05852604 is referenced by 57 patents and cites 256 patents.

A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of frequency-agile modems each of which digitally synthesizes, on a timeSlot-by-timeSlot basis, the different channel-identifying intermediate frequencies needed to support communications between several of the subscriber stations and the base station. Power conservation is facilitated inter alia by controlling the assignment of modems to calls, maintaining unassigned modems in a powered-down state and by controlling the number of calls using the same time slot. Delay in assigning a powered-down modem to a call is eliminated by making available to all modems the highest quality synchronization information obtained by any of the active modems.

Title
Modularly clustered radiotelephone system
Application Number
129444
Publication Number
5852604
Application Date
May 20, 1996
Publication Date
December 22, 1998
Inventor
Eric Johns
Phoenixville
PA, US
David Vessal
Narberth
PA, US
Michael W Regensburg
Marlton
NJ, US
Mark A Lemmo
Huntington Valley
PA, US
Scott D Kurtz
Mt. Laurel
NJ, US
John D Kaewell
Bensalem
PA, US
Joseph J DiGiovanni
Malvern
PA, US
David M Cooley
Upper Darby
PA, US
Agent
Volpe and Koenig P C
Assignee
InterDigital Technology Corporation
DE, US
IPC
H04Q 7/04
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