WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/10001753,
	  title     = {An Optimized Virtual Scheme for Reducing Collisions in MAC Layer },
	  author    = {M. Sivakumar and  S. Saravanan},
	  country	= {},
	  institution	= {},
	  abstract     = {The main function of Medium Access Control (MAC) is to share the channel efficiently between all nodes. In the real-time scenario, there will be certain amount of wastage in bandwidth due to back-off periods. More bandwidth will be wasted in idle state if the back-off period is very high and collision may occur if the back-off period is small. So, an optimization is needed for this problem. The main objective of the work is to reduce delay due to back-off period thereby reducing collision and increasing throughput. Here a method, called the virtual back-off algorithm (VBA) is used to optimize the back-off period and thereby it increases throughput and reduces collisions. The main idea is to optimize the number of transmission for every node. A counter is introduced at each node to implement this idea. Here counter value represents the sequence number. VBA is classified into two types VBA with counter sharing (VBA-CS) and VBA with no counter sharing (VBA-NCS). These two classifications of VBA are compared for various parameters. Simulation is done in NS-2 environment. The results obtained are found to be promising. 
},
	    journal   = {International Journal of Electronics and Communication Engineering},
	  volume    = {8},
	  number    = {12},
	  year      = {2014},
	  pages     = {1934 - 1937},
	  ee        = {https://publications.waset.org/pdf/10001753},
	  url   	= {https://publications.waset.org/vol/96},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 96, 2014},
	}