Method and device for sending traffic indication information

摘要

Provided are a method and a device for sending traffic indication information. In the method, an AP sends a radio frame to multiple STAs associated with the AP, wherein the radio frame carries an indication field, and the indication field is used to indicate whether the radio frame carries traffic indication virtual bitmap information. According to the technical solution provided, in the case where the AP has no unicast cache data for any station, multiple STAs associated with the AP can know whether the AP has their respective unicast cache data to be sent.

主权项

1. A method for sending traffic indication information, comprising:
an access point (AP) sending a radio frame to a plurality of non-AP stations (STAs) associated with the AP, wherein the radio frame carries an indication, and the indication is used for indicating whether the radio frame carries traffic indication virtual bitmap information; the indication is a preset value of a length field of a TIM (traffic indication map) information element, and the preset value is used for indicating that the radio frame does not carry the traffic indication virtual bitmap information; or the indication is used for indicating control information about a compressed TIM information element or the TIM information element, and when one or more bits of the indication are set to be a preset value, the indication is used for indicating that the radio frame does not carry the traffic indication virtual bitmap information.