Congestion Avoidance using DSRM for WCDMA Networks

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2014 by IJETT Journal
Volume-9 Number-12
Year of Publication : 2014
Authors : Vandana Khare , Dr. Y. Madhavee Latha , Dr. D. SrinivasRao


Vandana Khare , Dr. Y. Madhavee Latha , Dr. D. SrinivasRao. "Congestion Avoidance using DSRM for WCDMA Networks", International Journal of Engineering Trends and Technology (IJETT), V9(12),589-593 March 2014. ISSN:2231-5381. published by seventh sense research group


This paper proposes a congestion avoidance mechanism for multimedia traffic that addresses unicast as well as multicast best effort flows specially for Wide band CDMA network. Present schemes uses a single queue per output port to buffer packets destined for that port. This often causes congestion leading to packet loss &delay. Real time applications are very much sensitive with loss &delay occurs during transmission & reception. Therefore a necessity to develop a buffer management system that will an effectively accommodate both real time & non real time applications. In this paper, we propose a advance threshold buffer management scheme. This scheme uses dynamic source routing mechanism (DSRM) to minimize congestion during transmission & reception for wireless networks. To add fairness to the scheme, high priority packets are dropping during preactive period &low priority packets guaranteed a minimum buffer space. We simulated the scheme and found that DSR mechanism performs well in terms of packet loss, delay, congestion time and buffer utilization.


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Congestion time, WCDMA, buffer management, DSR, QoS