A Geocast scheme based on Successful Transmission Records with reachability to destination area on Wireless Ad Hoc Networks

We have proposed an improved flooding based geocast scheme, Geocast Scheme based on Successful Transmission Record (GSTR) for environments where reply messages to a query message sent by geocast are sent back to the sender of the query. In GSTR, transmission timing of broadcast of query packets is controlled using records of that the node has forwarded reply messages to query messages which have been sent to the same geographical destination. Using this strategy, the GSTR avoids redundant transmission of broadcast packets transmission from multiple nodes. We propose an improvement scheme of GSTR which controls the packet transmission timing using the prediction of the reachability to the destination of a forwarding packet. The simulation results show the GSTR and its variants slightly improve access success rate of query messages.