A Routing Protocol of QoS-Supported Wireless Sensor Network Based on Cost-Gradient
As a trend for the Wireless Sensor Network(WSN),supporting 'one-size-fits-all' requires routing protocols to provide multiple services for data transmissions on different QoS.By extending and improving the DD protocol,this paper proposes a new distributed QoS routing algorithm according to 'minimum path energy''minimum hop counts' which differentiates services for both real-relia time traffic and best-effort traffic at the precondition of reliability.Based on the analysis of result about the simulation,both the bility of the two traffics is achieved,and the improved routing protocol balances the energy consumption of the nodes in the whole network,with the network lifetime being prolonged.