Patent ID: 7613976
Filing Date: 2009-11-03
Classification: H04L

Abstract:
1. A computer implemented method for updating the value of a time-out period (RTO) in a data unit sender that is arranged to send data units to a given data unit receiver, said given data unit receiver implementing a feedback mechanism according to which said given data unit receiver sends feedback messages to said data unit sender, said feedback messages containing information on the receipt of data units sent by said data unit sender, said data unit sender implementing a retransmission mechanism according to which said data unit sender retransmits data units in dependence on said feedback messages, said retransmission mechanism comprising a time-out feature according to which said data unit sender retransmits a given data unit if said data unit sender does not receive within said time-out period a feedback message indicating the correct receipt of said given data unit, and said data unit sender furthermore implementing a response time determining mechanism for repeatedly determining a response time (RTT) indicative of the time that passes between the sending of a data unit to said given data unit receiver and the receiving of a feedback message relating to said data unit from said given data unit receiver, said method comprising: a value setting procedure for setting a new value of said time-out period, said procedure taking into account the n most recent values of said response time, n being a positive integer, the value setting procedure comprising: