Method for improved congestion detection and control in a...

Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network

Reexamination Certificate

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C370S310000

Reexamination Certificate

active

08000249

ABSTRACT:
The invention discloses a method for detecting and controlling traffic congestion in a wireless telecommunications system (100, 300, 400) comprising at least a first node (130, 330, 430) such as a Radio Base Station, and at least one second node (110, 310, 410) such as a Radio Network Controller, the system also comprising a Transport Network, TN (120, 320, 420), for conveying traffic between said first and second nodes, in which system (100, 300, 400) the traffic can comprise one or more flow. The method comprises the use of one flow control function (315, 415) per each of said flows, said one flow control function (315, 415) comprising a congestion detection and control function. In addition, the congestion detection function acts to reduce the traffic on said flow before the system becomes congested.

REFERENCES:
patent: 2002/0132607 (2002-09-01), Castell et al.
patent: 2003/0156542 (2003-08-01), Connor
patent: 2004/0032827 (2004-02-01), Hill et al.
patent: 2004/0071086 (2004-04-01), Haumont et al.
patent: 2005/0239435 (2005-10-01), Ikeda et al.
patent: 2007/0015525 (2007-01-01), Beming et al.
patent: WO 02/052886 (2002-07-01), None
patent: WO 2006/071174 (2006-07-01), None
3GPP TR25.902 v6.0.0 Technical Specification Group Radio Access Network; lub/lur congestion control (Release 6) Sep. 2005.
International Search Report dated Oct. 15, 2007 (4 pages).

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