Patent ID: 8270416

Claim:
A communication method for a mobile communication system having a node for sending data to a gateway of an ad hoc network via neighboring nodes and gateways of the ad hoc network for sending the data from the nodes to an Internet network, and for setting a path for data transmissions between a gateway and a node, comprising: broadcasting a message including path information and a prefix at predetermined intervals from the gateway to the nodes; setting a path for sending data to the gateway that sent the message, when the node that received the message, directly or via another node, has the data to be sent to the gateway; and sending the data via the set path, wherein the nodes do not perform a Gateway Solicitation Process before the gateway broadcasts the message, wherein the message includes a number of hops, wherein each node that receives the message replaces internet protocol (IP) address included in the message with its own IP address, wherein the Gateway Solicitation Process is a process for nodes entered in the ad hoc network to solicit a location of the gateway, and wherein each node that receives the message performs a global address generation process using the prefix to generate a unique address.