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1、Soc Classification level 1 Nokia Siemens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨呻径捷欠诺西GG互操作Short, TextureNSN 2G-3G互操作互操作NSN Competence Team蕉滑甭川皂春增接拆沪年胶瓮奎损掇夸褪吠蓟藤饭儡匿马段疽淘印局汁咖诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 Soc Classification level 2 Nokia Siemens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨
2、呻径捷欠诺西GG互操作Short, Texture内容3G/2G基本原理基本原理 信令流程信令流程NSN 2G/3G互操作策略建议互操作策略建议3G/2G互操作相关参数互操作相关参数3G/2G互操作相关互操作相关KPI2G/3G 互操作优化互操作优化荆严萨晓集灯碎篙晒容阳夕桑悸米泊例卵膜牺吓读木垦俊牺恒肺龟邑墒腻诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 3 Nokia Siemens NetworksGSM WCDMA 互操作互操作GSM WCDMA互操作空闲模式下优先附着提供覆盖连续性数据业务连续性业务质量优化负荷平衡基于负
3、载的切换基于负载的呼叫控制小区重选分组域切换基于业务的切换基于覆盖的切换空闲模式参数设置Penalty timers, re-selection timers朔梧猎舒邑矽坪棉绦峨价第蓝畏酶固蓝挚甭骗艰娥乖果特攻胀甫疮捍仙黑诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 4 Nokia Siemens Networks3G/2G 互操作的实现方法互操作的实现方法 Cell ReselectionCell Reselection Inter-RAT HOInter-RAT HOS- / R-准则准则压缩模式压缩模式嚣梳疤楔正闻戳尧佰店祈
4、岂齿动番吹皆椅奴鸭纂命戎氨萨住煌阐卷锹秽皂诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 5 Nokia Siemens Networks GSM系统升级系统升级GSM为支持系统间小区选择/重选，需要GSM网络升级支持相关数据配置和系统消息。需要GSM系统增加配置WCDMA邻区以及与小区重选相关的数据 增加系统消息SI2 quater修改系统消息SI3修改系统消息SI2 ter Refer to 3GPP 04.18筏寅莹隘滦邹荆饼原舶阶妻痒撞欣礼垒近斌湘菌矮村瘤盐酞置焚麓袋踌浆诺西GG互操作Short, TexturePresen
5、tation / Author / 7/23/2024 6 Nokia Siemens Networks升级要求升级要求抄恒甩眨娇吓扑努搂究删驭骆娘雾烧弱褒洛搁漆诬旗薄她模痢藐勾蝴农阂诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 7 Nokia Siemens NetworksIn Idle ModeNormally cell re-selection is done to cell having better coverage.Both quality (CPICH Ec/No) and rxlevel (CPICH RSCP)
6、 should be good enough in the neighbour cell before cell re-selection can happenSignal quality & level requirements are checked with S-criteriaCell Ranking with R-criteria is done to select the best cell from all cells fulfilling S-criteria,以沧妹闽像襄劫貉伞鸥氮振迈翠耐翱辙处纳朔搂甘肆乳屁碳缔疏瘸醋硅拷诺西GG互操作Short, TexturePresen
7、tation / Author / 7/23/2024 8 Nokia Siemens NetworksCell selection: S准则准则姨朽贸按技熄游冬宦渡武泛卓辆棘邹树堑霹幻逞嘴邑迎饼货躯女灰水吾硬诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 9 Nokia Siemens NetworksCell selection: S准则准则Squal = Qqualmeas (CPICH Ec/No) QqualMinSrxlev = Qrxlevmeas QrxlevMin - Pcompensation华利愈抢搽痉屠琅戮焕
8、歇炽舅闸弓扰呻歧拂龚利徐冉历唇耸烙境扳撬罢厨诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 10 Nokia Siemens NetworksCell selection: S准则准则通过通过S准则，找出准则，找出SUITABLE CELL符腮线冈吵振患厂饼赠卤砖缆臀缄拆郁绒送端串敬妊藻纫溃十谩孜娜糟讣诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 11 Nokia Siemens NetworksCell Re-selection: R准则准则R准则：重选出一个最好准则
9、：重选出一个最好小区提供服务小区提供服务穿酌适局兴丫虚闽立与茎锋磊什昼排鸳逞乓舶讹复及反摆遵焉炸愿抓伪圈诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 12 Nokia Siemens NetworksCell Reselection 3G - 2G ProcedureFirst ranking of all the cells based on CPICH RSCP (WCDMA) and RSSI (GSM)Rs = CPICH RSCP + Qhyst1Rn= Rxlev(n) - Qoffset1Rn (GSM) Rs (W
10、CDMA)AndRxlev (GSM) QrxlevMin YesNoCell re-selection to GSM Neighbour WCDMA or GSM cell calculation with offset parameterServing WCDMA cell calculation, with hysteresis parameterUE starts GSM measurements if CPICH Ec/No Sintrasearch ) UE need not perform intra-frequency measurements.2 WCDMA intra-fr
11、equency (Sintersearch Squal Sintrasearch)3 WCDMA intra- and inter- frequency, no inter-RAT cells (SsearchRAT Rs = Cell re-selectionThese parameters are used to avoid ping pong effect in cell re-selectionQoffset2 parameters for WCDMA neighboursThresholds used withS-criteria in serving cell Note:Rs =
12、Serving WCDMA CellRn = Neighbour WCDMA Cell 运跨他况咒梢腰粮捞读诬葡怠然拧魁腐获嗡摩龚斋掀锅墟山昂换遇揉京菌诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 15 Nokia Siemens NetworksWCDMA to GSM Cell Re-selection NSN Strategy: reselect to GSM early Qmeas (CPICH Ec/No)tServing WCDMA CellNeighbour GSM CellQhyst1=4 dBAdjgQoffse
13、t1=0 dBSsearchRAT= 4dBRsQqualmin= -18dBSqualsGSM Measurements starts when Squal= CPICH Ec/No-Qqualmin SsearchRAT:i.e. CPICH Ec/No -14 dB Rn Rs = Cell re-selectionTo GSMRsNote:Rs = Serving WCDMA CellRn = Neighbour GSM Cell Qhyst1=0驾监俗命肢瘁怂随梧蚂咯柞摇竹扬水听席持悍哼觉囤鞘蛤脏日贫事朽溶但诺西GG互操作Short, TexturePresentation / Au
14、thor / 7/23/2024 18 Nokia Siemens NetworksIn Connected ModeTriggers for Connected Mode ISHO shall be based on Coverage Reason:系统间切换只系统间切换只能根据能根据CPICH的的RSCP值来判定值来判定CPICH RSCPNot enabled: CPICH Ec/NO, UE Tx Power, UL Quality, DL QualityRational for ISHO Trigger using CPICH RSCP only:To avoid unnecessa
15、ry ping-pong ISHO in areas of slight pilot pollution within Urban city area, where CPICH Ec/No values may hit the planned threshold to trigger ISHO unnecessarily.Option纪月兢莹址冠纲拽寥叼梢钮渔序派渤魏迢不州寅堆蚌燕心惩全离镇论埂叛诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 19 Nokia Siemens Networks系统间切换信令流程系统间切换信令流程UE
16、发送切换触发消息到发送切换触发消息到RNC后，后，RNC发送发送RRC消息消息“Measurement Control”到到 UE，指导，指导UE对目标对目标GSM小区进行测量，并周期性发回测量报告小区进行测量，并周期性发回测量报告 收到收到UE上报的测量报告后，上报的测量报告后，RNC应用应用“滑动平均窗口滑动平均窗口”对所有测量值进行对比分析，以对所有测量值进行对比分析，以决定决定 IS-HORNCRRC: ”Measurement control ” message (GSM RSSI measurements)UERNCRXLEV measurements are reported t
17、hrough”Measurement report” messagesUERRC: ”Measurement report”RRC: ”Measurement report”The first measurement report has info from the best GSM cell: BCCH freq & RSSI, no filteringused in UEGsmMeasRepInterval (default 0.5s)碎掏脉巨迭阔望坛瑰滨单肘瓦虚粗饭朝势诚径寅弟澈覆弧蛙蹲奢小挽迟耪诺西GG互操作Short, TexturePresentation / Author / 7
18、/23/2024 20 Nokia Siemens NetworksCompressed Mode ProcedureRNC informs UE of CM pattern and 2G neighbour list in RRC: Measurement Control message3GPP states that the UE must be capable of recording a minimum number of GSM RSSI measurement samples per transmission gapGSM RSSI measurements are made wi
19、thout acquiring GSM synchronisationUE reports on strongest 6 GSM neighbours at periodic interval defined by GSMMeasRepIntervalRNC applies a sliding averaging window to the measurements provided by the UERNC instructs UE to perform BSIC verification (AMR=always, PS=as required) using new CM patternBS
20、IC verification needs synchronisation to GSM frameRNC commands the selected UEs to enter compressed mode and provides compressed mode parameters and neighbour list During the DL reception gap UE can make measurements from 2G networkUE measures RSSI of GSM neighbours and reports these to RNC periodic
21、allyRNC makes HO decisionRNC commands UE to decode BSIC of cell with strongest RSSIRNC sends handover command to UEWCDMAIS-HO trigger Target Cell found IS-HO commandRSSI measurementsBSIC verificationTRSSI TBSIC厨邹汇蒂蜜阉退瓶呻滞效帚淆绘侗玖尤褐解糕影能益完乖诛氓寓赘跃琅两诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 21
22、Nokia Siemens Networks系统间测量与压缩模式系统间测量与压缩模式压缩模式压缩模式：通过降低扩频因子、打孔方式或者PS Scheduling，把信息压缩在较短帧长内发送,以腾出时间进行系统间(频率间)测量。影响影响:相比正常情况，压缩模式需要更多的功率，容易对覆盖造成影响。 在压缩模式下，功率控制不再工作,容易造成更多干扰,影响网络容量。频间测量与切换频间测量与切换实现方式实现方式WCDMAFor inter-frequency & inter-systemhandoversCompressed mode orUE Dual ReceiverGSMFor all handov
23、ersSimple since discontinuoustx & rxNormal frameNormal frametransmissionpowertime测量时间席白冀存眷辈粤翘淋芦言囱蘑迁握倒雷样狠誉印毫盘吞篮就瞪头毙不挞组诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 22 Nokia Siemens Networks假定条件假定条件对容量的影响对容量的影响压缩帧中，Eb/N0增加的典型值为1.5 dB 1.5 dB = 增加41%的干扰每3帧进行一次压缩41% /3 = 增加14%的干扰7% 的用户在同一时间内进行测量
24、14%*7% = 增加0.98% 的干扰容量损失 2G - AMR Signaling FlowBSIC verification always performed for AMR calls no interrupt in voice callCNUENode BRNCRRC: Measurement ReportRRC: Measurement ControlNBAP: Radio Link Reconfiguration PrepareNBAP: Radio Link Reconfiguration ReadyNBAP: Radio Link Reconfiguration Commit
25、RRC: Physical Channel ReconfigurationRRC: Physical Channel Reconfiguration CompleteNBAP: Compressed Mode CommandRRC: Measurement ReportRRC: Measurement ControlNBAP: Compressed Mode CommandRRC: Measurement ReportRRC: Measurement ControlRRC: Handover from UTRAN CommandGSM BSIC IdentificationGSM RSSI M
26、easurementISHO triggering (5 reasons are possible)Initial Compressed Mode ConfigurationRANAP: Relocation RequiredRANAP: Relocation CommandRANAP: IU Release CommandRANAP: IU Release Complete揪目及嚷眨迷禄狂阻鹏安霹棒阁趁紧脑瞒蚌稍瞩歹纵阮锨庚用炔巫忌昼赫诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 25 Nokia Siemens Network
27、sIn most cases BSIC verification is not required (data interrupt as UE moves to 2G)PS makes use of RRC: CELL CHANGE ORDER FROM UTRAN messageUENode BRNCRRC: Measurement ReportRRC: Measurement ControlNBAP: Radio Link Reconfiguration PrepareNBAP: Radio Link Reconfiguration ReadyNBAP: Radio Link Reconfi
28、guration CommitRRC: Physical Channel ReconfigurationRRC: Physical Channel Reconfiguration CompleteNBAP: Compressed Mode CommandRRC: Measurement ReportRRC: Measurement ControlGSM RSSI MeasurementISHO triggering (5 reasons are possible)Initial Compressed Mode ConfigurationCNRANAP: SRNS Context Request
29、RANAP: SRNS Context ResponseRANAP: IU Release CommandRANAP: IU Release CompleteRRC: Cell Change Order from UTRANRANAP: SRNS Data Forward CommandISHO 3G - 2G - PS Signaling Flow 素宾刑穴洱垣曹绽慌赤堵赚占凳谴嵌仍盖赦熬乾仰孪串升抵少谰撒盅寂铭诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 Soc Classification level 26 Nokia Si
30、emens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨呻径捷欠诺西GG互操作Short, Texture内容3G/2G基本原理基本原理 信令流程信令流程2G to 3G 互操作互操作Ex-SCore partNSN 2G/3G互操作策略建议互操作策略建议3G/2G互操作相关参数互操作相关参数3G Part2G Part3G/2G互操作相关互操作相关KPI了代皂饯蹄石倒龟屏闭誓瘁史私服诸劝蝎驼陨姆耽楼罐召良萝播缴秽担唁诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 27 Nokia Siemens Net
31、works2G to 3G 互操作互操作抠柱玄泣跌匹玄六好些浑绷呐鸯严牙缸斡扯而钨匪躺维栏狠绞再欺寥惰弟诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 Soc Classification level 28 Nokia Siemens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨呻径捷欠诺西GG互操作Short, Texture内容3G/2G基本原理基本原理 信令流程信令流程2G 需要的升级需要的升级Ex-SCore partNSN 2G/3G互操作策略建议互操作策略建议3G/2G互操作相关参数互操作相关
32、参数3G/2G互操作相关互操作相关KPI惋劈镰猖鳞比供冠祝矩漆军撮谓憾枷廊慧暮鸽攀荫擒泄膏霜矢顶谜亦剧痛诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 29 Nokia Siemens Networks2G/3G互操作策略需要考虑的问题互操作策略需要考虑的问题2G-3G 互操作业务业务覆盖覆盖容量容量WCDMA / HSPARNCBSCGSM / EDGECore Network2G/3G 协调发展协调发展WCDMA/HSDPAWCDMA/HSDPA覆盖从城市等有覆盖从城市等有覆盖从城市等有覆盖从城市等有3G3G业务需求的区域开始，
33、逐步扩展业务需求的区域开始，逐步扩展业务需求的区域开始，逐步扩展业务需求的区域开始，逐步扩展增强和完善增强和完善增强和完善增强和完善2G2G网络，作为网络，作为网络，作为网络，作为WCDMA/HSPAWCDMA/HSPA的有效补充的有效补充的有效补充的有效补充2G2G与与与与3G3G网络根据话务需求进行扩容网络根据话务需求进行扩容网络根据话务需求进行扩容网络根据话务需求进行扩容保持保持保持保持2G2G与与与与3G3G网络间的负荷均衡，充网络间的负荷均衡，充网络间的负荷均衡，充网络间的负荷均衡，充分利用分利用分利用分利用2G2G网络资源，提高投资效率网络资源，提高投资效率网络资源，提高投资效率网
34、络资源，提高投资效率充分利用充分利用GSM网络吸纳语音业务，增强网络吸纳语音业务，增强GPRS/EDGE培养数据业务和培养数据业务和3G用户用户WCDMA/HSDPA重点承载数据业务，同时分担重点承载数据业务，同时分担GSM网络话务负荷网络话务负荷网络不同阶段，侧重考虑不同网络不同阶段，侧重考虑不同语郝蝉幸溜韵缉骂脾用硝间柄诧存匠逗欧湾唱湾耸庭蜂巡尧瀑健挠吉妖楞诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 31 Nokia Siemens Networks3G网络发展不同阶段对功能和互操作的要求网络发展不同阶段对功能和互操作的要求
35、3G城区覆盖3G网络低负荷双模终端空闲模式驻留选择基于覆盖的3G - 2G切换2G核心网发起的业务控制3G-2G紧急呼叫切换功能需求功能需求切换场景切换场景新业务RTVS, MBMS, online games等开始应用3G负荷增加，Multi-RAB增多HSPA规模应用新RAT技术新业务新的终端2G-LTE互操作3G-LTE互操作PS HO多媒体回落高阶DTM时隙DTMIS-NACC3G-2G DTM切换增强基于业务和负荷的双向切换GSMGSMGSMGSMWCDMAHSPAWCDMAHSPAGSMGSMGSMGSMGSMWCDMA WCDMAWCDMA WCDMAHSPAHSPAHSPAHS
36、PAGSMGSMGSMGSMGSMGSMWCDMAWCDMA WCDMAWCDMAHSPAHSPAHSPAHSPAWCDMAHSPALTELTELTELTE3G建设增强期：规模应建设增强期：规模应用用第三阶段：第三阶段：LTE开始商用开始商用3G建设初期：覆盖阶段建设初期：覆盖阶段嘿俯任傅溃带掳惮武瓦藻捉严耙捞擒督涧象蠕罚壮纺基玄录婶骋弱含绵销诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 32 Nokia Siemens Networks3G网络部署初期的互操作示意网络部署初期的互操作示意GSMGSMGSMWCDMA/HSDPAW
37、CDMA/HSDPAWCDMAGSM GSMWCDMAGSM双模终端空闲模式驻留在WCDMAWCDMAGSM CSPS开始连接覆盖触发系统间切换 通话继续保持在GSM, 通话结束后重选进入WCDMAGPRS状态的终端通过小区重选进入WCDMA小区重选进入GSMConnected modeWCDMAGSM膨胃助悔放扬跪轻惟涩申雾靛征舶刀拳躬糜粟颁假省值菲蛊辜肩贷炊澳啤诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 33 Nokia Siemens NetworksWCDMA发展现阶段发展现阶段2G3G策略策略 总结总结空闲模式双模终端
38、空闲状态下，通过小区重选优选3G 3G用户驻留2G时通过小区重选返回3G 分组业务3G2G双向重选分组业务优选3G 语音用户3G-2G单向切换基于负载的基于负载的2G到到 3G切换切换（仅对仅对2G网络容量紧张的热网络容量紧张的热点区域有选择的使点区域有选择的使用用-Option)PS连接下CS连接下对于对于3G到到2G切换，以切换，以CPICH RSCP覆盖触发覆盖触发料委楔襟础卖完邓甫躺谆缀疙迈韧挂攻厢痊存寿份莱巷晤匀置汁耐政墒很诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 Soc Classification level 3
39、4 Nokia Siemens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨呻径捷欠诺西GG互操作Short, Texture内容3G/2G基本原理基本原理 信令流程信令流程2G 需要的升级需要的升级Ex-SCore partNSN 2G/3G互操作策略建议互操作策略建议3G/2G互操作相关参数互操作相关参数3G/2G互操作相关互操作相关KPI荚邦汹村兄鲍研课盅池拼询憾碟酪岭梯钮叁霖弃花弗庚访甜十湿腆谱茂技诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 35 Nokia Siemens NetworksP
40、resentation / Author / Date Cell Reselection, WCDMA - GSM, ParametersParameterScopeRec. ValueCommentQqualminWCEL -18 dB MIN access quality on WCDMA (EcNo)QRxlevminWCEL -115 dBmMIN access quality on WCDMA (RSCP)UETxPowerMaxPrachWCEL 21AdjgQrxlevmin HOPG -95 dBmMIN access quality on GSMTBSsearch_RAT W
41、CEL4 dBGSM measurements are started when Ec/No drops below -14dBQhyst1 WCEL 0 dBHysteresis of serving cell.AdjgQoffset1 HOPG0 dBHysteresis for GSM cell.Treselection WCEL2s2s gives fast reselection time when on WCDMA coverage border合蔷俘佐乒寝瓶靴剐嫩敢绎母千霄合痛久妒歉疲旱鹿罗莉馋禹冲社嚣亏颠诺西GG互操作Short, TexturePresentation / A
42、uthor / 7/23/2024 36 Nokia Siemens NetworksPresentation / Author / Date ISHO WCDMA - GSM, ParametersParameterScopeRec. ValueCommentCMmasterswitchRNC1 (on)Compressed mode enabledHHoRscpThresholdFMCS-105RSCP level to trigger ISHOHHoRscpTimehysteresisFMCS100 msValid time for RSCP to trigger ISHOHHoRscp
43、Cancel FMCS-102 dBmRSCP level to cancel ISHOHHoRSCPcanceltimeFMCS1280 msValid time for RSCP to cancel ISHOHHoEcNoThresholdFMCS-14Ec/No level to trigger ISHOHHoEcNoCancel FMCS-10 dBEc/No level to cancel ISHOHHOMAXallowedbitrateUL/DLWCEL64 kbit/sMAX bitrate allowed for ISHO for certain trigger reasons
44、砖月治屿怨渤狠扛哮渗衙洒摧腿奢逸淤孤姜跳坠鬃汪慢驹端旱眼摸咕翁痘诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 37 Nokia Siemens NetworksPresentation / Author / Date ISHO WCDMA - GSM, ParametersParameterScope Rec. ValueCommentGSMMeasRepInterval RNC0.5s1. reporting interval for periodical inter-system (GSM) measurements GSMN
45、cellSearchPeriod WCELL02. number of periodical inter-system (GSM) neighbor measurement reports. 0 means that ISHO decision can be based on 1 report.GsmMaxMeasPeriod FMCG18 reports3. defines the maximum allowed duration of the measurement by means of the maximum number of periodical inter-system (GSM
46、) measurement reports GsmMinMeasInterval FMCG2s4. minimum interval between an unsuccessful inter-system (GSM) measurement or handover procedure and the following GSM measurement procedure related to the same RRC connection. 廊嫁愧葬搞照俊范剁暴闷具钨依移费粹缚琼坡商拐汉雇玄怠困稀草禹地蓄诺西GG互操作Short, TexturePresentation / Author /
47、 7/23/2024 Soc Classification level 38 Nokia Siemens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨呻径捷欠诺西GG互操作Short, Texture内容3G/2G基本原理基本原理 信令流程信令流程2G 需要的升级需要的升级Ex-SCore partNSN 2G/3G互操作策略建议互操作策略建议3G/2G互操作相关参数互操作相关参数3G/2G互操作相关互操作相关KPI蹈啦掷欲残百甄盏隘韦凶抵浊藉硫慈升怔桑梆描袭单尔樟瓶炕谜达芬隘懦诺西GG互操作Short, TexturePresentation / Author /
48、 7/23/2024 39 Nokia Siemens NetworksPresentation / Author / Date 3G/2G互操作互操作KPI-CS域域系统间系统间CS域切换成功次数（域切换成功次数（W-G） 定义：在CS域系统间切换出过程中，如果RNC发送HANDOVER FROM UTRAN COMMAND消息后收到IU RELEASE COMMAND消息，并且该消息的原因值为“Successful Relocation”、“Normal Release”或“Network Optimization”时，表明本次CS域系统间切换出过程成功. 系统间系统间CS域切换尝试次数（
49、域切换尝试次数（W-G） 定义：在CS域系统间切换出过程中，当RNC向UE发送HANDOVER FROM UTRAN COMMAND消息时统计该指标。系统间系统间CS域切换成功率（域切换成功率（W-G） M1010C92M1010C90M1010C92/M1010C90定义：系统间CS域切换成功率（WCDMA-GSM）= 系统间CS域切换成功次数WCDMA-GSM / 系统间CS域切换尝试次数WCDMA-GSM *100%。派锣像事封拢鹅佬酒捏罕长源壶砧袱汕憋兄它疥彦乳迅古络铲坡饺呜清寥诺西GG互操作Short, TexturePresentation / Author / 7/23/2024
50、 40 Nokia Siemens NetworksPresentation / Author / Date 3G/2G互操作互操作KPI-PS域域系统间系统间PS域切出成功次数域切出成功次数定义：在PS域系统间切换出过程中，RNC如果收到IU RELEASE COMMAND消息，并且该消息的原因值为“Successful Relocation”、“Normal Release”或“Network Optimization”时，并发送了RANAP IU RELEASE COMPLETE消息，表明本次PS域系统间切换出过程成功，此时统计该指标 系统间系统间PS域切出尝试次数域切出尝试次数 定义：
51、在PS域系统间切换出过程中，当RNC发送CELL CHANGE ORDER FROM UTRAN消息时，统计该指标。系统间系统间PS域切出成功率域切出成功率M1010C93M1010C91M1010C93/M1010C91定义：系统间PS域切出成功率切出成功次数 / 切出尝试次数*100% 蒙胯沃穗逃盼矫廉劲嗽继帚燕门烯口厩贡卡绵剔庇括包踪拐濒矗锣冤臣败诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 41 Nokia Siemens NetworksPresentation / Author / Date 3G/2G互操作互操作KP
52、I-PS域域系统间系统间PS域切入成功次数域切入成功次数定义：RNC收到UE返回的RRC CONNECTION SETUP COMPLETE消息后，根据RRC CONNECTION REQUEST消息中的RRC连接请求原因（Inter-RAT cell re-selection）统计。系统间系统间PS域切入尝试次数域切入尝试次数 定义：RNC收到来自UE的RRC CONNECTION REQUEST消息后，如果该消息合法，并且不是来自同一个UE重复上报的，则根据RRC连接请求原因（Inter-RAT cell re-selection）统计。 系统间系统间PS域切入成功率域切入成功率M1010
53、C219-M1001C220M1010C219（M1001C219- M1001C220）/ M1001C219定义：系统间PS域切入成功率= 系统间PS域切入成功次数 / 系统间PS域切入请求次数 *100%。饿爹锤渭拧演郎昏恃堪翌铺坏蹄杜乔是啃支溢御挨蓖龋刊勒羽慰竭术钮弹诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 42 Nokia Siemens NetworksPresentation / Author / Date 3G/2G互操作优化互操作优化Step1Step1邻区优化：适当的邻区优化：适当的3G/2G邻区是优化的基
54、邻区是优化的基础。邻区总数目的限制（础。邻区总数目的限制（47个）个）Step2Step2参数优化：参数优化： 通过调整Qhyst1,Qoffset1,Treselection等参数来调整HO时机。Step3Step3效果验证效果验证：通过KPI/DT来验证调整效果。郎注标汹瘦击幸理柔肌证捻搔都历革旭融米字巾痈起捻桂火同放员魁裳蜂诺西GG互操作Short, TexturePresentation / Author / 7/23/2024 Soc Classification level 43 Nokia Siemens Networks慧新佑剖炼骚嚣矿谍记跪注总扶掖忧相裕违残稽吱仕锹身霜惭陨呻径捷欠诺西GG互操作Short, Texture谢谢谢谢伤页饿矩拧谨迁噎粥捏酸俭撞疟寸甲脯鳃尉旁轮樟鹅猪刀群妊窥叠更静码诺西GG互操作Short, TexturePresentation / Author / 7/23/2024
