A cell reselection method and device, terminal equipment, and network equipment

Abstract

An embodiment of the present application provides a cell reselection method and apparatus, a terminal device, and a network device, the method comprising: the terminal device receives first configuration information sent by a serving cell, the first configuration information being used to determine at least one of the following: MBMS service deployment information of an adjacent frequency, MBMS service deployment information of a neighboring area, the bandwidth of an initial BWP of a neighboring area, the subcarrier spacing of an initial BWP of a neighboring area, the bandwidth of an MBMS BWP of a neighboring area, and the subcarrier spacing of an MBMS BWP of a neighboring area; the terminal device determines a target cell for cell reselection based on the first configuration information.

Description

[0001] This application is a divisional application based on the Chinese application with application number 2020800904211 and invention name “A cell reselection method and device, terminal equipment, and network equipment”. Technical Field

[0002] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a cell reselection method and apparatus, terminal equipment, and network equipment. Background Art

[0003] Multimedia Broadcast Multicast Service (MBMS) is a technology that transmits data from one data source to multiple users by sharing network resources. This technology can effectively utilize network resources while providing multimedia services, and realize broadcast and multicast of multimedia services at a higher rate (such as 256kbps).

[0004] In the New Radio (NR) system, many scenarios need to support multicast and broadcast service requirements, such as the Internet of Vehicles and the Industrial Internet. Therefore, it is necessary to introduce MBMS in NR. When receiving MBMS services, the terminal device may reselect the cell, which will cause the reception of MBMS services to be interrupted and the user experience to be poor. Summary of the invention

[0005] The embodiments of the present application provide a cell reselection method and apparatus, terminal equipment, and network equipment.

[0006] The cell reselection method provided in the embodiment of the present application includes:

[0007] The terminal device receives first configuration information sent by the serving cell, where the first configuration information is used to determine at least one of the following: MBMS service deployment information of an adjacent frequency, MBMS service deployment information of a neighboring area, a bandwidth of an initial bandwidth part (BandWidth Part, BWP) of a neighboring area, a subcarrier spacing of an initial BWP of a neighboring area, a bandwidth of an MBMS BWP of a neighboring area, and a subcarrier spacing of an MBMS BWP of a neighboring area;

[0008] The terminal device determines a target cell for cell reselection based on the first configuration information.

[0009] The cell reselection method provided in the embodiment of the present application includes:

[0010] The serving cell sends first configuration information to the terminal device, and the first configuration information is used to determine at least one of the following: MBMS service deployment information of the adjacent frequency, MBMS service deployment information of the neighboring area, the bandwidth of the initial BWP of the neighboring area, the subcarrier spacing of the initial BWP of the neighboring area, the bandwidth of the MBMS BWP of the neighboring area, and the subcarrier spacing of the MBMS BWP of the neighboring area.

[0011] The cell reselection device provided in the embodiment of the present application is applied to a terminal device, and the device includes:

[0012] A receiving unit, configured to receive first configuration information sent by a serving cell, wherein the first configuration information is used to determine at least one of the following: MBMS service deployment information of an adjacent frequency, MBMS service deployment information of a neighboring cell, a bandwidth of an initial BWP of a neighboring cell, a subcarrier spacing of an initial BWP of a neighboring cell, a bandwidth of an MBMS BWP of a neighboring cell, and a subcarrier spacing of an MBMS BWP of a neighboring cell;

[0013] A determination unit is used to determine a target cell for cell reselection based on the first configuration information.

[0014] The cell reselection device provided in the embodiment of the present application is applied to a network device, and the device includes:

[0015] A sending unit is used to send first configuration information to a terminal device, wherein the first configuration information is used to determine at least one of the following: MBMS service deployment information of an adjacent frequency, MBMS service deployment information of a neighboring area, the bandwidth of an initial BWP of a neighboring area, the subcarrier spacing of an initial BWP of a neighboring area, the bandwidth of an MBMS BWP of a neighboring area, and the subcarrier spacing of an MBMS BWP of a neighboring area.

[0016] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned cell reselection method.

[0017] The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned cell reselection method.

[0018] The chip provided in the embodiment of the present application is used to implement the above-mentioned cell reselection method.

[0019] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned cell reselection method.

[0020] The computer-readable storage medium provided in the embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned cell reselection method.

[0021] The computer program product provided in the embodiment of the present application includes computer program instructions, which enable a computer to execute the above-mentioned cell reselection method.

[0022] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned cell reselection method.

[0023] Through the above technical solution, the serving cell broadcasts the MBMS service deployment information of the adjacent frequency and / or adjacent area and the information related to BWP. The terminal device can select the cell where the MBMS service is deployed and supported by its own capabilities as the target cell for cell reselection, thereby realizing the continuous reception of MBMS services supported by the NR system and ensuring the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0026] Figure 2 A schematic diagram of beam sweeping provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of SSB provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of an SSB burst set cycle provided in an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of a first SIB related configuration provided in an embodiment of the present application;

[0030] Figure 6 It is a schematic diagram of a PTM configuration transmission mechanism provided in an embodiment of the present application;

[0031] Figure 7 It is the PTM channel and its mapping diagram provided by the embodiment of the present application;

[0032] Figure 8 A schematic diagram of a cell reselection method according to an embodiment of the present application;

[0033] Fig. 9Schematic diagram of the structure of the cell reselection device provided in the embodiment of the present application Figure 1 ;

[0034] Fig.10 Schematic diagram of the structure of the cell reselection device provided in the embodiment of the present application Figure 2 ;

[0035] Fig.11 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0036] Fig.12 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0037] Fig.13 It is a schematic block diagram of a communication system provided in an embodiment of the present application. Specific embodiments

[0038] The following will describe the technical solutions in the embodiments of the present application in conjunction with the 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 ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0040] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may 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, etc.

[0041] The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110. As used herein, "terminal" includes but is not limited to connecting via a wired line, such as via a Public Switched Telephone Networks (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, a 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 another terminal configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via 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 radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal may refer to an access terminal, User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0042] Optionally, the terminals 120 may perform device-to-device (D2D) communication.

[0043] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0044] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area, which is not limited in the embodiments of the present application.

[0045] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0046] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0047] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0049] As people pursue higher speed, latency, high-speed mobility, energy efficiency, and the diversity and complexity of services in future life, the 3rd Generation Partnership Project (3GPP) international standard organization has begun to develop 5G. The main application scenarios of 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0050] On the one hand, eMBB still aims at users to obtain 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 indoors, in urban areas, and in rural areas, its capabilities and requirements vary greatly, 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, remote medical operations (surgery), traffic safety, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of modules, etc.

[0051] In the early days of NR deployment, complete NR coverage was difficult to obtain, so the typical network coverage was wide-area LTE coverage and NR island coverage. In addition, a large number of LTEs are deployed below 6GHz, and there is little spectrum below 6GHz available for 5G. Therefore, NR must study spectrum applications above 6GHz, but high-frequency bands have limited coverage and fast signal fading. At the same time, in order to protect mobile operators' early investments in LTE, a tight interworking working mode between LTE and NR was proposed.

[0052] RRC Status

[0053] In order to reduce air interface signaling and quickly restore wireless connections and data services, 5G defines a new Radio Resource Control (RRC) state, namely the RRC inactive (RRC_INACTIVE) state. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state.

[0054] 1) RRC_IDLE state (abbreviated as idle state): Mobility is based on UE cell selection and reselection, paging is initiated by the core network (CN), and the paging area is configured by the CN. There is no UE context on the base station side and no RRC connection.

[0055] 2) RRC_CONNECTED state (referred to as connected state): There is an RRC connection, and UE context exists on the base station side and the UE side. The network side knows the location of the UE at the specific cell level. Mobility is mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.

[0056] 3) RRC_INACTIVE state (abbreviated as inactive state): Mobility is based on UE cell selection and reselection, there is a connection between CN and NR, the UE context exists on a certain base station, paging is triggered by RAN, and the RAN-based paging area is managed by RAN. The network side knows the UE location based on the RAN paging area level.

[0057] Beam sweeping

[0058] NR will be deployed at high frequencies in the future. In order to improve coverage, in 5G, the beam sweeping mechanism is introduced to meet the coverage requirements (exchange space for coverage, and exchange time for space). Figure 2 After the introduction of beam sweeping, synchronization signals need to be sent in each beam direction. The 5G synchronization signal is given in the form of a synchronization signal block (SS / PBCH block, SSB), including the primary synchronization signal (Primary Synchronisation Signal, PSS), the secondary synchronization signal (Secondary Synchronisation Signal, SSS), and the physical broadcast channel (Physical Broadcast Channel, PBCH), as shown in Figure 3 The 5G synchronization signal appears periodically in the time domain in the form of a synchronization signal burst set (SS burst set), as shown in Figure 4 shown.

[0059] The actual number of beams transmitted by each cell is determined by the network configuration, but the frequency of the cell determines the maximum number of beams that can be configured, as shown in Table 1 below.

[0060] Frequency range L (maximum number of beams) up to 3(2.4)GHz 4 3(2.4)GHz—6GHz 8 6GHz—52.6GHz 64

[0061] Table 1

[0062] Bandwidth Part (BWP)

[0063] The maximum channel bandwidth in 5G can be 400MHz (i.e., broadband), which is much larger than the maximum channel bandwidth of 20MHz in LTE. If the UE keeps working on the broadband carrier (i.e., the maximum channel bandwidth), the power consumption of the UE is very large. Therefore, it is recommended that the RF bandwidth of the UE can be adjusted according to the actual throughput of the UE. For this purpose, the concept of BWP is introduced. The motivation for introducing BWP is to optimize the power consumption of the UE. For example, if the rate requirement of the UE is very low, a smaller bandwidth (i.e., a smaller BWP) can be configured for the UE. If the rate requirement of the UE is very high, a larger bandwidth (i.e., a larger BWP) can be configured for the UE. If the UE supports high rates or operates in carrier aggregation (CA) mode, multiple BWPs can be configured for the UE. In addition, another purpose of BWP is to trigger the coexistence of multiple parameter sets (numerology) in a cell, such as BWP1 corresponding to numerology1 and BWP2 corresponding to numerology2.

[0064] An idle or inactive UE resides on the initial BWP. The initial BWP is visible to the idle or inactive UE. The UE can obtain information such as the master information block (MIB), remaining minimum system information (RMSI), other system information (OSI) and paging on the initial BWP.

[0065] MBMS

[0066] MBMS was introduced in 3GPP Release 6 (R6). MBMS is a technology that transmits data from one data source to multiple UEs by sharing network resources. While providing multimedia services, this technology can effectively utilize network resources and achieve broadcast and multicast of multimedia services at a higher rate (such as 256kbps).

[0067] Since the MBMS spectrum efficiency in 3GPP R6 is low and insufficient to effectively carry and support the operation of mobile TV services, 3GPP has clearly proposed to enhance the support capability for downlink high-speed MBMS services in LTE, and has determined the design requirements for the physical layer and air interface.

[0068] 3GPP R9 introduced evolved MBMS (eMBMS) into LTE. eMBMS proposed the concept of Single Frequency Network (SFN), namely Multimedia Broadcast multicast service Single Frequency Network (MBSFN). MBSFN uses a unified frequency to send service data in all cells at the same time, but synchronization between cells must be guaranteed. This method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the spectrum efficiency will also be greatly improved accordingly. eMBMS implements broadcast and multicast of services based on the IP multicast protocol.

[0069] In LTE or enhanced LTE (LTE-Advanced, LTE-A), MBMS has only a broadcast bearer mode, but no multicast bearer mode. In addition, the reception of MBMS services is applicable to UEs in an idle state or a connected state.

[0070] 3GPP R13 introduced the concept of Single Cell Point To Multipoint (SC-PTM), which is based on the MBMS network architecture.

[0071] 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 (DL-SCH), and further, DL-SCH is mapped to Physical Downlink Shared Channel (PDSCH), where SC-MCCH and SC-MTCH are logical channels, DL-SCH is a transport channel, and PDSCH is a physical channel. SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operation.

[0072] MBMS introduces a new type of System Information Block (SIB), namely SIB20. Specifically, the configuration information of SC-MCCH is transmitted through SIB20, and there is only one SC-MCCH in a cell. The configuration information of SC-MCCH includes: the modification period of SC-MCCH, the repetition period of SC-MCCH, and the radio frame and subframe for scheduling SC-MCCH. 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 (i.e., 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 the offset of SC-MCCH. 3) The subframe for scheduling SC-MCCH is indicated by sc-mcch-Subframe.

[0073] SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH). On the one hand, a new Radio Network Temporary Identity (RNTI), namely the Single Cell RNTI (SC-RNTI), is introduced to identify the PDCCH (such as SC-MCCHPDCCH) used to schedule SC-MCCH. Optionally, the SC-RNTI is fixed to FFFC. On the other hand, a new RNTI, namely the Single Cell Notification RNTI (SC-N-RNTI), is introduced to identify the PDCCH (such as the notification PDCCH) used to indicate the change notification of SC-MCCH. Optionally, the SC-N-RNTI is fixed to FFFB; further, one of the 8 bits of DCI 1C can be used to indicate the change notification. In LTE, the configuration information of SC-PTM is based on the SC-MCCH configured by SIB20, and then the SC-MCCH configures the SC-MTCH, which is used to transmit service data.

[0074] Specifically, SC-MCCH only transmits one message (i.e., SCPTMConfiguration), which is used to configure the configuration information of SC-PTM. The configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session id, group RNTI (G-RNTI), discontinuous reception (DRX) configuration information, and SC-PTM service information of neighboring cells. It should be noted that SC-PTM in R13 does not support the robust header compression (ROHC) function.

[0075] The downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

[0076] When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, the timer onDurationTimerSCPTM is started;

[0077] When receiving downlink PDCCH scheduling, start the timer drx-InactivityTimerSCPTM;

[0078] Downlink SC-PTM services are received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

[0079] SC-PTM service continuity adopts the MBMS service continuity concept based on SIB15, namely "SIB15+MBMSInterestIndication". The service continuity of idle UE is based on the concept of frequency priority.

[0080] In NR, many scenarios need to support multicast and broadcast service requirements, such as in the Internet of Vehicles and the Industrial Internet. Therefore, it is necessary to introduce MBMS in NR. When the terminal device receives the MBMS service, cell reselection may occur. In NR, since the bandwidth support capability of the terminal device is limited, if the terminal device does not support the bandwidth of the initial BWP (initial BWP) of the target cell, the terminal device considers the target cell to be barred. For this reason, the network side needs to assist the terminal device in cell reselection to ensure the continuous reception of the MBMS service. Based on this, the following technical solutions of the embodiments of the present application are proposed. The MBMS services in the embodiments of the present application include but are not limited to multicast services and multicast services.

[0081] In the technical solution of the embodiment of the present application, a new SIB (called the first SIB) is defined, referring to Figure 5 The first SIB includes configuration information of the first MCCH. Here, the first MCCH is the control channel of the MBMS service. In other words, the first SIB is used to configure configuration information of the control channel of the NR MBMS. Optionally, the control channel of the NR MBMS can also be called NR MCCH (ie, the first MCCH).

[0082] Further, the first MCCH is used to carry the first signaling. The embodiment of the present application does not limit the name of the first signaling. For example, the first signaling is signaling A. The first signaling includes configuration information of 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. The first MTCH is used to transmit MBMS service data (such as service data of NR MBMS). In other words, the first MCCH is used to configure the configuration information of the service channel of NR MBMS. Optionally, the service channel of NR MBMS can also be called NR MTCH (i.e., the first MTCH).

[0083] Specifically, the first signaling is used to configure the service channel of NR MBMS, the service information corresponding to the service channel, and the scheduling information corresponding to the service channel. Further, optionally, the service information corresponding to the service channel, such as identification information of the service such as TMGI and session id. The scheduling information corresponding to the service channel, such as the RNTI used when the MBMS service data corresponding to the service channel is scheduled, such as G-RNTI, DRX configuration information, etc.

[0084] It should be noted that the transmission of the first MCCH and the first MTCH are both based on PDCCH scheduling. The RNTI used by the PDCCH for scheduling 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.

[0085] It should be noted that the embodiments of the present application do not limit the naming of the first SIB, the first MCCH, and the first MTCH. For ease of description, the first SIB may also be referred to as SIB, the first MCCH may also be referred to as MCCH, and the first MTCH may also be referred to as MTCH. Figure 6 , a PDCCH for scheduling MCCH (i.e., MCCH PDCCH) and a notification PDCCH are configured through SIB, wherein the DCI carried by MCCH PDCCH schedules the PDSCH for transmitting MCCH (i.e., MCCH PDSCH). Further, M PDCCHs for scheduling MTCH (i.e., MTCH 1 PDCCH, MTCH 2 PDCCH, ..., MTCH M PDCCH) are configured through MCCH, wherein the DCI carried by MTCH n PDCCH schedules the PDSCH for transmitting MTCH n (i.e., MTCH n PDSCH), where n is an integer greater than or equal to 1 and less than or equal to M. Refer to Figure 7 , MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, where MCCH and MTCH belong to logical channels, DL-SCH belongs to transport channels, and PDSCH belongs to physical channels.

[0086] Figure 8 A schematic diagram of a cell reselection method provided in an embodiment of the present application is shown in FIG. Figure 8 As shown, the cell reselection method comprises the following steps:

[0087] Step 801: The terminal device receives first configuration information sent by the serving cell, wherein the first configuration information is used to determine at least one of the following: MBMS service deployment information of the adjacent frequency, MBMS service deployment information of the neighboring area, the bandwidth of the initial BWP of the neighboring area, the subcarrier spacing of the initial BWP of the neighboring area, the bandwidth of the MBMS BWP of the neighboring area, and the subcarrier spacing of the MBMS BWP of the neighboring area.

[0088] In an embodiment of the present application, a serving cell sends first configuration information to a terminal device, and the terminal device receives the first configuration information sent by the serving cell. Here, the serving cell refers to the current serving cell of the terminal device. Further, optionally, the current serving cell of the terminal device sends the first configuration information by broadcasting. For example: the first configuration information is carried in the SIB or in the MBMS signaling. Here, the SIB message is, for example, the first SIB in the above scheme, and the MBMS signaling is, for example, the first MTCH in the above scheme.

[0089] In an embodiment of the present application, the first configuration information is used to determine at least one of the following: MBMS service deployment information of adjacent frequencies, MBMS service deployment information of neighboring cells, bandwidth of the initial BWP of the neighboring cells, subcarrier spacing of the initial BWP of the neighboring cells, bandwidth of the MBMS BWP of the neighboring cells, and subcarrier spacing of the MBMS BWP of the neighboring cells.

[0090] Further, optionally, the first configuration information is also used to determine at least one of the following: MBMS service deployment information of the frequency layer of the current cell, MBMS service deployment information of the current cell, the bandwidth of the initial BWP of the current cell, the subcarrier spacing of the current cell, the bandwidth of the MBMS BWP of the current cell, and the subcarrier spacing of the MBMS BWP of the current cell.

[0091] It should be noted that the bandwidth of the initial BWP of a cell refers to the bandwidth indicated by the locationAndBandwidth broadcast in the SIB1 of the cell. The subcarrier spacing (SCS) of the initial BWP of a cell refers to the subcarrier spacing indicated in the MIB or the subcarrier spacing of the initial BWP configured in the SIB1.

[0092] It should be noted that an MBMS BWP of a cell refers to a BWP configured in the cell specifically for transmitting MBMS services.

[0093] In an optional implementation manner, the adjacent frequency MBMS service deployment information includes:

[0094] MBMS service deployment information of at least one frequency layer, wherein each of the at least one frequency layer belongs to an adjacent frequency of the serving cell; or, one of the at least one frequency layer is the frequency layer where the serving cell is located, and the other frequency layers belong to the adjacent frequencies of the serving cell.

[0095] In an optional implementation manner, the MBMS service deployment information of the neighboring cell includes:

[0096] MBMS service deployment information of each cell of at least one frequency layer, wherein each of the at least one frequency layer belongs to an adjacent frequency of the serving cell; or, one of the at least one frequency layer is the frequency layer where the serving cell is located, and the other frequency layers belong to the adjacent frequencies of the serving cell; each of the individual cells belongs to a neighboring area of ​​the serving cell.

[0097] In an optional implementation manner, the bandwidth of the initial BWP of the neighboring cell includes:

[0098] The bandwidth of the initial BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to the adjacent frequency of the serving cell; or, one frequency layer in the at least one frequency layer is the frequency layer where the serving cell is located, and the other frequency layers belong to the adjacent frequency of the serving cell; each of the individual cells belongs to the adjacent area of ​​the serving cell.

[0099] In an optional implementation manner, the subcarrier spacing of the initial BWP of the neighboring cell refers to:

[0100] The subcarrier spacing of the initial BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to the adjacent frequency of the serving cell; or, one frequency layer in the at least one frequency layer is the frequency layer where the serving cell is located, and the other frequency layers belong to the adjacent frequency of the serving cell; each of the individual cells belongs to the adjacent cell of the serving cell.

[0101] In an optional implementation manner, the bandwidth of the MBMS BWP of the neighboring cell refers to:

[0102] The bandwidth of the MBMS BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of the serving cell; or, one frequency layer in the at least one frequency layer is the frequency layer where the serving cell is located, and the other frequency layers belong to the adjacent frequencies of the serving cell; each of the individual cells belongs to a neighboring area of ​​the serving cell.

[0103] In an optional implementation manner, the subcarrier spacing of the MBMS BWP of the neighboring cell refers to:

[0104] The subcarrier spacing of the MBMS BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of the serving cell; or, one frequency layer in the at least one frequency layer is the frequency layer where the serving cell is located, and the other frequency layers belong to the adjacent frequencies of the serving cell; each of the individual cells belongs to a neighboring cell of the serving cell.

[0105] Step 802: The terminal device determines a target cell for cell reselection based on the first configuration information.

[0106] In an optional implementation manner, the MBMS service being performed by the terminal device is a first MBMS service provided by the serving cell;

[0107] 1) The terminal device determines, based on the first configuration information, a target frequency layer in which the first MBMS service is deployed; 2) For each cell in the target adjacent frequency layer, if the terminal device supports at least one of the bandwidth of the initial BWP of the cell, the subcarrier spacing of the initial BWP, the bandwidth of the MBMS BWP, and the subcarrier spacing of the MBMS BWP, the terminal device determines that the cell is in the cell reselection candidate list; or, if the terminal device does not support at least one of the bandwidth of the initial BWP of the cell, the subcarrier spacing of the initial BWP, the bandwidth of the MBMS BWP, and the subcarrier spacing of the MBMS BWP, the terminal device determines that the cell is not in the cell reselection candidate list; 3) The terminal device selects a target cell for cell reselection from the cell reselection candidate list.

[0108] In a specific implementation, the terminal device selects a target cell for cell reselection from the cell reselection candidate list based on the cell signal quality and / or the number of preferred beams.

[0109] For example: when a terminal device resides in the current service cell and receives MBMS service, it also receives SIB or MBMS signaling broadcast by the current service cell, and the SIB or MBMS signaling contains the first configuration information. The terminal device believes that the frequency layer with the MBMS service currently being carried out by the terminal device has the highest priority, and uses the frequency layer with the MBMS service currently being carried out as the target frequency layer. Then, the terminal device determines whether to support the bandwidth of the initial BWP and / or the subcarrier spacing of the initial BWP and / or the bandwidth of the MBMS BWP and / or the subcarrier spacing of the MBMS BWP of a certain cell (the cell belongs to the target frequency layer) on the target frequency layer according to its own bandwidth capability. If not supported, the terminal device considers that the cell reselection priority of the cell is the lowest and excludes the cell from the cell reselection candidate list. If supported, and the cell has the MBMS service being carried out by the terminal device, the terminal device considers that the cell is in the cell reselection candidate list. Finally, the terminal device further determines the target cell for cell reselection based on the cell signal quality and / or the number of high-quality beams.

[0110] In an embodiment of the present application, the MBMS service deployment information in the above scheme includes identification information of each MBMS service in at least one deployed MBMS service. For example: the MBMS service deployment information of cell 1 includes a list of identification information of MBMS services deployed (i.e., existing) on ​​the cell 1. Among them, cell 1 can refer to a service cell or a neighboring cell. Similarly, the MBMS service deployment information of the frequency layer can also include a list of identification information of MBMS services deployed (i.e., existing) on ​​the frequency layer.

[0111] Further, optionally, the identification information of the MBMS service includes at least one of the following: TMGI, session identifier, MBMS service area identifier (MBMS Service Area Identities, MBMS SAI).

[0112] According to the technical solution of the embodiment of the present application, the serving cell broadcasts the MBMS service deployment information of the adjacent frequency and / or the adjacent area and the information related to the BWP. The terminal device can select the cell where the MBMS service is deployed and supported by its own capabilities as the target cell for cell reselection, thereby realizing the continuous reception of the MBMS service supported by the NR system and ensuring the user experience.

[0113] Fig. 9 Schematic diagram of the structure of the cell reselection device provided in the embodiment of the present application Figure 1 , applied to terminal devices, such as Fig. 9 As shown, the cell reselection device includes:

[0114] The receiving unit 901 is used to receive first configuration information sent by the serving cell, where the first configuration information is used to determine at least one of the following: MBMS service deployment information of the adjacent frequency, MBMS service deployment information of the neighboring area, bandwidth of the initial BWP of the neighboring area, subcarrier spacing of the initial BWP of the neighboring area, bandwidth of the MBMS BWP of the neighboring area, and subcarrier spacing of the MBMS BWP of the neighboring area;

[0115] The determination unit 902 is used to determine a target cell for cell reselection based on the first configuration information.

[0116] In an optional implementation manner, the first configuration information is carried in SIB or MBMS signaling.

[0117] In an optional implementation manner, the adjacent frequency MBMS service deployment information includes:

[0118] MBMS service deployment information of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell.

[0119] In an optional implementation manner, the MBMS service deployment information of the neighboring cell includes:

[0120] MBMS service deployment information of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the each cell belongs to an adjacent cell of the serving cell.

[0121] In an optional implementation manner, the bandwidth of the initial BWP of the neighboring cell includes:

[0122] The bandwidth of the initial BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell in the individual cells belongs to a neighboring cell of the serving cell.

[0123] In an optional implementation manner, the subcarrier spacing of the initial BWP of the neighboring cell refers to:

[0124] The subcarrier spacing of the initial BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell in the individual cells belongs to a neighboring cell of the serving cell.

[0125] In an optional implementation manner, the bandwidth of the MBMS BWP of the neighboring cell refers to:

[0126] The bandwidth of the MBMS BWP of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the individual cells belongs to an adjacent cell of the serving cell.

[0127] In an optional implementation manner, the subcarrier spacing of the MBMS BWP of the neighboring cell refers to:

[0128] The subcarrier spacing of the MBMS BWP of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the individual cells belongs to a neighboring cell of the serving cell.

[0129] In an optional implementation manner, the MBMS service being performed by the terminal device is a first MBMS service provided by the serving cell;

[0130] The determination unit 902 is used to determine, based on the first configuration information, a target frequency layer in which the first MBMS service is deployed; for each cell in the target adjacent frequency layer, if the terminal device supports at least one of the bandwidth of the initial BWP of the cell, the subcarrier spacing of the initial BWP, the bandwidth of the MBMS BWP, and the subcarrier spacing of the MBMS BWP, then determine that the cell is in the cell reselection candidate list; if the terminal device does not support at least one of the bandwidth of the initial BWP of the cell, the subcarrier spacing of the initial BWP, the bandwidth of the MBMS BWP, and the subcarrier spacing of the MBMS BWP, then determine that the cell is not in the cell reselection candidate list; and select a target cell for cell reselection from the cell reselection candidate list.

[0131] In an optional implementation, the determining unit 902 is configured to select a target cell for cell reselection from the cell reselection candidate list based on cell signal quality and / or the number of preferred beams.

[0132] In an optional implementation manner, the MBMS service deployment information includes: identification information of each MBMS service in at least one deployed MBMS service.

[0133] In an optional implementation manner, the identification information of the MBMS service includes at least one of the following: TMGI, session identification, and MBMS service area identification.

[0134] Those skilled in the art should understand that the relevant description of the above-mentioned cell reselection device in the embodiment of the present application can be understood by referring to the relevant description of the cell reselection method in the embodiment of the present application.

[0135] Fig.10 Schematic diagram of the structure of the cell reselection device provided in the embodiment of the present application Figure 2 , applied to network equipment, such as Fig.10 As shown, the cell reselection device includes:

[0136] The sending unit 1001 is used to send first configuration information to the terminal device, where the first configuration information is used to determine at least one of the following: MBMS service deployment information of the adjacent frequency, MBMS service deployment information of the neighboring area, the bandwidth of the initial BWP of the neighboring area, the subcarrier spacing of the initial BWP of the neighboring area, the bandwidth of the MBMS BWP of the neighboring area, and the subcarrier spacing of the MBMS BWP of the neighboring area.

[0137] In an optional implementation manner, the first configuration information is carried in a SIB message or in MBMS signaling.

[0138] In an optional implementation manner, the adjacent frequency MBMS service deployment information includes:

[0139] MBMS service deployment information of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of a serving cell.

[0140] In an optional implementation manner, the MBMS service deployment information of the neighboring cell includes:

[0141] MBMS service deployment information of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of a serving cell, and each cell of the each cell belongs to an adjacent cell of the serving cell.

[0142] In an optional implementation manner, the bandwidth of the initial BWP of the neighboring cell includes:

[0143] The bandwidth of the initial BWP of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the individual cells belongs to a neighboring cell of the serving cell.

[0144] In an optional implementation manner, the subcarrier spacing of the initial BWP of the neighboring cell refers to:

[0145] The subcarrier spacing of the initial BWP of each cell of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell in the individual cells belongs to a neighboring cell of the serving cell.

[0146] In an optional implementation manner, the bandwidth of the MBMS BWP of the neighboring cell refers to:

[0147] The bandwidth of the MBMS BWP of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of a serving cell, and each cell of the individual cells belongs to an adjacent cell of the serving cell.

[0148] In an optional implementation manner, the subcarrier spacing of the MBMS BWP of the neighboring cell refers to:

[0149] The subcarrier spacing of the MBMS BWP of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the individual cells belongs to an adjacent cell of the serving cell.

[0150] In an optional implementation manner, the MBMS service deployment information includes: identification information of each MBMS service in at least one deployed MBMS service.

[0151] In an optional implementation manner, the identification information of the MBMS service includes at least one of the following: TMGI, session identification, and MBMS service area identification.

[0152] Those skilled in the art should understand that the relevant description of the above-mentioned cell reselection device in the embodiment of the present application can be understood by referring to the relevant description of the cell reselection method in the embodiment of the present application.

[0153] Fig.11 1 is a schematic structural diagram of a communication device 1100 provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Fig.11 The communication device 1100 shown includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0154] Alternatively, if Fig.11 As shown, the communication device 1100 may further include a memory 1120. The processor 1110 may call and run a computer program from the memory 1120 to implement the method in the embodiment of the present application.

[0155] The memory 1120 may be a separate device independent of the processor 1110 , or may be integrated into the processor 1110 .

[0156] Alternatively, if Fig.11 As shown, the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0157] The transceiver 1130 may include a transmitter and a receiver. The transceiver 1130 may further include an antenna, and the number of the antennas may be one or more.

[0158] Optionally, the communication device 1100 may specifically be a network device of an embodiment of the present application, and the communication device 1100 may implement corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0159] Optionally, the communication device 1100 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0160] Fig.12 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.12The chip 1200 shown includes a processor 1210, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0161] Alternatively, if Fig.12 As shown, the chip 1200 may further include a memory 1220. The processor 1210 may call and run a computer program from the memory 1220 to implement the method in the embodiment of the present application.

[0162] The memory 1220 may be a separate device independent of the processor 1210 , or may be integrated into the processor 1210 .

[0163] Optionally, the chip 1200 may further include an input interface 1230. The processor 1210 may control the input interface 1230 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0164] Optionally, the chip 1200 may further include an output interface 1240. The processor 1210 may control the output interface 1240 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0165] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0166] 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 the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0167] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0168] Fig.13 1 is a schematic block diagram of a communication system 1300 provided in an embodiment of the present application. Fig.13 As shown, the communication system 1300 includes a terminal device 1310 and a network device 1320 .

[0169] Among them, the terminal device 1310 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1320 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0170] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media 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.

[0171] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0172] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), 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 link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, 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.

[0173] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0174] 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 the sake of brevity, they are not repeated here.

[0175] 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 the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0176] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0177] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0178] 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 enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0179] The embodiment of the present application also provides a computer program.

[0180] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0181] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0182] Those of ordinary skill in the art will appreciate 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0183] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0184] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0185] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple 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.

[0186] 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 separately, or two or more units may be integrated into one unit.

[0187] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0188] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A cell reselection method, the method comprising: The terminal device receives first configuration information sent by the serving cell, where the first configuration information is used to determine the multimedia broadcast multicast service MBMS service deployment information of the neighboring cell; The terminal device determines a target cell for cell reselection based on the first configuration information; The first configuration information is carried in MBMS signaling; The MBMS service deployment information of the neighboring cell includes: MBMS service deployment information of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the each cell belongs to an adjacent cell of the serving cell.

2. The method according to claim 1, wherein: The first configuration information is carried in a system information block SIB.

3. The method according to claim 1 or 2, wherein: The adjacent frequency MBMS service deployment information includes: MBMS service deployment information of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell.

4. A cell reselection method, the method comprising: The serving cell sends first configuration information to the terminal device, where the first configuration information is used to determine MBMS service deployment information of a neighboring cell; The first configuration information is carried in MBMS signaling; The MBMS service deployment information of the neighboring cell includes: MBMS service deployment information of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the each cell belongs to an adjacent cell of the serving cell.

5. The method according to claim 4, wherein: The first configuration information is carried in a SIB message.

6. The method according to claim 4 or 5, wherein: The adjacent frequency MBMS service deployment information includes: MBMS service deployment information of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell.

7. A cell reselection device, applied to a terminal device, the device comprising: A receiving unit, configured to receive first configuration information sent by a serving cell, where the first configuration information is used to determine MBMS service deployment information of a neighboring cell; The first configuration information is carried in MBMS signaling; The MBMS service deployment information of the neighboring cell includes: MBMS service deployment information of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell, and each cell of the individual cells belongs to an adjacent cell of the serving cell; A determination unit is used to determine a target cell for cell reselection based on the first configuration information.

8. The device according to claim 7, wherein: The first configuration information is carried in the SIB or in MBMS signaling.

9. The device according to claim 7 or 8, wherein: The adjacent frequency MBMS service deployment information includes: MBMS service deployment information of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of the serving cell.

10. A cell reselection device, applied to a network device, comprising: A sending unit, configured to send first configuration information to a terminal device, wherein the first configuration information is used to determine MBMS service deployment information of a neighboring area; The first configuration information is carried in MBMS signaling; The MBMS service deployment information of the neighboring cell includes: MBMS service deployment information of each cell of at least one frequency layer, wherein each frequency layer of the at least one frequency layer belongs to an adjacent frequency of a serving cell, and each cell of the individual cells belongs to an adjacent cell of the serving cell.

11. The device according to claim 10, wherein: The first configuration information is carried in a SIB message.

12. The device according to claim 10 or 11, wherein: The adjacent frequency MBMS service deployment information includes: MBMS service deployment information of at least one frequency layer, wherein each frequency layer in the at least one frequency layer belongs to an adjacent frequency of a serving cell.

13. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 3.

14. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 4 to 6.

15. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 3.

16. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 4 to 6.

17. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 3.

18. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 4 to 6.

19. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method according to any one of claims 1 to 3.

20. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method according to any one of claims 4 to 6.

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