ASB多载波负载均衡v2.ppt

At cell setup, as many HS-PDSCH codes as possible will be configured by RNC (meaning that all SF16 codes except the ones blocked by CCH, SCCPCH, HS-SCCH, E-AGCH and E-HICH/E-RGCHs). In case of GBR MAC-d flow the Node B will send an NBAP Required Power for GBR measurement (per SPI) to the RNC to inform that it needs a certain amount of power to guarantee the GBR of all GBR Mac-D flows of a given SPI. This measurement is given per SPI (corresponds to the power needed to ensure the GBR of all Mac-D flows having this SPI). * COPYRIGHT ? 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.  COPYRIGHT ? 2011 ALCATEL-LUCENT SHANGHAI BELL. ALL RIGHTS RESERVED.  智能化的负载均衡策略 ASB WCDMA Product Management 2011.4 AGENDA 负载均衡机制 小区选择、重选 无线资源管理与小区负荷评价 基于硬切换的智能化业务分配（iMCTA） 基于RRC重定向的智能化业务均衡（iMCRA) DC-HSDPA 联通多载波部署建议小结 负载均衡机制 小区选择与重选过程 ? 2G 3G Freq. 2 3G Freq. 1 小区重选 Idle状态下UE监听当前小区的系统信息 网络控制UE的参数门限、测量对象（包括邻区信息） 当服务小区信号质量低于门限时，启动邻区测量 对被测目标小区会进行排队，根据相关准则重选至最好小区 开机后PLMN选择 UE记忆中是否有以前曾使用的频点? 有哪些信誉好的足球投注网站此载波的 P-SCH Yes No 从频段的低端开始有哪些信誉好的足球投注网站频点 No P-SCH 找到P-SCH 小区选择 CPICH Ec/No SintraSearch SinterSearch SinterRAT Measurement on same frequency Measurement on other frequencies Measurement on other RAT Thresholds given as example 重选测量的触发 小区的筛选(S准则)、排序(R准则) 第一步: 选择合格小区: Squal 0 and SrxLev 0 for FDD cells SrxLev 0 for GSM Cells Where: Squal = Qqualmeas – qQualMin = CPICH_Ec/No – qQualMin SrxLev = QrxLevMeas – qRxLevMin – Pcomp = CPICH_RSCP – qRxLevMin – Pcomp Pcomp= MAX (maxAllowedUlTxPower – P_MAX, 0) 第二步: 1st 排序, 基于CPICH_RSCP: Serving cell: Rs = CPICH_RSCP + qHyst1 Neighbor FDD cell: Rn = CPICH_RSCP – qOffset1sn GSM Cell: RnGSM = RxLev - qOffset1sn qHystx:当前小区的迟滞量/防止乒乓效应 qOffsetxsn:邻小区的偏置量/驻留偏好性 第三步: 2nd 排序, 基于CPICH_Ec/No (Only applied if an FDDcell is ranked as the best cell, and qualMeas = CPICH Ec/No): Serving Cell: Rs = CPICH_EcNo + qHyst2 Neighbor FDD Cell: Rn = CPICH_EcNo – qOffset2sn 如果排队后质量最好的小区已不是当前小区，UE 将在以下情况下进行小区重选： a：新小区的信号质量在Treselection 时间R 规则都好于当前小区 b: UE 驻留在当前小区已超过1s 例如