admin 管理员组文章数量: 887021
2024年2月18日发(作者:javascript失去焦点事件)
1、 NAS消息类型:EPS mobility management message types和EPS session management
message types——(24301-a10(230页))。
2、 根据协议指示判断是移动性管理消息和会话管理消息:
Protocol discriminator——(24007-900(100页))
if(pd==2)
{
会话管理消息解码(8.3节)
}
else if(pd==7)
{
移动性管理消息解码(8.2节)
}
3、 移动性管理消息解码:
协议指示(Protocol discriminator)+安全头(Security header type):1字节
消息类型(Message type):1字节
其他字段解码。。。。。。
4、 会话管理消息解码:
协议指示(Protocol discriminator)+承载ID(EPS bearer identity):1字节
过程事务ID(Procedure transaction identity):1字节
消息类型(Message type):1字节
其他字段解码。。。。。。
注1:TLV(标志,长度,值)
注2:O:可选部分;M:必选固定;C:条件可选。
Table 9.8.1: Message types for EPS mobility management
Bits
8 7 6 5 4 3 2 1
0 1 - - - - - -
0 1 0 0 0 0 0 1
0 1 0 0 0 0 1 0
0 1 0 0 0 0 1 1
0 1 0 0 0 1 0 0
0 1 0 0 0 1 0 1
0 1 0 0 0 1 1 0
0 1 0 0 1 0 0 0
0 1 0 0 1 0 0 1
0 1 0 0 1 0 1 0
0 1 0 0 1 0 1 1
0 1 0 0 1 1 0 0
0 1 0 0 1 1 1 0
0 1 0 1 0 0 0 0
0 1 0 1 0 0 0 1
0 1 0 1 0 0 1 0
0 1 0 1 0 0 1 1
0 1 0 1 0 1 0 0
0 1 0 1 1 1 0 0
0 1 0 1 0 1 0 1
0 1 0 1 0 1 1 0
0 1 0 1 1 1 0 1
0 1 0 1 1 1 1 0
0 1 0 1 1 1 1 1
0 1 1 0 0 0 0 0
0 1 1 0 0 0 0 1
0 1 1 0 0 0 1 0
0 1 1 0 0 0 1 1
0 1 1 0 0 1 0 0
0 1 1 0 1 0 0 0
0 1 1 0 1 0 0 1
EPS mobility management messages
Attach request
Attach accept
Attach complete
Attach reject
Detach request
Detach accept
Tracking area update request
Tracking area update accept
Tracking area update complete
Tracking area update reject
Extended service request
Service reject
GUTI reallocation command
GUTI reallocation complete
Authentication request
Authentication response
Authentication reject
Authentication failure
Identity request
Identity response
Security mode command
Security mode complete
Security mode reject
EMM status
EMM information
Downlink NAS transport
Uplink NAS transport
CS Service notification
Downlink generic NAS transport
Uplink generic NAS transport
Table 9.8.2: Message types for EPS session management
Bits
8 7 6 5 4 3 2 1
1 1 - - - - - -
1 1 0 0 0 0 0 1
1 1 0 0 0 0 1 0
1 1 0 0 0 0 1 1
1 1 0 0 0 1 0 1
1 1 0 0 0 1 1 0
1 1 0 0 0 1 1 1
1 1 0 0 1 0 0 1
1 1 0 0 1 0 1 0
1 1 0 0 1 0 1 1
1 1 0 0 1 1 0 1
1 1 0 0 1 1 1 0
1 1 0 1 0 0 0 0
1 1 0 1 0 0 0 1
1 1 0 1 0 0 1 0
1 1 0 1 0 0 1 1
1 1 0 1 0 1 0 0
1 1 0 1 0 1 0 1
1 1 0 1 0 1 1 0
1 1 0 1 0 1 1 1
1 1 0 1 1 0 0 1
1 1 0 1 1 0 1 0
1 1 0 1 1 0 1 1
1 1 1 0 1 0 0 0
EPS session management messages
Activate default EPS bearer context request
Activate default EPS bearer context accept
Activate default EPS bearer context reject
Activate dedicated EPS bearer context request
Activate dedicated EPS bearer context accept
Activate dedicated EPS bearer context reject
Modify EPS bearer context request
Modify EPS bearer context accept
Modify EPS bearer context reject
Deactivate EPS bearer context request
Deactivate EPS bearer context accept
PDN connectivity request
PDN connectivity reject
PDN disconnect request
PDN disconnect reject
Bearer resource allocation request
Bearer resource allocation reject
Bearer resource modification request
Bearer resource modification reject
ESM information request
ESM information response
Notification
ESM status
版权声明:本文标题:NAS协议解读1 内容由网友自发贡献,该文观点仅代表作者本人, 转载请联系作者并注明出处:http://www.freenas.com.cn/jishu/1708211824h516816.html, 本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容,一经查实,本站将立刻删除。
发表评论