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公开(公告)号：AU2008229751B2
公开(公告)日：2012-01-12
申请号：AU2008229751
申请日：2008-10-02
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: A method for facilitating inter-system handover by a multi-mode wireless transmit/receive unit (WTRU) is disclosed. The WTRU is capable of communicating in multiple wireless communication systems using different wireless communication protocols. A first wireless communication system provides a hot spot within the coverage area of a second wireless communication system. A base station in a cell in the second wireless communication system generates and transmits a message to inform the WTRU of the existence of the hot spot located in the vicinity of the cell. The WTRU receives the message and is therefore informed of the existence of the hot spot in the vicinity of the cell. C\j cm Cf') C\l C\j
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公开(公告)号：MY143899A
公开(公告)日：2011-07-29
申请号：MYPI20053749
申请日：2005-08-11
Applicant: INTERDIGITAL TECH CORP
Inventor： KWAK JAEYOUNG , OLESEN ROBERT L , BULTAN AYKUT , ZEIRA ELDAD , KOO CHANG-SOO , OZLUTURK FATIH M , HUANG YUEJIN , PASAD KALPENDU R
Abstract: THE PRESENT INVENTION IS RELATED TO A METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING (SFBC) IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) WIRELESS COMMUNICATION SYSTEM. THE PRESENT INVENTION IS APPLICABLE TO BOTH A CLOSED LOOP MODE AND AN OPEN LOOP MODE. IN THE CLOSED LOOP MODE, POWER LOADING AND EIGEN-BEAM FORMING ARE PERFORMED BASED ON CHANNEL STATE INFORMATION (CSI). A CHANNEL CODED DATA STREAM IS MULTIPLEXED INTO TWO OR MORE DATA STREAMS. POWER LOADING IS PERFORMED BASED ON THE CSI ON EACH OF THE MULTIPLEXED DATA STREAMS. SFBC ENCODING IS PERFORMED ON THE DATA STREAMS FOR EACH OF THE PAIRED SUBCARRIERS. THEN, EIGEN-BEAMFORMING IS PERFORMED BASED ON THE CSI TO DISTRIBUTE EIGENBEAMS TO MULTIPLE TRANSMIT ANTENNAS. THE POWER LOADING MAY BE PERFORMED ON TWO OR MORE SFBC ENCODING BLOCKS OR ON EACH EIGENMODES. ADDITIONALLY, THE POWER LOADING MAY BE PERFORMED ACROSS SUBCARRIERS OR SUBCARRIER GROUPS FOR WEAK EIGENMODES.
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公开(公告)号：DE69638368D1
公开(公告)日：2011-06-16
申请号：DE69638368
申请日：1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor： LOMP GARY R , KOWALSKI JOHN , OZLUTURK FATIH M , SILVERBERG AVI , REGIS ROBERT T , LUDDY MICHAEL , MARRA ALEXANDER , JACQUES ALEXANDER
IPC: H03K3/84 , H04B1/707 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
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公开(公告)号：AT508536T
公开(公告)日：2011-05-15
申请号：AT02005246
申请日：1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor： LOMP GARY R , KOWALSKI JOHN , OZLUTURK FATIH M , SILVERBERG AVI , REGIS ROBERT T , LUDDY MICHAEL , MARRA ALEXANDER , JACQUES ALEXANDER
IPC: H03K3/84 , H04B1/707 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号：MY141477A
公开(公告)日：2010-04-30
申请号：MYPI20030813
申请日：2003-03-07
Applicant: INTERDIGITAL TECH CORP
Inventor： KAZAKEVICH LEONID , KLAHN GERARD , OZLUTURK FATIH M
Abstract: METHOD AND APPARATUS FOR TRANSFER OF SIGNALS FROM MULTIPLE ANTENNAS (12,14), DOWN TO BASEBAND OVER A COMMON RADIO FREQUENCY (RF) CHAIN. ANTENNA SELECTION HAVING GREATER FLEXIBILITY AND APPLICABILITY TO BOTH UPLINK AND DOWNLINK WHEREIN PRIORITY IS GIVEN TO THE ANTENNA RECEIVING A BETTER QUALITY SIGNAL. MEASUREMENTS ARE TAKEN DURING EACH TIME SLOT TO DETERMINE THE WEIGHTING TO BE GIVEN TO THE ANTENNA WITH THE BETTER QUALITY SIGNAL. TECHNIQUES AND APPARATUS ARE PROVIDED TO TAKE MEASUREMENTS OVER A RANGE OF INTERVALS FROM TIME SLOTS TO SINGLE SYMBOLS, FOR EXAMPLE, TO SELECT THE BEST SIGNAL THE TECHNIQUES DESCRIBED HEREIN MAY BE USED INDIVIDUAL, AND IN SOME CASES ARE COMBINED TO RECEIVE ADDITIONAL BENEFITS IN EFFICIENCY.
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Patent Agency Ranking
公开(公告)号：SG151265A1
公开(公告)日：2009-04-30
申请号：SG2009017278
申请日：2004-11-12
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: METHOD AND SYSTEM FOR FACILITATING INTER-SYSTEM HANDOVER A method for facilitating inter- system handover by a multi-mode wireless transmit/receive unit (WTRU) is disclosed. The WTRU is capable of communicating in multiple wireless communication systems using different wireless communication protocols. A first wireless communication system provides a hot spot within the coverage area of a second wireless communication system. A base station in a cell in the second wireless communication system generates and transmits a message to inform the WTRU of the existence of the hot spot located in the vicinity of the cell. The WTRU receives the message and is therefore informed of the existence of the hot spot in the vicinity of the cell.
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公开(公告)号：DE60041836D1
公开(公告)日：2009-04-30
申请号：DE60041836
申请日：2000-08-23
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M , KIERNAN BRIAN
Abstract: A method for operating a user equipment (UE) employing a CDMA technique, the method comprising: means for combining a plurality of spread spectrum data signals, wherein the output of the combining is a combined signal having a fluctuating power level corresponding to the data signals; means for modulating the combined signal to produce an RF signal for transmission; means for measuring an average power of the output of the combining means for a selected time period; means for adaptively limiting an output of the combined means to a calculated level based at least in part on the measured average power; and means for transmitting the RF signal.
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公开(公告)号：ES2305637T3
公开(公告)日：2008-11-01
申请号：ES04022458
申请日：1998-10-06
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: Método de transferencia de una unidad móvil (25) desde una estación base existente a una estación base candidata en un sistema de comunicación de CDMA que comprende una pluralidad de estaciones base (17'', 19'', 21'', 23''), el método incluyendo las etapas de: recibir transmisiones a través de una unidad móvil desde una pluralidad de estaciones base candidatas (17'', 19'', 21'', 23''), cada transmisión conteniendo un código piloto global; adquirir un código piloto global de una de las estaciones base candidata (17'', 19'', 21'', 23'') usando un generador de códigos pilotos globales almacenado en una memoria de la unidad móvil; establecer una conexión de comunicación a la estación base candidata donde la unidad móvil adquiere un código piloto global con una potencia de transmisión mínima; caracterizado por: comparar la potencia de transmisión a la estación base candidata con la potencia de transmisión a la estación base existente; y completar una transferencia desde la estación base existente a la estación base candidata si la potencia de transmisión a la estación base candidata es inferior a la potencia de transmisión a la estación base existente.
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公开(公告)号：SG141427A1
公开(公告)日：2008-04-28
申请号：SG2008003527
申请日：1999-01-27
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
IPC: H04B1/10 , H04B1/7097 , H04B1/7107
Abstract: CANCELLATION OF PILOT AND UNWANTED TRAFFIC SIGNALS IN A CDMA SYSTEM A global pilot and unwanted traffic signal canceler for a spread spectrum communication system receiver that reduces their contributive noise effects. The present invention effectively cancels the global pilot and unwanted, active traffic signals prior to decoding a desired traffic signal at the receiver. The system and method decreases the bit error rate (BER) yielding an increased signal-to-noise ratio.
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公开(公告)号：NO325092B1
公开(公告)日：2008-02-04
申请号：NO20070112
申请日：2007-01-08
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
IPC: H04B1/10 , H04B1/7097 , H04B1/7107
Abstract: An apparatus for code division multiple access (CDMA) wireless communication comprising a receiver configured to receive a CDMA signal that includes a desired traffic signal and a second signal, the desired traffic signal being spread with a desired traffic spreading code and the second signal being spread with a second spreading code; means for generating a second signal cancellation component including means for generating a second signal strength by despreading the CDMA signal based on the second spreading code; means for generating a second signal cancellation factor by selectively combining the second signal spreading code and the desired traffic spreading code; and means for combining the second signal strength and the second signal cancellation factor to generate the second signal cancellation component; means for generating a despread desired traffic signal by despreading the CDMA signal based on the desired traffic spreading code; and means for combining the despread desired traffic signal and the second signal cancellation component to cancel second signal noise from the despread desired traffic signal.
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