公开(公告)号：AT371309T

公开(公告)日：2007-09-15

申请号：AT04008295

申请日：2000-05-24

Applicant: INTERDIGITAL TECH CORP

Inventor： SEZGIN NADIR ,  OZLUTURK FATIH

IPC: H04B7/26 ,  H04B1/707 ,  H04J3/00 ,  H04J3/06 ,  H04J13/00 ,  H04L7/00 ,  H04W28/26 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

公开(公告)号：MX2007005642A

公开(公告)日：2007-06-25

申请号：MX2007005642

申请日：2005-10-26

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  BRIANCON ALAIN CHARLES LOUIS

IPC: H04B7/00 ,  H04B1/00 ,  H04M1/00 ,  H05K11/00

Abstract: Se proporciona un metodo y aparato para suministrar a una unidad transmisora/receptora inalambrica (WTRU) con acceso a por lo menos un dispositivo periferico o por lo menos un dispositivo periferico asociado con un dispositivo auxiliar disponible. Se determinan los requerimientos del dispositivo periferico actual de la WTRU. Se explora el ambiente de radiofrecuencia (RF) de la WTRU para determinar si existe algun dispositivo periferico inalambrico disponible o dispositivos auxiliares inalambricos proximos a la WTRU. Tambien se realiza una determinacion respecto a si existe un dispositivo periferico cableado o un dispositivo auxiliar cableado disponible. Se compila una lista de dispositivos perifericos disponibles en ese momento explorando por lo menos un registro de dispositivo perifericos asociado con por lo menos un dispositivo auxiliar inalambrico y un dispositivo auxiliar cableado. La lista se presenta a la pantalla de la WTRU y un usuario selecciona por lo menos uno de los dispositivos perifericos disponibles de la lista.

公开(公告)号：DE60313443D1

公开(公告)日：2007-06-06

申请号：DE60313443

申请日：2003-03-04

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  KLAHN GERARD ,  OZLUTURK FATIH

IPC: H04B1/02 ,  H03C7/02 ,  H04B7/02 ,  H04B7/08 ,  H04B7/185

Abstract: Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink is obtained by giving priority to the antenna receiving a better/best quality signal. Measurements are taken by at least a channel estimator during each time slot to determine the weighting to be given to the antenna with the better/best 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 individually, and in some cases are combined to receive additional benefits in efficiency. For example, one or more of recent and/or current channel estimation, history, optimization may be employed, in addition to channel estimation, to determine signal quality.

公开(公告)号：CA2507751C

公开(公告)日：2007-05-22

申请号：CA2507751

申请日：2000-05-24

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  SEZGIN NADIR

IPC: H04B1/707 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J13/00 ,  H04L7/00 ,  H04W28/26 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

Abstract: A base station sends a synchronization signal in an assigned time slot to a user equipment in a time division duplex code division multiple access communication system. The base station has an assigned code group out of a predetermined number of code groups. The base station transmits selected secondary synchronization code signals out of a set of secondary synchronization code signals. The plurality of secondary synchronization code signals number s less than half of the predetermined number of code groups. The user equipmen t identifies the transmitted selected secondary code signals. Based on in part the identified secondary synchronization code signals, the assigned code group i s determined.

公开(公告)号：MX2007001707A

公开(公告)日：2007-04-12

申请号：MX2007001707

申请日：2005-07-29

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  PIETRASKI PHILIP J ,  BULTAN AYKUT

IPC: H04J99/00 ,  H04W52/42

Abstract: Se proporciona un metodo y aparato para control de recursos de radio en un sistema de comunicacion de multiplexado de division de frecuencia ortogonal (OFDM) de entrada multiple y salida multiple (MIMO). La metrica de canal se calcula para cada una de una pluralidad de antenas transmisoras. Se asignan subportadoras a cada antena transmisora de acuerdo con la metrica de canal de cada antena transmisora. Se transmiten las senales utilizando las subportadoras asignadas a cada antena. Se pude implementar adicionalmente modulacion y codificacion asi como control de potencia de transmision adaptables de cada subportadora de acuerdo con la metrica de canal. El control de potencia se puede implementar en base por antena o en base por subportadoras. Al realizar el control de potencia, se pueden seleccionar un subconjunto de antenas transmisoras y se puede aplicar la transferencia uniforme unicamente a las antenas seleccionadas. La transferencia uniforme se puede basar en SNR en vez de respuesta de canal.

公开(公告)号：NO20071317L

公开(公告)日：2007-03-12

申请号：NO20071317

申请日：2007-03-12

Applicant: INTERDIGITAL TECH CORP

Inventor： OLESEN ROBERT LIND ,  KOO CHANG-SOO ,  BULTAN AYKUT ,  HUANG YUEJIN ,  OZLUTURK FATIH ,  ZEIRA ELDAD ,  KWAK JAEYOUNG ,  PASAD KALPENDU R

IPC: H04J13/00 ,  H04J99/00 ,  H04B10/04 ,  H04L27/08

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-beamforming 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.

公开(公告)号：NO20071262L

公开(公告)日：2007-03-08

申请号：NO20071262

申请日：2007-03-08

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH

IPC: H04J11/00 ,  H04J9/00 ,  H04J99/00 ,  H04Q7/20

Abstract: A method and apparatus for separating a user-data stream into a plurality of sub-streams. The apparatus determines channel conditions for each of a plurality of sub-carriers. Next, a plurality of sub-carriers are modulated and encoded with the sub-stream data according to the selected modulation schemes and coding rates. The modulated sub-carriers are each allocated to one or more transmit antennas for transmission. The adaptive modulation and coding function, the sub-carrier allocation function, and the power control function are jointly controlled to optimize throughput, signal quality, and system efficiency.

公开(公告)号：NO20071262A

公开(公告)日：2007-03-08

申请号：NO20071262

申请日：2007-03-08

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH

IPC: H04J11/00 ,  H04J9/00 ,  H04Q7/20

CPC classification number: H04L5/006 ,  H04B7/02 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0046 ,  H04L27/2608

公开(公告)号：NO20070158L

公开(公告)日：2007-01-09

申请号：NO20070158

申请日：2007-01-09

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH

IPC: H04B7/00 ,  H01Q21/00 ,  H04B1/00 ,  H04B7/005 ,  H04B7/02 ,  H04B7/06 ,  H04L12/28 ,  H04L12/56 ,  H04L45/42

Abstract: A method and system for utilizing smart antenna in transmission of messages between nodes (102a-102n) are disclosed. A wireless communication system includes a plurality of nodes (102a-102n), and each node is capable of being connected to each other node. At least a portion of the nodes are provided with a smart antenna (204) configured to generate a plurality of directional beams (109a-109h). Each node maintains a list of other nodes and beam configuration information to be used in transmission of messages to other nodes. When a source node is required to transmit to a target node, the source node retrieves the beam configuration information and transmits with a directional beam (109) directed to the target node.

公开(公告)号：MY127923A

公开(公告)日：2006-12-29

申请号：MYPI0204350

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  KOWALSKI JOHN ,  OZLUTURK FATIH ,  SILVERBERG AVI ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JAKES ALEXANDER

IPC: H03K3/84 ,  H04B7/216 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  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: A MULTIPLE ACCESS, SPREAD-SPECTRUM COMMUNICATION SYSTEM PROCESSES A PLURALITY OF INFORMATION SIGNALS RECEIVED BY A RADIO CARRIER STATION (RCS) OVER TELECOMMUNICATION LINES FOR SIMULTANEOUS TRANSMISSION OVER A RADIO FREQUENCY (RF) CHANNEL AS A CODE-DIVISION-MULTIPLEXED (CDM) SIGNAL TO A GROUP OF SUBSCRIBER UNITS (SUS). THE RCS RECEIVES A CALL REQUEST SIGNAL THAT CORRESPONDS TO A TELECOMMUNICATION LINE INFORMATION SIGNAL, AND A USER IDENTIFICATION SIGNAL THAT IDENTIFIES A USER TO RECEIVE THE CALL. THE RCS INCLUDES A PLURALITY OF CODE DIVISION MULTIPLE ACCESS (CDMA) MODEMS, ONE OF WHICH PROVIDES A GLOBAL PILOT CODE SIGNAL. THE MODEMS PROVIDE MESSAGE CODE SIGNAL SYNCHRONIZED TO THE GLOBAL PILOT SIGNAL. EACH MODEMS COMBINES AN INFORMATION SIGNAL WITH A MESSAGE CODE SIGNAL TO PROVIDE A CDM PROCESSED SIGNAL.THE RCS INCLUDES A SYSTEM CHANNEL CONTROLLER COUPLED TO RECEIVE A REMOTE CALL. AN RF TRANSMITTER IS CONNECTED TO ALL OF THE MODEMS TO COMBINE THE CDM SIGNAL. THE RF TRANSMITTER ALSO MODULATES A CARRIER SIGNAL WITH THE CDM SIGNAL AND TRANSMITS THE MODULATED CARRIER SIGNAL THROUGH AN RF COMMUNICATION CHANNEL TO THE SUS.EACH SU INCLUDES A CDMA MODEM WHICH IS ALSO SYNCHRONIZED TO THE GLOBAL PILOT SIGNAL. THE CDMA MODEM DESPREADS THE CDM SIGNAL, AND PROVIDES A DESPREAD INFORMATION SIGNAL TO THE USER.THE SYSTEM INCLUDES A CLOSED LOOP POWER CONTROL SYSTEM FOR MAINTAINING A MINIMUM SYSTEM TRANSMIT POWER LEVEL FOR THE RCS AND THE SUS, AND SYSTEM CAPACITY MANAGEMENT FOR MAINTAINING A MAXIMUM NUMBER OF ACTIVE SUS FOR IMPROVED SYSTEM PERFORMANCE.(FIG 1)