Implementation A Geographical and QoS Aware Routing Protocol in Wireless Sensor Networks
Seyed Mojtaba Hosseinirad, Nasrin Salehi, Mansour Salehi, Amir Hossein Mohajerzadeh, Elyas Sargazy · 2014
A sensor in wireless sensor networks (WSNs) periodically generates data as it monitors its environment. The major operation in such a network is the methodical gathering and sending of sensed data to the command node for more processing. Several geographical-based routing protocols have been proposed for data propagation in WSNs. In PBR, accumulating neighborhood information for selecting subsequent hop can obtain a high efficiency in position-based routing that is based on situation of neighboring nodes. In this paper, we combine both distance-based and direction-based methods to acquire trade-off between energy consumption and end-to-end delay. In distance-based topologies, the next hop node is selected according a node with the largest distance towards the sink. Furthermore, in direction-based topologies the subsequent hop is selected with the lowest angle deviation towards the sink. In addition, we have used a new technique that is based on sentinel nodes. Due to the presence of sentinel nodes, not all nodes of wireless sensor network need to be activated. Sensor nodes become active, when they have a responsibility to send packets to the sink.