基于决定性能量比例的多径传输技术

Multipath Delivery Scheme Based on Decisive Energy Ratio

多径传输有两种模式:一种是主/备模式,只有在主路径失效之后,其它路径才可以传输数据;另一种是复制模式,数据同时从所有的路径传输。在传感器网络中,这两种模式都没有很好地结合能量节约和负载均衡。本文提出了一种传感器网络中能量敏感负载均衡的多径传输策略,数据基于决定性能量比例(DER)从源到目标沿着多径传输。这种技术不必定期计算 DER,容易实现而且开销较小。本文还提出带有过载避免机制的 DER 技术(DEROA),用来减少某些关键节点的过多通信量。仿真结果证明,DER 可以达到有效传输的目的。

Two multipath schemes are put forward. One is primary/backup mode, which only in the case of primary path is not available and the other path can take the charge of transmitting. The other is replication mode, which the packets are sent along all the multiple routes simultaneously. Both the schemes have not efficiently combined load balancing and energy awareness in sensor networks. This paper proposes an energy-aware load-balancing delivery scheme in sensor networks. The data flow can be transmitted from the source node to the destination node along the multiple paths according to their Decisive Energy Ratio （DER）, which is the proportion of the minimum equivalent residual energy of each path to the sum of the minimum equivalent residual energy on all the paths. This scheme needs not to calculate the DERs periodically, so it is easy to be implemented and brings fewer overheads. Also, DER with Overload Avoidance （DEROA） is proposed to avoid heavy traffic on some critical nodes. The simulations demonstrate how well DER will achieve the delivery efficiency.