发明名称 |
Modulary clustered radiotelephone system |
摘要 |
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.
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申请公布号 |
US6208630(B1) |
申请公布日期 |
2001.03.27 |
申请号 |
US19980217640 |
申请日期 |
1998.12.21 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
COOLEY DAVID M.;DIGIOVANNI JOSEPH J.;KAEWELL JOHN D.;KURTZ SCOTT D.;LEMMO MARK A.;REGENSBURG MICHAEL W.;VESSAL DAVID;JOHNS ERIC |
分类号 |
H04J3/00;H04B1/16;H04B7/24;H04B7/26;H04J3/06;H04L5/26;H04Q1/00;H04W4/18;H04W48/08;H04W52/02;H04W56/00;H04W72/02;H04W72/04;H04W72/12;H04W74/00;H04W74/04;H04W84/14;H04W88/00;H04W88/02;H04W88/08;H04W99/00;(IPC1-7):H04J4/00 |
主分类号 |
H04J3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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