公开(公告)号：US07457349B2

公开(公告)日：2008-11-25

申请号：US10731918

申请日：2003-12-09

Applicant: Francesco Grilli ,  Serge Willenegger

Inventor： Francesco Grilli ,  Serge Willenegger

IPC: H04B1/00

CPC classification number: H04W64/00 ,  G01S5/10 ,  H04B1/7117 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: Unassigned finger processors are used to process and measure the arrival times of transmissions from base stations not in the active set. A first set of one or more base stations in active communication with the remote terminal is identified and each base station in the first set is assigned at least one finger processor. A second set of one or more base stations not in active communication with the remote terminal is also identified and an available finger processor is assigned to each of at least one base station in the second set. A (signal arrival) time measurement is then performed for each base station, and outputs indicative of the measurements are provided for further processing.

Abstract translation: 未分配的手指处理器用于处理和测量来自不在主动集合中的基站的传输的到达时间。 识别与远程终端主动通信的第一组一个或多个基站，并且向第一组中的每个基站分配至少一个手指处理器。 还识别出与远程终端未主动通信的第二组一个或多个基站，并且将可用的手指处理器分配给第二组中的至少一个基站中的每一个。 然后对每个基站执行A（信号到达）时间测量，并且提供指示测量的输出用于进一步处理。

公开(公告)号：US20080285539A1

公开(公告)日：2008-11-20

申请号：US11939455

申请日：2007-11-13

Applicant: Edward G. Tiedemann, JR. ,  Charles E. Wheatley III

Inventor： Edward G. Tiedemann, JR. ,  Charles E. Wheatley III

IPC: H04J3/06 ,  H04Q7/00

CPC classification number: H04J3/0682 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/7077 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04W56/0015 ,  H04W56/0045 ,  H04W92/20

Abstract: In the present invention, the slave base station attains synchronization with the reference base station through messages transmitted from and received by a mobile station either in the soft handoff region between the reference base station and the slave base station or within a range which allows the mobile station to communicate with the slave base station. When the mobile station is not in communication with both the reference base station and the slave base station, then the round trip delay between the mobile station and the reference base station is measured by the reference base station. The reference base station communicates the PN code used by the mobile station over the reverse link to the slave base station. The slave base station acquires the signal from the mobile station and determines when the signal from the mobile station arrives. The slave base station then makes an estimate as to the length of the delay between transmission of a signal from the mobile station to the slave base station. Based upon these measurements and estimates, the slave base station determines the error which is present in the slave base station system time.

Abstract translation: 在本发明中，从基站通过在参考基站和从基站之间的软切换区域内或在允许移动台的范围内由移动站发送和接收的消息与基准基站实现同步 站与从站基站进行通信。 当移动台不与参考基站和从基站进行通信时，由参考基站测量移动台与参考基站之间的往返延迟。 参考基站通过反向链路将由移动站使用的PN码传送到从基站。 从基站从移动台获取信号，并确定何时来自移动台的信号到达。 然后，从基站估计关于从移动台到从基站的信号的发送之间的延迟的长度。 基于这些测量和估计，从基站确定从基站系统时间中存在的错误。

公开(公告)号：US20080273522A1

公开(公告)日：2008-11-06

申请号：US12112570

申请日：2008-04-30

Applicant: Tao Luo ,  Peter Gaal

Inventor： Tao Luo ,  Peter Gaal

IPC: H04J3/06

CPC classification number: H04L27/2613 ,  H04B2201/70701 ,  H04J11/0076 ,  H04J13/0025 ,  H04J13/102 ,  H04L5/0039 ,  H04L5/0048 ,  H04L27/2626 ,  H04L27/2655

Abstract: Techniques for generating a synchronization signal (e.g., a secondary synchronization signal) based on an M-sequence are described. In one design, first and second sequences for a secondary synchronization signal may be generated based on different cyclic shifts of the M-sequence. The cyclic shifts may be determined based on cell ID and/or other information to send in the secondary synchronization signal. An output sequence may be generated based on the first and second sequences, e.g., by combining the first and second sequences and scrambling the combined first and second sequences with at least one scrambling sequence. The secondary synchronization signal may then be generated based on the output sequence, e.g., by mapping samples in the output sequence to subcarriers and generating an OFDM symbol with the mapped samples. Detection for the secondary synchronization signal may be efficiently performed using fast M-sequence transform (FMT).

Abstract translation: 描述了用于基于M序列生成同步信号（例如，次同步信号）的技术。 在一种设计中，可以基于M序列的不同循环移位来生成辅同步信号的第一和第二序列。 可以基于在次同步信号中发送的小区ID和/或其他信息来确定循环移位。 可以基于第一和第二序列，例如通过组合第一和第二序列并且将组合的第一和第二序列与至少一个加扰序列进行加扰来产生输出序列。 然后可以例如通过将输出序列中的采样映射到子载波并基于映射的采样生成OFDM符号，从而基于输出序列生成辅同步信号。 可以使用快速M序列变换（FMT）来有效地执行辅同步信号的检测。

公开(公告)号：US07444144B2

公开(公告)日：2008-10-28

申请号：US10772644

申请日：2004-02-05

Applicant: Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz ,  Philip J. Pietraski ,  Louis J. Guccione ,  Prabhakar R. Chitrapu

Inventor： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz ,  Philip J. Pietraski ,  Louis J. Guccione ,  Prabhakar R. Chitrapu

IPC: H04Q7/20 ,  H04J3/06 ,  H04B1/00

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70755 ,  H04B1/709 ,  H04B2201/70701 ,  H04W48/16 ,  H04W56/00

Abstract: A method and system for performing initial cell search is disclosed. Step 1 processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 processing is performed to obtain the toffset and code group. Step 3 processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.

Abstract translation: 公开了一种用于执行初始小区搜索的方法和系统。 执行步骤1的处理以检测峰值主同步码（PSC）位置（即码片偏移或码片位置）。 执行步骤2处理以获得t偏移量和代码组。 执行步骤3处理以识别执行初始小区搜索的WTRU可与其同步的基站的中间码。

公开(公告)号：US07437177B2

公开(公告)日：2008-10-14

申请号：US12075945

申请日：2008-03-14

Applicant: Fatih Ozluturk ,  Gary R. Lomp

Inventor： Fatih Ozluturk ,  Gary R. Lomp

IPC: H04B7/216 ,  H04B1/00 ,  H04B7/00

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：US07420946B2

公开(公告)日：2008-09-02

申请号：US10425665

申请日：2003-04-30

Applicant: Soon-Jin Kim ,  Hyun-Il Cho

Inventor： Soon-Jin Kim ,  Hyun-Il Cho

IPC: H04B7/216

CPC classification number: H04W88/06 ,  H04B1/707 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: A receiver provided in a mobile station communicating with at least two different types of base stations. In the receiver of the mobile station, a controller generates frequency channel control data for base stations at base station search times, analyzes signals received from the base stations through set frequency channels, and registers the base stations. A radio frequency (RF) module sets reception RF bands in response to the generated frequency channel control data, and down-converts signals received in the set reception RF bands. A searcher measures intensities of signals output from the RF module, and outputs a result of the measurement to the controller. A display unit indicates the base stations registered by the controller.

Abstract translation: 提供在与至少两种不同类型的基站通信的移动台中的接收机。 在移动台的接收机中，控制器在基站搜索时间生成用于基站的频道控制数据，通过设定的频道分析从基站接收到的信号，并登记基站。 射频（RF）模块响应于所生成的频道控制数据设置接收RF频带，并且对设置的接收RF频带中接收的信号进行下变频。 搜索器测量从RF模块输出的信号的强度，并将测量结果输出到控制器。 显示单元指示由控制器登记的基站。

公开(公告)号：US20080205555A1

公开(公告)日：2008-08-28

申请号：US11813865

申请日：2006-01-09

Applicant: Xia Zhu ,  Yan Li ,  Yanzhong Dai

Inventor： Xia Zhu ,  Yan Li ,  Yanzhong Dai

IPC: H04L27/06 ,  H04L25/02 ,  H04B1/707

CPC classification number: H04L25/0236 ,  H04B1/712 ,  H04B2201/70701

Abstract: A channel estimation method, comprising the steps of: receiving radio signals transmitted through wireless channel; calculating the channel fading coefficients of pilot symbols, which inserted in a time slot allocated to the wireless signals; estimating the channel fading coefficients of each of predefined groups of chips in the time slot step by step, by utilizing the channel fading coefficients of the pilot symbols and the correlation between the pilot symbols and traffic data in the time slot, wherein each group of chips is composed of predefined number of chips.

Abstract translation: 一种信道估计方法，包括以下步骤：接收通过无线信道发送的无线电信号; 计算插入到分配给无线信号的时隙中的导频符号的信道衰落系数; 通过利用导频符号的信道衰落系数和导频符号与时隙中的业务数据之间的相关性来估计时隙中每个预定义码片组的信道衰落系数，其中每组码片 由预定数量的芯片组成。

公开(公告)号：US07403557B2

公开(公告)日：2008-07-22

申请号：US10899846

申请日：2004-07-27

Applicant: Li Pan ,  Jigneshkumar Shah ,  Fenghua Liu

Inventor： Li Pan ,  Jigneshkumar Shah ,  Fenghua Liu

IPC: H04B1/69

CPC classification number: H04B1/7115 ,  H04B1/712 ,  H04B2201/70701

Abstract: Provided are improved systems and methods for spread spectrum communication employing hybrid Eb/No and pilot-based finger lock determination for RAKE receivers. Finger lock thresholds are periodically set using an extended time-averaged Eb/No traffic signal estimate for each finger mapped to an Ec/No pilot level, where the extended time-averaged Eb/No estimate is inversely proportional to the mapped Ec/No level, thus, decreasing the required Ec/No level when the Eb/No estimate increases and increasing the required Ec/No level when the Eb/No estimate decreases. Existing pilot-based finger lock algorithms may be used with the Ec/No threshold set using the extended time-averaged Eb/No estimate. When pilot signals are weak but traffic signals remain strong, fingers will remain locked to increase the combiner output signal-to-noise ratio.

Abstract translation: 提供了用于RAKE接收机的混合Eb / No和基于导频的手指锁确定的扩频通信的改进的系统和方法。 手指锁定阈值使用针对映射到Ec / No导频电平的每个手指的扩展时间平均Eb / No业务信号估计来定期设置，其中扩展的时间平均Eb / No估计与映射的Ec / No电平成反比 ，因此当Eb / No估计值增加时，减少所需的Ec / No电平，并且当Eb / No估计值降低时增加所需的Ec / No电平。 可以使用现有的基于导频的手指锁算法，使用扩展的时间平均Eb / No估计值设置Ec / No阈值。 当导频信号较弱但业务信号保持较强时，手指将保持锁定，以提高组合器的输出信噪比。

公开(公告)号：US07391753B2

公开(公告)日：2008-06-24

申请号：US10682046

申请日：2003-10-08

Applicant: Edward G. Tiedemann, Jr. ,  Daisuke Terasawa ,  Sandip Sarkar

Inventor： Edward G. Tiedemann, Jr. ,  Daisuke Terasawa ,  Sandip Sarkar

IPC: H04Q7/00 ,  H04Q7/20 ,  H04B7/216

CPC classification number: H04B1/7075 ,  H04B2201/70701 ,  H04W36/0083 ,  H04W36/14

Abstract: An improved method for facilitating handoff between an asynchronous and a synchronous base station. A method for determining a pilot channel PN offset of a pilot channel transmitted by a wireless base station. In a first embodiment, the method includes correlating a PN sequence with a received pilot signal to acquire a PN frame timing, receiving at least one search code burst aligned with the PN frame timing, the at least one search code burst signifying the pilot channel PN offset, and comparing the at least one search code burst to a set of codewords, each codeword representing a predetermined PN offset. From the search code bursts, the mobile station is able to quickly determine the PN offset of the transmitting base station, and thereby identify it. Methods for transmitting a complementary set of forward link channels are also disclosed.

Abstract translation: 一种用于促进异步和同步基站之间切换的改进方法。 一种用于确定由无线基站发送的导频信道的导频信道PN偏移的方法。 在第一实施例中，该方法包括将PN序列与接收到的导频信号相关联以获取PN帧定时，接收与PN帧定时对准的至少一个搜索码突发，表示导频信道PN的至少一个搜索码突发 偏移，并且将所述至少一个搜索码突发与一组码字进行比较，每个码字表示预定的PN偏移。 从搜索码突发中，移动站能够快速地确定发射基站的PN偏移，从而识别它。 还公开了用于发送互补的一组前向链路信道的方法。

公开(公告)号：US20080132190A1

公开(公告)日：2008-06-05

申请号：US11607438

申请日：2006-12-01

Applicant: Hongwei Kong ,  Nelson Sollenberger ,  Li Fung Chang ,  Zoran Kostic ,  Mark Hahm

Inventor： Hongwei Kong ,  Nelson Sollenberger ,  Li Fung Chang ,  Zoran Kostic ,  Mark Hahm

IPC: H04B1/10

CPC classification number: H04B1/7115 ,  H04B1/7117 ,  H04B2201/70701

Abstract: Certain aspects of a method and system for delay matching in a rake receiver are disclosed. Aspects of one method may include compensating for a delay associated with at least one or both of the following in a rake receiver: a control channel and a data channel, prior to individual processing of received data by the data channel and individual processing of received data by the control channel. The data channel or the dedicated physical channel (DPCH) may be delayed with respect to the control channel, which may comprise, for example, the common pilot control channel (CPICH), by a particular time period.

Abstract translation: 公开了用于耙式接收机中的延迟匹配的方法和系统的某些方面。 一种方法的方面可以包括在耙式接收机中补偿与以下中的至少一个或两者相关联的延迟：控制信道和数据信道，在数据信道对接收到的数据进行单独处理之前，以及接收数据的单独处理 由控制通道。 数据信道或专用物理信道（DPCH）可以相对于可以包括例如公共导频控制信道（CPICH）的控制信道延迟特定时间段。