WO2022021024A1

WO2022021024A1 - Bwp switching method and apparatus, and terminal device

Info

Publication number: WO2022021024A1
Application number: PCT/CN2020/104960
Authority: WO
Inventors: 王淑坤; 石聪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2022-02-03
Also published as: CN116210305A

Abstract

Provided are a BWP switching method and apparatus, and a terminal device. The method comprises: a terminal device switching from a first BWP to a second BWP on the basis of a first trigger indication, wherein the first BWP is a dedicated BWP for receiving a unicast business, and the second BWP is an MBS BWP for receiving a multimedia multicast service (MBS) business; or, the first BWP is the MBS BWP for receiving the MBS business, and the second BWP is the dedicated BWP for receiving the unicast business.

Description

A kind of BWP handover method and apparatus, terminal equipment

technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular, to a method, an apparatus, and a terminal device for switching a bandwidth part (Band Width Part, BWP).

Background technique

Only after the terminal device enters the radio resource control (Radio Resource Control, RRC) connection state, can it receive the multimedia multicast service (Multimedia Broadcast Service, MBS) service. While the terminal equipment receives the MBS service, it also needs to receive the unicast service. How to achieve receiving both types of services at the same time needs to be clarified.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a BWP handover method, apparatus, and terminal device.

The method for BWP handover provided by the embodiment of the present application includes:

The terminal device switches from the first BWP to the second BWP based on the first trigger indication; wherein,

The first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services; or,

The first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services.

The device for BWP handover provided by the embodiment of the present application includes:

a switching unit, configured to switch from the first BWP to the second BWP based on the first trigger instruction; wherein,

The terminal device provided by the embodiments of the present application includes 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 to execute the above-mentioned BWP switching method.

The chip provided by the embodiment of the present application is used to implement the above-mentioned BWP switching method.

Specifically, the chip includes: a processor for invoking and running a computer program from a memory, so that a device installed with the chip executes the above-mentioned BWP switching method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program enables a computer to execute the above-mentioned BWP switching method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned BWP switching method.

The computer program provided by the embodiment of the present application, when it runs on the computer, causes the computer to execute the above-mentioned BWP switching method.

Through the above technical solutions, a mechanism is proposed to realize the switching between the MBS BWP and the dedicated BWP of the terminal equipment, and the switching between the MBS BWP and the dedicated BWP can ensure that the terminal equipment can receive both the MBS service and the unicast service. Thus, it is ensured that two types of services are received at the same time, and the interruption of another type of service caused by the reception of one type of service is avoided.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

2 is a schematic flowchart of a method for BWP handover provided by an embodiment of the present application;

3 is a schematic diagram of a BWP handover provided by an embodiment of the present application;

4 is a schematic structural diagram of a device for BWP handover provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

6 is a schematic structural diagram of a chip according to an embodiment of the present application;

FIG. 7 is a schematic block diagram of a communication system 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.

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 Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex) , TDD), systems, 5G communication systems or future communication systems, etc.

Exemplarily, a communication system 100 to which this embodiment of the present application is applied is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the The network device can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system.

The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110 . "Terminal" as used herein includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connections; and/or another data connection/network; and/or via a wireless interface, e.g. for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and/or a device of another terminal configured to receive/transmit a communication signal; and/or an Internet of Things (IoT) device. A terminal arranged to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radio telephones with data processing, facsimile, and data communication capabilities; may include radio telephones, pagers, Internet/Intranet PDAs with networking access, web browsers, memo pads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or others including radiotelephone transceivers electronic device. A terminal may refer to an access terminal, user equipment (UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, 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, terminals in 5G networks or terminals in future evolved PLMNs, etc.

Optionally, direct terminal (Device to Device, D2D) communication may be performed between the terminals 120 .

Optionally, the 5G communication system or the 5G network may also be referred to as a new radio (New Radio, NR) system or an NR network.

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminals. This embodiment of the present application This is not limited.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal 120 with a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; The device may further include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that 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.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the following describes the technical solutions related to the embodiments of the present application.

With people's pursuit of speed, delay, high-speed mobility, energy efficiency, and the diversity and complexity of services in future life, the ^3rd Generation Partnership Project (3GPP) international standards organization began to develop 5G . The main application scenarios of 5G are: Enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communications (URLLC), Massive Machine-Type Communications (mMTC) ).

On the one hand, eMBB still aims at users' access to multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., its capabilities and requirements are also quite different, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety assurance, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of the module.

In the early deployment of NR, complete NR coverage is difficult to obtain, so typical network coverage is wide-area LTE coverage and NR island coverage mode. And a lot of LTE is deployed in sub-6GHz, and there is very little sub-6GHz spectrum available for 5G. Therefore, NR must study the spectrum application above 6GHz, while the high frequency band has limited coverage and fast signal fading. At the same time, in order to protect the early investment of mobile operators in LTE, a working mode of tight interworking between LTE and NR is proposed.

RRC status

5G defines a new Radio Resource Control (RRC) state, that is, RRC_INACTIVE state, in order to reduce air interface signaling, quickly restore wireless connections, and quickly restore data services. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state. in,

1) RRC_IDLE state (referred to as idle state): mobility is based on terminal device cell selection and reselection, paging is initiated by the core network (Core Network, CN), and the paging area is configured by the CN. There is no terminal device context and no RRC connection on the base station side.

2) RRC_CONNECTED state (referred to as connected (connected) state for short): there is an RRC connection, and a terminal device context exists on the base station side and the terminal device side. The network side knows that the location of the terminal equipment is at the specific cell level. Mobility is the mobility controlled by the network side. Unicast data can be transmitted between the terminal equipment and the base station.

3) RRC_INACTIVE state (referred to as inactive state): mobility is based on terminal equipment cell selection reselection, there is a connection between CN-NR, terminal equipment context exists on a certain base station, paging is triggered by RAN , the RAN-based paging area is managed by the RAN, and the network side knows the location of the terminal device is based on the RAN-based paging area level.

BWP

The maximum channel bandwidth in 5G may be 400MHz (ie, broadband), which is very large compared to the maximum channel bandwidth of 20MHz in LTE. If the terminal device keeps operating on the wideband carrier (ie the maximum channel bandwidth), the power consumption of the terminal device is large. Therefore, it is suggested that the radio frequency bandwidth of the terminal equipment can be adjusted according to the actual throughput of the terminal equipment. For this reason, the concept of BWP is introduced. The motivation for introducing BWP is to optimize the power consumption of the terminal equipment. For example, if the rate requirement of the terminal device is very low, a smaller bandwidth (that is, a BWP with a smaller bandwidth) can be configured for the terminal device. If the rate requirement of the terminal device is high, a larger bandwidth (that is, a higher bandwidth) large BWP). If the terminal device supports a high rate, or operates in a carrier aggregation (Carrier aggregation, CA) mode, multiple BWPs may be configured for the terminal device. In addition, another purpose of the BWP is to trigger the coexistence of multiple parameter sets (numerology) in a cell, for example, BWP1 corresponds to number 1, and BWP 2 corresponds to number 2.

The terminal device in the idle or inactive state resides on the initial BWP (initial BWP). The initial BWP is visible to the terminal device in the idle or inactive state. The terminal device can obtain the master information block (Master Information) on the initial BWP. Block, MIB), remaining minimum system information (Remaining Minimum system Information, RMSI), other system information (Other System Information, OSI) and paging (paging) and other information.

MBMS

MBMS is a technology that transmits data from a data source to multiple terminal devices by sharing network resources. This technology can effectively utilize network resources while providing multimedia services, and realize the broadcast of multimedia services at higher rates (such as 256kbps). and multicast.

Due to the low spectral efficiency of MBMS, it is not enough to effectively carry and support the operation of mobile TV type services. Therefore, in LTE, 3GPP clearly proposes to enhance the support capability for downlink high-speed MBMS services, and determines the design requirements for the physical layer and air interface.

3GPP R9 introduced evolved MBMS (evolved MBMS, eMBMS) into LTE. eMBMS proposes the concept of Single Frequency Network (SFN), namely Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN), MBSFN uses a uniform frequency to send service data in all cells at the same time, but To ensure synchronization between cells. In this way, the overall signal-to-noise ratio distribution of the cell can be greatly improved, and the spectral efficiency will also be greatly improved accordingly. eMBMS implements service broadcast and multicast based on IP multicast protocol.

In LTE or LTE-Advanced (LTE-Advanced, LTE-A), MBMS has only a broadcast bearer mode and no multicast bearer mode. In addition, the reception of the MBMS service is applicable to the terminal equipment in the idle state or the connected state.

The concept of Single Cell Point To Multiploint (SC-PTM) was introduced in 3GPP R13, and SC-PTM is based on the MBMS network architecture.

MBMS introduces new logical channels, including Single Cell Multicast Control Channel (SC-MCCH) and Single Cell Multicast Transport Channel (SC-MTCH). SC-MCCH and SC-MTCH are mapped to downlink shared channel (Downlink-Shared Channel, DL-SCH), further, DL-SCH is mapped to physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), wherein, SC - MCCH and SC-MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels. SC-MCCH and SC-MTCH do not support hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) operations.

MBMS introduces a new system information block (System Information Block, SIB) type, namely SIB20. Specifically, the configuration information of the SC-MCCH is transmitted through the SIB20, and a cell has only one SC-MCCH. The configuration information of the SC-MCCH includes the modification period of the SC-MCCH, the repetition period of the SC-MCCH, and information such as the radio frame and subframe in which the SC-MCCH is scheduled. Further, 1) the boundary of the modification period of SC-MCCH satisfies SFN mod m=0, where SFN represents the system frame number of the boundary, and m is the modification period of SC-MCCH configured in SIB20 (ie sc-mcch-ModificationPeriod). 2) The radio frame for scheduling SC-MCCH satisfies: SFN mod mcch-RepetitionPeriod=mcch-Offset, where SFN represents the system frame number of the radio frame, mcch-RepetitionPeriod represents the repetition period of SC-MCCH, and mcch-Offset represents SC-MCCH offset. 3) The subframe in which the SC-MCCH is scheduled is indicated by sc-mcch-Subframe.

The SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH). On the one hand, a new wireless network temporary identity (Radio Network Tempory Identity, RNTI), that is, a single cell RNTI (Single Cell RNTI, SC-RNTI), is introduced to identify the PDCCH (such as SC-MCCH PDCCH) used for scheduling SC-MCCH, Optionally, the fixed value of SC-RNTI is FFFC. On the other hand, a new RNTI is introduced, that is, a single cell notification RNTI (Single Cell Notification RNTI, SC-N-RNTI) to identify the PDCCH (such as the notification PDCCH) used to indicate the change notification of the SC-MCCH, optionally, the SC The fixed value of -N-RNTI is FFFB; further, one of the 8 bits (bits) of DCI 1C can be used to indicate the change notification. In LTE, the configuration information of the SC-PTM is based on the SC-MCCH configured by the SIB20, and then the SC-MCCH configures the SC-MTCH, and the SC-MTCH is used to transmit service data.

Specifically, the SC-MCCH only transmits one message (ie, SCPTMConfiguration), which is used to configure the configuration information of the SC-PTM. The configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session identifier (session id), group RNTI (Group RNTI, G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information And the SC-PTM service information of neighboring cells, etc. It should be noted that the SC-PTM in R13 does not support the Robust Header Compression (ROHC) function.

Downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, the timer onDurationTimerSCPTM is started;

When receiving the downlink PDCCH scheduling, start the timer drx-InactivityTimerSCPTM;

The downstream SC-PTM service is received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

SC-PTM business continuity adopts the concept of MBMS business continuity based on SIB15, namely "SIB15+MBMSInterestIndication" mode. The service continuity of terminal equipment in idle state is based on the concept of frequency priority.

In the technical solutions of the embodiments of the present application, a new SIB (called the first SIB) is defined, and the first SIB includes the configuration information of the first MCCH. Here, the first MCCH is the control channel of the MBMS service. An SIB is used to configure the configuration information of the control channel of the NR MBMS. Optionally, the control channel of the NR MBMS may also be called the NR MCCH (that is, the first MCCH).

Further, the first MCCH is used to carry the first signaling, and the embodiment of this application does not limit the name of the first signaling. For example, the first signaling is signaling A, and the first signaling includes at least one first MTCH. Here, the first MTCH is a service channel (also called a data channel or a transmission channel) of the MBMS service, and the first MTCH is used to transmit MBMS service data (such as NR MBMS service data). In other words, the first MCCH is used to configure the configuration information of the traffic channel of the NR MBMS. Optionally, the traffic channel of the NR MBMS may also be called the NR MTCH (that is, the first MTCH).

Specifically, the first signaling is used to configure a service channel of the NR MBMS, service information corresponding to the service channel, and scheduling information corresponding to the service channel. Further, optionally, the service information corresponding to the service channel, such as TMGI, session id and other identification information for identifying services. The scheduling information corresponding to the traffic channel, for example, the RNTI used when the MBMS service data corresponding to the traffic channel is scheduled, such as G-RNTI, DRX configuration information, and the like.

It should be noted that the transmissions of the first MCCH and the first MTCH are both scheduled based on the PDCCH. The RNTI used for scheduling the PDCCH of the first MCCH uses a network-wide unique identifier, that is, a fixed value. The RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.

It should be noted that, this embodiment of the present application does not limit the naming of the first SIB, the first MCCH, and the first MTCH. For the convenience of description, the first SIB may also be abbreviated as SIB, the first MCCH may also be abbreviated as MCCH, and the first MTCH may also be abbreviated as MTCH. ) and notify the PDCCH, wherein the PDSCH (ie, the MCCH PDSCH) for transmitting the MCCH is scheduled through the DCI carried by the MCCH PDCCH. Further, configure M PDCCHs (ie, MTCH 1PDCCH, MTCH 2PDCCH, . , n is an integer greater than or equal to 1 and less than or equal to M. MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, wherein MCCH and MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels.

It should be noted that the MBMS services in the above solution include but are not limited to multicast services and multicast services. The embodiments of the present application are described by taking the MBS service as an example, and the description of "MBS service" may also be replaced with "multicast service" or "multicast service" or "MBMS service".

In NR, the terminal equipment can only receive the MBS service after entering the connected state, and the terminal equipment needs to receive the unicast service (eg eMBB service) while receiving the MBS service. The terminal device can only receive service data on one BWP at the same time, so the terminal device needs to switch between the MBS BWP for receiving MBS services and the dedicated BWP for receiving unicast services to ensure that both types are performed simultaneously. receipt of business. To this end, the following technical solutions of the embodiments of the present application are proposed.

2 is a schematic flowchart of a method for BWP handover provided by an embodiment of the present application. As shown in FIG. 2 , the method for BWP handover includes the following steps:

Step 201: The terminal device switches from the first BWP to the second BWP based on the first trigger instruction; wherein the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is for receiving MBS services or, the first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services.

In the embodiments of the present application, the concept of MBS BWP is defined, and the MBS BWP is used for terminal equipment to receive MBS services and for network equipment to send MBS services. Here, the network device may be a base station, such as a gNB.

In the embodiment of the present application, the dedicated BWP refers to a dedicated BWP for terminal equipment (also referred to as a UE-specific BWP), and the dedicated BWP is used for terminal equipment to receive unicast services and for network equipment to send unicast services. Here, the unicast service includes but is not limited to eMBB service.

In this embodiment of the present application, the terminal device receives second configuration information, where the second configuration information includes configuration information of the MBS BWP and configuration information of at least one dedicated BWP. Further, optionally, the second configuration information is carried in RRC dedicated signaling.

For example, the network device configuration configures the MBS BWP and at least one UE-specific BWP (referred to as a dedicated BWP for short) through RRC dedicated signaling. The terminal device in the RRC connected state obtains the configuration information of the MBS BWP and the configuration information of at least one dedicated BWP through RRC dedicated signaling.

In an optional manner, the configuration information of the MBS BWP includes, but is not limited to, the time-frequency resource location of the MBS BWP, the bandwidth of the MBS BWP, the subcarrier spacing of the MBS BWP, the control resource set configuration of the MBS BWP, and the search space of the MBS BWP. configuration, etc.

In an optional manner, the network device configuration also configures the MBS service through RRC dedicated signaling. The terminal device in the RRC connection state obtains configuration information of the MBS service through RRC dedicated signaling, for example, configuration information such as the identification of the MBS service (eg, TMGI, G-RNTI).

In this embodiment of the present application, the terminal device switches from the first BWP to the second BWP based on the first trigger instruction. Here, the first BWP and the second BWP are implemented in two cases, and the following describes how the terminal device switches from the first BWP to the second BWP based on the first trigger instruction in combination with the two cases.

● Case 1: the case where the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services.

In this case, the terminal device switches from the currently activated dedicated BWP to the MBS BWP, which can be achieved in the following ways.

Manner 1: the terminal device starts a first timer; if the first timer times out, the terminal device switches from the first BWP to the second BWP.

In this embodiment of the present application, the terminal device receives first configuration information, where the first configuration information includes configuration information of the first timer, and the configuration information of the first timer is used to determine the first timing duration of the device. Further, optionally, the first configuration information is carried in RRC dedicated signaling.

In an optional manner, in response to the terminal device receiving the configuration information of the first timer, the terminal device starts the first timer.

In an optional manner, the moment when the terminal device starts the first timer is the moment corresponding to the first radio frame and/or the first time slot. Here, the system frame number (System Frame Number, SFN) of the first radio frame satisfies the following formula: SFN mod T=offset, where T is the duration of the first timer or the first period configured by the network side duration, offset is the offset value configured on the network side. The time slot number of the first time slot is configured by the network side.

In an optional manner, the moment when the terminal device starts the first timer is the moment corresponding to the first radio frame and/or the first time slot. Here, the SFN of the first radio frame is configured by the network side. The time slot number of the first time slot is configured by the network side.

In an example, the terminal device receives configuration information of the first timer configured by the network side through RRC dedicated signaling, where the configuration information of the first timer includes configuration information of the length of the first timer. The moment when the terminal device starts the first timer may be based on the following conditions:

Condition 1: The terminal device starts the first timer after receiving the configuration information of the first timer;

Condition 2: When the terminal device receives the configuration information of the first timer, it also receives the configuration information of the first period and the configuration information of the offset. The moment when the first timer is started is the moment corresponding to the SFN, and the SFN satisfies the following formula: SFN mod T=offset, where T is the duration of the first timer or the duration of the first cycle configured by the network side, offset Bias value configured for the network side.

Condition 3: When the terminal device receives the configuration information of the first timer, it also receives the SFN and/or the time slot number configured by the network side, and the time corresponding to the SFN and/or the time slot number is for the terminal device to start the first timer The absolute moment of the device.

In this embodiment of the present application, if the first timer times out, the terminal device automatically switches to the MBS BWP.

Manner 2: After receiving the first DCI, the terminal device switches from the first BWP to the second BWP; wherein the first DCI carries first indication information, and the first indication information is used to indicate at least one of the following : The logo of MBS BWP, switch the current BWP to MBS BWP.

In an optional manner, the first DCI further carries first scheduling information, the first scheduling information is used to schedule MBS services on the MBS BWP, and the first indication information is further used to indicate that the scheduled BWP is MBS BWP.

In the embodiment of the present application, the PDCCH where the first DCI is located is scrambled by C-RNTI; or, the PDCCH where the first DCI is located is scrambled by G-RNTI.

In an example, the terminal device monitors the DCI corresponding to the terminal device on a UE-specific Searchspace (UE-specific Searchspace, USS) on the currently activated dedicated BWP. 1) The terminal device monitors the PDCCH scrambled by the C-RNTI, and obtains the first DCI from the PDCCH, where the first indication information and the first scheduling information do not exist in the first DCI. The first indication information is used to indicate at least one of the following: the identification of the MBS BWP, and switching the current BWP to the MBS BWP. Or, 2) The terminal device monitors the PDCCH scrambled by the C-RNTI, and obtains the first DCI from the PDCCH, where the first indication information and the first scheduling information exist in the first DCI. The first scheduling information is used to schedule the MBS service on the MBS BWP. The first indication information is used to indicate at least one of the following: the identification of the MBS BWP, switching the current BWP to the MBS BWP, and the scheduled BWP being the MBS BWP.

It should be noted that the PDCCH where the first DCI is located may not be scrambled by C-RNTI, but by G-RNTI. In this case, the terminal device can also monitor the PDCCH scrambled by G-RNTI. The first DCI is obtained from the PDCCH.

In the embodiment of the present application, after receiving the first DCI, the terminal device switches to the MBS BWP, and performs monitoring of the scheduling information of the MBS service and data reception of the MBS service on the MBS BWP.

● Case 2: the case where the first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services.

In this case, the terminal device switches from the MBS BWP to the dedicated BWP, which can be achieved in the following ways. After receiving the second DCI, the terminal device switches from the first BWP to the second BWP; wherein the second DCI carries second indication information, and the second indication information is used to indicate at least one of the following: target dedicated Identifies the BWP, and switches the current BWP to the target-specific BWP.

In the above solution, the target dedicated BWP refers to the default activated BWP after the terminal device leaves the MBS BWP, and the default activated BWP is configured through RRC signaling; or, the target dedicated BWP refers to the network side for the terminal device. Configured initial activation BWP.

A) In an optional manner, the PDCCH where the second DCI is located is scrambled by C-RNTI.

Further, optionally, the second DCI further carries second scheduling information, where the second scheduling information is used to schedule a unicast service on the target dedicated BWP.

B) In an optional manner, the PDCCH where the second DCI is located is scrambled by G-RNTI.

In an example, the MBS BWP is configured with USS, the terminal equipment MBS BWP can monitor the PDCCH scrambled by C-RNTI, obtain the second DCI from the PDCCH, and the second DCI contains the second indication information, the said The second indication information is used to indicate at least one of the following: an identifier of the target dedicated BWP, and switching the current BWP to the target dedicated BWP. Here, the target dedicated BWP is configured through RRC signaling, for example, the default activated BWP (that is, the target dedicated BWP) after the terminal device leaves the MBS BWP is configured through RRC signaling. Alternatively, the target dedicated BWP is the initial activated BWP configured on the network side. The terminal device switches to the target dedicated BWP according to the second DCI. Further, optionally, the second DCI may or may not carry second scheduling information, where the second scheduling information is used to schedule a unicast service on the target dedicated BWP.

It should be noted that, for the PDCCH scrambled by the C-RNTI, the second finger information in the PDCCH will trigger a terminal device to switch from the MBS BWP to the target dedicated BWP.

In an example, the terminal device monitors the PDCCH scrambled by the G-RNTI on the MBS BWP, and obtains the second DCI from the PDCCH, where second indication information exists in the second DCI, and the second indication information is used to indicate At least one of the following: identification of the target dedicated BWP, switching the current BWP to the target dedicated BWP. Here, the target dedicated BWP is configured through RRC signaling, for example, the default activated BWP (that is, the target dedicated BWP) after the terminal device leaves the MBS BWP is configured through RRC signaling. Alternatively, the target dedicated BWP is the initial activated BWP configured on the network side. The terminal device switches to the target dedicated BWP according to the second DCI. Further, optionally, the second DCI does not carry the scheduling information of the unicast service.

It should be noted that, for the PDCCH scrambled by the G-RNTI, the second finger information in the PDCCH will trigger a group of terminal devices to switch from the MBS BWP to the respective target dedicated BWP. For the target dedicated BWP of each terminal device, it can be configured through RRC signaling or initially activated BWP.

Referring to Fig. 3, the terminal device can switch from the dedicated BWP1 (as the current activated BWP of the terminal device) to the MBS BWP, thereby realizing the reception of the MBS PDSCH on the MBS BWP, and the MBS PDSCH is used to carry the MBS service. The terminal device can also switch from the MBS BWP to the dedicated BWP2, so as to realize the reception of unicast services on the dedicated BWP2. Here, the dedicated BWP2 can be the default activated BWP after the terminal device configured by RRC signaling leaves the MBS BWP, or it can be the terminal device. The device's initial activation BWP.

The technical solutions of the embodiments of the present application propose a mechanism for performing BWP switching in the process of receiving MBS services and unicast services by terminal equipment in an NR system. By performing BWP switching, it is ensured that two types of services are received at the same time, thereby avoiding the need for receiving one service. And lead to the interruption of another business.

FIG. 4 is a schematic structural diagram of a device for BWP handover provided by an embodiment of the present application, which is applied to terminal equipment. As shown in FIG. 4 , the device for BWP handover includes:

A switching unit 401, configured to switch from the first BWP to the second BWP based on the first trigger instruction; wherein,

In an optional manner, when the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services,

The apparatus further includes: a starting unit 402, configured to start a first timer;

The switching unit 401 is configured to switch from the first BWP to the second BWP if the first timer times out.

In an optional manner, in response to the terminal device receiving the configuration information of the first timer, the starting unit 402 starts the first timer

In an optional manner, the time when the starting unit 402 starts the first timer is the time corresponding to the first radio frame and/or the first time slot.

In an optional manner, the SFN of the first radio frame satisfies the following formula: SFN mod T=offset, where T is the duration of the first timer or the duration of the first cycle configured by the network side, offset Bias value configured for the network side.

In an optional manner, the SFN of the first radio frame is configured by the network side.

In an optional manner, the time slot number of the first time slot is configured by the network side.

In an optional manner, the device further includes:

The receiving unit 403 is configured to receive first configuration information, where the first configuration information includes configuration information of the first timer, where the configuration information of the first timer is used to determine the duration of the first timer.

In an optional manner, the first configuration information is carried in RRC dedicated signaling.

The apparatus further includes: a receiving unit 403, configured to receive the first DCI;

The switching unit 401 is configured to switch from the first BWP to the second BWP after the receiving unit 403 receives the first DCI; wherein the first DCI carries first indication information, and the first indication information It is used to indicate at least one of the following: identification of the MBS BWP, switching the current BWP to the MBS BWP.

In an optional manner, the PDCCH where the first DCI is located is scrambled by C-RNTI; or,

The PDCCH where the first DCI is located is scrambled by G-RNTI.

In an optional manner, when the first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services,

The apparatus further includes: a receiving unit 403, configured to receive the second DCI;

The switching unit 401 is configured to switch from the first BWP to the second BWP after the receiving unit 403 receives the second DCI; wherein the second DCI carries second indication information, and the second indication information It is used to indicate at least one of the following: identification of the target dedicated BWP, switching the current BWP to the target dedicated BWP.

In an optional manner, the target dedicated BWP refers to the default activated BWP after the terminal device leaves the MBS BWP, and the default activated BWP is configured through RRC signaling; or,

The target dedicated BWP refers to the initial activated BWP configured by the network side for the terminal device.

In an optional manner, the PDCCH where the second DCI is located is scrambled by C-RNTI.

In an optional manner, the second DCI further carries second scheduling information, where the second scheduling information is used to schedule a unicast service on the target dedicated BWP.

In an optional manner, the PDCCH where the second DCI is located is scrambled by G-RNTI.

In an optional manner, the device further includes:

The receiving unit 403 is configured to receive second configuration information, where the second configuration information includes configuration information of the MBS BWP and configuration information of at least one dedicated BWP.

In an optional manner, the second configuration information is carried in RRC dedicated signaling.

It should be understood by those skilled in the art that the relevant description of the apparatus for BWP handover in the embodiment of the present application can be understood with reference to the relevant description of the BWP handover method in the embodiment of the present application.

FIG. 5 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 500 shown in FIG. 5 includes a processor 510, and the processor 510 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in FIG. 5 , the communication device 500 may further include a memory 520 . The processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.

The memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .

Optionally, as shown in FIG. 5 , the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.

Among them, the transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 500 may specifically be a network device in this embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 500 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. , and will not be repeated here.

FIG. 6 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in this embodiment of the present application.

Optionally, as shown in FIG. 6 , the chip 600 may further include a memory 620 . The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, the chip 600 may further include an input interface 630 . The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the chip 600 may further include an output interface 640 . The processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. For brevity, here No longer.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

FIG. 7 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 7 , the communication system 700 includes a terminal device 710 and a network device 720 .

The terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. 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 modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or 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 of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and 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 (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (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 connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.

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.

Embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause 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 instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.

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

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.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill 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. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

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 system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause 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 various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method for bandwidth part BWP handover, the method comprising:

The terminal device switches from the first BWP to the second BWP based on the first trigger indication; wherein,

The first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services for multimedia multicast services; or,

The first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services.
The method according to claim 1, wherein, when the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services,

The terminal device switches from the first BWP to the second BWP based on the first trigger instruction, including:

The terminal device starts a first timer; if the first timer times out, the terminal device switches from the first BWP to the second BWP.
The method of claim 2, wherein the terminal device starts the first timer in response to the terminal device receiving the configuration information of the first timer.
The method according to claim 2, wherein the moment when the terminal device starts the first timer is the moment corresponding to the first radio frame and/or the first time slot.
The method according to claim 4, wherein the system frame number SFN of the first radio frame satisfies the following formula: SFN mod T=offset, wherein T is the duration of the first timer or is configured by the network side The duration of the first cycle, offset is the offset value configured on the network side.
The method according to claim 4, wherein the SFN of the first radio frame is configured by the network side.
The method according to any one of claims 4 to 6, wherein the time slot number of the first time slot is configured by the network side.
The method according to any one of claims 2 to 7, wherein the method further comprises:

The terminal device receives first configuration information, where the first configuration information includes configuration information of the first timer, where the configuration information of the first timer is used to determine the duration of the first timer.
The method according to claim 8, wherein the first configuration information is carried in RRC dedicated signaling.
The method according to claim 1, wherein, when the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services,

The terminal device switches from the first BWP to the second BWP based on the first trigger instruction, including:

After receiving the first downlink control information DCI, the terminal device switches from the first BWP to the second BWP; wherein, the first DCI carries first indication information, and the first indication information is used to indicate at least one of the following 1: The logo of MBS BWP, switch the current BWP to MBS BWP.
The method according to claim 10, wherein the first DCI further carries first scheduling information, the first scheduling information is used to schedule MBS services on the MBS BWP, and the first indication information is further used to indicate scheduling The BWP is MBS BWP.
A method according to claim 10 or 11, wherein,

The physical downlink control channel PDCCH where the first DCI is located is scrambled by the cell wireless network temporary identifier C-RNTI; or,

The PDCCH where the first DCI is located is scrambled by the group wireless network temporary identifier G-RNTI.
The method according to claim 1, wherein, when the first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services,

The terminal device switches from the first BWP to the second BWP based on the first trigger instruction, including:

After receiving the second DCI, the terminal device switches from the first BWP to the second BWP; wherein the second DCI carries second indication information, and the second indication information is used to indicate at least one of the following: target dedicated Identifies the BWP, and switches the current BWP to the target-specific BWP.
The method of claim 13, wherein,

The target dedicated BWP refers to the default activated BWP after the terminal device leaves the MBS BWP, and the default activated BWP is configured through RRC signaling; or,

The target dedicated BWP refers to the initial activated BWP configured by the network side for the terminal device.
The method according to claim 13 or 14, wherein the PDCCH where the second DCI is located is scrambled by C-RNTI.
The method of claim 15, wherein the second DCI further carries second scheduling information, and the second scheduling information is used to schedule unicast services on the target dedicated BWP.
The method according to claim 13 or 14, wherein the PDCCH where the second DCI is located is scrambled by G-RNTI.
The method of any one of claims 1 to 17, wherein the method further comprises:

The terminal device receives second configuration information, where the second configuration information includes configuration information of the MBS BWP and configuration information of at least one dedicated BWP.
The method of claim 18, wherein the second configuration information is carried in RRC dedicated signaling.
An apparatus for BWP handover, applied to terminal equipment, the apparatus comprising:

a switching unit, configured to switch from the first BWP to the second BWP based on the first trigger instruction; wherein,

The first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services; or,

The first BWP is an MBS BWP for receiving MBS services, and the second BWP is a dedicated BWP for receiving unicast services.
The apparatus according to claim 20, wherein, when the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services,

The device further includes: a starting unit for starting the first timer;

The switching unit is configured to switch from the first BWP to the second BWP if the first timer times out.
The apparatus according to claim 21, wherein, in response to the terminal device receiving the configuration information of the first timer, the starting unit starts the first timer.
The apparatus according to claim 21, wherein the time when the starting unit starts the first timer is the time corresponding to the first radio frame and/or the first time slot.
The apparatus according to claim 23, wherein the SFN of the first radio frame satisfies the following formula: SFN mod T=offset, wherein T is the duration of the first timer or the first period configured by the network side duration, offset is the offset value configured on the network side.
The apparatus according to claim 23, wherein the SFN of the first radio frame is configured by the network side.
The apparatus according to claim 24 or 25, wherein the time slot number of the first time slot is configured by the network side.
The apparatus of any one of claims 21 to 26, wherein the apparatus further comprises:

A receiving unit, configured to receive first configuration information, where the first configuration information includes configuration information of the first timer, where the configuration information of the first timer is used to determine the duration of the first timer.
The apparatus of claim 27, wherein the first configuration information is carried in RRC dedicated signaling.
The apparatus according to claim 20, wherein, when the first BWP is a dedicated BWP for receiving unicast services, and the second BWP is an MBS BWP for receiving MBS services,

The apparatus further includes: a receiving unit for receiving the first DCI;

The switching unit is configured to switch from the first BWP to the second BWP after the receiving unit receives the first DCI; wherein the first DCI carries first indication information, and the first indication information is used for Indicates at least one of the following: identification of the MBS BWP, switching the current BWP to the MBS BWP.
The apparatus according to claim 29, wherein the first DCI further carries first scheduling information, the first scheduling information is used to schedule MBS services on the MBS BWP, and the first indication information is further used to indicate scheduling The BWP is MBS BWP.
An apparatus according to claim 29 or 30, wherein,

The PDCCH where the first DCI is located is scrambled by the C-RNTI; or,

The PDCCH where the first DCI is located is scrambled by G-RNTI.
The apparatus according to claim 20, wherein, when the first BWP is an MBS BWP for receiving an MBS service, and the second BWP is a dedicated BWP for receiving a unicast service,

The apparatus further includes: a receiving unit for receiving the second DCI;

The switching unit is configured to switch from the first BWP to the second BWP after the receiving unit receives the second DCI; wherein the second DCI carries second indication information, and the second indication information is used for Indicates at least one of the following: identification of the target-dedicated BWP, switching the current BWP to the target-dedicated BWP.
The apparatus of claim 32, wherein,

The target dedicated BWP refers to the default activated BWP after the terminal device leaves the MBS BWP, and the default activated BWP is configured through RRC signaling; or,

The target dedicated BWP refers to the initial activated BWP configured by the network side for the terminal device.
The apparatus according to claim 32 or 33, wherein the PDCCH where the second DCI is located is scrambled by C-RNTI.
The apparatus of claim 34, wherein the second DCI further carries second scheduling information, and the second scheduling information is used to schedule unicast services on the target dedicated BWP.
The apparatus according to claim 32 or 33, wherein the PDCCH where the second DCI is located is scrambled by G-RNTI.
The apparatus of any one of claims 20 to 36, wherein the apparatus further comprises:

A receiving unit, configured to receive second configuration information, where the second configuration information includes configuration information of the MBS BWP and configuration information of at least one dedicated BWP.
The apparatus of claim 37, wherein the second configuration information is carried in RRC dedicated signaling.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and executes any one of claims 1 to 19. Methods.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method according to any one of claims 1 to 19.
A computer-readable storage medium storing a computer program that causes a computer to perform the method of any one of claims 1 to 19.
A computer program product comprising computer program instructions that cause a computer to perform the method of any one of claims 1 to 19.
A computer program that causes a computer to perform the method of any one of claims 1 to 19.