A survey on position-bosed routing in mobile ad hoc networks

We present an overview of ad hoc routing protocols that make forwarding dec isions based on the geographical position of a packet's destination. Other than the destination's position, each node need know only its own position and the position of its one-hop neighbors in order to forward packets, Sinc e it is not necessary to maintain explicit routes, position-based routing d oes scale well even if the network is highly dynamic. This is a major advan tage in a mobile ad hoc network where the topology may change frequently. T he main prerequisite for position-based routing is that a sender can obtain the current position of the destination. Therefore, recent ly proposed loc ation services are discussed in addition to position-based packet forwardin g strategies. We provide a qualitative comparison of the approaches in both areas and investigate opportunities for future research.