A communication method for a mobile communication system having a node for
sending data to a gateway via neighboring nodes and gateways 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, including:
transmitting via the gateway a message including path information and a
prefix; and setting a path for sending data to the node that sent the
message, when a 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.
