Patent ID: 6216019
Filing Date: 2001-04-10
Classification: H04B,H04L,H04W,Y02D

Abstract:
In a wireless communications network, a method in a base station to communicate with a remote unit that is in a sleep mode, the remote unit having a unique identification value, comprising the steps of:establishing a periodic reference instant of a time division duplex timing structure at the base station and at the remote station;determining a delay interval following said periodic reference instant at the base station, said delay interval being derived from said unique identification value of said remote unit; andtransmitting a message from the base station to the remote unit at a second instant following said delay interval, said remote unit having changed from said sleep mode to a standby mode after said delay interval;wherein said delay interval is established by a value at said periodic reference instant, that is incremented by a value related to a packet count at the base station and at the remote unit.