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    Physical random access channel for slotted wireless communication systems
    21.
    发明申请
    Physical random access channel for slotted wireless communication systems 审中-公开
    时隙无线通信系统的物理随机接入信道

    公开(公告)号：US20040208136A1

    公开(公告)日：2004-10-21

    申请号：US10835515

    申请日：2004-04-29

    Applicant: InterDigital Technology Corporation

    Inventor： Stephen G. Dick ,  Ana Lucia Iacono ,  Janet Stern-Berkowitz

    IPC: H04J003/00 ,  H04B007/216

    CPC classification number: H04B7/2637 ,  H04B7/2618 ,  H04B7/2653 ,  H04W74/0866 ,  H04W74/0891

    Abstract: In one embodiment, a physical random access channel (PRACH) is used in communicating in a slotted wireless communication system. The slotted system uses repeating radio frame structure for communication. The PRACH is associated with a set of characteristics comprising: a set of channelization codes associated with the PRACH; at least one time slot associated with the PRACH; and a set of subchannels associated with the PRACH, the subchannels associated with a single time slot of the radio frames. In another embodiment, access service classes (ASCs) are separted in a wireless slotted communication system. Each ASC is associated with a unique set of channelization codes and subchannels of a physical random access channel (PRACH). The subchannels are associated with a single time slot of radio frames of the wireless slotted communication system.

    Abstract translation: 在一个实施例中，在时隙无线通信系统中使用物理随机接入信道（PRACH）进行通信。 开槽系统使用重复的无线电帧结构进行通信。 PRACH与一组特征相关联，包括：与PRACH相关联的一组信道化码; 与PRACH相关联的至少一个时隙; 以及与PRACH相关联的一组子信道，与无线电帧的单个时隙相关联的子信道。 在另一个实施例中，接入服务类别（ASCs）在无线时隙通信系统中被分离。 每个ASC与物理随机接入信道（PRACH）的一组唯一的信道化码和子信道相关联。 子信道与无线时隙通信系统的无线电帧的单个时隙相关联。

    Outer loop/weighted open loop power control
    23.
    发明申请
    Outer loop/weighted open loop power control 有权
    外环/加权开环功率控制

    公开(公告)号：US20040141483A1

    公开(公告)日：2004-07-22

    申请号：US10755759

    申请日：2004-01-12

    Applicant: InterDigital Technology Corporation

    Inventor： Ariela Zeira ,  Sung-Hyuk Shin ,  Stephen G. Dick

    IPC: H04B007/216

    CPC classification number: H04W52/225 ,  H04W52/12 ,  H04W52/24

    Abstract: A transmission power level for a user equipment in a wireless time division duplex communication system using code division multiple access is determined. An interference level is measured. A pathloss estimate is determined. A long term average of pathloss estimates is determined. A first weighting factor, null, is determined by the determined pathloss estimate, producing a weighted pathloss estimate. (1nullnull) is multiplied to the determined long term average of pathloss estimates, producing a weighted long term pathloss estimate. A target signal to interference ratio is provided. The target signal to interference ratio is updated using outer loop power commands. A transmission power level of the user equipment is determined by adding the weighted pathloss estimate to the weighted long term pathloss estimate to the measured interference level to the updated target signal to interference ratio to a constant value.

    Abstract translation: 确定使用码分多址的无线时分双工通信系统中的用户设备的发送功率电平。 测量干扰电平。 确定路径损耗估计。 确定路径损耗估计的长期平均值。 第一加权因子α由确定的路径损耗估计确定，产生加权路径损耗估计。 （1-α）乘以确定的路径损耗估计的长期平均值，产生加权的长期路径损耗估计。 提供目标信号与干扰比。 使用外环功率命令更新目标信号与干扰比。 通过将加权的路径损耗估计与加权的长期路径损耗估计相加到所测量的干扰电平，将更新的目标信号干扰比加到常数值来确定用户设备的发射功率电平。

    User equipment employing a time division duplex technique
    24.
    发明申请
    User equipment employing a time division duplex technique 失效
    采用时分双工技术的用户设备

    公开(公告)号：US20040022230A1

    公开(公告)日：2004-02-05

    申请号：US10435796

    申请日：2003-05-12

    Applicant: InterDigital Technology Corporation

    Inventor： Ariela Zeira ,  Sung-Hyuk Shin ,  Stephen G. Dick

    IPC: H04B007/212

    CPC classification number: H04W52/225 ,  H04W52/12 ,  H04W52/24

    Abstract: Outer loop/weighted open loop power control apparatus controls transmission power levels in a spread spectrum time division duplex communication user equipment (UE). The user equipment receives a communication including an transmitted power level and measures its received power level. Based in part on the measured power level and the transmitted power level, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the user equipment is based on in part weighting the path loss estimate in response to the estimate's quality.

    Abstract translation: 外环/加权开环功率控制装置控制扩频时分双工通信用户设备（UE）中的发射功率电平。 用户设备接收包括发射功率电平的通信并测量其接收功率电平。 部分地基于测量的功率电平和发射功率电平，确定路径损耗估计。 路径损耗估计的质量也被确定。 来自用户设备的通信的发射功率电平部分地基于估计的质量部分地加权路径损耗估计。

    Method and apparatus for reducing transmission errors in a third generation cellular system
    25.
    发明申请
    Method and apparatus for reducing transmission errors in a third generation cellular system 有权
    用于减少第三代蜂窝系统中的传输错误的方法和装置

    公开(公告)号：US20030235162A1

    公开(公告)日：2003-12-25

    申请号：US10431089

    申请日：2003-05-07

    Applicant: InterDigital Technology Corporation

    Inventor： Yi-Ju Chao ,  Stephen G. Dick ,  James M. Miller

    IPC: H04Q007/00 ,  H04J003/24

    CPC classification number: H04L1/0026 ,  H04L1/1671 ,  H04L1/1812 ,  H04L2001/125

    Abstract: A wireless communication method system for detecting and correcting transmission errors. The system includes at least one Wireless Transmit/Receive Unit (WTRU) in communication with a Node B. The Node B sends a transmission signal (e.g., containing a protocol data unit (PDU)) to the WTRU. The WTRU generates a Revert Message having a first field and a second field to indicate whether the transmission signal was successfully received at the WTRU. The WTRU inserts a NACK or ACK message into the first field and inserts a respective channel quality identifier (CQI) value corresponding to a worst or best possible value of CQI into the second field. The WTRU transmits the Revert Message to the Node B. The Node B compares the contents of the first field to the contents of the second field. The Node B resends the transmission signal to the WTRU if the contents of the first and second fields are not logically consistent.

    Abstract translation: 一种用于检测和校正传输错误的无线通信方法系统。 该系统包括与节点B通信的至少一个无线发射/接收单元（WTRU）。节点B向WTRU发送传输信号（例如，包含协议数据单元（PDU））。 WTRU产生具有第一字段和第二字段的还原消息，以指示传输信号是否在WTRU处被成功接收。 WTRU将NACK或ACK消息插入到第一字段中，并将对应于CQI的最差或最佳可能值的相应信道质量标识符（CQI）值插入第二字段。 WTRU向节点B发送还原消息。节点B将第一字段的内容与第二字段的内容进行比较。 如果第一和第二字段的内容在逻辑上不一致，则节点B将发送信号重新发送到WTRU。

    Balancing amplitude and phase
    28.
    发明申请
    Balancing amplitude and phase 失效
    平衡振幅和相位

    公开(公告)号：US20020110201A1

    公开(公告)日：2002-08-15

    申请号：US10122992

    申请日：2002-04-15

    Applicant: InterDigital Technology Corporation

    Inventor： Fatih M. Ozluturk ,  Stephen G. Dick ,  Leonid Kazakevich

    IPC: H04L027/22

    CPC classification number: H04L27/0014 ,  H04L27/22 ,  H04L2027/0016 ,  H04L2027/0024

    Abstract: A system for balancing a signal having I and Q components includes means for cross correlating the I and Q components to produce a cross correlation product; means for adjusting the gain of each I and Q signal component in accordance with said cross correlation product; and means for adding one component with the adjustable gain of the other component to produce a phase-balanced signal.

    Abstract translation: 用于平衡具有I和Q分量的信号的系统包括用于互相关联I和Q分量以产生互相关乘积的装置; 用于根据所述互相关乘积调整每个I和Q信号分量的增益的装置; 以及用于添加具有另一部件的可调增益的一个分量以产生相位平衡信号的装置。

    Periodic cell search
    29.
    发明申请
    Periodic cell search 有权
    定期细胞检索

    公开(公告)号：US20020075833A1

    公开(公告)日：2002-06-20

    申请号：US09923263

    申请日：2001-08-03

    Applicant: InterDigital Technology Corporation

    Inventor： Stephen G. Dick ,  Eldad Zeira

    IPC: H04J003/00

    CPC classification number: H04B1/7083 ,  H04B1/7075 ,  H04B1/70755 ,  H04B2201/70702

    Abstract: A wireless communication system which comprises a plurality of base stations and a user equipment. Each base station transmits a common primary synchronization code (PSC) in a primary synchronization channel at a different timing within a system frame, and a midamble code in a broadcast channel. A transmitted power level of the PSC and midamble code are at a common fixed ratio for each base station. The user equipment (UE) is capable of conducting cell search and includes a receiver for receiving said PSCs, a signal power measuring device for measuring the power level of received PSCs and identifying a frame timing of received PSCs which exceed a power threshold, and a processor for analyzing data signals received in the primary synchronization channel associated with the PSC with the highest power level of the received PSCs with a threshold exceeding power level. The processor also synchronizes or maintains synchronization with the base station associated with the highest PSC, the data signals including secondary synchronization codes.

    Abstract translation: 一种包括多个基站和用户设备的无线通信系统。 每个基站在系统帧内的不同定时在主同步信道中发送公共主同步码（PSC），并在广播信道中发送中间码。 对于每个基站，PSC和中间码的发射功率电平为公共固定比。 用户设备（UE）能够进行小区搜索，并且包括用于接收所述PSC的接收机，用于测量接收的PSC的功率电平并识别超过功率阈值的接收的PSC的帧定时的信号功率测量设备，以及 处理器，用于分析在具有阈值超过功率电平的所接收的PSC的最高功率电平的与PSC相关联的主同步信道中接收的数据信号。 处理器还与与最高PSC相关联的基站同步或维持同步，数据信号包括次同步码。

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