公开(公告)号：US20040085920A1

公开(公告)日：2004-05-06

申请号：US10695276

申请日：2003-10-28

Applicant: InterDigital Technology Corporation

Inventor： Nadir Sezgin ,  Fatih M. Ozluturk

IPC: H04B007/216

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70752 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L27/2053 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

Abstract: A synchronization signal is used in a wireless time division duplex communication system. The time division duplex communication system uses time slots in repeating frames for communication. The synchronization signal is transmitted from a base station to identify a code group associated with the base station. The synchronization signal comprises a spreading code associated with a selected base station. Binary bits identifying a code group associated with the selected base station are modulated by said spreading code using binary phase shift keying.

Abstract translation: 在无线时分双工通信系统中使用同步信号。 时分双工通信系统在重复帧中使用时隙进行通信。 从基站发送同步信号以识别与基站相关联的码组。 同步信号包括与所选择的基站相关联的扩展码。 识别与所选择的基站相关联的码组的二进制位由二进制相移键控由所述扩展码进行调制。

公开(公告)号：US20030185190A1

公开(公告)日：2003-10-02

申请号：US10329099

申请日：2002-12-23

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Narayan Parappil Menon ,  Fatih M. Ozluturk ,  Leonid Kazakevich

IPC: H04Q007/24

CPC classification number: H04W88/005 ,  H04L12/5692 ,  H04L12/66 ,  H04L2012/6481 ,  H04W88/16 ,  H04W92/14

Abstract: The present invention provides for a Time Division Duplex-Radio Local Area Network (TDD-RLAN) which includes a Radio Access Network Internet Protocol (RAN IP) gateway that enables connectivity to the public Internet. The system may serve as a stand-alone system or be incorporated into a UMTS used with conventional Core Network, particularly for tracking and implementing AAA functions in the Core Network.

公开(公告)号：US20030185189A1

公开(公告)日：2003-10-02

申请号：US10329098

申请日：2002-12-23

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Brian Gregory Kiernan ,  Narayan Parappil Menon ,  Fatih M. Ozluturk ,  Yi-Ju Chao ,  Shamim Akbar Rahman

IPC: H04Q007/24

CPC classification number: H04W88/005 ,  H04L12/5692 ,  H04L12/66 ,  H04L2012/6481 ,  H04W80/04 ,  H04W88/16 ,  H04W92/14

Abstract: The present invention provides for a Time Division Duplex - Radio Local Area Network (TDD-RLAN) which includes a Radio Access Network Internet Protocol (RAN IP) gateway that enables connectivity to the public Internet. The system may serve as a stand-alone system or be incorporated into a UMTS used with conventional Core Network, particularly for tracking and implementing AAA functions in the Core Network.

Abstract translation: 本发明提供了一种时分双工 - 无线局域网（TDD-RLAN），其包括能够连接到公共因特网的无线接入网络因特网协议（RAN IP）网关。 该系统可以用作独立系统或被并入到与常规核心网一起使用的UMTS中，特别是用于跟踪和实现核心网络中的AAA功能。

公开(公告)号：US20020110156A1

公开(公告)日：2002-08-15

申请号：US10080453

申请日：2002-02-22

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk

IPC: H04J003/12

CPC classification number: H04B7/2628 ,  H04B1/707 ,  H04B2201/70703 ,  H04J3/16 ,  H04J13/16 ,  H04L5/0053 ,  H04Q11/0435 ,  H04Q2213/1307 ,  H04Q2213/13098 ,  H04Q2213/13174 ,  H04Q2213/13204 ,  H04Q2213/13208 ,  H04Q2213/13209 ,  H04Q2213/13294 ,  H04Q2213/13332 ,  H04W24/00 ,  H04W28/22 ,  H04W36/06 ,  H04W52/267 ,  H04W52/42 ,  H04W72/0406 ,  H04W72/044 ,  H04W72/0453 ,  H04W76/10 ,  H04W76/30 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08

Abstract: A subscriber unit for wireless digital communications which supports all types of voice and data communications while utilizing the minimum amount of bandwidth for the particular application. The subscriber unit efficiently allocates bandwidth on demand. The subscriber unit establishes a channel and generates the necessary spreading codes to support the highest capacity channel desired. Portions of the communication spectrum bandwidth are not reserved until actually required. Since the call setup is performed at the beginning of a call from that subscriber unit, including the assignment of spreading codes, a subscriber unit can quickly gain access to the portion of the spectrum that is required to support the particular application.

Abstract translation: 用于无线数字通信的用户单元，其支持所有类型的语音和数据通信，同时为特定应用使用最小量的带宽。 用户单元根据需要高效地分配带宽。 用户单元建立一个信道并产生必要的扩展码，以支持所需的最高容量信道。 通信频谱带宽的一部分直到实际需要才被保留。 由于在来自该用户单元的呼叫开始时执行呼叫建立，包括扩展码的分配，用户单元可以快速地访问支持特定应用所需的频谱部分。

公开(公告)号：US20020106990A1

公开(公告)日：2002-08-08

申请号：US10046025

申请日：2001-10-29

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk

IPC: H04Q007/20

CPC classification number: H04W52/343 ,  H04W24/00 ,  H04W52/143 ,  H04W52/16 ,  H04W52/24 ,  H04W52/32 ,  H04W52/322 ,  H04W52/346 ,  H04W84/042 ,  H04W88/08

Abstract: A base station for use in a wireless spread spectrum communication system produces at least one channel signal and a global signal. The at least one channel and global signals are combined. The combined signal is transmitted. A desired transmit power level of the global signal is determined using a transmit power level of the combined signal. A transmit power level of the global signal is adjusted using the desired transmit power level.

Abstract translation: 用于无线扩频通信系统的基站产生至少一个信道信号和全局信号。 至少一个信道和全局信号被组合。 传输组合信号。 使用组合信号的发射功率电平确定全局信号的​​期望发射功率电平。 使用所需的发射功率电平调整全局信号的​​发射功率电平。

公开(公告)号：US20020090021A1

公开(公告)日：2002-07-11

申请号：US10011113

申请日：2001-11-13

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk

IPC: H04K001/00

CPC classification number: H04J13/10 ,  H04J13/0022 ,  H04J13/102 ,  H04J2013/0037

Abstract: An improved sequence design for code-division multiple access (CDMA) communications generating complex four-phase pseudo-random code sequences which may be directly mapped to a quadrature phase shift keying (QPSK) signal constellation.

Abstract translation: 一种用于生成可以被直接映射到正交相移键控（QPSK）信号星座的复合四相伪随机码序列的码分多址（CDMA）通信的改进的序列设计。

公开(公告)号：US20020082041A1

公开(公告)日：2002-06-27

申请号：US10087362

申请日：2002-03-01

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04B007/00 ,  H04B001/00

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

Abstract: A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.

Abstract translation: 在建立通信信道期间用于控制发送功率的基站在初始功率提升期间利用短码的接收。 短代码是用于基站检测的序列，其具有比常规访问码短得多的周期。 斜坡上升从低于基站检测所需功率电平的功率电平开始。 短码的功率快速增加，直到基站检测到信号。 一旦基站检测到短码，它就会发送一个指示已经检测到短码。

公开(公告)号：US20020067760A1

公开(公告)日：2002-06-06

申请号：US10043850

申请日：2002-01-11

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  David K. Mesecher ,  Alexander M. Jacques

IPC: H04K001/00

CPC classification number: H04B1/7085 ,  H04B1/30 ,  H04B1/707 ,  H04B1/70755 ,  H04B1/7093 ,  H04B1/7115 ,  H04B2201/70701 ,  H04L25/0212 ,  H04L27/0014 ,  H04L2027/0067

Abstract: The present invention is a user equipment for carrier offset recovery during reception of a communication signal over an air interface using a plurality of channels in a pilot signal. The user equipment comprises an adaptive match filter for producing a filtered signal using a weighting signal, a rake receiver for producing a filter weighting signal, and a means for defining the filter weighting signal with a correction signal. A channel despreader is also included in the user equipment for despreading the filtered signal using a pseudo-noise signal for a selected channel to produce a despread channel signal of the selected channel. A pilot channel despreader is coupled to the adaptive match filter output for despreading the filter signal using a pseudo-noise signal generated for the pilot channel, producing a despread pilot signal of the pilot channel. A hard decision processor, associated with a complex conjugate processor, is also included in the user equipment for producing the correction signal. A phase lock loop, which uses the despread pilot signal, produces a phase correction signal, which is applied to produce phase corrected channel signals.

Abstract translation: 本发明是一种在导频信号中使用多个信道通过空中接口在通信信号接收期间进行载波偏移恢复的用户设备。 用户设备包括用于使用加权信号产生滤波信号的自适应匹配滤波器，用于产生滤波器加权信号的瑞克接收机以及用校正信号定义滤波器加权信号的装置。 在用户设备中还包括一个信道去扩频器，用于使用所选信道的伪噪声信号对已滤波的信号进行解扩，以产生所选信道的解扩信道信号。 导频信道解扩器耦合到自适应匹配滤波器输出端，用于使用为导频信道生成的伪噪声信号对滤波器信号进行解扩，产生导频信道的解扩导频信号。 与复合共轭处理器相关联的硬决策处理器也包括在用于产生校正信号的用户设备中。 使用解扩导频信号的锁相环产生相位校正信号，其被施加以产生相位校正的信道信号。

公开(公告)号：US20020039382A1

公开(公告)日：2002-04-04

申请号：US10008411

申请日：2001-11-13

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  David K. Mesecher ,  Alexander M. Jacques

IPC: H04K001/00

CPC classification number: H04B1/7085 ,  H04B1/30 ,  H04B1/707 ,  H04B1/70755 ,  H04B1/7093 ,  H04B1/7115 ,  H04B2201/70701 ,  H04L25/0212 ,  H04L27/0014 ,  H04L2027/0067

Abstract: A digital spread spectrum communication system employing pilot-aided coherent multipath demodulation effects a substantial reduction in global-pilot and assigned-pilot overheads. The system and method uses a QPSK-modulated data signal whereby the modulated data is removed and the recovered carrier is used for channel amplitude and phase estimation. The resulting signal has no data modulation and is used as a pseudo-pilot signal. In conjunction with the pseudo-pilot signal, a multiple-input phase-locked loop is employed further eliminating errors due to carrier-offset by using a plurality of pseudo-pilot signals. A pilot signal is required to resolve absolute phase ambiguity, but at a greatly reduced magnitude.

公开(公告)号：US20030198279A1

公开(公告)日：2003-10-23

申请号：US10459035

申请日：2003-06-11

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Fatih M. Ozluturk ,  Sung-Hyuk Shin

IPC: H04B001/69

CPC classification number: H04W52/265 ,  H04B2201/709709 ,  H04W52/08 ,  H04W52/10 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/248 ,  H04W52/54 ,  H04W52/60

Abstract: A spread spectrum time division duplex user equipment uses frames having time slots for communication. The user equipment receives power commands and a first communication having a transmission power level in a first time slot. A power level of the first communication is measured as received. A pathloss estimate is determined based on in part the measured received first communication power level and the first communication transmission power level. A transmission power level for the second communication in a second time slot form the user equipment is set based on in part the pathloss estimate weighted by a quality factor adjusted by the power command. The quality factor decreases as a number of time slots between the first and second time slots increases.

Abstract translation: 扩频时分双工用户设备使用具有通信时隙的帧。 用户设备在第一时隙中接收功率命令和具有发射功率电平的第一通信。 第一通信的功率电平被测量为接收。 基于部分地测量的接收到的第一通信功率电平和第一通信发送功率电平来确定路径损耗估计。 基于由功率命令调整的质量因子加权的路径损耗估计，部分地设置用于在第二时隙中形成用户设备的第二通信的发送功率电平。 质量因子随着第一和第二时隙之间的时隙数量的增加而减小。