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81. 发明申请

US20080268844A1 Handoffs and Handoff Selection in a Wireless Access Network 有权
标题翻译：无线接入网络中的切换和切换选择
公开(公告)号：US20080268844A1
公开(公告)日：2008-10-30
申请号：US11570028
申请日：2005-06-03
申请人： Jianglei Ma , Peiying Zhu , Wen Tong , Hang Zhang , Mo-Han Fong
发明人： Jianglei Ma , Peiying Zhu , Wen Tong , Hang Zhang , Mo-Han Fong
IPC分类号： H04Q7/20
CPC分类号： H04W36/0033 , H04W36/18 , H04W36/30
摘要： The present invention facilitates handoffs for a mobile terminal in a wireless access network that is capable of supporting different types of handoffs. The different handoff types may include soft handoffs and fast base station switching (FBSS). In operation, context information associated with supporting wireless communications between the wireless access network and the mobile terminal are determined. Based on whether the context information is shared between base stations involved in the handoff or transferred from one base station to another of the base station involved in the handoff, a particular handoff type is selected from the different handoff types that are available. Selecting the specific type of handoff to use may also be based on the level of context information that is available, the actual content of the context information, application preferences, channel conditions, base station or mobile terminal capabilities, or any combination thereof.
摘要翻译：本发明有助于能够支持不同类型的切换的无线接入网络中的移动终端的切换。不同的切换类型可以包括软切换和快速基站切换（FBSS）。在操作中，确定与支持无线接入网络和移动终端之间的无线通信相关联的上下文信息。基于上下文信息是否在切换中涉及的基站或从一个基站传送到切换中涉及的基站的另一基站之间共享，从可用的不同切换类型中选择特定切换类型。选择要使用的特定类型的切换还可以基于可用的上下文信息的级别，上下文信息的实际内容，应用偏好，信道条件，基站或移动终端能力，或其任何组合。

82. 发明申请

US20080247479A1 Pilot Scheme For A Mimo Communication System 有权
标题翻译： Mimo通信系统试点计划
公开(公告)号：US20080247479A1
公开(公告)日：2008-10-09
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： H04L27/28
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.
摘要翻译：本发明采用诸如单载波FDM通信系统的频分多址（FDM）通信系统的导频方案。给定的传输时间间隔将包括许多业务符号和两个或更多个短导频符号，它们彼此间隔开至少一个业务符号，并且将具有小于任何给定业务的傅里叶变换长度的傅里叶变换长度符号。多个发射机将产生导频信息，并以正交方式将导频信息调制到短导频符号的子载波上。每个发射机可以在时间和频域内使用不同的子载波，由发射时间间隔内的短导频符号包围。或者，每个发射机可以使用唯一的码分多路复用码对导频信息进行唯一的编码，并将编码的导频信息调制到短导频符号的公共子载波上。

83. 发明申请

US20080187136A1 Systems and Methods for Use with Orthogonal Frequency Division Multiplexing 有权
标题翻译：用于正交频分复用的系统和方法
公开(公告)号：US20080187136A1
公开(公告)日：2008-08-07
申请号：US11666882
申请日：2005-10-13
申请人： Hang Zhang , Mo-Han Fong , Peiying Zhu , Wen Tong
发明人： Hang Zhang , Mo-Han Fong , Peiying Zhu , Wen Tong
IPC分类号： H04L9/08 , H04L27/28 , H04L1/18 , H04K1/00
CPC分类号： H04L5/0055 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0067 , H04L1/0071 , H04L1/0643 , H04L1/1671 , H04L1/1812 , H04L1/1819 , H04L1/1822 , H04L1/1861 , H04L1/1887 , H04L1/189 , H04L1/1896 , H04L9/0891 , H04L9/30 , H04L27/2601 , H04L27/2602 , H04L2209/80 , H04W12/02 , H04W12/04
摘要： Systems and methods are provided for enabling H-ARQ communication between a base station and one or more wireless terminals. Methods for enabling incremental redundancy (IR) based H-ARQ, Chase based H-ARQ and Space-Time Code combining (STC) based H-ARQ between devices for down-link and up-link direction transmissions are provided in the form of an information element (IE) for use with a Normal MAP convention as currently accepted in the draft version standard of IEEE 802.16. In addition, embodiments of the invention provide a resource management scheme to protect a network from abuse of resources from a wireless terminal not registered with the network. Components of the down-link and up-link mapping components of a data frame transmitted from the base station to one or more wireless terminals included messages that are readable by all wireless terminals as well as some messages that are encrypted and only readable by wireless terminals that are authenticated as being registered with the network.
摘要翻译：提供了用于使基站与一个或多个无线终端之间进行H-ARQ通信的系统和方法。在下行链路和上行链路方向传输的设备之间使用基于H-ARQ，基于Chase的H-ARQ和基于空时码合并（STC）的H-ARQ的方法可以以信息元素（IE），用于IEEE 802.16草案版本标准中当前接受的普通MAP约定。此外，本发明的实施例提供了一种资源管理方案，用于保护网络免受来自未向网络注册的无线终端的资源的滥用。从基站发送到一个或多个无线终端的数据帧的下行链路和上行链路映射组件的组件包括可由所有无线终端读取的消息以及被加密且仅由无线终端可读的一些消息被认证为在网络上注册。

84. 发明申请

US20080089223A1 System and method for embedding OFDM in CDMA systems 有权
公开(公告)号：US20080089223A1
公开(公告)日：2008-04-17
申请号：US12000162
申请日：2007-12-10
申请人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith Edwards
发明人： Shiquan Wu , Wen Tong , Peiying Zhu , Ming Jia , Hua Xu , Daniel Boudreau , Jianming Wu , Mo-Han Fong , Keith Edwards
IPC分类号： H04J11/00
CPC分类号： H04B1/707 , H04B2201/70701 , H04L5/026
摘要： Systems and methods of combining OFDM and CDMA signals are provided. An OFDM packet data channel is overlaid over CDMA transmissions. The channel is scheduled slotwise between multiple users. In some embodiments, there is a CDMA packet data channel which is scheduled together with the OFDM packet data channel.

85. 发明申请

US20080069031A1 Methods and Systems for Enabling Feedback in Wireless Communication Networks 有权
标题翻译：在无线通信网络中实现反馈的方法和系统
公开(公告)号：US20080069031A1
公开(公告)日：2008-03-20
申请号：US11630385
申请日：2005-06-22
申请人： Hang Zhang , Mo-Han Fong , Peiying Zhu , Jianglei Ma , Wen Tong
发明人： Hang Zhang , Mo-Han Fong , Peiying Zhu , Jianglei Ma , Wen Tong
IPC分类号： H04B1/00 , H04B7/02 , H04Q7/00
CPC分类号： H04B7/0478 , H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/0671 , H04B7/0673 , H04B7/0691 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/005 , H04L5/006 , H04L5/023 , H04L27/2601 , H04W48/08 , H04W72/042 , H04W72/044 , H04W72/08 , H04W74/06
摘要： Aspects of the present invention provide additional MAC functionality to support the PHY features of a wireless communication system framework. The additional MAC functionality aids in enabling feedback from wireless terminals to base stations. In some aspects of the invention the feedback is provided on an allocated feedback channel. In other aspects of the invention the feedback is provided by MAC protocol data units (PDU) in a header, mini-header, or subheader. The feedback may be transmitted from the wireless terminal to the base station autonomously by the wireless terminal or in response to an indication from the base station that feedback is requested. Aspects of the invention also provide for allocating feedback resources to form a dedicated feedback channel. One or more of these enhancements is included in a given implementation. Base stations and wireless terminals are also described upon which methods described herein can be implemented.
摘要翻译：本发明的方面提供了附加的MAC功能来支持无线通信系统框架的PHY特征。附加的MAC功能有助于实现从无线终端到基站的反馈。在本发明的一些方面，在分配的反馈信道上提供反馈。在本发明的其它方面，反馈由报头，小标题或子报头中的MAC协议数据单元（PDU）提供。反馈可以由无线终端自主地从无线终端发送到基站，或者响应于来自基站的指示，请求反馈。本发明的各方面还提供分配反馈资源以形成专用反馈信道。这些增强中的一个或多个包括在给定的实现中。还描述了基站和无线终端，其中可以实现本文描述的方法。

86. 发明申请

US20080002568A1 Adaptive time diversity and spatial diversity for OFDM 有权
公开(公告)号：US20080002568A1
公开(公告)日：2008-01-03
申请号：US11899860
申请日：2007-09-07
申请人： Shiquan Wu , Wen Tong , Leo Strawczynski
发明人： Shiquan Wu , Wen Tong , Leo Strawczynski
IPC分类号： H04J11/00
CPC分类号： H04B7/068 , H04B7/0417 , H04B7/063 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04B7/0891 , H04L1/0001 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0026 , H04L1/0625 , H04L1/0631 , H04L1/0662 , H04L1/0675 , H04L5/0007 , H04L5/0023 , H04L5/0025 , H04L5/0026 , H04L5/0046 , H04L5/006 , H04L27/0008 , H04L27/2604 , H04L27/2628 , H04L27/2646 , H04L27/2647
摘要： An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.

87. 发明申请

US20070274408A1 Preamble design for multiple input - multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system 有权
标题翻译：用于多输入多输出（MIMO），正交频分复用（OFDM）系统的前导码设计
公开(公告)号：US20070274408A1
公开(公告)日：2007-11-29
申请号：US11798342
申请日：2007-05-14
申请人： Jianglei Ma , Wen Tong , Shiquan Wu
发明人： Jianglei Ma , Wen Tong , Shiquan Wu
IPC分类号： H04K1/10
CPC分类号： H04B7/0619 , H04B7/0413 , H04B7/0669 , H04B7/0684 , H04B7/0691 , H04B7/0697 , H04B7/0845 , H04B7/0874 , H04B7/0894 , H04L1/0618 , H04L5/0023 , H04L5/0026 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/0226 , H04L27/2605 , H04L27/2613 , H04L27/2657 , H04L27/2662
摘要： One or more preambles are inserted into frames of Orthogonal Frequency Multiplexing (OFDM)-Multiple Input, Multiple Output (MIMO) signals. The preamble is received by the antennas of a receiver, decoded and compared to known values to provide synchronization, framing, channels estimation, offsets and other corrections to the transmitted signal.
摘要翻译：将一个或多个前导码插入到正交频分复用（OFDM） - 多输入多输出（MIMO）信号的帧中。前导码由接收机的天线接收，被解码并与已知值进行比较，以向发送的信号提供同步，成帧，信道估计，偏移和其他校正。

88. 发明授权

US07260077B2 Adaptive scheduling for multi-carrier systems 有权
标题翻译：多载波系统的自适应调度
公开(公告)号：US07260077B2
公开(公告)日：2007-08-21
申请号：US10172626
申请日：2002-06-14
申请人： Jianming Wu , Wen Tong
发明人： Jianming Wu , Wen Tong
IPC分类号： H04B7/212 , H04L12/66
CPC分类号： H04W72/1252 , H04W72/1257
摘要： A scheduler in a base station determines or estimates a cumulative throughput based on the scheduling criteria used by the base station. Based on the cumulative throughput for each slot, the mobile terminals are divided into one of two groups. The first group is provided for mobile terminals having a lower throughput, while the remaining mobile terminals are placed in a second group associated with higher throughput. The mobile terminal in the first group having the lowest throughput has data scheduled for transmission on the next slot over the best available carrier. The remaining mobile terminals in the first group are iteratively scheduled for transmission on the best remaining carriers, until no mobile terminals remain. Once scheduling for the first group is complete, scheduling for the second group can take place. Preferably, scheduling for the second group is performed to maximize throughput on the remaining carrier or carriers.
摘要翻译：基站中的调度器基于基站使用的调度准则来确定或估计累积吞吐量。基于每个时隙的累积吞吐量，移动终端被分成两组之一。第一组被提供用于具有较低吞吐量的移动终端，而剩余的移动终端被放置在与较高吞吐量相关联的第二组中。具有最低吞吐量的第一组中的移动终端具有调度用于在最佳可用载波上的下一个时隙上传输的数据。第一组中的剩余移动终端被迭代地调度用于在最佳剩余载波上传输，直到不存在移动终端。一旦第一组的调度完成，则可以进行第二组的调度。优选地，执行第二组的调度以最大化剩余的载波或载波上的吞吐量。

89. 发明申请

US20070183527A1 Space-time transmit diversity systems and methods for ofdm applications 有权
标题翻译：时空发射分集系统和方法应用于ddm
公开(公告)号：US20070183527A1
公开(公告)日：2007-08-09
申请号：US11547073
申请日：2005-04-04
申请人： Ming Jia , Wen Tong , Jianglei Ma , Peiying Zhu , Doug-Sheng Yu
发明人： Ming Jia , Wen Tong , Jianglei Ma , Peiying Zhu , Doug-Sheng Yu
IPC分类号： H04L1/02
CPC分类号： H04B7/0691 , H04B7/0669 , H04B7/0689 , H04B7/0891 , H04L1/0069 , H04L1/0643 , H04L1/0662 , H04L1/0668 , H04L27/2602 , H04L27/2626 , H04L27/2647
摘要： Embodiments of the invention provide orthogonal Frequency Division Multiplexing-Space-time Block Codes (OFDMSTBC) mappings for code rate 1, 2 and 4 codes for 4 Transmit Antennas. To overcome the innate weakness of known codes, a new class of STBC codes is provided which is particularly suited for OFDM applications, although other applications are also contemplated. Codes for STBC mappings in the time direction, the frequency direction and a combined time frequency mapping for multiple antennas are provided. In OFDM applications, these codes exploit the properties of OFDM and FEC codes to substantially maintain the advantages of Alamouti codes. Furthermore, while the detailed examples given herein focus on four antenna applications, they can be easily extended to systems with more than four antennas.
摘要翻译：本发明的实施例为4个发射天线的码率1,2和4码提供正交频分复用 - 空时块码（OFDMSTBC）映射。为了克服已知代码的固有缺点，提供了一类新的STBC代码，其特别适用于OFDM应用，尽管也考虑了其他应用。提供了在时间方向上的STBC映射代码，频率方向和多个天线的组合时间频率映射。在OFDM应用中，这些代码利用OFDM和FEC码的性质来基本上保持Alamouti码的优点。此外，虽然本文给出的详细示例集中在四个天线应用，但是它们可以容易地扩展到具有多于四个天线的系统。

90. 发明授权

US07248559B2 Scattered pilot pattern and channel estimation method for MIMO-OFDM systems 有权
标题翻译： MIMO-OFDM系统的分散导频模式和信道估计方法
公开(公告)号：US07248559B2
公开(公告)日：2007-07-24
申请号：US10038883
申请日：2002-01-08
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： H04J11/00 , H04Q7/00 , H04B7/216 , H04B7/02 , H04L27/00
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： 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。

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