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|1. (WO2018058468) MULTICAST SERVICE SENDING METHOD AND DEVICE|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||MULTICAST SERVICE SENDING METHOD AND DEVICE|
Embodiments of the present invention relates to the field of communications. Provided are a multicast service sending method and device, which can improve the transmission success rate of a multicast service for an NB-IoT and reduce waste of network resources. The method comprises: a core network device determines a coverage requirement of a multicast service to be transmitted; the core network device sends the coverage requirement to an access network device, the coverage requirement being used for determining a coverage level or a transmission parameter for sending a multicast service to a terminal device by the access network device; or on a radio link layer control protocol (RLC) layer, a base station sends, to the terminal device, all or part of radio link layer control protocol data control units (RLC PDUs) of one or more times of multicast services; the base station receives feedback information sent by the terminal device, the feedback information being used for indicating an unsuccessfully received RLC PDU to the base station; and the base station retransmits the unsuccessfully-received RLC PDU to the terminal device. The embodiments of the present invention are used for transmitting a multicast service.