Patent ID: 8331262
Filing Date: 2012-12-11
Classification: H04L,H04W

Abstract:
1. A method for relaying a route request RREQ message in a wireless communication system comprising a plurality of nodes in which a portion of the nodes form a tree route structure in which routes between nodes of the portion of the nodes are pre-established before establishing a route using RREQ and route reply RREP messages, the plurality of nodes including a destination node, a source node, and at least one intermediate node, the source node sending the RREQ message to the destination node via the at least one intermediate node, the method performed by one intermediate node of the at least one intermediate node and the method comprising: receiving the RREQ message; extracting address information of the destination node from the RREQ message; updating the RREQ message with first information for searching a backward route using stored information when the RREQ message is received along a route other than a route of the tree route structure; and transmitting the updated RREQ message.