We provide the simulation of the two MAC comparing with CSMA/CA (not comprising duty cycle mechanism), the result show that the adaptive Time out MAC has more perfect performance in the scene of message rate fluctuant with time and location than S-MAC.

• 本文提供了对这两种MAC机制,结合CSMA/CA(不含占空比)的仿真,仿真结果表明对消息速率随时间和地点波动的场景适应性TimeoutMAC协议要优于S-MAC。