小規(guī)模應(yīng)用層組播及其在視頻會(huì)議系統(tǒng)中的應(yīng)用.pdf

1、中南大學(xué)碩士學(xué)位論文小規(guī)模應(yīng)用層組播及其在視頻會(huì)議系統(tǒng)中的應(yīng)用姓名：馮佳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：黃東軍20090510ABSTRACTApplicationlayermulticastachievemulticastinformofmultipleunicastinapplicationlayer，itbypasstherestrictionsofthenetworklayerbysuchway，buttheco

2、stistheconsumptionofnetworkbandwidthresourcesandthesoftwaresystemresourcesTherefore，largescaleapplicationlayermulticastcanonlyachieveonetomanyapplicationsofsinglesource；andmultisourceapplicationlayermulticastalgorithming

3、eneralforsmallscaleapplications，suchassmall—scaledesktopvideoconferencingclassExistingsmallscaleapplication—layermulticastalgorithmforpriorityuseofthegrid，multi—sourcestrategyoftreecover，thealgorithmisverycomplexanddiffi

4、culttoachieve，toomuchadministrativeoverhead；sometreepriorityofthecentralizedalgorithmandtheexistenceoftheprogramthefunctionofthehubthroughahighintegrationofthenetworkstatuschangestakentooptimizethemulticasttree，suchasthe

5、shortcomingsofthestrategyisnotflexibleenoughAndhowthelimitedbandwidthconditions，thebettertomeetthemulti—sourcemulti—mediaapplicationsrequirerealtime，stabilityhasbecomethesmall—scaleapplication—layermulticastalgorithmofth

6、emainissuesthatneedtoberesolvedInthispaper，theapplicationlayermulticasttechnologyprogress，theexistingsmall—scaleapplicationlayermulticastalgorithmsareclassifiedanddetailedanalysisandassessmentoftheadvantagesanddisadvanta

7、gesofvariousalgorithmsislocatedFollowedbyadesktopvideoconferencingsystemsforsmallscaleapplication—layermulticastalgorithmforsmallscalegroupcommunicationneedsandthecharacteristicsofacentralizedgroupmanagementstrategiesint

8、hestrategy，thefocalpointsresponsibleforcollectingandrecordsofmembersofthenodestatusinformation，aswellasinstitutionstoshareinformationmulticasttree；multicasttreenodegroupintheaccessionprocesstousethisinformationtoselectth