Patent ID: 7719987
Filing Date: 2010-05-18
Classification: H04L,H04W,Y02D

Abstract:
1. A route discovery method for obtaining route information to a destination when a radio communication device connected in a network requires route information to a destination radio communication device, comprising: a step in which a radio communication device receives a route request message broadcasted on the network, which includes a source address, a destination address, and a route request message identifier; a step in which the radio communication device decides a delay amount for delaying processing of response transmission or relay forwarding with respect to the route request message, based on the operating state of the radio communication device, in response to the route request message, when the received route request message is not one which has already been received, and the radio communication device itself is not the destination of the required route; a step in which the radio communication device times the delay amount and judges whether time has expired or not; a step in which the radio communication device performs response transmission or relay forwarding with respect to the route request message when the delay amount time has expired, and a step in which the radio communication device stores an identifier in the route request message, which identifies the operating state for deciding the delay amount; and a step in which the radio communication device discriminates the identifier which identifies the operating state for deciding the delay amount and which is stored in the received route request message, and wherein the radio communication device decides the delay amount based on the operating state determined according to information of the operating state assigned by the identifier which identifies the operating state.