| abstract |
Embodiments of the present invention provide a multicast information transmission method and a device. Sending, by an access point AP, a multicast association identifier MID of a multicast group to a station STA, where one multicast group has one or more MIDs, and each MID corresponds to one multicast group and a receiving period of a STA in the multicast group; sending, by the AP, a delivery traffic indication map DTIM beacon frame to the STA, where the DTIM beacon frame includes the MID and is used for indicating a multicast group that has multicast information to be sent to the STA; and sending, by the AP, the multicast information of the multicast group, where the multicast information carries information about the MID or information associated with the MID, and the multicast information is received by the STA. The technical solutions of the present invention reduce resource waste of a STA. |