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公开(公告)号：CA2172972A1
公开(公告)日：1995-04-06
申请号：CA2172972
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , DIGIOVANNI JOSEPH J , KAEWELL JOHN D , KURTZ SCOTT D , LEMMO MARK A , REGENSBURG MICHAEL W , VESSAL DAVID , JOHNS ERIC
IPC: 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 , H04Q7/22 , H04M11/06
Abstract: A power-conserving time division multiple access (TDMA) radiotelephone syste m 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 time slot-by-t ime slot basis, the different channel-identifying intermediate 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, mainta ining unassigned modems in a powered-down state and by controlling the number of c alls 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 obtaine d by any of the active modems.
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公开(公告)号：CA2493967C
公开(公告)日：2009-01-20
申请号：CA2493967
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JOHN D , KURTZ SCOTT D , REGENSBURG MICHAEL W , LEMMO MARK A , COOLEY DAVID M , DIGIOVANNI JOSEPH J , VESSAL DAVID , JOHNS ERIC
Abstract: A power-conserving time division multiple access (TDMA) radiotelephone 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 time slot-by-time slot basis, the different channel- identifying intermediate 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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公开(公告)号：RU2341038C2
公开(公告)日：2008-12-10
申请号：RU2004114885
申请日：2004-05-14
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , DIGIOVANNI JOSEPH J , KAEWELL JOHN D , KURTZ SCOTT D , LEMMO MARK A , REGENSBURG MICHAEL W , VESSAL DAVID , JOHNS ERIC
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公开(公告)号：FI119091B
公开(公告)日：2008-07-15
申请号：FI20061051
申请日：2006-11-30
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , KAEWELL JOHN D , LEMMO MARK A , VESSAL DAVID , DIGIOVANNI JOSEPH J , KURTZ SCOTT D , REGENSBURG MICHAEL W , JOHNS ERIC
IPC: H04J3/00 , H04B1/16 , H04B7/24 , H04B7/26 , H04J3/06 , H04L5/26 , H04Q1/00 , H04Q3/66 , 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
Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.
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公开(公告)号：FI20080285A
公开(公告)日：2008-04-15
申请号：FI20080285
申请日：2008-04-15
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JOHN D , LEMMO MARK A , VESSAL DAVID , DIGIOVANNI JOSEPH J , KURTZ SCOTT D , REGENSBURG MICHAEL W , JOHNS ERIC , COOLEY DAVID M
IPC: H04B1/16 , H04J3/00 , 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
Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.
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Patent Agency Ranking
公开(公告)号：FI20051275A
公开(公告)日：2005-12-12
申请号：FI20051275
申请日：2005-12-12
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , KAEWELL JOHN D , LEMMO MARK A , VESSAL DAVID , DIGIOVANNI JOSEPH J , KURTZ SCOTT D , REGENSBURG MICHAEL W , JOHNS ERIC
IPC: H04B1/16 , H04J3/00 , 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 , H04Q
Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.
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公开(公告)号：CA2350879C
公开(公告)日：2005-05-03
申请号：CA2350879
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： VESSAL DAVID , JOHNS ERIC , REGENSBURG MICHAEL W , LEMMO MARK A , DIGIOVANNI JOSEPH J , COOLEY DAVID M , KURTZ SCOTT D , KAEWELL JOHN D
Abstract: A power-conserving time division multiple access (TDMA) radiotelephone 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 time slot-by-time slot basis, the different channel-identifying intermediate 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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公开(公告)号：FI20040117A
公开(公告)日：2004-01-28
申请号：FI20040117
申请日：2004-01-28
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , KAEWELL JOHN D , LEMMO MARK A , VESSAL DAVID , DIGIOVANNI JOSEPH J , KURTZ SCOTT D , REGENSBURG MICHAEL W , JOHNS ERIC
IPC: 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
Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.
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公开(公告)号：PL313771A1
公开(公告)日：1996-07-22
申请号：PL31377194
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , DIGIOVANNI JOSEPH J , KAEWELL JOHN D , KURTZ SCOTT D , LEMMO MARK A , REGENSBURG MICHAEL W , VESSAL DAVID , JOHNS ERIC
IPC: H04B1/16 , H04B7/24 , H04B7/26 , H04J3/00 , 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 , H04Q7/20
Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.
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公开(公告)号：NO961310D0
公开(公告)日：1996-03-29
申请号：NO961310
申请日：1996-03-29
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , DIGIOVANNI JOSEPH J , KAEWELL JOHN DAVID , LEMMO MARK A , VESSAL DAVID , KURTZ SCOTT D , REGENSBURG MICHAEL W , JOHNS ERIC
IPC: H04B1/16 , H04J3/00 , 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 , H04Q
Abstract: The present invention provides a method of minimizing synchronization delay in a radiotelephone system between a modular subscriber cluster communicating with a common base station, the modular subscriber cluster receiving repetitive time slots from the base station and having a plurality of frequency-agile modems, the method comprising the steps of: synchronizing a selected one of the modems to a selected time slot of the received time slots; generating a frame sync signal from said selected modem; and distributing said frame sync signal to remaining ones of the plurality of modems.
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