Wireless communication method and apparatus

Abstract

Provided are a wireless communication method and device, the method comprising: switching a bandwidth part, BWP, of a terminal device based on a channel quality measurement result or a handover command for a serving satellite beam and a neighboring satellite beam. Different satellite beams can be configured with different bandwidth parts, BWPs, in the same cell, which means that different BWPs can be used to distinguish between neighboring satellite beams. Furthermore, the mobility of the terminal device and the mobility of the satellite are taken into account, and the bandwidth part, BWP, of the terminal device is switched based on a channel quality measurement result or a handover command for a serving satellite beam and a neighboring satellite beam, which ensures that the terminal device can switch BWPs during movement relative to the satellite, thereby improving the user experience.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method and device. BACKGROUND

[0002] Currently, the 3rd Generation Partnership Project (3GPP) is studying Non Terrestrial Network (NTN) technology, which can provide communication services to ground users in the form of satellite communication. Compared with ground cellular network communication, satellite communication has many unique advantages.

[0003] Firstly, satellite communication is not limited by the user's region. For example, general terrestrial communication cannot cover oceans, high mountains, deserts and other areas where communication equipment cannot be set up or where communication coverage is not provided due to sparse population. However, for satellite communication, a satellite can cover a large area of the ground, and the satellite can orbit the earth, so theoretically every corner of the earth can be covered by satellite communication. Secondly, satellite communication has great social value. Satellite communication can cover remote mountainous areas, poor countries or regions at a low cost, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting the development of these areas. Thirdly, satellite communication has a long distance, and the cost of communication does not increase significantly as the communication distance increases. Finally, satellite communication has high stability and is not limited by natural disasters.

[0004] A satellite beam is the smallest unit of a satellite covering the earth's surface, corresponding to different directions. Generally, a satellite covers the earth's surface through hundreds of satellite beams. These satellite beams can be deployed as different cells or in the same cell. Considering the possible co-frequency interference between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, that is, adjacent satellite beams use different frequency points / carriers / frequency bands to distinguish.

[0005] However, how to distinguish adjacent satellite beams using different frequency points / carriers / frequency bands and how terminal devices implement frequency point / carrier / frequency band switching are problems that need to be solved in the field. SUMMARY

[0006] Provided are a wireless communication method and device, by configuring different bandwidth parts (BWP) in the same cell for different satellite beams, which can be used to distinguish adjacent satellite beams; in addition, considering the mobility of the terminal device and the mobility of the satellite, the BWP switching of the terminal device during the movement relative to the satellite can be ensured, and the user experience is improved.

[0007] In a first aspect, a wireless communication method is provided, comprising:

[0008] Switching the bandwidth part (BWP) of the terminal device based on the channel quality measurement result or the switching command for the serving satellite beam and the adjacent satellite beam.

[0009] In a second aspect, a wireless communication method is provided, comprising:

[0010] Receiving the first indication information or sending the switching command based on the channel quality measurement result for the serving satellite beam and the adjacent satellite beam, the switching command being used to instruct the terminal device to switch the bandwidth part (BWP), and the first indication information being used to indicate that the terminal device has completed the BWP switching.

[0011] In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or each implementation manner thereof. Specifically, the terminal device comprises a function module used to execute the method in the first aspect or each implementation manner thereof.

[0012] In a fourth aspect, a network device is provided, which is used to execute the method in the second aspect or each implementation manner thereof. Specifically, the network device comprises a function module used to execute the method in the second aspect or each implementation manner thereof.

[0013] In a fifth aspect, a terminal device is provided, comprising a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or each implementation manner thereof.

[0014] In a sixth aspect, a network device is provided, comprising a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect or each implementation manner thereof.

[0015] In a seventh aspect, a chip is provided for implementing the method in any one of the first aspect to the second aspect or each implementation manner thereof. Specifically, the chip comprises a processor configured to invoke and run a computer program from a memory, so that a device installed with the chip performs the method in any one of the first aspect to the second aspect or each implementation manner thereof.

[0016] In an eighth aspect, a computer readable storage medium is provided for storing a computer program, which causes a computer to perform the method in any one of the first aspect to the second aspect or each implementation manner thereof.

[0017] In a ninth aspect, a computer program product is provided, comprising computer program instructions, which cause a computer to perform the method in any one of the first aspect to the second aspect or each implementation manner thereof.

[0018] In a tenth aspect, a computer program is provided, which, when running on a computer, causes the computer to perform the method in any one of the first aspect to the second aspect or each implementation manner thereof.

[0019] Based on the above technical solutions, different satellite beams can be configured with different bandwidth parts (BWPs) in the same cell, i.e., different BWPs can be used to distinguish adjacent satellite beams to reduce the same-frequency interference between adjacent satellite beams. In addition, considering the mobility of the terminal device and the mobility of the satellite, the bandwidth part (BWP) of the terminal device is switched based on the channel quality measurement result or the switching command for the serving satellite beam and the adjacent satellite beam, which can ensure the BWP switching of the terminal device during the movement relative to the satellite, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figures 1 to 3 is an example of an application scenario of the present application.

[0021] Figure 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

[0022] Figure 5 is a schematic flowchart of a wireless communication method based on a trigger condition provided by an embodiment of the present application.

[0023] Figure 6 and Figure 7 is a schematic diagram of a trigger condition provided by an embodiment of the present application.

[0024] Figure 8 is a schematic flowchart of a wireless communication method based on a switching criterion provided by an embodiment of the present application.

[0025] Figure 9And Figure 10 is a schematic diagram of a handover criterion provided by an embodiment of the present application.

[0026] Figure 11 is a schematic flow chart of another wireless communication method provided by an embodiment of the present application.

[0027] Figure 12 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

[0028] Figure 13 is a schematic block diagram of a network device provided by an embodiment of the present application.

[0029] Figure 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.

[0030] Figure 15 is a schematic block diagram of a chip provided by an embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0032] Figure 1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0033] As Figure 1 shown, the communication system 100 can include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 through an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0034] It should be understood that the embodiments of the present application are only exemplarily described with the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), a 5G communication system (also referred to as a New Radio (NR) communication system), or a future communication system, etc.

[0035] In Figure 1In the illustrated communication system 100, the network device 120 can be an access network device that communicates with the terminal device 110. The access network device can provide communication coverage for a specific geographic area, and can communicate with the terminal device 110 (e.g., UE) located in the coverage area.

[0036] The network device 120 can be an evolved node B (eNB or eNodeB) in a long term evolution (LTE) system, or a next generation radio access network (NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a cloud radio access network (CRAN), or a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (PLMN) and the like.

[0037] The terminal device 110 can be any terminal device, including but not limited to a terminal device that uses wired or wireless connection with the network device 120 or other terminal devices.

[0038] For example, the terminal device 110 can refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved network, and the like.

[0039] The terminal device 110 can be used for device to device (D2D) communication.

[0040] The wireless communication system 100 can further include a core network device 130 in communication with the base station, which can be a 5G core network (5GC) device, e.g., an Access and Mobility Management Function (AMF), e.g., an Authentication Server Function (AUSF), e.g., a User Plane Function (UPF), e.g., a Session Management Function (SMF). Alternatively, the core network device 130 can also be an Evolved Packet Core (EPC) device of an LTE network, e.g., a Session Management Function + Core Packet Gateway (SMF + PGW-C) device. It should be understood that the SMF + PGW-C can implement the functions of both the SMF and the PGW-C. In the process of network evolution, the above-mentioned core network device can also be called by other names, or new network entities can be formed by dividing the functions of the core network, which is not limited by the embodiments of the present application.

[0041] The various functional units in the communication system 100 can also be connected and communicate through a next generation (NG) interface.

[0042] For example, the terminal device establishes an air interface connection with the access network device through the NR interface, which is used to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access network device, e.g., a next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (N3 for short); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (N4 for short); the UPF can interact with the data network to transmit user plane data through the NG interface 6 (N6 for short); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (N11 for short); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

[0043] Figure 1Exemplarily, one base station, one core network device and two terminal devices are shown, optionally, the wireless communication system 100 can include multiple base station devices and each base station can include other numbers of terminal devices in its coverage, which is not limited in the embodiments of the present application.

[0044] Figure 2 Another schematic diagram of an architecture of a communication system provided by the embodiments of the present application is shown.

[0045] As shown in Figure 2 , the terminal device 1101 and the satellite 1102 are included, and the terminal device 1101 and the satellite 1102 can perform wireless communication. The network formed between the terminal device 1101 and the satellite 1102 can also be referred to as NTN. In the architecture of the communication system shown in Figure 2 , the satellite 1102 can have the function of a base station, and the terminal device 1101 and the satellite 1102 can directly communicate. Under the system architecture, the satellite 1102 can be referred to as a network device. In some embodiments of the present application, multiple network devices 1102 can be included in the communication system, and each network device 1102 can include other numbers of terminal devices in its coverage, which is not limited in the embodiments of the present application.

[0046] Figure 3 Another schematic diagram of an architecture of a communication system provided by the embodiments of the present application is shown.

[0047] As shown in Figure 3 , the terminal device 1201, the satellite 1202 and the base station 1203 are included, the terminal device 1201 and the satellite 1202 can perform wireless communication, and the satellite 1202 and the base station 1203 can communicate. The network formed between the terminal device 1201, the satellite 1202 and the base station 1203 can also be referred to as NTN. In the architecture of the communication system shown in Figure 3 , the satellite 1202 can not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be relayed through the satellite 1202. Under this kind of system architecture, the base station 1203 can be referred to as a network device. In some embodiments of the present application, multiple network devices 1203 can be included in the communication system, and each network device 1203 can include other numbers of terminal devices in its coverage, which is not limited in the embodiments of the present application. The network device 1203 can be Figure 1 a network device 120 in

[0048] It should be understood that the above satellite 1102 or satellite 1202 includes but is not limited to:

[0049] Low-Earth Orbit (LEO) satellite, Medium-Earth Orbit (MEO) satellite, Geostationary Earth Orbit (GEO) satellite, High Elliptical Orbit (HEO) satellite, etc. Satellites can adopt multi-beam to cover the ground, for example, a satellite can form dozens or even hundreds of beams to cover the ground. In other words, one satellite beam can cover a ground area with a diameter of dozens to hundreds of kilometers to ensure the coverage of the satellite and improve the system capacity of the entire satellite communication system.

[0050] As an example, the altitude range of LEO can be 500km-1500km, and the corresponding orbit period can be about 1.5 hours-2 hours, the signal propagation delay of single-hop communication between users can generally be less than 20ms, and the maximum satellite visible time can be 20 minutes. The signal propagation distance of LEO is short and the link loss is small, and the transmission power requirement of the user terminal is not high. The orbit altitude of GEO can be 35786km, and the rotation period around the earth can be 24 hours. The signal propagation delay of single-hop communication between users can generally be 250ms.

[0051] It should be noted that, Figures 1 to 3 The system to which the application is applied is only shown in the form of an example, and of course, the method shown in the embodiments of the application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this paper. The term "and / or" in this paper is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents an "or" relationship between the associated objects. It should also be understood that the "indication" mentioned in the embodiments of the application can be direct indication or indirect indication, and can also represent an associated relationship. For example, A indicates B, which can mean that B can be obtained through A; or it can mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or it can mean that A and B have an associated relationship.

[0052] In order to facilitate understanding of the scheme of the application, the switching mechanism of NR BWP is described below.

[0053] 5G NR further increases the system bandwidth on the basis of 4G to provide greater data transmission rate and improve user experience.

[0054] In 5G NR, for sub-6GHz frequency bands, the maximum bandwidth supported by a single carrier is 100MHz; for above-6GHz frequency bands, the maximum bandwidth supported by a single carrier is 400MHz. For a large carrier bandwidth, such as 100HMz, the bandwidth that the terminal needs to use is often very limited. If the terminal is always required to detect and measure on the entire bandwidth, it will bring great challenges to the terminal power consumption, which is not conducive to terminal power saving. Therefore, the concept of BWP is introduced in 5G NR, that is, a part of the continuous bandwidth in the entire large bandwidth carrier is divided for the terminal to perform data transmission and reception. The terminal only needs to perform related operations in the bandwidth configured by the network, thereby achieving the effect of terminal energy saving.

[0055] Based on the 5G NR Rel-15 standard, for each serving cell of the terminal, the network RRC can configure one or more BWPs for the terminal on this serving cell, and the maximum number of configurable BWPs is 4. At each time, the terminal can only have 1 activated DL BWP and 1 activated UL BWP on this serving cell, and the terminal can only perform data transmission and reception on the activated BWP. Considering the diversity of terminal services and the difference in different service characteristics, the terminal may have the need to adjust the BWP. For example, when the terminal traffic is large and hopes to obtain high-speed service, a large bandwidth BWP needs to be used for data transmission for this terminal. When the terminal traffic is small, a small bandwidth BWP can be used for data transmission for this terminal. The activated BWP of the terminal on this serving cell can be changed by BWP switching. There are currently 4 BWP switching methods supported in the standard:

[0056] 1. PDCCH-based BWP switching.

[0057] Network-controlled BWP switching. The network informs the terminal of the target BWP by sending a PDCCH to the terminal.

[0058] 2. RRC (re)configuration-based BWP switching

[0059] Network-controlled BWP switching. By carrying firstActiveDownlinkBWP-Id or / and firstActiveUplinkBWP-Id in the RRC (re)configuration message, the terminal is instructed to switch the activated BWP to firstActiveDownlinkBWP-Id or / and firstActiveUplinkBWP-Id.

[0060] 3. BWP switching based on timer timeout.

[0061] BWP switching in implicit way. The network side configures a timer bwp-InactivityTimer for each serving cell of the terminal. If the currently activated DL BWP of the terminal is a BWP other than default BWP and initial DL BWP, each time when the terminal receives a PDCCH indicating uplink or downlink scheduling of the UE on the currently activated BWP, or the terminal receives a PDCCH indicating uplink or downlink scheduling of the UE on the currently activated BWP, the timer bwp-InactivityTimer is started or restarted. When the timer bwp-InactivityTimer expires, the terminal automatically switches to the default BWP or the initial DL BWP, wherein the default BWP and the initial BWP are determined by RRC configuration.

[0062] 4. BWP switching caused by random access initialization.

[0063] In the RACH initialization process, if the terminal does not configure PRACH occasion on the currently activated UL BWP, the terminal automatically switches the UL BWP to the initial UL BWP, and switches the DL BWP to the initial DL BWP.

[0064] Figure 4 A schematic flowchart of a wireless communication method 200 according to embodiments of the application is shown, which can be performed by a terminal device. Figure 2 The terminal device shown in FIG. 1 can be a terminal device as shown in Figures 1 to 3 FIG. 2.

[0065] As shown in Figure 4 The method 200 can include:

[0066] S210, switching a BWP of the terminal device based on a channel quality measurement result or a switching command for a serving satellite beam and a neighboring satellite beam.

[0067] For example, the terminal device switches an uplink BWP and / or a downlink BWP of the terminal device based on the channel quality measurement result or the switching command.

[0068] For example, different satellite beams can be configured with different bandwidth parts (BWPs) in the same cell, based on which different BWPs can be used to distinguish adjacent satellite beams to reduce co-frequency interference between adjacent satellite beams. In addition, considering the mobility of the terminal device and the mobility of the satellite, based on the channel quality measurement results or the handover command for the serving satellite beam and the adjacent satellite beam, the bandwidth part (BWP) of the terminal device is switched, which can ensure that the terminal device performs BWP switching during movement relative to the satellite, thereby improving user experience.

[0069] It should be understood that switching the BWP can be understood as switching the activated BWP of the terminal device from the current BWP to the target BWP. For example, the terminal device switches the activated uplink BWP from the current BWP to the target uplink BWP. For another example, the terminal device switches the activated downlink BWP to the target downlink BWP.

[0070] In some embodiments of the present application, the S210 can include:

[0071] The switching command includes an identifier of the target BWP.

[0072] Switching the BWP of the terminal device to the target BWP.

[0073] For example, after the terminal device obtains the switching command, the terminal device switches the BWP of the terminal device to the target BWP based on the identifier of the target BWP in the switching command. In other words, the terminal device determines whether to switch the BWP of the terminal device based on the judgment of the network device.

[0074] In some embodiments of the present application, the switching command further includes an identifier of a target satellite beam and / or information indicating the effective time of the switching command.

[0075] For example, the switching command further includes an identifier of a target satellite beam, and the terminal device switches the BWP of the terminal device to the target BWP associated with the target satellite beam based on the identifier of the target satellite beam and the identifier of the target BWP. For another example, the switching command does not include the identifier of the target satellite beam, and the terminal device switches the BWP of the terminal device to the target BWP based on a set of SSBs associated with the target BWP. Optionally, the set of SSBs associated with the target BWP can be configured by the network device.

[0076] In other words, after receiving the switching command, the terminal device does not immediately perform BWP switching, but waits until the effective time to perform BWP switching. Of course, the switching command can also directly include information of the effective time. The effective time can also be referred to as an execution time or an execution time of BWP switching. The effective time can be a time point or a time period.

[0077] In some embodiments of the present application, the method 200 can further include:

[0078] obtaining first information for configuring a trigger condition for the terminal device to report the channel quality measurement result;

[0079] if the trigger condition is met, sending the channel quality measurement result.

[0080] For example, after the terminal device obtains the first information, the terminal device determines whether to report the channel quality measurement result to the network device based on the trigger condition configured based on the first information. The network device sends the switching command to the terminal device based on the channel quality measurement result reported by the terminal device.

[0081] In other words, the network device configures the trigger condition. If the trigger condition is met, the terminal device sends the channel quality measurement result to assist the network device in making a decision on BWP switching.

[0082] In some embodiments of the present application, the trigger condition includes that the channel quality of the terminal device on the adjacent satellite beam is higher than the channel quality of the terminal device on the serving satellite beam by a first relative threshold.

[0083] In some embodiments of the present application, the trigger condition includes that the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a first absolute threshold, and the channel quality of the terminal device on the serving satellite beam is less than or equal to a second absolute threshold.

[0084] In some embodiments of the present application, the switching command is carried by a physical downlink control channel (PDCCH) or a media access control (MAC) control element (CE).

[0085] Figure 5 FIG. 3 is a schematic flowchart of a wireless communication method 300 based on the trigger condition provided by an embodiment of the present application. Figure 6 and Figure 7These are schematic diagrams illustrating the triggering conditions in embodiments of this application. The following, in conjunction with... Figures 5 to 7 An exemplary description is provided for a wireless communication method based on the aforementioned triggering conditions.

[0086] like Figure 5 As shown, the method 300 may include some or all of the following:

[0087] S310, the network device sends satellite beam configuration to the terminal device.

[0088] For example, the terminal device receives system messages used to configure relevant information about satellite beams. This information may include, but is not limited to, information about multiple satellite beams, the association between these multiple satellite beams and SSBs, and multiple initial BWPs. Each of the multiple satellite beams may be associated with one or more SSBs, and one SSB is associated with only one satellite beam. Optionally, each initial BWP is associated with one satellite beam.

[0089] S320, the network device sends first information to the terminal device to configure the triggering conditions for the terminal device to report channel quality measurement results.

[0090] For example, the terminal device receives RRC configuration measurement information sent by the network device. This RRC configuration measurement information is used to configure relevant parameters for BWP and satellite beam measurements. For example, the RRC configuration measurement information includes, but is not limited to, information about multiple BWPs and the triggering conditions for a measurement event X of the reported satellite beam. Optionally, the measurement event X may be acquiring or measuring a channel quality measurement. For example, the channel quality measurement may be any one or at least one of Signal-to-Interference plus Noise Ratio (SINR), Reference Signal-Receiving Power (RSRP), and Reference Signal-Receiving Quality (RSRQ).

[0091] In other words, the terminal device can perform SSB measurements based on the RRC configuration measurement information and calculate the measurement results of each satellite beam. Specifically, for a specific satellite beam, the measurement results of the satellite beam can be generated using the measurement results of multiple SSBs associated with that satellite beam.

[0092] As an example, the trigger condition can refer to that a difference between a channel quality of the terminal device on a neighbor satellite beam and a channel quality of the terminal device on a serving satellite beam is higher than a first signal relative threshold in a duration T1. The duration T1 in which the trigger condition is met and the first relative threshold can be configured or preset. For example, the duration T1 in which the trigger condition is met or the first relative threshold can be configured by a network device through RRC. In other words, the terminal device determines whether the trigger condition is met based on measurement results of satellite beams, and then reports the channel quality measurement results to the network device in a case where the trigger condition is met.

[0093] For example, if there is at least one neighbor satellite beam that meets the trigger condition of the reporting measurement event X, i.e., a difference between a channel quality of the terminal device on a first neighbor satellite beam and a channel quality of the terminal device on a serving satellite beam is higher than a first signal relative threshold in a duration T1, the terminal device reports channel quality measurement results to a network device. The first neighbor satellite beam can be any one of the at least one neighbor satellite beam. Optionally, the channel quality measurement results can include an identification (ID) of the at least one neighbor satellite beam, measurement results of channel qualities of the terminal device on the serving satellite beam and the neighbor satellite beam, etc. For example, in Figure 6 In the example of FIG. 2, a difference between a channel quality of the terminal device on the neighbor satellite beam 1 and a channel quality of the terminal device on the serving satellite beam is higher than the first signal relative threshold in T1, and thus the terminal device reports the channel quality measurement results to the network device. The channel quality measurement results can include an ID of the neighbor satellite beam 1 and measurement results of channel qualities of the terminal device on the serving satellite beam and the neighbor satellite beam 1, etc. Of course, similar determination can be made for the neighbor satellite beam 2 to determine whether to report an ID of the neighbor satellite beam 2 and measurement results of channel qualities of the neighbor satellite beam 2.

[0094] As another example, the trigger condition can refer to that, within a duration T2, the channel quality of the terminal device on a neighboring satellite beam is higher than a first absolute threshold, and the channel quality of the terminal device on a serving satellite beam is lower than a second absolute threshold. The duration T2, the first absolute threshold and the second absolute threshold satisfying the trigger condition can be configured or preset. For example, the duration T2, the first absolute threshold or the second absolute threshold satisfying the trigger condition can be configured by the network device through RRC. The first absolute threshold can be greater than or equal to the second absolute threshold. The terminal device determines whether the trigger condition is satisfied based on the measurement result of the satellite beam, and then reports the channel quality measurement result to the network device in the case that the trigger condition is satisfied.

[0095] For example, if there is at least one neighboring satellite beam satisfying the trigger condition of the reporting measurement event X, i.e., within a duration T2, the channel quality of the terminal device on a neighboring satellite beam is higher than a first absolute threshold, and the channel quality of the terminal device on a serving satellite beam is lower than a second absolute threshold, the terminal device reports the channel quality measurement result to the network device. The first neighboring satellite beam can be any one of the at least one neighboring satellite beam. Optionally, the channel quality measurement result can include the identification (ID) of the at least one neighboring satellite beam, the measurement result of the channel quality of the terminal device on the serving satellite beam and the neighboring satellite beam, etc. For example, in Figure 7 For example, in

[0096] S330, the terminal device sends the channel quality measurement result to the network device.

[0097] S340, the network device sends a handover command (including the identification of the target BWP) to the terminal device.

[0098] That is, the terminal device receives a handover command sent by the network device after sending the channel quality measurement result to the network device. In other words, the network device determines a target BWP for the terminal device to hand over according to the channel quality measurement result from the terminal device, and sends the handover command to the terminal device. For example, the handover command can include a target BWP ID for handover; optionally, the handover command can also include a target satellite beam ID for handover and / or a validity time of the handover command; optionally, the handover command is carried by a MAC CE or a PDCCH.

[0099] S350, the terminal device switches the BWP of the terminal device to the target BWP.

[0100] For example, if the handover command includes the validity time of the handover command, the terminal device does not immediately perform BWP switching, but waits until the validity time to perform BWP switching. For another example, if the handover command does not include the validity time of the handover command, the terminal device performs BWP switching immediately after receiving the handover command.

[0101] In some embodiments of the present application, the S210 can include:

[0102] obtaining second information used to configure a handover criterion for the terminal device to hand over a BWP;

[0103] handing over the BWP of the terminal device if the channel quality measurement result meets the handover criterion.

[0104] In other words, after the terminal device obtains the handover criterion, the terminal device can directly determine whether to hand over the BWP of the terminal device based on the handover criterion.

[0105] In some embodiments of the present application, the handover criterion includes that a difference between the channel quality of the terminal device on the adjacent satellite beam and the channel quality of the terminal device on the serving satellite beam is greater than or equal to a second relative threshold.

[0106] In some embodiments of the present application, the handover criterion is that the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a third absolute threshold, and the channel quality of the terminal device on the serving satellite beam is less than or equal to a fourth absolute threshold.

[0107] In some embodiments of the present application, a plurality of beams in the adjacent satellite beam meet the handover criterion, and the method 200 can further include:

[0108] determining a target satellite beam from the plurality of beams;

[0109] switching a BWP of the terminal device to a default BWP associated with the target satellite beam.

[0110] In some embodiments of the present application, the target satellite beam is a beam with the highest channel quality among the plurality of beams; and / or the target satellite beam is a beam with the largest number of target synchronization signals / physical broadcast channel (SSB) among the plurality of beams, the target SSB being an SSB with a channel quality greater than or equal to a fifth absolute threshold.

[0111] In some embodiments of the present application, the method 200 can further include:

[0112] sending first indication information, the first indication information being used to indicate that the terminal device has completed BWP switching.

[0113] For example, initiating a random access channel (RACH) on a switched uplink (UL) BWP to indicate that the terminal device has completed BWP switching. For another example, sending a sounding reference signal (SRS) on a switched uplink UL BWP to indicate that the terminal device has completed BWP switching. For another example, configuring a configuration grant (CG) on a switched uplink UL BWP; sending a BWP switching MAC CE on the CG, the BWP switching MAC CE being used to indicate that the terminal device has completed BWP switching.

[0114] Figure 8 is a schematic flowchart of a wireless communication method 400 provided by an embodiment of the present application based on the switching criterion. Figure 9 and Figure 10 are schematic diagrams of the switching criterion of an embodiment of the present application. The following will be described in combination with Figures 8 to 10 The wireless communication method based on the triggering condition is exemplarily described.

[0115] As Figure 8 shown, the method 400 can include some or all of the following:

[0116] S410, the network device sends a satellite beam configuration to the terminal device.

[0117] For example, the terminal device receives a system message, where the system message is used to configure information related to a satellite beam. For example, the information related to the satellite beam includes but is not limited to: information of a plurality of satellite beams, association relationship between the plurality of satellite beams and SSBs, and a plurality of initial BWPs. Each satellite beam in the plurality of satellite beams can be associated with one or more SSBs, and one SSB is only associated with one satellite beam. Optionally, each initial BWP is associated with one satellite beam.

[0118] S420, the network device sends second information to the terminal device, where the second information is used to configure switching criteria for the terminal device to switch a BWP.

[0119] S430, if the channel quality measurement result meets the switching criteria, the terminal device switches the BWP of the terminal device.

[0120] For example, the terminal device receives RRC configuration measurement information sent by the network device, where the RRC configuration measurement information is used to configure parameters related to BWP and satellite beam measurement. For example, the RRC configuration measurement information includes but is not limited to: information of a plurality of BWPs and switching criteria based on a measurement event X. Optionally, the measurement event X can be to acquire or measure a channel quality measurement quantity. For example, the channel quality measurement quantity can be any one or at least one of: signal to interference plus noise ratio (SINR), reference signal receiving power (RSRP), and reference signal receiving quality (RSRQ).

[0121] In other words, the terminal device can perform SSB measurement based on the RRC configuration measurement information, and calculate measurement results of each satellite beam. Specifically, for a specific satellite beam, the measurement result of the satellite beam can be generated by using measurement results of a plurality of SSBs associated with the satellite beam.

[0122] As an example, the switching criterion can refer to that a difference between a channel quality of the terminal device on a neighboring satellite beam and a channel quality of the terminal device on a serving satellite beam is higher than a second relative threshold in a duration T3. The duration T3 in which the trigger condition is satisfied and the second relative threshold can be configured or preset. For example, the duration T3 in which the trigger condition is satisfied or the second relative threshold can be configured by a network device through RRC. In other words, the terminal device judges whether the switching criterion is satisfied based on measurement results of satellite beams, and then directly switches BWP of the terminal device to a default BWP associated with a target neighboring satellite beam in a case where the switching criterion is satisfied, for example, the terminal device simultaneously switches an uplink BWP and a downlink BWP to the default BWP associated with the target neighboring satellite beam.

[0123] For example, if there is at least one neighboring satellite beam satisfying a trigger condition of the reporting measurement event X, that is, a difference between a channel quality of the terminal device on a second neighboring satellite beam and a channel quality of the terminal device on a serving satellite beam is higher than a second relative threshold in a duration T3, the terminal device switches BWP of the terminal device to a default BWP on the second neighboring satellite beam. The second neighboring satellite beam can be any one of the at least one neighboring satellite beam. For example, the second neighboring satellite beam is a beam with the highest channel quality in the at least one neighboring satellite beam; and / or the second neighboring satellite beam is a beam with the largest number of target SSBs in the at least one neighboring satellite beam, the target SSB being an SSB with a channel quality greater than or equal to a fifth absolute threshold.

[0124] In other words, the terminal device selects a satellite beam with the highest channel quality from a plurality of satellite beams satisfying the switching criterion, and simultaneously switches an uplink BWP and a downlink BWP to a default BWP associated with the selected satellite beam. For another example, the terminal device selects a satellite beam with the largest number of first SSBs from a plurality of satellite beams satisfying the switching criterion, and simultaneously switches an uplink BWP and a downlink BWP to a default BWP associated with the selected satellite beam. The first SSB is an SSB with a channel quality higher than a certain threshold. Of course, how the terminal device selects a satellite beam from a plurality of satellite beams satisfying the switching criterion can also depend on implementation of the terminal device, that is, the terminal device can simultaneously switch an uplink BWP and a downlink BWP to a default BWP associated with a selected satellite beam based on its own implementation.

[0125] For example, in a case where the terminal device is in a connected state, the terminal device can be configured to report measurement results of satellite beams to a network device through a measurement report, and the network device can be configured to determine whether the terminal device switches BWP based on the measurement results of the satellite beams reported by the terminal device. Figure 9In some embodiments, the difference between the channel quality of the terminal device on the neighboring satellite beam 1 and the channel quality of the terminal device on the serving satellite beam is higher than a second relative threshold within a time period T1, the terminal device switches to a default BWP on the neighboring satellite beam 1. Of course, similar judgment can be made for the neighboring satellite beam 2 to determine whether to switch to a default BWP on the neighboring satellite beam 2.

[0126] As another example, the switching criterion can refer to that the channel quality of the terminal device on the neighboring satellite beam is higher than a third absolute threshold and the channel quality of the terminal device on the serving satellite beam is lower than a fourth absolute threshold within a time period T4. The time period T4, the third absolute threshold and the fourth absolute threshold can be configured or preset. For example, the time period T4, the third absolute threshold or the fourth absolute threshold can be configured by the network device through RRC. The third absolute threshold can be greater than or equal to the fourth absolute threshold. The terminal device judges whether the switching criterion is met based on the measurement results of the satellite beams, and then directly switches the BWP of the terminal device when the switching criterion is met, for example, the terminal device simultaneously switches the uplink BWP and the downlink BWP to a default BWP associated with the target neighboring satellite beam.

[0127] For example, if there is at least one neighboring satellite beam that meets the trigger condition of the reporting measurement event X, that is, the channel quality of the terminal device on the neighboring satellite beam is higher than the third absolute threshold and the channel quality of the terminal device on the serving satellite beam is lower than the fourth absolute threshold within a time period T4, the terminal device switches the BWP of the terminal device to a default BWP on the second neighboring satellite beam. The second neighboring satellite beam can be any one of the at least one neighboring satellite beam. For example, the second neighboring satellite beam is the beam with the highest channel quality among the at least one neighboring satellite beam; and / or the second neighboring satellite beam is the beam with the most target SSBs among the at least one neighboring satellite beam, the target SSB is the SSB with a channel quality greater than or equal to a fifth absolute threshold.

[0128] In other words, the terminal device selects one satellite beam with the highest channel quality from the multiple satellite beams satisfying the switching criterion, and simultaneously switches the uplink BWP and the downlink BWP to a default BWP associated with the selected satellite beam. For another example, the terminal device selects one satellite beam with the largest number of first SSBs from the multiple satellite beams satisfying the switching criterion, and simultaneously switches the uplink BWP and the downlink BWP to a default BWP associated with the selected satellite beam. The first SSB is an SSB with a channel quality higher than a certain threshold. Of course, how the terminal device selects one satellite beam from the multiple satellite beams satisfying the switching criterion can also depend on the implementation of the terminal device, i.e., the terminal device can simultaneously switch the uplink BWP and the downlink BWP to a default BWP associated with the selected satellite beam based on its own implementation.

[0129] For example, in the case of Figure 10 In the case of, for example, in a time duration T4, the channel quality of the terminal device on the adjacent satellite beam 1 is higher than a third absolute threshold, and the channel quality of the terminal device on the serving satellite beam is lower than a fourth absolute threshold, the terminal device switches to the default BWP on the adjacent satellite beam 1. Of course, a similar judgment can also be made for the adjacent satellite beam 2 to determine whether to switch to the default BWP on the adjacent satellite beam 2.

[0130] S440, the terminal device sends first indication information to the network device, and the first indication information is used to indicate that the terminal device has completed BWP switching.

[0131] For example, after the terminal device completes the BWP switching triggered by the terminal device based on the switching criterion, the terminal device sends a BWP switching completion indication to the network device. For example, the terminal device initiates RACH on the new UL BWP, so that the network device knows that the terminal device has switched the BWP. For another example, the terminal device sends SRS on the new UL BWP, so that the network device knows that the terminal device has switched the BWP. For another example, if the terminal device is configured with CG on the new UL BWP, the terminal device sends a BWP switch MAC CE on the CG, so that the network device knows that the terminal device has switched the BWP. Optionally, if the terminal device is not configured with CG on the new UL BWP, the terminal device initiates RACH on the new UL BWP.

[0132] The preferred embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details in the above-described embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application. For example, in the case where various specific technical features described in the above-described specific embodiments can be combined in any appropriate manner without contradiction, in order to avoid unnecessary repetition, various possible combination manners are not described again in the present application. For another example, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed in the present application.

[0133] It should also be understood that, in various method embodiments of the present application, the magnitude of the serial number of the above-described processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink" and "uplink" are used to represent the transmission direction of signals or data, wherein "downlink" is used to represent the transmission direction of signals or data as the first direction from the station to the user equipment of the cell, and "uplink" is used to represent the transmission direction of signals or data as the second direction from the user equipment of the cell to the station, for example, "downlink signal" represents the transmission direction of the signal as the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely used to describe the association relationship of the associated objects, and indicates that there can be three relationships. Specifically, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0134] The wireless communication method according to the embodiments of the present application is described in detail from the perspective of a terminal device above, and the wireless communication method according to the embodiments of the present application will be described below from the perspective of a network device. Figures 4 to 10 The wireless communication method according to the embodiments of the present application is described in detail from the perspective of a terminal device above, and the wireless communication method according to the embodiments of the present application will be described below from the perspective of a network device. Figure 11 The wireless communication method according to the embodiments of the present application is described in detail from the perspective of a terminal device above, and the wireless communication method according to the embodiments of the present application will be described below from the perspective of a network device.

[0135] Figure 11 A schematic flowchart of a wireless communication method 500 according to the embodiments of the present application is shown. The method 500 can be performed by a network device, which can be an access network device as shown in Figure 1 or Figure 3 , or a satellite as shown in Figure 12 or Figure 3 .

[0136] As shown in Figure 11 , the method 500 can include:

[0137] S510, receiving first indication information or sending a switching command based on a channel quality measurement result for a serving satellite beam and an adjacent satellite beam, the switching command being used to instruct a terminal device to switch a bandwidth part BWP, the first indication information being used to instruct that the terminal device has completed BWP switching.

[0138] In some embodiments of the present application, the switching command comprises an identification of a target BWP.

[0139] In some embodiments of the present application, the switching command further comprises an identification of a target satellite beam and / or information indicating a validity time of the switching command.

[0140] In some embodiments of the present application, the method 500 can further comprise:

[0141] sending first information used to configure a trigger condition for the terminal device to report the channel quality measurement result.

[0142] In some embodiments of the present application, the trigger condition comprises a difference between a channel quality of the terminal device on the adjacent satellite beam and a channel quality of the terminal device on the serving satellite beam being greater than or equal to a first relative threshold.

[0143] In some embodiments of the present application, the trigger condition comprises the channel quality of the terminal device on the adjacent satellite beam being greater than or equal to a first absolute threshold and the channel quality of the terminal device on the serving satellite beam being less than or equal to a second absolute threshold.

[0144] In some embodiments of the present application, the switching command is carried by a physical downlink control channel PDCCH or a medium access control control element MAC CE.

[0145] In some embodiments of the present application, the method 500 can further comprise:

[0146] sending second information used to configure a switching criterion for the terminal device to switch the BWP.

[0147] In some embodiments of the present application, the switching criterion comprises a difference between a channel quality of the terminal device on the adjacent satellite beam and a channel quality of the terminal device on the serving satellite beam being greater than or equal to a second relative threshold.

[0148] In some embodiments of the present application, the switching criterion comprises the channel quality of the terminal device on the adjacent satellite beam being greater than or equal to a third absolute threshold and the channel quality of the terminal device on the serving satellite beam being less than or equal to a fourth absolute threshold.

[0149] In some embodiments of the present application, the receiving the first indication information is configured to indicate that the terminal device has completed the BWP switching by receiving a random access channel (RACH) on the switched uplink (UL) BWP.

[0150] In some embodiments of the present application, the receiving the first indication information is configured to indicate that the terminal device has completed the BWP switching by receiving a sounding reference signal (SRS) on the switched uplink (UL) BWP.

[0151] In some embodiments of the present application, the receiving the first indication information comprises:

[0152] receiving a BWP switching medium access control (MAC) control element (CE) on a configured grant (CG) on the switched uplink (UL) BWP, wherein the BWP MAC CE is configured to indicate that the terminal device has completed the BWP switching.

[0153] It should be understood that the steps in the method 500 can refer to the corresponding steps in the method 200, and for the sake of brevity, will not be repeated here.

[0154] The method embodiments of the present application are described in detail above. Figures 1 to 11 The device embodiments of the present application are described in detail below. Figures 12 to 15 The device embodiments of the present application are described in detail below.

[0155] Figure 12 is a schematic block diagram of a terminal device 600 according to an embodiment of the present application.

[0156] As shown in Figure 12 , the terminal device 600 can include:

[0157] a processing unit 610 configured to switch a bandwidth part (BWP) of the terminal device based on a channel quality measurement result for a serving satellite beam and a neighboring satellite beam or a switching command.

[0158] In some embodiments of the present application, the processing unit 610 is specifically configured to:

[0159] obtain the switching command, wherein the switching command includes an identifier of a target BWP;

[0160] switch the BWP of the terminal device to the target BWP.

[0161] In some embodiments of the present application, the switching command further includes an identifier of a target satellite beam and / or information indicating a valid time of the switching command.

[0162] In some embodiments of the present application, the processing unit 610 is further configured to:

[0163] obtaining first information used for configuring a triggering condition for reporting a channel quality measurement result by the terminal device;

[0164] if the channel quality measurement result meets the triggering condition, sending the channel quality measurement result.

[0165] In some embodiments of the present application, the triggering condition comprises: a difference between the channel quality of the terminal device on the adjacent satellite beam and the channel quality of the terminal device on the serving satellite beam is greater than or equal to a first relative threshold.

[0166] In some embodiments of the present application, the triggering condition comprises: the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a first absolute threshold, and the channel quality of the terminal device on the serving satellite beam is less than or equal to a second absolute threshold.

[0167] In some embodiments of the present application, the handover command is carried by a physical downlink control channel (PDCCH) or a medium access control control element (MAC CE).

[0168] In some embodiments of the present application, the processing unit 610 is specifically configured to:

[0169] obtain second information used for configuring a handover criterion for the terminal device to handover a BWP;

[0170] if the channel quality measurement result meets the handover criterion, handover the BWP of the terminal device.

[0171] In some embodiments of the present application, the handover criterion comprises: a difference between the channel quality of the terminal device on the adjacent satellite beam and the channel quality of the terminal device on the serving satellite beam is greater than or equal to a second relative threshold.

[0172] In some embodiments of the present application, the handover criterion comprises: the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a third absolute threshold, and the channel quality of the terminal device on the serving satellite beam is less than or equal to a fourth absolute threshold.

[0173] In some embodiments of the present application, a plurality of beams in the adjacent satellite beam meet the handover criterion, and the processing unit 610 is specifically configured to:

[0174] determine a target satellite beam from the plurality of beams;

[0175] handover the BWP of the terminal device to a default BWP associated with the target satellite beam.

[0176] In some embodiments of the present application, the target satellite beam is a beam with the highest channel quality among the plurality of beams; and / or the target satellite beam is a beam with the largest number of target SSBs among the plurality of beams, the target SSB being an SSB with a channel quality greater than or equal to a fifth absolute threshold.

[0177] In some embodiments of the present application, the processing unit 610 is specifically configured to:

[0178] transmit first indication information, the first indication information being used to indicate that the terminal device has completed BWP switching.

[0179] In some embodiments of the present application, the processing unit 610 is specifically configured to:

[0180] initiate a random access channel (RACH) on the switched uplink (UL) BWP to indicate that the terminal device has completed BWP switching.

[0181] In some embodiments of the present application, the processing unit 610 is specifically configured to:

[0182] transmit a sounding reference signal (SRS) on the switched uplink (UL) BWP to indicate that the terminal device has completed BWP switching.

[0183] In some embodiments of the present application, the processing unit 610 is specifically configured to:

[0184] configure a configured grant (CG) on the switched uplink (UL) BWP;

[0185] transmit a BWP switching medium access control (MAC) control element (CE) on the CG, the BWP MAC CE being used to indicate that the terminal device has completed BWP switching.

[0186] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can be referred to the method embodiments. Specifically, Figure 12 The terminal device 600 shown can correspond to the corresponding subject in the method 200 of performing the embodiments of the present application, and the foregoing and other operations and / or functions of each unit in the terminal device 600 are respectively for realizing the corresponding process in each method in the Figures 4 to 10 For brevity, they will not be repeated here.

[0187] Figure 13 is a schematic block diagram of a network device 700 of the embodiments of the present application.

[0188] As shown in Figure 13 The network device 700 can include:

[0189] The communication unit 710 is configured to receive first indication information or send a switching command based on a channel quality measurement result for a serving satellite beam and an adjacent satellite beam, the switching command being used to instruct a terminal device to switch a bandwidth part (BWP), and the first indication information being used to instruct the terminal device to complete the BWP switching.

[0190] In some embodiments of the present application, the switching command comprises an identifier of a target BWP.

[0191] In some embodiments of the present application, the switching command further comprises an identifier of a target satellite beam and / or information used to indicate a validity time of the switching command.

[0192] In some embodiments of the present application, the communication unit 710 is further configured to:

[0193] send first information used to configure a trigger condition for the terminal device to report the channel quality measurement result.

[0194] In some embodiments of the present application, the trigger condition comprises a difference between a channel quality of the terminal device on the adjacent satellite beam and a channel quality of the terminal device on the serving satellite beam being greater than or equal to a first relative threshold.

[0195] In some embodiments of the present application, the trigger condition comprises the channel quality of the terminal device on the adjacent satellite beam being greater than or equal to a first absolute threshold and the channel quality of the terminal device on the serving satellite beam being less than or equal to a second absolute threshold.

[0196] In some embodiments of the present application, the switching command is carried by a physical downlink control channel (PDCCH) or a medium access control control element (MAC CE).

[0197] In some embodiments of the present application, the communication unit 710 is further configured to:

[0198] send second information used to configure a switching criterion for the terminal device to switch the BWP.

[0199] In some embodiments of the present application, the switching criterion comprises a difference between a channel quality of the terminal device on the adjacent satellite beam and a channel quality of the terminal device on the serving satellite beam being greater than or equal to a second relative threshold.

[0200] In some embodiments of the present application, the switching criterion comprises the channel quality of the terminal device on the adjacent satellite beam being greater than or equal to a third absolute threshold and the channel quality of the terminal device on the serving satellite beam being less than or equal to a fourth absolute threshold.

[0201] In some embodiments of the present application, the receiving the first indication information is configured to indicate that the terminal device has completed the BWP switching by receiving a random access channel (RACH) on the switched uplink (UL) BWP.

[0202] In some embodiments of the present application, the receiving the first indication information is configured to indicate that the terminal device has completed the BWP switching by receiving a sounding reference signal (SRS) on the switched uplink (UL) BWP.

[0203] In some embodiments of the present application, the communication unit 710 is specifically configured to:

[0204] receive a BWP switching medium access control control element (MAC CE) on a configured grant (CG) on the switched uplink (UL) BWP, the BWP MAC CE being configured to indicate that the terminal device has completed the BWP switching.

[0205] It should be understood that the apparatus embodiments and the method embodiments can correspond to each other, and similar descriptions can be referred to the method embodiments. Specifically, Figure 13 The network device 700 shown can correspond to the subject performing the corresponding procedures in the method 500 of the embodiments of the present application, and the foregoing and other operations and / or functions of the various units in the network device 700 are respectively implemented to achieve the corresponding procedures in the various methods Figures 5 to 11 In the various methods in the foregoing method 500, in order to be brief, the foregoing will not be described here again.

[0206] The communication device of the embodiments of the present application is described above in combination with the drawings from the perspective of functional modules. It should be understood that the functional modules can be implemented in the form of hardware, or in the form of instructions of software, or in the form of a combination of hardware and software modules.

[0207] Specifically, the steps of the method embodiments in the embodiments of the present application can be completed by the integrated logic circuit of hardware in the processor and / or the instructions in the form of software, and the steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware code processor execution completion, or executed by a combination of hardware and software modules in the code processor.

[0208] Optionally, the software module can be located in a mature storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory to complete the steps in the above method embodiments in combination with the hardware thereof.

[0209] For example, the processing unit and the communication unit involved above can be respectively implemented by a processor and a transceiver.

[0210] Figure 14 is a schematic structural diagram of a communication device 800 of the embodiments of the present application.

[0211] As shown in Figure 14 , the communication device 800 can include a processor 810.

[0212] The processor 810 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

[0213] Please continue to see Figure 14 , the communication device 800 can also include a memory 820.

[0214] The memory 820 can be used to store the indication information, and can also be used to store the code, instructions and the like executed by the processor 810. The processor 810 can call and run a computer program from the memory 820 to implement the method in the embodiments of the present application. The memory 820 can be a separate device independent of the processor 810, or can be integrated in the processor 810.

[0215] Please continue to see Figure 14 , the communication device 800 can also include a transceiver 830.

[0216] The processor 810 can control the transceiver 830 to communicate with other devices, specifically, can send information or data to other devices, or receive information or data sent by other devices. The transceiver 830 can include a transmitter and a receiver. The transceiver 830 can further include an antenna, and the number of antennas can be one or more.

[0217] It should be understood that the various components in the communication device 800 are connected through a bus system, wherein the bus system includes a data bus, a power supply bus, a control bus and a state signal bus in addition to the data bus.

[0218] It should also be understood that the communication device 800 can be a terminal device of the embodiments of the present application, and the communication device 800 can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the terminal device, that is, the communication device 800 of the embodiments of the present application can correspond to the terminal device 600 in the embodiments of the present application, and can correspond to the corresponding subject executing the method according to the embodiments of the present application. In order to be brief, it will not be repeated here. Similarly, the communication device 800 can be a network device of the embodiments of the present application, and the communication device 800 can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the network device. That is, the communication device 800 of the embodiments of the present application can correspond to the network device 700 in the embodiments of the present application, and can correspond to the corresponding subject executing the method according to the embodiments of the present application. In order to be brief, it will not be repeated here.

[0219] In addition, a chip is also provided in the embodiments of the present application.

[0220] For example, the chip can be an integrated circuit chip with signal processing capability, which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The chip can also be referred to as a system chip, a system chip, a chip system or a system on chip chip, etc. Alternatively, the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0221] Figure 15 is a schematic structural diagram of the chip 900 according to the embodiments of the present application.

[0222] As shown in Figure 15 , the chip 900 includes a processor 910.

[0223] The processor 910 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

[0224] Please continue to see Figure 15 , the chip 900 can also include a memory 920.

[0225] The processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiments of the present application. The memory 920 can be used to store the indication information, and can also be used to store the code, instructions and the like executed by the processor 910. The memory 920 can be a separate device independent of the processor 910, or can be integrated in the processor 910.

[0226] Please continue to see Figure 15 , the chip 900 can also include an input interface 930.

[0227] The processor 910 can control the input interface 930 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

[0228] Please continue to see Figure 15 , the chip 900 can also include an output interface 940.

[0229] The processor 910 can control the output interface 940 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

[0230] It should be understood that the chip 900 can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application, and can also implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

[0231] It should also be understood that the various components in the chip 900 are connected through a bus system, wherein the bus system includes a data bus, a power supply bus, a control bus and a state signal bus in addition to the data bus.

[0232] The processor referred to above can include but is not limited to:

[0233] A general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0234] The processor can be used to implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware code processing executed by the processor, or executed by a combination of hardware and software modules in the code processing. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an erasable programmable memory, a register, etc. The storage medium in the memory is read by the processor, and the hardware thereof is combined to complete the steps of the above method.

[0235] The memory referred to above includes but is not limited to:

[0236] The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synch link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

[0237] It should be noted that the memory described herein is intended to include these and any other suitable types of memory.

[0238] The computer readable storage medium in the embodiments of the present application further provides a computer program. The computer readable storage medium stores one or more programs, and the one or more programs include instructions, which, when executed by the portable electronic device including a plurality of application programs, enable the portable electronic device to perform the method of the embodiments shown in the methods 300 to 500.

[0239] Optionally, the computer readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to perform the corresponding procedures realized by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein.

[0240] Optionally, the computer readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to perform the corresponding procedures realized by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein.

[0241] The computer program product in the embodiments of the present application further provides a computer program.

[0242] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding procedures implemented by the network device in the various methods of the embodiments of the present application. For brevity, details are not described herein.

[0243] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding procedures implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For brevity, details are not described herein.

[0244] The embodiments of the present application also provide a computer program. When the computer program is executed by a computer, the computer can execute the method of the embodiments shown in the methods 300 to 500.

[0245] Optionally, the computer program can be applied to the network device in the embodiments of the present application, and when the computer program is running on the computer, the computer executes the corresponding procedures implemented by the network device in the various methods of the embodiments of the present application. For brevity, details are not described herein.

[0246] In addition, the embodiments of the present application also provide a communication system, which can include the terminal device and the network device involved above to form a communication system 100 as shown in Figure 1 For brevity, details are not described herein. It should be noted that the term "system" and the like in this paper can also be referred to as "network management architecture" or "network system" and the like.

[0247] It should also be understood that the terms used in the embodiments of the present application and the appended claims are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application.

[0248] For example, the singular forms "a", "said", "the above" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0249] Those skilled in the art can realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of the present application.

[0250] If implemented in the form of software functional units and sold or used as an independent product, these functional units can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present application essentially or partly contribute to the prior art, or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and various media that can store program codes.

[0251] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0252] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways.

[0253] For example, the division of the units or modules or components in the above-described device embodiments is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or modules or components can be combined or integrated into another system, or some units or modules or components can be ignored or not executed.

[0254] For another example, the units / modules / components described above as separate / displayed components can or can not be physically separated, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units / modules / components can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0255] Finally, it should be noted that the coupling or direct coupling or communication connection between the above-mentioned and discussed units can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0256] The above is only a specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the embodiments of the present application, which should be covered in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising: The method is performed by a terminal device, and includes: based on channel quality measurement results for a serving satellite beam and a neighboring satellite beam, switching a bandwidth part (BWP) of the terminal device in a case where the measurement results satisfy a switching criterion, the BWP including an uplink (UL) BWP and a downlink (DL) BWP; the switching criterion including: a difference between channel quality of the terminal device on the neighboring satellite beam and channel quality of the terminal device on the serving satellite beam being greater than or equal to a second relative threshold for a duration; or, channel quality of the terminal device on the neighboring satellite beam being greater than or equal to a third absolute threshold and channel quality of the terminal device on the serving satellite beam being less than or equal to a fourth absolute threshold for a duration; sending first indication information to a network device, the first indication information being used to indicate that the terminal device has completed BWP switching, the network device being a satellite; the sending of the first indication information to the network device includes: sending a sounding reference signal (SRS) on the switched UL BWP to indicate that the terminal device has completed BWP switching; wherein the serving satellite beam and the neighboring satellite beam are associated with different BWPs within a same cell, and the channel quality measurement results include measurement results of synchronization signal / physical broadcast channel (SSB) associated with the serving satellite beam and measurement results of SSB associated with the neighboring satellite beam.

2. The method of claim 1, wherein, The method further includes: obtaining second information used to configure the switching criterion.

3. The method of claim 1, wherein, The plurality of beams in the neighboring satellite beam satisfy the switching criterion, and the method further includes: determining a target satellite beam from the plurality of beams; switching the BWP of the terminal device to a default BWP associated with the target satellite beam.

4. The method of claim 3, wherein, The target satellite beam is a beam with the highest channel quality among the plurality of beams; and / or the target satellite beam is a beam with the largest number of target SSBs among the plurality of beams, the target SSB being an SSB with channel quality greater than or equal to a fifth absolute threshold.

5. A method of wireless communication, the method comprising: The method is performed by a network device, the network device being a satellite, and includes: receiving first indication information sent by a terminal device, the first indication information being used to indicate that the terminal device has completed bandwidth part (BWP) switching, the terminal device completing BWP switching of the terminal device in a case where channel quality measurement results for a serving satellite beam and a neighboring satellite beam satisfy a switching criterion; the switching criterion including: a difference between channel quality of the terminal device on the neighboring satellite beam and channel quality of the terminal device on the serving satellite beam being greater than or equal to a second relative threshold for a duration; or, channel quality of the terminal device on the neighboring satellite beam being greater than or equal to a third absolute threshold and channel quality of the terminal device on the serving satellite beam being less than or equal to a fourth absolute threshold for a duration; the receiving of the first indication information sent by the terminal device includes: Send a probe reference signal (SRS) on the switched UL BWP to indicate that the terminal device has completed the BWP switch. The serving satellite beam and the adjacent satellite beam are associated with different BWPs within the same cell. The channel quality measurement results include the measurement results of the synchronization signal / physical broadcast channel (SSB) associated with the serving satellite beam and the measurement results of the SSB associated with the adjacent satellite beam.

6. The method of claim 5, wherein, The method further includes: Send a second message to configure the switching criteria.

7. A terminal device, characterized by comprising: include: The processing unit is configured to switch the bandwidth portion (BWP) of the terminal device based on the channel quality measurement results for the serving satellite beam and adjacent satellite beams, provided that the measurement results meet the handover criteria. The BWP includes an uplink ULBWP and a downlink DL BWP. The handover criteria include: for a period of time, the difference between the channel quality of the terminal device on the adjacent satellite beam and the channel quality of the terminal device on the serving satellite beam is greater than or equal to a second relative threshold; or, for a period of time, the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a third absolute threshold, and the channel quality of the terminal device on the serving satellite beam is less than or equal to a fourth absolute threshold. Communication unit, used for Send a first indication message to the network device, the first indication message being used to indicate that the terminal device has completed BWP handover, the network device being a satellite; Sending the first indication information to the network device includes: Send a probe reference signal (SRS) on the switched UL BWP to indicate that the terminal device has completed the BWP switch. The serving satellite beam and the adjacent satellite beam are associated with different BWPs within the same cell. The channel quality measurement results include the measurement results of the synchronization signal / physical broadcast channel (SSB) associated with the serving satellite beam and the measurement results of the SSB associated with the adjacent satellite beam.

8. A network device, comprising: The network equipment is a satellite, including: A communication unit is configured to receive first indication information sent by a terminal device. The first indication information indicates that the terminal device has completed a bandwidth portion (BWP) handover. The terminal device completes the BWP handover when the channel quality measurement results for the serving satellite beam and adjacent satellite beams meet the handover criteria. The handover criteria include: for a certain period of time, the difference between the channel quality of the terminal device on the adjacent satellite beam and the channel quality of the terminal device on the serving satellite beam is greater than or equal to a second relative threshold; or, for a certain period of time, the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a third absolute threshold, and the channel quality of the terminal device on the serving satellite beam is less than or equal to a fourth absolute threshold. The first indication information sent by the receiving terminal device includes: Send a probe reference signal (SRS) on the switched UL BWP to indicate that the terminal device has completed the BWP switch. The serving satellite beam and the adjacent satellite beam are associated with different BWPs within the same cell. The channel quality measurement results include the measurement results of the synchronization signal / physical broadcast channel (SSB) associated with the serving satellite beam and the measurement results of the SSB associated with the adjacent satellite beam.

9. A terminal device, comprising: include: A processor, a memory, and a transceiver, wherein the memory is used to store a computer program, and the processor is used to invoke and run the computer program stored in the memory to perform the method of any one of claims 1 to 4.

10. A network device, comprising: include: A processor, a memory, and a transceiver, wherein the memory is used to store a computer program, and the processor is used to invoke and run the computer program stored in the memory to perform the method of any one of claims 5 to 6.

11. A chip, characterized by include: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 4, or the method as described in any one of claims 5 to 6.

12. A computer-readable storage medium, characterized in that, Used to store a computer program that causes a computer to perform the method as claimed in any one of claims 1 to 4, or the method as claimed in any one of claims 5 to 6.

13. A computer program product, characterised in that, It includes computer program instructions that cause a computer to perform the method as claimed in any one of claims 1 to 4, or the method as claimed in any one of claims 5 to 6.

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