Patent ID: 7787424
Filing Date: 2010-08-31
Classification: H04L,H04W

Abstract:
1. A method for relaying packets through a relay node in a communication system comprising a source node, a destination node and at least one relay node to transfer packets transmitted from the source node to the destination node, the method comprising: comparing a potential table received from an adjacent node with a stored potential table from the destination node, the received potential table including a potential corresponding to a number of hops from the destination node, an address of the destination node and a sequence number, while the received potential table excludes routing information of a next node, wherein the next node is a node that will relay the packets and that is located on a route between the source node and the destination node; updating the packets when a sequence number of the received potential table is the same as a sequence number of the stored potential table and a received potential is smaller than a stored potential, or when a sequence number of the received potential table is larger than the sequence number of the stored potential table, and otherwise discarding the packets; broadcasting the updated packets; and repeating the comparing, the updating and the broadcasting until the destination node receives the packets transmitted from the source node, wherein the sequence number indicates the sequence number of the information generated by the destination node, and the destination node information can be updated using the sequence number.