Method and system for determining presence of broadcast/multicast cache frame at access point

Abstract

The embodiment of the invention discloses a method and system for determining the presence of a broadcast / multicast cache frame at an access point, which are used for solving the problem of unnecessary wakeup of terminal equipment. The method comprises the following steps of: when the access point receives a broadcast / multicast frame transmitted by a service network and / or multicast group, setting a broadcast / multicast indicating bit corresponding to the service network and / or multicast group in an effective state and transmitting a frame with the broadcast / multicast indicating bit to the terminal equipment; and determining the presence of a broadcast / multicast cache frame belonging to the terminal equipment at the access point according to the service network and / or multicast group related to the terminal equipment and the received broadcast / multicast indicating bit. The embodiment of the invention further discloses an access point and terminal equipment. According to the embodiment of the invention, the presence of the broadcast / multicast cache frame belonging to the terminal equipment at the access point can be recognized by the terminal equipment.

Description

technical field [0001] The present invention relates to a communication technology, in particular to a method and a system for determining that an access point has a broadcast / multicast buffer frame. Background technique [0002] A wireless local area network (wireless LAN, WLAN) technology is popular in the market because of its advantages in wireless, high-speed access comparable to wired connections, and low price. At present, it has begun to replace wired and widely used in homes, campuses, hotels, corporate offices, etc., and has begun to be widely deployed in public hotspots as a wireless broadband access technology to provide public wireless broadband data access services. The following uses the WLAN system defined by IEEE 802.11 as an example to illustrate the WLAN system. [0003] The basic structure of WLAN system is as follows: figure 1 As shown, the system includes: a terminal device (Station, STA), which includes a wireless local area network interface; an acc...

AI Technical Summary

Problems solved by technology

At this time, the AP is required to be able to configure multiple SSIDs. Different SSIDs correspond to different user groups or services. Although the AP can distinguish user groups or services based on the SSID, it cannot make the STA associated with the SSID determine which STAs are on the AP. Whether there are own broadcast / multicast frames cached in

Images