公开(公告)号：AU2005234744A1

公开(公告)日：2005-12-08

申请号：AU2005234744

申请日：2005-11-22

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D

IPC: H04B1/707 ,  H04J13/00

公开(公告)号：ES2236210T3

公开(公告)日：2005-07-16

申请号：ES01922797

申请日：2001-03-28

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D

IPC: H04B1/7073 ,  H04B1/62 ,  H04B1/7097 ,  H04L27/00 ,  H04B1/707

Abstract: Un método para reducir errores de transmisión en un sistema (25) de comunicación con CDMA que tiene por lo menos dos unidades de comunicación, en el que una primera unidad (29) de comunicación recibe una señal de comunicación con CDMA enviada desde una segunda unidad (27) de comunicación, en el que dicha primera unidad de comunicación (29) analiza los errores de dicha señal recibida; y genera una señal (119; 149) de corrección basada en dicho análisis, estando el método caracterizado porque dicha primera unidad (29) de comunicación corrige una señal (33) de información, que incluye voz o datos, utilizando dicha señal de corrección antes de la transmisión de dicha señal de información desde dicha primera unidad (29) de comunicación hacia dicha segunda unidad (27) de comunicación.

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

IPC: H04M11/06 ,  H04W4/06 ,  H04W48/08 ,  H04W52/02 ,  H04W72/04 ,  H04W74/00 ,  H04W74/04 ,  H04Q7/36

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：HK1057429A1

公开(公告)日：2004-04-02

申请号：HK04100193

申请日：2004-01-12

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D

IPC: H04B1/7073 ,  H04B1/62 ,  H04B1/7097 ,  H04L27/00 ,  H04B

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：BR0109904A

公开(公告)日：2004-03-30

申请号：BR0109904

申请日：2001-03-28

Applicant: INTERDIGITAL TECH CORP

Inventor： KAEWELL JOHN D

IPC: H04B1/7073 ,  H04B1/62 ,  H04B1/7097 ,  H04L27/00 ,  H04B1/707

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：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.

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.

公开(公告)号：AU7401194A

公开(公告)日：1995-04-18

申请号：AU7401194

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 ,  H04Q7/20

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.