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:
Nov. 07, 2017

Filed:

Mar. 09, 2016
Applicant:

Electronics and Telecommunications Research Institute, Daejeon, KR;

Inventors:

Seung Keun Park, Daejeon, KR;

Sungjin Yoo, Daejeon, KR;

Jung Sun Um, Daejeon, KR;

Hoiyoon Jung, Daejeon, KR;

Hyung Do Choi, Daejeon, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 74/08 (2009.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
H04W 74/085 (2013.01); H04W 84/12 (2013.01);
Abstract

A wireless device of a communication system randomly selects a backoff counter at a contention window interval corresponding to a contention window size that is determined according to a backoff stage, attempts packet transmission, when the backoff counter becomes 0 while reducing the backoff counter, when a radio channel is in an idle status, and increases the contention window size while increasing the backoff stage by 1 according to a first predetermined condition. In this case, as the backoff stage increases, a contention window size has a concave down increasing form.


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