A New Approach to Overcome Problem of Congestion in Wireless Networks

Abstract

During past few years the wireless network has grown in leaps and bounds as it offered the end users more flexibility which enabled a huge array of services. All these services are achieved due to the network which is the backbone. The concept of the wireless network and the wireless devices also brings a lot of challenges such as energy consumption, dynamic configuration and congestion. Congestion in a network occurs when the demand on the network resources is greater than the available resources and due to increasing mismatch in link speeds caused by intermixing of heterogeneous network technologies. It is not limited to a particular point in the network but it can occur at various points in the network and it results into high dropping and queuing delay for packets, low throughput and unmaintained average queue length. It is factor that affects a network in a negative manner. Queue management provides a mechanism for protecting individual flows from congestion. One of the technique which uses Active Queue Management technique is RED. The basic idea behind RED queue management is to detect incipient congestion early and to convey congestion notification to the end-hosts, allowing them to reduce their transmission rates before queues in the network overflow and packets are dropped. Carnegie Mellon University proposed a new queue based technique for wireless network called CMUQ. The basic philosophy behind CMU queue is to prevent congestion. This paper introduces a new range variable and priority queue for existing CMU queue and for RED algorithm.