Method and apparatus for initial acquisition and cell search for an OFDMA system
    21.
    发明授权
    Method and apparatus for initial acquisition and cell search for an OFDMA system 有权
    用于OFDMA系统的初始采集和小区搜索的方法和装置

    公开(公告)号:US07983143B2

    公开(公告)日:2011-07-19

    申请号:US11351306

    申请日:2006-02-08

    IPC分类号: H04J11/00

    摘要: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816) and including information for providing at least partial cell identification information (812). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译: 提供了一种用于发送包括在OFDMA信号(818)的带宽的局部部分内发送的同步信道信号的正交频域多址(OFDMA)信号的方法和装置,所述同步信道信号具有在 带宽的局部部分(816)并且包括用于提供至少部分小区识别信息的信息(812)。 同步信道信号支持在支持多个系统带宽的OFDMA系统中提供OFDMA符号定时检测和频率误差检测(1112)和帧边界检测和小区特定信息检测(1114)的具有低计算负荷的初始采集和小区搜索方法, 同步和非同步的系统,大的信元索引和具有短和长循环前缀长度的OFDMA符号结构。

    APPARATUS AND METHOD FOR COMMUNICATING AND PROCESSING A REFERENCE SIGNAL BASED ON AN IDENTIFIER ASSOCIATED WITH A BASE STATION
    22.
    发明申请
    APPARATUS AND METHOD FOR COMMUNICATING AND PROCESSING A REFERENCE SIGNAL BASED ON AN IDENTIFIER ASSOCIATED WITH A BASE STATION 有权
    基于与基站相关的识别器的参考信号的通信和处理的装置和方法

    公开(公告)号:US20110149903A1

    公开(公告)日:2011-06-23

    申请号:US13040090

    申请日:2011-03-03

    IPC分类号: H04W72/04 H04W4/00

    摘要: A base station, which includes a processor and a transmitter, communicates a reference signal to wireless communication devices in a wireless communication system. The processor encodes the reference signal into a first set of transmission resources, encodes other information into a second set of transmission resources, and multiplexes the two sets of transmission resources into a subframe, such that the first set of transmission resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of transmission resources is multiplexed into a second set of OFDM symbols. The transmitter transmits the subframe to the wireless devices. According to one embodiment, transmission resources for carrying the reference signal may be allocated according to a predetermined allocation, a semi-static allocation, a dynamic allocation, and/or an allocation based on higher layer signaling.

    摘要翻译: 包括处理器和发射机的基站将参考信号传送到无线通信系统中的无线通信设备。 处理器将参考信号编码为第一组传输资源,将其他信息编码为第二组传输资源,并将两组传输资源复用为子帧,使得第一组传输资源至少多路复用 基于与基站和第二组传输资源相关联的标识符的第一组正交频分复用(OFDM)符号的一部分被多路复用到第二组OFDM符号中。 发射机将子帧发送到无线设备。 根据一个实施例,可以根据预定分配,半静态分配,动态分配和/或基于较高层信令的分配来分配用于承载参考信号的传输资源。

    APPARATUS AND METHOD FOR COMMUNICATING AND PROCESSING A REFERENCE SIGNAL BASED ON AN IDENTIFIER ASSOCIATED WITH A BASE STATION
    23.
    发明申请
    APPARATUS AND METHOD FOR COMMUNICATING AND PROCESSING A REFERENCE SIGNAL BASED ON AN IDENTIFIER ASSOCIATED WITH A BASE STATION 有权
    基于与基站相关的识别器的参考信号的通信和处理的装置和方法

    公开(公告)号:US20110149868A1

    公开(公告)日:2011-06-23

    申请号:US13040109

    申请日:2011-03-03

    IPC分类号: H04W40/00

    摘要: A wireless communication device receives at least a section of a subframe from a base station in a wireless communication system. The subframe includes transmission resources multiplexed onto subcarriers of orthogonal frequency division multiplexed (OFDM) symbols. A first set of OFDM symbols includes a reference signal and at least a second set of OFDM symbols includes information other than the reference signal (e.g., channel-coded data). The wireless device determines which OFDM symbols of the subframe constitute the first set of OFDM symbols based on an identifier associated with a base station that transmitted the subframe. The wireless device may then process the reference signal from the OFDM symbols that are determined to be the first set of OFDM symbols. The wireless device may also determine which OFDM symbols of the subframe constitute the second set of OFDM symbols and process non-reference signal information from OFDM symbols of the second set.

    摘要翻译: 无线通信设备从无线通信系统中的基站接收子帧的至少一部分。 子帧包括复用到正交频分复用(OFDM)符号的子载波上的传输资源。 第一组OFDM符号包括参考信号,并且至少第二组OFDM符号包括除参考信号之外的信息(例如,信道编码数据)。 无线设备基于与发送子帧的基站相关联的标识符来确定子帧的哪些OFDM符号构成第一组OFDM符号。 无线设备然后可以处理来自被确定为第一组OFDM符号的OFDM符号的参考信号。 无线设备还可以确定子帧的哪些OFDM符号构成第二组OFDM符号,并且从第二组的OFDM符号处理非参考信号信息。

    Interference Control, SINR Optimization and Signaling Enhancements to Improve the Performance of OTDOA Measurements
    25.
    发明申请
    Interference Control, SINR Optimization and Signaling Enhancements to Improve the Performance of OTDOA Measurements 有权
    干扰控制,SINR优化和信令增强,以提高OTDOA测量的性能

    公开(公告)号:US20100317343A1

    公开(公告)日:2010-12-16

    申请号:US12813221

    申请日:2010-06-10

    IPC分类号: H04W4/00

    摘要: A wireless terminal receives signaling information, pertaining to a reference signal transmission in at least one specifically designated sub frame, the signaling information including a list, the list including base station identities. The terminal determines, from at least one of the base station identities in the list, the time-frequency resources associated with a reference signal transmission intended for observed time difference of arrival (OTDOA) measurements from a transmitting base station associated with said one base station identity. The time of arrival of a transmission from the transmitting base station, relative to reference timing, is measured. The wireless terminal can receive a command from a serving cell to start performing inter-frequency OTDOA measurement on a frequency layer containing reference signals, the frequency layer distinct from the serving frequency layer, the serving frequency layer not containing positioning reference signals. The wireless terminal can perform OTDOA measurements subsequent to the reception of the command on a carrier frequency different from the serving cell carrier frequency. A base station transmitter can jointly schedule a reference signal transmission from a plurality of base station transmitters for the purpose of OTD estimation enhancement, and transmit identical reference signals from the plurality of base station transmitters, the reference signals being identical both in the signal sequence and time-frequency resources used for transmission.

    摘要翻译: 无线终端接收属于至少一个具体指定的子帧中的参考信号传输的信令信息,所述信令信息包括列表,所述列表包括基站标识。 终端从列表中的至少一个基站标识确定与来自与所述一个基站相关联的发射基站的观测到达时间差(OTDOA)测量的参考信号传输相关联的时间 - 频率资源 身份 来自发射基站的传输相对于参考定时的到达时间被测量。 无线终端可以接收来自服务小区的命令,以在包含参考信号的频率层(不同于服务频率层的频率层,不包含定位参考信号的服务频率层)开始执行频率间OTDOA测量。 无线终端可以在与服务小区载波频率不同的载波频率上接收到该命令之后执行OTDOA测量。 为了OTD估计增强的目的,基站发射机可以共同安排来自多个基站发射机的参考信号传输,并且从多个基站发射机发送相同的参考信号,参考信号在信号序列和 用于传输的时频资源。

    PHICH Resource Signaling in a Wireless Communication System
    28.
    发明申请
    PHICH Resource Signaling in a Wireless Communication System 有权
    无线通信系统中的PHICH资源信令

    公开(公告)号:US20100246455A1

    公开(公告)日:2010-09-30

    申请号:US12410449

    申请日:2009-03-24

    IPC分类号: H04J3/00 H04W4/00 H04J1/00

    摘要: A wireless communication terminal and method for determining a number of Physical Hybrid ARQ Indicator Channel (PHICH) groups (N) in the downlink subframe based on a first parameter, a second parameter and a determined cyclic prefix (CP) duration, wherein the first parameter indicates a downlink system bandwidth in terms of a number of resource blocks and the second parameter indicates a scaling factor. The terminal receives downlink control signaling in a set of resource elements in the subframe, wherein the set of resource elements is determined based partly on the number of PHICH groups (N).

    摘要翻译: 一种用于基于第一参数,第二参数和确定的循环前缀(CP)持续时间来确定下行链路子帧中的物理混合ARQ指示符信道(NICH)组的数量的无线通信终端和方法,其中所述第一参数 以资源块的数量表示下行链路系统带宽,第二参数表示缩放因子。 终端在子帧中的一组资源元素中接收下行链路控制信令,其中基于PHICH组(N)的数量来确定资源元素集合。

    Method and apparatus for power reduction for E-TFC selection
    30.
    发明授权
    Method and apparatus for power reduction for E-TFC selection 有权
    用于E-TFC选择功率降低的方法和装置

    公开(公告)号:US07729715B2

    公开(公告)日:2010-06-01

    申请号:US11323190

    申请日:2005-12-30

    IPC分类号: H04B7/00

    CPC分类号: H04W52/52

    摘要: A method for data rate selection of a data transmission on a wide band code division multiple access (WCDMA) radio frequency (RF) channel in a portable communication device (100) is provided. The portable communication device (100) has transmitter circuitry (108) which includes a power amplifier (250). The method includes the steps of determining a power backoff requirement for the power amplifier (250) for a data transmission on a WCDMA channel (320) and selecting a transport format combination (TFC) for the data transmission in response to the power backoff requirement (324).

    摘要翻译: 提供了一种用于在便携式通信设备(100)中的宽带码分多址(WCDMA)射频(RF)频道上的数据传输的数据速率选择的方法。 便携式通信设备(100)具有包括功率放大器(250)的发射机电路(108)。 该方法包括以下步骤:确定用于在WCDMA信道(320)上的数据传输的功率放大器(250)的功率回退要求,并响应于功率回退要求选择用于数据传输的传输格式组合(TFC) 324)。