UE注册网络常见的拒绝码在3gpp 24008协议4.4.4.7，如下：，接下来我们就来聊聊关于3gpp解读指南?以下内容大家不妨参考一二希望能帮到您!
3gpp解读指南
UE注册网络常见的拒绝码在3gpp 24008协议4.4.4.7，如下：
# 2: IMSI unknown in HLR;（IMSI在HLR端未知）
# 3: Illegal MS; （非法的MS）
# 6: Illegal ME.（i非法的ME）
协议规定，大致意思是遇到如上拒绝码，需要设备拔插SIM卡，或者重启设备，设备才能重新搜网，同时需要删除设备端存储的TMSI，LAI，加密序列值，如下协议规定
The mobile station shall set the update status to ROAMING NOT ALLOWED (and store it in the SIM according to section 4.1.2.2), and delete any TMSI, stored LAI and ciphering key sequence number and shall consider the SIM as invalid until switch-off or the SIM is removed。
# 11: PLMN not allowed;（PLMN不允许）
# 12: Location Area not allowed; （该位置域不允许）
# 13: Roaming not allowed in this location area.（该区域漫游不被允许）
协议上描述遇到上述原因，需要把当前PLMN加入到禁用列表里，同时需要删除LAI TMSI，鉴权序列，以及重启尝试次数，同时如果遇到#13被拒当设备返回IDLE态时，需要执行PLMN选择，而不是用当前PLMN重新做小区选择，如下协议：
The mobile station shall delete any LAI, TMSI and ciphering key sequence number stored in the SIM, reset the attempt counter, set the update status to ROAMING NOT ALLOWED (and store it in the SIM according to section 4.1.2.2). The mobile station shall store the LAI or the PLMN identity in the suitable forbidden list, i.e. in the "forbidden PLMN list" for cause #11, in the list of "forbidden location areas for regional provision of service" for cause #12, and in the list of "forbidden location areas for roaming" for cause #13. In addition, the MS will memorize if cause #13 was received, so to perform a PLMN selection instead of a cell selection when back to the MM IDLE state.
# 7 (GPRS services not allowed)（GPRS服务不允许）
The MS shall set the GPRS update status to GU3 ROAMING NOT ALLOWED (and shall store it according to section 4.1.3.2) and shall delete any P-TMSI, P-TMSI signature, RAI and GPRS ciphering key sequence number. The SIM shall be considered as invalid for GPRS services until switching off or the SIM is removed. The new state is GMM-DEREGISTERED.
# 8 (GPRS services and non-GPRS services not allowed)（GPRS服务和非GPRS服务不允许）
The MS shall set the GPRS update status to GU3 ROAMING NOT ALLOWED (shall store it according to section 4.1.3.2) and shall delete any P-TMSI, P-TMSI signature, RAI and GPRS ciphering key sequence number. The new GMM state is GMM-DEREGISTERED. The new MM state is MM IDLE.
The MS shall set the update status to U3 ROAMING NOT ALLOWED, shall delete any TMSI, LAI and ciphering key sequence number. The SIM shall be considered as invalid for GPRS and non-GPRS services until switching off or the SIM is removed.
设备遇到#7和#8拒绝原因时，都需要拔插SIM 卡或者重启设备，设备才能重启找网，如上面协议介绍。
# 16 (MSC temporarily not reachable)（MSC临时不能到达）
# 17 (Network failure); （网络failure）
# 22 (Congestion)（拥塞）
The MS shall change to state GMM-REGISTERED.ATTEMPTING-TO-UPDATE-MM. Timer T3310 shall be stopped if still running. The routing area updating attempt counter shall be incremented.
If the routing area updating attempt counter is less than 5, and the stored RAI is equal to the RAI of the current serving cell and the GMM update status is equal to GU1 UPDATED:
- the MS shall keep the GMM update status GU1 UPDATED and changes state to GMM-REGISTERED.ATTEMPTING-TO-UPDATE-MM. The MS shall start timer T3311. When timer T3311 expires the combined routing area update procedure indicating “combined RA/LA updating with IMSI attach” is triggered again.
If the routing area updating attempt counter is greater than or equal to 5:
- the MS shall start timer T3302 and shall change to state GMM-REGISTERED.ATTEMPTING-TO-UPDATE-MM;
- a GPRS MS operating in MS operation mode A shall then proceed with appropriate MM specific procedure; a GPRS MS operating in MS operation mode B may then proceed with appropriate MM specific procedures. The MM sublayer shall act as in network operation mode II as long as the combined GMM procedures are not successful and no new RA is entered.
The new MM state is MM IDLE.
设备遇到上面的拒绝原因，需要停止T3310定时器，RAU timer需要加一，设备同时启动 T3311定时器，如果该定时器超时，设备会重新发起combined RA/LA updating with IMSI attach
，如果RAU counter timer大于等于5，需要启动T3302定时器，改变设备状态从GMM-REGISTERED.ATTEMPTING-TO-UPDATE-MM
# 9 (MS identity cannot be derived by the network)（网络无法识别MS）
The MS shall set the GPRS update status to GU2 NOT UPDATED (and shall store it according to section 4.1.3.2), enter the state GMM-DEREGISTERED, and shall delete any P-TMSI, P-TMSI signature, RAI and GPRS ciphering key sequence number. Subsequently, the MS may automatically initiate the GPRS attach procedure.
根据协议描述遇到#9需要更新状态为GU2 not update，设备接入deregister状态，并应删除任何P-TMSI，P-TMSI签名，RAI和GPRS加密密钥。 序列号，过后设备自动进行GPRS attach过程。
# 10 (Implicitly detached)（隐式去注册）
The MS shall change to state GMM-DEREGISTERED.NORMAL-SERVICE. The MS shall then perform a new attach procedure. The MS should also activate PDP context(s) to replace any previously active PDP contexts
根据协议规定，当时设备收到该拒绝码，设备会重新发起attach过程。
注册过程中遇到的拒绝码常见的主要是上面几种，后面会介绍下通话过程中遇到的拒绝码以及通话流程介绍。
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