公开(公告)号：US08537782B2

公开(公告)日：2013-09-17

申请号：US13597921

申请日：2012-08-29

申请人： Jianglei Ma ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Mo-Han Fong ,  Hang Zhang

发明人： Jianglei Ma ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Mo-Han Fong ,  Hang Zhang

IPC分类号： H04W36/00

CPC分类号： H04W36/18 ,  H04B7/022 ,  H04B7/0691

摘要： Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols are divided and allocated into subchannels. The OFDM symbols are divided and multiplexed. A soft handoff zone with a first dimension of the subchannels and a second dimension of the divided and multiplexed OFDM symbols is defined. The soft handoff zone has subcarriers with a subchannel definition, for example, an identical permutation.

公开(公告)号：US08462871B2

公开(公告)日：2013-06-11

申请号：US13545116

申请日：2012-07-10

申请人： Wen Tong ,  Ming Jia ,  Jianglei Ma ,  Peiying Zhu

发明人： Wen Tong ,  Ming Jia ,  Jianglei Ma ,  Peiying Zhu

IPC分类号： H04L1/02

CPC分类号： H04L1/0643 ,  H04L1/1867

摘要： A method and system are provided for minimizing errors by retransmitting packets in a multiple-input-multiple-output (MIMO) space-time coded packet radio. A packet is transmitted using a first STC code mapping, the mapping including well-known symbol operations, and optional signal weighting. When transmission errors are detected the packet is re-transmitted using STC code mappings selected in turn from a deterministic sequence of STC code mappings. The STC code mappings are chosen in accordance with one or more principles.

摘要翻译： 提供了一种用于通过在多输入多输出（MIMO）空时编码分组无线电中重传分组来最小化错误的方法和系统。 使用第一STC码映射来发送分组，该映射包括公知的符号操作和可选的信号加权。 当检测到传输错误时，使用从确定性序列的STC码映射依次选择的STC码映射来重新发送分组。 根据一个或多个原则选择STC代码映射。

公开(公告)号：US08416881B1

公开(公告)日：2013-04-09

申请号：US12409128

申请日：2009-03-23

申请人： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

发明人： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04K1/02 ,  H04K1/10 ,  H04L27/00 ,  H04L27/28 ,  H04B15/00

CPC分类号： H04L1/206

摘要： A method for determining an effective signal-to-interference-plus-noise ratio (ESINR) associated with transmission of modulation symbols at a plurality of different modulation orders. A signal-to-interference-plus-noise ratio bit factor (SBF) is determined for each of Q number of bits per symbol associated with a first modulation order based on a signal-to-interference-plus-noise ratio (SNR) associated with a base symbol associated with a base modulation order. A SBF is determined for each of P number of bits per symbol associated with a second modulation order based on the SNR associated with the base symbol. The first modulation order is different from the second modulation order. An ESINR of a first modulation symbol associated with the first modulation order and a second modulation symbol associated with the second modulation order is determined.

摘要翻译： 一种用于确定与多个不同调制阶数下的调制符号传输相关联的有效信号与干扰加噪声比（ESINR）的方法。 基于相关联的信噪比加噪声比（SNR），针对与第一调制阶数相关联的每个码元的Q个比特中的每一个确定信号与干扰加噪声比比特因子（SBF） 具有与基本调制阶数相关联的基本符号。 基于与基本符号相关联的SNR，为与第二调制阶数相关联的每个符号的P个比特中的每一个确定SBF。 第一调制阶数与第二调制阶数不同。 确定与第一调制阶数相关联的第一调制符号和与第二调制阶数相关联的第二调制符号的ESINR。

公开(公告)号：US08400976B2

公开(公告)日：2013-03-19

申请号：US13093419

申请日：2011-04-25

申请人： Hung Zhang ,  Jianglei Ma ,  Ming Jia ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

发明人： Hung Zhang ,  Jianglei Ma ,  Ming Jia ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04W4/00

CPC分类号： H04W72/0406 ,  H04B7/0413 ,  H04L1/1887 ,  H04L5/023 ,  H04L12/185 ,  H04L27/2627 ,  H04L61/2069 ,  H04W4/08 ,  H04W48/10 ,  H04W72/005 ,  H04W72/04 ,  H04W74/004 ,  H04W74/006 ,  Y02D30/30

摘要： A method and system for allocating shareable wireless transmission resources. A resource pool is established. The resource pool is divided into a plurality of physical layer allocation units usable for wirelessly transmitting control information and traffic data. The allocation units are assigned at the media access control layer for the wireless transmission of the control information and traffic data. The system and method of the present invention also allows mobile stations to be dynamically grouped into multicast groupings to reduce system overhead resource requirements.

摘要翻译： 一种用于分配可共享无线传输资源的方法和系统。 建立资源池。 资源池被划分为可用于无线发送控制信息和业务数据的多个物理层分配单元。 分配单元被分配在媒体接入控制层，用于无线传输控制信息和业务数据。 本发明的系统和方法还允许移动台被动态分组成多播分组以减少系统开销资源需求。

公开(公告)号：US20130028150A1

公开(公告)日：2013-01-31

申请号：US13620746

申请日：2012-09-15

申请人： Jianglei Ma ,  Mo-Han Fong ,  Hang Zhang ,  Jun Li ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

发明人： Jianglei Ma ,  Mo-Han Fong ,  Hang Zhang ,  Jun Li ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04W88/06 ,  H04W72/04

CPC分类号： H04W76/15 ,  H04J11/0069 ,  H04L1/0643 ,  H04L27/2626 ,  H04L27/34 ,  H04W28/18 ,  H04W48/18 ,  H04W88/06 ,  H04W88/10 ,  H04W88/18

摘要： A wireless communication method and system are provided. A first wireless communication numerology, e.g., OFDM operating parameters, corresponding to a first operational mode is established. A second wireless communication numerology corresponding to a second operational mode is also established. The first wireless communication numerology is different than the second wireless communication numerology. One of the first operational mode and the second operational mode is selected. One of the first wireless communication numerology and the second wireless communication numerology corresponding to the selected operational mode is used in which communication in the first operational mode and the second operational mode use substantially similar synchronization channels. The present invention also uses the same superframe structure for the first and second operational modes for Ultra-Mobile Broadband (“UMB”) networks and the same frame structure for the first and second operational modes for Long Term Evolution (“LTE”) networks.

摘要翻译： 提供了一种无线通信方法和系统。 建立对应于第一操作模式的第一无线通信命令，例如OFDM操作参数。 还建立了对应于第二操作模式的第二无线通信命理。 第一种无线通信命理与第二种无线通信命理不同。 选择第一操作模式和第二操作模式之一。 使用与所选择的操作模式相对应的第一无线通信命令和第二无线通信命令之一，其中在第一操作模式和第二操作模式中的通信使用基本相似的同步信道。 本发明还针对超移动宽带（UMB）网络的第一和第二操作模式使用相同的超帧结构，以及用于长期演进（LTE）网络的第一和第二操作模式的相同帧结构。

公开(公告)号：US08363739B2

公开(公告)日：2013-01-29

申请号：US12088589

申请日：2006-09-29

申请人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

发明人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

IPC分类号： H04K1/00

CPC分类号： H04B7/0452 ,  H04B7/0413 ,  H04J13/18 ,  H04J2013/165 ,  H04L1/0625 ,  H04L5/001 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/044 ,  H04W88/08

摘要： The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

公开(公告)号：US20130016693A1

公开(公告)日：2013-01-17

申请号：US13617175

申请日：2012-09-14

申请人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

发明人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04W72/04

CPC分类号： H04L27/2613 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0684 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0234 ,  H04L25/0244 ,  H04L27/2602 ,  H04L27/2627 ,  H04W52/42

摘要： Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

摘要翻译： 提供了使用用于数据符号和/或导频符号的跳频图案在OFDM（正交频分复用）传输资源中插入数据符号和导频符号的方法和装置。 数据符号和导频符号以二维时频模式分配给下行链路（基站到移动台）和上行链路（移动台到基站）传输资源。 对于MIMO-OFDM（多输入多输出OFDM）通信系统的每个天线，导频符号以时间 - 频率的散射图案插入，并且数据符号以与其它信号的时间频率相同的跳频图案插入 天线。

公开(公告)号：US08331465B2

公开(公告)日：2012-12-11

申请号：US12064566

申请日：2006-08-22

申请人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Dong-Sheng Yu ,  Hang Zhang

发明人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Dong-Sheng Yu ,  Hang Zhang

IPC分类号： H04K1/10

CPC分类号： H04L27/2611 ,  H04B7/06 ,  H04B7/08 ,  H04L5/0007 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2626 ,  H04L27/2647

摘要： A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).

摘要翻译： 一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。 导频符号通常在时间和频率上间隔开。 将导频符号插入的频率和时间的集合称为导频模式。 在一些情况下，导频图案是对角线形格子，规则的或不规则的。 该方法首先在较大相干性（时间或频率）的方向内插。 使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。 因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。

公开(公告)号：US20120307930A1

公开(公告)日：2012-12-06

申请号：US13586660

申请日：2012-08-15

申请人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

发明人： Jianglei Ma ,  Ming Jia ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04B7/04

CPC分类号： H04L27/2613 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0684 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0234 ,  H04L25/0244 ,  H04L27/2602 ,  H04L27/2627 ,  H04W52/42

摘要： A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.

摘要翻译： 提供了一种用于减少MIMO-OFDM通信系统内的导频符号的数量并改善这种系统内的信道估计的方法和装置。 对于OFDM发射机中的每个发射天线，导频符号被编码为对于发射天线是唯一的。 然后将编码的导频符号插入到OFDM帧中以形成菱形晶格，使用相同频率的不同发射天线的菱形晶格，但是在时域中通过单个符号彼此偏移。 在OFDM接收机处，使用二维插值来估计针对钻石晶格的每个菱形的中心的符号的信道响应。 估计的信道响应在频域中被平滑化。 然后通过在频域中的内插来估计剩余符号的信道响应。

公开(公告)号：US08300570B2

公开(公告)日：2012-10-30

申请号：US12299259

申请日：2007-06-01

申请人： Hang Zhang ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

发明人： Hang Zhang ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04B7/14

CPC分类号： H04B7/15542 ,  H04W88/04 ,  H04W92/10

摘要： One embodiment of the present invention provides a unique ranging technique in wireless communication environments that employ relay stations associated with a base station. Each relay station, and optionally the base station itself, can be allocated a unique ranging region having unique ranging resources that may be used by a mobile station to initiate a ranging function with the corresponding relay station or base station.

摘要翻译： 本发明的一个实施例提供了采用与基站相关联的中继站的无线通信环境中的唯一测距技术。 每个中继站以及可选的基站本身都可以被分配唯一的测距区域，该测距区域具有唯一的测距资源，该测距资源可以由移动台用于与对应的中继站或基站发起测距功能。