Persistent Sessions By Reliable Server Pooling In Mobile Ad-Hoc Networks

In highly mobile ad-hoc environment, applications such as collaborative planning, military situational awareness, distance diagnosis, and disaster recovery, will place increasing demands on reliable transport protocols and persistent sessions. Traditional client-server communications may experience lossy and intermittent conditions that disrupt and often abort transport-protocol connections. The reliable server pooling is a comprehensive framework to handle session failures and increase the system's availability. It is an overlay network providing several reliability services, from simple server selection to a full session-failover capability. A wide range of simulation experiments indicate that the performance of the IETF RSerPool approach worsens rapidly as the networks become more unreliable or mobile due to two main shortcomings: the inaccuracy of the failuredetection mechanism for pooled servers, and high overhead of finding name servers. We introduce and evaluate alternative mechanisms that overcome these problems