节点剩余能量均衡的机会网络路由机制

Node residual energy balanced routing mechanism for opportunistic networks

机会网络中的节点能量受限且难以补充,其能量消耗情况影响着整个网络的生命周期和性能。针对社区机会网络中部分活跃节点频繁转发数据所导致的能量消耗过快问题,提出一种节点剩余能量均衡的机会网络路由机制,根据节点剩余能量及其在网络中的活跃程度感知其综合转发能力,进而合理地选择下一跳节点,有效减少不必要的转发次数,均衡网络负载。数值结果表明,所提出的机制能够在保证网络投递率的同时均衡网络能耗,延长网络生命周期。

In opportunistic networks, the node energy is limited and hard to recharge, and the energy con- sumption has a determinant impact on the network lifetime and performance. To solve the problem that socially popular nodes may quickly deplete their energy resources and consequently not participate in the routing process, the node activity and residual-energy are exploited to evaluate the comprehensive forwarding ability, and then an node residual energy balanced routing mechanism （NREB） for opportunistic networks is introduced. The NREB saves energy by rationally choosing the next-hop node to avoid unnecessary forwarding, which can also balance the network overhead. Simulation results show that the proposed mechanism can ensure the deliv- ery ratio while balancing the energy consumption between nodes and thus to prolong the network lifetime.