The MAC protocol in a wireless multihop self-organizing sensor network must achieve two goals.The first is to efficiently and fairly share communication resources between sensor nodes.

• 无线传感器网络中，在单信道条件下，所有传感器节点共享一个无线信道，信道资源是非常有限的，因而需要一个有效的媒体访问控制(Medium Access Control)协议来协调各节点对信道的访问。