NAS协议解读.docx

编号：_______________本资料为word版本，可以直接编辑和打印，感谢您的下载NAS协议解读 甲 方：___________________乙 方：___________________日 期：___________________说明：本合同资料适用于约定双方经过谈判、协商而共同承认、共同遵守的责任与义务，同时阐述确定的时间内达成约定的承诺结果文档可直接下载或修改，使用时请详细阅读内容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 managementBits8765432101------EPS mobility management messages01000001Attach request01000010Attach accept01000011Attach complete01000100Attach reject01000101Detach request01000110Detach accept01001000Tracking area update request01001001Tracking area update accept01001010Tracking area update complete01001011Tracking area update reject01001100Extended service request01001110Service reject01010000GUTI reallocation command01010001GUTI reallocation complete01010010Authentication request01010011Authentication response01010100Authentication reject01011100Authentication failure01010101Identity request01010110Identity response01011101Security mode command01011110Security mode complete01011111Security mode reject01100000EMM status01100001EMM information01100010Downlink NAS transport01100011Uplink NAS transport01100100CS Service notification01101000Downlink generic NAS transport01101001Uplink generic NAS transportBitsTable 9.8.2: Message types for EPS session management11------1100000111000010110000111100010111000110110001111100100111001010110010111100110111001110110100001101000111010010110100111101010011010101110101101101011111011001110110101101101111101000EPS session management messagesActivate default EPS bearer context requestActivate default EPS bearer context acceptActivate default EPS bearer context rejectActivate dedicated EPS bearer context requestActivate dedicated EPS bearer context acceptActivate dedicated EPS bearer context rejectModify EPS bearer context requestModify EPS bearer context acceptModify EPS bearer context rejectDeactivate EPS bearer context requestDeactivate EPS bearer context acceptPDN connectivity requestPDN connectivity rejectPDN disconnect requestPDN disconnect rejectBearer resource allocation requestBearer resource allocation rejectBearer resource modification requestBearer resource modification rejectESM information requestESM information responseNotificationESM status[温馨提醒：合同协议是经验性极强的领域，无法思考和涵盖全面，最好 找专业律师起草或审核后使用。

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