Location-based geocasting and forwarding (LGF) routing protocol in mobile ad hoc network

Routing in mobile ad hoc networks (MANET) has been a subject of extensive research over the past several years. The location-based geocasting and forwarding routing protocol (LGF) is based on location information to reduce flooding and routing overhead. Unlike other position-based routing protocols, neighboring nodes in LGF that are in the forwarding zone rebroadcast a route request packet and send a route reply to the source. Other nodes that are beyond this zone do not participate. This algorithm reduces routing overhead, wireless bandwidth used and flooding of packets in the route discovery phase. The paper outlines the implementation of LGF in a real MANET test bed that integrates a GPS-free indoor location tracking mechanism with geocast-enhanced AODV-bis, an enhanced AODV-bis routing protocol which has been developed recently.