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    RANDOM ACCESS CHANNEL FOR OFDM-MIMO SYSTEM
    1.
    发明申请
    RANDOM ACCESS CHANNEL FOR OFDM-MIMO SYSTEM 审中-公开

    公开(公告)号：WO2007133652A3

    公开(公告)日：2007-11-22

    申请号：PCT/US2007/011334

    申请日：2007-05-09

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  OZLUTURK, Fatih

    Inventor： OZLUTURK, Fatih

    IPC: H04Q7/38

    Abstract: In orthogonal frequency division multiplexing (OFDM) - multiple-input multiple-output (MIMO) systems, a wireless transmit/receive unit (WTRU) selects (801) a random access channel (RACH) and a phase for a constant amplitude zero auto correlation (CAZAC) sequence (803) for RACH transmission. The WTRU then transmits (805) a RACH transmission to a Node B via the selected RACH. Once the RACH transmission is detected (807), the Node B sends (809) an acknowledgement (ACK) to the WTRU over an ACK channel. The Node B may transmit the ACK on a shared channel. The WTRU may ramp up transmit power while the RACH transmission is transmitted, or steps up transmit power of a subsequent RACH transmission. The RACH transmission and data transmission may be either time multiplexed or frequency multiplexed. A plurality of RACHs channels may be are defined and one of the defined RACHs may be selected at randomly or based on a predetermined criteria.

    MULTI-NETWORK LOCATION SERVICES SUPPORT
    2.
    发明申请
    MULTI-NETWORK LOCATION SERVICES SUPPORT 审中-公开
    多网络位置服务支持

    公开(公告)号：WO2005081796A2

    公开(公告)日：2005-09-09

    申请号：PCT/US2005/003920

    申请日：2005-02-07

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  OZLUTURK, Fatih

    Inventor： OZLUTURK, Fatih

    IPC: H04W64/00

    CPC classification number: H04W64/00

    Abstract: Location of a portable device with a transmitter, such as a wireless transmit/receive unit (WTRU) in a cellular telecommunications network, is obtained by a primary network augmented by data obtained from a diverse network. In a particular configuration, changes of the indication of the location of the portable device are used to update positional information, such as positional information obtained from a GPS receiver.

    Abstract translation: 具有诸如蜂窝电信网络中的无线发射/接收单元（WTRU）的发射机的便携式设备的位置通过由从不同网络获得的数据增强的主网络获得。 在特定配置中，使用便携式设备的位置的指示的改变来更新诸如从GPS接收器获得的位置信息的位置信息。

    METHOD AND APPARATUS FOR REDUCING ANTENNA CORRELATION
    4.
    发明申请
    METHOD AND APPARATUS FOR REDUCING ANTENNA CORRELATION 审中-公开
    降低天线相关性的方法和装置

    公开(公告)号：WO2006017850A2

    公开(公告)日：2006-02-16

    申请号：PCT/US2005/028450

    申请日：2005-08-11

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  OZLUTURK, Fatih ,  PIETRASKI, Philip, J.

    Inventor： OZLUTURK, Fatih ,  PIETRASKI, Philip, J.

    IPC: H04B1/02 ,  H04B1/04 ,  H04B7/02

    CPC classification number: H04B7/10 ,  H01Q21/29 ,  H01Q25/00 ,  H04B7/04 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/066 ,  H04B7/0691 ,  H04B7/0697

    Abstract: The present invention is related to a method and apparatus for reducing antenna correlation between multiple antennas. A transmitter generates at least two beams with a plurality of antennas. The generated beams are spatially separated to point away each other. Therefore, the transmitted signals travel through different channel conditions and arrive at a receiver mutually uncorrelated. The beams may be generated by antennas having different antenna pattern, or by an array antenna. The beams may be polarized differently. The schemes may be implemented on a subcarrier basis in an orthogonal frequency division multiplexing (OFDM) system. Trellis coded mapping may be utilized for adjacent symbols to be mapped to antennas with low correlation.

    Abstract translation: 本发明涉及减少多个天线之间的天线相关性的方法和装置。 发射机产生具有多个天线的至少两个波束。 所生成的光束在空间上分离以指向彼此。 因此，所发送的信号通过不同的信道条件传播并且到达接收机相互不相关。 波束可以由具有不同天线图案的天线或阵列天线产生。 梁可以以不同的方式极化。 这些方案可以在正交频分复用（OFDM）系统中的子载波基础上实现。 网格编码映射可以用于相邻符号以被映射到具有低相关性的天线。

    WIRELESS COMMUNICATION METHOD AND SYSTEM FOR FORMING THREE-DIMENSIONAL CONTROL CHANNEL BEAMS AND MANAGING HIGH VOLUME USER COVERAGE AREAS
    5.
    发明申请
    WIRELESS COMMUNICATION METHOD AND SYSTEM FOR FORMING THREE-DIMENSIONAL CONTROL CHANNEL BEAMS AND MANAGING HIGH VOLUME USER COVERAGE AREAS 审中-公开
    用于形成三维控制通道的无线通信方法和系统以及管理高容量用户覆盖区域

    公开(公告)号：WO2005120096A2

    公开(公告)日：2005-12-15

    申请号：PCT/US2005/017609

    申请日：2005-05-20

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  GOLDBERG, Steven, Jeffrey ,  OZLUTURK, Fatih ,  PAN, Jung-Lin ,  TSAI, Yingming

    Inventor： GOLDBERG, Steven, Jeffrey ,  OZLUTURK, Fatih ,  PAN, Jung-Lin ,  TSAI, Yingming

    IPC: H04Q7/20

    CPC classification number: H04W16/28 ,  H04W16/24

    Abstract: A wireless communication system and method generates and shapes one or more three-dimensional control channel beams for transmitting and receiving signals. Each three-dimensional beam is directed to cover a particular coverage area and beam forming is utilized to adjust bore sight and beam width of the three-dimensional beam in both azimuth and elevation, and the three-dimensional control channel beam is identified. In another embodiment, changes in hot-zones or hot-spots, (i.e., designated high volume user coverage areas), are managed by a network cell base station having at least one antenna. Each of a plurality of wireless transmit/receive units (WTRUs) served by the base station use a formed beam based on one or more beam characteristics. When the coverage area is changed, the base station instructs at least one of the WTRUs to change its beam characteristics such that it forms a return beam concentrated on the antenna of the base station.

    Abstract translation: 无线通信系统和方法产生并形成用于发送和接收信号的一个或多个三维控制信道波束。 每个三维光束被引导以覆盖特定的覆盖区域，并且利用光束成形来调节三维光束在方位角和仰角中的视野和光束宽度，并且识别三维控制信道光束。 在另一个实施例中，热区或热点（即，指定的大容量用户覆盖区域）的变化由具有至少一个天线的网络小区基站管理。 由基站服务的多个无线发射/接收单元（WTRU）中的每一个基于一个或多个波束特性使用形成的波束。 当覆盖区域改变时，基站指示至少一个WTRU改变其波束特性，使得它形成集中在基站的天线上的返回波束。

    DIGITAL BASEBAND RECEIVER WITH DC DISCHARGE AND GAIN CONTROL CIRCUITS
    6.
    发明申请
    DIGITAL BASEBAND RECEIVER WITH DC DISCHARGE AND GAIN CONTROL CIRCUITS 审中-公开
    带直流放电和增益控制电路的数字基带接收器

    公开(公告)号：WO2005002082A1

    公开(公告)日：2005-01-06

    申请号：PCT/US2004/014108

    申请日：2004-05-06

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  DEMIR, Alpaslan ,  KAZAKEVICH, Leonid ,  OZLUTURK, Fatih ,  NARAYAN, Geetha, Lakshmi

    Inventor： DEMIR, Alpaslan ,  KAZAKEVICH, Leonid ,  OZLUTURK, Fatih ,  NARAYAN, Geetha, Lakshmi

    IPC: H04B7/00

    CPC classification number: H04B1/30 ,  H03D3/008

    Abstract: A digital baseband (DBB) receiver for receiving and processing a wireless communication signal. The DBB receiver includes at least one low noise amplifier (LNA), at least one demodulator, a direct current (DC) discharge circuit and an LNA control circuit. The LNA selectively amplifies the communication signal. The demodulator outputs analog real and imaginary signal components on real and imaginary signal paths, respectively, in response to receiving the communication signal from the LNA. The DC discharge circuit selectively discharges DC accumulating on at least one of the real and imaginary signal paths. The LNA control circuit turns the LNA on or off.

    Abstract translation: 一种用于接收和处理无线通信信号的数字基带（DBB）接收机。 DBB接收器包括至少一个低噪声放大器（LNA），至少一个解调器，直流（DC）放电电路和LNA控制电路。 LNA选择性地放大通信信号。 解调器响应于接收到来自LNA的通信信号，分别在实信号路径和虚信号路径上输出模拟实信号和虚信号分量。 直流放电电路选择性地放电积累在实信号路径和虚信号路径中的至少一个上的DC。 LNA控制电路打开或关闭LNA。

    METHOD AND APPARATUS FOR SUBCARRIER AND ANTENNA SELECTION IN MIMO-OFDM SYSTEM
    8.
    发明申请
    METHOD AND APPARATUS FOR SUBCARRIER AND ANTENNA SELECTION IN MIMO-OFDM SYSTEM 审中-公开
    MIMO-OFDM系统中SUBCARRIER和天线选择的方法与装置

    公开(公告)号：WO2006020434A2

    公开(公告)日：2006-02-23

    申请号：PCT/US2005/027061

    申请日：2005-07-29

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  OZLUTURK, Fatih ,  PIETRASKI, Philip, J. ,  BULTAN, Aykut

    Inventor： OZLUTURK, Fatih ,  PIETRASKI, Philip, J. ,  BULTAN, Aykut

    IPC: H04L1/02

    CPC classification number: H04W52/262 ,  H04B7/046 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04L25/0206 ,  H04W52/42

    Abstract: A method and apparatus for radio resources control in a multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system are disclosed. Channel metric is calculated for each of a plurality of transmit antennas. Sub-carriers are allocated to each transmit antenna in accordance with the channel metric of each transmit antenna. Signals are transmitted using the allocated sub-carriers at each antenna. Adaptive modulation and coding and transmit power control of each sub-carrier may be further implemented in accordance with the channel metric. Power control may be implemented per antenna basis or per sub-carrier basis. In performing power control, a subset of transmit antennas may be selected and waterpouring may be applied only to the selected antennas. Waterpouring may be based on SNR instead of channel response.

    Abstract translation: 公开了一种用于多输入多输出（MIMO）正交频分复用（OFDM）通信系统中的无线资源控制的方法和装置。 为多个发射天线中的每一个计算信道度量。 根据每个发射天线的信道度量，将子载波分配给每个发射天线。 在每个天线处使用分配的子载波来发送信号。 可以根据信道度量进一步实现每个子载波的自适应调制和编码和发射功率控制。 功率控制可以基于每个天线或每个子载波来实现。 在执行功率控制时，可以选择发射天线的子集，并且可以仅对所选择的天线进行浇水。 灌水可以基于SNR而不是通道响应。

    POWER CONTROL DURING A TRANSMISSION PAUSE
    10.
    发明申请
    POWER CONTROL DURING A TRANSMISSION PAUSE 审中-公开
    传输暂停期间的电源控制

    公开(公告)号：WO2004045083A2

    公开(公告)日：2004-05-27

    申请号：PCT/US2003/033695

    申请日：2003-10-23

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： SHIN, Sung-Hyuk ,  ZEIRA, Ariela ,  OZLUTURK, Fatih ,  GRIECO, Donald, M.

    IPC: H04B

    CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/24 ,  H04W52/287 ,  H04W52/44

    Abstract: A transmitting station performs closed loop power control prior to a transmission pause. A closed loop transmission power level prior to the pause is determined. A reference signal is received and a received power level of the reference signal prior to and during the transmission pause is determined. The measured reference signal received power levels are compared to a transmit power level of the reference signals to produce a pathloss estimate of the reference signal prior to and during the transmission pause. A new transmit power level is determined by adjusting the closed loop transmission power level by a change between the prior to and during pathloss estimates. A transmission power level of the transmitting station is set to the determined new transmit power level. A communication is transmitted at the set transmission power level.

    Abstract translation: 发送台在发送暂停之前执行闭环功率控制。 确定暂停之前的闭环发射功率电平。 接收参考信号，并且确定在传输暂停之前和期间的参考信号的接收功率电平。 将测量的参考信号接收功率电平与参考信号的发射功率电平进行比较，以在传输暂停之前和期间产生参考信号的路径损耗估计。 通过在路径损耗估计之前和之后的变化来调整闭环发射功率电平来确定新的发射功率电平。 将发送站的发送功率电平设定为所确定的新的发送功率电平。 以设定的发射功率电平发送通信。

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