WO2023202386A1 - 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
WO2023202386A1
WO2023202386A1 PCT/CN2023/086640 CN2023086640W WO2023202386A1 WO 2023202386 A1 WO2023202386 A1 WO 2023202386A1 CN 2023086640 W CN2023086640 W CN 2023086640W WO 2023202386 A1 WO2023202386 A1 WO 2023202386A1
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WO
WIPO (PCT)
Prior art keywords
configuration information
multicast
service
dci
rnti
Prior art date
Application number
PCT/CN2023/086640
Other languages
English (en)
French (fr)
Inventor
张海森
李秉肇
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023202386A1 publication Critical patent/WO2023202386A1/zh

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular, to a communication method and device.
  • Multicast and broadcast service (MBS) service is a service for multiple user equipment (user equipment, UE).
  • MBS services can include live broadcast services, public security services, batch software update services, etc.
  • the data server can send MBS data to the core network device
  • the core network device can send the MBS data to the access network device
  • the access network device can send the MBS data to one or more recipients of the MBS data.
  • UE User Equipment
  • MBS data can be transmitted between the data server and the core network equipment through the public transmission channel MBS service.
  • MBS data can be transmitted between core network equipment and access network equipment through a common transmission channel MBS session, and each MBS session can include at least one MBS quality of service (QoS) flow.
  • QoS MBS quality of service
  • MBS radio bearer MRB
  • MRB has two transmission methods, one transmission method is point to multi-point (PTM) transmission, and the other transmission method is point to point (point to point, PTP) transmission.
  • PTM transmission transmits MBS data to multiple UEs for the access network equipment
  • PTP transmission transmits MBS data to one UE for the access network equipment.
  • the MBS services designed by new radio can be divided into two categories: multicast services and broadcast services.
  • Multicast services can only be provided to UEs in radio resource control (RRC) connected state, and broadcast services support UEs in any RRC state.
  • RRC radio resource control
  • the multicast technology is similar to the broadcast technology. As long as the UE has relevant PTM reception configuration, the UE may also receive the group in the RRC non-connected state. broadcast business. However, how to solve the problem of PTM reception configuration corresponding to the UE receiving multicast services in the RRC non-connected state remains to be further studied.
  • the embodiments of the present application disclose a communication method and device for saving signaling overhead and transmission resources.
  • this application discloses a communication method, which can be applied to terminal equipment, to modules (for example, chips) in the terminal equipment, and to logic that can realize all or part of the functions of the terminal equipment. module or software.
  • the following description takes the execution subject being a terminal device as an example.
  • the communication method may include: the terminal device receives configuration information through a multicast broadcast service control channel, and the configuration information is used for multicast service or broadcast service; when the configuration information is used for multicast service, in the RRC according to the configuration information Receive multicast services in a non-connected state.
  • the RRC non-connected state can be the RRC idle state or the RRC deactivated state.
  • the terminal device can receive user information from the access network device through the multicast broadcast service control channel.
  • Configuration information for the multicast service that is, the configuration information for the multicast service can be received in the RRC non-connected state, and then the multicast service can be received in the RRC non-connected state according to the configuration information for the multicast service. It can be seen that the terminal device does not need to enter the RRC connection state during the process of receiving the entire multicast service. Therefore, the access network device does not need to send the same multicast message to each terminal device receiving the multicast service through dedicated signaling.
  • the configuration information of the service only needs to be sent to multiple terminal devices at one time through the multicast broadcast service control channel, which can reduce the amount of information transmitted, thereby saving signaling overhead and transmission resources.
  • the terminal device since the terminal device does not need to enter the RRC connection state in the process of receiving the entire multicast service, the number of terminal devices using access resources can be reduced, thereby saving access resources and avoiding network damage caused by the terminal device entering the RRC connection state. Obstruction or aggravation of obstruction.
  • the terminal device since the terminal device does not need to enter the RRC connected state in the process of receiving the entire multicast service, and does not need to switch between the RRC connected state and the RRC non-connected state, the transmission time of the multicast service can be reduced, thereby improving the Transmission efficiency of multicast services.
  • the bandwidth may be switched to the initial bandwidth part (bandwitch, BWP).
  • BWP bandwidth part
  • the terminal device may not be able to receive the multicast service, causing packet loss, because the terminal device is receiving the entire multicast service. There is no need to enter the RRC connection state during the service process, and there is no need to perform bandwidth switching, so packet loss caused by bandwidth switching can be avoided.
  • the communication method may further include: in the case where the configuration information includes the first indication information of the multicast service, the terminal device may determine that the configuration information is used for the multicast service; and/or in the When the configuration information is carried on the first logical channel (logic channel, LCH), the terminal device can determine that the configuration information is used for the multicast service, and the first LCH corresponds to the multicast service; and/or when using the first wireless network temporary identifier (radio network temporary identifier, RNTI) successfully descrambles the first data packet or downlink control information (DCI), the terminal device can determine that the configuration information is used for multicast services, and the first data packet can include the Configuration information, the DCI is used to schedule the configuration information, and the first RNTI corresponds to the multicast service.
  • LCH logic channel
  • RNTI radio network temporary identifier
  • DCI downlink control information
  • the terminal device can accurately distinguish the configuration information for the multicast service in the RRC non-connected state, the accuracy of receiving the multicast service in the RRC non-connected state can be improved.
  • the configuration information for the multicast service includes the first indication information of the multicast service
  • the configuration information for the multicast service has less changes than the existing configuration information for the broadcast service, thereby improving the performance of the multicast service. Compatibility with existing protocols or technologies.
  • the configuration information for the multicast service is carried on the first LCH, since there is no need for special information in the configuration information to indicate that the configuration information is used for the multicast service, the data amount of the configuration information can be reduced, thereby saving money.
  • the LCH is located at the media access control (MAC) layer.
  • the terminal device can identify it earlier
  • the configuration information used for multicast services can reduce unnecessary processing, thereby reducing the power consumption of terminal equipment.
  • the terminal device can determine that the configuration information is used for the multicast service, since no special information is required in the configuration information to indicate the configuration.
  • the information is used for multicast services, so the data amount of configuration information can be reduced, thereby saving transmission resources; further, using RNTI to descramble information is performed at the physical layer, so it is carried with the configuration information used for multicast services.
  • the terminal device can identify the configuration information for the multicast service earlier, which can reduce unnecessary processing, thereby reducing the power consumption of the terminal device.
  • the communication method may further include: when the configuration information is used for a broadcast service, the terminal device may receive the broadcast service according to the configuration information.
  • a multicast broadcast service control channel can transmit configuration information for multicast services and configuration information for broadcast services, which can improve the utilization of the multicast broadcast service control channel.
  • the terminal device only needs to monitor one multicast broadcast service control channel, which can reduce the number of multicast broadcast service control channels that the terminal device monitors, thereby reducing the power consumption of the terminal device.
  • the communication method may further include: in the case where the configuration information includes the second indication information of the broadcast service, the terminal device may determine that the configuration information is used for the broadcast service; and/or in the case where the configuration information When carried on the second LCH, the terminal device can determine that the configuration information is used for the broadcast service, the second LCH corresponds to the broadcast service, the first LCH is different from the second LCH; and/or the second RNTI is used to successfully descramble the second LCH.
  • the terminal device can determine that the configuration information is used for the broadcast service, the second data packet can include the configuration information, the DCI is used to schedule the configuration information, the second RNTI corresponds to the broadcast service, and the first RNTI is the same as the broadcast service.
  • the second RNTI is different.
  • the terminal device can accurately identify the configuration information used for the multicast service or the broadcast service, and can then process it accordingly, thereby improving the accuracy of service reception.
  • the communication method may further include: the terminal device receives DCI, the DCI may include third indication information, and the third indication information indicates whether the configuration information for the multicast service has changed.
  • the terminal device can receive indication information indicating whether the configuration information used for the multicast service has changed. If it is determined according to the indication information that the configuration information used for the multicast service has not changed, there is no need to monitor.
  • the multicast broadcast service control channel only needs to be monitored when the configuration information used for the multicast service changes according to the indication information, which can reduce unnecessary monitoring and thus reduce the cost of the terminal equipment. power consumption.
  • the DCI is scrambled using the first RNTI.
  • the terminal device can successfully descramble using the RNTI corresponding to the multicast service to obtain the DCI indicating whether the configuration information for the multicast service has changed, and then can determine whether the multicast service has changed based on the DCI, which can accurately The service type of DCI indication can be determined accurately, thereby improving the accuracy of DCI indication.
  • the DCI may also include fourth indication information, and the fourth indication information indicates whether the configuration information for the broadcast service changes.
  • a function of indicating whether the configuration information for the multicast service has changed can be added, which can improve the utilization of the DCI. and compatibility.
  • the configuration information may include temporary multicast group identifier (TMGI), group radio network temporary identifier (G-RNTI), discontinuous reception (discontinuous reception) , DRX) configuration, MRB configuration or physical downlink shared channel (physical downlink share channel, PDSCH) configuration at least one.
  • TMGI temporary multicast group identifier
  • G-RNTI group radio network temporary identifier
  • DRX discontinuous reception
  • MRB configuration
  • PDSCH physical downlink shared channel
  • the communication method may further include: the terminal device receives a system message, and the system message may include fifth indication information, and the fifth indication information is used to instruct to provide the multicast service in the RRC non-connection state.
  • the terminal device when the access network device provides the RRC non-connection state multicast service, the terminal device can receive the instruction information for providing the non-connection state multicast service, so that it can determine whether to monitor the multicast service based on the instruction information. Broadcasting the broadcast service control channel can reduce unnecessary monitoring of terminal equipment, thereby reducing the power consumption of terminal equipment.
  • this application discloses a communication method, which can be applied to access network equipment, can also be applied to modules (for example, chips) in access network equipment, and can also be applied to realize all or part of the access network equipment.
  • the following description takes the execution subject being the access network device as an example.
  • the communication method may include: the access network device sends configuration information through a multicast broadcast service control channel, and the configuration information is used for multicast service or broadcast service; when the configuration information is used for multicast service, according to the configuration information Send multicast services to the terminal device, which is in the RRC non-connected state.
  • the RRC non-connected state can be the RRC idle state or the RRC deactivated state.
  • the access network device can send the configuration information for the multicast service to the terminal device through the multicast broadcast service control channel, that is, the configuration information for the multicast service can be transmitted in the RRC non-connected state, so that the terminal The device can Receive multicast services in RRC non-connected state according to the configuration information for multicast services. It can be seen that the terminal device does not need to enter the RRC connection state during the entire multicast service transmission process. Therefore, the access network device does not need to send the same multicast message to each terminal device receiving the multicast service through dedicated signaling.
  • the configuration information of the service only needs to be sent to multiple terminal devices at one time through the multicast broadcast service control channel, which can reduce the amount of information transmitted, thereby saving signaling overhead and transmission resources.
  • the terminal equipment since the terminal equipment does not need to enter the RRC connection state during the entire multicast service transmission process, the number of terminal equipment using access resources can be reduced, thereby saving access resources and avoiding network damage due to the terminal equipment entering the RRC connection state. Obstruction or aggravation of obstruction. Furthermore, since the terminal device does not need to enter the RRC connected state during the entire multicast service transmission process, and does not need to switch between the RRC connected state and the RRC non-connected state, the transmission time of the multicast service can be reduced, thereby improving the Transmission efficiency of multicast services. Furthermore, when the terminal device enters the connected state, the bandwidth may be switched to the initial bandwidth part (bandwitch, BWP).
  • BWP bandwidth part
  • the terminal device may not be able to receive the multicast service, causing packet loss, because the terminal device is receiving the entire multicast service. There is no need to enter the RRC connection state during the service process, and there is no need to perform bandwidth switching, so packet loss caused by bandwidth switching can be avoided.
  • the configuration information may include the first indication information of the multicast service; and/or the configuration information may be carried on the first LCH; and/or the first data packet or DCI may be obtained by scrambling the first RNTI.
  • the first LCH corresponds to the multicast service
  • the first RNTI corresponds to the multicast service
  • the first data packet includes the configuration information
  • the DCI is used to schedule the configuration information.
  • the terminal device after the access network device sends the configuration information for the multicast service to the terminal device through the multicast broadcast service control channel, the terminal device can accurately distinguish the configuration information for the multicast service in the RRC non-connected state. Configuration information, therefore, can improve the accuracy of receiving multicast services in RRC non-connected state.
  • the configuration information includes the first indication information of the multicast service, and the configuration information used for the multicast service has fewer changes than the existing configuration information used for the broadcast service, so that Can improve compatibility with existing protocols or technologies.
  • the configuration information is carried on the first LCH.
  • the configuration information does not require special information to indicate that the configuration information is used for multicast services, the data amount of the configuration information can be reduced, thus Transmission resources can be saved; further, the LCH is located at the MAC layer.
  • the terminal device can identify the configuration information for the multicast service earlier. , which can reduce unnecessary processing, thereby reducing the power consumption of the terminal device.
  • the first RNTI is used to scramble the first data packet including the configuration information or the DCI that schedules the configuration information, because no special information is needed in the configuration information to indicate that the configuration information is used for multicast.
  • the terminal device can identify the configuration information used for the multicast service earlier, which can reduce unnecessary processing, thereby reducing the power consumption of the terminal device.
  • the communication method may further include: when the configuration information is used for a broadcast service, the access network device may send the broadcast service to the terminal device according to the configuration information.
  • a multicast broadcast service control channel can transmit configuration information for multicast services and configuration information for broadcast services, which can improve the utilization of the multicast broadcast service control channel.
  • the terminal device only needs to monitor one multicast broadcast service control channel, which can reduce the number of multicast broadcast service control channels that the terminal device monitors, thereby reducing the power consumption of the terminal device.
  • the configuration information may include the second indication information of the broadcast service; and/or the configuration information may be carried on the second LCH; and/or the second data packet or DCI may be obtained by scrambling the second RNTI,
  • the second LCH corresponds to the broadcast service
  • the second RNTI corresponds to the broadcast service
  • the first LCH is different from the second LCH
  • the first RNTI is different from the second RNTI
  • the second data packet includes the configuration information
  • the DCI is used to schedule the configuration information.
  • the configuration information has different functions, and at least one of the service information, LCH, and RNTI corresponding to the configuration information is different, so that the terminal device can use at least one of the service information, LCH, or RNTI corresponding to the configuration information,
  • the configuration information used for multicast service or broadcast service can be accurately identified and processed accordingly, thereby improving the accuracy of service reception.
  • the communication method may further include: the access network device sending DCI, where the DCI may include third indication information, and the third indication information indicates whether the configuration information for the multicast service has changed.
  • the access network device can indicate whether the configuration information of the multicast service has changed through DCI, so that the terminal device does not need to monitor the multicast service when it determines according to the instruction that the configuration information for the multicast service has not changed.
  • the multicast broadcast service control channel only needs to be monitored when the configuration information used for the multicast service changes according to the instructions, which can reduce unnecessary monitoring and thus reduce the power consumption of the terminal equipment. .
  • the DCI is scrambled using the first RNTI.
  • the DCI when the DCI indicates whether the configuration information of the multicast service has changed, the DCI is scrambled using the RNTI corresponding to the multicast service, so that the terminal device can successfully descramble the DCI using the RNTI corresponding to the multicast service. , and then it can be determined whether the multicast service has changed based on the DCI, and the service type indicated by the DCI can be accurately determined, thereby improving the accuracy of the DCI indication.
  • the DCI may also include fourth indication information, and the fourth indication information indicates whether the configuration information for the broadcast service changes.
  • a function of indicating whether the configuration information for the multicast service has changed can be added, which can improve the utilization of the DCI. and compatibility.
  • the configuration information may include at least one of TMGI, G-RNTI, DRX configuration, MRB configuration or PDSCH configuration.
  • the communication method may further include: the access network device sending a system message.
  • the system message may include fifth indication information, and the fifth indication information is used to instruct to provide a non-connection state multicast service.
  • the access network device when the access network device provides a non-connected multicast service, it can send instruction information for providing a non-connected multicast service to the terminal device, so that the terminal device can determine whether to monitor the multicast broadcast based on the instruction information.
  • the service control channel can reduce unnecessary monitoring of terminal equipment, thereby reducing the power consumption of terminal equipment.
  • the present application discloses a communication device, which can be applied to terminal equipment, can also be applied to modules (for example, chips) in terminal equipment, and can also be applied to logic that can realize all or part of the functions of terminal equipment.
  • module or software The communication device may include: a transceiver unit, configured to receive configuration information through a multicast broadcast service control channel, where the configuration information is used for multicast services or broadcast services; and a processing unit, configured to control the transceiver unit to use the configuration information for group broadcast services.
  • multicast services multicast services are received in the RRC non-connected state according to this configuration information.
  • the processing unit is further configured to: when the configuration information includes the first indication information of the multicast service, determine that the configuration information is used for the multicast service; and/or when the configuration information carries In the case of the first LCH, determine that the configuration information is used for multicast services, and the first LCH corresponds to the multicast service; and/or in the case of using the first successful descrambling of the first data packet or DCI, determine the configuration information
  • the first data packet may include the configuration information
  • the DCI is used to schedule the configuration information
  • the first RNTI corresponds to the multicast service.
  • the processing unit is also configured to control the transceiver unit to receive broadcast services according to the configuration information when the configuration information is used for broadcast services.
  • the processing unit is further configured to: when the configuration information includes the second indication information of the broadcast service, determine that the configuration information is used for the broadcast service; and/or when the configuration information is carried on The love of the second LCH In this case, determine that the configuration information is used for the broadcast service, the second LCH corresponds to the broadcast service, and the first LCH is different from the second LCH; and/or in the case of successfully descrambling the second data packet or DCI using the second RNTI, determine The configuration information is used for broadcast services, the second data packet includes the configuration information, the DCI is used for scheduling the configuration information, the second RNTI corresponds to the broadcast service, and the first RNTI is different from the second RNTI.
  • the transceiver unit is also configured to receive DCI.
  • the DCI may include third indication information, and the third indication information indicates whether the configuration information for the multicast service has changed.
  • the DCI is scrambled using the first RNTI.
  • the DCI may also include fourth indication information, and the fourth indication information indicates whether the configuration information for the broadcast service changes.
  • the configuration information includes at least one of TMGI, G-RNTI, DRX configuration, MRB configuration or PDSCH configuration.
  • the transceiver unit is also configured to receive a system message.
  • the system message may include fifth indication information, and the fifth indication information is used to instruct to provide a non-connection state multicast service.
  • the present application discloses a communication device, which can be applied to access network equipment, can also be applied to modules (for example, chips or processors) in access network equipment, and can also be applied to realize all Or the logical modules or software of some access network equipment functions.
  • the communication device may include: a transceiver unit, configured to send configuration information through a multicast broadcast service control channel, where the configuration information is used for multicast services or broadcast services; and a processing unit, configured to control the transceiver unit when the configuration information is used for group
  • the multicast service is sent to the terminal device according to the configuration information, and the terminal device is in the RRC non-connected state.
  • the configuration information includes the first indication information of the multicast service; and/or the configuration information is carried on the first LCH; and/or the first data packet or DCI is obtained by scrambling the first RNTI,
  • the first LCH corresponds to the multicast service
  • the first RNTI corresponds to the multicast service
  • the first data packet includes the configuration information
  • the DCI is used to schedule the configuration information.
  • the processing unit is also configured to control the transceiver unit to send the broadcast service to the terminal device according to the configuration information when the configuration information is used for the broadcast service.
  • the configuration information includes the second indication information of the broadcast service; and/or the configuration information is carried on the second LCH; and/or the second data packet or DCI is obtained by scrambling the second RNTI.
  • the second LCH corresponds to the broadcast service
  • the second RNTI corresponds to the broadcast service
  • the first LCH is different from the second LCH
  • the first RNTI is different from the second RNTI
  • the second data packet includes the configuration information
  • the DCI is used to schedule the configuration information.
  • the transceiver unit is also configured to send DCI.
  • the DCI may include third indication information, and the third indication information indicates whether the configuration information for the multicast service has changed.
  • the DCI is scrambled using the first RNTI.
  • the DCI may also include fourth indication information, and the fourth indication information indicates whether the configuration information for the broadcast service changes.
  • the configuration information includes at least one of TMGI, G-RNTI, DRX configuration, MRB configuration or PDSCH configuration.
  • the transceiver unit is also configured to send a system message.
  • the system message may include fifth indication information, and the fifth indication information is used to instruct to provide a non-connection state multicast service.
  • this application discloses a communication device.
  • the communication device can be the terminal equipment (or access network equipment) in the above method embodiment, or a chip provided in the terminal equipment (or access network equipment). or processor.
  • the communication device includes a processor.
  • the processor is coupled to a memory.
  • the memory is used to store programs or instructions.
  • the communication device executes the above method by the terminal equipment (or access network equipment) in the embodiment. , or terminal equipment (or The method executed by the chip or processor in the access network equipment).
  • the present application discloses a communication device.
  • the communication device may be the terminal equipment (or access network equipment) in the above method embodiment, or a chip provided in the terminal equipment (or access network equipment).
  • the communication device includes a processor and a memory.
  • the memory is used to store programs or instructions.
  • the communication device causes the communication device to execute the terminal equipment (or access network equipment) or terminal equipment in the above method embodiment.
  • the present application discloses a communication device.
  • the communication device may be the terminal equipment (or access network equipment) in the above method embodiment, or a chip provided in the terminal equipment (or access network equipment).
  • the communication device includes a communication interface and a processor, and optionally, a memory. Wherein, the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface.
  • the processor executes the computer program or instructions, the communication device is caused to execute the terminal equipment (or access network equipment) in the above method embodiment. ), or a method executed by a chip in a terminal device (or access network device).
  • the present application discloses a computer program product.
  • the computer program product includes: computer program code.
  • the computer program code is run on a processor, the above methods are executed.
  • the present application discloses a chip system.
  • the chip system includes a processor and is used to implement the functions in each of the above methods.
  • the chip system also includes a memory for storing program instructions and/or data.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present application discloses a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program. When the computer program is run, the above methods are implemented.
  • FIG. 1 is a schematic diagram of MBS data transmission disclosed in the embodiment of the present application.
  • Figure 2 is a schematic diagram of a network architecture disclosed in an embodiment of this application.
  • Figure 3 is a schematic transmission diagram of a multicast service disclosed in the embodiment of the present application.
  • Figure 4 is a schematic transmission diagram of a broadcast service disclosed in the embodiment of the present application.
  • Figure 5 is a schematic diagram of the user plane protocol stack structure of MBS transmission disclosed in the embodiment of the present application.
  • Figure 6 is a schematic diagram of a UE receiving broadcast services disclosed in the embodiment of the present application.
  • Figure 7 is a schematic diagram of an MCCH sending mechanism disclosed in the embodiment of the present application.
  • Figure 8 is a schematic flowchart of a communication method disclosed in the embodiment of the present application.
  • Figure 9 is a schematic diagram of a MAC data packet including two first configuration information disclosed in the embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application.
  • Figure 11 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application.
  • Figure 12 is a schematic structural diagram of yet another communication device disclosed in an embodiment of the present application.
  • Figure 2 is a schematic diagram of a network architecture disclosed in an embodiment of this application.
  • the network architecture may include a terminal device 201, an access network device 202, a core network device 203 and a data server 204.
  • the data server is used to send MBS data to the core network equipment.
  • Core network equipment is used to send MBS data to access network equipment through MBS sessions.
  • Access network equipment is used to send MBS data to terminal equipment through MRB.
  • the terminal device can receive MBS data from the access network device through MRB.
  • Terminal equipment can be called user equipment (UE), mobile station (MS), mobile terminal (MT), etc. It refers to a device that provides voice and/or data connectivity to users.
  • the terminal device can be a mobile phone, a handheld terminal, a customer premise equipment (CPE), a laptop, a subscriber unit, a cellular phone, a smart phone, or a computing device.
  • CPE customer premise equipment
  • wireless data card personal digital assistant (PDA) computer, tablet computer, computer with wireless transceiver function, wireless modem, tactile terminal device, handheld device (handheld), laptop Computer (laptop computer), session initiation protocol (SIP) phone, cordless phone (cordless phone) or wireless local loop (WLL) station, machine type communication (MTC) terminal, Wearable devices (such as smart watches, smart bracelets, pedometers, etc.), vehicle-mounted terminal devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), extended reality (extended reality, XR) terminal devices , virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control (industrial control), smart home equipment (such as refrigerators, TVs, air conditioners, electricity meters, etc.), smart Robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless data cards, wireless terminals in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart homes, flying equipment
  • the terminal device may also be a terminal device in a future communication system (such as a sixth generation (6th generation, 6G) communication system, etc.) or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc. .
  • 6G networks can further expand the form and function of fifth generation (5th generation, 5G) communication terminal equipment.
  • 6G terminal equipment includes but is not limited to cars, cellular network terminal equipment (integrated satellite terminal functions), drones, Internet of things (IoT).
  • Access network equipment is a radio access network (RAN) device or node that provides wireless access to terminal devices. It has wireless transceiver functions and is mainly responsible for wireless resource management, QoS flow management, data compression and encryption on the air interface side. and other functions. Access network equipment can include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), pico base stations, small stations, relay stations, access point satellites, balloon stations, etc. Access network equipment may also include evolved base stations (evolved Node B, eNB or eNodeB) in long term evolution (LTE). The access network equipment can also include the next generation base station (next generation Node B, gNB) base station gNB or transmission and receiving point (TRP) in the 5G network.
  • RAN radio access network
  • Access network equipment can also include base stations evolved after the third generation partnership project (3GPP), or base stations in future evolved PLMNs, broadband network gateways (BNG), 3GPP aggregation switches, or Non-3GPP access equipment, access point (AP), transmitting point (TP), mobile switching center, etc. in wireless fidelity (WiFi) system, or device-to-device (device) Devices that undertake base station functions in -to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications.
  • 3GPP third generation partnership project
  • BNG broadband network gateways
  • 3GPP aggregation switches or Non-3GPP access equipment
  • AP access point
  • TP transmitting point
  • WiFi wireless fidelity
  • D2D
  • Core network equipment refers to equipment in the core network (CN) that provides business support for terminal equipment. It is mainly responsible for registration, call connection, billing, mobility management, providing user connections, user management, and business management. Finish Bearing, data processing and routing functions.
  • Core access network equipment can correspond to different equipment in different communication systems.
  • a mobility management entity mobility management entity, MME
  • a serving gateway serving gateway, S-GW
  • the 5G communication system can correspond to the access and mobility management function (AMF) network element, the session management function (SMF) network element, and the user plane function (user plane function).
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • the next generation communication system or future communication system it may be one or more network elements, equipment or entities that provide service support for terminal equipment.
  • the data server is used to provide MBS data.
  • the network architecture shown in Figure 2 is not limited to only including the terminal equipment 201, access network equipment 202, core network equipment 203 and data server 204 shown in the figure, and may also include other devices not shown in the figure. Terminal equipment, access network equipment, core network equipment and data servers, the details of which are not listed here in this application.
  • the above network architecture can also be applied to narrowband-internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate GSM evolution system (enhanced data rate for GSM evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division synchronous code division multiple access system (time division-synchronization code communication systems evolved after 5G such as division multiple access (TD-SCDMA) and 6G.
  • NB-IoT narrowband-internet of things
  • GSM global system for mobile communications
  • GSM evolution system enhanced data rate for GSM evolution, EDGE
  • wideband code division multiple access system wideband code division multiple access, WCDMA
  • code division multiple access 2000 system code division multiple access, CDMA2000
  • time division synchronous code division multiple access system time division-synchronization code communication systems evolved after 5G such as division multiple access (TD-SCDMA) and 6G.
  • Figure 3 is a schematic transmission diagram of a multicast service disclosed in an embodiment of the present application.
  • the multicast service is designed for services with high QoS requirements. It requires group management for the multicast service and can provide the same or similar QoS level as the unicast service.
  • the core network needs to manage the joining and exiting of UEs.
  • the transmission between the core network and the access network relies on protocol data unit (PDU) sessions, and new MBS QoS flows are introduced.
  • PDU protocol data unit
  • For the access network it supports PTP and PTM transmission methods to send data to the UE, and supports dynamic switching between PTP and PTM controlled by the access network.
  • Multicast services are currently only provided to UEs in RRC connected state, and the access network and core network need to maintain UE-related information corresponding to the multicast service group.
  • the MBS session deactivation/activation process triggered by the core network is also supported to change the service status, and the UE does not perceive the service status.
  • the multicast service can send data within a limited area or send different contents in different areas, that is, the multicast service is a local multicast service.
  • the broadcast service is designed for services with low QoS requirements, similar to the single cell point to multipoint (SC-PTM) service in LTE.
  • the network provides best effort QoS.
  • the broadcast service supports UEs in any RRC state.
  • Figure 4 is a schematic transmission diagram of a broadcast service disclosed in an embodiment of the present application.
  • the core network and the access network do not need to maintain a UE group for receiving related broadcast services.
  • the UE When a service is being provided, the UE independently receives it according to the configuration information.
  • the data transmission of the broadcast service like the multicast service, is only designed for downlink (DL). Different from the multicast service, the broadcast service only supports the PTM transmission method.
  • the configuration of the broadcast service and the reception of the multicast service The configuration is completely independent. Broadcasting services must be limited to a certain range.
  • one service can provide different contents (ie, local broadcast service) in different areas.
  • the protocol stack can include the RRC layer, the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, the radio link control (radio link control, RLC) layer, and the MAC layer and physical (PHY) layer, etc.
  • the physical layer is located at the lowest layer (i.e., layer one)
  • the MAC layer, RLC layer, PDCP layer, and SDAP layer belong to the second layer (i.e., layer two)
  • the RRC layer belongs to the third layer (i.e., layer three).
  • Figure 5 is a schematic diagram of a user plane protocol stack structure for MBS transmission disclosed in an embodiment of the present application.
  • the PHY is at the bottom layer
  • the MAC layer is above the PHY layer
  • the RLC layer is above the MAC layer
  • the PDCP layer is above the RLC layer.
  • MBS services are usually services sent by access network equipment to terminal equipment. Therefore, when transmitting MBS data, the transmission process of MBS data is:
  • the MBS data first arrives at the PDCP layer of the access network device. After being processed by the PDCP layer of the access network device, it is transmitted to the RLC layer and MAC layer of the access network device. After corresponding processing, it is transferred from the physical layer of the access network device to Send it out and transmit it to the UE through the air interface.
  • Each protocol layer of the UE performs corresponding processing on the MBS data in sequence in the opposite processing order as that of the access network device.
  • Each data in the wireless bearer needs to be processed by each layer, and each layer has corresponding Functional entities to perform corresponding functions.
  • the PDCP entity of the PDCP layer can include a PDCP entity, and the radio bearer configuration can be associated with one or more RLC entities, and each RLC entity can correspond to an LCH.
  • the broadcast technology of NR MBS introduces two logical channels, multicast broadcast service control channel (MBS control channel, MCCH) and multicast traffic channel (MBS traffic channel, MTCH).
  • MCCH is used to transmit control information, including MTCH configuration information, such as G-RNTI and DRX parameters corresponding to MTCH.
  • MCCH is sent periodically.
  • the MTCH logical channel carries user data of the broadcast service.
  • MTCH is scheduled through MCCH.
  • the configuration of MTCH is G-RNTI level, which can also be said to be MBS service level.
  • gNB uses G-RNTI to schedule service data to multiple UEs at the same time, and each G-RNTI can be associated with at least one broadcast service.
  • FIG. 6 is a schematic diagram of a UE receiving a broadcast service disclosed in an embodiment of the present application.
  • the system information includes control information for transmitting broadcast services, that is, MCCH configuration information.
  • MCCH configuration information includes MCCH repetition period (repetition period, RP), offset (mcch-Offset), MCCH transmission time (mcch-duration) and modification period (modification period, MP).
  • RP partition period
  • mcch-Offset MCCH transmission time
  • modification period modification period
  • MP modification period
  • the UE reads the MCCH message according to the MCCH configuration information.
  • the MCCH message includes the MBS broadcast configuration information.
  • the MBS broadcast configuration information includes the MTCH configuration information, G-RNTI, TMGI and other necessary configurations to accept the broadcast service.
  • the UE receives broadcast service data on the MTCH according to the MBS broadcast configuration information.
  • the cells of the MCCH message can be as follows:
  • FIG. 7 is a schematic diagram of an MCCH transmission mechanism disclosed in an embodiment of the present application.
  • MCCH is sent repeatedly in each MP, and the repetition period is RP.
  • the contents of MCCH are the same.
  • the access network device sends physical downlink control channel (PDCCH) including a modification notification to the UE, and the modification notification is an MCCH modification notification (change notification).
  • PDCCH physical downlink control channel
  • the UE detects a 2-bit MCCH modification notification on the PDCCH, it indicates that the modification notification is detected and the UE reacquires the MCCH.
  • the UE can obtain MCCH scheduling information by detecting the MCCH-RNTI scrambled PDCCH.
  • the first bit in the MCCH modification notification indicates that the MCCH modification is due to session start, and the second bit in the MCCH modification notification indicates that the MCCH modification is due to session modification, session stop, or neighbor cell list update.
  • the multicast service supports the PTM transmission method
  • the network sends data through the PTM transmission method
  • the multicast technology is similar to the broadcast technology.
  • the UE has relevant PTM reception configuration (such as G-RNTI, etc.)
  • the UE can RRC receives multicast services in a non-connected state. From the perspective of the network sending data, the network does not need to provide an additional piece of data scheduled by C-RNTI. It can still provide services for RRC non-connected UEs by still sending data scheduled by G-RNTI for RRC connected UEs. Under this premise, providing multicast services to RRC non-connected UEs does not introduce particularly large additional overhead, because the RRC non-connected UEs still receive the same data sent by the access network device.
  • One method of providing multicast services for UEs in RRC non-connected state is: the UE receives the PTM configuration information of the multicast service in the RRC connected state, the UE switches from the RRC connected state to the RRC non-connected state, and then uses the PTM configuration received in the RRC connected state. Messages are received in RRC non-connected state to receive multicast services.
  • the UE if the UE wants to receive multicast services in the RRC non-connected state, it must first enter the RRC connected state to obtain PTM configuration information. When these UEs enter the RRC connected state, the network needs to provide the same PTM configuration information to each of these UEs through dedicated signaling, resulting in a waste of transmission resources.
  • the network is likely to provide multicast services to RRC non-connected UEs due to network congestion.
  • the network is already in a blocked state, if there are UEs that want to receive services in RRC non-connected state, then let these UEs enter RRC connection state accessing PTM configuration information will increase the degree of network congestion.
  • the PTM configuration information of the multicast service is allowed to be updated, and the access network device can update the PTM configuration information for the UE through RRC dedicated signaling. If the above method is adopted, when the network needs to update the PTM configuration information, the network needs to first page the UE receiving multicast services in the RRC non-connected state to the connected state to provide the updated PTM configuration information. If a large number of UEs receive multicast services in the RRC non-connected state, the large number of accesses caused by paging at this time will impose a heavy burden on the network.
  • embodiments of the present application provide a communication method for sending configuration information for multicast services to a terminal device in a non-connected state.
  • the RRC non-connected state can be the RRC deactivated state or the third state (RRC_INACTIVE), or it can be the RRC idle state (RRC_IDLE).
  • the RRC status of the terminal device may include RRC connected status (RRC_CONNECTED), RRC_INACTIVE and RRC_IDLE.
  • RRC_CONNECTED links are established between the terminal device and the access network device and between the access network device and the core network device.
  • RRC_INACTIVE links are established between the access network device and the core network device and between the access network device and the core network device.
  • RRC_INACTIVE a link is established between the access network device and the core network device, and the link between the terminal device and the access network device is released. Although the link between the terminal device and the access network device is The path is released, but the access network device stores the context of the terminal device.
  • the access network device can quickly restore the link between the terminal device and the access network device based on the context of the terminal device. road.
  • the terminal device is in the RRC_IDLE state, there is no link between the terminal device and the access network device, or between the access network device and the core network device.
  • the terminal device and the access network device need to be established. and between access network equipment and core network equipment.
  • Figure 8 is a schematic flow chart of a communication method disclosed in an embodiment of the present application.
  • the access network device and the terminal device are used as the execution subjects of the interaction gesture as an example to illustrate the method, but this application does not limit the execution subjects of the interaction gesture.
  • the access network device in Figure 8 may also be a chip, chip system, or processor that supports the access network device to implement the method, or may be a logic module or software that can realize all or part of the functions of the access network device.
  • the terminal device in Figure 8 may also be a chip, chip system, or processor that supports the terminal device to implement the method, or may be a logic module or software that can realize all or part of the functions of the terminal device.
  • the communication method may include the following steps.
  • the access network device sends the first configuration information through the multicast broadcast service control channel.
  • the terminal device receives the first configuration information through the multicast broadcast service control channel.
  • the access network device may send the first configuration information through the multicast broadcast service control channel.
  • the first configuration information is used for the broadcast service.
  • the first configuration information is used for the multicast service.
  • the multicast broadcast service control channel is used to transmit configuration information for terminal equipment in the RRC non-connected state.
  • the multicast broadcast service control channel may correspond to different names.
  • the multicast broadcast service control channel may be single cell MCCH (single cell MCCH, SC-MCCH).
  • the multicast broadcast service control channel may be MCCH.
  • the multicast service in this application can be understood as the multicast service provided to terminal equipment in the RRC non-connected state.
  • the first configuration information when there is a multicast service transmitted to the terminal device, the first configuration information may include first indication information of the multicast service; when there is a broadcast service transmitted to the terminal device, the first configuration information The information may include second indication information of the broadcast service.
  • the terminal device may determine that the first configuration information is used for the multicast service.
  • the terminal device may determine that the first configuration information is used for the broadcast service.
  • the access network device may indicate whether the first configuration information is used for multicast service or broadcast service through a bit, flag bit or indicator bit in the first configuration information. For example, when the first configuration information is used for multicast services, the value of this bit, flag bit or indicator bit is 1. When the first configuration information is used for broadcast services, the value of this bit, flag bit or indicator bit is 1. The value is 0. For another example, when the first configuration information is used for broadcast services, the value of this bit, flag bit or indicator bit is 1. When the first configuration information is used for multicast services, the value of this bit, flag bit or indicator bit is 1. The bit value is 0. For another example, when the first configuration information is used for multicast services, this ratio exists in the first configuration information. Special, flag bit or indicator bit, its value can be 1 or 0. When the first configuration information is used for broadcast services, this bit, flag bit or indicator bit does not exist in the first configuration information.
  • the access network device may indicate whether the first configuration information is used for multicast service or broadcast service through a certain field or configuration. For example, when the first configuration information is used for multicast services, the first configuration information may include this field or configuration; when the first configuration information is used for broadcast services, the first configuration information may not include this field or configuration. configuration. For another example, when the first configuration information is used for broadcast services, the first configuration information may include this field or configuration; when the first configuration information is used for multicast services, the first configuration information may not include this field. or configuration.
  • the access network device may indicate whether the first configuration information is used for multicast service or broadcast service through a certain time-frequency resource. For example, when the first configuration information is used for multicast services, the first configuration information may be transmitted through this time-frequency resource; when the first configuration information is used for broadcast services, the first configuration information may not be transmitted through this time-frequency resource. frequency resource transmission. For another example, when the first configuration information is used for broadcast services, the first configuration information may be transmitted through this time-frequency resource; when the first configuration information is used for multicast services, the first configuration information may not be transmitted through this time-frequency resource. Time-frequency resource transmission.
  • the access network device may indicate whether the first configuration information is used for multicast service or broadcast service through two bits, flag bits or indicator bits in the first configuration information. Among them, one bit, flag bit or indicator bit is used to indicate the broadcast service, and the other bit, flag bit or indicator bit is used to indicate the multicast service. In another implementation manner, the access network device may indicate whether the first configuration information is used for multicast service or broadcast service through two fields or configurations. Among them, one field or configuration is used to indicate the broadcast service, and the other field or configuration is used to indicate the multicast service. In another implementation manner, the access network device may indicate whether the first configuration information is used for multicast service or broadcast service through two time-frequency resources. Among them, one time-frequency resource is used to indicate broadcast services, and the other time-frequency resource is used to indicate multicast services.
  • the above is an exemplary description of the first indication information of the multicast service or the second indication information of the broadcast service included in the first configuration information, and does not constitute a limitation thereon.
  • the first indication information of the multicast service can be understood as the first indication information is used to indicate the multicast service.
  • the second indication information of the broadcast service can be understood as the second indication information is used to indicate the broadcast service.
  • the first configuration information is carried on the first LCH; when there is a broadcast service transmitted to the terminal device, the first configuration information is carried on the first LCH. 2 LCH.
  • the first LCH corresponds to the multicast service
  • the second LCH may correspond to the broadcast service
  • the first LCH and the second LCH are different.
  • the terminal device may determine that the first configuration information is used for the multicast service; when the first configuration information is carried on the second LCH, the terminal device may determine that the first configuration information is carried on the second LCH.
  • One configuration information is used for broadcast services.
  • the multicast service and the broadcast service may correspond to different LCHs, that is, the LCHs used to carry the first configuration information of the broadcast service and the multicast service may be different.
  • Different LCHs have different logical channel identifiers (LCIDs). Therefore, multicast services and broadcast services can correspond to different LCIDs.
  • LCIDs logical channel identifiers
  • the correspondence between the service type and the LCH information may be a default configuration, that is, specified by the protocol. At this time, the access network device does not need to configure the corresponding relationship between the service type and the LCH information to the terminal device.
  • the service type can be multicast service or broadcast service.
  • the correspondence between service types and LCH information can be shown in Table 1:
  • Table 1 is an exemplary description of the correspondence between service types and LCH information, and does not constitute a limitation.
  • the LCH information may also be other information that can uniquely identify the LCH.
  • the correspondence between the service type and the LCH information may also be determined by the access network device.
  • the access network device may also send the second configuration information to the terminal device.
  • the terminal device may also receive second configuration information from the access network device. The second configuration information is used to configure the corresponding relationship between the service type and the LCH.
  • the access network device may send the second configuration information to the terminal device through a system message.
  • the terminal device may receive the second configuration information from the access network device through a system message.
  • the access network device may also send the second configuration information to the terminal device during the random access process.
  • the access network device may send the second configuration information to the terminal device through message 2, message 4 or message B during the random access process.
  • the access network device may also send the second configuration information to the terminal device through RRC configuration.
  • the access network device may also send the second configuration information to the terminal device through other messages or signaling in other processes, such as MAC signaling or DCI, which is not limited here.
  • the access network device When the access network device has two first configuration information that need to be sent to the terminal device, one first configuration information is used for the multicast service and the other first configuration information is used for the broadcast service, from the perspective of group packets , the access network device can cascade or concatenate the two first configuration information in a transport block (TB) at the MAC layer for transmission. From a scheduling perspective, the two first configuration information can use different LCHs and can be sent to the terminal device in the same time-frequency resource. The terminal device can determine the first configuration information based on the LCH information in the MAC packet header. Used for multicast services or broadcast services. Please refer to Figure 9.
  • Figure 9 is a schematic diagram of a MAC data packet including two first configuration information disclosed in an embodiment of the present application.
  • the header of the MAC data packet includes two LCH identifiers, namely LCID1 and LCID2.
  • LCID1 and LCID2 can respectively correspond to broadcast services and multicast services.
  • the terminal device can read the MAC sub (sub) PDU corresponding to LCID2.
  • the terminal device can read the MAC sub-PDU corresponding to LCID1.
  • the terminal device may read the MAC sub-PDU corresponding to LCID1 and LCID2.
  • the access network device may use the first RNTI to scramble the first configuration information for the multicast service, and may use the second RNTI to scramble the first configuration information for the broadcast service.
  • the terminal device can use the first RNTI to descramble to obtain the first configuration information for the multicast service, and can use the second RNTI to descramble to obtain the first configuration information for the broadcast service.
  • the first RNTI corresponds to the multicast service
  • the second RNTI corresponds to the broadcast service
  • the first RNTI and the second RNTI are different.
  • the first data packet when there is a multicast service transmitted to the terminal device, the first data packet is scrambled by the first RNTI; when there is a broadcast service transmitted to the terminal device, the second data packet is obtained by The second RNTI is obtained by scrambling.
  • the first data packet includes first configuration information
  • the second data packet includes first configuration information.
  • the terminal device may determine that the first configuration information is used for the multicast service, and when the second data packet is successfully descrambled using the second RNTI, the terminal device The device may determine that the first configuration information is used for the broadcast service.
  • the first DCI when there is a multicast service transmitted to the terminal device, the first DCI is obtained by scrambling the first RNTI; when there is a broadcast service transmitted to the terminal device, the first DCI is obtained by scrambling the first RNTI. Two RNTIs are obtained by scrambling. The first DCI is used to schedule the first configuration information.
  • the terminal device may determine that the first configuration information is used for the multicast service, and when the first DCI is successfully descrambled using the second RNTI, the terminal device may It is determined that the first configuration information is used for the broadcast service.
  • multicast services and broadcast services can correspond to different RNTIs.
  • the correspondence between the service type and the RNTI information may be a default configuration, that is, specified by the protocol. At this time, access The network device does not need to configure the corresponding relationship between the service type and the RNTI information to the terminal device.
  • the correspondence between service types and RNTI information can be shown in Table 2:
  • Table 2 is an exemplary description of the correspondence between service types and RNTI information, and does not constitute a limitation.
  • the RNTI information may also be other information that can uniquely identify the RNTI.
  • the correspondence between the service type and the RNTI information may also be determined by the access network device.
  • the access network device may also send the third configuration information to the terminal device.
  • the terminal device may also receive third configuration information from the access network device. The third configuration information is used to configure the correspondence between the service type and the RNTI information.
  • the access network device may send the third configuration information to the terminal device through a system message.
  • the access network device may also send the third configuration information to the terminal device during the random access process.
  • the access network device may send the third configuration information to the terminal device through message 2, message 4 or message B during the random access process.
  • the access network device may also send third configuration information to the terminal device through RRC configuration.
  • the access network device may also send the third configuration information to the terminal device through other messages or signaling in other processes, which is not limited here.
  • the access network device When the access network device has two first configuration information that need to be sent to the terminal device, one first configuration information is used for the multicast service and the other first configuration information is used for the broadcast service, from the perspective of group packets , the access network device cannot group the two first configuration information into the same MAC data packet.
  • the two first configuration information can be scrambled using different RNTIs.
  • the first configuration information used for the broadcast service may be scrambled using the existing RNTI of the broadcast service
  • the first configuration information used for the multicast service may be scrambled using other RNTIs. It can be seen that the same data packet can only include the first configuration information for the multicast service, or the first configuration information for the broadcast service, but the same data packet can include multiple first configuration information for the multicast service. information, or multiple first configuration information for broadcast services.
  • the access network device may also indicate the role of the first configuration information to the terminal device through a combination of the above three situations.
  • the access network device cannot combine the first configuration information for broadcast service and the first configuration information for multicast service. Group packages into the same TB.
  • the access network device may use the first configuration information for the broadcast service and the first configuration information for the multicast service.
  • the first configuration information for the broadcast service and the first configuration information for the multicast service may not be packaged into the same TB, which is not limited here.
  • the first configuration information may include at least one of TMGI, G-RNTI, DRX configuration, MRB configuration or PDSCH configuration.
  • TMGI is used to identify multicast services or broadcast services.
  • G-RNTI is used to identify the dynamic scheduling of service data.
  • DRX configuration is used for terminal equipment to obtain discontinuous reception configuration, which can prevent the terminal equipment from monitoring the control channel at all times, thereby reducing the power consumption of the terminal equipment.
  • the PDSCH configuration is used by the terminal device to obtain the PDSCH configuration for receiving multicast configuration information or service information.
  • the access network device sends the multicast service to the terminal device in the RRC non-connected state according to the first configuration information.
  • the terminal device when the first configuration information is used for the multicast service, the terminal device receives the multicast service in the RRC non-connected state according to the first configuration information.
  • the access network device may send the multicast service to the terminal device in the RRC non-connected state according to the first configuration information.
  • the access network device sends multicast services to the terminal device in the RRC non-connected state.
  • the terminal device can receive multicast services from the access network device in the RRC non-connected state.
  • multicast services can be transmitted through MTCH or other channels.
  • the terminal equipment receiving the multicast service in the RRC non-connected state can be all the terminal equipment in the RRC non-connected state within the coverage of the access network equipment, or it can be the RRC non-connected terminal equipment within the coverage of the access network equipment. Some of the terminal devices in the connected state. These terminal devices can be terminal devices that are interested in multicast services, or terminal devices that need or want to receive multicast services. They can also be terminal devices that want to receive multicast services. They can also be terminal devices that want to receive multicast services. The terminal equipment may also be the terminal equipment planned to receive multicast services.
  • the access network device sends the broadcast service to the terminal device according to the first configuration information.
  • the terminal device receives the broadcast service according to the first configuration information.
  • the access network device may send the broadcast service to the terminal device according to the first configuration information.
  • the access network device can send broadcast services to the terminal device through the MTCH, and accordingly, the terminal device can receive the broadcast service from the access network device through the MTCH.
  • the terminal equipment receiving the broadcast service in the RRC non-connected state can be all the terminal equipment in the RRC non-connected state within the coverage of the access network equipment, or it can be the RRC non-connected terminal equipment within the coverage of the access network equipment. Some of the terminal devices in the state.
  • This part of the terminal equipment can be a terminal equipment that is interested in broadcast services, or a terminal equipment that needs or wants to receive broadcast services, or a terminal equipment that wishes to receive broadcast services, or a terminal equipment that desires to receive broadcast services, It can also be a terminal device that plans to receive broadcast services.
  • the information elements of the above MCCH message can be modified.
  • the modified information elements of the multicast broadcast service control channel message can be as follows:
  • the MCCH message transmitted on the MCCH is of choice type and can be used to configure broadcast services or multicast services.
  • the access network device can also send a modification notification to the terminal device.
  • the modification notification may indicate whether the first configuration information for the multicast service and/or the first configuration information for the broadcast service changes.
  • the access network device can periodically send modification notifications to the terminal device, or can also send modification notifications to the terminal device when an event is triggered. For example, when the access network device receives a request from the terminal device for asking whether the first configuration information for the multicast service and/or the first configuration information for the broadcast service has changed, the access network device may Send modification notification to the terminal device.
  • the access network device may send the first DCI.
  • the terminal device can also receive the first DCI.
  • First DCI can The third indication information is included, and the third indication information indicates whether the first configuration information used for the multicast service changes. In the case where the first configuration information for the multicast service changes, the third indication information may indicate that the first configuration information for the multicast service changes. In the case where the first configuration information for the multicast service has not changed, the third indication information may indicate that the first configuration information for the multicast service has not changed.
  • the first DCI may use 2 bits to indicate whether the first configuration information used for the multicast service has changed.
  • 2 bits please refer to the description of the 2 bits in the modification notification above, which will not be described again here. .
  • the first DCI may use 1 bit to indicate whether the first configuration information used for the multicast service changes.
  • the first DCI may use at least 3 bits to indicate whether the first configuration information used for the multicast service changes.
  • the access network device can also send the second DCI.
  • the terminal device can also receive the second DCI.
  • the second DCI may include fourth indication information, and the fourth indication information indicates whether the first configuration information used for the broadcast service changes. In the case where the first configuration information of the broadcast service changes, the fourth indication information may indicate that the first configuration information for the broadcast service changes. In the case that the first configuration information for the broadcast service does not change, the fourth indication information may indicate that the first configuration information for the broadcast service does not change.
  • the indication information indicating whether the first configuration information used for the multicast service changes may be the same as the indication information indicating whether the first configuration information used for the broadcast service changes.
  • Use different RNTI for scrambling at this time, the first DCI may be scrambled using the first RNTI.
  • the terminal device uses the first RNTI to descramble to obtain the first DCI.
  • the second DCI may be scrambled using the second RNTI.
  • the terminal device uses the second RNTI to descramble to obtain the second DCI.
  • the second DCI may use 2 bits to indicate whether the first configuration information used for the broadcast service has changed.
  • 2 bits refer to the description of the 2 bits of the modification notification above, which will not be described again here.
  • the terminal equipment receiving the broadcast service and the terminal equipment receiving the multicast service monitor the same 2 bits.
  • 1 bit is used to indicate whether the first configuration information used for the multicast service has changed
  • 2 bit is used to indicate whether the first configuration information used for the broadcast service has changed
  • the terminal device receiving the broadcast service monitors 2 bits, and the receiving group
  • the terminal equipment of the broadcast service monitors 1 bit of the 2 bits. This 1 bit can be the 1st bit among the 2 bits, or it can be the 2nd bit among the 2 bits. At this time, the other 1 bit can be used to indicate other information of the multicast service.
  • the first DCI may also include fourth indication information.
  • the fourth indication information indicates whether the first configuration information used for the broadcast service changes. In the case where the first configuration information of the broadcast service changes, the fourth indication information indicates that the first configuration information for the broadcast service changes. When the first configuration information of the broadcast service has not changed, the fourth indication information indicates that the first configuration information for the broadcast service has not changed.
  • the first DCI may indicate through 4 bits whether the configuration information for the broadcast service and the broadcast service changes. 2 bits among the 4 bits are used to indicate whether the first configuration information of the broadcast service changes, and the remaining 2 bits are used to indicate whether the first configuration information of the multicast service changes.
  • the first DCI may use 3 bits to indicate whether the configuration information for the multicast service and the broadcast service has changed. 2 bits among the 3 bits are used to indicate whether the first configuration information of the multicast service changes, and the remaining 1 bit is used to indicate whether the first configuration information of the broadcast service changes.
  • the first DCI may use 2 bits to indicate whether the configuration information for the multicast service and the broadcast service has changed. 1 bit among these 2 bits is used to indicate whether the first configuration information of the multicast service has changed, and the remaining 1 bit is used to indicate whether the first configuration information of the multicast service has changed. The bit is used to indicate whether the first configuration information of the broadcast service changes.
  • the first DCI may indicate whether the configuration information for the multicast service and the broadcast service changes by using at least 5 bits. For example, 2 bits among the at least 5 bits are used to indicate whether the first configuration information of the broadcast service changes, and the remaining at least 3 bits are used to indicate whether the first configuration information of the multicast service changes.
  • the access network device may send the fifth indication information to the terminal device.
  • the terminal device may receive fifth indication information from the access network device.
  • the fifth indication information may instruct the access network device to provide RRC non-connection state multicast services, may also indicate that the access network device is providing RRC non-connection state multicast services, and may also instruct the access network device to support providing RRC non-connection state. It can also indicate that the access network equipment can provide multicast services in the RRC non-connection state. It can also instruct a certain cell of the access network equipment to provide multicast services in the RRC non-connection state. It can also indicate that the access network equipment can provide multicast services in the RRC non-connection state.
  • a certain cell of the access network equipment is providing RRC non-connection state multicast services. You can also instruct a certain cell of the access network equipment to support providing RRC non-connection state multicast services. You can also instruct a certain cell of the access network equipment to provide RRC non-connection state multicast services. Able to provide RRC non-connection state multicast services.
  • the fifth indication information can be carried in the system message, in message 2, message 4 or message B in the random access process, in the paging message, in the RRC release message, or in the RRC release message. It can be carried in other messages or signaling, and is not limited here.
  • the fifth indication information may be cell-level indication information, and may only instruct the cell to provide RRC non-connected state multicast services, without indicating which RRC non-connected state multicast services are specifically provided.
  • the fifth indication information may also be service group level indication information, and may indicate a specific multicast service group provided by the cell.
  • the multicast service group can be indicated by G-RNTI, service area identity, frequency selection identity, TMGI, MBS session identity, or network protocol (internet protocol, IP) multicast address.
  • the fifth indication information may also be service level indication information, and may indicate specific multicast services provided by the cell.
  • the terminal device may monitor the multicast broadcast service control channel when the terminal device needs to receive the multicast service in the RRC non-connection state.
  • the terminal device does not need to monitor the multicast broadcast service control channel. It can be seen that when the terminal device receives the instruction information that the access network device provides the RRC non-connected multicast service, the terminal device can monitor the multicast broadcast service control channel as needed, which can reduce unnecessary monitoring and thus reduce the cost. The power consumption of the terminal device.
  • FIG. 10 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application.
  • the communication device may include a transceiver unit 1001 and a processing unit 1002.
  • the communication device may be a terminal device, a chip, a chip system, or a processor that supports the terminal device to implement the method, or a logic module or software that can realize all or part of the functions of the terminal device. in:
  • Transceiver unit 1001 configured to receive configuration information through the multicast broadcast service control channel, where the configuration information is used for multicast services or broadcast services;
  • the processing unit 1002 is configured to control the transceiver unit 1001 to receive the multicast service in the RRC non-connected state according to the configuration information when the configuration information is used for the multicast service.
  • processing unit 1002 is also used to:
  • the configuration information includes the first indication information of the multicast service, determine that the configuration information is used for the multicast service.
  • the configuration information is carried on the first LCH, it is determined that the configuration information is used for the multicast service, and the first LCH corresponds to the multicast service; and/or
  • the first data packet may include the configuration information
  • the DCI is used for scheduling the configuration information
  • the first RNTI corresponds to Multicast service.
  • the processing unit 1002 is also configured to control the transceiver unit 1001 to receive the broadcast service according to the configuration information when the configuration information is used for the broadcast service.
  • processing unit 1002 is also used to:
  • the configuration information includes the second indication information of the broadcast service, determine that the configuration information is used for the broadcast service.
  • the configuration information is carried on the second LCH, it is determined that the configuration information is used for the broadcast service, the second LCH corresponds to the broadcast service, and the first LCH is different from the second LCH; and/or
  • the second data packet or DCI is successfully descrambled using the second RNTI, it is determined that the configuration information is used for the broadcast service, the second data packet includes the configuration information, the second RNTI corresponds to the broadcast service, and the first RNTI and the second RNTI Differently, the DCI is used to schedule the configuration information.
  • the transceiver unit 1001 is also configured to receive DCI.
  • the DCI may include third indication information, and the third indication information indicates whether the configuration information for the multicast service has changed.
  • the DCI is scrambled using the first RNTI.
  • the DCI may also include fourth indication information, and the fourth indication information indicates whether the configuration information for the broadcast service changes.
  • the configuration information includes at least one of TMGI, G-RNTI, DRX configuration, MRB configuration or PDSCH configuration.
  • the transceiver unit 1001 is also configured to receive a system message.
  • the system message may include fifth indication information, and the fifth indication information is used to instruct to provide a non-connection state multicast service.
  • transceiver unit 1001 and processing unit 1002 can be obtained directly by referring to the relevant description of the terminal device in the above-mentioned method embodiment shown in Figure 8, and will not be described again here.
  • the communication device may be an access network device, or a chip, chip system, or processor that supports the access network device to implement the method, or may be an access network device that can implement all or part of the method.
  • Functional logic modules or software in:
  • Transceiver unit 1001 configured to send configuration information through the multicast broadcast service control channel, where the configuration information is used for multicast services or broadcast services;
  • the processing unit 1002 is configured to control the transceiver unit 1001 to send the multicast service to the terminal device according to the configuration information when the configuration information is used for the multicast service, and the terminal device is in the RRC non-connected state.
  • the configuration information includes the first indication information of the multicast service; and/or the configuration information is carried on the first LCH; and/or the first data packet or DCI is obtained by scrambling the first RNTI,
  • the first LCH corresponds to the multicast service
  • the first RNTI corresponds to the multicast service
  • the first data packet includes the configuration information
  • the DCI is used to schedule the configuration information.
  • the processing unit 1002 is also configured to control the transceiver unit 1001 to send the broadcast service to the terminal device according to the configuration information when the configuration information is used for the broadcast service.
  • the configuration information includes the second indication information of the broadcast service; and/or the configuration information is carried on the second LCH; and/or the second data packet or DCI is obtained by scrambling the second RNTI.
  • the second LCH corresponds to the broadcast service
  • the second RNTI corresponds to the broadcast service
  • the first LCH is different from the second LCH
  • the first RNTI is different from the second RNTI
  • the second data packet includes the configuration information
  • the DCI is used to schedule the configuration information.
  • the transceiver unit 1001 is also configured to send DCI.
  • the DCI may include third indication information, and the third indication information indicates whether the configuration information for the multicast service has changed.
  • the DCI is scrambled using the first RNTI.
  • the DCI may also include fourth indication information, and the fourth indication information indicates whether the configuration information for the broadcast service changes.
  • the configuration information includes at least one of TMGI, G-RNTI, DRX configuration, MRB configuration or PDSCH configuration.
  • the transceiver unit 1001 is also configured to send a system message.
  • the system message may include fifth indication information, and the fifth indication information is used to instruct to provide a non-connection state multicast service.
  • transceiver unit 1001 and processing unit 1002 can be obtained directly by referring to the relevant description of the access network device in the above method embodiment shown in Figure 8, and will not be described again here.
  • the communication device may include a processor 1101, a memory 1102, a transceiver 1103 and a bus 1104.
  • the memory 1102 may exist independently and may be connected to the processor 1101 through a bus 1104.
  • Memory 1102 may also be integrated with processor 1101.
  • bus 1104 is used to realize the connection between these components.
  • transceiver 1103 may include a transmitter 11031, a receiver 11032, and an antenna 11033.
  • transceiver 1103 may include a transmitter (i.e., an output interface) and a receiver (i.e., an input interface).
  • a transmitter may include a transmitter and an antenna, and a receiver may include a receiver and an antenna.
  • the communication device may be an access network device or a module in the access network device.
  • the processor 1101 is used to perform the operations performed by the processing unit 1002 in the above embodiment
  • the transceiver 1103 is used to perform the operations performed by the transceiver unit 1001 in the above embodiment.
  • the above communication device can also be used to perform various methods performed by the access network device in the above method embodiment in Figure 8, which will not be described again.
  • the communication device may be a terminal device or a module in the terminal device.
  • the processor 1101 is used to perform the operations performed by the processing unit 1002 in the above embodiment
  • the transceiver 1103 is used to perform the operations performed by the transceiver unit 1001 in the above embodiment.
  • the above communication device can also be used to perform various methods performed by the terminal device in the above method embodiment in Figure 8, which will not be described again.
  • FIG. 12 is a schematic structural diagram of yet another communication device disclosed in an embodiment of the present application.
  • the communication device may include an input interface 1201 , a logic circuit 1202 and an output interface 1203 .
  • the input interface 1201 and the output interface 1203 are connected through a logic circuit 1202.
  • the input interface 1201 is used to receive information from other communication devices
  • the output interface 1203 is used to output, schedule or send information to other communication devices.
  • the logic circuit 1202 is used to perform operations other than the operations of the input interface 1201 and the output interface 1203, such as implementing the functions implemented by the processor 1101 in the above embodiment.
  • the communication device may be a terminal device (or a module within the terminal device), or may be an access network device (or a module within the access network device).
  • a terminal device or a module within the terminal device
  • an access network device or a module within the access network device
  • each of the above modules can be independent or integrated together.
  • the transmitter, receiver and antenna can be separate or integrated into a transceiver.
  • the input interface and the output interface can be independent or integrated into a communication interface.
  • An embodiment of the present application also discloses a computer-readable storage medium on which instructions are stored. When the instructions are executed, the method in the above method embodiment is executed.
  • An embodiment of the present application also discloses a computer program product including computer instructions. When the computer instructions are executed, the method in the above method embodiment is executed.
  • An embodiment of the present application also discloses a communication system, which may include a centralized controller, a route calculator, and a route executor.
  • a communication system which may include a centralized controller, a route calculator, and a route executor.
  • a route calculator for specific description, reference may be made to the communication method shown above.
  • unit and the like used in this specification are used to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software or software in execution.
  • a unit may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, a thread of execution, a program and/or distributed between two or more computers. Additionally, these units can execute from various computer-readable media having various data structures stored thereon.
  • a unit may, for example, respond to a signal having one or more data packets (eg, data from a second unit interacting with another unit, a local system, a distributed system, and/or a network. For example, the Internet interacting with other systems via signals) Communicate through local and/or remote processes.
  • the number of nouns means “singular noun or plural noun", that is, “one or more”, unless otherwise specified.
  • At least one means one or more
  • plural means two or more
  • a plurality in “one or more” means two or more.
  • “And/or” describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an “or” relationship.
  • A/B means: A or B.
  • At least one of the following or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.

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Abstract

一种通信方法及装置，该方法包括：接入网设备通过多播广播业务控制信道发送配置信息，所述配置信息用于组播业务或广播业务；在所述配置信息用于组播业务的情况下，根据所述配置信息向处于无线资源控制RRC非连接态的终端设备发送组播业务。由于可以通过多播广播业务控制信道一次性向多个终端设备发送用于组播业务的配置信息，因此，可以减少信息的传输数量，从而可以节省信令开销和传输资源。

Description

一种通信方法及装置
本申请要求于2022年04月22日提交中国专利局、申请号为202210426524.1、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
本申请实施例涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
多播广播业务(multicast and broadcast service，MBS)业务是面向多个用户设备(user equipment，UE)的业务。MBS业务可以包括直播业务、公共安全业务、批量软件更新业务等。如图1所示，数据服务器可以将MBS数据发送给核心网设备，核心网设备可以将MBS数据发送给接入网设备，接入网设备可以将MBS数据发送给接收MBS数据的一个或多个UE。
数据服务器与核心网设备之间可以通过公共传输通道MBS业务(service)传输MBS数据。核心网设备与接入网设备之间可以通过公共的传输通道MBS会话(session)传输MBS数据，每个MBS会话可以包括至少一个MBS服务质量(quality of service，QoS)流(flow)。而从接入网设备向UE发送MBS数据的时候，MBS数据中的数据包可以通过MBS无线承载(MBS radio bearer，MRB)进行传输。MRB具有两种传输方式，一种传输方式为点到多点(point to multi-point，PTM)传输，另一种传输方式为点到点(point to point，PTP)传输。PTM传输为接入网设备将MBS数据传输给多个UE，PTP传输为接入网设备将MBS数据传输给一个UE。
从系统的管理控制流程以及传输方式角度来说，新无线(new radio，NR)设计的MBS业务可以分为组播业务以及广播业务两类。组播业务只能提供给无线资源控制(radio resource control，RRC)连接态UE，广播业务支持任何RRC状态的UE。
由于组播业务支持PTM传输方式，因此，在网络通过PTM传输方式发送数据的情况下，组播技术类似于广播技术，只要UE有相关的PTM接收配置，UE也有可能在RRC非连接态接收组播业务。然而，如何解决UE在RRC非连接态下接收组播业务对应的PTM接收配置的问题，还有待进一步研究。
发明内容
本申请实施例公开了一种通信方法及装置，用于节省信令开销和传输资源。
第一方面，本申请公开一种通信方法，该通信方法可以应用于终端设备，也可以应用于终端设备中的模块(例如，芯片)，还可以应用于能实现全部或部分终端设备功能的逻辑模块或软件。下面以执行主体是终端设备为例进行描述。该通信方法可以包括：终端设备通过多播广播业务控制信道接收配置信息，该配置信息用于组播业务或广播业务；在该配置信息用于组播业务的情况下，根据该配置信息在RRC非连接态接收组播业务。其中，RRC非连接态可以为RRC空闲态，也可以为RRC去激活态。
本申请实施例中，终端设备可以通过多播广播业务控制信道接收到来自接入网设备的用 于组播业务的配置信息，即可以在RRC非连接态接收到用于组播业务的配置信息，进而可以根据用于组播业务的配置信息在RRC非连接态接收组播业务。可见，终端设备在接收整个组播业务的过程中不需要进入RRC连接态，因此，接入网设备不需要通过专用信令向接收组播业务的每个终端设备分别发送相同的用于组播业务的配置信息，仅需要通过多播广播业务控制信道一次性向多个终端设备发送用于组播业务的配置信息即可，可以减少信息的传输数量，从而可以节省信令开销和传输资源。此外，由于终端设备在接收整个组播业务的过程中不需要进入RRC连接态，可以减少使用接入资源的终端设备，从而可以节约接入资源，同时可以避免由于终端设备进入RRC连接态造成网络阻塞或加重阻塞程度。进一步地，由于终端设备在接收整个组播业务的过程中不需要进入RRC连接态，不需要在RRC连接态与RRC非连接态之间进行切换，可以减少组播业务的传输时间，从而可以提高组播业务的传输效率。进一步地，终端设备进入连接态时带宽可能切换到初始(initial)带宽部分(bandwitch，BWP)，在带宽切换过程中终端设备可能无法接收组播业务造成丢包，由于终端设备在接收整个组播业务的过程中不需要进入RRC连接态，不需要进行带宽切换，因此可以避免带宽切换引起的丢包。
作为一种可能的实施方式，该通信方法还可以包括：在该配置信息包括组播业务的第一指示信息的情况下，终端设备可以确定该配置信息用于组播业务；和/或在该配置信息承载于第一逻辑信道(logic channel，LCH)的情况下，终端设备可以确定该配置信息用于组播业务，第一LCH对应组播业务；和/或在使用第一无线网络临时标识(radio network temporary identifier，RNTI)成功解扰第一数据包或下行控制信息(downlink control information，DCI)的情况下，终端设备可以确定该配置信息用于组播业务，第一数据包可以包括该配置信息，该DCI用于调度该配置信息，第一RNTI对应组播业务。
本申请实施例中，由于终端设备在RRC非连接态能够准确地区分出来用于组播业务的配置信息，因此，可以提高在RRC非连接态接收组播业务的准确性。在用于组播业务的配置信息包括组播业务的第一指示信息的情况下，用于组播业务的配置信息与现有的用于广播业务的配置信息相比改动较少，从而可以提高与现有协议或技术之间的兼容性。在用于组播业务的配置信息承载于第一LCH的情况下，由于配置信息中不需要专门的信息来指示配置信息用于组播业务，因此，可以减少配置信息的数据量，从而可以节约传输资源；进一步地，LCH位于媒体接入控制(media access control，MAC)层，与用于组播业务的配置信息包括组播业务的第一指示信息相比，终端设备可以更早地识别出用于组播业务的配置信息，可以减少不必要的处理过程，从而可以降低终端设备的功耗。在使用第一RNTI成功解扰包括配置信息的第一数据包或调度配置信息的DCI的情况下，终端设备可以确定配置信息用于组播业务，由于配置信息中不需要专门的信息来指示配置信息用于组播业务，因此，可以减少配置信息的数据量，从而可以节约传输资源；进一步地，使用RNTI解扰信息是在物理层进行的，因此，与用于组播业务的配置信息承载于第一LCH相比，终端设备可以更早地识别出用于组播业务的配置信息，可以减少不必要的处理过程，从而可以降低终端设备的功耗。
作为一种可能的实施方式，该通信方法还可以包括：在该配置信息用于广播业务的情况下，终端设备可以根据该配置信息接收广播业务。
本申请实施例中，通过一个多播广播业务控制信道即可以传输用于组播业务的配置信息，也可以传输用于广播业务的配置信息，可以提高多播广播业务控制信道的利用率。此外，终端设备仅需要监听一个多播广播业务控制信道，可以减少终端设备监听多播广播业务控制信道的数量，从而可以降低终端设备的功耗。
作为一种可能的实施方式，该通信方法还可以包括：在该配置信息包括广播业务的第二指示信息的情况下，终端设备可以确定该配置信息用于广播业务；和/或在该配置信息承载于第二LCH的情况下，终端设备可以确定该配置信息用于广播业务，第二LCH对应广播业务，第一LCH与第二LCH不同；和/或在使用第二RNTI成功解扰第二数据包或DCI的情况下，终端设备可以确定该配置信息用于广播业务，第二数据包可以包括该配置信息，该DCI用于调度该配置信息，第二RNTI对应广播业务，第一RNTI与第二RNTI不同。
本申请实施例中，终端设备可以准确地识别出用于组播业务或广播业务的配置信息，进而可以进行相应地处理，从而可以提高业务接收的准确性。
作为一种可能的实施方式，该通信方法还可以包括：终端设备接收DCI，该DCI可以包括第三指示信息，第三指示信息指示用于组播业务的配置信息是否发生变化。
本申请实施例中，终端设备可以接收到指示用于组播业务的配置信息是否发生变化的指示信息，在根据指示信息确定用于组播业务的配置信息不发生变化的情况下，不需要监听多播广播业务控制信道，仅在根据指示信息确定用于组播业务的配置信息发生变化的情况下，才需要监听多播广播业务控制信道，可以减少不必要的监听，从而可以降低终端设备的功耗。
作为一种可能的实施方式，该DCI使用第一RNTI加扰。
本申请实施例中，终端设备可以使用组播业务对应的RNTI成功解扰得到指示用于组播业务的配置信息是否发生变化的DCI，进而可以根据该DCI确定组播业务是否发生变化，可以准确地确定DCI指示的业务类型，从而可以提高DCI指示的准确性。
作为一种可能的实施方式，该DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的配置信息是否发生变化。
本申请实施例中，在现有的用于指示用于广播业务的配置信息是否发生变化的DCI中，可以附加指示用于组播业务的配置信息是否发生变化的功能，可以提高DCI的利用率以及兼容性。
作为一种可能的实施方式，该配置信息可以包括临时多播组标识(temporary multicast group identifier，TMGI)、组无线网络临时标识(group radio network temporary identifier，G-RNTI)、非连续接收(discontinuous reception，DRX)配置、MRB配置或物理下行共享信道(physical downlink share channel，PDSCH)配置中的至少一种。
作为一种可能的实施方式，该通信方法还可以包括：终端设备接收系统消息，该系统消息可以包括第五指示信息，第五指示信息用于指示提供RRC非连接态的组播业务。
本申请实施例中，在接入网设备提供RRC非连接态的组播业务的情况下，终端设备可以接收到提供非连接态的组播业务的指示信息，以便可以根据指示信息确定是否监听多播广播业务控制信道，可以减少终端设备的不必要的监听，从而可以降低终端设备的功耗。
第二方面，本申请公开一种通信方法，该通信方法可以应用于接入网设备，也可以应用于接入网设备中的模块(例如，芯片)，还可以应用于能实现全部或部分接入网设备功能的逻辑模块或软件。下面以执行主体是接入网设备为例进行描述。该通信方法可以包括：接入网设备通过多播广播业务控制信道发送配置信息，该配置信息用于组播业务或广播业务；在该配置信息用于组播业务的情况下，根据该配置信息向终端设备发送组播业务，该终端设备处于RRC非连接态。其中，RRC非连接态可以为RRC空闲态，也可以为RRC去激活态。
本申请实施例中，接入网设备可以通过多播广播业务控制信道向终端设备发送用于组播业务的配置信息，即可以在RRC非连接态传输用于组播业务的配置信息，以便终端设备可以 根据用于组播业务的配置信息在RRC非连接态接收组播业务。可见，终端设备在整个组播业务的传输过程中不需要进入RRC连接态，因此，接入网设备不需要通过专用信令向接收组播业务的每个终端设备分别发送相同的用于组播业务的配置信息，仅需要通过多播广播业务控制信道一次性向多个终端设备发送用于组播业务的配置信息即可，可以减少信息的传输数量，从而可以节省信令开销和传输资源。此外，由于终端设备在整个组播业务的传输过程中不需要进入RRC连接态，可以减少使用接入资源的终端设备，从而可以节约接入资源，同时可以避免由于终端设备进入RRC连接态造成网络阻塞或加重阻塞程度。进一步地，由于终端设备在整个组播业务的传输过程中不需要进入RRC连接态，不需要在RRC连接态与RRC非连接态之间进行切换，可以减少组播业务的传输时间，从而可以提高组播业务的传输效率。进一步地，终端设备进入连接态时带宽可能切换到初始(initial)带宽部分(bandwitch，BWP)，在带宽切换过程中终端设备可能无法接收组播业务造成丢包，由于终端设备在接收整个组播业务的过程中不需要进入RRC连接态，不需要进行带宽切换，因此可以避免带宽切换引起的丢包。
作为一种可能的实施方式，该配置信息可以包括组播业务的第一指示信息；和/或该配置信息承载于第一LCH；和/或第一数据包或DCI由第一RNTI加扰得到，第一LCH对应组播业务，第一RNTI对应组播业务，第一数据包包括该配置信息，该DCI用于调度该配置信息。
本申请实施例中，接入网设备通过多播广播业务控制信道向终端设备发送用于组播业务的配置信息之后，终端设备可以在RRC非连接态能够准确地区分出来用于组播业务的配置信息，因此，可以提高在RRC非连接态接收组播业务的准确性。在配置信息用于组播业务的情况下，配置信息包括组播业务的第一指示信息，用于组播业务的配置信息与现有的用于广播业务的配置信息相比改动较少，从而可以提高与现有协议或技术之间的兼容性。在配置信息用于组播业务的情况下，配置信息承载于第一LCH，由于配置信息中不需要专门的信息来指示配置信息用于组播业务，因此，可以减少配置信息的数据量，从而可以节约传输资源；进一步地，LCH位于MAC层，与用于组播业务的配置信息包括组播业务的第一指示信息相比，终端设备可以更早地识别出用于组播业务的配置信息，可以减少不必要的处理过程，从而可以降低终端设备的功耗。在配置信息用于组播业务的情况下，使用第一RNTI加扰包括配置信息的第一数据包或调度配置信息的DCI，由于配置信息中不需要专门的信息来指示配置信息用于组播业务，因此，可以减少配置信息的数据量，从而可以节约传输资源；进一步地，使用RNTI解扰信息是在物理层进行的，因此，与用于组播业务的配置信息承载于第一LCH相比，终端设备可以更早地识别出用于组播业务的配置信息，可以减少不必要的处理过程，从而可以降低终端设备的功耗。
作为一种可能的实施方式，该通信方法还可以包括：在该配置信息用于广播业务的情况下，接入网设备可以根据该配置信息向终端设备发送广播业务。
本申请实施例中，通过一个多播广播业务控制信道即可以传输用于组播业务的配置信息，也可以传输用于广播业务的配置信息，可以提高多播广播业务控制信道的利用率。此外，终端设备仅需要监听一个多播广播业务控制信道，可以减少终端设备监听多播广播业务控制信道的数量，从而可以降低终端设备的功耗。
作为一种可能的实施方式，该配置信息可以包括广播业务的第二指示信息；和/或该配置信息承载于第二LCH；和/或第二数据包或DCI由第二RNTI加扰得到，第二LCH对应广播业务，第二RNTI对应广播业务，第一LCH与第二LCH不同，第一RNTI与第二RNTI不同，第二数据包包括该配置信息，该DCI用于调度该配置信息。
本申请实施例中，配置信息的作用不同，配置信息对应的业务信息、LCH和RNTI中的至少一种不同，以便终端设备可以根据配置信息对应的业务信息、LCH或RNTI中的至少一种，准确地识别出用于组播业务或广播业务的配置信息，进而可以进行相应地处理，从而可以提高业务接收的准确性。
作为一种可能的实施方式，该通信方法还可以包括：接入网设备发送DCI，该DCI可以包括第三指示信息，第三指示信息指示用于组播业务的配置信息是否发生变化。
本申请实施例中，接入网设备可以通过DCI指示组播业务的配置信息是否发生变化，以便终端设备在根据指示确定用于组播业务的配置信息不发生变化的情况下，不需要监听多播广播业务控制信道，仅在根据指示确定用于组播业务的配置信息发生变化的情况下，才需要监听多播广播业务控制信道，可以减少不必要的监听，从而可以降低终端设备的功耗。
作为一种可能的实施方式，该DCI使用第一RNTI加扰。
本申请实施例中，在DCI指示组播业务的配置信息是否发生变化的情况下，使用组播业务对应的RNTI加扰该DCI，以便终端设备可以使用组播业务对应的RNTI成功解扰该DCI，进而可以根据该DCI确定组播业务是否发生变化，可以准确地确定DCI指示的业务类型，从而可以提高DCI指示的准确性。
作为一种可能的实施方式，该DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的配置信息是否发生变化。
本申请实施例中，在现有的用于指示用于广播业务的配置信息是否发生变化的DCI中，可以附加指示用于组播业务的配置信息是否发生变化的功能，可以提高DCI的利用率以及兼容性。
作为一种可能的实施方式，该配置信息可以包括TMGI、G-RNTI、DRX配置、MRB配置或PDSCH配置中的至少一种。
作为一种可能的实施方式，该通信方法还可以包括：接入网设备发送系统消息，该系统消息可以包括第五指示信息，第五指示信息用于指示提供非连接态的组播业务。
本申请实施例中，接入网设备提供非连接态的组播业务时，可以向终端设备发送提供非连接态的组播业务的指示信息，以便终端设备可以根据指示信息确定是否监听多播广播业务控制信道，可以减少终端设备的不必要的监听，从而可以降低终端设备的功耗。
第三方面，本申请公开一种通信装置，该通信装置可以应用于终端设备，也可以应用于终端设备中的模块(例如，芯片)，还可以应用于能实现全部或部分终端设备功能的逻辑模块或软件。该通信装置可以包括：收发单元，用于通过多播广播业务控制信道接收配置信息，该配置信息用于组播业务或广播业务；处理单元，用于控制该收发单元在该配置信息用于组播业务的情况下，根据该配置信息在RRC非连接态接收组播业务。
作为一种可能的实施方式，该处理单元还用于：在该配置信息包括组播业务的第一指示信息的情况下，确定该配置信息用于组播业务；和/或在该配置信息承载于第一LCH的情况下，确定该配置信息用于组播业务，第一LCH对应组播业务；和/或在使用第一成功解扰第一数据包或DCI的情况下，确定该配置信息用于组播业务，第一数据包可以包括该配置信息，该DCI用于调度该配置信息，第一RNTI对应组播业务。
作为一种可能的实施方式，该处理单元，还用于控制该收发单元在该配置信息用于广播业务的情况下，根据该配置信息接收广播业务。
作为一种可能的实施方式，该处理单元还用于：在该配置信息包括广播业务的第二指示信息的情况下，确定所述配置信息用于广播业务；和/或在该配置信息承载于第二LCH的情 况下，确定该配置信息用于广播业务，第二LCH对应广播业务，第一LCH与第二LCH不同；和/或在使用第二RNTI成功解扰第二数据包或DCI的情况下，确定该配置信息用于广播业务，第二数据包包括该配置信息，该DCI用于调度该配置信息，第二RNTI对应广播业务，第一RNTI与第二RNTI不同。
作为一种可能的实施方式，该收发单元，还用于接收DCI，该DCI可以包括第三指示信息，第三指示信息指示用于组播业务的配置信息是否发生变化。
作为一种可能的实施方式，该DCI使用第一RNTI加扰。
作为一种可能的实施方式，该DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的配置信息是否发生变化。
作为一种可能的实施方式，该配置信息包括TMGI、G-RNTI、DRX配置、MRB配置或PDSCH配置中的至少一种。
作为一种可能的实施方式，该收发单元，还用于接收系统消息，该系统消息可以包括第五指示信息，第五指示信息用于指示提供非连接态的组播业务。
第四方面，本申请公开一种通信装置，该通信装置可以应用于接入网设备，也可以应用于接入网设备中的模块(例如，芯片或处理器)，还可以应用于能实现全部或部分接入网设备功能的逻辑模块或软件。该通信装置可以包括：收发单元，用于通过多播广播业务控制信道发送配置信息，该配置信息用于组播业务或广播业务；处理单元，用于控制该收发单元在该配置信息用于组播业务的情况下，根据该配置信息向终端设备发送组播业务，该终端设备处于RRC非连接态。
作为一种可能的实施方式，该配置信息包括组播业务的第一指示信息；和/或该配置信息承载于第一LCH；和/或第一数据包或DCI由第一RNTI加扰得到，第一LCH对应组播业务，第一RNTI对应组播业务，第一数据包包括该配置信息，该DCI用于调度该配置信息。
作为一种可能的实施方式，该处理单元，还用于控制该收发单元在该配置信息用于广播业务的情况下，根据该配置信息向终端设备发送广播业务。
作为一种可能的实施方式，该配置信息包括广播业务的第二指示信息；和/或该配置信息承载于第二LCH；和/或第二数据包或DCI由第二RNTI加扰得到，第二LCH对应广播业务，第二RNTI对应广播业务，第一LCH与第二LCH不同，第一RNTI与第二RNTI不同，第二数据包包括该配置信息，该DCI用于调度该配置信息。
作为一种可能的实施方式，该收发单元，还用于发送DCI，该DCI可以包括第三指示信息，第三指示信息指示用于组播业务的配置信息是否发生变化。
作为一种可能的实施方式，该DCI使用第一RNTI加扰。
作为一种可能的实施方式，该DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的配置信息是否发生变化。
作为一种可能的实施方式，该配置信息包括TMGI、G-RNTI、DRX配置、MRB配置或PDSCH配置中的至少一种。
作为一种可能的实施方式，该收发单元，还用于发送系统消息，该系统消息可以包括第五指示信息，第五指示信息用于指示提供非连接态的组播业务。
第五方面，本申请公开了一种通信装置，该通信装置可以为上述方法实施例中的终端设备(或接入网设备)，或者为设置在终端设备(或接入网设备)中的芯片或处理器。该通信装置包括处理器，处理器与存储器耦合，存储器用于存储程序或指令，当程序或指令被处理器执行时，使通信装置执行上述方法实施例中由终端设备(或接入网设备)、或终端设备(或 接入网设备)中的芯片或处理器所执行的方法。
第六方面，本申请公开了一种通信装置，该通信装置可以为上述方法实施例中的终端设备(或接入网设备)，或者为设置在终端设备(或接入网设备)中的芯片。该通信装置包括处理器和存储器，存储器用于存储程序或指令，当程序或指令被处理器执行时，使通信装置执行上述方法实施例中由终端设备(或接入网设备)、或终端设备(或接入网设备)中的芯片或处理器所执行的方法。
第七方面，本申请公开了一种通信装置，该通信装置可以为上述方法实施例中的终端设备(或接入网设备)，或者为设置在终端设备(或接入网设备)中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行该计算机程序或指令时，使通信装置执行上述方法实施例中由终端设备(或接入网设备)、或终端设备(或接入网设备)中的芯片所执行的方法。
第八方面，本申请公开了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在处理器上运行时，使得上述各方法被执行。
第九方面，本申请公开了一种芯片系统，该芯片系统包括处理器，用于实现上述各方法中的功能。在一种可能的设计中，该芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十方面，本申请公开了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述各方法。
上述第三方面到第十方面的有益效果与第一方面和第二方面中对应的方法的有益效果类似，详细描述可以参考对应方法的有益效果。
附图说明
图1是本申请实施例公开的一种MBS数据传输的示意图；
图2是本申请实施例公开的一种网络架构示意图；
图3是本申请实施例公开的一种组播业务的传输示意图；
图4是本申请实施例公开的一种广播业务的传输示意图；
图5是本申请实施例公开的一种MBS传输的用户面协议栈结构的示意图；
图6是本申请实施例公开的一种UE接收广播业务的示意图；
图7是本申请实施例公开的一种MCCH发送机制的示意图；
图8是本申请实施例公开的一种通信方法的流程示意图；
图9是本申请实施例公开的一种MAC数据包包括两个第一配置信息的示意图；
图10是本申请实施例公开的一种通信装置的结构示意图；
图11是本申请实施例公开的另一种通信装置的结构示意图；
图12是本申请实施例公开的又一种通信装置的结构示意图。
具体实施方式
本申请实施例公开了一种通信方法及装置，用于节省信令开销和传输资源。下面将结合附图，对本申请实施例中的技术方案进行描述。
为了更好地理解本申请实施例，下面先对本申请实施例的网络架构进行描述。请参阅图 2，图2是本申请实施例公开的一种网络架构示意图。如图2所示，该网络架构可以包括终端设备201、接入网设备202、核心网设备203和数据服务器204。
数据服务器，用于向核心网设备发送MBS数据。核心网设备，用于通过MBS会话向接入网设备发送MBS数据。接入网设备，用于通过MRB向终端设备发送MBS数据。终端设备可以通过MRB接收来自接入网设备的MBS数据。
终端设备可以称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是指向用户提供语音和/或数据连通性的设备。终端设备可以为手机(mobile phone)、手持终端、客户终端设备(customer premise equipment，CPE)、笔记本电脑、用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、计算设备、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、带无线收发功能的电脑、无线制解调器(modem)、触觉终端设备、手持设备(handheld)、膝上型电脑(laptop computer)、会话启动协议(session initiation protocol，SIP)电话、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication，MTC)终端，可穿戴设备(如智能手表、智能手环、计步器等)，车载终端设备(如汽车、自行车、电动车、飞机、船舶、火车、高铁等)、扩展现实(extended reality，XR)终端设备、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、智能家居设备(如冰箱、电视、空调、电表等)、智能机器人、车间设备、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、无线数据卡、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，或智慧家庭(smart home)中的无线终端、飞行设备(如智能机器人、热气球、无人机、飞机等)或其他可以接入网络的设备。
此外，终端设备也可以是未来通信系统(例如第六代(6th generation，6G)通信系统等)中的终端设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)中的终端设备等。示例性的，6G网络可以进一步扩展第五代(5th generation，5G)通信终端设备的形态和功能，6G终端设备包括但不限于车、蜂窝网络终端设备(融合卫星终端功能)、无人机、物联网(internet of things，IoT)。
接入网设备为为终端设备提供无线接入的无线接入网(radio access network，RAN)设备或节点，具有无线收发功能，主要负责空口侧的无线资源管理、QoS流管理、数据压缩和加密等功能。接入网设备可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，微微基站、小站、中继站、接入点卫星、气球站等。接入网设备还可以包括长期演进(long term evolution，LTE)中的演进型基站(evolved Node B，eNB或eNodeB)。接入网设备还可以包括5G网络中的下一代基站(next generation Node B，gNB)基站gNB或传输接收点(transmitting and receiving point，TRP)。接入网设备还可以包括第三代合作伙伴(3rd generation partnership project，3GPP)后演进的基站，或者未来演进的PLMN中的基站，宽带网络业务网关(broadband network gateway，BNG)，3GPP汇聚交换机或者非3GPP接入设备、无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)、发射点(transmitting point，TP)、移动交换中心等，还可以是设备到设备(device-to-device，D2D)、车辆外联(vehicle-to-everything，V2X)、机器到机器(machine-to-machine，M2M)通信中承担基站功能的设备等。
核心网设备是指为终端设备提供业务支持的核心网(core network，CN)中的设备，主要负责注册，呼叫的接续、计费，移动性管理，提供用户连接、对用户的管理以及对业务完成 承载，数据的处理和路由等功能。核心接入网设备在不同的通信系统可以对应不同的设备。例如，在第四代(4th generation，4G)通信系统中可以对应移动管理实体(mobility management entity，MME)、服务网关(serving gateway，S-GW)等中的一个或多个。再例如，在5G通信系统中可以对应接入和移动性管理功能(access and mobility management function，AMF)网元、会话管理功能(session management function，SMF)网元、用户面功能(user plane function，UPF)网元等中的一个或多个网元。在下一代通信系统或未来通信系统中可以为为终端设备提供业务支持的一个或多个网元、设备或实体。
数据服务器用于提供MBS数据。
需要说明的是，图2所示的网络架构中不限于仅包括图中所示的终端设备201、接入网设备202、核心网设备203和数据服务器204，还可以包括其它未在图中表示的终端设备、接入网设备、核心网设备和数据服务器，具体本申请在此处不再一一列举。
上述网络架构还可以应用于窄带物联网系统(narrow band-internet of things，NB-IoT)、全球移动通信系统(global system for mobile communications，GSM)、增强型数据速率GSM演进系统(enhanced data rate for GSM evolution，EDGE)、宽带码分多址系统(wideband code division multiple access，WCDMA)、码分多址2000系统(code division multiple access，CDMA2000)、时分同步码分多址系统(time division-synchronization code division multiple access，TD-SCDMA)以及6G等5G之后演进的通信系统。
为了更好地理解本申请实施例，下面先对本申请实施例的相关技术进行描述。
一.组播(multicast)业务
请参阅图3，图3是本申请实施例公开的一种组播业务的传输示意图。如图3所示，组播业务是针对高QoS需求业务设计的，需要针对组播业务进行组管理，可以提供和单播业务相同的或相近的QoS等级。具体地，对于组播业务，核心网需要管理UE的加入和退出。对于核心网与接入网之间的传输依托于协议数据单元(protocol data unit，PDU)会话，并引入新的MBS QoS流。对于接入网，支持PTP和PTM传输方式向UE发送数据，并且支持由接入网控制的PTP和PTM之间的动态切换。组播业务目前只能提供给RRC连接态的UE，需要接入网和核心网维护组播业务组对应的UE相关信息。同时对于组播业务还支持由核心网触发的MBS会话去激活/激活流程用于改变业务状态，UE不感知业务状态。可选地，对于组播业务可以在限定的区域范围内发送数据或者在不同区域发送不同内容，即组播业务为本地组播业务。
二.广播(broadcast)业务
广播业务是针对低QoS需求业务设计的，类似于LTE中的单小区点到多点(single cell point to multipoint，SC-PTM)业务，网络提供的是尽量而为(best effort)的QoS。广播业务支持任何RRC状态的UE。请参阅图4，图4是本申请实施例公开的一种广播业务的传输示意图。如图4所示，核心网和接入网不需要维护接收相关广播业务的UE组，当有业务正在提供时，UE根据配置信息自主进行接收。广播业务的数据传输和组播业务一样是只针对下行(downlink，DL)设计的，与组播业务不同的是广播业务只支持PTM传输方式，对于UE来说广播业务的配置和接收组播业务的配置是完全独立的。对于广播业务要限定在一定的范围内提供业务。可选地，对于一个业务可以在不同的区域范围内提供不同的内容(即本地广播业务)。
三.协议栈
接入网设备与UE进行通信时，接入网设备与UE之间具有相应的协议栈。协议栈可以包括RRC层、业务数据适配协议(service data adaptation protocol,SDAP)层、分组数据汇聚协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、MAC层和物理(physical，PHY)层等。其中，物理层位于最低层(即层一)，MAC层、RLC层、PDCP层以及SDAP层属于第二层(即层二)，RRC层属于第三层(即层三)。
请参阅图5，图5是本申请实施例公开的一种MBS传输的用户面协议栈结构的示意图。如图5所示，对于MBS传输的用户面协议栈来说，PHY位于最底层，MAC层位于PHY层之上，RLC层位于MAC层之上，PDCP层位于RLC层之上。
MBS业务通常为接入网设备向终端设备发送的业务，因此，在传输MBS数据时，MBS数据的传输流程为：
MBS数据先到达接入网设备的PDCP层，经过接入网设备的PDCP层的处理以后传输到接入网设备的RLC层和MAC层，经过相应的处理之后，从接入网设备的物理层发送出去，通过空口传输给UE。UE的各个协议层按照与接入网设备相反的处理顺序对MBS数据依次进行对应的处理。
在接入网设备和UE侧可以形象地将各层对MBS数据的处理结合起来称为无线承载，对于无线承载里的每个数据，都需要经过各个层的处理，每个层都有相应的功能实体来执行相应的功能。例如，PDCP层的PDCP实体。每个无线承载配置里面可以包括一个PDCP实体，同时无线承载配置可以关联一个或多个RLC实体，并且每个RLC实体可以对应一个LCH。
应理解，上面仅是对MBS数据的传输流程的示例性说明，并不对其构成限定。例如，可以跳过上面的某一些层进行传输。
四.广播技术
NR MBS的广播技术中引入了多播广播业务控制信道(MBS control channel，MCCH)和多播业务信道(MBS traffic channel，MTCH)两个逻辑信道。MCCH用于传输控制信息，包括MTCH的配置信息，如MTCH对应的G-RNTI、DRX参数等。MCCH以周期的方式进行发送。MTCH逻辑信道承载广播业务的用户数据。通过MCCH调度MTCH。MTCH的配置为G-RNTI级别，也可说是MBS业务级别。其中，gNB通过G-RNTI来同时向多个UE调度业务数据，每个G-RNTI可以关联至少一个广播业务。
请参阅图6，图6是本申请实施例公开的一种UE接收广播业务的示意图。如图6所示，UE首先获取系统消息，系统消息包括传输广播业务的控制信息，即MCCH的配置信息。MCCH的配置信息包括MCCH的重复周期(repetition period，RP)、偏移量(mcch-Offset)，MCCH传输时间(mcch-duration)和修改周期(modification period，MP)。然后UE根据MCCH的配置信息读取MCCH消息，MCCH消息包括MBS广播配置信息，MBS广播配置信息包括MTCH的配置信息、G-RNTI、TMGI等接受广播业务必要的配置。再然后，UE根据MBS广播配置信息在MTCH上接收广播业务数据。其中，MCCH消息的信元可以如下：

请参阅图7，图7是本申请实施例公开的一种MCCH发送机制的示意图。如图7所示，MCCH在每个MP中重复发送，重复周期为RP。在一个MP中，MCCH的内容一样。当不同MP的MCCH发生变化时，接入网设备向UE发送包括修改通知的物理下行控制信息(physical downlink control channel，PDCCH)，修改通知为MCCH修改通知(change Notification)。当UE在PDCCH上检测到2比特(bit)的MCCH修改通知时，表明检测到修改通知，UE重新获取MCCH。UE可以通过检测MCCH-RNTI加扰的PDCCH获取MCCH的调度信息。其中，MCCH修改通知中的第一比特指示MCCH修改是由于会话开始，MCCH修改通知中的第二比特指示MCCH修改是由于会话修改、会话停止或邻小区列表更新。
五.拓展组播机制到RRC非连接态
由于组播业务支持PTM传输方式，因此，在网络通过PTM传输方式发送数据的情况下，组播技术类似于广播技术，只要UE有相关的PTM接收配置(如G-RNTI等)，UE可以在RRC非连接态接收组播业务。从网络发送数据的角度来说，网络不需要额外再提供一份C-RNTI调度的数据，仍发送为RRC连接态UE用G-RNTI调度的数据，就可以为RRC非连接态UE提供服务，在这种前提下给RRC非连接态UE提供组播业务没有引入特别大的额外开销，因为RRC非连接态UE接收的还是接入网设备发送的同一份数据。
为RRC非连接态UE提供组播业务一种方法为：UE在RRC连接态接收组播业务的PTM配置信息，UE由RRC连接态切换到RRC非连接态，之后使用RRC连接态接收的PTM配置信息在RRC非连接态接收组播业务。
上述方法中，UE想要在RRC非连接态接收组播业务必须先进入RRC连接态获取PTM配置信息。当这些UE进入RRC连接态之后，网络需要通过专用信令为这些UE中的每个UE提供相同的PTM配置信息，以致造成传输资源的浪费。
此外，网络很可能是由于网络拥塞才给RRC非连接态UE提供组播业务，当网络已经处于阻塞状态的情况下，如果有UE想要在RRC非连接态接收业务，那么让这些UE进入到RRC连接态接PTM配置信息，会加重网络的阻塞程度。
进一步地，组播业务的PTM配置信息是允许更新的，接入网设备可以通过RRC专用信令为UE更新PTM配置信息。如果采用上述方法，在网络需要更新PTM配置信息的情况下，网络需要先将RRC非连接态接收组播业务的UE寻呼到连接态，提供更新后的PTM配置信息。如果有大量的UE在RRC非连接态接收组播业务，那么此时的寻呼导致的大量接入对网络来说负担是较大的。
有鉴于此，本申请实施例提供了一种通信方法，用于在非连接态向终端设备发送用于组播业务的配置信息。
为了更好地理解本申请实施例，下面先对本申请实施例的一些概念或名字进行描述。
RRC非连接态
RRC非连接态可以为RRC去激活态或者第三态(RRC_INACTIVE)，也可以为RRC空闲态(RRC_IDLE)。
在NR中，终端设备的RRC状态可以包括RRC连接态(RRC_CONNECTED)、RRC_INACTIVE和RRC_IDLE。当终端设备处于RRC_CONNECTED时，终端设备与接入网设备之间以及接入网设备与核心网设备之间均建立有链路，当有数据到达网络时，网络可以直接将数据传送给终端设备。当终端设备处于RRC_INACTIVE时，接入网设备与核心网设备之间建立了链路，终端设备与接入网设备之间的链路被释放了，虽然终端设备与接入网设备之间的链路被释放了，但是接入网设备存储有终端设备的上下文，当有数据需要传输给终端设备时，接入网设备可以根据终端设备的上下文快速恢复终端设备与接入网设备之间的链路。当终端设备处于RRC_IDLE状态时，在终端设备与接入网设备之间以及接入网设备与核心网设备之间都没有链路，当有数据需要传输时，需要建立终端设备与接入网设备之间以及接入网设备与核心网设备之间的链路。
基于上述网络架构，请参阅图8，图8是本申请实施例公开的一种通信方法的流程示意图。图8中以接入网设备和终端设备作为该交互示意的执行主体为例来示意该方法，但本申请并不限制该交互示意的执行主体。例如，图8中的接入网设备也可以是支持该接入网设备实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分接入网设备功能的逻辑模块或软件；图8中的终端设备也可以是支持该终端设备实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分终端设备功能的逻辑模块或软件。如图8所示，该通信方法可以包括以下步骤。
801.接入网设备通过多播广播业务控制信道发送第一配置信息。
相应地，终端设备通过多播广播业务控制信道接收第一配置信息。
在接入网设备有传输给终端设备的广播业务或者组播业务的情况下，接入网设备可以通过多播广播业务控制信道发送第一配置信息。在有传输给终端设备的广播业务的情况下，第一配置信息用于广播业务。在有传输给终端设备的组播业务的情况下，第一配置信息用于组播业务。多播广播业务控制信道用于为处于RRC非连接态的终端设备传输配置信息。在不同通信系统中，多播广播业务控制信道可以对应不同的名称。例如，在第四代(4th generation，4G)通信系统中，多播广播业务控制信道可以为单小区MCCH(single cell MCCH，SC-MCCH)。再例如，在5G通信系统中，多播广播业务控制信道可以为MCCH。
应理解，本申请中的组播业务可以理解为提供给RRC非连接态的终端设备的组播业务。
一种情况下，在有传输给终端设备的组播业务的情况下，第一配置信息可以包括组播业务的第一指示信息，在有传输给终端设备的广播业务的情况下，第一配置信息可以包括广播业务的第二指示信息。
相应地，在终端设备通过多播广播业务控制信道接收到的第一配置信息包括组播业务的第一指示信息的情况下，终端设备可以确定第一配置信息用于组播业务。在终端设备通过多播广播业务控制信道接收到的第一配置信息包括广播业务的第二指示信息的情况下，终端设备可以确定第一配置信息用于广播业务。
一种实现方式中，接入网设备可以通过第一配置信息中的一个比特、标志位或指示位指示第一配置信息用于组播业务还是广播业务。例如，在第一配置信息用于组播业务的情况下，这个比特、标志位或指示位的值为1，在第一配置信息用于广播业务的情况下，这个比特、标志位或指示位的值为0。再例如，在第一配置信息用于广播业务的情况下，这个比特、标志位或指示位的值为1，在第一配置信息用于组播业务的情况下，这个比特、标志位或指示位的值为0。再例如，在第一配置信息用于组播业务的情况下，第一配置信息中存在这个比 特、标志位或指示位，它的值可以为1或0，在第一配置信息用于广播业务的情况下，第一配置信息中不存在这个比特、标志位或指示位。
另一种实现方式中，接入网设备可以通过某个字段或配置指示第一配置信息用于组播业务还是广播业务。例如，在第一配置信息用于组播业务的情况下，第一配置信息可以包括这个字段或配置；在第一配置信息用于广播业务的情况下，第一配置信息可以不包括这个字段或配置。再例如，在第一配置信息用于广播业务的情况下，第一配置信息可以包括这个字段或配置；在第一配置信息用于组播业务的情况下，第一配置信息可以不包括这个字段或配置。
又一种实现方式中，接入网设备可以通过某个时频资源指示第一配置信息用于组播业务还是广播业务。例如，在第一配置信息用于组播业务的情况下，第一配置信息可以通过这个时频资源传输；在第一配置信息用于广播业务的情况下，第一配置信息可以不通过这个时频资源传输。再例如，在第一配置信息用于广播业务的情况下，第一配置信息可以通过这个时频资源传输；在第一配置信息用于组播业务的情况下，第一配置信息可以不通过这个时频资源传输。
又一种实现方式中，接入网设备可以通过第一配置信息中的两个比特、标志位或指示位指示第一配置信息用于组播业务还是广播业务。其中，一个比特、标志位或指示位用于指示广播业务，另一个比特、标志位或指示位用于指示组播业务。又一种实现方式中，接入网设备可以通过两个字段或配置指示第一配置信息用于组播业务还是广播业务。其中，一个字段或配置用于指示广播业务，另一个字段或配置用于指示组播业务。又一种实现方式中，接入网设备可以通过两个时频资源指示第一配置信息用于组播业务还是广播业务。其中，一个时频资源用于指示广播业务，另一个时频资源用于指示组播业务。
上述是对第一配置信息包括的组播业务的第一指示信息或广播业务的第二指示信息的示例性说明，并不对其构成限定。
组播业务的第一指示信息，可以理解为第一指示信息用于指示组播业务。广播业务的第二指示信息，可以理解为第二指示信息用于指示广播业务。
另一种情况下，在有传输给终端设备的组播业务的情况下，第一配置信息承载于第一LCH；在有传输给终端设备的广播业务的情况下，第一配置信息承载于第二LCH。第一LCH对应组播业务，第二LCH可以对应广播业务，第一LCH与第二LCH不同。
相应地，在第一配置信息承载于第一LCH的情况下，终端设备可以确定第一配置信息用于组播业务，在第一配置信息承载于第二LCH的情况下，终端设备可以确定第一配置信息用于广播业务。
可见，组播业务和广播业务可以对应不同的LCH，即用于承载广播业务和组播业务的第一配置信息的LCH可以不同。而不同LCH的逻辑信道标识(logical channel identifier，LCID)不同，因此，组播业务和广播业务可以对应不同的LCID。
业务类型与LCH的信息之间的对应关系可以是默认配置，即协议规定的。此时，接入网设备不需要向终端设备配置业务类型与LCH的信息之间的对应关系。业务类型可以为组播业务，也可以为广播业务。业务类型与LCH的信息之间的对应关系可以如表1所示：
表1
应理解，表1是对业务类型与LCH的信息之间的对应关系的示例性进行说明，并不对其 构成限定。例如，LCH的信息也可以为其他能够唯一标识LCH的信息。
业务类型与LCH的信息之间的对应关系也可以是接入网设备确定的。此时，接入网设备还可以向终端设备发送第二配置信息。相应地，终端设备还可以接收来自接入网设备的第二配置信息。第二配置信息用于配置业务类型与LCH之间的对应关系。
接入网设备可以通过系统消息向终端设备发送第二配置信息。相应地，终端设备可以通过系统消息接收来自接入网设备的第二配置信息。接入网设备也可以在随机接入过程中向终端设备发送第二配置信息。例如，接入网设备可以在随机接入过程中通过消息(message)2、消息4或消息B向终端设备发送第二配置信息。接入网络设备还可以通过RRC配置向终端设备发送第二配置信息。接入网设备还可以在其他过程中通过其他消息或信令向终端设备发送第二配置信息，例如，MAC信令或DCI，在此不作限定。
在接入网设备有两个第一配置信息需要发送给终端设备，一个第一配置信息用于组播业务，另一个第一配置信息用于广播业务的情况下，从组包的角度来说，接入网设备可以在MAC层将这两个第一配置信息级联或串接在一个传输块(transport block，TB)中进行传输。从调度的角度来说，这两个第一配置信息使用的LCH可以不同，可以在同一个时频资源中向终端设备进行发送，终端设备可以根据MAC包子头中的LCH信息确定第一配置信息用于组播业务或广播业务。请参阅图9，图9是本申请实施例公开的一种MAC数据包包括两个第一配置信息的示意图。如图9所示，MAC数据包的包头包括两个LCH的标识，即LCID1和LCID2，LCID1和LCID2可以分别对应广播业务和组播业务。在终端设备需要接收用于组播业务的第一配置信息的情况下，终端设备可以读取LCID2对应的MAC子(sub)PDU。在终端设备需要接收用于广播业务的第一配置信息的情况下，终端设备可以读取LCID1对应的MAC子PDU。在终端设备需要接收用于组播业务的第一配置信息和用于广播业务的第一配置信息的情况下，终端设备可以读取LCID1和LCID2对应的MAC子PDU。
又一种情况下，接入网设备可以使用第一RNTI加扰用于组播业务的第一配置信息，可以使用第二RNTI加扰用于广播业务的第一配置信息。相应地，终端设备可以使用第一RNTI解扰得到用于组播业务的第一配置信息，可以使用第二RNTI解扰得到用于广播业务的第一配置信息。其中，第一RNTI对应组播业务，第二RNTI对应广播业务，第一RNTI与第二RNTI不同。
一种实现方式中，在有传输给终端设备的组播业务的情况下，第一数据包由第一RNTI加扰得到；在有传输给终端设备的广播业务的情况下，第二数据包由第二RNTI加扰得到。第一数据包包括第一配置信息，第二数据包包括第一配置信息。
相应地，在使用第一RNTI成功解扰第一数据包的情况下，终端设备可以确定第一配置信息用于组播业务，在使用第二RNTI成功解扰第二数据包的情况下，终端设备可以确定第一配置信息用于广播业务。
另一种实现方式中，在有传输给终端设备的组播业务的情况下，第一DCI由第一RNTI加扰得到；在有传输给终端设备的广播业务的情况下，第一DCI由第二RNTI加扰得到。第一DCI用于调度第一配置信息。
相应地，在使用第一RNTI成功解扰第一DCI的情况下，终端设备可以确定第一配置信息用于组播业务，在使用第二RNTI成功解扰第一DCI的情况下，终端设备可以确定第一配置信息用于广播业务。
可见，组播业务和广播业务可以对应不同的RNTI。
业务类型与RNTI的信息之间的对应关系可以是默认配置，即协议规定的。此时，接入 网设备不需要向终端设备配置业务类型与RNTI的信息之间的对应关系。业务类型与RNTI的信息之间的对应关系可以如表2所示：
表2
应理解，表2是对业务类型与RNTI的信息之间的对应关系的示例性进行说明，并不对其构成限定。例如，RNTI的信息也可以为其他能够唯一标识RNTI的信息。
业务类型与RNTI的信息之间的对应关系也可以是接入网设备确定的。此时，接入网设备还可以向终端设备发送第三配置信息。相应地，终端设备还可以接收来自接入网设备的第三配置信息。第三配置信息用于配置业务类型与RNTI的信息之间的对应关系。
接入网设备可以通过系统消息向终端设备发送第三配置信息。接入网设备也可以在随机接入过程中向终端设备发送第三配置信息。例如，接入网设备可以在随机接入过程中通过消息(message)2、消息4或消息B向终端设备发送第三配置信息。接入网络设备还可以通过RRC配置向终端设备发送第三配置信息。接入网设备还可以在其他过程中通过其他消息或信令向终端设备发送第三配置信息，在此不作限定。
在接入网设备有两个第一配置信息需要发送给终端设备，一个第一配置信息用于组播业务，另一个第一配置信息用于广播业务的情况下，从组包的角度来说，接入网设备无法将这两个第一配置信息组到同一个MAC数据包。从调度的角度来说，这两个第一配置信息可以使用不同的RNTI进行加扰。例如，用于广播业务的第一配置信息可以使用现有的广播业务的RNTI进行加扰，用于组播业务的第一配置信息可以使用其他的RNTI进行加扰。可见，同一个数据包只能包括用于组播业务的第一配置信息，或用于广播业务的第一配置信息，但同一个数据包中可以包括多个用于组播业务的第一配置信息，或者多个用于广播业务的第一配置信息。
接入网设备也可以通过上述三种情况的组合来向终端设备指示第一配置信息的作用。组合时，在采用RNTI区分用于组播业务或广播业务的第一配置信息的情况下，接入网设备不能将用于广播业务的第一配置信息和用于组播业务的第一配置信息组包到同一个TB中。在不采用RNTI区分用于组播业务的第一配置信息和用于广播业务的第一配置信息的情况下，接入网设备可以将用于广播业务的第一配置信息和用于组播业务的第一配置信息组包到同一个TB中，也可以不将用于广播业务的第一配置信息和用于组播业务的第一配置信息组包到同一个TB中，在此不作限定。
第一配置信息可以包括TMGI、G-RNTI、DRX配置、MRB配置或PDSCH配置中的至少一种。
其中，TMGI用于标识组播业务或广播业务。G-RNTI用于标识业务数据的动态调度。DRX配置用于终端设备获取非连续接收的配置，可以避免终端设备时刻监听控制信道，从而可以降低终端设备的功耗。PDSCH配置用于终端设备获取接收多播配置信息或业务信息的PDSCH配置。
802.在第一配置信息用于组播业务的情况下，接入网设备根据第一配置信息向处于RRC非连接态的终端设备发送组播业务。
相应地，在第一配置信息用于组播业务的情况下，终端设备根据第一配置信息在RRC非连接态接收组播业务。
接入网设备通过多播广播业务控制信道发送用于组播业务的第一配置信息之后，可以根据第一配置信息向处于RRC非连接态的终端设备发送组播业务。接入网设备向处于RRC非连接态的终端设备发送组播业务，相应地，终端设备可以在RRC非连接态接收来自接入网设备的组播业务。其中，组播业务可以通过MTCH或者其他信道传输。
此处在RRC非连接态接收组播业务的终端设备可以是处于接入网设备覆盖范围内的所有处于RRC非连接态的终端设备，也可以是处于接入网设备覆盖范围内的处于RRC非连接态的终端设备中的部分终端设备。这部分终端设备可以为对组播业务感兴趣的终端设备，也可以为需要或想接收组播业务的终端设备，还可以为希望接收组播业务的终端设备，还可以为期望接收组播业务的终端设备，还可以为计划接收组播业务的终端设备。
803.在第一配置信息用于广播业务的情况下，接入网设备根据第一配置信息向终端设备发送广播业务。
相应地，在第一配置信息用于广播业务的情况下，终端设备根据第一配置信息接收广播业务。
接入网设备通过多播广播业务控制信道发送用于广播业务的第一配置信息之后，可以根据第一配置信息向终端设备发送广播业务。接入网设备可以通过MTCH向终端设备发送广播业务，相应地，终端设备可以通过MTCH接收来自接入网设备的广播业务。
此处在RRC非连接态接收广播业务的终端设备可以是处于接入网设备覆盖范围内的所有处于RRC非连接态的终端设备，也可以是处于接入网设备覆盖范围内的处于RRC非连接态的终端设备中的部分终端设备。这部分终端设备可以为对广播业务感兴趣的终端设备，也可以为需要或想接收广播业务的终端设备，还可以为希望接收广播业务的终端设备，还可以为期望接收广播业务的终端设备，还可以为计划接收广播业务的终端设备。
为了实现第一配置信息用于广播业务或组播业务，可以对上述MCCH消息的信元进行修改，修改后的多播广播业务控制信道消息的信元可以如下：
可见，MCCH上传输的MCCH消息(message)为选择(choice)类型，可以用于配置广播业务，也可以用于配置组播业务。
可选地，接入网设备还可以向终端设备发送修改通知。修改通知可以指示用于组播业务的第一配置信息和/或广播业务的第一配置信息是否发生变化。接入网设备可以周期性地向终端设备发送修改通知，也可以在事件触发的情况下向终端设备发送修改通知。例如，在接入网设备接收到来自终端设备的用于询问用于组播业务的第一配置信息和/或广播业务的第一配置信息是否发生变化的请求的情况下，接入网设备可以向终端设备发送修改通知。
接入网设备可以发送第一DCI。相应地，终端设备还可以接收第一DCI。第一DCI可以 包括第三指示信息，第三指示信息指示用于组播业务的第一配置信息是否发生变化。在组播业务的第一配置信息发生变化的情况下，第三指示信息可以指示用于组播业务的第一配置信息发生变化。在组播业务的第一配置信息未发生变化的情况下，第三指示信息可以指示用于组播业务的第一配置信息没有发生变化。
一种实现方式下，第一DCI可以通过2比特指示用于组播业务的第一配置信息是否发生变化，该2比特的详细描述可以参考上面修改通知的2比特的描述，在此不再赘述。
另一种实现方式下，第一DCI可以通过1比特指示用于组播业务的第一配置信息是否发生变化。
又一种实现方式下，第一DCI可以通过至少3比特指示用于组播业务的第一配置信息是否发生变化。
一种情况下，接入网设备还可以发送第二DCI。相应地，终端设备还可以接收第二DCI。第二DCI可以包括第四指示信息，第四指示信息指示用于广播业务的第一配置信息是否发生变化。在广播业务的第一配置信息发生变化的情况下，第四指示信息可以指示用于广播业务的第一配置信息发生变化。在广播业务的第一配置信息未发生变化的情况下，第四指示信息可以指示用于广播业务的第一配置信息没有发生变化。
在组播业务和广播业务对应不同RNTI的情况下，指示用于组播业务的第一配置信息是否发生变化的指示信息，与指示用于广播业务的第一配置信息是否发生变化的指示信息可以使用不同的RNTI加扰。此时，第一DCI可以使用第一RNTI加扰。终端设备使用第一RNTI解扰得到第一DCI。第二DCI可以使用第二RNTI加扰。终端设备使用第二RNTI解扰得到第二DCI。
一种实现方式下，第二DCI可以通过2比特指示用于广播业务的第一配置信息是否发生变化，该2比特的详细描述可以参考上面修改通知的2比特的描述，在此不再赘述。
在通过2bit指示用于组播业务或广播业务的第一配置信息是否发生变化的情况下，接收广播业务的终端设备和接收组播业务的终端设备监听的是相同的2bit。在通过1bit指示用于组播业务的第一配置信息是否发生变化，通过2bit指示用于广播业务的第一配置信息是否发生变化的情况下，接收广播业务的终端设备监听的是2bit，接收组播业务的终端设备监听的是2bit中的1bit。这1bit可以是2bit中的第1bit，也可以是2bit中的第2bit，此时另外1bit可以用于指示组播业务的其他信息。
另一种情况下，在组播业务和广播业务对应不同LCH，或者组播业务对应第一指示信息和广播业务对应第二指示信息的情况下，第一DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的第一配置信息是否发生变化。在广播业务的第一配置信息发生变化的情况下，第四指示信息指示用于广播业务的第一配置信息发生变化。在广播业务的第一配置信息未发生变化的情况下，第四指示信息指示用于广播业务的第一配置信息没有发生变化。
一种实现方式中，第一DCI可以通过4比特指示用于广播业务和广播业务的配置信息是否发生变化。4比特中的2比特用于指示广播业务的第一配置信息是否发生变化，剩余的2比特用于指示组播业务的第一配置信息是否发生变化。
另一实现方式中，第一DCI可以通过3比特指示用于组播业务和广播业务的配置信息是否发生变化。这3比特中的2比特用于指示组播业务的第一配置信息是否发生变化，剩余的1比特用于指示广播业务的第一配置信息是否发生变化。
又一实现方式中，第一DCI可以通过2比特指示用于组播业务和广播业务的配置信息是否发生变化。这2比特中的1比特用于指示组播业务的第一配置信息是否发生变化，剩余的1 比特用于指示广播业务的第一配置信息是否发生变化。
又一实现方式中，第一DCI可以通过至少5比特指示用于组播业务和广播业务的配置信息是否发生变化。例如，这至少5比特中2比特用于指示广播业务的第一配置信息是否发生变化，剩余至少3比特用于指示组播业务的第一配置信息是否发生变化。
可选地，在接入网设备提供RRC非连接态的组播业务的情况下，接入网设备可以向终端设备发送第五指示信息。相应地，终端设备可以接收来自接入网设备的第五指示信息。第五指示信息可以指示接入网设备提供RRC非连接态的组播业务，也可以指示接入网设备正在提供RRC非连接态的组播业务，还可以指示接入网设备支持提供RRC非连接态的组播业务，还可以指示接入网设备能够提供RRC非连接态的组播业务，还可以指示接入网设备的某个小区提供RRC非连接态的组播业务，还可以指示接入网设备的某个小区正在提供RRC非连接态的组播业务，还可以指示接入网设备的某个小区支持提供RRC非连接态的组播业务，还可以指示接入网设备的某个小区能够提供RRC非连接态的组播业务。第五指示信息可以携带在系统消息中，也可以携带在随机接入过程中的消息2、消息4或消息B中，还可以携带在寻呼消息中，还可以携带在RRC释放消息中，还可以携带在其他消息或信令中，在此不作限定。
第五指示信息可以是小区级别的指示信息，可以仅指示小区提供RRC非连接态的组播业务，而不指示具体提供哪些RRC非连接态的组播业务。
第五指示信息也可以是业务组级别的指示信息，可以指示小区提供的具体组播业务组。可以通过G-RNTI、业务区域标识(service area identity)、频率选择标识(frequency selection identity)、TMGI、MBS会话标识、或网络协议(internet protocol，IP)多播地址等指示组播业务组。
第五指示信息也可以是业务级别的指示信息，可以指示小区提供的具体组播业务。
终端设备接收到来自接入网设备的第五指示信息之后，在终端设备需要接收RRC非连接态的组播业务的情况下，可以监听多播广播业务控制信道。在终端设备不需要接收RRC非连接态的组播业务的情况下，终端设备可以不监听多播广播业务控制信道。可见，在终端设备接收到接入网设备提供RRC非连接态的组播业务的指示信息的情况下，终端设备可以根据需要监听多播广播业务控制信道，可以减少不必要的监听，从而可以降低终端设备的功耗。
基于上述网络架构，请参阅图10，图10是本申请实施例公开的一种通信装置的结构示意图。如图10所示，该通信装置可以包括收发单元1001和处理单元1002。
一种情况下，该通信装置可以是终端设备，也可以是支持该终端设备实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分终端设备功能的逻辑模块或软件。其中：
收发单元1001，用于通过多播广播业务控制信道接收配置信息，该配置信息用于组播业务或广播业务；
处理单元1002，用于控制该收发单元1001在该配置信息用于组播业务的情况下，根据该配置信息在RRC非连接态接收组播业务。
作为一种可能的实施方式，该处理单元1002还用于：
在该配置信息包括组播业务的第一指示信息的情况下，确定该配置信息用于组播业务；和/或
在该配置信息承载于第一LCH的情况下，确定该配置信息用于组播业务，第一LCH对应组播业务；和/或
在使用第一成功解扰第一数据包或DCI的情况下，确定该配置信息用于组播业务，第一数据包可以包括该配置信息，该DCI用于调度该配置信息，第一RNTI对应组播业务。
作为一种可能的实施方式，该处理单元1002，还用于控制该收发单元1001在该配置信息用于广播业务的情况下，根据该配置信息接收广播业务。
作为一种可能的实施方式，该处理单元1002还用于：
在该配置信息包括广播业务的第二指示信息的情况下，确定所述配置信息用于广播业务；和/或
在该配置信息承载于第二LCH的情况下，确定该配置信息用于广播业务，第二LCH对应广播业务，第一LCH与第二LCH不同；和/或
在使用第二RNTI成功解扰第二数据包或DCI的情况下，确定该配置信息用于广播业务，第二数据包包括该配置信息，第二RNTI对应广播业务，第一RNTI与第二RNTI不同，该DCI用于调度该配置信息。
作为一种可能的实施方式，该收发单元1001，还用于接收DCI，该DCI可以包括第三指示信息，第三指示信息指示用于组播业务的配置信息是否发生变化。
作为一种可能的实施方式，该DCI使用第一RNTI加扰。
作为一种可能的实施方式，该DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的配置信息是否发生变化。
作为一种可能的实施方式，该配置信息包括TMGI、G-RNTI、DRX配置、MRB配置或PDSCH配置中的至少一种。
作为一种可能的实施方式，该收发单元1001，还用于接收系统消息，该系统消息可以包括第五指示信息，第五指示信息用于指示提供非连接态的组播业务。
有关上述收发单元1001和处理单元1002更详细的描述可以直接参考上述图8所示的方法实施例中终端设备的相关描述直接得到，这里不加赘述。
另一种情况下，该通信装置可以是接入网设备，也可以是支持该接入网设备实现该方法的芯片、芯片系统、或处理器，还可以是能实现全部或部分接入网设备功能的逻辑模块或软件。其中：
收发单元1001，用于通过多播广播业务控制信道发送配置信息，该配置信息用于组播业务或广播业务；
处理单元1002，用于控制该收发单元1001在该配置信息用于组播业务的情况下，根据该配置信息向终端设备发送组播业务，该终端设备处于RRC非连接态。
作为一种可能的实施方式，该配置信息包括组播业务的第一指示信息；和/或该配置信息承载于第一LCH；和/或第一数据包或DCI由第一RNTI加扰得到，第一LCH对应组播业务，第一RNTI对应组播业务，第一数据包包括该配置信息，该DCI用于调度该配置信息。
作为一种可能的实施方式，该处理单元1002，还用于控制该收发单元1001在该配置信息用于广播业务的情况下，根据该配置信息向终端设备发送广播业务。
作为一种可能的实施方式，该配置信息包括广播业务的第二指示信息；和/或该配置信息承载于第二LCH；和/或第二数据包或DCI由第二RNTI加扰得到，第二LCH对应广播业务，第二RNTI对应广播业务，第一LCH与第二LCH不同，第一RNTI与第二RNTI不同，第二数据包包括该配置信息，该DCI用于调度该配置信息。
作为一种可能的实施方式，该收发单元1001，还用于发送DCI，该DCI可以包括第三指示信息，第三指示信息指示用于组播业务的配置信息是否发生变化。
作为一种可能的实施方式，该DCI使用第一RNTI加扰。
作为一种可能的实施方式，该DCI还可以包括第四指示信息，第四指示信息指示用于广播业务的配置信息是否发生变化。
作为一种可能的实施方式，该配置信息包括TMGI、G-RNTI、DRX配置、MRB配置或PDSCH配置中的至少一种。
作为一种可能的实施方式，该收发单元1001，还用于发送系统消息，该系统消息可以包括第五指示信息，第五指示信息用于指示提供非连接态的组播业务。
有关上述收发单元1001和处理单元1002更详细的描述可以直接参考上述图8所示的方法实施例中接入网设备的相关描述直接得到，这里不加赘述。
基于上述网络架构，请参阅图11，图11是本申请实施例公开的另一种通信装置的结构示意图。如图11所示，该通信装置可以包括处理器1101、存储器1102、收发器1103和总线1104。存储器1102可以是独立存在的，可以通过总线1104与处理器1101相连接。存储器1102也可以和处理器1101集成在一起。其中，总线1104用于实现这些组件之间的连接。在一种情况下，如图11所示，收发器1103可以包括发射机11031、接收机11032和天线11033。在另一种情况下，收发器1103可以包括发射器(即输出接口)和接收器(即输入接口)。发射器可以包括发射机和天线，接收器可以包括接收机和天线。
该通信装置可以为接入网设备，也可以为接入网设备中的模块。存储器1102中存储的计算机程序指令被执行时，该处理器1101用于执行上述实施例中处理单元1002执行的操作，收发器1103用于执行上述实施例中收发单元1001执行的操作。上述通信装置还可以用于执行上述图8方法实施例中接入网设备执行的各种方法，不再赘述。
该通信装置可以为终端设备，也可以为终端设备中的模块。存储器1102中存储的计算机程序指令被执行时，该处理器1101用于执行上述实施例中处理单元1002执行的操作，收发器1103用于执行上述实施例中收发单元1001执行的操作。上述通信装置还可以用于执行上述图8方法实施例中终端设备执行的各种方法，不再赘述。
基于上述网络架构，请参阅图12，图12是本申请实施例公开的又一种通信装置的结构示意图。如图12所示，该通信装置可以包括输入接口1201、逻辑电路1202和输出接口1203。输入接口1201与输出接口1203通过逻辑电路1202相连接。其中，输入接口1201用于接收来自其它通信装置的信息，输出接口1203用于向其它通信装置输出、调度或者发送信息。逻辑电路1202用于执行除输入接口1201与输出接口1203的操作之外的操作，例如实现上述实施例中处理器1101实现的功能。其中，该通信装置可以为终端设备(或终端设备内的模块)，也可以为接入网设备(或接入网设备内的模块)。其中，有关输入接口1201、逻辑电路1202和输出接口1203更详细的描述可以直接参考上述方法实施例中终端设备或接入网设备的相关描述直接得到，这里不加赘述。
应理解，上述各个模块可以是独立的，也可以集成在一起的。例如，发射机、接收机和天线可以是独立的，也可以集成为收发器。再例如，输入接口与输出接口可以是独立的，也可以集成为通信接口。
本申请实施例还公开一种计算机可读存储介质，其上存储有指令，该指令被执行时执行上述方法实施例中的方法。
本申请实施例还公开一种包括计算机指令的计算机程序产品，该计算机指令被执行时执行上述方法实施例中的方法。
本申请实施例还公开一种通信系统，该通信系统可以包括集中控制器、路由计算器和路由执行器，具体描述可以参考上述所示的通信方法。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。
显然，以上所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或者特性可以包含在本实施例申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是相同的实施例，也不是与其它实施例互斥的独立的或是备选的实施例。本领域技术人员可以显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书及所述附图中术语“第一”、“第二”、“第三”等是区别于不同的对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如，包含了一系列步骤或单元，或者可选地，还包括没有列出的步骤或单元，或者可选地还包括这些过程、方法、产品或设备固有的其它步骤或单元。
附图中仅示出了与本申请相关的部分而非全部内容。在更加详细地讨论示例性实施例之前，应当提到的是，一些示例性实施例被描述成作为流程图描绘的处理或方法。虽然流程图将各项操作(或步骤)描述成顺序的处理，但是其中的许多操作可以并行地、并发地或者同时实施。此外，各项操作的顺序可以被重新安排。当其操作完成时所述处理可以被终止，但是还可以具有未包括在附图中的附加步骤。
在本说明书中使用的术语“单元”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件或执行中的软件。例如，单元可以是但不限于在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或分布在两个或多个计算机之间。此外，这些单元可从在上面存储有各种数据结构的各种计算机可读介质执行。单元可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一单元交互的第二单元数据。例如，通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
另外，本申请实施例中，对于名词的数目，除非特别说明，表示“单数名词或复数名词”，即"一个或多个”。“至少一个”是指一个或者多个，“多个”是指两个或两个以上，“一种或多种”中的“多种”指两种或两种以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。例如，A/B，表示：A或B。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，表示：a,b,c,a和b,a和c,b和c,或a和b和c，其中a,b,c可以是单个，也可以是多个。

Claims (30)

  1. 一种通信方法，其特征在于，包括：
    通过多播广播业务控制信道接收配置信息，所述配置信息用于组播业务或广播业务；
    在所述配置信息用于组播业务的情况下，根据所述配置信息在无线资源控制RRC非连接态接收组播业务。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述配置信息包括组播业务的第一指示信息的情况下，确定所述配置信息用于组播业务；和/或
    在所述配置信息承载于第一逻辑信道LCH的情况下，确定所述配置信息用于组播业务，所述第一LCH对应组播业务；和/或
    在使用第一无线网络临时标识RNTI成功解扰第一数据包或下行控制信息DCI的情况下，确定所述配置信息用于组播业务，所述第一数据包包括所述配置信息，所述DCI用于调度所述配置信息，所述第一RNTI对应组播业务。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    在所述配置信息用于广播业务的情况下，根据所述配置信息接收广播业务。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    在所述配置信息包括广播业务的第二指示信息的情况下，确定所述配置信息用于广播业务；和/或
    在所述配置信息承载于第二LCH的情况下，确定所述配置信息用于广播业务，所述第二LCH对应广播业务，所述第一LCH与所述第二LCH不同；和/或
    在使用第二RNTI成功解扰第二数据包或DCI的情况下，确定所述配置信息用于广播业务，所述第二数据包包括所述配置信息，所述DCI用于调度所述配置信息，所述第二RNTI对应广播业务，所述第一RNTI与所述第二RNTI不同。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述方法还包括：
    接收DCI，所述DCI包括第三指示信息，所述第三指示信息指示用于组播业务的配置信息是否发生变化。
  6. 根据权利要求5所述的方法，其特征在于，所述DCI还包括第四指示信息，所述第四指示信息指示用于广播业务的配置信息是否发生变化。
  7. 一种通信方法，其特征在于，包括：
    通过多播广播业务控制信道发送配置信息，所述配置信息用于组播业务或广播业务；
    在所述配置信息用于组播业务的情况下，根据所述配置信息向终端设备发送组播业务，所述终端设备处于无线资源控制RRC非连接态。
  8. 根据权利要求7所述的方法，其特征在于，所述配置信息包括组播业务的第一指示信息；和/或所述配置信息承载于第一逻辑信道LCH；和/或第一数据包或下行控制信息DCI由第一无线网络临时标识RNTI加扰得到，所述第一LCH对应组播业务，所述第一RNTI对应组播业务，所述第一数据包包括所述配置信息，所述DCI用于调度所述配置信息。
  9. 根据权利要求7或8所述的方法，其特征在于，所述方法还包括：
    在所述配置信息用于广播业务的情况下，根据所述配置信息向终端设备发送广播业务。
  10. 根据权利要求9所述的方法，其特征在于，所述配置信息包括广播业务的第二指示 信息；和/或所述配置信息承载于第二LCH；和/或第二数据包或DCI由第二RNTI加扰得到，所述第二LCH对应广播业务，所述第二RNTI对应广播业务，所述第一LCH与所述第二LCH不同，所述第一RNTI与所述第二RNTI不同，所述第二数据包包括所述配置信息，所述DCI用于调度所述配置信息。
  11. 根据权利要求7-10任一项所述的方法，其特征在于，所述方法还包括：
    发送DCI，所述DCI包括第三指示信息，所述第三指示信息指示用于组播业务的配置信息是否发生变化。
  12. 根据权利要求11所述的方法，其特征在于，所述DCI还包括第四指示信息，所述第四指示信息指示用于广播业务的配置信息是否发生变化。
  13. 根据权利要求5或11所述的方法，其特征在于，所述DCI使用所述第一RNTI加扰。
  14. 一种通信装置，其特征在于，包括收发单元和处理单元：
    所述收发单元，用于通过多播广播业务控制信道接收配置信息，所述配置信息用于组播业务或广播业务；
    所述处理单元，用于控制所述收发单元在所述配置信息用于组播业务的情况下，根据所述配置信息在无线资源控制RRC非连接态接收组播业务。
  15. 根据权利要求14所述的装置，其特征在于，所述处理单元还用于：
    在所述配置信息包括组播业务的第一指示信息的情况下，确定所述配置信息用于组播业务；和/或
    在所述配置信息承载于第一逻辑信道LCH的情况下，确定所述配置信息用于组播业务，所述第一LCH对应组播业务；和/或
    在使用第一无线网络临时标识RNTI成功解扰第一数据包或下行控制信息DCI的情况下，确定所述配置信息用于组播业务，所述第一数据包包括所述配置信息，所述DCI用于调度所述配置信息，所述第一RNTI对应组播业务。
  16. 根据权利要求14或15所述的装置，其特征在于，所述处理单元，还用于控制所述收发单元在所述配置信息用于广播业务的情况下，根据所述配置信息接收广播业务。
  17. 根据权利要求16所述的装置，其特征在于，所述处理单元还用于：
    在所述配置信息包括广播业务的第二指示信息的情况下，确定所述配置信息用于广播业务；和/或
    在所述配置信息承载于第二LCH的情况下，确定所述配置信息用于广播业务，所述第二LCH对应广播业务，所述第一LCH与所述第二LCH不同；和/或
    在使用第二RNTI成功解扰第二数据包或DCI的情况下，确定所述配置信息用于广播业务，所述第二数据包包括所述配置信息，所述DCI用于调度所述配置信息，所述第二RNTI对应广播业务，所述第一RNTI与所述第二RNTI不同。
  18. 根据权利要求14-17任一项所述的装置，其特征在于，所述收发单元，还用于接收下行控制信息DCI，所述DCI包括第三指示信息，所述第三指示信息指示用于组播业务的配置信息是否发生变化。
  19. 根据权利要求18所述的装置，其特征在于，所述DCI还包括第四指示信息，所述第四指示信息指示用于广播业务的配置信息是否发生变化。
  20. 一种通信装置，其特征在于，包括收发单元和处理单元：
    所述收发单元，用于通过多播广播业务控制信道发送配置信息，所述配置信息用于组播业务或广播业务；
    所述处理单元，用于控制所述收发单元在所述配置信息用于组播业务的情况下，根据所述配置信息向终端设备发送组播业务，所述终端设备处于无线资源控制RRC非连接态。
  21. 根据权利要求20所述的装置，其特征在于，所述配置信息包括组播业务的第一指示信息；和/或所述配置信息承载于第一逻辑信道LCH；和/或第一数据包或下行控制信息DCI由第一无线网络临时标识RNTI加扰得到，所述第一LCH对应组播业务，所述第一RNTI对应组播业务，所述第一数据包包括所述配置信息，所述DCI用于调度所述配置信息。
  22. 根据权利要求20或21所述的装置，其特征在于，所述处理单元，还用于控制所述收发单元在所述配置信息用于广播业务的情况下，根据所述配置信息向终端设备发送广播业务。
  23. 根据权利要求22所述的装置，其特征在于，所述配置信息包括广播业务的第二指示信息；和/或所述配置信息承载于第二LCH；和/或第二数据包或DCI由第二RNTI加扰得到，所述第二LCH对应广播业务，所述第二RNTI对应广播业务，所述第一LCH与所述第二LCH不同，所述第一RNTI与所述第二RNTI不同，所述第二数据包包括所述配置信息，所述DCI用于调度所述配置信息。
  24. 根据权利要求20-23任一项所述的装置，其特征在于，所述收发单元，还用于发送下行控制信息DCI，所述DCI包括第三指示信息，所述第三指示信息指示用于组播业务的配置信息是否发生变化。
  25. 根据权利要求24所述的装置，其特征在于，所述DCI还包括第四指示信息，所述第四指示信息指示用于广播业务的配置信息是否发生变化。
  26. 根据权利要求18或24所述的装置，其特征在于，所述DCI使用所述第一RNTI加扰。
  27. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1-6、13任一项所述的方法。
  28. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求7-13任一项所述的方法。
  29. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序或计算机指令，当所述计算机程序或计算机指令被运行时，实现如权利要求1-13任一项所述的方法。
  30. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码被运行时，实现如权利要求1-13任一项所述的方法。
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