Method of communication device initiated frame exchange
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United States of America Patent
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Sep 15, 2009
Grant Date -
Apr 29, 2004
app pub date -
Oct 2, 2003
filing date -
Oct 25, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A method for accessing a wireless local area network (WLAN) channel and providing quality of service (QoS) for voice in a system supporting both voice and data services. Under the method, a communication device (302, 303) contends for a medium (channel). Upon identifying a transmit opportunity, the device transmits a voice packet to an access point (AP) (304) and polls the AP for downlink traffic. A low power implementation is feasible because the communication device can sleep, wake up to contend for the medium, transmit a voice packet to the AP, request a voice packet from the AP, transmit an acknowledgement, and go back to sleep.
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