Patent ID: 6118793
Filing Date: 2000-09-12
Classification: H04L

Abstract:
A method of establishing a time period between an end of one data packet transmission on a transmission medium and transmission of another data packet defined as an Inter-Frame Gap (IFG), said IFG being divided into a first portion and a second portion, comprising the steps of:sensing activity on the transmission medium to detect an end of a data packet transmission;establishing an adjustment amount parameter D;presetting an initial length of said first portion and said second portion of said IFG to respective values p1set and p2set;computing an adjustment amount P1 for said first portion of said IFG and an adjustment amount P2 for said second portion of said IFG, where:P1=2N and P2=N if said D=3N,P1=2N+1 and P2=N if D=3N+1,P1=2N+2 and P2=N if D=3N+2,where N is an integer;establishing an adjustment direction parameter F;computing an adjusted length A1 of said first portion of said IFG and an adjusted length A2 of said second portion of said IFG, where:A1=p1set+P1 and A2=p2set+P2 if F represents a first value,A1=p1set-P1 and A2=p2set-P2 if F represents a second value and N<p2set,and A1=p1set and A2=-2*p2set if F represents said second value and N.gtoreq.p2set, where * represents algebraic multiplicationscomputing said IFG time period, where IFG=A1+A2; anddelaying transmission of a data packet by said IFG time period subsequent to said detection of an end of a data packet transmission.