1、分類號(hào)TP393密級(jí)重慶郵電大學(xué)碩士學(xué)位論文論文題目VoWLAN的QoS保障技術(shù)研究(題名和副題名)英文題目—Res—earchonQoSGuaranteeTechnique——over、，oWLAN——碩士研究生里寶塞指導(dǎo)教師蕉望坐j塞壟!學(xué)科專業(yè)亟焦當(dāng)焦!墾盤綾論文提交日期2QQ：鰱：2Q論文答辯日期2QQ：Q!Q4論文評(píng)閱人盎盎堇塾筮重廛盤堂喹絲塞壁塞豆童廛豎墊盤堂答辯委員會(huì)豐席朱冰蓮教授2006年05月20日，熏庚郵電大學(xué)碩士論

2、文摘要AbstractAtpresentThetechnologyofWirelessLocalAreaNetworkgraduallypopularizingandVoiceoverIPrapiddevelopingbothcombinationistheVoWLANwhichhasobtainedpeopleincreasingattentions，andthatcombine懿ideaofVoWIA。Nintroducedhand

3、setw謹(jǐn)lcellnetwo藏providedwithseamlessserviceforUsermobile、，oIp懿iIIturnintocirclesattentionalfocusOriginal取WTuANwassimplyaimed馥tdatatransmissionwithoutdisposingrealtimevoicedeferentmeasures，asaresult，whichcannotprovidewith

4、theQoSofrealthneoperationThereforeIEEE90211TGedealswiththeworkaboutQoS。BasedOEtabriefdescriptionofthedevelopmentofthemonitoringsystem，thepaperworksoverthenextsteptoguaranteevoicetransmissioninthefollowingaspects：detailin

5、gontheIEEE802IIMACaccessmechanism(DCFandPCF)，analyzingtheworkprincipleofthetwomechanismsandaccessmodeofdataaccessingchannelaswellastheshortcomingofthetwomechanismsinregard協(xié)supportingQoSThereout強(qiáng)聰8泛1testaffenhancesont廷epr

6、imaryMACmechanisminordertOsatisfythedelayboundserviceofQoSThentheauthorresearchesanddiscussesonmechanismofl勁CFand薹ICF姍瑗麓E；802。llewhichareabletomeetwiththedelayboundserviceofQos。butstillhavesomeproblemssuch乳slossofCFpolli

7、ng自u(píng)dmesOncethepollingflamesarelost。theterminalwillunableteceiveandsenddataleadingtothedelayandjitterofvoicedataandimpactingcallq嘲ityTheauthorproposesamethodtousetheTokenbuffertemedytheaboveproblemHetakestheexistingtimeo

8、fthevoicepackets趣networkasparameterandenablesterminaltohavethepriorityofgettingthe垃ansmissionchannelbychangingthesizeoftheCWAfterwardshetakesthesimulationonNS2。26p差atformResdtshowsthattheabovemeasureCanensuretheperforman

9、ceofwirelessnetworktosatisfythedemandofcustomSubsequentlytheauthoranalyzestheendtomendQoSmechanismfromtheviewofthewholeIPnetworkConcerningtheintegratingwithUW【，rSceltnetwork，heputsforwardawaytomaptheparameterofRSVPinIntS