A Cross-Layer Design Based on Geographic Information for Cooperative Wireless Networks

TL;DR

This paper introduces CoopGeo, a cross-layer geographic routing framework for wireless networks that enhances reliability by integrating network, MAC, and physical layers through cooperative relaying and beaconless forwarding.

Contribution

It presents a novel cross-layer design that leverages geographic information for relay selection and contention-based forwarding to improve wireless network performance.

Findings

Enhanced reliability through cooperative relaying.

Efficient beaconless geographic forwarding scheme.

Improved system performance in wireless networks.

Abstract

Most of geographic routing approaches in wireless ad hoc and sensor networks do not take into consideration the medium access control (MAC) and physical layers when designing a routing protocol. In this paper, we focus on a cross-layer framework design that exploits the synergies between network, MAC, and physical layers. In the proposed CoopGeo, we use a beaconless forwarding scheme where the next hop is selected through a contention process based on the geographic position of nodes. We optimize this Network-MAC layer interaction using a cooperative relaying technique with a relay selection scheme also based on geographic information in order to improve the system performance in terms of reliability.