Improved and Simple Scheduling Scheme for Real-Time Data Communication in Wireless Sensor Networks

Data communication protocols in wireless sensor networks are influenced by the packet scheduling algorithm and the routing protocol. The packet scheduling algorithms can arbitrate the use of the network in a deadline sensitive manner to ensure that most packets make their deadline. The routing protocol can influence the paths taken in the network and the interaction between contending flows. Most existing work in real time data communication has focused on packet scheduling, with little work addressing the routing protocols and the interaction of both. In this paper, we propose a new scheduling algorithm (SESSN) which deals with all contributing components of the end-toend traveling delay of data packets in wireless sensor networks. SES-SN uses Exponential Increasing Delay Policy with a multipath routing protocol. The SES-SN makes more efficient used for the bandwidth and so decrease the packet miss ratio, drop ratio and overall delay which we consider them our accuracy measure in WSN communication. This scheme efficiently utilizes the limited energy and available memory resources of sensor nodes and also has a significant impact on the success of real-time sensor data communication and avoids collision. Keywords—Braided Routing, Multipaths Routing, Real-Time Communication, Scheduling Scheme, Sensor Networks.