Patent ID: 8737918
Filing Date: 2014-05-27
Classification: H04L,H04W

Abstract:
1. A routing method of a guard lamp, comprising: performing, by a neighbor setup guard lamp, a neighbor setup operation using a short distance wireless communication to form a guard lamp network using a communication link; transferring, by the neighbor setup guard lamp, an initialization request message (Init_Request Message) to a neighbor guard lamp and receiving an initialization response message (Init-Rep Message) from the neighbor guard lamp, the neighbor guard lamp newly joining the guard lamp network subsequent to the neighbor setup operation; receiving, by the neighbor setup guard lamp, a data message from the neighbor guard lamp; and repairing and resetting a path of the neighbor guard lamp, the path having an error caused by a link loss at the receiving of the data message, and wherein the repairing of the path of the neighbor guard lamp implemented corresponds with a status value of a neighbor table acquired at the neighbor setup operation, and the repairing includes: setting a detour path formed through one or more neighbor guard lamps positioned within the same hop when the neighbor setup guard lamp that set the neighbor setup operation among the neighbor guard lamps is in a detour state, and wherein the guard lamp network is formed by: wherein the neighbor setup guard lamp sets up an uplink path by performing the neighbor setup operation and sets up a downlink path by receiving the initialization response message from the neighbor guard lamp.