A New Mechanism for Congestion Control in Wireless Multimedia Sensor Networks for Quality of Service and Network Life Time

Akbar Majidi^1, and Hamid Mirvaziri²

¹Department of computer engineering, Science and Research Branch, Islamic Azad University, Kerman, Iran

²Computer Engineering Department at Shahid Bahonar University of Kerman

Cite this paper:
Akbar Majidi and Hamid Mirvaziri. A New Mechanism for Congestion Control in Wireless Multimedia Sensor Networks for Quality of Service and Network Life Time. American Journal of Computing Research Repository. 2014; 2(1):22-27. doi: 10.12691/ajcrr-2-1-5

Abstract

In wireless multimedia sensor networks (WMSNs) a sensor node may have different types of sensor which gather different kinds of data. To support quality of service (QoS) requirements for multimedia applications having a reliable and fair transport protocol is necessary. One of the main objectives of the transport layer in WMSNs is congestion control. We observe that the information provided may have different levels of importance and argue that sensor networks should be willing to spend more resources in disseminating packets carrying more important information. In WMSN event-driven applications, it is critical to report the detected events in the area, resulting in sudden bursts of traffic due to occurrence of spatially-correlated or multiple events, causing loss of data. Also, nodes have very limited power due to hardware constraints. Packet losses and retransmissions resulting from congestion, cost precious energy and shorten the lifetime of sensor nodes. Till now, in WMSNs, Congestion control techniques are based on detection of congestion and recovery, but they cannot eliminate or prevent the occurrence of congestion. Collision is a symptom of congestion in the wireless channel and can result in a time-variant channel capacity. The main intention of this protocol is to be used as a mechanism for reducing congestion in the network by free resources to set accurate rates and priority data needs. If two nodes send their packets in the shortest path to the parent node in a crowded place, a source node must prioritize the data and uses data that have lower priorities of a suitable detour nodes consisting of low or non- active consciously. Proposed algorithm is applied to the nodes near the base station (which convey more traffic) after the congestion detection mechanism detected the congestion. The results obtained from simulation test done by NS-2 simulator indicate that the proposed model is more innovative and presents better performance in compare with CCF, PCCP and DCCP protocols.

Keywords:
wireless multimedia sensor networks congestion control energy collision

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