无线网络中基于位置的能量高效协作路由算法
doi: 10.3724/SP.J.1146.2011.00425
Energy-efficient Location-based Cooperative Routing in Wireless Networks
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摘要: 为了降低无线网络中路由的整体发射功率，该文提出了一种基于位置的能量高效协作路由(LBCR)算法。首先分析了协作链路在一定中断概率要求下的发射功率性能，理论分析表明，合适的协作节点可以降低协作链路的发射功率。在自适应转发分群路由(AFCR)算法的基础上，LBCR算法利用节点位置信息为每跳选择合适的中继节点，然后结合多跳协作策略，建立从源节点到目的节点的协作路由。仿真结果表明，与无协作的AFCR算法和基于一跳协作的MPCR算法相比，LBCR算法可以明显改善路由的整体发射功率。Abstract: An energy-efficient Location-Based Cooperative Routing (LBCR) algorithm is proposed to reduce the overall transmission power for routing in wireless networks. With theoretical analysis, appropriate relay node can reduce the transmission power of the cooperative link, given the outage probability of the link constrained at a certain target level. Based on the Adaptive Forwarding Cluster Routing (AFCR) algorithm, LBCR algorithm uses the location information of nodes to select appropriate relay node for each hop, and then combines multi-hop cooperation strategy to form the route from source node to destination node. Simulation results show that, compared with noncooperative routing algorithm and hop-by-hop cooperative routing algorithm, LBCR algorithm can obviously reduce the overall routing transmission power.
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