CN116210305A

CN116210305A - BWP switching method and device and terminal equipment

Info

Publication number: CN116210305A
Application number: CN202080104608.2A
Authority: CN
Inventors: 王淑坤; 石聪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2023-06-02
Also published as: WO2022021024A1

Abstract

The embodiment of the application provides a BWP switching method and device and terminal equipment, wherein the method comprises the following steps: 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 a unicast service, and the second BWP is an MBS BWP for receiving a multimedia multicast service MBS service; alternatively, 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.

Description

BWP switching method and device and terminal equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a method and a device for switching bandwidth Part (BWP) and terminal equipment.

Background

The terminal device can receive the multimedia multicast service (Multimedia Broadcast Service, MBS) service after entering a radio resource control (Radio Resource Control, RRC) connected state. While receiving MBS service, the terminal device also needs to receive unicast service. It is clear how to achieve simultaneous reception of both types of traffic.

Disclosure of Invention

The embodiment of the application provides a BWP switching method and device and terminal equipment.

The BWP switching method provided by the embodiment of the application comprises the following steps:

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 a unicast service, and the second BWP is an MBS BWP for receiving an MBS service; or,

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 BWP switching device provided in 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 indication; wherein,

The terminal equipment provided by the embodiment of the application comprises 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 BWP switching method.

The chip provided by the embodiment of the application is used for realizing the BWP switching method.

Specifically, the chip includes: and a processor for calling and running the computer program from the memory, so that the device mounted with the chip performs the BWP switching method described above.

The computer readable storage medium provided in the embodiments of the present application is configured to store a computer program, where the computer program causes a computer to execute the BWP switching method described above.

The computer program product provided in the embodiments of the present application includes computer program instructions that cause a computer to perform the BWP switching method described above.

The computer program provided in the embodiments of the present application, when executed on a computer, causes the computer to perform the BWP switching method described above.

By the technical scheme, a mechanism is provided to realize the switching of the terminal equipment between the MBS BWP and the special BWP, and the switching between the MBS BWP and the special BWP can ensure that the terminal equipment can receive both MBS services and unicast services, thereby ensuring that the two types of services are received simultaneously and avoiding the interruption of one type of services caused by the reception of the other type of services.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

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

fig. 2 is a flow chart of a BWP switching method according to an embodiment of the present application;

fig. 3 is a schematic diagram of BWP switching provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a BWP switching device according to an embodiment of the present disclosure;

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

FIG. 6 is a schematic block diagram of a chip of an embodiment of the present application;

fig. 7 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), systems, 5G communication systems, future communication systems, or the like.

Exemplary, a communication system 100 to which embodiments of the present application apply 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, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Alternatively, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in the LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle 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, etc.

The communication system 100 further includes at least one terminal 120 located within the coverage area of the network device 110. "terminal" as used herein includes, but is not limited to, connection via wireline, such as via public-switched telephone network (Public Switched Telephone Networks, PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and/or means of the other terminal arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminals arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network or a terminal in a future evolved PLMN, etc.

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

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

Fig. 1 illustrates one network device and two terminals, alternatively, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within a coverage area, which is not limited in this embodiment.

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

It should be understood that a device having a communication function in a network/system in an embodiment of the present application 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 communication functions, where the network device 110 and the terminal 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In order to facilitate 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 the pursuit of speed, delay, high speed mobility, energy efficiency and diversity and complexity of future life business, the third generation partnership project (3 ^rd Generation Partnership Project,3 GPP) international standards organization began developing 5G. The main application scenario of 5G is: enhanced mobile Ultra-wideband (enhanced Mobile Broadband, emmbb), low latency high reliability communication (URLLC), large-scale Machine-based communication (mctc).

On the one hand, embbs still target users to obtain multimedia content, services and data, and their demand is growing very rapidly. On the other hand, since an eMBB may be deployed in different scenarios, such as indoors, urban, rural, etc., its capabilities and requirements are also quite different, so that detailed analysis must be performed in connection with a specific deployment scenario, not in general. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

At early deployment of NRs, full NR coverage is difficult to acquire, so typical network coverage is wide area LTE coverage and island coverage mode of NRs. And a large amount of LTE is deployed below 6GHz, and the frequency spectrum below 6GHz which can be used for 5G is few. NR must study spectral applications above 6GHz while high-band coverage is limited and signal fading is fast. Meanwhile, in order to protect the mobile operators from early investment in LTE, a working mode of tight coupling (tight interworking) between LTE and NR is proposed.

RRC state

5G for the purposes of reducing air interface signaling and fast recovery of radio connections, fast recovery of data traffic, a new radio resource control (Radio Resource Control, RRC) state, namely an RRC INACTIVE (RRC_INACTIVE) state, is defined. This state is different from the RRC IDLE (rrc_idle) state and the RRC ACTIVE (rrc_active) state. Wherein,

1) Rrc_idle state (simply referred to as IDLE state): mobility is cell selection reselection based on terminal equipment, paging is initiated by a Core Network (CN), and paging areas are configured by the CN. The base station side has no terminal equipment context and no RRC connection.

2) Rrc_connected state (CONNECTED state for short): there is an RRC connection and there is a terminal device context at the base station side and the terminal device side. The network side knows that the location of the terminal device is cell specific. Mobility is network-side controlled mobility. Unicast data may be transmitted between the terminal device and the base station.

3) Rrc_inactive state (simply referred to as INACTIVE state): mobility is cell selection reselection based on terminal equipment, connection between CN-NR exists, terminal equipment context exists on a certain base station, paging is triggered by RAN, paging area based on RAN is managed by RAN, network side knows that the position of terminal equipment is based on paging area level of RAN.

BWP

The maximum channel bandwidth in 5G may be 400MHz (i.e., wideband), which is large compared to the maximum channel bandwidth in LTE, 20 MHz. If the terminal device remains operating on a wideband carrier (i.e., maximum channel bandwidth), the power consumption of the terminal device is significant. It is suggested that the radio frequency bandwidth of the terminal device may be adjusted in accordance with the actual throughput of the terminal device, for which purpose the concept of BWP is introduced, the motivation for which is to optimize the power consumption of the terminal device. For example, the terminal device may be configured with a smaller bandwidth (i.e., a BWP with smaller bandwidth) if the terminal device has a very low rate requirement, and may be configured with a larger bandwidth (i.e., a BWP with larger bandwidth) if the terminal device has a very high rate requirement. If the terminal device supports a high rate or operates in a carrier aggregation (Carrier aggregation, CA) mode, the terminal device may be configured with a plurality of BWP. In addition, another purpose of BWP is to trigger coexistence of multiple parameter sets (numerology) in one cell, e.g. BWP1 corresponds to numerology1 and BWP2 corresponds to numerology2.

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

MBMS

MBMS is a technology for transmitting data from one data source to a plurality of terminal equipments through a shared network resource, which can effectively utilize the network resource while providing a multimedia service, and realize broadcasting and multicasting of a multimedia service of a higher rate (e.g., 256 kbps).

Due to the low MBMS spectrum efficiency, it is not sufficient to effectively carry and support the operation of the mobile tv type service. In LTE, 3GPP has therefore explicitly proposed to enhance the support capability for the downlink high speed MBMS service and to determine the design requirements for the physical layer and the air interface.

The 3gpp R9 introduces evolved MBMS (eMBMS) into LTE. eMBMS proposes the concept of a single frequency network (Single Frequency Network, SFN), i.e. a multimedia broadcast multicast service single frequency network (Multimedia Broadcast multicast service Single Frequency Network, MBSFN), wherein the MBSFN uses a unified frequency to simultaneously transmit traffic data in all cells, but synchronization between the cells is guaranteed. The method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the frequency spectrum efficiency can be correspondingly and greatly improved. eMBMS implements broadcast and multicast of services based on IP multicast protocols.

In LTE or 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 terminal devices in an idle state or a connected state.

A single cell point-to-multipoint (Single Cell Point To Multiploint, SC-PTM) concept is introduced in 3gpp r13, SC-PTM being 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) and Single Cell-Multicast Transport Channel. The SC-MCCH and SC-MTCH are mapped onto a Downlink-Shared Channel (DL-SCH), and further, the DL-SCH is mapped onto a physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH), wherein the SC-MCCH and SC-MTCH belong to a logical Channel, the DL-SCH belongs to a transport Channel, and the PDSCH belongs to a physical Channel. The SC-MCCH and SC-MTCH do not support hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) operation.

MBMS introduces a new system information block (System Information Block, SIB) type, SIB20. Specifically, the configuration information of the SC-MCCH is transmitted through the SIB20, and one cell has only one SC-MCCH. The configuration information of the SC-MCCH comprises: the modification period of the SC-MCCH, the repetition period of the SC-MCCH, the radio frame and subframe for scheduling the SC-MCCH and other information. Further, 1) the boundary of the modification period of the SC-MCCH satisfies SFN mod m=0, where SFN represents a system frame number of the boundary, and m is a modification period (i.e., SC-MCCH-modification period) of the SC-MCCH configured in SIB20. 2) The radio frame of the scheduling SC-MCCH meets the following conditions: SFN mod MCCH-repetition period = MCCH-Offset, where SFN represents the system frame number of the radio frame, MCCH-repetition period represents the repetition period of the SC-MCCH, and MCCH-Offset represents the Offset of the SC-MCCH. 3) The subframes of the scheduling SC-MCCH are indicated by SC-MCCH-Subframe.

The SC-MCCH is scheduled through a physical downlink control channel (Physical Downlink Control Channel, PDCCH). In one aspect, a new radio network temporary identity (Radio Network Tempory Identity, RNTI), i.e., single Cell RNTI (SC-RNTI), is introduced to identify a PDCCH (e.g., SC-MCCH PDCCH) for scheduling the SC-MCCH, optionally with the SC-RNTI fixed value FFFC. On the other hand, a new RNTI, i.e., a single cell notification RNTI (Single Cell Notification RNTI, SC-N-RNTI) is introduced to identify a PDCCH (e.g., notification PDCCH) for indicating a change notification of the SC-MCCH, optionally, the SC-N-RNTI is fixed to a value of FFFB; further, the change notification may be indicated with one bit of 8 bits (bits) of DCI 1C. In LTE, the configuration information of SC-PTM is based on the SC-MCCH configured by SIB20, and then SC-MCCH configures SC-MTCH for transmitting service data.

Specifically, the SC-MCCH transmits only one message (i.e., scptm configuration) for configuring configuration information of the SC-PTM. The configuration information of the SC-PTM comprises: temporary mobile Group identity (Temporary Mobile Group Identity, TMGI), session identity (session id), group RNTI (G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information, SC-PTM service information of neighbor cells, and the like. Note that SC-PTM in R13 does not support the robust header compression (Robust Header Compression, ROHC) function.

The downlink discontinuous reception of the SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-scheduling cycle, and SC-MTCH-scheduling offset.

When [ (SFN 10) +subframe number ] module (SC-MTCH-scheduling cycle) =sc-MTCH-scheduling offset is satisfied, a timer ondurationtimerscpm is started;

when receiving downlink PDCCH scheduling, starting a timer drx-InactivityTimerSCPTM;

the downstream SC-PTM service is received only when the timer onduration timerscpm or drx-incaactyitimerscpm is running.

The SC-PTM service continuity adopts the MBMS service continuity concept based on SIB15, namely a mode of SIB15 and MBMSInterestindication. The traffic continuity of the terminal device in idle state is based on the concept of frequency priority.

In the technical solution of the embodiment of the present application, a new SIB (referred to as a first SIB) is defined, where the first SIB includes configuration information of a first MCCH, where the first MCCH is a control channel of an MBMS service, in other words, the first SIB is used to configure configuration information of a control channel of an NR MBMS, alternatively, the control channel of the NR MBMS may also be referred to as an NR MCCH (i.e. the first MCCH).

Further, the first MCCH is used to carry the first signaling, and in the embodiment of the present application, the name of the first signaling is not limited, for example, the first signaling is signaling a, where the first signaling includes configuration information of at least one first MTCH, where the first MTCH is a traffic channel (also referred to as a data channel or a transport channel) of an MBMS service, and the first MTCH is used to transport MBMS service data (such as service data of NR MBMS). In other words, the first MCCH is used to configure configuration information of a traffic channel of the NR MBMS, alternatively, the traffic channel of the NR MBMS may also be called as NR MTCH (i.e., the first MTCH).

Specifically, the first signaling is used for configuring 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, for example, TMGI, session id, and other identification information for identifying the service. Scheduling information corresponding to the service channel, for example, RNTI used when MBMS service data corresponding to the service channel is scheduled, for example, G-RNTI, DRX configuration information, and the like.

The transmissions of the first MCCH and the first MTCH are scheduled based on the PDCCH. The RNTI used for scheduling the PDCCH of the first MCCH uses a unique network identifier, i.e. a fixed value. The RNTI used for scheduling PDCCH use of the first MTCH is configured through the first MCCH.

It should be noted that, in the embodiment of the present application, the naming of the first SIB, the first MCCH and the first MTCH is not limited. For convenience of description, the first SIB may also be simply referred to as SIB, the first MCCH may also be simply referred to as MCCH, and the first MTCH may also be simply referred to as MTCH, and a PDCCH (i.e. MCCH PDCCH) for scheduling the MCCH and a notification PDCCH are configured through SIB, where a PDSCH (i.e. MCCH PDSCH) for transmitting the MCCH is scheduled through DCI carried in MCCH PDCCH. Further, M PDCCHs for scheduling MTCH (i.e., MTCH 1PDCCH, MTCH 2PDCCH, …, MTCH M PDCCH) are configured through the MCCH, wherein DCI carried by MTCH n PDCCH schedules PDSCH for transmitting MTCH n (i.e., MTCH n PDSCH), n being an integer greater than or equal to 1 and less than or equal to M. The MCCH and the MTCH are mapped to the DL-SCH, and further, the DL-SCH is mapped to the PDSCH, wherein the MCCH and the MTCH belong to a logical channel, the DL-SCH belongs to a transport channel, and the PDSCH belongs to a physical channel.

It should be noted that, the MBMS service in the above scheme includes, but is not limited to, a multicast service and a multicast service. The embodiment of the application is described by taking an MBS service as an example, and the description of the "MBS service" may be replaced by a "multicast service" or an "MBMS service".

In NR, a terminal device can receive an MBS service after entering a connection state, and the terminal device needs to receive a unicast service (e.g., an eMBB service) while receiving the MBS service. The terminal device receives service data on only one BWP at the same time, so the terminal device needs to switch between the MBS BWP for receiving the MBS service and the dedicated BWP for receiving the unicast service to ensure simultaneous reception of both types of services. For this reason, the following technical solutions of the embodiments of the present application are proposed.

Fig. 2 is a flow chart of a BWP switching method according to an embodiment of the present application, as shown in fig. 2, where the BWP switching method includes the following steps:

step 201: 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 service, and the second BWP is an MBS BWP for receiving MBS service; alternatively, 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.

In the embodiment of the present application, the concept of MBS BWP is defined, and the MBS BWP is used for the terminal device to receive the MBS service and for the network device to send the MBS service. 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 terminal device dedicated BWP (may also be referred to as UE dedicated BWP) for the terminal device to receive unicast traffic and for the network device to transmit unicast traffic. Here, unicast traffic includes, but is not limited to, eMBB traffic.

In this embodiment of the present application, the terminal device receives second configuration information, where the second configuration information includes configuration information of 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 configures the MBS BWP and at least one UE-specific BWP (abbreviated as a specific BWP) through RRC-specific signaling. The terminal device in the RRC-connected state acquires configuration information of the MBS BWP and configuration information of at least one dedicated BWP through RRC dedicated signaling.

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

In an alternative, the network device configuration also configures MBS services through RRC dedicated signaling. The terminal equipment in the RRC connection state obtains the configuration information of the MBS service, such as the configuration information of the identification (such as TMGI, G-RNTI) of the MBS service, and the like, through the RRC dedicated signaling.

In the embodiment of the present application, the terminal device switches from the first BWP to the second BWP based on the first trigger indication. Here, the implementation of the first BWP and the second BWP is performed by two cases, and in connection with both cases, how the terminal device switches from the first BWP to the second BWP based on the first trigger indication is described below, respectively.

● Case one: the first BWP is a dedicated BWP for receiving a unicast service, and the second BWP is a case of an MBS BWP for receiving an MBS service.

For this case, the terminal device switches from the currently activated dedicated BWP to the MBS BWP, which may be implemented as follows.

Mode one: the terminal equipment starts a first timer; if the first timer expires, 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 duration of the first timer. Further optionally, the first configuration information is carried in RRC dedicated signaling.

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

In an optional manner, the time when the terminal device starts the first timer is the time 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 duration of the first period configured by the network side, and offset is the offset value configured by the network side. The time slot number of the first time slot is configured by the network side.

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

In one example, the terminal device receives configuration information of a first timer configured by the network side through RRC dedicated signaling, the configuration information of the first timer including length configuration information 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 equipment starts the first timer after receiving the configuration information of the first timer;

condition 2: the terminal equipment receives the configuration information of the first timer and also receives the configuration information of the first period and the configuration information of the offset. The moment of starting the first timer is the moment corresponding to the SFN, and the SFN meets the following formula: SFN mod t=offset, where T is the duration of the first timer or the duration of the first period configured by the network side, and offset is the offset value configured by the network side.

Condition 3: the terminal equipment receives the configuration information of the first timer and receives the SFN and/or the time slot number configured by the network side, wherein the moment corresponding to the SFN and/or the time slot number is the absolute time of starting the first timer by the terminal equipment.

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

Mode two: after receiving the first DCI, the terminal device switches from the first BWP to the second BWP; the first DCI carries first indication information, where the first indication information is used to indicate at least one of the following: the identification of MBS BWP, switching the current BWP to MBS BWP.

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

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

In one example, a terminal device listens for DCI corresponding to the terminal device on a UE-specific search space (UE specific Searchspace, USS) on a currently active, specific BWP. 1) The terminal equipment monitors the PDCCH scrambled by the C-RNTI, and acquires first DCI from the PDCCH, wherein first indication information exists in the first DCI and first scheduling information does not exist in the first DCI. The first indication information is used for indicating at least one of the following: the identification of MBS BWP, switching the current BWP to MBS BWP. Or 2) the terminal equipment monitors the PDCCH scrambled by the C-RNTI, and acquires first DCI from the PDCCH, wherein first indication information exists in the first DCI and first scheduling information exists in the first DCI. The first scheduling information is used for scheduling MBS services on MBS BWP. The first indication information is used for indicating at least one of the following: the identification of MBS BWP, switching the current BWP to MBS BWP, the scheduled BWP is MBS BWP.

It should be noted that, the PDCCH in which the first DCI is located may be scrambled not by the C-RNTI but by the G-RNTI, and in this case, the terminal device may also monitor the PDCCH scrambled by the G-RNTI and acquire the first DCI from the PDCCH.

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

● And a second case: 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.

For this case, the terminal device switching from MBS BWP to dedicated BWP may be implemented as follows. 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, where the second indication information is used to indicate at least one of the following: the identification of the target-specific BWP, switching the current BWP to the target-specific BWP.

In the above scheme, the target-dedicated BWP refers to a default active BWP after the terminal device leaves the MBS BWP, and the default active BWP is configured through RRC signaling; alternatively, the target-specific BWP refers to an initial active BWP configured for the terminal device by the network side.

A) In an alternative manner, the PDCCH in which the second DCI is located is scrambled by a C-RNTI.

Further optionally, the second DCI further carries second scheduling information, where the second scheduling information is used to schedule unicast traffic on the target-specific BWP.

B) In an alternative manner, the PDCCH in which the second DCI is located is scrambled by a G-RNTI.

In an example, USS is configured on the MBS BWP, the terminal device MBS BWP may monitor that the C-RNTI scrambles the PDCCH, and obtain a second DCI from the PDCCH, where second indication information exists in the second DCI, where the second indication information is used to indicate at least one of the following: the identification of the target-specific BWP, switching the current BWP to the target-specific BWP. Here, the target-specific BWP configures a default active BWP (i.e., target-specific BWP) after the terminal device leaves the MBS BWP through RRC signaling, for example. Alternatively, the target-specific BWP is an initial active BWP configured on the network side. The terminal device switches to the target-specific 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 unicast traffic on the target-specific BWP.

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

In one example, the terminal device monitors the G-RNTI scrambled PDCCH on the MBS BWP, acquires a second DCI from the PDCCH, wherein second indication information exists in the second DCI, and the second indication information is used for indicating at least one of the following: the identification of the target-specific BWP, switching the current BWP to the target-specific BWP. Here, the target-specific BWP configures a default active BWP (i.e., target-specific BWP) after the terminal device leaves the MBS BWP through RRC signaling, for example. Alternatively, the target-specific BWP is an initial active BWP configured on the network side. The terminal device switches to the target-specific BWP according to the second DCI. Further optionally, the second DCI does not carry scheduling information of the unicast service.

It should be noted that, for the G-RNTI scrambled PDCCH, the second finger information in the PDCCH triggers a group of terminal devices to switch from MBS BWP to respective target specific BWP. The target-specific BWP for each terminal device may be configured through RRC signaling or may be an initial active BWP.

Referring to fig. 3, the terminal device may switch from the dedicated BWP1 (as the terminal device's current active BWP) to the MBS BWP, thereby implementing reception of the MBS PDSCH for carrying the MBS service on the MBS BWP. The terminal device may also switch from the MBS BWP to the dedicated BWP2, so that the unicast service is received on the dedicated BWP2, where the dedicated BWP2 may be a default active BWP after the terminal device in the RRC signaling configuration leaves the MBS BWP, or may be an initial active BWP of the terminal device.

According to the technical scheme, a mechanism for performing BWP switching in the process of receiving MBS service and unicast service by terminal equipment in an NR system is provided, and the BWP switching is performed to ensure that two types of services are received simultaneously, so that interruption of one service caused by the reception of the other service is avoided.

Fig. 4 is a schematic structural diagram of a BWP switching apparatus according to an embodiment of the present application, which is applied to a terminal device, as shown in fig. 4, where the BWP switching apparatus includes:

A switching unit 401 for switching from the first BWP to the second BWP based on the first trigger indication; wherein,

In an alternative, the first BWP is a dedicated BWP for receiving unicast traffic, and the second BWP is an MBS BWP for receiving MBS traffic,

the apparatus further comprises: a starting unit 402 for starting the first timer;

the switching unit 401 is configured to switch from the first BWP to the second BWP if the first timer expires.

In an alternative 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 alternative 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 alternative way, 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 period configured by the network side, and offset is the offset value configured by the network side.

In an alternative manner, the SFN of the first radio frame is configured at the network side.

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

In an alternative, the apparatus further comprises:

a receiving unit 403, configured to receive 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 a duration of the first timer.

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

the apparatus further comprises: a receiving unit 403, configured to receive a 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; the first DCI carries first indication information, where the first indication information is used to indicate at least one of the following: the identification of MBS BWP, switching the current BWP to MBS BWP.

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

and the PDCCH where the first DCI is located is scrambled through the G-RNTI.

In an alternative, 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 comprises: a receiving unit 403, configured to receive a 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, where the second indication information is used to indicate at least one of the following: the identification of the target-specific BWP, switching the current BWP to the target-specific BWP.

In an alternative manner, the target-specific BWP refers to a default active BWP after the terminal device leaves the MBS BWP, and the default active BWP is configured through RRC signaling; or,

the target-specific BWP refers to an initial active BWP configured for the terminal device by the network side.

In an alternative manner, the PDCCH in which the second DCI is located is scrambled by a C-RNTI.

In an alternative manner, the second DCI further carries second scheduling information, where the second scheduling information is used to schedule unicast traffic on the target-specific BWP.

In an alternative manner, the PDCCH in which the second DCI is located is scrambled by a G-RNTI.

In an alternative, the apparatus further comprises:

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

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

It should be understood by those skilled in the art that the above description of the BWP switching device according to the embodiment of the present application may be understood with reference to the description of the BWP switching method according to the embodiment of the present application.

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

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

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into 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, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

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

Optionally, the communication device 500 may be specifically a network device in the embodiment of the present application, and the communication device 500 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 500 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 500 may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 6 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 600 shown in fig. 6 includes a processor 610, and the processor 610 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. 6, the chip 600 may further include a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

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

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

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

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

Fig. 7 is a schematic block diagram of a communication system 700 provided in 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 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may 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 programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, 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.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

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

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

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 apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product 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 perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of bandwidth-part BWP switching, 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 a unicast service, and the second BWP is an MBS BWP for receiving a multimedia multicast service MBS service; or,

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 method of claim 1, wherein the first BWP is a dedicated BWP for receiving unicast traffic, and the second BWP is an MBS BWP for receiving MBS traffic,

the terminal device switches from the first BWP to the second BWP based on the first trigger indication, comprising:

the terminal equipment starts a first timer; if the first timer expires, 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 configuration information of the first timer.
The method of claim 2, wherein the time at which the terminal device starts the first timer is a time corresponding to a first radio frame and/or a first time slot.
The method of claim 4, wherein a system frame number SFN of the first wireless frame satisfies the following equation: SFN mod t=offset, where T is the duration of the first timer or the duration of the first period configured by the network side, and offset is the offset value configured by the network side.
The method of claim 4, wherein the SFN of the first radio frame is network-side configured.
The method according to any of claims 4 to 6, wherein the slot number of the first slot is configured by the network side.
The method of any of claims 2 to 7, wherein the method further comprises:

the terminal equipment receives first configuration information, wherein the first configuration information comprises configuration information of the first timer, and the configuration information of the first timer is used for determining duration of the first timer.
The method of claim 8, wherein the first configuration information is carried in radio resource control, RRC, dedicated signaling.
The method of claim 1, wherein the first BWP is a dedicated BWP for receiving unicast traffic, and the second BWP is an MBS BWP for receiving MBS traffic,

the terminal device switches from the first BWP to the second BWP based on the first trigger indication, comprising:

after receiving the first downlink control information DCI, the terminal equipment switches from the first BWP to the second BWP; the first DCI carries first indication information, where the first indication information is used to indicate at least one of the following: the identification of MBS BWP, switching the current BWP to MBS BWP.
The method of claim 10, wherein the first DCI further carries first scheduling information for scheduling MBS traffic on an MBS BWP, and the first indication information is further for indicating that the scheduled BWP is an MBS BWP.
The method according to claim 10 or 11, wherein,

scrambling a physical downlink control channel PDCCH where the first DCI is located through a cell radio network temporary identifier C-RNTI; or,

and the PDCCH where the first DCI is located is scrambled through a group radio network temporary identifier G-RNTI.
The method of claim 1, wherein 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 terminal device switches from the first BWP to the second BWP based on the first trigger indication, comprising:

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, where the second indication information is used to indicate at least one of the following: the identification of the target-specific BWP, switching the current BWP to the target-specific BWP.
The method of claim 13, wherein,

the target-specific BWP refers to a default active BWP configured through RRC signaling after the terminal device leaves the MBS BWP; or,

the target-specific BWP refers to an initial active BWP configured for the terminal device by the network side.
The method of claim 13 or 14, wherein the PDCCH in which the second DCI is located is scrambled by a C-RNTI.
The method of claim 15, wherein the second DCI further carries second scheduling information for scheduling unicast traffic on the target-specific BWP.
The method of claim 13 or 14, wherein the PDCCH in which the second DCI is located is scrambled by a G-RNTI.
The method of any one of claims 1 to 17, wherein the method further comprises:

the terminal device receives second configuration information including configuration information of 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.
A BWP switching apparatus applied to a terminal device, the apparatus comprising:

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

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

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 of claim 20, wherein the first BWP is a dedicated BWP for receiving unicast traffic, and the second BWP is an MBS BWP for receiving MBS traffic,

the apparatus further comprises: the starting unit is used for starting the first timer;

The switching unit is configured to switch from the first BWP to the second BWP if the first timer expires.
The apparatus of claim 21, wherein the means for initiating initiates the first timer in response to the terminal device receiving configuration information for the first timer.
The apparatus of claim 21, wherein the time at which the starting unit starts the first timer is a time corresponding to a first radio frame and/or a first time slot.
The apparatus of claim 23, wherein the SFN of the first radio frame satisfies the following equation: SFN mod t=offset, where T is the duration of the first timer or the duration of the first period configured by the network side, and offset is the offset value configured by the network side.
The apparatus of claim 23, wherein the SFN of the first radio frame is network-side configured.
The apparatus of claim 24 or 25, wherein a slot number of the first slot is configured by a network side.
The apparatus of any one of claims 21 to 26, wherein the apparatus further comprises:

the receiving unit is used for receiving first configuration information, wherein the first configuration information comprises configuration information of the first timer, and the configuration information of the first timer is used for determining duration of the first timer.
The apparatus of claim 27, wherein the first configuration information is carried in RRC dedicated signaling.
The apparatus of claim 20, wherein the first BWP is a dedicated BWP for receiving unicast traffic, and the second BWP is an MBS BWP for receiving MBS traffic,

the apparatus further comprises: a receiving unit configured to receive a 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; the first DCI carries first indication information, where the first indication information is used to indicate at least one of the following: the identification of MBS BWP, switching the current BWP to MBS BWP.
The apparatus of claim 29, wherein the first DCI further carries first scheduling information for scheduling MBS traffic on MBS BWP, and the first indication information is further for indicating that the scheduled BWP is MBS BWP.
The apparatus of claim 29 or 30, wherein,

the PDCCH where the first DCI is located is scrambled through a C-RNTI; or,

and the PDCCH where the first DCI is located is scrambled through the G-RNTI.
The apparatus of claim 20, wherein 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 comprises: a receiving unit configured to receive a 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, where the second indication information is used to indicate at least one of the following: the identification of the target-specific BWP, switching the current BWP to the target-specific BWP.
The apparatus of claim 32, wherein,

the target-specific BWP refers to a default active BWP configured through RRC signaling after the terminal device leaves the MBS BWP; or,

the target-specific BWP refers to an initial active BWP configured for the terminal device by the network side.
The apparatus of claim 32 or 33, wherein the PDCCH in which the second DCI is located is scrambled by a C-RNTI.
The apparatus of claim 34, wherein the second DCI further carries second scheduling information for scheduling unicast traffic on the target-specific BWP.
The apparatus of claim 32 or 33, wherein the PDCCH in which the second DCI is located is scrambled by a G-RNTI.
The apparatus of any one of claims 20 to 36, wherein the apparatus further comprises:

And a receiving unit for receiving second configuration information including 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 for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 19.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 19.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 19.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 19.
A computer program which causes a computer to perform the method of any one of claims 1 to 19.