System and method for beacon timing control in a mixed IEEE...

Details System and method for beacon timing control in a mixed IEEE... System and method for beacon timing control in a mixed IEEE...

2007-11-13

2007-11-13

D'Agosta, Steven M. (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S310200, C370S322000, C370S326000, C370S329000, C370S341000, C370S443000, C370S445000, C370S448000, C455S450000, C455S451000, C455S452100

Reexamination Certificate

active

10793306

ABSTRACT:
In a mixed IEEE 802.11 network, a system and method are provided for preventing beacon delays. The method comprises: establishing communications between an IEEE 802.11e access point (QAP) and at least one IEEE 802.11 station (STA); determining a safety interval with an endpoint; generating red-zone transmissions; and, in response to the red-zone transmissions, preventing STAs from transmitting a message having a length that exceeds the safety interval endpoint. For example the safety interval endpoint may be the TBTT. More particularly, the method: calculates a safety interval duration in response a minimum PHY rate of the STA; and, maintains the calculated safety interval duration in response to preventing STAs from transmitting a message having a length that exceeds the safety interval endpoint. In one aspect of the method, a single red-zone transmission is sent having a length approximately equal to the duration of the safety interval.

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