False alarm detection to improve data accessibility in replica allocation over MANETs

Wireless networks have dominated wired. Wireless networks can be infrastructure based or infrastructureless. The MANET nodes act as both router and the end-user. MANET nodes should not maintain their position to establish a wireless interconnection. So, there is a chance for the network to be disconnected. This phenomenon is called as network partitioning. The technique of data replication has been widely discussed in order to improve data accessibility which decreases due to network partitioning. But, some nodes will show their selfish behavior so that effective replica allocation will become a failure. To inform the network nodes about this selfish behavior, a selfishness alarm will be raised. But, the alarm may also be initiated because of the same problem of network disconnections, and seems to be treated as the overall selfishness alarm. Such an alarm can be called as a false alarm. Here, we propose an innovative technique to detect this false selfishness alarm; and also to differentiate it from the actual selfishness alarm by setting a threshold value. The analysis of network parameters like link duration time and available energy are considered further to detect the broken link. Therefore, the selfish nodes can be eliminated properly; and then data replicas can be allocated to every non-selfish node effectively.