Beam switching method, terminal and network side equipment

Abstract

A beam switching method, terminal, and network-side device are disclosed. When applied to a network-side device, the method comprises: transmitting satellite beam list configuration information to the terminal, the beam list configuration information including the beam index of the satellite's transmit beam. The beam switching method, terminal, and network-side device provided by the present invention achieve rapid beam switching without relying on user beam measurement reporting results, simplifying the beam switching management process, reducing latency, and ensuring reliable data reception.

Description

Technical Field

[0001] The present invention relates to the field of mobile communication technology, and in particular to a beam switching method, a terminal, and a network-side device. Background Art

[0002] The beam management process in traditional terrestrial communication networks primarily includes: beam selection, beam measurement, beam reporting, beam switching, beam indication, and beam recovery. Beam selection refers to the process by which the base station and the terminal select the appropriate transmit and receive beam pair during the initial connection establishment process to ensure optimal link transmission performance. Beam measurement and beam reporting are the processes by which the terminal measures multiple transmit and receive beams and reports the beam quality after establishing a wireless link connection. Beam switching refers to the process of switching to a higher-quality transmit and receive beam pair when the quality of the original transmit and receive beam pair deteriorates. The base station uses downlink control signaling through the beam indication process to indicate beam information to the terminal for reception and switching. Beam recovery is the process of reestablishing the connection between the base station and the terminal when it detects that all beams cannot meet the link transmission requirements. For beam switching, the terminal performs beam quality measurement based on the beam management reference signal, such as the synchronization signal block (Synchronization Signal and PBCH block, SSB) or the channel state information reference signal (CSI-RS), and reports the measurement results; the base station determines the beam switching based on the terminal beam reporting result and indicates the switching beam information to the terminal.

[0003] In satellite multi-beam scenarios, there are two schemes for mapping beams to physical cell IDs: 1) Multiple beams correspond to the same physical cell ID. In this case, beam switching is equivalent to handover within the same cell, and the terminal does not need to perform random access, only synchronization is required. 2) One beam corresponds to one PCI. In this case, beam switching requires the terminal to perform a random access procedure. The physical cell ID can specifically be a physical cell identifier (PCI).

[0004] Non-geosynchronous satellites orbit at lower altitudes than synchronous satellites and operate at higher speeds, resulting in ground terminals only being able to see the satellites for a few minutes to a dozen minutes. To ensure service continuity, terminals must frequently switch beams within or between satellites. Furthermore, with the advancement of satellite communication technology, low-orbit satellites have gradually begun using multi-beam antennas to reuse frequency resources and increase system capacity. However, this also results in intra-satellite beam switching occurring more frequently than inter-satellite beam switching.

[0005] At the same time, the high-speed mobility of low-orbit satellites also poses challenges to the effectiveness of terminal measurements. Furthermore, since transmission between the terminal and the satellite is essentially line-of-sight, the satellite signal changes relatively slowly from the cell / beam center to the cell / beam edge. If measurement thresholds are still used to trigger handover, a ping-pong effect will occur in non-terrestrial networks. Furthermore, unlike traditional terrestrial communications, satellite trajectories are predictable, and auxiliary information such as satellite ephemeris can simplify the beam switching process in satellite networks. New Radio (NR) systems use co-frequency beam switching, but when satellite communications use frequency reuse factors, adjacent beams are not co-frequency. In this case, NR's beam management solution cannot be directly applied to satellite-ground fusion systems. Therefore, there is an urgent need for a beam switching method that can adapt to satellite-ground systems and simplify satellite beam switching. Summary of the Invention

[0006] At least one embodiment of the present invention provides a beam switching method, terminal, and network-side equipment, which can implement rapid beam management in a satellite-ground fusion system.

[0007] According to one aspect of the present invention, at least one embodiment provides a beam switching method, applied to a network-side device, including:

[0008] Sending satellite beam list configuration information to a terminal, where the beam list configuration information includes a beam index of a transmission beam of the satellite.

[0009] In addition, according to at least one embodiment of the present invention, the beam list configuration information further includes: a partial bandwidth BWP corresponding to the transmitting beam, and / or a cell identifier corresponding to the transmitting beam.

[0010] Furthermore, according to at least one embodiment of the present invention, the present invention further comprises:

[0011] The beam movement information of the satellite is broadcast periodically, wherein the beam movement information includes the beam movement direction, the beam movement speed and the beam coverage radius.

[0012] Furthermore, according to at least one embodiment of the present invention, the beam index is represented by an index of a reference signal for beam management.

[0013] According to another aspect of the present invention, at least one embodiment provides a beam switching method, applied to a terminal, including:

[0014] Receiving beam list configuration information of a satellite sent by a network, the beam list configuration information including a beam index of a transmit beam of the satellite;

[0015] The receiving beam is switched using the beam list configuration information.

[0016] Furthermore, according to at least one embodiment of the present invention, the switching of the receive beam using the beam list configuration information includes:

[0017] Calculating the remaining visible time of the satellite's current first transmit beam based on the terminal's own position and the satellite's beam movement information, and determining a beam switching time within the satellite, wherein the beam movement information includes a beam movement direction, a beam operating speed, and a beam coverage radius;

[0018] The second transmitting beam of the satellite after switching is determined according to the beam list configuration information, and when the beam switching time arrives, the receiving beam corresponding to the second transmitting beam is used to receive the data sent by the satellite through the second transmitting beam.

[0019] In addition, according to at least one embodiment of the present invention, the beam list configuration information further includes: a partial bandwidth BWP corresponding to the transmitting beam, and / or a cell identifier corresponding to the transmitting beam.

[0020] Furthermore, according to at least one embodiment of the present invention, the present invention further comprises:

[0021] receiving beam movement information of the satellite periodically broadcast by a network;

[0022] or,

[0023] According to the satellite operation ephemeris, the beam movement direction and beam operation speed of the satellite are obtained, and the information of the beam coverage radius of the satellite periodically broadcast by the receiving network is received.

[0024] Furthermore, according to at least one embodiment of the present invention, the beam index is represented by an index of a reference signal for beam management.

[0025] According to another aspect of the present invention, at least one embodiment provides a beam switching method, applied to a network-side device, including:

[0026] Calculating, according to satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information, a beam switching time at which the satellite switches the first transmit beam to a second transmit beam;

[0027] Before the beam switching moment arrives, beam configuration information of the second transmit beam is sent to the terminal through the first transmit beam, where the beam configuration information includes a beam index of the second transmit beam.

[0028] In addition, according to at least one embodiment of the present invention, the beam configuration information also includes: a quasi-co-site QCL type corresponding to the second transmitting beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmitting beam.

[0029] Furthermore, according to at least one embodiment of the present invention, the present invention further comprises:

[0030] Before the beam switching moment arrives, a beam switching preparation time is sent to the terminal via the first transmit beam.

[0031] Furthermore, according to at least one embodiment of the present invention, the present invention further comprises:

[0032] The network side device determines the sending time of the beam configuration information and sends the beam configuration information according to the pre-set beam switching preparation time required for the terminal to perform beam switching.

[0033] According to another aspect of the present invention, at least one embodiment provides a beam switching method, applied to a terminal, including:

[0034] receiving beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the transmit beam of the satellite serving the terminal is to be switched;

[0035] The data transmitted by the satellite through the second transmitting beam is received by using a receiving beam corresponding to the second transmitting beam.

[0036] Furthermore, according to at least one embodiment of the present invention, the present invention further comprises:

[0037] The location information and terminal mobility information of the terminal are sent to the network, where the terminal mobility information includes terminal movement speed information and movement direction information.

[0038] In addition, according to at least one embodiment of the present invention, the beam configuration information also includes: the QCL type corresponding to the second transmitting beam and first information, wherein the QCL type is type D, and the first information includes at least one of the BWP and cell identifier corresponding to the second transmitting beam.

[0039] Furthermore, according to at least one embodiment of the present invention, the present invention further comprises:

[0040] receiving a beam switching preparation time sent by the satellite through the first transmit beam before the beam switching moment arrives; determining a start time based on the beam switching preparation time, performing beam switching from the start time, and switching the receive beam of the terminal to the receive beam corresponding to the second transmit beam;

[0041] or,

[0042] After receiving the beam configuration information, the terminal performs beam switching within a preset beam switching preparation time, and switches the receiving beam of the terminal to a receiving beam corresponding to the second transmitting beam.

[0043] According to another aspect of the present invention, at least one embodiment provides a network side device, including a transceiver and a processor, wherein:

[0044] The transceiver is configured to send satellite beam list configuration information to a terminal, where the beam list configuration information includes a beam index of a transmission beam of the satellite.

[0045] According to another aspect of the present invention, at least one embodiment provides a network side device, including a transceiver and a processor, wherein:

[0046] The processor is configured to calculate, based on satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information, a beam switching time at which the satellite switches the first transmit beam to a second transmit beam;

[0047] The transceiver is configured to send beam configuration information of the second transmit beam to the terminal through the first transmit beam before the beam switching moment arrives, where the beam configuration information includes a beam index of the second transmit beam.

[0048] According to another aspect of the present invention, at least one embodiment provides a network side device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program implements the steps of the above-described method when executed by the processor.

[0049] According to another aspect of the present invention, at least one embodiment provides a terminal including a transceiver and a processor, wherein:

[0050] The transceiver is configured to receive beam list configuration information of a satellite sent by a network, wherein the beam list configuration information includes a beam index of a transmit beam of the satellite;

[0051] The processor is configured to switch a receiving beam by using the beam list configuration information.

[0052] According to another aspect of the present invention, at least one embodiment provides a terminal including a transceiver and a processor, wherein:

[0053] The transceiver is configured to receive beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the satellite's transmit beam serving the terminal is to switch;

[0054] The processor is configured to receive data sent by the satellite through the second transmitting beam using a receiving beam corresponding to the second transmitting beam.

[0055] According to another aspect of the present invention, at least one embodiment provides a terminal including: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program implements the steps of the above-described method when executed by the processor.

[0056] According to another aspect of the present invention, at least one embodiment provides a computer-readable storage medium having a program stored thereon. When the program is executed by a processor, the steps of the method described above are implemented.

[0057] Compared with the existing technology, the beam switching method, terminal and network-side equipment provided by the embodiments of the present invention can achieve fast beam switching without relying on the user's beam measurement reporting results, simplify the beam switching management process, reduce latency, and ensure the reliability of data reception. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0059] Figure 1 This is a flow chart of a beam switching method according to an embodiment of the present invention when applied to a network side;

[0060] Figure 2 This is a flow chart of a beam switching method according to an embodiment of the present invention when applied to a terminal side;

[0061] Figure 3 This is an example diagram of an application scenario of the beam switching method according to an embodiment of the present invention;

[0062] Figure 4 This is a flow chart of a beam switching method according to another embodiment of the present invention when applied to a network side;

[0063] Figure 5 This is a flow chart of a beam switching method according to another embodiment of the present invention when applied to a terminal side;

[0064] Figure 6 A schematic diagram of the structure of a network side device provided in one embodiment of the present invention;

[0065] Figure 7 Another structural diagram of a network-side device provided in one embodiment of the present invention;

[0066] Figure 8 A schematic structural diagram of a terminal provided by one embodiment of the present invention;

[0067] Figure 9 Another structural diagram of a terminal provided by an embodiment of the present invention;

[0068] Figure 10 A schematic diagram of the structure of a network side device provided in one embodiment of the present invention;

[0069] Figure 11 Another structural diagram of a network-side device provided in one embodiment of the present invention;

[0070] Figure 12 A schematic structural diagram of a terminal provided in another embodiment of the present invention;

[0071] Figure 13 Another structural diagram of a terminal provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0072] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0073] The terms "first", "second" etc. in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable in appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprise" and "have" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or that are intrinsic to these processes, methods, products or equipment. "And / or" in the specification and claims represents at least one of the connected objects.

[0074] The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the spirit and scope of this disclosure. The various examples may appropriately omit, substitute, or add various procedures or components. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0075] In the beam management scheme of the existing technology, the base station needs to determine the beam switching based on the beam measurement reporting information of the terminal; however, in the satellite-ground fusion system, especially the non-geosynchronous satellite system, the fast satellite operation speed leads to frequent beam switching. The terminal may cause the beam information to be invalid after measuring the beam and then reporting it.

[0076] Furthermore, unlike traditional terrestrial communications, satellite systems provide ephemeris information, which can be used to simplify beam management. Satellite ephemeris is a representation of the position and velocity of a spacecraft, typically in the form of a two-line orbital data system. Using satellite ephemeris, the time, position, velocity, and other operational status of a spacecraft can be accurately calculated, predicted, mapped, and tracked.

[0077] The beam switching method provided by the embodiment of the present invention can achieve fast intra-satellite beam switching without relying on the beam measurement reporting results of the user, simplify the beam switching management process, and reduce latency.

[0078] The beam switching method provided in the embodiment of the present invention is mainly used for beam switching within a satellite. By simplifying the beam switching process, it can realize fast beam management in the satellite-ground fusion system. Figure 1 A beam switching method provided by an embodiment of the present invention is applied to a network side device, which can be located on the ground and / or on a satellite, and specifically can be at least one of a satellite, a ground base station and a core network device.

[0079] like Figure 1 As shown, the method includes:

[0080] In step 11, the network side device sends the satellite's beam list configuration information to the terminal, where the beam list configuration information includes the beam index of the satellite's transmission beam.

[0081] Typically, the beam list configuration information in step 11 may be sent to the terminal via a satellite. The beam index of the satellite's transmit beam may be specifically represented by an index of a reference signal used for beam management, where the reference signal includes an SSB and a CSI-RS.

[0082] Through the above steps, the embodiment of the present invention notifies the terminal of the beam index of the satellite's transmit beam. In this way, when the terminal performs beam switching within the satellite, it can determine the transmit beam of the switched satellite based on the beam list configuration information, and then use the receive beam corresponding to the transmit beam of the switched satellite to receive data, thereby ensuring the reliability of data transmission and realizing rapid beam management in the satellite-ground fusion system.

[0083] Optionally, in an embodiment of the present invention, the beam list configuration information may further include: a partial bandwidth (BWP) corresponding to the transmit beam, and / or a cell identifier (such as a PCI) corresponding to the transmit beam. This information may help the terminal better receive data transmitted by the satellite.

[0084] In this embodiment of the present invention, the network-side device also periodically broadcasts the satellite's beam movement information, including the beam movement direction, beam speed, and beam coverage radius. This information can help the terminal better determine information such as the timing of beam switching and the target beam to be switched. Optionally, the network-side device may also periodically broadcast the satellite's beam coverage radius, while the terminal can obtain information such as the satellite's beam movement direction and beam speed from the satellite's operating ephemeris.

[0085] and Figure 1 For the corresponding method, please refer to Figure 2 , an embodiment of the present invention provides a beam switching method, which, when applied to a terminal side, includes:

[0086] Step 21: Receive beam list configuration information of a satellite sent by a network, where the beam list configuration information includes a beam index of a transmission beam of the satellite.

[0087] Here, the beam index of the satellite's transmit beam can be specifically represented by the index of a reference signal used for beam management, where the reference signal includes SSB and CSI-RS, etc.

[0088] Step 22: Use the beam list configuration information to switch the receiving beam.

[0089] Here, the terminal can determine the remaining visible time of the satellite's current first transmitting beam, determine the beam switching time within the satellite, and then determine the second transmitting beam of the satellite after switching based on the beam list configuration information, and when the beam switching time arrives, use the receiving beam corresponding to the second transmitting beam to receive the data sent by the satellite through the second transmitting beam.

[0090] For example, the terminal can calculate the remaining visible time of the satellite's current first transmitting beam based on the terminal's own position and the satellite's beam movement information, and then determine the beam switching time within the satellite, wherein the beam movement information includes the beam movement direction, beam operation speed and beam coverage radius.

[0091] Here, the visible remaining time indicates the remaining time that the current first transmission beam can provide data transmission for the terminal. After the visible remaining time, the transmission beam covering the terminal will be transformed into another transmission beam of the satellite (referred to as the second transmission beam here), and the terminal needs to switch its receiving beam to receive the data sent by the satellite on the target transmission beam. The method of calculating the visible remaining time can usually be calculated based on the terminal's own position, its own moving speed and moving direction, and beam movement information. The specific algorithm can refer to various calculation algorithms in the prior art, and the embodiment of the present invention does not specifically limit this. The beam movement information can be obtained from the satellite operating ephemeris and / or from the information sent by the network side device.

[0092] Given that beam switching requires a certain amount of time, the terminal can determine a beam switching moment based on the switching preparation time and begin beam switching at this beam switching moment. Typically, the duration between the beam switching moment and the end of the remaining visible time must be at least the beam switching preparation time. This allows the terminal to complete beam switching before the end of the remaining visible time.

[0093] Here, the terminal can determine the second transmission beam of the satellite after switching based on the beam index in the beam list configuration information, that is, after the terminal moves out of the coverage area of ​​the first transmission beam of the satellite, the terminal is within the coverage area of ​​the second transmission beam of the satellite. Then, when the beam switching moment arrives, the terminal switches the receiving beam, switching the current receiving beam corresponding to the first transmission beam to the receiving beam corresponding to the second transmission beam. After the beam switching is completed, the terminal uses the receiving beam corresponding to the second transmission beam to receive the data sent by the satellite through the second transmission beam.

[0094] Through the above steps, the embodiment of the present invention can help the terminal determine the satellite transmitting beam after switching through the beam list configuration information, so that the terminal can select a suitable receiving beam corresponding to the satellite transmitting beam after switching for data reception, simplifying the satellite beam management and ensuring the reliability of data transmission.

[0095] Optionally, the beam list configuration information sent by the network-side device may further include: the BWP corresponding to the transmit beam, and / or the cell identifier corresponding to the transmit beam. The terminal may determine the BWP corresponding to the second transmit beam based on the BWP corresponding to the transmit beam, and / or determine the cell identifier corresponding to the second transmit beam based on the cell identifier corresponding to the transmit beam, and may then receive data sent on the second transmit beam based on the BWP corresponding to the second transmit beam and / or the cell identifier corresponding to the second transmit beam.

[0096] In an embodiment of the present invention, the network side can send the beam movement information of the satellite to the terminal, and the terminal can also receive the beam movement information of the satellite periodically broadcast by the network, so that the visible remaining time of the first transmitted beam can be calculated based on the obtained beam movement information.

[0097] As another implementation, the terminal can obtain the satellite's beam movement direction and beam movement speed based on the satellite's operating ephemeris, and receive information about the satellite's beam coverage radius periodically broadcast by the network, thereby obtaining the satellite's beam coverage radius. The terminal can then calculate the remaining visible time of the first transmitted beam based on the obtained beam movement information.

[0098] Below is Figure 3 The application scenario shown is used as an example to illustrate the method flow of the embodiment of the present invention.

[0099] Please refer to Figure 3 , an example diagram of intra-satellite beam switching is given, where each small ellipse represents the coverage area of ​​a satellite's transmit beam, and each coverage area can be considered a cell. PCI i represents the cell identifier (cell ID), BWP i represents partial bandwidth transmission, and SSB i represents the transmit beam index through a reference signal. Cells with the same fill pattern can use transmit beams in the same frequency band (frequency reuse), that is, the BWP can be the same. To simplify the calculation, it is assumed that the coverage radius of each beam is r, the terminal is stationary and the terminal position is d (the distance of the terminal relative to the beam center as the reference origin), and the satellite's operating speed is v.

[0100] exist Figure 3 In the scenario shown, the process of implementing the embodiment of the present invention is as follows:

[0101] 1) The network device sends the following beam list configuration information: [PCI1, BWP1, SSB1; PCI2, BWP2, SSB1; PCI2, BWP1, SSB2], and the terminal's current serving beam is [PCI2, BWP1, SSB2]. Each set of PCI, BWP, and SSB represents the parameters of a transmit beam, representing the cell identifier, BWP, and beam index corresponding to the transmit beam, respectively.

[0102] 2) The terminal calculates the remaining visible time of the current serving cell based on the acquired satellite ephemeris information, for example, t1 = (rd) / v (this is a simplified calculation, assuming that the terminal is located in the direction where the satellite trajectory passes through the beam origin).

[0103] 3) The terminal selects a suitable receiving beam after t1 based on the calculation result t1 and the beam list configuration information of the network configuration, and receives the data sent by the network side through the transmitting beam [PCI2, BWP2, SSB1].

[0104] Please refer to Figure 4 Another embodiment of the present invention provides a beam switching method, which is applied to a network side device. The network side device can be located on the ground and / or on a satellite, and can specifically be at least one of a satellite, a ground base station, and a core network device. Figure 4 As shown, the method includes:

[0105] In step 41, the network-side device calculates the beam switching time when the satellite switches the first transmit beam to the second transmit beam based on the satellite operating ephemeris, the first transmit beam currently served by the satellite for the terminal, the location information reported by the terminal, and the terminal mobility information.

[0106] Unlike the previous embodiment, in this embodiment, the network-side device calculates the terminal's beam switching time. Specifically, the network-side device can calculate the beam switching time at which the satellite switches from the first transmit beam to the second transmit beam based on the satellite's operating ephemeris, the first transmit beam currently serving the terminal by the satellite, the terminal's reported location information, and the terminal's mobility information. The terminal's mobility information includes parameters such as the terminal's motion speed and direction.

[0107] Step 42: Before the beam switching moment arrives, beam configuration information of the second transmit beam is sent to the terminal through the first transmit beam, where the beam configuration information includes a beam index of the second transmit beam.

[0108] Here, the beam configuration information may specifically be transmission configuration indicator (TCI) status indication information. The beam index may be represented by an index of a reference signal used for beam management.

[0109] Through the above steps, the network-side device sends the beam configuration information of the second transmit beam to the terminal before the beam switching moment arrives. In this way, the terminal can determine the switched second transmit beam based on the beam configuration information and perform beam switching. Therefore, when the beam switching moment arrives, the receive beam corresponding to the second transmit beam can be used to receive data, thereby ensuring the reliability of data transmission and realizing rapid beam management in the satellite-ground fusion system.

[0110] Optionally, the beam configuration information may further include: a quasi-co-location (QCL) type corresponding to the second transmit beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmit beam. This information can help the terminal better receive data sent by the satellite.

[0111] In an embodiment of the present invention, the network side device may further receive the location information and terminal mobility information of the terminal sent by the terminal, so as to calculate the beam switching time according to the above information in step 41.

[0112] As an implementation method, the network side device can also send a beam switching preparation time to the terminal through the first transmitting beam before the beam switching moment arrives, so that the terminal can prepare for beam switching according to the beam switching preparation time, and thus can use the receiving beam corresponding to the second transmitting beam to receive data at the beam switching moment.

[0113] As another implementation, a beam switching preparation time may be pre-set on the network and terminal sides. For example, the time may be pre-configured on the network and terminal sides. In this way, the network device may determine the time to send the beam configuration information in step 42 based on the pre-set beam switching preparation time required for the terminal to perform beam switching, and send the beam configuration information when the time arrives, thereby ensuring that the terminal has sufficient time to prepare for beam switching after receiving the beam configuration information.

[0114] and Figure 4 For the corresponding method, please refer to Figure 5 Another embodiment of the present invention provides a beam switching method, which, when applied to a terminal side, includes:

[0115] Step 51: Receive beam configuration information sent by the network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the satellite's transmit beam serving the terminal is to switch.

[0116] Here, the satellite currently serving the terminal is a first transmit beam, and the beam configuration information indicates a target transmit beam to which the satellite's transmit beam serving the terminal is to be switched, i.e., a beam index of a second transmit beam. Here, the beam configuration information may specifically be TCI state indication information. The beam index may be represented by an index of a reference signal used for beam management.

[0117] Step 52: Receive the data transmitted by the satellite through the second transmitting beam by using the receiving beam corresponding to the second transmitting beam.

[0118] Through the above steps, the embodiment of the present invention can indicate to the terminal information such as the beam index of the second transmitting beam after switching, so that the terminal can use the receiving beam corresponding to the second transmitting beam to receive data, thereby ensuring the reliability of data transmission and simplifying the rapid beam management in the satellite-ground fusion system.

[0119] In an embodiment of the present invention, the terminal can also send the terminal's location information and terminal mobility information to the network, so that the network side device can calculate the beam switching time based on the above information, and then send the beam configuration information described in step 51 to the terminal before the beam switching time arrives.

[0120] Optionally, the beam configuration information further includes: a QCL type corresponding to the second transmit beam and first information, where the QCL type is type D, and the first information includes at least one of a BWP corresponding to the second transmit beam and a cell identifier. In this way, the terminal can receive data sent on the second transmit beam based on the BWP corresponding to the second transmit beam and / or the cell identifier corresponding to the second transmit beam.

[0121] As an implementation method, the terminal can also receive the beam switching preparation time sent by the satellite through the first transmitting beam before the beam switching moment arrives; then, based on the beam switching preparation time, a start time is determined, and beam switching is performed from the start time to switch the terminal's receiving beam to a receiving beam corresponding to the second transmitting beam.

[0122] As another implementation method, a beam switching preparation time can also be pre-set on the network side and the terminal side. At this time, after receiving the beam configuration information in step 51, the terminal performs beam switching within the pre-set beam switching preparation time, and switches the terminal's receiving beam to a receiving beam corresponding to the second transmitting beam.

[0123] Below is still Figure 3 Taking the application scenario shown in the figure as an example, the process of implementing the embodiment of the present invention is as follows:

[0124] 1) Assume that the terminal's current serving beam is [PCI2, BWP1, SSB2];

[0125] 2) The network side calculates the beam switching time t2 of the transmission beam based on the satellite operation ephemeris information, the location information reported by the terminal, and the terminal's mobility information;

[0126] 3) Before the beam switching time t2 arrives, the network side sends the TCI status information [PCI2, BWP2, SSB1, QCL-type D] through the current transmit beam [PCI2, BWP1, SSB2].

[0127] 4) The terminal selects an appropriate receiving beam based on the TCI status indication information to receive data sent by the network side through beams [PCI2, BWP2, SSB1].

[0128] It can be seen from the above steps that the above embodiments of the present invention can achieve fast intra-satellite beam switching without relying on the user's beam measurement reporting results, simplify the beam switching management process, and reduce latency.

[0129] The above describes various methods of the embodiments of the present invention. The following further provides apparatuses for implementing the above methods.

[0130] The embodiment of the present invention provides Figure 6 A network-side device shown includes:

[0131] The sending module 61 is configured to send satellite beam list configuration information to the terminal, where the beam list configuration information includes a beam index of the satellite's transmission beam.

[0132] Through the above modules, the embodiments of the present invention can help the terminal achieve fast beam switching, simplify the beam switching management process, reduce latency, and ensure the reliability of data reception.

[0133] Optionally, the beam list configuration information also includes: the partial bandwidth BWP corresponding to the transmitting beam, and / or the cell identifier corresponding to the transmitting beam.

[0134] Optionally, the sending module is further used to periodically broadcast the beam movement information of the satellite, where the beam movement information includes the beam movement direction, beam operation speed and beam coverage radius.

[0135] Optionally, the beam index is represented by an index of a reference signal used for beam management.

[0136] It should be noted that the device in this embodiment is the same as the above Figure 1 The device corresponding to the method shown, the implementation methods in the above embodiments are all applicable to the embodiments of the device, and can also achieve the same technical effects. It should be noted that the above device provided by the embodiment of the present invention can implement all the method steps implemented by the above method embodiment and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0137] Please refer to Figure 7 , an embodiment of the present invention provides a schematic diagram of a structure of a network side device, including: a processor 701, a transceiver 702, a memory 703 and a bus interface, wherein:

[0138] In this embodiment of the present invention, the network-side device further includes: a program stored in the memory 703 and executable on the processor 701, wherein the program, when executed by the processor 701, implements the following steps:

[0139] Sending satellite beam list configuration information to a terminal, where the beam list configuration information includes a beam index of a transmission beam of the satellite.

[0140] Optionally, the beam list configuration information also includes: the partial bandwidth BWP corresponding to the transmitting beam, and / or the cell identifier corresponding to the transmitting beam.

[0141] Optionally, when executing the program, the processor further implements the following steps:

[0142] The beam movement information of the satellite is broadcast periodically, wherein the beam movement information includes the beam movement direction, the beam movement speed and the beam coverage radius.

[0143] Optionally, the beam index is represented by an index of a reference signal used for beam management.

[0144] It is understandable that in the embodiment of the present invention, when the computer program is executed by the processor 701, the above Figure 1 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0145] exist Figure 7In the embodiment of the present invention, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits such as one or more processors represented by processor 701 and memory represented by memory 703. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore not further described herein. The bus interface provides an interface. The transceiver 702 can be multiple components, namely, a transmitter and a receiver, providing a means for communicating with various other devices over a transmission medium.

[0146] The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 701 when performing operations.

[0147] It should be noted that the terminal in this embodiment is the same as the above Figure 1 The device corresponding to the method shown, and the implementation methods in the above embodiments are all applicable to the embodiments of the terminal, and can also achieve the same technical effects. In this device, transceiver 702 and memory 703, as well as transceiver 702 and processor 701, can be communicatively connected via a bus interface. The functions of processor 701 can also be implemented by transceiver 702, and the functions of transceiver 702 can also be implemented by processor 701. It should be noted that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be detailed here.

[0148] In some embodiments of the present invention, a computer-readable storage medium is further provided, on which a program is stored. When the program is executed by a processor, the following steps are implemented:

[0149] Sending satellite beam list configuration information to a terminal, where the beam list configuration information includes a beam index of a transmission beam of the satellite.

[0150] When the program is executed by the processor, the above application can be realized. Figure 1 All implementation methods of the beam switching method of the network side device shown can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0151] Please refer to Figure 8 , an embodiment of the present invention provides a terminal, including:

[0152] A receiving module 81 is configured to receive satellite beam list configuration information sent by a network, where the beam list configuration information includes a beam index of a transmit beam of the satellite;

[0153] The switching processing module 82 is configured to switch the receiving beam using the beam list configuration information.

[0154] Specifically, the switching processing module 82 may include the following modules:

[0155] a calculation module 82 configured to calculate the remaining visible time of the satellite's current first transmit beam based on the terminal's own position and the satellite's beam movement information, and determine a beam switching time within the satellite, wherein the beam movement information includes a beam movement direction, a beam operating speed, and a beam coverage radius;

[0156] The switching module 83 is used to determine the second transmitting beam of the satellite after switching according to the beam list configuration information, and when the beam switching moment arrives, use the receiving beam corresponding to the second transmitting beam to receive the data sent by the satellite through the second transmitting beam.

[0157] Optionally, the beam list configuration information also includes: the partial bandwidth BWP corresponding to the transmitting beam, and / or the cell identifier corresponding to the transmitting beam.

[0158] Optionally, the terminal further includes:

[0159] An information acquisition module is used to receive the beam movement information of the satellite periodically broadcast by the network; or, based on the satellite operation ephemeris, obtain the beam movement direction and beam operation speed of the satellite, and receive the information of the beam coverage radius of the satellite periodically broadcast by the network.

[0160] Optionally, the beam index is represented by an index of a reference signal used for beam management.

[0161] It should be noted that the device in this embodiment is the same as the above Figure 2 The device corresponding to the method shown, the implementation methods in the above embodiments are all applicable to the embodiments of the device, and can also achieve the same technical effects. The above device provided by the embodiment of the present invention can implement all the method steps implemented by the above method embodiment and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be detailed here.

[0162] Please refer to Figure 9 , a schematic structural diagram of a terminal provided by an embodiment of the present invention, the terminal includes: a processor 901, a transceiver 902, a memory 903, a user interface 904 and a bus interface.

[0163] In the embodiment of the present invention, the terminal further includes: a program stored in the memory 903 and executable on the processor 901 .

[0164] When the processor 901 executes the program, the following steps are implemented:

[0165] Receive satellite beam list configuration information sent by a network, where the beam list configuration information includes a beam index of a transmit beam of the satellite; and switch a receive beam using the beam list configuration information.

[0166] Optionally, when executing the program, the processor further implements the following steps:

[0167] Calculating the remaining visible time of the satellite's current first transmit beam based on the terminal's own position and the satellite's beam movement information, and determining a beam switching time within the satellite, wherein the beam movement information includes a beam movement direction, a beam operating speed, and a beam coverage radius;

[0168] The second transmitting beam of the satellite after switching is determined according to the beam list configuration information, and when the beam switching time arrives, the receiving beam corresponding to the second transmitting beam is used to receive the data sent by the satellite through the second transmitting beam.

[0169] Optionally, the beam list configuration information also includes: the partial bandwidth BWP corresponding to the transmitting beam, and / or the cell identifier corresponding to the transmitting beam.

[0170] Optionally, when executing the program, the processor further implements the following steps:

[0171] receiving beam movement information of the satellite periodically broadcast by a network;

[0172] or,

[0173] According to the satellite operation ephemeris, the beam movement direction and beam operation speed of the satellite are obtained, and the information of the beam coverage radius of the satellite periodically broadcast by the receiving network is received.

[0174] Optionally, the beam index is represented by an index of a reference signal used for beam management.

[0175] It is understandable that in the embodiment of the present invention, when the computer program is executed by the processor 901, the above Figure 2 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0176] exist Figure 9In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 901 and memory represented by memory 903. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 902 may be a plurality of components, i.e., 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 904 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0177] The processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 can store data used by the processor 901 when performing operations.

[0178] It should be noted that the device in this embodiment is the same as the above Figure 2 The device corresponding to the method shown is applicable to the implementation methods in the above embodiments and can achieve the same technical effects. In the device, transceiver 902 and memory 903, as well as transceiver 902 and processor 901, can be communicatively connected via a bus interface. The functions of processor 901 can also be implemented by transceiver 902, and the functions of transceiver 902 can also be implemented by processor 901. It should be noted that the above device provided by the embodiment of the present invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be detailed here.

[0179] In some embodiments of the present invention, a computer-readable storage medium is further provided, on which a program is stored. When the program is executed by a processor, the following steps are implemented:

[0180] Receiving beam list configuration information of a satellite sent by a network, the beam list configuration information including a beam index of a transmit beam of the satellite;

[0181] The receiving beam is switched using the beam list configuration information.

[0182] When the program is executed by the processor, the above Figure 2 All implementation methods of the beam switching method applied to the terminal side shown can achieve the same technical effect. To avoid repetition, they will not be described here.

[0183] The embodiment of the present invention provides Figure 10 Another network-side device shown includes:

[0184] A calculation module 101 is configured to calculate a beam switching time at which the satellite switches the first transmit beam to a second transmit beam based on satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information;

[0185] The sending module 102 is configured to send beam configuration information of the second transmitting beam to the terminal through the first transmitting beam before the beam switching moment arrives, where the beam configuration information includes a beam index of the second transmitting beam.

[0186] Optionally, the beam configuration information also includes: a quasi-co-site QCL type corresponding to the second transmitting beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmitting beam.

[0187] Optionally, the sending module is further used to send a beam switching preparation time to the terminal through the first transmitting beam before the beam switching moment arrives.

[0188] Optionally, the network side device further includes:

[0189] The determination module is used to determine the sending time of the beam configuration information and send the beam configuration information according to the preset beam switching preparation time required for the terminal to perform beam switching.

[0190] It should be noted that the device in this embodiment is the same as the above Figure 4 The device corresponding to the method shown, the implementation methods in the above embodiments are all applicable to the embodiments of the device, and can also achieve the same technical effects. It should be noted that the above device provided by the embodiment of the present invention can implement all the method steps implemented by the above method embodiment and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0191] Please refer to Figure 11 , an embodiment of the present invention provides a schematic diagram of a structure of a network side device, including: a processor 1101, a transceiver 1102, a memory 1103 and a bus interface, wherein:

[0192] In an embodiment of the present invention, the network-side device further includes: a program stored in the memory 1103 and executable on the processor 1101, wherein the program, when executed by the processor 1101, implements the following steps:

[0193] Calculating, according to satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information, a beam switching time at which the satellite switches the first transmit beam to a second transmit beam;

[0194] Before the beam switching moment arrives, beam configuration information of the second transmit beam is sent to the terminal through the first transmit beam, where the beam configuration information includes a beam index of the second transmit beam.

[0195] Optionally, the beam configuration information also includes: a quasi-co-site QCL type corresponding to the second transmitting beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmitting beam.

[0196] Optionally, when executing the program, the processor further implements the following steps: before the beam switching moment arrives, sending a beam switching preparation time to the terminal through the first transmitting beam.

[0197] Optionally, when executing the program, the processor further implements the following steps:

[0198] According to a preset beam switching preparation time required for the terminal to perform beam switching, a sending time of the beam configuration information is determined and the beam configuration information is sent.

[0199] It is understandable that in the embodiment of the present invention, when the computer program is executed by the processor 1101, the above Figure 4 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0200] exist Figure 11 In the embodiment of the present invention, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits such as one or more processors represented by processor 1101 and memory represented by memory 1103. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore not further described herein. The bus interface provides an interface. The transceiver 1102 can be multiple components, namely, a transmitter and a receiver, providing a means for communicating with various other devices over a transmission medium.

[0201] The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.

[0202] It should be noted that the terminal in this embodiment is the same as the above Figure 4The device corresponding to the method shown, the implementation methods in the above embodiments are all applicable to the embodiments of the terminal, and can also achieve the same technical effects. In this device, the transceiver 1102 and the memory 1103, as well as the transceiver 1102 and the processor 1101, can be connected to each other through a bus interface. The functions of the processor 1101 can also be implemented by the transceiver 1102, and the functions of the transceiver 1102 can also be implemented by the processor 1101. It should be noted that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiment will not be detailed here.

[0203] In some embodiments of the present invention, a computer-readable storage medium is further provided, on which a program is stored. When the program is executed by a processor, the following steps are implemented:

[0204] Calculating, according to satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information, a beam switching time at which the satellite switches the first transmit beam to a second transmit beam;

[0205] Before the beam switching moment arrives, beam configuration information of the second transmit beam is sent to the terminal through the first transmit beam, where the beam configuration information includes a beam index of the second transmit beam.

[0206] When the program is executed by the processor, the above Figure 4 All implementation methods of the beam switching method applied to the network side device shown can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0207] Please refer to Figure 12 , an embodiment of the present invention provides a terminal, including:

[0208] A first receiving module 121 is configured to receive beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the satellite's transmit beam serving the terminal is to switch;

[0209] The second receiving module 122 is configured to receive data sent by the satellite through the second transmitting beam using a receiving beam corresponding to the second transmitting beam.

[0210] Optionally, the terminal further includes:

[0211] The third sending module is configured to send the location information and terminal mobility information of the terminal to the network, where the terminal mobility information includes terminal movement speed information and movement direction information.

[0212] Optionally, the beam configuration information also includes: a QCL type corresponding to the second transmitting beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmitting beam.

[0213] Optionally, the terminal further includes:

[0214] a fourth sending module, configured to receive a beam switching preparation time sent by the satellite through the first sending beam before the beam switching moment arrives;

[0215] The first switching module is used to determine a start time according to the beam switching preparation time, perform beam switching from the start time, and switch the terminal's receiving beam to a receiving beam corresponding to the second transmitting beam.

[0216] Optionally, the terminal further includes:

[0217] The second switching module is used to, after receiving the beam configuration information, enable the terminal to perform beam switching within a preset beam switching preparation time, and switch the terminal's receiving beam to a receiving beam corresponding to the second transmitting beam.

[0218] It should be noted that the device in this embodiment is the same as the above Figure 5 The device corresponding to the method shown, the implementation methods in the above embodiments are all applicable to the embodiments of the device, and can also achieve the same technical effects. The above device provided by the embodiment of the present invention can implement all the method steps implemented by the above method embodiment and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be detailed here.

[0219] Please refer to Figure 13 , a structural diagram of a terminal provided by an embodiment of the present invention, the terminal includes: a processor 1301, a transceiver 1302, a memory 1303, a user interface 1304 and a bus interface.

[0220] In the embodiment of the present invention, the terminal further includes: a program stored in the memory 1303 and executable on the processor 1301 .

[0221] When the processor 1301 executes the program, the following steps are implemented:

[0222] receiving beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the transmit beam of the satellite serving the terminal is to be switched;

[0223] The data transmitted by the satellite through the second transmitting beam is received by using a receiving beam corresponding to the second transmitting beam.

[0224] Optionally, when executing the program, the processor further implements the following steps:

[0225] The location information and terminal mobility information of the terminal are sent to the network, where the terminal mobility information includes terminal movement speed information and movement direction information.

[0226] Optionally, the beam configuration information also includes: a QCL type corresponding to the second transmitting beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmitting beam.

[0227] Optionally, when executing the program, the processor further implements the following steps:

[0228] receiving a beam switching preparation time sent by the satellite through a first transmitting beam before the beam switching moment arrives;

[0229] A start time is determined according to the beam switching preparation time, and beam switching is performed from the start time to switch the receiving beam of the terminal to the receiving beam corresponding to the second transmitting beam.

[0230] Optionally, when executing the program, the processor further implements the following steps:

[0231] After receiving the beam configuration information, the terminal performs beam switching within a preset beam switching preparation time, and switches the receiving beam of the terminal to a receiving beam corresponding to the second transmitting beam.

[0232] It is understandable that in the embodiment of the present invention, when the computer program is executed by the processor 1301, the above Figure 5 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0233] exist Figure 13In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1301 and memory represented by memory 1303. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1302 may be a plurality of components, i.e., 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 1304 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0234] The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1303 can store data used by the processor 1301 when performing operations.

[0235] It should be noted that the device in this embodiment is the same as the above Figure 5 The device corresponding to the method shown in the embodiment is applicable to the implementation methods of the above embodiments in the embodiment of the device, and can also achieve the same technical effects. In the device, the transceiver 1302 and the memory 1303, as well as the transceiver 1302 and the processor 1301, can be connected to each other through a bus interface. The functions of the processor 1301 can also be implemented by the transceiver 1302, and the functions of the transceiver 1302 can also be implemented by the processor 1301. It should be noted that the above-mentioned device provided by the embodiment of the present invention can implement all the method steps implemented by the above-mentioned method embodiment and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be detailed here.

[0236] In some embodiments of the present invention, a computer-readable storage medium is further provided, on which a program is stored. When the program is executed by a processor, the following steps are implemented:

[0237] receiving beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the transmit beam of the satellite serving the terminal is to be switched;

[0238] The data transmitted by the satellite through the second transmitting beam is received by using a receiving beam corresponding to the second transmitting beam.

[0239] When the program is executed by the processor, the above application can be realized. Figure 5 All implementation methods of the beam switching method on the terminal side shown can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0240] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0241] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0242] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0243] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

[0244] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0245] If the functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or the portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard drive, ROM, RAM, a magnetic disk, or an optical disk.

[0246] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A beam switching method, applied to a network-side device, characterized in that: include: Sending satellite beam list configuration information to the terminal, the beam list configuration information including the beam index of the satellite's transmit beam; wherein the beam list configuration information is used to determine the second transmit beam of the satellite after switching, so that the terminal can use the receive beam corresponding to the second transmit beam to receive the data sent by the satellite through the second transmit beam when the beam switching moment arrives; wherein the beam switching moment is determined by the terminal calculating the visible remaining time of the satellite's current first transmit beam based on its own position and the satellite's beam movement information, and wherein the beam movement information includes the beam movement direction, the beam operation speed and the beam coverage radius.

2. The method according to claim 1, wherein The beam list configuration information also includes: the partial bandwidth BWP corresponding to the transmitting beam, and / or the cell identifier corresponding to the transmitting beam.

3. The method according to claim 1, wherein Also includes: The beam movement information of the satellite is broadcast periodically, wherein the beam movement information includes the beam movement direction, the beam movement speed and the beam coverage radius.

4. The method according to claim 1, wherein The beam index is represented by an index of a reference signal used for beam management.

5. A beam switching method, applied to a terminal, characterized in that: include: Receiving beam list configuration information of a satellite sent by a network, the beam list configuration information including a beam index of a transmit beam of the satellite; Calculating the remaining visible time of the satellite's current first transmit beam based on the terminal's own position and the satellite's beam movement information, and determining a beam switching time within the satellite, wherein the beam movement information includes a beam movement direction, a beam operating speed, and a beam coverage radius; The second transmitting beam of the satellite after switching is determined according to the beam list configuration information, and when the beam switching time arrives, the receiving beam corresponding to the second transmitting beam is used to receive the data sent by the satellite through the second transmitting beam.

6. The method according to claim 5, wherein The beam list configuration information also includes: the partial bandwidth BWP corresponding to the transmitting beam, and / or the cell identifier corresponding to the transmitting beam.

7. The method according to claim 5, wherein Also includes: receiving beam movement information of the satellite periodically broadcast by a network; or, According to the satellite operation ephemeris, the beam movement direction and beam operation speed of the satellite are obtained, and the information of the beam coverage radius of the satellite periodically broadcast by the receiving network is received.

8. The method according to claim 5, wherein The beam index is represented by an index of a reference signal used for beam management.

9. A beam switching method, applied to a network side device, characterized in that: include: Calculating, according to satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information, a beam switching time at which the satellite switches the first transmit beam to a second transmit beam; Before the beam switching moment arrives, sending a beam switching preparation time to the terminal through the first transmit beam; The network-side device determines the sending time of the beam configuration information according to the preset beam switching preparation time required for the terminal to perform beam switching; Before the beam switching moment arrives, beam configuration information of the second transmit beam is sent to the terminal through the first transmit beam, where the beam configuration information includes a beam index of the second transmit beam.

10. The method according to claim 9, wherein The beam configuration information also includes: a quasi-co-site QCL type corresponding to the second transmit beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmit beam.

11. A beam switching method, applied to a terminal, characterized in that: include: receiving beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the transmit beam of the satellite serving the terminal is to be switched; receiving a beam switching preparation time sent by the satellite through the first transmit beam before the beam switching moment arrives; determining a start time based on the beam switching preparation time, performing beam switching from the start time, and switching the receive beam of the terminal to the receive beam corresponding to the second transmit beam; The data transmitted by the satellite through the second transmitting beam is received by using a receiving beam corresponding to the second transmitting beam.

12. The method according to claim 11, wherein Also includes: The location information and terminal mobility information of the terminal are sent to the network, where the terminal mobility information includes terminal movement speed information and movement direction information.

13. The method according to claim 11, wherein The beam configuration information also includes: a QCL type corresponding to the second transmit beam and first information, wherein the QCL type is type D, and the first information includes at least one of a BWP and a cell identifier corresponding to the second transmit beam.

14. A network side device, characterized in that: including a transceiver and a processor, wherein The transceiver is used to send the satellite's beam list configuration information to the terminal, wherein the beam list configuration information includes the beam index of the satellite's transmit beam; wherein the beam list configuration information is used to determine the second transmit beam of the satellite after switching, so that when the beam switching moment arrives, the terminal uses the receive beam corresponding to the second transmit beam to receive the data sent by the satellite through the second transmit beam; wherein the beam switching moment is determined by the terminal calculating the visible remaining time of the satellite's current first transmit beam based on its own position and the satellite's beam movement information, wherein the beam movement information includes the beam movement direction, the beam operation speed and the beam coverage radius.

15. A network side device, characterized in that: including a transceiver and a processor, wherein The processor is configured to calculate, based on satellite operating ephemeris, a first transmit beam currently served by the satellite for the terminal, location information reported by the terminal, and terminal mobility information, a beam switching time at which the satellite switches the first transmit beam to a second transmit beam; The transceiver is configured to send a beam switching preparation time to the terminal through the first transmit beam before the beam switching moment arrives; The processor is further configured to determine, by the network-side device, a sending time of the beam configuration information according to a preset beam switching preparation time required for the terminal to perform beam switching; The transceiver is further configured to send beam configuration information of the second transmit beam to the terminal through the first transmit beam before the beam switching moment arrives, where the beam configuration information includes a beam index of the second transmit beam.

16. A base station, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 1 to 4 and 9 to 10 are implemented.

17. A terminal, characterized in that: including a transceiver and a processor, wherein The transceiver is configured to receive beam list configuration information of a satellite sent by a network, wherein the beam list configuration information includes a beam index of a transmit beam of the satellite; The processor is configured to calculate the remaining visible time of the satellite's current first transmitting beam based on the terminal's own position and the satellite's beam movement information, and determine a beam switching moment within the satellite, wherein the beam movement information includes a beam movement direction, a beam operating speed, and a beam coverage radius; determine a second transmitting beam of the satellite after switching based on the beam list configuration information, and when the beam switching moment arrives, use a receiving beam corresponding to the second transmitting beam to receive data sent by the satellite through the second transmitting beam.

18. A terminal, characterized in that: including a transceiver and a processor, wherein The transceiver is configured to receive beam configuration information sent by a network, where the beam configuration information includes a beam index of a second transmit beam, where the second transmit beam is a target beam to which the satellite's transmit beam serving the terminal is to switch; The transceiver is further configured to receive a beam switching preparation time transmitted by the satellite via the first transmit beam before the beam switching moment arrives; determine a start time based on the beam switching preparation time, and perform beam switching from the start time to switch the receiving beam of the terminal to the receiving beam corresponding to the second transmit beam; The processor is configured to receive data sent by the satellite through the second transmitting beam using a receiving beam corresponding to the second transmitting beam.

19. A terminal, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 5 to 8 and 11 to 13 are implemented.

20. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 13.

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