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MR基础知识1.MR是什么MR就是measurement report，⼿机报上来的测量报告，⽹优可以根据这个确定某些⽚区的覆盖情况测量是TD-LTE系统的⼀项重要功能，针对⼤量测量数据的统计分析也可⽤于对发现⽹络问题。
测量数据较路测具体更全⾯、更完整、更易取得的优点。
与传统⽹管的不同，MR是由UE上报的，可以更直接的反应⽆线情况；MR测量中有毫秒级的KPI信息，后期可以结合信令分析出更；MR数据中包含UE位置信息，可以把数据的视⾓进⼀步放⼤，从⼩区扩展到具体的地理位置上。
2.MR系统概况测量报告数据采集原理MR测量报告数据主要来⾃UE，以及在⽆线资源管理过程中计算产⽣的测量报告。
原始测量数据或者经过统计计算报送到MR 服务器以统计数据形式进⾏存储，⽣成MRS⽂件，或者直接报送到MR服务器以样本数据形式进⾏存储，最终⽣成MRO⽂件。
测量报告触发⽅式事件触发利⽤⽹络已开启的事件测量（A1、A2等），不需另外开启测量，测量数据周期性汇总⽣成MRE⽂件周期性触发需要⼿⼯开启测量任务，并配置上报周期，测量数据周期性汇总⽣成MRO和MRS⽂件⽬前我们的统计和分析数据源均采⽤周期性测量数据（即MRO和MRS⽂件）各类周期的定义：eNodeB或UE测量采样周期：reportInterval表⽰UE对某个测量数据进⾏测量的周期，⽬前要求统计设定为5120ms，即5.12S进⾏⼀次周期性测量。
reportAmount表⽰UE对某个测量数据进⾏的测量的数量，⽬前设置为infinity，表⽰⽆限制⼀直上报。
⽤sitemanager登到站上查看，这两个参数的位置在MRBTS-》LNBTS-》CTRLTS-》MTRACE-》Periodic UE measurements 下。
通过测试软件查看RRC重配置信令消息，⾥⾯就包含reportInterval参数和reportAmount参数OMC-R（MR服务器）统计周期：表⽰OMC-R⽣成测量报告统计的周期，该周期⽬前统计设置为15分钟，即每个ENB 15分钟⽣成⼀个测量报告⽂件。
事件描述规则使用方法
A1服务小区质量高于某个阈值A1-1(触发): Ms-Hys>Thresh
A1-2(取消): Ms+Hys<Thresh
A1 用于停止异频/异系统测量。
但在基于频率
优先级的切换中，A1用于启动异频测量。
A2服务小区质量低于某个阈值A2-1(触发): Ms+Hys<Thresh
A2-2(取消): Ms-Hys>Thresh
A2 用于启动异频/异系统测量。
但在基于频率
优先级的切换中，事件A2用于停止异频测量。
A3同频/异频邻区质量与服务小区质量
的差值高某个阈值“Off”
A3-1(触发):
Mn+Ofn+Ocn-Hys>Ms+Ofs+Ocs+Off
A3-2(取消):
Mn+Ofn+Ocn+Hys<Ms+Ofs+Ocs+Off
A3 用于启动同频/异频切换请求和ICIC决策。
A4异频邻区质量高于某个阈值A4-1(触发): Mn+Ofn+Ocn-Hys>Thresh
A4-2(取消): Mn+Ofn+Ocn+Hys<Thresh
A4 用于启动异频切换请求。
A5异频邻区质量高于某个阈值2、而服
务小区质量低于某个阈值1
A2 + A4A5 用于启动异频切换请求。
B1异系统邻区质量高于某个阈值B1-1(触发): Mn+Ofn-Hys>Thresh
B1-2(取消): Mn+Ofn+Hys<Thresh
B1 用于启动异系统切换请求。
B2异系统邻区质量高于某个阈值2、而
服务小区质量低于某个阈值1
A2 + B1B2用于启动异系统切换请求。
Measurement report triggering(3GPP) Ms:服务小区测量结果Mn:邻小区测量结果Mp:主小区测量结果Ofn:邻小区特定频率偏置Ocn:邻小区小区特定偏置Ofp:主小区特定频率偏置Ocp:邻小区小区特定偏置Off:事件偏置Hys:事件迟滞参数Thresh:事件门限Mcr:参考信号测量结果Ocr:参考信号偏置Mref:参考信号参考值Oref:参考信号参考偏置Event A1 (Serving becomes better than threshold)服务小区高于一定门限触发条件:Ms -Hys > Thresh离开条件:Ms + Hys < ThreshEvent A2 (Serving becomes worse than threshold)服务小区低于一定门限触发条件:Ms + Hys < Thresh离开条件:Ms -Hys > ThreshEvent A3 (Neighbour becomes offset better than PCell/ PSCell)邻小区高于主小区触发条件:Mn+Ofn+Ocn-Hys > Mp +Ofp +Ocp +Off离开条件:Mn+Ofn+Ocn+ Hys < Mp +Ofp +Ocp +OffEvent A4 (Neighbour becomes better than threshold)邻小区高于一定门限触发条件:Mn+Ofn+Ocn-Hys > Thresh ;离开条件:Mn+Ofn+Ocn+ Hys < ThreshEvent A5 (PCell/ PSCell becomes worse than threshold1 and neighbor becomes better than threshold2)主小区低于一定门限,邻小区高于一定门限触发条件1:Mp+ Hys < Thresh1 ,触发条件2:Mn+Ofn+Ocn-Hys > Thresh2离开条件1:Mp-Hys > Thresh1 ,离开条件2:Mn+Ofn+Ocn+ Hys < Thresh2Event A6 (Neighbour becomes offset better than SCell)邻小区高于辅小区触发条件:Mn + Ocn - Hys > Ms +Ocs +Off离开条件:Mn + Ocn + Hys < Ms +Ocs +OffEvent B1 (Inter RAT neighbour becomes better than threshold)异系统邻小区高于一定门限触发条件:Mn +Ofn ? Hys > Thresh离开条件:Mn+Ofn+ Hys < ThreshEvent B2 (PCell becomes worse than threshold1 and inter RAT neighbourbecomes better than threshold2)主小区低于一定门限,异系统邻小区高于一定门限触发条件1:Mp+ Hys < Thresh1 ,触发条件2:Mn+Ofn?Hys > Thresh2离开条件1:Mp- Hys > Thresh1 ,离开条件2:Mn+Ofn+ Hys < Thresh2Event C1 (CSI-RS resource becomes better than threshold)参考信号信道质量指示高于一定门限触发条件:Mcr +Ocr -Hys > Thresh离开条件:Mcr +Ocr + Hys < ThreshEvent C2 (CSI-RS resource becomes offset better than reference CSI-RS resource)参考信号信道质量指示高于参考信号质量指示参考值触发条件:Mcr +Ocr - Hys > Mref +Oref +Off离开条件:Mcr +Ocr + Hys < Mref +Oref +Off。
LTE系统事件简介一、LTE事件概述LTE切换时需要UE上报测量的结果（包括RSRP，RSRQ等），而上报又分为周期性上报和事件触发的上报。
➢周期性上报由基站配置，UE直接上报测量的结果。
➢事件触发的上报又分为系统内的事件和系统间的事件。
LTE系统内切换主要事件包括：➢A1事件，服务小区质量高于门限；这个事件可以用来关闭频间测量。
➢A2事件，服务小区质量低于门限；这个事件可以用来打开频间测量和系统间测量，因为这个事件发生后可能发生切换等操作。
➢A3事件，邻小区质量好于服务小区质量；这个事件一般用于频内/间基于覆盖的切换。
➢A4事件，邻小区质量好于门限；这个事件一般用于基于负荷的切换。
➢A5事件，服务小区质量低于一个门限并且邻小区质量高于一个门限；这个事件也可以用于频内/间基于覆盖的切换。
目前LTE同频切换都是基于A3/A5事件进行的切换（现网主要是基于A3事件的）二、切换流程举例三、切换流程简要说明- RRC Connection Reconfiguration（Measurement Control）测量控制，一般在初始接入或上一次切换命令中的重配消息里携带- Measurement Report测量报告，终端根据当前小区的测量控制信息，将符合切换门限的小区进行上报- HO Request源小区在收到测量报告后向目标小区申请资源及配置信息（站内切换的话为站内交互，站间切换会使用X2口或者S1口，优先使用X2口）- HO Request Ack目标小区将终端的接纳信息以及其它配置信息反馈给源小区- RRC Connection Reconfiguration（HO Command）将目标小区的接纳信息及配置信息发给终端，告知终端目标小区已准备好终端接入，重配消息里包含目标小区的测量控制- SN Status Transfer源小区将终端业务的缓存数据移至目标小区- Random Access Preamble终端收到第5步重配消息（切换命令）后使用重配消息里的接入信息进行接入- Random Access Response目标小区接入响应，收到此命令后可认为接入完成了，然后终端在RRC层上发重配完成消息（第9步）- RRC Connect Reconfiguration complete（HO Confirm）上报重配完成消息，切换完成- Release Resource当终端成功接入后，目标小区通知源小区删除终端的上下文信息四、协议对LTE事件的定义和说明4.1 A1事件定义Event A1 (Serving becomes better than threshold)The UE shall:1> consider the entering condition for this event to be satisfied when condition A1-1, as specifiedbelow, is fulfilled;1> consider the leaving condition for this event to be satisfied when condition A1-2, as specifiedbelow, is fulfilled;1> for this measurement, consider the primary or secondary cell that is configured on the frequencyindicated in the associated measObjectEUTRA to be the serving cell;Inequality A1-1 (Entering condition)-Ms>HysThreshInequality A1-2 (Leaving condition)Ms<+ThreshHysThe variables in the formula are defined as follows:Ms is the measurement result of the serving cell, not taking into account any offsets.Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).Thresh is the threshold parameter for this event (i.e. a1-Threshold as defined within reportConfigEUTRA for this event).Ms is expressed in dBm in case of RSRP, or in dB in case of RSRQ.Hys is expressed in dB.Thresh is expressed in the same unit as Ms.4.2 A2事件定义Event A2 (Serving becomes worse than threshold)The UE shall:1> consider the entering condition for this event to be satisfied when condition A2-1, as specifiedbelow, is fulfilled;1> consider the leaving condition for this event to be satisfied when condition A2-2, as specifiedbelow, is fulfilled;1> for this measurement, consider the primary or secondary cell that is configured on the frequencyindicated in the associated measObjectEUTRA to be the serving cell;Inequality A2-1 (Entering condition)+Ms<HysThreshInequality A2-2 (Leaving condition)Ms>-HysThreshThe variables in the formula are defined as follows:Ms is the measurement result of the serving cell, not taking into account any offsets.Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).Thresh is the threshold parameter for this event (i.e. a2-Threshold as defined within reportConfigEUTRA for this event).Ms is expressed in dBm in case of RSRP, or in dB in case of RSRQ.Hys is expressed in dB.Thresh is expressed in the same unit as Ms.4.3 A3事件定义Event A3 (Neighbour becomes offset better than PCell)The UE shall:1> consider the entering condition for this event to be satisfied when condition A3-1, as specifiedbelow, is fulfilled;1> consider the leaving condition for this event to be satisfied when condition A3-2, as specifiedbelow, is fulfilled;NOTE The cell(s) that triggers the event is on the frequency indicated in the associated measObject which may be different from the (primary) frequency used by the PCell.Inequality A3-1 (Entering condition)++>+Mn++-OcnOfpOcpMpHysOffOfnInequality A3-2 (Leaving condition)++<Mn++++MpOcpOfnOfpOffHysOcnThe variables in the formula are defined as follows:Mn is the measurement result of the neighbouring cell, not taking into account any offsets.Ofn is the frequency specific offset of the frequency of the neighbour cell (i.e. offsetFreq as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell).Ocn is the cell specific offset of the neighbour cell (i.e. cellIndividualOffset as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell), and set to zero if not configured for the neighbour cell.Mp is the measurement result of the PCell, not taking into account any offsets.Ofp is the frequency specific offset of the primary frequency (i.e. offsetFreq as defined within measObjectEUTRA corresponding to the primary frequency).Ocp is the cell specific offset of the PCell (i.e. cellIndividualOffset as defined within measObjectEUTRA corresponding to the primary frequency), and is set to zero if not configured for the PCell.Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).Off is the offset parameter for this event (i.e. a3-Offset as defined within reportConfigEUTRA for this event).Mn, Mp are expressed in dBm in case of RSRP, or in dB in case of RSRQ.Ofn, Ocn, Ofp, Ocp, Hys, Off are expressed in dB.4.4 A4事件定义Event A4 (Neighbour becomes better than threshold)The UE shall:1> consider the entering condition for this event to be satisfied when condition A4-1, as specifiedbelow, is fulfilled;1> consider the leaving condition for this event to be satisfied when condition A4-2, as specifiedbelow, is fulfilled;Inequality A4-1 (Entering condition)-+Mn>+HysThreshOcnOfnInequality A4-2 (Leaving condition)Mn<+++ThreshOfnHysOcnThe variables in the formula are defined as follows:Mn is the measurement result of the neighbouring cell, not taking into account any offsets.Ofn is the frequency specific offset of the frequency of the neighbour cell (i.e. offsetFreq as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell).Ocn is the cell specific offset of the neighbour cell (i.e. cellIndividualOffset as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell), and set to zero if not configured for the neighbour cell.Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).Thresh is the threshold parameter for this event (i.e. a4-Threshold as defined within reportConfigEUTRA for this event).Mn is expressed in dBm in case of RSRP, or in dB in case of RSRQ.Ofn, Ocn, Hys are expressed in dB.Thresh is expressed in the same unit as Mn.4.5 A5事件定义Event A5 (PCell becomes worse than threshold1 and neighbour becomes better than threshold2)The UE shall:1> consider the entering condition for this event to be satisfied when both condition A5-1 andcondition A5-2, as specified below, are fulfilled;1> consider the leaving condition for this event to be satisfied when condition A5-3 or condition A5-4, i.e. at least one of the two, as specified below, is fulfilled;NOTE: The cell(s) that triggers the event is on the frequency indicated in the associatedmeasObject which may be different from the (primary) frequency used by the PCell.Inequality A5-1 (Entering condition 1)1Thresh Hys Mp <+Inequality A5-2 (Entering condition 2)2Thresh Hys Ocn Ofn Mn >-++Inequality A5-3 (Leaving condition 1)1Thresh Hys Mp >-Inequality A5-4 (Leaving condition 2)2Thresh Hys Ocn Ofn Mn <+++The variables in the formula are defined as follows:Mp is the measurement result of the PCell, not taking into account any offsets.Mn is the measurement result of the neighbouring cell, not taking into account any offsets.Ofn is the frequency specific offset of the frequency of the neighbour cell (i.e. offsetFreq as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell).Ocn is the cell specific offset of the neighbour cell (i.e. cellIndividualOffset as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell), and set to zero if not configured for the neighbour cell.Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).Thresh1 is the threshold parameter for this event (i.e. a5-Threshold1 as defined within reportConfigEUTRA for this event).Thresh2 is the threshold parameter for this event (i.e. a5-Threshold2 as defined within reportConfigEUTRA for this event).Mn, Mp are expressed in dBm in case of RSRP, or in dB in case of RSRQ.Ofn, Ocn, Hys are expressed in dB.Thresh1 is expressed in the same unit as Mp .Thresh2 is expressed in the same unit as Mn .Event A6 (Neighbour becomes offset better than SCell)The UE shall:1> consider the entering condition for this event to be satisfied when condition A6-1, as specifiedbelow, is fulfilled;1> consider the leaving condition for this event to be satisfied when condition A6-2, as specifiedbelow, is fulfilled;1> for this measurement, consider the (secondary) cell that is configured on the frequency indicatedin the associated measObjectEUTRA to be the serving cell;NOTE: The neighbour(s) is on the same frequency as the SCell i.e. both are on the frequency indicated in the associated measObject.Inequality A6-1 (Entering condition)+>Mn++-MsOcsOffHysOcnInequality A6-2 (Leaving condition)+<+Mn++OcsOffMsHysOcnThe variables in the formula are defined as follows:Mn is the measurement result of the neighbouring cell, not taking into account any offsets.Ocn is the cell specific offset of the neighbour cell (i.e. cellIndividualOffset as defined within measObjectEUTRA corresponding to the frequency of the neighbour cell), and set to zero if not configured for the neighbour cell.Ms is the measurement result of the serving cell, not taking into account any offsets.Ocs is the cell specific offset of the serving cell (i.e. cellIndividualOffset as defined within measObjectEUTRA corresponding to the serving frequency), and is set to zero if not configured for the serving cell.Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).Off is the offset parameter for this event (i.e. a6-Offset as defined within reportConfigEUTRA for this event).Mn, Ms are expressed in dBm in case of RSRP, or in dB in case of RSRQ.Ocn, Ocs, Hys, Off are expressed in dB.Event B1 (Inter RAT neighbour becomes better than threshold)The UE shall:1> for UTRA and CDMA2000, only trigger the event for cells included in the correspondingmeasurement object;1> consider the entering condition for this event to be satisfied when condition B1-1, as specifiedbelow, is fulfilled;1> consider the leaving condition for this event to be satisfied when condition B1-2, as specifiedbelow, is fulfilled;Inequality B1-1 (Entering condition)Thresh+Mn>-HysOfnInequality B1-2 (Leaving condition)++Mn<ThreshHysOfnThe variables in the formula are defined as follows:Mn is the measurement result of the inter-RAT neighbour cell, not taking into account any offsets.For CDMA 2000 measurement result, pilotStrength is divided by -2.Ofn is the frequency specific offset of the frequency of the inter-RAT neighbour cell (i.e. offsetFreq as defined within the measObject corresponding to the frequency of the neighbour inter-RAT cell).Hys is the hysteresis parameter for this event (i.e. hysteresis as defined withinreportConfigInterRAT for this event).Thresh is the threshold parameter for this event (i.e. b1-Threshold as defined within reportConfigInterRAT for this event). For CDMA2000, b1-Threshold is divided by -2.Mn is expressed in dBm or in dB, depending on the measurement quantity of the inter-RAT neighbour cell.Ofn, Hys are expressed in dB.Thresh is expressed in the same unit as Mn.4.8 B2事件定义Event B2 (PCell becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2)The UE shall:1> for UTRA and CDMA2000, only trigger the event for cells included in the correspondingmeasurement object;1> consider the entering condition for this event to be satisfied when both condition B2-1 andcondition B2-2, as specified below, are fulfilled;1> consider the leaving condition for this event to be satisfied when condition B2-3 or conditionB2-4, i.e. at least one of the two, as specified below, is fulfilled;Inequality B2-1 (Entering condition 1)+HysMp<Thresh1Inequality B2-2 (Entering condition 2)-+Mn>Ofn2ThreshHysInequality B2-3 (Leaving condition 1)Hys-Mp>1ThreshInequality B2-4 (Leaving condition 2)Mn<++OfnHys2ThreshThe variables in the formula are defined as follows:Mp is the measurement result of the PCell, not taking into account any offsets.Mn is the measurement result of the inter-RAT neighbour cell, not taking into account any offsets.For CDMA2000 measurement result, pilotStrength is divided by -2.Ofn is the frequency specific offset of the frequency of the inter-RAT neighbour cell (i.e. offsetFreq as defined within the measObject corresponding to the frequency of the inter-RAT neighbourcell).Hys is the hysteresis parameter for this event (i.e. hysteresis as defined withinreportConfigInterRAT for this event).Thresh1 is the threshold parameter for this event (i.e. b2-Threshold1 as defined within reportConfigInterRAT for this event).Thresh2 is the threshold parameter for this event (i.e. b2-Threshold2 as defined within reportConfigInterRAT for this event). For CDMA2000, b2-Threshold2 is divided by -2.Mp is expressed in dBm in case of RSRP, or in dB in case of RSRQ.Mn is expressed in dBm or dB, depending on the measurement quantity of the inter-RAT neighbour cell.Ofn, Hys are expressed in dB.修正版Thresh1 is expressed in the same unit as Mp. Thresh2 is expressed in the same unit as Mn.。
2020年第6期166网络与信息安全信息技术与信息化LTE 网络MR 数据快速解析的研究与实现刘 洁* 葛 俊** LIU Jie GE Jun摘 要 目前，采集4G 网络的MR （Measurement Report ，测量报告）数据并进行解析是了解4G 网络覆盖情况的最有效方法。
但用传统方法解析MR 数据的周期较长，无法满足快速响应的要求。
本文从如何解决LTE 网络MR 数据快速解析这一难题出发，研究快速解析MR 数据的方法并应用于实践，便于网络优化一线人员能及时了解网络覆盖情况，提升移动用户的感知。
关键词 4G 网络；MR 数据；快速解析；提升用户感知doi：10.3969/j.issn.1672-9528.2020.06.053* 湖南工程学院计算机与通信学院 湖南湘潭 411104** 中国移动通信集团湖南有限公司湘潭分公司 湖南湘潭 411100[基金项目] 2016年度湖南工程学院校级青年科研课题：LTE 网络MR 数据快速解析的研究与实践（XJ1610）；2018年湖南省教育厅科学研究项目：一种基于因子加权算法的 PCI 模三干扰智能优化方法研究（18C0717）0 前言目前，运营商的4G 网络建设规模已经十分庞大，庞大的网络也需要投入巨大的资源对网络进行优化。
以往的网络优化方式是通过人工测试获得网络各项业务的性能情况，根据性能情况再进一步来评估网络质量，如网络覆盖率、上网速率、通话质量、干扰情况等，从而推断客户在该区域网络下的体验感受，有针对性地开展网络优化工作。
而人工测试受到各种因素的制约，只能对能通车的路段及部分重点场所进行测试，由于人工测试需要花费大量的人力和物力，且测试完成后再进行分析才能指导解决问题，时效性不高。
为了快速高效的了解4G 网络的覆盖情况，指导4G 建设，通过对4G 网络的MR （Measurement Report，测量报告）数据进行采集并进行解析成为当前替代人为测试最有效的方法，通过解析MR 数据能够对网络的4G 网络的信号覆盖状况和用户感知情况进行统计、分析及评估。
LTE测量事件主要有下面几种：Event A1、Event A2、Event A3、Event A4、Event A5、Event B1、Event B2。
Event A1 (Serving becomes better than threshold)：表示服务小区信号质量高于一定门限，满足此条件的事件被上报时，eNodeB停止异频/异系统测量；类似于UMTS里面的2F事件；Event A2 (Serving becomes worse than threshold)：表示服务小区信号质量低于一定门限，满足此条件的事件被上报时，eNodeB启动异频/异系统测量；类似于UMTS里面的2D事件；Event A3 (Neighbour becomes offset better than serving)：表示同频邻区质量高于服务小区质量，满足此条件的事件被上报时，源eNodeB启动同频切换请求；Event A4 (Neighbour becomes better than threshold)：表示异频邻区质量高于一定门限量，满足此条件的事件被上报时，源eNodeB启动异频切换请求；Event A5 (Serving becomes worse than threshold1 and neighbour becomes better than threshold2)：表示服务小区质量低于一定门限并且邻区质量高于一定门限；类似于UMTS里的2B事件；Event B1 (Inter RAT neighbour becomes better than threshold)：表示异系统邻区质量高于一定门限，满足此条件事件被上报时，源eNodeB启动异系统切换请求；类似于UMTS里的3C事件；Event B2 (Serving becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2)：表示服务小区质量低于一定门限并且异系统邻区质量高于一定门限，类似于UMTS里进行异系统切换的3A事件。
Leliwa Technical BulletinLTE measurement events eventsDate: Date: Revision: Author:12.03.2010 Jakub BluszczCopyright ©2010 Leliwa. All Rights Reserved.001/LME/0101Leliwa Technical BulletinLTE measurement measurement eventsTable of contentsTable of contents ............................................................................................................................................................................2 Parameter s-measure .....................................................................................................................................................................3 Event A1 .........................................................................................................................................................................................4 Event A2 .........................................................................................................................................................................................5 Event A3 .........................................................................................................................................................................................6 Event A4 .........................................................................................................................................................................................7 Event A5 .........................................................................................................................................................................................8 Event B1 .........................................................................................................................................................................................9 Event B2 .......................................................................................................................................................................................10 Speed dependant scaling of measurement parameters ................................................................................................................11 Acronyms and Abbreviations ........................................................................................................................................................12 References ...................................................................................................................................................................................13 Disclaimer.....................................................................................................................................................................................142Leliwa Technical BulletinLTE measurement measurement eventsParameter ss-measureRSRP s-cells-measureMEASUREMENTStime3Leliwa Technical BulletinLTE measurement measurement eventsEvent A1Serving becomes better than thresholdtriggerQuantityHysteresisa1-Threshold reportAmountreportQuantity timeToTrigger reportInterval reportOnLeavetimetriggerType=event eventId=eventA14Leliwa Technical BulletinLTE measurement measurement eventsEvent A2Serving becomes worse than thresholdtriggerQuantitya2-Threshold Hysteresis reportAmount time timeToTrigger reportInterval reportOnLeavereportQuantitytriggerType=event eventId=eventA25Leliwa Technical BulletinLTE measurement measurement eventsEvent A3Neighbour becomes offset better than servingtriggerQuantity Hysteresisoffsets-cell n-cell reportQuantity reportAmount timetriggerType=event eventId=eventA3reportOnLeave timeToTrigger reportIntervalOffset = a3-offset + offsetFreqs + cellIndividualOffsets – offsetFreqn - cellIndividualOffsetn6Leliwa Technical BulletinLTE measurement measurement eventsEvent A4Neighbour becomes offset better than thresholdtriggerQuantityHysteresisoffset reportAmount reportQuantity a4-Thresholdtime reportOnLeavetriggerType=event eventId=eventA4timeToTriggerreportIntervalOffset = offsetFreqn + cellIndividualOffsetn7Leliwa Technical BulletinLTE measurement measurement eventsEvent A5Serving becomes worse than thr.1 and neighbour becomes better than thr.2condition 2 fulfilled triggerQuantity condition 1 fulfilled a5-Threshold2 Hysteresis offsets-cell a5-Threshold1 reportAmount reportQuantity reportOnLeave triggerType=event timeToTrigger reportInterval eventId=eventA5 offset = offsetFreqn + cellIndividualOffsetn Hysteresis n-celltime8Leliwa Technical BulletinLTE measurement measurement eventsEvent B1Inter RAT neighbour becomes better than thresholdutra-RSCP/utraEcN0 RSSI(RXLEV)HysteresisOffsetFreq reportAmount reportQuantity reportOnLeave a1-ThresholdUTRA/GERANtime timeToTrigger reportIntervaltriggerType=event eventId=eventB19Leliwa Technical BulletinLTE measurement measurement eventsEvent B2Serving becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2)condition 2 fulfilled utra-RSCP/utraEcN0 RSSI(RXLEV) triggerQuantity condition 1 fulfilled b2-Threshold2UTRA/GERAN Hysteresis OffsetFreqs-cell b2-Threshold1 reportAmount reportQuantity Hysteresis n-celltime reportOnLeave timeToTrigger reportIntervaltriggerType=event eventId=eventB210Speed dependant scaling of measurement parameters Speed dependant scaling of measurement parameterst ri gge r Quan tityAcronyms and Abbreviations Acronyms and Abbreviations AKA Authentication and Key AgreementAKACCO Cell Change OrderCCOCDMA Code Division Multiple AccessCDMADCCH Dedicated Control ChannelDCCHDL DownlinkDLEGPRS Enhanced General Packet Radio Service EGPRSGERAN GSM/EDGE Radio Access NetworkGERANHO HandoverHOMME Mobility Management EntityMMENAS Non-access Stratum SignallingNASPCCH Paging Control ChannelPCCHPLMN Public Land Mobile NetworkPLMNPSI Public Service IdentityPSIRAT Radio Access TechnologyRATRLC Radio Link ControlRLCRNTI Radio Network Temporary IdentifierRNTIRRC Radio Resource ControlRRCRSCP Received Signal Code PowerRSCPRSRP Reference Signal Received PowerRSRPRXLEV Received Signal LevelRXLEVTMSI Temporary Mobile Subscriber Identity Number TMSIUE User EquipmentUEUL UplinkULUTRAN UMTS Terrestrial Radio Access Network UTRANeferencesR eferencesThis section contains the locations of various specifications, document references and useful information where you can learn more about this subject.[1] 3GPP TS 36.331 Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specificationDisclaimerDisclaimerThis document is based on Leliwa training materials.Information in this document is subject to change without notice. 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