The Transmission Control Protocol (TCP) represents the most deployed transport protocol used in the Internet so far. This popularity motivates its presence in wireless networks, including ad hoc networks. These networks are very promising since they make i
resultsareshowninFig.9,whichincludestheresultsfor1,10 owsandusingornottheDAoption.Itiswellknownthatthethroughputdecreasesasthenumberofhopsgohigh.Theprimaryreasonisthatthelongerthepaththehigherdelayforthepacketstoarriveatthedestination.Additionally,thereisthehiddennodeproblemthatbecomesworseforlargernumberofhops.So,theprobabilityofpacketlossissigni cantlyhigherforlargenumberofhopes.More ows,ontheotherside,meansmorecongestionwhichwilldecreasethethroughputaswell.
Throughput vs. Number of hops (1 flow)Throughput (kbits/s) 1600 1400 1200 1000 800 600 400 200
0 0 1 2 3 4 5 6
Number of hops 7 8NewReno Sack NewReno DASack DA
(a)1 ow
Throughput (kbits/s) Throughput vs. Number of hops (10 flows) 1600NewReno 1400Sack NewReno DA 1200Sack DA 1000 800 600 400 200
0 0 1 2 3 4 5 6
Number of hops 7 8
(b)10 ows
Fig.9.End-to-endthroughput