Method and device for transmitting multicast/broadcast message through wireless access point

Abstract

The invention discloses a method and a device for transmitting a multicast / broadcast message through a wireless access point. When receiving a multicast / broadcast message, the wireless access point detects the working state of a linked workstation. The method further comprises the following steps: when the workstation which is associated to the wireless access point comprises a workstation of the energy-saving state and a workstation of the normal state, the wireless access point copies the multicast / broadcast message and transmits the multicast / broadcast message to the associated workstation; and the wireless access point awakens the workstation staying at the energy-saving state so as to transmit the copied multicast / broadcast massage to the workstation which is awakened. Through the method, the multicast / broadcast message is rapidly transmitted from the wireless access point to the associated workstation.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and equipment for wireless access points to send multicast / broadcast messages. Background technique [0002] In a WLAN (Wireless Local Access Network, wireless local area network) network, in order to save power consumption of a Station (workstation), a Sleep function of the Station is designed. When there is data packet interaction between the Station and AP (Access Point, access point), the Station is in the awake state, that is, the normal working state; when there is no data packet interaction between the Station and the AP, the Station is in sleep ( Sleep) state, that is, power-saving state. [0003] When the Station is in the Sleep state, the Station maintains the connection with the AP by periodically waking up and sending Null packets to the AP. If the AP receives the Null packet sent by the Station within the preset time, the AP maintains the association ...

AI Technical Summary

Problems solved by technology

[0006] However, because the multiple stations associated with the AP may include some stations that are constantly in the energy-saving state, and the station enters the energy-saving state soon after being awakened from the energy-saving state, which causes the AP to send multicast / broadcast packets to multiple stations. Sometimes it will be necessary to repeat the process of buffering multicast / broadcast messages and waking up the Sleep Station, which will cause a huge network delay and affect the work of other normal stations.

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