Patent ID: 7975069

Claim:
A terminal device comprising: a judgment unit that determines whether a first accumulative hop count included in a first route request (RREQ) packet exceeds a predetermined route decision value for limiting a hop count from a source node to a destination node; and a control unit that determines a route to the source node based on information included in the first RREQ packet if the judgment unit determines that the first accumulative hop count does not exceed the route decision value, wherein the judgment unit compares a second accumulative hop count included in a second RREQ packet that is received after the route is determined with the predetermined route decision value, and compares a second accumulative power included in the second RREQ packet with a first accumulative power included in the first RREQ packet, which is used to determine the route; and wherein the control unit updates the route based on a result of comparing the second accumulative hop count with the predetermined route value and the second accumulative power with the first accumulative power.