SYSTEM FOR LOCATION AWARENESS BASED CHIRP SPREAD SPECTRUM

摘要

PURPOSE: A CSS(Chirp Spread Spectrum) location awareness system is provided to constitute the awareness network using optimum route of calculated tag node position information. CONSTITUTION: An anchor node(302) is fixed to the inside of a cell. The anchor node generates a second data including the received time point and process time delay of first data received from the tag node. The anchor node transmits second data with the tag node. Base nodes(303,304) transmit the cell information which it is requested from the tag node. The base nodes produce the location of the tag node using the fixed location information of the anchor node and distance information.