提出了一种基于协处理器的媒介访问控制(MAC)体系结构,将不同MAC协议的信道争用机制映射为协处理器内部的软件程序,其特点是兼容IEEE802.15.4协议,利用可编程协处理器增强MAC的可重用性,能支持自适应睡眠媒介访问控制(S-MAC)、超时媒介访问控制(T-MAC)等无线传感器网络MAC协议.阐述了基于协处理器实现避免冲突的载波侦听多路访问(CSMA-CA)算法、S-MAC和T-MAC协议的方法,并在此基础上分析了CSMA-CA算法的软件时延.在现场可编程门阵列(FPGA)上实现整个MAC,实际测试结果表明:该MAC支持多协议,数据传输速率达20~250 Kbit/s,适应IEEE802.15.4协议要求,面积仅为30 567个等效门. A MAC-based media access control (MAC) architecture is proposed to map the channel contention mechanisms of different MAC protocols into a software program within the coprocessor, which is characterized by being compatible with the IEEE802.15.4 protocol and using a programmable association The processor enhances the reusability of MAC and supports the MAC protocol of wireless sensor networks such as S-MAC and T-MAC, etc. The carrier-based collision avoidance based on coprocessor is described (CSMA-CA) algorithm, S-MAC and T-MAC protocols, and then analyzes the software delay of the CSMA-CA algorithm.Furthermore, it is implemented on a field programmable gate array The whole MAC, the actual test results show that: The MAC supports multiple protocols, the data transfer rate of 20 ~ 250 Kbit / s, to meet the IEEE802.15.4 protocol requirements, an area of ​​only 30 567 equivalent gate.