Information element | Presence requirement | Reference |
IMSI | Conditional | 7.7.2 |
Recovery | Optional | 7.7.11 |
Selection mode | Conditional | 7.7.12 |
Tunnel Endpoint Identifier Data I | Mandatory | 7.7.13 |
Tunnel Endpoint Identifier Control Plane | Conditional | 7.7.14 |
NSAPI | Mandatory | 7.7.17 |
Linked NSAPI | Conditional | 7.7.17 |
Charging Characteristics | Optional | 7.7.23 |
Trace Reference | Optional | 7.7.24 |
Trace Type | Optional | 7.7.25 |
End User Address | Conditional | 7.7.27 |
Access Point Name | Conditional | 7.7.30 |
Protocol Configuration Options | Conditional | 7.7.31 |
SGSN Address for signalling | Mandatory | GSN Address 7.7.32 |
SGSN Address for user traffic | Mandatory | GSN Address 7.7.32 |
MSISDN | Conditional | 7.7.33 |
Quality of Service Profile | Mandatory | 7.7.34 |
TFT | Conditional | 7.7.36 |
Trigger Id | Optional | 7.7.41 |
OMC Identity | Optional | 7.7.42 |
Private Extension | Optional | 7.7.44 |
有几点说明下!
1 楼主看的GTP规范版本太老了,3.9的版本。下一个新一点的吧,建议用R8以前的,就下一个7.x的都可以啦。
2 在新版本的GTP规范中定义了create pdp context request消息中可以携带可选的IMEI(SV)信息元素。
3 注意,这里提到的是IMEI(SV),而不是IMEI,前者就是16个bit长,而后者IMEI就是15个bit长。在TS23.003的6.2章节:“IMEI and IMEISV的构成”中定义的。IMEISV的组成如下:
[attach]1308[/attach]
- Type Allocation Code (TAC). Its length is 8 digits;
- SNR is an individual serial number uniquely identifying each equipment within each TAC. Its length is 6 digits;
- Software Version Number (SVN) identifies the software version number of the mobile equipment. Its length is 2 digits.
而IMEI的15 bit组成是(下面内容是google的):
“IMEI=TAC+FAC+SNR+SP,其中TAC是批准型号码,共6位,FAC是最后组装地代码,共2位,但由于现在已经有JS已经能改串号了,所以NOKIA将所有的7、8位都改成00了,就是说已经看不出生产地了,SNR是序号,共6位,SP是备用码,就1位”。
参考这篇帖子的附件,http://www.gprshome.com/forum.php?mod=viewthread&tid=2227&extra=。2GHz_TD-S_WCDMA移动通信网_支持国际移动设备标识(IMEI)校验的终端设备技术要求。
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