公开(公告)号：US20140364117A1

公开(公告)日：2014-12-11

申请号：US14469205

申请日：2014-08-26

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Tao Luo

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04B2201/70701 ,  H04J11/0069 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0048 ,  H04W48/08 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/25

Abstract: Systems and methodologies are described that facilitate efficient cell acquisition in a wireless communication system. In one aspect, a reference signal for use in cell acquisition can be constructed in a bandwidth-agnostic manner such that it contains a common central portion in a predetermined frequency band that is independent of a bandwidth utilized by an associated wireless communication system. The central portion can be constructed as a two-dimensional block in time and frequency that spans a default cell search bandwidth, a predetermined bandwidth specified by synchronization codes or other signals, or another suitable bandwidth. A reference signal can then be constructed form the central portion by tiling or expanding the central portion such that it spans the entire system bandwidth.

Abstract translation: 描述了在无线通信系统中促进有效的小区获取的系统和方法。 在一个方面，用于小区获取的参考信号可以以带宽不相关的方式构成，使得它包含与相关无线通信系统所利用的带宽无关的预定频带中的公共中心部分。 中心部分可以被构造为跨越默认小区搜索带宽，由同步码或其他信号指定的预定带宽或另一适当带宽的时间和频率的二维块。 然后可以通过平铺或扩展中心部分从而使中心部分跨越整个系统带宽来构建参考信号。

公开(公告)号：US09480006B2

公开(公告)日：2016-10-25

申请号：US14159390

申请日：2014-01-20

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Tao Luo

IPC: H04J3/06 ,  H04W48/16 ,  H04J11/00 ,  H04L27/26

CPC classification number: H04W48/16 ,  H04J11/0069 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675

Abstract: Systems and methodologies are described that facilitate searches for a cell in a wireless communication environment. A mobile device can employ a searcher that can detect timing information respectively associated with PSCs and cells to determine the cell with the highest correlation. The searcher can detect SSCs, which can include detecting associated phase information, to determine the SSC with the highest correlation, CP length, and/or other information to facilitate identifying a desired cell having the strongest signal to establish communication between the mobile device and the desired cell. PSCs respectively associated with cells can have different positions in the symbol sequences, and SSCs can respectively be phase shifted at different angles to facilitate detection and identification of a cell(s), where a PSC can be utilized as a phase reference by the associated SSC.

Abstract translation: 描述了便于在无线通信环境中搜索小区的系统和方法。 移动设备可以使用搜索器，其可以检测分别与PSC和小区相关联的定时信息，以确定具有最高相关性的小区。 搜索器可以检测SSC，其可以包括检测相关联的相位信息，以确定具有最高相关性，CP长度和/或其他信息的SSC，以便于识别具有最强信号的期望小区，以建立移动设备与 想要的细胞。 分别与单元相关联的PSC可以在符号序列中具有不同的位置，并且SSC可以分别以不同的角度相移以促进单元的检测和识别，其中PSC可以被相关联的SSC用作相位参考 。

公开(公告)号：US09131464B2

公开(公告)日：2015-09-08

申请号：US14085675

申请日：2013-11-20

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Sandip Sarkar

IPC: H04W68/02

CPC classification number: H04W68/02 ,  H04W68/025

Abstract: Systems and methods for utilizing paging group IDs and paging indicators are disclosed for PDCCH and PDSCH transmissions to mobile terminals in a mobile communication system. By use of the paging group IDs and paging indicators, various groups of mobile terminals, including subsets of those groups can be paged with reduced decoding requirements. Nesting of the grouping is exploited and packing of the PDCCH frame to accomplish efficient use is described.

Abstract translation: 公开了用于移动通信系统中用于移动终端的PDCCH和PDSCH传输的用于使用寻呼组ID和寻呼指示符的系统和方法。 通过使用寻呼组ID和寻呼指示符，可以以降低的解码要求对包括这些组的子集的各种移动终端进行寻呼。 描述了分组的嵌套和PDCCH帧的打包以实现有效的使用。

公开(公告)号：US20140205036A1

公开(公告)日：2014-07-24

申请号：US14221122

申请日：2014-03-20

Applicant: QUALCOMM Incorporated

Inventor： Byoung-Hoon Kim

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B7/04 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/0656 ,  H04L1/0675

Abstract: Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.

Abstract translation: 通过减少为在下行链路MIMO信道上调整数据速率而提供信道性能反馈所需的上行链路资源的量来改善MIMO无线通信系统的性能的系统和方法。 在一个实施例中，一种方法包括根据对应的数据速率对一组数据流中的每一个进行编码，根据组合的全部置换来置换一组MIMO信道上的数据流，发送置换的数据流，接收置换的数据流 解码和确定每个数据流的SNR，计算所述数据流集合的精简SNR度量，提供所述精简度量作为反馈，基于所述精简SNR度量确定所述数据流的各个SNR度量的集合， 以及基于各个SNR度量来调整数据流被编码的数据速率。

公开(公告)号：US20140079036A1

公开(公告)日：2014-03-20

申请号：US14085675

申请日：2013-11-20

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Sandip Sarkar

IPC: H04W68/02

CPC classification number: H04W68/02 ,  H04W68/025

Abstract: Systems and methods for utilizing paging group IDs and paging indicators are disclosed for PDCCH and PDSCH transmissions to mobile terminals in a mobile communication system. By use of the paging group IDs and paging indicators, various groups of mobile terminals, including subsets of those groups can be paged with reduced decoding requirements. Nesting of the grouping is exploited and packing of the PDCCH frame to accomplish efficient use is described.

Abstract translation: 公开了用于移动通信系统中用于移动终端的PDCCH和PDSCH传输的用于使用寻呼组ID和寻呼指示符的系统和方法。 通过使用寻呼组ID和寻呼指示符，可以以降低的解码要求对包括这些组的子集的各种移动终端进行寻呼。 描述了分组的嵌套和PDCCH帧的打包以实现有效的使用。

公开(公告)号：US20130259013A1

公开(公告)日：2013-10-03

申请号：US13900727

申请日：2013-05-23

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Tao Luo

IPC: H04W56/00

CPC classification number: H04W56/00

Abstract: Techniques for facilitating cell search by user equipments (UEs) in a wireless communication system are described. In an aspect, a primary synchronization code (PSC) sequence may be generated based on a Frank sequence and a constant amplitude sequence that is repeated multiple times. In another aspect, a set of PSC sequences may be generated based on complementary sequences having good aperiodic correlation properties and efficient implementations. In one design, PSC sequences A+B and B+A may be formed based on Golay complementary sequences A and B, there “+” denotes concatenation. In yet another aspect, a set of secondary synchronization code (SSC) sequences may be generated based on a set of base sequences and different modulation symbols of a modulation scheme. Each base sequence may be modulated by each of M possible modulation symbols for the modulation scheme to obtain M different SSC sequences.

Abstract translation: 描述了用于在无线通信系统中用于用户设备（UE）的小区搜索的技术。 在一方面，可以基于Frank序列和重复多次的恒定幅度序列来生成主同步码（PSC）序列。 在另一方面，可以基于具有良好的非周期相关性质和有效实现的互补序列来生成一组PSC序列。 在一种设计中，可以基于Golay互补序列A和B形成PSC序列A + B和B + A，“+”表示连接。 在另一方面，可以基于一组基本序列和调制方案的不同调制符号来生成一组次同步码（SSC）序列。 每个基本序列可以由用于调制方案的M个可能调制符号中的每一个调制以获得M个不同的SSC序列。