Power saving apparatus and method in a wireless...

Details Power saving apparatus and method in a wireless... Power saving apparatus and method in a wireless...

2011-07-05

2011-07-05

Desir, Pierre-Louis (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S311000, C370S318000, C455S518000, C455S450000

Reexamination Certificate

active

07974250

ABSTRACT:
A power saving apparatus and a method in a wireless communication system are provided. An Access Point (AP) buffers transmission frames for sleep-mode stations in a sleep-mode buffer. Upon wakeup from a sleep mode, a station sends a first control information frame indicating wakeup to the access point. The access point sends a second control information frame including a requested transmission length in response to the first control information frame to the station. The station generates a third control information frame, aggregates the third control information frame and user data frames to a first protocol data unit, and sends it to the AP. Then the AP generates a fourth control information frame, aggregates the fourth control information frame and buffered frames to a second protocol data unit, and sends it to the station.

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