gsm无线资源管理讲解

《gsm无线资源管理讲解》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、RADIORESOURCEMANAGEMENTBSSPARS9RADIORESOURCEMANAGEMENTContents1.TrafficChannelAllocation2.PriorityinTCHAllocation3.FACCHcallsetup4.FrequencyHoppingBB,RF,FreeformRFHoppingFlexibleMAIOManagement5.DRandIDR6.Queuing7.CallDropControl8.DynamicSDCCHRADIORESOURCEMANAGEMENTAl

2、locationstartsaftertheaccessattempthasbeenaccepted.Radioresourcestobeallocated:SDCCH(forinitialsignallingorforchangingthesinallingchannel)TCH(initialTCHorforchangingTCH)SingleSlotTCH/FTCH/HMultislot(HSCSD)TCH/FRADIORESOURCEMANAGEMENTTrafficChannelAllocationTherequest

3、includesthetypeandotherrequirements(orrecommendations)fortherequestedresource:tellswhatkindofresourceitneeds.IncaseofTCH:ThechannelrateTCH/FTCH/HWecanconfigurethreetypesofRTSLinaTRX:permanentFRpermanentHRdualrateThespeechcodecsNormalFullrateNormalHalfrateEnhancedFull

4、rateRADIORESOURCEMANAGEMENTTheprinciplesoftheactualchannelsearchontheBTSresources:efficiencyofthesearchprocedureuniformuseoftheavailableresourcesavailabilityofdifferentchanneltypes.arrangementsformultislotandsingleslotconnections(consecutiveslotsneededinHSCD)Theintra

5、-cellHOisaspecialcase;Innon-HoppingcaseachannelfromanotherTRXissearched.InHoppingcase,achannelfromanotherhoppinggroup(MAlist)issearched.RADIORESOURCEMANAGEMENTIdleChannelInterferenceinterferenceAveragingProcess1...32(SACCHPeriod)boundary1-4-110...-47(dBm)(boundary0/

6、5fixed)TheBTSmeasuresandreportsontheuplinkinterferenceoftheradiochannelswhichhavebeenidleduringthewholemeasurementperiod.IdleTCH’sareclassifiedintofiveinterferenceclassesRRManagementalgorithmassignsachannelfromthelowestpossibleinterferenceclassParametersValueboundary

7、5-47-boundary4-90-boundary3-95-boundary2-100-boundary1-105-boundary0-110-407=>TS4willbeselected!bandInterferenceLevelRADIORESOURCEMANAGEMENTCalculationofmaximumacceptableinterferencelevel(1/2)whenOptimumRxLevUL=MAX_INTF_LEV=RXLEV_UL+(MsTxPwrMax-MS_TXPWR)-CNT

8、hresholdCNThresholdRxLevBalanceOptimumRXLevULMsPwrOptLevelParametersValue0…63dB(0notactive)0…20dB-109…-47/N(TRXlevel)-110…-47/N(cel