Patent ID: 9641447
Date: 2017-05-02
CPC Classifications: H04L,H04W

Claim:
1. A method for congestion control in a network node of a communication network, said network node being adapted to handle a plurality of data connections for conveying data packets travelling between a core side and a terminal side of said communication network in compliance with an acknowledgement-based data transmission protocol for delivering a data stream from a sending host to a receiving host, the method comprising, in said network node: detecting a condition indicative of a congestion for any of said plurality of data connections; selecting, among said plurality of data connections, a data connection for which a bit-rate reduction is to be caused; determining a number (X manipulating each of said determined number of data packets in a way such that the receiving host upon receipt of the manipulated data packets will respond to the sending host with an indication that the manipulated data packets have not been duly received, so as to initiate the reduction of the bit-rate for the selected data connection, wherein said plurality of data connections are associated with respective weights, w, for Quality-of-Service (QoS) bit-rate differentiation, and wherein selecting the data connection for which a bit-rate reduction is to be caused comprises: