The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 13, 2016

Filed:

Mar. 27, 2013
Applicant:

British Telecommunications Public Limited Company, London, GB;

Inventor:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 72/04 (2009.01); H04W 74/08 (2009.01); H04W 88/08 (2009.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
H04W 72/0413 (2013.01); H04W 74/08 (2013.01); H04W 88/08 (2013.01); H04W 84/12 (2013.01);
Abstract

In a wireless communications network, access points and connected mobile devices transmit data via a radio frequency spectrum channel. When a device has packets for transmission it must check the channel is available before it can transmit the data. Furthermore there is a Transmission Opportunity (TXOP) parameter which limits the maximum amount of time that a device can transmit packets before it must relinquish the channel so that other devices are not locked out. Each device in the network is capable of updating its own TXOP parameters in order to respond to changes in the level of interference and contention in the surrounding area. In this way devices can transmit for longer periods of time when contention is low, while responding to increased network contention by shortening the TXOP to ensure fair access for all other devices in the network.


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