公开(公告)号：US20030142732A1

公开(公告)日：2003-07-31

申请号：US10056983

申请日：2002-01-25

Inventor： Shimon Moshavi ,  Daniel Yellin ,  Yoni Perets ,  Tsofnat Hagin-Metzer

IPC: H04K001/00

CPC classification number: H04B1/707 ,  H04B1/7085 ,  H04B1/7117 ,  H04B7/022 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: A receiver includes a searcher to identify pilot signals within a received signal and a pilot tracking unit to continuously track pilot signals identified by the searcher. The pilot signals tracked by the pilot tracking unit may include pilot signals associated with an affiliated base station as well as pilot signals associated with non-affiliated base stations. In at least one embodiment, the pilot tracking unit continuously tracks most or all of the pilot signals identified by the searcher.

Abstract translation: 接收机包括用于识别接收信号内的导频信号的搜索器和导频跟踪单元，以连续跟踪由搜索器识别的导频信号。 由导频跟踪单元跟踪的导频信号可以包括与附属基站相关联的导频信号以及与非附属基站相关联的导频信号。 在至少一个实施例中，导频跟踪单元连续跟踪由搜索者识别的导频信号的大部分或全部。

公开(公告)号：US20030086405A1

公开(公告)日：2003-05-08

申请号：US09896564

申请日：2001-06-29

Inventor： Juan J. Silva ,  Mauricio Guerra ,  Reza Shahidi

IPC: H04B007/216

CPC classification number: H04W52/343 ,  H04B2201/70702 ,  H04L41/145 ,  H04W16/18 ,  H04W16/22 ,  H04W28/22 ,  H04W52/146 ,  H04W52/26 ,  H04W76/10 ,  H04W88/08

Abstract: A wireless network planning tool simulates wireless network operation, including subscriber admission processing, based on sophisticated reverse and forward link analyses that include data fall back procedures. Subscribers are associated with an application type, where each application type preferably has maximum and minimum data rates and one or more fall back rates. During simulation, the tool may use fall back when evaluating forward and reverse communication links between subscribers and their associated sectors (base stations). A subscriber unable to close a reverse link to a given sector at a given data rate, may be re-evaluated at a lower rate under fallback procedures. Forward link analysis incorporates similar fallback procedures in forward link call admission. Fallback procedures include appropriate supplemental channel adjustments, and corresponding forward and reverse link power adjustments reflecting adjusted data rates. Forward and reverse link fallback procedures are independent and allow for different data rates for each link.

Abstract translation: 无线网络规划工具基于包括数据回退过程的复杂的反向和前向链路分析，模拟无线网络操作，包括用户准入处理。 订户与应用类型相关联，其中每个应用类型优选地具有最大和最小数据速率以及一个或多个回退速率。 在仿真期间，当评估用户及其相关部门（基站）之间的正向和反向通信链路时，该工具可能会使用倒退。 不能以给定数据速率关闭给定扇区的反向链路的用户可以在回退过程下以较低的速率重新评估。 前向链路分析在前向链路呼叫接纳中包含类似的后备程序。 回退程序包括适当的补充通道调整，以及反映调整数据速率的相应的前向和反向链路功率调整。 前向和反向链路回退过程是独立的，并允许每个链路的不同数据速率。

公开(公告)号：US06546062B1

公开(公告)日：2003-04-08

申请号：US09337847

申请日：1999-06-21

Applicant: Yonggang Du ,  Christoph Herrmann

Inventor： Yonggang Du ,  Christoph Herrmann

IPC: H04B1022

CPC classification number: H04B7/2668 ,  H04B1/7075 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: The invention relates to a wireless network which includes at least one base station (1 to 3) and a plurality of associated terminals (4 to 14) for the exchange of useful data and control data. According to the invention, the base station (1 to 3) is arranged to transmit the starting instant of a signaling sequence to at least one terminal (4 to 14). In order to evaluate the signaling sequences transmitted by the terminals, the base station (1 to 3) includes a device (21, 22) for correlating a received signaling sequence and for detecting the pulse arising from a received and correlated signaling sequence.

Abstract translation: 本发明涉及一种无线网络，其包括用于交换有用数据和控制数据的至少一个基站（1至3）和多个关联终端（4至14）。 根据本发明，基站（1至3）被布置为将信令序列的起始时刻发送到至少一个终端（4至14）。 为了评估由终端发送的信令序列，基站（1至3）包括用于使接收到的信令序列相关并用于检测从接收和相关的信令序列产生的脉冲的装置（21,22）。

公开(公告)号：US20030063583A1

公开(公告)日：2003-04-03

申请号：US08963386

申请日：1997-11-03

Inventor： ROBERTO PADOVANI ,  PAUL E. BENDER ,  PETER J. BLACK ,  MATTEW S. GROB ,  JURG K. HINDERLING ,  NAGABHUSHANA T. SINDHUSHAYANA ,  CHARLES E. WHEATLEY III

IPC: H04Q007/00

CPC classification number: H04W28/22 ,  H04B1/7103 ,  H04B2201/70702 ,  H04B2201/709709 ,  H04L1/08 ,  H04L1/1628 ,  H04W16/14 ,  H04W24/00 ,  H04W52/04 ,  H04W52/12 ,  H04W52/241 ,  H04W52/248 ,  H04W52/26 ,  H04W52/40

Abstract: In a data communication system capable of variable rate transmission, high rate packet data transmission improves utilization of the forward link and decreases the transmission delay. Data transmission on the forward link is time multiplexed and the base station transmits at the highest data rate supported by the forward link at each time slot to one mobile station. The data rate is determined by the largest C/I measurement of the forward link signals as measured at the mobile station. Upon determination of a data packet received in error, the mobile station transmits a NACK message back to the base station. The NACK message results in retransmission of the data packet received in error. The data packets can be transmitted out of sequence by the use of sequence number to identify each data unit within the data packets.

Abstract translation: 在能够进行可变速率传输的数据通信系统中，高速率分组数据传输提高了前向链路的利用率，降低了传输延迟。 前向链路上的数据传输被时分复用，基站以每个时隙的前向链路支持的最高数据速率发送到一个移动台。 数据速率由在移动台测量的前向链路信号的最大C / I测量来确定。 在确定错误地接收到的数据分组时，移动台将NACK消息发送回基站。 NACK消息导致错误地接收到的数据分组的重传。 数据分组可以通过使用序列号序列发送，以识别数据分组内的每个数据单元。

公开(公告)号：US20030050022A1

公开(公告)日：2003-03-13

申请号：US10102738

申请日：2002-03-22

Applicant: Fujitsu Limited

Inventor： Koichi Kuroiwa ,  Shoji Taniguchi ,  Masami Kanasugi ,  Junichi Sugimoto

IPC: H04B017/02

CPC classification number: H04B1/70754 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/7071

Abstract: A receiving unit that reduces the amount of power consumed for detecting the timing of each of a plurality of paths via which received signals were received. A receiving section receives signals sent from a base station and transmitted via a plurality of paths. A path detecting section detects the timing of each of the plurality of paths via which the received signals received by the receiving section were transmitted. A path detection range setting section sets a range where a path is detected by the path detecting section on the basis of information indicative of path timing detected by the path detecting section.

Abstract translation: 接收单元，其减少用于检测接收到的信号的多个路径中的每一个的定时的消耗的功率量。 接收部分接收从基站发送并经由多个路径发送的信号。 路径检测部分检测由接收部分接收的接收信号经由哪个多个路径中的每一个的定时被发送。 路径检测范围设定部根据由路径检测部检测到的路径定时的信息，设定由路径检测部检测出路径的范围。

公开(公告)号：US20030045300A1

公开(公告)日：2003-03-06

申请号：US09948373

申请日：2001-09-06

Inventor： Wen Jing New

IPC: H04Q007/20

CPC classification number: H04B1/70751 ,  H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702

Abstract: Methods and apparatus are presented for scheduling asynchronous neighboring cells within a wireless communication system. The Neighbor Set is apportioned into a Synchronated Neighbor Set and an Asynchronous Neighbor Set. Rather than performing a full frame timing acquisition search upon the Neighbor Set, only portions of the full frame timing acquisition search are selectively applied to the Asynchronous Neighbor Set. In addition, a synchronous search is performed on the Synchronated Neighbor Set.

Abstract translation: 呈现用于在无线通信系统内调度异步相邻小区的方法和装置。 邻居集被分配到同步邻居集和异步邻居集中。 不是在邻居集上执行全帧定时捕获搜索，而是仅将全帧定时捕获搜索的部分选择性地应用于异步相邻集合。 此外，对同步邻居集执行同步搜索。

公开(公告)号：US20020187748A1

公开(公告)日：2002-12-12

申请号：US10210961

申请日：2002-08-02

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04B007/185 ,  H04Q007/20

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 method of controlling transmission power during the establishment of a channel in a CDMA communication system utilizes 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 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 units and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

公开(公告)号：US06480558B1

公开(公告)日：2002-11-12

申请号：US09271074

申请日：1999-03-17

Applicant: Tony Ottosson ,  Yi-Pin Eric Wang

Inventor： Tony Ottosson ,  Yi-Pin Eric Wang

IPC: H04B110

CPC classification number: H04B1/7083 ,  H04B1/7107 ,  H04B2201/70702

Abstract: A received communications signal is correlated with a common synchronization code to produce a synchronization detection signal. A component of the synchronization detection signal associated with a known synchronization signal is canceled from the synchronization detection signal to produce an interference-canceled synchronization detection signal. Timing of a synchronization signal is determined from the interference-canceled synchronization detection signal. According to one aspect, interference cancellation is achieved by generating a correlation of an estimated received known synchronization signal with the common synchronization code, canceling the correlation of the estimated received known synchronization signal with the common synchronization code from the synchronization detection signal to produce the interference-canceled synchronization detection signal. Timing of a synchronization signal may then be determined by accumulating the interference-canceled synchronization detection signal over a time interval, detecting a peak in the accumulated interference-canceled synchronization detection signal, and determining timing of a synchronization signal from the detected peak. According to another aspect, interference cancellation is achieved by accumulating the synchronization detection signal over a time interval, identifying a peak in the accumulated synchronization detection signal not associated with a known synchronization signal, and determining timing of a synchronization signal from the identified peak. Related terminal apparatus are also discussed.

Abstract translation: 接收到的通信信号与公共同步码相关，以产生同步检测信号。 与已知的同步信号相关联的同步检测信号的分量从同步检测信号中消除，以产生干扰消除的同步检测信号。 从干扰消除的同步检测信号确定同步信号的定时。 根据一个方面，通过产生估计的接收到的已知同步信号与公共同步码的相关性来消除干扰消除，从所述同步检测信号中消除估计接收的已知同步信号与公共同步码的相关性，以产生干扰 同步检测信号。 然后可以通过在一段时间间隔内累积干扰消除的同步检测信号来确定同步信号的定时，检测累积的干扰消除同步检测信号中的峰值，以及根据检测到的峰值确定同步信号的定时。 根据另一方面，通过在时间间隔内累积同步检测信号，识别与已知同步信号不相关的累积同步检测信号中的峰值，以及根据所识别的峰值确定同步信号的定时来实现干扰消除。 还讨论了相关终端装置。

公开(公告)号：US06480522B1

公开(公告)日：2002-11-12

申请号：US09723338

申请日：2000-11-28

Applicant: Elliott Hoole ,  Mary Jesse ,  Robert G. Mechaley, Jr. ,  David James Ryan ,  David Stephenson

Inventor： Elliott Hoole ,  Mary Jesse ,  Robert G. Mechaley, Jr. ,  David James Ryan ,  David Stephenson

IPC: A61F206

CPC classification number: H04B1/69 ,  H04B1/692 ,  H04B1/707 ,  H04B1/7107 ,  H04B7/04 ,  H04B2201/70702 ,  H04L5/0021 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/026 ,  H04L25/0228 ,  H04L25/03019 ,  H04L27/186 ,  H04L27/3416 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04W16/14 ,  H04W88/08

Abstract: A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.

Abstract translation: 离散多媒体叠层载波扩频通信方法是基于频域扩展，包括基带信号乘以叠加的或叠加的复数正弦波载波的集合。 在优选实施例中，扩展涉及激励大的快速傅立叶变换（FFT）的信息仓。 这为中等输出FFT大小节省了大量的计算复杂度。 点对多点和多点到多点（无节点）网络拓扑是可能的。 通过利用各种光源的光谱多样性，可以包括一个代码归零方法用于干扰消除和增强的信号分离。 基本方法可以扩展为包括用于干扰消除的多元天线阵列归零方法和使用空间分离的增强信号分离。 这种方法允许适应或可以适应于无线电环境的指导和逆向传输系统。 这样的系统与带宽按需和高阶调制格式兼容，并且使用高级适配算法。 在具体实施例中，基于空中链路的频谱和空间描述之间的数学类比，以统一的操作来计算自适应权重的频谱和空间分量。

公开(公告)号：US20020123357A1

公开(公告)日：2002-09-05

申请号：US09955521

申请日：2001-09-12

Inventor： Farrokh Abrishamkar ,  Mark Roh

IPC: H04Q007/20

CPC classification number: H04W68/00 ,  H04B1/7075 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04W52/028 ,  H04W68/025 ,  Y02D70/40

Abstract: A system determines if a primary paging channel should be received based on an examination of a quick paging channel. A first QPCH symbol is examined (102) and the normalized pilot energy is determined (104). If the normalized pilot energy is above a first threshold (106), the symbol is demodulated and the QPCH-symbol-to-pilot-energy ratio is determined (110) and compared against another threshold (112). If the normalized pilot energy is below the first threshold, the system proceeds to the second QPCH symbol immediately. Depending on the resulting values, a second QPCH signal is examined (108), the system sleeps (114), or the system decides (116) to process the primary paging channel directly (118). If the second signal is demodulated, and if its normalized pilot energy is high enough, it also is demodulated and the ratio of the sum-of-the-combined-QPCH-symbols to the sum-of-the-combined-pilot-energies is determined (122). If this ratio exceeds a threshold (124), the primary paging channel is processed (118); otherwise the system sleeps (114).

Abstract translation: 系统基于快速寻呼信道的检查来确定是否应该接收主寻呼信道。 检查第一QPCH符号（102）并且确定归一化导频能量（104）。 如果归一化的导频能量高于第一阈值（106），则对该符号进行解调并且确定QPCH符号到导频能量比（110）并与另一阈值（112）进行比较。 如果归一化的导频能量低于第一阈值，则系统立即进入第二QPCH符号。 根据得到的值，检查第二QPCH信号（108），系统休眠（114），或者系统决定（116）直接处理主寻呼信道（118）。 如果第二信号被解调，并且如果其归一化导频能量足够高，则其也被解调，并且组合QPCH符号之和与组合导频能量之和的比率 确定（122）。 如果该比率超过阈值（124），则处理主寻呼信道（118）; 否则系统睡眠（114）。