WO2024032221A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2024032221A1
WO2024032221A1 PCT/CN2023/104065 CN2023104065W WO2024032221A1 WO 2024032221 A1 WO2024032221 A1 WO 2024032221A1 CN 2023104065 W CN2023104065 W CN 2023104065W WO 2024032221 A1 WO2024032221 A1 WO 2024032221A1
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Prior art keywords
mcch
message
terminal device
information
mcch modification
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PCT/CN2023/104065
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English (en)
French (fr)
Inventor
张海森
李秉肇
许斌
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华为技术有限公司
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Publication of WO2024032221A1 publication Critical patent/WO2024032221A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the embodiments of the present application relate to the field of communication, and more specifically, to a communication method and a communication device.
  • Multicast and Broadcast Service is a service for multiple terminal equipment (User Equipment, UE), such as live broadcast service, public safety service, batch software update service, etc.
  • UE User Equipment
  • the multicast service is designed for services with high QoS requirements. It requires group management for the multicast service and can provide the same QoS level as the unicast service.
  • the core network needs to manage the joining and exiting of UEs. Multicast services are provided to UEs in RRC connected state, and gNB and CN need to maintain UE information corresponding to the multicast service group.
  • the UE does not receive the paging message correctly, it may not be able to receive subsequent multicast broadcast services normally, resulting in reduced multicast broadcast service transmission reliability.
  • This application provides a communication method and communication device, which can improve the reliability of multicast broadcast service transmission.
  • the first aspect provides a communication method, which can be executed by a terminal device, or can also be executed by a component (such as a chip or circuit) of the terminal device, which is not limited in this application.
  • a component such as a chip or circuit
  • the following description takes execution by the first terminal device as an example.
  • the method may include: the first terminal device determines a first paging opportunity according to the identity of the first terminal device; when the first terminal device does not monitor a paging message at the first paging opportunity. , the first terminal device starts to monitor the physical downlink control channel PDCCH corresponding to the multicast broadcast control channel MCCH within the first period; receives the first downlink control information DCI on the PDCCH, and receives the MCCH according to the first DCI message, the MCCH message includes configuration information of the multicast service.
  • the first terminal device when the first terminal device cannot detect the paging message on the corresponding PO, because it is not sure whether the network side did not send it or whether it was missed or wrongly detected due to some abnormalities, then within the period corresponding to the PO Monitor the PDCCH, further read the MCCH message through the DCI received on the PDCCH, and obtain the configuration information of the multicast service. This can effectively avoid missing the multicast service activation message information because the UE has not read the paging message, and effectively improves multicast performance. Reliability of business transmission.
  • the first period is the MCCH modification period in which the first paging opportunity occurs; or the first period is the first paging opportunity.
  • the Nth MCCH modification period after the current MCCH modification period where N is a positive integer, and N is a positive integer.
  • the first terminal device can accurately start monitoring the PDCCH corresponding to the MCCH in a fixed period.
  • the first DCI includes first indication information
  • receiving the MCCH message according to the first DCI includes: when the first indication information indicates reading the MCCH message, the MCCH message is received according to the first information.
  • the first indication information includes a first bit, and the When the first bit value is the first value, the first indication information instructs the first terminal device to read the MCCH.
  • the first terminal device determines to skip M consecutive MCCH modification periods according to the second indication information, and the second indication information is carried in DCI or In the MCCH message, M is a positive integer.
  • the second aspect provides a communication method, which can be executed by a network device, or can also be executed by a component of the network device (such as a chip or a circuit), which is not limited in this application.
  • a component of the network device such as a chip or a circuit
  • the following description takes execution by the first terminal device as an example.
  • the method may include: the network device determines the first paging opportunity corresponding to the first terminal device; the network device starts sending the first downlink control information DCI in the first period corresponding to the first paging opportunity, and the first downlink control information DCI is A DCI is used for the first terminal device to schedule the multicast control channel MCCH message when the first terminal device does not monitor the paging message on the first paging opportunity; the first DCI of the network device is used to schedule the MCCH message, and the MCCH message Contains multicast service configuration information.
  • the first period is the MCCH modification period in which the first paging opportunity occurs; or the first period is the first paging opportunity.
  • the Nth MCCH modification period after the current MCCH modification period where N is a positive integer, and N is a positive integer.
  • the first DCI includes first indication information
  • the first indication information includes a first bit
  • the value of the first bit is the first value.
  • the first indication information indicates when the first terminal device reads the MCCH message.
  • the method further includes: sending second instruction information to the first terminal device, the second instruction information instructing the first terminal device to skip M consecutive MCCH modification period, the second indication information is carried in DCI or the MCCH message.
  • a communication method is provided, which can be executed by a network device, or can also be executed by a component (such as a chip or circuit) of the network device, which is not limited in this application.
  • a component such as a chip or circuit
  • the following description takes execution by a network device as an example.
  • the method may include: the network device determines the first paging opportunity PO corresponding to the first terminal device; the network device sends the first information to the first terminal device on the first paging opportunity PO, and the first paging opportunity PO corresponds to the network device.
  • a message indicates that the first terminal device does not receive MCCH messages corresponding to M consecutive MCCH modification periods of the multicast broadcast control channel, and the M consecutive MCCH modification periods are the M consecutive MCCH modifications after the MCCH modification period corresponding to the first PO.
  • Period the network device sends the MCCH message in the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO.
  • the method further includes: the network device determines a second PO corresponding to the second terminal device; and the network device sends a message to the second terminal device on the second PO.
  • Second information indicates that the second terminal device does not receive MCCH messages corresponding to N consecutive MCCH modification periods, and the N consecutive MCCH modification periods are N consecutive MCCH modifications after the MCCH modification period corresponding to the second PO. cycle; the second The N+1th MCCH modification period after the MCCH modification period corresponding to the PO is the same as the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO.
  • the N+1th MCCH period after the MCCH modification period corresponding to the second PO is the same as the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO, so that for different POs, but UEs that need to receive the same multicast service can start receiving MCCH messages in the same period to avoid power consumption caused by UEs with earlier POs from prematurely monitoring and receiving MCCH messages.
  • the method further includes: before sending the MCCH message, the network device sends third indication information, the third indication information indicates to the first terminal The device reads the MCCH message.
  • the third indication information includes a second bit, and when the value of the second bit is the first value, the third indication information instructs the UE to read Take MCCH.
  • the fourth aspect provides a communication method, which can be executed by a terminal device, or can also be executed by a component (such as a chip or circuit) of the terminal device, which is not limited in this application.
  • a component such as a chip or circuit
  • the following description takes execution by the second terminal device as an example.
  • the method may include: the first terminal device receives first information on the first paging opportunity PO, the first information indicating that the first terminal device does not receive M consecutive multicast broadcast control channels MCCH modification periods corresponding to MCCH message; the first terminal device does not receive the MCCH message corresponding to the M MCCH modification periods according to the first information.
  • the first terminal device receives third indication information, and reads the MCCH message corresponding to the M+1th MCCH modification period according to the third indication information.
  • a communication device which is used to perform the method in any of the possible implementation manners of the first to fifth aspects.
  • the device may include units and/or modules for performing the method in any possible implementation of the first to fifth aspects, such as a processing unit and/or a communication unit.
  • the device is a terminal device.
  • the communication unit may be a transceiver, or an input/output interface;
  • the processing unit may be at least one processor.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the device is a chip, a chip system or a circuit for a terminal device.
  • the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit, etc.
  • the processing unit may be at least one processor, processing circuit or logic circuit, etc.
  • a sixth aspect provides a communication device, which includes: at least one processor configured to execute a computer program or instructions stored in a memory to perform the method in any of the possible implementations of the first to fifth aspects.
  • the device further includes a memory for storing computer programs or instructions.
  • the device further includes a communication interface, through which the processor reads the computer program or instructions stored in the memory.
  • the device is a terminal device.
  • the device is a chip, a chip system or a circuit for a terminal device.
  • the present application provides a processor for executing the methods provided in the above first to fifth aspects.
  • a computer-readable storage medium stores a program code for device execution.
  • the program code includes a method for executing any of the possible implementations of the above-mentioned first to fifth aspects. method.
  • a computer program product containing instructions is provided.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute the method in any of the possible implementation modes of the first to fifth aspects.
  • a communication system including at least one of the aforementioned first terminal devices and network equipment.
  • Figure 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the MBS service transmission process
  • Figure 3 is a schematic diagram of the multicast service transmission process
  • Figure 4 is a schematic diagram of the specific transmission mechanism of MCCH
  • Figure 5 is a schematic diagram of the service deactivation process
  • Figure 6 is a schematic flow chart of a communication method proposed in this application.
  • Figure 7 is a schematic diagram of the monitoring timing of MCCH corresponding to PDCCH
  • Figure 8 is a schematic diagram of multi-UE paging opportunities
  • FIG. 9 is a schematic flow chart of another communication method proposed in this application.
  • Figure 10 is a schematic diagram of MCCH message sending timing in a multi-UE scenario
  • Figure 11 is a schematic diagram of a communication device 1100 provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of another communication device 1200 provided by an embodiment of the present application.
  • Figure 13 is a schematic diagram of a chip system 1300 provided by an embodiment of the present application.
  • FIG. 1 is a schematic architectural diagram of a communication system 1000 applied in an embodiment of the present application.
  • the communication system includes a wireless access network 100 and a core network 200.
  • the communication system 1000 may also include the Internet 300.
  • the radio access network 100 may include at least one radio access network device (110a and 110b in Figure 1), and may also include at least one terminal (120a-120j in Figure 1).
  • the terminal is connected to the wireless access network equipment through wireless means, and the wireless access network equipment is connected to the core network through wireless or wired means.
  • the core network equipment and the radio access network equipment can be independent and different physical devices, or the functions of the core network equipment and the logical functions of the radio access network equipment can be integrated on the same physical device, or they can be one physical device.
  • Figure 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Figure 1 .
  • the core network equipment can also be called core network device and can include one or more of the following network elements: unified data management (UDM) network element, application function (AF) network element, policy Policy control function (PCF) network element, network exposure function (NEF) network element, access and mobility management function (AMF) network element, session management function (session management) function (SMF) network element, user plane function (UPF) network element, etc.
  • UDM unified data management
  • AF application function
  • PCF policy Policy control function
  • NEF network exposure function
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • Each of the above network elements can also be called a device, equipment or entity, and this application is not limited thereto.
  • a UDM network element can also be called a UDM device, UDM equipment or UDM entity.
  • abbreviations will be used below.
  • AMF network element is referred to as "AMF”.
  • Wireless access network equipment can be a base station, an evolved base station (evolved NodeB, eNodeB), a transmission reception point (TRP), or the next generation of the fifth generation (5th generation, 5G) mobile communication system.
  • Base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also complete the base station part
  • a functional module or unit for example, can be a centralized unit (CU) or a distributed unit (DU).
  • the CU here completes the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can also complete the functions of the service data adaptation protocol (SDAP); DU completes the functions of the base station
  • the functions of the wireless link control layer and medium access control (MAC) layer can also complete some or all of the physical layer functions.
  • the wireless access network equipment may be a macro base station (110a in Figure 1), a micro base station or an indoor station (110b in Figure 1), or a relay node or donor node.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the wireless access network equipment.
  • Wireless access network equipment may also be called network devices.
  • the following description takes a base station as an example of a radio access network device.
  • the terminal can also be called terminal equipment, terminal device, user equipment (UE), mobile station, mobile terminal, etc.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things ( internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc.
  • Terminals can be mobile phones, tablets, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the terminal.
  • Base stations and terminals can be fixed-location or mobile. Base stations and terminals can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.
  • the helicopter or drone 120i in Figure 1 may be configured as a mobile base station.
  • the terminal 120i is Base station; but for base station 110a, 120i is a terminal, that is, communication between 110a and 120i is through a wireless air interface protocol.
  • communication between 110a and 120i can also be carried out through an interface protocol between base stations.
  • relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively called communication devices.
  • 110a and 110b in Figure 1 can be called communication devices with base station functions
  • 120a-120j in Figure 1 can be called communication devices with terminal functions.
  • Communication between base stations and terminals, between base stations and base stations, and between terminals can be carried out through licensed spectrum, or through unlicensed spectrum, or through licensed spectrum and unlicensed spectrum at the same time; it can communicate through 6,000 It can communicate using spectrum below gigahertz (GHz), it can also communicate through spectrum above 6GHz, and it can also communicate using spectrum below 6GHz and spectrum above 6GHz at the same time.
  • GHz gigahertz
  • the embodiments of the present application do not limit the spectrum resources used for wireless communication.
  • the functions of the base station may also be performed by modules (such as chips) in the base station, or may be performed by a control subsystem that includes the base station functions.
  • the control subsystem containing base station functions here can be the control center in the above application scenarios such as smart grid, industrial control, smart transportation, smart city, etc.
  • the functions of the terminal can also be controlled by the terminal It can be executed by a module (such as a chip or modem), or it can be executed by a device containing terminal functions.
  • Wireless communication between communication devices may include: wireless communication between network devices and terminals, wireless communication between network devices and network devices, and wireless communication between terminal devices.
  • wireless communication can also be referred to as “communication”
  • communication can also be described as "data transmission”, “information transmission” or “transmission”.
  • terminal equipment is also called “terminal device”, “terminal”, etc.
  • network equipment is also called “network device”, “network side”, etc.
  • core network equipment is also called “core network equipment”.
  • Multicast and broadcast service It is a service for multiple terminal devices, such as live broadcast service, public safety service, batch software update service, etc.
  • the MBS service comes from the data server.
  • the data server sends the MBS data to the core network device.
  • the core network device sends the MBS data to the base station.
  • the base station sends the MBS data to at least one UE that receives the MBS service.
  • MBS includes multicast services and broadcast services.
  • the MBS service When sent from the core network to the base station, the MBS service is transmitted through a common transmission channel MBS session. Each MBS session can contain at least one MBS quality of service (QoS) flow.
  • QoS quality of service
  • the data packet When sending from the base station to the UE, the data packet is transmitted through the MBS wireless bearer.
  • MBS wireless bearer There are two transmission modes for an MBS wireless bearer: the first one can use point to multi-point (PTM) transmission mode. , the second one can use point to point (PTP) transmission method.
  • PTM point to multi-point
  • PTP point to point
  • Multicast service is designed for services with high QoS requirements. Multicast service can provide the same QoS level as unicast service. Group management needs to be performed for multicast services. Specifically, as shown in (a) in Figure 3, for multicast services, the core network needs to manage the joining and exit of UEs. The transmission between the core network and the base station relies on the protocol data unit session (PDU session), and the MBS QoS flow (flow) is introduced.
  • the radio access network device radio access network, RAN
  • RAN radio access network
  • the access network device and the terminal device have a peer-to-peer protocol stack structure for mutual communication.
  • the user plane protocol stack structure can include the RRC layer, service data adaptation protocol (SDAP) layer, PDCP layer, and Radio Link Control (Radio Link Control, RLC) layer , MAC layer and physical (physical, PHY) layer, etc.
  • the physical layer is located at the lowest layer (layer one)
  • the MAC layer, RLC layer, PDCP layer and SDAP layer belong to the second layer (layer two)
  • the RRC layer belongs to the third layer (layer three).
  • data is transmitted in the direction shown by the arrow in the figure (for MBS service, the transmission direction is from the base station to the UE).
  • the data first reaches the SDAP layer of the base station and is mapped by the SDAP layer. Later, it is transmitted to the corresponding PDCP entity, processed by the PDCP layer of the base station, and then transmitted to the RLC layer and MAC layer. After corresponding processing, it is sent out from the physical layer and transmitted to the UE side through the air interface. Then each protocol layer on the UE side performs corresponding processing on the data packets in sequence in the opposite processing order as that of the base station.
  • Each radio bearer configuration will contain a PDCP entity, and each radio bearer configuration will be associated with at least one RLC entity, and each RLC entity corresponds to a logical channel.
  • MRB multicast radio bearer
  • MRB includes the following three types: PTP only MRB, PTM only MRB, and split MRB (PTP MRB+PTM MRB).
  • PTP only MRB is associated with a PTP RLC entity
  • PTM only MRB is associated with a PTM RLC entity
  • split MRB is associated with a PTM RLC entity and a PTP RLC entity.
  • PTM RLC has many Each UE is the same. Multiple UEs use the same group radio network temporary identifier (g-RNTI) for descrambling.
  • PTP RLC is independent for each UE. Each UE uses its own cell radio network temporary identifier. Identifier (cell radio network temporary identifier, C-RNTI) monitoring.
  • G-RNTI and g-RNTI in the embodiments of the present application can be replaced with each other, and C-RNTI and c-RNTI can be replaced with each other. This is not limited in the embodiments of the present application.
  • Multicast services can only be provided to UEs in radio resource control (RRC) connected state, and access network equipment and core network equipment need to maintain UE information corresponding to multicast broadcast service groups.
  • RRC radio resource control
  • the multicast service also supports the deactivation or activation of the MBS session triggered by the core network, and the UE does not perceive the service status.
  • the communicating parties in the multicast service can send data within a limited area, or send different contents in different areas.
  • Multicast broadcast control channel and multicast broadcast service channel Two logical channels are introduced in the broadcast technology of NR MBS, multicast broadcast control channel (MBS control channel, MCCH) and multicast broadcast service channel (MBS traffic channel, MTCH), where MCCH is used to transmit control information, including MTCH configuration information, such as g-RNTI and DRX parameters corresponding to MTCH. MCCH is sent periodically.
  • the MTCH logical channel is used to carry user data of broadcast services.
  • MTCH is scheduled through MCCH.
  • the configuration of MTCH is per (per) g-RNTI level, which can also be said to be per MBS service level.
  • the base station schedules service data to multiple UEs simultaneously through g-RNTI, and each g-RNTI can be associated with at least one broadcast service.
  • the above channels may correspond to different names.
  • the multicast broadcast service control channel may be a single cell multicast broadcast service control channel (single cell MCCH, SC-MCCH).
  • the multicast broadcast service control channel may be MC-MCCH.
  • channels with similar functions to the multicast broadcast service control channel may have other names, or in different communication environments, communication scenarios or communication technologies, channels with the same functions may also have different names.
  • Different names of channels with similar or identical functions in different systems do not limit the channel content and functions.
  • the multicast broadcast control channel in this application can be used to transmit control information, and the multicast broadcast service channel can be used to transmit user data.
  • MCCH is used to represent the multicast broadcast service control channel
  • MTCH is used to represent the multicast broadcast service channel
  • Multicast broadcast control channel modification notification As shown in Figure 4, MCCH is sent repeatedly in each modification period (Modification period, MP), including the repetition period (repetition period, RP). In an MP, the content of MCCH is the same.
  • MP Modification period
  • the network device sends a PDCCH containing a modification notification, and the modification notification is MCCH change notification.
  • the UE detects the field corresponding to the MCCH change notification on the PDCCH, such as 2 bits, it is considered that a modification notification has been detected, and the UE reacquires the MCCH.
  • the UE When the UE obtains the MCCH, it needs to detect the MCCH-RNTI scrambled PDCCH to obtain the MCCH scheduling information.
  • the first bit in the MCCH modification notification indicates that the reason for the MCCH modification is session start, and the second bit in the MCCH modification notification indicates that the reason for the MCCH modification is session modification, session stop, or neighbor cell list update.
  • RRC state There are three RRC states in NR: RRC idle state (RRC_IDLE), RRC inactive state (RRC_INACTIVE), and RRC connected state (RRC_CONNECTED). The following is a brief introduction to the three RRC states.
  • RAN has the context of the UE, and the UE and RAN have a signaling connection.
  • the UE can receive messages and system messages sent by the RAN to control the UE to perform data transmission, handover, and notify the UE of relevant scheduling information, and the RAN can receive channel quality information fed back by the UE.
  • RRC inactive state The connection between the RAN and the core network is maintained, and no resources are allocated to the air interface. It can quickly restore services and improve the experience of delay-sensitive applications. In addition, the power saving effect of users in inactive state can also be close to that of idle state, extending the battery life of mobile phones.
  • 3RRC_IDLE (RRC idle state): RAN has no context for the UE, and there is no signaling connection between the UE and the RAN. In this state, the UE can receive system messages and paging messages, and perform cell selection and reselection. When the UE needs to establish a connection with the network for a certain purpose (service request, location update, paging, etc.), the RRC connection establishment is triggered. After the RRC connection is established, it enters the RRC connection state.
  • a certain purpose service request, location update, paging, etc.
  • the RRC non-connected state in this application may be the RRC idle state and/or the RRC inactive state.
  • the non-connected state in this application can be replaced by the RRC idle state and/or the RRC inactive state.
  • Multicast session ID used to identify services.
  • a multicast session ID can be associated with a service.
  • the multicast session identifier may be a temporary multicast group identifier (TMGI).
  • the MBS session deactivation process applies to multicast.
  • the MBS session deactivation process is triggered by the multicast session management function (MB-SMF) network element.
  • M-SMF multicast session management function
  • MB user plane MBS Session The deactivation process is used to deactivate the MBS data resources of the 5G access network (NG-RAN) node.
  • NG-RAN 5G access network
  • 5GC 5G core network
  • the RAN releases the radio resources of the multicast session and stops transmitting multicast session data to the UE.
  • the base station can release the RRC connection to the UE or not, without notifying the UE.
  • the multicast session state transitions from active to inactive.
  • the deactivation state may be that the current service of the UE is in the deactivation state, or the session related to the current service is in the deactivation state.
  • the base station may instruct the UE to release the service. .
  • the MBS release process is triggered by the core network.
  • the core network (CN) N decides to release a multicast service or delete a UE from the multicast service, the above process can be executed. If the CN determines that there is a CM-IDLE UE, the CN will initiate paging to bring the UE into the connected state to perform the subsequent release process.
  • the message sent may be a group paging message (when the base station supports multicast), or a unicast paging message (when the base station does not support multicast, the multicast service is provided through unicast).
  • the state of the multicast broadcast service can also be understood as the state of the multicast broadcast session, and releasing the multicast broadcast session service can also be understood as releasing the multicast broadcast session.
  • the service can also be understood as Multicast broadcast service.
  • “service” and “session” can be replaced with each other.
  • the MBS session activation process only applies to multicast.
  • the MBS session activation process is triggered by MB-SMF.
  • MB-SMF receives a notification from MB-UPF about MBS downlink data, or when MB-SMF directly receives a request forwarded by AF or through NEF, the MBS Session activation process is triggered.
  • the MBS Session activation process is used to activate the MBS data resources of the NG-RAN node, such as establishing wireless resources for multicast sessions and transmitting multicast session data to the UE.
  • UEs in the connection management-IDLE (CM)-IDLE) state and CM-CONNECTED+RRC Inactive state that join the multicast session will be paged (paging), which can be requested by the AF of MB-UPF or
  • the data notification triggers the activation process of these UEs, and the multicast session state transitions from the deactivation state to the activation state.
  • the message used by the AMF to page the UE in the CM-IDLE state can be a group paging message (when the base station supports multicast), or a unicast paging message (when the base station does not support multicast, through unicast Provide multicast services).
  • the AMF sends a multicast session activation request message to the RAN, the RAN paging process can be triggered.
  • the multicast broadcast control channel or MCCH mentioned in this application is used for multicast services. Specifically, it can be used to carry configuration information of multicast services.
  • the configuration information of multicast services can be sent through MCCH messages.
  • the multicast broadcast control channel may be shared with the multicast broadcast control channel used by the broadcast service, or may be a channel specifically used to carry configuration information of the multicast service.
  • This application does not limit the definition method or name of the multicast broadcast control channel or MCCH. It can be replaced by other expressions or names, and it can be replaced by other channels used to contain multicast service configuration information.
  • monitoring the MCCH or reading the MCCH in this application refers to monitoring the PDCCH corresponding to the MCCH, or using the RNTI corresponding to the MCCH (such as MCCH-RNTI) to monitor the PDCCH, or using the RNTI corresponding to the MCCH (such as MCCH-RNTI) to solve the problem. Scramble the DCI and/or obtain the MCCH message or the scheduling information of the PDSCH corresponding to the MCCH.
  • the multicast broadcast service channel or multicast broadcast transmission channel or MTCH is used for multicast services. Specifically, it can be used to carry multicast service data.
  • the multicast service data can be carried through the MTCH.
  • the multicast broadcast service/transmission channel may be shared with the multicast broadcast service/transmission channel used by the broadcast service, or may be a channel specifically used to carry data of the multicast service.
  • This application does not limit the definition method or name of the multicast broadcast service/transmission channel or MTCH, which can be replaced by other expressions or names, and can be replaced by other channels used to contain multicast service data.
  • monitoring MTCH or reading MTCH in this application refers to monitoring the PDCCH corresponding to the MTCH, or using the RNTI corresponding to the MTCH (such as G-RNTI) to monitor the PDCCH, or using the RNTI corresponding to the MTCH (such as G-RNTI) to resolve the problem. Scramble the DCI and/or obtain the scheduling information of the PDSCH corresponding to the MTCH.
  • the UE In the context of receiving multicast services in a non-connected state, if the UE is released to a non-connected state to receive multicast services, the UE must always use G-RNTI to listen to the PDCCH to read service data.
  • the network equipment if the core network triggers the service deactivation process to the base station, the network equipment will stop sending data for a long period of time.
  • the network provides multicast services in non-connection mode, if the service is deactivated, the UE needs to be notified of the status of the corresponding service.
  • the base station When the multicast or broadcast service is deactivated, if the base station is providing non-connection mode transmission service, instruct the relevant service to be deactivated. In one possible way, the base station indicates service deactivation through MCCH.
  • the UE may have the following choices:
  • Option1 The UE stops monitoring MTCH, continues to monitor the PDCCH corresponding to MCCH, and obtains when the service is activated through MCCH;
  • Option2 The UE stops monitoring MTCH, continues to monitor the PDCCH corresponding to MCCH, and continues to monitor paging;
  • Option3 The UE stops monitoring MTCH and MCCH and continues to monitor paging.
  • the UE when the service is activated, the UE receives paging and triggers monitoring of MCCH and MTCH to start receiving data.
  • the UE may fail to receive paging or miss detection. Due to overhead issues, for example, paging messages may not always have resources to send TMGI. The network side will most likely not send paging repeatedly for reliability. Once it is missed/missed/ The impact on inactive UEs that receive multicast after decoding the activation indication is more serious than that of ordinary UEs that miss/miss detection/erroneously decode paging. Ordinary UEs do not receive paging and do not enter the connected state, which can be sensed by the base station and the core network.
  • Paging can be initiated again, but once the UE in the non-connected state receives multicast misses, the network will not detect that the UE has not received the service activation notification. Once the deactivation and reactivation operations are not performed for a long period of time after the service is deactivated, the UE will not receive the service during this period, which will cause the service to be missed. Therefore, how to ensure that the UE can still normally start receiving non-connected services after missing paging is an issue that needs to be solved urgently.
  • This application provides a communication method.
  • the UE When the UE does not monitor the paging message on its corresponding PO, the UE monitors the PDCCH corresponding to the MCCH to prevent the UE from missing business-related messages, thereby improving the reliability of business transmission. See Figure 6.
  • the first terminal device may also be referred to as UE1 for short.
  • the first terminal device determines the first paging opportunity.
  • the first terminal device determines the first PO based on its identification.
  • the paging time also includes two-level settings: paging frame (PF) and paging occasion (Paging Occasion, PO).
  • PF, and Po are calculated based on the terminal identification.
  • the terminal identification can be obtained from 5G-S-TMSI mod 1024.
  • the first terminal device starts monitoring the PDCCH corresponding to the MCCH within the first period.
  • the first terminal device uses a first identifier to monitor the PDCCH, and the first identifier is the RNTI corresponding to the MCCH, for example, MCCH-RNTI.
  • the first terminal device when the first terminal device does not monitor the paging message on the first PO, the first terminal device starts monitoring the PDCCH within the first period.
  • Starting to monitor the PDCCH within the first period can be understood as monitoring the PDCCH from the start time of the first period.
  • the rule that UE1 monitors the PDCCH corresponding to the MCCH in the first period of time without listening to the paging message in the first PO can be fixed in the protocol, that is, UE1 always executes according to this rule; it can also be configured by the network for UE1, such as Indicated when the service is deactivated.
  • the MCCH message contains relevant indication information to indicate the rule; or it is configured when the RRC is released to the non-connected state to receive the corresponding service, or it is broadcast in the system message whether the UE needs to perform this behavior. .
  • the indication information can be 1 bit or set to True for a field. When this indication information exists This behavior is deemed necessary.
  • the first period is the MCCH modification period where the first paging opportunity is located; or the first period is the Nth MCCH modification period after the MCCH modification period where the first paging opportunity is located.
  • N is a positive integer.
  • the first period is the Nth MCCH modification period after the MCCH modification period in which the first paging opportunity occurs.
  • the first period is the first MCCH modification period after the MCCH modification period in which the first paging opportunity occurs.
  • several MCCH modification cycles are possible to be performed.
  • the first period is the MCCH modification period in which the first paging opportunity occurs
  • the MCCH modification period where the first paging opportunity occurs is MCCH period 1
  • the first time period may be MCCH period 1
  • the first time period may be the MCCH modification period where the first paging opportunity occurs.
  • the MCCH modification period after the period for example, MCCH modification period 2.
  • the N can be configured by the base station, for example, configured through RRC high-level signaling, or configured through DCI information, or MAC CE Signaling configuration. Or the N is a predefined parameter.
  • UE1 when UE1 cannot detect the paging message on the corresponding PO, because it is not sure whether the network side did not send it or whether it was missed or wrongly detected due to some anomalies, it monitors the PDCCH in the period corresponding to the PO. Further reading the MCCH message through the DCI received on the PDCCH to obtain the configuration information of the multicast service can effectively avoid missing the multicast service activation information because UE1 has not read the paging message, effectively improving the reliability of multicast service transmission. sex.
  • the first terminal device when the first terminal device does not monitor the paging message on the first PO, the first terminal device responds to the MCCH modification period corresponding to the first PO or the Nth MCCH after the MCCH modification period corresponding to the first PO. Start monitoring PDCCH during the modification period.
  • the MCCH modification period where the first PO is located is MCCH period 1
  • the first MCCH modification period after the MCCH modification period where the first PO is located is MCCH period 2
  • the MCCH modification period after the first PO is The second MCCH modification period is MCCH period 3, and so on.
  • the first terminal device monitors the paging message on the first PO, it can be specifically divided into the following situations:
  • the first terminal device receives paging messages from other UEs on the first PO, or the service identifier included in the paging message is other multicast service identifiers that the first terminal device is not interested in, then the first terminal device has no Other special actions.
  • the paging message received by the first terminal device on the first PO contains the identification information of the first terminal device, and the first terminal device enters the connected state to receive the service.
  • the paging message received by the first terminal device on the first PO contains the service activation information of the multicast service that it is interested in.
  • the paging message contains TMGI 1 and a service activation indication, where TMGI 1 is UE1 If the identification of the multicast service expected to be received is obtained, the first terminal device reads the MCCH message in the next MCCH cycle according to the paging message.
  • the network device starts sending the first DCI in the first period corresponding to the first paging opportunity.
  • the first DCI is used to schedule the MCCH message, for example, when the first terminal device does not monitor the paging opportunity on the first paging opportunity. Scheduling MCCH messages.
  • the network device determines the first paging opportunity corresponding to the first terminal device. Specifically, the network device determines the first paging opportunity corresponding to the first terminal device according to its identifier.
  • step 303 and step 302 are not limited.
  • the first terminal device receives the first DCI on the PDCCH, and receives an MCCH message according to the first DCI.
  • the MCCH message includes the configuration information of the multicast service.
  • the first DCI contains first indication information
  • receiving the MCCH message according to the first DCI specifically includes: when the first indication information instructs the first terminal device to read the MCCH message, the first terminal device reads the MCCH message according to the first DCI. Receive MCCH message.
  • the first DCI schedules the PDSCH where the MCCH message is located. Therefore, after receiving the first DCI, UE1 receives the MCCH message at the time-frequency position indicated by the DCI.
  • the MCCH message includes configuration information of the multicast service.
  • UE1 determines whether to receive the MCCH message scheduled by the first DCI according to the value status of the first indication information in the first DCI or according to whether the first DCI contains the first indication information.
  • the MCCH message is carried in the PDSCH, and the first DCI schedules the PDSCH.
  • the first indication information includes a first bit.
  • the first indication information indicates UE reads MCCH.
  • the first value is 1, or the first value is 0.
  • UE1 receives the MCCH message on the MCCH channel according to the bit with a value of 1.
  • the specific time-frequency resource location where the MCCH message is located is indicated by other information in the DCI.
  • the first DCI also includes time-frequency resource indication information, indicating the time-frequency location of the MCCH message in the PDSCH.
  • the first indication information may also complete the instruction by implicit indicating. For example, when the first DCI contains the first indication information, it indicates that the MCCH message is read; when the first DCI does not contain the first indication information, it indicates that the MCCH message is not read.
  • the first indication information may be expressed as "true”.
  • the first indication information includes two bits.
  • the first indication information includes a 2-bit field "MCCH change notification”, and the value of one of the two bits is used to indicate whether the UE reads the MCCH message. For example, if the first bit or the second bit of the two bits takes a first value, it indicates that the MCCH message is read, and if it takes a second value, it indicates that there is no need to read the MCCH message. Among them, the first value is 1 and the second value is 0, or vice versa.
  • the MCCH message includes the configuration message of the multicast service, for example, the configuration information of the MTCH, such as the G-RNTI and DRX parameters corresponding to the MTCH.
  • the MTCH logical channel carries user data of the broadcast service.
  • MTCH is scheduled through MCCH.
  • the configuration of MTCH can be at G-RNTI level or MBS service level. Among them, gNB schedules service data to multiple UEs at the same time through group RNTI (G-RNTI, Group RNTI). Each G-RNTI can be associated with at least one broadcast service or multicast service.
  • UE1 can receive the user data of the multicast service on the corresponding MTCH according to the MCCH message.
  • this method can also include:
  • Step S305 The first terminal device receives second instruction information from the network device.
  • the network device sends second instruction information to the first terminal device.
  • the first terminal device determines to skip M consecutive MCCH modification periods according to the second indication information, the second indication information is carried in the DCI or the MCCH message, and M is a positive integer.
  • Skipping the M consecutive MCCH modification periods here can be understood as UE1 not receiving MCCH messages within the M consecutive MCCH modification periods.
  • UE1 Since UE1 starts monitoring the PDCCH corresponding to the MCCH by default, it may continue to listen unless it is instructed or is no longer interested in the service. Therefore, optionally, a second instruction message is sent to UE1, instructing UE1 not to receive M consecutive MCCH modification periods. MCCH message within.
  • the second indication information may be carried in the DCI4_0 or MCCH message.
  • the second indication information may indicate that MCCH messages of the same service can be read again after several MCCH modification cycles, which is used to skip consecutive MCCH messages.
  • UE1 when multiple multicast services have this indication, as long as there is a service indicating that the PDCCH corresponding to the MCCH needs to be monitored on a certain MCCH, UE1 needs to monitor it, regardless of whether other service instructions are skipped.
  • UE1 has two multicast services.
  • the second indication information contained in DCI 1 of multicast service 1 is 00001
  • the second indication information contained in DCI2 of multicast service 2 is 00100.
  • the bit string in DCI 1 The meaning of 00001 is to skip 4 consecutive MCCH modification periods and start reading from the 5th MCCH modification period.
  • the bit string 00100 in DCI2 means to skip 2 consecutive MCCH modification periods and start reading from the 3rd MCCH modification period.
  • UE1 When the cycle starts reading, UE1 skips the next two MCCH modification cycles according to the instructions of the two DCIs, and receives MCCH messages from the third modification cycle to the fifth modification cycle.
  • the network device can also directly instruct two to be skipped without instructing according to specific services.
  • the terminal device can skip part of the repeated MCCH messages, thereby reducing the power consumption overhead caused by the terminal device always receiving the same signaling.
  • the corresponding PO may be different.
  • the MTCH or MTCH+MCCH can only start sending after the PO of all UEs receiving the service data.
  • Waiting for the service to start may cause premature monitoring of the PDCCH corresponding to the MCCH, because the network implementation should ensure that activation instructions are sent to all UEs before starting to send services, so the network may start monitoring the G-RNTI prematurely.
  • the cycle may be very long, greater than 10.24s. In this scenario, the non-connected UE may need to listen to G-RNTI for a long time but has no data, which will cause a waste of energy.
  • This application provides a communication method 500.
  • the network device When there are multiple UEs, and the POs of different UEs are different, the network device indicates the reception time of an MCCH message for the multiple UEs, reducing unnecessary monitoring overhead of the UE.
  • the method includes:
  • the network device determines the first paging opportunity corresponding to the first terminal device.
  • the network device determines the first paging opportunity of the first terminal device according to the identity of the first terminal device.
  • the network device determines the second paging opportunity corresponding to the second terminal device.
  • the second PO corresponding to the second terminal device is also determined according to the identification or ID of the second terminal device.
  • the first terminal device is abbreviated as UE1
  • the first paging opportunity is abbreviated as first PO
  • the second terminal device is abbreviated as UE2
  • the second paging opportunity is abbreviated as second PO.
  • Both UE1 and UE2 are terminal devices in the cell where the network device is located, or the RAN areas of UE1 and the second UE both include the cell where the network device is located. Both UE1 and UE2 are interested in multicast service 1.
  • UE1 may be one or more terminal devices, and the PO determined by them is the same, and the same applies to UE2.
  • the network device sends the first information to the first terminal device on the first PO, and the first information indicates that the first terminal device does not receive MCCH messages corresponding to M consecutive MCCH modification periods. It can also be understood that the corresponding MCCH message is received starting from the M+1th MCCH modification period.
  • the first terminal device receives the first information on the first PO, and the first terminal device does not receive MCCH messages corresponding to M MCCH modification periods according to the first information.
  • the M consecutive MCCH modification periods are the M consecutive MCCH modification periods after the MCCH modification period corresponding to the first PO.
  • the MCCH modification period corresponding to the first PO can be understood as the MCCH modification period of the first PO in the time domain.
  • the currently described MCCH modification period may be the 0th modification period or the 1st modification period.
  • the first information may directly instruct the first terminal device to receive the MCCH message at the first moment. That is, the timing of sending the MCCH message is indicated by indicating a specific time, such as a specific frame, subframe, and/or time slot.
  • the second information can be sent to UE2 at this time, and the second information also indicates the first time, and then UE1 and UE2 can receive the MCCH message at the first time at the same time.
  • the first information is carried in the paging message, and the paging message also includes the TMGI corresponding to the multicast service.
  • the activation of the multicast service is indicated through the information carried in the paging message.
  • the first terminal device determines based on its own ID in the paging message received on the first PO and the TMGI of the multicast service 1 of interest that the paging message is used to indicate the reception of its own multicast service. According to the first information in the paging message, it is determined to skip the MCCH message of M MCCH modification periods and receive the MCCH message of the M+1th MCCH modification period; or according to the first information, the MCCH message is directly received at the first moment.
  • the indication information can be at the multicast service level, that is, one service corresponds to one indication.
  • 502 can also include:
  • S502b Send the second information to UE2 on the second PO.
  • the second information indicates that UE2 does not receive MCCH messages corresponding to N consecutive MCCH modification periods.
  • the N consecutive MCCH modification periods are the N consecutive MCCH modification periods corresponding to the second PO. indivual MCCH modification cycle;
  • the N+1th MCCH modification period after the MCCH modification period corresponding to the second PO is the same as the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO.
  • the N+1th MCCH period after the MCCH modification period corresponding to the second PO is the same as the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO, so that different POs need to receive the same multicast Service UEs can start receiving MCCH messages in the same period to avoid power consumption caused by early PO UEs monitoring and receiving MCCH messages prematurely.
  • the network device sends the MCCH message in the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO.
  • UE1 receives the MCCH message in the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO.
  • the network device when the N+1th MCCH modification period after the MCCH modification period corresponding to the second PO is the same as the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO, the network device The MCCH message is sent in the M+1th MCCH modification period after the MCCH modification period, that is, the MCCH message is sent in the N+1th MCCH modification period after the MCCH modification period corresponding to the second PO.
  • UE2 receives the MCCH message in the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO. That is, UE1 and UE2 read the MCCH message in the same MCCH modification period.
  • the network device sends third indication information, and the third indication information instructs UE1 to read the MCCH message.
  • the third indication information is also sent to UE2, and the third indication information also instructs UE2 to read the MCCH message.
  • the third indication information is carried in DCI, such as DCI_4, or in an MCCH message.
  • the third indication information includes a second bit.
  • the third indication information instructs the UE to read the MCCH.
  • the first value is 1, or the first value is 0.
  • UE1 receives the MCCH message on the MCCH channel according to the bit with a value of 1.
  • the specific time-frequency resource location where the MCCH message is located is indicated by other information in the DCI.
  • the first DCI also includes time-frequency resource indication information, indicating the time-frequency location of the MCCH message in the PDSCH.
  • the third indication information may also complete the instruction by implicit indicating. For example, when the first DCI contains the third indication information, it indicates that the MCCH message is read; when the first DCI does not contain the third indication information, it indicates that the MCCH message is not read.
  • the third indication information may be expressed as "true”.
  • the third indication information includes two bits
  • the third indication information includes a 2-bit field "MCCH change notification”
  • the value of one of the two bits is used to indicate whether the UE reads the MCCH message. For example, if the first bit or the second bit of the two bits takes a first value, it indicates that the MCCH message is read, and if it takes a second value, it indicates that there is no need to read the MCCH message. Among them, the first value is 1 and the second value is 0, or vice versa.
  • MCCH change notification includes two bits. The first bit indicates the start or activation of multicast, and the second bit indicates whether the MCCH message has been modified.
  • the MCCH modification notification which is the third indication information: For the network, it is necessary to add the M+1th Among the 2 bits of the modification period, one bit indicating whether the UE reads the MCCH message is set to 1. There is no limit to the other bit. Optionally, the 2 bits of the modification period corresponding to the first duration need to be set to 1. The bit indicating whether the UE reads the MCCH message is also set to 1, and there is no limit on the other bit.
  • the UE does not need to monitor the MCCH modification notification after receiving the paging indication activation, that is, it does not need to receive the third indication information, and the network side does not need to set 2 bits.
  • the modification period corresponding to the first duration can be changed. 2 bits The value of one bit indicating whether the UE reads the MCCH message is set to 1, and there is no limit to the value of the other bit.
  • the UE determines whether to monitor the MCCH according to the paging instruction.
  • the MCCH message includes configuration information of the multicast service.
  • the MCCH message includes the configuration message of the multicast service, for example, the configuration information of the MTCH, such as the G-RNTI and DRX parameters corresponding to the MTCH.
  • the MTCH logical channel carries user data of the broadcast service.
  • MTCH is scheduled through MCCH.
  • the configuration of MTCH is per G-RNTI level, which can also be said to be per MBS service level.
  • gNB schedules service data to multiple UEs at the same time through group RNTI (G-RNTI, Group RNTI).
  • Each G-RNTI can be associated with at least one broadcast service or multicast service.
  • UE1 can receive the user data of the multicast service on the corresponding MTCH according to the MCCH message.
  • the group paging sent to the PO where UE1 is located also indicates that MCCH monitoring will start in the next two MCCH modification periods of the current MCCH modification period, and the group paging sent to the PO where UE2 is located is In addition to the TMGI, the group paging also indicates that MCCH monitoring will start in the next MCCH modification period of the current MCCH modification period. Then UE1 and UE2 can start monitoring the PDCCH corresponding to the MCCH in the common MCCH modification period 3, and then receive the MCCH message, and then receive the service information on the MTCH. Avoid unnecessary power consumption overhead caused by UE1 starting to listen too early.
  • the PO time corresponding to the UE is different, and the time when each UE receives the group paging message and activation indication is inconsistent. This results in the time when the UE monitors the PDCCH and receives the MCCH is inconsistent. Therefore, the MCCHs that different UEs start monitoring before and after may be far away. Generally speaking, to actually send data, all UEs need to be notified of service activation before starting to send data. Therefore, the power consumption caused by prematurely monitoring the MCCH can be avoided by instructing the UE to receive the MCCH message.
  • FIG 11 is a schematic diagram of a communication device 1100 provided by an embodiment of the present application.
  • the device 1100 includes a transceiver unit 1110, which can be used to implement corresponding communication functions.
  • the transceiver unit 1110 may also be called a communication interface or communication unit.
  • the device 1100 may also include a processing unit 1120, which may be used for data processing.
  • a processing unit 1120 which may be used for data processing.
  • the device 1100 also includes a storage unit, which can be used to store instructions and/or data, and the processing unit 1120 can read the instructions and/or data in the storage unit, so that the device implements each of the foregoing method embodiments. Actions performed by terminal equipment or network equipment.
  • the device 1100 may be the first terminal device in the aforementioned embodiment, or may be a component (such as a chip) of the first terminal device.
  • the device 1100 can implement steps or processes corresponding to those performed by the first terminal device in the above method embodiment, wherein the transceiver unit 1110 can be used to perform operations related to the transceiver of the first terminal device in the above method embodiment, and the processing unit 1120 may be used to perform operations related to processing of the first terminal device in the above method embodiment.
  • the device 1100 is used to implement the functions of the first terminal device in the method embodiment shown in FIG. 6 .
  • the processing unit 1120 is configured to determine the first paging opportunity according to the identity of the first terminal device; the processing unit 1120 is also configured to: when no paging message is monitored on the first paging opportunity, Start monitoring the PDCCH corresponding to the MCCH within the first period; the transceiver unit 1110 is configured to receive the first DCI on the PDCCH, and receive the MCCH message according to the first DCI, where the MCCH message includes the configuration information of the multicast service.
  • the first period is the MCCH modification period in which the first paging opportunity occurs; or the first period is the Nth MCCH modification period after the MCCH modification period in which the first paging opportunity occurs, wherein N is a positive integer, and N is Positive integer.
  • the first DCI contains first indication information
  • receiving the MCCH message according to the first DCI includes: when the first indication information indicates reading the MCCH message, receiving the MCCH message according to the first information.
  • the processing unit 1120 is configured to determine to skip M consecutive MCCH modification periods according to the second indication information.
  • the second indication information is carried in the DCI or MCCH message, and M is a positive integer.
  • the device 1100 is used to implement the functions of the first terminal device in the method embodiment shown in FIG. 9 .
  • the transceiver unit 1110 is configured to receive first information on the first PO, the first information indicating that the first terminal device does not receive MCCH messages corresponding to M consecutive MCCH modification periods; the processing unit 1120 is configured to MCCH messages corresponding to the M MCCH modification periods are not received according to the first information.
  • the transceiver unit 1110 is also configured to receive the third indication information, and the processing unit 1120 is configured to read the MCCH message corresponding to the M+1th MCCH modification period according to the third indication information.
  • the device 1100 may be the network device in the previous embodiment, or may be a component of the network device (such as a chip).
  • the device 1100 can implement steps or processes corresponding to those performed by the network device in the above method embodiment, wherein the transceiver unit 1110 can be used to perform operations related to the transceiver of the network device in the above method embodiment, and the processing unit 1120 can be used to perform Operations related to processing of the network device in the above method embodiment.
  • the device 1100 is used to implement the functions of the network device in the method embodiment shown in Figure 6 .
  • the processing unit 1120 is used to determine the first paging opportunity corresponding to the first terminal device; the transceiver unit 1110 is used to start sending the first DCI in the first period corresponding to the first paging opportunity.
  • a DCI is used to schedule MCCH messages when the UE does not monitor the paging message on the first paging opportunity; the first DCI is used to schedule MCCH messages, and the MCCH messages include configuration information of the multicast service.
  • the first period is the MCCH modification period in which the first paging opportunity occurs; or the first period is the Nth MCCH modification period after the MCCH modification period in which the first paging opportunity occurs, wherein N is a positive integer, and N is a positive integer.
  • the first DCI contains first indication information
  • receiving the MCCH message according to the first DCI includes: when the first indication information indicates reading the MCCH message, receiving the MCCH message according to the first information.
  • the transceiver unit 1110 is configured to send second indication information to the first terminal device.
  • the second indication information instructs the first terminal device to skip M consecutive MCCH modification periods.
  • the second indication information is carried in a DCI or MCCH message. middle.
  • the device 1100 is used to implement the functions of the network device in the method embodiment shown in FIG. 9 .
  • the processing unit 1120 is used to determine the first PO corresponding to the first terminal device; the transceiver unit 1110 is used to send the first information to the first terminal device on the first PO, and the first information indicates that the first terminal device does not receive MCCH messages corresponding to M consecutive MCCH modification periods, and the M consecutive MCCH modification periods are M consecutive MCCH modification periods after the MCCH modification period corresponding to the first PO; the transceiver unit 1110 is also used to send MCCH messages after the MCCH modification period corresponding to the first PO.
  • the MCCH message is sent within the M+1th MCCH modification period.
  • the processing unit 1120 is also configured to determine the second PO corresponding to the second terminal device; the transceiver unit 1110 is also configured to send second information to the second terminal device on the second PO, where the second information indicates the second PO.
  • the terminal device does not receive MCCH messages corresponding to N consecutive MCCH modification periods.
  • the N consecutive MCCH modification periods are the N consecutive MCCH modification periods after the second PO corresponding to the MCCH modification period; the second PO corresponds to the N+th MCCH modification period after the second PO.
  • One MCCH modification period is the same as the M+1th MCCH modification period after the MCCH modification period corresponding to the first PO.
  • the transceiving unit 1110 is further configured to send third indication information before sending the MCCH message, and the third indication information instructs the first terminal device to read the MCCH message.
  • the device 1100 here is embodied in the form of a functional unit.
  • the term "unit” as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor, or a group of processors) used to execute one or more software or firmware programs. processor, etc.) and memory, merged logic circuitry, and/or other suitable components to support the described functionality.
  • ASIC application specific integrated circuit
  • processor such as a shared processor, a proprietary processor, or a group of processors
  • memory merged logic circuitry, and/or other suitable components to support the described functionality.
  • the device 1100 can be specifically the first terminal device in the above embodiments, and can be used to execute various processes corresponding to the first terminal device in the above method embodiments and/or or steps, or the device 1100 can be specifically the second terminal device in the above embodiments, and can be used to perform various processes and/or steps corresponding to the second terminal device in the above method embodiments. To avoid duplication, here No longer.
  • the device 1100 of each of the above solutions has the function of realizing the corresponding steps performed by the first terminal device in the above method, or the device 1100 of the above various solutions has the function of realizing the corresponding steps of the second terminal device of the above method.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiving unit. (machine replacement), other units, such as processing units, etc., can be replaced by processors to respectively perform the sending and receiving operations and related processing operations in each method embodiment.
  • transceiver unit 1110 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.
  • the device in Figure 11 may be the network element or device in the aforementioned embodiment, or it may be a chip or chip system, such as a system on chip (SoC).
  • the transceiver unit may be an input-output circuit or a communication interface; the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip. No limitation is made here.
  • Figure 12 is a schematic diagram of another communication device 1200 provided by an embodiment of the present application.
  • the apparatus 1200 includes a processor 1210 coupled with a memory 1220 for storing computer programs or instructions and/or data, and the processor 1210 is used for executing computer programs or instructions stored in the memory 1220, or reading the memory 1220 The stored data is used to execute the methods in the above method embodiments.
  • processors 1210 there are one or more processors 1210 .
  • the memory 1220 is integrated with the processor 1210, or is provided separately.
  • the device 1200 further includes an interface circuit 1230.
  • the interface circuit 1230 is used for receiving and/or transmitting signals.
  • the processor 1210 and the interface circuit 1230 are coupled to each other.
  • the processor 1210 is used to control the interface circuit 1230 to receive and/or send signals.
  • the interface circuit 1230 may be a transceiver or an input-output interface.
  • the processor 1210 is used to implement the functions of the above-mentioned processing unit 1120, and the interface circuit 1230 is used to implement the functions of the above-mentioned transceiver unit 1110.
  • the device 1200 is used to implement the operations performed by the first terminal device in each of the above method embodiments.
  • the processor 1210 is used to execute computer programs or instructions stored in the memory 1220 to implement related operations of the first terminal device in each of the above method embodiments. For example, the method executed by the first terminal device in the embodiment shown in FIG. 6 or FIG. 9 .
  • the device 1200 is used to implement the operations performed by the second terminal device in each of the above method embodiments.
  • the processor 1210 is used to execute computer programs or instructions stored in the memory 1220 to implement related operations of the second terminal device in each of the above method embodiments. For example, the method executed by the second terminal device in the embodiment shown in FIG. 6 or FIG. 9 .
  • the terminal chip implements the functions of the terminal in the above method embodiment.
  • the terminal chip receives information from other modules in the terminal (such as radio frequency modules or antennas), and the information is sent to the terminal by the base station; or, the terminal chip sends information to other modules in the terminal (such as radio frequency modules or antennas), and the terminal chip sends information to other modules in the terminal (such as radio frequency modules or antennas).
  • the information is sent by the terminal to the base station.
  • processors mentioned in the embodiments of this application may be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or application-specific integrated circuit (ASIC).
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache.
  • RAM includes the following forms: 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 (synchlink DRAM, SLDRAM) and direct Memory bus random access memory (direct rambus RAM, DR RAM).
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • FIG. 13 is a schematic diagram of a chip system 1300 provided by an embodiment of the present application.
  • the chip system 1300 (or can also be called a processing system) includes a logic circuit 1310 and an input/output interface 1320.
  • the logic circuit 1310 may be a processing circuit in the chip system 1300 .
  • the logic circuit 1310 can be coupled to the storage unit and call instructions in the storage unit, so that the chip system 1300 can implement the methods and functions of various embodiments of the present application.
  • the input/output interface 1320 can be an input/output circuit in the chip system 1300, which outputs information processed by the chip system 1300, or inputs data or signaling information to be processed into the chip system 1300 for processing.
  • the logic circuit 1310 can send sideline feedback information to the second terminal device through the input/output interface 1320.
  • the side row feedback information may be generated by the logic circuit 1310; or the input/output interface 1320 may input the side row data from the second terminal device to the logic circuit 1310 for processing.
  • the logic circuit 1310 can send side row data to the first terminal device through the input/output interface 1320.
  • the side row data It may be generated by the logic circuit 1310; or the input/output interface 1320 may input the side row feedback information from the first terminal device to the logic circuit 1310 for processing.
  • the chip system 1300 is used to implement the operations performed by the first terminal device in each of the above method embodiments.
  • the logic circuit 1310 is used to implement the processing-related operations performed by the first terminal device in the above method embodiment, such as the processing-related operations performed by the first terminal device in the embodiment shown in Figure 6 or Figure 9;
  • Input/output interface 1320 Used to implement the sending and/or receiving related operations performed by the first terminal device in the above method embodiment, such as the sending and/or receiving related operations performed by the first terminal device in the embodiment shown in Figure 6 or Figure 9 operation.
  • the chip system 1300 is used to implement the operations performed by the second terminal device in each of the above method embodiments.
  • the logic circuit 1310 is used to implement processing-related operations performed by the second terminal device in the above method embodiment, such as processing-related operations performed by the second terminal device in the embodiment shown in Figure 6 or Figure 9;
  • the input/output interface 1320 is used to implement the sending and/or receiving related operations performed by the second terminal device in the above method embodiment, such as the sending performed by the second terminal device in the embodiment shown in Figure 6 or Figure 9 and/or receive related operations.
  • Embodiments of the present application also provide a computer-readable storage medium on which computer instructions for implementing the methods executed by the first terminal device or the second terminal device in each of the above method embodiments are stored.
  • the computer when the computer program is executed by a computer, the computer can implement the method executed by the first terminal device or the second terminal device in each embodiment of the above method.
  • Embodiments of the present application also provide a computer program product that includes instructions that, when executed by a computer, implement the methods executed by the first terminal device or the second terminal device in each of the above method embodiments.
  • An embodiment of the present application also provides a communication system, which includes the first terminal device and the second terminal device in the above embodiments.
  • the system includes a first terminal device and a second terminal device in the embodiment shown in FIG. 6 or FIG. 9 .
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer may be a personal computer, a server, or a network device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated.
  • the available media may be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as DVDs), or semiconductor media (such as solid state disks (SSD)), etc.
  • the aforementioned available media include but Not limited to: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code.

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Abstract

一种通信方法和通信装置。该方法可以包括：第一终端装置根据所述第一终端装置的标识确定第一寻呼时机；在所述第一终端装置在所述第一寻呼时机上未监听到寻呼消息的情况下，所述第一终端装置在第一时段内开始监听多播广播控制信道MCCH对应的物理下行控制信道PDCCH；在所述PDCCH上接收第一下行控制信息DCI，根据所述第一DCI接收MCCH消息，所述MCCH消息包括组播业务的配置信息。这样，通过在PO对应的时段内监听PDCCH，通过PDCCH上接收到的DCI进一步读取MCCH消息，获取组播业务的配置信息，能够有效避免因UE未读取到寻呼消息而错过组播业务激活消息信息，有效提升了组播业务传输的可靠性。

Description

通信方法和通信装置 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种通信方法和通信装置。
背景技术
多播广播业务(Multicast and Broadcast Service，MBS)是面向多个终端设备(User Equipment，UE)的业务，例如直播业务、公共安全业务、批量软件更新业务等。多播广播业务中，组播业务是针对高Qos需求业务设计的，需要针对组播业务进行组管理，可以提供和单播业务相同的QoS等级。具体的对于组播业务，核心网需要管理UE的加入和退出。组播业务提供给RRC连接态UE，需要gNB和CN维护多播业务组对应的UE信息。
如果UE没有正确接收寻呼消息，可能无法正常接收后续的多播广播业务，从而导致多播广播业务传输可靠性降低。
发明内容
本申请提供一种通信方法和通信装置，能够提升多播广播业务传输的可靠性。
第一方面，提供了一种通信方法，该方法可以由终端装置执行，或者，也可以由终端装置的组成部件(例如芯片或者电路)执行，本申请对此不作限定。为了便于描述，下面以由第一终端装置执行为例进行说明。
该方法可以包括：第一终端装置根据所述第一终端装置的标识确定第一寻呼时机；在所述第一终端装置在所述第一寻呼时机上未监听到寻呼消息的情况下，所述第一终端装置在第一时段内开始监听多播广播控制信道MCCH对应的物理下行控制信道PDCCH；在所述PDCCH上接收第一下行控制信息DCI，根据所述第一DCI接收MCCH消息，所述MCCH消息包括组播业务的配置信息。
基于上述技术方案，当第一终端装置在对应的PO上无法检测到寻呼消息时，由于不确定是网络侧没有发还是因为一些异常发生了漏检或者错检，那么在PO对应的时段内监听PDCCH，通过PDCCH上接收到的DCI进一步读取MCCH消息，获取组播业务的配置信息，能够有效避免因UE未读取到寻呼消息而错过组播业务激活消息信息，有效提升了组播业务传输的可靠性。
结合第一方面，在第一方面的某些实现方式中，所述第一时段为所述第一寻呼时机所处的MCCH修改周期；或者所述第一时段为所述第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，其中N为正整数，且N为正整数。
基于上述技术方案，第一终端装置可以准确地在固定时段开始监听MCCH对应的PDCCH。
结合第一方面，在第一方面的某些实现方式中，所述第一DCI中包含第一指示信息，根据所述第一DCI接收MCCH消息包括：当所述第一指示信息指示读取MCCH消息时，根据所述第一信息接收MCCH消息。
结合第一方面，在第一方面的某些实现方式中，所述第一指示信息包含第一比特，所述 第一比特取值为第一取值时，所述第一指示信息指示第一终端装置读取MCCH。
结合第一方面，在第一方面的某些实现方式中，所述第一终端装置根据所述第二指示信息确定跳过连续的M个MCCH修改周期，所述第二指示信息承载在DCI或所述MCCH消息中，M是正整数。
第二方面，提供了一种通信方法，该方法可以由网络设备执行，或者，也可以由网络设备的组成部件(例如芯片或者电路)执行，本申请对此不作限定。为了便于描述，下面以由第一终端装置执行为例进行说明。
该方法可以包括：网络设备确定第一终端装置对应的第一寻呼时机；所述网络设备在所述第一寻呼时机对应的第一时段开始发第一下行控制信息DCI，所述第一DCI用于第一终端装置在第一寻呼时机上未监听到寻呼消息时调度多播广播控制信道MCCH消息；所述网络设备所述第一DCI用于调度MCCH消息，所述MCCH消息包括组播业务的配置信息。
基于上述技术方案，通过在第一PO对应的时段均发送MCCH消息，能够有效避免第一终端装置因漏检或者寻呼消息传输失败从而导致的第一终端装置组播业务接收失败。
结合第二方面，在第二方面的某些实现方式中，所述第一时段为所述第一寻呼时机所处的MCCH修改周期；或者所述第一时段为所述第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，其中N为正整数，且N为正整数。
结合第二方面，在第二方面的某些实现方式中，所述第一DCI中包含第一指示信息，第一指示信息包含第一比特，所述第一比特取值为第一取值时，所述第一指示信息指示第一终端装置读取MCCH消息时。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：向第一终端装置发送第二指示信息，第二指示信息指示所述第一终端装置跳过连续的M个MCCH修改周期，所述第二指示信息承载在DCI或所述MCCH消息中。
第三方面，提供了一种通信方法，该方法可以由网络设备执行，或者，也可以由网络设备的组成部件(例如芯片或者电路)执行，本申请对此不作限定。为了便于描述，下面以由网络设备执行为例进行说明。
该方法可以包括：网络设备确定第一终端装置对应的第一寻呼时机PO；所述网络设备在所述第一寻呼时机PO上向所述第一终端装置发送第一信息，所述第一信息指示所述第一终端装置不接收连续M个多播广播控制信道MCCH修改周期对应的MCCH消息，所述连续M个MCCH修改周期为第一PO对应MCCH修改周期后的连续M个MCCH修改周期；所述网络设备在所述第一PO对应MCCH修改周期后的第M+1个MCCH修改周期内发送MCCH消息。
基于上述技术方案，通过指示第一终端装置跳过M个MCCH修改周期，降低了终端装置持续接收MCCH消息的功耗，提升了MCCH消息接收的效率。
结合第三方面，在第三方面的某些实现方式中，方法还包括：所述网络设备确定第二终端装置对应的第二PO；所述网络设备在第二PO上向第二终端装置发送第二信息，所述第二信息指示第二终端装置不接收连续N个MCCH修改周期对应的MCCH消息，所述连续N个MCCH修改周期为第二PO对应MCCH修改周期后的连续N个MCCH修改周期；所述第二 PO对应MCCH修改周期后的第N+1个MCCH修改周期与所述第一PO对应MCCH修改周期后的第M+1个MCCH修改周期相同。
基于上述技术方案，通过第二PO对应的MCCH修改周期后的第N+1个MCCH周期与第一PO对应的MCCH修改周期后的第M+1个MCCH修改周期相同，能够使得对于不同PO但是需要接收相同组播业务的UE，可以在相同的时期开始接收MCCH消息，避免PO较早的UE过早监听并接收MCCH消息导致的功耗。
结合第三方面，在第三方面的某些实现方式中，方法还包括：在发送所述MCCH消息之前，所述网络设备发送第三指示信息，所述第三指示信息指示所述第一终端装置读取所述MCCH消息。
结合第三方面，在第三方面的某些实现方式中，所述第三指示信息包含第二比特，所述第二比特取值为第一取值时，所述第三指示信息指示UE读取MCCH。
第三方面及各个可能的设计的有益效果可以参考第一方面相关的描述，在此不予赘述。
第四方面，提供了一种通信方法，该方法可以由终端装置执行，或者，也可以由终端装置的组成部件(例如芯片或者电路)执行，本申请对此不作限定。为了便于描述，下面以由第二终端装置执行为例进行说明。
该方法可以包括：第一终端装置在第一寻呼时机PO上接收到第一信息，所述第一信息指示所述第一终端装置不接收连续的M个多播广播控制信道MCCH修改周期对应的MCCH消息；所述第一终端装置根据第一信息不接收所述M个MCCH修改周期对应的MCCH消息。
结合第四方面，在第四方面的某些实现方式中，所述第一终端装置接收到第三指示信息，根据第三指示信息读取第M+1个MCCH修改周期对应的MCCH消息。
第四方面及各个可能的设计的有益效果可以参考第三方面相关的描述，在此不予赘述。
第五方面，提供一种通信装置，该装置用于执行上述第一方面至第五方面任一种可能实现方式中的方法。具体地，该装置可以包括用于执行第一方面至第五方面任一种可能实现方式中的方法的单元和/或模块，如处理单元和/或通信单元。
在一种实现方式中，该装置为终端设备。当该装置为终端设备时，通信单元可以是收发器，或，输入/输出接口；处理单元可以是至少一个处理器。可选地，收发器可以为收发电路。可选地，输入/输出接口可以为输入/输出电路。
在另一种实现方式中，该装置为用于终端设备的芯片、芯片***或电路。当该装置为用于终端设备的芯片、芯片***或电路时，通信单元可以是该芯片、芯片***或电路上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等；处理单元可以是至少一个处理器、处理电路或逻辑电路等。
第六方面，提供一种通信装置，该装置包括：至少一个处理器，用于执行存储器存储的计算机程序或指令，以执行上述第一方面至第五方面任一种可能实现方式中的方法。可选地，该装置还包括存储器，用于存储的计算机程序或指令。可选地，该装置还包括通信接口，处理器通过通信接口读取存储器存储的计算机程序或指令。
在一种实现方式中，该装置为终端设备。
在另一种实现方式中，该装置为用于终端设备的芯片、芯片***或电路。
第七方面，本申请提供一种处理器，用于执行上述第一方面至第五方面提供的方法。
对于处理器所涉及的发送和获取/接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则可以理解为处理器输出和接收、输入等操作， 也可以理解为由射频电路和天线所进行的发送和接收操作，本申请对此不做限定。
第八方面，提供一种计算机可读存储介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码包括用于执行上述第一方面至第五方面任一种可能实现方式中的方法。
第九方面，提供一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行上述第一方面至第五方面任一种可能实现方式中的方法。
第十方面，提供一种通信***，包括至少一个前述的第一终端装置和网络设备。
附图说明
图1是本申请实施例提供的一种通信***示意图；
图2是MBS业务传输过程的示意图；
图3是组播业务传输过程的示意图；
图4是MCCH具体发送机制的示意图；
图5是业务去激活流程示意图；
图6是本申请提出的一种通信方法的示意性流程图；
图7是MCCH对应PDCCH监听时机示意图；
图8是多UE寻呼时机的示意图；
图9是本申请提出的另一种通信方法的示意性流程图；
图10是多UE场景下MCCH消息发送时机示意图；
图11是本申请实施例提供的一种通信装置1100的示意图。
图12是本申请实施例提供的另一种通信装置1200的示意图。
图13是本申请实施例提供的芯片***1300的示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
图1是本申请的实施例应用的通信***1000的架构示意图。如图1所示，该通信***包括无线接入网100和核心网200，可选的，通信***1000还可以包括互联网300。其中，无线接入网100可以包括至少一个无线接入网设备(如图1中的110a和110b)，还可以包括至少一个终端(如图1中的120a-120j)。终端通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端和终端之间以及无线接入网设备和无线接入网设备之间可以通过有线或无线的方式相互连接。图1只是示意图，该通信***中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图1中未画出。
其中，核心网设备也可以称为核心网装置，可以包括以下网元中的一个或多个：统一数据管理(unified data management，UDM)网元、应用功能(application function，AF)网元、策略控制功能(policy control function，PCF)网元、网络开放功能(network exposure function，NEF)网元、接入与移动性管理功能(access and mobility management function，AMF)网元、会话管理功能(session management function，SMF)网元、用户面功能(user plane function，UPF)网元等。上述各网元也可称为装置、设备或实体，本申请并不在此限制，例如，UDM网元也可称为UDM装置、UDM设备或UDM实体。为便于描述，下文中将采用简称的方式 进行，例如“AMF网元”被简称为“AMF”。
无线接入网设备可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、第五代(5th generation，5G)移动通信***中的下一代基站(next generation NodeB，gNB)、第六代(6th generation，6G)移动通信***中的下一代基站、未来移动通信***中的基站或WiFi***中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)。这里的CU完成基站的无线资源控制协议和分组数据汇聚层协议(packet data convergence protocol，PDCP)的功能，还可以完成业务数据适配协议(service data adaptation protocol，SDAP)的功能；DU完成基站的无线链路控制层和介质访问控制(medium access control，MAC)层的功能，还可以完成部分物理层或全部物理层的功能，有关上述各个协议层的具体描述，可以参考第三代合作伙伴计划(3rd generation partnership project，3GPP)的相关技术规范。无线接入网设备可以是宏基站(如图1中的110a)，也可以是微基站或室内站(如图1中的110b)，还可以是中继节点或施主节点等。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。无线接入网设备也可以称为网络装置。为了便于描述，下文以基站作为无线接入网设备的例子进行描述。
终端也可以称为终端设备、终端装置、用户设备(user equipment，UE)、移动台、移动终端等。终端可以广泛应用于各种场景，例如，设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)通信、机器类通信(machine-type communication，MTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端可以是手机、平板电脑、带无线收发功能的电脑、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备等。本申请的实施例对终端所采用的具体技术和具体设备形态不做限定。
基站和终端可以是固定位置的，也可以是可移动的。基站和终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在飞机、气球和人造卫星上。本申请的实施例对基站和终端的应用场景不做限定。
基站和终端的角色可以是相对的，例如，图1中的直升机或无人机120i可以被配置成移动基站，对于那些通过120i接入到无线接入网100的终端120j来说，终端120i是基站；但对于基站110a来说，120i是终端，即110a与120i之间是通过无线空口协议进行通信的。当然，110a与120i之间也可以是通过基站与基站之间的接口协议进行通信的，此时，相对于110a来说，120i也是基站。因此，基站和终端都可以统一称为通信装置，图1中的110a和110b可以称为具有基站功能的通信装置，图1中的120a-120j可以称为具有终端功能的通信装置。
基站和终端之间、基站和基站之间、终端和终端之间可以通过授权频谱进行通信，也可以通过免授权频谱进行通信，也可以同时通过授权频谱和免授权频谱进行通信；可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。
在本申请的实施例中，基站的功能也可以由基站中的模块(如芯片)来执行，也可以由包含有基站功能的控制子***来执行。这里的包含有基站功能的控制子***可以是智能电网、工业控制、智能交通、智慧城市等上述应用场景中的控制中心。终端的功能也可以由终端中 的模块(如芯片或调制解调器)来执行，也可以由包含有终端功能的装置来执行。
本申请实施例提供的技术方案可以应用于通信设备间的无线通信。通信设备间的无线通信可以包括：网络设备和终端间的无线通信、网络设备和网络设备间的无线通信以及终端设备和终端设备间的无线通信。其中，在本申请实施例中，术语“无线通信”还可以简称为“通信”，术语“通信”还可以描述为“数据传输”、“信息传输”或“传输”。
还应理解，本申请中“终端设备”也称“终端装置”、“终端”等等，“网络设备”也称“网络装置”、“网络侧”等等，“核心网设备”也称“核心网装置”、“核心网”等等。
为了便于理解，提前对相关概念做一简单解释。
1.多播广播业务(multicast and broadcast service，MBS)：是面向多个终端设备的业务，例如直播业务、公共安全业务、批量软件更新业务等。如图2所示，MBS业务来自数据服务器，首先数据服务器将MBS数据发送给核心网装置，然后核心网设备将MBS数据发送给基站，最后基站将MBS数据发送给接收MBS业务的至少一个UE。MBS包括组播业务和广播业务。
从核心网向基站发送的时候，MBS业务通过一个公共的传输通道MBS会话进行传输，每个MBS会话中可以包含至少一个MBS服务质量(quality of service，QoS)流。而从基站向UE发送的时候，数据包通过MBS无线承载传输，对于一个MBS无线承载来说有两种传输模式：第一种可以采用点到多点(point to multi-point，PTM)传输方式，第二种可以采用点到点(point to point，PTP)传输方式。
2.组播(multicast)业务：组播业务是针对高QoS需求业务设计的，组播业务可以提供和单播业务相同的QoS等级。需要针对组播业务进行组管理，具体地，如图3中的(a)所示，对于组播业务，核心网需要管理UE的加入和退出。对于核心网和基站之间的传输依托于协议数据单元会话(protocol data unit session，PDU session)，引入MBS QoS流(flow)。无线接入网装置(radio access network，RAN)支持PTP和PTM传输方式向UE发送数据，并且支持由RAN控制的PTP和PTM之间的动态切换。
其中，接入网装置和终端装置具有对等的协议栈结构，以用于相互通信。如图3中的(b)所示，用户面协议栈结构可以包括RRC层、业务数据适配(service data adaptation protocol，SDAP)层、PDCP层、无线链路控制(Radio Link Control，RLC)层、MAC层和物理(physical，PHY)层等。其中，物理层位于最低层(层一)，MAC层、RLC层、PDCP层以及SDAP层属于第二层(层二)，RRC层属于第三层(层三)。对于MBS传输的用户面协议栈来说，数据按照图中箭头所示方向进行传输(对于MBS业务来说，传输方向是从基站到UE)，数据首先到达基站的SDAP层，经过SDAP层的映射以后，传输到相应的PDCP实体，经过基站的PDCP层的处理以后传输到RLC层和MAC层，经过相应的处理之后，从物理层发送出去，通过空口传输给UE侧。然后UE侧的各个协议层按照与基站相反的处理顺序对数据包依次进行对应的处理。在基站和UE侧可以形象地将各层对数据包的处理结合起来称为无线承载，对于无线承载里的每个数据，都需要经过各个层的处理，每个层都有相应的功能实体来执行相应的功能。每个无线承载配置里面会包含一个PDCP实体，同时每个无线承载配置会关联至少一个RLC实体，并且每个RLC实体对应一个逻辑信道。
对于MBS，用户面数据由多播无线承载(MBS Radio Bearer，MRB)承载。具体的，MRB包括以下三种类型：PTP only MRB，PTM only MRB，和split MRB(PTP MRB+PTM MRB)。如图3中的(c)所示，PTP only MRB关联一个PTP RLC实体，PTM only MRB关联一个PTM RLC实体，split MRB关联一个PTM RLC实体和一个PTP RLC实体。其中，PTM RLC对多 个UE是相同的，多个UE用相同的组无线网络临时标识(group radio network temporary identifier，g-RNTI)解扰，PTP RLC是对于各个UE独立的，每个UE用各自的小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)监听。
应理解，本申请实施例中的G-RNTI和g-RNTI可以互相替换，C-RNTI和c-RNTI可以互相替换，本申请实施例对此不作限定。
组播业务只能提供给无线资源控制(radio resource control，RRC)连接态下的UE，需要接入网设备和核心网设备维护多播广播业务组对应的UE信息。组播业务还支持由核心网触发的MBS会话(session)的去激活或者激活，UE不感知业务状态。可选地，组播业务中的通信双方可以在限定的区域范围内发送数据，或者在不同区域发送不同内容。
3.多播广播控制信道和多播广播业务信道：NR MBS的广播技术中引入了两种逻辑信道，多播广播控制信道(MBS control channel，MCCH)和多播广播业务信道(MBS traffic channel，MTCH)，其中MCCH用于传输控制信息，包含MTCH的配置信息，比如MTCH对应的g-RNTI以及DRX参数。MCCH以周期的方式进行发送。MTCH逻辑信道用于承载广播业务的用户数据。通过MCCH调度MTCH。MTCH的配置为每(per)g-RNTI级别，也可以说是per MBS service级别。其中，基站通过g-RNTI同时向多个UE调度业务数据，每个g-RNTI可以关联至少一个广播业务。
应理解，在不同通信***中，上述信道可以对应不同的名称。例如，在***(4th generation，4G)通信***中，多播广播业务控制信道可以为单小区多播广播业务控制信道(single cell MCCH，SC-MCCH)。再例如，在5G通信***中，多播广播业务控制信道可以为MC-MCCH。在未来技术发展过程中，与该多播广播业务控制信道功能类似的信道还可能有其他称谓，或者，在不同通信环境、通信场景或者通信技术中，相同功能的信道也可能有不同称谓，但是功能类似或相同的信道在不同***中的不同名称，不对信道内容及功能构成限定。本申请中的多播广播控制信道可以用于传输控制信息，多播广播业务信道可以用于传输用户数据。
如无特殊说明，本申请中以MCCH表示多播广播业务控制信道，以MTCH表示多播广播业务信道。还应理解，本申请其他英文简称与此类似，不再赘述。
4.多播广播控制信道修改通知(MCCH change notification)：如图4所示，MCCH在每个修改周期(Modification period，MP)中重复发送，图中包括重复周期(repetition period，RP)。在一个MP中，MCCH的内容相同，当不同的MP的MCCH发生变化时，网络设备发送包含修改通知的PDCCH，修改通知为MCCH change notification。当UE在PDCCH上检测到MCCH change Notification对应的字段，比如是2比特，即认为检测到了修改通知，UE重新获取MCCH。UE在获取MCCH时，需要检测MCCH-RNTI加扰的PDCCH，以获取MCCH的调度信息。其中，MCCH修改通知中的第一比特指示MCCH修改的原因是会话开始，MCCH修改通知中的第二比特指示MCCH修改的原因是会话修改、会话停止或邻小区列表更新。
5.RRC状态：NR中的RRC状态包括三种：RRC空闲态(RRC_IDLE)，RRC非活跃态(RRC_INACTIVE)，RRC连接态(RRC_CONNECTED)。下面对三种RRC状态进行简单介绍。
①RRC_CONNECTED(RRC连接态)：RAN有UE的上下文，UE和RAN有信令连接。UE可接收RAN下发的控制UE进行数据传输、切换、通知UE相关调度信息的消息及***消息，且RAN可接收UE反馈的信道质量信息。
②RRC_INACTIVE(RRC非活跃态)：RAN和核心网之间保持连接，空口没有分配资源， 能够使业务快速恢复，提升时延敏感应用体验，另外，处于非活跃态的用户省电效果也能逼近空闲态，延长手机续航时间。
③RRC_IDLE(RRC空闲态)：RAN没有UE的上下文，UE和RAN没有信令连接，在此状态中，UE可接收***消息和寻呼消息，进行小区选择和重选。当UE因为某个目的(业务请求，位置更新，寻呼等)需要和网络建立连接，则触发RRC连接建立，RRC连接建立后，则进入RRC连接态。
应理解，本申请中的RRC非连接态可以是RRC空闲态和/或RRC非活跃态。本申请中的非连接态可以替换为RRC空闲态和/或RRC非活跃态。
6.多播会话标识(MBS session ID)：用于标识业务，比如一个多播会话标识可以关联一个业务。多播会话标识可以是临时多播组标识(temporary multicast group identifier，TMGI)。
MBS会话去激活过程适用于组播。MBS会话去激活流程由多播会话管理功能(MB session management function，MB-SMF)网元触发，当MB-SMF在一段时间内没有下行数据可传输的情况下收到用户面功能(MB user plane function，MB-UPF)网元的通知时，或者当MB-SMF直接收到应用层功能(application function，AF)网元或通过网络开放功能(network exposure function，NEF)转发的请求时，MBS Session去激活流程用于去激活5G接入网(NG-RAN)节点的MBS数据资源。在5G核心网(5GC)的触发下，RAN释放组播会话的无线资源，停止向UE传输组播会话数据，基站可以对UE进行RRC连接释放或者不释放，并没有通知到UE。组播会话状态从激活(active)状态转换为去激活(inactive)状态。换句话说，去激活态可以是UE当前业务处于去激活状态，或者，关于当前业务的会话(session)处于去激活态，在UE的相关业务处于去激活态时，基站可以指示UE释放该业务。
MBS释放流程由核心网触发，当核心网(core network，CN)N决定要释放一个组播业务，或者将一个UE从组播业务中删除，可以执行如上流程。如果CN判断存在CM-IDLE UE，CN会发起paging，使UE进入连接态，以执行后续的释放流程。具体地，发送的消息可以是组寻呼消息(当基站支持组播)，可以是单播的paging消息(当基站不支持组播，通过单播方式提供组播业务)。
应理解，本申请中未特殊说明的情况下，多播广播业务的状态也可以理解为多播广播会话的状态，释放多播广播会话业务也可以理解为释放多播广播会话，业务可以理解为多播广播业务。也就是说，本申请中如无特殊说明，“业务”和“会话”可以互相替换。
MBS会话激活过程仅适用于组播。MBS会话激活过程由MB-SMF触发，当MB-SMF收到MB-UPF关于MBS下行数据的通知时，或者当MB-SMF直接收到AF或通过NEF转发的请求时，触发MBS Session激活流程。MBS Session激活流程用于激活NG-RAN节点的MBS数据资源，比如建立组播会话的无线资源，向UE传输组播会话数据。此外，加入组播会话的处于连接管理空闲(connection management-IDLE，CM)-IDLE)状态和CM-CONNECTED+RRC Inactive状态的UE会被寻呼(paging)，可以由MB-UPF的AF请求或数据通知触发这些UE的激活流程，组播会话状态从去激活状态转换为激活状态。图中AMF用于寻呼处于CM-IDLE状态的UE的消息可以是组寻呼消息(当基站支持组播)，可以是单播的寻呼消息(当基站不支持组播，通过单播方式提供组播业务)。在AMF向RAN发送多播会话激活请求(multicast session activation request)消息时，可以触发RAN的寻呼流程。
本申请中提及的多播广播控制信道或者MCCH是用于组播业务的，具体的可以是用于承载组播业务的配置信息的，组播业务的配置信息可以通过MCCH消息进行发送。对于组播业务来说多播广播控制信道可以与广播业务使用的多播广播控制信道共用，也可以是专门用于承载组播业务的配置信息的信道。本申请中不限制多播广播控制信道或者MCCH的定义方法或者名称，可以替换为其他的表述或者名称，可以替换为其他的用于包含组播业务配置信息的信道。
应理解，本申请中的监听MCCH或读取MCCH指的是监听MCCH对应的PDCCH，或者使用MCCH对应的RNTI(比如MCCH-RNTI)监听PDCCH，或者使用MCCH对应的RNTI(比如MCCH-RNTI)解扰DCI和/或获取MCCH消息或者MCCH对应的PDSCH的调度信息。
类似的，多播广播业务信道或多播广播传输信道或MTCH是用于组播业务的，具体的可以是用于承载组播业务的数据的，组播业务的数据可以通过MTCH进行承载。对于组播业务来说，多播广播业务/传输信道和可以与广播业务使用的多播广播业务/传输信道共用，也可以是专门用于承载组播业务的数据的信道。本申请中不限制多播广播业务/传输信道或者MTCH的定义方法或者名称，可以替换为其他的表述或者名称，可以替换为其他的用于包含组播业务数据的信道。
应理解，本申请中的监听MTCH或读取MTCH指的是监听MTCH对应的PDCCH，或者使用MTCH对应的RNTI(比如G-RNTI)监听PDCCH，或者使用MTCH对应的RNTI(比如G-RNTI)解扰DCI和/或获取MTCH对应的PDSCH的调度信息。
非连接态接收组播业务的背景下，UE如果被释放到非连接态接收组播业务那么UE要一直用G-RNTI监听PDCCH以读取业务数据。结合业务去激活场景，如图5所示，如果核心网向基站触发了业务去激活流程，网络设备将停止发送数据很长的一段时间。当网络通过非连接态模式提供组播业务场景下，如果业务去激活需要通知UE对应业务的状态。
1>当组播或广播业务去激活时，如果基站正在提供非连接态模式发送业务，指示相关业务去激活。一种可能的方式中，基站通过MCCH指示业务去激活。
2>当UE读到正在通过非连接态接收的组播业务的去激活指示信息后，UE可能会有以下选择：
Option1：UE停止监听MTCH，继续监听MCCH对应的PDCCH，通过MCCH获取业务何时激活；
Option2：UE停止监听MTCH，继续监听MCCH对应的PDCCH，持续监听paging；
Option3：UE停止监听MTCH和MCCH，持续监听paging。
3>当UE收到MCCH和或paging中指示业务激活时开始监听MTCH。特别的，对于option3
如果在paging中监听到业务激活后需要读取MCCH获取MTCH配置信息。
基于上述方案，当业务激活时UE接收到paging后触发监听MCCH和MTCH开始接收数据。但是UE接收paging有失败或者漏检可能，由于开销问题，例如，寻呼消息不一定一直有资源都能发TMGI，网络侧很有可能不会为了可靠性重复发paging，一旦错过/漏检/解错激活指示后对于inactive收组播的UE造成的影响相比于普通UE错过/漏检/解错paging更为严重，普通UE没收到paging没有进入连接态，基站和核心网可以感知到，可以再次发起寻呼，但是非连接态收组播的UE一旦错过，网络也不感知UE没收到业务激活通知。一旦业务去激活后很长一段时间没有执行去激活再激活的操作，UE在这段时间内都一直不会接收业务，会造成漏收业务。因此如何保证UE错过paging后仍能正常开始接收非连接态业务是亟待解决的问题。
本申请提供一种通信方法，当UE在自己对应的PO上未监听到寻呼消息的时候，UE监听MCCH对应的PDCCH，避免UE错过业务相关消息，从而提升了业务传输可靠性。可参见图6。
在以下实施例中，第一终端装置也可简称为UE1。
S301.第一终端装置确定第一寻呼时机。
第一终端装置根据其标识确定第一PO。寻呼时刻也是包含寻呼帧(paging frame，PF)和寻呼时机(paging occasion，PO)两级设置。PF，和Po是根据终端标识计算得到的。终端的标识可以由5G-S-TMSI mod 1024得到。
S302.第一终端装置在第一时段内开始监听MCCH对应的PDCCH。
可选的，第一终端装置采用第一标识监听PDCCH，第一标识为MCCH对应的RNTI，例如为MCCH-RNTI。
可选的，当第一终端装置在第一PO上未监听到寻呼消息的情况下，第一终端装置在第一时段内开始监听PDCCH。
在第一时段内开始监听PDCCH可以理解为从第一时段开始时刻起监听PDCCH。
具体的，UE1在第一PO未监听到寻呼消息就在第一时段监听MCCH对应的PDCCH的规则可以是协议固定的，即UE1一直按照该规则执行；也可以是网络配置给UE1的，比如在业务去激活时指示的，例如MCCH消息中包含相关的指示信息指示该规则；或者在RRC释放到非连接态接收对应的业务时配置的，或者是在***消息中广播UE是否需要执行此行为。比如携带一个指示信息用于指示UE1在第一PO未监听到寻呼消息就在第一时段监听MCCH对应的PDCCH，其中指示信息可以为1比特或者为一个字段设置为True,当存在此指示信息则视为需要执行此行为。另外还可以配置固定的监听时刻的信息，即通过信令配置的第一时段，比如配置一个偏置offset。
其中，第一时段为第一寻呼时机所处的MCCH修改周期；或者第一时段为第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期。其中，N为正整数。第一时段为第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，例如，第一时段为第一寻呼时机所处的MCCH修改周期后的第一个MCCH修改周期，或者第若干个MCCH修改周期。
当第一时段为第一寻呼时机所处的MCCH修改周期时，第一PO结束后该MCCH修改周期内至少还有一个完整的MCCH重复周期。
示例性的，如图7所示，第一寻呼时机所处的MCCH修改周期为MCCH周期1，第一时段可以为MCCH周期1，或者第一时段为第一寻呼时机所处的MCCH修改周期的后一个MCCH修改周期，例如MCCH修改周期2。
当第一时段为第一PO所处的MCCH修改周期后的第N个MCCH修改周期时，该N可以为基站配置的，例如，通过RRC高层信令配置，或者通过DCI信息配置，或者MAC CE信令配置。或者该N为预定义的参数。
对于UE1来说，当UE1在对应的PO上无法检测到寻呼消息时，由于不确定是网络侧没有发还是因为一些异常发生了漏检或者错检，那么在PO对应的时段内监听PDCCH，通过PDCCH上接收到的DCI进一步读取MCCH消息，获取组播业务的配置信息，能够有效避免因UE1未读取到寻呼消息而错过组播业务激活信息，有效提升了组播业务传输的可靠性。
举例来说，第一终端装置在第一PO上未监听到寻呼消息的情况下，第一终端装置在第一PO对应的MCCH修改周期或者第一PO对应的MCCH修改周期后第N个MCCH修改周期内开始监听PDCCH。参考图4，第一PO所处的MCCH修改周期为MCCH周期1，第一PO所处的MCCH修改周期后的第一个MCCH修改周期为MCCH周期2，第一PO所处的MCCH修改周期后的第二个MCCH修改周期为MCCH周期3，可以依次类推。
可选的，当第一终端装置在第一PO上监听到寻呼消息的情况下，可以具体分为以下几种情况：
(1)第一终端装置在第一PO上接收到其他UE的寻呼消息，或者寻呼消息中包括的业务标识为第一终端装置其他不感兴趣的组播业务标识，则第一终端装置无其他特别动作。
(2)第一终端装置在第一PO上接收到的寻呼消息包含第一终端装置的标识信息，则第一终端装置进入连接态进行业务的接收。
(3)第一终端装置在第一PO上接收到的寻呼消息包含自己感兴趣的组播业务的业务激活信息，比如寻呼消息中包含TMGI 1以及业务激活指示，其中，TMGI 1为UE1期望接收的组播业务的标识，则第一终端装置根据寻呼消息在下一MCCH周期读取MCCH消息。
S303.网络设备在第一寻呼时机对应的第一时段开始发送第一DCI，第一DCI用于调度MCCH消息，比如当第一终端装置在第一寻呼时机上未监听到寻呼时机时调度MCCH消息。
在此之前，网络设备确定第一终端装置对应的第一寻呼时机，具体的，根据第一终端装置的标识确定其对应的第一寻呼时机。
该303步骤与302步骤在时间上的先后顺序不限制。
对于网络设备来说，通过在第一PO对应的时段均发送MCCH消息，能够有效避免UE1因漏检或者寻呼消息传输失败从而导致后续UE1继续接收组播业务失败。
S304.第一终端装置在PDCCH上接收第一DCI，并根据第一DCI接收MCCH消息，该MCCH消息包括组播业务的配置信息。
可选的，第一DCI中包含第一指示信息，根据第一DCI接收MCCH消息具体包括：当所述第一指示信息指示第一终端装置读取MCCH消息时，第一终端装置根据第一DCI接收MCCH消息。
可选的，第一DCI调度MCCH消息所在的PDSCH，因此当UE1接收到第一DCI后，在DCI指示的时频位置接收MCCH消息。该MCCH消息中包括组播业务的配置信息。
具体的，UE1根据第一DCI中第一指示信息的取值状态或者根据第一DCI中是否包含第一指示信息确定是否接收第一DCI调度的MCCH消息。
可以理解，MCCH消息承载在PDSCH中，第一DCI调度该PDSCH。
第一指示信息包含第一比特，所述第一比特取值为第一取值时，所述第一指示信息指示 UE读取MCCH。第一取值为1，或者第一取值为0。例如，当第一比特取值为1时，UE1根据该取值为1的bit在MCCH信道上接收MCCH消息。具体MCCH消息所在的时频资源位置通过DCI中其他信息指示，例如第一DCI还包括时频资源指示信息，指示MCCH消息的在PDSCH中的时频位置。
第一指示信息除了通过显示指示的方式指示是否读取MCCH之外，还可以通过隐式指示的方式完成指示。例如，当第一DCI中包含第一指示信息时，指示读取MCCH消息，当第一DCI中不包含第一指示信息时，指示不读取MCCH消息。第一指示信息可以表现为“true”。
可选的，第一指示信息包括两个比特，比如第一指示信息包括2bit的字段“MCCH change notification”，该两bit中的一个bit的取值用于指示UE是否读取MCCH消息。例如，该两个比特中的第一个bit或第二个bit取值为第一取值，指示读取MCCH消息，取值为第二取值时，指示不需要读取MCCH消息。其中，第一取值为1，第二取值为0，或者，也可以反过来。
MCCH消息中包括组播业务的配置消息，例如包含MTCH的配置信息，比如MTCH对应的G-RNTI以及DRX参数。MTCH逻辑信道承载广播业务的用户数据。通过MCCH调度MTCH。MTCH的配置可以为G-RNTI级别，也可说是MBS业务级别。其中，gNB通过组RNTI(G-RNTI,Group RNTI)来同时向多个UE调度业务数据，每个G-RNTI可以关联至少一个广播业务或组播业务。
因此，UE1可以根据MCCH消息在对应的MTCH接收组播业务的用户数据。
可选的，该方法还可以包括：
步骤S305第一终端装置接收来自网络设备的第二指示信息。网络设备向第一终端装置发送第二指示信息。
第一终端装置根据第二指示信息确定跳过连续的M个MCCH修改周期，所述第二指示信息承载在DCI或所述MCCH消息中，M是正整数。
此处的跳过连续的M个MCCH修改周期可以理解为UE1在连续的M个MCCH修改周期内都不接收MCCH消息。
由于UE1默认开始监听MCCH对应的PDCCH后，除非被指示或者不再对业务感兴趣可能会持续监听，因此可选的，向UE1发送第二指示信息，指示UE1不接收连续的M个MCCH修改周期内的MCCH消息。该第二指示信息可以携带在DCI4_0或者MCCH消息中。第二指示信息可以指示相同业务的MCCH消息可以在几个MCCH修改周期之后再读，用于跳过连续的MCCH消息。
可选的，当多个组播业务都存在此指示时，只要有业务指示了在某个MCCH需要监听MCCH对应的PDCCH则UE1就需要监听，不管其他业务指示有没有跳过。比如UE1有两个组播业务，其中组播业务1的DCI 1中包含的第二指示信息为00001，组播业务2的DCI2中包含的第二指示信息为00100，其中DCI 1中的比特串00001的含义为跳过连续的4个MCCH修改周期，从第5个MCCH修改周期开始读取，DCI2中的比特串00100的含义为跳过连续的2个MCCH修改周期，从第3个MCCH修改周期开始读取，则UE1根据该两个DCI的指示跳过接下来的两个MCCH修改周期，从第三个修改周期到第五个修改周期都要接收MCCH消息。或者，网络设备也可以直接指示跳过两个，不按照具体的业务来指示。
通过这种指示，当MCCH消息重复时，终端装置可以跳过部分重复的MCCH消息，从而降低了终端装置的一直接收相同的信令带来的功耗开销。
对于不同的终端装置来说，其对应的PO可能不同，网络在发送的多播/广播数据之前， 需要考虑在所有接收该业务数据的UE的PO之后，才能开始发送MTCH或MTCH+MCCH。如图8所示，当UE1和UE2的DRX周期均为128ms,UE3和UE4的DRX周期为256ms,MCCH修改周期为32ms,UE收到paging指示对应的组播业务激活后就监听MCCH对应的PDCCH等待业务开始可能会过早的开始监听MCCH对应的PDCCH，因为网络实现时正常应该保证给所有UE发完激活指示才开始发送业务，因此可能会过早的开始监听G-RNTI。考虑到如果有eDRX UE接收非连接态组播，其周期可能会很长，大于10.24s，这种场景下非连接态UE可能需要监听很久G-RNTI但是没有数据，这就会造成能量浪费。
本申请提供一种通信方法500，当存在多个UE时，不同UE的PO不同，网络设备为该多个UE指示一个MCCH消息的接收时刻，降低UE不必要的监听开销。如图9所示，该方法包括：
S501.网络设备确定第一终端装置对应的第一寻呼时机。
具体的，网络设备根据第一终端装置的标识确定第一终端装置的第一寻呼时机。
可选的，网络设备确定第二终端装置对应的第二寻呼时机。类似的，也是根据第二终端装置的标识或ID确定第二终端装置对应的第二PO。
以下，第一终端装置简称UE1，第一寻呼时机简称第一PO，第二终端装置以下简称UE2，第二寻呼时机以下简称第二PO。
UE1与UE2均为网络设备所在的小区内的终端装置，或者是UE1与第二的UE的RAN区域均包含网络设备所在的小区。UE1与UE2均对组播业务1感兴趣。
其中UE1可以是一个或多个终端设备，其确定的PO为相同的，UE2同理。
S502a.网络设备在第一PO上向第一终端装置发送第一信息，第一信息指示第一终端装置不接收连续的M个MCCH修改周期对应的MCCH消息。也可以理解为从第M+1个MCCH修改周期开始接收对应的MCCH消息。
对应的，第一终端装置在第一PO上接收第一信息，第一终端装置根据第一信息不接收M个MCCH修改周期对应的MCCH消息。
该连续的M个MCCH修改周期为第一PO对应的MCCH修改周期后的连续的M个MCCH修改周期。
其中，第一PO对应的MCCH修改周期可以理解为第一PO在时域上所处的MCCH修改周期。当前所述的MCCH修改周期可以为第0个修改周期，或者为第1个修改周期。
可选的，第一信息可以直接指示第一终端装置在第一时刻接收MCCH消息。即通过指示具体时刻的方式指示MCCH消息发送的时机，比如具体的帧，子帧，和/或时隙。可选的，此时可以向UE2发送第二信息，第二信息也指示第一时刻，则UE1和UE2可以同时在第一时刻接收MCCH消息。
第一信息承载在寻呼消息中，寻呼消息还包括组播业务对应TMGI。通过寻呼消息中携带的信息指示该组播业务激活。第一终端装置根据第一PO上接收的寻呼消息中自己的ID和感兴趣的组播业务1的TMGI确定该寻呼消息用于指示自己的组播业务的接收。根据寻呼消息中的第一信息确定跳过M个MCCH修改周期的MCCH消息接收第M+1个MCCH修改周期的MCCH消息；或者根据第一信息直接在第一时刻接收MCCH消息。指示信息可以是组播业务级别的，也就是一个业务对应一个指示。
可选的，502还可以包括：
S502b.在第二PO上向UE2发送第二信息，第二信息指示UE2不接收连续N个MCCH修改周期对应的MCCH消息，连续N个MCCH修改周期为第二PO对应MCCH修改周期后的连续N个 MCCH修改周期；
第二PO对应MCCH修改周期后的第N+1个MCCH修改周期与第一PO对应MCCH修改周期后的第M+1个MCCH修改周期相同。通过第二PO对应的MCCH修改周期后的第N+1个MCCH周期与第一PO对应的MCCH修改周期后的第M+1个MCCH修改周期相同，能够使得对于不同PO但是需要接收相同组播业务的UE，可以在相同的时期开始接收MCCH消息，避免PO较早的UE过早监听并接收MCCH消息导致的功耗。
S503.网络设备在第一PO对应的MCCH修改周期后的第M+1个MCCH修改周期内发送MCCH消息。
对应的，UE1在第一PO对应的MCCH修改周期后的第M+1个MCCH修改周期内接收MCCH消息。
可选的，当第二PO对应MCCH修改周期后的第N+1个MCCH修改周期与第一PO对应MCCH修改周期后的第M+1个MCCH修改周期相同，网络设备在第一PO对应的MCCH修改周期后的第M+1个MCCH修改周期内发送MCCH消息也即在第二PO对应MCCH修改周期后的第N+1个MCCH修改周期发送MCCH消息。
UE2在第一PO对应的MCCH修改周期后的第M+1个MCCH修改周期内接收MCCH消息。即UE1和UE2在相同的MCCH修改周期读取MCCH消息。
可选的，在发送MCCH消息之前，还包括以下步骤：
S502b.网络设备发送第三指示信息，第三指示信息指示UE1读取MCCH消息。
可选的，第三指示信息还被发送给UE2，第三指示信息还指示UE2读取MCCH消息。
该第三指示信息承载于DCI中，例如DCI_4中，或者承载在MCCH消息中。
第三指示信息包含第二比特，所述第二比特取值为第一取值时，所述第三指示信息指示UE读取MCCH。第一取值为1，或者第一取值为0。例如，当第二比特取值为1时，UE1根据该取值为1的bit在MCCH信道上接收MCCH消息。具体MCCH消息所在的时频资源位置通过DCI中其他信息指示，例如第一DCI还包括时频资源指示信息，指示MCCH消息的在PDSCH中的时频位置。
第三指示信息除了通过显示指示的方式指示是否读取MCCH之外，还可以通过隐式指示的方式完成指示。例如，当第一DCI中包含第三指示信息时，指示读取MCCH消息，当第一DCI中不包含第三指示信息时，指示不读取MCCH消息。第三指示信息可以表现为“true”。
当第三指示信息包括两个比特，比如第三指示信息包括2bit的字段“MCCH change notification”，该两bit中的一个bit的取值用于指示UE是否读取MCCH消息。例如，该两个比特中的第一个bit或第二个bit取值为第一取值，指示读取MCCH消息，取值为第二取值时，指示不需要读取MCCH消息。其中，第一取值为1，第二取值为0，或者，也可以反过来。
如果MCCH change notification包括两个bit。第1bit指示组播开始或激活,第二bit指示MCCH消息是否有修改。
对于UE来说，例如，对于UE1和UE2来说，如果收到paging消息指示对应的业务激活后仍需要监听MCCH修改通知也就是第三指示信息的话：对于网络来说就需要将第M+1个修改周期的2个比特中的所述指示UE是否读取MCCH消息的一bit设置为1，对于另外一比特不限制，可选的还需要将第一时长对应的修改周期的2个比特的所述指示UE是否读取MCCH消息的一bit也设置为为1，对于另外一比特不限制。
在一种情况下，UE收到paging指示激活后不需要监听MCCH修改通知，即不需要接收第三指示信息，则网络侧不需要设置2bit,可选的可以将第一时长对应的修改周期的2个比特 的所述指示UE是否读取MCCH消息的一bit的取值设置为1，对于另外一比特的取值不限制。
如果MCCH change notification中不包含针对业务状态变更确定是否需要监听MCCH的信息(比如只包括一个bit时)：则UE根据paging指示判断是否需要监听MCCH。
该MCCH消息包括组播业务的配置信息。
MCCH消息中包括组播业务的配置消息，例如包含MTCH的配置信息，比如MTCH对应的G-RNTI以及DRX参数。MTCH逻辑信道承载广播业务的用户数据。通过MCCH调度MTCH。MTCH的配置为per G-RNTI级别，也可说是per MBS service级别。其中，gNB通过组RNTI(G-RNTI,Group RNTI)来同时向多个UE调度业务数据，每个G-RNTI可以关联至少一个广播业务或组播业务。
因此，UE1可以根据MCCH消息在对应的MTCH接收组播业务的用户数据。
示例性的，如图10所示，为UE1所在的PO上发的组寻呼中除TMGI还指示在当前的MCCH修改周期的下2个MCCH修改周期开始监听MCCH，为UE2所在的PO上发的组寻呼中除TMGI还指示在当前的MCCH修改周期的下1个MCCH修改周期开始监听MCCH。则UE1和UE2可以在共同的MCCH修改周期3开始监听MCCH对应的PDCCH，然后接收MCCH消息，进而可以在MTCH上接收到业务信息。避免UE1过早开始监听而导致的不必要的功耗开销。
UE对应的PO的时刻不同，各个UE收到组寻呼消息以及激活指示的时刻不一致，这就导致了UE监听PDCCH接收MCCH的时间不一致，因此不同UE前后开始监听的MCCH可能距离比较远，而真正发送数据一般实现来说至少需要给所有UE都通知了业务激活才开始发送数据。因此可以通过指示UE接收MCCH消息的时刻，避免UE过早的监听MCCH带来的功耗。
对于eDRX场景当存在一个UE的空闲期较长，可能会导致其他UE在接收组播数据前，需要长时间监听MCCH对应的PDCCH，通过该方法，有效节省了该场景下UE用MCCH-RNTI监听PDCCH的功耗。
图11是本申请实施例提供的一种通信装置1100的示意图。该装置1100包括收发单元1110，收发单元1110可以用于实现相应的通信功能。收发单元1110还可以称为通信接口或通信单元。
可选地，该装置1100还可以包括处理单元1120，处理单元1120可以用于进行数据处理。
可选地，该装置1100还包括存储单元，该存储单元可以用于存储指令和/或数据，处理单元1120可以读取存储单元中的指令和/或数据，以使得装置实现前述各个方法实施例中终端设备或网络设备执行的动作。
在第一种设计中，该装置1100可以是前述实施例中的第一终端装置，也可以是第一终端装置的组成部件(如芯片)。该装置1100可实现对应于上文方法实施例中的第一终端装置执行的步骤或者流程，其中，收发单元1110可用于执行上文方法实施例中第一终端装置的收发相关的操作，处理单元1120可用于执行上文方法实施例中第一终端装置的处理相关的操作。
一种可能的实现方式，装置1100用于实现图6所示的方法实施例中第一终端装置的功能。例如，处理单元1120，用于根据所述第一终端装置的标识确定第一寻呼时机；处理单元1120，还用于在所述第一寻呼时机上未监听到寻呼消息的情况下，在第一时段内开始监听MCCH对应的PDCCH；收发单元1110，用于在所述PDCCH上接收第一DCI，根据所述第一DCI接收MCCH消息，所述MCCH消息包括组播业务的配置信息。
可选地，第一时段为所述第一寻呼时机所处的MCCH修改周期；或者第一时段为所述第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，其中N为正整数，且N为 正整数。
可选地，第一DCI中包含第一指示信息，根据第一DCI接收MCCH消息包括：当第一指示信息指示读取MCCH消息时，根据第一信息接收MCCH消息。
可选地，处理单元1120，用于根据第二指示信息确定跳过连续的M个MCCH修改周期，第二指示信息承载在DCI或MCCH消息中，M是正整数。
另一种可能的实现方式，装置1100用于实现图9所示的方法实施例中第一终端装置的功能。例如，收发单元1110，用于在第一PO上接收第一信息，所述第一信息指示所述第一终端装置不接收连续的M个MCCH修改周期对应的MCCH消息；处理单元1120，用于根据第一信息不接收所述M个MCCH修改周期对应的MCCH消息。
收发单元1110，还用于接收第三指示信息，处理单元1120，用于根据第三指示信息读取第M+1个MCCH修改周期对应的MCCH消息。
在第二种设计中，该装置1100可以是前述实施例中的网络设备，也可以是网络设备的组成部件(如芯片)。该装置1100可实现对应于上文方法实施例中的网络设备执行的步骤或者流程，其中，收发单元1110可用于执行上文方法实施例中网络设备的收发相关的操作，处理单元1120可用于执行上文方法实施例中网络设备的处理相关的操作。
一种可能的实现方式，装置1100用于实现图6所示的方法实施例中网络设备的功能。例如，处理单元1120，用于确定第一终端装置对应的第一寻呼时机；收发单元1110，用于在在所述第一寻呼时机对应的第一时段开始发第一DCI，所述第一DCI用于UE在第一寻呼时机上未监听到寻呼消息时调度MCCH消息；所述第一DCI用于调度MCCH消息，所述MCCH消息包括组播业务的配置信息。
可选地，第一时段为所述第一寻呼时机所处的MCCH修改周期；或者第一时段为所述第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，其中N为正整数，且N为正整数。
可选地，第一DCI中包含第一指示信息，根据第一DCI接收MCCH消息包括：当第一指示信息指示读取MCCH消息时，根据第一信息接收MCCH消息。
可选地，收发单元1110，用于向第一终端装置发送第二指示信息，第二指示信息指示第一终端装置跳过连续的M个MCCH修改周期，第二指示信息承载在DCI或MCCH消息中。
另一种可能的实现方式，装置1100用于实现图9所示的方法实施例中网络设备的功能。例如，处理单元1120，用于确定第一终端装置对应的第一PO；收发单元1110，用于在第一PO上向第一终端装置发送第一信息，第一信息指示第一终端装置不接收连续M个MCCH修改周期对应的MCCH消息，连续M个MCCH修改周期为第一PO对应MCCH修改周期后的连续M个MCCH修改周期；收发单元1110，还用于在第一PO对应MCCH修改周期后的第M+1个MCCH修改周期内发送MCCH消息。
可选地，处理单元1120，还用于确定第二终端装置对应的第二PO；收发单元1110，还用于在第二PO上向第二终端装置发送第二信息，第二信息指示第二终端装置不接收连续N个MCCH修改周期对应的MCCH消息，连续N个MCCH修改周期为第二PO对应MCCH修改周期后的连续N个MCCH修改周期；第二PO对应MCCH修改周期后的第N+1个MCCH修改周期与第一PO对应MCCH修改周期后的第M+1个MCCH修改周期相同。
可选地，收发单元1110，还用于在发送所述MCCH消息之前，发送第三指示信息，第三指示信息指示所述第一终端装置读取所述MCCH消息。
应理解，各单元执行上述相应步骤的具体过程在上述各方法实施例中已经详细说明，为 了简洁，在此不再赘述。
还应理解，这里的装置1100以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置1100可以具体为上述实施例中的第一终端装置，可以用于执行上述各方法实施例中与第一终端装置对应的各个流程和/或步骤，或者，装置1100可以具体为上述实施例中的第二终端装置，可以用于执行上述各方法实施例中与第二终端装置对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述各个方案的装置1100具有实现上述方法中第一终端装置所执行的相应步骤的功能，或者，上述各个方案的装置1100具有实现上述方法中第二终端装置所执行的相应步骤的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如收发单元可以由收发机替代(例如，收发单元中的发送单元可以由发送机替代，收发单元中的接收单元可以由接收机替代)，其它单元，如处理单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
此外，上述收发单元1110还可以是收发电路(例如可以包括接收电路和发送电路)，处理单元可以是处理电路。
需要指出的是，图11中的装置可以是前述实施例中的网元或设备，也可以是芯片或者芯片***，例如：片上***(system on chip，SoC)。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。在此不做限定。
图12是本申请实施例提供的另一种通信装置1200的示意图。该装置1200包括处理器1210，处理器1210与存储器1220耦合，存储器1220用于存储计算机程序或指令和/或数据，处理器1210用于执行存储器1220存储的计算机程序或指令，或读取存储器1220存储的数据，以执行上文各方法实施例中的方法。
可选地，处理器1210为一个或多个。
可选地，存储器1220为一个或多个。
可选地，该存储器1220与该处理器1210集成在一起，或者分离设置。
可选地，如图12所示，该装置1200还包括接口电路1230。接口电路1230用于信号的接收和/或发送。处理器1210和接口电路1230之间相互耦合。例如，处理器1210用于控制接口电路1230进行信号的接收和/或发送。可以理解的是，接口电路1230可以为收发器或输入输出接口。
当装置1200用于实现图6或图9所示的方法时，处理器1210用于实现上述处理单元1120的功能，接口电路1230用于实现上述收发单元1110的功能。
作为一种方案，该装置1200用于实现上文各个方法实施例中由第一终端装置执行的操作。
例如，处理器1210用于执行存储器1220存储的计算机程序或指令，以实现上文各个方法实施例中第一终端装置的相关操作。例如，图6或图9所示实施例中的第一终端装置执行的方法。
作为一种方案，该装置1200用于实现上文各个方法实施例中由第二终端装置执行的操作。
例如，处理器1210用于执行存储器1220存储的计算机程序或指令，以实现上文各个方法实施例中第二终端装置的相关操作。例如，图6或图9所示实施例中的第二终端装置执行的方法。
当上述通信装置为应用于终端的芯片时，该终端芯片实现上述方法实施例中终端的功能。该终端芯片从终端中的其它模块(如射频模块或天线)接收信息，该信息是基站发送给终端的；或者，该终端芯片向终端中的其它模块(如射频模块或天线)发送信息，该信息是终端发送给基站的。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器和/或非易失性存储器。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM包括如下多种形式：静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。
还需要说明的是，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图13是本申请实施例提供的芯片***1300的示意图。该芯片***1300(或者也可以称为处理***)包括逻辑电路1310以及输入/输出接口(input/output interface)1320。
其中，逻辑电路1310可以为芯片***1300中的处理电路。逻辑电路1310可以耦合连接存储单元，调用存储单元中的指令，使得芯片***1300可以实现本申请各实施例的方法和功能。输入/输出接口1320，可以为芯片***1300中的输入输出电路，将芯片***1300处理好的信息输出，或将待处理的数据或信令信息输入芯片***1300进行处理。
具体地，例如，若第一终端装置安装了该芯片***1300，逻辑电路1310与输入/输出接口1320耦合，逻辑电路1310可通过输入/输出接口1320向第二终端装置发送侧行反馈信息，该侧行反馈信息可以为逻辑电路1310根据生成的；或者输入/输出接口1320可将来自第二终端装置的侧行数据输入至逻辑电路1310进行处理。又如，若第二终端装置安装了该芯片***1300，逻辑电路1310与输入/输出接口1320耦合，逻辑电路1310可通过输入/输出接口1320向第一终端装置发送侧行数据，该侧行数据可以为逻辑电路1310生成的；或者输入/输出接口1320可将来自第一终端装置的侧行反馈信息输入至逻辑电路1310进行处理。
作为一种方案，该芯片***1300用于实现上文各个方法实施例中由第一终端装置执行的操作。
例如，逻辑电路1310用于实现上文方法实施例中由第一终端装置执行的处理相关的操作，如，图6或图9所示实施例中的第一终端装置执行的处理相关的操作；输入/输出接口1320 用于实现上文方法实施例中由第一终端装置执行的发送和/或接收相关的操作，如，图6或图9所示实施例中的第一终端装置执行的发送和/或接收相关的操作。
作为另一种方案，该芯片***1300用于实现上文各个方法实施例中由第二终端装置执行的操作。
例如，逻辑电路1310用于实现上文方法实施例中由第二终端装置执行的处理相关的操作，如，图6或图9所示实施例中的第二终端装置执行的处理相关的操作；输入/输出接口1320用于实现上文方法实施例中由第二终端装置执行的发送和/或接收相关的操作，如，图6或图9所示实施例中的第二终端装置执行的发送和/或接收相关的操作。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述各方法实施例中由第一终端装置或第二终端装置执行的方法的计算机指令。
例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法各实施例中由第一终端装置或第二终端装置执行的方法。
本申请实施例还提供一种计算机程序产品，包含指令，该指令被计算机执行时以实现上述各方法实施例中由第一终端装置或第二终端装置执行的方法。
本申请实施例还提供一种通信***，该通信***包括上文各实施例中的第一终端装置和第二终端装置。例如，该***包含图6或图9所示实施例中的第一终端装置和第二终端装置。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。此外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。例如，所述计算机可以是个人计算机，服务器，或者网络设备等。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD)等。例如，前述的可用介质包括但不限于：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    根据第一终端装置的标识确定第一寻呼时机；
    在所述第一寻呼时机上未监听到寻呼消息的情况下，在第一时段内开始监听多播广播控制信道MCCH对应的物理下行控制信道PDCCH；
    在所述PDCCH上接收第一下行控制信息DCI，
    根据所述第一DCI接收MCCH消息，所述MCCH消息包括组播业务的配置信息。
  2. 根据权利要求1所述的方法，其特征在于，
    所述第一时段为所述第一寻呼时机所处的MCCH修改周期；或者
    所述第一时段为所述第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，其中N为正整数，且N为正整数。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一DCI中包含第一指示信息，根据所述第一DCI接收MCCH消息包括：
    当所述第一指示信息指示读取MCCH消息时，根据所述第一信息接收MCCH消息。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，
    所述第一指示信息包含第一比特，所述第一比特取值为第一取值时，所述第一指示信息指示读取MCCH。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述方法包括：
    根据所述第二指示信息确定跳过连续的M个MCCH修改周期，所述第二指示信息承载在DCI或所述MCCH消息中，M是正整数。
  6. 一种通信方法，其特征在于，包括：
    确定第一终端装置对应的第一寻呼时机；
    在所述第一寻呼时机对应的第一时段开始发第一下行控制信息DCI，所述第一DCI用于所述第一终端装置在第一寻呼时机上未监听到寻呼消息时调度多播广播控制信道MCCH消息；所述MCCH消息包括组播业务的配置信息。
  7. 根据权利要求6所述的方法，其特征在于，
    所述第一时段为所述第一寻呼时机所处的MCCH修改周期；或者
    所述第一时段为所述第一寻呼时机所处的MCCH修改周期后的第N个MCCH修改周期，其中N为正整数，且N为正整数。
  8. 根据权利要求6或7所述的方法，其特征在于，
    所述第一DCI中包含第一指示信息，第一指示信息包含第一比特，所述第一比特取值为第一取值时，所述第一指示信息指示所述第一终端装置读取MCCH消息时。
  9. 根据权利要求6-8中任一项所述的方法，其特征在于，所述方法还包括：
    向第一终端装置发送第二指示信息，第二指示信息指示所述第一终端装置跳过连续的M个MCCH修改周期，所述第二指示信息承载在DCI或所述MCCH消息中。
  10. 一种通信方法，其特征在于，所述方法包括：
    确定第一终端装置对应的第一寻呼时机PO；
    在所述第一寻呼时机PO上向所述第一终端装置发送第一信息，所述第一信息指示所述第一终端装置不接收连续M个多播广播控制信道MCCH修改周期对应的MCCH消息，所述连续M个MCCH修改周期为第一PO对应MCCH修改周期后的连续M个MCCH修改周期；
    在所述第一PO对应MCCH修改周期后的第M+1个MCCH修改周期内发送MCCH消息。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    确定第二终端装置对应的第二PO；
    在第二PO上向第二终端装置发送第二信息，所述第二信息指示第二终端装置不接收连续N个MCCH修改周期对应的MCCH消息，所述连续N个MCCH修改周期为第二PO对应MCCH修改周期后的连续N个MCCH修改周期；
    所述第二PO对应MCCH修改周期后的第N+1个MCCH修改周期与所述第一PO对应MCCH修改周期后的第M+1个MCCH修改周期相同。
  12. 根据权利要求10或11所述的方法，其特征在于，所述方法还包括：
    在发送所述MCCH消息之前，发送第三指示信息，所述第三指示信息指示所述第一终端装置读取所述MCCH消息。
  13. 根据权利要求12所述的方法，其特征在于，所述第三指示信息包含第二比特，所述第二比特取值为第一取值时，所述第三指示信息指示所述第一终端装置读取MCCH。
  14. 一种通信方法，其特征在于，
    在第一寻呼时机PO上接收到第一信息，所述第一信息指示不接收连续的M个多播广播控制信道MCCH修改周期对应的MCCH消息；
    根据第一信息不接收所述M个MCCH修改周期对应的MCCH消息。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    接收到第三指示信息，根据第三指示信息读取第M+1个MCCH修改周期对应的MCCH消息。
  16. 一种通信装置，其特征在于，包括：
    处理器，用于执行存储器中存储的计算机程序，以使得所述装置执行如权利要求1至5中任一项所述的方法，或者以使得所述装置执行如权利要求6至9中任一项所述的方法，或者以使得所述装置执行如权利要求10至13中任一项所述的方法，或者以使得所述装置执行如权利要求14至15中任一项所述的方法。
  17. 根据权利要求16所述的装置，其特征在于，所述装置还包括所述存储器和/或通信接口，所述通信接口与所述处理器耦合，
    所述通信接口，用于输入和/或输出信息。
  18. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至5中任意一项所述的方法，或者以使得所述计算机执行如权利要求6至9中任一项所述的方法，或者以使得所述计算机执行如权利要求10至13中任一项所述的方法，或者以使得所述计算机执行如权利要求14至15中任一项所述的方法。
  19. 一种计算机程序产品，其特征在于，所述计算机程序产品包括用于执行如权利要求1至5中任一项所述的方法的指令，或者，所述计算机程序产品包括用于执行如权利要求6至9中任一项所述的方法的指令，或者，所述计算机程序产品包括用于执行如权利要求10至13中任一项所述的方法的指令，或者，所述计算机程序产品包括用于执行如权利要求14至15中任一项所述的方法的指令。
  20. 一种通信装置，包括用于实现如权利要求1至5中任一项所述方法的模块，或者如权利要求6至9中任一项所述方法的模块，或者如权利要求10至13中任一项所述方法的模块，或者如权利要求14或15所述方法的模块。
  21. 一种通信装置，包括收发单元和处理单元，其中，
    所述处理单元，用于根据第一终端装置的标识确定第一寻呼时机；
    在所述第一寻呼时机上未监听到寻呼消息的情况下，在第一时段内开始监听多播广播控制信道MCCH对应的物理下行控制信道PDCCH；
    所述收发单元，用于在所述PDCCH上接收第一下行控制信息DCI；
    所述收发单元，还用于根据所述第一DCI接收MCCH消息，所述MCCH消息包括组播业务的配置信息。
  22. 一种通信装置，包括收发单元和处理单元，其中，
    所述处理单元，用于确定第一终端装置对应的第一寻呼时机；
    所述收发单元，用于在所述第一寻呼时机对应的第一时段开始发第一下行控制信息DCI，所述第一DCI用于所述第一终端装置在第一寻呼时机上未监听到寻呼消息时调度多播广播控 制信道MCCH消息，所述MCCH消息包括组播业务的配置信息。
  23. 一种通信装置，包括收发单元和处理单元，其中，
    所述处理单元，用于确定第一终端装置对应的第一寻呼时机PO；
    所述收发单元，用于在所述第一寻呼时机PO上向所述第一终端装置发送第一信息，所述第一信息指示所述第一终端装置不接收连续M个多播广播控制信道MCCH修改周期对应的MCCH消息，所述连续M个MCCH修改周期为第一PO对应MCCH修改周期后的连续M个MCCH修改周期；
    所述收发单元，还用于在所述第一PO对应MCCH修改周期后的第M+1个MCCH修改周期内发送MCCH消息。
  24. 一种通信装置，包括收发单元和处理单元，其中，
    所述收发单元，用于在第一寻呼时机PO上接收到第一信息，所述第一信息指示不接收连续的M个多播广播控制信道MCCH修改周期对应的MCCH消息；
    根据第一信息不接收所述M个MCCH修改周期对应的MCCH消息。
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