公开(公告)号：DK1530301T3

公开(公告)日：2010-08-09

申请号：DK05002616

申请日：2001-03-28

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D

IPC: H04B1/7073 ,  H04B1/62 ,  H04B1/7097 ,  H04L27/00

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

IPC: H04W92/10 ,  H04M11/06 ,  H04W28/02 ,  H04W52/02 ,  H04W74/00 ,  H04W74/04 ,  H04W88/08

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.

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

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

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.

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.

公开(公告)号：DK1530302T3

公开(公告)日：2008-04-07

申请号：DK05002617

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.

公开(公告)号：AU2008200938A1

公开(公告)日：2008-03-20

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.

公开(公告)号：AT385076T

公开(公告)日：2008-02-15

申请号：AT05002617

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.

公开(公告)号：DE69835177D1

公开(公告)日：2006-08-17

申请号：DE69835177

申请日：1998-03-04

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D

IPC: H03M13/00 ,  H03M13/41 ,  H04B1/707 ,  H04L1/00 ,  H04L1/08

Abstract: A communication system where the data rate of a given transmission has been encoded by a transmitter and is then used to adjust a plurality of convolutional decoders sharing common memory. The system uses common processing resources to provide up to four discrete channels having multi-rate convolutional error correction decoding resulting in a reduced silicon area and low power operation. The system is capable of supporting data communication at 8 kbps up to 64 kbps for high rate ISDN communication in receivers of both base station and consumer unit locations.

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.