In measuring the distance and the positional relationship between the equipments on a LAN, a first equipment transmits a request packet to each of the other equipments at a predetermined interval of time. When each of the other equipments receives the request packet, it supplies the response packet to...http://www.google.fr/patents/US5550807?utm_source=gb-gplus-shareBrevet US5550807 - Method of measuring distance between equipments on lan and distance measuring apparatus
Method of measuring distance between equipments on lan and distance ...