Media access control device guaranteeing communication...

Details Media access control device guaranteeing communication... Media access control device guaranteeing communication...

2007-10-23

2007-10-23

Phu, Sanh D. (Department: 2618)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S462000, C370S230000, C455S041200

Reexamination Certificate

active

11122941

ABSTRACT:
A MAC device guarantees QoS in a VoIP wireless LAN by giving higher priority to voice data than to non-voice data. Transmission data generated by an application program is provided to a modem according to the priority assigned to the data. A kernel classifies the transmission data into voice and non-voice data. A MAC driver stores the voice and non-voice data in two queues, and transmits a MAC header to a MAC transmitter to notify it of generation of the transmission data, and transmits the stored voice or non-voice data to the MAC transmitter according to the type of a transmission interrupt received from the MAC transmitter in response to the notification. The MAC transmitter combines the voice or non-voice data, received from the MAC driver in response to the transmission interrupt, with a corresponding header, and outputs it to the modem.

REFERENCES:
patent: 6560196 (2003-05-01), Wei
patent: 6611531 (2003-08-01), Chen et al.
patent: 2004/0114619 (2004-06-01), Park et al.
patent: 2004/0264488 (2004-12-01), Yoon et al.
patent: 2005/0141544 (2005-06-01), Park et al.
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IEEE Communications Society, pp. 3706-3711, Apr. 2004.
IEEE P802.11e/D8.0, Feb. 2004 (Draft Amendment to IEEE Std 802.11, 1999 Edition (Reaff 2003)).

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