公开(公告)号：US20140341136A1

公开(公告)日：2014-11-20

申请号：US14284282

申请日：2014-05-21

Applicant: Broadcom Corporation

Inventor： Uri M. LANDAU ,  Francis SWARTS ,  Mark KENT

IPC: H04W74/08 ,  H04W40/04

CPC classification number: H04W74/0808 ,  H04B1/70735 ,  H04B1/7083 ,  H04W40/04

Abstract: Aspects of a method and apparatus for user equipment (UE) channel acquisition in the presence of large frequency uncertainty in wideband code division multiple access (WCDMA) signals are provided. An efficient time-frequency domain search that may be utilized in cell communications may be performed by devising criteria that eliminates the unlikely frequencies hypotheses. An estimate for the frequency offset may be estimated in the remaining subset. For WCDMA applications, a UE may comprise a baseband processor that is enabled to detect a primary synchronization channel (P-SCH) code (PSC) for initial network synchronization. A portion of the baseband processor may generate a plurality of signal peak-to-noise-floor-average ratios associated with a plurality of test frequencies produced by a crystal oscillator. A highest of the signal peak-to-noise-floor-average ratios may be selected to determine the frequency offset of the crystal oscillator for use in power up operations.

Abstract translation: 提供了在存在宽带码分多址（WCDMA）信号中的大频率不确定性的情况下用户设备（UE）信道采集的方法和装置的方面。 可以在小区通信中使用的有效的时频域搜索可以通过设计消除不太可能的频率假设的标准来执行。 可以在剩余子集中估计频率偏移的估计。 对于WCDMA应用，UE可以包括基带处理器，其能够检测用于初始网络同步的主同步信道（P-SCH）码（PSC）。 基带处理器的一部分可以产生与由晶体振荡器产生的多个测试频率相关联的多个信号峰均噪声平均值平均比。 可以选择最高的信号峰均噪声平均比，以确定用于加电操作的晶体振荡器的频率偏移。

公开(公告)号：US20130279637A1

公开(公告)日：2013-10-24

申请号：US13920947

申请日：2013-06-18

Applicant: Broadcom Corporation

Inventor： Mark KENT

IPC: H04L7/00

CPC classification number: H04L27/2662 ,  H04L7/0054 ,  H04L27/2663 ,  H04L27/2665 ,  H04L27/2666 ,  H04L27/2675

Abstract: Aspects of a method and system for a reference signal (RS) timing loop for OFDM symbol synchronization and tracking may include tracking symbol timing in an Orthogonal Frequency Division Multiplexing (OFDM) signal based on at least a reference symbol set. A receiver timing may be adjusted based on at least the symbol timing. The symbol timing may be tracked by generating an output signal as a function of a guard time Δtg in a phase discrimination feedback loop. The reference symbol (RS) set may be generated in an RS extraction module or circuit, from at least a fast Fourier transform of the received OFDM signal. The receiver timing may be coarsely adjusted and then finely adjusted. The coarse receiver timing adjustment may be based on processing at least a primary synchronization signal and a secondary synchronization signal.

Abstract translation: 用于OFDM符号同步和跟踪的参考信号（RS）定时环路的方法和系统的方面可以包括基于至少参考符号集的正交频分复用（OFDM）信号中的跟踪符号定时。 可以至少基于符号定时来调整接收机定时。 可以通过在相位鉴别反馈回路中产生作为保护时间Deltatg的函数的输出信号来跟踪符号定时。 参考符号（RS）集合可以在RS提取模块或电路中从接收到的OFDM信号的至少快速傅里叶变换产生。 接收机定时可以粗调，然后精细调整。 粗略的接收机定时调整可以基于至少处理主同步信号和次同步信号。

公开(公告)号：US20130316702A1

公开(公告)日：2013-11-28

申请号：US13893309

申请日：2013-05-13

Applicant: Broadcom Corporation

Inventor： Wael William DIAB ,  Charles ABRAHAM ,  Xuemin Sherman CHEN ,  Vinko ERCEG ,  Victor T. HOU ,  Jeyhan KARAOGUZ ,  Mark KENT

IPC: H04W40/02 ,  H04L29/06

CPC classification number: H04W40/02 ,  H04L29/06176 ,  H04L49/90 ,  H04W28/14 ,  H04W28/26 ,  H04W84/045

Abstract: Aspects of a method and system for timely delivery of multimedia content via a femtocell are provided. In this regard, a femtocell may receive data via an upstream path and transmit data via a downstream path. One of the upstream path and downstream path may comprise a cellular path and the other may comprise a non-cellular path. One or both of the upstream path and the downstream path may be audio video bridging (AVB) paths. Data may be stored in the femtocell based on timing characteristics of one or both of the upstream path and the downstream path. Data may be delivered to the femtocell utilizing best effort delivery and the data may be forwarded by the femtocell with guaranteed quality of service. Resources in the femtocell may be reserved and/or synchronized, utilizing AVB protocols, for communication of one or more data streams.

Abstract translation: 提供了通过毫微微小区及时传送多媒体内容的方法和系统的方面。 在这方面，毫微微小区可以经由上游路径接收数据，并经由下行路径发送数据。 上游路径和下游路径之一可以包括蜂窝路径，另一个可以包括非蜂窝路径。 上游路径和下游路径中的一个或两个可以是音频视频桥接（AVB）路径。 可以基于上游路径和下游路径中的一个或两个的定时特性将数据存储在毫微微小区中。 数据可以使用尽力传递来传送到毫微微小区，并且数据可以由具有保证的服务质量的毫微微小区转发。 可以使用AVB协议来保留和/或同步毫微微小区中的资源，以用于一个或多个数据流的通信。

公开(公告)号：US20150341888A1

公开(公告)日：2015-11-26

申请号：US14701148

申请日：2015-04-30

Applicant: Broadcom Corporation

Inventor： Mark KENT ,  Charles Abraham ,  Xuemin William Chen ,  Wael William Diab ,  Vinko Erceg ,  Victor Hou ,  Jeyhan Karaoguz

IPC: H04W60/04 ,  H04W48/20 ,  H04W4/02

CPC classification number: H04W60/04 ,  H04W48/20 ,  H04W84/045

Abstract: Aspects of a method and system for registering femtocells to provide service are provided. In this regard, a communication device may be operable to determine a plurality of femtocells within a vicinity of its location. The communication device may be operable to receive information communicated from one or more of the plurality of femtocells, which are managed by a femtocell management entity. One or more of the plurality of femtocells may be selected for transmitting and/or receiving cellular data based on the communicated information. The communicated information may comprise one or more of global navigation system satellite (GNSS) coordinates, an identification number, potential interference, power levels, location, associated communication devices, and/or directionality of antennas of the one or more femtocells.

Abstract translation: 提供了用于注册毫微微小区来提供服务的方法和系统的方面。 在这方面，通信设备可以用于确定其位置附近的多个毫微微小区。 通信设备可以用于接收由毫微微小区管理实体管理的多个毫微微小区中的一个或多个传送的信息。 可以基于所传送的信息来选择多个毫微微小区中的一个或多个用于发送和/或接收蜂窝数据。 传送的信息可以包括一个或多个毫微微小区的全球导航系统卫星（GNSS）坐标，识别号码，潜在干扰，功率电平，位置，相关联的通信设备和/或天线的方向性中的一个或多个。

公开(公告)号：US20130177050A1

公开(公告)日：2013-07-11

申请号：US13784340

申请日：2013-03-04

Applicant: Broadcom Corporation

Inventor： Mark KENT ,  Vinko Erceg ,  Uri Landau ,  Pieter Van Rooyen

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/0842

Abstract: Methods and systems for processing signals in a receiver are disclosed herein and may comprise receiving spatially multiplexed signals via M receive antennas. A plurality of multiple data streams may be separated in the received spatially multiplexed signals to detect MIMO data streams. Each of the MIMO data streams may correspond to a spatially multiplexed input signal. Complex phase and/or amplitude may be estimated for each detected MIMO data streams utilizing (M-1) phase shifters. Complex waveforms, comprising in-phase (I) and quadrature (Q) components for the MIMO data streams within the received spatially multiplexed signals may be processed and the processed complex waveforms may be filtered to generate baseband bandwidth limited signals. Phase and/or amplitude for one or more received spatially multiplexed signals may be adjusted utilizing the estimated complex phase and amplitude. Phase and/or amplitude may be adjusted continuously and/or at discrete intervals.

Abstract translation: 在本文中公开了用于处理接收机中的信号的方法和系统，并且可以包括通过M个接收天线接收空间复用的信号。 多个多个数据流可以在接收的空间复用信号中分离以检测MIMO数据流。 每个MIMO数据流可以对应于空间复用的输入信号。 可以使用（M-1）移相器针对每个检测到的MIMO数据流来估计复相和/或振幅。 可以对接收的空间复用信号内的MIMO数据流的同相（I）和正交（Q）分量的复杂波形进行处理，并且处理的复杂波形可被滤波以产生基带带宽限制信号。 可以使用估计的复相位和幅度来调整一个或多个接收的空间复用信号的相位和/或幅度。 相位和/或幅度可以连续和/或以离散间隔进行调整。

公开(公告)号：US20130128945A1

公开(公告)日：2013-05-23

申请号：US13732047

申请日：2012-12-31

Applicant: Broadcom Corporation

Inventor： Mark KENT ,  Uri LANDAU ,  Severine CATREUX-ERCEG ,  Vinko ERCEG ,  Ning KONG ,  Pieter ROUX

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H04L25/03038 ,  H04L2025/03426 ,  H04L2025/03471 ,  H04L2025/03617 ,  H04L2025/03662 ,  H04L2025/037

Abstract: Methods and systems for processing signals in a receiver are disclosed herein and may include updating a plurality of filter taps utilizing at least one channel response vector and at least one correlation vector, for a plurality of received clusters, based on initialized values related to the at least one channel response vector and the at least one correlation vector. At least a portion of the received signal clusters may be filtered utilizing at least a portion of the updated plurality of filter taps. The update may be repeated whenever a specified signal-to-noise ratio (SNR) for the received signal clusters is reached. The initialized values may be updated during a plurality of iterations, and the update may be repeated whenever a specified number of the plurality of iterations is reached.

Abstract translation: 本文公开了一种用于在接收机中处理信号的方法和系统，并且可以包括利用至少一个信道响应向量和至少一个相关向量来更新多个滤波器抽头，对于多个接收到的簇，基于与该at 至少一个信道响应向量和所述至少一个相关向量。 可以利用更新的多个滤波器抽头的至少一部分来对接收信号簇的至少一部分进行滤波。 只要达到接收信号簇的指定信噪比（SNR），就可以重新进行更新。 可以在多次迭代期间更新初始化值，并且可以在达到多次迭代的指定次数时重新进行更新。

公开(公告)号：US20140023162A1

公开(公告)日：2014-01-23

申请号：US14035713

申请日：2013-09-24

Applicant: Broadcom Corporation

Inventor： Mark KENT

IPC: H04L27/26

CPC classification number: H04L27/265 ,  H04L27/2649 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675

Abstract: Aspects of a method and system for an OFDM joint timing and frequency tracking system may include tracking carrier frequency and symbol timing in an Orthogonal Frequency Division Multiplexing (OFDM) signal based on at least a reference symbol set. A receiver frequency and timing may be adjusted based on the tracked carrier frequency and symbol timing. The carrier frequency may be tracked by generating an output signal as a function of a frequency offset Δf, and the symbol timing may be tracked by generating an output signal as a function of a guard time Δtg The received OFDM signal may be fast Fourier transformed to generate the reference symbol (RS) set. The receiver frequency and timing may be adjusted coarsely prior to fine adjustment. The coarse receiver frequency and the timing adjustment may be based on processing a primary synchronization signal and a secondary synchronization signal.

Abstract translation: 用于OFDM联合定时和频率跟踪系统的方法和系统的方面可以包括基于至少参考符号集在正交频分复用（OFDM）信号中跟踪载波频率和符号定时。 可以基于跟踪的载波频率和符号定时来调整接收机频率和定时。 可以通过产生作为频率偏移Deltaf的函数的输出信号来跟踪载波频率，并且可以通过生成作为保护时间的函数的输出信号来跟踪符号定时Deltatg。接收的OFDM信号可以被快速傅里叶变换为 生成参考符号（RS）集合。 接收机频率和定时可以在微调之前进行粗调。 粗略的接收机频率和定时调整可以基于处理主同步信号和次同步信号。

公开(公告)号：US20130223557A1

公开(公告)日：2013-08-29

申请号：US13859582

申请日：2013-04-09

Applicant: Broadcom Corporation

Inventor： Mark KENT ,  Vinko Erceg ,  Uri M. Landau ,  Pieter Van Rooyen ,  Pieter Roux

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B7/0697 ,  H04L1/0656 ,  H04L25/0204 ,  H04L25/0214 ,  H04L25/0244 ,  H04L25/025 ,  H04L25/03019 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03726 ,  H04L2025/03808

Abstract: Certain aspects of the method may comprise receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of spatially multiplexed communication signals. A plurality of pre-equalization weights may be generated based on the generated plurality of vectors of baseband combined channel estimates. The received plurality of spatially multiplexed communication signals may be modified based on the generated plurality of pre-equalization weights. At least a portion of the generated plurality of pre-equalization weights may be fed back to the base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of the plurality of transmit antennas at the base station.

Abstract translation: 该方法的某些方面可以包括在基站处从多个发射天线接收多个空间复用的通信信号。 可以基于所接收的多个空间复用通信信号的相位旋转来生成基带组合信道估计的多个向量。 可以基于所生成的多个基带组合信道估计向量来生成多个预均衡权重。 可以基于所生成的多个预均衡权重来修改所接收的多个空间复用的通信信号。 所生成的多个预均衡权重中的至少一部分可以反馈给基站，以便修改在基站处从多个发射天线的至少一部分发送的随后发送的空间复用的通信信号。

公开(公告)号：US20140192932A1

公开(公告)日：2014-07-10

申请号：US14096667

申请日：2013-12-04

Applicant: Broadcom Corporation

Inventor： Mark KENT ,  Vinko ERCEG ,  Uri M. LANDAU ,  Peter VAN ROOYEN ,  Peter ROUX

IPC: H04B7/04

CPC classification number: H04B7/0413 ,  H04B7/0697 ,  H04B7/0857

Abstract: Certain aspects of the method may comprise generating at least one control signal that may be utilized to control at least a first of a plurality of received spatially multiplexed communication signals. An amplitude and/or phase of the first received spatially multiplexed communication signal may be adjusted via the generated control signal so that the amplitude and/or phase of the first received spatially multiplexed communication signal may be equivalent to an amplitude and/or phase of a second received spatially multiplexed communication signal. The amplitude of the first received spatially multiplexed communication signal is adjusted within the processing path used to process the first received spatially multiplexed communication signal.

Abstract translation: 该方法的某些方面可以包括生成至少一个控制信号，该至少一个控制信号可被用于控制多个接收的空间复用通信信号中的至少第一个。 可以经由所生成的控制信号来调整第一接收的空间多路复用通信信号的振幅和/或相位，使得第一接收空间复用的通信信号的振幅和/或相位可以等于 第二接收的空间复用通信信号。 在用于处理第一个接收到的空间复用的通信信号的处理路径内调整第一个接收的空间多路复用的通信信号的振幅。

公开(公告)号：US20140071963A1

公开(公告)日：2014-03-13

申请号：US14076573

申请日：2013-11-11

Applicant: Broadcom Corporation

Inventor： Francis SWARTS ,  Mark KENT

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04L27/2655 ,  H04L27/2662 ,  H04L27/2671 ,  H04L27/2675

Abstract: A mobile device receives a signal, from a base station, comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device utilizes two different sampling rates to perform the PSS synchronization and the SSS detection individually. For example, the mobile device synchronizes to the received PSS at a first sampling rate such as 0.96 MHz, which is determined based on the PSS transmission rate and/or the length of the received PSS. The mobile device detects the received SSS at a second sampling rate such as 1.92 MHz, which equals to the sampling rate for an analog-to-digital conversion at the mobile device. The received PSS and associated symbol timing are detected through the PSS synchronization to support the SSS detection. The detected SSS is used to acquire cell-specific parameters such as cell ID. The acquired cell-specific parameters ensure proper communications between the mobile device and the base station.

Abstract translation: 移动设备从基站接收包括主同步序列（PSS）和辅同步序列（SSS）的信号。 移动设备利用两种不同的采样率来分别执行PSS同步和SSS检测。 例如，移动设备以基于PSS传输速率和/或所接收的PSS的长度确定的第一采样率（例如0.96MHz）与所接收的PSS同步。 移动设备以诸如1.92MHz的第二采样率来检测接收的SSS，其等于在移动设备处的模数转换的采样率。 通过PSS同步检测接收的PSS和相关的符号定时，以支持SSS检测。 检测到的SSS用于获取诸如小区ID的小区特定参数。 所获取的小区特定参数确保移动设备和基站之间的正确通信。