Method, apparatus, and computer program product for efficient TIM compression and decoding

摘要

Method, apparatus, and computer program product embodiments improve power saving in network environments. An example method embodiment comprises: generating in an access point device, a traffic indication map comprising a page bitmap field, a page control field, one or more block bitmap fields, and one or more sub-block bitmaps indicating wireless client devices having buffered data in the access point device available for them; and periodically broadcasting the traffic indication map in a beacon frame to the wireless client devices.

主权项

1. A method, comprising:
receiving by a wireless client device, a traffic indication map in a beacon frame from an access point, the traffic indication map comprising a page bitmap field, a page control field, and one or more block bitmap fields, indicating there is buffered data available in the access point device for one or more wireless client devices, wherein the page bitmap field indicates presence or absence of buffered data for blocks of a page, and wherein the page control field indicates a mode of encoding the traffic indication map for the blocks for which there is buffered data, wherein at least two of the following modes of encoding are supported: block bitmap, single association identifier, and inverse bitmap; decoding by the wireless client device, the traffic indication map; and determining by the wireless client device, that there is buffered data available in the access point device for the wireless client device.