WO2021142634A1 - 一种多播业务传输方法及装置 - Google Patents

一种多播业务传输方法及装置 Download PDF

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Publication number
WO2021142634A1
WO2021142634A1 PCT/CN2020/072086 CN2020072086W WO2021142634A1 WO 2021142634 A1 WO2021142634 A1 WO 2021142634A1 CN 2020072086 W CN2020072086 W CN 2020072086W WO 2021142634 A1 WO2021142634 A1 WO 2021142634A1
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WIPO (PCT)
Prior art keywords
multicast service
configuration information
network device
terminal device
cell
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PCT/CN2020/072086
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English (en)
French (fr)
Inventor
陈磊
许斌
李秉肇
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华为技术有限公司
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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
Priority to EP20914278.5A priority Critical patent/EP4072169B1/en
Priority to PCT/CN2020/072086 priority patent/WO2021142634A1/zh
Priority to CN202080091916.6A priority patent/CN114930879B/zh
Publication of WO2021142634A1 publication Critical patent/WO2021142634A1/zh
Priority to US17/863,952 priority patent/US20220345853A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a method and device for multicast service transmission.
  • the 3rd generation partnership project (3GPP) network introduces multimedia broadcast multicast service (MBMS).
  • MBMS multimedia broadcast multicast service
  • a network device can send MBMS to multiple terminal devices on one or more cells, and multiple terminal devices can receive MBMS on the one or more cells. In this way, point-to-multipoint service transmission from one service source to multiple terminal devices is realized.
  • the technology for sending MBMS may include: multicast/broadcast single frequency network (MBSFN) technology, single-cell point-to-multipoint (SC-PTM) technology.
  • MMSFN multicast/broadcast single frequency network
  • SC-PTM single-cell point-to-multipoint
  • the MBMS is associated with a group radio network temporary identifier (G-RNTI).
  • G-RNTI group radio network temporary identifier
  • the terminal equipment in a certain cell needs MBMS the network equipment can use this
  • the G-RNTI corresponding to MBMS scrambles the physical downlink control channel (PDCCH) used to schedule MBMS, and scrambles it on the cell/component carrier (CC) corresponding to the cell
  • the PDCCH is sent to multiple terminal devices.
  • each terminal device can use G-RNTI to detect and receive the PDCCH sent on the cell, and receive MBMS according to the PDCCH.
  • CA carrier aggregation
  • the CA technology can aggregate two or more CCs together, and network devices can send services with the same content through the aggregated multiple CCs.
  • the network device can apply the CA technology to send the scrambled PDCCH to the terminal device through some of the multiple CCs.
  • the terminal device does not Knowing which CCs the network device uses to send the PDCCH, the terminal device needs to use the G-RNTI corresponding to the MBMS to detect the PDCCH on all CCs, and receive the MBMS based on the detected PDCCH. Therefore, the power consumption of the terminal equipment is excessive.
  • the embodiments of the present application provide a multicast service transmission method and device to reduce the power consumption of terminal equipment receiving the multicast service in the CA scenario.
  • an embodiment of the present application provides a multicast service transmission method, the method is applied to a first network device, and the method includes: determining a method for instructing a terminal device to receive a first multicast service, including a first multicast service; The cell identifier of the serving cell corresponding to the service and one or more of the following information: the identifier of the first multicast service, the first configuration information of the radio network temporary identifier (RNTI) corresponding to the first multicast service , Send the first configuration information to the terminal device.
  • RNTI radio network temporary identifier
  • the first network device can determine the configuration information related to the multicast service, such as the RNTI corresponding to the multicast service and/or the identifier of the multicast service, and the service cell corresponding to the first multicast service.
  • Cell identification and notify the terminal device of the configuration information related to the multicast service, so that the terminal device can receive the multicast service through the corresponding RNTI in the designated serving cell according to the configuration information related to the multicast service, without the terminal device in all services
  • the cell applies RNTI blind detection to schedule the PDCCH of the multicast service, and receives the multicast service according to the detected PDCCH, so as to reduce the power consumption of the terminal equipment to receive the multicast service in the CA scenario.
  • the cell identifier is the physical cell identifier (PCI) of the serving cell, or the cell identifier is the number of the serving cell in the serving cell set of the terminal device, or the cell
  • the identifier is the cell global identifier of the serving cell, such as: CGI (cell global identifier) or evolved cell global identifier (ECGI).
  • a serving cell can be identified by PCI or numbering or cell global, which improves the diversity and flexibility of the cell identification of the serving cell.
  • the first configuration information further includes the identification of the transmission resource of the first multicast service.
  • the identification of the transmission resource of the multicast service can be included in the configuration information to notify the terminal device, so that the terminal device can receive the multicast service on the transmission resource indicated by the identification of the transmission resource, that is, in the specific To receive multicast services on transmission resources, there is no need to blindly check multicast services on all transmission resources of the serving cell, which reduces the power consumption of terminal equipment receiving multicast services in the CA scenario.
  • the method further includes: sending to the second network device the identity of the terminal device and the identity of the first multicast service. To indicate that the terminal device needs to receive the first information of the first multicast service.
  • the first network device can notify the second network device of the identification of the terminal device and the identification of the first multicast service, so that the second network device knows that the terminal device needs to receive the first multicast service, and then After determining to send the first multicast service to the terminal device, the second network device configures the configuration information related to the first multicast service to the terminal device through the first network device. In this way, the second network device can send the multicast service to the terminal device without the first network device sending the multicast service to the terminal device, which reduces the pressure of the first network device to send the multicast service.
  • the first information is included in the secondary cell group addition request message.
  • the first network device can include the first information in the secondary cell group addition request message and send it to the second network device, that is, send the first information to the second network device through the existing secondary cell group addition process.
  • Information the first information does not need to be sent to the second network device through new signaling, which reduces signaling overhead.
  • the method further includes: receiving a secondary cell group addition response message including the second configuration information from the second network device, and the second The configuration information includes the identity of the first multicast service, RNTI, and the cell identity of the serving cell corresponding to the first multicast service.
  • the first network device can receive the multicast service configuration information configured by the second network device through the existing secondary cell group addition process, without receiving the configuration sent by the second network device through new signaling. Information, reduce signaling overhead.
  • the method further includes: receiving third configuration information used to update the first configuration information from the second network device, and reporting to the terminal The device sends third configuration information.
  • the first network device can receive the updated configuration information from the second network device and send the updated configuration information to the terminal device so that the terminal device can receive the multicast service according to the updated configuration information
  • the configuration information related to the multicast service is updated in time to ensure the accuracy of the terminal equipment receiving the multicast service.
  • the method further includes: receiving an instruction from the second network device for instructing the second network device to stop sending the first multicast service The first instruction information.
  • the first network device can receive the instruction information from the second network device for instructing to stop sending the first multicast service, so that the first network device knows that the multicast service has stopped sending, and no more reception/detection is required.
  • the multicast service avoids waste of transmission resources and reduces power consumption for detecting the multicast service.
  • the method further includes: sending to the terminal device second indication information for indicating that the first configuration information is invalid.
  • the first network device can send the first configuration information invalid indication information to the terminal device, so that the terminal device determines that the first configuration information is invalid according to the indication information, and does not need to receive the multicast service according to the first configuration information. Avoid waste of transmission resources and reduce the power consumption of terminal equipment to detect multicast services.
  • an embodiment of the present application provides a communication device.
  • the communication device may be a first network device or a chip or a system on a chip in the first network device, and may also be used to implement the first aspect or the first network device in the first network device. Any possible design of the functional module of the method in the first aspect.
  • the communication device can implement the functions performed by the first network device in the first aspect or the possible design of the first aspect, and the functions can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes a processing unit and a sending unit.
  • the processing unit is configured to determine the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information used to instruct the terminal device to receive the first multicast service: the identity of the first multicast service, The first configuration information of the RNTI corresponding to the first multicast service.
  • the sending unit is configured to send the first configuration information to the terminal device.
  • the specific implementation of the communication device may refer to the first aspect or the behavior function of the network device in the multicast service transmission method provided by any possible design of the first aspect.
  • the configuration information related to the multicast service can be determined, such as the RNTI corresponding to the multicast service and/or the identifier of the multicast service and the serving cell corresponding to the first multicast service, and the The configuration information related to the broadcast service is notified to the terminal equipment, so that the terminal equipment can receive the multicast service through the corresponding RNTI on the designated serving cell according to the configuration information related to the multicast service, without the terminal device applying RNTI blind detection on all serving cells. It is used to schedule the PDCCH of the multicast service and receive the multicast service according to the detected PDCCH, thereby reducing the power consumption of the terminal device in detecting and receiving the multicast service in the CA scenario.
  • the cell identity is the PCI of the serving cell, or the cell identity is the number of the serving cell in the serving cell set of the terminal device, or the cell identity is the cell global identity of the serving cell, Such as: CGI or ECGI.
  • the communication device can identify a serving cell through PCI or numbering or cell global, which improves the diversity and flexibility of the cell identification of the serving cell.
  • the first configuration information further includes the identification of the transmission resource of the first multicast service.
  • the communication device can include the identifier of the transmission resource of the multicast service in the configuration information to notify the terminal device, so that the terminal device can receive the multicast service on the transmission resource indicated by the identifier of the transmission resource, that is, The multicast service is received on specific transmission resources, without blind detection on all transmission resources of the serving cell, and the power consumption of the terminal device for receiving the multicast service in the CA scenario is reduced.
  • the sending unit is further configured to send to the second network device the identifier of the terminal device and the identifier of the first multicast service. , The first information used to indicate that the terminal device needs to receive the first multicast service.
  • the communication device can notify the second network device of the identification of the terminal device and the identification of the first multicast service, so that the second network device knows that the terminal device needs to receive the first multicast service, and is 2.
  • the network device configures the configuration information related to the first multicast service to the terminal device through the communication device. In this way, it can be realized that the second network device sends the multicast service to the terminal device without the communication device sending the multicast service to the terminal device, and the pressure of the communication device to send the multicast service is reduced.
  • the first information is included in the secondary cell group addition request message.
  • the communication device can include the first information in the secondary cell group addition request message and send it to the second network device, that is, send the first information to the second network device through the existing secondary cell group addition process , There is no need to send the first information to the second network device through new signaling, which reduces signaling overhead.
  • the method further includes: receiving a secondary cell group addition response message including the second configuration information from the second network device, and the second The configuration information includes the identity of the first multicast service, RNTI, and the cell identity of the serving cell corresponding to the first multicast service.
  • the communication device can receive the configuration information configured by the second network device to send the multicast service through the existing secondary cell group addition process, without receiving the configuration information sent by the second network device through new signaling. , Reduce signaling overhead.
  • the method further includes: receiving third configuration information used to update the first configuration information from the second network device, and reporting to the terminal The device sends third configuration information.
  • the communication device can receive the updated configuration information from the second network device, and send the updated configuration information to the terminal device, so that the terminal device can receive the multicast service according to the updated configuration information,
  • the configuration information related to the multicast service is updated in time to ensure the accuracy of the terminal equipment receiving the multicast service.
  • the method further includes: receiving an instruction from the second network device for instructing the second network device to stop sending the first multicast service The first instruction information.
  • the communication device can receive the instruction information from the second network device for instructing to stop sending the first multicast service, so that the communication device knows that the multicast service stops sending, and does not need to receive/detect the multicast service. Broadcast services, avoid waste of transmission resources and reduce power consumption for detecting multicast services.
  • the method further includes: sending to the terminal device second indication information for indicating that the first configuration information is invalid.
  • the communication device can send the indication information indicating that the first configuration information is invalid to the terminal device, so that the terminal device determines that the first configuration information is invalid according to the indication information, and does not need to receive multicast services according to the first configuration information. Waste transmission resources and reduce power consumption for detecting multicast services.
  • a communication device may be a first network device or a chip or a system on a chip in the first network device.
  • the communication device can implement the functions performed by the first network device in the first aspect or the possible designs of the first aspect, and the functions can be implemented by hardware.
  • the communication device may include: processing And transceiver.
  • the processor is configured to determine the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information used to instruct the terminal device to receive the first multicast service: the identity of the first multicast service, the first The first configuration information of the multicast service, and the first configuration information is sent to the terminal device through the transceiver.
  • the communication device may further include a memory, and the memory is configured to store necessary computer-executable instructions and data of the communication device.
  • the processor executes the computer-executable instructions stored in the memory, so that the communication device executes the multicast service transmission method described in the first aspect or any one of the possible designs of the first aspect.
  • a computer-readable storage medium may be a readable non-volatile storage medium.
  • the computer-readable storage medium stores computer instructions or programs. At the time, the computer is caused to execute the multicast service transmission method described in the first aspect or any one of the possible designs of the foregoing aspects.
  • a computer program product containing instructions which when running on a computer, enables the computer to execute the multicast service transmission method described in the first aspect or any one of the possible designs of the foregoing aspects.
  • a communication device may be a first network device or a chip or a system on a chip in the first network device.
  • the communication device includes one or more processors and one or more memories.
  • the one or more memories are coupled with the one or more processors, and the one or more memories are used to store computer program codes, and the computer program codes include computer instructions.
  • the communication device is caused to execute the foregoing first aspect or any possible designed multicast service transmission method of the first aspect.
  • a chip system in a seventh aspect, includes one or more processors and communication interfaces.
  • the one or more processors and communication interfaces can support the chip system to execute the first aspect or any one of the first aspects. It is possible to design the described multicast service transmission method.
  • the chip system may also include one or more memories, one or more memories are coupled with one or more processors, and one or more memories store computer program codes or computer instructions; when one or more processors When the computer program code or computer instruction is executed, the chip system is caused to execute the multicast service transmission method of the first aspect or any possible design of the first aspect.
  • any design method in the third aspect to the seventh aspect may refer to the technical effect of the first aspect or any possible design in the first aspect, and details are not repeated here.
  • an embodiment of the present application provides a multicast service transmission method.
  • the method is applied to a terminal device.
  • the method includes: receiving an identifier including a first multicast service and a first multicast service from a first network device. Receiving the first multicast service according to the first configuration information of the RNTI corresponding to the broadcast service and the cell identity of the serving cell corresponding to the first multicast service.
  • the terminal device can receive configuration information related to the multicast service, such as: the RNTI corresponding to the multicast service and/or the identifier of the multicast service and the cell identifier of the serving cell corresponding to the first multicast service
  • the multicast service is received through the corresponding RNTI on the designated serving cell, without the need for terminal equipment to apply RNTI blind detection on all serving cells to schedule the PDCCH of the multicast service, and according to the detection
  • the PDCCH receives the multicast service, reducing the power consumption of the terminal device in the CA scenario to detect and receive the multicast service.
  • the cell identity is the PCI of the serving cell, or the cell identity is the number of the serving cell in the serving cell set of the terminal device, or the cell identity is the cell global identity of the serving cell, Such as: CGI or ECGI.
  • a serving cell can be identified by PCI or numbering or cell global, which improves the diversity and flexibility of the cell identification of the serving cell.
  • the first configuration information further includes the identifier of the transmission resource of the first multicast service.
  • the terminal device can receive the configuration information including the identifier of the transmission resource of the multicast service, and receive the multicast service on the transmission resource indicated by the identifier of the transmission resource, that is, on the specific transmission resource. Multicast services, without blindly checking the multicast services on all transmission resources of the serving cell, reducing the power consumption of the terminal equipment receiving the multicast services in the CA scenario.
  • the method further includes: receiving third configuration information used to update the first configuration information from the first network device.
  • the terminal device can receive the updated configuration information from the first network device, and receive the multicast service according to the updated configuration information.
  • the configuration information related to the multicast service is updated in time to ensure the accuracy of the terminal equipment receiving the multicast service.
  • the method further includes: receiving second indication information from the first network device; the second indication information is used to indicate the first configuration Information is invalid.
  • the terminal device can determine that the first configuration information is invalid according to the indication information sent by the first network device to indicate that the first configuration information is invalid, and no longer receive multicast services according to the first configuration information, and avoid transmission Resource waste and reduce power consumption for detecting multicast services.
  • the present application provides a communication device.
  • the communication device may be a terminal device or a chip or a system on a chip in the terminal device, and may also be a terminal device used to implement the eighth aspect or any one of the eighth aspect. Design the functional modules of the described method.
  • the communication device can implement the functions performed by the terminal device in the eighth aspect or the eighth possible design, and the functions can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may include: a receiving unit and a processing unit;
  • the receiving unit is configured to receive the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information from the first network device: the identity of the first multicast service, and the information corresponding to the first multicast service The first configuration information of RNTI;
  • the processing unit is configured to receive the first multicast service through the receiving unit according to the first configuration information.
  • the communication device can receive configuration information related to the multicast service, such as: the RNTI corresponding to the multicast service and/or the identifier of the multicast service and the serving cell corresponding to the first multicast service, According to the configuration information related to the multicast service, the multicast service is received through the corresponding RNTI on the designated serving cell, without the communication device applying RNTI blind detection on all serving cells to schedule the PDCCH of the multicast service, and according to the detection The PDCCH receives the multicast service, which reduces the power consumption of the communication device for detecting and receiving the multicast service in the CA scenario.
  • configuration information related to the multicast service such as: the RNTI corresponding to the multicast service and/or the identifier of the multicast service and the serving cell corresponding to the first multicast service.
  • the cell identity is the PCI of the serving cell, or the cell identity is the number of the serving cell in the serving cell set of the communication device, or the cell identity is the cell global identity of the serving cell , Such as: CGI or ECGI.
  • a serving cell can be identified by PCI or numbering or cell global, which improves the diversity and flexibility of the cell identification of the serving cell.
  • the first configuration information further includes the identification of the transmission resource of the first multicast service.
  • the communication device can receive the configuration information including the identifier of the transmission resource of the multicast service, and receive the multicast service on the transmission resource indicated by the identifier of the transmission resource, that is, on the specific transmission resource
  • the multicast service is received without blindly checking the multicast service on all transmission resources of the serving cell, and the power consumption of the communication device for receiving the multicast service in the CA scenario is reduced.
  • the method further includes: receiving third configuration information used to update the first configuration information from the first network device.
  • the communication device can receive the updated configuration information from the first network device, and receive the multicast service according to the updated configuration information.
  • the configuration information related to the multicast service is updated in time to ensure the accuracy of receiving the multicast service by the communication device.
  • the method further includes: receiving second indication information from the first network device; the second indication information is used to indicate the first configuration Information is invalid.
  • the communication device can determine that the first configuration information is invalid according to the indication information sent by the first network device for indicating the failure of the first configuration information, and no longer receive multicast services according to the first configuration information, and avoid Waste transmission resources and reduce power consumption for detecting multicast services.
  • a communication device may be a terminal device or a chip or a system on a chip in the terminal device.
  • the communication device can implement the functions performed by the terminal device in the above-mentioned aspects or various possible designs.
  • the functions can be implemented by hardware.
  • the communication device may include: a processor and a transceiver.
  • the processor receives, through the transceiver, the cell identity of the serving cell corresponding to the first multicast service and one of the following multiple types of information from the first network device: the identity of the first multicast service, and the information corresponding to the first multicast service
  • the first configuration information of the RNTI, and according to the first configuration information, the first multicast service is received through the transceiver.
  • the communication device may further include a memory, and the memory is configured to store necessary computer-executable instructions and data of the communication device. When the communication device is running, the processor executes the computer-executable instructions stored in the memory, so that the communication device executes the multicast service transmission method as described in the eighth aspect or any one of the possible designs of the eighth aspect.
  • a computer-readable storage medium may be a readable non-volatile storage medium, and the computer-readable storage medium stores computer instructions when it runs on a computer. , So that the computer can execute the multicast service transmission method described in the eighth aspect or any one of the possible designs of the foregoing aspects.
  • a twelfth aspect provides a computer program product containing instructions, which when running on a computer, enables the computer to execute the multicast service transmission method described in the eighth aspect or any one of the possible designs of the foregoing aspects.
  • a communication device may be a terminal device or a chip or a system on a chip in the terminal device.
  • the communication device includes one or more processors and one or more memories. One or more memories are coupled with one or more processors, and the one or more memories are used to store computer program codes.
  • the computer program codes include computer instructions. When the one or more processors execute the computer When instructed, the communication device is caused to execute the multicast service transmission method described in the eighth aspect or any possible design of the eighth aspect.
  • a chip system in a fourteenth aspect, includes one or more processors and communication interfaces.
  • the one or more processors and communication interfaces can support the chip system to execute the eighth aspect or any one of the eighth aspect. It is possible to design the described multicast service transmission method.
  • the chip system may also include one or more memories; one or more memories are coupled with one or more processors, and the one or more memories store computer program codes or computer instructions; when one or more processes When the computer program code or computer instruction is executed by the device, the chip system executes the multicast service transmission method of the eighth aspect or any possible design of the eighth aspect.
  • the technical effect of any design method in the ninth aspect to the fourteenth aspect may refer to the technical effect of any possible design in the eighth aspect or the eighth aspect, and details are not repeated here.
  • an embodiment of the present application provides a multicast service transmission method.
  • the method is applied to a second network device and includes: receiving an identifier of the terminal device and the first multicast service from the first network device.
  • the identifier the first information used to indicate that the terminal device needs to receive the first multicast service, and send to the first network device the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the information corresponding to the first multicast service.
  • the second configuration information of the cell identity of the serving cell includes: receiving an identifier of the terminal device and the first multicast service from the first network device.
  • the identifier the first information used to indicate that the terminal device needs to receive the first multicast service, and send to the first network device the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the information corresponding to the first multicast service.
  • the second network device can receive the information sent by the first network device, and configure the terminal device with configuration information related to the multicast service according to the information sent by the first network device, such as: multicast service
  • configuration information related to the multicast service such as: multicast service
  • the corresponding RNTI and the serving cell corresponding to the first multicast service so that the terminal device can receive the multicast service through the corresponding RNTI on the designated serving cell according to the configuration information related to the multicast service, without the need for the terminal device to apply it on all serving cells RNTI blind detection is used to schedule the PDCCH of the multicast service, and receive the multicast service according to the detected PDCCH, reducing the power consumption of the terminal device in the CA scenario to detect and receive the multicast service.
  • the first information is included in the secondary cell group addition request message, and the second configuration information is included in the secondary cell group addition response message .
  • the second network device can receive the first information sent by the first network device and send the configuration information to the first network device through the existing secondary cell group addition process, that is, there is no need to communicate with the first network device through new signaling.
  • One network equipment interacts to reduce signaling overhead.
  • the cell identification is the PCI of the serving cell, or the cell identification is the number of the serving cell in the serving cell set of the terminal device, Or, the cell identity is the cell global identity of the serving cell, such as CGI or ECGI.
  • a serving cell can be identified by PCI or numbering or cell global, which improves the diversity and flexibility of the cell identification of the serving cell.
  • the method further includes: sending third configuration information for updating the first configuration information to the first network device.
  • the second network device can send the updated configuration information to the first network device, and the first network device sends the updated configuration information to the terminal device, so that the terminal device can follow the updated configuration information Receive multicast services.
  • the configuration information related to the multicast service is updated in time to ensure the accuracy of the terminal equipment receiving the multicast service.
  • the method further includes: sending to the first network device for instructing the second network device to stop sending the first multicast service The first instruction information.
  • the second network device can send instruction information for instructing to stop sending the first multicast service to the first network device, so that the first network device knows that the multicast service is stopped sending, and does not need to receive/detect the multicast service.
  • Multicast services to avoid waste of transmission resources and reduce power consumption for detecting multicast services.
  • the present application provides a communication device.
  • the communication device may be a second network device or a chip or a system on a chip in the second network device, and may also be a second network device for implementing the fifteenth aspect or Any possible design of the fifteenth aspect is a functional module of the method.
  • the communication device can implement the functions performed by the second network device in the fifteenth aspect or the possible design of the sixteenth aspect, and the functions can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device includes: a receiving unit and a sending unit;
  • the receiving unit is configured to receive the first information including the identification of the terminal device and the identification of the first multicast service from the first network device, and the first information used to indicate that the terminal device needs to receive the first multicast service;
  • the sending unit is configured to send second configuration information including the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identifier of the serving cell corresponding to the first multicast service to the first network device.
  • the communication device can receive the information sent by the first network device, and configure the terminal device with configuration information related to the multicast service according to the information sent by the first network device, such as: multicast service correspondence RNTI and the serving cell corresponding to the first multicast service, so that the terminal device can receive the multicast service through the corresponding RNTI on the designated serving cell according to the configuration information related to the multicast service, without the terminal device applying RNTI on all serving cells
  • Blind detection is used to schedule the PDCCH of the multicast service, and receive the multicast service according to the detected PDCCH, so as to reduce the power consumption of the terminal device in the CA scenario to detect and receive the multicast service.
  • the first information is included in the secondary cell group addition request message, and the second configuration information is included in the secondary cell group addition response message .
  • the communication device can receive the first information sent by the first network device and send the configuration information to the first network device through the existing secondary cell group addition process, that is, there is no need to communicate with the first network device through new signaling.
  • Network equipment interacts to reduce signaling overhead.
  • the cell identifier is the PCI of the serving cell, or the cell identifier is the number of the serving cell in the serving cell set of the terminal device, Or, the cell identity is the cell global identity of the serving cell, such as CGI or ECGI.
  • a serving cell can be identified by PCI or numbering or cell global, which improves the diversity and flexibility of the cell identification of the serving cell.
  • the method further includes: sending third configuration information for updating the first configuration information to the first network device.
  • the communication device can send updated configuration information to the first network device, and the first network device sends the updated configuration information to the terminal device, so that the terminal device can receive the updated configuration information according to the updated configuration information.
  • the multicast service in this way, timely updates the configuration information related to the multicast service to ensure the accuracy of the terminal equipment receiving the multicast service.
  • the method further includes: sending to the first network device a message for instructing the communication device to stop sending the first multicast service The first instruction information.
  • the communication device can send instruction information for instructing to stop sending the first multicast service to the first network device, so that the first network device knows that the multicast service is stopped sending, and does not need to receive/detect the multicast service any more. Broadcast services, avoid waste of transmission resources and reduce power consumption for detecting multicast services.
  • a communication device may be a second network device or a chip or a system on a chip in the second network device.
  • the communication device can implement the functions performed by the second network device in the above-mentioned aspects or various possible designs.
  • the functions can be implemented by hardware.
  • the communication device may include: a processor and a transceiver. Device.
  • the processor is configured to receive the identification of the terminal device and the identification of the first multicast service from the first network device through the transceiver, and is used to indicate that the terminal device needs to receive the first information of the first multicast service, and send the first information to the first network device through the transceiver.
  • a network device sends second configuration information including the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identifier of the serving cell corresponding to the first multicast service.
  • the communication device may further include a memory, and the memory is used to store necessary computer-executed instructions and data of the communication device.
  • the processor executes the computer-executable instructions stored in the memory, so that the communication device executes the multicast service as described in the fifteenth aspect or any one of the possible designs of the fifteenth aspect. Transmission method.
  • a computer-readable storage medium is provided.
  • the computer-readable storage medium is a readable non-volatile storage medium, and the computer-readable storage medium stores computer instructions or programs, and when it runs on a computer , Enabling the computer to execute the multicast service transmission method described in the fifteenth aspect or any one of the possible designs of the fifteenth aspect.
  • a computer program product containing instructions which when running on a computer, enables the computer to execute the multicast service transmission described in the fifteenth aspect or any one of the possible designs of the fifteenth aspect method.
  • a communication device may be a second network device or a chip or a system on a chip in the second network device.
  • the communication device includes one or more processors and one or more memories.
  • the one or more memories are coupled with the one or more processors, and the one or more memories are used to store computer program codes, and the computer program codes include computer instructions.
  • the communication device is caused to execute the fifteenth aspect or any possible design of the multicast service transmission method of the fifteenth aspect.
  • a chip system in a twenty-first aspect, includes one or more processors and communication interfaces.
  • the one or more processors and communication interfaces can support the chip system to perform the first aspect or the first aspect. Any possible design of the multicast service transmission method.
  • the chip system may also include one or more memories; one or more memories are coupled with one or more processors, and one or more memories store computer program codes or computer instructions; when one or more processors When the computer program code or computer instruction is executed, the chip system is caused to execute the multicast service transmission method described in the fifteenth aspect or any possible design of the fifteenth aspect.
  • the technical effect of any design method in the seventeenth aspect to the twenty-first aspect may refer to the technical effect of any possible design in the fifteenth aspect or the fifteenth aspect, and will not be repeated.
  • an embodiment of the present application provides a communication system that includes the first network device of the communication device according to any one of the second to seventh aspects, and includes The terminal equipment of the communication device according to any aspect of the fourteenth aspect; or,
  • the communication system includes the first network device of the communication device according to any one of the second aspect to the seventh aspect, the terminal device including the communication device according to any one of the ninth aspect to the fourteenth aspect, and A second network device including the communication device according to any one of the sixteenth aspect to the twenty-first aspect.
  • Figure 1a is a schematic diagram of a carrier aggregation scenario provided by an embodiment of the application.
  • Figure 1b is a schematic diagram of a dual connection scenario provided by an embodiment of the application.
  • FIG. 2 is an architecture diagram of a communication system provided by an embodiment of this application.
  • FIG. 3 is a schematic diagram of the composition of a communication device provided by an embodiment of the application.
  • FIG. 4 is a flowchart of a multicast service transmission method provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of multicast service transmission provided by an embodiment of the application.
  • FIG. 6 is a configuration flowchart provided by an embodiment of the application.
  • FIG. 7 is a flowchart of another multicast service transmission method provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of the composition of a communication device 80 provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of the composition of a communication device 90 provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of the composition of a communication device 100 provided by an embodiment of this application.
  • FIG. 11 is a schematic diagram of the composition of a communication system provided by an embodiment of this application.
  • FIG. 12 is a schematic diagram of the composition of another communication system provided by an embodiment of this application.
  • CA Carrier aggregation
  • CC component carriers
  • CA is a technology to increase transmission bandwidth, which can effectively increase the uplink and downlink transmission rate. For example, as shown in Figure 1a, through the CA technology, five 20 megahertz (MHz) CCs can be aggregated to achieve a maximum transmission bandwidth of 100 MHz.
  • a carrier can be referred to as a cell.
  • the cell can be divided into a primary cell (Pcell) and a secondary cell (Scell).
  • Pcell primary cell
  • Scell secondary cell
  • the terminal device can receive common channel information on the Pcell, access the network, etc., and can perform service transmission on the Scell.
  • the terminal device can support service transmission on multiple cells at the same time.
  • multiple cells supported by the terminal device can be pre-configured by the network device to the terminal device.
  • the network device can select a suitable cell from multiple cells supported by the terminal device, such as an idle cell, and apply the RNTI corresponding to the cell to the physical downlink control channel (
  • the physical downlink control channel (PDCCH) is scrambled, and the PDCCH and service are sent to the terminal equipment on the cell.
  • the terminal equipment On the terminal equipment side, because the terminal equipment’s sending behavior to the network equipment is unknowable, the terminal equipment applies RNTI to detect the PDCCH sent by the network equipment on all the cells it supports, and receives the service sent by the network equipment according to the detected PDCCH.
  • the power consumption of the device is too large.
  • the network equipment indicates the cell used to send the PDCCH to the terminal equipment, so that the terminal equipment detects the PDCCH on the cell indicated by the network equipment, and according to the detected PDCCH Receiving services sent by network equipment, reducing power consumption.
  • the service sent by the network device to the terminal device may be a multicast service or a unicast service, which is not limited.
  • a multicast service can be a service that a network device sends to two or more network devices at the same time
  • a unicast service can be a service that a network device sends to one terminal device.
  • a network device sends a multicast service to a terminal device as an example
  • the process of sending a unicast service from a network device to a terminal device in a CA scenario can refer to the service sent by the network device to the terminal device as multicast. How the business is implemented.
  • DCI downlink control information
  • DCI can include common control information (such as system information, etc.) and user-specific information (such as downlink resource allocation indication, uplink scheduling, random access response, etc.). Uplink power control parameters, etc.) and so on.
  • the PDCCH can schedule the service sent by the network device through the DCI carried by the PDCCH.
  • the DCI can be used to indicate the transmission parameters of the service sent by the network device, such as the time-frequency resource location of the service sent by the network device.
  • the network device uses RNTI to scramble the PDCCH and sends the scrambled PDCCH to the terminal device.
  • the terminal device uses the RNTI to demodulate/descramble the PDCCH to obtain the DCI, and then use the time-frequency resource indicated by the DCI Receive services sent by network equipment at the location.
  • RNTI can be called radio network temporary identity (radio network tempory identity).
  • the terminal equipment can correspond to multiple RNTIs at the same time, and realize functions such as system broadcasting and user-specific service scheduling by using RNTI to scramble the PDCCH.
  • the RNTI can correspond/associate with the service scheduled by the PDCCH, one service can correspond/associate with one RNTI, and different services correspond to different RNTIs.
  • service 1 can correspond to RNTI1
  • service 2 can correspond to RNTI2
  • service 3 can correspond to RNTI3.
  • the correspondence/association relationship between the service and RNTI can be pre-configured in the terminal equipment and/or the network equipment that provides the service for the terminal equipment; or the correspondence/association relationship between the service and RNTI is configured by the network equipment, and the network equipment
  • the device sends to the terminal device through high-level signaling.
  • the network device can include the correspondence/association relationship between the service and the RNTI in the high-level signaling and send it to the terminal device.
  • various RNTIs are classified according to the business types corresponding to RNTIs, such as: cell radio network temporary identifier (C-RNTI), group radio network temporary identifier, G-RNTI ), C-RNTI corresponds to unicast service, and G-RNTI corresponds to multicast service.
  • the C-RNTI can be used as the identification of the terminal device in the signal information between the terminal device and the network device, and is used to identify the terminal device.
  • the embodiment of the present application does not limit the connection mode of the terminal device in the CA scenario, and the connection mode of the terminal device may include a dual connection (DC) mode and a non-DC mode.
  • the network device that applies CA technology to send services to the terminal device can be the main network device; when the terminal device is working in non-DC mode, the network device that applies CA technology to send services to the terminal device can be the main network device
  • Network equipment can also be auxiliary network equipment without limitation.
  • the DC mode means that the terminal device is connected to two network devices at the same time.
  • DC can further increase the transmission rate on the basis of CA, and can also increase the reliability of transmission.
  • the two network devices connected by the terminal device can be the main network device and the auxiliary network device.
  • the cell covered by each network device can form a CA group, and the two network devices can be regarded as two CA groups, where the main network device covers
  • the CA group can be a master cell group (MCG), and the MCG can carry the control plane and the user plane of the terminal device, and can be responsible for sending services to the terminal device or sending control signaling to the terminal device.
  • the CA group covered by the secondary network device may be called a secondary cell group (SCG).
  • the SCG can carry the user plane of the terminal device and can be responsible for sending services to the terminal device.
  • a terminal device can access network device 1 and network device 2 at the same time. Assuming that the cells covered by network equipment 1 form CA group 1, the cells covered by network equipment 2 form CA group 2, CA group 1 is MCG, and CA group 2 is SCG, then network device 1 can report to terminal equipment on CA group 1. To send control signaling and transfer services, the network device 2 can transfer services and so on to the terminal device on the CA group 2.
  • Non-DC mode means that a terminal device is connected to a network device, and the network device provides services for the terminal device.
  • This network device can be called the main network device of the terminal device, and is responsible for sending control plane signaling and services to the terminal device.
  • the multicast service transmission method provided by the embodiments of this application can be used in a communication system that supports carrier aggregation (CA) and dual connection (DC), for example, it can be applied to the fourth generation (4G) system , Long term evolution (LTE) system, 5th generation (5G) system, new radio (NR) system, NR-vehicle-to-everything (V2X) system Any of the systems in can also be applied to other next-generation communication systems, etc., without limitation.
  • 4G fourth generation
  • LTE Long term evolution
  • 5G 5th generation
  • NR new radio
  • V2X NR-vehicle-to-everything
  • FIG. 2 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include multiple network devices and multiple terminal devices, such as user equipment (UE).
  • the UE may be located in the coverage area of the network equipment, and is connected to the network equipment through the Uu port.
  • each network device can cover one or more cells
  • the terminal device can work in DC mode or non-DC mode
  • the terminal device can be located in one or more cells covered by the network device
  • the terminal device can The service provided by the network device is received through the cell where it is located, or it can be described as the network device can provide services for the terminal device through the cell covered by it.
  • the cell that provides services for the terminal device may be referred to as a serving cell.
  • network device 1 covers cell 1.1 and cell 1.2
  • UE1 can be located in cell 1.1 and cell 1.2, and can receive services provided by network device 1 through cell 1.1 and cell 1.2, then cell 1.1 and cell 1.2 can be called It is the serving cell of UE1.
  • Network equipment 2 covers cell 2.1 and cell 2.2.
  • UE2 can be located in cell 1.1 and cell 2.1. It can receive the service provided by network device 1 through cell 1.1 and the service provided by network device 2 through cell 2.2. Then cell 1.1 and cell 2.1 can be called It is the serving cell of UE2.
  • Figure 2 is only an exemplary framework diagram.
  • the number of network devices, the number of UEs, and the number of cells covered by the network devices included in Figure 2 are not limited, and the names of each device are not limited, and except for the figure
  • other nodes may also be included, such as core network equipment, gateway equipment, application servers, etc., which are not limited.
  • the network equipment in FIG. 2 is mainly used to implement terminal equipment resource scheduling, wireless resource management, wireless access control and other functions.
  • the network device may be any of a small base station, a wireless access point, a transmission receive point (TRP), a transmission point (TP), and some other access node.
  • the device used to implement the function of the network device may be a network device, or a device capable of supporting the network device to implement the function, such as a chip system.
  • the multicast service transmission method provided by the embodiment of the present application is described.
  • the UE in FIG. 2 may be a terminal equipment (terminal equipment) or a mobile station (mobile station, MS) or a mobile terminal (mobile terminal, MT), etc.
  • the UE may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiver function, it may also be a virtual reality (VR) device, an augmented reality (AR) device, or wireless in industrial control.
  • Terminals wireless terminals in unmanned driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in smart cities, smart homes, vehicle-mounted terminals, etc.
  • the device used to implement the function of the terminal device may be a terminal device, or may be a device capable of supporting the terminal device to implement the function, such as a chip system.
  • the device for implementing the function of the terminal device is the terminal device as an example to describe the multicast service transmission method provided in the embodiment of the present application.
  • the network device can indicate the configuration information related to the multicast service to the terminal device, such as: the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information: RNTI corresponding to the multicast service and the multicast service.
  • the terminal equipment uses the RNTI to receive the PDCCH in the designated serving cell according to the configuration information related to the multicast service, and receives the multicast service according to the received PDCCH.
  • the implementation process refer to the description in the embodiments corresponding to FIGS. 4 to 7 below.
  • the serving cell corresponding to the first multicast service may refer to the serving cell corresponding to the PDCCH used to schedule the first multicast service, and the network device may send to the terminal device on the serving cell PDCCH used to schedule the first multicast service.
  • each network element shown in FIG. 2, such as a terminal device and a network device may adopt the composition structure shown in FIG. 3 or include the components shown in FIG. 3.
  • 3 is a schematic diagram of the composition of a communication device 300 provided by an embodiment of this application.
  • the communication device 300 may be a terminal device or one of the terminal devices. Chip or system on chip.
  • the communication device 300 may be a network device or a chip or a system on a chip in the network device.
  • the communication device 300 may include a processor 301, a communication line 302, and a transceiver 303. Further, the communication device 300 may further include a memory 304. Among them, the processor 301, the memory 304, and the transceiver 303 may be connected through a communication line 302.
  • the processor 301 may be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, or a microcontroller. , Programmable logic device (PLD) or any combination of them.
  • the processor 301 may also be other devices with processing functions, such as circuits, devices, or software modules.
  • the communication line 302 is used to transmit information between the components included in the communication device 300.
  • the transceiver 303 is used to communicate with other devices or other communication networks.
  • the other communication network may be Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.
  • the transceiver 303 may be a radio frequency module, a communication interface, or any device capable of realizing communication.
  • the embodiment of the present application only uses the transceiver 303 as a radio frequency module as an example for description.
  • the radio frequency module may include an antenna, a radio frequency circuit, etc., and the radio frequency circuit may include a radio frequency integrated chip, a power amplifier, and the like.
  • the memory 304 is used to store instructions. Among them, the instruction may be a computer program.
  • the memory 304 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and/or instructions, and may also be a random access memory (random access memory, RAM) or Other types of dynamic storage devices that store information and/or instructions can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory, CD- ROM) or other optical disc storage, optical disc storage, magnetic disk storage media or other magnetic storage devices.
  • EEPROM electrically erasable programmable read-only memory
  • CD- ROM compact disc read-only memory
  • Optical disc storage includes compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.
  • the memory 304 may exist independently of the processor 301, or may be integrated with the processor 301.
  • the memory 304 may be used to store instructions or program codes or some data.
  • the memory 304 may be located in the communication device 300 or outside the communication device 300 without limitation.
  • the processor 301 is configured to execute instructions stored in the memory 304 to implement the multicast service transmission method provided in the following embodiments of the present application.
  • the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3.
  • the communication device 300 includes multiple processors, for example, in addition to the processor 301 in FIG. 3, it may also include a processor 307.
  • the communication apparatus 300 further includes an output device 305 and an input device 306.
  • the input device 306 is a device such as a keyboard, a mouse, a microphone, or a joystick
  • the output device 305 is a device such as a display screen and a speaker.
  • the communication device 300 may be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal device, an embedded device, a chip system, or a device with a similar structure in FIG. 3.
  • the composition structure shown in FIG. 3 does not constitute a limitation to the communication device.
  • the communication device may include more or less components than those shown in the figure, or combine certain components. , Or different component arrangements.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • each device in the following embodiments may have the components shown in FIG. 3.
  • the actions, terms, etc. involved in the various embodiments of the present application can be referred to each other, and are not limited.
  • the name of the message or the name of the parameter in the message in the embodiment of the present application is just an example, and other names may also be used in specific implementations, which are not limited.
  • the actions involved in the embodiments of the present application are just examples, and other names may also be used in specific implementations.
  • the “carried on” described in the embodiments of the present application may also be replaced with “carried on” or “included in”.
  • Fig. 4 is a flowchart of a multicast service transmission method provided by an embodiment of the application, as shown in Fig. 4, including:
  • Step 401 The first network device determines first configuration information.
  • the first network device may be any network device in FIG. 2, for example, it may be the network device 1 in FIG. 2 or the network device 2 in FIG. 2, which is not limited in the embodiment of the present application.
  • the first configuration information can be used to instruct the terminal device to receive the first multicast service.
  • the terminal device can be any UE in the coverage area of the first network device.
  • the terminal device can work in DC mode or non-DC mode. model.
  • the terminal device when the first network device is the network device 1 in Figure 2, the terminal device can be any UE in the coverage area of the network device 1, for example: it can be any UE in the cell 1.1 , It can also be any UE in cell 1.2.
  • the terminal device can be any UE in the coverage area of the network device 2, for example: it can be any UE in the cell 2.1, or can be any UE in the cell 2.2 Any UE.
  • the first multicast service can be any multicast service provided by the network device for the terminal device, and is not limited.
  • the first multicast service can be any multicast service provided by the first network device for the terminal device; when the terminal device is working in the DC mode, the first multicast service can be the secondary cell Group, such as: the following second network device, any multicast service provided by the terminal device.
  • the first configuration information may include the identity of the serving cell corresponding to the first multicast service, and one or more of the following information: the identity of the first multicast service, and the RNTI corresponding to the first multicast service. That is, the first configuration information may include the identity of the serving cell corresponding to the first multicast service and the identity of the first multicast service; or, the first configuration information may include the identity of the serving cell corresponding to the first multicast service and the first multicast service. Or, the first configuration information may include the identity of the serving cell corresponding to the first multicast service, the identity of the first multicast service, and the RNTI corresponding to the first multicast service.
  • the identifier of the first multicast service may uniquely identify the first multicast service.
  • the identifier of the first multicast service may be an application layer identifier of the first multicast service.
  • the identifier of the first multicast service may be a service ID (service ID) of the first multicast service.
  • the first multicast service can correspond to the RNTI
  • the network device can use the RNTI corresponding to the first multicast service to scramble the PDCCH used to schedule the first multicast service, and send the scrambled PDCCH and
  • the terminal device may apply the RNTI corresponding to the first multicast service to descrambling the PDCCH sent by the network device, and receive the first multicast service according to the successfully descrambling PDCCH.
  • the RNTI corresponding to the first multicast service may be referred to as G-RNTI or multicast RNTI.
  • the RNTI corresponding to the first multicast service may be equivalent to the underlying identifier of the first multicast service, and the first multicast service can be uniquely identified according to the RNTI corresponding to the first multicast service and the correspondence between the service and the RNTI.
  • the serving cell corresponding to the first multicast service may be included in the serving cell set of the terminal device, and may be any serving cell in the serving cell set of the terminal device, and the serving cell corresponding to the first multicast service may transmit data PDCCH for scheduling the first multicast service.
  • the network device can select the serving cell corresponding to the first multicast service from the set of serving cells of the terminal device in an existing manner, and send the PDCCH for scheduling the first multicast service to the terminal device on the selected serving cell. .
  • the serving cell set of the terminal device may include one or more serving cells of the terminal device, where each serving cell corresponds to a cell identifier (cell ID), that is, different serving cells of the terminal device correspond to different cells Identification, the cell identification of the serving cell can uniquely identify the serving cell.
  • the serving cell set of the terminal device and the identity of each serving cell in the serving cell set may be pre-configured to the terminal device by the network side.
  • the cell identifier of the serving cell may be the PCI of the serving cell.
  • the cell identifier of the serving cell may be the number of the serving cell in the serving cell set of the terminal device, for example: it may be the index of the serving cell in the cell list configured for the terminal device on the network side, and different network devices
  • the cell identities of the serving cells under the coverage can be the same or different, and are not limited.
  • the serving cell set of the terminal equipment includes five serving cells, and the five serving cells can be numbered with numbers 1 to 5, so that the cell identities of the five serving cells are: serving cell 1, serving cell 2, Serving cell 3, serving cell 4, serving cell 5.
  • the cell identifier of the serving cell may be the cell global identifier (CGI) of the serving cell or the evolved cell global identifier (ECGI).
  • CGI cell global identifier
  • ECGI evolved cell global identifier
  • the first The configuration information may also include other information, such as: the identification of the transmission resource of the first multicast service, the identification of the transmission resource of the first multicast service may be used to indicate the transmission resource of the first multicast service, and the transmission resource of the first multicast service.
  • the transmission resource can be a bandwidth part (BWP) or other granular transmission resources, which are not limited.
  • step 401 there may be multiple methods for the first network device to determine the first configuration information:
  • the first network device determining the first configuration information may include: when the first network device determines that the terminal device needs to receive the first network device When the multicast service or the first network device determines that the terminal device joins the multicast group corresponding to the first multicast service, the first network device itself determines the identity of the serving cell that provides the first multicast service for the terminal device, and sets the first multiple The identity of the serving cell corresponding to the broadcast service and the identity of the first multicast service are included in the first configuration information; or, the first network device itself determines the identity of the serving cell that provides the first multicast service for the terminal device, and according to the first The identity of a multicast service and the correspondence/association relationship between the service and the RNTI determine the RNTI corresponding to the first multicast service, and include the identity of the serving cell corresponding to the first multicast service and the identity of the first multicast service in In the first configuration information;
  • the first network device determining the first configuration information may include: The device sends the first information including the identification of the terminal device and the identification of the first multicast service, receives the second configuration information from the second network device, and determines the first configuration information according to the second configuration information.
  • the first network device when the terminal device is working in the DC mode, the first network device itself determines that the terminal device needs to receive the first multicast service or the first network device determines that the terminal device joins the multicast group corresponding to the first multicast service, and generates the first
  • the configuration information such as: the first network device can refer to the process by which the first network device determines the first configuration information when the terminal device is working in the non-DC mode, which will not be described in detail.
  • the second network device may be any network device that can provide/send the first multicast service to the terminal device.
  • the second configuration information may include one or more of the identity of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identity of the serving cell corresponding to the first multicast service.
  • the first network device can refer to the method shown in FIG. 6 to determine the first configuration information from the second configuration information of the second network device according to the second configuration information.
  • Step 402 The first network device sends the first configuration information to the terminal device.
  • the first network device sending the first configuration information to the terminal device may include: the first network device includes the first configuration information in the DCI and sends the first configuration information to the terminal device, for example, on the primary cell of the first network device The terminal device sends the DCI, where the DCI includes the first configuration information.
  • the first network device sending the first configuration information to the terminal device may include: the first network device includes the first configuration information in radio resource control (radio resource control, RRC) signaling and sends it to the terminal device,
  • RRC radio resource control
  • the RRC signaling is sent to the terminal device on the primary cell of the first network device, where the RRC signaling includes the first configuration information.
  • Step 403 The terminal device receives the first configuration information, and receives the first multicast service according to the first configuration information.
  • the terminal device receiving the first multicast service according to the first configuration information may include: the terminal device determines the RNTI and the serving cell corresponding to the first multicast service according to the first configuration information, and applying the RNTI to detect on the serving cell for scheduling
  • the PDCCH of the first multicast service receives the first multicast service at the time-frequency resource location indicated by the PDCCH.
  • the PDCCH used to schedule the first multicast service and the first multicast service may be sent by the first network device to the terminal device, or may be sent by the second network device to the terminal device.
  • the first network device can use RNTI to scramble the PDCCH used to schedule the first multicast service, and send to the terminal device on the serving cell corresponding to the first multicast service
  • the scrambled PDCCH and the first multicast service are sent on the time-frequency resource indicated by the PDCCH.
  • the second network device can use RNTI to scramble the PDCCH used to schedule the first multicast service, and send the scrambled message to the terminal device on the serving cell corresponding to the first multicast service And send the first multicast service on the PDCCH indicated by the PDCCH and the time-frequency resource indicated by the PDCCH.
  • the multicast service can be sent to the terminal device through the second network device, which reduces the burden of sending the multicast service by the first network device.
  • the first network device may also send to the terminal device for scheduling the first multicast service.
  • the PDCCH and the first multicast service are not restricted.
  • the first configuration information includes the identity of the serving cell corresponding to the first multicast service and the identity of the first multicast service, and the terminal device can identify the first multicast service according to the cell identity of the serving cell.
  • the serving cell corresponding to the broadcast service determines the RNTI corresponding to the first multicast service according to the identity of the first multicast service and the correspondence/association relationship between the pre-configured service and the RNTI, and applies the determined RNTI to the serving cell
  • the PDCCH used for scheduling the first multicast service is detected in all the search spaces above, and the first multicast service is received at the time-frequency resource location indicated by the detected PDCCH.
  • the first configuration information includes the identity of the serving cell corresponding to the first multicast service and the RNTI corresponding to the first multicast service.
  • the terminal device can identify the serving cell according to the cell identity of the serving cell.
  • the RNTI corresponding to the first multicast service detects the PDCCH for scheduling the first multicast service in all search spaces on the serving cell, and receives the first multicast service at the time-frequency resource location indicated by the detected PDCCH .
  • the first configuration information includes the identity of the serving cell corresponding to the first multicast service, the identity of the first multicast service, and the RNTI corresponding to the first multicast service.
  • the cell identifier identifies the serving cell, determines the search space corresponding to the first multicast service according to the identifier of the first multicast service and the correspondence between the service and the search space, and applies the RNTI corresponding to the first multicast service on the serving cell.
  • a PDCCH used for scheduling the first multicast service is detected in a search space corresponding to a multicast service, and the first multicast service is received at the time-frequency resource location indicated by the detected PDCCH. In this way, the PDCCH can be detected in the designated search space on the serving cell, and the power consumption of the terminal device for detecting the PDCCH can be reduced.
  • the corresponding relationship between the service and the search space can be pre-configured by the network device to the terminal device. Specifically, the corresponding relationship between the service and the search space can be referred to the existing description, and will not be repeated.
  • Figure 4 uses the first multicast service as an example to describe the process in which the terminal device receives the first multicast service.
  • the network device can instruct the terminal device to The PDCCH used for scheduling unicast services is detected on the designated serving cell to reduce the power consumption of the terminal equipment for detecting the PDCCH and receiving the unicast service according to the detected PDCCH.
  • the network device can send unicast service-related configuration information to the terminal device, such as: the cell identity of the serving cell corresponding to the unicast service and one or more of the following information: the identity of the unicast service, the unicast service corresponding RNTI, the terminal device can use the corresponding RNTI to detect the PDCCH used to schedule the unicast service on the designated serving cell according to the configuration information related to the unicast service, and receive the unicast service at the time-frequency resource location indicated by the detected PDCCH .
  • the terminal equipment does not need to apply the corresponding RNTI to detect the PDCCH used for scheduling unicast services on all the cells it supports, thereby reducing the power consumption of the terminal equipment.
  • the RNTI corresponding to the unicast service may be called a cell RNTI (cell RNTI, C-RNTI) or a unicast RNTI, which is not limited.
  • the UE has CA capability and supports communication with the base station through Pcell, Scell1 and Scell2.
  • the base station may include the G-RNTI corresponding to the multicast service and the Scell2 identifier in the configuration information and send it to the UE.
  • the UE may apply G-RNTI on Scell2 to detect the PDCCH used for scheduling the multicast service according to the configuration information, and receive the multicast service at the time-frequency resource location indicated by the detected PDCCH.
  • G-RNTI on the three cells of Pcell, Scell1 and Scell2 to detect the PDCCH used for scheduling multicast services, thereby reducing the power consumption of the terminal equipment.
  • the base station may include the C-RNTI corresponding to the unicast service and the Scell1 identifier in the configuration information and send it to the UE. Subsequently, the UE can apply the C-RNTI on Scell1 to detect the PDCCH used for scheduling the unicast service according to the configuration information, and receive the unicast service at the time-frequency resource location indicated by the detected PDCCH. There is no need to apply C-RNTI on the three cells of Pcell, Scell1 and Scell2 to detect the PDCCH used for scheduling unicast services, thereby reducing the power consumption of the terminal equipment.
  • FIG. 4 uses the first multicast service as an example to describe the process in which the terminal device receives the first multicast service.
  • the terminal device can receive in multiple designated serving cells.
  • Multiple multicast services such as: the first network device can send to the terminal device the identifiers of multiple multicast services, the RNTI corresponding to each multicast service, and the cell identifier of the serving cell corresponding to each multicast service, and the terminal The device receives multiple multicast services on multiple serving cells according to the received configuration information.
  • the configuration information sent by the base station to the UE includes ⁇ multicast service 1, RNTI1, serving cell 1 ⁇ , ⁇ multicast service 2, RNTI2, serving cell 2 ⁇ , UE
  • RNTI1 on the serving cell 1 to detect the PDCCH used to schedule the multicast service 1 according to the configuration information, receive the multicast service 1 on the time-frequency resources indicated by the detected PDCCH, and on the serving cell 2.
  • the RNTI2 is used to detect the PDCCH used for scheduling the multicast service 2, and the multicast service 2 is received on the time-frequency resource indicated by the detected PDCCH.
  • the first network device can determine configuration information related to the multicast service, such as: the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information: multicast service
  • the corresponding RNTI and the identifier of the multicast service and notify the terminal device of the configuration information related to the multicast service.
  • the terminal device uses the corresponding RNTI to detect the configuration information related to the multicast service on the designated serving cell. Schedule the PDCCH of the multicast service, and receive the multicast service according to the detected PDCCH.
  • the method shown in Figure 4 does not require terminal equipment to blindly check PDCCHs for scheduling multicast services on all serving cells, reducing the need for terminal equipment to detect PDCCHs in CA scenarios and receive multicast services based on the detected PDCCHs. Power consumption.
  • the first network device when the terminal is working in the DC mode, can obtain the second configuration information from the second network device with reference to the method shown in FIG. 6, according to the second configuration The information determines the first configuration information.
  • the method shown in FIG. 6 may not depend on the method shown in FIG. 4, and the method shown in FIG. 6 may be implemented separately, that is, the embodiment of the present application is not limited to the configuration method shown in FIG.
  • the second network device can also refer to the method shown in FIG.
  • the device may request the uplink transmission resource from the second network device through the first network device, and the second network device may assist the first network device to send related configuration information of the uplink transmission resource to the terminal device.
  • Fig. 6 is a configuration flowchart provided by an embodiment of the application. As shown in Fig. 6, the method includes:
  • Step 601 The first network device sends the first information to the second network device.
  • the first network device may be the main network device that provides network services for the terminal device in FIG. 2, and the second network device may be the auxiliary network device that provides the network device for the terminal device in FIG. 2.
  • the primary network equipment and the secondary network equipment are relative concepts, and the primary network equipment corresponds to the primary cell group, bears the control plane and user plane of the terminal equipment, and can send service and control signaling to the terminal equipment. Wait.
  • the auxiliary network device corresponds to the auxiliary cell group, bears the user plane of the terminal device, and can send services to the terminal device.
  • the first information may include the identification of the terminal device and the identification of the first multicast service.
  • the first information may be used to indicate that the terminal device needs to receive the first multicast service.
  • the first information may be used to request the second network device to send the first multicast service to the terminal device or to request to join the multicast group corresponding to the first multicast service.
  • the second network device may determine that the terminal device requires the first multicast service according to the first information.
  • the identifier of the terminal device is used to identify a terminal device or the identifier described as a terminal device can be used to identify a specific terminal device that requires the first multicast service.
  • the identification of the terminal device may be the international mobile subscriber identification number (IMSI) of the terminal device or the mobile subscriber identification number (MSIN) or the temporary mobile user identification (temporary mobile user identification) of the terminal device.
  • subscriber identity, TMSI) or terminal device-specific Xn application protocol identifier UE specific Xn application protocol identifier, UE specific XnAP ID, etc.
  • the terminal device identifier can also be replaced with other identifiers that can identify
  • the unicast service is for a specific terminal device.
  • the identification of the terminal device can also be replaced with C-RNTI, which is not restricted.
  • step 401 For the related definition of the identifier of the first multicast service, reference may be made to the description in step 401, which will not be repeated.
  • the first network device determines that the second network device is required to send the first multicast service to the terminal device, for example, the first network device determines that it is overloaded to send the first multicast service and/or determines that the terminal device is working In the DC mode, the first network device sends the first information to the second network device.
  • the first network device may obtain the capability information of the terminal device in advance by using an existing method, and the capability information of the terminal may include indicating whether the terminal device is working in the DC mode, and further, the first network device may determine the terminal device according to the capability information of the terminal device Work in DC mode.
  • the first network device may include the first information in the secondary cell group addition request and send it to the second network device, or include it in other dedicated messages or newly added messages and send it to the second network device, without limitation.
  • the secondary cell group addition request may be an add secondary base station message or an add secondary cell group (add secondary cell group, Add SCG) message or a secondary base station addition request (S-NODE ADDITION REQUEST).
  • Step 602 The second network device receives the first information, and sends the second configuration information to the first network device.
  • the second configuration information may be used to instruct the terminal device to receive the first multicast service.
  • the parameters included in the second configuration information may be the same as those included in the first configuration information.
  • the second configuration information may include the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the first multicast service correspondence. One or more of the cell identities of the serving cell.
  • the second configuration information may be any information that supports the transmission protocol between the second network device and the first network device
  • the first configuration information may be any information that supports the transmission protocol between the first network device and the terminal device
  • the first configuration information may be RRC signaling or DCI
  • the message format of the second configuration information may be different from the message format of the first configuration information
  • the position of the same parameter in the second configuration information is different from that of the first configuration information. The position in is different.
  • both configuration information 1 and configuration information 2 may include the identity of the serving cell, but the identity of the serving cell is located in the bit field from the first bit to the eighth bit of the second configuration information, and the serving cell’s identity
  • the identifier may be located in the bit field from the 6th bit to the 13th bit of the first configuration information.
  • step 401 For the related description of the RNTI corresponding to the first multicast service and the cell identity of the serving cell corresponding to the first multicast service, reference may be made to the description in step 401, which will not be repeated.
  • the second network device may determine that the terminal device requires the first multicast service according to the identification of the first multicast service and the identification of the terminal device. Subsequently, when the second network device determines to provide the first multicast service for the terminal device in combination with its own transmission capability, it sends the second configuration information to the first network device.
  • the second network device includes the second configuration information in the secondary cell group addition response and sends it to the first network device, or includes it in other dedicated messages or newly added messages and sends it to the first network device, which is not limited.
  • the secondary cell group adding response can also be described as adding secondary base station response or Add SCG response S-NODE ADDITION REQUEST ACKNOWLEDGE, which is not limited.
  • the secondary cell group addition response can be the add secondary base station response;
  • the secondary cell group addition request is Add SCG, the secondary cell group addition response can be the Add SCG response;
  • the secondary cell group addition request is S-NODEADDITIONREQUEST, the secondary cell group addition response can be S-NODEADDITIONREQUEST ACKNOWLEDGE.
  • first information in step 601 is included in the secondary cell group addition request, and the second configuration information in step 602 is included in the secondary cell group addition response. These two actions can exist at the same time or alternatively exist. limit.
  • Step 603 The first network device receives the second configuration information, and sends the first configuration information to the terminal device according to the second configuration information.
  • the first network device sending the first configuration information to the terminal device according to the second configuration information may include: the first network device generates the first configuration information according to the second configuration information, and sends the first configuration information to the terminal device.
  • the first network device may include the same parameter information as the second configuration information, but the formats of the two configuration information are different.
  • the network device encapsulates the parameters included in the second configuration information in the message format corresponding to the first configuration information. Together, get the first configuration information.
  • the second configuration information includes the RNTI corresponding to the first multicast service and the cell identifier of the serving cell corresponding to the first multicast service
  • the first network device obtains the first multicast service from the second configuration information.
  • the RNTI corresponding to the first multicast service and the cell identity of the serving cell corresponding to the first multicast service, and the obtained RNTI corresponding to the first multicast service and the cell identity of the serving cell corresponding to the first multicast service are corresponding to the first configuration information
  • the first configuration information is encapsulated together to obtain the first configuration information, and the first configuration information is sent to the terminal device; or, the parameters obtained from the second configuration information and the identifier of the first multicast service included in the first message are in accordance with
  • the message formats corresponding to the first configuration information are encapsulated together to obtain the first configuration information, and the first configuration information is sent to the terminal device.
  • the second configuration information includes the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identifier of the serving cell corresponding to the first multicast service.
  • the first network device obtains the first multicast service. 2.
  • the configuration information includes the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identifier of the serving cell corresponding to the first multicast service, and the acquired parameters are in accordance with the message format corresponding to the first configuration information
  • the first configuration information is obtained by packaging together, and the first configuration information is sent to the network device.
  • step 402 The process of sending the first configuration information by the first network device to the terminal device is as described in step 402, which is not repeated here.
  • FIG. 6 is described by taking the terminal device requesting the first multicast service and the second network device configuring the configuration information related to the first multicast service for the terminal device as an example.
  • the first network device A request is made to the second network device to provide multiple multicast services for the terminal device.
  • the second network device determines to provide multiple multicast services for the terminal device, it configures the configuration information related to the multiple multicast services and passes the first The network device sends to the terminal device.
  • the first network device can request the second network device to assist in sending a multicast service to the terminal device, and before the second network device sends the multicast service to the terminal device, it will send information related to the multicast service
  • the configuration information is configured to the terminal equipment so that the terminal equipment can use the corresponding RNTI to receive the multicast service in the designated serving cell according to the configuration information related to the multicast service, without the terminal equipment applying the corresponding RNTI blind detection on all cells
  • the PDCCH is used to schedule the multicast service to reduce the power consumption of the terminal equipment in detecting the PDCCH in the CA scenario and receiving the multicast service at the time-frequency resource position indicated by the detected PDCCH.
  • the first configuration information needs to be updated.
  • the method further includes: the first network device obtains the third configuration information used to update the first configuration information, and sends the third configuration information to the terminal device. Configuration information.
  • the third configuration information is used to update the first configuration information.
  • the third configuration information may include the identity of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identity of the serving cell corresponding to the first multicast service. For example, it may include the identifier of the first multicast service and the cell identifier of the serving cell corresponding to the first multicast service; or, it may include the identifier of the first multicast service and the identifier of the first multicast service.
  • RNTI or, including the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identifier of the serving cell corresponding to the first multicast service, etc., which are not limited.
  • the RNTI corresponding to the first multicast service included in the third configuration information is different from the RNTI corresponding to the first multicast service included in the first configuration information, and/or the serving cell corresponding to the first multicast service included in the third configuration information
  • the cell identifier of is different from the cell identifier of the serving cell corresponding to the first multicast service included in the first configuration information.
  • the third configuration information acquired by the first network device and the third configuration information sent by the first network device to the terminal device are not limited to be exactly the same information, and the first network device acquires
  • the parameters included in the third configuration information of the first network device may be the same as those included in the third configuration information sent by the first network device to the terminal device, but the format of the third configuration information obtained by the first network device is the same as that of the first network device to the terminal device.
  • the format of the third configuration information sent may be different, and the position of the same parameter in the third configuration information obtained by the first network device is different from the position in the third configuration information sent by the first network device to the terminal device. of.
  • both configuration information 1 and configuration information 2 may include services
  • the identity of the cell, RNTI, but the identity of the serving cell can be located in the bit field from the first to the eighth bit of the configuration information 1, and located in the bit field from the sixth to the 13th bit of the configuration information 2.
  • the RNTI may be located in the bit field from the 9th bit to the 13th bit of the configuration information 1, and located in the bit field from the first bit to the 5th bit of the configuration information 2.
  • the first network device when the terminal device is working in the DC mode, the first network device may obtain the third configuration information from the second network device; when the terminal device is working in the non-DC mode, the first network device may generate the third configuration information by itself.
  • the terminal device updates the first configuration information according to the third configuration information. For example, when the third configuration information includes the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the first When the cell identity of the serving cell corresponding to the multicast service is used, the first configuration information may be replaced with the third configuration information. Or, when the third configuration information includes the identifier of the first multicast service and the RNTI corresponding to the first multicast service, the RNTI corresponding to the first multicast service included in the first configuration information may be replaced with the RNTI included in the third configuration information. RNTI corresponding to the first multicast service.
  • the terminal device may receive the multicast service according to the updated first configuration information.
  • the first configuration information includes ⁇ multicast service 1, RNTI1, Serving cell 1 ⁇ , when the RNTI corresponding to multicast service 1 is switched to RNTI2, and the serving cell used to transmit multicast service 1 is still serving cell 1, the first network device can obtain the third configuration information ⁇ multicast service 1 , RNTI2 ⁇ or the third configuration information ⁇ multicast service 1, RNTI2, serving cell 1 ⁇ , and send the acquired third configuration information to the terminal device.
  • the terminal device After receiving the third configuration information, the terminal device can configure the first configuration information
  • the information is updated to ⁇ multicast service 1, RNTI2, serving cell 1 ⁇ .
  • RNTI2 is used on serving cell 1 to detect the PDCCH used to schedule multicast service 1.
  • the method may also The method includes: the first network device sends second indication information used to indicate that the first configuration information is invalid to the terminal device.
  • the terminal device may also delete the first configuration information to reduce storage resources occupied by the configuration information and release transmission resources.
  • the first network device may send the second instruction information to the terminal device according to the first instruction information after receiving the first instruction information from the second network device.
  • the first network device may send to the terminal device second indication information for indicating that the first configuration information is invalid when it determines to stop sending the first multicast service to the terminal device.
  • the first configuration information includes ⁇ multicast service 1.
  • the first network device may send the indication information that the first configuration information is invalid to the terminal device, and the terminal device receives the instruction information After the configuration information indicating that the first configuration information is invalid, the first configuration information ⁇ multicast service 1, RNTI1, serving cell 1 ⁇ is deleted, and RNTI1 is no longer used to detect the PDCCH used to schedule the multicast service 1 in the serving cell 1.
  • the terminal device can delete the updated first configuration information.
  • the first configuration information includes the identity of the serving cell corresponding to the first multicast service, the identity of the first multicast service, and the RNTI corresponding to the first multicast service as an example.
  • the method shown in Figure 4 is described in detail.
  • FIG. 7 is a flowchart of another multicast service transmission method provided by an embodiment of the application. As shown in FIG. 7, the method includes steps 701 to 713:
  • Step 701 The first network device determines that the terminal device requires the first multicast service.
  • the first network device may receive a request message for the terminal device to request the first multicast service, and determine according to the request message that the terminal device requires the first multicast service.
  • this step 701 is an optional step. When the multicast service transmission method provided in the embodiment of the present application is executed, this step 701 may not be executed.
  • Step 702 The first network device sends the first information to the second network device.
  • step 702 For the related description of the first information and step 702, please refer to the description of step 601, which will not be repeated.
  • Step 703 The second network device receives the first information, sends second configuration information to the first network device, and sends the first multicast service to the terminal device according to the second configuration information.
  • step 602 For the related description of the second configuration information and the second network device sending the second configuration information to the first network device, reference may be made to step 602, which will not be repeated.
  • the second network device sending the first multicast service to the terminal device according to the second configuration information may include: the second network device applies the RNTI corresponding to the first multicast service to scramble the PDCCH used to schedule the first multicast service Send the scrambled PDCCH to the terminal device on the serving cell corresponding to the first multicast service, and send the first multicast service to the terminal device at the time-frequency resource location indicated by the PDCCH.
  • Step 704 The first network device receives the second configuration information, and determines the first configuration information according to the second configuration information.
  • step 704 can be referred to as described in step 603, which will not be repeated.
  • Step 705 The first network device sends the first configuration information to the terminal device.
  • step 705 can refer to the description of step 402, which will not be repeated.
  • Step 706 The terminal device receives the first configuration information, and receives the first multicast service according to the first configuration information.
  • step 706 can refer to the description of step 403, which will not be repeated.
  • the method shown in FIG. 7 may further include:
  • Step 707 The second network device sends third configuration information to the first network device.
  • step 707 For the related description of the third configuration information and the specific implementation of step 707, please refer to the second possible implementation manner shown in FIG. 4, which will not be repeated.
  • Step 708 The first network device receives the third configuration information, and sends the third configuration information to the terminal device.
  • Step 709 The terminal device receives the third configuration information, updates the first configuration information according to the third configuration information, and receives the first multicast service according to the updated first configuration information.
  • step 707 to step 709 are optional steps.
  • step 707 to step 709 may not be executed.
  • the method shown in FIG. 7 may further include:
  • Step 710 The second network device stops sending the first multicast service.
  • Step 711 The second network device sends the first indication information to the first network device.
  • Step 712 The first network device receives the first indication information, and sends second indication information to the terminal device according to the first indication information.
  • Step 713 The terminal device receives the second instruction information, and deletes the first configuration information/updated first configuration information according to the second instruction information.
  • step 710 to step 713 are optional steps.
  • step 710 to step 713 may not be performed.
  • the first network device can request the second network device to assist in sending multicast services to the terminal device, and before the second network device sends the multicast service to the terminal device ,
  • the second network device configures the configuration information related to the multicast service to the terminal device through the first network device, and the terminal device configures the service corresponding to the specified first multicast service according to the configuration information related to the multicast service
  • the corresponding RNTI is applied on the cell to detect the PDCCH used to schedule the multicast service, and the multicast service is received at the time-frequency resource position indicated by the detected PDCCH, without the need for terminal equipment to apply the corresponding RNTI blind detection PDCCH on all cells, reducing the number of terminals
  • the device detects the PDCCH in the CA scenario, and receives the power consumption of the multicast service according to the PDCCH.
  • the second network device updates the configuration information related to the first multicast service in time, and notifies the terminal device of the updated configuration information so that the terminal device can receive the multicast service according to the updated configuration information to ensure that the multicast service is received. accuracy.
  • the terminal equipment is notified that the configuration information related to the multicast service is invalid, the configuration information related to the multicast service is deleted, and the corresponding RNTI detection is not applied to the serving cell indicated by the configuration information for scheduling multiple broadcasts. Broadcast the PDCCH of the service, and release the PDCCH transmission resources.
  • each communication device such as a terminal device, a first network device, and a second network device, to implement the above-mentioned functions, includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the embodiment of the present application can divide the terminal device, the first network device, and the second network device into functional modules according to the above method examples.
  • each functional module can be divided corresponding to each function, or two or more functions can be divided.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 8 shows a structural diagram of a communication device 80.
  • the communication device 80 may be a first network device or a chip or a system on a chip in the first network device.
  • the apparatus 80 may be used to execute the function of the first network device involved in the above-mentioned embodiment.
  • the communication device 80 shown in FIG. 8 includes: a processing unit 801 and a sending unit 802.
  • the processing unit 801 is configured to determine the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information used to instruct the terminal device to receive the first multicast service: the identity of the first multicast service , The first configuration information of the RNTI corresponding to the first multicast service.
  • the processing unit 801 may support the communication device 80 to perform steps 401 and 704.
  • the sending unit 802 is configured to send the first configuration information to the terminal device.
  • the sending unit 802 may support the communication device 80 to perform step 402, step 603, and step 705.
  • the specific implementation of the communication device may refer to the behavior function of the first network device in the methods shown in FIG. 4 to FIG. 7.
  • the processing unit 801 in FIG. 8 may be replaced by a processor, and the processor may integrate the functions of the processing unit 801.
  • the sending unit 802 in FIG. 8 can be replaced by a transceiver, which can integrate the functions of the sending unit 802.
  • the communication device 80 shown in FIG. 8 may also include a memory.
  • the processing unit 801 in FIG. 8 is replaced by a processor, and the sending unit 802 is replaced by a transceiver, the communication device 80 involved in the embodiment of the present application may be the communication device 300 shown in FIG. 3.
  • FIG. 9 shows a structural diagram of a communication device 90.
  • the communication device 90 may be a terminal device or a chip or a system on a chip in the terminal device.
  • the communication device 90 may be used to perform the functions of the terminal device involved in the foregoing embodiments.
  • the communication device 90 shown in FIG. 9 includes: a receiving unit 901 and a processing unit 902;
  • the receiving unit 901 is configured to receive the cell identity of the serving cell corresponding to the first multicast service and one or more of the following information from the first network device: the identity of the first multicast service, and the first multicast service correspondence The first configuration information of the RNTI.
  • the receiving unit 901 supports the communication device 90 to perform the actions of receiving the first configuration information described in step 403 and step 706.
  • the processing unit 902 is configured to receive the first multicast service through the receiving unit 901 according to the first configuration information. For example, the processing unit 902 may perform the action of receiving the first multicast service described in step 403 and step 706.
  • the specific implementation of the communication device 90 can refer to the behavior function of the terminal device in the methods of FIGS. 4 to 7.
  • the receiving unit 901 in FIG. 9 may be replaced by a transceiver or a transceiver unit, and the transceiver may integrate the functions of the receiving unit 901.
  • the processing unit 902 in FIG. 9 may be replaced by a processor, and the processor may integrate the functions of the processing unit 902.
  • the communication device 90 shown in FIG. 9 may also include a memory.
  • the receiving unit 901 is replaced by a transceiver or a transceiving unit, and the processing unit 902 is replaced by a processor
  • the communication device 90 involved in the embodiment of the present application may be the communication device 300 shown in FIG. 3.
  • FIG. 10 shows a structural diagram of a communication device 100.
  • the communication device 100 may be a second network device or a chip or a system on a chip in the second network device.
  • the communication device 100 may be used to execute the first step involved in the above-mentioned embodiment. 2.
  • the communication device 100 shown in FIG. 10 includes: a receiving unit 1001 and a sending unit 1002;
  • the receiving unit 1001 is configured to receive first information including the identification of the terminal device and the identification of the first multicast service from the first network device, and is used to indicate that the terminal device needs to receive the first multicast service.
  • the receiving unit 1001 may support the communication device 100 to perform the actions of receiving the first information described in step 602 and step 703.
  • the sending unit 1002 is configured to send second configuration information including the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the cell identifier of the serving cell corresponding to the first multicast service to the first network device.
  • the sending unit 1002 may support the communication device 100 to perform the actions of sending the second configuration information described in step 602 and step 703.
  • the specific implementation of the communication device 100 can refer to the behavior function of the second network device in the methods of FIGS. 4 to 7.
  • the receiving unit 1001 and the sending unit 1002 in FIG. 10 can be replaced by a transceiver or a transceiver unit, and the transceiver can integrate the functions of the receiving unit 1001 and the sending unit 1002.
  • the communication device 100 shown in FIG. 10 may also include a processor and a memory.
  • the communication device 100 involved in the embodiment of the present application may be the communication device 300 shown in FIG. 3.
  • FIG. 11 is a structural diagram of a communication system provided by an embodiment of the application.
  • the system may include: a terminal device 110 and a network device 111.
  • the terminal device 110 works in a non-DC mode, that is, the terminal device 110 accesses a network device.
  • the terminal device 110 has the function of the communication device 90 shown in FIG. 9, and the network device 111 may have the function of the communication device 80 shown in FIG. 8.
  • the network device 111 is used to determine the cell identifier of the serving cell corresponding to the first multicast service and one or more of the following information used to instruct the terminal device 110 to receive the first multicast service: The service identifier, the first configuration information of the RNTI corresponding to the first multicast service, and the first configuration information is sent to the terminal device 110.
  • the terminal device 110 is configured to receive first configuration information, and receive the first multicast service according to the first configuration information.
  • the specific implementation of the terminal device 110 can refer to the behavior function of the terminal device in the methods of FIG. 4 to FIG. 7.
  • the specific implementation of the network device 111 refer to the behavior function of the first network device in the methods of FIGS. 4-7.
  • FIG. 12 is a structural diagram of a communication system provided by an embodiment of the application.
  • the system may include: a terminal device 120, a network device 121, and a network device 122.
  • the terminal device 120 can work in the DC mode.
  • the network device 12 may send configuration information related to the multicast service to the terminal device 120 through the network device 121, and apply the corresponding RNTI to scramble the PDCCH used for scheduling the multicast service, and send the scrambled PDCCH to the terminal device And sending the multicast service to the terminal device at the time-frequency resource location indicated by the PDCCH.
  • the terminal device can use the configuration information to apply the corresponding RNTI to detect the PDCCH on the designated serving cell, and receive the multicast service sent by the network device 122 at the time-frequency resource location indicated by the detected PDCCH.
  • the path for the network device 122 to transmit the multicast service to the terminal device 120 may be as shown by the dotted line in FIG. 12.
  • the terminal device 120 has the function of the communication device 90 shown in FIG. 9, and the network device 121 may have the function of the communication device 80 shown in FIG. 8.
  • the network device 122 has the function of the communication device 100 shown in FIG. 10.
  • the network device 121 is configured to send to the network device 122 the first information that the terminal device 120 needs to receive the first multicast service and includes the identifier of the first multicast service and the identifier of the terminal device 120.
  • the network device 122 is configured to receive the first information, determine to provide the first multicast service for the terminal device 120, and send to the network device 121 the identifier of the first multicast service, the RNTI corresponding to the first multicast service, and the first multicast
  • the first configuration information of the cell identifier of the serving cell corresponding to the service, and the second configuration information is sent to the terminal device 120.
  • the network device 121 is further configured to receive second configuration information, and according to the second configuration information, send to the terminal device 120 the identifier including the first multicast service and the first multicast service for instructing the terminal device 120 to receive the first multicast service.
  • the terminal device 120 is configured to receive first configuration information, and receive the first multicast service according to the first configuration information.
  • the specific implementation of the terminal device 120 can refer to the behavior function of the terminal device in the methods of FIGS. 4 to 7.
  • the network device 121 refer to the behavior function of the first network device in the methods of FIGS. 4-7.
  • the network device 122 refer to the behavior function of the second network device in the methods of FIGS. 4-7.
  • the embodiment of the present application also provides a computer-readable storage medium. All or part of the processes in the foregoing method embodiments may be completed by a computer program instructing relevant hardware.
  • the program may be stored in the foregoing computer-readable storage medium. When the program is executed, it may include processes as in the foregoing method embodiments. .
  • the computer-readable storage medium may be an internal storage unit of the communication device (including the data sending end and/or the data receiving end) of any of the foregoing embodiments, such as the hard disk or memory of the communication device.
  • the computer-readable storage medium may also be an external storage device of the communication device, such as a plug-in hard disk, a smart media card (SMC), or a secure digital (SD) card equipped on the communication device. Flash card, etc.
  • the aforementioned computer-readable storage medium may also include both an internal storage unit of the aforementioned communication device and an external storage device.
  • the aforementioned computer-readable storage medium is used to store the aforementioned computer program and other programs and data required by the aforementioned communication device.
  • the aforementioned computer-readable storage medium can also be used to temporarily store data that has been output or will be output.
  • At least one (item) refers to one or more
  • “multiple” refers to two or more than two
  • “at least two (item)” refers to two or three And three or more
  • "and/or” is used to describe the association relationship of the associated objects, indicating that there can be three kinds of relationships, for example, "A and/or B” can mean: there is only A, only B and A at the same time And B three cases, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • At least one item (a) refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ", where a, b, and c can be single or multiple.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another device, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate parts may or may not be physically separate.
  • the parts displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of a software product, and the software product is stored in a storage medium.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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Abstract

本申请实施例公开一种多播业务传输方法及装置，涉及通信技术领域，尤其适用于载波聚合和双连接场景。所述方法包括：第一网络设备向终端设备发送第一配置信息，所述第一配置信息包括第一多播业务对应的服务小区的小区标识、以及第一多播业务的标识和/或第一多播业务对应的RNTI的第一配置信息终端设备接收第一配置信息，在第一配置信息对应的第一区域接收第一多播业务，进而减少了终端设备接收多播业务时的功率消耗。

Description

一种多播业务传输方法及装置 技术领域
本申请实施例涉及通信技术领域，尤其涉及一种多播业务传输方法及装置。
背景技术
为有效地利用移动通信网络资源，第三代合作伙伴计划(3rd generation partnership project，3GPP)网络中引入多媒体广播多播业务(multimedia broadcast multicast service，MBMS)。例如，网络设备可以在一个或者多个小区上向多个终端设备发送MBMS，多个终端设备可以在该一个或者多个小区上接收MBMS。如此，实现从一个业务源向多个终端设备的点到多点的业务传输。
其中，发送MBMS的技术可以包括：多播/广播单频网络(multicast broadcast single frequency network，MBSFN)技术、单小区-点到多点(single-cell point-to-multipoint，SC-PTM)技术。其中，以SC-PTM技术为例，将MBMS与一个分组无线网络临时标识(group radio network temporary identifier，G-RNTI)关联起来，当某个小区内的终端设备需要MBMS时，网络设备可以采用该MBMS对应的G-RNTI对用于调度MBMS的物理下行控制信道(physical downlink control channel，PDCCH)进行加扰，并在该小区/该小区对应的成员载波(component carrier，CC)上将加扰后的PDCCH发送给多个终端设备，在终端设备侧，每个终端设备可以应用G-RNTI检测并接收该小区上发送的PDCCH，根据PDCCH接收MBMS。
目前，为增加传输带宽，3GPP引入载波聚合(carrier aggregation，CA)技术，CA技术可以将两个或者两个以上的CC聚合在一起，网络设备可以通过聚合的多个CC发送内容相同的业务。例如，网络设备在采用SC-PTM技术发送MBMS时，网络设备可以应用CA技术，通过多个CC中的某些CC向终端设备发送加扰后的PDCCH，而在终端设备侧，终端设备并不知道网络设备采用哪些CC发送PDCCH，终端设备需要应用该MBMS对应的G-RNTI在所有CC上检测PDCCH，根据检测到的PDCCH接收MBMS。因此，终端设备的功率消耗过大。
发明内容
本申请实施例提供一种多播业务传输方法及装置，减少终端设备在CA场景下接收多播业务的功率消耗。
为达到上述目的，本申请实施例采用如下技术方案：
第一方面，本申请实施例提供一种多播业务传输方法，所述方法应用于第一网络设备，所述方法包括：确定用于指示终端设备接收第一多播业务、包括第一多播业务对应的服务小区的小区标识以及下述一种或多种信息：第一多播业务的标识、第一多播业务对应的无线网络临时标识(radio network temporary identifier，RNTI)的第一配置信息，向终端设备发送第一配置信息。
通过应用第一方面提供的方法，第一网络设备可以确定多播业务相关的配置信息，如：多播业务对应的RNTI和/或多播业务的标识以及第一多播业务对应的服务小区的小区标识， 并将多播业务相关的配置信息通知给终端设备，以便终端设备根据多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI接收多播业务，无需终端设备在所有服务小区上应用RNTI盲检用于调度多播业务的PDCCH，并根据检测到的PDCCH接收多播业务，减少终端设备在CA场景下接收多播业务的功率消耗。
一种可能的设计中，结合第一方面，小区标识为服务小区的物理小区标识(physical cell identifier，PCI)，或者，小区标识为服务小区在终端设备的服务小区集合中的编号，或者，小区标识为服务小区的小区全球标识，如：CGI(cell global identifier)或者演进的小区全局标识(evolved cell global identifier，ECGI)。
通过应用该可能的设计，可以通过PCI或者编号或者小区全球标识一个服务小区，提高服务小区的小区标识的多样性和灵活性。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，第一配置信息还包括第一多播业务的传输资源的标识。
通过应用该可能的设计，可以将多播业务的传输资源的标识包括在配置信息中通知终端设备，以便终端设备在该传输资源的标识所指示的传输资源上接收多播业务，即在具体的传输资源上接收多播业务，无需在服务小区的所有传输资源上盲检多播业务，减少终端设备在CA场景下接收多播业务的功率消耗。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，所述方法还包括：向第二网络设备发送包括终端设备的标识和第一多播业务的标识的、用于指示终端设备需要接收第一多播业务的第一信息。
通过应用该可能的设计，第一网络设备可以将终端设备的标识和第一多播业务的标识通知给第二网络设备，以便第二网络设备获知终端设备需要接收第一多播业务，并在第二网络设备确定向终端设备发送第一多播业务后，将与第一多播业务相关的配置信息通过第一网络设备配置给终端设备。如此，可以实现由第二网络设备向终端设备发送多播业务，无需第一网络设备向终端设备发送多播业务，降低第一网络设备发送多播业务的压力。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，第一信息包括于辅小区组添加请求消息中。
通过应用该可能的设计，第一网络设备可以将第一信息包括在辅小区组添加请求消息中发送给第二网络设备，即通过现有的辅小区组添加过程向第二网络设备发送第一信息，无需通过新增信令将第一信息发送给第二网络设备，降低信令开销。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，所述方法还包括：接收来自第二网络设备的包括第二配置信息的辅小区组添加响应消息，第二配置信息包括第一多播业务的标识，RNTI，以及第一多播业务对应的服务小区的小区标识。
通过应用该可能的设计，第一网络设备可以通过现有的辅小区组添加过程接收第二网络设备配置的发送多播业务的配置信息，无需通过新增信令接收第二网络设备发送的配置信息，降低信令开销。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，所述方法还包括：接收来自第二网络设备的用于更新第一配置信息的第三配置信息，向终端设备发送第三配置信息。
通过应用该可能的设计，第一网络设备可以接收来自第二网络设备的更新后的配置信 息，并将更新后的配置信息发送给终端设备，以便终端设备根据更新后的配置信息接收多播业务，如此，及时更新与多播业务相关的配置信息，保证终端设备接收多播业务的准确性。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，所述方法还包括：接收来自第二网络设备的用于指示第二网络设备停止发送第一多播业务的第一指示信息。
通过应用该可能的设计，第一网络设备可以接收来自第二网络设备的用于指示停止发送第一多播业务的指示信息，以便第一网络设备获知多播业务停止发送，无需再接收/检测该多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
一种可能的设计中，结合第一方面或者第一方面的任一可能的设计，所述方法还包括：向终端设备发送用于指示第一配置信息失效的第二指示信息。
通过应用该可能的设计，第一网络设备可以向终端设备发送第一配置信息失效的指示信息，以便终端设备根据该指示信息确定第一配置信息失效，无需根据第一配置信息接收多播业务，避免传输资源浪费以及减少终端设备检测多播业务的功率消耗。
第二方面，本申请实施例提供一种通信装置，该通信装置可以为第一网络设备或者第一网络设备中的芯片或者片上系统，还可以为第一网络设备中用于实现第一方面或第一方面的任一可能的设计所述的方法的功能模块。该通信装置可以实现上述第一方面或者第一方面的可能的设计中第一网络设备所执行的功能，所述功能可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。如：该通信装置包括处理单元、发送单元。
处理单元，用于确定用于指示终端设备接收第一多播业务的、包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI的第一配置信息。
发送单元，用于向终端设备发送第一配置信息。
其中，该通信装置的具体实现方式可参考第一方面或第一方面的任一种可能的设计提供的多播业务传输方法中网络设备的行为功能。通过应用第二方面所述的通信装置可以确定多播业务相关的配置信息，如：多播业务对应的RNTI和/或多播业务的标识以及第一多播业务对应的服务小区，并将多播业务相关的配置信息通知给终端设备，以便终端设备根据多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI接收多播业务，无需终端设备在所有服务小区上应用RNTI盲检用于调度多播业务的PDCCH，并根据检测到的PDCCH接收多播业务，减少终端设备在CA场景下检测并接收多播业务的功率消耗。
一种可能的设计中，结合第二方面，小区标识为服务小区的PCI，或者，小区标识为服务小区在终端设备的服务小区集合中的编号，或者，小区标识为服务小区的小区全球标识，如：CGI或者ECGI。
通过应用该可能的设计，该通信装置可以通过PCI或者编号或者小区全球标识一个服务小区，提高服务小区的小区标识的多样性和灵活性。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，第一配置信息还包括第一多播业务的传输资源的标识。
通过应用该可能的设计，该通信装置可以将多播业务的传输资源的标识包括在配置信息中通知终端设备，以便终端设备在该传输资源的标识所指示的传输资源上接收多播业务， 即在具体的传输资源上接收多播业务，而无需在服务小区的所有传输资源上进行盲检，减少终端设备在CA场景下接收多播业务的功率消耗。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，所述发送单元，还用于向第二网络设备发送包括终端设备的标识和第一多播业务的标识的、用于指示终端设备需要接收第一多播业务的第一信息。
通过应用该可能的设计，该通信装置可以将终端设备的标识和第一多播业务的标识通知给第二网络设备，以便第二网络设备获知终端设备需要接收第一多播业务，并在第二网络设备确定向终端设备发送第一多播业务后，将与第一多播业务相关的配置信息通过该通信装置配置给终端设备。如此，可以实现由第二网络设备向终端设备发送多播业务，无需该通信装置向终端设备发送多播业务，降低该通信装置发送多播业务的压力。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，第一信息包括于辅小区组添加请求消息中。
通过应用该可能的设计，该通信装置可以将第一信息包括在辅小区组添加请求消息中发送给第二网络设备，即通过现有的辅小区组添加过程向第二网络设备发送第一信息，无需通过新增信令将第一信息发送给第二网络设备，降低信令开销。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，所述方法还包括：接收来自第二网络设备的包括第二配置信息的辅小区组添加响应消息，第二配置信息包括第一多播业务的标识，RNTI，以及第一多播业务对应的服务小区的小区标识。
通过应用该可能的设计，该通信装置可以通过现有的辅小区组添加过程接收第二网络设备配置的发送多播业务的配置信息，无需通过新增信令接收第二网络设备发送的配置信息，降低信令开销。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，所述方法还包括：接收来自第二网络设备的用于更新第一配置信息的第三配置信息，向终端设备发送第三配置信息。
通过应用该可能的设计，该通信装置可以接收来自第二网络设备的更新后的配置信息，并将更新后的配置信息发送给终端设备，以便终端设备根据更新后的配置信息接收多播业务，如此，及时更新与多播业务相关的配置信息，保证终端设备接收多播业务的准确性。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，所述方法还包括：接收来自第二网络设备的用于指示第二网络设备停止发送第一多播业务的第一指示信息。
通过应用该可能的设计，该通信装置可以接收来自第二网络设备的用于指示停止发送第一多播业务的指示信息，以便该通信装置获知多播业务停止发送，无需再接收/检测该多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
一种可能的设计中，结合第二方面或者第二方面的任一可能的设计，所述方法还包括：向终端设备发送用于指示第一配置信息失效的第二指示信息。
通过应用该可能的设计，该通信装置可以向终端设备发送第一配置信息失效的指示信息，以便终端设备根据该指示信息确定第一配置信息失效，无需根据第一配置信息接收多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
第三方面，提供一种通信装置，该通信装置可以为第一网络设备或者第一网络设备中的芯片或者片上系统。该通信装置可以实现上述第一方面或者第一方面可能的设计中第一 网络设备所执行的功能，所述功能可以通过硬件实现，如：一种可能的设计中，该通信装置可以包括：处理器和收发器。处理器用于确定用于指示终端设备接收第一多播业务的、包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务的第一配置信息，并通过收发器向终端设备发送第一配置信息。在又一种可能的设计中，所述通信装置还可以包括存储器，所述存储器，用于保存通信装置必要的计算机执行指令和数据。当该通信装置运行时，该处理器执行存储器存储的该计算机执行指令，以使该通信装置执行第一方面或者第一方面的任一种可能的设计所述的多播业务传输方法。
第四方面，提供一种计算机可读存储介质，该计算机可读存储介质可以为可读的非易失性存储介质，该计算机可读存储介质存储有计算机指令或者程序，当其在计算机上运行时，使得计算机执行第一方面或上述方面的任一种可能的设计所述的多播业务传输方法。
第五方面，提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面或者上述方面的任一种可能的设计所述的多播业务传输方法。
第六方面，提供一种通信装置，该通信装置可以为第一网络设备或者第一网络设备中的芯片或者片上系统，该通信装置包括一个或者多个处理器以及和一个或多个存储器。所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器用于存储计算机程序代码，所述计算机程序代码包括计算机指令，当所述一个或多个处理器执行所述计算机指令时，使得所述通信装置执行上述第一方面或第一方面的任一可能的设计的多播业务传输方法。
第七方面，提供一种芯片系统，所述芯片系统包括一个或多个处理器和通信接口，一个或者多个处理器和通信接口可以支持该芯片系统执行第一方面或第一方面的任一可能的设计所述的多播业务传输方法。进一步，该芯片系统还可以包括一个或多个存储器，一个或多个存储器与一个或多个处理器耦合，一个或多个存储器中存储有计算机程序代码或计算机指令；当一个或多个处理器执行所述计算机程序代码或计算机指令时，使得所述芯片系统执行第一方面或第一方面的任一可能的设计所述的多播业务传输方法。
其中，第三方面至第七方面中任一种设计方式的技术效果可参见上述第一方面或者第一方面的任一种可能的设计的技术效果，不再赘述。
第八方面，本申请实施例又提供一种多播业务传输方法，所述方法应用于终端设备，所述方法包括：接收来自第一网络设备的包括第一多播业务的标识、第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识的第一配置信息，根据第一配置信息，接收第一多播业务。
通过应用第八方面提供的方法，终端设备可以接收多播业务相关的配置信息，如：多播业务对应的RNTI和/或多播业务的标识以及第一多播业务对应的服务小区的小区标识，根据多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI接收多播业务，无需终端设备在所有服务小区上应用RNTI盲检用于调度多播业务的PDCCH，并根据检测到的PDCCH接收多播业务，减少终端设备在CA场景下检测并接收多播业务的功率消耗。
一种可能的设计中，结合第八方面，小区标识为服务小区的PCI，或者，小区标识为服务小区在终端设备的服务小区集合中的编号，或者，小区标识为服务小区的小区全球标识，如：CGI或者ECGI。
通过应用该可能的设计，可以通过PCI或者编号或者小区全球标识一个服务小区，提高服务小区的小区标识的多样性和灵活性。
一种可能的设计中，结合第八方面或者第八方面的任一可能的设计，第一配置信息还包括第一多播业务的传输资源的标识。
通过应用该可能的设计，终端设备可以接收包括有多播业务的传输资源的标识的配置信息，在该传输资源的标识所指示的传输资源上接收多播业务，即在具体的传输资源上接收多播业务，而无需在服务小区的所有传输资源上盲检多播业务，减少终端设备在CA场景下接收多播业务的功率消耗。
一种可能的设计中，结合第八方面或者第八方面的任一可能的设计，所述方法还包括：接收来自第一网络设备的用于更新第一配置信息的第三配置信息。
通过应用该可能的设计，终端设备可以接收来自第一网络设备的更新后的配置信息，根据更新后的配置信息接收多播业务。如此，及时更新与多播业务相关的配置信息，保证终端设备接收多播业务的准确性。
一种可能的设计中，结合第八方面或者第八方面的任一可能的设计，所述方法还包括：接收来自第一网络设备的第二指示信息；第二指示信息用于指示第一配置信息失效。
通过应用该可能的设计，终端设备可以根据第一网络设备发送的用于指示第一配置信息失效的指示信息，确定第一配置信息失效，不再根据第一配置信息接收多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
第九方面，本申请提供一种通信装置，该通信装置可以为终端设备或者终端设备中的芯片或者片上系统，还可以为终端设备中用于实现第八方面或第八方面的任一可能的设计所述的方法的功能模块。该通信装置可以实现上述第八方面或者第八可能的设计中终端设备所执行的功能，所述功能可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。如：该通信装置可以包括：接收单元，处理单元；
接收单元，用于接收来自第一网络设备的包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI的第一配置信息；
处理单元，用于根据第一配置信息，通过接收单元接收第一多播业务。
通过应用第九方面所述的方法，该通信装置可以接收多播业务相关的配置信息，如：多播业务对应的RNTI和/或多播业务的标识以及第一多播业务对应的服务小区，根据多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI接收多播业务，无需该通信装置在所有服务小区上应用RNTI盲检用于调度多播业务的PDCCH，并根据检测到的PDCCH接收多播业务，减少该通信装置在CA场景下检测并接收多播业务的功率消耗。
一种可能的设计中，结合第九方面，小区标识为服务小区的PCI，或者，小区标识为服务小区在该通信装置的服务小区集合中的编号，或者，小区标识为服务小区的小区全球标识，如：CGI或者ECGI。
通过应用该可能的设计，可以通过PCI或者编号或者小区全球标识一个服务小区，提高服务小区的小区标识的多样性和灵活性。
一种可能的设计中，结合第九方面或者第九方面的任一可能的设计，第一配置信息还包括第一多播业务的传输资源的标识。
通过应用该可能的设计，该通信装置可以接收包括有多播业务的传输资源的标识的配置信息，在该传输资源的标识所指示的传输资源上接收多播业务，即在具体的传输资源上接收多播业务，而无需在服务小区的所有传输资源上盲检多播业务，减少该通信装置在CA场景下接收多播业务的功率消耗。
一种可能的设计中，结合第九方面或者第九方面的任一可能的设计，所述方法还包括：接收来自第一网络设备的用于更新第一配置信息的第三配置信息。
通过应用该可能的设计，该通信装置可以接收来自第一网络设备的更新后的配置信息，根据更新后的配置信息接收多播业务。如此，及时更新与多播业务相关的配置信息，保证该通信装置接收多播业务的准确性。
一种可能的设计中，结合第九方面或者第九方面的任一可能的设计，所述方法还包括：接收来自第一网络设备的第二指示信息；第二指示信息用于指示第一配置信息失效。
通过应用该可能的设计，该通信装置可以根据第一网络设备发送的用于指示第一配置信息失效的指示信息，确定第一配置信息失效，不再根据第一配置信息接收多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
第十方面，提供一种通信装置，该通信装置可以为终端设备或者终端设备中的芯片或者片上系统。该通信装置可以实现上述各方面或者各可能的设计中终端设备所执行的功能，所述功能可以通过硬件实现，如：一种可能的设计中，该通信装置可以包括：处理器和收发器。处理器，通过收发器接收来自第一网络设备的包括第一多播业务对应的服务小区的小区标识以及下述一种多种信息：第一多播业务的标识、第一多播业务对应的RNTI的第一配置信息，并根据第一配置信息，通过收发器接收第一多播业务。在又一种可能的设计中，所述通信装置还可以包括存储器，所述存储器，用于保存通信装置必要的计算机执行指令和数据。当该通信装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该通信装置执行如第八方面或第八方面的任一种可能的设计所述的多播业务传输方法。
第十一方面，提供一种计算机可读存储介质，该计算机可读存储介质可以为可读的非易失性存储介质，该计算机可读存储介质存储有计算机指令，当其在计算机上运行时，使得计算机可执行第八方面或者上述方面的任一种可能的设计所述的多播业务传输方法。
第十二方面，提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行第八方面或者上述方面的任一种可能的设计所述的多播业务传输方法。
第十三方面，提供一种通信装置，该通信装置可以为终端设备或者终端设备中的芯片或者片上系统，该通信装置包括一个或者多个处理器以及和一个或多个存储器。一个或多个存储器与一个或多个处理器耦合，所述一个或多个存储器用于存储计算机程序代码，所述计算机程序代码包括计算机指令，当所述一个或多个处理器执行所述计算机指令时，使得该通信装置执行第八方面或者第八方面的任一可能的设计所述的多播业务传输方法。
第十四方面，提供一种芯片系统，所述芯片系统包括一个或多个处理器和通信接口，一个或多个处理器和通信接口可以支持芯片系统执行第八方面或者第八方面的任一可能的设计所述的多播业务传输方法。进一步的，该芯片系统还可以包括一个或多个存储器；一个或多个存储器与一个或多个处理器耦合，一个或多个存储器中存储有计算机程序代码或计算机指令；当一个或多个处理器执行计算机程序代码或计算机指令时，使得所述芯片系统执行第八方面或者第八方面的任一可能的设计所述的多播业务传输方法。
其中，第九方面至第十四方面中任一种设计方式的技术效果可参见上述第八方面或者第八方面的任一种可能的设计的技术效果，不再赘述。
第十五方面，本申请实施例又提供一种多播业务传输方法，所述方法应用于第二网络设备，包括：接收来自第一网络设备的包括终端设备的标识和第一多播业务的标识、用于指示终端设备需要接收第一多播业务的第一信息，向第一网络设备发送包括第一多播业务的标识、第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识的第二配置信息。
通过应用第十五方面提供的方法，第二网络设备可以接收第一网络设备发送的信息，根据第一网络设备发送的信息为终端设备配置与多播业务相关的配置信息，如：多播业务对应的RNTI以及第一多播业务对应的服务小区，以便终端设备根据多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI接收多播业务，无需终端设备在所有服务小区上应用RNTI盲检用于调度多播业务的PDCCH，并根据检测到的PDCCH接收多播业务，减少终端设备在CA场景下检测并接收多播业务的功率消耗。
一种可能的设计中，结合第十五方面或第十五方面的任一可能的设计，第一信息包括于辅小区组添加请求消息中，第二配置信息包括于辅小区组添加响应消息中。
通过应用该可能的设计，第二网络设备可以通过现有的辅小区组添加过程接收第一网络设备发送第一信息，以及向第一网络设备发送配置信息，即无需通过新增信令与第一网络设备交互，降低信令开销。
一种可能的设计中，结合第十五方面或第十五方面的任一可能的设计，小区标识为服务小区的PCI，或者，小区标识为服务小区在终端设备的服务小区集合中的编号，或者，小区标识为服务小区的小区全球标识，如：CGI或者ECGI。
通过应用该可能的设计，可以通过PCI或者编号或者小区全球标识一个服务小区，提高服务小区的小区标识的多样性和灵活性。
一种可能的设计中，结合第十五方面或第十五方面的任一可能的设计，所述方法还包括：向第一网络设备发送用于更新第一配置信息的第三配置信息。
通过应用该可能的设计，第二网络设备可以向第一网络设备发送更新后的配置信息，并由第一网络设备将更新后的配置信息发送给终端设备，以便终端设备根据更新后的配置信息接收多播业务。如此，及时更新与多播业务相关的配置信息，保证终端设备接收多播业务的准确性。
一种可能的设计中，结合第十五方面或第十五方面的任一可能的设计，所述方法还包括：向第一网络设备发送用于指示第二网络设备停止发送第一多播业务的第一指示信息。
通过应用该可能的设计，第二网络设备可以向第一网络设备发送用于指示停止发送第一多播业务的指示信息，以便第一网络设备获知多播业务停止发送，无需再接收/检测该多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
第十六方面，本申请提供一种通信装置，该通信装置可以为第二网络设备或者第二网络设备中的芯片或者片上系统，还可以为第二网络设备中用于实现第十五方面或第十五方面的任一可能的设计所述的方法的功能模块。该通信装置可以实现上述第十五方面或者第十六方面可能的设计中第二网络设备所执行的功能，所述功能可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。如：该通信装置包括：接 收单元，发送单元；
接收单元，用于接收来自第一网络设备的包括终端设备的标识和第一多播业务的标识、用于指示终端设备需要接收第一多播业务的第一信息；
发送单元，用于向第一网络设备发送包括第一多播业务的标识、第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识的第二配置信息。
通过应用第十六方面提供的方法，该通信装置可以接收第一网络设备发送的信息，根据第一网络设备发送的信息为终端设备配置与多播业务相关的配置信息，如：多播业务对应的RNTI以及第一多播业务对应的服务小区，以便终端设备根据多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI接收多播业务，无需终端设备在所有服务小区上应用RNTI盲检用于调度多播业务的PDCCH，并根据检测到的PDCCH接收多播业务，减少终端设备在CA场景下检测并接收多播业务的功率消耗。
一种可能的设计中，结合第十六方面或第十六方面的任一可能的设计，第一信息包括于辅小区组添加请求消息中，第二配置信息包括于辅小区组添加响应消息中。
通过应用该可能的设计，该通信装置可以通过现有的辅小区组添加过程接收第一网络设备发送第一信息，以及向第一网络设备发送配置信息，即无需通过新增信令与第一网络设备交互，降低信令开销。
一种可能的设计中，结合第十六方面或第十六方面的任一可能的设计，小区标识为服务小区的PCI，或者，小区标识为服务小区在终端设备的服务小区集合中的编号，或者，小区标识为服务小区的小区全球标识，如：CGI或者ECGI。
通过应用该可能的设计，可以通过PCI或者编号或者小区全球标识一个服务小区，提高服务小区的小区标识的多样性和灵活性。
一种可能的设计中，结合第十六方面或第十六方面的任一可能的设计，所述方法还包括：向第一网络设备发送用于更新第一配置信息的第三配置信息。
通过应用该可能的设计，该通信装置可以向第一网络设备发送更新后的配置信息，并由第一网络设备将更新后的配置信息发送给终端设备，以便终端设备根据更新后的配置信息接收多播业务，如此，及时更新与多播业务相关的配置信息，保证终端设备接收多播业务的准确性。
一种可能的设计中，结合第十六方面或第十六方面的任一可能的设计，所述方法还包括：向第一网络设备发送用于指示该通信装置停止发送第一多播业务的第一指示信息。
通过应用该可能的设计，该通信装置可以向第一网络设备发送用于指示停止发送第一多播业务的指示信息，以便第一网络设备获知多播业务停止发送，无需再接收/检测该多播业务，避免传输资源浪费以及减少检测多播业务的功率消耗。
第十七方面，提供一种通信装置，该通信装置可以为第二网络设备或者第二网络设备中的芯片或者片上系统。该通信装置可以实现上述各方面或者各可能的设计中第二网络设备所执行的功能，所述功能可以通过硬件实现，如：一种可能的设计中，该通信装置可以包括：处理器和收发器。处理器用于通过收发器接收来自第一网络设备的包括终端设备的标识和第一多播业务的标识、用于指示终端设备需要接收第一多播业务的第一信息，并通过收发器向第一网络设备发送包括第一多播业务的标识、第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识的第二配置信息。在又一种可能的设计中，所述通 信装置还可以包括存储器，所述存储器，用于保存通信装置必要的计算机执行指令和数据。当该通信装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该通信装置执行如上述第十五方面或者第十五方面的任一种可能的设计所述的多播业务传输方法。
第十八方面，提供一种计算机可读存储介质，该计算机可读存储介质为可读的非易失性存储介质，计算机可读存储介质存储有计算机指令或者程序，当其在计算机上运行时，使得计算机执行第十五方面或第十五方面的任一种可能的设计所述的多播业务传输方法。
第十九方面，提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行第十五方面或第十五方面的任一种可能的设计所述的多播业务传输方法。
第二十方面，提供一种通信装置，该通信装置可以为第二网络设备或者第二网络设备中的芯片或者片上系统，该通信装置包括一个或者多个处理器以及和一个或多个存储器。所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器用于存储计算机程序代码，所述计算机程序代码包括计算机指令，当所述一个或多个处理器执行所述计算机指令时，使得该通信装置执行第十五方面或第十五方面的任一可能的设计的多播业务传输方法。
第二十一方面，提供一种芯片系统，所述芯片系统包括一个或多个处理器和通信接口，一个或者多个处理器和通信接口可以支持该芯片系统执行第一方面或第一方面的任一可能的设计所述的多播业务传输方法。进一步，该芯片系统还可以包括一个或多个存储器；一个或多个存储器与一个或多个处理器耦合，一个或多个存储器中存储有计算机程序代码或计算机指令；当一个或多个处理器执行计算机程序代码或计算机指令时，使得芯片系统执行第十五方面或第十五方面的任一可能的设计所述的多播业务传输方法。
其中，第十七方面至第二十一方面中任一种设计方式的技术效果可参见上述第十五方面或者第十五方面的任一种可能的设计的技术效果，不再赘述。
第二十二方面，本申请实施例提供一种通信系统，该通信系统包括如第二方面至第七方面中任一方面所述的通信装置的第一网络设备、包括如第九方面至第十四方面任一方面所述的通信装置的终端设备；或者，
该通信系统包括如第二方面至第七方面中任一方面所述的通信装置的第一网络设备、包括如第九方面至第十四方面任一方面所述的通信装置的终端设备、以及包括如第十六方面至第二十一方面任一方面所述的通信装置的第二网络设备。
附图说明
图1a为本申请实施例提供的载波聚合场景示意图；
图1b为本申请实施例提供的双连接场景示意图；
图2为本申请实施例提供的一种通信系统的架构图；
图3为本申请实施例提供的一种通信装置的组成示意图；
图4为本申请实施例提供的一种多播业务传输方法的流程图；
图5为本申请实施例提供的多播业务传输示意图；
图6为本申请实施例提供的一种配置流程图；
图7为本申请实施例提供的又一种多播业务传输方法的流程图；
图8为本申请实施例提供的一种通信装置80的组成示意图；
图9为本申请实施例提供的一种通信装置90的组成示意图；
图10为本申请实施例提供的一种通信装置100的组成示意图；
图11为本申请实施例提供的一种通信系统的组成示意图；
图12为本申请实施例提供的又一种通信系统的组成示意图。
具体实施方式
首先，为理解本申请实施例，对本申请实施例涉及的术语进行描述：
载波聚合(carrier aggregation，CA)，是将两个或者两个以上的成员载波(component carrier，CC)聚合在一起形成较大的传输带宽。CA是一种增加传输带宽的技术，它可以有效提高上下行传输速率。例如，如图1a所示，通过CA技术，可以将5个20兆赫兹(MHz)的CC聚合在一起，实现最大100MHz的传输带宽。
其中，一个载波可以称为一个小区(cell)，根据cell上传输的业务类型的不同，可以将cell可以分为主小区(primary cell，Pcell)和辅小区(secondary cell，Scell)。在终端设备具有CA能力时，终端设备可以在Pcell上接收公共信道信息、接入网络等，可以在Scell上进行业务传输等。
由上可知，在CA场景下，终端设备可以支持同时在多个小区上进行业务传输。目前，终端设备支持的多个小区可以由网络设备预配置给终端设备。当网络设备向终端设备发送业务时，网络设备可以从终端设备支持的多个小区中选择出合适的小区，如：空闲小区，应用该小区对应的RNTI对用于调度业务的物理下行控制信道(physical downlink control channel，PDCCH)进行加扰，并在该小区上向终端设备发送PDCCH以及业务。在终端设备侧，因终端设备对网络设备的发送行为是不可知的，终端设备在其支持的所有小区上应用RNTI检测网络设备发送的PDCCH，根据检测到的PDCCH接收网络设备发送的业务，终端设备的功率消耗过大。为解决终端设备的功率消耗过大的问题，本申请实施例中，网络设备将用于发送PDCCH的小区指示给终端设备，以便终端设备在网络设备指示的小区上检测PDCCH，根据检测到的PDCCH接收网络设备发送的业务，减少功率消耗。
需要说明的是，本申请实施例中，网络设备向终端设备发送的业务可以为多播业务，也可以为单播业务，不予限制。多播业务可以为网络设备同时向两个或者两个以上网络设备发送的业务，单播业务可以为网络设备向一个终端设备发送的业务。下述实施例以CA场景下，网络设备向终端设备发送多播业务为例进行说明，CA场景下网络设备向终端设备发送单播业务的过程可参照网络设备向终端设备发送的业务为多播业务的实施方式。
PDCCH，主要用于承载下行控制信息(downlink control information，DCI)，DCI可以包括公共控制信息(如：系统信息等)和用户专属信息(如：下行资源分配指示，上行调度，随机接入响应，上行功率控制参数等)等。PDCCH可以通过其承载的DCI调度网络设备发送的业务，如：DCI可以用于指示网络设备发送的业务的传输参数，如：网络设备发送的业务的时频资源位置等。在网络设备发送业务之前，网络设备应用RNTI对PDCCH进行加扰，并向终端设备发送加扰后的PDCCH，终端设备应用RNTI解调/解扰PDCCH得到DCI，然后在DCI所指示的时频资源位置上接收网络设备发送的业务。
RNTI可以称为无线网络临时标识(radio network tempory identity)。终端设备可以同时对应多个RNTI，通过用RNTI对PDCCH加扰的方式实现系统广播、用户的指定业务调度等功能。RNTI可以与PDCCH调度的业务对应/关联，一个业务可以对应/关联一个RNTI，不同业务对应的RNTI不同。例如，业务1可以对应RNTI1，业务2可以对应RNTI2，业 务3可以对应RNTI3。业务与RNTI之间的对应关系/关联关系可以预先配置在终端设备和/或为终端设备提供业务的网络设备；或者，业务与RNTI之间的对应关系/关联关系由网络设备配置，并由网络设备通过高层信令发送给终端设备，如：网络设备可以将业务与RNTI之间的对应关系/关联关系包括在高层信令中发送给终端设备。目前，按照RNTI对应的业务类型的不同划分了多种RNTI，如：小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)、组无线网络临时标识(group radio network temporary identifier，G-RNTI)，C-RNTI对应单播业务，G-RNTI对应多播业务。其中，C-RNTI可以在终端设备和网络设备之间的信号信息内部作为终端设备的标识，用于标识终端设备。
其中，本申请实施例不限制终端设备在CA场景下的连接模式，终端设备的连接模式可以包括双连接(dual connection，DC)模式和非DC模式。当终端设备工作在DC模式时，应用CA技术向终端设备发送业务的网络设备可以为主网络设备；当终端设备工作在非DC模式时，应用CA技术向终端设备发送业务的网络设备可以为主网络设备，也可以为辅网络设备，不予限制。
DC模式，是指终端设备同时接入到两个网络设备，DC可以在CA的基础上进一步增加传输速率，并且还可以增加传输的可靠性。终端设备连接的两个网络设备可以为主网络设备和辅网络设备，每个网络设备覆盖下的小区可以组成一个CA组，两个网络设备可以看成两个CA组，其中主网络设备覆盖下的CA组可以为主小区组(master cell group，MCG)，MCG可以承载终端设备的控制面和用户面，既可以负责向终端设备发送业务，也可以负责向终端设备发送控制信令。辅网络设备覆盖下的CA组可以称为辅小区组(secondary cell group，SCG)，SCG可以承载终端设备的用户面，可以负责向终端设备发送业务。
例如，如图1b所示，终端设备可以同时接入网络设备1和网络设备2。假设网络设备1覆盖下的小区组成CA组1，网络设备2覆盖下的小区组成CA组2，CA组1为MCG，CA组2为SCG，则网络设备1可以在CA组1上向终端设备发送控制信令以及传输业务，网络设备2可以在CA组2上向终端设备传输业务等。
非DC模式，是指终端设备接入到一个网络设备，由该网络设备为终端设备提供服务。该网络设备可以称为终端设备的主网络设备，负责向终端设备发送控制面信令以及业务。
下面结合说明书附图，以网络设备在CA场景下向终端设备发送多播业务为例，对本申请实施例提供的用于解决CA场景下终端设备功率消耗过大的多播业务传输方法进行详细描述。
本申请实施例提供的多播业务传输方法可用于支持载波聚合(carrier aggregation，CA)以及双连接(dual connection，DC)的通信系统，如：可以适用于第四代(4th generation，4G)系统、长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)系统、新空口(new radio，NR)系统、NR-车与任何事物通信(vehicle-to-everything，V2X)系统中的任一系统，还可以适用于其他下一代通信系统等，不予限制。下面以图2所示通信系统为例，对本申请实施例提供的方法进行描述。
图2是本申请实施例提供的一种通信系统的示意图，如图2所示，该通信系统可以包括多个网络设备以及多个终端设备，如：用户设备(user equipment，UE)。UE可以位于网络设备的覆盖范围内，与网络设备通过Uu口连接。在图2所示系统中，每个网络设备可以覆盖一个或者多个小区，终端设备可以工作在DC模式或者非DC模式，终端设备可 以位于网络设备覆盖的一个或者多个小区中，终端设备可以通过其所在的小区接收网络设备提供的服务或者可以描述为网络设备可以通过其覆盖的小区为终端设备提供服务。本申请实施例中，可以将为终端设备提供服务的小区称为服务小区。例如，如图2所示，网络设备1覆盖小区1.1以及小区1.2，UE1可以位于小区1.1以及小区1.2，可以通过小区1.1以及小区1.2接收网络设备1提供的服务，则小区1.1、小区1.2可以称为UE1的服务小区。网络设备2覆盖小区2.1以及小区2.2，UE2可以位于小区1.1以及小区2.1，可以通过小区1.1接收网络设备1提供的服务，通过小区2.2接收网络设备2提供的服务，则小区1.1、小区2.1可以称为UE2的服务小区。
需要说明的是，图2仅为示例性框架图，图2中包括的网络设备的数量、UE的数量、网络设备覆盖的小区的数量不受限制，各个设备的名称不受限制，且除图2所示功能节点外，还可以包括其他节点，如：核心网设备、网关设备、应用服务器等等，不予限制。
其中，图2中的网络设备主要用于实现终端设备的资源调度、无线资源管理、无线接入控制等功能。具体的，网络设备可以为小型基站、无线接入点、收发点(transmission receive point，TRP)、传输点(transmission point，TP)以及某种其它接入节点中的任一节点。本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统。下面以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的多播业务传输方法。
图2中的UE可以为终端设备(terminal equipment)或者移动台(mobile station，MS)或者移动终端(mobile terminal，MT)等。具体的，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑，还可以是虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、智能家居、车载终端等。本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统。下面以用于实现终端设备的功能的装置是终端设备为例，描述本申请实施例提供的多播业务传输方法。
在图2所示系统中，为了解决现有终端设备在CA场景下接收多播业务时，终端设备在所有小区上盲检PDCCH，根据检测到的PDCCH接收多播业务的功率消耗增加的问题，网络设备可以向终端设备指示与多播业务相关的配置信息，如：第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：多播业务对应的RNTI以及多播业务的标识等等，终端设备根据与多播业务相关的配置信息，在指定的服务小区上应用RNTI接收PDCCH，根据接收到的PDCCH接收多播业务。具体的，该实现过程可参照下述图4～图7对应的实施例中所述。
需要说明的是，本申请各实施例中，第一多播业务对应的服务小区可以指用于调度第一多播业务的PDCCH对应的服务小区，网络设备可以在该服务小区上向终端设备发送用于调度第一多播业务的PDCCH。
在具体实现时，图2所示各网元，如：终端设备、网络设备可采用图3所示的组成结构或者包括图3所示的部件。图3为本申请实施例提供的一种通信装置300的组成示意图，当该通信装置300具有本申请实施例所述的终端设备的功能时，该通信装置300可以为终端设备或者终端设备中的芯片或者片上系统。当通信装置300具有本申请实施例所述的网 络设备的功能时，通信装置300可以为网络设备或者网络设备中的芯片或者片上系统。
如图3所示，该通信装置300可以包括处理器301，通信线路302以及收发器303。进一步的，该通信装置300还可以包括存储器304。其中，处理器301，存储器304以及收发器303之间可以通过通信线路302连接。
其中，处理器301可以是中央处理器(central processing unit，CPU)、通用处理器网络处理器(network processor，NP)、数字信号处理器(digital signal processing，DSP)、微处理器、微控制器、可编程逻辑器件(programmable logic device，PLD)或它们的任意组合。处理器301还可以是其它具有处理功能的装置，如电路、器件或软件模块等。
通信线路302，用于在通信装置300所包括的各部件之间传送信息。
收发器303，用于与其他设备或其它通信网络进行通信。该其它通信网络可以为以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。收发器303可以是射频模块、通信接口或者任何能够实现通信的装置。本申请实施例仅以收发器303为射频模块为例进行说明，其中，射频模块可以包括天线、射频电路等，射频电路可以包括射频集成芯片、功率放大器等。
存储器304，用于存储指令。其中，指令可以是计算机程序。
其中，存储器304可以是只读存储器(read-only memory，ROM)或可存储静态信息和/或指令的其他类型的静态存储设备，也可以是随机存取存储器(random access memory，RAM)或者可存储信息和/或指令的其他类型的动态存储设备，还可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储、磁盘存储介质或其他磁存储设备，光碟存储包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等。
需要说明的是，存储器304可以独立于处理器301存在，也可以和处理器301集成在一起。存储器304可以用于存储指令或者程序代码或者一些数据等。存储器304可以位于通信装置300内，也可以位于通信装置300外，不予限制。处理器301，用于执行存储器304中存储的指令，以实现本申请下述实施例提供的多播业务传输方法。
在一种示例中，处理器301可以包括一个或多个CPU，例如图3中的CPU0和CPU1。
作为一种可选的实现方式，通信装置300包括多个处理器，例如，除图3中的处理器301之外，还可以包括处理器307。
作为一种可选的实现方式，通信装置300还包括输出设备305和输入设备306。示例性地，输入设备306是键盘、鼠标、麦克风或操作杆等设备，输出设备305是显示屏、扬声器(speaker)等设备。
需要说明的是，通信装置300可以是台式机、便携式电脑、网络服务器、移动手机、平板电脑、无线终端设备、嵌入式设备、芯片系统或有图3中类似结构的设备。此外，图3中示出的组成结构并不构成对该通信装置的限定，除图3所示部件之外，该通信装置可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
本申请实施例中，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。
下面结合图2所示通信系统，对本申请实施例提供的多播业务传输方法进行描述。其中，下述实施例中的各设备可以具有图3所示部件。其中，本申请各实施例之间涉及的动作，术语等均可以相互参考，不予限制。本申请的实施例中各个设备之间交互的消息名称 或消息中的参数名称等只是一个示例，具体实现中也可以采用其他的名称，不予限制。本申请各实施例涉及的动作只是一个示例，具体实现中也可以采用其他的名称，如：本申请实施例所述的“携带在”还可以替换为“承载于”或者“包括在”等。
图4为本申请实施例提供的一种多播业务传输方法的流程图，如图4所示，包括：
步骤401：第一网络设备确定第一配置信息。
其中，第一网络设备可以为图2中的任一网络设备，如：可以为图2中的网络设备1，也可以为图2中的网络设备2，本申请实施例不予限制。
其中，第一配置信息可以用于指示终端设备接收第一多播业务，终端设备可以为第一网络设备覆盖区域中的任一UE，该终端设备可以工作在DC模式，也可以工作在非DC模式。例如，如图2所示，当第一网络设备为图2中的网络设备1时，该终端设备可以为网络设备1覆盖区域中的任一UE，如：可以为小区1.1中的任一UE，也可以为小区1.2中的任一UE。当第一网络设备为图2中的网络设备2时，该终端设备可以为网络设备2覆盖区域中的任一UE，如：可以为小区2.1中的任一UE，也可以为小区2.2中的任一UE。第一多播业务可以为网络设备为终端设备提供的任一多播业务，不予限制。当终端设备工作在非DC模式时，第一多播业务可以为第一网络设备为终端设备提供的任一多播业务；当终端设备工作在DC模式时，第一多播业务可以为辅小区组，如：下述第二网络设备，为终端设备提供的任一多播业务。
其中，第一配置信息可以包括第一多播业务对应的服务小区的标识、以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI。即第一配置信息可以包括第一多播业务对应的服务小区的标识以及第一多播业务的标识；或者，第一配置信息可以包括第一多播业务对应的服务小区的标识以及第一多播业务对应的RNTI；或者，第一配置信息可以包括第一多播业务对应的服务小区的标识、第一多播业务的标识以及第一多播业务对应的RNTI。
其中，第一多播业务的标识可以唯一标识第一多播业务。第一多播业务的标识可以为第一多播业务的应用层标识，例如，第一多播业务的标识可以为第一多播业务的服务标识(service ID)。如前所述，第一多播业务可以与RNTI对应，网络设备可以应用第一多播业务对应的RNTI对用于调度第一多播业务的PDCCH进行加扰，并发送加扰后的PDCCH以及第一多播业务，相对的，终端设备可以应用第一多播业务对应的RNTI对网络设备发送的PDCCH进行解扰，根据解扰成功的PDCCH接收第一多播业务。
其中，第一多播业务对应的RNTI可以称为G-RNTI或者多播RNTI。第一多播业务对应的RNTI可以等效于第一多播业务的底层标识，根据第一多播业务对应的RNTI以及业务与RNTI间的对应关系可以唯一识别出第一多播业务。
其中，第一多播业务对应的服务小区可以包括在终端设备的服务小区集合中，可以为终端设备的服务小区集合中的任一服务小区，第一多播业务对应的服务小区上可以发送用于调度第一多播业务的PDCCH。例如，网络设备可以从终端设备的服务小区集合中采用现有方式选择出第一多播业务对应的服务小区，在选择出的服务小区上向终端设备发送用于调度第一多播业务的PDCCH。终端设备的服务小区集合可以包括终端设备的一个或者多个服务小区，其中，每个服务小区对应一个小区标识(cell identifier，cell ID)，也就是说，终端设备的不同服务小区对应不同的小区标识，服务小区的小区标识可以唯一标识服 务小区。具体的，终端设备的服务小区集合以及该服务小区集合中每个服务小区的标识可以由网络侧预先配置给终端设备。
一种可能的设计中，服务小区的小区标识可以为服务小区的PCI。
又一种可能的设计中，服务小区的小区标识可以为服务小区在终端设备的服务小区集合中的编号，如：可以为网络侧为终端设备配置的小区列表中服务小区的索引，不同网络设备覆盖下的服务小区的小区标识可以相同，也可以不同，不予限制。
例如，终端设备的服务小区集合包括五个服务小区，可以采用编号1～编号5对该五个服务小区进行编号，使得这五个服务小区的小区标识分别为：服务小区1、服务小区2、服务小区3、服务小区4、服务小区5。
再一种可能的设计中，服务小区的小区标识可以为服务小区的小区全球标识(cell global identifier，CGI)或者演进的小区全局标识(evolved cell global identifier，ECGI)。
需要说明的是，除包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI之外，第一配置信息还可以包括其他信息，如：第一多播业务的传输资源的标识，第一多播业务的传输资源的标识可以用于指示第一多播业务的传输资源，第一多播业务的传输资源可以为带宽部分(bandwidth part，BWP)或者其他粒度的传输资源，不予限制。
对于步骤401，第一网络设备确定第一配置信息的方法可以有多种：
一种示例中，当终端设备工作在非DC模式，即当前终端设备与第一网络设备连接时，第一网络设备确定第一配置信息可以包括：当第一网络设备确定终端设备需要接收第一多播业务或者第一网络设备确定终端设备加入第一多播业务对应的多播群组时，第一网络设备自身确定为终端设备提供第一多播业务的服务小区的标识，将第一多播业务对应的服务小区的标识以及第一多播业务的标识包括在第一配置信息中；或者，第一网络设备自身确定为终端设备提供第一多播业务的服务小区的标识，并根据第一多播业务的标识以及业务与RNTI之间的对应关系/关联关系确定第一多播业务对应的RNTI，将第一多播业务对应的服务小区的标识以及第一多播业务的标识包括在第一配置信息中；或者，第一网络设备自身确定为终端设备提供第一多播业务的服务小区的标识，并根据第一多播业务的标识以及业务与RNTI之间的对应关系/关联关系确定第一多播业务对应的RNTI，将第一多播业务对应的服务小区的标识、第一多播业务的标识以及第一多播业务对应的RNTI包括在第一配置信息中。
又一种示例中，当终端设备工作在DC模式，终端设备同时与第一网络设备、第二网络设备连接时；第一网络设备确定第一配置信息可以包括：第一网络设备向第二网络设备发送包括终端设备的标识以及第一多播业务的标识的第一信息，接收来自第二网络设备的第二配置信息，根据第二配置信息确定第一配置信息。或者，当终端设备工作在DC模式时，第一网络设备自身确定终端设备需要接收第一多播业务或者第一网络设备确定终端设备加入第一多播业务对应的多播群组，生成第一配置信息，如：第一网络设备可参照上述终端设备工作在非DC模式时，第一网络设备确定第一配置信息的过程，不予赘述。
其中，第二网络设备可以为能够向终端设备提供/发送第一多播业务的任一网络设备。
其中，第二配置信息可以包括第一多播业务的标识、第一多播业务对应的RNTI，以及第一多播业务对应的服务小区的小区标识中的一种或者多种信息。
当终端设备工作在DC模式时，第一网络设备可参照图6所示方法从第二网络设备第二配置信息，根据第二配置信息确定第一配置信息。
步骤402：第一网络设备向终端设备发送第一配置信息。
一种示例中，第一网络设备向终端设备发送第一配置信息可以包括：第一网络设备将第一配置信息包括在DCI中向终端设备发送，如：在第一网络设备的主小区上向终端设备发送DCI，所述DCI包括第一配置信息。
又一种示例中，第一网络设备向终端设备发送第一配置信息可以包括：第一网络设备将第一配置信息包括在无线资源控制(radio resource control，RRC)信令中向终端设备发送，如：在第一网络设备的主小区上向终端设备发送RRC信令，所述RRC信令包括第一配置信息。
步骤403：终端设备接收第一配置信息，根据第一配置信息接收第一多播业务。
其中，终端设备根据第一配置信息接收第一多播业务可以包括：终端设备根据第一配置信息确定第一多播业务对应的RNTI以及服务小区，应用所述RNTI在服务小区上检测用于调度第一多播业务的PDCCH，在PDCCH所指示的时频资源位置上接收第一多播业务。
其中，用于调度第一多播业务的PDCCH以及第一多播业务可以由第一网络设备发送给终端设备，也可以由第二网络设备发送给终端设备。例如，当终端设备工作在非DC模式时，第一网络设备可以应用RNTI对用于调度第一多播业务的PDCCH进行加扰，并在第一多播业务对应的服务小区上向终端设备发送加扰后的PDCCH以及在PDCCH所指示的时频资源上发送第一多播业务。当终端设备工作在DC模式时，第二网络设备可以应用RNTI对用于调度第一多播业务的PDCCH进行加扰，并在第一多播业务对应的服务小区上向终端设备发送加扰后的PDCCH以及在PDCCH所指示的时频资源上发送第一多播业务。如此，可以在DC模式下，通过第二网络设备向终端设备发送多播业务，降低第一网络设备发送多播业务的负担。需要说明的是，在DC模式下，当第一网络设备具备充足的用于发送第一多播业务的传输资源时，也可以由第一网络设备向终端设备发送用于调度第一多播业务的PDCCH以及第一多播业务，不予限制。
在第一种可能的实现中，第一配置信息包括第一多播业务对应的服务小区的标识以及第一多播业务的标识，终端设备可以根据所述服务小区的小区标识识别出第一多播业务对应的服务小区，根据第一多播业务的标识以及预配置的业务与RNTI之间的对应关系/关联关系确定第一多播业务对应的RNTI，应用确定出的RNTI在所述服务小区上的所有搜索空间内检测用于调度第一多播业务的PDCCH，在检测到的PDCCH所指示的时频资源位置上接收第一多播业务。
在第二种可能的实现中，第一配置信息包括第一多播业务对应的服务小区的标识以及第一多播业务对应的RNTI，终端设备可以根据服务小区的小区标识识别出服务小区，应用第一多播业务对应的RNTI在所述服务小区上的所有搜索空间内检测用于调度第一多播业务的PDCCH，在检测到的PDCCH所指示的时频资源位置上接收第一多播业务。
在第三种可能的实现中，第一配置信息包括第一多播业务对应的服务小区的标识、第一多播业务的标识以及第一多播业务对应的RNTI，终端设备可以根据服务小区的小区标识识别出服务小区，根据第一多播业务的标识以及业务与搜索空间的对应关系确定第一多播业务对应的搜索空间，应用第一多播业务对应的RNTI在所述服务小区上第一多播业务 对应的搜索空间内检测用于调度第一多播业务的PDCCH，在检测到的PDCCH所指示的时频资源位置上接收第一多播业务。如此，可以在服务小区上的指定搜索空间内检测PDCCH，减少终端设备检测PDCCH的功率消耗。
其中，业务与搜索空间的对应关系可以由网络设备预先配置给终端设备。具体的，业务与搜索空间的对应关系可参照现有描述，不予赘述。
需要说明的是，图4是以第一多播业务为例对终端设备接收第一多播业务的过程进行了描述，参照图4所示方法，在CA场景下，网络设备可以指示终端设备在指定的服务小区上检测用于调度单播业务的PDCCH，以减少终端设备检测PDCCH，根据检测到的PDCCH接收单播业务的功率消耗。例如，网络设备可以向终端设备发送单播业务相关的配置信息，如：单播业务对应的服务小区的小区标识以及下述一种或者多种信息：单播业务的标识、单播业务对应的RNTI，终端设备可以根据单播业务相关的配置信息在指定的服务小区上应用对应的RNTI检测用于调度单播业务的PDCCH，在检测到的PDCCH所指示的时频资源位置上接收单播业务。如此，终端设备不需要在其支持的所有小区上应用对应的RNTI检测用于调度单播业务的PDCCH，降低终端设备的功率消耗。其中，单播业务对应的RNTI可以称为小区RNTI(cell RNTI，C-RNTI)或者单播RNTI，不予限制。
例如，以网络设备为基站，终端设备为UE为例，如图5所示，UE具有CA能力，支持通过Pcell，Scell1以及Scell2与基站进行通信。在基站确定通过Scell2向UE发送多播业务之前，基站可以将多播业务对应的G-RNTI以及Scell2的标识包括在配置信息中发送给UE。后续，UE可以根据该配置信息，在Scell2上应用G-RNTI检测用于调度多播业务的PDCCH，在检测到的PDCCH所指示的时频资源位置上接收多播业务。而不需要在Pcell，Scell1以及Scell2三个小区上应用G-RNTI检测用于调度多播业务的PDCCH，降低终端设备的功率消耗。
类似的，当基站确定通过Scell1向UE发送单播业务之前，基站可以将单播业务对应的C-RNTI以及Scell1的标识包括在配置信息中发送给UE。后续，UE可以根据该配置信息，在Scell1上应用C-RNTI检测用于调度单播业务的PDCCH，并在检测到的PDCCH所指示的时频资源位置上接收单播业务。而不需要在Pcell，Scell1以及Scell2三个小区上应用C-RNTI检测用于调度单播业务的PDCCH，降低终端设备的功率消耗。
需要说明的是，图4是以第一多播业务为例对终端设备接收第一多播业务的过程进行了描述，参照图4所示方法，终端设备可以在多个指定的服务小区上接收多个多播业务，如：第一网络设备可以向终端设备发送包括多个多播业务的标识、以及每个多播业务对应的RNTI以及每个多播业务对应的服务小区的小区标识，终端设备根据接收到配置信息在多个服务小区上接收多个多播业务。
例如，以终端设备为UE，网络设备为基站为例，基站向UE发送的配置信息包括{多播业务1、RNTI1，服务小区1}、{多播业务2、RNTI2，服务小区2}，UE接收到配置信息后，根据配置信息在服务小区1上应用RNTI1检测用于调度多播业务1的PDCCH，在检测到的PDCCH所指示的时频资源上接收多播业务1，在服务小区2上应用RNTI2检测用于调度多播业务2的PDCCH，在检测到的PDCCH所指示的时频资源上接收多播业务2。
通过应用图4所示方法，第一网络设备可以确定与多播业务相关的配置信息，如：第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：多播业务对应的RNTI 以及多播业务的标识，并将与多播业务相关的配置信息通知给终端设备，终端设备根据与多播业务相关的配置信息，在指定的服务小区上通过对应的RNTI检测用于调度多播业务的PDCCH，根据检测到的PDCCH接收多播业务。与现有技术相比，图4所示方法无需终端设备在所有服务小区上盲检用于调度多播业务的PDCCH，减少终端设备在CA场景下检测PDCCH，根据检测到的PDCCH接收多播业务的功率消耗。
在图4所示方法的第一个可能的实现方式中，当终端工作在DC模式时，第一网络设备可以参照图6所示方法从第二网络设备获取第二配置信息，根据第二配置信息确定第一配置信息。需要说明的是，图6所示方法可以不依赖于图4所示方法，图6所示方法可以单独实施，即本申请实施例不限于通过图6所示配置方法所示由第二网络设备辅助第一网络设备向终端设备发送与第一多播业务相关的配置信息，也可以参照图6所示方法实现由第二网络设备辅助第一网络设备向终端设备发送其他配置信息，如：终端设备可以通过第一网络设备向第二网络设备请求上行传输资源，第二网络设备可以辅助第一网络设备向终端设备发送上行传输资源的相关配置信息等。
图6为本申请实施例提供的一种配置流程图，如图6所示，所述方法包括：
步骤601：第一网络设备向第二网络设备发送第一信息。
其中，第一网络设备可以为图2中为终端设备提供网络服务的主网络设备，第二网络设备可以为图2中为终端设备提供网络设备的辅网络设备。需要说明的是，本申请实施例中，主网络设备、辅网络设备为相对概念，主网络设备对应主小区组，承载终端设备的控制面以及用户面，可以向终端设备发送业务以及控制信令等。辅网络设备对应辅小区组，承载终端设备的用户面，可以向终端设备发送业务。
其中，第一信息可以包括终端设备的标识和第一多播业务的标识。第一信息可以用于指示终端设备需要接收第一多播业务。例如，第一信息可以用于请求第二网络设备向终端设备发送第一多播业务或者用于请求加入第一多播业务对应的多播群组，当第二网络设备接收到第一信息，第二网络设备可以根据第一信息确定终端设备需要第一多播业务。
其中，终端设备的标识用于标识一个终端设备或者描述为终端设备的标识可以用于标识需要第一多播业务的某个特定的终端设备。具体的，终端设备的标识可以为终端设备的国际移动用户识别码(international mobile subscriber identification number，IMSI)或者移动用户识别号码(mobile subscriber identification number，MSIN)或者终端设备的临时移动用户标识(temporary mobile subscriber identity，TMSI)或者终端设备专用的Xn应用协议标识(UE specific Xn application protocol identifier，UE specific XnAP ID等。可选的，终端设备的标识还可以替换为其他标识符，该其他标识符能够标识单播业务是某个特定的终端设备的，如：终端设备的标识还可以替换为C-RNTI，不予限制。
其中，第一多播业务的标识的相关定义可参照步骤401中所述，不予赘述。
示例性的，当第一网络设备确定需要第二网络设备向终端设备发送第一多播业务时，如：第一网络设备确定自身发送第一多播业务超负荷和/或者确定终端设备工作在DC模式时，第一网络设备向第二网络设备发送第一信息。
其中，第一网络设备可以采用现有方式预先获取终端设备的能力信息，终端的能力信息可以包括指示终端设备是否工作在DC模式，进而，第一网络设备可以根据终端设备的能力信息确定终端设备工作在DC模式。
具体的，第一网络设备可以将第一信息包括在辅小区组添加请求向第二网络设备发送，或者包括在其他专用消息或者新增消息中向第二网络设备发送，不予限制。
其中，辅小区组添加请求可以为添加辅基站消息或者添加辅小区组(add secondary cell group，Add SCG)消息或者辅基站添加请求(S-NODE ADDITION REQUEST)。
步骤602：第二网络设备接收第一信息，向第一网络设备发送第二配置信息。
其中，第二配置信息可以用于指示终端设备接收第一多播业务。第二配置信息包括的参数可以与第一配置信息包括的参数相同，如：第二配置信息可以包括第一多播业务的标识、第一多播业务对应的RNTI、以及第一多播业务对应的服务小区的小区标识中的一个或者多个。第二配置信息可以为支持第二网络设备与第一网络设备之间的传输协议的任一信息，第一配置信息可以为支持第一网络设备与终端设备之间的传输协议的任一信息，如：第一配置信息可以为RRC信令或者DCI，第二配置信息的消息格式与第一配置信息的消息格式可以是不同的，同一参数在第二配置信息中的位置与在第一配置信息中的位置是不同的。例如，配置信息1、配置信息2均可以包括服务小区的标识，但所述服务小区的标识位于第二配置信息的从第1个比特～第8个比特的比特域，而所述服务小区的标识可以位于第一配置信息的从第6个比特～第13个比特的比特域。
其中，第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识的相关描述可参照步骤401中所述，不予赘述。
示例性的，第二网络设备接收到第一信息后，可以根据第一多播业务的标识以及终端设备的标识，确定该终端设备需要第一多播业务。后续，当第二网络设备结合自身的传输能力确定为终端设备提供第一多播业务时，向第一网络设备发送第二配置信息。
可选的，第二网络设备将第二配置信息包括在辅小区组添加响应发送给第一网络设备，或者包括在其他专用消息或者新增消息中发送给第一网络设备，不予限制。
其中，辅小区组添加响应还可以描述为添加辅基站响应或者Add SCG响应S-NODE ADDITION REQUEST ACKNOWLEDGE，不予限制。如：当辅小区组添加请求为添加辅基站消息时，辅小区组添加响应可以为添加辅基站响应；当辅小区组添加请求为Add SCG时，辅小区组添加响应可以为Add SCG响应；当辅小区组添加请求为S-NODE ADDITION REQUEST时，辅小区组添加响应可以为S-NODE ADDITION REQUEST ACKNOWLEDGE。
需要说明的是，步骤601中第一信息包括在辅小区组添加请求中、步骤602中第二配置信息包括在辅小区组添加响应中这两个动作可以同时存在或者择其一存在，不予限制。
步骤603：第一网络设备接收第二配置信息，根据第二配置信息向终端设备发送第一配置信息。
示例性的，第一网络设备根据第二配置信息向终端设备发送第一配置信息可以包括：第一网络设备根据第二配置信息生成第一配置信息，并向终端设备发送第一配置信息。
其中，第一网络设备可以包括与第二配置信息相同的参数信息，但两个配置信息的格式不同，例如，网络设备将第二配置信息包括的参数按照第一配置信息对应的消息格式封装在一起，得到第一配置信息。
在第一种可能的实现中，第二配置信息包括第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识，第一网络设备从第二配置信息中获取第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识，将获取到的第一多播业务对应的 RNTI以及第一多播业务对应的服务小区的小区标识按照第一配置信息对应的消息格式封装在一起得到第一配置信息，并将第一配置信息发送给终端设备；或者，将从第二配置信息中获取到的参数以及第一消息包括的第一多播业务的标识按照第一配置信息对应的消息格式封装在一起，得到第一配置信息，并将第一配置信息发送给终端设备。
在第二种可能的实现中，第二配置信息包括第一多播业务的标识、第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识，第一网络设备获取第二配置信息包括的第一多播业务的标识、第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识，将获取到的各个参数按照第一配置信息对应的消息格式封装在一起得到第一配置信息，并将第一配置信息发送给网络设备。
其中，第一网络设备向终端设备发送第一配置信息的过程如步骤402所述，不予赘述。
需要说明的是，图6以终端设备请求第一多播业务，第二网络设备为终端设备配置第一多播业务相关的配置信息为例进行描述，参照图6所示方法，第一网络设备向第二网络设备请求为终端设备提供多个多播业务，当第二网络设备确定为终端设备提供多个多播业务时，配置与该多个多播业务相关的配置信息，并通过第一网络设备发送给终端设备。
通过应用图6所示方法，第一网络设备可以请求第二网络设备辅助向终端设备发送多播业务，并在第二网络设备向终端设备发送多播业务之前，将与该多播业务相关的配置信息配置给终端设备，以便终端设备可以根据与该多播业务相关的配置信息，在指定的服务小区上应用对应的RNTI接收多播业务，无需终端设备在所有小区上应用对应的RNTI盲检用于调度多播业务的PDCCH，减少终端设备在CA场景下检测PDCCH，在检测到的PDCCH指示的时频资源位置上接收多播业务的功率消耗。
进一步的，在图4所示方法的第二个可能的实现方式中，当第一多播业务对应的服务小区发生切换和/或第一多播业务对应的RNTI发生变化时，为了保证终端设备根据第一配置信息接收多播业务的准确性，需要更新第一配置信息，所述方法还包括：第一网络设备获取用于更新第一配置信息的第三配置信息，向终端设备发送第三配置信息。
其中，第三配置信息用于更新第一配置信息，第三配置信息可以包括第一多播业务的标识、第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识中的一种或者多种，如：可以包括第一多播业务的标识以及第一多播业务对应的服务小区的小区标识；或者，包括第一多播业务的标识以及第一多播业务对应的RNTI；或者，包括第一多播业务的标识、第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识等，不予限制。第三配置信息包括的第一多播业务对应的RNTI与第一配置信息包括的第一多播业务对应的RNTI不同，和/或，第三配置信息包括的第一多播业务对应的服务小区的小区标识与第一配置信息包括的第一多播业务对应的服务小区的小区标识不同。
需要说明的是，本申请实施例中，第一网络设备获取到的第三配置信息与第一网络设备向终端设备发送的第三配置信息不限定是完全相同的信息，第一网络设备获取到的第三配置信息包括的参数与第一网络设备向终端设备发送的第三配置信息包括的参数可以相同，但第一网络设备获取到的第三配置信息的格式与第一网络设备向终端设备发送的第三配置信息的格式可以是不同的，同一参数在第一网络设备获取到的第三配置信息中的位置与在第一网络设备向终端设备发送的第三配置信息中的位置是不同的。例如，以第一网络设备获取到的第三配置信息为配置信息1，第一网络设备向终端设备发送的第三配置信息 为配置信息2为例，配置信息1、配置信息2均可以包括服务小区的标识、RNTI，但所述服务小区的标识可以位于配置信息1的从第1个比特～第8个比特的比特域，位于配置信息2的从第6个比特～第13个比特的比特域。RNTI可以位于配置信息1的从第9个比特～第13个比特的比特域，位于配置信息2的从第1个比特～第5个比特的比特域。
其中，当终端设备工作在DC模式时，第一网络设备可以从第二网络设备获取第三配置信息；当终端设备工作在非DC模式时，第一网络设备可以自己生成第三配置信息。
进一步，终端设备接收到第三配置信息后，根据第三配置信息更新第一配置信息，如：当第三配置信息包括第一多播业务的标识、第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识时，可以将第一配置信息替换为第三配置信息。或者，当第三配置信息包括第一多播业务的标识、第一多播业务对应的RNTI时，可以将第一配置信息包括的第一多播业务对应的RNTI替换为第三配置信息包括的第一多播业务对应的RNTI。
进一步的，终端设备可以根据更新后的第一配置信息接收多播业务。
例如，以第一多播业务为多播业务1，第一多播业务对应的RNTI为RNTI1，RNTI1对应的服务小区为服务小区1为例，第一配置信息包括{多播业务1，RNTI1，服务小区1}，当多播业务1对应的RNTI切换为RNTI2，而用于传输多播业务1的服务小区仍为服务小区1时，第一网络设备可以获取第三配置信息{多播业务1，RNTI2}或者第三配置信息{多播业务1，RNTI2，服务小区1}，并将获取到的第三配置信息发送给终端设备，终端设备接收到第三配置信息后，可以将第一配置信息更新为{多播业务1，RNTI2，服务小区1}，根据更新后的第一配置信息，在服务小区1上应用RNTI2检测用于调度多播业务1的PDCCH，在检测到的PDCCH指示的时频资源位置上接收多播业务1。
进一步的，在图4所示方法的第三个可能的实现方式中，当网络侧停止向终端设备发送第一多播业务时，为了释放传输资源，提高传输资源利用率，所述方法还可以包括：第一网络设备向终端设备发送用于指示第一配置信息失效的第二指示信息。
进一步的，终端设备接收到用于指示第一配置信息失效的第二指示信息后，终端设备不再应用第一多播业务对应的RNTI，在第一多播业务对应的服务小区上检测PDCCH，终端设备还可以删除第一配置信息，以降低配置信息所占用的存储资源并释放传输资源。
其中，在终端设备工作在DC模式的场景下，第一网络设备可以在接收到来自第二网络设备的第一指示信息后，根据第一指示信息向终端设备发送第二指示信息。
在终端设备工作在非DC模式的场景下，第一网络设备可以在自身确定停止向终端设备发送第一多播业务时，向终端设备发送用于指示第一配置信息失效的第二指示信息。
例如，以第一多播业务为多播业务1，第一多播业务对应的RNTI为RNTI1，第一多播业务对应的服务小区为服务小区1为例，第一配置信息包括{多播业务1，RNTI1，服务小区1}。当第一网络设备接收到来自第二网络设备的用于指示停止发送多播业务1的指示信息后，第一网络设备可以向终端设备发送第一配置信息失效的指示信息，终端设备接收到用于指示第一配置信息失效的配置信息后，删除第一配置信息{多播业务1，RNTI1，服务小区1}，不再应用RNTI1在服务小区1检测用于调度多播业务1的PDCCH。
需要说明的是，若在执行图4所示方法的第三个可能的实现方式之前，终端设备已根据第三配置信息对第一配置信息进行更新，则在图执行图4所示方法的第三个可能的实现方式时，终端设备可以删除更新后的第一配置信息。
下面结合图7，以终端设备工作在DC模式，第一配置信息包括第一多播业务对应的服务小区的标识、第一多播业务的标识以及第一多播业务对应的RNTI为例，对图4所示方法进行详细描述。
图7为本申请实施例提供的又一种多播业务传输方法的流程图，如图7所示，所述方法包括步骤701～步骤713：
步骤701：第一网络设备确定终端设备需要第一多播业务。
示例性的，第一网络设备可以接收终端设备请求第一多播业务的请求消息，根据该请求消息确定终端设备需要第一多播业务。
可以理解的，该步骤701为可选步骤。在执行本申请实施例提供的多播业务传输方法时，可以不执行该步骤701。
步骤702：第一网络设备向第二网络设备发送第一信息。
其中，第一信息的相关描述以及步骤702可参照步骤601所述，不予赘述。
步骤703：第二网络设备接收第一信息，向第一网络设备发送第二配置信息，并根据第二配置信息向终端设备发送第一多播业务。
其中，第二配置信息的相关描述以及第二网络设备向第一网络设备发送第二配置信息可参照步骤602所述，不予赘述。
其中，第二网络设备根据第二配置信息向终端设备发送第一多播业务可以包括：第二网络设备应用第一多播业务对应的RNTI对用于调度第一多播业务的PDCCH进行加扰，在第一多播业务对应的服务小区上向终端设备发送加扰后的PDCCH，在PDCCH指示的时频资源位置上向终端设备发送第一多播业务。
步骤704：第一网络设备接收第二配置信息，根据第二配置信息确定第一配置信息。
其中，步骤704可参照步骤603所述，不予赘述。
步骤705：第一网络设备向终端设备发送第一配置信息。
其中，步骤705可参照步骤402所述，不予赘述。
步骤706：终端设备接收第一配置信息，根据第一配置信息接收第一多播业务。
其中，步骤706可参照步骤403所述，不予赘述。
进一步，当第一多播业务对应的RNTI和/或第一多播业务对应的服务小区发生变化时，为了保证终端设备接收多播业务的准确性，图7所示方法还可以包括：
步骤707：第二网络设备向第一网络设备发送第三配置信息。
其中，第三配置信息的相关描述、以及步骤707的具体实现可参照图4所示的第二个可能的实现方式中所述，不予赘述。
步骤708：第一网络设备接收第三配置信息，向终端设备发送第三配置信息。
步骤709：终端设备接收第三配置信息，根据第三配置信息更新第一配置信息，并根据更新后的第一配置信息接收第一多播业务。
可以理解的，步骤707～步骤709均为可选步骤。在执行本申请实施例提供的多播业务传输方法时，可以不执行步骤707～步骤709。
进一步的，当停止发送第一多播业务时，为了节约资源，图7所示方法还可以包括：
步骤710：第二网络设备停止发送第一多播业务。
步骤711：第二网络设备向第一网络设备发送第一指示信息。
其中，第一指示信息的相关描述可参照图4所示方法的第三个可能的实现方式中所述，不予赘述。
步骤712：第一网络设备接收第一指示信息，根据第一指示信息向终端设备发送第二指示信息。
步骤713：终端设备接收第二指示信息，根据第二指示信息删除第一配置信息/更新后的第一配置信息。
可以理解的，步骤710～步骤713均为可选步骤。在执行本申请实施例提供的多播业务传输方法时，可以不执行步骤710～步骤713。
通过应用图7所示方法，在终端设备工作在DC模式时，第一网络设备可以请求第二网络设备辅助向终端设备发送多播业务，并在第二网络设备向终端设备发送多播业务之前，由第二网络设备通过第一网络设备将与该多播业务相关的配置信息配置给终端设备，终端设备根据与该多播业务相关的配置信息，在指定的第一多播业务对应的服务小区上应用对应的RNTI检测用于调度多播业务的PDCCH，在检测到的PDCCH指示的时频资源位置上接收多播业务，无需终端设备在所有小区上应用对应的RNTI盲检PDCCH，减少终端设备在CA场景下检测PDCCH，根据PDCCH接收多播业务的功率消耗。同时，第二网络设备及时更新第一多播业务相关的配置信息，并将更新后的配置信息通知给终端设备，以便终端设备根据更新后的配置信息接收多播业务，保证多播业务接收的准确性。后续，当停止发送多播业务时，通知终端设备多播业务相关的配置信息无效，删除多播业务相关的配置信息，不在该配置信息所指示的服务小区上应用对应的RNTI检测用于调度多播业务的PDCCH，释放PDCCH传输资源。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行介绍。可以理解的是，各个通信装置，如：终端设备、第一网络设备、第二网络设备为实现上述功能，其包含执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对终端设备、第一网络设备、第二网络设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，图8示出一种通信装置80的结构图，该通信装置80可以为第一网络设备或者第一网络设备中的芯片或者片上系统，该通信装置80可以用于执行上述实施例中涉及的第一网络设备的功能。图8所示通信装置80包括：处理单元801、发送单元802。
处理单元801，用于确定用于指示终端设备接收第一多播业务的、包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI的第一配置信息。例如，处理单元801可以支持通信装置80执行步骤 401、步骤704。
发送单元802，用于向终端设备发送第一配置信息。例如，发送单元802可以支持通信装置80执行步骤402、步骤603、步骤705。
其中，通信装置的具体实现方式可参考图4～图7所示方法中第一网络设备的行为功能。
作为又一种可实现方式，图8中的处理单元801可以由处理器代替，该处理器可以集成处理单元801的功能。图8中的发送单元802可以由收发器代替，该收发器可以集成发送单元802的功能。进一步的，图8所示通信装置80还可以包括存储器。当图8中的处理单元801由处理器代替，发送单元802由收发器代替时，本申请实施例所涉及的通信装置80可以为图3所示通信装置300。
图9示出一种通信装置90的结构图，该通信装置90可以为终端设备或者终端设备中的芯片或者片上系统，该通信装置90可以用于执行上述实施例中涉及的终端设备的功能。作为一种可实现方式，图9所示通信装置90包括：接收单元901，处理单元902；
接收单元901，用于接收来自第一网络设备的包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI的第一配置信息。例如，接收单元901支持通信装置90执行步骤403、步骤706所述的接收第一配置信息的动作。
处理单元902，用于根据第一配置信息，通过接收单元901接收第一多播业务。例如，处理单元902可以执行步骤403、步骤706所述的接收第一多播业务的动作。
其中，通信装置90的具体实现方式可参考图4～图7方法中终端设备的行为功能。
作为又一种可实现方式，图9中的接收单元901可以由收发器或收发单元代替，该收发器可以集成接收单元901的功能。图9中的处理单元902可以由处理器代替，该处理器可以集成处理单元902的功能。进一步的，图9所示通信装置90还可以包括存储器。当接收单元901由收发器或收发单元代替，处理单元902由处理器代替时，本申请实施例所涉及的通信装置90可以为图3所示通信装置300。
图10示出一种通信装置100的结构图，该通信装置100可以为第二网络设备或者第二网络设备中的芯片或者片上系统，该通信装置100可以用于执行上述实施例中涉及的第二网络设备的功能。作为一种可实现方式，图10所示通信装置100包括：接收单元1001，发送单元1002；
接收单元1001，用于接收来自第一网络设备的包括终端设备的标识和第一多播业务的标识、用于指示终端设备需要接收第一多播业务的第一信息。例如，接收单元1001可以支持通信装置100执行步骤602、步骤703所述的接收第一信息的动作。
发送单元1002，用于向第一网络设备发送包括第一多播业务的标识、第一多播业务对应的RNTI、第一多播业务对应的服务小区的小区标识的第二配置信息。例如，发送单元1002可以支持通信装置100执行步骤602、步骤703所述的发送第二配置信息的动作。
其中，通信装置100的具体实现方式可参考图4～图7方法中第二网络设备的行为功能。
作为又一种可实现方式，图10中的接收单元1001，发送单元1002可以由收发器或收发单元代替，该收发器可以集成接收单元1001，发送单元1002的功能。进一步的，图10所示通信装置100还可以包括处理器、存储器。当接收单元1001，发送单元1002由收发器或收发单元代替时，本申请实施例所涉及的通信装置100可以为图3所示通信装置300。
图11为本申请实施例提供的一种通信系统的结构图，如图11所示，该系统可以包括：终端设备110、网络设备111。可选的，在图11所示系统中，终端设备110工作在非DC模式，即终端设备110接入一个网络设备。
其中，终端设备110具有图9所示通信装置90的功能，网络设备111可以具备图8所示通信装置80的功能。
例如，网络设备111，用于确定用于指示终端设备110接收第一多播业务的、包括第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：第一多播业务的标识、第一多播业务对应的RNTI的第一配置信息，并向终端设备110发送第一配置信息。
终端设备110，用于接收第一配置信息，根据第一配置信息接收第一多播业务。
其中，终端设备110的具体实现方式可参考图4～图7方法中终端设备的行为功能。网络设备111的具体实现方式可参考图4～图7方法中第一网络设备的行为功能。
图12为本申请实施例提供的一种通信系统的结构图，如图12所示，该系统可以包括：终端设备120、网络设备121、网络设备122。在图12所示系统中，终端设备120可以工作在DC模式。网络设备12可以将与多播业务相关的配置信息通过网络设备121发送给终端设备120，并应用对应的RNTI对用于调度多播业务的PDCCH进行加扰，向终端设备发送加扰后的PDCCH以及在PDCCH指示的时频资源位置上向终端设备发送多播业务。终端设备可以通过该配置信息在指定的服务小区上应用对应的RNTI检测PDCCH，在检测到的PDCCH指示的时频资源位置上接收网络设备122发送的多播业务。其中，网络设备122向终端设备120传输多播业务的路径可以如图12中虚线所示。
其中，终端设备120具有图9所示通信装置90的功能，网络设备121可以具备图8所示通信装置80的功能。网络设备122具有图10所示通信装置100的功能。
例如，网络设备121，用于向网络设备122发送终端设备120需要接收第一多播业务的、包括第一多播业务的标识以及终端设备120的标识的第一信息。
网络设备122，用于接收第一信息，确定为终端设备120提供第一多播业务，向网络设备121发送包括第一多播业务的标识、第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识的第一配置信息，并向终端设备120发送第二配置信息。
网络设备121，还用于接收第二配置信息，根据第二配置信息向终端设备120发送用于指示终端设备120接收第一多播业务的、包括第一多播业务的标识、第一多播业务对应的RNTI以及第一多播业务对应的服务小区的小区标识的第一配置信息。
终端设备120，用于接收第一配置信息，根据第一配置信息接收第一多播业务。
其中，终端设备120的具体实现方式可参考图4～图7方法中终端设备的行为功能。网络设备121的具体实现方式可参考图4～图7方法中第一网络设备的行为功能。网络设备122的具体实现方式可参考图4～图7方法中第二网络设备的行为功能。
本申请实施例还提供一种计算机可读存储介质。上述方法实施例中的全部或者部分流程可以由计算机程序来指令相关的硬件完成，该程序可存储于上述计算机可读存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。计算机可读存储介质可以是前述任一实施例的通信装置(包括数据发送端和/或数据接收端)的内部存储单元，例如通信装置的硬盘或内存。上述计算机可读存储介质也可以是上述通信装置的外部存储设备，例如上述通信装置上配备的插接式硬盘，智能存储卡(smart media card,SMC)，安全数字(secure  digital,SD)卡，闪存卡(flash card)等。进一步地，上述计算机可读存储介质还可以既包括上述通信装置的内部存储单元也包括外部存储设备。上述计算机可读存储介质用于存储上述计算机程序以及上述通信装置所需的其他程序和数据。上述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。
需要说明的是，本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
应当理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上，“至少两个(项)”是指两个或三个及三个以上，“和/或”，用于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：只存在A，只存在B以及同时存在A和B三种情况，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。“以下至少一项(个)”或其类似表达，是指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)，可以表示：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。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (30)

  1. 一种多播业务传输方法，其特征在于，所述方法应用于第一网络设备，所述方法包括：
    确定第一配置信息，所述第一配置信息用于指示终端设备接收第一多播业务，所述第一配置信息包括所述第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：所述第一多播业务的标识、所述第一多播业务对应的无线网络临时标识RNTI；
    向所述终端设备发送所述第一配置信息。
  2. 根据权利要求1所述的方法，其特征在于，
    所述小区标识为所述服务小区的物理小区标识PCI，或者，
    所述小区标识为所述服务小区在所述终端设备的服务小区集合中的编号，或者，
    所述小区标识为所述服务小区的小区全球标识。
  3. 根据权利要求1或2所述的方法，其特征在于，
    所述第一配置信息还包括所述第一多播业务的传输资源的标识。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    向第二网络设备发送第一信息，所述第一信息包括所述终端设备的标识和所述第一多播业务的标识，所述第一信息用于指示所述终端设备需要接收所述第一多播业务。
  5. 根据权利要求4所述的方法，其特征在于，
    所述第一信息包括于辅小区组添加请求消息中。
  6. 根据权利要求4或5所述的方法，其特征在于，所述方法还包括：
    接收来自所述第二网络设备的辅小区组添加响应消息，所述辅小区组添加响应消息包括第二配置信息，所述第二配置信息包括所述第一多播业务的标识，所述RNTI，以及所述第一多播业务对应的服务小区的小区标识。
  7. 根据权利要求4-6任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述第二网络设备的第三配置信息，所述第三配置信息用于更新所述第一配置信息；
    向所述终端设备发送所述第三配置信息。
  8. 根据权利要求4-7任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述第二网络设备的第一指示信息，所述第一指示信息用于指示所述第二网络设备停止发送所述第一多播业务。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送第二指示信息；所述第二指示信息用于指示所述第一配置信息失效。
  10. 一种多播业务传输方法，其特征在于，所述方法应用于终端设备，所述方法包括：
    接收来自第一网络设备的第一配置信息，所述第一配置信息用于指示终端设备接收第一多播业务，所述第一配置信息包括所述第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：所述第一多播业务的标识、所述第一多播业务对应的无线网络临时标识RNTI；
    根据所述第一配置信息，接收所述第一多播业务。
  11. 根据权利要求10所述的方法，其特征在于，
    所述小区标识为所述服务小区的物理小区标识PCI，或者，
    所述小区标识为所述服务小区在所述终端设备的服务小区集合中的编号，或者，
    所述小区标识为所述服务小区的小区全球标识。
  12. 根据权利要求10或11所述的方法，其特征在于，
    所述第一配置信息还包括所述第一多播业务的传输资源的标识。
  13. 根据权利要求10-12任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述第一网络设备的第三配置信息，所述第三配置信息用于更新所述第一配置信息。
  14. 根据权利要求10-13任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述第一网络设备的第二指示信息；所述第二指示信息用于指示所述第一配置信息失效。
  15. 一种多播业务传输方法，其特征在于，所述方法应用于第二网络设备，所述方法包括：
    接收来自第一网络设备的第一信息，所述第一信息包括终端设备的标识和第一多播业务的标识，所述第一信息用于指示所述终端设备需要接收所述第一多播业务；
    向所述第一网络设备发送第二配置信息，所述第二配置信息包括所述第一多播业务的标识、所述第一多播业务对应的无线网络临时标识RNTI、以及所述第一多播业务对应的服务小区的小区标识。
  16. 根据权利要求15所述的方法，其特征在于，
    所述第一信息包括于辅小区组添加请求消息中，
    所述第二配置信息包括于辅小区组添加响应消息中。
  17. 根据权利要求15或16所述的方法，其特征在于，
    所述小区标识为所述服务小区的物理小区标识PCI，或者，
    所述小区标识为所述服务小区在所述终端设备的服务小区集合中的编号，或者，
    所述小区标识为所述服务小区的小区全球标识。
  18. 根据权利要求15-17任一项所述的方法，其特征在于，所述方法还包括：
    向所述第一网络设备发送第三配置信息，所述第三配置信息用于更新第一配置信息。
  19. 根据权利要求15-18任一项所述的方法，其特征在于，所述方法还包括：
    向所述第一网络设备发送第一指示信息，所述第一指示信息用于指示所述第二网络设备停止发送所述第一多播业务。
  20. 一种通信装置，其特征在于，所述通信装置包括：
    接收单元，用于接收来自第一网络设备的第一配置信息，所述第一配置信息用于指示终端设备接收第一多播业务，所述第一配置信息包括所述第一多播业务对应的服务小区的小区标识以及下述一种或者多种信息：所述第一多播业务的标识、所述第一多播业务对应的无线网络临时标识RNTI；
    处理单元，用于根据所述第一配置信息，通过所述接收单元接收所述第一多播业务。
  21. 根据权利要求20所述的通信装置，其特征在于，
    所述小区标识为所述服务小区的物理小区标识PCI，或者，
    所述小区标识为所述服务小区在所述终端设备的服务小区集合中的编号，或者，
    所述小区标识为所述服务小区的小区全球标识。
  22. 根据权利要求20或21所述的通信装置，其特征在于，
    所述第一配置信息还包括所述第一多播业务的传输资源的标识。
  23. 根据权利要求20-22任一项所述的通信装置，其特征在于，
    所述接收单元，还用于接收来自所述第一网络设备的第三配置信息，所述第三配置信息用于更新所述第一配置信息。
  24. 根据权利要求20-23任一项所述的通信装置，其特征在于，
    所述接收单元，还用于接收来自所述第一网络设备的第二指示信息；所述第二指示信息用于指示所述第一配置信息失效。
  25. 一种通信装置，其特征在于，所述通信装置包括一个或多个处理器、收发器；所述一个或多个处理器、所述收发器用于支持所述通信装置执行如权利要求1-9任一项所述的多播业务传输方法。
  26. 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存储有计算机指令或程序，当所述计算机指令或程序在计算机上运行时，使得所述计算机执行如权利要求1-9任一项所述的多播业务传输方法。
  27. 一种通信装置，其特征在于，所述通信装置包括一个或多个处理器、收发器；所述一个或多个处理器、所述收发器支持所述通信装置执行如权利要求10-14任一项所述的多播业务传输方法。
  28. 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存储有计算机指令或程序，当所述计算机指令或程序在计算机上运行时，使得所述计算机执行如权利要求10-14任一项所述的多播业务传输方法。
  29. 一种通信装置，其特征在于，所述通信装置包括一个或多个处理器、收发器；所述一个或多个处理器、所述收发器支持所述通信装置执行如权利要求15-19任一项所述的多播业务传输方法。
  30. 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存储有计算机指令或程序，当所述计算机指令或程序在计算机上运行时，使得所述计算机执行如权利要求15-19任一项所述的多播业务传输方法。
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