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公开(公告)号：HU9600793D0
公开(公告)日：1996-05-28
申请号：HU9600793
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , DIGIOVANNI JOSEPH J , JOHNS ERIC , KAEWELL JOHN D , KURTZ SCOTT D , LEMMO MARK A , REGENSBURG MICHAEL W , VESSAL DAVID
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：CA2496569A1
公开(公告)日：1995-04-06
申请号：CA2496569
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： COOLEY DAVID M , REGENSBURG MICHAEL W , VESSAL DAVID , DIGIOVANNI JOSEPH J , KAEWELL JOHN D , KURTZ SCOTT D , JOHNS ERIC , LEMMO MARK A
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公开(公告)号：CA2493967A1
公开(公告)日：1995-04-06
申请号：CA2493967
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： VESSAL DAVID , DIGIOVANNI JOSEPH J , JOHNS ERIC , KAEWELL JOHN D , REGENSBURG MICHAEL W , KURTZ SCOTT D , COOLEY DAVID M , LEMMO MARK A
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公开(公告)号：CA2350879A1
公开(公告)日：1995-04-06
申请号：CA2350879
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： VESSAL DAVID , REGENSBURG MICHAEL W , LEMMO MARK A , KAEWELL JOHN D , KURTZ SCOTT D , COOLEY DAVID M , DIGIOVANNI JOSEPH J , 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：AU2010200332B2
公开(公告)日：2014-04-03
申请号：AU2010200332
申请日：2010-01-29
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JOHN D
IPC: H04B1/62 , H04B1/7073 , H04B1/7097 , H04L27/00
Abstract: A wireless transmitter including: an input configured to receive a data signal; a mixer configured to mix the data signal with a correction signal producing a corrected signal, the correction signal changing a phase in the data signal to compensate for a measured phase error at a desired receiver; a modulator configured to modulate the corrected signal to radio frequency as a radio frequency signal; and an antenna configured to radiate the radio frequency signal.
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Patent Agency Ranking
公开(公告)号：AT465556T
公开(公告)日：2010-05-15
申请号：AT05002616
申请日：2001-03-28
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JOHN D
IPC: H04B1/7073 , H04B1/62 , H04B1/7097 , H04L27/00
Abstract: This Invention provides a method for reducing transmission errors by a user equipment (UE) when transmitting a communication signal, comprising the steps of: receiving an RF communication signal at said UE; analyzing said received signal for errors; generating a correction signal (119) based upon said analysis; and correcting said communication signal using said correction signal (119) prior to transmission of said communication signal from said UE.
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公开(公告)号：AU2010200332A1
公开(公告)日：2010-02-18
申请号：AU2010200332
申请日：2010-01-29
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JOHN D
IPC: H04B1/7073 , H04B1/62 , H04B1/7097 , H04L27/00
Abstract: This Invention provides a method for reducing transmission errors by a user equipment (UE) when transmitting a communication signal, comprising the steps of: receiving an RF communication signal at said UE; analyzing said received signal for errors; generating a correction signal (119) based upon said analysis; and correcting said communication signal using said correction signal (119) prior to transmission of said communication signal from said UE.
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公开(公告)号：AU2008200938B2
公开(公告)日：2010-02-18
申请号：AU2008200938
申请日：2008-02-28
Applicant: INTERDIGITAL TECH CORP
Inventor： KAEWELL JOHN D
IPC: H04B1/7073 , H04B1/62 , H04B1/7097 , H04L27/00
Abstract: This Invention provides a method for reducing transmission errors by a user equipment (UE) when transmitting a communication signal, comprising the steps of: receiving an RF communication signal at said UE; analyzing said received signal for errors; generating a correction signal (119) based upon said analysis; and correcting said communication signal using said correction signal (119) prior to transmission of said communication signal from said UE.
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公开(公告)号：CA2496569C
公开(公告)日：2008-09-23
申请号：CA2496569
申请日：1994-07-21
Applicant: INTERDIGITAL TECH CORP
Inventor： DIGIOVANNI JOSEPH J , COOLEY DAVID M , KURTZ SCOTT D , KAEWELL JOHN D , LEMMO MARK A , REGENSBURG MICHAEL W , JOHNS ERIC , VESSAL DAVID
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：RO120520B1
公开(公告)日：2006-02-28
申请号：RO200001262
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
Abstract: The invention relates to a method for hierarchically assigning of time slots in a radiotelephone system including a central base station, a plurality of remote subscriber stations, means defining a repetitive set of time slots meant for supporting radiotelephone calls between said subscriber stations and said central base station, a group of modems, each of said modems being capable of handling a plurality of said telephone calls on said time slots, which comprises the stages of : ascertaining the active modems having idle time slots; assigning preference ratings to said idle time slots of said group of modems; ascertaining which of said time slot has the highest of said preference ratings, assigning the time slot corresponding to said highest preference rating ascertained to the next one of said calls.
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