无线传感器网络中双信道无信标地理路由协议

Dual-channel Beaconless Geographic Routing Protocol for Wireless Sensor Networks

提出跨层设计与无信标转发相结合的双信道无信标地理路由协议DBGR.物理层利用功率控制降低网络竞争强度和相关节点的能量消耗;MAC层使用双信道通信模式将控制报文和数据报文隔离并行传输,并通过预约唤醒避免数据信道的过早唤醒问题.实验结果表明,双信道并行传输、功率控制与无信标转发相结合的地理路由设计,可以有效缓解网络冲突,提高协议的能量效率和传输性能.

This paper proposes a dual-channel beaconless geographic routing protocol（ DBGR）. Based on the dual-channel communica- tion mode, DBGR can get rid of the collisions among control packets and data packets. Moreover, power control is applied to DBGR to degrade the contention intensity and save energy of the related nodes. DBGR accomplishes parallel transmitting in the two sub-chan- nels, and can timely wake up data sub-channel to solve the early wakeup problem. Simulation results show that DBGR can effectively alleviate network collisions thus to improve energy efficiency and shorten forwarding delay attributed to the combination of parallel transmitting mode and beaconless forwarding.