Analysis of Packet Forwarding Approaches for QoS Routing in Ad Hoc Wireless Networks

Ad hoc wireless networks were considered to be the most suitable wireless communication system in order to support various applications in mobility environments. When providing real-time applications in ad hoc wireless networks, there are some requirements: i) the design of routing algorithm with packet delivery reliability while maintaining the established route for an arbitrary length of time (i.e., route duration); ii) the prompt transmission of the packets communication pairs (i.e., the source and destination) while minimizing packet delivery latency; iii) the minimization of the number of rebroadcasting nodes in route discovery procedure in order to suppress redundant routing overhead. In this paper, we analyze and compare packet forwarding approaches that have been proposed to alleviate network overhead problems and guarantee reliable and fast packet delivery to the destination in ad hoc wireless networks. Considering the discussion mentioned above, we conclude by highlighting opportunities for supporting multimedia application in ad hoc wireless networks with high mobility.