无线网络必然要与Internet结合，实现移动用户手机上网，对无线应用协议栈WAP中各协议的性能进行仿真就显得非常必要，该文基于对WAP协议栈中的WTLS协议的仿真，评估了WTLS协议；并利用OPNET软件对该协议建立网络拓扑、建立节点模型等，给出了WTLS协议在用户节点数、用户节点通话时间以及信道速率变化等方面的性能仿真结果，重点指标包括对需实时响应的信号有重要影响的分组延迟、响应延迟变化量及响应时间。关 键 词 无线传输层安全协议; 性能指标; 仿真; 建立模型Abstract With the combination of wireless network and Internet, mobile subscribers will certainly access Internet, so it is very necessary to simulate protocols in WAP. Based on the simulation to WTLS protocol in WAP, this paper evaluates WTLS protocol. We adopt the software OPNET to build network topology, node model, etc, and acquire the protocol’s simulation performance results in moving subscriber numbers, moving subscribers’ average session time, channel rates variety, etc. The important indexes include packet delay, response delay change quantities and response time. These performances will seriously affect real time response signal.Key words WTLS protocol; Performance index; Simulation; Build model