Optimized MAC and network cross layer protocol for OFDMA based ad-hoc networks

In this paper, a new MAC and Network cross layer protocol for OFDMA-based Multi-hop Ad-hoc Networks is proposed. In wireless network, when a route is established, the radio resource allocation problems at MAC layer may decrease the end to end performance proportionally with the length of each route. The contention at MAC layer may causes routing protocol to respond by finding new routes and routing table updates. The cross layer protocol allows layers to exchange state information in order to solve the problem and obtain higher performance. The proposed MAC and Network optimized cross layer protocol based the dynamic Sub-channel Assignment Algorithm in [4] to ensure the performance of ad-hoc and multi-hop networks is significantly improved.