Zusammenfassung
We present an overview of ad hoc routing protocols that make
forwarding decisions 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. Since it is not necessary to maintain explicit
routes, position-based routing does scale well even if the network is
highly dynamic. This is a major advantage in a mobile ad hoc network
where the topology may change frequently. The main prerequisite for
position-based routing is that a sender can obtain the current position
of the destination. Therefore, previously proposed location services are
discussed in addition to position-based packet forwarding strategies. We
provide a qualitative comparison of the approaches in both areas and
investigate opportunities for future research
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