卫星移动通信网若干理论和技术研究.pdf

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1、华中科技大学博士学位论文卫星移动通信网若干理论和技术研究姓名：王莹申请学位级别：博士专业：信息与通信工程指导教师：胡修林20080529 华中科技大学博士学位论文静态路由的基础上修正，从而得到平衡网络流量的最终路由。提出了卫星移动通信网中基于蚁群算法的复合被证明是一种NP-hard问题，而蚁群算法在解决表现。复合多播路由算法利用卫星拓扑规则的够在减少运算量的情况下快速收敛到较优解。多播路由算法。多播路由问题NP-hard问题方面具有较好的特点控制蚁群算法的执行，能关键词：卫星移动通信网，星间链路，网络管理，路由算法，网络结构，蚁群算法II 华中科技大学博士学

2、位论文AbstractSatellitecommunicationisgettingmoreandmoreattentionsduringthedevelopmentofcommunicationtechnologies,becauseofthecharacteristicsofwidecoverageandbeingunlimitedtogeographycondition.Satellitecommunicationmodeischangingfromsinglesatellitetosatellitenetworkwiththeemergentdeman

3、dsofbroadbandmobilemultimediacommunicationservicesandtheimprovementofsatelliteequipmentmanufacturetechnology.ComparedwithGEOsatellite,NGSOsatellitehassmallerpropagationdelayandlowerEIRPrequestforpersonalterminals.Sosatellitemobilecommunicationnetworkarchitecturehasthefeaturesofconsi

4、stingofNGSOsatellites,on-boardprocessingandintersatellitelinks.In21thcentury,theobjectofsatellitecommunicationistoprovidebroadbandintergratedpersonalservicewithlowcostIP-basedtechnology.Thenewobjectbringsgreatchallenges.Thisdissertationmainlystudiedthearchitectureandroutingtechnolog

5、yofsatellitemobilecommunicationnetwork.Newconceptwasintroducedduringthecourseofarchitecturedesignfromtheviewpointsofsatisfyingbasicdemand.Atthesametimeacompoundunicastroutingalgorithmandacompoundmulticastroutingalgorithmbasedonantcolonyoptimizationalgorithmwerepresented,consideringt

6、hedifferencebetweensatellitecommunicationnetworkandterrestrialcommunicationnetwork.Themajorcontributionsofthedissertationinclude:Networkconnectivitydegreebasedontimedelayispresentedandappliedtothedesignandevaluationofnetworkarchitecture.Networkconnectivitydegreebasedontimedelaymeas

7、urestheavailablepathswhicharefittoconstrainedconditions,whiletheconceptofconnectivitydegreeintraditionaltopologytheorydescribeswhethernetworkisconnectedifsomenodesorlinksaredeleted.Theproposedconceptdistinguishesavailablenetworkfromreachablenetwork.Thecentralizedmanagementmodelwhic

8、hphysicallyseparate