WO2022027232A1

WO2022027232A1 - Wireless communication method and device

Info

Publication number: WO2022027232A1
Application number: PCT/CN2020/106813
Authority: WO
Inventors: 胡奕; 李海涛; 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2022-02-10
Also published as: CN115668806A

Abstract

Provided are a wireless communication method and device. The method comprises: handing over a bandwidth part (BWP) of a terminal device on the basis of a channel quality measurement result or a handover command regarding a service satellite beam and an adjacent satellite beam. Different satellite beams can be configured with different bandwidth parts (BWPs) within the same cell, which is equivalent to different BWPs being used to distinguish adjacent satellite beams; in addition, when taking the mobility of a terminal device and the mobility of a satellite into consideration, a bandwidth part (BWP) of the terminal device is handed over the basis of a channel quality measurement result or a handover command regarding a service satellite beam and an adjacent satellite beam, such that it can be ensured that the terminal device performs a BWP handover during the movement process of the terminal device relative to a satellite, thereby improving the user experience.

Description

Wireless communication method and device

technical field

The embodiments of the present application relate to the field of communication, and more particularly, to wireless communication methods and devices.

Background technique

At present, the 3rd Generation Partnership Project (3GPP) is studying the technology of non-terrestrial communication network (Non Terrestrial Network, NTN), and NTN can provide communication services to terrestrial users by means of satellite communication. Compared with terrestrial cellular network communication, satellite communication has many unique advantages.

First of all, satellite communication is not limited by the user's geographical area. For example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or cannot be covered due to sparse population. For satellite communication, due to a single Satellites can cover a large ground, and satellites can orbit around the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value. Satellite communications can be covered at low cost in remote mountainous areas and poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technologies, which is conducive to narrowing the digital divide with developed regions and promoting development in these areas. Thirdly, the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases; finally, the satellite communication has high stability and is not limited by natural disasters.

A satellite beam is the smallest unit that a satellite covers the earth's surface, corresponding to different directions. Usually, a satellite covers the earth's surface through hundreds or thousands of satellite beams. These satellite beams can be deployed as different cells or within the same cell. Considering the possible co-channel interference between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, that is, adjacent satellite beams are distinguished by different frequency points/carriers/frequency bands.

However, how to use different frequencies/carriers/frequency bands to distinguish adjacent satellite beams and how to implement switching of frequency points/carriers/frequency bands by terminal equipment is a problem that needs to be solved urgently in the art.

SUMMARY OF THE INVENTION

A wireless communication method and device are provided. By configuring different bandwidth parts (Bandwidth Part, BWP) in the same cell for different satellite beams, it is equivalent that different BWPs can be used to distinguish adjacent satellite beams; in addition, considering The mobility of the terminal device and the mobility of the satellite are improved, which can ensure that the terminal device performs BWP handover in the process of moving relative to the satellite, and improves the user experience.

In a first aspect, a wireless communication method is provided, including:

The bandwidth portion BWP of the terminal device is switched based on channel quality measurements or handover commands for the serving and adjacent satellite beams.

In a second aspect, a wireless communication method is provided, including:

Receive first indication information or send a handover command based on the channel quality measurement results for the serving satellite beam and the adjacent satellite beam, the handover command is used to instruct the terminal device to switch the bandwidth part BWP, and the first indication information is used to instruct the The terminal device has completed the BWP handover.

In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided for executing the method in the second aspect or each of its implementations. Specifically, the network device includes a functional module for executing the method in the second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, so as to execute the method in the above-mentioned first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided, including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, so as to execute the method in the above-mentioned second aspect or each implementation manner thereof.

In a seventh aspect, a chip is provided for implementing any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes any one of the above-mentioned first to second aspects or each of its implementations method in .

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, and the computer program causes a computer to execute the method in any one of the above-mentioned first aspect to the second aspect or each implementation manner thereof.

In a ninth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above-mentioned first to second aspects or the implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-mentioned first to second aspects or the respective implementations thereof.

Based on the above technical solutions, different satellite beams can be configured with different bandwidth partial BWPs in the same cell, which is equivalent to using different BWPs to distinguish adjacent satellite beams to reduce co-channel interference between adjacent satellite beams; in addition, , considering the mobility of the terminal equipment and the mobility of the satellites, switching the bandwidth part BWP of the terminal equipment based on the channel quality measurement results or handover commands for the serving satellite beam and the adjacent satellite beams, can ensure that the terminal equipment is in relative to the satellite. BWP switching is performed during the mobile process, which improves the user experience.

Description of drawings

1 to 3 are examples of application scenarios of the present application.

FIG. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

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

FIG. 6 and FIG. 7 are schematic diagrams of trigger conditions provided by embodiments of the present application.

FIG. 8 is a schematic flowchart of a wireless communication method based on a handover criterion provided by an embodiment of the present application.

FIG. 9 and FIG. 10 are schematic diagrams of handover criteria provided by embodiments of the present application.

FIG. 11 is a schematic flowchart of another wireless communication method provided by an embodiment of the present application.

FIG. 12 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

FIG. 13 is a schematic block diagram of a network device provided by an embodiment of the present application.

FIG. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 15 is a schematic block diagram of a chip provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , the communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through the air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application only uses the communication system 100 for exemplary description, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile communication system (Universal mobile communication system) Mobile Telecommunication System, UMTS), 5G communication system (also known as New Radio (New Radio, NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . An access network device may provide communication coverage for a particular geographic area, and may communicate with terminal devices 110 (eg, UEs) located within the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, Or a base station (gNB) in an NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolved Public Land Mobile Network (PLMN).

The terminal device 110 may be any terminal device, which includes, but is not limited to, a terminal device that adopts a wired or wireless connection with the network device 120 or other terminal devices.

For example, the terminal equipment 110 may refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent, or user device. The access terminal may 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 wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, end devices in 5G networks or end devices in future evolved networks, etc.

The terminal device 110 may be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may further include a core network device 130 that communicates with the base station, and the core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, an Access and Mobility Management Function (Access and Mobility Management Function). , AMF), another example, authentication server function (Authentication Server Function, AUSF), another example, user plane function (User Plane Function, UPF), another example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be an evolved packet core (Evolved Packet Core, EPC) device of an LTE network, for example, a session management function+core network data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) Equipment. It should be understood that the SMF+PGW-C can simultaneously implement the functions that the SMF and the PGW-C can implement. In the process of network evolution, the above-mentioned core network equipment may also be called by other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in this embodiment of the present application.

The various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal equipment establishes an air interface connection with the access network equipment through the NR interface to transmit user plane data and control plane signaling; the terminal equipment can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); access Network equipment, such as the 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 equipment can establish a control plane signaling with the AMF through the NG interface 2 (N2 for short). connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (N4 for short); UPF can exchange user plane data with the data network through NG interface 6 (N6 for short); AMF can communicate with SMF through NG interface 11 (N11 for short) The SMF establishes a control plane signaling connection; the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

FIG. 1 exemplarily shows one base station, one core network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and the coverage area of each base station may include other numbers of terminals equipment, which is not limited in this embodiment of the present application.

FIG. 2 is a schematic structural diagram of another communication system provided by an embodiment of the present application.

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

FIG. 3 is a schematic structural diagram of another communication system provided by an embodiment of the present application.

As shown in FIG. 3 , it includes a terminal device 1201 , a satellite 1202 and a base station 1203 , the terminal device 1201 and the satellite 1202 can communicate wirelessly, 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 may also be referred to as NTN. In the architecture of the communication system shown in FIG. 3 , the satellite 1202 may not have the function of the base station, and the communication between the terminal device 1201 and the base station 1203 needs to be relayed through the satellite 1202 . Under such a system architecture, the base station 1203 may be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and the coverage of each network device 1203 may include other numbers of terminal devices, which are not limited in this embodiment of the present application. The network device 1203 may be the network device 120 in FIG. 1 .

It should be understood that the above-mentioned satellite 1102 or satellite 1202 includes but is not limited to:

Low-Earth Orbit (Low-Earth Orbit,) LEO satellites, Medium-Earth Orbit (MEO) satellites, Geostationary Earth Orbit (Geostationary Earth Orbit, GEO) satellites, High Elliptical Orbit (High Elliptical Orbit, HEO) satellites, etc. Wait. Satellites can use multiple beams to cover the ground. For example, a satellite can form dozens or even hundreds of beams to cover the ground. In other words, a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers to ensure satellite coverage and increase the system capacity of the entire satellite communication system.

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

It should be noted that, FIG. 1 to FIG. 3 only illustrate systems to which the present application applies in the form of examples, and of course, the methods shown in the embodiments of the present application may also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship. It should also be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In order to facilitate the understanding of the solution of the present application, the handover mechanism of the NR BWP is described below.

5G NR further increases the system bandwidth on the basis of 4G to provide a larger data transmission rate and improve user experience.

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

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 BWPs that can be configured is 4. At each moment, the terminal can only have one active DL BWP and one active UL BWP on this serving cell, and the terminal can only send and receive data on the active BWP. Considering factors such as the diversity of terminal services and the differences in the characteristics of different services, terminals may need to adjust the BWP. For example, when a terminal has a large traffic volume and wants to obtain a high-speed service, a BWP with a large bandwidth needs to be used for data transmission for the terminal. When the traffic volume of the terminal is small, a BWP with a small bandwidth can be used for data transmission for the terminal. The BWP activated by the terminal on this serving cell can be changed by means of BWP handover. Currently, there are four BWP handover methods supported in the standard:

1. BWP handover based on PDCCH.

Network controlled BWP handoff. The network informs the terminal of the target BWP of the handover by sending the PDCCH to the terminal.

2. BWP handover based on RRC (re)configuration

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

3. BWP switching based on timer timeout.

Implicit BWP toggle. The network side configures a timer bwp-InactivityTimer for each serving cell of the terminal. If the DL BWP currently activated by the terminal is a BWP other than the default BWP and the initial DL BWP, every time the terminal receives a PDCCH indicating the UE's uplink or downlink scheduling on the currently activated BWP, or the terminal receives an indication that the UE is currently The activated BWP uplink or downlink scheduled PDCCH starts or restarts the timer bwp-InactivityTimer. When the timer bwp-InactivityTimer times out, the terminal automatically switches to the default BWP or the initial DL BWP, where both the default BWP and the initial BWP are determined by the RRC configuration.

4. BWP handover caused by random access initialization.

During 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 at the same time.

FIG. 4 shows a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application, and the method 200 may be executed by a terminal device. The terminal device shown in FIG. 2 may be the terminal device shown in FIG. 1 to FIG. 3 .

As shown in FIG. 4, the method 200 may include:

S210, switch the BWP of the terminal device based on the channel quality measurement result or the handover command for the serving satellite beam and the adjacent satellite beam.

For example, the terminal device switches the uplink BWP and/or the downlink BWP of the terminal device based on the channel quality measurement result or the handover command.

For example, different satellite beams can be configured with different bandwidth partial BWPs in the same cell. Based on this, different BWPs can be used to distinguish adjacent satellite beams to reduce co-channel interference between adjacent satellite beams; in addition, considering the The mobility of the terminal equipment and the mobility of the satellite, based on the channel quality measurement results or handover commands for the serving satellite beam and the adjacent satellite beam, the bandwidth part BWP of the terminal equipment is switched to ensure that the terminal equipment is in the process of moving relative to the satellite. Perform BWP switching to improve user experience.

It should be understood that the switching of the BWP can be understood as the terminal device switching the activated BWP 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.

In some embodiments of the present application, the S210 may include:

Obtain the handover command, the handover command includes the identification of the target BWP;

The BWP of the terminal device is switched to the target BWP.

For example, after acquiring the handover 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 handover 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.

In some embodiments of the present application, the handover command further includes an identifier of the target satellite beam and/or information used to indicate the effective time of the handover command.

For example, the handover command further includes the identifier of the target satellite beam, and the terminal device switches the BWP of the terminal device to the one associated with the target satellite beam based on the identifier of the target satellite beam and the identifier of the target BWP. the target BWP. For another example, the handover 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 the SSB set associated with the target BWP. Optionally, the SSB set associated with the target BWP may be configured by a network device.

In other words, after the terminal device receives the handover command, the terminal device does not perform BWP handover immediately, but waits until the effective time to perform BWP handover. Of course, the handover command may also directly include the information of the effective time. The effective time may also be referred to as the execution time or the execution time of the BWP handover. The effective time may be a time point or a time period.

In some embodiments of the present application, the method 200 may further include:

acquiring first information, which is used to configure a trigger condition for the terminal device to report the channel quality measurement result;

If the channel quality measurement result satisfies the trigger condition, the channel quality measurement result is sent.

For example, after acquiring 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 by the first information, and the network device determines whether to report the channel quality measurement result based on the information reported by the terminal device. The channel quality measurement result is used to send the handover command to the terminal device.

In other words, the network device configures the triggering condition, and if the channel quality measurement result satisfies the triggering condition, the terminal device sends the channel quality measurement result to assist the network device to perform BWP handover decision.

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

In some embodiments of the present application, the trigger condition includes: 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 of the terminal device on the serving satellite beam The quality is less than or equal to the second absolute threshold.

In some embodiments of the present application, the handover command is carried through a Physical Downlink Control Channel (PDCCH) or a Media Access Control (Media Access Control, MAC) control element (Control element, CE).

FIG. 5 is a schematic flowchart of a wireless communication method 300 based on the trigger condition provided by an embodiment of the present application. FIG. 6 and FIG. 7 are schematic diagrams of triggering conditions according to an embodiment of the present application, respectively. The wireless communication method based on the trigger condition will be exemplarily described below with reference to FIG. 5 to FIG. 7 .

As shown in FIG. 5, the method 300 may include some or all of the following:

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

For example, the terminal device receives a system message, and the system message is used to configure related information of a satellite beam. For example, the related information of the satellite beams includes, but is not limited to: information of multiple satellite beams, the association relationship between the multiple satellite beams and the SSB, and multiple initial (initial) BWPs. Each satellite beam in the plurality of 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 a satellite beam.

S320: The network device sends first information to the terminal device, which is used to configure a trigger condition for the terminal device to report the channel quality measurement result.

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 multiple BWPs and a trigger condition for reporting a measurement event X of a satellite beam. Optionally, the measurement event X may be acquiring or measuring a channel quality measurement quantity. For example, the channel quality measurement quantity may be Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR), Reference Signal Receiving Power (Reference Signal Receiving Power, RSRP), and Reference Signal Receiving Quality (Reference Signal Receiving Quality, RSRQ) any one or at least one.

In other words, the terminal device can perform SSB measurement 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 multiple SSBs associated with the satellite beam can be used. Generate satellite beam measurements.

As an example, the trigger condition may refer to: within a period of time T1, 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 higher than the first letter relative threshold. The duration T1 for satisfying the trigger condition and the first relative threshold may be configured or preset. For example, the duration T1 for satisfying the trigger condition or the first relative threshold may be configured by the network device through RRC. In other words, 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 if the trigger condition is satisfied.

For example, if there is at least one adjacent satellite beam that satisfies the trigger condition for reporting measurement event X, that is, the channel quality of the terminal device on the first adjacent satellite beam and the terminal device on the serving satellite beam within a duration T1 If the difference value of the channel quality on the above is higher than the first relative threshold, the terminal device reports the channel quality measurement result to the network device. The first adjacent satellite beam may be any one of the at least one adjacent satellite beam. Optionally, the channel quality measurement result may include the identifier (ID) of the at least one adjacent satellite beam, the measurement result of the channel quality of the serving satellite beam and the adjacent satellite beam, and the like by the terminal device. For example, in FIG. 6, the difference between the channel quality of the terminal device on the adjacent satellite beam 1 and the channel quality of the terminal device on the serving satellite beam, within T1, is higher than the first signal relative threshold, then The terminal device reports the channel quality measurement result to the network device. The channel quality measurement result may include the identifier of the adjacent satellite beam 1, and the measurement result of the channel quality of the terminal device on the serving satellite beam and the adjacent satellite beam 1, and the like. Of course, a similar judgment can also be made for the adjacent satellite beam 2 to determine whether to report the identification of the adjacent satellite beam 2 and the measurement result of the channel quality of the adjacent satellite beam 2 .

As another example, the trigger condition may refer to: within a duration T2, the channel quality of the terminal device on the adjacent satellite beam is higher than the first absolute threshold, and the terminal device on the serving satellite beam has a channel quality higher than the first absolute threshold. The channel quality is below the second absolute threshold. The duration T2 for satisfying the trigger condition, the first absolute threshold and the second absolute threshold may be configured or preset. For example, the duration T2 for satisfying the trigger condition, the first absolute threshold or the second absolute threshold may be configured by the network device through RRC. The first absolute threshold may 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 if the trigger condition is satisfied.

For example, if there is at least one adjacent satellite beam that satisfies the triggering condition for reporting measurement event X, that is, within a period of time T2, within a period of time T2, the channel quality of the terminal device on the adjacent satellite beam is higher than that of the first An absolute threshold, and the channel quality of the terminal device on the serving satellite beam is lower than the second absolute threshold, the terminal device reports the channel quality measurement result to the network device. The first adjacent satellite beam may be any one of the at least one adjacent satellite beam. Optionally, the channel quality measurement result may include the identifier (ID) of the at least one adjacent satellite beam, the measurement result of the channel quality of the serving satellite beam and the adjacent satellite beam, and the like by the terminal device. For example, in FIG. 7, within a period of time T2, the channel quality of the terminal device on the adjacent satellite beam 1 is higher than the first absolute threshold, and the channel quality of the terminal device on the serving satellite beam is lower than For the second absolute threshold, the terminal device reports the channel quality measurement result to the network device. The channel quality measurement result may include the identifier of the adjacent satellite beam 1, and the measurement result of the channel quality of the terminal device on the serving satellite beam and the adjacent satellite beam 1, and the like. Of course, a similar judgment can also be made for the adjacent satellite beam 2 to determine whether to report the identification of the adjacent satellite beam 2 and the measurement result of the channel quality of the adjacent satellite beam 2 .

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

S340, the network device sends a handover command (including the identifier of the target BWP) to the terminal device.

That is, after sending the channel quality measurement result to the network device, the terminal device receives the handover command sent by the network device. In other words, the network device determines the target BWP for handover of the terminal device 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 may include the handover target BWP ID; optionally, the handover command may also include the handover target satellite beam ID and/or the effective time of the handover command; The handover command is carried by MAC CE or PDCCH.

S350, the terminal device switches the BWP of the terminal device to the target BWP.

For example, if the handover command includes the effective time of the handover command, the terminal device does not perform the BWP handover immediately, but waits until the effective time to execute the BWP handover. For another example, if the handover command does not include the effective time of the handover command, the terminal device executes BWP handover after receiving the handover command.

In some embodiments of the present application, the S210 may include:

acquiring second information, which is used to configure a handover criterion for handover of the BWP by the terminal device;

If the channel quality measurement result satisfies the handover criterion, the BWP of the terminal device is handed over.

In other words, after acquiring the handover criterion, the terminal device may directly determine whether to handover the BWP of the terminal device based on the handover criterion.

In some embodiments of the present application, the handover criterion includes: 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 greater than or equal to the second relative threshold.

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

In some embodiments of the present application, the plurality of beams in the adjacent satellite beams satisfy the handover criterion, and the method 200 may further include:

determining a target satellite beam from the plurality of beams;

The BWP of the terminal device is switched to the default BWP associated with the target satellite beam.

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 target synchronization signal/physical broadcast channel ( The beam with the largest number of Synchronization Signal/PBCH Block (SSB), the target SSB is the SSB whose channel quality is greater than or equal to the fifth absolute threshold.

Send first indication information, where the first indication information is used to indicate that the terminal device has completed the BWP handover.

For example, a random access channel (Random Access Channel, RACH) is initiated on the handed uplink (UL) BWP to indicate that the terminal device has completed the BWP handover. For another example, a sounding reference signal (Sounding Reference Signal, SRS) is sent on the switched uplink UL BWP to indicate that the terminal device has completed the BWP switching. For another example, a configuration grant (Configuration Grant, CG) is configured on the switched uplink UL BWP; a BWP switching MAC CE is sent on the CG, and the BWP switching MAC CE is used to indicate that the terminal device has completed the BWP switching.

FIG. 8 is a schematic flowchart of a wireless communication method 400 based on the handover criterion provided by an embodiment of the present application. FIG. 9 and FIG. 10 are schematic diagrams of handover criteria according to an embodiment of the present application, respectively. The wireless communication method based on the trigger condition will be exemplarily described below with reference to FIG. 8 to FIG. 10 .

As shown in FIG. 8, the method 400 may include some or all of the following:

S410, the network device sends the satellite beam configuration to the terminal device.

S420: The network device sends second information to the terminal device, which is used to configure a handover criterion for handover of the BWP by the terminal device.

S430, if the channel quality measurement result satisfies the switching criterion, the terminal device switches the BWP of the terminal device.

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 multiple BWPs and a handover criterion based on the measurement event X. Optionally, the measurement event X may be acquiring or measuring a channel quality measurement quantity. For example, the channel quality measurement quantity may be Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR), Reference Signal Receiving Power (Reference Signal Receiving Power, RSRP), and Reference Signal Receiving Quality (Reference Signal Receiving Quality, RSRQ) any one or at least one.

As an example, the handover criterion may refer to: within a period of time T3, 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 higher than the second letter relative threshold. The duration T3 for satisfying the trigger condition and the second relative threshold may be configured or preset. For example, the duration T3 for satisfying the trigger condition or the second relative threshold may be configured by the network device through RRC. In other words, the terminal device determines whether the handover criterion is satisfied based on the measurement result of the satellite beam, and then directly switches the BWP of the terminal device if the handover criterion is satisfied. For example, the terminal device simultaneously switches the uplink BWP and downlink BWPs are switched to a default BWP associated with the target adjacent satellite beam.

For example, if there is at least one adjacent satellite beam that satisfies the triggering condition for reporting measurement event X, that is, the channel quality of the terminal device on the second adjacent satellite beam and the terminal device on the serving satellite beam within a duration T3 If the difference of the channel quality on the second adjacent satellite beam is higher than the second relative threshold, the terminal device switches the BWP of the terminal device to the default BWP on the second adjacent satellite beam. The second adjacent satellite beam may be any one of the at least one adjacent satellite beam. For example, the second adjacent satellite beam is the beam with the highest channel quality among the at least one adjacent satellite beam; and/or the second adjacent satellite beam is the target number of SSBs in the at least one adjacent satellite beam For the most beams, the target SSB is an SSB whose channel quality is greater than or equal to the fifth absolute threshold.

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

For example, in FIG. 9, the difference between the channel quality of the terminal device on the adjacent satellite beam 1 and the channel quality of the terminal device on the serving satellite beam, within T1, is higher than the second relative threshold, then The terminal device switches to the default BWP on the adjacent satellite beam 1. Of course, a similar determination 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 .

As another example, the handover criterion may refer to: within a duration T4, the channel quality of the terminal device on the adjacent satellite beam is higher than a third absolute threshold, and the terminal device's channel quality on the serving satellite beam is higher than the third absolute threshold. The channel quality is below the fourth absolute threshold. The duration T4 for satisfying the trigger condition, the third absolute threshold and the fourth absolute threshold may be configured or preset. For example, the duration T4 for satisfying the trigger condition, the third absolute threshold or the fourth absolute threshold may be configured by the network device through RRC. The third absolute threshold may be greater than or equal to the fourth absolute threshold. The terminal device determines whether the handover criterion is satisfied based on the measurement result of the satellite beam, and then directly switches the BWP of the terminal device if the handover criterion is satisfied. For example, the terminal device simultaneously switches the uplink BWP and downlink BWP. The BWP switches to a default BWP associated with the target adjacent satellite beam.

For example, if there is at least one adjacent satellite beam that satisfies the trigger condition for reporting measurement event X, that is, within a duration T4, the channel quality of the terminal device on the adjacent satellite beam is higher than the third absolute threshold, and the If the channel quality of the terminal device on the serving satellite beam is lower than the fourth absolute threshold, the terminal device switches the BWP of the terminal device to the default BWP on the second adjacent satellite beam. The second adjacent satellite beam may be any one of the at least one adjacent satellite beam. For example, the second adjacent satellite beam is the beam with the highest channel quality among the at least one adjacent satellite beam; and/or the second adjacent satellite beam is the target number of SSBs in the at least one adjacent satellite beam For the most beams, the target SSB is an SSB whose channel quality is greater than or equal to the fifth absolute threshold.

For example, in FIG. 10, within a period of time T4, the channel quality of the terminal device on the adjacent satellite beam 1 is higher than the third absolute threshold, and the channel quality of the terminal device on the serving satellite beam is lower than For the fourth absolute threshold, the terminal device switches to the default BWP on the adjacent satellite beam 1. Of course, a similar determination 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 .

S440, the terminal device sends first indication information to the network device, where the first indication information is used to indicate that the terminal device has completed the BWP handover.

For example, after the terminal device finishes triggering the terminal device to switch the BWP based on the switching criterion, the terminal device sends a BWP switching completion indication to the network device. For example, the terminal device initiates the 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 an 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 a 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 does not configure CG on the new UL BWP, the terminal device initiates RACH on the new UL BWP.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner unless they are inconsistent. In order to avoid unnecessary repetition, this application does not describe any possible combination. State otherwise. For another example, the various embodiments of the present application can also be combined arbitrarily, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application.

It should also be understood that, in the various method embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the present application. The implementation of the embodiments constitutes no limitation. In addition, in the embodiments of the present application, the terms "downlink" and "uplink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is from the site to the user equipment of the cell In the first direction, "uplink" is used to indicate that the transmission direction of the signal or data is the second direction sent from the user equipment of the cell to the site. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in this embodiment of the present application, the term "and/or" is only an association relationship for describing associated objects, indicating that there may be three kinds of relationships. Specifically, A and/or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

4 to 10, the wireless communication method according to the embodiment of the present application is described in detail from the perspective of the terminal device, and the wireless communication method according to the embodiment of the present application will be described below with reference to FIG. 11 from the perspective of the network device.

FIG. 11 shows a schematic flowchart of a wireless communication method 500 according to an embodiment of the present application. The method 500 may be performed by a network device, and the network device may be an access network device as shown in FIG. 1 or FIG. 3 , or a satellite as shown in FIG. 12 or FIG. 3 .

As shown in FIG. 11, the method 500 may include:

S510: Receive first indication information or send a handover command based on the channel quality measurement results for the serving satellite beam and the adjacent satellite beam, where the handover command is used to instruct the terminal device to switch the bandwidth part BWP, and the first indication information is used to indicate The terminal device has completed the BWP handover.

In some embodiments of the present application, the handover command includes the identification of the target BWP.

In some embodiments of the present application, the method 500 may further include:

The first information is sent, which is used to configure a trigger condition for the terminal device to report the channel quality measurement result.

In some embodiments of the present application, the trigger condition includes: 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 Greater than or equal to the first relative threshold.

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.

The second information is sent, which is used to configure the handover criterion for handover of the BWP by the terminal device.

In some embodiments of the present application, the receiving the first indication information is used to indicate that the terminal device has completed the BWP handover by receiving a random access channel RACH on the handover uplink UL BWP.

In some embodiments of the present application, the receiving the first indication information is used to indicate that the terminal device has completed the BWP handover by receiving a sounding reference signal SRS on the handover uplink UL BWP.

In some embodiments of the present application, the receiving the first indication information includes:

On the configuration authorization CG on the switched uplink UL BWP, a BWP switching medium access control control element MAC CE is received, and the BWP MAC CE is used to indicate that the terminal device has completed the BWP switching.

It should be understood that the steps in the method 500 may refer to the corresponding steps in the method 200, which are not repeated here for brevity.

The method embodiments of the present application are described in detail above with reference to FIGS. 1 to 11 , and the apparatus embodiments of the present application are described in detail below with reference to FIGS. 12 to 15 .

FIG. 12 is a schematic block diagram of a terminal device 600 according to an embodiment of the present application.

As shown in FIG. 12, the terminal device 600 may include:

The processing unit 610 switches 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.

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

The BWP of the terminal device is switched to the target BWP.

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

In some embodiments of the present application, multiple beams in the adjacent satellite beams satisfy the switching criterion, and the processing unit 610 is specifically configured to:

determining a target satellite beam from the plurality of beams;

In some embodiments of the present application, the target satellite beam is the beam with the highest channel quality among the multiple beams; and/or the target satellite beam is the beam with the largest number of target SSBs among the multiple beams, so The target SSB is an SSB whose channel quality is greater than or equal to the fifth absolute threshold.

A random access channel RACH is initiated on the switched uplink UL BWP to indicate that the terminal device has completed the BWP switch.

A sounding reference signal SRS is sent on the switched uplink UL BWP to indicate that the terminal device has completed the BWP switch.

Configure the configuration authorization CG on the handover uplink UL BWP;

A BWP handover medium access control control element MAC CE is sent on the CG, and the BWP MAC CE is used to indicate that the terminal device has completed the BWP handover.

It should be understood that the apparatus embodiments and the method embodiments may correspond to each other, and similar descriptions may refer to the method embodiments. Specifically, the terminal device 600 shown in FIG. 12 may correspond to the corresponding subject in executing the method 200 of the embodiment of the present application, and the aforementioned and other operations and/or functions of the various units in the terminal device 600 are respectively for the purpose of realizing FIG. 4 to For the sake of brevity, the corresponding processes in each method in FIG. 10 will not be repeated here.

FIG. 13 is a schematic block diagram of a network device 700 according to an embodiment of the present application.

As shown in FIG. 13, the network device 700 may include:

A communication unit 710, configured to receive first indication information or send a handover command based on the channel quality measurement results for the serving satellite beam and the adjacent satellite beam, where the handover command is used to instruct the terminal device to switch the bandwidth part BWP, the first indication The information is used to indicate that the terminal device has completed the BWP handover.

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

In some embodiments of the present application, the communication unit 710 is specifically used for:

It should be understood that the apparatus embodiments and the method embodiments may correspond to each other, and similar descriptions may refer to the method embodiments. Specifically, the network device 700 shown in FIG. 13 may correspond to the corresponding subject in executing the method 500 of the embodiment of the present application, and the aforementioned and other operations and/or functions of the various units in the network device 700 are respectively for the purpose of realizing FIG. 5 to For the sake of brevity, the corresponding processes in each method in FIG. 11 will not be repeated here.

The communication device of the embodiments of the present application is described above from the perspective of functional modules with reference to the accompanying drawings. It should be understood that the functional modules can be implemented in the form of hardware, can also be implemented by instructions in the form of software, and can also be implemented by a combination of hardware and software modules.

Specifically, the steps of the method embodiments in the embodiments of the present application may be completed by hardware integrated logic circuits in the processor and/or instructions in the form of software, and the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as hardware The execution of the decoding processor is completed, or the execution is completed by a combination of hardware and software modules in the decoding processor.

Optionally, the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps in the above method embodiments in combination with its hardware.

For example, the processing unit and the communication unit referred to above may be implemented by a processor and a transceiver, respectively.

FIG. 14 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application.

As shown in FIG. 14 , the communication device 800 may include a processor 810 .

The processor 810 may call and run a computer program from the memory to implement the methods in the embodiments of the present application.

Continuing to refer to FIG. 14 , the communication device 800 may further include a memory 820 .

Wherein, the memory 820 may be used to store instruction information, and may also be used to store codes, instructions, etc. executed by the processor 810 . The processor 810 may call and run a computer program from the memory 820 to implement the methods in the embodiments of the present application. The memory 820 may be a separate device independent of the processor 810 , or may be integrated in the processor 810 .

Continuing to refer to FIG. 14 , the communication device 800 may further include a transceiver 830 .

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

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

It should also be understood that the communication device 800 may be a terminal device of an embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. The communication device 800 may correspond to the terminal device 600 in the embodiment of the present application, and may correspond to the corresponding subject in executing the method according to the embodiment of the present application, which is not repeated here for brevity. Similarly, the communication device 800 may be the network device of the embodiments of the present application, and the communication device 800 may implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. That is to say, the communication device 800 in the embodiment of the present application may correspond to the network device 700 in the embodiment of the present application, and may correspond to the corresponding subject in executing the method according to the embodiment of the present application, which is not repeated here for brevity .

In addition, the embodiment of the present application also provides a chip.

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

FIG. 15 is a schematic structural diagram of a chip 900 according to an embodiment of the present application.

As shown in FIG. 15 , the chip 900 includes a processor 910 .

The processor 910 may call and run a computer program from the memory to implement the methods in the embodiments of the present application.

Please continue to refer to FIG. 15 , the chip 900 may further include a memory 920 .

The processor 910 may call and run a computer program from the memory 920 to implement the methods in the embodiments of the present application. The memory 920 may be used to store instruction information, and may also be used to store codes, instructions and the like executed by the processor 910 . The memory 920 may be a separate device independent of the processor 910 , or may be integrated in the processor 910 .

Please continue to refer to FIG. 15 , the chip 900 may further include an input interface 930 .

The processor 910 may control the input interface 930 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Please continue to refer to FIG. 15 , the chip 900 may further include an output interface 940 .

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

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 in the embodiments of the present application, and can also implement the various methods in the embodiments of the present application. For the sake of brevity, the corresponding process implemented by the terminal device in FIG. 1 is not repeated here.

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

The processors referred to above may include, but are not limited to:

General-purpose processor, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates Or transistor logic devices, discrete hardware components, and so on.

The processor may be used to implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

The memory mentioned above includes but is not limited to:

Volatile memory and/or non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

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

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program. The computer-readable storage medium stores one or more programs including instructions that, when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform methods 300 through 500 The method of the illustrated embodiment.

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 execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.

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 execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and are not repeated here for brevity.

The embodiments of the present application also provide a computer program product, including a computer program.

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 processes implemented by the network device in each method of the embodiments of the present application. Repeat.

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 processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, in order to It is concise and will not be repeated here.

A computer program is also provided in the embodiments of the present application. When the computer program is executed by a computer, the computer can execute the methods of the embodiments shown in method 300 to method 500 .

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

In addition, an embodiment of the present application also provides a communication system, and the communication system may include the above-mentioned terminal equipment and network equipment to form a communication system 100 as shown in FIG. 1 , which is not repeated here for brevity. It should be noted that the terms "system" and the like in this document may also be referred to as "network management architecture" or "network system" and the like.

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.

For example, as used in the embodiments of this application and the appended claims, the singular forms "a," "the," "above," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. meaning.

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

If implemented in the form of a software functional unit and sold or used as a stand-alone product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art or the parts of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may 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 aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and other media that can store program codes.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other manners.

For example, the division of units, modules or components in the apparatus embodiments described above is only a logical function division, and other division methods may be used in actual implementation. For example, multiple units, modules or components may be combined or integrated. To another system, or some units or modules or components can be ignored, or not implemented.

For another example, the above-mentioned units/modules/components described as separate/display components may or may not be physically separated, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units/modules/components may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

Finally, it should be noted that the mutual coupling or direct coupling or communication connection shown or discussed above may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms .

The above contents are only specific implementations of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Changes or substitutions should all be covered within 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

A wireless communication method, comprising:

The bandwidth portion BWP of the terminal device is switched based on channel quality measurements or handover commands for the serving and adjacent satellite beams.
The method according to claim 1, wherein the switching of the bandwidth part BWP of the terminal device based on the channel quality measurement results or switching commands for the serving satellite beam and the adjacent satellite beams comprises:

Obtain the handover command, the handover command includes the identification of the target BWP;

The BWP of the terminal device is switched to the target BWP.
The method according to claim 2, wherein the handover command further comprises an identifier of the target satellite beam and/or information used to indicate the effective time of the handover command.
The method according to any one of claims 1 to 3, wherein the method further comprises:

acquiring first information, which is used to configure a trigger condition for the terminal device to report the channel quality measurement result;

If the channel quality measurement result satisfies the trigger condition, the channel quality measurement result is sent.
The method according to claim 4, wherein the trigger 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 The difference between them is greater than or equal to the first relative threshold.
The method according to claim 4, wherein the trigger 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 terminal device is in the serving satellite The channel quality on the beam is less than or equal to the second absolute threshold.
The method according to any one of claims 1 to 6, wherein the handover command is carried by a physical downlink control channel (PDCCH) or a medium access control control element (MAC CE).
The method according to claim 1, wherein the switching of the bandwidth part BWP of the terminal device based on the channel quality measurement results or switching commands for the serving satellite beam and the adjacent satellite beams comprises:

acquiring second information, which is used to configure a handover criterion for handover of the BWP by the terminal device;

If the channel quality measurement result satisfies the handover criterion, the BWP of the terminal device is handed over.
The method according to claim 8, wherein 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 The difference between them is greater than or equal to the second relative threshold.
The method according to claim 8, wherein the handover criterion is: the channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a third absolute threshold, and the terminal device is in the The channel quality on the serving satellite beam is less than or equal to the fourth absolute threshold.
The method according to any one of claims 8 to 10, wherein a plurality of beams in the adjacent satellite beams satisfy the handover criterion, the method further comprising:

determining a target satellite beam from the plurality of beams;

The BWP of the terminal device is switched to the default BWP associated with the target satellite beam.
The method according to claim 11, wherein the target satellite beam is the beam with the highest channel quality among the plurality of beams; and/or the target satellite beam is the target satellite beam with the largest number of target SSBs among the plurality of beams The target SSB is an SSB whose channel quality is greater than or equal to the fifth absolute threshold.
The method according to any one of claims 8 to 12, wherein the method further comprises:

Send first indication information, where the first indication information is used to indicate that the terminal device has completed the BWP handover.
The method according to claim 13, wherein the sending the first indication information comprises:

A random access channel RACH is initiated on the switched uplink UL BWP to indicate that the terminal device has completed the BWP switch.
The method according to claim 13, wherein the sending the first indication information comprises:

A sounding reference signal SRS is sent on the switched uplink UL BWP to indicate that the terminal device has completed the BWP switch.
The method according to claim 13, wherein the sending the first indication information comprises:

Configure the configuration authorization CG on the handover uplink UL BWP;

A BWP handover medium access control control element MAC CE is sent on the CG, and the BWP MAC CE is used to indicate that the terminal device has completed the BWP handover.
A wireless communication method, comprising:

Receive first indication information or send a handover command based on the channel quality measurement results for the serving satellite beam and the adjacent satellite beam, the handover command is used to instruct the terminal device to switch the bandwidth part BWP, and the first indication information is used to instruct the The terminal device has completed the BWP handover.
The method of claim 17, wherein the handover command includes an identification of the target BWP.
The method according to claim 18, wherein the handover command further comprises an identifier of a target satellite beam and/or information used to indicate an effective time of the handover command.
The method according to any one of claims 17 to 19, wherein the method further comprises:

The first information is sent, which is used to configure a trigger condition for the terminal device to report the channel quality measurement result.
The method according to claim 20, wherein the trigger 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 The difference between them is greater than or equal to the first relative threshold.
The method according to claim 20, wherein the trigger condition comprises: a channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a first absolute threshold, and the terminal device is in the serving satellite The channel quality on the beam is less than or equal to the second absolute threshold.
The method according to any one of claims 17 to 22, wherein the handover command is carried by a physical downlink control channel (PDCCH) or a medium access control control element (MAC CE).
The method of claim 17, wherein the method further comprises:

The second information is sent, which is used to configure the handover criterion for handover of the BWP by the terminal device.
The method according to claim 24, wherein 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 The difference between them is greater than or equal to the second relative threshold.
The method according to claim 24, wherein the handover criterion is: a channel quality of the terminal device on the adjacent satellite beam is greater than or equal to a third absolute threshold, and the terminal device is in the The channel quality on the serving satellite beam is less than or equal to the fourth absolute threshold.
The method according to any one of claims 17 to 26, wherein the receiving the first indication information is used to indicate that the terminal device has completed the BWP by receiving a random access channel RACH on the switched uplink UL BWP switch.
The method according to any one of claims 17 to 26, wherein the receiving the first indication information is used to indicate that the terminal equipment has completed the BWP handover by receiving a sounding reference signal SRS on the handover uplink UL BWP .
The method according to any one of claims 17 to 26, wherein the receiving the first indication information comprises:

On the configuration authorization CG on the switched uplink UL BWP, a BWP switching medium access control control element MAC CE is received, and the BWP MAC CE is used to indicate that the terminal device has completed the BWP switching.
A terminal device, characterized in that it includes:

The processing unit switches the bandwidth portion BWP of the terminal device based on the channel quality measurements or handover commands for the serving satellite beam and the adjacent satellite beams.
A network device, characterized in that it includes:

a communication unit, configured to receive first indication information or send a handover command based on the channel quality measurement results for the serving satellite beam and the adjacent satellite beam, where the handover command is used to instruct the terminal device to switch the bandwidth part BWP, the first indication information It is used to indicate that the terminal device has completed the BWP handover.
A terminal device, characterized in that it includes:

A processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking and running the computer program stored in the memory to perform the method of any one of claims 1 to 16.
A network device, characterized in that it includes:

A processor, a memory and a transceiver, the memory for storing a computer program, the processor for invoking and running the computer program stored in the memory to perform the method of any one of claims 17 to 29.
A chip, characterized in that it includes:

A processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 16 or the method according to any one of claims 17 to 29 method.
A computer-readable storage medium, characterized in that it is used for storing a computer program, and the computer program causes a computer to execute the method according to any one of claims 1 to 16 or the method described in any one of claims 17 to 29. method described.
A computer program product, comprising computer program instructions that cause a computer to perform the method of any one of claims 1 to 16 or the method of any one of claims 17 to 29 method.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 16 or the method of any one of claims 17 to 29.