METHOD FOR CONFIGURING ROUTING PATH IN A WIRELESS AD-HOC NETWORK

摘要

A routing method in a wireless ad-hoc network is provided to smoothly offer modern multimedia services by considering a non-directional radio channel and multi-hop characteristics more exactly in finding out a path which can support a bandwidth required between a source node and a destination node in a wireless ad-hoc network using an IEEE 802.11 wireless interface. A source node broadcasts an RREQ(Routing Request) message to neighbor nodes in order to find out a path having a sufficient bandwidth to a destination node(S100). Receiving the RREQ message, each neighbor node records routing information, contained in the RREQ message, in its own routing table, and calculates an available bandwidth, the minimum bandwidth, and a bandwidth required for new traffic(S200). Based on the calculated bandwidths, each neighbor node judges whether it satisfies a preset sufficient bandwidth condition(S300). In case an arbitrary neighbor node satisfies the preset sufficient bandwidth condition, the arbitrary neighbor node broadcasts the RREQ message to the next neighbor nodes(S400). Afterwards, if the RREQ message is transmitted up to the destination node(S600), the destination node transmits an RREP(Routing Response) message to the source node in unicast(S700). As the source node receives the RREP message, routing is completed(S800).