QoS evaluation for several typical topologies and routing algorithms of some WSNs in high-speed railway

This paper investigates the problem of node deployment and routing algorithm of several wireless sensor networks (WSNs) in high-speed railway based on quality of service (QoS). Unlike most of the existing works on QoS, which only consider partial indexes or do not deal with some specific scenarios, a relatively sophisticated QoS evaluation index system for high-speed railway operating environment is proposed, in which both the network performance and network cost are considered. Based on this system, an evaluation and analysis of several typical topologies and routing algorithms for linear network are carried out. And a method of node deployment with a routing algorithm which is suitable for high-speed railway is given in the end.