公开(公告)号：US07813261B2

公开(公告)日：2010-10-12

申请号：US11887115

申请日：2006-03-30

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

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

IPC分类号： H04J11/00 ,  H04J3/26 ,  H04H20/71 ,  H04L23/02

CPC分类号： H04L27/2602 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2655

摘要： In some embodiments of the present invention there is provided a frame structure for transmitting an integer number of OFDM symbols in which some of the OFDM symbols are to be transmitted in a unicast format and some of the OFDM symbols are to be transmitted in a broadcast format. The frame structure includes partitioning of a frame into at least two portions to accommodate both unicast and broadcast modes in the frame. The frame structure is used for transmitting multiple frames in a serial manner from at least one transmitter. The unicast mode supports transmission of OFDM symbols from a single transmitter to a single receiver. The broadcast mode supports transmission of OFDM symbols from multiple transmitters to all receivers within range of the multiple transmitters. The multicast mode supports transmission of OFDM symbols from multiple transmitters to multiple receivers within range of the multiple transmitters.

摘要翻译： 在本发明的一些实施例中，提供了一种用于发送整数个OFDM符号的帧结构，其中一些OFDM符号将以单播格式发送，并且一些OFDM符号将以广播格式发送 。 帧结构包括将帧划分成至少两个部分以适应帧中的单播和广播模式。 帧结构用于从至少一个发射机以串行方式发送多个帧。 单播模式支持将OFDM符号从单个发射机传输到单个接收机。 广播模式支持从多个发射机向多个发射机的范围内的所有接收机传输OFDM符号。 组播模式支持将多个发射机的OFDM符号从多个发射机的范围内传输到多个接收机。

公开(公告)号：US20090003466A1

公开(公告)日：2009-01-01

申请号：US11631842

申请日：2005-07-07

申请人： Mahmoud Taherzadehboroujeni ,  Hossein Nikopurdeilami ,  Amir Khandani ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu ,  Jianglei Ma

发明人： Mahmoud Taherzadehboroujeni ,  Hossein Nikopurdeilami ,  Amir Khandani ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu ,  Jianglei Ma

IPC分类号： H04K1/10

CPC分类号： H04B7/0669 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0668 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0028 ,  H04L27/2626

摘要： Methods and devices are provided for MIMO OFDM transmitter and receivers having odd and/even numbers of transmit antennas. Various methods for pre-coding information bits before space time coding (STC) are described for enabling transmission of information bits over all antennas. Methods of decoding received signals that have been pre-coded and STC coded are also provided by embodiments of the invention. Pilot patterns for downlink and uplink transmission between a base station and one or more wireless terminals for three transmit antenna transmitters are also provided. Variable rate codes are provided that combine various fixed rate codes in a manner that results in codes whose rates are dependent on all the various fixed rate codes that are combined.

摘要翻译： 为具有奇数和偶数个发射天线的MIMO OFDM发射机和接收机提供了方法和设备。 描述了用于在空间时间编码（STC）之前预编码信息比特的各种方法，以使得能够在所有天线上传输信息比特。 对已经被预编码和STC编码的接收信号进行解码的方法也由本发明的实施例提供。 还提供了用于三个发射天线发射机的基站与一个或多个无线终端之间的下行链路和上行链路传输的导频模式。 提供了可变速率代码，其以导致其速率取决于组合的所有各种固定速率代码的代码的方式组合各种固定速率代码。

公开(公告)号：US20080253279A1

公开(公告)日：2008-10-16

申请号：US10593053

申请日：2005-03-15

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

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

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L27/261 ,  H04B7/06 ,  H04B7/0615 ,  H04B7/0684 ,  H04L5/0026 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0234

摘要： Pilot, preamble and midamble patterns are provided that are particularly suited for four transmit antenna OFDM systems. Pilots are inserted in a scattered manner for each of the four antennas, either uncoded, space-time coded in pairs, space-time frequency coded in pairs, or space-time-frequency coded.

摘要翻译： 提供了特别适用于四个发射天线OFDM系统的导频，前导码和中置码模式。 飞行员以四个天线中的每一个以分散的方式插入，无论是未编码，成对空时编码，成对进行时空频率编码，还是进行时空编码。

公开(公告)号：US20080232504A1

公开(公告)日：2008-09-25

申请号：US12064563

申请日：2006-08-23

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

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

IPC分类号： H04B7/02

CPC分类号： H04L5/0051 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0618 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L25/02 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2647 ,  H04W52/325

摘要： Aspects of the invention include methods and devices for inserting data and pilot symbols into Orthogonal Frequency Division Multiplexing (OFDM) frames having a time domain and a frequency domain. A method involves inserting in at least one zone of a first type a two dimensional array of data and pilot symbols in time and frequency and inserting in at least one zone of a second type a two dimensional array of data and pilot symbols in time and frequency. In some implementations the zone of the first type comprises common pilot symbols that can be detected by all receivers receiving the OFDM frame. In some implementations the zone of the second type comprises dedicated pilot symbols that are only detectable by a receiver that is aware of pre-processing used to encode the dedicated pilot symbols. According to various embodiments of the invention, the zones of the first and second types can be partitioned in the OFDM frame based on time division multiplexing (TDM), frequency division multiplexing (FDM) or combined TDM/FDM. Examples of types of transmissions that could be transmitted in different zones of a single OFDM frame are OFDM multiple input multiple output (MIMO) transmissions and OFDM beam forming transmissions.

摘要翻译： 本发明的方面包括用于将数据和导频符号插入具有时域和频域的正交频分复用（OFDM）帧的方法和装置。 一种方法包括在时间和频率上插入数据和导频符号的二维阵列的第一类型的至少一个区域，并在第二类型的至少一个区域中插入时间和频率的数据和导频符号的二维阵列 。 在一些实现中，第一类型的区域包括可由接收OFDM帧的所有接收机检测的公共导频符号。 在一些实施方式中，第二类型的区域包括专用导频符号，其仅可以被知道用于对专用导频符号进行编码的预处理的接收机检测。 根据本发明的各种实施例，可以基于时分复用（TDM），频分复用（FDM）或组合TDM / FDM，在OFDM帧中划分第一类和第二类的区。 可以在单个OFDM帧的不同区域中传输的传输类型的示例是OFDM多输入多输出（MIMO）传输和OFDM波束形成传输。

公开(公告)号：US20080151743A1

公开(公告)日：2008-06-26

申请号：US11816370

申请日：2006-02-15

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

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

IPC分类号： H04J11/00

CPC分类号： H04W88/06 ,  H04B1/707 ,  H04J11/0093 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0087 ,  H04L25/0204 ,  H04L25/0226 ,  H04W28/10 ,  H04W88/10

摘要： A method and system for wireless data communication using a first wireless communication technology and a second wireless communication technology. The second wireless communication technology being different from the first wireless communication technology. A transmitter is arranged to transmit data using frame structures based on the first wireless communication technology and the second wireless communication technology in which the frame structure based on the second wireless communication technology has a timing structure, MAC and pilot that are also used with the frame structure of the first wireless communication technology. The transmitter is arranged to selectively change transmission on a frame by frame basis between the first wireless communication technology and the second wireless communication technology.

摘要翻译： 一种使用第一无线通信技术和第二无线通信技术进行无线数据通信的方法和系统。 第二无线通信技术与第一无线通信技术不同。 发射机被布置为使用基于第一无线通信技术的帧结构和基于第二无线通信技术的帧结构具有定时结构的第二无线通信技术来发送数据，也与帧一起使用的MAC和导频 第一种无线通信技术的结构。 发射机被布置为在第一无线通信技术和第二无线通信技术之间逐帧地选择性地改变传输。

公开(公告)号：US20080039107A1

公开(公告)日：2008-02-14

申请号：US11630474

申请日：2005-06-23

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

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

IPC分类号： H04J11/00

CPC分类号： H04L27/2692 ,  H04B7/02 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L7/043 ,  H04L27/2613 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2686 ,  H04W24/02

摘要： The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-1 and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.

摘要翻译： 本发明提供插入到OFDMA帧中并具有参与传输的所有基站的公共序列的前同步码。 用户站使用公共前导码上的公共序列执行精细同步，并且所得到的峰值将提供候选基站的位置。 然后通过使用基站专用伪噪声序列，在那些峰附近执行基站专用搜索。 通过这两个阶段的单元格搜索，搜索窗口大大减少。 前导码由相应的接收机与已知值匹配以对信号进行解码，并允许多个信号从发射机传送到接收机。 前导码可以包括两个部分，即前导码1和前导码2，其可以在不同的系统中使用，包括多输入，多输入（MIMO）系统。

公开(公告)号：US20070053282A1

公开(公告)日：2007-03-08

申请号：US11529246

申请日：2006-09-29

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

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

IPC分类号： H04J11/00

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：US20060182063A1

公开(公告)日：2006-08-17

申请号：US11403469

申请日：2006-04-13

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

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

IPC分类号： H04L12/56 ,  H04Q7/00 ,  H04J11/00 ,  H04L12/28

CPC分类号： H04W36/18 ,  H04B7/022 ,  H04L1/0618 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0232 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/2655

摘要： The present invention relates to soft handoffs in an OFDM system. Each mobile terminal measures pilot signal strengths of transmissions from adjacent base stations. If the pilot signal strength for a base station exceeds the defined threshold, that base station is added to an active set list. Each mobile terminal notifies the base stations of their active set lists. By providing the set list to the base station controller and the servicing base station, the mobile terminal identifies the sole servicing base station or triggers a soft handoff mode when multiple base stations appear on the active set list. The soft handoff mode uses a combination of scheduling and space-time coding to affect efficient and reliable handoffs.

公开(公告)号：US11621768B2

公开(公告)日：2023-04-04

申请号：US16864922

申请日：2020-05-01

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： H04B7/185 ,  H04W36/00

摘要： The present disclosure relates, in part, to non-terrestrial communication systems, and in some embodiments to the integration of terrestrial and non-terrestrial communication systems. Non-terrestrial communication systems can provide a more flexible communication system with extended wireless coverage range and enhanced service quality compared to conventional communication systems.

公开(公告)号：US09867200B2

公开(公告)日：2018-01-09

申请号：US13619359

申请日：2012-09-14

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

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

IPC分类号： H04L12/28 ,  H04W72/06 ,  H04B7/26 ,  H04L5/00 ,  H04L27/26 ,  H04L25/02 ,  H04L25/03 ,  H04W16/26 ,  H04W52/34 ,  H04W84/04

CPC分类号： H04W72/06 ,  H04B7/2606 ,  H04B7/2615 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2655 ,  H04W16/26 ,  H04W52/34 ,  H04W84/047

摘要： Methods and systems are provided for use with wireless networks having one or more cell in which each cell includes a base station (BS), at least one relay station (RS) and at least one mobile station (MS). The at least one relay station can be used as an intermediate station for providing communication between the BS and MS. Methods are provided for an RS to initially access the network, access of the RS by MSs initially accessing the network, methods of allocating OFDM resources for communicating between the BS, RS and/or MS for example dividing transmission resources into uplink and downlink transmissions, and methods of inserting pilot symbols into transmission resources used by the RS. In some embodiments on the invention, the methods are consistent and/or can be used in conjunction with existing standards such as 802.16e.