nodeb设备介绍第三章bburru软件结构

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1、NodeB设备介绍第三章BBURRU软件结构PrinciplesofsoftwaredesignLayeringprinciples:toimprovesystemreuse,reducesystemcomplexity,andreducedevelopmenteffort・Intermsoffunctionality,theNodeBsoftwaremainlycompletesthesignalingprocessing(resourcemanagement,NBAPmessageprocessing),businessframe

2、processing(FPandBCH),andoperationsmaintenancethreelargefunctions・InadditiontosupporttherealizationofthefunctionofeachNodeBsoftware,NodeBsoftwarealsoneedtocompletesomebasicmodulefunctions,including:communicationprotocolstackandATMlinkmanagementoftransmissionnetworkfuncti

3、ons,synchronoustimingfunction,systemplatformsupportfunctions,etc・Thesefunctionsprovideservicestothetopsoftware・Thedebuggingprinciple:considerthatdebuggingrequirementsfordebuggingrequirementsinallstagesshouldbeeasytoconfigure一一enablingandclosing・Enabletheabilitytodebugfu

4、nctionswithoutaffectingsystemperformance・Softwaremodulardesign-functionalmoduleimplementationBBU/RRUsoftwareUSESmodulardesign,anditsfunctionalmodulesaredividedby:TheletterprocessingisdistributedonthemaincontrolboardandthestationeryboardBusinessframeprocessingisdonebythe

5、trustboardTheoperationmaintenancefunctionisdistributedinalltheCPUboardsandRRUintheBBUThereisanATMlinkcontrolentityonthemaincontrolboardandtheRNCinterfaceboard,whichmanagestheATMlink,includingAAL2/AAL5Softwaremodulefunction-signallingprocessingfunctionThemainfunctionofsi

6、gnalingprocessing:A.NBAPprocesscontrolB.Resourcemanagement:includingLocalCellandchannelrelatedresourcesmanagementThesignalingprocessingfunctionisperformedbyMCBandCPBTheperformanceoftheCBCBisasfollows:MaintainpublicchannelresourcesMaintainIubcommunicationportresourcesUse

7、rrelevantinformationEndtheNBAPagreementandcompletetheNBAPprocessThefunctionofCPBistocompletetheallocationandreleaseofchannelresourcesandrelatedbusinessentitiesunderMCBcontrolSoftwaremodulefunctionality-businessprocessingcapabilityBusinessprocessingThebusinessprocessingf

8、unctionisdividedintotwocategoriesbasedontheprocessingofNodeB:A.CHbusiness:Iubinterfacesysteminformationupdates