割接后系统性能监控文档格式.docx
《割接后系统性能监控文档格式.docx》由会员分享,可在线阅读,更多相关《割接后系统性能监控文档格式.docx(25页珍藏版)》请在冰豆网上搜索。
![割接后系统性能监控文档格式.docx](https://file1.bdocx.com/fileroot1/2022-10/13/b6a76188-f8c4-4351-bb59-fc8d585645a4/b6a76188-f8c4-4351-bb59-fc8d585645a41.gif)
MS
ChannelRequired
OK_ACC_PROC_SUC_RACH
ACCESS_PER_RACH
INV_EST_CAUSE_ON_RACH
CHAN_REQ_CAUSE_ATMPT
ChannelRequired
Received
Channelassignment
Alloc_sdcch
ALLOC_SDCCH_FAIL
ImmediateChannelreject
CHAN_REQ_MS_BLKD
Channelactivation
ImmediateassignmentChannel
Channelactivationacknowledge
Rr_t3101
StopRr_t3101
SABM(L3initMSG)
Ok_acc_proc
Estabishindicate
UAL3initmsg
Chan_req_ms_fall
CR
InitialL3info.
CR:
conn_req_to_msc
CC
Conn_refused
CREF
MS传送一个信道请求消息(智能信息,建立原因值,随机参考),打包在接入突发序列中,信道编码器对其解码.正确解码后被送到RSS-L1OK_ACC_PROC_SUC_RACH;
ACCESS_PER_RACH增值.收到信道请求消息,RSSABIS验证信道建立原因值有效性,无效加1,有效就格式化消息送到RRSM.
一旦RRSM接收到信道需求的消息,将试图把MS建立在一个专用信道上,CHAN_REQ_CAUSE_ATMPT作出标记.成功分配SDCCH后,CRM中的ALLOC_SDCCH增值.
每当CRM试图分配一个空闲的SDCCH,却由于SDCCH忙而禁止时,ALLOC_SDCCH_FAIL值增加,当由于资源短缺而拒绝SDCCH的切换时,在目标小区中,也会增加.(在没有SDCCH切换时,alloc_sdcch_fail=chan_req_ms_blk)
当收到来自CRM的立即分配拒绝消息时,CHAN_REQ_MS_BLKD递增.
RR_T3101定时期满没有收到建立指示,CHAN_REQ_MS_FALL做标记.
若存在较大的alloc_sdcch_fail,说明SDCCH拥塞严重,常用的解决方法是:
增加SDCCH数目,特别是铁路高速公路旁边的基站.
较大干扰会造成SDCCH,TCH拥塞,故一定要排除干扰.
减小该cell的C1(增大rxlev_access_min).
采用动态分配SDCCH的算法.
2TCH拥塞:
MSC
Assignmentrequst
SSM
InitiateAssignment
RRSM
Assignmentresourcerequst
MA_REQ_FROM_MSC
CRM
RSS
Assignmentchannelassigned
ALLOC_TCH
ALLOC_TCH_FAIL/无资源
Unsuccessfulassignment
Assignmentfailure
Resourcenotavailable
MA_CMD_TO_MS_BLK
PhysicalContextRequest
PhysicalContextConfirm
ChannelActivation
ChannelActivationAcknowledge
AssignmentCommand
DataRequest
(AssignmentCommand)
StartT10
MA_CMD_TO_MS
UnsuccessfulAssignment
AssignmentComplete
AssignmentSuccessful
StopT10
DataIndication(AssignmentComplete)
Stoptimerassign_successful
DataIndication(AssignmentFailure)
MA_FAIL_FROM_MS
AssignmentFailure
IfT10expires,whichmeanstheMScan’ttunetotheTCHanditalsofailstoretunbacktotheSDCCH.
SM
Connection
Request
TOTAL_CALLS
MA_COMPLETE_TO_MSC
SwitchResponse
Success
当SDCCH上的鉴权,加密和呼叫建立完成之后,MSC将开始分配进程为手机分配TCH。
交换机发分配需求消息给SSM,消息中带有交换机指定的CIC。
BSC的SSM收到分配需求后记为ma_req_from_msc.
BSC的CRM随即分配TCH,如果此时无可用TCH,则记ma_cmd_to_ms_blk,同时记alloc_tch_fail。
注意:
alloc_tch_fail还会在切换时记数。
正常情况下,TCH的拥塞应该为0,如果出现拥塞,则主要的解决方法有:
打开该小区往其它小区的拥塞切换。
增大天线俯仰角,降低功率,减小话务量的吸收(尽量不采用).
打开该小区的动态配置功能。
使该小区往相邻小区的切换更容易。
增加TCH.
是否有断站.
检查是否是外部干扰引起的.
提高无线接通率的办法是降低SDCCH_BLK_RATE与TCH_BLK_RATE.只要把握尽量减小SDCCH,TCH的拥塞,无线接通率很容易达到99.7%(满分).
二.切换成功率:
(out_intra_bss_ho_suc+out_inter_bss_ho_suc+in_intra_bss_ho_suc+in_inter_bss_ho_suc)/out_intra_bss_ho_atmpt+out_inter_bss_ho_atmpt+in_intra_bss_ho_suc+in_intra_bss_ho_lostms+in_intra_bss_ho_return+in_intra_bss_ho_cleared+ho_req_msc_ok
INTRA_BSS_HO_SUC+INTER_BSS_HO_SUC/BSS_HO_ATMP+
由于INTRA_CELL_HO不在考核范围内,故对其不作分析.
当HDPC(INRSS)向RRSM发送切换认可消息(含原因&
合格的相邻小区)后,RSS将启动切换程序.RRSM把消息作为切换认可受到消息送给SSM.,BSC决定何种切换
1.BSS内切换:
OUT_INTRA_BSS_HO_REQ
Ho_rec_received
Ho_recognised切换认可
RRSM(S)
CRM(S)
RSS(S)
OUT_HO_NC_CAUSE_ATMPT
OUT_HO_CAUSE_ATMPT
Interhorequst
INTERBAND_ACTIVITY
Ho_channelassigned
RSS(T
CRM(T
RRSM(T
Channelactive
Hoallocation
IN_INTRA_BSS_NC_ATMPT
Channelactiveack
MSpowercontrol
StateT3103
InitiateHO
OUT_INTRA_BSS_HO_ATMPT
HO_CMD
OUT_HO_CAUSE_ATMPTPT
<
FACCH>
Ho_detectionreceived
Ho_detection
Transrequst
Hoaccess
Estabishindication
Switch
respond
Ho_succ
Ho_cmplt
StopT3103
Ho_performed
OUT_INTRA_BSS_HO_SUC
Physinfo
IN_INTRA_BSS_HO_SUC
SABM
INTRA_BSS_HO_CAUSE_SUC
OUT_HO_NCSUC
UA
InterhoRequest
HO_FAI_NO_RESOURCE
OUT_INTRA_BSS_HO_PRI_BLK
Horesourcenotavalible
HOcommand
HOfailure
Unsucho
OUT_INTRA_BSS_HO_RETURN
OUT_INTRA_BSS_EQUIP_FAIL
IN_INTRA_BSS_HO_RETURN
IN_INTRA_BSS_EQUIP_FAIL
Iftimerexpire
Channelreleased
T3103exoire,clearrequst
OUT_INTRA_BSS_HO_LOSTMS
CLR_REQ_TO_MSC
IN_INTRA_BSS_HO_LOSTMS
成功切换:
每次SSM决定进行BSS内切换,OUT_INTRA_BSS_HO_REQ就进行标记.SSM一旦收到由目标RRSM送来的切换分配消息中规定的目标资源后,通过发送开始切换消息来启动MS从源小区向目标小区的切换.发送该消息后,
OUT_INTRA_BSS_HO_ATMPT对于源小区递增.
源RRSM收到开始切换消息就要格式化通过发往MS的空间接口切换命令(在FACCH上发送,并向MS提供目标TCH的详细情况).MS将改变其空间接口特性,试图在L1与目标RSS连接起来,然后L2与目标RSS连接.若不同步,会在试图建立L2之前发送4个连续的L1接入突发序列.MS在与RSS连接后,会发送一个L3切换完成消息,此消息作为切换成功消息传至SSM,SSM收到此消息后,格式化并向MSC发送切换完成的消息.IN_INTRA_BSS_HO_SUC&
OUT_INTR