公开(公告)号：US07961696B2

公开(公告)日：2011-06-14

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： H04B7/208

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：US07941150B2

公开(公告)日：2011-05-10

申请号：US11435486

申请日：2006-05-17

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

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

IPC分类号： H04W72/00

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：US07623487B2

公开(公告)日：2009-11-24

申请号：US11488366

申请日：2006-07-17

申请人： Hang Zhang ,  Jianglei Ma ,  Mo-han Fong ,  Peiying Zhu ,  Wen Tong

发明人： Hang Zhang ,  Jianglei Ma ,  Mo-han Fong ,  Peiying Zhu ,  Wen Tong

IPC分类号： H04W4/00

CPC分类号： H04L5/0023 ,  H04L5/0039 ,  H04L5/0048 ,  H04L5/0064 ,  H04W72/048

摘要： A method and apparatus for wireless communication in which groups of expected mobile device mobility speed ranges are established. A first sub-carrier block arrangement for the group having the lowest expected mobility speed range is determined. The first sub-carrier block arrangement is comprised of a plurality of sub-carriers. A second sub-carrier block arrangement for a group having an expected mobility speed range faster than the expected speed range of the lowest expected speed range group is determined. The second sub-carrier block arrangement is comprised of the plurality of sub-carriers. The first and second sub-carrier block arrangements are different but use the same sub-carrier spacing and symbol duration.

摘要翻译： 一种用于无线通信的方法和装置，其中建立了预期移动设备移动速度范围的组。 确定具有最低预期移动速度范围的组的第一副载波块装置。 第一子载波块装置由多个子载波组成。 确定具有比最低预期速度范围组的预期速度范围更快的预期移动速度范围的组的第二副载波块装置。 第二子载波块装置由多个子载波组成。 第一和第二子载波块配置是不同的，但使用相同的子载波间隔和符号持续时间。

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。

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。

公开(公告)号：US20090213948A1

公开(公告)日：2009-08-27

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： H04J11/00 ,  H04L27/00 ,  H04L27/28

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：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：US09438445B2

公开(公告)日：2016-09-06

申请号：US13620567

申请日：2012-09-14

申请人： Hang Zhang ,  Peiying Zhu ,  Mo-Han Fong ,  Wen Tong ,  Nimal Senarath ,  Derek Yu ,  David Steer ,  Curtis S. Dodd

发明人： Hang Zhang ,  Peiying Zhu ,  Mo-Han Fong ,  Wen Tong ,  Nimal Senarath ,  Derek Yu ,  David Steer ,  Curtis S. Dodd

IPC分类号： H04L12/46 ,  H04L12/721 ,  H04W40/00 ,  H04W28/06 ,  H04W84/12 ,  H04L1/16 ,  H04L29/06 ,  H04W88/04 ,  H04L29/08

CPC分类号： H04L12/4633 ,  H04L1/1614 ,  H04L45/34 ,  H04L63/12 ,  H04L69/22 ,  H04L69/324 ,  H04W28/06 ,  H04W40/00 ,  H04W84/12 ,  H04W88/04

摘要： A method and system for wireless communication in which a plurality of media access control (“MAC”) packet data units (“PDUs”) corresponding to a plurality of wireless communication connections are received. The plurality of MAC PDUs is grouped into a relay packet and the relay packet is transmitted. Such grouping and transmission of the relay packet is performed by one or more relay nodes. The traffic control for the transmission can also be based on centralized or decentralized routing control and/or centralized or decentralized QoS control.

摘要翻译： 一种用于无线通信的方法和系统，其中接收与多个无线通信连接相对应的多个媒体访问控制（“MAC”）分组数据单元（“PDU”）。 将多个MAC PDU分组为中继分组，并发送中继分组。 中继分组的这种分组和传输由一个或多个中继节点执行。 传输的流量控制也可以基于集中式或分散式路由控制和/或集中式或分散式QoS控制。

公开(公告)号：US08711747B2

公开(公告)日：2014-04-29

申请号：US12831052

申请日：2010-07-06

申请人： Mo-Han Fong ,  Hang Zhang

发明人： Mo-Han Fong ,  Hang Zhang

IPC分类号： G08C17/00

CPC分类号： H04W52/0206 ,  H04W52/0216 ,  H04W52/0229 ,  Y02D70/1262 ,  Y02D70/146

摘要： Methods for saving power and facilitating transitions from power-saving states back to active states in mobile stations are provided. A base station transmits indication of a periodic interval at which system configuration information is to be transmitted, periodically transmits a current version of system configuration information and in advance of an action time of a new version of system configuration information, periodically transmits the new version of system configuration information at the periodic interval; and transmits a flag indicating whether the new version of system configuration information is available. In respect of each of at least one mobile station in a power-saving state, in which the mobile station (MS) is configured on a per-MS basis to periodically wake up and check for the presence of an information block relevant to the MS, the base station transmits an information block presence indicator indicative of whether the information block is present.

摘要翻译： 提供了节省电力并促进从省电状态转移回移动台的活动状态的方法。 基站发送系统配置信息要发送的周期性间隔的指示，周期性地发送系统配置信息的当前版本，并且在新版本的系统配置信息的动作时间之前，周期性地发送新版本的 周期性间隔的系统配置信息; 并发送指示新版本的系统配置信息是否可用的标志。 关于省电状态中的至少一个移动站中的每一个，其中移动站（MS）以每MS为基础配置以周期性地唤醒并检查与MS相关的信息块的存在 基站发送指示信息块是否存在的信息块存在指示符。

公开(公告)号：US08576753B2

公开(公告)日：2013-11-05

申请号：US12937476

申请日：2009-04-21

申请人： Nimal Gamini Senarath ,  Israfil Bahceci ,  Mo-Han Fong ,  Peiying Zhu ,  Derek Yu ,  Hang Zhang ,  Wen Tong ,  Sheng Sun

发明人： Nimal Gamini Senarath ,  Israfil Bahceci ,  Mo-Han Fong ,  Peiying Zhu ,  Derek Yu ,  Hang Zhang ,  Wen Tong ,  Sheng Sun

IPC分类号： H04B7/14

CPC分类号： H04B7/155 ,  H04W16/26 ,  H04W24/04 ,  H04W36/00 ,  H04W80/02 ,  H04W84/047

摘要： A relay station is provided for use in a wireless communication system. The wireless communication system includes a plurality of base stations communicatively coupled to a backhaul network and at least one mobile station. The relay station is shared by at least a first base station and a second base station. The relay station includes a transceiver, a controller and relay circuitry. The transceiver transmits signals to and receives signals both base stations and a mobile station. Signals transmitted to the base stations include a single preamble, MAP and FCH. The controller is electrically connected to the transceiver and is operable to measure a signal quality of the mobile station while connected to the first base station. The relay circuitry is electrically connected to the controller and is operable to conduct a phased handoff from the first base station to the second base station based on the signal quality.

摘要翻译： 提供了一种在无线通信系统中使用的中继站。 无线通信系统包括通信地耦合到回程网络和至少一个移动站的多个基站。 中继站由至少第一基站和第二基站共享。 中继站包括收发器，控制器和继电器电路。 收发器向基站和移动台发送信号并接收信号。 发送到基站的信号包括单个前导码，MAP和FCH。 控制器电连接到收发器，并且可操作以在连接到第一基站时测量移动台的信号质量。 继电器电路电连接到控制器，并且可操作以基于信号质量从第一基站到第二基站进行定相切换。