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:
Aug. 11, 2015

Filed:

Jan. 21, 2011
Applicants:

Seong-ryong Kang, Seongnam-si, KR;

Byung-suk Kim, Seoul, KR;

Dong-sook Kim, Suwon-si, KR;

Chul-ki Lee, Seoul, KR;

Hong-kyu Jeong, Suwon-si, KR;

Jeong-jae Won, Hwaseong-si, KR;

Inventors:

Seong-Ryong Kang, Seongnam-si, KR;

Byung-Suk Kim, Seoul, KR;

Dong-Sook Kim, Suwon-si, KR;

Chul-Ki Lee, Seoul, KR;

Hong-Kyu Jeong, Suwon-si, KR;

Jeong-Jae Won, Hwaseong-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/26 (2006.01); H04L 12/24 (2006.01); H04L 12/835 (2013.01); H04L 12/801 (2013.01);
U.S. Cl.
CPC ...
H04L 43/0876 (2013.01); H04L 41/0803 (2013.01); H04L 43/16 (2013.01); H04L 47/30 (2013.01); H04L 47/11 (2013.01); H04L 47/29 (2013.01);
Abstract

A method and apparatus manage a buffer of a lower network node in a communication system. A current queue length of the buffer is monitored in every measurement time. A logical region in which the current queue length is included is determined, among a plurality of logical regions included in the buffer. Each of the logical regions corresponds to a queue length determined by using an upper threshold and a lower threshold of a total queue length of the buffer. A congestion state of a network is detected, and a first queue length is readjusted when the current queue length is included in the first queue length which corresponds to a first logical region that exceeds the upper threshold. And a network congestion state signal that represents the detected congestion state of the network is transmitted to the upper network node.


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