Premeditated Policies to Resource Reservation for Prioritized Traffic in Multi Hop Ad Hoc Networks

Abstract

There are many fields at where ad hoc networks are used, but applications like mission critical and commercial production or broadcasting which mostly contain real time audio and video streams and require absolute end to end guarantee for QoS. The key attribute these applications for guarantying for QoS is, they need routing path for connectivity like virtual leased line that is very difficult in the scenario of mobile ad hoc networks due to the mobility of nodes and changing topology conditions. With respect to transfer the contents, resources are required to be reserved along the selected path(s).In this regard previously two types of approaches are being used. load balancing in which multiple paths are selected and resources are reserved on those andpackets are sent along all paths and other to use redundant paths but using only one at one time by reserving resources on that. Onfailure offirst one, second is used and tried to reserve resources on that alternate path. In this paper we have introduced entirely a new approach in which we find multiple paths and select best three from all those as primary, secondary and ternary on certain criteria of maximum bandwidth and minimum hopes and these paths must be loopfree and node disjoined.Resources are reserved on both primary and secondary paths and allocate those reserved resources to different categories of traffic according to their priority on the basis ofservice agreement made with network. We have designed the complete mechanism for allocating the resources to different priority traffics and tried to avoid the route breaks.