Patent ID: 8165059

Claim:
A multi-hop communication method wherein a source terminal transmits and receives packets with a destination terminal through at least one relay terminal, wherein the source terminal scans receiving radio waves and detects channels which surrounding systems use and determines use channel candidates based on scan results and a table is made to refer to the use channel candidates and the table is implanted in a packet and transmitted to the relay terminal and the destination terminal, wherein the relay terminal and the destination terminal includes a table of use channel candidates extracted from the packet that is made and sent by the source terminal, wherein the relay terminal and the destination terminal selects a use channel for sending data packets from the channel candidates registered in the table and sends the data packets, wherein the destination terminal has a table for sending an ACK (Acknowledgement) packet or a NACK (Negative Acknowledgement) packet to the source terminal through the relay terminal, and wherein the destination terminal selects a use channel from the use channel candidates registered in the table and sends a confirmation packet, and the relay terminal selects a use channel from the channel candidates registered in the table and sends the confirmation packet.