• Rishikesh Rawat
• Dr. Santosh Kumar Gandhi

Mutual exclusion (MUTEX) refers to a way of making sure that if one process is using shared modifiable data or resources then the other processes will be excluded from doing the same thing at the same time. A number of mutual exclusion algorithms are available in the literature, with different performance metrics and with different techniques. The Selection for a “good” mutual exclusion algorithm is a key point. These mutual exclusion algorithms can be broadly classified into token and non-token based algorithm. For distributed mutual exclusion problem in mobile environment we presented two algorithms. Both the algorithms are token based. The first algorithm is providing tokens to the nodes which are in critical section and the second one is hierarchical clustering based. A mobile ad-hoc networks (MANET) is hierarchically (two level) clustered to get logical tree network through which the token is passed from one node to another. However, we simulate the second algorithm only. The evaluation of the proposed algorithms shows that its message requirement is optimal. The proposed algorithm reduces the message complexity as well as response time, synchronization delay and it is also ascertained by simulation results

Mutual Exclusion, Permission based algorithm, Fault tolerance, Distributed system

"FAULT TOLERANT PERMISSION BASED CLUSTERED MUTUAL EXCLUSION ALGORITHM IN DISTRIBUTED SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.700-704, January-2019, Available :http://www.jetir.org/papers/JETIR1901695.pdf

"FAULT TOLERANT PERMISSION BASED CLUSTERED MUTUAL EXCLUSION ALGORITHM IN DISTRIBUTED SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp700-704, January-2019, Available at : http://www.jetir.org/papers/JETIR1901695.pdf