Method, apparatus, and system for carrying out multimedia service in wireless local area

摘要

A method, an apparatus, and a system for carrying out a multimedia service are provided in a WLAN. The method includes: receiving a multicast data stream sent by a data server; and monitoring in real time a receiving rate of a terminal connected to an access point, if the receiving rate is higher than or equal to a multicast sending rate at which the access point sends multicast data, sending, in a multicast mode, the multicast data stream sent by the data server to the terminal, and if the receiving rate is lower than the multicast sending rate, converting the multicast data stream sent by the data server into a unicast data stream and sending the unicast data stream to the terminal.

主权项

1. A method for carrying out a multimedia service in a wireless local area network, comprising:
receiving, by an access apparatus, a multicast data stream sent by a data server; monitoring, by the access apparatus, in real time a receiving rate of a terminal connected the access apparatus; and determining, by the access apparatus, a unicast mode or a multicast mode for sending the multicast data stream to the terminal based on whether the receiving rate of the terminal is lower than a multicast sending rate at which the access apparatus sends multicast data; if the receiving rate of the terminal is higher than or equal to the multicast sending rate, sending, in the multicast mode, the multicast data stream to the terminal, and if the receiving rate of the terminal is lower than the multicast sending rate, converting the multicast data stream into a unicast data stream and sending, in the unicast mode, the unicast data stream to the terminal, wherein the converting the received multicast data stream into a unicast data stream and sending the unicast data stream to the terminal comprise: replicating the multicast data stream into at least one unicast data stream; obtaining, a mapping relationship between a multicast media access control address of a multicast group that the terminal joins and a media access control address of the terminal, through an IGMP snooping function; and replacing, according to the obtained mapping relationship between the multicast media access control address of the multicast group that a terminal joins and the media access control address of the terminal, the multicast media access control address of each unicast data stream of the at least one unicast data stream with a media access control address of one terminal, and sending each unicast data stream.