A Stable Multipath QoS Routing Protocol Based on the Remaining Power of the Nodes in Opportunistic Networks
Xuebin Ma, Liting Wang · Advances in intelligent systems research/Advances in Intelligent Systems Research · 2014
With the growing popularity of smart devices, people have increasingly requirements for network's quality of service (QoS).There is a growing tendency in opportunistic networks to establish stable paths by using long path lifetimes, low routing overhead and high packet delivery ratio.According to recent analytical results, the lifetime of a path depends on the length of the path, the lifetime of each link and remaining power of nodes in the path.Meanwhile, the lifetime of a path can reflect the path stability.This paper presents a backup routing protocol based on the stable nodes (SNBR), it achieves high path stability by path length, link lifetime and remaining power of nodes.In SNBR, the primary path composes of stable nodes and intermediate nodes, and the stable nodes are determined by the remaining power of the nodes.In addition, every link of the backup path consists of disjoint sub-paths between two adjacent and stable nodes.Analytical results indicate that SNBR has good performance in terms of path lifetime and packet delivery ratio, and thus improves the QoS of the network.