本文采用了一种层次化、组件自治的仿真平台_J．Sim，对该平台

下的无线传感器网络相关组件进行了扩展。针对MAC协议的能量有效性

和底层可能遭受的攻击行为，进行了一系列的仿真实验，输出了相关的

能耗图。通过与其它MAC能耗仿真结果对比和底层攻击仿真结果分析，

我们得出该协议有着较好的能量有效性和攻击应对能力。-As the hardware platform iS lacked．we choose the J．Sim simulator

which is built upon the notion of the autonomous component programming

Ⅱ

model to test the performance of MAC．As tlle energy efficiency is considered

as the most important attribute of one MAC protoc01．we have made some

experiments on the attribute．In addition，we simulate some attacks on the

bottom—layer,and then test the effect of the early．warning algorithm．In view

of the comparison withⅣ认C energy consumption and the attack simulation

results，MAC achieves a good energy efficient and bottom．1ayer attack

responsibility．