基于軟交換技術(shù)的下一代網(wǎng)絡(luò)構(gòu)架的研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文基于軟交換技術(shù)的下一代網(wǎng)絡(luò)構(gòu)架的研究姓名：葉濤申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械制造及其自動(dòng)化指導(dǎo)教師：郭順生20060201武漢理【夫?qū)W碩士學(xué)位論文ABSTRACTAtpresent，withtherapiddevelopmentoftheIntemetandtheincreasingdemandfornewservices，theconvergenceofconventionalPSTN／ISDNandIPnetw

2、orkhasbecomeaninexorabletrendAstheSoflSwitchbasedNGNtechnologycanseamlesslyimplementthisconvergence，whichhasalsobecomethefocusinindustrystudyWithSoflSwitchtechnologythemaximumprotectionwillbegiventotheexistinginvestmento

3、ftelecommunicationnetworkandthesmoothtransitionfromtheexistingtelecommunicationnetworktoNGNwillbeacceleratedThatis，usingSoflSwitch，wecaneasilyachievetheinterworkingofconventionalPSTN／ISDNandtheInternetwithnoimpactonthese

4、rvicesoftheexistingnetworkNextGenerationNetworksbasedonIPpacket；providingtelecomservices；usingvariouskindsofbroadbandabilitiesandtransferstechnologysupportingqualityofService，whichhassomeadvantages，suchasseparatingofbetw

5、eenservicefunctionsandtransfertechnologyseparatingofbetweencallcontrolandservicecontrol，andcanprovidecomprehensiveservicesofaudio、videoanddataatthesametimeInthedevelopingprocessofNGN，theIPnetworkwillworkasthecorenetworka

6、ndconventionalPSTN／ISDNwillbecomeanedgenetworkTheSoflSwitchequipmentplaysacorepartofNGNnetwork，whichbeabletoofferthefunctionsusedforservicecontrolandconnectingcontrolwithrealtimedemandsTheSofiSwitchiscertainlythecenterof

7、nextgenerationnetwork，SOitwillbemaincontentstudiedinNGNarchitectureThepaperwillfirstlyintroducethebackgroundofnextgenerationnetworkdevelopment，thepresentlydomesticandforeignresearchsituationofNGN，aswellasgeneralcontentof

8、studiesofthisarticle；thensomebasicconceptsofNGNandtherelateddefinitionwillbegiventoUS，andfollows，thesystemstructureofnextgenerationnetworkwillbedescribedLatterlythearticlewilltellUShowNGNCanprovidesomesuperioritywithchar

9、actersandfeaturesinvolvedjnitwhicharedifierentfromthetraditionalnetworkNGNhasbeendividedintofourdifferentfunctionlayers，theyareseparatelyaccessfunctionlayer、transferfunctionlayer、controlfunctionlayerandservicefunctionlay

10、erAmongthem，embarksfromtheservicetypedemand，unionthecurrentnetworktechnologydevelopmentcondition，whenanalyzingload—bearingnetworkplananddesigningnextgenerationnetwork，someessentialfactorsshouldbeconsiderable；Thatis，asthe