A new Protocol for Controlling Congestion in Wireless Sensor Networks

Abstract

Due to inherent limitations and number of distributed sensor nodes in wireless sensor networks (WSNs), the number of generated packets will be increased and congestion will be produced in link level or node level. Hence, the number of lost packets will be increased and the network resources such as energy will be consumed in inappropriate manner. So, the congestion is one of the most important challeng in WSNs. In this paper, a method is provided for controlling congestion. For congestion detection, the queue lenghth will be used and the occupied level of node’s buffer is indication of congestion level. In the proposed scheme, when the congestion occures, the congested node informs its upstream neighbour nodes. In order to controlling congestion, the upstream nodes will be reduced the transmitted pacekt rate and selects another path for data transmission. In selecting secondary path for data transmission node considers parameters such as amount of available energy and the empty size of the buffer. Simulation results show that the proposed scheme improve the consumtion energy and packet deliver rate in compraition with PCCP [9].

Keywords

References

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Journal of Soft Computing and Information Technology
Volume 5, Issue 3 - Serial Number 3
January 2017
Pages 65-73

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