A Geocast-based Multicast Method for Continuous Information Delivery in MANET

Geocasting is a routing method for ad hoc wireless networks that uses geographic information to multicast to nodes within the geocast region. The multicast members cannot receive multicast data continuously when they move outside the geocast region. Therefore, a geocast-based multicast method for continuous information delivery in MANET environments was developed. The method combines geocasting and GPSR to advertise a multicast session and gather multicast information from members. The multicast sender sends data packets using a multicast tree construction algorithm that uses location information of multicast members. We implemented the method in a network simulator, and showed the results of performance evaluation by simulation.