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    A METHOD OF CONTROLLING INITIAL POWER RAMP-UP IN CDMA SYSTEMS BY USING SHORT CODES
    1.
    发明申请
    A METHOD OF CONTROLLING INITIAL POWER RAMP-UP IN CDMA SYSTEMS BY USING SHORT CODES 审中-公开
    通过使用短码控制CDMA系统中的初始功率放大的方法

    公开(公告)号：WO9750194A3

    公开(公告)日：1998-06-25

    申请号：PCT/US9710754

    申请日：1997-06-23

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH M ,  LOMP GARY R ,  HAIM JOHN W

    IPC: H04B1/707 ,  H04B7/216 ,  H04J13/16 ,  H04L7/00 ,  H04W52/36 ,  H04W52/50 ,  H04W52/60 ,  H04B7/005 ,  H04B7/26

    CPC classification number: H04W52/60 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/50

    Abstract: A system and method of controlling transmission power during the establishment of a channel in a CDMA communication system utilize the transmission of a short code from a subscriber unit to a base station 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 spreading code. The ramp-up starts from a power level that is guaranteed to be lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber stations and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

    Abstract translation: 该方法包括以初始预定功率电平从订户单元发送周期性信号。 功率电平以预定的上升速率增加。 当达到足够的检测功率时，在基站处检测周期信号。 发送来自基站的信号，确认已经检测到周期信号。 在用户单元接收确认信号。 当接收到确认信号时，停止预定功率电平斜升速率。 初始预定功率电平低于由基站检测所需的功率电平。 信号的功率电平以小于第一速率的第二预定速率增加。

    METHOD AND APPARATUS FOR PROCESSING MULTIPLE WIRELESS COMMUNICATION SERVICES
    2.
    发明申请
    METHOD AND APPARATUS FOR PROCESSING MULTIPLE WIRELESS COMMUNICATION SERVICES 审中-公开
    用于处理多个无线通信服务的方法和装置

    公开(公告)号：WO2006026249A3

    公开(公告)日：2006-06-08

    申请号：PCT/US2005029858

    申请日：2005-08-22

    Applicant: INTERDIGITAL TECH CORP ,  AYCIN ERICA ELLYN ,  KLAHN GERARD ,  HAQUE TANBIR ,  TYRA FRYDERYK ,  HAIM JOHN W

    Inventor： AYCIN ERICA ELLYN ,  KLAHN GERARD ,  HAQUE TANBIR ,  TYRA FRYDERYK ,  HAIM JOHN W

    IPC: H04B1/26

    CPC classification number: H04B1/1036 ,  H04B1/0003 ,  H04B17/336 ,  H04B17/382

    Abstract: A method and apparatus for processing multiple wireless communication services in a receiver (100). A receiver (100) receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer (110, 116) and a local oscillator (LO). The LO and sampling frequencies are adjusted such that the converted IF band signals of the input signals are spectrally adjacent or overlapping each other to some degree. SINAD of the services is measured at each of a plurality of spectrally overlapping conditions. The LO frequencies and the sampling frequency are then adjusted based on the SINAD measurement results.

    Abstract translation: 一种用于在接收机（100）中处理多个无线通信服务的方法和装置。 接收机（100）经由无线接口同时接收多于一个的无线通信服务。 每个服务通过不同的载波频带传输。 使用混频器（110,116）和本地振荡器（LO）将多个接收的载波信号下变频到中频（IF）频带。 调整LO和采样频率使得输入信号的转换的IF频带信号在某种程度上彼此频谱相邻或重叠。 在多个频谱重叠条件中的每一个处测量服务的SINAD。 然后根据SINAD测量结果调整LO频率和采样频率。

    IMPROVED CDMA TDD RECEIVER
    4.
    发明申请
    IMPROVED CDMA TDD RECEIVER 审中-公开
    改进的CDMA TDD接收机

    公开(公告)号：WO2004012348A3

    公开(公告)日：2004-07-29

    申请号：PCT/US0323681

    申请日：2003-07-29

    Applicant: INTERDIGITAL TECH CORP

    Inventor： DIFAZIO ROBERT A ,  HAIM JOHN W

    IPC: H04B7/005 ,  H04B7/26 ,  H04L12/56 ,  H04B7/216

    CPC classification number: H04B7/264 ,  H04B7/2618 ,  H04L1/0039 ,  H04L1/1671 ,  H04W52/44

    Abstract: A method for performing transport format combination indicator processing in a wireless communications system begins by collecting received samples for a timeslot (322). Processing of the received samples for the timeslot that does not require a transport format combination code list or TFC code list valid indicator is performed (342). Next, a TFCI value for the timeslot is received and is processed at the timeslot rate, producing the TFC code list and the TFC code list valid indicator (344). Then processing in the timeslot that requires the TFC code list or the TFC code list indicator is performed.

    Abstract translation: 在无线通信系统中执行传输格式组合指示符处理的方法是通过收集时隙（322）的接收样本开始的。 执行不需要传输格式组合代码表或TFC代码表有效指示符的时隙的接收样本的处理（342）。 接下来，接收时隙的TFCI值，并以时隙速率进行处理，产生TFC代码列表和TFC代码列表有效指示符（344）。 然后执行需要TFC代码列表或TFC代码列表指示符的时隙中的处理。

    SYSTEM OF CONTROLLING INITIAL POWER RAMP-UP IN CDMA SYSTEM BY USING SHORT CODE
    5.
    发明专利
    SYSTEM OF CONTROLLING INITIAL POWER RAMP-UP IN CDMA SYSTEM BY USING SHORT CODE 审中-公开

    公开(公告)号：JP2002330475A

    公开(公告)日：2002-11-15

    申请号：JP2002065420

    申请日：2002-03-11

    Applicant: INTERDIGITAL TECH CORP

    Inventor： OZLUTURK FATIH M ,  LOMP GARY R ,  HAIM JOHN W

    IPC: H04B1/707 ,  H04B7/216 ,  H04J13/16 ,  H04L7/00 ,  H04W52/36 ,  H04W52/50 ,  H04W52/60 ,  H04Q7/38 ,  H04J13/00

    Abstract: PROBLEM TO BE SOLVED: To improve a control method of transmission power ramp-up during the establishment of a communication channel between a subscriber unit and a base station in a radio CDMA communication system. SOLUTION: The system and method of controlling transmission power during the establishment of a channel in a CDMA communication system utilize the transmission of a short code from a subscriber unit to a base station 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 spreading code. The ramp-up starts from a power level that is guaranteed to be lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber stations and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

    ENHANCED AUTOMATIC GAIN CONTROL MECHANISM FOR TIMESLOTTED DATA TRANSMISSIONS
    6.
    发明申请
    ENHANCED AUTOMATIC GAIN CONTROL MECHANISM FOR TIMESLOTTED DATA TRANSMISSIONS 审中-公开
    增强数据传输的自动增益控制机制

    公开(公告)号：WO2004084460A3

    公开(公告)日：2004-12-16

    申请号：PCT/US2004007496

    申请日：2004-03-12

    Applicant: INTERDIGITAL TECH CORP ,  HAIM JOHN W ,  TYRA FRYDERYK ,  GUCCIONE LOUIS J ,  AXNESS TIMOTHY A ,  GRIECO DONALD M

    Inventor： HAIM JOHN W ,  TYRA FRYDERYK ,  GUCCIONE LOUIS J ,  AXNESS TIMOTHY A ,  GRIECO DONALD M

    IPC: H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H04B7/005 ,  H04J3/00

    CPC classification number: H04W52/52 ,  H03G3/001 ,  H03G3/3052 ,  H03G3/3078

    Abstract: An automatic gain control (AGC) method according to the present invention applies an initial gain by a digital AGC circuit (13) in a timeslot is determined using a final calculated gain from the same timeslot in the previous frame together with an offset factor. An erase function (14) is activated for a given data sample block when the number of saturated data samples that are detected within the block (17) exceeds a threshold value. The power measurement made by the AGC circuit and used to update the gain is adjusted based on the number of measured data samples that are saturated. These elements provide a gain limiting function and allows limiting of the dynamic range for further signal processing.

    Abstract translation: 根据本发明的自动增益控制（AGC）方法，利用来自前一帧的相同时隙的最终计算的增益以及偏移因子来确定时隙中的数字AGC电路（13）的初始增益。 当在块（17）内检测到的饱和数据样本的数量超过阈值时，针对给定数据采样块激活擦除功能（14）。 由AGC电路进行的用于更新增益的功率测量基于饱和的测量数据样本的数量进行调整。 这些元件提供增益限制功能，并允许限制用于进一步信号处理的动态范围。

    PRECISE SLEEP TIMER USING A LOW-COST AND LOW-ACCURACY CLOCK
    10.
    发明申请
    PRECISE SLEEP TIMER USING A LOW-COST AND LOW-ACCURACY CLOCK 审中-公开
    精密休眠定时器使用低成本和低精度时钟

    公开(公告)号：WO2005062855A3

    公开(公告)日：2007-06-28

    申请号：PCT/US2004042951

    申请日：2004-12-22

    Applicant: INTERDIGITAL TECH CORP ,  BULTAN AYKUT ,  HAIM JOHN W ,  KAZAKEVICH LEONID

    Inventor： BULTAN AYKUT ,  HAIM JOHN W ,  KAZAKEVICH LEONID

    IPC: H04B1/16 ,  G08C17/00 ,  H04B1/00 ,  H04B1/38 ,  H04B7/005 ,  H04B7/01 ,  H04B7/015 ,  H04W52/28

    CPC classification number: H04W52/288 ,  H04W52/0216 ,  H04W52/0248 ,  H04W52/0293 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/24

    Abstract: A wireless transmit/receive unit (WTRLJ) 11 uses an oscillator providing accuracy for synchronized communications parameters in an active mode (Fig. 1 , WTRLJ 11), and operates at reduced power during a discontinuous reception (DRX) mode (Fig. 1 WTRU 12). A real time clock (RTC) 28 is used as the frequency standard during the reduced power operation, and a frequency adjustment is effected while the RTC 28 is used as the frequency standard. By effecting the frequency adjustment, the RTC 28 is able to be used as the frequency standard for substantial time periods, thereby reducing power consumption of the WTRU 12 during the DRX mode.

    Abstract translation: 无线发射/接收单元（WTRLJ）11使用振荡器提供在活动模式下的同步通信参数的精度（图1，WTRLJ 11），并且在不连续接收（DRX）模式期间以降低的功率工作（图1 WTRU 12）。 使用实时时钟（RTC）28作为降频操作期间的频率标准，并且在使用RTC28作为频率标准时进行频率调整。 通过进行频率调整，RTC28能够被用作相当长的时间段的频率标准，从而在DRX模式期间降低了WTRU 12的功耗。

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