TD-LTE网络性能KPI(切换成功率)优化手册簿

TD-LTE网络性能KPI（切换成功率）优化手册

1切换成功率定义说明

1.1指标公式

1.2COUNTER定义

1.2.1集团规范定义

1、eNB间S1切换出请求次数：

源eNB向MME发送的“切换请求”消息（HANDOVER REQUIRED）（3GPP TS 36.413），指示eNB间通过S1接口的切换出准备请求。向不同小区发送的同一切换准备请求，需要重复统计。

2、eNB间S1切换出成功次数：

源eNB收到MME发送的“UE上下文释放命令”消息（UE CONTEXT RELEASE COMMAND）（3GPP TS 36.413），指示eNB间通过S1接口的切换出执行成功。

3、eNB间X2切换出请求次数：

源eNB向目标eNB发送的“切换请求”消息（HANDOVER REQUEST）（3GPP TS 36.423），指示eNB间通过X2接口的切换出准备请求。向不同小区发送的同一切换准备请求，重复统计。

4、eNB间X2切换出成功次数：

源eNB收到目标eNB发送的“UE上下文释放”消息（UE CONTEXT RELEASE）（3GPP TS 36.423），指示eNB间通过X2接口的切换出执行成功。

5、eNB内切换出请求次数：

eNB向UE发送携带mobilityControlInfo 的“RRC连接重配置”消息（RRCConnectionReconfiguration），指示eNB内小区间切换出请求。（3GPP TS 36.331）

6、eNB内切换出成功次数：

eNB收到UE发送的“RRC连接重配置完成”消息（RRCConnectionReconfigurationComplete），指示eNB内小区间切换出成功。（3GPP TS 36.331）

1.2.2NSN映射

1、eNB间S1切换出请求次数：

M8014C14：INTER_ENB_S1_HO_PREP，The number of Inter eNB S1-based Handover preparations；

2、eNB间S1切换出成功次数：

M8014C19：INTER_ENB_S1_HO_SUCC，The number of successful Inter eNB S1-based Handover completions；

3、eNB间X2切换出请求次数：

M8014C0：INTER_ENB_HO_PREP，The number of Inter-eNB X2-based Handover preparations. The Mobility management (MM) receives a list with target cells from the RRM and decides to start an Inter-eNB X2-based Handover；

4、eNB间X2切换出成功次数：

M8014C7：SUCC_INTER_ENB_HO，The number of successful Inter-eNB X2-based Handover completions；

5、eNB内切换出请求次数：

M8009C6：ATT_INTRA_ENB_HO，The number of Intra-eNB Handover attempts；

6、eNB内切换出成功次数：

M8009C7：SUCC_INTRA_ENB_HO，The number of successful Intra-eNB Handover completions；

1.3信令统计点

1.3.1eNB间S1切换

统计点关系：M8014C14 = M8014C15 + M8014C16 + M8014C17 + M8014C18

M8014C18 = M8014C19 + M8014C20（注：现网实际数据对不上）

1、M8014C14：INTER_ENB_S1_HO_PREP

Updated: This counter is updated following the transmission of an S1AP:HANDOVER REQUIRED message from the source eNB to the MME if this message prepares an Inter eNB Handover.

2、M8014C15：INTER_S1_HO_PREP_FAIL_TIME

Updated: This counter is updated at the expiry of the guarding timer TS1RELOCprep if the timer was started because of the preparation of an Inter eNB Handover.

3、M8014C16：INTER_S1_HO_PREP_FAIL_NORR

Updated: This counter is updated following the reception of an S1AP: HANDOVER PREPARATION FAILURE message from MME to source eNB with cause "No Radio Resources Available in Target Cell" if this message is received in response to the preparation of an Inter eNB Handover.

4、M8014C17：INTER_S1_HO_PREP_FAIL_OTHER

Updated: The number of failed Inter eNB S1-based Handover preparations due to the reception of an S1AP: HANDOVER PREPARATION FAILURE message with a cause other than "No Radio Resources Available in Target Cell."

5、M8014C18：INTER_ENB_S1_HO_ATT

Updated: This counter is updated following the reception of an S1AP: HANDOVER COMMAND message from the MME to the source eNB in case that this message is received in response to the preparation of an Inter eNB Handover.