Novel approach for mitigation of collision in mobile ad-hoc networks
Mahantesh Mathapati, Thangamuthu Senthil Kumaran, A. Krishna Kumar, Shiva Prasad K. H. · AIP conference proceedings · 2018
In MANETS, conventional back-off models do not precisely forecast the performance, hence, it suffer with high packet smash. The main objective of this work is to decrease collision using the Adaptive Contention Window Size Back-off (ACWSB) scheme for increasing window size and reduce collision by disseminating the traffic into a bigger time space. The ACWSB algorithm manages the contention window of the nodes suffering collisions. During packet transmission, the back-off counter is evenly selected from the given range of [0, CntWdw-1]. The value of CntWdw value is determined by the number of unsuccessful transfers for any packet. On first transmission effort, CntWdw is set to minimum value (Cmin). The value of CntWdw is doubled if the transmission attempt fails. The value of Cmin is, once again, set to minimum value on successful transmission. ACWSB is simulated in NS2 and it is compared with Binary Exponential Back-off Algorithm. The results illustrate improvement of ACWSB compared to that of the conventional back-off algorithm.