中文摘要：

在IEEE802．15．6国际标准基础上，对无线体域网WBAN（wireless body area networks）的移动安全服务进行了研究。在安全协议中采用节点标识码取代节点地址，支持了节点的移动安全。另外以时间戳代替随机数，防止了消息重播。通信双方建立一个共享主钥MK（masterkey），使用MK建立成对临时钥PTK（pairwise temporal key），进行帧的认证与加密通信，有效保证了消息（数据）的安全，提供了节点的移动安全服务。给出了MK、PTK建立的改进过程及其详细流程图。

英文摘要：

Based on the IEEE 802. 15.6 international standard, the mobility security service of WBAN is studied. In the security protocol, with identification code instead of node address, security for the movement of a node is supported. In addition to time stamp instead of random number, message replay is also defended. The communication both parties first establish a shared master key （MK）, then MK is used to establish pairwise temporal key （PTK）, and the frame authentication and encryption communication is carried on, the message （data） security is effectively guaranteed, and the security service for node movement is provided. The establishment process of MK and PTK and their detail flow charts are presented.