WO2022057173A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2022057173A1
WO2022057173A1 PCT/CN2021/071621 CN2021071621W WO2022057173A1 WO 2022057173 A1 WO2022057173 A1 WO 2022057173A1 CN 2021071621 W CN2021071621 W CN 2021071621W WO 2022057173 A1 WO2022057173 A1 WO 2022057173A1
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WO
WIPO (PCT)
Prior art keywords
information
terminal devices
service
multicast
terminal
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PCT/CN2021/071621
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English (en)
French (fr)
Inventor
辛婷玉
李秉肇
陈磊
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华为技术有限公司
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Publication of WO2022057173A1 publication Critical patent/WO2022057173A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.
  • Multimedia broadcast multicast service (MBMS in LTE) under the long term evolution (long term evolution, LTE) system or multicast/multicast broadcast service (multicast broadcast service under the new radio (NR) system)
  • MBS Multimedia broadcast multicast service
  • LTE long term evolution
  • NR new radio
  • Multicast transmission technology refers to a technology in which MBS services (including MBS in LTE and/or MBS in NR) are simultaneously sent to multiple terminal devices through network devices (such as base stations).
  • the configuration information of the MBS service is configured by the network and sent to the terminal device.
  • the terminal device uses the configuration information to receive service data (user data) of the MBS service of interest.
  • service data user data
  • the network device modifies the MBS service configuration information
  • it can broadcast a notification that the MBS service configuration information has been modified, and the terminal device can re-obtain the configuration information from the network after receiving the notification.
  • the terminal device can re-obtain the configuration information from the network after receiving the notification.
  • the data of the MBS service according to the updated configuration information.
  • the terminal device may miss the notification that the configuration information of the MBS service sent by the network device has been modified, and thus cannot obtain the updated configuration information according to the notification, resulting in the terminal device failing to receive the MBS service. Reliability needs to be improved.
  • Embodiments of the present application provide a communication method and apparatus, which are used to improve the reliability of MBS service transmission.
  • a communication method is provided.
  • the method may be performed by a first communication apparatus, and the first communication apparatus may be a communication apparatus or a communication apparatus, such as a chip, capable of supporting the functions required by the communication apparatus to implement the method.
  • the first communication apparatus is a network device (such as a base station), or a chip provided in the network device for implementing the function of the network device, or other components for implementing the function of the network device.
  • the first communication apparatus is a network device as an example for description.
  • the method includes: the network device determines first information, where the first information is used to instruct to modify the configuration of the multicast/multicast service.
  • the network device repeatedly sends the first information at N occasions, where N is an integer greater than or equal to 1.
  • the network device repeatedly sends the first information at multiple occasions, which increases the possibility of the terminal device receiving the first information, thus improving the reliability of the MBS service.
  • the first information includes identification information, where the identification information includes a service identification and/or information used to indicate that the first information is repeatedly sent (such as version information, or other displayed or indicated information). Indicates that the first information is repeatedly transmitted information).
  • the service identifier is included, the first information may indicate the MBS service whose configuration is modified, so as to facilitate the terminal device to identify the MBS service that it is interested in and/or ongoing, and improve notification efficiency.
  • the terminal device can be prevented from responding to the multiple first information repeatedly sent multiple times, so as to save signaling overhead and reduce power consumption of the terminal device.
  • the N occasions belong to the first cycle.
  • the first period is preconfigured, or; the network device further sends information for indicating the first period.
  • the terminal device can be prevented from responding multiple times to the repeatedly sent first information, so as to save signaling overhead and reduce the power consumption of the terminal device.
  • a communication method is provided.
  • the method may be performed by a first communication apparatus, and the first communication apparatus may be a communication apparatus or a communication apparatus, such as a chip, capable of supporting the functions required by the communication apparatus to implement the method.
  • the first communication apparatus is a network device (such as a base station), or a chip provided in the network device for implementing the function of the network device, or other components for implementing the function of the network device.
  • the first communication apparatus is a network device as an example for description.
  • the method includes:
  • the network device determines the first information, and repeatedly sends multiple pieces of the first information at N occasions, where N is an integer greater than or equal to 1, and the N occasions belong to the first cycle, or the multiple pieces of first information include the same version information, Or, the downlink control information of the multiple pieces of first information includes the same version information, and the first information is a paging message.
  • the network device repeatedly sends the first information at multiple occasions, which increases the possibility of the terminal device receiving the first information, thus improving the reliability of the MBS service.
  • the first information includes a service identifier.
  • the first information may indicate the MBS service whose configuration is modified, so as to facilitate the terminal device to identify the MBS service that it is interested in and/or ongoing, and improve notification efficiency.
  • the N opportunities belong to a first period, and the first period is pre-configured; or, the network device further sends information for indicating the first period.
  • the terminal device can be prevented from responding multiple times to the repeatedly sent first information, so as to save signaling overhead and reduce the power consumption of the terminal device.
  • the network device may send the first information to the M first terminal devices in at least one first opportunity among the N occasions, and in the N occasions
  • the third information is sent to the K second terminal devices in at least one second opportunity among the N occasions.
  • the at least one second opportunity is located after the at least one first opportunity
  • the M first terminal devices include the K second terminal devices, M>K (or M ⁇ K); the third information is used for Indicates to modify the configuration of this multicast/multicast service.
  • the M first terminal devices include terminal devices interested in the first multicast/multicast service and/or terminal devices that are receiving the first multicast/multicast service.
  • the network device can also send the notification message to the second terminal device again, which improves the possibility that the second terminal device receives the notification message and further improves the reliability of the MBS service.
  • the network device may send the first information to the M first terminal devices through broadcast or multicast, and send the first information to the M first terminal devices through multicast or unicast
  • the K second terminal devices send the first information.
  • multicast or unicast when sending the third information to the second terminal device, multicast or unicast can be used for targeted sending, so as to improve the sending efficiency of the third information without causing extra power consumption of the terminal device.
  • the third information includes the first information.
  • the third information further includes the identification information of the K second terminal devices, so as to realize targeted sending.
  • the network device receives response information from at least one third terminal device before the at least one second opportunity, where the response information is used to indicate that the first a message.
  • the at least one third terminal device belongs to the M first terminal devices, but does not belong to the K second terminal devices.
  • the network device can re-send a notification message to the second terminal device that has not sent the response information of the first information and/or has not initiated random access, so as to notify the second terminal device of the configuration modification of the first MBS service again.
  • the network device obtains the information of the M first terminal devices from the second network device or the M first terminal devices; wherein the M first terminal devices
  • the information of the first terminal devices includes the identification information of the M first terminal devices, the information of the multicast/multicast service that the M first terminal devices are interested in, or the multicast/multicast services being received by the M first terminal devices. At least one piece of information about the multicast service.
  • the network device can receive the information of the M first terminal devices from the second network device, so the second network device can uniformly manage the information of the terminal devices of the base station.
  • the network device sends the information of the M first terminal devices to the second network device.
  • the M first terminal devices belong to an idle state or an inactive state.
  • the reliability of the MBS service of the terminal equipment in the idle state or the inactive state can be improved in a targeted manner.
  • the present application provides a communication method.
  • the method may be performed by a second communication apparatus, and the second communication apparatus may be a communication apparatus or a communication apparatus, such as a chip, capable of supporting the functions required by the communication apparatus to implement the method.
  • the second communication apparatus is a terminal device, or a chip provided in the terminal device for implementing the function of the terminal device, or other components for implementing the function of the terminal device.
  • the second communication device is a terminal device as an example for description.
  • the method includes: the terminal device receives one or more pieces of first information at N occasions, where the first information is used to instruct to modify the configuration of the multicast/multicast service, and N is an integer greater than or equal to 1.
  • the terminal device establishes a radio resource control RRC connection with the network device in response to the received first first information.
  • the first information includes identification information, where the identification information includes at least one item of service identification and version information.
  • the N occasions belong to the first cycle.
  • the first period is preconfigured, or the terminal device may receive information indicating the first period.
  • the present application provides a communication method.
  • the method may be performed by a second communication apparatus, and the second communication apparatus may be a communication apparatus or a communication apparatus, such as a chip, capable of supporting the functions required by the communication apparatus to implement the method.
  • the second communication apparatus is a terminal device, or a chip provided in the terminal device for implementing the function of the terminal device, or other components for implementing the function of the terminal device.
  • the second communication device is a terminal device as an example for description.
  • the method includes: the terminal device receives multiple pieces of first information at N occasions, where N is an integer greater than or equal to 1, and the N occasions belong to the first cycle, or the multiple pieces of first information include the same version information, or , the downlink control information of the multiple pieces of first information includes the same version information, and the multiple pieces of first information are paging messages.
  • the terminal device performs a first operation in response to a piece of the first information.
  • the plurality of first pieces of information include service identifiers.
  • the N occasions belong to a first period, and the first period is pre-configured, or the terminal device may also receive information indicating the first period.
  • a communication method is provided.
  • the method may be performed by a third communication apparatus, and the third communication apparatus may be a communication apparatus or a communication apparatus, such as a chip, capable of supporting the functions required by the communication apparatus to implement the method.
  • the third communication device is a second network device, such as a core network device, a data storage node, or a device or node such as a multicast control unit, or a chip set in the second network device, or a device for implementing other components of the functionality of the second network device.
  • the third communication apparatus is the second network device as an example for description.
  • the method includes: the second network device receives information from M first terminal devices of the network device, where M is an integer greater than or equal to 1.
  • the second network device sends the information of the M first terminal devices to the network device.
  • the information of the M first terminal devices includes identification information of the M first terminal devices and information of the multicast/multicast service that the M first terminal devices are interested in and/or the M first terminals Information about multicast/multicast services the device is receiving.
  • the M first terminal devices belong to an idle state or an inactive state.
  • the second network device may also receive information of P terminal devices from the third network device, where the information of the P terminal devices includes identification information of the P terminal devices and the P terminals The information of the multicast/multicast service that the device is interested in and/or the information of the multicast/multicast service being received by the P terminal devices; the M first terminal devices do not include the P terminal devices.
  • a communication device is provided, for example, the communication device is the aforementioned first communication device.
  • the first communication apparatus is configured to perform the method in the above-mentioned first aspect, the second aspect or any possible implementation manner thereof.
  • the first communication apparatus may include a module for executing the method in the first aspect, the second aspect or any possible implementation manner thereof, for example, including a processing module and a communication module.
  • the communication module may include a sending module and a receiving module, and the sending module and the receiving module may be different functional modules, or may be the same functional module but can implement different functions.
  • the first communication apparatus is a communication device, or a chip or other component provided in the communication device.
  • the communication device is a network device (eg, a base station).
  • the first communication apparatus is a network device.
  • the communication module can be implemented by a transceiver, and the processing module can be implemented by a processor.
  • the sending module may be implemented by a transmitter
  • the receiving module may be implemented by a receiver
  • the transmitter and the receiver may be different functional modules, or may be the same functional module but capable of implementing different functions.
  • the transceiver is implemented by, for example, an antenna, a feeder, a codec and the like in the communication device.
  • the first communication device is a chip provided in the communication device
  • the transceiver (or the transmitter and the receiver) is, for example, a communication interface in the chip, and the communication interface is connected with the radio frequency transceiver component in the communication device to Send and receive information through radio frequency transceiver components.
  • the first communication apparatus is continued to be a network device, and the processing module and the communication module are taken as examples for introduction.
  • the processing module may determine first information, where the first information is used to instruct to modify the configuration of the multicast/multicast service.
  • the communication module repeatedly sends the first information at N occasions, where N is an integer greater than or equal to 1.
  • the first information includes identification information, where the identification information includes a service identification and/or information used to indicate that the first information is repeatedly sent (such as version information, or other displayed or indicated information). Indicates that the first information is repeatedly transmitted information).
  • the service identifier is included, the first information may indicate the MBS service whose configuration has been modified, so as to facilitate the terminal device to identify the MBS service that it is interested in and/or ongoing, and improve notification efficiency.
  • the terminal device can be prevented from responding to the multiple first information repeatedly sent multiple times, so as to save signaling overhead and reduce power consumption of the terminal device.
  • the N occasions belong to the first cycle.
  • the first period is pre-configured, or; the communication module further sends information for indicating the first period.
  • the processing module may be used to determine the first information.
  • the communication module may be configured to repeatedly send multiple pieces of the first information at N occasions, where N is an integer greater than or equal to 1, and the N occasions belong to the first cycle, or the multiple pieces of first information include the same version information, or,
  • the downlink control information of the multiple pieces of first information includes the same version information, and the first information is a paging message.
  • the first information includes a service identifier.
  • the N opportunities belong to a first period, and the first period is pre-configured; or, the communication module is further configured to send information for indicating the first period.
  • the communication module may send the first information to the M first terminal devices in at least one first opportunity among the N occasions, and at least one of the N occasions.
  • the third information is sent to K second terminal devices in at least one second opportunity among the N occasions.
  • the at least one second opportunity is located after the at least one first opportunity, and the M first terminal devices include the K second terminal devices, M>K (or M ⁇ K); the third information is used for Indicates to modify the configuration of this multicast/multicast service.
  • the M first terminal devices include terminal devices interested in the first multicast/multicast service and/or terminal devices that are receiving the first multicast/multicast service.
  • the communication module may send the first information to the M first terminal devices through broadcast or multicast, and send the first information to the M first terminal devices through multicast or unicast
  • the K second terminal devices send the first information.
  • the third information includes the first information.
  • the third information further includes identification information of the K second terminal devices, so as to implement targeted sending.
  • the module may receive response information from at least one third terminal device before the at least one second opportunity, where the response information is used to indicate that the first information.
  • the at least one third terminal device belongs to the M first terminal devices, but does not belong to the K second terminal devices.
  • the communication module may obtain the information of the M first terminal devices from the second network device or the M first terminal devices; wherein the The information of the M first terminal devices includes the identification information of the M first terminal devices, the information of the multicast/multicast service that the M first terminal devices are interested in, or the multicast/multicast service information that the M first terminal devices are receiving. at least one of the information of the broadcast/multicast service.
  • the communication module may send the information of the M first terminal devices to the second network device.
  • the M first terminal devices belong to an idle state or an inactive state.
  • a communication device is provided, for example, the communication device is the aforementioned second communication device.
  • the second communication apparatus is configured to perform the method in the third aspect, the fourth aspect or any possible implementation manner thereof.
  • the second communication apparatus may include a module for performing the method in the third aspect, the fourth aspect or any possible implementation manner thereof, such as a processing module and a communication module.
  • the communication module may include a sending module and a receiving module, and the sending module and the receiving module may be different functional modules, or may be the same functional module but can implement different functions.
  • the second communication apparatus is a communication device, or a chip or other components provided in the communication device.
  • the communication device is a terminal device.
  • the second communication device is a terminal device.
  • the communication module can be implemented by a transceiver, and the processing module can be implemented by a processor.
  • the sending module may be implemented by a transmitter
  • the receiving module may be implemented by a receiver
  • the transmitter and the receiver may be different functional modules, or may be the same functional module but capable of implementing different functions.
  • the transceiver is implemented by, for example, an antenna, a feeder, a codec and the like in the communication device.
  • the second communication device is a chip provided in the communication device
  • the transceiver (or the transmitter and the receiver) is, for example, a communication interface in the chip, and the communication interface is connected with the radio frequency transceiver component in the communication device to Send and receive information through radio frequency transceiver components.
  • the second communication device is continued to be a terminal device, and the processing module and the communication module are used as examples for introduction.
  • the communication module may receive one or more pieces of first information at N times, where the first information is used to instruct to modify the configuration of the multicast/multicast service, and N is greater than or equal to An integer equal to 1.
  • the processing module establishes a radio resource control RRC connection with the network device in response to the received first first information.
  • the first information includes identification information, where the identification information includes at least one item of service identification and version information.
  • the N occasions belong to the first cycle.
  • the first period is preconfigured, or the communication module may receive information indicating the first period.
  • the communication module may be configured to receive multiple pieces of first information at N occasions, where N is an integer greater than or equal to 1, and the N occasions belong to the first cycle, or the multiple first information
  • One piece of information includes the same version information, or the downlink control information of the multiple pieces of first information includes the same version information, and the multiple pieces of first information are paging messages.
  • the processing module is operable to perform a first operation in response to one of the first messages.
  • the plurality of first pieces of information include service identifiers.
  • the N opportunities belong to a first period, and the first period is pre-configured, or the communication module may also receive information indicating the first period.
  • a communication device is provided, for example, the communication device is the aforementioned third communication device.
  • the third communication apparatus is configured to perform the method in the fifth aspect or any possible implementation manner thereof.
  • the third communication apparatus may include a module for executing the method in the fifth aspect or any possible implementation manner thereof, for example, including a processing module and a communication module.
  • the communication module may include a sending module and a receiving module, and the sending module and the receiving module may be different functional modules, or may be the same functional module but can implement different functions.
  • the third communication apparatus is a communication device, or a chip or other component provided in the communication device.
  • the communication device is a second network device.
  • the third communication apparatus is the second network device.
  • the communication module can be implemented by a transceiver, and the processing module can be implemented by a processor.
  • the sending module may be implemented by a transmitter
  • the receiving module may be implemented by a receiver
  • the transmitter and the receiver may be different functional modules, or may be the same functional module but capable of implementing different functions.
  • the transceiver is implemented by, for example, a communication interface in the communication device or the like.
  • the transceiver (or the transmitter and the receiver) is, for example, a communication interface in the chip, and the communication interface is connected with the radio frequency transceiver component in the communication device to Send and receive information through radio frequency transceiver components.
  • the third communication apparatus is continued to be the second network device, and the sending module and the receiving module are taken as examples for introduction.
  • the receiving module may receive information from M first terminal devices of the network device, where M is an integer greater than or equal to 1.
  • the sending module may send the information of the M first terminal devices to the network device.
  • the information of the M first terminal devices includes identification information of the M first terminal devices and information of the multicast/multicast service that the M first terminal devices are interested in and/or the M first terminals Information about multicast/multicast services the device is receiving.
  • the M first terminal devices belong to an idle state or an inactive state.
  • the receiving module may also receive information of P terminal devices from the third network device, where the information of the P terminal devices includes the identification information of the P terminal devices and the sense of the P terminal devices. Information of interested multicast/multicast services and/or information of multicast/multicast services being received by the P terminal devices; the M first terminal devices do not include the P terminal devices.
  • a communication system including at least two communication devices of the sixth to eighth aspects.
  • a computer-readable storage medium is provided, where the computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed on the computer, the computer is made to execute the above-mentioned first to fifth aspects or any one of the possibilities thereof. method in an embodiment.
  • a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed on a computer, the computer is made to execute the above-mentioned first to fifth aspects or any one of them Methods in possible implementations.
  • a twelfth aspect provides a computer program product containing instructions, the computer program product is used to store computer instructions, and when the computer instructions are run on a computer, the computer can execute the above-mentioned first to fifth aspects or any one of the possibilities thereof. method in an embodiment.
  • a thirteenth aspect provides a circuit, the circuit is coupled to a memory, and the circuit is configured to read and execute a program stored in the memory to perform the method in the above-mentioned first to fifth aspects or any possible implementation manners thereof.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of repeatedly sending first information according to an embodiment of the present application.
  • FIG. 6 is another schematic diagram of repeatedly sending first information according to an embodiment of the present application.
  • FIG. 7 is another schematic diagram of repeatedly sending first information according to an embodiment of the present application.
  • FIG 8 is another schematic diagram of repeatedly sending first information according to an embodiment of the present application.
  • 9A is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 9B is a schematic diagram of a sending process of notification information provided by an embodiment of the present application.
  • FIG. 9C is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • 9D is another schematic diagram of repeatedly sending the first information according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication method provided by the embodiment of the present application may be applied to a wireless communication system, and the wireless communication system may include a terminal device 101 and a network device 102 .
  • the above wireless communication system is applicable to both a low frequency scenario (sub 6G) and a high frequency scenario (above 6G).
  • Application scenarios of the wireless communication system include, but are not limited to, fifth-generation systems, new radio (NR) communication systems, or future evolved public land mobile network (PLMN) systems, and the like.
  • NR new radio
  • PLMN public land mobile network
  • the terminal device 101 shown above may be a user equipment (UE), a terminal (terminal), an access terminal, a terminal unit, a terminal station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile terminal ( mobile terminal), wireless communication equipment, terminal agent or terminal equipment, etc.
  • the terminal device 101 may have a wireless transceiver function, which can communicate with one or more network devices of one or more communication systems (eg, wireless communication), and accept network services provided by the network devices, where the network devices include but not
  • the network device 102 is limited to the illustration.
  • the terminal device 101 may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or terminal devices in future evolved PLMN networks, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal device 101 can be deployed on land, including indoor or outdoor, handheld or vehicle; the terminal device 101 can also be deployed on water (such as ships, etc.); the terminal device 101 can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device 101 may specifically be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, an industrial control (industrial control) wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the terminal device 101 may also be a communication chip with a communication module, a vehicle with a communication function, or an in-vehicle device (such as an in-vehicle communication device, an in-vehicle communication chip) or the like.
  • the network device 102 may be an access network device (or an access network point).
  • the access network device refers to a device that provides a network access function, such as a radio access network (radio access network, RAN) base station, and the like.
  • the network device 102 may specifically include a base station (base station, BS) (such as a RAN base station), or include a base station and a radio resource management device for controlling the base station, and the like.
  • the network device 102 may also include a relay station (relay device), an access point, a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station, and the like.
  • the network device 102 may be a wearable device or a vehicle-mounted device.
  • the network device 102 may also be a communication chip with a communication module.
  • the network device 102 includes, but is not limited to: the next generation base station (g nodeB, gNB) in 5G, the evolved node B (evolved node B, eNB) in the long term evolution (long term evolution, LTE) system, radio network control radio network controller (RNC), wireless controller under cloud radio access network (CRAN) system, base station controller (BSC), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, global aystem for mobile communication , GSM) or code division multiple access (code division multiple access, CDMA) network base transceiver station (base transceiver station, BTS), can also be wideband code division multiple access (wideband code division multiple access, WCDMA) in A node base station (NB) can also be an evolutional NB (eNB or eNodeB)
  • the network device 102 may be connected to a core network (core network, CN) device, and the core network device may be used to provide core network services for the terminal device 101 accessing the network device 102 .
  • Core network equipment corresponds to different equipment in different systems.
  • the core network equipment can correspond to the service support node (serving GPRS support node, SGSN) of general packet radio service technology (general packet radio service, GPRS) and/or the gateway support node of GPRS (gateway GPRS Support Node, GGSN) .
  • the core network equipment may correspond to a mobility management entity (mobility management entity, MME) and/or a serving gateway (serving gateway, S-GW).
  • MME mobility management entity
  • serving gateway serving gateway
  • core network equipment can correspond to access and mobility management function (AMF), session management function (SMF) or user plane function (UPF).
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • the network device may also transmit data or control signaling to multiple terminal devices, so as to realize the transmission of multicast/multicast services.
  • the multicast/multicast service may be referred to as the MBS service for short.
  • the data of the MBS service can be sent to the terminal device by the network device in the form of unicast (unicastor point to point, PTP) by establishing a dedicated bearer for the terminal device through the network, or by establishing an MBS service.
  • Service-specific bearers are sent to terminal devices in the form of multicast or point to multipoint (PTM).
  • the terminal device shown in FIG. 2 may be implemented by the above-mentioned terminal device 101
  • the network device shown in FIG. 2 may be implemented by the above-mentioned network device 102 .
  • the flow of recovering the ongoing (ongoing) MBS service after the process of starting the MBS service, updating the configuration, and performing cell selection by the terminal device will be described below with reference to FIG. 3 . It should be understood that the process shown in FIG. 3 is performed based on the following assumptions: a terminal device in a radio resource control (radio resource control, RRC) idle (IDLE) state or an inactive (inactive) state enters the RRC connection state and receives through dedicated signaling The configuration information of the MBS, after successfully receiving the configuration information, the terminal device can return to the RRC idle state or inactive state.
  • RRC radio resource control
  • the core network can notify the terminal equipment of service start, service reactivation, service data recovery, or service configuration modification through notification information.
  • Changes such as switching between point-to-point (PTP) and point-to-multipoint (PTM); changes in time-frequency resources that can be used to receive service data, such as changes in time-frequency resources such as partial bandwidth (
  • PTP point-to-point
  • PTM point-to-multipoint
  • SPS semi-persistent scheduling
  • the start of receiving the MBS service here includes the receiving when a new service is started, and the receiving when the service is resumed.
  • the start of a new service is the first transmission of a service.
  • the reception started after service recovery can also be understood as service reactivation or service data recovery.
  • the transmission is stopped/suspended because there is no data (for a period of time), and then the data is restored because data arrives/needs to be transmitted. transmission.
  • starting transmission at this time does not require the terminal device to re-register in the core network.
  • the notification information may be included in a paging message (paging message), or may be included in other messages, which is not limited in this application. It can be understood that, in the embodiments of the present application, unless otherwise specified, the notification information is a description method of a paging message or other types of messages, and the notification information may be included in a description method of a paging message or other types of messages. , express the same meaning.
  • FIG. 3 takes a paging message as an example for description. It should be understood that, in practical applications, the MBS service shown in FIG. 3 can be replaced with a vehicle to everything (V2X) service or other broadcast and multicast services other than the MBS service.
  • V2X vehicle to everything
  • the process of the terminal equipment starting to receive the new MBS service may include the following steps:
  • a terminal device interested in the MBS service is registered in the core network.
  • Terminal devices interested in MBS services can register in the core network.
  • the terminal device is added (join) to a session (session)/multicast group (MBS group).
  • the terminal equipment interested in the multicast/multicast service is registered in the core network.
  • terminal devices interested in broadcasting services do not need to register in the core network.
  • S101 The core network starts to transmit (a certain) MBS service.
  • S101 may also be replaced with: the core network is about to start transmitting (a certain) MBS service.
  • the core network notifies the terminal equipment interested in the MBS service that a new MBS service has started through the CN notification information, such as a paging message, or notifies the terminal equipment of the start of the MBS service.
  • the following takes the paging message as an example.
  • the MBS service includes a multicast/multicast service
  • the network device is interested in notifying terminal devices interested in this service
  • the MBS service includes broadcasting services
  • the network device is interested in notifying all terminal devices of the MBS service.
  • all terminal devices may be all terminal devices in the area where the broadcast service is performed.
  • the terminal equipment may include terminal equipment in RRC idle state or inactive state, and may also include terminal equipment in RRC connected state.
  • the paging message can contain the service identifier of the MBS, such as the temporary mobile group identifier ( temporary mobile group identity, TMGI), MBS service ID (MBS service ID), or a wireless network temporary ID used to schedule the MBS service, such as group radio network temporary identifier (G-RNTI), multicast session ID (MBS session ID), protocol data unit (protocol data unit, PDU) session ID used to transmit multicast services, etc.
  • the terminal device can judge whether the MBS service is a service that it is interested in and/or is receiving according to the service identifier of the MBS in the CN paging message, so as to decide whether to respond to the paging message.
  • the terminal device determines that the new MBS service started is the service of interest to the terminal device through the service identifier of the MBS in the CN paging message.
  • S104 In response to the CN paging message, the terminal device in the RRC idle state or the inactive state initiates a random access (random access, RA), optionally, completes the establishment of the RRC connection and enters the connected state.
  • RA random access
  • the base station After the RRC connection is successfully established, the base station sends the configuration information of the MBS service to the terminal device, and the configuration information of the MBS service can be sent to the terminal device through dedicated RRC (dedicated RRC) signaling. In another possible implementation manner, the base station sends the configuration information of the MBS service to the terminal device through the MSG 4/MSG B.
  • RRC dedicated RRC
  • the terminal device After the terminal device receives the configuration information of the MBS service, if the conditions allow (for example, the channel condition/quality meets the requirements), the terminal device returns to the original state (ie, the RRC idle state or the inactive state), and receives the information in the original state. Data information of MBS business.
  • the terminal device may initiate a request to the network device to request to leave the RRC connected state when it is determined that the condition is permitted (for example, the channel condition/quality meets the requirements).
  • the network device may also release the RRC connection of the terminal device according to the measurement result of the terminal device. Then the terminal device can return to the original state (ie RRC idle state or inactive state), or enter the RRC state indicated by the network device, and receive the data information of the MBS service in this state.
  • the terminal device can determine the MBS service that it is interested in and start playing through stored information or other methods.
  • the terminal device can obtain information such as the start time and end time of the MBS service of interest from the core network through a non-access stratum (non-access stratum, NAS) message or other processes, as the stored information.
  • the terminal equipment can also obtain corresponding information from the base station.
  • the terminal device can start to obtain the configuration information of the MBS service in the following ways:
  • the terminal device initiates random access to the RA, establishes an RRC connection, and informs the base station of the reason for establishing the RRC connection, for example, informs the base station that the terminal device wants to receive data information of certain MBS services, such as carrying the identification information of the MBS service.
  • the base station sends the configuration information of the MBS service to the terminal device.
  • the terminal device receives the configuration information, if the conditions allow (for example, the channel condition/quality meets the requirements), the terminal device returns to the original state (ie RRC idle state or inactive state), receive the data information of the service of this MBS in the original state.
  • the base station sends the configuration information of the MBS service to the terminal device through the MSG 4/MSG B, and the terminal device does not need to enter the connected state.
  • the base station may modify the configuration of the MBS service.
  • the base station needs to send the modified (or updated) configuration to the terminal equipment.
  • the modified (or updated) configuration may be all information of the configuration of the MBS service, or the information that the configuration of the MBS service is changed, or the corresponding delta information of the configuration modification of the MBS service, which is not limited.
  • the configuration information of the MBS service is transmitted through the dedicated signaling, the base station needs to notify the terminal equipment of the configuration change of the MBS service, and the terminal equipment needs to be in the RRC connection state and receive the modified configuration through the dedicated signaling.
  • the corresponding process may include the following steps:
  • the base station sends a paging message to notify the modification of the configuration information of the MBS service.
  • the modification of the MBS service configuration can be regarded as the behavior of the base station, and the paging message used to notify the terminal equipment of the configuration change of the MBS service is triggered by the base station and is a RAN paging message.
  • the terminal device receives the RAN paging message, and according to the RAN paging message carries the MBS service identifier, such as MBS service ID, TMGI, G-RNTI, and the identifier of the multicast session (MBS session ID), which is used to transmit the multicast service.
  • MBS service identifier such as MBS service ID, TMGI, G-RNTI, and the identifier of the multicast session (MBS session ID)
  • MBS session ID the identifier of the multicast session
  • the protocol data unit (PDU) session ID and/or other information determines that this RAN paging message is a notification of configuration change of the MBS service related to itself, such as the configuration change of the MBS service that it is interested in or is in progress notify.
  • the terminal device performs RA and enters a connected state.
  • the base station to which the terminal device establishes the connection state at this time may be the base station in which the connection state is established in S104, or another base station, which is not specifically limited here.
  • the base station sends the modified configuration information of the MBS service to the terminal device through dedicated signaling.
  • the terminal device After the terminal device receives the configuration information, if the conditions permit (for example, the channel condition/quality meets the requirements), the terminal device returns to the original state (that is, the RRC idle state or the inactive state), or enters the state indicated by the base station, In this state, the data information of the service of this MBS is received.
  • the conditions permit for example, the channel condition/quality meets the requirements
  • the terminal device returns to the original state (that is, the RRC idle state or the inactive state), or enters the state indicated by the base station, In this state, the data information of the service of this MBS is received.
  • the terminal device may start or continue the ongoing MBS service in some scenarios.
  • the terminal equipment performs cell selection and starts to receive the ongoing MBS service; or the terminal equipment performs cell reselection and continues to receive the ongoing MBS service; Interested MBS services can now start receiving interested ongoing MBS services.
  • the process for the terminal device to start or continue the ongoing MBS service may include the following steps:
  • S112 The terminal device performs RA and enters a connected state.
  • the terminal device entering the connected state can query whether there is an MBS service that it is interested in in this cell.
  • the terminal device when querying whether there is an MBS service that the cell is interested in, can initiate a request to the network device to request to obtain a list of MBS services supported by the network device, being transmitted or about to be transmitted.
  • the terminal device may also send a list of MBS services that it is interested in and/or is receiving to the network device, and the network device determines whether there is a terminal device sense of Interested in MBS business.
  • the terminal device receives configuration information of the MBS service through dedicated signaling.
  • the network device can send the configuration information of the MBS service to the terminal device through dedicated signaling, and the terminal device can receive the configuration of the MBS service through dedicated signaling. information.
  • the terminal device After the terminal device receives the configuration information, if the conditions allow (for example, the channel condition/quality meets the requirements), the terminal device returns to the original state (that is, the RRC idle state or the inactive state), or enters the state indicated by the base station, In this state, the data information of the service of this MBS is received.
  • the conditions allow for example, the channel condition/quality meets the requirements
  • the terminal device returns to the original state (that is, the RRC idle state or the inactive state), or enters the state indicated by the base station, In this state, the data information of the service of this MBS is received.
  • the paging messages (such as CN paging messages and/or RAN paging messages) in the above process shown in FIG. 3 may carry TMGI, and the paging occasion (PO) and the paging frame ( paging frame, PF). Paging messages are sent to all terminal devices in the cell, similar to paging with short message for SI change corresponding to system information (SI) change, rather than paging for call establishment information.
  • the paging message (such as CN paging message and/or RAN paging message) may also carry the UE ID of the terminal device, and the paging occasion and paging frame are calculated by the UE ID.
  • the paging message can be sent to all terminal equipments in the cell.
  • paging through TMGI can reduce the size of the paging message and save space resources.
  • the TMGI or UE ID mentioned in this application can also be replaced with any other information that can identify the multicast service, such as G-RNTI, MBS session ID or PDU session ID used to transmit multicast services, etc.
  • terminal equipment monitoring paging messages From the point of view of terminal equipment monitoring paging messages, at present, for the case where discontinuous reception (DRX) is configured for terminal equipment in RRC idle state or inactive state, terminal equipment in each DRX cycle (cycle) Monitor a PO in order to save energy.
  • one PO may include a series of PDCCH monitoring occasions, and may include multiple time slots.
  • the downlink control information (DCI) of the paging message is scrambled by the paging radio network temporary identifier (P-RNTI).
  • the time domain location of the PO can be determined by the terminal equipment identification (UEID).
  • UEID terminal equipment identification
  • the SFN frame number of PF is obtained by the following formula:
  • the i_s of PO is obtained by the following formula:
  • i_s floor(UE_ID/N)mod Ns.
  • i_s is the number of the PO corresponding to a PF, that is, the i_s of a certain terminal device indicates that the terminal device is to receive the paging message in the i_s+1th PO in the PF.
  • the paging frame and paging occasion can be derived from the following parameters:
  • T indicates the DRX cycle, that is, the paging cycle.
  • nB The value is 4T, 2T, T, T/2, T/4, T/8, T/16 or T/32, indicating the high-level configuration parameter.
  • N The value is min(T,nB), which indicates the number of paging frames in the paging cycle.
  • Ns is max(1,nB/T), which indicates the number of paging subframes in the paging frame.
  • UE_ID The value is IMSI mod 1024. IMSI is International Mobile Subscriber Identity (IMSI). mod represents the remainder operation.
  • IMSI International Mobile Subscriber Identity
  • the UE ID can also be replaced by TMGI, G-RNTI, MBS session ID, or PDU session ID used for transmitting multicast services, etc.
  • the replacement information can be any information that can identify the MBS service.
  • the terminal device After the terminal device receives the paging message at its PO location, it determines whether the paging message is related to itself according to the information carried in the paging message, such as the terminal device identification list.
  • the time domain location of the PO can be determined by the MBS service identifier (eg TMGI).
  • the terminal device attempts to receive a paging message at a specific PO, and does not need to monitor the paging message at other time domain locations. Therefore, the network device needs to send the paging message over the air interface at the time domain position where the PO is located, so that the terminal device may receive the paging message.
  • the paging message for notifying the MBS of configuration update may only be sent once, and once the terminal device misses this PO, it cannot know the update of the configuration information. Therefore, when the network device uses the updated MBS service configuration for data scheduling, the terminal device may not be able to receive the data of the MBS service, resulting in interruption of the MBS service.
  • the RAN paging message shown in S107 adopts the above paging mechanism, that is, it needs to be sent at the location where the specific PO is located.
  • the terminal equipment will not be able to receive the data information of the MBS service normally, resulting in MBS services are interrupted.
  • the network equipment/base station cannot perceive that the terminal equipment is in a certain cell. If the MBS service is changed in a certain cell, the base station cannot perceive the terminal equipment that missed the RAN paging message. Therefore, it cannot be ensured that the terminal equipment in the RRC idle state and/or the inactive state can receive the notification that the MBS service configuration has changed, and the reliability of the MBS service needs to be improved.
  • the communication method can be implemented by network equipment and terminal equipment.
  • the network equipment may include access network equipment, such as the network equipment 102 shown in FIG. 1 .
  • the terminal device may include the terminal device 101 shown in FIG. 1 .
  • the method may include the steps shown in Figure 4:
  • S201 The network device determines the first information.
  • the first information may be used to instruct to modify the configuration of the MBS service, or in other words, the first information may be used to notify the modification of the configuration information of the MBS service.
  • the first information may include information that can be used to identify the MBS service, and may be used to determine which MBS service configuration information has been modified by the network device, so that the terminal device determines whether to establish an RRC connection in response to the received first information.
  • the first information may include the service identifier of the MBS service, such as MBS service ID, TMGI, G-RNTI, MBS session ID, or the PDUsession ID of the PDUsession used to transmit the multicast service, etc.
  • N is an integer greater than or equal to 1.
  • S203 The terminal device receives one or more pieces of first information at N times.
  • the opportunity may include the PO
  • the first information may include the RAN paging message, or the first information may be included in the paging message; or, the opportunity may include a time domain location other than the paging opportunity (for example, the network device other than the PO additional indicated time slots).
  • the way of determining the PO can refer to the above description, that is, the terminal device can still use the existing paging message monitoring mechanism, for example, without increasing the number of POs that need to be monitored in each DRX cycle, it needs to monitor in one DRX cycle A PO does not need to generate additional power consumption.
  • S204 The terminal device establishes an RRC connection with the network device in response to the received first first information.
  • the terminal device can receive the updated configuration information of the MBS service in the RRC connection state, and the updated configuration information can be used by the terminal device to receive the data of the MBS service.
  • the terminal device may be made to establish an RRC connection only in response to the first received first information. After receiving the first first information, the terminal device may not continue to monitor at other times, or the terminal device does not respond to the monitored first information.
  • the network device repeatedly sends the first information at multiple occasions, which increases the possibility of the terminal device receiving the first information, thus improving the reliability of the MBS service.
  • the network device in order for the terminal device to identify the multiple pieces of first information sent repeatedly, can repeatedly send the first information in multiple formats, so that the terminal device can avoid multiple responses to the multiple pieces of first information.
  • the network device taking the network device as a base station as an example, several feasible manners are exemplified for description. It should be understood that it should not be considered that the embodiments shown below can only be implemented by a base station, and the base station can also be replaced by other manifestations of the network device 102 .
  • the base station adds the same identification information to the first information, and when the terminal device receives multiple first information, it can identify that the multiple first information is repeatedly sent according to the identification information.
  • the identification information may be carried in downlink control information of each first information or other control information for scheduling the first information.
  • the first information may include displayed indication information, for example, may include version information, where the version information is information instructing the base station to perform a multicast service configuration update, or number/identification information: the same configuration update corresponds to the same number. /Identification information, a possible way is to use one or more bits (bit) to represent the same configuration update; or, the first information may include implicit indications, such as multicast service configuration update information, multicast service update information configuration information, multicast service configuration information, and delta configuration of multicast services; or, the first information may include explicit information and implicit information, for example, the first information includes one or more of the above information, which may be a version information and multicast service configuration update information, etc.
  • version information is information instructing the base station to perform a multicast service configuration update, or number/identification information: the same configuration update corresponds to the same number. /Identification information, a possible way is to use one or more bits (bit) to represent the same configuration update
  • the first information may include implicit indications, such as multicast service configuration update information
  • a configuration modification made by the base station corresponds to the same displayed and/or implicit indication information, for example, version information may be included, and the version information is information instructing the base station to perform a multicast service configuration update, or number/identification information.
  • the next configuration modification corresponds to additional explicit and/or implicit indication information.
  • the base station configures the ongoing/transmitted MBS service successively Two modifications are made, and each paging message used to notify the configuration modification is repeated three times.
  • the first information does not include version information
  • a terminal device receives multiple paging messages corresponding to the first modification, it will respond to the paging messages multiple times, such as performing RA.
  • the terminal equipment since the paging messages corresponding to the first modification all correspond to the same modification of the same MBS service configuration information, the terminal equipment only needs to respond to the paging message once.
  • the base station may modify the configuration of one or more MBS services in one MBS service configuration modification procedure.
  • the base station when the version information is carried, as shown in FIG. 6 , the base station carries the same version information in the RAN paging message corresponding to the first modification, for example, carries a tag (tag) 1;
  • the RAN paging message of the second modification carries the same version information (and the information is different from the same information carried in the RAN paging message corresponding to the first modification), for example, tag2 is carried.
  • tag2 is carried.
  • the terminal device determines that the received multiple RAN paging messages corresponding to the first modification all carry tag1, it will only perform RA in response to one of the RAN paging messages, which can save signaling overhead and space resources. Reduce the load of the base station, avoid the terminal equipment consuming extra power, and avoid the repeated establishment of RRC connections.
  • the base station sends second information to the terminal device, where the second information is used to configure the first period, and the N occasions in S202 belong to the same first period.
  • the content of the first information sent in any one of the first cycles is the same. In other words, the base station repeatedly sends the first information in the first cycle.
  • the content of multiple pieces of first information in different first periods may be different, or in other words, may correspond to different MBS services and/or different configuration modifications, but it does not exclude that the same first information may be used in multiple Repeated sending in the first period, for the same configuration modification of one MBS service.
  • the multiple pieces of first information received by the terminal device are the same.
  • the first information may be sent M times, and M may be jointly determined by the length of the first cycle and the time domain position of the first information each time.
  • the base station may send the indication information of the first period before sending the first information, and the indication information of the first period may be broadcast; it may also be included in the multicast configuration, and may be broadcast or dedicated signaling.
  • RRC message sent.
  • the indication information is used to indicate the length of the first period, and optionally, can also be used to indicate an offset (offset), for the terminal device to determine the first period according to the length of the first period and the offset (if configured). If there is no offset configuration information, the offset can be considered to be 0.
  • the first message being a RAN paging message as an example
  • each RAN paging message for notifying the configuration modification is repeated 3 times
  • the corresponding paging messages are modified twice within the two first cycles respectively.
  • the first cycle shown in FIG. 7 is the same as the configuration change cycle.
  • the base station only modifies the configuration of the same MBS service once in the same configuration modification period.
  • the terminal device detects the first information sent by the network device. After the terminal device successfully reads (receives) the first information for the first time, it performs RA in response to the first information and enters the RRC connection state. And receive the updated configuration information of the MBS service through dedicated signaling, or receive the updated part in the configuration information of the MBS service, or the delta configuration of the configuration information of the MBS service. As shown in FIG. 8 , within a first message, if the terminal device reads the first message again after successfully reading the first message for the first time, it does not need to respond to the first message, so signaling can be saved Overhead, to avoid repeated establishment of RRC connection.
  • the energy consumption of the UE can also be further saved.
  • the terminal device detects the first information carrying the same indication information again after successfully receiving the first information for the first time, it knows that the first information is sent repeatedly, and will not read the duplicate first information. content, and can further save the energy consumption of the UE.
  • the base station may further indicate a second period, such as a transmission period of the configuration information of the MBS service, and both the first period and the second period can be configured through the second information.
  • the first period may be the same length as the second period and/or coincide in time domain.
  • the first information may indicate that the configuration information of the MBS service is modified from the second period, where the first period is located before the second period. Therefore, the terminal device may acquire the updated configuration information of the MBS service before the second period, and receive the MBS service according to the updated configuration information after the second period starts.
  • the base station may send the first information to M first terminal devices at at least one first opportunity among N occasions, where the M first terminal devices include terminal devices interested in the MBS service, and/or , the terminal equipment that is receiving the MBS service.
  • the third information is sent to the K second terminal devices.
  • the at least one second opportunity is located after the at least one first opportunity, and the M first terminal devices include the K second terminal devices.
  • the third information may be used to instruct to modify the configuration of the MBS service, or in other words, the third information may be used to notify the modification of the configuration information of the MBS service.
  • the third information may include the first information.
  • the third information may include the identification information of the K second terminal devices, so that the modification of the configuration of the MBS service can be notified for the K second terminal devices.
  • the first information may be sent by broadcast or multicast, and the third information may be sent by multicast or unicast.
  • a possible implementation is that the first information is sent by broadcast, and the third information can be sent by unicast or multicast; or, the first information can be sent by multicast, and the third information can be sent by unicast or group.
  • Send the third information in a broadcast mode so as to realize the targeted sending of the third information, avoid sending the third information to the terminal equipment that has received the first information and/or do not need to receive the first information and the third information, and does not cause additional power consumption of the terminal equipment. , to improve the transmission efficiency of the third information.
  • the base station may receive reception response information from the third terminal device, where the reception response information is used to indicate that the third terminal device that sent the reception response information received the first information, and/or, The base station may establish an RRC connection with the third terminal equipment according to the RA request from the third terminal equipment, wherein the third terminal equipment belongs to the M first terminal equipments, but does not belong to the K second terminal equipments.
  • the K second terminal devices do not include the third terminal device that sends the reception response information to the base station and/or initiates RA to the base station according to the first information.
  • the K second terminal devices do not include the third terminal device that sends the reception response information to the base station
  • the terminal device that receives the response information and/or initiates RA to the base station according to the first information, or in other words, the M first terminal devices are composed of K second terminal devices and third terminal devices. Therefore, the above design enables the base station to determine whether all the M first terminal devices have responded to the first information, and if there is a terminal device that has not responded, it will send the third information to the terminal device that has not responded, so it can be notified again.
  • the configuration information of the MBS service of the terminal device that has not received the first information is modified, so that the terminal device can be prevented from missing the configuration modification notification of the MBS service, and the reliability of the MBS service can be improved.
  • the base station may again (or multiple times) The third information is sent to the terminal devices until all the first terminal devices send and receive response information or initiate RA, so as to further improve reliability.
  • the third information can be sent by unicast or multicast, including the third information is sent by unicast, then the third information can carry the UE ID of a certain/any second terminal device, and each third information carries a The UE ID of the second terminal device, sent to a second terminal device.
  • the third information can be sent by multicast, including: the third information can carry all or part of the UE ID and/or multicast service identifier of the second terminal device (such as MBS service ID, TMGI, G-RNTI, MBS session ID, or The PDUsession ID of the PDUsession used to transmit the multicast service, etc.), the third information is sent to all or a part of the second terminal equipment.
  • the third information For the case where the third information carries a part of the UE ID of the second terminal device, in order to ensure that all second terminal devices are notified, the third information includes multiple sub-information of the third information, and all the sub-information of the third information includes all the third information.
  • the UE ID of the second terminal device For the third information carrying the multicast service identifier, the third terminal device may not need to respond to the third information, and the specific method may be combined with the solutions shown in the first and/or second modes.
  • the base station may obtain the information of the M first terminal devices from core network devices (or data storage nodes, multicast control units, etc. devices, nodes, hereinafter referred to as second network devices) and/or the first terminal devices. information.
  • the base station may send the information of the first terminal device to the second network device before receiving the information of the first terminal device.
  • the base station may delete the context of the terminal device.
  • the base station cannot know the information of the terminal equipment in the RRC idle state or inactive state that is interested in the first MBS service and/or is receiving the first MBS service.
  • the information of the terminal equipment can be one or more of the following: identification information of the terminal equipment, such as UE ID; information about the multicast service that the terminal information is interested in and/or is receiving, such as the TMGI of the multicast service, which is used to schedule the The RNTI (G-RNTI) of the multicast service, the service ID of the multicast service, the multicast session identification information (MBS Session ID), or the identification information of the PUD session used to transmit the MBS service, etc.
  • identification information of the terminal equipment such as UE ID
  • information about the multicast service that the terminal information is interested in and/or is receiving such as the TMGI of the multicast service, which is used to schedule the The RNTI (G-RNTI) of the multicast service, the service ID of the multicast service, the multicast session identification information (MBS Session ID), or the identification information of the PUD session used to transmit the MBS service, etc.
  • G-RNTI The RNTI
  • MMS Session ID multicast session identification
  • the base station can obtain the information of the terminal device after the terminal device enters the RRC connected state or during the process of the RRC connected state (in the RA process).
  • the information of the terminal device may include the information of the terminal device and/or the Information about the MBS services that the terminal device is interested in and/or is receiving.
  • the base station may send the information of the terminal device and/or the information of the MBS service that the terminal device is interested in and/or is receiving to the second network device.
  • the base station may send the above information to the second network device based on the terminal device leaving the RRC connected state, or may send the above information to the second network device after the terminal device enters the RRC connected state or during the process of the RRC connected state (in the RA process). There is no restriction on the timing of sending information.
  • the second network can obtain information on terminal equipments interested in and/or receiving MBS services, and the terminal equipments may be in any RRC state, and may also be in an idle state and/or an inactive state.
  • the base station may notify the first terminal device according to the information of the first terminal device from the second network device, so as to improve reliability.
  • the serving base station of the cell can acquire the information of the terminal device.
  • the base station can send the information of the fourth terminal device to the second network device, and the second network device can determine that the fourth terminal device has Leave the first cell and camp on the second cell.
  • the second network device updates the terminal device list corresponding to each base station based on the above information, and sends the terminal device list to the corresponding base station.
  • the list of terminal devices that the base station obtains updated, the list includes information on terminal devices that are interested in and/or are receiving MBS services (that is, the information of the M first terminal devices), and the terminal devices can be in any RRC state or idle. state and/or inactive state.
  • the above first terminal equipment may be in an RRC idle state or an inactive state.
  • the base station reports its identification information and information about the MBS service that the terminal device is interested in and/or is receiving for each terminal device that enters the RRC idle state or the inactive state from the RRC connected state, and the second network device obtains the information of the base station.
  • a terminal equipment list (UElist), which may include the identification information of the terminal equipment reported by the base station and information about the MBS services that the terminal equipment is interested in and/or is receiving.
  • the second network device may also store UE lists of other base stations.
  • the second network device may periodically (for example, according to the first cycle) or after the configuration of the MBS service is modified, push the identification information of the terminal device reported by the base station and the MBS that the terminal device is interested in and/or is receiving to the base station business information.
  • the base station can grasp the identification information of all terminal equipments in the RRC idle state or inactive state in the cell and the information about the MBS service that the terminal equipment is interested in and/or is receiving.
  • the base station can Determine the information of the first terminal device that is interested in the MBS service or is receiving the MBS service according to the above information, and the base station notifies the first terminal device in the above manner according to the information of the first terminal device, so as to improve the RRC in a targeted manner. Reliability of MBS service of terminal equipment in idle state or inactive state.
  • the base station (hereinafter referred to as the source base station) to which the cell belongs before the reselection cannot know the departure of the terminal equipment, and the base station ( Hereinafter referred to as the third network device) is able to know the access of the terminal device.
  • the third network device can send the identification information of the terminal device and the information of the MBS service that the terminal device is interested in and/or is receiving to the second network device, and the second network device will find the identification information of the terminal device If it has been reported by the source base station before, it can be known that the information of the terminal device belongs to the terminal device list of the source base station, and the information of the terminal device can be deleted from the terminal device list of the source base station, so the terminal device is no longer sent to the source base station. device information, the source base station no longer needs to send the first information to the terminal device.
  • the second network device can also receive information from the P fifth terminal devices of the third network device.
  • the information may include identification information of the P fifth terminal devices and information of the MBS service of interest and/or being received.
  • the second network device may send the information of the M first terminal devices to the source base station .
  • the information of the first terminal devices sent by the second network device to the source base station does not include the information of the terminal devices within the intersection range.
  • the source base station is prevented from notifying the terminal equipment that has moved out, so as to save signaling overhead.
  • the communication method provided by the embodiment of the present application may include the following steps:
  • S301 The M first terminal devices establish an RRC connection with the base station.
  • the base station acquires the information of the M first terminal devices.
  • the information of the first terminal device includes identification information of the first terminal device and/or information of MBS services that the first terminal device is interested in and/or is receiving.
  • the identification information of the first terminal device is such as UE ID.
  • Information about the MBS service that the first terminal device is interested in such as information about the multicast service that the terminal information is interested in and/or is receiving, such as the TMGI of the multicast service that the first terminal device is interested in and/or is receiving, for Schedule the RNTI (such as G-RNTI) of the multicast service, the service ID of the multicast service, the multicast session identification information (MBS Session ID), or the identification information of the PUD session used to transmit the MBS service, etc.
  • the base station sends the information of the M first terminal devices to the second network device.
  • the base station may send the information of the first terminal device to the second network device after the first terminal device enters the RRC connected state, or during the process of the RRC connected state (for example, during the RA process), or may be based on the first terminal device leaving In the RRC connection state (eg, the first terminal device enters an idle state or an inactive state), the information of the first terminal device is sent to the second network device.
  • the second network device may maintain the UE list of the base station, which includes the information of the first terminal device.
  • the base station deletes the information of the first terminal devices entering the idle state or the inactive state.
  • the second network device sends the information of the M first terminal devices to the terminal device.
  • the sending of the information of the first terminal equipment may be performed periodically, or may be performed after receiving a request from the base station, or may be performed when the first terminal equipment in the cell under the base station changes (or when the base station After the first terminal device in the cell under the control changes).
  • the change of the first terminal device in the cell under the base station includes that a first terminal device in an idle state or an inactive state resides in the cell, and initiates the configuration of the RA for receiving the multicast service in the cell and/or data, and/or the first terminal equipment in idle or inactive state that previously resided in the cell resides in other cells, and initiates RA in other cells for receiving configuration and/or data of multicast services.
  • the second network equipment may send the information of the terminal equipment in the UE list corresponding to the base station to the base station according to the period, wherein the information of the terminal equipment in the UE list is The information includes information of the first terminal device.
  • the base station may request the second network device to be interested in the first MBS service or to be interested in the first MBS service after the configuration information of the first MBS service is modified.
  • Information of the terminal equipment for example, the request can carry the identification information of the first MBS service, such as the MBS service ID, TMGI, G-RNTI, and MBS session ID of the first MBS service, or the ID of the PDUsession used to transmit the multicast service. PDUsession ID, etc.
  • the second network device may query the UE list of the base station based on the request to obtain the information included in the UE list of terminal devices interested in the first MBS service or performing the first MBS service, and send information about the first MBS service to the base station
  • the information of the terminal devices interested in or performing the first MBS service for example, the information of the terminal devices interested in the first MBS service or performing the first MBS service includes information of M first terminal devices.
  • the information of the first terminal device sent by the second network device to the base station may be the identification information of the first terminal device, or the identification information of the first terminal device and the information that the first terminal device is interested in and/or is currently engaged in.
  • Information about the MBS service wherein the information about the MBS service that the first terminal device is interested in and/or is in progress includes but is not limited to the first MBS service.
  • the base station determines that the configuration information of the first MBS service is modified.
  • the base station modifies the configuration information
  • the core network modifies the configuration information and notifies the base station of the modification.
  • the base station sends the first information to the M first terminal devices at at least one first opportunity among the N occasions.
  • the first information may be used to instruct to modify the configuration information of the first MBS service, or in other words, the first information is used to notify the modification of the configuration information of the first MBS service.
  • the first information can be used to identify the first MBS service, for example, the first information includes a service identifier of the first MBS service, such as the MBS service ID, TMGI, G-RNTI, and MBS session ID of the first MBS service, or for transmission The PDUsession ID of the PDUsession of the multicast service, etc.
  • the first information may further include identification information of the M first terminal devices.
  • the first information is carried in a paging message.
  • the base station sends the third information to the K second terminal devices at at least one second opportunity among the N occasions.
  • the third information may be used to instruct to modify the configuration information of the first MBS service.
  • the third information may include the content of the first information, such as the identifier of the first MBS service.
  • the third information may include respective identification information of the K second terminal devices.
  • the base station may determine, according to the information of the M pieces of first terminal equipment and the information of the terminal equipment that sends the response information of the first information and/or the information of the terminal equipment that initiates RA to the base station, the equipment that does not respond to the first information Terminal device, that is, determine the second terminal device.
  • the K second terminal devices do not include the third terminal device that sends the reception response information of the first information to the base station and/or the third terminal device that initiates RA to the base station according to the first information.
  • the K second terminal devices do not include the third terminal device that sends the first information to the base station.
  • the reception response information of a message and/or the terminal device that initiates RA to the base station according to the first information, or in other words, the M first terminal devices are composed of K second terminal devices and third terminal devices, wherein the third terminal device
  • the device is a terminal device that sends reception response information of the first information to the base station and/or initiates RA to the base station according to the first information.
  • the base station may also receive the reception response information of the first information from the third terminal device, and/or receive the RA request initiated by the third terminal device, and the RA request uses upon request to establish an RRC connection.
  • This S308 is an optional step. If the M first terminal devices have all sent the information of the first information and/or initiated RA to the base station, then skip S308.
  • the base station may also send the fourth information to the K second terminal devices that have not sent the response information of the third information and/or the terminal devices that have not initiated RA to the base station. If the K second terminal devices all send information of the third information and/or initiate RA to the base station, this step is skipped.
  • the fourth information may include the first information.
  • the fourth information can carry the identifier of the terminal device.
  • the base station may re- or more The information used to indicate the modification of the first MBS service is sent to the terminal equipment that has not sent the response information and/or has not initiated RA to the base station until the base station determines that the K second terminal equipments have all sent the information of the third information and/or sent the information to the base station.
  • the base station initiates RA.
  • the base station can know that it needs to send notification information for instructing to modify the configuration information of the first MBS service to the M first terminal devices.
  • the base station can For these terminal devices, the notification information is sent again. Therefore, the base station can ensure that all the first terminal devices have received the notification message according to the information of the M first terminal devices, so as to improve the reliability of the MBS service.
  • the first terminal device after the first terminal device receives the information for instructing to modify the first MBS service, it can determine its own RRC state.
  • the information used to instruct to modify the first MBS service includes the first information, the third information, the fourth information, and the like. If the first terminal device is in the RRC connected state, it can receive the configuration information of the first MBS service from the base station in the connected state. If the first terminal device is in the RRC idle state or the inactive state, the first terminal device may initiate RA to the base station based on the information used to instruct to modify the first MBS service, so as to request to establish an RRC connection. The terminal device may receive configuration information of the first MBS service from the base station.
  • the base station may send configuration information of the first MBS service to the first terminal device.
  • the first terminal device may return to the idle state or the disconnected state, or enter the RRC state indicated by the base station, and receive the first MBS service according to the first MBS service.
  • the embodiment of the present application provides another communication method, which is used to improve the transmission reliability of notification information.
  • the notification information here may be included in, for example, a paging message, or may be included in other messages, which is not specifically limited in this application.
  • the notification information can be used to notify the service to start transmission or to modify the configuration of the service.
  • the services here include NR or MBS services in future network systems, V2X services or other broadcast, multicast or multicast services.
  • the notification information for notifying the start of the service or the service notification information includes the notification information for the service started for the first time (or the service started for the first time), the notification information for the service that is not started for the first time, and the notification information for the modified service.
  • the service notification information can be triggered by the core network and sent to the terminal device through an access network device (eg, a base station), or the service notification information can be triggered by the access network device.
  • trigger notification information refers to generating and sending service notification information. The following description takes the access network device as the base station.
  • the notification information includes a message notifying the start of the MBS service, the modification of the MBS service, or the modification of the configuration of the service (or service configuration modification, service configuration modification notification).
  • the notification process of the start of the service can be referred to as shown in FIG. 3 .
  • the notification information for the service started for the first time is the notification when the service is started for the first time.
  • the notification can be triggered by the core network device and sent to the terminal device through the base station.
  • the notification information for a service not started for the first time is a notification when service data is restored (or service reactivation), indicating that the service data is to be transferred or started to be transferred.
  • the service notification can be triggered by the core network device and sent to the terminal device through the base station; or the base station can trigger notification information, and the base station sends the notification information to the terminal device.
  • the service has already started transmission before the transmission is resumed or before the current transmission, but due to reasons such as no data transmission for a period of time, the service session may be released, or the multicast/multicast scheduling may be released, and the terminal device stops receiving the service. Or the terminal device stops receiving the service transmitted in the form of multicast/multicast. If the service data is recovered, the terminal equipment needs to continue to receive the service, or the terminal equipment continues to receive the service transmitted in the form of multicast/multicast. At this time, the network needs to send the service notification to the terminal device.
  • the notification information for modifying the configuration of the service can be used to notify the change of the service configuration. For example, when the configuration of the ongoing service is changed, the network notifies the change of the service configuration through the notification information.
  • a notification to modify the configuration of the service may be sent by the base station to the terminal device.
  • the scheduling information (eg, DCI of the paging message) of the paging message sent from the base station to the terminal device may include a short message (short message).
  • the short message may include system information modification (system information modification), earthquake and tsunami warning system (etws) (indication), commercial mobile alert service (Cmas) and stop paging monitoring (stoppagingmonitoring) and other instructions.
  • system information modification system information modification
  • etws earthquake and tsunami warning system
  • Cmas commercial mobile alert service
  • stoppaging monitoring stoppagingmonitoring
  • the scheduling information of the paging message indicates that there is information for scheduling the paging message (eg, only the information for scheduling the paging message exists in the scheduling information, or the information for scheduling the paging message and the short message exists in the scheduling information ), there may be subsequent paging messages.
  • the paging message may be carried on the PDSCH channel, and corresponding scheduling information (such as DCI) is required for scheduling.
  • the notification information may also include necessary information for representing the notified event.
  • the notification information may include indication information.
  • the indication information is used to indicate that the subsequent paging message of the service is related to the service.
  • the service is an MBS service
  • the paging message is related to the MBS service; optional Yes, the indication information is used to indicate the start of the service, and may also indicate the first or non-first start of the service, and/or the indication information to indicate the modification of the service configuration, and the like.
  • the notified event may be indicated for the service, that is, the notification information indicates the notified event for a certain service; or, the notification information may not distinguish the service indicated the notified event.
  • the process of sending notification information is described below by taking the flow shown in FIG. 9B as an example.
  • the first information in S101 may include notification information 2 and/or notification information 3 as shown in FIG. 9B .
  • the notification information 2 and/or the notification information 3 may be notification information for a service started for the first time, notification information for a service not started for the first time, notification information for modifying the configuration of the service, and the like.
  • the notification information 1 shown in FIG. 9B is notification information triggered by the core network, such as CN notification information.
  • the CN notification information may be included in a paging message, such as a CN paging message, or may be included in other types of messages, which are not specifically limited in this application.
  • the notification information 1 carries the identification information of the service.
  • the notification information 2 may be scheduling information.
  • the notification information 3 may be a message scheduled by the scheduling information.
  • the notification information 2 is DCI
  • the notification information 3 is a paging message or other types of messages, and the notification information 2 can be used to schedule the notification information 3 .
  • the CN paging message may carry the identification information of the terminal device, such as the NG interface 5G temporary mobile subscriber identity (serving-temporary mobile subscriber identity, ng-5G-S-TMSI).
  • notification information 3 may not exist, or in other words, notification information 2 does not include the For the information of the scheduling notification information 3, the notification information 3 is not sent.
  • the notification information 3 is, for example, a RAN paging message
  • the terminal device may determine whether the paging process (or the RAN paging message) is related to itself according to the identification information of the terminal device in the notification information 3.
  • the RAN paging message may carry identification information of the terminal equipment, such as terminal equipment identification (UE-Identity, UE ID).
  • the communication method may include the process shown in Figure 9C:
  • S401 The network device determines the first information.
  • the first information is, for example, notification information.
  • the notification information may include the first information shown in S201.
  • the first information can be triggered by the core network device, the core network triggers the notification information and sends it to the base station, and the base station generates the first information and sends it to the terminal device, such as a service change notification.
  • the first information may also be triggered by the base station and sent to the terminal device, such as a service configuration modification notification, a service change notification for a terminal device in an RRC inactive state.
  • the first information in this application may be a paging message, and optionally, the first information may be a CN paging message or a message triggered by notification information delivered by other core networks.
  • the first information may be a paging message or other types of messages.
  • other types of messages may be dedicated signaling (eg, dedicated RRC messages), such as RRC reconfiguration messages, RRC recovery messages, RRC reestablishment messages, and the like.
  • other types of messages may also be broadcast messages, such as system messages, multicast control messages (which may be carried on a multicast control channel, such as MCCH/SC-MCCH), etc., without limitation.
  • the first information may be a CN paging message, or may be other types of messages.
  • other types of messages may be multicast/broadcast service notification information and the like. It is sent by the core network to the base station, and the base station is sent to the terminal equipment.
  • the first information may include part or all of notification information 2 or notification information 3 .
  • the notification information 1 may include service-related information or service-related terminal device information.
  • the notification information 1 may carry the identification information of the terminal equipment being paged, such as UE ID, 5G-S-TMSI.
  • the notification information 1 may include indication information if the paging message is used to notify the MBS service or other notifications.
  • the indication information may include the service identification of the paging message notification service, the service type (such as the indication information used to indicate the MBS service), the identification information of the terminal equipment receiving this service, or the cell list or area information that provides the service. (area information), etc., there is no restriction here.
  • the base station can determine the service and/or terminal device corresponding to the notification information 1, and send the notification information 2 to the related terminal device.
  • the base station may send the notification information 2 based on its own decision rather than based on a message from the core network, that is, the notification information 1 shown in FIG. 9B is optional for the sending of the notification information 2 .
  • the notification information 2 may include the service-related information in the notification information 1, the information of the service-related terminal equipment, and/or some or all of the information in the indication information.
  • the notification information 2 may be a paging message or scheduling information for scheduling a paging message, or the like.
  • the notification information 2 may include indication information.
  • the indication information may be part or all of the information such as the service identifier of the paging message notification service, the service type, and/or the identification information of the terminal device receiving the service.
  • the service identifier may include the MBS service ID, TMGI, G-RNTI, MBS session ID, or the PDUsession ID of the PDUsession used to transmit the multicast service, etc.
  • the service type may be information used to indicate the MBS service, such as 1-bit information to indicate whether the notification information 2 is related to the MBS service.
  • the service type may also indicate that the notified service is a broadcast service or a multicast service, etc., which is not limited.
  • the notification information 2 may also be scheduling information for scheduling paging messages, such as scheduling information for paging messages (eg, paging DCI) or scheduling information for other messages.
  • the terminal device may receive the notification information 3 scheduled by the notification information 2 .
  • the notification information 2 may carry indication information for notifying the service, such as MBS indication.
  • indication information refer to the foregoing description.
  • Notification information 2 may also include identification information such as service identifiers, but considering the limited size of DCI, longer identification information may be placed in subsequent notification information 3.
  • notification information 2 carries indication information, service identifiers, etc.
  • the identification information is carried in the notification information 3 .
  • the information contained in the notification information 3 may be indication information, for example, may be part or all of the service identifier of the paging message notification service, the service type, and/or the identification information of the terminal device receiving the service.
  • the service identifier may include the MBS service ID, TMGI, G-RNTI, MBS session ID, or the PDUsession ID of the PDUsession used to transmit the multicast service, etc.
  • the service type may be information used to indicate the MBS service, such as 1-bit information to indicate whether the notification information 2 is related to the MBS service.
  • the service type may also indicate that the notified service is a broadcast service or a multicast service, etc., which is not limited.
  • the notification information 3 may be the paging message corresponding to the scheduling information.
  • the notification information 3 can also be considered as system information and/or MBS control information.
  • the MBS control information may be information transmitted through the MBS control channel, such as information transmitted through the (SC-)MCCH.
  • the indication information contained in the notification information 2 instructs the terminal device to read the system information and/or the MBS control information.
  • the system information and/or the MBS control information include MBS-related control configuration information
  • the service identifier may include the MBS service ID, TMGI, G-RNTI, and MBS session ID, or for transmitting multicast services.
  • the service type may be information used to indicate the MBS service, such as 1-bit information to indicate whether the notification information 2 is related to the MBS service, and the service type may also indicate that the notified service is a broadcast service or a multicast service.
  • the indication information carried in the notification information 1 and the notification information 2 may be an MBS indicator (MBS indicator), which is used to indicate (or represent or identify) that the notification information is used to notify the MBS service.
  • MBS indicator MBS indicator
  • the indication information in the notification information 2 may be included in a short message (short message) of the DCI.
  • the terminal device can For the indication information, (determine and) read the above-mentioned system information, and obtain the MBS service information in the system information.
  • the terminal device can read system information, or notification information 3, and obtain identification information such as a service identifier, so as to determine whether the MBS service is an MBS service that it is interested in.
  • the terminal device determines according to the above method that the MBS service notified by the first information is the MBS service that the terminal device is interested in and is receiving, the terminal device can use dedicated signaling, broadcast information (such as system information or MCCH information, etc.), etc.
  • broadcast information such as system information or MCCH information, etc.
  • the configuration information of the shown MBS service is acquired in the manner, and the data of the MBS service is (continuously) received.
  • the first information is scheduling information (scheduling information such as paging DCI), and the first information includes indication information, then identification information such as a service identifier can be carried in the first system information (such as a SIB) .
  • the first system information here may also be replaced with MCCH information, messages related to MBS services, or information corresponding to the first information.
  • the paging message corresponding to the scheduling information may not exist, or the paging message may not be sent, or the first information may not include information for scheduling the paging message, for example, if the first information is In the case of notification information 2 shown in FIG. 9B , notification information 3 shown in FIG. 9B does not exist.
  • the indication information carried by the first information may be 1 bit, for example, 0 or 1 is used to indicate whether the first information is related to the MBS service (or whether the first information is used for MBS service notification), or if the first information is When scheduling information, indicate whether the scheduled paging messages and the like are related to MBS services (or indicate whether the first information is used for MBS service notification).
  • the first system information may be MBS-related system information.
  • the first system information may include MBS information, such as service identifiers, service types, and/or identification information of terminal devices.
  • MBS information such as service identifiers, service types, and/or identification information of terminal devices.
  • a terminal device interested in the MBS service finds that the notification information 2 contains indication information, and will read the first system information to obtain the MBS information carried by the first system information.
  • the information of the MBS is related to the MBS service of the notification information 2, so that the terminal device determines this or these MBS services according to the information contained in the first system information. That is to say, the first system information only includes the information of the MBS service related to the notification.
  • the first system information may also indicate the deletion of MBS information, for example, to indicate the addition of a certain MBS service that is about to start, or to indicate the deletion of a certain MBS service that is about to end, and the terminal device determines the addition according to the indication of the first SIB information. Or delete the changed service as the first MBS service, and the terminal device can judge whether the first MBS service is related to itself according to its own interests.
  • the first system information may also indicate for which MBS service or services are notified.
  • the terminal device can judge its own behavior according to the service information. MBS received in the connected state, etc.); or, the terminal device can also obtain the service configuration and information from the broadcast information (for example, for the MBS that has high QoS requirements or is required to enter the connected state for service configuration and information reception, etc.), for example, The terminal device obtains service configuration, information and/or service data from the SIB or from the MBS service-related channels, such as MCCH and MTCH channels. In addition, it can also be implemented in the form of a combination of the above two methods. For example, the terminal device receives a part of the service and/or configuration from broadcast information or from an MBS service-related channel, and then enters the connected state to receive a part of the service and/or configuration.
  • the terminal device can pass other information in the indication information and/or notification information 2 information, to determine whether the notification information 2 is also used to notify other services, or contains other notifications. If the notification information 2 also contains other notifications, such as notifications containing ordinary unicast services, the terminal device needs to read the notification information 3, and determine whether the notification information 3 is related to itself through the identification of the terminal device in the notification information 3.
  • the DCI used to schedule the paging message includes MBS indication information, that is, the above notification information 2 includes MBS indication information.
  • the MBS indication information is used to indicate whether the DCI and/or the paging message is related to the MBS service.
  • the MBS indication information may be 1 bit, for example, 0 or 1 is used to indicate whether it is related to the MBS service.
  • the MBS indication information is included in the short message short message of the DCI of the scheduling paging message. If the terminal device is interested in the MBS service, it can read the relevant MBS service information according to the MBS indication information.
  • the MBS service information may be the service identifier of the MBS, and may include the MBS service ID, TMGI, G-RNTI, MBS session ID, or the PDUsession ID of the PDUsession used to transmit the multicast service, etc.
  • the terminal device determines, according to the MBS service information, whether the MBS service is an MBS service that it is interested in.
  • the MBS service information may be included in system information or MCCH information.
  • the MBS indicator (optional) and other indication information (such as existing indication information) in the DCI can be used to determine whether the notification information 2 is also used for other notifications. If the notification information 2 contains other notifications, such as ordinary unicast services, the UE needs to read the paging message, and determine whether the paging is related to itself through the UE identification information in the paging message.
  • version information such as a service identifier may be carried in a message (or information) scheduled by the first information.
  • the first information is notification information 2 shown in FIG. 9B
  • the service identifier is carried in notification information 3 shown in FIG. 9B.
  • the terminal device After receiving notification information 2, the terminal device needs to receive notification information 3.
  • the service identifier in information 3 determines whether the notified service is related to itself.
  • the notification information 2 can be understood as scheduling information of the paging message.
  • the notification information 3 is a paging message, and one of the functions of the notification information 2 is to schedule the notification information 3 .
  • the service information such as the service identifier of the MBS service can be located in the notification information 3 . Regardless of whether the terminal device is interested in the notified service, it needs to receive the notification information 3 after successfully monitoring the notification information 2, so as to determine whether the notification is related to itself according to the service information in the notification information 3.
  • the above MBS service information is included in the paging message.
  • the notification information 2 is a paging message.
  • the terminal device receives the DCI used to schedule the paging message, and receives the subsequent paging message.
  • the paging message may include the service identifier of the MBS, and may include the MBS service ID, TMGI, G-RNTI, MBS session ID, or for transmission The PDUsession ID of the PDUsession of the multicast service, etc.
  • the terminal device determines, according to the MBS service information, whether the MBS service is an MBS service that it is interested in.
  • the MBS service information may be included in system information or MCCH information.
  • the terminal device determines, according to the MBS service information, whether the MBS service is an MBS service that it is interested in.
  • the optional terminal device can receive the service and data (such as QoS requirements) by entering the connected state. Higher/required to enter the connected state to receive the MBS, etc.); you can also obtain service configuration and information from the broadcast information, such as SIB or MCCH, MTCH channel related information (such as higher QoS requirements/required to enter the connected state to receive) MBS, etc.); the above two methods can also be combined, such as obtaining part of the control configuration information of the MBS service through broadcast information, and then further entering the connection state to receive other configurations.
  • the service and data such as QoS requirements
  • the UE If the UE is not interested in the MBS service, it can use the MBS indication information (optional) and other indication information in the DCI (such as some existing indication information in the DCI) to determine whether the information 2 is also used for other notifications, if If other notifications are included, such as ordinary unicast services, the UE needs to read the paging message, and determine whether the paging is related to itself through the UE identification information in the paging message.
  • MBS indication information optional
  • other indication information in the DCI such as some existing indication information in the DCI
  • S402 The network device repeatedly sends multiple pieces of first information at N times.
  • N is an integer greater than or equal to 1.
  • the N occasions belong to the first cycle, or the multiple first messages carry the same version information, or, the multiple first messages carry the same version information.
  • the same version information is carried in the downlink control information/scheduling information.
  • the first information may be a paging message or other messages.
  • the downlink control information/scheduling information of the first information may be control information such as DCI for scheduling the first information.
  • the opportunity here may include PO, then the first information may include a paging message, or the first information may be included in a paging message; or, the opportunity may include a time domain location other than the paging opportunity (for example, outside the PO, the network device additional indicated time slots).
  • the way of determining the PO can refer to the description before this application, that is to say, the terminal device can still use the existing paging message monitoring mechanism, for example, the number of POs to be monitored in each DRX cycle is not increased. A PO needs to be monitored during the DRX cycle, and no additional power consumption is required.
  • the N occasions belong to the first cycle.
  • the first period is configurable, the optional first period is pre-configurable, or; the communication module further sends information for indicating the first period.
  • S403 The terminal device receives multiple pieces of first information at N times.
  • S404 The terminal device performs a first operation in response to a piece of first information.
  • the terminal device can perform the first operation only in response to one piece of first information. For example, the terminal device performs the first operation in response to the first received first information, and the subsequent terminal device receives the first information that satisfies the above conditions, and then does not perform the first operation. Alternatively, after receiving the first information for the first time in the first period, the terminal device does not receive the first information any more.
  • the terminal device receives new first information, if it is determined that the time interval between the new first information and the first information responded to by performing the first operation is less than the first period, or The downlink control information that carries different version information or the downlink control information of the first information and the downlink control information of the first information responded by performing the first operation carry different version information, then the terminal device can perform the second operation in response to the new first information.
  • the second operation may be the same as or different from the first operation.
  • the first operation may include the terminal device reading the paging message scheduled by the DCI to obtain the MBS service information.
  • the first operation may further include determining whether the terminal device is interested in the notified MBS service according to the MBS service information.
  • the first operation may further include the terminal device using dedicated signaling and/or broadcast information (eg, system information or MCCH information, etc.) and so on to obtain the configuration information of the MBS service, which is used to receive the data of the MBS service.
  • dedicated signaling and/or broadcast information eg, system information or MCCH information, etc.
  • the first operation may further include obtaining the modified configuration information of the MBS service through dedicated signaling and/or broadcast information.
  • the version information may be multiplexed with the MBS indication information.
  • the paging message indicating the DCI and/or the DCI scheduling is related to the MBS service, that is, the version information is used as the MBS indication information.
  • the first operation may include determining whether the terminal device is interested in the notified MBS service according to the MBS service information in the paging message.
  • the first operation may further include the terminal device using dedicated signaling and/or broadcast information (eg, system information or MCCH information, etc.) and so on to obtain the configuration information of the MBS service, which is used to receive the data of the MBS service.
  • dedicated signaling and/or broadcast information eg, system information or MCCH information, etc.
  • the first operation may further include obtaining the modified configuration information of the MBS service through dedicated signaling and/or broadcast information.
  • the first operation includes the terminal device requesting to establish an RRC connection with the network device, and obtaining the modified MBS when entering the RRC connection state.
  • the service configuration, or the terminal device receives the configuration of the MBS service through dedicated signaling, or the terminal device obtains the configuration of the MBS service through broadcast messages, such as system messages and/or MCCH messages. It may also be a combination of the above two manners, for example, the terminal device receives a part of the configuration of the MBS service through dedicated signaling, and receives a part of the configuration of the MBS service through a broadcast message.
  • the network device sends the first information multiple times, and the first information may be notification information, which can improve the reliability of sending the notification information. Moreover, the terminal device only needs to perform the first operation in response to one notification message, so as to avoid unnecessary processing and transmission overhead of the terminal device.
  • the notification information is, for example, notification information 2 and/or notification information 3 shown in FIG. 9B .
  • the version information may be carried in the scheduling information or in paging messages or other messages scheduled by the scheduling information.
  • the first information is scheduling information (such as notification information 2 shown in FIG. 9B ) including indication information (such as MBS indication)
  • the first information includes indication information, and identification information such as a service identifier It is carried in the first system information, MCCH information, messages related to the MBS service, or information corresponding to the first information.
  • the version information can be carried in the first information.
  • the first information is notification information 2 shown in FIG.
  • the notification information 2 is scheduling information and includes indication information, then identification information such as service identifiers can be carried in the first system information, MCCH information, messages related to MBS services, or Among the information corresponding to the first information, version information may be carried in the first information.
  • the terminal device can judge whether to receive the first system information, MCCH information, messages related to MBS services or information corresponding to the first information through the tag. For example, if the tag carried in the first information and the tag carried in the last received first information are system tags, the terminal device does not need to receive system information again, thereby reducing power consumption. If the tag carried in the first information is different from the tag in the last first information of the terminal device, the terminal device can receive the first system information, MCCH information, messages related to the MBS service, or information corresponding to the first information.
  • the first information is scheduling information (such as scheduling information of a paging message), and identification information such as a service identifier is carried in a message or information (such as a paging message) scheduled by the first information. If different first information is distinguished by carrying version information, the version information may be carried in the message or information scheduled by the first information.
  • the first information is the notification information 2 shown in FIG. 9B
  • the notification information 2 is scheduling information
  • identification information such as a service identifier and version information can be carried in the message scheduled by the notification information 2, and the message scheduled by the notification information 2 Such as notification message 3.
  • the terminal device can determine whether to receive the notification information 3 through the tag. For example, if the tag carried in the notification information 2 and the tag carried in the last received first information are the same tag, the terminal device does not need to receive the notification information 3 again, thereby reducing power consumption. If the tag carried in the notification information 2 and the tag carried in the last received first information are different tags, the terminal device receives the notification information 3 .
  • the terminal equipment interested in the MBS service can determine whether the notification is related to the service of interest to itself through identification information such as the service identifier included in the notification information 3; Only after receiving other information, such as the information related to the MCCH channel, can it be determined whether the notification is related to the service of interest, which is not limited here.
  • the content notified by the paging message carrying tag1 sent by the base station is the same, For example, it is used to notify the start of the MBS service and/or to notify the modification of the configuration of the MBS service.
  • the content notified by the paging message carrying tag2 sent by the base station is the same, for example, it is used for notifying the start of the MBS service and/or notifying the modification of the configuration of the MBS service.
  • the terminal device determines that the received multiple paging messages corresponding to the first modification all carry tag1, it only performs the first operation in response to one of the paging messages, which can save processing and signaling overhead and avoid the first operation. Repeated execution of an operation.
  • the tag can be several bits, such as 2 bits, and 4 different versions can be indicated in the form of [00 01 10 11]. It could also be [0 0 0], [0 1 0], [0 0 1] indicating 3 different versions, etc.
  • the form of tag can be an integer, such as [0...3], [1...4], without limitation.
  • the terminal device may determine whether the received first information is the same version as the previous first information by comparing the tag information, and decide whether to perform the first operation in response to the first information. If the tag is of a different version, it is determined that the first information is new first information, and a response is made. Optionally, the tag will have an upper limit. When the tag version information reaches the upper limit, it may cycle. For example, the version numbers corresponding to the multiple first messages sent are: 00 01 10 11 00 01 10..., as shown in Figure 9D shown.
  • the terminal device If the terminal device receives the first message with the tag of 00, in order to avoid the terminal device from missing too many first messages, it will mistake the very early first message with the tag of 00 as the same first message as the newly received first message. information, causing information to be discarded, will impose certain restrictions on the validity (or timeliness, validity) of the tag. For example, the terminal device does not receive the new first information within a certain period of time, and then responds when it receives the first information, that is, it does not determine that the two first information are the same according to the tag, or the tag becomes invalid after a period of time (or duration).
  • the terminal device receives the first information carrying tag1, and finds that tag1 is the same as the tag of the previous first information, but the time interval between the two first information exceeds the threshold, then responds to the newly received first information, etc. .
  • a period of time can be one frame, several subframes, several POs, several DRX cycles, or several modification periods, etc., without limitation.
  • the terminal device listens to the PO once per DRX cycle. information, the terminal device needs to perform the first operation in response to the received first information.
  • the terminal device may also not know the number of repetitions, and judges whether carrying the same tag indicates the same first information according to a preset time, such as the number of DRX cycles.
  • the tag information can also reuse the tag in SIB1.
  • the terminal device After receiving the scheduling information (ie, the first information) of the paging message including the indication information, the terminal device reads the system information. Specifically, the SIB1 may be read (immediately), and whether the MBS service is updated is confirmed according to the corresponding SIB in the SIB1 (for example, the version number of the multicast SIB). That is to say, if the MBS service changes, the content of the SIB will change, and the corresponding version number will be updated; if the MBS service does not change, the content of the SIB will not change, and the corresponding version number will not be updated.
  • the subsequent response behavior of the terminal device is the same as above.
  • the three paging messages in the first cycle are the same, and the contents of the three paging messages are the same, such as notification of service start and service configuration change. Wait.
  • the three paging messages in the third first cycle are the same, and are used to notify the same content, such as notification of service start, service configuration change, and the like. As shown in FIG. 7 , taking the first information as a paging message as an example, the three paging messages in the first cycle are the same, and the contents of the three paging messages are the same, such as notification of service start and service configuration change. Wait.
  • the three paging messages in the third first cycle are the same, and are used to notify the same content, such as notification of service start, service configuration change, and the like. As shown in FIG.
  • the terminal device within the same first cycle, after the terminal device successfully reads the paging message once or performs the first operation in response to the first paging message, it does not read other paging messages, or The first operation is no longer performed in response to other paging messages, which can save processing and signaling overhead and avoid repeated execution of the first operation.
  • step S204 the response manner of the terminal device to the first information may be performed with reference to the above description of step S404. That is to say, in S204, if the terminal device receives two pieces of first information carrying the same tag, it can decide whether to respond to the second piece of first information according to the above description.
  • FIG. 10 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication device is, for example, the communication device 1000 shown in FIG. 10 .
  • the communication apparatus 1000 includes a processing module 1010 and a communication module 1020 .
  • the communication apparatus 1000 may be a network device, or may be a chip applied in the network device or other combined devices, components, etc., which have the function of the network device.
  • the communication module 1020 may be a transceiver, the transceiver may include an antenna and a radio frequency circuit, etc.
  • the processing module 1010 may be a processor, such as a baseband processor, and the baseband processor may include one or more Central processing unit (central processing unit, CPU).
  • CPU Central processing unit
  • the communication module 1020 may be a radio frequency unit, and the processing module 1010 may be a processor, such as a baseband processor.
  • the communication module 1020 may be an input/output interface of a chip (eg, a baseband chip), and the processing module 1010 may be a processor of the chip system, which may include one or more central processing units.
  • the processing module 1010 in this embodiment of the present application may be implemented by a processor or a circuit component related to the processor, and the communication module 1020 may be implemented by a transceiver or a circuit component related to the transceiver.
  • the processing module 1010 may be configured to perform all operations except the transceiving operation performed by the network device in the embodiment shown in FIG. 4 , FIG. 9A or FIG. 9C , such as performing S201 , S302 , S304 , S306 and S401 , etc. steps, and/or other processes for supporting the techniques described herein, such as generating messages, information, and/or signaling sent by communications module to be processed.
  • the communication module 1020 can be used to perform all the receiving and transmitting operations performed by the network device in the embodiment shown in FIG. 4, FIG. 9A or FIG. 9C, such as S202, S303, S305, S307, S308, S309 and S402, and/or or other processes used to support the techniques described herein.
  • the communication module 1020 may be a functional module, and the functional module can complete both the sending operation and the receiving operation.
  • the communication module 1020 may be used to execute the network device in the embodiment shown in FIG. 4 , FIG. 9A or FIG. 9C .
  • the communication module 1020 can be considered as a sending module, and when performing a receiving operation, the communication module 1020 can be considered as a receiving module; or, the communication module 1020 can also be It is two functional modules, the communication module 1020 can be regarded as the general name of these two functional modules, these two functional modules are respectively a sending module and a receiving module, the sending module is used to complete the sending operation, for example, the sending module can be used to execute Figure 4 , All sending operations performed by the network device in the embodiment shown in FIG. 9A or FIG. 9C, the receiving module is used to complete the receiving operation, for example, the receiving module can be used to perform the embodiment shown in FIG. 4, FIG. 9A or FIG. 9C All receive operations performed by network devices in .
  • the processing module 1010 may determine the first information, where the first information is used to instruct to modify the configuration of the multicast/multicast service.
  • the communication module 1020 repeatedly sends the first information at N occasions, where N is an integer greater than or equal to 1.
  • the processing module 1010 may determine the first information, where the first information is notification information, such as a paging message.
  • the communication module 1020 repeatedly sends the first information at N occasions, where N is an integer greater than or equal to 1. Wherein, N occasions belong to the first cycle, or a plurality of pieces of first information include the same version information.
  • the first information includes identification information, where the identification information includes a service identification and/or is used to indicate that the first information is Repeatedly sent information (such as version information, or other information that is displayed or indicated to indicate that the first information is repeatedly sent).
  • the N occasions belong to the first cycle.
  • the first period is pre-configured, or; the communication module further sends information for indicating the first period.
  • the communication module may send the first timing to the M first terminal devices in at least one first timing among the N timings information, and sending the third information to the K second terminal devices in at least one second opportunity among the N occasions.
  • the at least one second opportunity is located after the at least one first opportunity
  • the M first terminal devices include the K second terminal devices, M>K (or M ⁇ K); the third information is used for Indicates to modify the configuration of this multicast/multicast service.
  • the M first terminal devices include terminal devices interested in the first multicast/multicast service and/or terminal devices that are receiving the first multicast/multicast service.
  • the communication module may send the first information to the M first terminal devices through broadcast or multicast, and, through multicast Or send the first information to the K second terminal devices by unicast.
  • the third information includes the first information.
  • the third information further includes identification information of the K second terminal devices, so as to implement targeted sending.
  • the communication module may receive response information from at least one third terminal device before the at least one second opportunity, and the response information uses to indicate that the first information is received.
  • the at least one third terminal device belongs to the M first terminal devices, but does not belong to the K second terminal devices.
  • the communication module may obtain the information of the M first terminal devices from the second network device or the M first terminal devices ;
  • the information of the M first terminal equipment includes the identification information of the M first terminal equipment, the information of the multicast/multicast service that the M first terminal equipment is interested in, or the M first terminal equipment At least one of the information of the multicast/multicast service being received.
  • the communication module may send the information of the M first terminal devices to the second network device.
  • the M first terminal devices belong to an idle state or an inactive state.
  • the communication apparatus shown in FIG. 10 can also be used to perform all operations performed by the terminal device in the embodiment shown in FIG. 4 or FIG. 9A except for the transceiving operation, such as steps S204, S310, S314 and S404, and /or other processes for supporting the techniques described herein, such as generating messages, information, and/or signaling sent by communications module 1020, and processing messages, information, and/or signaling received by communications module 1020.
  • the communication module 1020 can be used to perform all the receiving and sending operations performed by the terminal device in the embodiment shown in FIG. 4 , FIG. 9A or FIG. 9C , such as steps S203 , S311 , S312 and S403 and/or to support this document other procedures of the described techniques.
  • the communication module 1020 may be a functional module, and the functional module can complete both the sending operation and the receiving operation.
  • the communication module 1020 may be used to execute the embodiment shown in FIG. 4 , FIG. 9A or FIG. 9C by the terminal device.
  • the communication module 1020 can be considered as a sending module, and when performing a receiving operation, the communication module 1020 can be considered as a receiving module; or, the communication module 1020 can also be It is two functional modules, the communication module 1020 can be regarded as the general name of these two functional modules, these two functional modules are respectively a sending module and a receiving module, the sending module is used to complete the sending operation, for example, the sending module can be used to execute Figure 4 , All sending operations performed by the terminal device in the embodiment shown in FIG. 9A or FIG. 9C, the receiving module is used to complete the receiving operation, for example, the receiving module can be used to perform the embodiment shown in FIG. 4, FIG. 9A or FIG. 9C All receive operations performed by the terminal device in .
  • the communication module 1020 may receive one or more pieces of first information at N occasions, where the first information is used to instruct to modify the configuration of the multicast/multicast service, N is an integer greater than or equal to 1.
  • the processing module 1010 establishes a radio resource control RRC connection with the network device in response to the received first first information.
  • the communication module 1020 may receive a plurality of first information at N occasions, where the first information is notification information, such as a paging message.
  • the N opportunities belong to the first cycle, and N is an integer greater than or equal to 1.
  • the plurality of first pieces of information include the same version information.
  • the processing module 1010 may perform a first operation in response to a first message.
  • the first information includes identification information, where the identification information includes at least one item of service identification and version information.
  • the N occasions belong to the first cycle.
  • the first period is preconfigured, or the communication module may receive information indicating the first period.
  • the communication apparatus shown in FIG. 10 can also be used to perform all operations performed by the second network device in the embodiment shown in FIG. 9A except for the transceiving operation, such as steps such as maintaining the UE list of the base station, and/or using for other processes in support of the techniques described herein, such as generating messages, information and/or signaling sent by communications module 1020 and processing messages, information and/or signaling received by communications module 1020.
  • the communication module 1020 may be configured to perform all receive and transmit operations performed by the second network device in the embodiment shown in FIG. 9A , such as steps S304 and S305 and/or other processes for supporting the techniques described herein.
  • the communication module 1020 may be a functional module, and the functional module can perform both the sending operation and the receiving operation.
  • the communication module 1020 may be used to perform all the operations performed by the second network device in the embodiment shown in FIG. 9A .
  • Sending operation and receiving operation for example, when performing a sending operation, the communication module 1020 can be considered as a sending module, and when performing a receiving operation, the communication module 1020 can be considered as a receiving module; or, the communication module 1020 can also be two functions module, the communication module 1020 can be regarded as a general term for these two functional modules, these two functional modules are respectively a sending module and a receiving module, and the sending module is used to complete the sending operation, for example, the sending module can be used to execute Figure 4 or Figure 9A
  • the receiving module is used to complete the receiving operation.
  • the receiving module may be used to perform all the operations performed by the second network device in the embodiment shown in FIG. 9A .
  • the communication device may also only include a sending module and a receiving module.
  • the communication device is similar to the communication module 1020 above, and the communication device may be externally connected to the processing module 1010 .
  • the receiving module may receive information from M first terminal devices of the network device, where M is an integer greater than or equal to 1.
  • the sending module may send the information of the M first terminal devices to the network device.
  • the information of the M first terminal devices includes identification information of the M first terminal devices and information of the multicast/multicast service that the M first terminal devices are interested in and/or the M first terminals Information about multicast/multicast services the device is receiving.
  • the M first terminal devices belong to an idle state or an inactive state.
  • the receiving module may also receive information of P terminal devices from the third network device, where the information of the P terminal devices includes the identification information of the P terminal devices and the sense of the P terminal devices. Information of interested multicast/multicast services and/or information of multicast/multicast services being received by the P terminal devices; the M first terminal devices do not include the P terminal devices.
  • the apparatus 1100 includes one or more radio frequency units, such as a remote radio unit (RRU) 1110 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 1120 .
  • RRU remote radio unit
  • BBU baseband units
  • the RRU 1110 may be referred to as a transceiver module, and the transceiver module may include a transmission module and a reception module, or the transceiver module may be a module capable of transmitting and receiving functions.
  • the transceiver module may correspond to the communication module 1020 in FIG. 10 , that is, the transceiver module may perform the transceiver operation of the network device performed by the communication module 1020 .
  • the transceiver module may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1111 and a radio frequency unit 1112 .
  • the RRU 1110 is mainly used for sending and receiving radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending indication information to terminal equipment.
  • the BBU 1120 is mainly used for baseband processing and control of the base station.
  • the RRU 1110 and the BBU 1120 can be physically set together, or can be physically set apart, that is, a distributed base station.
  • the BBU 1120 is the control center of the base station, and can also be called a processing module, which can correspond to the processing module 1010 in FIG. 10 and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, etc.
  • Actions performed by processing module 1010 may be performed by a processing module.
  • a BBU processing module
  • the BBU 1120 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may respectively support wireless access networks of different access standards.
  • Network access such as LTE network, 5G network or other network.
  • BBU 1120 also includes memory 1121 and processor 1122.
  • the memory 1121 is used to store necessary instructions and data.
  • the processor 1122 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation flow of the network device in the foregoing method embodiments.
  • Memory 1121 and processor 1122 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the BBU 1120 may determine the first information, where the first information is used to instruct to modify the configuration of the multicast/multicast service.
  • the RRU 1110 repeatedly sends the first information at N occasions, where N is an integer greater than or equal to 1.
  • the BBU 1120 may determine the first information, which is notification information, such as a paging message.
  • the RRU 1110 repeatedly sends the first information at N occasions, where N is an integer greater than or equal to 1. Wherein, N occasions belong to the first cycle, or a plurality of pieces of first information include the same version information.
  • the first information includes identification information, where the identification information includes a service identification and/or is used to indicate that the first information is Repeatedly sent information (such as version information, or other information that is displayed or indicated to indicate that the first information is repeatedly sent).
  • the N occasions belong to the first cycle.
  • the first cycle is preconfigured, or; the RRU 1110 also sends information indicating the first cycle.
  • the RRU 1110 may send the first terminal device to the M first terminal devices in at least one first occasion among the N occasions information, and sending the third information to the K second terminal devices in at least one second opportunity among the N occasions.
  • the at least one second opportunity is located after the at least one first opportunity
  • the M first terminal devices include the K second terminal devices, M>K (or M ⁇ K); the third information is used for Indicates to modify the configuration of this multicast/multicast service.
  • the M first terminal devices include terminal devices interested in the first multicast/multicast service and/or terminal devices that are receiving the first multicast/multicast service.
  • the RRU 1110 may send the first information to the M first terminal devices through broadcast or multicast, and, through multicast Or send the first information to the K second terminal devices by unicast.
  • the third information includes the first information.
  • the third information further includes identification information of the K second terminal devices, so as to implement targeted sending.
  • the RRU 1110 may receive response information from at least one third terminal device before the at least one second opportunity, the response information using to indicate that the first information is received.
  • the at least one third terminal device belongs to the M first terminal devices, but does not belong to the K second terminal devices.
  • the RRU 1110 may obtain the information of the M first terminal devices from the second network device or the M first terminal devices ;
  • the information of the M first terminal equipment includes the identification information of the M first terminal equipment, the information of the multicast/multicast service that the M first terminal equipment is interested in, or the M first terminal equipment At least one of the information of the multicast/multicast service being received.
  • the RRU 1110 may send the information of the M first terminal devices to the second network device.
  • the M first terminal devices belong to an idle state or an inactive state.
  • An embodiment of the present application further provides a communication apparatus, where the communication apparatus may be a terminal device or a circuit.
  • the communication apparatus may be configured to perform the actions performed by the terminal device in the foregoing method embodiments.
  • FIG. 12 shows a schematic structural diagram of a simplified terminal device.
  • the terminal device takes a mobile phone as an example.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 12 only one memory and processor are shown in FIG. 12 . In an actual end device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal device (the transceiver unit may be a functional unit, and the function unit can realize the sending function and the receiving function; alternatively, the transceiver unit may also be It includes two functional units, namely a receiving unit capable of realizing a receiving function and a transmitting unit capable of realizing a transmitting function), and a processor with a processing function is regarded as a processing unit of the terminal device. As shown in FIG. 12 , the terminal device includes a communication unit 1210 and a processing unit 1220 .
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the communication unit 1210 may be regarded as a receiving unit, and the device for implementing the transmitting function in the communication unit 1210 may be regarded as a transmitting unit, that is, the communication unit 1210 includes a receiving unit and a transmitting unit.
  • the transceiver unit may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • the communication unit 1210 is configured to perform sending operations and receiving operations of the terminal device in the above method embodiments
  • the processing unit 1220 is configured to perform other operations on the terminal device in the above method embodiments except for the transceiving operations.
  • the communication unit 1210 may receive one or more pieces of first information at N occasions, where the first information is used to instruct to modify the configuration of the multicast/multicast service, N is an integer greater than or equal to 1.
  • the processing unit 1220 establishes a radio resource control RRC connection with the network device in response to the received first first information. For example, the processing unit 1220 generates and triggers the communication unit 1210 to send a request message for establishing an RRC connection to the network device.
  • the communication unit 1210 may receive a plurality of first information at N occasions, where the first information is notification information, such as a paging message.
  • the N opportunities belong to the first cycle, and N is an integer greater than or equal to 1.
  • the plurality of first pieces of information include the same version information.
  • the processing unit 1220 is configured to perform a first operation in response to a first piece of information.
  • the first information includes identification information, where the identification information includes at least one item of service identification and version information.
  • the N occasions belong to the first cycle.
  • the first period is preconfigured, or the communication module may receive information indicating the first period.
  • the communication device 1300 may include a communication interface 1301 , a memory 1302 and a processor 1303 .
  • the communication interface 1301 may be used for communication by a communication device, such as for sending or receiving signals by wire and/or wireless, so as to send and/or receive information, data, and messages.
  • the memory 1302 is coupled to the processor 1303, and is used for storing programs and data necessary for the communication device 1300 to realize various functions.
  • the processor 1303 is configured to support the communication apparatus 1300 to perform the processing functions performed by the session management network element in the above method, such as determining and generating information and messages sent by the communication interface 1301, and/or performing processing on signals received by the communication interface 1301. Demodulation and decoding, etc.
  • the above memory 1302 and processor 1303 can be integrated into one body or independent of each other.
  • the communication interface 1301 may include a wired communication interface, which may be used to support the communication device 1300 to receive and send signaling and/or data in a wired manner.
  • the communication interface 1301 may also be referred to as a transceiving unit or a communication unit, and may be regarded as a combination of a receiving unit and a transmitting unit.
  • the communication interface 1301 may include a wireless transceiver (eg, including a modem and/or an antenna) that may be used to support the communication device 1300 to wirelessly receive and transmit signaling and/or data.
  • Communication interface 1301 may also be referred to as a wireless transceiver or wireless communication unit.
  • the processor 1303 can be implemented by a processing chip or a processing circuit.
  • the communication interface can receive information from M first terminal devices of the network device, where M is greater than or equal to An integer of 1, and the information of the M first terminal devices can be sent to the network device.
  • the information of the M first terminal devices includes identification information of the M first terminal devices and information of the multicast/multicast service that the M first terminal devices are interested in and/or the M first terminals Information about multicast/multicast services the device is receiving.
  • the M first terminal devices belong to an idle state or an inactive state.
  • the communication interface may also receive information of P terminal devices from the third network device, where the information of the P terminal devices includes the identification information of the P terminal devices and the sense of the P terminal devices. Information of interested multicast/multicast services and/or information of multicast/multicast services being received by the P terminal devices; the M first terminal devices do not include the P terminal devices.
  • Embodiments of the present application provide a communication system.
  • the communication system may include the terminal device and the network device involved in the above-mentioned embodiment shown in FIG. 1 or FIG. 2 .
  • the communication system may further include the second network device involved in this application.
  • the communication system may implement the communication method of FIG. 4 , FIG. 9A or FIG. 9C .
  • Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and when the computer program is executed by a computer, the computer can implement FIG. 4 , FIG. 9A or FIG. 9C provided by the above method embodiments Processes related to the terminal device, the network device and/or the second network device in the illustrated embodiment.
  • Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program.
  • the computer program When the computer program is executed by a computer, the computer can implement the implementation shown in FIG. 4 , FIG. 9A or FIG. 9C provided by the above method embodiments.
  • the processes related to the terminal device, the network device and/or the second network device are not limited to the above method embodiments.
  • Embodiments of the present application further provide a chip or a chip system, where the chip may include a processor, and the processor may be configured to call a program or an instruction in a memory to execute the method shown in FIG. 4 , FIG. 9A or FIG. 9C provided by the above method embodiment.
  • the chip system may include the chip and other components such as memory or transceivers.
  • processors mentioned in the embodiments of the present application may be a CPU, and may also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGA Field programmable gate array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SCRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed communication method and communication device may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application.
  • the aforementioned computer-readable storage medium can be any available medium that can be accessed by a computer.
  • the computer-readable medium may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (electrically erasable programmable read-only memory) read only memory, EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, disk storage A medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • universal serial bus flash disk universal serial bus flash disk
  • removable hard disk or other optical disk storage
  • disk storage A medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

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Abstract

本申请提供一种通信方法及装置，使得网络设备确定第一信息，并在N个时机重复发送该第一信息，N为大于等于1的整数。其中，该第一信息用于指示修改多播/组播业务的配置。本申请增加了终端设备接收到第一信息的可能性，因此能够提高MBS业务的可靠性。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2020年09月17日提交中国专利局、申请号为PCT/CN2020/116008、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种通信方法及装置。
背景技术
长期演进(long term evolution，LTE)***下的多媒体广播多播业务(multimedia broadcast multicast service，MBMS in LTE)或者新无线(new radio，NR)***下的组播/多播广播业务(multicast broadcast service，MBS)主要适用于面向多个终端设备的业务，例如现场直播、定时播放节目等。多播传输技术是指MBS业务(包括MBS in LTE和/或MBSin NR)通过网络设备(如基站)同时向多个终端设备发送的技术。
目前，MBS业务的配置信息是由网络配置并发送给终端设备的。终端设备使用该配置信息接收感兴趣的MBS业务的业务数据(user data)。按照目前的MBS业务的配置更新方案，当网络设备对MBS业务的配置信息进行修改后，可广播MBS业务的配置信息有修改的通知，终端设备接收到该通知后可从网络重新获取配置信息，以便根据更新后的配置信息接收该MBS业务的数据。
然而目前该通知方式下终端设备有可能错过网络设备发送的MBS业务的配置信息有修改的通知，也就无法根据该通知获取更新的配置信息，导致终端设备接收MBS业务失败，因此MBS业务传输的可靠性有待提高。
发明内容
本申请实施例提供一种通信方法及装置，用于提高MBS业务传输的可靠性。
第一方面，提供一种通信方法。该方法可由第一通信装置执行，第一通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片。示例性地，第一通信装置为网络设备(如基站)，或者为设置在网络设备中的用于实现网络设备的功能的芯片，或者为用于实现网络设备的功能的其他部件。在下文的介绍过程中，以第一通信装置是网络设备为例进行说明。
该方法包括：网络设备确定第一信息，该第一信息用于指示修改多播/组播业务的配置。网络设备在N个时机重复发送该第一信息，N为大于等于1的整数。
采用以上方法，网络设备在多个时机重复发送该第一信息，增加了终端设备接收到第一信息的可能性，因此能够提高MBS业务的可靠性。
在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识和/或用于表示该第一信息是重复发送的信息(比如版本信息、或其他显示或指示地指示第一 信息是重复发送的信息)。当包括业务标识时，第一信息可指示出配置发生修改的MBS业务，以方便终端设备识别出自身感兴趣和/或正在进行的MBS业务，提高通知效率。当包括用于表示该第一信息是重复发送的信息时，可避免终端设备对于重复发送的多个第一信息响应多次，以节省信令开销和降低终端设备的功耗。
在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者；该网络设备还发送用于指示该第一周期的信息。采用该设计，可避免终端设备对于重复发送的多个第一信息响应多次，以节省信令开销和降低终端设备的功耗。
第二方面，提供一种通信方法。该方法可由第一通信装置执行，第一通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片。示例性地，第一通信装置为网络设备(如基站)，或者为设置在网络设备中的用于实现网络设备的功能的芯片，或者为用于实现网络设备的功能的其他部件。在下文的介绍过程中，以第一通信装置是网络设备为例进行说明。
该方法包括：
网络设备确定第一信息，并在N个时机重复发送多个该第一信息，N为大于等于1的整数，N个时机属于第一周期，或者，多个第一信息包括相同的版本信息，或者，多个第一信息的下行控制信息包括相同的版本信息，第一信息为寻呼消息。
采用以上方法，网络设备在多个时机重复发送该第一信息，增加了终端设备接收到第一信息的可能性，因此能够提高MBS业务的可靠性。
在一种可能的设计中，第一信息中包括业务标识。当包括业务标识时，第一信息可指示出配置发生修改的MBS业务，以方便终端设备识别出自身感兴趣和/或正在进行的MBS业务，提高通知效率。
在一种可能的设计中，该N个时机属于第一周期，该第一周期是预配置的；或者，网络设备还发送用于指示该第一周期的信息。采用该设计，可避免终端设备对于重复发送的多个第一信息响应多次，以节省信令开销和降低终端设备的功耗。
结合第一方面和第二方面，在一种可能的设计中，该网络设备可在该N个时机中的至少一个第一时机中向M个第一终端设备发送该第一信息，以及在该N个时机中的至少一个第二时机中向K个第二终端设备发送该第三信息。其中，该至少一个第二时机位于该至少一个第一时机之后，且该M个第一终端设备包括该K个第二终端设备，M>K(或M≥K)；该第三信息用于指示修改该多播/组播业务的配置。其中，该M个第一终端设备为包括对该第一多播/组播业务感兴趣的终端设备和/或正在接收该第一多播/组播业务的终端设备。
采用该设计，网络设备还可再次向第二终端设备再次发送通知消息，提高第二终端设备收到通知消息的可能性，进一步提高MBS业务可靠性。
结合第一方面和第二方面，在一种可能的设计中，该网络设备可通过广播或组播向该M个第一终端设备发送该第一信息，以及，通过组播或单播向该K个第二终端设备发送该第一信息。
采用该设计，当向第二终端设备发送第三信息时，可采用组播或单播方式以进行针对性发送，以提高第三信息的发送效率，同时不造成终端设备额外的电力消耗。
结合第一方面和第二方面，在一种可能的设计中，该第三信息包括该第一信息。
结合第一方面和第二方面，在一种可能的设计中，该第三信息还包括该K个第二终端 设备的标识信息，以实现针对性发送。
结合第一方面和第二方面，在一种可能的设计中，该网络设备在该至少一个第二时机之前，从至少一个第三终端设备接收响应信息，该响应信息用于指示接收到该第一信息。其中，该至少一个第三终端设备属于该M个第一终端设备，但不属于该K个第二终端设备。采用该设计，网络设备可向未发送第一信息的响应信息和/或未发起随机接入的第二终端设备再次发送通知消息，以再次向第二终端设备通知对于第一MBS业务的配置修改。
结合第一方面和第二方面，在一种可能的设计中，该网络设备从第二网络设备或者该M个第一终端设备，获得该M个第一终端设备的信息；其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息、该M个第一终端设备感兴趣的多播/组播业务的信息或者该M个第一终端设备正在接收的多播/组播业务的信息中的至少一个信息。采用该设计，网络设备可从第二网络设备接收M个第一终端设备的信息，因此可由第二网络设备对基站的终端设备的信息进行统一管理。
结合第一方面和第二方面，在一种可能的设计中，该网络设备向该第二网络设备发送该M个第一终端设备的信息。
结合第一方面和第二方面，在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。采用该设计，可针对性地提高处于空闲态或非激活态的终端设备的MBS业务可靠性。
第三方面，本申请提供一种通信方法。该方法可由第二通信装置执行，第二通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片。示例性地，该第二通信装置为终端设备，或者为设置在终端设备中的用于实现终端设备的功能的芯片，或者为用于实现终端设备的功能的其他部件。在下文的介绍过程中，以第二通信装置是终端设备为例进行说明。
该方法包括：终端设备在N个时机接收到一个或多个第一信息，该第一信息用于指示修改多播/组播业务的配置，N为大于等于1的整数。该终端设备响应于接收的第一个第一信息，建立与该网络设备的无线资源控制RRC连接。
在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识，版本信息中的至少一项。
在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者，该终端设备可接收用于指示该第一周期的信息。
以上第三方面及任一可能的设计的有益效果，可参照第一方面及其可能的设计的有益效果。
第四方面，本申请提供一种通信方法。该方法可由第二通信装置执行，第二通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片。示例性地，该第二通信装置为终端设备，或者为设置在终端设备中的用于实现终端设备的功能的芯片，或者为用于实现终端设备的功能的其他部件。在下文的介绍过程中，以第二通信装置是终端设备为例进行说明。
该方法包括：终端设备在N个时机接收到多个第一信息，N为大于等于1的整数，该N个时机属于第一周期，或者，该多个第一信息包括相同的版本信息，或者，该多个第一信息的下行控制信息包括相同的版本信息，该多个第一信息为寻呼消息。终端设备响应于一个该第一信息，执行第一操作。
在一种可能的设计中，该多个第一信息中包括业务标识。
在一种可能的设计中，该N个时机属于第一周期，该第一周期是预配置的，或者，该终端设备还可接收用于指示该第一周期的信息。
以上第四方面及任一可能的设计的有益效果，可参照第二方面及其可能的设计的有益效果。
第五方面，提供一种通信方法。该方法可由第三通信装置执行，第三通信装置可以是通信设备或能够支持通信设备实现该方法所需的功能的通信装置，例如芯片。示例性地，该第三通信装置为第二网络设备，例如核心网设备、数据存储节点或多播控制单元等设备、节点，或者为设置在第二网络设备中的芯片，或者为用于实现第二网络设备的功能的其他部件。在下文的介绍过程中，以第三通信装置是第二网络设备为例进行说明。
该方法包括：第二网络设备接收来自于网络设备的M个第一终端设备的信息，M为大于等于1的整数。该第二网络设备向该网络设备发送该M个第一终端设备的信息。其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息和该M个第一终端设备感兴趣的多播/组播业务的信息和/或该M个第一终端设备正在接收的多播/组播业务的信息。
在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。
在一种可能的设计中，第二网络设备还可接收来自于第三网络设备的P个终端设备的信息，该P个终端设备的信息包括该P个终端设备的标识信息和该P个终端设备感兴趣的多播/组播业务的信息和/或该P个终端设备正在接收的多播/组播业务的信息；该M个第一终端设备不包括该P个终端设备。
第六方面，提供一种通信装置，例如该通信装置为如前述的第一通信装置。该第一通信装置用于执行上述第一方面、第二方面或其任一可能的实施方式中的方法。具体地，该第一通信装置可以包括用于执行第一方面、第二方面或其任一可能的实施方式中的方法的模块，例如包括处理模块和通信模块。示例性地，通信模块可以包括发送模块和接收模块，发送模块和接收模块可以是不同的功能模块，或者也可以是同一个功能模块，但能够实现不同的功能。示例性地，该第一通信装置为通信设备，或者为设置在通信设备中的芯片或其他部件。示例性地，该通信设备为网络设备(如基站)。下面以第一通信装置是网络设备为例。例如，该通信模块可以通过收发器实现，该处理模块可以通过处理器实现。或者，发送模块可以通过发送器实现，接收模块可以通过接收器实现，发送器和接收器可以是不同的功能模块，或者也可以是同一个功能模块，但能够实现不同的功能。如果第一通信装置为通信设备，收发器例如通过通信设备中的天线、馈线和编解码器等实现。或者，如果第一通信装置为设置在通信设备中的芯片，那么收发器(或，发送器和接收器)例如为芯片中的通信接口，该通信接口与通信设备中的射频收发组件连接，以通过射频收发组件实现信息的收发。在第六方面的介绍过程中，继续以该第一通信装置是网络设备，以及，以该处理模块和该通信模块为例进行介绍。
其中，在执行上述第一方面所示方法时，处理模块可确定第一信息，该第一信息用于指示修改多播/组播业务的配置。通信模块在N个时机重复发送该第一信息，N为大于等于1的整数。
在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识和/或用于表示该第一信息是重复发送的信息(比如版本信息、或其他显示或指示地指示第一信息是重复发送的信息)。当包括业务标识时，第一信息可指示出配置发生修改的MBS业 务，以方便终端设备识别出自身感兴趣和/或正在进行的MBS业务，提高通知效率。当包括用于表示该第一信息是重复发送的信息时，可避免终端设备对于重复发送的多个第一信息响应多次，以节省信令开销和降低终端设备的功耗。
在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者；通信模块还发送用于指示该第一周期的信息。
在执行上述第二方面所示方法时，处理模块可用于确定第一信息。通信模块可用于在N个时机重复发送多个该第一信息，N为大于等于1的整数，该N个时机属于第一周期，或者，该多个第一信息包括相同的版本信息，或者，该多个第一信息的下行控制信息包括相同的版本信息，该第一信息为寻呼消息。
在一种可能的设计中，第一信息中包括业务标识。
在一种可能的设计中，该N个时机属于第一周期，该第一周期是预配置的；或者，通信模块还用于发送用于指示该第一周期的信息。
在执行上述第一方面、第二方面或其任一可能的设计时，通信模块可在该N个时机中的至少一个第一时机中向M个第一终端设备发送该第一信息，以及在该N个时机中的至少一个第二时机中向K个第二终端设备发送该第三信息。其中，该至少一个第二时机位于该至少一个第一时机之后，且该M个第一终端设备包括该K个第二终端设备，M>K(或M≥K)；该第三信息用于指示修改该多播/组播业务的配置。其中，该M个第一终端设备为包括对该第一多播/组播业务感兴趣的终端设备和/或正在接收该第一多播/组播业务的终端设备。
在执行上述第一方面、第二方面或其任一可能的设计时，通信模块可通过广播或组播向该M个第一终端设备发送该第一信息，以及，通过组播或单播向该K个第二终端设备发送该第一信息。
在执行上述第一方面、第二方面或其任一可能的设计时，该第三信息包括该第一信息。
在执行上述第一方面、第二方面或其任一可能的设计时，该第三信息还包括该K个第二终端设备的标识信息，以实现针对性发送。
在执行上述第一方面、第二方面或其任一可能的设计时，模块可在该至少一个第二时机之前，从至少一个第三终端设备接收响应信息，该响应信息用于指示接收到该第一信息。其中，该至少一个第三终端设备属于该M个第一终端设备，但不属于该K个第二终端设备。
在执行上述第一方面、第二方面或其任一可能的设计时，通信模块可从第二网络设备或者该M个第一终端设备，获得该M个第一终端设备的信息；其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息、该M个第一终端设备感兴趣的多播/组播业务的信息或者该M个第一终端设备正在接收的多播/组播业务的信息中的至少一个信息。
在执行上述第一方面、第二方面或其任一可能的设计时，通信模块可向该第二网络设备发送该M个第一终端设备的信息。
在执行上述第一方面、第二方面或其任一可能的设计时，该M个第一终端设备属于空闲态或者非激活态。
第七方面，提供一种通信装置，例如该通信装置为如前述的第二通信装置。该第二通信装置用于执行上述第三方面、第四方面或其任一可能的实施方式中的方法。具体地，该第二通信装置可以包括用于执行第三方面、第四方面或其任一可能的实施方式中的方法的 模块，例如包括处理模块和通信模块。示例性地，通信模块可以包括发送模块和接收模块，发送模块和接收模块可以是不同的功能模块，或者也可以是同一个功能模块，但能够实现不同的功能。示例性地，该第二通信装置为通信设备，或者为设置在通信设备中的芯片或其他部件。示例性地，该通信设备为终端设备。下面以第二通信装置是终端设备为例。例如，该通信模块可以通过收发器实现，该处理模块可以通过处理器实现。或者，发送模块可以通过发送器实现，接收模块可以通过接收器实现，发送器和接收器可以是不同的功能模块，或者也可以是同一个功能模块，但能够实现不同的功能。如果第二通信装置为通信设备，收发器例如通过通信设备中的天线、馈线和编解码器等实现。或者，如果第二通信装置为设置在通信设备中的芯片，那么收发器(或，发送器和接收器)例如为芯片中的通信接口，该通信接口与通信设备中的射频收发组件连接，以通过射频收发组件实现信息的收发。在第七方面的介绍过程中，继续以该第二通信装置是终端设备，以及，以该处理模块和该通信模块为例进行介绍。
其中，在执行上述第三方面所示方法时，通信模块可在N个时机接收到一个或多个第一信息，该第一信息用于指示修改多播/组播业务的配置，N为大于等于1的整数。该处理模块响应于接收的第一个第一信息，建立与该网络设备的无线资源控制RRC连接。
在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识，版本信息中的至少一项。
在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者，该通信模块可接收用于指示该第一周期的信息。
在执行上述第三方面所示方法时，通信模块可用于在N个时机接收到多个第一信息，N为大于等于1的整数，该N个时机属于第一周期，或者，该多个第一信息包括相同的版本信息，或者，该多个第一信息的下行控制信息包括相同的版本信息，该多个第一信息为寻呼消息。处理模块可用于响应于一个该第一信息，执行第一操作。
在一种可能的设计中，该多个第一信息中包括业务标识。
在一种可能的设计中，该N个时机属于第一周期，该第一周期是预配置的，或者，通信模块还可接收用于指示该第一周期的信息。
第八方面，提供一种通信装置，例如该通信装置为如前述的第三通信装置。该第三通信装置用于执行上述第五方面或其任一可能的实施方式中的方法。具体地，该第三通信装置可以包括用于执行第五方面或其任一可能的实施方式中的方法的模块，例如包括处理模块和通信模块。示例性地，通信模块可以包括发送模块和接收模块，发送模块和接收模块可以是不同的功能模块，或者也可以是同一个功能模块，但能够实现不同的功能。示例性地，该第三通信装置为通信设备，或者为设置在通信设备中的芯片或其他部件。示例性地，该通信设备为第二网络设备。下面以第三通信装置是第二网络设备为例。例如，该通信模块可以通过收发器实现，该处理模块可以通过处理器实现。或者，发送模块可以通过发送器实现，接收模块可以通过接收器实现，发送器和接收器可以是不同的功能模块，或者也可以是同一个功能模块，但能够实现不同的功能。如果第二通信装置为通信设备，收发器例如通过通信设备中的通信接口等实现。或者，如果第二通信装置为设置在通信设备中的芯片，那么收发器(或，发送器和接收器)例如为芯片中的通信接口，该通信接口与通信设备中的射频收发组件连接，以通过射频收发组件实现信息的收发。在第八方面的介绍过程中，继续以该第三通信装置是第二网络设备，以及，以该发送模块和该接收模块为例进 行介绍。
其中，在执行上述第五方面所示方法时，接收模块可接收来自于网络设备的M个第一终端设备的信息，M为大于等于1的整数。发送模块可向该网络设备发送该M个第一终端设备的信息。其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息和该M个第一终端设备感兴趣的多播/组播业务的信息和/或该M个第一终端设备正在接收的多播/组播业务的信息。
在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。
在一种可能的设计中，接收模块还可接收来自于第三网络设备的P个终端设备的信息，该P个终端设备的信息包括该P个终端设备的标识信息和该P个终端设备感兴趣的多播/组播业务的信息和/或该P个终端设备正在接收的多播/组播业务的信息；该M个第一终端设备不包括该P个终端设备。
第九方面，提供一种通信***，该通信***包括第六方面至第八方面中的至少两个通信装置。
第十方面，提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机指令，当计算机指令在计算机上运行时，使得计算机执行上述第一方面至第五方面或其任意一种可能的实施方式中的方法。
第十一方面，提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机指令，当计算机指令在计算机上运行时，使得计算机执行上述第一方面至第五方面或其任意一种可能的实施方式中的方法。
第十二方面，提供一种包含指令的计算机程序产品，计算机程序产品用于存储计算机指令，当计算机指令在计算机上运行时，使得计算机执行上述第一方面至第五方面或其任意一种可能的实施方式中的方法。
第十三方面，提供一种电路，电路与存储器耦合，电路用于读取并执行存储器中存储的程序以执行上述第一方面至第五方面或其任意一种可能的实施方式中的方法。
以上第五方面至第十三方面及其可能的设计所示方法的有益效果可参照第一方面或第二方面及其可能的设计中的有益效果。
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图1为本申请实施例提供的一种通信***的架构示意图；
图2为本申请实施例提供的另一种通信***的架构示意图；
图3为本申请实施例提供的一种通信方法的流程示意图；
图4为本申请实施例提供的另一种通信方法的流程示意图；
图5为本申请实施例提供的一种重复发送第一信息的示意图；
图6为本申请实施例提供的另一种重复发送第一信息的示意图；
图7为本申请实施例提供的另一种重复发送第一信息的示意图；
图8为本申请实施例提供的另一种重复发送第一信息的示意图；
图9A为本申请实施例提供的另一种通信方法的流程示意图；
图9B为本申请实施例提供的通知信息的发送过程示意图；
图9C为本申请实施例提供的另一种通信方法的流程示意图；
图9D为本申请实施例提供的另一种重复发送第一信息的示意图；
图10为本申请实施例提供的一种通信装置的结构示意图；
图11为本申请实施例提供的一种通信装置的结构示意图；
图12为本申请实施例提供的一种通信装置的结构示意图；
图13为本申请实施例提供的一种通信装置的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。方法实施例中的具体操作方法也可以应用于装置实施例或***实施例中。
如图1所示，本申请实施例提供的通信方法可应用于无线通信***，该无线通信***可以包括终端设备101以及网络设备102。
应理解，以上无线通信***既可适用于低频场景(sub 6G)，也可适用于高频场景(above6G)。无线通信***的应用场景包括但不限于第五代***、新无线(new radio，NR)通信***或未来的演进的公共陆地移动网络(public land mobile network，PLMN)***等。
以上所示终端设备101可以是用户设备(user equipment，UE)、终端(terminal)、接入终端、终端单元、终端站、移动台(mobile station，MS)、远方站、远程终端、移动终端(mobile terminal)、无线通信设备、终端代理或终端设备等。该终端设备101可具备无线收发功能，其能够与一个或多个通信***的一个或多个网络设备进行通信(如无线通信)，并接受网络设备提供的网络服务，这里的网络设备包括但不限于图示网络设备102。
其中，终端设备101可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的终端装置或者未来演进的PLMN网络中的终端装置等。
另外，终端设备101可以部署在陆地上，包括室内或室外、手持或车载；终端设备101也可以部署在水面上(如轮船等)；终端设备101还可以部署在空中(例如飞机、气球和卫星上等)。该终端设备101具体可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。终端设备101也可以是具有通信模块的通信芯片，也可以是具有通信功能的车辆，或者车载设备(如车载通信装置，车载通信芯片)等。
网络设备102可以是接入网设备(或称接入网站点)。其中，接入网设备是指有提供网络接入功能的设备，如无线接入网(radio access network，RAN)基站等等。网络设备102具体可包括基站(base station，BS)(如RAN基站)，或包括基站以及用于控制基站的无线资源管理设备等。该网络设备102还可包括中继站(中继设备)、接入点以及未来5G网络中的基站、未来演进的PLMN网络中的基站或者NR基站等。网络设备102可以是可穿戴设备或车载设备。网络设备102也可以是具有通信模块的通信芯片。
比如，网络设备102包括但不限于：5G中的下一代基站(g nodeB，gNB)、长期演进(long term evolution，LTE)***中的演进型节点B(evolved node B，eNB)、无线网络控制器(radio  network controller，RNC)、云无线接入网络(cloud radio access network，CRAN)***下的无线控制器、基站控制器(base station controller，BSC)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseBand unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心、全球移动通信***(global aystem for mobile communication，GSM)或码分多址(code division multiple access，CDMA)网络中的基站收发信台(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的节点基站(nodebase station，NB)，还可以是LTE中的演进型(evolutional)NB(eNB或eNodeB)，还可以是未来5G网络中的基站设备或者未来演进的PLMN网络中的接入网设备，还可以是可穿戴设备或车载设备。
此外，网络设备102可连接至核心网(core network，CN)设备，核心网设备可用于为接入网络设备102的终端设备101提供核心网服务。核心网设备在不同的***下课对应不同的设备。比如在3G中核心网设备可以对应通用分组无线服务技术(general packet radio service，GPRS)的服务支持节点(serving GPRS support node，SGSN)和/或GPRS的网关支持节点(gateway GPRS Support Node，GGSN)。在4G中核心网设备可以对应移动管理实体(mobility management entity，MME)和/或服务网关(serving gateway，S-GW)。在5G中核心网设备可以对应接入和移动性管理功能(access and mobility management function，AMF)、会话管理功能(session management function，SMF)或者用户面功能(user plane function，UPF)。
如图2所示，在本申请实施例中还可由网络设备向多个终端设备传输数据或控制信令，以实现多播/组播业务的传输。后续本申请中可将多播/组播业务简称为MBS业务。
示例性的，当进行MBS业务时，MBS业务的数据可以通过网络为终端设备建立专用的承载以单播(unicastor point to point，PTP)的形式由网络设备发送给终端设备，也可以通过建立MBS业务专用的承载以多播(multicast or point to multipoint，PTM)的形式发送给终端设备。当有大量终端设备需要接收某一MBS业务时，以单播PTP形式发送此业务需要为大量的终端设备建立专用承载，消耗资源；如果是以多播PTM的形式发送给终端设备，则只需要建立MBS用于PTM传输形式的承载，比如多播/组播(MBS)承载，则所有对该业务感兴趣的终端设备都可以通过这个承载接收该MBS业务，节约空口资源，提高频谱利用率，提高传输效率。
下面以图2所示网络设备和终端设备为例，结合图3所示流程对MBS业务的配置信息的更新方式进行说明。其中，图2所示终端设备可由上述终端设备101实现，图2所示网络设备可由上述网络设备102实现。
下面结合图3对MBS业务的开始、配置更新和终端设备执行小区选择等过程后恢复正在进行的(ongoing)MBS业务的流程进行说明。应理解，图3所示的流程基于以下假设进行：处于无线资源控制(radio resource control，RRC)空闲(IDLE)态或非激活(inactive)态的终端设备进入RRC连接态并通过专用信令接收MBS的配置信息，成功接收配置信息后，终端设备可以重新回到RRC空闲态或非激活态。
对于移动终止(mobile terminated，MT)模式，核心网可通过通知信息向终端设备进行业务开始，业务重激活，业务数据恢复，或业务的配置修改等通知，业务的配置修改可以包括业务调度模式的更改，比如点对点(point to point，PTP)和点对多点(point to multiple，PTM)之间的切换；可以用于接收业务数据的时频资源的更改，时频资源的更改比如部分 带宽(bandwidth part，BWP)、半静态调度(semi-persistent scheduling，SPS)的激活或去激活等，本申请不做限制。以下图3中以核心网向终端设备通知开始接收MBS业务且终端设备开始接收MBS业务为例进行说明。这里的开始接收MBS业务，包括新业务开始而进行的接收，和业务恢复而开始的接收等情况。其中，新业务开始是业务首次开始传输。业务恢复而开始的接收，又可理解为业务重激活或业务数据恢复，是业务开始传输后，但因为(一段时间)没有数据而停止/暂停传输，之后因为有数据到达/需要传输而恢复数据的传输。可选的，此时开始传输不需要终端设备重新在核心网进行注册。
该通知信息可以包含在寻呼消息(paging message)中，也可以包含在其他消息，本申请不做限定。可以理解的，在本申请各实施例中，如无特殊说明，通知信息是寻呼消息或其它类型的消息的描述方式，与该通知信息可以包含在寻呼消息或其它类型的消息的描述方式，表达的含义相同。图3中以寻呼消息为例进行说明。应理解，在实际应用中，图3所示的MBS业务可替换为车联网(vehicle to everything，V2X)业务或MBS业务以外的其他广播、组播业务。
如图3所示，对于移动终止(mobile terminated，MT)被呼模式，终端设备开始接收新MBS业务的流程可包括以下步骤：
S100：可选的，对MBS业务感兴趣的终端设备在核心网进行注册。
对MBS业务感兴趣的终端设备可以在核心网进行注册。可选的，将终端设备加入(join)会话(session)/组播组(MBS group)。可选的，对于组播/多播业务感兴趣的终端设备在核心网进行注册。可选的，对于广播业务感兴趣的终端设备，无需在核心网进行注册。
S101：核心网开始传输(某一)MBS业务。S101也可替换为：核心网即将开始传输(某一)MBS业务。
S102：核心网通过CN通知信息，比如寻呼消息，通知对此MBS业务感兴趣的终端设备新的MBS业务开始了，或者通知终端设备MBS业务的开始。以下以寻呼消息为例。可选的，如果MBS业务包含组播/多播业务，则网络设备感兴趣的通知对此业务感兴趣的终端设备；如果MBS业务包含广播业务，则网络设备感兴趣的通知所有终端设备MBS业务的开始，可选的，所有终端设备可以是进行广播业务的区域内的所有终端设备。终端设备可以包括RRC空闲态或非激活态的终端设备，也可以包括RRC连接态的终端设备。其中，为了确保接收到CN寻呼消息的终端设备可以确定此寻呼消息是用于通知终端设备感兴趣的MBS业务开始的，寻呼消息可包含该MBS的业务标识，比如临时移动组标识(temporary mobile group identity，TMGI)、MBS服务标识(MBS service ID)或者用于调度该MBS业务的无线网络临时标识，如组移动用户识别标识(group radio network temporary identifier，G-RNTI)、组播会话的标识(MBS session ID)、用于传输组播业务的协议数据单元(protocol data unit，PDU)session ID等。终端设备可以根据CN寻呼消息中的MBS的业务标识判断该MBS业务是否是自己感兴趣和/或正在接收的业务，以决定是否响应该寻呼消息。
S103：终端设备通过CN寻呼消息中的MBS的业务标识确定开始的新MBS业务是自己感兴趣的业务。
S104：终端设备响应于CN寻呼消息，处于RRC空闲态或非激活态的终端设备发起随机接入(random access，RA)，可选的，完成RRC连接的建立进入连接态。
S105：RRC连接建立成功后，基站向终端设备发送此MBS业务的配置信息，MBS 业务的配置信息可以通过专用RRC(dedicated RRC)信令发送至终端设备。另外一种可能的实施方式，基站通过MSG 4/MSG B向终端设备发送此MBS业务的配置信息。
S106：终端设备在接收到MBS业务的配置信息后，如果条件允许(例如，信道条件/质量达到要求)，则终端设备回到原状态(即RRC空闲态或非激活态)，在原状态接收此MBS的业务的数据信息。终端设备可以在确定条件允许(例如，信道条件/质量达到要求)的情况下，向网络设备发起请求，请求离开RRC连接态。也可以网络设备根据终端设备的测量结果等释放该终端设备的RRC连接。则终端设备可以回到原状态(即RRC空闲态或非激活态)，或者进入网络设备所指示的RRC状态，并在此状态接收此MBS的业务的数据信息。
此外，对于移动发起(mobile originated，MO)呼叫模式，终端设备可以通过已经储存的信息或者其他方式确定自己感兴趣的MBS业务开始播放。终端设备可以通过非接入层(non-access stratum，NAS)消息或其他流程从核心网获得感兴趣的MBS业务的开始时间、结束时间等信息，作为已经储存的信息。终端设备也可以从基站获得相应信息。终端设备可通过以下方式开始获得MBS业务的配置信息：
终端设备发起随机接入RA，建立RRC连接，并告知基站建立RRC连接的原因，例如，告知基站终端设备想要接收某一(些)MBS业务的数据信息，比如携带MBS业务的标识信息。在RRC连接建立成功后，基站向终端设备发送MBS业务的配置信息，终端设备在接收到配置信息后，如果条件允许(例如，信道条件/质量达到要求)，则终端设备回到原状态(即RRC空闲态或非激活态)，在原状态接收此MBS的业务的数据信息。另外一种可能的实施方式，基站通过MSG 4/MSG B向终端设备发送MBS业务的配置信息，则终端设备无需进入连接态。
另外如图3所示，当某个MBS业务已经开始播放后，基站可能会修改MBS业务的配置。为了保证终端设备能够在配置修改后继续接收此MBS业务，基站需要将修改后(或称更新后)的配置发给终端设备。修改后(或称更新后)的配置可以是MBS业务的配置的全部信息，也可以是MBS业务的配置更改了的信息，也可以是MBS业务的配置修改的相应delta信息，不做限定。基于图3所示流程的假设：MBS业务的配置信息通过专用信令传输，则基站需要通知终端设备MBS业务的配置更改，终端设备需要处于RRC连接态，并通过专用信令接收修改后的配置。对应的流程可包括以下步骤：
S107：基站发送寻呼消息，用于通知对于MBS业务的配置信息的修改。MBS业务配置修改可以视为基站行为，则用于通知终端设备MBS业务的配置更改的寻呼消息由基站触发，为RAN寻呼消息。
S108：终端设备接收到RAN寻呼消息，根据RAN寻呼消息中携带MBS业务标识，如MBS service ID、TMGI、G-RNTI、组播会话的标识(MBS session ID)、用于传输组播业务的协议数据单元(protocol data unit，PDU)session ID和/或其他信息确定此RAN寻呼消息为与自己相关的MBS业务的配置更改通知，比如是自己感兴趣或正在进行的MBS业务的配置更改通知。
S109：若RAN寻呼消息中携带的MBS业务标识为该的终端设备感兴趣和/或正在接收的业务，则终端设备进行RA，进入连接态。应理解，此时终端设备建立连接态所接入的基站可以是S104建立连接态的基站，或是其他基站，这里不进行具体限定。
S110：基站通过专用信令向终端设备发送此MBS业务修改后的配置信息。
S111：终端设备在接收到配置信息后，如果条件允许(例如，信道条件/质量达到要求)，则终端设备回到原状态(即RRC空闲态或非激活态)，或者进入基站指示的状态，在此状态接收此MBS的业务的数据信息。
另外，终端设备可能在一些场景下开始或继续正在进行的MBS业务。这些场景例如，终端设备进行了小区选择，开始接收正在进行的MBS业务；或者包括终端设备进行了小区重选，继续接收正在进行的MBS业务；或者，终端设备此前由于能力限制等原因，没有接收感兴趣的MBS业务，现在可以开始接收感兴趣的正在进行的MBS业务。
如图3所示，终端设备开始或继续正在进行的MBS业务的流程可包括以下步骤：
S112：终端设备进行RA，进入连接态。在一些场景下，进入连接态终端设备可以查询本小区是否存在其感兴趣的MBS业务。
其中，查询本小区是否存在其感兴趣的MBS业务时，终端设备可向网络设备发起请求，以请求获取网络设备支持、正在传输或将要开始传输的MBS业务列表。终端设备也可以向网络设备发送其感兴趣和/或正在接收的MBS业务列表，网络设备根据相应MBS业务是否为网络设备支持、正在传输、或将要开始传输的MBS业务，确定是否存在终端设备感兴趣的MBS业务。
S113：终端设备通过专用信令接收MBS业务的配置信息。
若网络设备支持、正在传输或将要开始传输终端设备感兴趣的MBS业务，则网络设备可以通过专用信令向该终端设备发送该MBS业务的配置信息，终端设备通过专用信令接收MBS业务的配置信息。
S114：终端设备在接收到配置信息后，如果条件允许(例如，信道条件/质量达到要求)，则终端设备回到原状态(即RRC空闲态或非激活态)，或者进入基站指示的状态，在此状态接收此MBS的业务的数据信息。
应理解，以上图3所示流程中的寻呼消息(如CN寻呼消息和/或RAN寻呼消息)中可以携带TMGI，通过TMGI计算寻呼时机(paging occasion，PO)以及寻呼帧(paging frame，PF)。寻呼消息均是发给小区内所有终端设备的，类似于***信息(system information，SI)变更对应的短消息寻呼(paging with short message for SI change)，而非用于通话建立的寻呼消息。寻呼消息(如CN寻呼消息和/或RAN寻呼消息)中也可以携带终端设备的UE ID，通过UE ID计算寻呼时机以及寻呼帧。寻呼消息可以是发给小区内所有终端设备的。但是由于通常接收MBS业务的终端数量较多，通过TMGI进行寻呼可以减小寻呼消息的大小(size)，节能口空资源，以下以寻呼消息携带TMGI为例进行说明。应理解，本申请中提及的TMGI或UE ID也可以替换为其他任何可以标识组播业务的信息，比如G-RNTI、MBS session ID或用于传输组播业务的PDU session ID等。
从终端设备对寻呼消息的监听角度来说，目前针对在RRC空闲态或非激活态的终端设备配置了非连续接收(discontinuous reception，DRX)的情况，终端设备在每个DRX周期(cycle)中监听一个PO以节能。其中，一个PO可包括一系列的PDCCH监听时机(monitoring occasions)，可以包含多个时隙。寻呼消息的下行控制信息(downlink control information，DCI)由寻呼无线网络临时标识(paging radio network temporary identifier，P-RNTI)加扰。
目前，PO的时域位置可以由终端设备标识(UEID)决定。
例如，由以下公式得到PF的SFN帧号：
(SFN+PF_offset)mod T＝(T div N)*(UE_ID mod N)。
由以下公式得到PO的i_s：
i_s＝floor(UE_ID/N)mod Ns。
i_s是一个PF对应的PO的编号，即某个终端设备的i_s就指示了该终端设备要接收该PF内的第i_s+1个PO内的寻呼消息。
寻呼帧和寻呼时机可以通过以下参数得出：
T：表示DRX周期，即寻呼周期。nB：值为4T、2T、T、T/2、T/4、T/8、T/16或T/32，表示高层配置参数。N：值为min(T,nB)，表示寻呼周期中寻呼帧的数目。Ns：为max(1,nB/T)，表示寻呼帧中寻呼子帧数目。UE_ID：值为IMSI mod 1024。IMSI为国际移动用户识别码(international mobile subscriber identity，IMSI)。mod表示取余运算。
此外，UE ID也可由TMGI、G-RNTI、MBS session ID或用于传输组播业务的PDU session ID等代替，代替信息可以是任意可标识MBS业务的信息。
终端设备在自己的PO位置收到寻呼消息后，根据寻呼消息中携带的信息，比如终端设备标识列表，确定此寻呼消息是否与自己有关。此外，PO的时域位置可由MBS业务标识(如TMGI)决定。
在时域上，终端设备在特定PO尝试接收寻呼消息，而在其他时域位置无需监听该寻呼消息。因此网络设备需要在PO所在的时域位置将寻呼消息从空口上发出，这样终端设备才有可能接收到寻呼消息。此外，用于通知MBS配置更新的寻呼消息可能只发送一次，一旦终端设备错过这个PO，则无法获知配置信息的更新。因此在网络设备使用更新后的MBS业务配置进行数据调度时，该终端设备可能无法接收MBS业务的数据，导致MBS业务中断。
S107所示的RAN寻呼消息采用以上寻呼机制，即需要在特定PO所在的是与位置进行发送，一旦终端设备错过该RAN寻呼消息，会导致终端设备无法正常接收MBS业务的数据信息，造成MBS业务中断。对于处于RRC空闲态和/或非激活态的终端设备而言，网络设备/基站无法感知终端设备处于某一小区。如果某一小区发生了MBS业务变更，对于错过该RAN寻呼消息的终端设备，基站无法感知。因此无法确保RRC空闲态和/或非激活态的终端设备可以收到MBS业务配置变成通知，MBS业务的可靠性有待提高。
为了提高MBS业务的可靠性，本申请实施例提供了一种通信方法。该通信方法可由网络设备和终端设备实施。其中，网络设备可包括接入网设备，例如图1所示网络设备102。终端设备可包括图1所示终端设备101。该方法可包括图4所示步骤：
S201：网络设备确定第一信息。
该第一信息可用于指示修改MBS业务的配置，或者说，该第一信息用于通知对于MBS业务的配置信息的修改。
其中，第一信息可包括可用于标识MBS业务的信息，可用于确定网络设备对于哪个MBS业务的配置信息进行了修改，以便终端设备确定是否响应于接收到的第一信息建立RRC连接。例如，第一信息可包括MBS业务的业务标识，如MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。
S202：网络设备在N个时机重复发送该第一信息。N为大于等于1的整数。
S203：终端设备在N个时机接收到一个或多个第一信息。
这里时机可包括PO，则第一信息可包括RAN寻呼消息，或者，第一信息可包含在寻呼消息中；或者，时机可包括寻呼时机以外的时域位置(如PO以外，网络设备额外指示 的时隙)。其中，PO的确定方式可参照前述说明，也就是说，终端设备仍可沿用现有的寻呼消息监听机制，比如不增加每个DRX周期内需监听的PO个数，在一个DRX周期内需要监听一个PO，不需要产生额外的功耗。
S204：终端设备响应于接收的第一个第一信息，建立与网络设备的RRC连接。
因此，终端设备可在建立RRC连接后，在RRC连接态接收该MBS业务的更新的配置信息，该更新的配置信息可用于终端设备接收该MBS业务的数据。其中，为了避免终端设备对多个第一信息进行相应，可令终端设备仅响应于接收到的第一个第一信息建立RRC连接。当接收到第一个第一信息后，终端设备可不在其他时机继续监听，或者说终端设备不对监听到的第一信息进行响应。
采用以上方法，网络设备在多个时机重复发送该第一信息，增加了终端设备接收到第一信息的可能性，因此能够提高MBS业务的可靠性。
S202中，为了令终端设备识别出重复发送的多个第一信息，网络设备可通过多种格式重复发送该第一信息，因此可以避免终端设备对多个第一信息进行多次响应。下面以网络设备是基站为例，举例几种可行的方式予以说明。应理解，不应认为以下所示实施例只能以基站实现，该基站也可替换为网络设备102的其他表现形式。
方式一，基站在第一信息中添加相同的标识信息，当终端设备接收到多个第一信息时，可根据该标识信息识别多个第一信息是重复发送的。或者，标识信息可携带在每个第一信息的下行控制信息或其他用于调度第一信息的控制信息中。
可选的，第一信息可包括显示的指示信息，比如可包括版本信息，版本信息是指示基站进行一次组播业务配置更新的信息，或者编号/标识信息：同一次配置更新对应于同一个编号/标识信息，一种可能的方式为，用一个或多个比特(bit)表示同一次配置更新；或者，第一信息可包括隐式指示，比如，组播业务配置更新信息、组播业务更新后的配置信息、组播业务配置信息，组播业务的delta配置；或者，第一信息可包括显示信息和隐式信息，比如，第一信息包括以上的一种或多种信息，可以是版本信息和组播业务配置更新信息等。
示例性的，基站所做的一次配置修改对应一个相同显示和/或隐式的指示信息，比如可包括版本信息，版本信息是指示基站进行一次组播业务配置更新的信息，或者编号/标识信息，下一次配置修改对应另外的显示和/或隐式的指示信息。
例如图5所示，以第一消息(第一消息是承载第一信息的消息)是寻呼消息(比如RAN寻呼消息)为例，若基站对正在进行/传输的MBS业务的配置先后做出两次修改，每个用于通知配置修改的寻呼消息重复3次。在第一信息不包括版本信息的情况下，如果一个终端设备收到多个对应于第一次修改的寻呼消息，会多次响应于寻呼消息，比如进行RA。但由于对应于第一次修改的寻呼消息均对应于相同的MBS业务配置信息的同一次修改，终端设备仅对该寻呼消息相应一次即可。基站可以在一次MBS业务配置修改流程中修改一个或多个MBS业务的配置。
沿用上例，当携带版本信息时，如图6所示，基站在对应于第一次修改的RAN寻呼消息中携带相同的版本信息，例如携带标志(tag)1；以及，基站在对应于第二次修改的RAN寻呼消息中携带相同的版本信息(且该信息与对应于第一次修改的RAN寻呼消息中携带相同的信息不同)，例如携带tag2。当终端设备确定其接收到的对应于第一次修改的多个RAN寻呼消息中均携带tag1，则只响应于其中一个RAN寻呼消息进行RA，可节省信令开销，节省口空资源，减轻基站负载，避免终端设备消耗额外电力，避免重复建立RRC连接。
方式二，基站向终端设备发送第二信息，第二信息用于配置第一周期，S202的N个时机属于同一个第一周期。在任意一个第一周期内所发送的第一信息的内容相同。或者说，基站在第一周期内重复发送该第一信息。反之，不同的第一周期内的多个第一信息的内容可以不同，或者说，可以对应于的不同MBS业务和/或不同次的配置修改，但也不排除相同的第一信息在多个第一周期内重复发送，对于一个MBS业务的同一次配置修改。
因此在同一个第一周期之内，终端设备接收的多个第一信息相同。在一个第一周期之内，对于一个终端设备而言，第一信息可以发送M次，M可由第一周期的长度和每次第一信息的时域位置共同确定。
可选的，基站可在发第一信息之前，发送第一周期的指示信息，第一周期的指示信息可以通过广播方式；也可以包含于多播配置中，通过广播方式或专用信令(dedicated RRC message)发送。例如，该指示信息用于指示第一周期的长度，可选的，还可用于指示偏移(offset)，用于终端设备根据第一周期的长度和偏移(如果配置)确定第一周期。若没有偏移的配置信息，则可认为偏移为0。
例如图7所示，以第一消息是RAN寻呼消息为例，若基站对正在进行/传输的MBS业务的配置先后做出两次修改，每个用于通知配置修改的RAN寻呼消息重复3次，两次修改相应的寻呼消息分别在两个第一周期之内。示例性的，图7所示的第一周期与配置更改周期相同。其中，基站在同一个配置更改周期内仅对同一个MBS业务的配置进行一次修改。
在同一个第一周期之内，终端设备检测网络设备发送的第一信息，当终端设备首次成功读取(接收到)第一信息后，响应于该第一信息进行RA，进入RRC连接态，并通过专有信令接收更新的MBS业务的配置信息，或者接收MBS业务的配置信息中的更新部分，或者MBS业务的配置信息的delta配置。如图8所示，在一个第一信息内，如果终端设备在第一次成功读取第一信息后，又再次读取到第一信息，则无需响应此第一信息，因此可节省信令开销，避免重复建立RRC连接。或者，如果终端设备在首次成功接收到第一信息后，在该同一个第一周期内，不再检测其它时机中的第一信息，此时，也可以进一步节省UE的能耗。或者，如果终端设备在首次成功接收到第一信息后，再次检测到携带相同指示信息的第一信息，则获知该第一信息是重复发送的，则不再读取该重复的第一信息的内容，也可以进一步节省UE的能耗。
示例性的，基站还可指示第二周期，该第二周期例如MBS业务的配置信息的发送周期，第一周期与第二周期均可通过第二信息配置。第一周期可以与第二周期长度相同和/或时域上重合。则此时，第一信息可指示从第二周期开始修改MBS业务的配置信息，其中，第一周期位于第二周期之前。因此，终端设备可在第二周期之前获取该MBS业务的更新的配置信息，从第二周期开始之后根据更新的配置信息接收MBS业务。
可选的，基站可在N个时机中的至少一个第一时机向M个第一终端设备发送该第一信息，该M个第一终端设备包括对MBS业务感兴趣的终端设备，和/或，正在接收MBS业务的终端设备。此外，在N个时机中的至少一个第二时机，向K个第二终端设备发送第三信息。其中，至少一个第二时机位于至少一个第一时机之后，且M个第一终端设备包括该K个第二终端设备。该第三信息可用于指示修改该MBS业务的配置，或者说，该第三信息用于通知对于MBS业务的配置信息的修改。
示例性的，第三信息可包括第一信息。或者，第三信息可包括该K个第二终端设备的标识信息，因此实现针对该K个第二终端设备通知对于MBS业务的配置的修改。
其中，该第一信息可通过广播或组播方式发送，第三信息可通过组播或单播方式发送。一种可能的实现方式为，第一信息通过广播方式发送，第三信息可通过单播或组播方式发送；或者，第一信息可通过组播方式发送，第三信息可通过单播或组播方式发送，以实现第三信息的针对性发送，避免向已接收到第一信息和/或无需接收第一信息和第三信息的终端设备发送第三信息，不造成终端设备额外的电力消耗，提高第三信息的发送效率。
其中，在发送第三信息之前，基站可接收来自于第三终端设备的接收响应信息，该接收响应信息用于指示发送接收响应信息的第三终端设备接收到该第一信息，和/或，基站可根据来自于第三终端设备的RA请求建立与第三终端设备之间的RRC连接，其中，第三终端设备属于M个第一终端设备，但不属于K个第二终端设备。
换句话说，K个第二终端设备不包括向基站发送该接收响应信息和/或根据第一信息向基站发起RA的第三终端设备，或者说，K个第二终端设备不包括向基站发送该接收响应信息和/或根据第一信息向基站发起RA的终端设备，再或者说，M个第一终端设备由K个第二终端设备和第三终端设备组成。因此，以上设计使得基站可确定M个第一终端设备是否都对第一信息进行了响应，如果有未进行响应的终端设备，则向未进行响应的终端设备发送第三信息，因此能够再次通知未接收到第一信息的终端设备该MBS业务的配置信息有修改，避免终端设备错过该MBS业务的配置修改通知，能够提高MBS业务的可靠性。
应理解，如果基站未接收到终端设备针对第三信息发送的接收响应信息，或在发送第三信息后仍未接收到部分终端设备的RA请求或响应信息，则基站可再次(或多次)向则向终端设备发送第三信息，直到全部的第一终端设备均发送接收响应信息或发起RA，以进一步提高可靠性。
其中，第三信息可通过单播或组播方式发送，包括第三信息通过单播发送，则第三信息可以携带某一/任意一个第二终端设备的UE ID，每一个第三信息携带一个第二终端设备的UE ID，发送给一个第二终端设备。第三信息可通过组播方式发送包括：第三信息可以携带全部或一部分第二终端设备的UE ID和/或多播业务标识(如MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等)，第三信息发送全部或一部分第二终端设备。对于第三信息携带一部分第二终端设备的UE ID的情况，为确保通知到所有第二终端设备，第三信息包含多个第三信息的子信息，第三信息的所有子信息包含了所有第二终端设备的UE ID。对于第三信息携带多播业务标识，第三终端设备可以不需要响应该第三信息，具体方法可以结合方式一和/或方式二所示方案。
可选的，基站可从核心网设备(或数据存储节点，多播控制单元，等设备、节点，以下称为第二网络设备)和/或第一终端设备，获取M个第一终端设备的信息。其中，若基站从第二网络设备接收第一终端设备的信息，则基站可在接收第一终端设备的信息之前，向第二网络设备发送第一终端设备的信息。比如，按照现有机制，若基站所管理的第一终端设备从RRC连接态进入RRC空闲态或非激活态，则基站会删除该终端设备的上下文，因此，基站无法获知该终端设备感兴趣和/或正在接收的MBS业务的信息(如MBS业务的标识信息、用于传输该MBS业务的会话的标识信息，比如，组播会话的标识信息(MBS session ID)，或用于传输MBS业务的PUD session的标识信息(如PUD session ID))，或者说基站无法获知对第一MBS业务感兴趣和/或正在接收第一MBS业务的处于RRC空闲态或非激活态的终端设备的信息。终端设备的信息可以为以下一项或多项：终端设备的标识信息，比如UE ID；终端信息感兴趣的和/或正在接收的组播业务信息，比如组播业务的TMGI、用于调度该组 播业务的RNTI(G-RNTI)、组播业务的service ID、组播会话标识信息(MBS Session ID)或用于传输MBS业务的PUD session的标识信息等。
当这些MBS业务的配置被修改后，基站无法有针对性的对这些终端设备进行提醒。而按照上述方案，基站可在终端设备进入RRC连接态后或在RRC连接态的过程中(RA过程中)获取到终端设备的信息，终端设备的信息可以包括该终端设备的信息和/或该终端设备感兴趣和/或正在接收的MBS业务的信息。基站可以向第二网络设备发送该终端设备的信息和/或该终端设备感兴趣和/或正在接收的MBS业务的信息。基站可以基于该终端设备离开RRC连接态，向第二网络设备发送上述信息，也可以在终端设备进入RRC连接态后或在RRC连接态的过程中(RA过程中)向第二网络设备发送上述信息，发送时机不做限制。
根据上述方法，第二网络可以获得对感兴趣和/或正在接收的MBS业务的终端设备的信息，终端设备可以是任意RRC状态，也可以是空闲态和/或非激活态。
当需要通知这些MBS业务的配置被修改时，基站可根据来自于第二网络设备的第一终端设备的信息针对第一终端设备进行通知，以提高可靠性。
对于正在接收MBS业务和/或对MBS业务感兴趣的RRC空闲态或非激活态的终端设备，如果发生小区重选，从第一小区移动至第二小区，并驻留于第二小区之后为获取该小区的MBS业务配置，需要进行RA和/或接入RRC连接态。以下以第四终端设备为例进行说明。上述过程中，该小区的服务基站可以获取该终端设备的信息。根据上述方法，基站可将第四终端设备的信息发送至第二网络设备，第二网络设备可以根据上报该信息的基站的标识和该信息中包含的终端设备信息，判断出第四终端设备已经离开第一小区并驻留于第二小区。第二网络设备基于上述信息更新每个基站所对应的终端设备列表，并将终端设备列表发送至相应的基站。基站得到更新的终端设备列表，列表包括对感兴趣和/或正在接收的MBS业务的终端设备的信息(即M个第一终端设备的信息)，终端设备可以是任意RRC状态，也可以是空闲态和/或非激活态。
以上第一终端设备可处于RRC空闲态或非激活态。例如，基站针对每个从RRC连接态进入RRC空闲态或非激活态的终端设备上报其标识信息和终端设备感兴趣和/或正在接收的MBS业务的信息，由第二网络设备获取该基站的终端设备列表(UElist)，该列表中可包括该基站上报的终端设备的标识信息和终端设备感兴趣和/或正在接收的MBS业务的信息。此外，该第二网络设备还可存储其他基站的UE list。第二网络设备可周期性(比如按照第一周期)或在有MBS业务的配置被修改后，向基站推送该基站所上报的终端设备的标识信息和终端设备感兴趣和/或正在接收的MBS业务的信息。由此基站可掌握小区内的全部处于RRC空闲态或非激活态的终端设备的标识信息和终端设备感兴趣和/或正在接收的MBS业务的信息，当MBS业务的配置被修改时，基站可根据上述信息确定对该MBS业务感兴趣的或者在接收该MBS业务的第一终端设备的信息，由基站根据第一终端设备的信息按照上述方式对第一终端设备进行通知，以针对性提高RRC空闲态或非激活态的终端设备的MBS业务的可靠性。
另外，处于RRC空闲态或非激活态在进行小区重选后，重选前所在小区所属的基站(以下称源基站)无法获知该终端设备的离开，该终端设备重选到的小区所属基站(以下称第三网络设备)是能够获知该终端设备的接入的。通过上述方法，第三网络设备可将该终端设备的标识信息和终端设备感兴趣和/或正在接收的MBS业务的信息发给第二网络设备，第 二网络设备会发现该终端设备的标识信息此前由源基站上报过，则可获知该终端设备的信息属于源基站的终端设备列表，可将该终端设备的信息从该源基站的终端设备列表中删除，因此不再向源基站发送该终端设备的信息，源基站不再需要向终端设备发送第一信息。
换句话说，第二网络设备除了接收来自于源基站的M个第一终端设备的信息，还可接收来自于第三网络设备的P个第五终端设备的信息，P个第五终端设备的信息可包括P个第五终端设备的标识信息和感兴趣和/或正在接收的MBS业务的信息。其中，当P个第五终端设备不包括第一终端设备(或M个第一终端设备不包括第五终端设备)时，第二网络设备可向源基站发送该M个第一终端设备的信息。否则，当M个第一终端设备与P个第五终端设备的范围出现交集时，第二网络设备向源基站发送的第一终端设备的信息不包括交集范围内的终端设备的信息。避免源基站对已经移出的终端设备进行通知，以节省信令开销。
图9A所示，当通过第二网络设备(如核心网设备)获取M个第一终端设备的信息时，本申请实施例提供的通信方法可包括如下步骤：
S301：M个第一终端设备建立与基站之间的RRC连接。
S302：基站获知M个第一终端设备的信息。
第一终端设备的信息包括第一终端设备的标识信息和/或第一终端设备感兴趣和/或正在接收的MBS业务的信息。
其中，第一终端设备的标识信息比如UE ID。第一终端设备感兴趣的MBS业务的信息，比如终端信息感兴趣的和/或正在接收的组播业务信息，比如第一终端设备感兴趣和/或正在接收的组播业务的TMGI、用于调度该组播业务的RNTI(如G-RNTI)、组播业务的service ID、组播会话标识信息(MBS Session ID)或用于传输MBS业务的PUD session的标识信息等。
S303：基站向第二网络设备发送M个第一终端设备的信息。
其中，基站可在第一终端设备进入RRC连接态后，或在RRC连接态的过程中(比如RA过程中)向第二网络设备发送第一终端设备的信息，或者可以基于第一终端设备离开RRC连接态(如第一终端设备进入空闲态或非激活态)，向第二网络设备发送第一终端设备的信息。
第二网络设备可维护该基站的UE list，其中包括第一终端设备的信息。
S304：当第一终端设备进入空闲态或非激活态，基站删除第一终端设备的信息。
比如，当任意一个或多个第一终端设备进入空闲态或非激活态后，基站删除进入空闲态或非激活态的第一终端设备的信息。
S305：第二网络设备向终端设备发送M个第一终端设备的信息。
其中，第一终端设备的信息的发送可按照周期进行，或者，可在接收到来自于基站的请求后进行，或者，可在基站下的小区内的第一终端设备发生变化时(或在基站下的小区内的第一终端设备发生变化后)进行。基站下的小区内的第一终端设备发生变化包括，有处于空闲态或非激活态的第一终端设备驻留于该小区，并在该小区发起RA用于接收组播业务的配置和/或数据，和/或，之前驻留于该小区的处于空闲态或非激活态的第一终端设备驻留于其他小区，并在其他小区发起RA用于接收组播业务的配置和/或数据。
示例性的，若基于周期发送第一终端设备的信息，则第二网络设备可按照周期向该基站发送该基站对应的UE list中的终端设备的信息，其中，该UE list中的终端设备的信息包括第一终端设备的信息。
另外，若基于基站的请求发送第一终端设备的信息，基站可在第一MBS业务的配置信息被修改后，向第二网络设备请求对第一MBS业务感兴趣或者正在进行第一MBS业务的终端设备的信息，比如，该请求中可携带第一MBS业务的标识信息，如第一MBS业务的MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。第二网络设备可基于该请求查询该基站的UE list以获得UE list中包括的对第一MBS业务感兴趣或者正在进行第一MBS业务的终端设备的信息，并向基站发送对第一MBS业务感兴趣或者正在进行第一MBS业务的终端设备的信息，比如，对第一MBS业务感兴趣或者正在进行第一MBS业务的终端设备的信息包括M个第一终端设备的信息。此时，第二网络设备向基站发送的第一终端设备的信息，可以是第一终端设备的标识信息，或者是第一终端设备的标识信息和第一终端设备感兴趣和/或正在进行的MBS业务的信息，其中，第一终端设备感兴趣和/或正在进行的MBS业务的信息包括但不限于该第一MBS业务。
S306：基站确定第一MBS业务的配置信息有修改。
比如，基站对该配置信息进行了修改，或者，核心网对该配置信息进行了修改并将修改通知基站。
S307：基站在N个时机中的至少一个第一时机向M个第一终端设备发送该第一信息。
其中，第一信息可用于指示修改第一MBS业务的配置信息，或者说，该第一信息用于通知对于第一MBS业务的配置信息的修改。第一信息可用于标识该第一MBS业务，比如第一信息中包括第一MBS业务的业务标识，如第一MBS业务的MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。
此外，第一信息中还可包括M个第一终端设备的标识信息。
示例性的，第一信息承载于寻呼消息。
S308：基站在N个时机中的至少一个第二时机向K个第二终端设备发送该第三信息。
其中，该第三信息可用于指示修改第一MBS业务的配置信息。比如，第三信息可包括第一信息的内容，如第一MBS业务的标识。第三信息可包括K个第二终端设备分别的标识信息。
在S308之前，基站可根据M个第一终端设备的信息以及发送第一信息的响应信息的终端设备的信息和/或向基站发起RA的终端设备的信息，确定未对第一信息进行响应的终端设备，即确定第二终端设备。
K个第二终端设备不包括向基站发送第一信息的接收响应信息和/或根据第一信息向基站发起RA的第三终端设备，或者说，K个第二终端设备不包括向基站发送第一信息的接收响应信息和/或根据第一信息向基站发起RA的终端设备，再或者说，M个第一终端设备由K个第二终端设备和第三终端设备组成，其中，第三终端设备为向基站发送第一信息的接收响应信息和/或根据第一信息向基站发起RA的终端设备。
可选的，在S308之前且在S307之后，基站还可接收来自于第三终端设备的该第一信息的接收响应信息，和/或，接收第三终端设备发起的RA请求，该RA请求用于请求建立RRC连接。
该S308为可选步骤。如果M个第一终端设备均发送了第一信息的信息和/或向基站发起RA，则跳过S308。
在S308之后，基站还可向K个第二终端设备中未发送第三信息的响应信息和/或未向基站发起RA的终端设备发送第四信息。如果K个第二终端设备均发送了第三信息的信息和/ 或向基站发起RA，则跳过该步骤。
其中，该第四信息可包括第一信息。该第四信息中，可携带终端设备的标识。
该第四信息的设置方式可参照第三信息。
此外，在发送该第四信息后，如果K个第二终端设备中仍有部分或全部第二终端设备未发送第四信息的响应信息和/或未向基站发起RA，则基站可再次或多次向未发送响应信息和/或未向基站发起RA的终端设备发送用于指示修改第一MBS业务的信息，直到基站确定K个第二终端设备均发送了第三信息的信息和/或向基站发起了RA。
采用图9A所示方法，基站可获知需要向M个第一终端设备发送用于指示修改第一MBS业务的配置信息的通知信息，当这些终端设备未发送响应信息或未发起RA时，基站可针对这些终端设备再次发送通知信息，因此，基站可根据M个第一终端设备的信息确保全部第一终端设备均接收到了通知消息，以提高MBS业务可靠性。
此外，在第一终端设备接收到用于指示修改第一MBS业务的信息后，可判断自身的RRC状态。其中，用于指示修改第一MBS业务的信息包括第一信息、第三信息或第四信息等。如果第一终端设备处于RRC连接态，则可在连接态接收来自于基站的第一MBS业务的配置信息。如果第一终端设备处于RRC空闲态或非激活态，则第一终端设备可基于用于指示修改第一MBS业务的信息向基站发起RA，以请求建立RRC连接，当RRC连接建立后，第一终端设备可接收来自于基站的第一MBS业务的配置信息。
在RRC连接建立后，基站可向第一终端设备发送第一MBS业务的配置信息。第一终端设备在接收第一MBS业务的配置信息后，可回到空闲态或非连接态，或者进入基站指示的RRC状态，并根据第一MBS业务接收第一MBS业务。
本申请实施例提供另一种通信方法，用于提高通知信息的传输可靠性。这里的通知信息可以包含在例如寻呼消息中，也可以包含在其他消息中，本申请不予具体限定。通知信息可用于通知业务开始传输或修改业务的配置。其中，这里的业务包括NR或未来网络***中的MBS业务，V2X业务或其他广播、组播或多播业务。本申请中，通知业务开始的通知信息或称业务通知信息，包括针对第一次开始的业务(或称首次开始的业务)的通知信息、针对非首次开始的业务的通知信息和针对修改业务的配置(或业务配置的修改)的通知信息等。业务通知信息可由核心网触发，经过接入网设备(如基站)发送给终端设备，或者，业务通知信息可由接入网设备触发。本申请中，触发通知信息是指生成并发送业务通知信息。后续以接入网设备为基站进行说明。
以业务为MBS业务为例，通知信息包括通知MBS业务开始、MBS业务变更或者修改业务的配置(或称业务配置的修改、业务配置修改通知)的消息。其中，业务开始的通知流程可参照图3所示。
其中，针对第一次开始的业务的通知信息是业务第一次开始时的通知。该通知可由核心网设备触发，经过基站发送至终端设备。
针对非首次开始的业务的通知信息是业务数据恢复(或业务重激活)时的通知，指示业务数据恢复传输或开始传输。可选的该业务通知可由核心网设备触发，经过基站发送至终端设备；也可以是基站触发通知信息，基站将通知信息发送至终端设备。该业务在恢复传输前或在本次开始传输前已经开始传输，但是由于一段时间没有数据传输等原因，业务会话可能被释放，或者多播/组播调度被释放，终端设备停止接收该业务，或者终端设备停止接收以多播/组播的形式传输的所述业务。如果业务数据恢复，终端设备需要继续接收该 业务，或者终端设备继续接收以多播/组播的形式传输的所述业务。此时，网络需要向终端设备发送该业务通知。
针对修改业务的配置的通知信息可用于通知业务配置的更改。比如，正在进行中的业务的配置发生更改，网络通过该通知信息通知业务配置的更改。修改业务的配置的通知可由基站向终端设备发送。
以通知信息为寻呼消息为例，目前，从基站发送至终端设备的寻呼消息的调度信息(如寻呼消息的DCI)中可以包含短消息(short message)。以调度信息是寻呼消息为例，短消息可包括***信息变更(systeminformationmodification)、地震海啸预警***(earthquake and tsunami warning system，etws)(indication)、商业移动警报服务(commercial mobile alert service，Cmas)和停止寻呼监听(stoppagingmonitoring)等指示。如果寻呼消息的调度信息只包括短消息，则可以不存在后续的寻呼消息，终端设备可以根据短消息的指示进行相应的行为，比如读取***消息和/或停止监听寻呼等。如果寻呼消息的调度信息指示存在用于调度寻呼消息的信息(如，调度信息中仅存在用于调度寻呼消息的信息，或调度信息中存在用于调度寻呼消息的信息和短消息)，则可以存在后续的寻呼消息。其中，寻呼消息可承载于PDSCH信道，需要相应的调度信息(如DCI)进行调度。
应理解，通知信息中还可包括必要的信息，用于表示通知的事件。比如，通知信息中可包括指示信息，可选的，指示信息用于指示业务后续的寻呼消息与所述业务相关，比如所述业务为MBS业务，则寻呼消息于MBS业务相关；可选的，指示信息用于指示业务开始，也可以指示业务首次或非首次开始，和/或指示业务配置修改的指示信息等。通知的事件可以是针对业务指示的，即通知信息针对某个业务指示通知的事件；或者，通知信息可以不区分业务指示通知的事件。
下面以图9B所示流程为例，说明通知信息的发送过程。
S101中的第一信息可包括如图9B所示的通知信息2和/或通知信息3。通知信息2和/或通知信息3可以是针对第一次开始的业务的通知信息、针对非首次开始的业务的通知信息和针对修改业务的配置的通知信息等。
图9B所示的通知信息1是核心网触发的通知信息，比如是CN通知信息。CN通知信息可以包含在寻呼消息中，如CN寻呼消息，也可以包含在其他类型的消息中，本申请不予具体限定。可选的，通知信息1中携带所述业务的标识信息。通知信息2可以是调度信息。通知信息3可以是调度信息所调度的消息。比如通知信息2为DCI，通知信息3为寻呼消息或其他类型的消息，该通知信息2可用于调度通知信息3。换句话说，在基站发送通知信息3之前，会发送相应的调度信息，即通知信息2。可选的，CN寻呼消息中可携带终端设备的标识信息，比如NG接口5G临时移动用户标识(serving-temporary mobile subscriber identity，ng-5G-S-TMSI)。
如图9B所示，如果第一信息是图示通知信息2，该通知信息2是调度信息且用于指示***信息变更，则可以不存在通知信息3，或者说，通知信息2中不包括用于调度通知信息3的信息，则不发送通知信息3。可选的，如果第一信息是图示通知信息2，该通知信息2是调度信息且用于指示调度通知信息3，通知信息3例如是一个RAN寻呼消息，则可能会存在通知信息3，可选的，此时终端设备可根据通知信息3中的终端设备的标识信息确定此次寻呼过程(或此RAN寻呼消息)是否与自己有关。可选的，RAN寻呼消息中可携带终端设备的标识信息，比如终端设备标识(UE-Identity，UE ID)。
以图3所示的MBS业务开始的通知信息的发送过程为例，可知目前业务的可靠性有待提高。为了提高业务可靠性，本申请实施例提供一种通信方法。该通信方法可包括如图9C所示流程：
S401：网络设备确定第一信息。
其中，第一信息例如通知信息。
另外，通知信息可包括S201所示的第一信息。
第一信息可由核心网设备触发，核心网触发通知信息，发送至基站，基站生成第一信息发送至终端设备，比如业务变更通知。
第一信息也可以是基站触发的，发送至终端设备，比如业务配置修改通知，对于RRC非激活态的终端设备的业务变更通知。
应理解，本申请中第一信息可以是寻呼消息，可选的，第一信息可以是CN寻呼消息或者其他核心网下发的通知信息触发的消息。其中，如果第一信息由基站触发，则第一信息可以是寻呼消息或其他类型的消息。可选的，其他类型的消息可以是专用信令(如dedicated RRC消息)，比如RRC重配置消息，RRC恢复消息，RRC重建立(reestablishment)消息等。可选的，其他类型的消息也可以是广播消息，比如***消息，多播控制消息(可以承载于多播控制信道，比如MCCH/SC-MCCH)等，不做限制。如果第一信息由核心网设备触发，则第一信息可以是CN寻呼消息，也可以是其他类型的消息。可选的，其他类型的消息可以是多播/广播业务通知信息等。由核心网发送至基站，基站发送至终端设备。
以图9B为例，第一信息可包括通知信息2或通知信息3中的部分或全部。
如图9B所示，通知信息1中可包含业务相关的信息或者业务相关的终端设备的信息。比如，通知信息1若是单播寻呼消息，则通知信息1可携带被寻呼的终端设备的标示信息，比如UE ID，5G-S-TMSI。通知信息1若是用于通知MBS业务或者其他通知的寻呼消息可能会包含指示信息。指示信息可包括寻呼消息通知业务的业务标识、业务类型(比如用于指示MBS业务的指示信息)、接收这个业务的终端设备的标识信息，或者提供业务的小区列表(cell list)或区域信息(area information)等，此处不做限制。基站基于该通知信息1可以确定通知信息1所对应的业务和/或终端设备，并向相关的终端设备发送通知信息2。或者，基站可基于自身决策而非基于来自于核心网的消息发送通知信息2，也就是说，图9B所示的通知信息1对于通知信息2的发送是可选的。通知信息2可包括通知信息1中的业务相关的信息、业务相关的终端设备的信息和/或指示信息中的部分或全部信息。
可选的，通知信息2可以是寻呼消息或用于调度寻呼消息的调度信息等。
如果通知信息2是寻呼消息，通知信息2中可包括指示信息。指示信息可以是所述寻呼消息通知业务的业务标识、业务类型和/或接收这个业务的终端设备的标识信息等中的部分或全部信息。以MBS业务为例，业务标识可包括MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。业务类型可以是用于指示MBS业务的信息，比如1bit的信息来指示通知信息2是否和MBS业务相关。业务类型也可以是指示通知的业务为广播业务和或组播业务等，不做限制。
通知信息2还可以是用于调度寻呼消息的调度信息，例如寻呼消息的调度信息(如paging DCI)或其他消息的调度信息。可选的，接收到该通知信息2之后，终端设备可能会接收该通知信息2所调度的通知信息3。通知信息2中可能会携带用于通知业务的指示信息，如MBS指示。该指示信息可参照前述说明。通知信息2也可能会包含业务标识等标识信息， 但是考虑到DCI的尺寸有限，比较长的标识信息可能会放在后续的通知信息3中，比如，通知信息2中携带指示信息，业务标识等标识信息携带在通知信息3中。通知信息3中所包含的信息可以是指示信息，比如可以是所述寻呼消息通知业务的业务标识、业务类型和/或接收这个业务的终端设备的标识信息等中的部分或全部信息。以MBS业务为例，业务标识可包括MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。业务类型可是用于指示MBS业务的信息，比如1bit的信息来指示通知信息2是否和MBS业务相关。业务类型也可以是指示通知的业务为广播业务和或组播业务等，不做限制。
应理解，如果通知信息2是寻呼消息的调度信息，则通知信息3可以是该调度信息所对应的寻呼消息。一些情况下，也可以认为通知信息3为***信息和或MBS控制信息。MBS控制信息可以是通过MBS控制信道传输的信息，比如通过(SC-)MCCH传输的信息。或者说通知信息2中包含的指示信息，指示终端设备读取***信息和或MBS控制信息。以MBS业务为例，所述***信息和或MBS控制信息包括MBS相关的控制配置信息，和或业务标识可包括MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。业务类型可是用于指示MBS业务的信息，比如1bit的信息来指示通知信息2是否和MBS业务相关，业务类型也可以是指示通知的业务为广播业务和或组播业务等。通知信息1和通知信息2中携带的指示信息可以是MBS指示(MBS indicator)，用于指示(或表示或标识)此通知信息用于通知MBS业务。以通知信息2是用于调度寻呼消息的DCI为例，通知信息2中的指示信息可以包含于DCI的短消息(short message)中，所述终端设备在接收到通知信息2后，可以根据该指示信息，(确定并)读取上述***信息，获得***信息中的MBS业务信息。比如，终端设备可读取***信息，或者说通知信息3，获得业务标识等标识信息，从而确定该MBS业务是否为自己感兴趣的MBS业务。
如果终端设备根据上述方式确定第一信息通知的MBS业务为所述终端设备感兴趣和或正在接收的MBS业务，终端设备可以通过专用信令、广播信息(比如，***信息或者MCCH信息等)等方式获取所示MBS业务的配置信息，(继续)接收所述MBS业务的数据。
在一种可能的示例中，第一信息为调度信息(调度信息例如paging DCI)，且第一信息中包含指示信息，则业务标识等标识信息可以承载于第一***信息(如一个SIB)中。应理解，这里的第一***信息也可替换为MCCH信息、MBS业务相关的消息或第一信息对应的信息。可选的，此情况下可以不存在该调度信息对应的寻呼消息，或者不发送寻呼消息，或者该第一信息中不包括用于调度寻呼消息的信息，比如，在第一信息为图9B所示的通知信息2时，不存在图9B所示的通知信息3。
本申请中，第一信息所携带的指示信息可以是1bit，如用0或1指示第一信息是否与MBS业务有关(或指示第一信息是否用于MBS业务通知)，或在第一信息为调度信息时，指示其调度的寻呼消息等是否与MBS业务相关(或指示第一信息是否用于MBS业务通知)。
第一***信息可以是MBS相关的***信息。比如第一***信息可能包含MBS的信息，如业务标识、业务类型和/或终端设备的标识信息等。对于MBS业务感兴趣的终端设备在收到通知信息2后发现其中包含指示信息，则将会读取第一***信息，从而获得第一***信息携带的MBS的信息。MBS的信息是相关于通知信息2的MBS业务，从而终端设备根据第一***信息中包含的信息确定这个或这些MBS业务。也就是说第一***信息中只包括和通知相关的MBS业务的信息。
另外，第一***信息也可以指示MBS的信息的删减，比如，指示增加某一即将开始的MBS业务，或指示删除某一即将结束的MBS业务，终端设备根据第一SIB信息的指示判断增加或删除变化的业务为第一MBS业务，终端设备并且可以根据自己的兴趣判断第一MBS业务是否与自己相关。第一***信息也可指示出针对哪个或哪些MBS业务进行通知。
如果终端设备确定第一***信息指示的MBS业务与自己相关，则终端设备可以根据业务信息等判断自身行为，比如终端设备可以通过进入连接态接收业务和数据(比如QoS要求较高或被要求进入连接态接收的MBS等)；或者，终端设备也可以从广播信息中取得业务配置和信息(比如，对于QoS要求较高或被要求进入连接态进行业务配置和信息接收的MBS等)，比如，终端设备从SIB或者从MBS业务相关信道，如MCCH、MTCH信道中取得业务配置、信息和或业务数据。此外，也可以采用上两种方式结合的形式实现，比如，终端设备从广播信息或从MBS业务相关信道接收一部分业务和/或配置，再进入连接态接收一部分业务和/或配置。
如果终端设备对于第一***信息指示的某个MBS业务不感兴趣，或终端设备确定第一***信息指示的MBS业务与自己不相关，则终端设备可通过指示信息和/或通知信息2中的其他信息，确定通知信息2是否还用于通知其他业务，或包含其他通知。如果通知信息2还包含其他通知，比如包含普通单播业务的通知，则终端设备需要读取通知信息3，通过通知信息3中的终端设备的标识确定此通知信息3是否和自己相关。
示例性的，以MBS业务为例，用于调度寻呼消息的DCI中包含MBS指示信息，也就是上述通知信息2中包含MBS指示信息。MBS指示信息用于指示DCI和/或寻呼消息是否于MBS业务相关。可选的，MBS指示信息可以是1bit，如用0或1指示是否与MBS业务有关。
可选的，MBS指示信息包含于调度寻呼消息的DCI的短消息short message中，如果终端设备对MBS业务感兴趣，则可以根据MBS指示信息读取相关的MBS业务信息。MBS业务信息可以是MBS的业务标识，可包括MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。终端设备根据所述MBS业务信息确定所述MBS业务是否为自己感兴趣的MBS业务。可选的，MBS业务信息可以包含于***信息或者MCCH信息中。
如果UE对于MBS业务不感兴趣，则可通过MBS indicator(可选的)以及DCI中的其他指示信息(如现有的指示信息)，确定通知信息2是否还用于其他通知。如果通知信息2包含其他通知，比如普通单播业务，则此UE需要读取paging message，通过paging message中UE标识信息确定此paging是否和自己相关。
在另一种可能的实现方式中，若第一信息为调度信息，则业务标识等版本信息可携带在第一信息所调度的消息(或信息)中。
例如图9B所示，第一信息为图9B所示的通知信息2，业务标识携带在图9B所示的通知信息3中，终端设备接收到通知信息2后，需要接收通知信息3，根据通知信息3中的业务标识判断通知的业务是否与自身相关。
在此场景下，通知信息2可理解为寻呼消息的调度信息。通知信息3为寻呼消息，通知信息2的功能之一是用于调度通知信息3。业务信息如MBS业务的业务标识等信息可位于通知信息3。无论终端设备是否对于被通知的业务感兴趣，都需要在成功监听通知信息 2后，收取通知信息3，才能根据通知信息3中的业务信息确定此通知是否与自己相关。
示例性的，上述MBS业务信息包含于寻呼消息中。本方案中，通知信息2为寻呼消息。终端设备收到用于调度寻呼消息的DCI，接收后续的寻呼消息，寻呼消息可以包括MBS的业务标识，可包括MBS service ID、TMGI、G-RNTI、MBS session ID，或用于传输组播业务的PDUsession的PDUsession ID等。终端设备根据所述MBS业务信息确定所述MBS业务是否为自己感兴趣的MBS业务。可选的，MBS业务信息可以包含于***信息或者MCCH信息中。终端设备根据所述MBS业务信息确定所述MBS业务是否为自己感兴趣的MBS业务。
基于以上两种实施方式，如果终端设备确定第一信息通知的MBS业务为所述终端设备感兴趣和或正在接收的MBS业务，可选的终端设备通过进入连接态接收业务和数据(比如QoS要求较高/被要求进入连接态接收的MBS等)；也可以从广播信息中，比如SIB或者MCCH，MTCH信道的相关信息取得业务配置和信息(比如QoS要求较高/被要求进入连接态接收的MBS等)；也可以以上两种方式结合，比如通过广播信息获取MBS业务的部分控制配置信息，再进一步进入连接态收取其他配置。
如果UE对于MBS业务不感兴趣，则可通过MBS指示信息(可选的)以及DCI中的其他指示信息(如DCI中的一些现有指示信息)，确定知信息2是否还用于其他通知，如果包含其他通知，比如普通单播业务，则此UE需要读取寻呼消息，通过寻呼消息中UE标识信息确定此寻呼是否和自己相关。
S402：网络设备在N个时机重复发送多个第一信息。
其中，N为大于等于1的整数。
为了避免终端设备对多个第一信息进行重复响应，可选的，该N个时机属于第一周期，或者，在多个第一信息中携带相同的版本信息，或者，在多个第一信息的下行控制信息/调度信息中携带相同的版本信息。
可选的，该第一信息可以是寻呼消息或其他消息。第一信息的下行控制信息/调度信息可以是用于调度第一信息的DCI等控制信息。
这里的时机可包括PO，则第一信息可包括寻呼消息，或者，第一信息可包含在寻呼消息中；或者，时机可包括寻呼时机以外的时域位置(如PO以外，网络设备额外指示的时隙)。可选的，PO的确定方式可参照本申请之前的说明，也就是说，终端设备仍可沿用现有的寻呼消息监听机制，比如不增加每个DRX周期内需监听的PO个数，在一个DRX周期内需要监听一个PO，不需要产生额外的功耗。
在一种可能的设计中，该N个时机属于第一周期。该第一周期是可配置的，可选的第一周期是预可配置，或者；通信模块还发送用于指示该第一周期的信息。
S403：终端设备在N个时机接收到多个第一信息。
S404：终端设备响应于一个第一信息，执行第一操作。
其中，如果终端设备判断多个第一信息之间的最大时间间隔小于第一周期、或多个第一信息携带相同的版本信息，或多个第一信息分别的下行控制信息携带相同的版本信息，则终端设备可只响应于一个第一信息执行第一操作。比如，终端设备响应于接收到的第一个第一信息执行第一操作，后续终端设备再接收到满足以上条件的第一信息，则不再执行第一操作。或者，在第一周期内首次接收到第一信息后，终端设备不再接收第一信息。
应理解，在执行第一操作后，终端设备接收到新的第一信息，如果判断该新的第一信 息与执行第一操作所响应的第一信息之间的时间间隔小于第一周期、或携带不同的版本信息或该第一信息的下行控制信息与执行第一操作所响应的第一信息的下行控制信息携带不同的版本信息，则终端设备可响应于该新的第一信息执行第二操作，第二操作可以与第一操作相同或不同。
下面具体说明第一操作包括的动作。
如果第一信息用于通知MBS业务开始(包括MBS业务首次开始和非首次开始)，在一种可能的示例中，以调度信息是用于调度寻呼消息的DCI为例，当版本信息携带在调度寻呼消息的DCI的短消息中，即第一信息是DCI，第一操作可包括终端设备读取该DCI调度的寻呼消息，获得MBS业务信息。此外，第一操作还可包括终端设备根据MBS业务信息判断是否对通知的MBS业务感兴趣。如果终端设备对MBS业务感兴趣，且DCI和/或寻呼消息用于通知业务开始，第一操作还可包括终端设备通过专用信令和/或广播信息(比如，***信息或者MCCH信息等)等获取该MBS业务的配置信息，用于接收MBS业务的数据。如果终端设备对MBS业务感兴趣，且DCI和/或寻呼消息用于通知修改业务的配置，第一操作还可包括通过专用信令和/或广播信息获取该MBS业务的修改的配置信息。
可选的，本申请中，版本信息可以和MBS指示信息复用。例如，当DCI中存在版本信息时，表示DCI和/或DCI调度的寻呼消息与MBS业务相关，即版本信息作为MBS指示信息。
如果第一信息用于通知MBS业务开始(包括MBS业务首次开始和非首次开始)，在另一种可能的示例中，以调度信息是用于调度寻呼消息的DCI为例，当版本信息携带在寻呼消息中，即第一信息是寻呼消息，第一操作可包括终端设备根据寻呼消息中的MBS业务信息，判断是否对通知的MBS业务感兴趣。如果终端设备对MBS业务感兴趣，且DCI和/或寻呼消息用于通知业务开始，第一操作还可包括终端设备通过专用信令和/或广播信息(比如，***信息或者MCCH信息等)等获取该MBS业务的配置信息，用于接收MBS业务的数据。如果终端设备对MBS业务感兴趣，且DCI和/或寻呼消息用于通知修改业务的配置，第一操作还可包括通过专用信令和/或广播信息获取该MBS业务的修改的配置信息。
可选的，如果第一信息为用于指示修改MBS业务的配置的消息，则可选的，第一操作包括终端设备请求建立与网络设备的RRC连接，并在进入RRC连接态获取修改的MBS业务的配置，或者说终端设备通过专用信令接收MBS业务的配置，或者终端设备通过广播消息，比如***消息和或MCCH消息获取MBS业务的配置。也可以是以上两种方式的结合，比如，终端设备通过专用信令接收MBS业务的一部分配置，并通过广播消息接收MBS业务的部分配置。
采用以上方法，网络设备多次发送第一信息，第一信息可以是通知信息，可提高通知信息发送的可靠性。并且，终端设备只需要响应于一个通知信息进行第一操作，避免终端设备不必要的处理和传输开销。通知信息例如图9B所示的通知信息2和/或通知信息3。
在S402的实施中，第一信息的发送方式可参照前述对于S202的说明。在通过版本信息标识相同的第一信息的方案中，版本信息可携带在调度信息或调度信息所调度的寻呼消息或其他消息中。
在一种可能的示例中，若第一信息为包括指示信息(如MBS指示)的调度信息(如图9B所示的通知信息2)，第一信息中包括指示信息，且业务标识等标识信息承载于第一***信息、MCCH信息、MBS业务相关的消息或第一信息对应的信息中，此时如果通过携带版本信息来区分不同的第一信息，则版本信息可携带于该第一信息中。例如，第一信 息为图9B所示的通知信息2，该通知信息2为调度信息且包含指示信息，则业务标识等标识信息可以承载于第一***信息、MCCH信息、MBS业务相关的消息或第一信息对应的信息中，版本信息可携带在第一信息中。
以版本信息为tag为例进行说明，如果tag位于第一信息中，则终端设备可以通过tag判断是否接收第一***信息、MCCH信息、MBS业务相关的消息或第一信息对应的信息。比如，第一信息携带的tag与上一次接收到的第一信息携带的tag为***的tag，则终端设备无需再接收***信息，从而降低功耗。如果第一信息携带的tag与终端设备上一次的第一信息中的tag不同，则终端设备可接收第一***信息、MCCH信息、MBS业务相关的消息或第一信息对应的信息。
在另一种可能的示例中，第一信息为调度信息(如寻呼消息的调度信息)，且业务标识等标识信息携带在第一信息调度的消息或信息(如寻呼消息)中，此时如果通过携带版本信息来区分不同的第一信息，则版本信息可携带于第一信息调度的消息或信息中。如，第一信息为图9B所示的通知信息2，该通知信息2为调度信息，则业务标识等标识信息和版本信息可以承载于通知信息2所调度的消息中，通知信息2调度的消息如通知信息3。
其中，如果tag位于图9B所示的通知信息2中，则终端设备可以通过tag判断是否接收通知信息3。比如，通知信息2携带的tag与上一次接收到的第一信息携带的tag为同一个tag，则终端设备无需再接收通知信息3，从而降低功耗。如果通知信息2携带的tag与上一次接收到的第一信息携带的tag为不同的tag，则终端设备接收通知信息3。可选的，对于MBS业务感兴趣的终端设备可以通过通知信息3所包含的业务标识等标识信息确定此通知是否与自己感兴趣的业务相关；或者，终端设备也可能接收通知信息3后，需要再接收其他信息，比如MCCH信道相关的信息，才能确定此通知是否与自己感兴趣的业务相关，此处不做限制。
例如图6所示，以网络设备是基站、且第一信息为寻呼消息(或者说，第一信息包括寻呼消息)为例，基站发送的携带tag1的寻呼消息所通知的内容相同，如用于通知MBS业务开始和/或通知修改MBS业务的配置等。另外，基站发送的携带tag2的寻呼消息所通知的内容相同，如用于通知MBS业务开始和/或通知修改MBS业务的配置等。当终端设备确定其接收到的对应于第一次修改的多个寻呼消息中均携带tag1，则只响应于其中一个寻呼消息进行第一操作，可节省处理和信令开销，避免第一操作的重复执行。
应理解，版本信息的设置方式可参照S202中的说明。
其中，以版本信息是tag为例，tag可以是几个比特，比如2比特，通过[00 01 10 11]形式可以指示4种不同的版本。也可能是[0 0 0],[0 1 0]，[0 0 1]指示3种不同的版本等。tag的体现形式可以为整数，比如[0…3],[1…4]，不做限制。当tag通过第一信息携带时，终端设备根据tag确定第一信息的版本。
在S404的执行中，终端设备可通过比较tag信息确定接收到的第一信息是否与前一个第一信息为同一版本，决定是否对响应于第一信息执行第一操作。如果tag为不同版本，则确定第一信息为新的第一信息，进行响应。可选的，tag会有上限值，当tag版本信息达到上限后，可能会循环，比如发送的多个第一信息对应的版本号分别为：00 01 10 11 00 01 10…，如图9D所示。如果终端设备收到tag为00的第一信息，为避免终端设备因错过过多的第一信息，而误将很早的tag为00的第一信息误认为和新收到的为同一第一信息，造成信息丢弃，将对tag的有效性(或时效性、有效期)采取一定的限制。比如终端设备在一定时间内没有 收到新的第一信息，再接收到第一信息则进行响应，也就是不根据tag决定两个第一信息相同，或者说tag过一段时间(或时长)失效；或者，终端设备接收到携带tag1的第一信息，发现tag1和上一个第一信息的tag相同，但是两条第一信息相隔的时间超过阈值，则对新接收到的第一信息进行响应等。一段时间可以是一个帧、几个子帧、几个PO、几个DRX cycle或者几个调整周期(modification period)等，不做限制。
具体的，比如终端设备知道第一信息重复3次，按照现有技术，终端设备每个DRX cycle听一次PO，若相隔3个及以上的DRX cycle收到带有相同tag的第一信息为不同的信息，则终端设备需要进行响应接收到的第一信息进行第一操作。终端设备也可以不知道重复次数，根据预设的时间，比如DRX cycle个数等判断携带相同的tag是否指示相同的第一信息。
tag信息也可以复用SIB1中的tag。具体的，终端设备在收到包含指示信息的寻呼消息的调度信息(即第一信息)后，读取***信息。具体的可以是(立刻)读取SIB1，根据SIB1中的相应SIB(比如多播SIB的版本号)确认MBS业务是否有更新。也就是说，如果MBS业务变化，SIB的内容会变化，相应的版本号会更新；如果MBS业务无变化，则SIB的内容无变化，相应的版本号无更新。终端设备的后续响应行为同上。
又如图7所示，以第一信息是寻呼消息为例，第一个周期内的三个寻呼消息相同，该三个寻呼消息通知的内容相同，如通知业务开始、业务配置变更等。另外，第三个第一周期内的三个寻呼消息相同，用于通知相同的内容，如通知业务开始、业务配置变更等。如图8所示，在同一个第一周期之内，终端设备成功读取一次寻呼消息或响应于第一个寻呼消息执行第一操作后，不再读取其他的寻呼消息，或不再响应于其他的寻呼消息执行第一操作，可节省处理和信令开销，避免第一操作的重复执行。
应理解，步骤S204中，终端设备对于第一信息的响应方式可参照以上对于步骤S404的说明执行。也就是说，在S204中，如果终端设备接收到两个携带相同tag的第一信息，可按照以上说明决定是否对第二个第一信息进行响应。
下面结合附图介绍本申请实施例中用来实现上述方法的通信装置。因此，上文中的内容均可以用于后续实施例中，重复的内容不再赘述。
图10为本申请实施例提供的通信装置的示意性框图。示例性地，通信装置例如为图10所示的通信装置1000。
通信装置1000包括处理模块1010和通信模块1020。示例性地，通信装置1000可以是网络设备，也可以是应用于网络设备中的芯片或者其他具有网络设备功能的组合器件、部件等。当通信装置1000是网络设备时，通信模块1020可以是收发器，收发器可以包括天线和射频电路等，处理模块1010可以是处理器，例如基带处理器，基带处理器中可以包括一个或多个中央处理单元(central processing unit，CPU)。当通信装置1000是具有上述网络设备功能的部件时，通信模块1020可以是射频单元，处理模块1010可以是处理器，例如基带处理器。当通信装置1000是芯片***时，通信模块1020可以是芯片(例如基带芯片)的输入输出接口、处理模块1010可以是芯片***的处理器，可以包括一个或多个中央处理单元。应理解，本申请实施例中的处理模块1010可以由处理器或处理器相关电路组件实现，通信模块1020可以由收发器或收发器相关电路组件实现。
例如，处理模块1010可以用于执行图4、图9A或图9C所示的实施例中由网络设备所执行的除了收发操作之外的全部操作，例如执行S201、S302、S304、S306和S401等步骤，和/或用于支持本文所描述的技术的其它过程，比如生成由通信模块1020发送的消息、 信息和/或信令，和对由通信模块1020接收的消息、信息和/或信令进行处理。通信模块1020可以用于执行图4、图9A或图9C所示的实施例中由网络设备所执行的全部接收和发送操作，例如S202、S303、S305、S307、S308、S309和S402，和/或用于支持本文所描述的技术的其它过程。
另外，通信模块1020可以是一个功能模块，该功能模块既能完成发送操作也能完成接收操作，例如通信模块1020可以用于执行图4、图9A或图9C所示的实施例中由网络设备所执行的全部发送操作和接收操作，例如，在执行发送操作时，可以认为通信模块1020是发送模块，而在执行接收操作时，可以认为通信模块1020是接收模块；或者，通信模块1020也可以是两个功能模块，通信模块1020可以视为这两个功能模块的统称，这两个功能模块分别为发送模块和接收模块，发送模块用于完成发送操作，例如发送模块可以用于执行图4、图9A或图9C所示的实施例中由网络设备所执行的全部发送操作，接收模块用于完成接收操作，例如接收模块可以用于执行图4、图9A或图9C所示的实施例中由网络设备所执行的全部接收操作。
其中，在执行图4或图9A所示方法时，处理模块1010可确定第一信息，该第一信息用于指示修改多播/组播业务的配置。通信模块1020在N个时机重复发送该第一信息，N为大于等于1的整数。
在执行图9C所示方法时，处理模块1010可确定第一信息，该第一信息为通知信息，例如寻呼消息。通信模块1020在N个时机重复发送该第一信息，N为大于等于1的整数。其中，N个时机属于第一周期，或者多个第一信息包括相同的版本信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识和/或用于表示该第一信息是重复发送的信息(比如版本信息、或其他显示或指示地指示第一信息是重复发送的信息)。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者；通信模块还发送用于指示该第一周期的信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，通信模块可在该N个时机中的至少一个第一时机中向M个第一终端设备发送该第一信息，以及在该N个时机中的至少一个第二时机中向K个第二终端设备发送该第三信息。其中，该至少一个第二时机位于该至少一个第一时机之后，且该M个第一终端设备包括该K个第二终端设备，M>K(或M≥K)；该第三信息用于指示修改该多播/组播业务的配置。其中，该M个第一终端设备为包括对该第一多播/组播业务感兴趣的终端设备和/或正在接收该第一多播/组播业务的终端设备。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，通信模块可通过广播或组播向该M个第一终端设备发送该第一信息，以及，通过组播或单播向该K个第二终端设备发送该第一信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第三信息包括该第一信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第三信息还包括该K个第二终端设备的标识信息，以实现针对性发送。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，通信模块可在该至少一个第二时机之前，从至少一个第三终端设备接收响应信息，该响应信息用于指示接收到 该第一信息。其中，该至少一个第三终端设备属于该M个第一终端设备，但不属于该K个第二终端设备。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，通信模块可从第二网络设备或者该M个第一终端设备，获得该M个第一终端设备的信息；其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息、该M个第一终端设备感兴趣的多播/组播业务的信息或者该M个第一终端设备正在接收的多播/组播业务的信息中的至少一个信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，通信模块可向该第二网络设备发送该M个第一终端设备的信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。
此外，图10所示通信装置还可用于执行图4或图9A所示的实施例中由终端设备所执行的除了收发操作之外的全部操作，例如S204、S310、S314和S404等步骤，和/或用于支持本文所描述的技术的其它过程，比如生成由通信模块1020发送的消息、信息和/或信令，和对由通信模块1020接收的消息、信息和/或信令进行处理。通信模块1020可以用于执行图4、图9A或图9C所示的实施例中由终端设备所执行的全部接收和发送操作，例如S203、S311、S312和S403等步骤和/或用于支持本文所描述的技术的其它过程。
另外，通信模块1020可以是一个功能模块，该功能模块既能完成发送操作也能完成接收操作，例如通信模块1020可以用于执行图4、图9A或图9C所示的实施例中由终端设备所执行的全部发送操作和接收操作，例如，在执行发送操作时，可以认为通信模块1020是发送模块，而在执行接收操作时，可以认为通信模块1020是接收模块；或者，通信模块1020也可以是两个功能模块，通信模块1020可以视为这两个功能模块的统称，这两个功能模块分别为发送模块和接收模块，发送模块用于完成发送操作，例如发送模块可以用于执行图4、图9A或图9C所示的实施例中由终端设备所执行的全部发送操作，接收模块用于完成接收操作，例如接收模块可以用于执行图4、图9A或图9C所示的实施例中由终端设备所执行的全部接收操作。
其中，在执行图4或图9A所示方法时，通信模块1020可在N个时机接收到一个或多个第一信息，该第一信息用于指示修改多播/组播业务的配置，N为大于等于1的整数。该处理模块1010响应于接收的第一个第一信息，建立与该网络设备的无线资源控制RRC连接。
在执行图9C所示方法时，通信模块1020可在N个时机接收多个第一信息，该第一信息为通知信息，例如寻呼消息。其中，N个时机属于第一周期，N为大于等于1的整数。或者，多个第一信息包括相同的版本信息。该处理模块1010可响应于一个第一信息执行第一操作。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识，版本信息中的至少一项。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者，该通信模块可接收用于指示该第一周期的信息。
此外，图10所示通信装置还可用于执行图9A所示的实施例中由第二网络设备所执行的除了收发操作之外的全部操作，例如维护基站的UE list等步骤，和/或用于支持本文所 描述的技术的其它过程，比如生成由通信模块1020发送的消息、信息和/或信令，和对由通信模块1020接收的消息、信息和/或信令进行处理。通信模块1020可以用于执行图9A所示的实施例中由第二网络设备所执行的全部接收和发送操作，例如S304和S305等步骤和/或用于支持本文所描述的技术的其它过程。
另外，通信模块1020可以是一个功能模块，该功能模块既能完成发送操作也能完成接收操作，例如通信模块1020可以用于执行图9A所示的实施例中由第二网络设备所执行的全部发送操作和接收操作，例如，在执行发送操作时，可以认为通信模块1020是发送模块，而在执行接收操作时，可以认为通信模块1020是接收模块；或者，通信模块1020也可以是两个功能模块，通信模块1020可以视为这两个功能模块的统称，这两个功能模块分别为发送模块和接收模块，发送模块用于完成发送操作，例如发送模块可以用于执行图4或、图9A所示的实施例中由第二网络设备所执行的全部发送操作，接收模块用于完成接收操作，例如接收模块可以用于执行图9A所示的实施例中由第二网络设备所执行的全部接收操作。
应理解，该通信装置也可只包括发送模块和接收模块，此时该通信装置类似于以上通信模块1020，该通信装置可外接于处理模块1010。
在执行图9A所示的实施例时，接收模块可接收来自于网络设备的M个第一终端设备的信息，M为大于等于1的整数。发送模块可向该网络设备发送该M个第一终端设备的信息。其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息和该M个第一终端设备感兴趣的多播/组播业务的信息和/或该M个第一终端设备正在接收的多播/组播业务的信息。
在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。
在一种可能的设计中，接收模块还可接收来自于第三网络设备的P个终端设备的信息，该P个终端设备的信息包括该P个终端设备的标识信息和该P个终端设备感兴趣的多播/组播业务的信息和/或该P个终端设备正在接收的多播/组播业务的信息；该M个第一终端设备不包括该P个终端设备。
本申请实施例中的装置为网络设备时，该装置可以如图11所示。装置1100包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)1110和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1120。RRU 1110可以称为收发模块，该收发模块可以包括发送模块和接收模块，或者，该收发模块可以是一个能够实现发送和接收功能的模块。该收发模块可以与图10中的通信模块1020对应，即可由收发模块执行由通信模块1020执行的网络设备的收发动作。可选地，该收发模块还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1111和射频单元1112。RRU 1110主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送指示信息。BBU 1120主要用于进行基带处理，对基站进行控制等。RRU 1110与BBU 1120可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
BBU 1120为基站的控制中心，也可以称为处理模块，可以与图10中的处理模块1010对应，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等，此外，可由处理模块执行由处理模块1010执行的动作。例如BBU(处理模块)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程，例如执行S201、S302、S304和S306等步骤。
在一个示例中，BBU 1120可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网络)，也可以分别支持不同接入制式的无线接入网(如LTE网络，5G网络或其他网络)。BBU 1120还包括存储器1121和处理器1122。存储器1121用以存储必要的指令和数据。处理器1122用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。存储器1121和处理器1122可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
在执行图4或图9A所示方法时，BBU 1120可确定第一信息，该第一信息用于指示修改多播/组播业务的配置。RRU 1110在N个时机重复发送该第一信息，N为大于等于1的整数。
在执行图9C所示方法时，BBU 1120可确定第一信息，该第一信息为通知信息，例如寻呼消息。RRU 1110在N个时机重复发送该第一信息，N为大于等于1的整数。其中，N个时机属于第一周期，或者多个第一信息包括相同的版本信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识和/或用于表示该第一信息是重复发送的信息(比如版本信息、或其他显示或指示地指示第一信息是重复发送的信息)。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者；RRU 1110还发送用于指示该第一周期的信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，RRU 1110可在该N个时机中的至少一个第一时机中向M个第一终端设备发送该第一信息，以及在该N个时机中的至少一个第二时机中向K个第二终端设备发送该第三信息。其中，该至少一个第二时机位于该至少一个第一时机之后，且该M个第一终端设备包括该K个第二终端设备，M>K(或M≥K)；该第三信息用于指示修改该多播/组播业务的配置。其中，该M个第一终端设备为包括对该第一多播/组播业务感兴趣的终端设备和/或正在接收该第一多播/组播业务的终端设备。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，RRU 1110可通过广播或组播向该M个第一终端设备发送该第一信息，以及，通过组播或单播向该K个第二终端设备发送该第一信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第三信息包括该第一信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第三信息还包括该K个第二终端设备的标识信息，以实现针对性发送。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，RRU 1110可在该至少一个第二时机之前，从至少一个第三终端设备接收响应信息，该响应信息用于指示接收到该第一信息。其中，该至少一个第三终端设备属于该M个第一终端设备，但不属于该K个第二终端设备。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，RRU 1110可从第二网络设备或者该M个第一终端设备，获得该M个第一终端设备的信息；其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息、该M个第一终端设备感兴趣的多播/组播业务的信息或者该M个第一终端设备正在接收的多播/组播业务的信息中的至少 一个信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，RRU 1110可向该第二网络设备发送该M个第一终端设备的信息。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。
本申请实施例还提供一种通信装置，该通信装置可以是终端设备也可以是电路。该通信装置可以用于执行上述方法实施例中由终端设备所执行的动作。
当该通信装置为终端设备时，图12示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图12中，终端设备以手机作为例子。如图12所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图12中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元(收发单元可以是一个功能单元，该功能单元能够实现发送功能和接收功能；或者，收发单元也可以包括两个功能单元，分别为能够实现接收功能的接收单元和能够实现发送功能的发送单元)，将具有处理功能的处理器视为终端设备的处理单元。如图12所示，终端设备包括通信单元1210和处理单元1220。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将通信单元1210中用于实现接收功能的器件视为接收单元，将通信单元1210中用于实现发送功能的器件视为发送单元，即通信单元1210包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，通信单元1210用于执行上述方法实施例中终端设备的发送操作和接收操作，处理单元1220用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
其中，在执行图4或图9A所示方法时，通信单元1210可在N个时机接收到一个或多个第一信息，该第一信息用于指示修改多播/组播业务的配置，N为大于等于1的整数。该处理单元1220响应于接收的第一个第一信息，建立与该网络设备的无线资源控制RRC连接。比如，由处理单元1220生成并触发通信单元1210向网络设备发送用于建立RRC连接的请求消息。
在执行图9C所示方法时，通信单元1210可在N个时机接收多个第一信息，该第一信息为通知信息，例如寻呼消息。其中，N个时机属于第一周期，N为大于等于1的整数。或者，多个第一信息包括相同的版本信息。处理单元1220用于响应于一个第一信息执行第一操作。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该第一信息中包括标识信息，其中该标识信息包括业务标识，版本信息中的至少一项。
在执行图4、图9A或图9C所示方法时，在一种可能的设计中，该N个时机属于第一周期。该第一周期是预配置的，或者，该通信模块可接收用于指示该第一周期的信息。
另一种可能的实现方式中，若通过硬件组件实现第二网络设备，其结构可如图13所示。为便于理解，图13中仅示出了执行本申请所示方法所必须的结构，本申请并不限制通信装置可具备更多组件。该通信装置1300可包括通信接口1301、存储器1302以及处理器1303。该通信接口1301可以用于通信装置进行通信，如用于通过有线和/或无线发送或接收信号，从而进行信息、数据和消息等的发送和/或接收。该存储器1302与处理器1303耦合，其用于保存通信装置1300实现各功能所必要的程序和数据。该处理器1303被配置为支持通信装置1300执行上述方法中由会话管理网元执行的处理功能，如确定生成由通信接口1301发送的信息、消息，和/或，对通信接口1301接收的信号进行解调解码等等。以上存储器1302以及处理器1303可集成于一体也可相互独立。
示例性的，该通信接口1301可包括有线通信接口，可用于支持通信装置1300通过有线方式接收和发送信令和/或数据。通信接口1301也可被称为收发单元或通信单元，可被视为接收单元和发送单元的组合。或者，该通信接口1301可包括无线收发器(如包括调制解调器和/或天线)，可用于支持通信装置1300通过无线方式接收和发送信令和/或数据。通信接口1301也可被称为无线收发器或无线通信单元。
该处理器1303可通过处理芯片或处理电路实现。
在执行图9A所示的由第二网络设备执行的动作时，在执行图9A所示的实施例时，通信接口可接收来自于网络设备的M个第一终端设备的信息，M为大于等于1的整数，以及可向该网络设备发送该M个第一终端设备的信息。其中，该M个第一终端设备的信息包括该M个第一终端设备的标识信息和该M个第一终端设备感兴趣的多播/组播业务的信息和/或该M个第一终端设备正在接收的多播/组播业务的信息。
在一种可能的设计中，该M个第一终端设备属于空闲态或者非激活态。
在一种可能的设计中，通信接口还可接收来自于第三网络设备的P个终端设备的信息，该P个终端设备的信息包括该P个终端设备的标识信息和该P个终端设备感兴趣的多播/组播业务的信息和/或该P个终端设备正在接收的多播/组播业务的信息；该M个第一终端设备不包括该P个终端设备。
本申请实施例提供一种通信***。该通信***可以包括上述的图1或图2所示的实施例所涉及的终端设备以及网络设备。可选的，该通信***还可包括本申请涉及的第二网络设备。可选的，该通信***可实现图4、图9A或图9C的通信方法。
本申请实施例还提供一种计算机可读存储介质，计算机可读存储介质用于存储计算机程序，该计算机程序被计算机执行时，计算机可以实现上述方法实施例提供的图4、图9A或图9C所示的实施例中与终端设备、网络设备和/或第二网络设备相关的流程。
本申请实施例还提供一种计算机程序产品，计算机程序产品用于存储计算机程序，该 计算机程序被计算机执行时，计算机可以实现上述方法实施例提供的图4、图9A或图9C所示的实施例中与终端设备、网络设备和/或第二网络设备相关的流程。
本申请实施例还提供一种芯片或芯片***，该芯片可包括处理器，该处理器可用于调用存储器中的程序或指令，执行上述方法实施例提供的图4、图9A或图9C所示的实施例中与终端设备、网络设备和/或第二网络设备相关的流程。该芯片***可包括该芯片，还可存储器或收发器等其他组件。
应理解，本申请实施例中提及的处理器可以是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或非易失性存储器，或可包括易失性和非易失性存储器两者。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)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如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)集成在处理器中。
应注意，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。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的通信方法和通信装置，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仅是示意性的，例如，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。另一点，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。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
以上功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例方法的全部或部分步骤。而前述的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。以此为例但不限于：计算机可读介质可以包括随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、电可擦可编程只读存储器(electrically erasable programmable read only memory，EEPROM)、紧凑型光盘只读存储器(compact disc read-only memory，CD-ROM)、通用串行总线闪存盘(universal serial bus flash disk)、移动硬盘、或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。
以上仅为本申请的具体实施方式，但本申请实施例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实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应以权利要求的保护范围为准。

Claims (56)

  1. 一种通信方法，其特征在于，包括：
    网络设备确定第一信息；
    所述网络设备在N个时机重复发送多个所述第一信息，N为大于等于1的整数，所述N个时机属于第一周期，或者，所述多个第一信息包括相同的版本信息，或者，所述多个第一信息的下行控制信息包括相同的版本信息，所述第一信息为寻呼消息。
  2. 如权利要求1所述的方法，其特征在于，所述第一信息中包括业务标识。
  3. 如权利要求1或2所述的方法，其特征在于，所述N个时机属于第一周期；
    所述第一周期是预配置的；或者，
    所述方法还包括：
    所述网络设备发送用于指示所述第一周期的信息。
  4. 一种通信方法，其特征在于，包括：
    网络设备确定第一信息，所述第一信息用于指示修改多播/组播业务的配置；
    所述网络设备在N个时机重复发送所述第一信息，N为大于等于1的整数。
  5. 如权利要求4所述的方法，其特征在于，所述第一信息中包括标识信息，其中所述标识信息包括业务标识，版本信息中的至少一项。
  6. 如权利要求4或5所述的方法，其特征在于，所述N个时机属于第一周期，
    所述第一周期是预配置的，或者；
    所述方法还包括：
    所述网络设备发送用于指示所述第一周期的信息。
  7. 如权利要求4-6中任一所述的方法，其特征在于，所述网络设备在N个时机重复发送所述第一信息，包括：
    所述网络设备在所述N个时机中的至少一个第一时机中向M个第一终端设备发送所述第一信息；
    所述网络设备在所述N个时机中的至少一个第二时机中向K个第二终端设备发送所述第三信息，所述至少一个第二时机位于所述至少一个第一时机之后，且所述M个第一终端设备包括所述K个第二终端设备，M>K；所述第三信息用于指示修改所述多播/组播业务的配置；
    其中，所述M个第一终端设备为包括对所述第一多播/组播业务感兴趣的终端设备和/或正在接收所述第一多播/组播业务的终端设备。
  8. 如权利要求7所述的方法，其特征在于，所述网络设备在所述N个时机中的至少一个第一时机中向M个第一终端设备发送所述第一信息，包括：
    所述网络设备通过广播或组播向所述M个第一终端设备发送所述第一信息；
    所述网络设备在所述N个时机中的至少一个第二时机中向K个第二终端设备发送所述第三信息，包括：
    所述网络设备通过组播或单播向所述K个第二终端设备发送所述第三信息。
  9. 如权利要求7或8所述的方法，其特征在于，所述第三信息包括所述第一信息。
  10. 如权利要求9所述的方法，其特征在于，所述第三信息还包括所述K个第二终端设备的标识信息。
  11. 如权利要求7-10中任一所述的方法，其特征在于，所述方法还包括：
    所述网络设备在所述至少一个第二时机之前，从至少一个第三终端设备接收响应信息，所述响应信息用于指示接收到所述第一信息，其中，
    所述至少一个第三终端设备属于所述M个第一终端设备，但不属于所述K个第二终端设备。
  12. 如权利要求7-11中任一所述的方法，其特征在于，所述方法还包括：
    所述网络设备从第二网络设备或者所述M个第一终端设备，获得所述M个第一终端设备的信息；
    其中，所述M个第一终端设备的信息包括所述M个第一终端设备的标识信息、所述M个第一终端设备感兴趣的多播/组播业务的信息或者所述M个第一终端设备正在接收的多播/组播业务的信息中的至少一个信息。
  13. 如权利要求12所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述第二网络设备发送所述M个第一终端设备的信息。
  14. 如权利要求7-13中任一所述的方法，其特征在于，所述M个第一终端设备属于空闲态或者非激活态。
  15. 一种通信方法，其特征在于，包括：
    终端设备在N个时机接收到多个第一信息，N为大于等于1的整数，所述N个时机属于第一周期，或者，所述多个第一信息包括相同的版本信息，或者，所述多个第一信息的下行控制信息包括相同的版本信息，所述多个第一信息为寻呼消息；
    所述终端设备响应于一个所述第一信息，执行第一操作。
  16. 如权利要求15所述的方法，其特征在于，所述多个第一信息中包括业务标识。
  17. 如权利要求15或16所述的方法，其特征在于，所述N个时机属于第一周期，
    所述第一周期是预配置的，或者；
    所述方法还包括：
    所述终端设备接收用于指示所述第一周期的信息。
  18. 一种通信方法，其特征在于，包括：
    终端设备在N个时机检测一个或多个第一信息，所述第一信息用于指示修改多播/组播业务的配置，N为大于等于1的整数；
    所述终端设备响应于在所述N个时机中首次接收的第一信息，建立与所述网络设备的无线资源控制RRC连接。
  19. 如权利要求18所述的方法，其特征在于，所述第一信息中包括标识信息，其中所述标识信息包括业务标识，版本信息中的至少一项。
  20. 如权利要求18或19所述的方法，其特征在于，所述N个时机属于第一周期，
    所述第一周期是预配置的，或者；
    所述方法还包括：
    所述终端设备接收用于指示所述第一周期的信息。
  21. 一种通信方法，其特征在于，包括：
    第二网络设备接收来自于网络设备的M个第一终端设备的信息，M为大于等于1的整数；
    所述第二网络设备向所述网络设备发送所述M个第一终端设备的信息；
    其中，所述M个第一终端设备的信息包括所述M个第一终端设备的标识信息和所述M个第一终端设备感兴趣的多播/组播业务的信息和/或所述M个第一终端设备正在接收的多播/组播业务的信息。
  22. 如权利要求21所述的方法，其特征在于，所述M个第一终端设备属于空闲态或者非激活态。
  23. 如权利要求21或22所述的方法，其特征在于，所述方法还包括：
    所述第二网络设备从第三网络设备接收的P个终端设备的信息，所述P个终端设备的信息包括所述P个终端设备的标识信息和所述P个终端设备感兴趣的多播/组播业务的信息和/或所述P个终端设备正在接收的多播/组播业务的信息；所述M个第一终端设备不包括所述P个终端设备。
  24. 一种通信装置，其特征在于，包括：
    处理模块，用于确定第一信息；
    通信模块，用于在N个时机重复发送多个所述第一信息，N为大于等于1的整数，所述N个时机属于第一周期，或者，所述多个第一信息包括相同的版本信息，或者，所述多个第一信息的下行控制信息包括相同的版本信息，所述第一信息为寻呼消息。
  25. 如权利要求24所述的通信装置，其特征在于，所述第一信息中包括业务标识。
  26. 如权利要求24或25所述的通信装置，其特征在于，所述N个时机属于第一周期；
    所述第一周期是预配置的；或者，
    所述通信模块还用于：
    发送用于指示所述第一周期的信息。
  27. 一种通信装置，其特征在于，包括处理模块和通信模块：
    所述处理模块，用于确定第一信息，所述第一信息用于指示修改多播/组播业务的配置；
    所述通信模块，用于在N个时机重复发送所述第一信息，N为大于等于1的整数。
  28. 如权利要求27所述的通信装置，其特征在于，所述第一信息中包括标识信息，其中所述标识信息包括业务标识，版本信息中的至少一项。
  29. 如权利要求27或28所述的通信装置，其特征在于，所述N个时机属于第一周期，
    所述第一周期是预配置的，或者；
    所述通信模块还用于：
    发送用于指示所述第一周期的信息。
  30. 如权利要求27-29中任一所述的通信装置，其特征在于，所述通信模块具体用于：
    在所述N个时机中的至少一个第一时机中向M个第一终端设备发送所述第一信息；
    在所述N个时机中的至少一个第二时机中向K个第二终端设备发送所述第三信息，所述至少一个第二时机位于所述至少一个第一时机之后，且所述M个第一终端设备包括所述K个第二终端设备，M>K；所述第三信息用于指示修改所述多播/组播业务的配置；
    其中，所述M个第一终端设备为包括对所述第一多播/组播业务感兴趣的终端设备和/或正在接收所述第一多播/组播业务的终端设备。
  31. 如权利要求30所述的通信装置，其特征在于，所述通信模块具体用于：
    通过广播或组播向所述M个第一终端设备发送所述第一信息；
    通过组播或单播向所述K个第二终端设备发送所述第一信息。
  32. 如权利要求30或31所述的通信装置，其特征在于，所述第三信息包括所述第一 信息。
  33. 如权利要求32所述的通信装置，其特征在于，所述第三信息还包括所述K个第二终端设备的标识信息。
  34. 如权利要求30-33中任一所述的通信装置，其特征在于，所述通信模块还用于：
    在所述至少一个第二时机之前，从至少一个第三终端设备接收响应信息，所述响应信息用于指示接收到所述第一信息，其中，所述至少一个第三终端设备属于所述M个第一终端设备，但不属于所述K个第二终端设备。
  35. 如权利要求30-34中任一所述的通信装置，其特征在于，所述通信模块还用于：
    从第二网络设备或者所述M个第一终端设备，获得所述M个第一终端设备的信息；其中，所述M个第一终端设备的信息包括所述M个第一终端设备的标识信息、所述M个第一终端设备感兴趣的多播/组播业务的信息或者所述M个第一终端设备正在接收的多播/组播业务的信息中的至少一个信息。
  36. 如权利要求35所述的通信装置，其特征在于，所述通信模块还用于：
    向所述第二网络设备发送所述M个第一终端设备的信息。
  37. 如权利要求30-36中任一所述的通信装置，其特征在于，所述M个第一终端设备属于空闲态或者非激活态。
  38. 一种通信装置，其特征在于，包括：
    通信模块，用于在N个时机接收到多个第一信息，N为大于等于1的整数，所述N个时机属于第一周期，或者，所述多个第一信息包括相同的版本信息，或者，所述多个第一信息的下行控制信息包括相同的版本信息，所述多个第一信息为寻呼消息；
    处理模块，用于响应于一个所述第一信息，执行第一操作。
  39. 如权利要求38所述的通信装置，其特征在于，所述多个第一信息中包括业务标识。
  40. 如权利要求38或39所述的方法，其特征在于，所述N个时机属于第一周期，
    所述第一周期是预配置的，或者；
    所述通信模块还用于：
    接收用于指示所述第一周期的信息。
  41. 一种通信装置，其特征在于，包括处理模块和通信模块：
    所述通信模块，用于在N个时机接收到一个或多个第一信息，所述第一信息用于指示修改多播/组播业务的配置，N为大于等于1的整数；
    所述处理模块，用于响应于接收的第一个第一信息，建立与所述网络设备的无线资源控制RRC连接。
  42. 如权利要求41所述的通信装置，其特征在于，所述第一信息中包括标识信息，其中所述标识信息包括业务标识，版本信息中的至少一项。
  43. 如权利要求41或42所述的通信装置，其特征在于，所述N个时机属于第一周期，
    所述第一周期是预配置的，或者；
    所述通信模块还用于：
    接收用于指示所述第一周期的信息。
  44. 一种通信装置，其特征在于，包括接收模块和发送模块：
    所述接收模块，用于接收来自于网络设备的M个第一终端设备的信息，M为大于等 于1的整数；
    所述发送模块，用于向所述网络设备发送所述M个第一终端设备的信息；
    其中，所述M个第一终端设备的信息包括所述M个第一终端设备的标识信息和所述M个第一终端设备感兴趣的多播/组播业务的信息和/或所述M个第一终端设备正在接收的多播/组播业务的信息。
  45. 如权利要求44所述的通信装置，其特征在于，所述M个第一终端设备属于空闲态或者非激活态。
  46. 如权利要求44或45所述的通信装置，其特征在于，所述接收模块还用于：
    从第三网络设备接收的P个终端设备的信息，所述P个终端设备的信息包括所述P个终端设备的标识信息和所述P个终端设备感兴趣的多播/组播业务的信息和/或所述P个终端设备正在接收的多播/组播业务的信息；所述M个第一终端设备不包括所述P个终端设备。
  47. 一种通信装置，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得所述通信装置执行如权利要求1-3或7-14中任一项所述的方法。
  48. 一种通信装置，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得所述通信装置执行如权利要求15-17中任一项所述的方法。
  49. 一种通信装置，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得所述通信装置执行如权利要求4-14中任一项所述的方法。
  50. 一种通信装置，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得所述通信装置执行如权利要求18-20中任一项所述的方法。
  51. 一种通信装置，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得所述通信装置执行如权利要求21-23中任一项所述的方法。
  52. 一种通信***，其特征在于，包括如权利要求24-26、30-37或47中任一所述的通信装置和如权利要求38-40或48中任一所述的通信装置，或包括如权利要求27-37、49中任一所述的通信装置和如权利要求41-43或50中任一所述的通信装置。
  53. 如权利要求52所述的通信***，其特征在于，所示通信***包括如权利要求27-37、49中任一所述的通信装置和如权利要求41-43或50中任一所述的通信装置；
    还包括如权利要求32-34或37中任一所述的通信装置。
  54. 一种计算机可读存储介质，其特征在于，所述计算机存储介质中存储有指令，当所述指令在计算机上被调用执行时，使得所述计算机执行如权利要求1-23中任一项所述的 方法。
  55. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1-23中任一项所述的方法。
  56. 一种电路，其特征在于，所述电路与存储器耦合，所述电路用于读取并执行所述存储器中存储的程序以执行如权利要求1-23中任一项所述的方法。
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