Method for dynamic control of RTS threshold to improve...

Details Method for dynamic control of RTS threshold to improve... Method for dynamic control of RTS threshold to improve...

2008-01-22

2008-01-22

Perez-Gutierrez, Rafael (Department: 2617)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S321000, C370S329000, C370S332000, C370S347000, C370S395530, C455S452200, C455S453000, C455S464000, C455S502000, C455S501000

Reexamination Certificate

active

07321582

ABSTRACT:
Disclosed is an algorithm for dynamically changing an RTS threshold, which is a threshold for RTS-CTS frame exchange, depending on the traffic load in the BSS so as to maximize the MAC throughput of an IEEE 802.11 wireless LAN system. The present invention defines a new performance index based on the total time taken to transmit a frame and the time taken to successfully transmit a data frame. The RTS threshold is dynamically increased/decreased in a predefined range depending on the change in the new performance index.

REFERENCES:
patent: 2002/0037000 (2002-03-01), Park et al.
patent: 2004/0028000 (2004-02-01), Billhartz
patent: 2004/0114562 (2004-06-01), Kim
patent: 2005/0002373 (2005-01-01), Watanabe et al.
patent: 1020020039188 (2002-05-01), None
Giuseppe Bianchi , Performance Analysis of the IEEE 802.11 Distributed Coordination Function (IEEE journal on selected areas in communications, vol. 18, No. 3, Mar. 2000).
Giuseppe Bianchi, IEEE 802.11-Saturation Throughput Analysis (IEEE communications Letters, vol. 2, No. 12, Dec. 1998).
IEEE Communications Letters, vol. 2 No. 12, Dec. 1998, pp. 318.
IEEE P802.11, Wireless LANs, Minutes of High Throughput Study Group Meetings, Jul. 21, 22, 24, 2003, 24 pages.

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