触发RRC重建的三种原因中,Other类怎么处理
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解决时间 2021-01-04 11:04
- 提问者网友:美人性情
- 2021-01-03 19:39
触发RRC重建的三种原因中,Other类怎么处理
最佳答案
- 五星知识达人网友:风格不统一
- 2021-01-03 20:56
()协议重建定义
(1)协议3GPP36.331定义触发重建原包括几类
1>upondetecting radio link failure,
2>uponhandover failure,
3>uponmobility from E-UTRA failure,
4>uponintegrity check failure indication from lower layers;
5>uponan RRC connection reconfiguration failure
(2)reconfiguration failure定义:
if the UE is unable to complywith (part of) the configuration included in the RRCConnectionReconfigurationmessage:
continueusing the configuration used prior to the reception of RRCConnectionReconfiguration
message;
if security has not been activated:
performthe actions upon leaving RRC_CONNECTED as specified in 5.3.12, with releasecause other;
else:
initiate theconnection re-establishment procedure as specified in 5.3.7, upon which theconnection reconfiguration procedure ends;
UE安全模式激状态收重配置消息于重配置消息内信元匹配/兼容则发起原值reconfiguration failure重建
(3)handover failure定义
if T304 expires (handover failure):
NOTE:
FollowingT304 expiry any dedicated preamble, if provided within the rach-ConfigDedicated, is not available for use by the UE anymore.
UE切换流程收切换重配置消息启T304T304超前UE完目标区随机接入则发起原值handover failure重建
(4)协议3GPP36.331定义重建失败
Upon receiving the RRCConnectionReestablishmentReject message, the UE shall:
performthe actions upon leaving RRC_CONNECTED as specified in 5.3.12, with releasecause 'RRC connection failure';
(5)重建原(radio link failure)
重建见原RLF, UE检测前检测radio link failure则发起原值other重建通引起RLF存几种机制:
①行RLC重传达数
indication from RLC that the maximum number of retransmissions hasbeen reached包括SRBDRB与eNB侧行SRB与DRB机制相同UE RLC发送PDU需要等eNB侧反馈应状态PDU才能完RLC调度于没收eNB状态PDU原两原eNB侧行根本没收任何RLC PDU响应状态PDU另原eNB响应状态PDU由于行误码原没达UE侧
②MAC层SRI重传达数
切换程切换完命令丢失UESR发送行链路问题UE收ENB确认则发起重建请求
(1)协议3GPP36.331定义触发重建原包括几类
1>upondetecting radio link failure,
2>uponhandover failure,
3>uponmobility from E-UTRA failure,
4>uponintegrity check failure indication from lower layers;
5>uponan RRC connection reconfiguration failure
(2)reconfiguration failure定义:
if the UE is unable to complywith (part of) the configuration included in the RRCConnectionReconfigurationmessage:
continueusing the configuration used prior to the reception of RRCConnectionReconfiguration
message;
if security has not been activated:
performthe actions upon leaving RRC_CONNECTED as specified in 5.3.12, with releasecause other;
else:
initiate theconnection re-establishment procedure as specified in 5.3.7, upon which theconnection reconfiguration procedure ends;
UE安全模式激状态收重配置消息于重配置消息内信元匹配/兼容则发起原值reconfiguration failure重建
(3)handover failure定义
if T304 expires (handover failure):
NOTE:
FollowingT304 expiry any dedicated preamble, if provided within the rach-ConfigDedicated, is not available for use by the UE anymore.
UE切换流程收切换重配置消息启T304T304超前UE完目标区随机接入则发起原值handover failure重建
(4)协议3GPP36.331定义重建失败
Upon receiving the RRCConnectionReestablishmentReject message, the UE shall:
performthe actions upon leaving RRC_CONNECTED as specified in 5.3.12, with releasecause 'RRC connection failure';
(5)重建原(radio link failure)
重建见原RLF, UE检测前检测radio link failure则发起原值other重建通引起RLF存几种机制:
①行RLC重传达数
indication from RLC that the maximum number of retransmissions hasbeen reached包括SRBDRB与eNB侧行SRB与DRB机制相同UE RLC发送PDU需要等eNB侧反馈应状态PDU才能完RLC调度于没收eNB状态PDU原两原eNB侧行根本没收任何RLC PDU响应状态PDU另原eNB响应状态PDU由于行误码原没达UE侧
②MAC层SRI重传达数
切换程切换完命令丢失UESR发送行链路问题UE收ENB确认则发起重建请求
全部回答
- 1楼网友:上分大魔王
- 2021-01-03 22:13
首先我们来介绍一下,中国电信关于RRC重建立比例定义的公式:
RRC重建立比例=RRC重建立请求次数/(RRC重建立请求次数+RRC连接建立请求次数) 从计算公式来看,如果要降低RRC重建立比例,最好的方法就是要降低RRC重建立请求次数。通常情况下,触发RRC 重建立的原因有以下几种情况:
1)UE检测到无线链路失败;这种失败一般又分为两种情况,一种情况是RLC达到最大重传次数,另一种情况是上/下行失步,随机接入失败。
2)切换失败,包括系统内和系统外的切换;该类失败是指如果网络侧发送给UE的RRC连接重配置消息中包含Mobility ControlInfo,则执行切换。若切换失败,UE会发起RRC重建立请求,并在重建立原因封装时携带HO failure。
3)E-UTRA侧移动性失败;
4)底层制式完整性校验失败;该类失败不常见,多为终端问题。原因是由于信令的完整性保护失败发生RRC重建立,例如:UE和基站的机密算法或者完整性保护算法不一致。
5)RRC连接重配失败。
通过以上分析,我们从OMC后台统计的失败原因最多的就是:其它原因触发的RRC重建立,
- 2楼网友:梦中风几里
- 2021-01-03 21:46
= enumerated { reconfigurationfailurereestablishmentcause:,handoverfailure, otherfailure
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