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CN101836470A 用于启用LTE移动单元中非接入层(NAS)安全性的方法和设备 有权

用于启用LTE移动单元中非接入层(NAS)安全性的方法和设备
摘要：
一种执行长期演进(LTE)无线发射/接收单元(WTRU)中非接入层(NAS)(层3)的处理的方法和设备，所述方法和设备允许NAS协议层将L3消息路由到正确的NAS实体，并为新的NAS消息类型和信息元素进行编码。提出了启用NAS安全性的新架构。当产生NAS消息时，基于NAS消息的协议鉴别符(PD)、NAS消息的报头中的指示符字段、NAS消息的类型、NAS安全性状态变量以及根据上层协议的指示中的至少一者来做出是否对NAS消息进行加密、解密和/或完整性检查的决定。所述NAS安全性状态变量指示NAS安全性当前是否处于激活状态并且可以包括一个比特。
摘要（英）：

A method and apparatus performs processing of the non-access stratus (NAS) layer (layer 3) in long term evolution (LTE) wireless transmit/receive units (WTRUs), which allows the NAS protocol layer to route layer 3 messages to the correct NAS entity, and to encode new NAS message types and information elements. A new architecture is presented that enables NAS security. When a NAS message is generated, a determination is made as to whether or not to cipher, de-cipher and/or integrity check the NAS message based on at least one of a protocol discriminator (PD) of the NAS message, an indicator field in a header of the NAS message, the type of the NAS message, a NAS security state variable, and an indication by an upper layer protocol. The NAS security state variable indicates whether NAS security is currently active or not and may comprise one bit.

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