Handover method, apparatus, device, and medium for terminal

Abstract

The application discloses a switching method / switching indication method, device and equipment and a storage medium for a terminal, relates to the field of communication, and the method comprises the following steps: a network device sends indication signaling to a connected terminal; the terminal receives the indication signaling, and the indication signaling is used for indicating target spectrum resources and / or a target beam direction; the terminal switches from service spectrum resources to the target spectrum resources according to the indication signaling, and / or switches a service beam direction to the target beam direction according to the indication signaling.

Description

Technical Field

[0001] This application relates to the field of wireless communication, and in particular to a switching method, apparatus, device and medium for a terminal. Background Technology

[0002] In satellite communications, satellites use different beams to cover different areas, each area being called a beam footprint. To avoid co-channel interference, different beam footprints use different beams and different frequency domain resources. Similarly, to avoid interference between different satellites, if different satellites cover the same location on the ground, different frequency domain resources are also required. This applies to both signaling beams (such as synchronization blocks) and data beams. Moreover, the signaling and data frequency domain resources used by the same satellite covering the same location can be the same or different. These different frequency domain resources can be different bandwidth parts (BWP) or different component carriers (CC). Summary of the Invention

[0003] This application provides a method, apparatus, device, and medium for switching terminals. The technical solution is as follows.

[0004] According to one aspect of this application, a method for switching terminals is provided, the method comprising:

[0005] Receive indication signaling, the indication signaling being used to indicate target communication resources;

[0006] The service communication resource is switched to the target communication resource according to the instruction signaling.

[0007] According to one aspect of this application, a handover indication method for a terminal is provided, the method comprising:

[0008] Send an indication signaling message to the terminal, the indication signaling message being used to indicate the target communication resource.

[0009] According to one aspect of this application, a switching device for a terminal is provided, the device comprising:

[0010] A receiving module is configured to receive indication signaling, wherein the indication signaling is used to indicate target communication resources;

[0011] The switching module is used to switch the service communication resource to the target communication resource according to the instruction signaling.

[0012] According to one aspect of this application, a switching indication device for a terminal is provided, the device comprising:

[0013] The sending module is used to send an indication signaling message to the terminal, the indication signaling message being used to indicate the target communication resources.

[0014] According to one aspect of this application, a terminal is provided, the terminal comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the terminal switching method as described above.

[0015] According to one aspect of this application, a network device is provided, the network device comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the handover indication method for a terminal as described above.

[0016] According to one aspect of this application, a computer-readable storage medium is provided, wherein executable instructions are stored therein, the executable instructions being loaded and executed by the processor to implement the handover / handover indication method for a terminal as described above.

[0017] According to one aspect of this application, a computer program product is provided, wherein executable instructions are stored in the readable storage medium, the executable instructions being loaded and executed by the processor to implement the handover / handover indication method for a terminal as described above.

[0018] According to one aspect of this application, a chip is provided for performing a handover / handover indication method for a terminal as described in the above aspect.

[0019] The technical solutions provided in this application have at least the following beneficial effects:

[0020] By sending an instruction signaling message from the network device to the terminal, the instruction signaling message is used to instruct the terminal to switch from the serving communication resource to the target communication resource when the satellite moves or the terminal moves, so that a handover scheme between different beam coverage areas can be proposed for the connected terminal. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a network architecture diagram of a communication system provided in an exemplary embodiment of this application;

[0023] Figure 2 This is a flowchart of a terminal switching method provided in an exemplary embodiment of this application;

[0024] Figure 3 This is a flowchart of a terminal switching method provided in an exemplary embodiment of this application;

[0025] Figure 4 This is a flowchart of a terminal switching method provided in an exemplary embodiment of this application;

[0026] Figure 5 This is a flowchart of a terminal switching method provided in an exemplary embodiment of this application;

[0027] Figure 6 This is a flowchart of a terminal switching method provided in an exemplary embodiment of this application;

[0028] Figure 7 This is a flowchart of a measurement configuration method for a terminal provided in an exemplary embodiment of this application;

[0029] Figure 8 This is a block diagram of a switching device for a terminal provided in an exemplary embodiment of this application;

[0030] Figure 9 This is a block diagram of a switching indication device for a terminal provided in an exemplary embodiment of this application;

[0031] Figure 10 This is a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0033] Figure 1 A schematic diagram of a system architecture provided in one embodiment of this application is shown. This system architecture may include: a terminal 10 and a network device 20.

[0034] The number of terminals 10 is typically multiple, with one or more terminals 10 distributed within the cell managed by each network device 20. Terminals 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), etc. For ease of description, in this embodiment, the devices mentioned above are collectively referred to as terminals.

[0035] Network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal 10. Network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the name of a device with network device functionality may differ; for example, in a 5G NR system, it is called gNodeB or gNB. As communication technologies evolve, the name "network device" may change. In non-terrestrial networks (NTNs), network devices include base stations and satellites; content transmitted by the base station is forwarded to the terminal device via satellite. For ease of description, in this embodiment, the aforementioned device providing wireless communication functionality to terminal 10 is collectively referred to as a network device.

[0036] The "5G NR system" in this disclosure can also be called a 5G system or an NR system. The NR system can be a communication system supporting NR-U, or it can be an NTN. However, those skilled in the art will understand its meaning. The technical solutions described in this disclosure are applicable to 5G NR systems, and also to subsequent evolutionary systems of 5G NR systems.

[0037] Figure 2 A flowchart of a terminal switching method according to an embodiment of this application is shown. This embodiment applies the method to... Figure 1 The method is illustrated using the aforementioned communication system as an example. The method includes:

[0038] Step 220: The network device sends an instruction signaling message to the terminal;

[0039] Optionally, the terminal is a connected terminal.

[0040] Step 240: The terminal receives an indication signaling message, which is used to indicate the target communication resource;

[0041] Optionally, the target communication resources include: target spectrum resources and / or target beam direction;

[0042] The terminal is configured with signaling beams and data beams. The signaling beams and data beams can be the same or different. Specifically:

[0043] The signaling beam includes, but is not limited to, at least one of the following: the beam for receiving the Synchronization Signal Block (SSB), CORESET #0 (PDCCH for indicating the position of SIB1), System Information Block 1 (SIB1), other system information, and Positioning Reference Signal (PRS), and the beam for transmitting the Physical Random Access Channel (PRACH).

[0044] Data beams include, but are not limited to: beams for receiving the Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH); beams for receiving the Channel State Information-Reference Signal (CSI-RS), Demodulation Reference Signal (DMRS), and PRS; beams for transmitting the Physical Uplink Control Channel (PDCCH) and Physical Uplink Shared Channel (PDSCH); and beams for transmitting the DMRS, Sounding Reference Signal (SRS), and PRACH.

[0045] In some embodiments, the indication signaling is used to indicate the target spectrum resource and / or target beam direction corresponding to the next handover.

[0046] The target spectrum resources include at least one of downlink spectrum resources and uplink spectrum resources;

[0047] The target beam direction includes at least one of the downlink beam direction and the uplink beam direction.

[0048] Step 260: The terminal switches from the serving communication resource to the target communication resource according to the instruction signaling;

[0049] The terminal switches to the target spectrum resource according to the instruction signaling service spectrum resource;

[0050] Alternatively, the terminal may switch the serving beam direction to the target beam direction according to the instruction signaling;

[0051] Alternatively, the terminal may switch from serving spectrum resources to target spectrum resources according to the instruction signaling, and the terminal may switch the serving beam direction to the target beam direction according to the instruction signaling.

[0052] Optionally, during the process of switching from the first beam coverage area to the second beam coverage area, the serving spectrum resource is switched to the target spectrum resource according to the instruction signaling, and / or the serving beam direction is switched to the target beam direction according to the instruction signaling.

[0053] In summary, the method provided in this embodiment, by sending an indication signaling from a network device to a terminal, instructs the terminal to switch from a serving spectrum resource to a target spectrum resource when the satellite or the terminal moves, and / or to switch the serving beam direction to the target beam direction according to the indication signaling, thereby providing a switching scheme between different beam coverage areas for connected terminals.

[0054] Based on Figure 2 In an alternative embodiment, the target spectrum resource may include one or two spectrum resources.

[0055] In one example, the indication signaling indicates the availability of a first spectrum resource. Based on the indication signaling, the terminal switches the serving spectrum resource corresponding to the signaling beam and / or the serving spectrum resource corresponding to the data beam to the first spectrum resource.

[0056] For example, the terminal determines the first spectrum resource based on the instruction signaling and switches the serving spectrum resource corresponding to the signaling beam to the first spectrum resource. As another example, the terminal determines the first spectrum resource based on the instruction signaling and switches the serving spectrum resource corresponding to the data beam to the first spectrum resource. As yet another example, the terminal determines the first spectrum resource based on the instruction signaling and switches both the serving spectrum resource corresponding to the signaling beam and the serving spectrum resource corresponding to the data beam to the first spectrum resource.

[0057] In another example, the indication signaling simultaneously indicates the availability of a first spectrum resource and a second spectrum resource, with the first spectrum resource corresponding to the signaling beam and the second spectrum resource corresponding to the data beam. Based on the indication signaling, the terminal switches the serving spectrum resource corresponding to the signaling beam to the first spectrum resource and switches the serving spectrum resource corresponding to the data beam to the second spectrum resource.

[0058] Optionally, the target spectrum resource may be the same as or different from the serving spectrum resource. When the target spectrum resource includes one spectrum resource, the serving spectrum resource may include one or two spectrum resources. If the serving spectrum resource includes only one spectrum resource, then the serving spectrum resource and the target spectrum resource may be the same as or different from each of the two spectrum resources of the serving spectrum resource; if the serving spectrum resource includes two spectrum resources, the target spectrum resource may be different from both of the two spectrum resources of the serving spectrum resource, or it may be the same as one of the spectrum resources of the serving spectrum resource.

[0059] Based on Figure 2 In an optional embodiment, the target beam direction may include one or two beam directions.

[0060] In one example, the indication signaling indicates the presence of a first beam direction. Based on the indication signaling, the terminal switches the service beam direction corresponding to the signaling beam and / or the service beam direction corresponding to the data beam to the first beam direction.

[0061] For example, the terminal determines the first beam direction based on the indication signaling and switches the service beam direction corresponding to the signaling beam to the first beam direction. As another example, the terminal determines the first beam direction based on the indication signaling and switches the service beam direction corresponding to the data beam to the first beam direction. As yet another example, the terminal determines the first beam direction based on the indication signaling and switches both the service beam direction corresponding to the signaling beam and the service beam direction corresponding to the data beam to the first beam direction.

[0062] In another example, the indication signaling simultaneously indicates a first beam direction and a second beam direction, where the first beam direction corresponds to the signaling beam and the second beam direction corresponds to the data beam. Based on the indication signaling, the terminal switches the service beam direction corresponding to the signaling beam to the first beam direction and switches the service beam direction corresponding to the data beam to the second beam direction.

[0063] Optionally, the target beam direction may be the same as or different from the serving beam direction. When the target beam direction includes one beam direction, the serving beam direction may include one or two beam directions. If the serving beam direction includes only one beam direction, then the serving beam direction and the target beam direction may be the same as or different from each of the two beam directions of the serving beam direction; if the serving beam direction includes two beam directions, the target beam direction may be different from both of the two beam directions of the serving beam direction, or it may be the same as one of the beam directions of the serving beam direction. When the target beam direction includes two beam directions, the serving beam direction may include one or two beam directions. If the serving beam direction includes only one beam direction, then the serving beam direction and the two beam directions of the target beam direction may be different from both of the two beam directions of the serving beam direction, or one of the beam directions of the target beam direction may be the same as one of the beam directions of the serving beam direction.

[0064] Based on Figure 2 In an optional embodiment, the terminal stores the correspondence between spectrum resources and beam directions, and the method further includes at least one of the following steps:

[0065] When the terminal receives a signaling instruction carrying the resource ID of a target spectrum resource, it determines the beam ID of the target beam direction based on the resource ID and its corresponding relationship. That is, based on the resource ID of the target spectrum resource, the terminal can determine not only the target spectrum resource but also the target beam direction. Similarly, the target spectrum resource may contain one or two spectrum resources.

[0066] When the terminal receives a signaling instruction carrying the beam ID of the target beam direction, it determines the resource ID of the target spectrum resource based on the beam ID and its corresponding relationship. That is, based on the beam ID of the target beam direction, the terminal can determine not only the target beam direction but also the target spectrum resource. Similarly, the target beam direction may include one or two beam directions.

[0067] Based on Figure 2 In an optional embodiment, since the movement of the satellite has a certain regularity, the indication signaling is used to indicate the N sets of target spectrum resources and / or target beam directions corresponding to the N switching, where N is an integer greater than or equal to 1.

[0068] Optionally, when the indication signaling is used to indicate multiple sets of target spectrum resources and / or target beam directions corresponding to at least two handovers, the indication signaling may further include: the time interval between two adjacent handovers.

[0069] Optionally, each of the N handovers targets one or two spectrum resources as the target spectrum resource and one or two beam directions as the target beam direction. The terminal, according to the instruction signaling, switches its current serving spectrum resource to the target spectrum resource and / or switches its current serving beam direction to the target beam direction. N is a natural number.

[0070] When N is 1, it indicates the target spectrum resource and / or target beam direction for the next handover; when N is greater than 1, such as 2, it indicates the target spectrum resource or target beam direction for the next 2 handovers: the first handover is to the first group of target spectrum resources and / or target beam directions, and the second handover is to the second group of target spectrum resources and / or target beam directions.

[0071] When N is greater than 1, the indication signaling is also used to indicate the time interval between two handovers, i.e., the duration of continuous use of each set of target spectrum resources and / or target beam directions.

[0072] Optionally, each set of parameters can indicate the ID of that set of parameters, and the ID of that set of parameters corresponds to a spectrum resource ID and a beam direction ID; or each set of parameters can indicate only the spectrum resource ID or the beam direction ID. Since there is a correspondence, the terminal can query the beam direction ID (referred to as beam ID) from the spectrum resource ID (referred to as resource ID) and the correspondence, or query the spectrum resource ID from the beam direction ID and the correspondence.

[0073] Based on Figure 2 In an optional embodiment, the above-mentioned indication signaling can be configured by one type of signaling or by at least two types of signaling.

[0074] For cases where the instruction signaling uses RRC configuration.

[0075] Figure 3 A flowchart illustrating a terminal switching method according to an illustrative embodiment of this application is shown. This embodiment applies the method to... Figure 1 The method is illustrated using the aforementioned communication system as an example. The method includes:

[0076] Step 320: The network device sends a first RRC signaling message to the terminal, the first RRC signaling message carrying an indication signaling message;

[0077] Optionally, the terminal is a connected terminal.

[0078] Optionally, the first RRC signaling is a handover command (HO command); the handover command carries at least one of the following identifiers:

[0079] The resource identifier (IDentity, ID) of the first spectrum resource;

[0080] Resource ID of the second spectrum resource;

[0081] Beam ID in the first beam direction;

[0082] Beam ID in the second beam direction.

[0083] Optionally, the resource ID includes at least one of the following: CC ID, BWP ID, and frequency band ID. The beam ID includes: reference signal ID.

[0084] In one example, the first RRC signaling does not carry a Physical Cell Identifier (PCI) indication field; or, the first RRC signaling carries a PCI indication field and the PCI indication field is empty or the PCI indicated by the PCI indication field is the same as the PCI of the current beam coverage area; or, the first RRC signaling carries a PCI indication field and the PCI indication field is not empty. For example, when the handover scenario is an intra-cell handover scenario, that is, when the physical cell identifiers before and after the handover are the same, the first RRC signaling does not carry a PCI indication field; or, the first RRC signaling carries a PCI indication field and the PCI indication field is empty. The terminal implicitly knows that the PCI of the second beam coverage area after the handover is the same as the PCI of the current first beam coverage area; or, the first RRC signaling carries a PCI indication field and the PCI indicated by the PCI indication field is the same as the PCI of the current first beam coverage area. The terminal explicitly knows that the PCI of the second beam coverage area after the handover is the same as the PCI of the current first beam coverage area. When the handover scenario is an inter-cell handover scenario, that is, when the physical cell identifiers before and after the handover are different, the first RRC signaling carries a PCI indicator field and the PCI indicator field is not empty. The PCI carried in the PCI indicator field is different from the PCI of the current first beam coverage area.

[0085] In one example, the first RRC signaling does not carry a satellite ID indication field; or, the first RRC signaling carries a satellite ID indication field and the satellite ID indication field is empty or the satellite ID carried in the satellite ID indication field is the same as the satellite ID of the current first beam coverage area; or, the first RRC signaling carries a satellite ID indication field and the satellite ID indication field is not empty. For example, when the handover scenario is an intra-satellite handover scenario, that is, when the satellite IDs before and after the handover are the same, the first RRC signaling does not carry a satellite ID indication field; or, the first RRC signaling carries a satellite ID indication field and the satellite ID indication field is empty, and the terminal implicitly knows that the satellites of the second beam coverage area after the handover are the same as the satellites of the current first beam coverage area; or, the first RRC signaling carries a satellite ID indication field and the satellite ID carried in the satellite ID indication field is the same as the satellite ID of the current first beam coverage area, and the terminal explicitly knows that the satellite IDs of the second beam coverage area after the handover are the same as the satellite IDs of the current first beam coverage area. When the handover scenario is an inter-satellite handover scenario, that is, when the satellite IDs before and after the handover are different, the first RRC signaling carries a satellite ID indication field and the satellite ID indication field is not empty, and the satellite ID carried in the satellite ID indication field is different from the satellite ID of the current first beam coverage area.

[0086] In one example, the first RRC signaling also carries a new Timing Advance (TA). This TA indicates either an absolute value or a relative value, which can be relative to the TA corresponding to the current first beam coverage area or relative to a common TA. Optionally, this TA can also be carried in the second RRC signaling, and the value of the TA can be different for different second beam coverage areas.

[0087] In one example, the first RRC signaling also carries a duration of T, which instructs the terminal to complete the handover within T hours of receiving the first RRC signaling. That is, starting from the first symbol or time slot after time T, the terminal will use the target spectrum resources and / or target beam direction to transmit and receive signaling and / or data. Optionally, the duration T is in units of symbols or time slots. The SCS is based on the SCS of the signaling spectrum resources in the target spectrum resources. This duration T can also be carried in the second RRC signaling; the value of T can vary for different second beam coverage areas.

[0088] In one example, the first RRC signaling is also used to indicate random access related information to the terminal. That is, the first RRC signaling indicates whether the terminal needs to undergo a random access procedure, illustratively including the following indication methods:

[0089] a) Clearly indicate whether a random access procedure is required;

[0090] b) Implicit indication of whether a random access procedure is required. For example, in handover scenarios where the physical cell identifier or satellite ID is the same before and after the handover, a random access procedure may not be required; otherwise, in handover scenarios where the physical cell identifier or satellite ID is different before and after the handover, a random access procedure is required.

[0091] c) Implicit indication of whether a random access procedure is required. For example, if the TA and T durations are indicated, a random access procedure is not required; if these two pieces of information are not indicated, a random access procedure is required, even in handover scenarios where the physical cell identifier or satellite ID is the same before and after the handover. The random access procedure can be a contention-based or non-contention-based procedure. If the first RRC signaling indicates a random access preamble, it is a non-contention-based random access procedure; otherwise, it is a contention-based random access procedure.

[0092] In one example, the first RRC signaling is also used to indicate the ID of the second beam coverage area. The second beam coverage area is the target beam coverage area after the handover. If the ID of the second beam coverage area corresponds one-to-one with all the above information, then only the ID of the second beam coverage area needs to be indicated, and the target spectrum resources, target beam, physical cell identifier, satellite identifier ID, TA, T, whether random access is required, etc., can be obtained accordingly. Alternatively, if the ID of the second beam coverage area corresponds one-to-one with a portion of the information, then the corresponding information does not need to be indicated. Or, the ID of the reference signal used for beam measurement is the ID of the second beam coverage area, because satellites use different beams to transmit different reference signals, and each reference signal has a different ID, so the reference signal ID determines the area of ​​the second beam coverage area ID. Therefore, only the ID of the target beam can be indicated, and the corresponding target frequency domain resources can be obtained accordingly.

[0093] Step 340: The terminal receives the first RRC signaling, which carries the target spectrum resources and / or target beam direction;

[0094] The terminal obtains, based on the information carried in the first RRC signaling, the ID of the second beam coverage area, the target spectrum resource, the target beam, the physical cell identifier, the satellite identifier ID, the TA, the T duration, and whether at least one piece of information is required in the random access process. All or part of the above information is explicitly indicated. Optionally, all or part of the above information is implicitly indicated.

[0095] Step 360: The terminal switches from the serving spectrum resource to the target spectrum resource according to the instruction signaling, and / or switches the serving beam direction to the target beam direction according to the instruction signaling.

[0096] In one example, when the first RRC signaling carries the resource ID of the first spectrum resource, the serving spectrum resource corresponding to the signaling beam is switched to the first spectrum resource, and / or the serving spectrum resource corresponding to the data beam is switched to the first spectrum resource.

[0097] In one example, when the first RRC signaling carries the resource ID of the first spectrum resource and the resource ID of the second spectrum resource, the serving spectrum resource corresponding to the signaling beam is switched to the first spectrum resource, and the serving spectrum resource corresponding to the data beam is switched to the second spectrum resource.

[0098] In one example, when the first RRC signaling carries a resource ID for the first beam direction, the service beam direction corresponding to the signaling beam is switched to the first beam direction, and / or the service beam direction corresponding to the data beam is switched to the first beam direction.

[0099] In one example, when the first RRC signaling carries the resource ID of the first beam direction and the resource ID of the second beam direction, the service beam direction corresponding to the signaling beam is switched to the first beam direction, and the service beam direction corresponding to the data beam is switched to the second beam direction.

[0100] In one example, the terminal stores the correspondence between spectrum resources and beam directions.

[0101] When the first RRC signaling carries the resource ID of the first spectrum resource, the beam ID of the first beam direction is determined according to the correspondence. The terminal switches the serving spectrum resource corresponding to the signaling beam to the first spectrum resource, and / or switches the serving spectrum resource corresponding to the data beam to the first spectrum resource; and / or the terminal switches the serving beam direction corresponding to the signaling beam to the first beam direction, and / or switches the serving beam direction corresponding to the data beam to the first beam direction.

[0102] When the first RRC signaling carries the resource ID of the first spectrum resource and the resource ID of the second spectrum resource, the beam ID of the first beam direction and the beam ID of the second beam direction are determined according to the correspondence. The terminal switches the serving spectrum resource corresponding to the signaling beam to the first spectrum resource, and / or switches the serving spectrum resource corresponding to the data beam to the second spectrum resource; and / or the terminal switches the serving beam direction corresponding to the signaling beam to the first beam direction, and switches the serving beam direction corresponding to the data beam to the second beam direction.

[0103] When the first RRC signaling carries the beam ID of the first beam direction, the resource ID of the first spectrum resource is determined according to the correspondence. The terminal switches the service beam direction corresponding to the signaling beam to the first beam direction, and / or switches the service beam direction corresponding to the data beam to the first beam direction; and / or the terminal switches the service spectrum resource corresponding to the signaling beam to the first spectrum resource, and / or switches the service spectrum resource corresponding to the data beam to the first spectrum resource.

[0104] When the first RRC signaling carries the beam ID of the first beam direction and the beam ID of the second beam direction, the resource ID of the first spectrum resource and the resource ID of the second spectrum resource are determined according to the correspondence. The terminal switches the service beam direction corresponding to the signaling beam to the first beam direction, and / or switches the service beam direction corresponding to the data beam to the second beam direction; and / or the terminal switches the service spectrum resource corresponding to the signaling beam to the first spectrum resource, and switches the service spectrum resource corresponding to the data beam to the second spectrum resource.

[0105] In one example, after receiving the first RRC signaling for duration T, the terminal switches from the serving spectrum resource to the target spectrum resource according to the indication signaling, and / or switches the serving beam direction to the target beam direction according to the indication signaling. That is, starting from the first symbol or time slot after time T, the terminal will use the target spectrum resource and / or the target beam direction to transmit and receive signaling and / or data.

[0106] In summary, the method provided in this embodiment, by sending indication instructions, such as HO commands, to the terminal through RRC signaling, can complete the switching of frequency domain resources and / or beam direction of signaling beams and / or data beams when the terminal needs to switch from the first beam coverage area to the second beam coverage area.

[0107] For cases where at least two signaling configurations are used for instruction signaling.

[0108] Figure 4 A flowchart illustrating a terminal switching method according to an illustrative embodiment of this application is shown. This embodiment applies the method to... Figure 1 The method is illustrated using the aforementioned communication system as an example. The method includes:

[0109] Step 420: The network device sends at least two types of signaling to the terminal, the at least two types of signaling being used to coordinate and indicate target information;

[0110] Among them, at least two types of signaling (or at least two groups) are used to coordinate the indication of target information, and the target information includes at least one of four types of information: target signaling spectrum resources, target data spectrum resources, target signaling beams, and target data beams.

[0111] Optionally, at least two signaling types include a first signaling and a second signaling. Depending on the type of signaling, at least the following four scenarios are included:

[0112] 1. The first signaling includes the fourth RRC signaling, and the second signaling includes MAC signaling;

[0113] 2. The first signaling includes the fourth RRC signaling, and the second signaling includes the DCI signaling;

[0114] 3. The first signaling includes the fourth RRC signaling, and the second signaling includes MAC signaling and DCI signaling;

[0115] 4. The first signaling includes the fourth RRC signaling and MAC signaling, and the second signaling includes DCI signaling.

[0116] Optionally, the first information in the target information is jointly indicated by the first signaling and the second signaling; the remaining information in the target information other than the first information is indicated by the first signaling. The first information includes one, two, three, or four of the target signaling spectrum resources, target data spectrum resources, target signaling beams, and target data beams.

[0117] Optionally, the second signaling includes a single second signaling used to indicate at least two types of information in the target information; or, the second signaling includes multiple second signalings, each used to indicate one type of information in the target information.

[0118] Optionally, the first signaling includes the same first signaling, which is used to indicate at least two types of information in the target information; or, the first signaling includes multiple first signalings, which are used to indicate one type of information in the target information respectively.

[0119] Regarding the first scenario mentioned above, taking the first signaling message including the fourth RRC signaling message and the second signaling message including MAC signaling message as an example:

[0120] Among the four types of target information—target signaling spectrum resources, target data spectrum resources, target signaling beam, and target data beam—at least one type of target information is a joint indication of MAC signaling and fourth RRC signaling, and the remaining target information is a fourth RRC signaling indication.

[0121] Optionally, the fourth RRC signaling and MAC signaling carry ID information, which includes at least one of the following: resource ID of the target signaling spectrum resource, resource ID of the target data spectrum resource, beam ID of the target signaling beam, and beam ID of the target data beam. The resource information corresponding to the resource ID, and the reference signal information corresponding to the beam ID, are both provided by... Figure 5 The second RRC signaling and / or shown Figure 6The third RRC signaling shown provides advance indication, or the fourth RRC signaling provides indication.

[0122] Optionally, for the four types of information—target signaling spectrum resource (i.e., the first spectrum resource), target data spectrum resource (i.e., the second spectrum resource or the first spectrum resource), target signaling beam (i.e., the first beam direction), and target data beam (i.e., the second beam direction or the first beam direction)—if more than one type of target information is a MAC signaling indication, it can be the same MAC signaling indication or different MAC signaling indications. If the same MAC signaling indication has at least two types of target information, such as a MAC signaling indication for a target signaling beam and a target data beam, then different bits in the MAC correspond to different reference signal IDs. A bit of "1" indicates that the beam direction corresponding to the reference signal ID is activated as the target beam direction. When two bits are displayed as "1," it indicates that the beam directions corresponding to two reference signal IDs are activated as the target beam direction. Which specific beam is used for the signaling beam and which for the data beam can be determined according to the second RRC signaling or the default rule. For example: The second RRC signaling pre-configures two beam sets, one for signaling and one for data. Both beam sets provide reference signal IDs. Then, the reference signal ID belonging to the signaling beam set indicated by the MAC signaling is used for the signaling beam, and the reference signal ID belonging to the data beam set is used for the data beam. Another example: the default rule is that the high-order bits of the MAC signaling bits indicate the signaling beam, and the low-order bits indicate the data beam, or vice versa. Alternatively, the fourth RRC signaling provides beam group IDs, and each beam group contains one signaling beam ID and one data beam ID. The MAC signaling directly activates the beam group ID to indicate one signaling beam ID and one data beam ID.

[0123] For example, the same MAC signaling indicates both the target signaling spectrum and the target data spectrum. Different bits in this MAC correspond to different resource IDs. A bit of "1" indicates that the spectrum resource corresponding to that resource ID is the target spectrum resource. When two bits are "1", it means that the spectrum resources corresponding to two resource IDs are activated as target spectrum resources. Which one is used for the signaling beam and which for the data beam can be determined based on the second RRC signaling or the default rule. For example, the second RRC signaling pre-configures two resource sets: one for signaling and one for data. Both resource sets provide resource IDs. Then, the resource ID belonging to the signaling resource set indicated by the MAC signaling is used for the signaling beam, and the resource ID belonging to the data resource set is used for the data beam. Alternatively, the default rule is that the high-order bits in the MAC signaling indicate the signaling beam, and the low-order bits indicate the data beam, or vice versa. Alternatively, the fourth RRC signaling provides a spectrum group ID. Each spectrum group contains a signaling spectrum ID and a data spectrum ID. The MAC signaling directly activates the spectrum group ID to indicate a signaling spectrum ID and a data spectrum ID.

[0124] Optionally, if there is more than one type of target information that is a fourth RRC signaling indication, then it can be the same fourth RRC signaling indication or different fourth RRC signaling indications. If the same fourth RRC signaling indication has at least two types of target information, such as a fourth RRC signaling indication of a target signaling beam and a target data beam, then different indication fields in the fourth RRC signaling correspond to different beam directions, that is, there is a one-to-one correspondence between the indication fields and the target signaling beam and the target data beam.

[0125] For example, the same fourth RRC signaling indicates the target signaling spectrum and the target data spectrum. Then, different indication fields in this fourth RRC signaling correspond to different spectrum resources, that is, there is a one-to-one correspondence between the indication fields and the target signaling spectrum and the target data spectrum.

[0126] Optionally, the fourth RRC signaling is a handover command (HO command). The resource IDs mentioned above include at least one of the following: CC ID, BWP ID, and band ID. The beam ID includes a reference signal ID. The reference signal ID includes at least one of the following: SSB ID, CSI-RS ID, PRS ID, and SRS ID.

[0127] In one example, the first and second signaling signals do not carry a PCI indication field, or the first and second signaling signals carry a PCI indication field and the PCI indication field is empty; or at least one of the first and second signaling signals carries a PCI indication field and the PCI indication field is not empty or the PCI indicated by the PCI indication field is the same as the PCI of the current first beam coverage area. For example, when the handover scenario is an intra-cell handover scenario, that is, when the physical cell identifiers before and after the handover are the same, the first and second signaling signals do not carry a PCI indication field, or at least one of the first and second signaling signals carries a PCI indication field and the PCI indication field is empty, and the terminal implicitly knows that the PCI of the second beam coverage area after the handover is the same as the PCI of the current first beam coverage area; or at least one of the first and second signaling signals carries a PCI indication field and the PCI indicated by the PCI indication field is the same as the PCI of the current first beam coverage area, and the terminal explicitly knows that the PCI of the second beam coverage area after the handover is the same as the PCI of the current first beam coverage area. When the handover scenario is an inter-cell handover scenario, that is, when the physical cell identifiers before and after the handover are different, at least one of the first signaling and the second signaling carries a PCI indication field and the PCI indication field is not empty. The PCI carried by the PCI indication field is different from the PCI of the current first beam coverage area.

[0128] In one example, the first and second signaling messages do not carry a satellite ID indication field; or, the first and second signaling messages carry a satellite ID indication field and the satellite ID indication field is empty or the satellite ID carried in the satellite ID indication field is the same as the satellite ID of the current first beam coverage area; or, at least one of the first and second signaling messages carries a satellite ID indication field and the satellite ID indication field is not empty. For example, when the handover scenario is an intra-satellite handover scenario, that is, when the satellite IDs before and after the handover are the same, the first and second signaling messages do not carry a satellite indication field; or, the first and second signaling messages carry a satellite indication field and the satellite indication field is empty, and the terminal implicitly knows that the satellites of the second beam coverage area after the handover are the same as the satellites of the current first beam coverage area; or, at least one of the first and second signaling messages carries a satellite ID indication field and the satellite ID carried in the satellite ID indication field is the same as the satellite ID of the current first beam coverage area, and the terminal explicitly knows that the satellite IDs of the second beam coverage area after the handover are the same as the satellite IDs of the current first beam coverage area. When the switching scenario is an inter-satellite switching scenario, that is, when the satellite IDs before and after the switching are different, at least one of the first signaling and the second signaling carries a satellite indication field and the satellite indication field is not empty. The satellite ID carried in the satellite ID indication field is different from the satellite ID of the current first beam coverage area.

[0129] In one example, at least one of the first and second signaling also carries a new Timing Advance (TA). This TA indicates either an absolute value or a relative value, which can be relative to the TA corresponding to the current first beam coverage area or relative to a common TA. Optionally, this TA can also be carried in the second RRC signaling, but the value of the TA can differ for different second beam coverage areas.

[0130] In one example, at least one of the first and second signaling messages also carries a duration of T, which instructs the terminal to complete the handover within T duration after receiving the first and second signaling messages. That is, starting from the first symbol or time slot after time T, the terminal will use the target spectrum resources and / or target beam direction to transmit and receive signaling and / or data. Optionally, the duration of T is in units of symbols or time slots. The SCS is based on the SCS of the signaling spectrum resources in the target spectrum resources. This duration of T can also be carried in the second RRC signaling, but the value of T may differ for different second beam coverage areas.

[0131] In one example, at least one of the first and second signaling is also used to indicate random access related information to the terminal. That is, the first and second signaling indicate whether the terminal needs to undergo a random access procedure, illustratively including the following indication methods:

[0132] a) Clearly indicate whether a random access procedure is required;

[0133] b) Implicit indication of whether a random access procedure is required. For example, in handover scenarios where the physical cell identifier or satellite ID is the same before and after the handover, a random access procedure may not be required; otherwise, in handover scenarios where the physical cell identifier or satellite ID is different before and after the handover, a random access procedure is required.

[0134] c) Implicit indication of whether a random access procedure is required. For example, if the TA and T durations are indicated, a random access procedure is not required; if these two pieces of information are not indicated, a random access procedure is required, even in handover scenarios where the physical cell identifier or satellite ID is the same before and after the handover. The random access procedure can be a contention-based or non-contention-based procedure. If the fourth RRC signaling indicates a random access preamble, it is a non-contention-based random access procedure; otherwise, it is a contention-based random access procedure.

[0135] d) Implicit indication of whether a random access procedure is required. For example, if the MAC signaling indicates only one of the four target information types, a random access procedure is not required; if the MAC signaling indicates more than one of the four target information types, a random access procedure is required.

[0136] In one example, at least one of the first and second signaling methods is also used to indicate the ID of the second beam coverage area. The second beam coverage area is the target beam coverage area after the handover. If the ID of the second beam coverage area corresponds one-to-one with all the above information, then only the ID of the second beam coverage area needs to be indicated, and the target spectrum resources, target beam, physical cell identifier, satellite identifier ID, TA, T, whether a random access procedure is required, etc., can be obtained accordingly. Alternatively, if the ID of the second beam coverage area corresponds one-to-one with a portion of the information, then the corresponding information does not need to be indicated. Or, the ID of the reference signal used for beam measurement is the ID of the second beam coverage area, because satellites use different beams to transmit different reference signals, and each reference signal has a different ID, so the reference signal ID determines the area of ​​the second beam coverage area ID. Therefore, only the ID of the target beam can be indicated, and the corresponding target frequency domain resources can be obtained accordingly.

[0137] Regarding the second scenario mentioned above, taking the first signaling message including the fourth RRC signaling message and the second signaling message including the DCI signaling message as an example:

[0138] Simply replace the MAC signaling in the example above with DCI; further details are omitted.

[0139] Regarding the third scenario mentioned above, taking the first signaling message including the fourth RRC signaling message and the second signaling message including MAC signaling message and DCI signaling message as an example:

[0140] Among the four types of information—target signaling spectrum resources, target data spectrum resources, target signaling beam, and target data beam—at least one type of target information is a fourth RRC signaling, MAC signaling, and DCI signaling coordination indication, and the remaining target information is a fourth RRC signaling indication.

[0141] Optionally, the fourth RRC signaling, DCI signaling, and MAC signaling carry ID information. This ID information includes at least one of the following: resource ID of the target signaling spectrum resource, resource ID of the target data spectrum resource, beam ID of the target signaling beam, and beam ID of the target data beam. The resource information corresponding to the resource ID, and the reference signal information corresponding to the beam ID, are both provided by... Figure 5 and Figure 6 The second and / or third RRC signaling shown may provide advance indication, or may be indicated by the fourth RRC signaling.

[0142] Optionally, the fourth RRC signaling and at least one of the first, second, and third RRC signaling can be the same RRC signaling or different RRC signaling.

[0143] Optionally, if there are more than one target information that is a DCI signaling indication, it can be the same DCI signaling indication or different DCI signaling indications. If the same DCI signaling indication is for at least two target information, it can be coordinated and indicated by MAC signaling. For example, if the spectrum resource used in the second beam coverage area is BWP#0 and the beam direction used is SSB#0, then the MAC signaling provides a mapping relationship. For example, the mapping relationship shows that the indication meaning corresponding to the 3-bit DCI bit codeword 001 is that the spectrum resource is BWP#0 and the beam direction is SSB#0. Or, if the signaling beam direction used in the second beam coverage area is SSB#1 and the data beam direction is CSI-RS#0, then the MAC signaling provides a mapping relationship. For example, the mapping relationship shows that the indication meaning corresponding to the 3-bit DCI bit codeword 010 is that the signaling beam direction is SSB#1 and the data beam direction is CSI-RS#0.

[0144] Optionally, if more than one target message is indicated by the fourth RRC signaling, then it is either the same fourth RRC signaling or different fourth RRC signaling. Alternatively, they can all be called fourth RRC signaling, but the fourth RRC signaling can actually contain multiple RRC messages.

[0145] Optionally, at least one of the above-mentioned physical cell identifier, satellite ID, TA, T duration, whether a random access procedure is required, and the ID of the second beam coverage area can also be indicated by at least one of the fourth RRC signaling, DCI signaling, and MAC signaling. In some embodiments, the fourth RRC signaling is preferred for indication; in other embodiments, a combination of at least two of the fourth RRC signaling, DCI signaling, and MAC signaling can be used for coordinated indication. The T duration is used to indicate that the handover completion time is the T duration after receiving the DCI signaling (second signaling). When there are multiple DCI signaling messages, the handover completion time is the T duration after receiving the last DCI signaling message.

[0146] Optionally, the DCI can be any one of the following: common DCI, group common DCI, or UE specific DCI.

[0147] Regarding the fourth scenario mentioned above, taking the first signaling including the fourth RRC signaling and MAC signaling, and the second signaling including DCI signaling as an example:

[0148] Among the four types of information—target signaling spectrum resources, target data spectrum resources, target signaling beam, and target data beam—at least one type of target information is a joint indication of fourth RRC signaling, MAC signaling, and DCI signaling, while the remaining target information is a coordinated indication of fourth RRC signaling and MAC signaling.

[0149] Optionally, the fourth RRC signaling, DCI signaling, and MAC signaling carry ID information. This ID information includes at least one of the following: resource ID of the target signaling spectrum resource, resource ID of the target data spectrum resource, beam ID of the target signaling beam, and beam ID of the target data beam. The specific resource information corresponding to the resource ID, and the specific reference signal information corresponding to the beam ID, are both determined by… Figure 5 and Figure 6 The second and / or third RRC signaling shown may provide advance indication, or may be indicated by the fourth RRC signaling.

[0150] Optionally, the fourth RRC signaling and at least one of the first, second, and third RRC signaling can be the same RRC signaling or different RRC signaling.

[0151] Optionally, if there are more than one target information that is a DCI signaling indication, it can be the same DCI signaling indication or different DCI signaling indications. If the same DCI signaling indication is for at least two target information, it can be coordinated and indicated by MAC signaling. For example, if the spectrum resource used in the second beam coverage area is BWP#0 and the beam direction used is SSB#0, then the MAC signaling provides a mapping relationship. For example, the mapping relationship shows that the indication meaning corresponding to the 3-bit DCI bit codeword 001 is that the spectrum resource is BWP#0 and the beam direction is SSB#0. Or, if the signaling beam direction used in the second beam coverage area is SSB#1 and the data beam direction is CSI-RS#0, then the MAC signaling provides a mapping relationship. For example, the mapping relationship shows that the indication meaning corresponding to the 3-bit DCI bit codeword 010 is that the signaling beam direction is SSB#1 and the data beam direction is CSI-RS#0.

[0152] Optionally, if more than one target information is indicated by the fourth RRC signaling and MAC signaling, then it is indicated by the same fourth RRC signaling or different fourth RRC signaling, and by the same MAC signaling or different MAC signaling. If the same MAC signaling indicates at least two types of target information, then the fourth RRC signaling can provide coordinated indication. For example, if the spectrum resource used in the second beam coverage area is BWP#0 and the beam direction is SSB#0, then the fourth RRC signaling provides a mapping relationship. For example, if parameter group ID 0 indicates that the parameter group parameter is spectrum resource BWP#0 and beam direction is SSB#0, then the bit corresponding to parameter group ID 0 in the MAC signaling is set to "1", which indicates the parameter group with parameter group ID 0, that is, indicating that the spectrum resource is BWP#0 and the beam direction is SSB#0.

[0153] Optionally, at least one of the above-mentioned physical cell identifier, satellite ID, TA, T duration, whether a random access procedure is required, and the ID of the second beam coverage area can also be indicated by at least one of the fourth RRC signaling, DCI signaling, and MAC signaling. In some embodiments, the fourth RRC signaling is preferred for indication; in other embodiments, a combination of at least two of the fourth RRC signaling, DCI signaling, and MAC signaling can be used for coordinated indication. The T duration is used to indicate that the handover completion time is the T duration after receiving the DCI signaling (second signaling). When there are multiple DCI signaling messages, the handover completion time is the T duration after receiving the last DCI signaling message.

[0154] Optionally, the DCI can be any one of a public DCI, a group public DCI, or a UE-specific DCI.

[0155] Step 440: The terminal receives at least two types of signaling, which carry the target spectrum resources and / or target beam direction;

[0156] Step 460: The terminal switches from the serving spectrum resource to the target spectrum resource according to the instruction signaling, and / or switches the serving beam direction to the target beam direction according to the instruction signaling.

[0157] In summary, the method provided in this embodiment, by using at least two signaling methods to collaboratively indicate target information, can employ multiple signaling methods to achieve more reliable communication quality and reduce the amount of information that needs to be indicated in each signaling method.

[0158] Based on Figure 3 or Figure 4 In an optional embodiment, the above method further includes the following steps, such as... Figure 5 As shown:

[0159] Step 520: The network device sends a second RRC signaling message to the terminal device;

[0160] If the resource ID of the first RRC signaling includes a CC ID, the second RRC signaling carries the CC information corresponding to the CC ID. The CC information corresponding to each CC ID includes, but is not limited to, at least one of the following: the frequency location, bandwidth, subcarrier spacing (SCS), and cyclic prefix (CP) of the CC.

[0161] If the resource ID of the first RRC signaling includes a BWP ID, the second RRC signaling carries the BWP information corresponding to the BWP ID. The BWP information for each BWP ID includes, but is not limited to, at least one of the following: the frequency location, bandwidth, SCS, and CP of the BWP.

[0162] If the resource ID of the first RRC signaling includes a frequency band ID, the second RRC signaling carries the frequency band information corresponding to the frequency band ID. The frequency band information for each frequency band ID includes, but is not limited to, at least one of the following: frequency location, bandwidth, SCS, and CP.

[0163] The second RRC signaling is the basis for the first RRC signaling, so it is generally sent to the terminal before the first RRC signaling (but this does not exclude the possibility of sending it after or simultaneously with the first RRC signaling). For example, if the second RRC signaling is given by the handover measurement configuration signaling, then the first RRC signaling is sent after the terminal completes the handover measurement and reports the measurement results to the base station. The base station determines the target spectrum resources and target beam direction based on the measurement results, and then informs the terminal of the target spectrum resources and target beam direction through the first RRC signaling.

[0164] Step 540: The terminal device receives the second RRC signaling sent by the network device.

[0165] Optionally, the fourth RRC signaling may be the same RRC signaling as or different from at least one of the first RRC signaling and the second RRC signaling.

[0166] In summary, the method provided in this embodiment, by sending the second RRC signaling from the network device to the terminal device, can transmit the correspondence between the ID of the target spectrum resource and the frequency domain information to the terminal device in advance, thereby reducing the amount of data that needs to be carried in the first RRC signaling.

[0167] Based on Figure 3 or Figure 4 In an optional embodiment, the above method further includes the following steps, such as... Figure 6 As shown:

[0168] Step 620: The network device sends a third RRC signaling message to the terminal device;

[0169] When the beam ID includes a reference signal ID, such as at least one of the following: SSB ID, Channel-Slate Information Reference Signal (CSI-RS) ID, Sounding Reference Signal (SRS) ID, Position Reference Signal (PRS) ID, etc.

[0170] In addition to the reference signal ID, the beam ID may also include the PCI, Transmission Reception Point (TRP) ID, or satellite ID to indicate which cell, transmission reception point, or satellite the reference signal originates from.

[0171] The third RRC signaling is used to indicate information about the reference signal corresponding to the beam ID, including the time-frequency resource location of the reference signal, port identifier, etc. The third RRC signaling can also be beam measurement configuration signaling. Similarly, the third RRC signaling is sent to the terminal before the first RRC signaling (but the possibility of sending it after or simultaneously with the first RRC signaling is excluded).

[0172] Optionally, the third RRC signaling and the second RRC signaling can be the same RRC signaling or different RRC signaling.

[0173] Step 640: The terminal device receives the third RRC signaling sent by the network device.

[0174] Optionally, the fourth RRC signaling may be the same RRC signaling as or different from the first RRC signaling and the third RRC signaling.

[0175] In summary, the method provided in this embodiment, by sending the third RRC signaling from the network device to the terminal device, can transmit the correspondence between the beam ID and the reference signal information of the target beam direction to the terminal device in advance, thereby reducing the amount of data that needs to be carried in the first RRC signaling.

[0176] Figure 7 A flowchart illustrating a measurement configuration method for a terminal according to an illustrative embodiment of this application is shown. This method can be... Figure 1 The method is executed by the aforementioned communication system. The method includes:

[0177] Step 720: The network device sends the measurement configuration of the adjacent beam coverage area to the terminal;

[0178] The measurement configuration is used to instruct measurements to be taken over adjacent beam coverage areas. Optionally, the measurement configuration includes at least one of the following configurations:

[0179] • Physical cell identifiers for adjacent beam coverage areas;

[0180] Optionally, an Intra-cell refers to a cell whose physical cell identifier is the same as the current first beam coverage area, so the PCI and / or satellite ID do not need to be indicated for this type of first beam coverage area. Optionally, the measurement configuration includes the cell identifiers of adjacent beam coverage areas of the inter-cell, i.e., the PCI and / or satellite ID.

[0181] • Satellite identifiers for adjacent beam coverage areas;

[0182] Optionally, the measurement configuration also includes intra-satellite information. Intra-satellite refers to the first beam coverage area and the second beam coverage area being within the coverage range of the same satellite, or at least having the same satellite ID, so the satellite ID does not need to be indicated. Optionally, the measurement configuration also includes inter-satellite information. Inter-satellite refers to the first beam coverage area and the second beam coverage area being within the coverage range of different satellites.

[0183] • Frequency domain resource information of adjacent beam coverage areas;

[0184] Frequency domain resource information includes at least one of the following: CC, BWP.

[0185] Frequency domain resource information includes at least one of the following: frequency domain resource ID, frequency point location of frequency domain resource, bandwidth of frequency domain resource, subcarrier spacing (SCS), and cyclic prefix (CP).

[0186] The frequency domain resource ID is either CC ID or BWP ID; the frequency location and bandwidth of the frequency domain resource include CC location and bandwidth or BWP location and bandwidth.

[0187] If the frequency domain resource reuse factor is 1, meaning the frequency domain resources are the same, then the frequency domain resources do not need to be indicated; if the frequency domain resource reuse factor is greater than 1, meaning the frequency domain resources are different, then the frequency domain resources also need to be indicated. The frequency domain resource information includes: CC ID, CC location and bandwidth, subcarrier spacing, CP; and / or BWP ID, BWP location and bandwidth, subcarrier spacing, CP.

[0188] Satellite information;

[0189] • Information about BWP;

[0190] In one example, the measurement configuration includes information about the adjacent beam coverage areas of the intra-cell. The measurement configuration also includes information about the intra-BWP. Intra-BWP refers to situations where the frequency domain resources of the first beam coverage areas are the same; in this case, the frequency domain resources may not be indicated. In another example, the measurement configuration also includes information about the inter-BWP. Inter-BWP refers to situations where the frequency domain resources of the first beam coverage areas are different; in this case, the measurement configuration includes BWP information (BWP ID, BWP location and bandwidth, SCS, CP).

[0191] CC information;

[0192] In one example, the measurement configuration also includes intra-CC information. Intra-CC means that the frequency domain resources of the first beam coverage area are the same, so the frequency domain resources do not need to be indicated; only the PCI or satellite ID needs to be indicated.

[0193] Intra-CC can also refer to the same CC, but using different BWPs under the same CC. In this case, BWP information also needs to be carried, including BWP ID, BWP location and bandwidth, and SCS.

[0194] In one example, the measurement configuration also includes inter-CC information. Inter-CC refers to different frequency domain resources within the first beam coverage area. If different CCs are used directly, the measurement configuration includes: CC information (CCID, CC location and bandwidth, SCS), PCI, or satellite ID. Inter-CC indicates different frequency domain resources within the first beam coverage area. If a BWP from a different CC is used, the measurement configuration, in addition to CC information, PCI, or satellite ID, also needs to carry BWP information, including BWP ID, BWP location and bandwidth, and SCS. Alternatively, the measurement configuration can directly indicate the BWP information.

[0195] • Information about the reference signal used for beam measurement;

[0196] In one example, the measurement configuration also includes: a reference signal ID for beam measurement in the first beam coverage area, as well as the time-frequency resource location of the reference signal, port ID, etc.

[0197] • Measurement time interval.

[0198] If the frequency domain resources of the first beam coverage area are different from those of the first beam coverage area (e.g., inter-BWP, inter-CC, inter-frequency), or if the frequency domain resources are the same but the SCS are different, then the measurement configuration must also include the configuration of the measurement gap. That is, the terminal must perform measurements within the measurement gap and cannot conduct normal uplink and downlink communication with the network equipment in the current first beam coverage area.

[0199] Optionally, the measurement configuration is carried in the second RRC information or system information. System information, also known as system broadcast, includes several System Information Blocks (SIBs). For example, SIB1 or other system information (such as SIB2, SIB3, SIB4, etc.). Optionally, system information is sent periodically or only after a terminal request.

[0200] Step 740: The terminal receives the measurement configuration of the adjacent beam coverage area sent by the network device.

[0201] In one example, when the terminal measures that the signal quality of the reference signal in the current first beam coverage area is below a threshold (system information or second RRC signaling indication), the terminal reports the measurement result of the current first beam coverage area to the base station. The base station instructs the terminal to start measuring the adjacent beam coverage areas according to the measurement configuration of the system information or second RRC signaling.

[0202] In one example, signal quality is represented by the reference signal received power (RSRP) of layer 1 (L1) or layer 3 (L3) or the reference signal received quality (RSRQ) of L1 or L3.

[0203] During the measurement process, the terminal can use receive beam scanning to receive reference signals from adjacent beam coverage areas and find the most suitable receive beam.

[0204] When the reference signal in the adjacent beam coverage area meets the triggering condition (system information or second RRC signaling indication), the terminal reports the measurement result.

[0205] In summary, the method provided in this embodiment allows the network device to send a measurement configuration to the terminal, the terminal to perform measurements according to the measurement configuration, and then the terminal to report the measurement results to the network device. This enables the terminal in the connected state to measure different beam coverage areas, providing reference information for the network device during the switching of the indicated beam coverage area.

[0206] The above embodiments can be implemented individually or in combination. The steps performed by the network device in the above embodiments can be implemented as a handover indication method on the network device side, and the steps performed by the terminal can be implemented as a handover method on the terminal side.

[0207] It should be noted that the "second beam coverage area after switching" in this article refers to the target beam coverage area during the beam coverage area switching process. It is used to indicate that the terminal is about to switch to the second beam coverage area, and does not mean that it has already switched to the second beam coverage area.

[0208] Figure 8 This application illustrates a switching device for a terminal according to an exemplary embodiment. The device can be applied in a terminal, and the device includes:

[0209] The receiving module 820 is used to receive indication signaling, which is used to indicate target communication resources;

[0210] The switching module 840 is used to switch from the serving communication resource to the target communication resource according to the instruction signaling.

[0211] In one alternative design of this application, the indication signaling is used to indicate at least one of a target spectrum resource and a target beam direction; the switching module 840 is used to switch from the serving spectrum resource to the target spectrum resource according to the indication signaling; or, the switching module 840 is used to switch the serving beam direction to the target beam direction according to the indication signaling; or, the switching module 840 is used to switch from the serving spectrum resource to the target spectrum resource according to the indication signaling, and to switch the serving beam direction to the target beam direction according to the indication signaling.

[0212] In an alternative design of this application, the indication signaling indicates a first spectrum resource; the device corresponds to a signaling beam and a data beam;

[0213] The switching module 840 is used to switch the service spectrum resource corresponding to the signaling beam and / or the service spectrum resource corresponding to the data beam to the first spectrum resource according to the instruction signaling.

[0214] In an optional design of this application, the indication signaling indicates a first spectrum resource and a second spectrum resource; the terminal is configured with a signaling beam and a data beam.

[0215] The switching module 840 is configured to switch the service spectrum resource corresponding to the signaling beam to the first spectrum resource and switch the service spectrum resource corresponding to the data beam to the second spectrum resource according to the instruction signaling.

[0216] In one alternative design of this application, the target spectrum resource may be the same as or different from the serving spectrum resource.

[0217] In an optional design of this application, the indication signaling indicates a first beam direction; the terminal is configured with a signaling beam and a data beam;

[0218] The switching module 840 is used to switch the service beam direction corresponding to the signaling beam and / or the service beam direction corresponding to the data beam to the first beam direction according to the indication signaling.

[0219] In one optional design of this application, the indication signaling indicates a first beam direction and a second beam direction; the terminal is configured with a signaling beam and a data beam;

[0220] The switching module 840 is configured to switch the service beam direction corresponding to the signaling beam to the first beam direction and switch the service beam direction corresponding to the data beam to the second beam direction according to the instruction signaling.

[0221] In one alternative design of this application, the target beam direction may be the same as or different from the service beam direction.

[0222] In an optional design of this application, the indication signaling is used to indicate N sets of target spectrum resources and / or target beam directions corresponding to N switching, where N is an integer greater than or equal to 1.

[0223] In an optional design of this application, N is an integer greater than 1; the indication signaling further includes the time interval between two adjacent handovers.

[0224] In an optional design of this application, the terminal stores the correspondence between spectrum resources and beam directions, and the device further includes:

[0225] The determining module 660 is used to determine the beam ID of the target beam direction based on the resource ID and the correspondence when the indication signaling carries the resource ID of the target spectrum resource;

[0226] The determination module 660 is used to determine the resource ID of the target spectrum resource based on the beam ID and the correspondence when the indication signaling carries the beam ID of the target beam direction.

[0227] In one optional design of this application, the target spectrum resource includes at least one of downlink spectrum resources and uplink spectrum resources; the target beam direction includes at least one of downlink beam direction and uplink beam direction.

[0228] In an optional design of this application, the receiving module 820 is configured to receive a first RRC signaling, the first RRC signaling being used to indicate at least one of the target spectrum resource and the target beam direction.

[0229] In an optional design of this application, the first RRC signaling is a handover indication signaling; the handover indication signaling carries at least one of the following identifiers:

[0230] Resource ID of the first spectrum resource;

[0231] Resource ID of the second spectrum resource;

[0232] Beam ID in the first beam direction;

[0233] Beam ID in the second beam direction.

[0234] In an optional design of this application, the receiving module 820 is used to receive a second RRC signaling;

[0235] Wherein, the resource ID includes a CC ID, and the second RRC signaling carries the CC information corresponding to the CC ID; or, the resource ID includes a BWP ID, and the second RRC signaling carries the BWP information corresponding to the BWP ID; or, the resource ID includes a frequency band ID, and the second RRC signaling carries the frequency band information corresponding to the frequency band ID.

[0236] In an optional design of this application, the receiving module 820 is used to receive a third RRC signaling, the third RRC signaling carrying reference signal information corresponding to the reference signal ID.

[0237] In one optional design of this application, the first RRC signaling does not carry a PCI indication field, or the first RRC signaling carries the PCI indication field and the PCI indication field is empty; or the first RRC signaling carries the PCI indication field and the PCI carried by the PCI indication field is the same as the PCI of the current first beam coverage area; or the first RRC signaling carries the PCI indication field and the PCI indication field is not empty, and the PCI carried by the PCI indication field is different from the PCI of the current first beam coverage area.

[0238] In one optional design of this application, the first RRC signaling does not carry a satellite ID indication field; or, the first RRC signaling carries the satellite ID indication field and the satellite ID indication field is empty; or, the first RRC signaling carries the satellite ID indication field and the satellite ID carried in the satellite ID indication field is the same as the satellite ID of the current first beam coverage area; or, the first RRC signaling carries the satellite ID indication field and the satellite ID indication field is not empty, and the satellite ID carried in the satellite ID indication field is different from the satellite ID of the current first beam coverage area.

[0239] In an optional design of this application, the first RRC signaling also carries TA value information.

[0240] In an optional design of this application, the first RRC signaling also carries a duration of T, which is used to indicate that the terminal completes the handover within a duration of T after receiving the first RRC signaling.

[0241] In an optional design of this application, the first RRC signaling is also used to indicate random access related information to the terminal.

[0242] In an optional design of this application, the first RRC signaling is also used to indicate the ID of the second beam coverage area.

[0243] In an optional design of this application, the target spectrum resource includes: target signaling spectrum resource and / or target data spectrum resource; the target beam direction includes: target signaling beam and / or target data beam;

[0244] The receiving indication signaling includes:

[0245] Receive at least two types of signaling, which are used to coordinately indicate target information. The target information includes at least one of four types of information: target signaling spectrum resources, target data spectrum resources, target signaling beam, and target data beam.

[0246] In an optional design of this application, the at least two signaling methods include a first signaling method and a second signaling method;

[0247] The first signaling includes fourth RRC signaling, and the second signaling includes MAC signaling; or, the first signaling includes the fourth RRC signaling, and the second signaling includes DCI signaling; or, the first signaling includes the fourth RRC signaling, and the second signaling includes the MAC signaling and the DCI signaling; or, the first signaling includes the fourth RRC signaling and the MAC signaling, and the second signaling includes the DCI signaling.

[0248] In an optional design of this application, the first information in the target information is jointly indicated by the first signaling and the second signaling;

[0249] The remaining information in the target information, excluding the first information, is indicated by the first signaling.

[0250] In an optional design of this application, the first signaling and the second signaling do not carry a PCI indication field, or at least one of the first signaling and the second signaling carries the PCI indication field and the PCI indication field is empty; or

[0251] At least one of the first signaling and the second signaling carries the PCI indication field and the PCI indication field is not empty.

[0252] In an optional design of this application, the first signaling and the second signaling do not carry a satellite ID indication field, or, at least one of the first signaling and the second signaling carries the satellite ID indication field and the satellite ID indication field is empty; or

[0253] At least one of the first signaling and the second signaling carries the satellite ID indication field and the satellite ID indication field is not empty.

[0254] In an alternative design of this application, at least one of the first signaling and the second signaling also carries a new TA.

[0255] In an optional design of this application, at least one of the first signaling and the second signaling also carries a duration of T, which is used to indicate that the terminal completes the handover within a duration of T after receiving the signaling.

[0256] In an optional design of this application, at least one of the first signaling and the second signaling is further used to indicate random access related information to the terminal.

[0257] In an alternative design of this application, at least one of the first signaling and the second signaling is also used to indicate the ID of the second beam coverage area after the switch.

[0258] In an optional design of this application, the receiving module 820 is used to receive the measurement configuration of adjacent beam coverage areas;

[0259] Measurement module 880 is used to measure the adjacent beam coverage area according to the measurement configuration.

[0260] In an optional design of this application, the measurement configuration includes at least one of the following configurations:

[0261] The physical cell identifier of the adjacent beam coverage area;

[0262] Satellite identifiers for adjacent beam coverage areas;

[0263] Frequency domain resource information of the adjacent beam coverage area.

[0264] Satellite information;

[0265] Information about BWP;

[0266] CC's information;

[0267] Information for the reference signal used in beam measurement;

[0268] Measurement time interval.

[0269] In an alternative design of this application, the measurement configuration is carried in a second RRC signaling or system information.

[0270] The device in this embodiment is also used to perform the various steps executed by the terminal in the above method embodiment, and to send various information. The two can be referenced each other, and will not be described in detail here.

[0271] Figure 9 This application illustrates a handover apparatus for a terminal according to an exemplary embodiment. This apparatus can be applied in a network device, and the apparatus includes:

[0272] The sending module 920 is used to send an indication signaling to the terminal, the indication signaling being used to indicate a target communication resource.

[0273] In an optional design of this embodiment, the target spectrum resources and / or target beam direction are considered. Optionally, the terminal is a connected terminal.

[0274] In an optional design of this embodiment, the target spectrum resource may be the same as or different from the service spectrum resource of the terminal; the target beam direction may be the same as or different from the service beam direction of the terminal.

[0275] In an optional design of this embodiment, the indication information indicates at least one of the following:

[0276] First spectrum resource;

[0277] Second spectrum resources;

[0278] First beam direction;

[0279] Second beam direction.

[0280] In an optional design of this embodiment, the indication signaling is used to indicate N sets of target spectrum resources and / or target beam directions corresponding to N switching, where N is an integer greater than or equal to 1.

[0281] In an optional design of this embodiment, N is an integer greater than 1; the indication signaling also includes the time interval between two adjacent handovers.

[0282] In an optional design of this embodiment, the sending module 920 is used to send a first RRC signaling to the terminal, the first RRC signaling carrying the indication signaling.

[0283] In an optional design of this embodiment, the first RRC signaling is a handover indication signaling; the handover indication signaling carries at least one of the following identifiers:

[0284] Resource ID of the first spectrum resource;

[0285] Resource ID of the second spectrum resource;

[0286] Beam ID in the first beam direction;

[0287] Beam ID in the second beam direction.

[0288] In an optional design of this embodiment, the sending module 920 is used to send a second RRC signaling to the terminal;

[0289] Wherein, the resource ID includes a CC ID, and the second RRC signaling carries the CC information corresponding to the CC ID; or, the resource ID includes a BWP ID, and the second RRC signaling carries the BWP information corresponding to the BWP ID; or, the resource ID includes a frequency band ID, and the second RRC signaling carries the frequency band information corresponding to the frequency band ID.

[0290] In an optional design of this embodiment, the sending module 920 is used to send a third RRC signaling to the terminal, the third RRC signaling carrying reference signal information corresponding to the reference signal ID.

[0291] In an optional design of this embodiment, the target spectrum resource includes: target signaling spectrum resource and / or target data spectrum resource; the target beam direction includes: target signaling beam and / or target data beam;

[0292] The transmitting module 920 is used to transmit at least two types of signaling to the terminal. The at least two types of signaling are used to coordinately indicate target information. The target information includes at least one of four types of information: target signaling spectrum resources, target data spectrum resources, target signaling beam, and target data beam.

[0293] In an optional design of this embodiment, the at least two signaling methods include a first signaling method and a second signaling method;

[0294] The first signaling includes fourth RRC signaling, and the second signaling includes MAC signaling; or, the first signaling includes the fourth RRC signaling, and the second signaling includes DCI signaling; or, the first signaling includes the fourth RRC signaling, and the second signaling includes the MAC signaling and the DCI signaling; or, the first signaling includes the fourth RRC signaling and the MAC signaling, and the second signaling includes the DCI signaling.

[0295] In an optional design of this embodiment, the first information in the target information is jointly indicated by the first signaling and the second signaling; the remaining information in the target information other than the first information is indicated by the first signaling.

[0296] In an optional design of this embodiment, the transmitting module 920 is used to transmit a measurement configuration of the adjacent beam coverage area to the terminal, the measurement configuration being used to instruct the measurement of the adjacent beam coverage area.

[0297] In an optional design of this embodiment, the measurement configuration includes at least one of the following configurations:

[0298] The physical cell identifier of the adjacent beam coverage area;

[0299] Satellite identifiers for adjacent beam coverage areas;

[0300] Frequency domain resource information of the adjacent beam coverage area.

[0301] Satellite information;

[0302] Information about BWP;

[0303] CC's information;

[0304] Information for the reference signal used in beam measurement;

[0305] Measurement time interval.

[0306] In an alternative design of this application, the measurement configuration is carried in a second RRC signaling or system information.

[0307] The apparatus in this embodiment is also used to perform the various steps executed by the network device in the above method embodiment, and to send various information. The two can be referenced each other and will not be described in detail here.

[0308] Figure 10 The diagram shows a schematic representation of a communication device (network device or terminal) provided in an exemplary embodiment of this application. The communication device includes a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.

[0309] The processor 101 includes one or more processing cores. The processor 101 executes various functional applications and information processing by running software programs and modules.

[0310] The receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.

[0311] The memory 104 is connected to the processor 101 via the bus 105.

[0312] The memory 104 can be used to store at least one instruction, and the processor 101 can execute the at least one instruction to implement the various steps in the above method embodiments.

[0313] Furthermore, the memory 104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0314] In an exemplary embodiment, a computer-readable storage medium is also provided, which stores at least one instruction, at least one program, code set, or instruction set, wherein the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the handover method for a terminal executed by the terminal or the handover indication method for a terminal executed by the network device provided in the above-described method embodiments.

[0315] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0316] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for switching terminals, characterized in that, The method is executed by a terminal configured with a signaling beam and a data beam, and the method includes: Receive a second Radio Resource Control (RRC) signaling message, the second RRC signaling message carrying a measurement configuration for adjacent beam coverage areas, the measurement configuration including physical cell identifier, satellite identifier, frequency domain resource information and measurement time interval, the physical cell identifier is used to distinguish intra-cell handover scenarios or inter-cell handover scenarios, the satellite identifier is used to distinguish intra-satellite handover scenarios or inter-satellite handover scenarios, the frequency domain resource information includes member carrier (CC) information or bandwidth portion (BWP) information; If the signal quality of the reference signal in the current beam coverage area is lower than the threshold indicated by the second RRC signaling, the measurement result of the current beam coverage area is reported to the base station. The adjacent beam coverage area is measured based on the measurement configuration indicated by the base station; The system receives a first RRC signaling message, which is a handover command. This handover command indicates the target spectrum resource and target beam direction. It carries timing advance (TA) information, duration (T) information, and the time interval between two adjacent handovers. The target spectrum resource includes N groups of target spectrum resources corresponding to N handovers, where N is an integer greater than or equal to 1. Each group of target spectrum resources includes a first spectrum resource and a second spectrum resource. The target beam direction includes a first beam direction. The handover command carries the following identifiers: the resource ID of the first spectrum resource, the resource ID of the second spectrum resource, and the beam ID of the first beam direction. The resource ID includes the CC ID corresponding to the CC information or the BWP ID corresponding to the BWP information. When the handover command carries the timing advance (TA) information and duration (T) information, it also implicitly indicates that the terminal does not need to perform a random access procedure. According to the handover instruction signaling, starting from the first time slot after the duration T, the service spectrum resource corresponding to the signaling beam is switched to the first spectrum resource, the service spectrum resource corresponding to the data beam is switched to the second spectrum resource, and the service beam direction corresponding to the signaling beam and the service beam direction corresponding to the data beam are switched to the first beam direction.

2. The method according to claim 1, characterized in that, The target spectrum resource may be the same as or different from the service spectrum resource.

3. The method according to claim 1, wherein the terminal stores a correspondence between spectrum resources and beam directions, and the method further includes: When the handover indication signaling carries the resource identifier ID of the target spectrum resource, the beam ID of the target beam direction is determined according to the resource ID and the correspondence. When the switching indication signaling carries the beam identifier ID of the target beam direction, the resource ID of the target spectrum resource is determined according to the beam ID and the correspondence.

4. The method according to any one of claims 1 to 3, The target spectrum resources include at least one of downlink spectrum resources and uplink spectrum resources.

5. The method according to claim 1, characterized in that, The first RRC signaling does not carry the Physical Cell Identifier (PCI) indication field; or, the first RRC signaling carries the PCI indication field and the PCI indication field is empty; or, the first RRC signaling carries the PCI indication field and the PCI carried in the PCI indication field is the same as the PCI of the current first beam coverage area; or, the first RRC signaling carries the PCI indication field and the PCI indication field is not empty, but the PCI carried in the PCI indication field is different from the PCI of the current first beam coverage area.

6. The method according to claim 1, characterized in that, The first RRC signaling does not carry a satellite ID indication field; or, the first RRC signaling carries the satellite ID indication field and the satellite ID indication field is empty; or, the first RRC signaling carries the satellite ID indication field and the satellite ID carried in the satellite ID indication field is the same as the satellite ID of the current first beam coverage area; or, the first RRC signaling carries the satellite ID indication field and the satellite ID indication field is not empty, but the satellite ID carried in the satellite ID indication field is different from the satellite ID of the current first beam coverage area.

7. The method according to claim 1, characterized in that, The first RRC signaling is also used to indicate the ID of the second beam coverage area after the handover.

8. The method according to any one of claims 1 to 3, characterized in that, The receiving of the first RRC signaling includes: Receive at least two types of signaling, the at least two types of signaling being used to coordinately indicate the first spectrum resource, the second spectrum resource, and the first beam direction, the at least two types of signaling including RRC signaling.

9. The method according to claim 8, characterized in that, The at least two types of signaling include a first signaling and a second signaling; The first signaling includes fourth Radio Resource Control (RRC) signaling, and the second signaling includes Media Access Control (MAC) signaling; or, The first signaling includes the fourth RRC signaling, and the second signaling includes downlink control information (DCI) signaling; or, The first signaling includes the fourth RRC signaling, and the second signaling includes the MAC signaling and the DCI signaling; or, The first signaling includes the fourth RRC signaling and the MAC signaling, and the second signaling includes the DCI signaling.

10. The method according to claim 9, characterized in that, The first signaling and the second signaling do not carry the Physical Cell Identifier (PCI) indication field; or, at least one of the first signaling and the second signaling carries the PCI indication field and the PCI indication field is empty; or, the first RRC signaling carries the PCI indication field and the PCI carried by the PCI indication field is the same as the PCI of the current first beam coverage area; or, the first RRC signaling carries the PCI indication field and the PCI indication field is not empty, and the PCI carried by the PCI indication field is different from the PCI of the current first beam coverage area.

11. The method according to claim 9, characterized in that, The first signaling and the second signaling do not carry a satellite identifier (ID) field; or, at least one of the first signaling and the second signaling carries the satellite ID field and the satellite ID field is empty; or, the first RRC signaling carries the satellite ID field and the satellite ID carried in the satellite ID field is the same as the satellite ID of the current first beam coverage area; or, the first RRC signaling carries the satellite ID field and the satellite ID field is not empty, but the satellite ID carried in the satellite ID field is different from the satellite ID of the current first beam coverage area.

12. The method according to claim 9, characterized in that, At least one of the first signaling and the second signaling also carries the TA value information.

13. The method according to claim 9, characterized in that, At least one of the first signaling and the second signaling also carries the duration T, which is used to instruct the terminal to complete the handover within a duration T after receiving the signaling.

14. The method according to claim 9, characterized in that, At least one of the first and second signaling is also used to indicate the ID of the second beam coverage area after the switch.

15. A handover indication method for a terminal, characterized in that, The method is performed by a network device, and the method includes: Send a second Radio Resource Control (RRC) signaling message to the terminal. The second RRC signaling message carries the measurement configuration of the adjacent beam coverage area. The measurement configuration includes physical cell identifier, satellite identifier, frequency domain resource information and measurement time interval. The physical cell identifier is used to distinguish between intra-cell handover scenarios or inter-cell handover scenarios. The satellite identifier is used to distinguish between intra-satellite handover scenarios or inter-satellite handover scenarios. The frequency domain resource information includes member carrier (CC) information or bandwidth portion (BWP) information. The terminal receives the measurement results of the current beam coverage area reported by the terminal, wherein the measurement results of the current beam coverage area are reported by the terminal when the signal quality of the reference signal of the current beam coverage area is lower than the threshold indicated by the second RRC signaling. A first RRC signaling is sent to the terminal, which is configured with a signaling beam and a data beam. The first RRC signaling is a handover command, which indicates the target spectrum resource and the target beam direction. The handover command carries timing advance (TA) value information, duration (T) information, and the time interval between two adjacent handovers. The target spectrum resource includes N groups of target spectrum resources corresponding to N handovers, where N is an integer greater than or equal to 1. Each group of target spectrum resources includes a first spectrum resource and a second spectrum resource. The target beam direction includes a first beam direction. The handover command carries the following identifiers: the resource ID of the first spectrum resource, the resource ID of the second spectrum resource, and the beam ID of the first beam direction. The resource ID includes the CC ID corresponding to the CC information or the BWP corresponding to the BWP information. ID; when the handover indication signaling carries timing advance TA value information and T duration information, the handover indication signaling also implicitly indicates that the terminal does not need to perform a random access procedure; the first spectrum resource is used for the signaling beam handover, the second spectrum resource is used for the data beam handover, the first beam direction is used for the signaling beam and the data beam handover, and the T duration information is used to indicate that the terminal completes the handover within the T duration.

16. The method according to claim 15, characterized in that, The target spectrum resource may be the same as or different from the service spectrum resource of the terminal.

17. The method according to claim 15 or 16, characterized in that, The step of sending the first RRC signaling to the terminal includes: At least two types of signaling are sent to the terminal, the at least two types of signaling being used to coordinately indicate the first spectrum resource, the second spectrum resource, and the first beam direction, the at least two types of signaling including RRC signaling.

18. The method according to claim 17, characterized in that, The at least two types of signaling include a first signaling and a second signaling; The first signaling includes fourth RRC signaling, and the second signaling includes MAC signaling; or, The first signaling includes the fourth RRC signaling, and the second signaling includes DCI signaling; or, The first signaling includes the fourth RRC signaling, and the second signaling includes the MAC signaling and the DCI signaling; or, The first signaling includes the fourth RRC signaling and the MAC signaling, and the second signaling includes the DCI signaling.

19. A switching device for a terminal, characterized in that, The device is equipped with a signaling beam and a data beam, and the device includes: The receiving module is used to receive a second Radio Resource Control (RRC) signaling, which carries a measurement configuration for adjacent beam coverage areas. The measurement configuration includes a physical cell identifier, a satellite identifier, frequency domain resource information, and a measurement time interval. The physical cell identifier is used to distinguish between intra-cell handover scenarios and inter-cell handover scenarios. The satellite identifier is used to distinguish between intra-satellite handover scenarios and inter-satellite handover scenarios. The frequency domain resource information includes member carrier (CC) information or bandwidth portion (BWP) information. The transmitting module is used to report the measurement results of the current beam coverage area to the base station when the signal quality of the reference signal in the measured current beam coverage area is lower than the threshold indicated by the second RRC signaling. A measurement module is configured to measure the adjacent beam coverage area based on the measurement configuration indicated by the base station; The receiving module is further configured to receive a first RRC signaling, which is a handover command. The handover command indicates the target spectrum resource and target beam direction. It carries timing advance (TA) value information, duration (T) information, and the time interval between two adjacent handovers. The target spectrum resource includes N groups of target spectrum resources corresponding to N handovers, where N is an integer greater than or equal to 1. Each group of target spectrum resources includes a first spectrum resource and a second spectrum resource. The target beam direction includes a first beam direction. The handover command carries the following identifiers: the resource ID of the first spectrum resource, the resource ID of the second spectrum resource, and the beam ID of the first beam direction. The resource ID includes the CC ID corresponding to the CC information or the BWP ID corresponding to the BWP information. When the handover command carries timing advance (TA) value information and duration (T) information, it also implicitly indicates that the terminal does not need to perform a random access procedure. The switching module is configured to, according to the switching instruction signaling, start from the first time slot after the duration T, switch the service spectrum resource corresponding to the signaling beam to the first spectrum resource, switch the service spectrum resource corresponding to the data beam to the second spectrum resource, and switch the service beam direction corresponding to the signaling beam and the service beam direction corresponding to the data beam to the first beam direction.

20. A switching indication device for a terminal, characterized in that, The device includes: The transmitting module is used to send a second Radio Resource Control (RRC) signaling to the terminal. The second RRC signaling carries the measurement configuration of the adjacent beam coverage area. The measurement configuration includes physical cell identifier, satellite identifier, frequency domain resource information and measurement time interval. The physical cell identifier is used to distinguish between intra-cell handover scenarios and inter-cell handover scenarios. The satellite identifier is used to distinguish between intra-satellite handover scenarios and inter-satellite handover scenarios. The frequency domain resource information includes member carrier (CC) information or bandwidth portion (BWP) information. The receiving module is used to receive the measurement results of the current beam coverage area reported by the terminal. The measurement results of the current beam coverage area are reported by the terminal when the signal quality of the reference signal of the current beam coverage area is lower than the threshold indicated by the second RRC signaling. The transmitting module is further configured to send a first RRC signaling to the terminal. The terminal is configured with a signaling beam and a data beam. The first RRC signaling is a handover command, which indicates the target spectrum resource and the target beam direction. The handover command carries timing advance (TA) value information, duration (T) information, and the time interval between two adjacent handovers. The target spectrum resource includes N groups of target spectrum resources corresponding to N handovers, where N is an integer greater than or equal to 1. Each group of target spectrum resources includes a first spectrum resource and a second spectrum resource. The target beam direction includes a first beam direction. The handover command carries the following identifiers: the resource ID of the first spectrum resource, the resource ID of the second spectrum resource, and the beam ID of the first beam direction. The resource ID includes the CC ID corresponding to the CC information or the BWP corresponding to the BWP information. ID; when the handover indication signaling carries timing advance TA value information and T duration information, the handover indication signaling also implicitly indicates that the terminal does not need to perform a random access procedure; the first spectrum resource is used for the signaling beam handover, the second spectrum resource is used for the data beam handover, the first beam direction is used for the signaling beam and the data beam handover, and the T duration information is used to indicate that the terminal completes the handover within the T duration.

21. A terminal, characterized in that, The terminal includes: processor; A transceiver connected to the processor; Memory for storing the executable instructions of the processor; The processor is configured to load and execute the executable instructions to implement the terminal switching method as described in any one of claims 1 to 14.

22. A network device, characterized in that, The network device includes: processor; A transceiver connected to the processor; Memory for storing the executable instructions of the processor; The processor is configured to load and execute the executable instructions to implement the handover indication method for a terminal as described in any one of claims 15 to 18.

23. A computer-readable storage medium, characterized in that, The readable storage medium stores executable instructions, which are loaded and executed by a processor to implement the handover method for a terminal as described in any one of claims 1 to 14, or the handover indication method for a terminal as described in any one of claims 15 to 18.

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