一种对3G网络无线链路上ROHC的改进方法(英文)-豆柴文库

您所在位置：网站首页 / 一种对3G网络无线链路上ROHC的改进方法(英文).docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

一种对3G网络无线链路上ROHC的改进方法(英文)
ImprovementofROHCon3GWirelessLink
Introduction:
ROHC,whichstandsforRobustHeaderCompression,isaprotocolthatisusedtocompressheadersofIPpacketstoimprovenetworkperformance.ROHCiswidelyusedonvariousnetworks,includingwirelessnetworks.ThispaperfocusesontheuseofROHCon3GwirelesslinksandproposesanimprovementmethodforROHCtoachievebetterperformanceon3Gnetworks.
Background:
3Gwirelessnetworkshavebeenwidelyusedformobilecommunication,andhaveamaximumtransferrateofupto2Mbps.However,duetothehighdelayandlowbandwidthof3Gnetworks,therearemanychallengesfordatatransmission,suchaspacketlossanddelayjitter.ROHCcaneffectivelyreducethesizeofpacketheadersandreducepacketlosscausedbyheadercompression.However,thecurrentROHCprotocolhassomelimitations,whichleadtoperformanceissueson3Gnetworks.
ROHCPerformanceIssueson3GWirelessNetworks:
TheperformanceofROHCon3Gwirelessnetworksisaffectedbyseveralfactors,includingthetypeoftrafficbeingtransmitted,networklatency,andpacketloss.First,differenttypesoftraffichavedifferentheadersizes,whichaffectsthecompressionratioofROHC.Forexample,TCPtraffichasalargerheadersizethanUDPtraffic.Secondly,thelatencyofthenetworkaffectsthetimeittakesforthepacketheadertobecompressedandtransmitted.Finally,packetlossona3GnetworkreducestheefficiencyoftheROHCalgorithm,aslostpacketsneedtobere-transmitted,whichaddstotheoveralldelay.
ImprovementofROHCon3GWirelessNetworks:
ToimprovetheperformanceofROHCon3Gnetworks,weproposeanewROHCalgorithmthatincludesthefollowingimprovements:
1.OptimalPacketization:
Toensureoptimalcompression,headersshouldbepacketizedinawaythatreducestheeffectoflostpackets.Specifically,theheadersofconsecutivepacketsshouldbemergedintoasinglelargepacket,sothatinthecaseofpacketloss,itismorelikelythattheentirepacketwillbelostandretransmitted,ratherthanonlytheheader.
2.SelectivePacketPrioritization:
Differenttypesoftraffichavedifferentheadersizes,whichaffectsthecompressionratioofROHC.Toaddressthis,weproposeaprioritizationalgorithmthatclassifiespacketsac