Friday 29th of March 2024
 

Delay-aware Load Balanced Routing Protocol for IEEE 802.16 Wireless Mesh Networks


Sanjeev Jain, Vijay Shanker Tripathi and Sudarshan Tiwari

In IEEE 802.16 Wireless Mesh Networks (WMN) routing, delay aware load balancing can be achieved by selecting the shortest path with low latency and network load. But network load and latency together are not considered in most of the existing routing metrics. Here, we propose a delay aware load balanced routing protocol for wireless mesh networks by designing a combined route metric. Initially, we calculate the metric of traffic interference (TIM) which considers the traffic load of interfering neighbors. Next, we calculate the metric for end to end service delay (EDM) by using the expected time spent in transmitting all packets waiting for transmission through a link. This metric can be used to select the path with the lowest end-to-end service delay in terms of current network load. Using these two metrics we define a combined route metric for efficient route selection. A route discovery mechanism is proposed which broadcasts request packets along with expected link delay and load value. The suitable path is selected based upon the least routing metric value. A route maintenance mechanism is also proposed to maintain the stability of the network. Using this, frequent changes in the path can be avoided and transmission efficiency is increased. By simulation results, we show that the proposed protocol reduces the delay and overhead there by increasing the overall packet delivery ratio, when compared with existing protocols.

Keywords: wireless mess network; routing; IEEE 802.16; load balancing, delay

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ABOUT THE AUTHORS

Sanjeev Jain
Received the Bachelor’s Degree in Electronics and Communication Engineering from M.B.M Engineering College, Jodhpur, India subsequently M.E. from Malviaya National Institute of Technology, Jaipur, India. Currently pursuing Ph.D., From M.N.N.I.T, Allahabad, India. Simultaneously he is holding the post of Associate Professor at Government Engineering College Bikaner affiliated to Rajasthan Technical University, Kota, India. His research interests include Communication Engineering and Networking, Wireless Mesh Networks, Wireless Sensor Networks.

Vijay Shanker Tripathi
Received his Bachelor Degree in engineering from J.K Institute of applied physics and Technology University of Allahabad, Allahabad, the M. Tech. & Ph.D. from Motilal Nehru National Institute of Technology, Allahabad. His fields of interest are Wireless communication and Antenna He is author of more than 25 Journal/ conference papers.

Sudarshan Tiwari
Received Ph.D degree in Electronics and Computer Engg. from IIT Roorkee in 1994 and currently working as Director, NIT, Raipur before this he was professor of Electronics and communication Engineering. Department of MNNIT Allahabad, India. He is the author or co-author of more than 125 technical publications including journal and proceeding papers. His research interests include Communication Engineering & Networking, Wireless communication and networks, Wireless sensor networks, Network Coding and WDM optical Networks.


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