Patent ID: 8472319
Filing Date: 2013-06-25
Classification: H04B,H04L,H04W

Abstract:
1. A method of collecting delay information of a base station, the method comprising: transmitting, by the base station, a downlink delay measurement request message to child relay nodes of the base station; receiving, by the base station, a delay measurement reply message generated in response to the downlink delay measurement request message from the child relay nodes; and extracting, by the base station, downlink total delay information generated in a path from the base station to a terminal, based on the delay measurement reply message, wherein each of the child relay nodes transmits downlink delay information of each of the child relay nodes to respective lower node of each of the child relay nodes, the downlink delay information being sequentially generated in response to the downlink delay measurement request message, and a final relay node of the child relay nodes generates the delay measurement reply message including the downlink total delay information generated based on the downlink delay information of each of the child relay nodes.