Patent ID: 8169941
Filing Date: 2012-05-01
Classification: H04W,Y02D

Abstract:
1. A wireless system, comprising: a plurality of wireless stations (STA), wherein at least one of the STAs is a power save (PS) STA; and another wireless STA adapted to control access to a medium of a wireless network, wherein the at least one PS STA is provided deterministic access to the medium before other STAs of the plurality of STAs; wherein the another wireless STA is an access point (AP) and the wireless network is a centralized wireless network; wherein the AP transmits a beacon to the STAs at the beginning of a superframe or a beacon interval; wherein a power-save (PS) communication period succeeds a beacon transmission period (BT) and precedes other communication periods; wherein a power save transmission opportunity (PS-TXOP) is granted to each of the at least one PS STAs at a respective deterministic start time and consecutive PS-TXOPs are granted to the same PS STA at deterministic start times in consecutive PS periods.