of data communication.

[0224] For example, Figure 6 As shown, the user equipment finds that the signal of the current cell (currently connected cell) is continuously less than the preset threshold, and Tcurrent >T next -T offset , and the current position is in the coverage area of ​​the satellite available for switching, measurements are performed based on the switching related information of the satellite available for switching, and the satellite frequency (first target satellite frequency) with a signal greater than a preset threshold and a duration greater than a preset duration is determined. The user equipment initiates a switching request. Satellite 1 (the satellite corresponding to the current cell) performs switching preparations and issues a switching instruction after the preparations are completed. The user equipment accesses satellite 2 (the satellite corresponding to the new cell) according to the switching instruction. After this switching is successful, based on the above content, the first delay of the new target beam and at least one of the frequency information, beam information and cell information of the satellite available for switching next time can be obtained.

[0225] In addition, when the signal strength of the currently connected cell is less than a preset threshold, the first satellite may not meet the switching condition. Therefore, in this embodiment, optionally, the method further includes:

[0226] When the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, sending a measurement request application to a third satellite, where the third satellite is the currently connected satellite;

[0227] receiving a measurement request sent by the third satellite, where the measurement request carries satellite information to be measured;

[0228] Determining a second target satellite frequency point according to the satellite information to be measured;

[0229] A switching request is sent according to the second target satellite frequency.

[0230] Here, the satellite information to be measured includes at least one of the following information of the measurement satellite: frequency information; beam information; cell information.

[0231] In this way, when the signal strength of the cell to which the user equipment is currently connected is less than a preset threshold and there is a switching requirement, if the first satellite cannot meet the switching conditions, the user equipment will request the currently connected satellite for the satellite information that needs to be measured to determine the second target satellite frequency point, and then the second target satellite frequency point will send a switching request to complete the switching, so as to avoid the inability to achieve switching under abnormal circumstances and ensure seamless data communication.

[0232] Optionally, the determining, according to the satellite information to be measured, a second target satellite frequency point includes:

[0233] Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point;

[0234] The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

[0235] That is, the user equipment performs measurement based on the satellite information to be measured, and at the second target satellite frequency point, there is a signal greater than the preset threshold, and the duration is greater than the preset duration, wherein the satellite corresponding to the second target satellite frequency point meets the above-mentioned switching conditions. After that, the user equipment can initiate a switching request from the second target satellite frequency point. Here, the switching is initiated after the measurement results meet the requirements, accelerating the switching process to ensure seamless connection of data communication.

[0236] For example, Figure 7 As shown, when the signal strength of the cell currently connected to the user equipment is less than the preset threshold and there is a handover requirement, the first satellite cannot meet the handover condition, that is, T current <T next -T offset , and / or the current position is not in the coverage area of ​​the satellite available for switching, actively send a measurement request application to satellite 1 (the currently connected satellite), requesting the satellite to provide the measured satellite information based on the current position of the user equipment. Satellite 1 feeds back the satellite information that needs to be measured in the measurement request. The user equipment performs measurements based on the satellite information that needs to be measured, and determines the satellite frequency (second target satellite frequency) with a signal greater than a preset threshold and a duration greater than a preset duration. The user equipment initiates a switching request to satellite 1. Satellite 1 performs switching preparations and issues a switching instruction after the preparations are completed. The user equipment accesses satellite 2 (the satellite corresponding to the new cell) according to the switching instruction. After this switching is successful, based on the above content, the first delay of the new target beam and at least one of the frequency information, beam information and cell information of the satellite available for switching next time can be obtained.

[0237] Optionally, in this embodiment, the handover request carries a measurement report.

[0238] Here, the measurement report corresponds to a measurement report within a preconfigured period of time, so that the satellite can make adaptive switching preparations.

[0239] In summary, the method of the embodiment of the present invention accelerates the switching process, ensures seamless connection of data communication, can reduce the signaling interaction between the user equipment and the satellite, and improves the switching efficiency.

[0240] like Figure 8 As shown, a switching method according to an embodiment of the present invention is executed by a satellite, and includes:

[0241] Step 801, receiving current location information of a user device;

[0242] Step 802: perform one of the following steps according to the current location information:

[0243] Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or,

[0244] Send all beam information of the first satellite.

[0245] According to the above method, based on the current location information of the user equipment, the first delay under the target beam and the switching related information of the first satellite, or all the beam information of the first satellite are provided to the user equipment, so that when the signal strength of the currently connected cell is less than the preset threshold and the first satellite meets the switching condition, the user equipment can further determine the first target satellite frequency according to the obtained switching related information, thereby sending a switching request and completing the switching of satellite communication. This can reduce the signaling interaction between the user equipment and the satellite and improve the switching efficiency.

[0246] Optionally, the handover related information includes at least one of the following:

[0247] Frequency information;

[0248] Beam information;

[0249] Community information.

[0250] Optionally, the first time delay is the duration between the first moment and the second moment;

[0251] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0252] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0253] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0254] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0255] It should be noted that the implementation of the satellite (such as the first satellite, the second satellite, and the third satellite) in the above-mentioned switching method embodiment executed by the user equipment can also be implemented by the satellite in the embodiment of the present invention, which will not be described in detail here.

[0256] like Fig. 9As shown, a switching device according to an embodiment of the present invention includes:

[0257] The acquisition module 910 is used to acquire the first delay under the target beam and the switching related information of the first satellite; wherein the target beam is the beam corresponding to the connected or to-be-connected cell, and the first satellite is a satellite available for switching;

[0258] A first processing module 920 is configured to determine a first target satellite frequency point according to the switching related information when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition;

[0259] The second processing module 930 is configured to send a switching request according to the first target satellite frequency.

[0260] The device can obtain the first delay under the corresponding beam (i.e., the target beam) for the connected cell (e.g., the initial access cell or the access cell after switching) or the cell to be connected (e.g., the cell to be initially accessed), and obtain the switching related information of the first satellite (i.e., the satellite available for switching). Afterwards, when the signal strength of the cell currently connected to the user equipment is less than the preset threshold and the first satellite meets the switching conditions, the first target satellite frequency is further determined based on the obtained switching related information, thereby sending a switching request and completing the switching of satellite communication, which can reduce the signaling interaction between the user equipment and the satellite and improve the switching efficiency.

[0261] Optionally, the handover related information includes at least one of the following:

[0262] Frequency information;

[0263] Beam information;

[0264] Community information.

[0265] Optionally, the acquisition module includes:

[0266] A first sending submodule, configured to send the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0267] The first receiving submodule is configured to receive the first time delay and the switching related information sent by the second satellite.

[0268] Optionally, the acquisition module includes:

[0269] A first determination submodule, configured to determine a first delay under the target beam according to beam information in a satellite broadcast message;

[0270] A second determination submodule, configured to determine the first satellite according to the ephemeris information and the first time delay;

[0271] A second sending submodule, configured to send the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0272] A second receiving submodule, configured to receive all beam information of the first satellite sent by the second satellite;

[0273] The first processing submodule is used to obtain the switching related information according to all beam information of the first satellite.

[0274] Optionally, the first time delay is the duration between the first moment and the second moment;

[0275] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0276] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0277] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0278] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0279] Optionally, the switching condition is that the second delay is greater than the difference between the first delay and a preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite.

[0280] Optionally, the second processing module is further used for:

[0281] Performing measurement based on the handover related information and selecting a first target satellite frequency point;

[0282] Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

[0283] Optionally, the device further comprises:

[0284] A measurement request module, configured to send a measurement request application to a third satellite when the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, wherein the third satellite is the currently connected satellite;

[0285] A measurement receiving module, configured to receive a measurement request sent by the third satellite, wherein the measurement request carries information of the satellite to be measured;

[0286] A measurement determination module, configured to determine a second target satellite frequency point according to the satellite information to be measured;

[0287] The measurement switching module is used to send a switching request according to the second target satellite frequency.

[0288] Optionally, the measurement determination module is further used to:

[0289] Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point;

[0290] The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

[0291] Optionally, the handover request carries a measurement report.

[0292] It should be noted that the device applies the above-mentioned switching method executed by the user equipment, and the implementation method of the above-mentioned method embodiment is applicable to the device and can also achieve the same technical effect.

[0293] like Fig.10 As shown, an embodiment of the present invention provides a switching device, comprising:

[0294] The receiving module 1010 is used to receive the current location information of the user equipment;

[0295] The third processing module 1020 is configured to perform one of the following steps according to the current location information:

[0296] Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or,

[0297] Send all beam information of the first satellite.

[0298] Optionally, the handover related information includes at least one of the following:

[0299] Frequency information;

[0300] Beam information;

[0301] Community information.

[0302] Optionally, the first time delay is the duration between the first moment and the second moment;

[0303] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0304] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0305] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0306] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0307] It should be noted that the device applies the above-mentioned switching method executed by the satellite, and the implementation method of the above-mentioned method embodiment is applicable to the device and can also achieve the same technical effect.

[0308] A user equipment according to an embodiment of the present invention includes a processor, wherein the processor is configured to:

[0309] Acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching;

[0310] When the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, determining a first target satellite frequency point according to the switching related information;

[0311] A switching request is sent according to the first target satellite frequency.

[0312] Optionally, the handover related information includes at least one of the following:

[0313] Frequency information;

[0314] Beam information;

[0315] Community information.

[0316] Optionally, the user equipment further includes a transceiver, and the transceiver is used to:

[0317] Sending the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0318] receiving the first time delay and the switching related information sent by the second satellite.

[0319] Optionally, the processor is further configured to determine a first delay under the target beam according to beam information in a satellite broadcast message;

[0320] The processor is further configured to determine the first satellite according to the ephemeris information and the first time delay;

[0321] The transceiver is further used to send the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected;

[0322] The transceiver is also used to receive all beam information of the first satellite sent by the second satellite;

[0323] The processor is further configured to obtain the switching related information according to all beam information of the first satellite.

[0324] Optionally, the first time delay is the duration between the first moment and the second moment;

[0325] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0326] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0327] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0328] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0329] Optionally, the switching condition is that the second delay is greater than the difference between the first delay and a preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite.

[0330] Optionally, the processor is further configured to

[0331] Performing measurement based on the handover related information and selecting a first target satellite frequency point;

[0332] Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

[0333] Optionally, the transceiver is further used for:

[0334] When the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, sending a measurement request application to a third satellite, where the third satellite is the currently connected satellite;

[0335] receiving a measurement request sent by the third satellite, where the measurement request carries satellite information to be measured;

[0336] The processor is further configured to:

[0337] Determining a second target satellite frequency point according to the satellite information to be measured;

[0338] A switching request is sent according to the second target satellite frequency.

[0339] Optionally, the processor is further configured to:

[0340] Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point;

[0341] The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

[0342] Optionally, the handover request carries a measurement report.

[0343] The user equipment of this embodiment can obtain the first delay under the corresponding beam (i.e., the target beam) for the connected cell (e.g., the initial access cell or the access cell after handover) or the cell to be connected (e.g., the cell to be initially accessed), and obtain the handover related information of the first satellite (i.e., the satellite available for handover). Afterwards, when the signal strength of the cell currently connected to the user equipment is less than the preset threshold and the first satellite meets the handover condition, the first target satellite frequency is further determined according to the obtained handover related information, thereby sending a handover request and completing the handover of satellite communication, which can reduce the signaling interaction between the user equipment and the satellite and improve the handover efficiency.

[0344] A satellite according to an embodiment of the present invention includes: a transceiver and a processor.

[0345] The transceiver is used to receive current location information of the user equipment;

[0346] The processor is configured to perform one of the following steps according to the current location information:

[0347] Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or,

[0348] Send all beam information of the first satellite.

[0349] Optionally, the handover related information includes at least one of the following:

[0350] Frequency information;

[0351] Beam information;

[0352] Community information.

[0353] Optionally, the first time delay is the duration between the first moment and the second moment;

[0354] The first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area.

[0355] Optionally, the user equipment coverage area is determined by current location information and reference location information of the user equipment.

[0356] Optionally, the first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

[0357] Optionally, the beam indicated by the beam information is the beam of the satellite currently connected to the user equipment; or, is the beam with the maximum delay.

[0358] A user equipment according to another embodiment of the present invention, such as Fig.11 As shown, it includes a transceiver 1110, a processor 1100, a memory 1120, and a program or instruction stored in the memory 1120 and executable on the processor 1100; when the processor 1100 executes the program or instruction, the switching method performed by the user equipment is implemented.

[0359] The transceiver 1110 is used to receive and send data under the control of the processor 1100 .

[0360] Among them, Fig.11 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1110 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 1130 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0361] The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 when performing operations.

[0362] A satellite according to another embodiment of the present invention, such as Fig.12 As shown, it includes a transceiver 1210, a processor 1200, a memory 1220, and a program or instruction stored in the memory 1220 and executable on the processor 1200; when the processor 1200 executes the program or instruction, the switching method executed by the satellite is implemented.

[0363] The transceiver 1210 is used to receive and send data under the control of the processor 1200 .

[0364] Among them, Fig.12 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1210 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 when performing operations.

[0365] A readable storage medium according to an embodiment of the present invention stores a program or instruction thereon. When the program or instruction is executed by a processor, the steps in the switching method described above are implemented and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0366] The processor is a processor in the user equipment or satellite described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0367] It should be further explained that the user devices described in this specification include but are not limited to smart phones, tablet computers, etc., and many of the functional components described are called modules in order to more particularly emphasize the independence of their implementation methods.

[0368] In the embodiment of the present invention, module can be implemented with software so that it can be executed by various types of processors. For example, an executable code module of an identification can include one or more physical or logical blocks of computer instructions, for example, it can be constructed as an object, process or function. Nevertheless, the executable code of the identified module does not need to be physically located together, but can include different instructions stored in different positions, and when these instructions are logically combined together, it constitutes a module and realizes the specified purpose of the module.

[0369] In fact, executable code module can be a single instruction or many instructions, and can even be distributed on a plurality of different code segments, distributed among different programs, and distributed across a plurality of memory devices. Similarly, operating data can be identified in the module, and can be implemented and organized in the data structure of any appropriate type according to any appropriate form. The operating data can be collected as a single data set, or can be distributed in different locations (including on different storage devices), and can only be present on a system or network as an electronic signal at least in part.

[0370] When a module can be implemented by software, considering the level of existing hardware technology, a person skilled in the art can build a corresponding hardware circuit to implement the corresponding function of the module that can be implemented by software without considering the cost. The hardware circuit includes a conventional very large scale integration (VLSI) circuit or gate array and existing semiconductors such as logic chips, transistors, or other discrete components. The module can also be implemented by a programmable hardware device, such as a field programmable gate array, a programmable array logic, a programmable logic device, etc.

[0371] The above exemplary embodiments are described with reference to the accompanying drawings, and many different forms and embodiments are feasible without departing from the spirit and teachings of the present invention. Therefore, the present invention should not be constructed as a limitation of the exemplary embodiments proposed herein. More specifically, these exemplary embodiments are provided so that the present invention will be perfect and complete, and the scope of the present invention will be conveyed to those who are familiar with the technology. In these figures, the component sizes and relative sizes may be exaggerated for clarity. The terms used here are only based on the purpose of describing specific exemplary embodiments and are not intended to be limiting. As used herein, unless the text clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to include these multiple forms. It will be further understood that the terms "including" and / or "comprising" when used in this specification indicate the presence of the features, integers, steps, operations, components and / or components, but do not exclude the presence or increase of one or more other features, integers, steps, operations, components, components and / or their groups. Unless otherwise indicated, when stated, a range of values ​​includes the upper and lower limits of that range and any subranges therebetween.

[0372] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A switching method, characterized in that: Executed by the user device, including: Acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; When the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, determining a first target satellite frequency point according to the switching related information; Sending a switching request according to the first target satellite frequency; The switching condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite; The first time delay is the duration between the first moment and the second moment; wherein the first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area; The second delay is the length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the moment when there is a switching demand.

2. The method according to claim 1, characterized in that The handover related information includes at least one of the following: Frequency information; Beam information; Community information.

3. The method according to claim 1, characterized in that The acquiring the first time delay under the target beam and the switching related information of the first satellite includes: Sending the current location information of the user equipment to a second satellite, where the second satellite is a satellite that is currently connected or to be connected; receiving the first time delay and the switching related information sent by the second satellite.

4. The method according to claim 1, characterized in that: The acquiring the first time delay under the target beam and the switching related information of the first satellite includes: Determining a first delay under the target beam according to beam information in the satellite broadcast message; Determining the first satellite according to the ephemeris information and the first time delay; Sending the current location information of the user equipment and the identity information of the first satellite to a second satellite, where the second satellite is a satellite that is currently connected or to be connected; receiving all beam information of the first satellite sent by the second satellite; The switching related information is obtained according to all beam information of the first satellite.

5. The method according to claim 1, characterized in that: The user equipment coverage area is determined by the current location information and reference location information of the user equipment.

6. The method according to claim 1, characterized in that The first satellite is a satellite whose beam coverage area covers the user equipment coverage area at the second moment.

7. The method according to claim 2, characterized in that: The beam indicated by the beam information is a beam of a satellite currently connected to the user equipment; or, is a beam with a maximum delay.

8. The method according to claim 1, characterized in that: The determining, according to the switching related information, a first target satellite frequency point includes: Performing measurement based on the handover related information and selecting a first target satellite frequency point; Among them, the first target satellite frequency point has a signal greater than the preset threshold, and the duration is greater than the preset duration.

9. The method according to claim 1, characterized in that: Also includes: When the signal strength of the currently connected cell is less than a preset threshold but the first satellite does not meet the switching condition, sending a measurement request application to a third satellite, where the third satellite is the currently connected satellite; receiving a measurement request sent by the third satellite, where the measurement request carries satellite information to be measured; Determining a second target satellite frequency point according to the satellite information to be measured; A switching request is sent according to the second target satellite frequency.

10. The method according to claim 9, characterized in that The determining, according to the satellite information to be measured, a second target satellite frequency point comprises: Performing measurement based on the satellite information to be measured, and selecting a second target satellite frequency point; The satellite corresponding to the second target satellite frequency satisfies the switching condition, and the second target satellite frequency has a signal greater than the preset threshold and lasts for a duration greater than the preset duration.

11. The method according to claim 8 or 10, characterized in that: The handover request carries a measurement report.

12. A switching method, characterized in that: Performed by satellite, including: Receiving current location information of a user device; According to the current location information, perform one of the following steps: Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or, Sending all beam information of the first satellite, where the all beam information is used to obtain the switching related information; The handover related information is used to determine the first target satellite frequency point to send a handover request when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the handover condition; The switching condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite; The first time delay is the duration between the first moment and the second moment; wherein the first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area; The second delay is the length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the moment when there is a switching demand.

13. The method according to claim 12, characterized in that The handover related information includes at least one of the following: Frequency information; Beam information; Community information.

14. A switching device, characterized in that: include: An acquisition module is used to acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; A first processing module, configured to determine a first target satellite frequency point according to the switching related information when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition; A second processing module, configured to send a switching request according to the first target satellite frequency; The switching condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite; The first time delay is the duration between the first moment and the second moment; wherein the first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area; The second delay is the length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the moment when there is a switching demand.

15. A switching device, characterized in that: include: A receiving module, used to receive current location information of a user device; The third processing module is configured to perform one of the following steps according to the current location information: Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or, Sending all beam information of the first satellite, where the all beam information is used to obtain the switching related information; The handover related information is used to determine the first target satellite frequency point to send a handover request when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the handover condition; The switching condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite; The first time delay is the duration between the first moment and the second moment; wherein the first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area; The second delay is the length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the moment when there is a switching demand.

16. A user equipment, characterized in that: comprising a processor configured to: Acquire a first delay under a target beam and switching related information of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; When the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the switching condition, determining a first target satellite frequency point according to the switching related information; Sending a handover request according to the first target satellite frequency, wherein the handover condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite; The first time delay is the duration between the first moment and the second moment; wherein the first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area; The second delay is the length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the moment when there is a switching demand.

17. A satellite, characterized in that: include: transceivers and processors, The transceiver is used to receive current location information of the user equipment; The processor is configured to perform one of the following steps according to the current location information: Sending a first delay under a target beam and information related to switching of a first satellite; wherein the target beam is a beam corresponding to a connected or to-be-connected cell, and the first satellite is a satellite available for switching; or, Sending all beam information of the first satellite, where the all beam information is used to obtain the switching related information; The handover related information is used to determine the first target satellite frequency point to send a handover request when the signal strength of the currently connected cell is less than a preset threshold and the first satellite meets the handover condition; The switching condition is that the second delay is greater than the difference between the first delay and the preset offset, and the current location of the user equipment is in the coverage area of ​​the first satellite; The first time delay is the duration between the first moment and the second moment; wherein the first moment is the current moment, and the second moment is the moment when the user equipment coverage area is at the edge of the target beam coverage area; The second delay is the length of time that the user equipment can be in the coverage area of ​​the corresponding beam starting from the moment when there is a switching demand.

18. A user equipment, comprising: A transceiver, a processor, a memory, and a program or instruction stored in the memory and executable on the processor; wherein the processor implements the switching method according to any one of claims 1 to 11 when executing the program or instruction.

19. A satellite, comprising: A transceiver, a processor, a memory, and a program or instruction stored in the memory and executable on the processor; wherein the processor implements the switching method as claimed in claim 12 or 13 when executing the program or instruction.

20. A readable storage medium having a program or instruction stored thereon, characterized in that: When the program or instruction is executed by the processor, the switching method according to any one of claims 1 to 11 or the switching method according to claim 12 or 13 is implemented.

Images