Casting multipath behavior into OANTALG to improve QoS

Mobile Ad-hoc Network (MANET) is a provisional network of moving wireless nodes, which have no infrastructural properties. Nodes vigorously exchange data packets among themselves without any reliance on a stationary site. Path connecting source nodes with destination nodes are vulnerable due to moving nature of nodes. This makes communication over ad hoc networks a difficult task. Multi-path routing is supposed to be a better routing method for wireless mobile ad hoc networks than single path routing. Multipath routing also achieves promising load balancing in network and is more pliant to route failures due to availability of alternative paths. Bio-inherited / Nature-inspired routing algorithms (Swarm Intelligence) such as multi-agent framework of Ant Colony Optimisation (ACO) have been offered very popularly and successfully for developing routing algorithms for MANETs. In this present paper, we have been augmenting our previous work (Gurpreet Singh et al. in Wireless Personal Communication 77(3): 1859-1886, 2014) in which the orientation factor was considered in a unipath environment with an adaption to multipath environment. It is typically groomed for purpose to achieve better reliability in data transmission and to enhance the Quality of Service (QoS) in MANETs. When the initial route fails to deliver the data packets to destination, the alternate route can then be used in order to provide break-less communication. Experimental analysis between classical methods and other available meta-heuristic proposed that the performance of the ACO based algorithms outshines its counterparts.