Patent ID: 6374311
Filing Date: 2002-04-16
Classification: G06F,G06K,G08C,H01Q,H04B,H04L,H04W,Y02D

Abstract:
A communication network supporting wireless communication of messages, said communication network comprising:a first terminal node having a wireless receiver operable in a normal state; a second terminal node having a wireless receiver operable in a power saving state; an access point that attempts to immediately deliver messages destined for the first terminal node; the access point attempts to deliver messages destined for the second terminal node by transmitting at predetermined intervals beacons that identify that a message awaits delivery; the second terminal node synchronizes operation of its wireless receiver to receive the beacons from the access point; and the second terminal node determines from the received beacons that it has a message awaiting delivery and directs further operation of its wireless receiver to receive the message.