公开(公告)号：US20110310847A1

公开(公告)日：2011-12-22

申请号：US13221579

申请日：2011-08-30

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： H04W36/18

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：US08073063B2

公开(公告)日：2011-12-06

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： H04K1/10

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 includes common pilot symbols that can be detected by all receivers receiving the OFDM frame. In some implementations the zone of the second type includes dedicated pilot symbols that are only detectable by a receiver that is aware of pre-processing used to encode the dedicated pilot symbols.

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，其仅由知道用于编码专用导频符号的预处理的接收机可检测。

公开(公告)号：US08023466B2

公开(公告)日：2011-09-20

申请号：US11630473

申请日：2005-06-22

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： The soft handoff in an OFDMA system. 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 have subcarriers with a subchannel definition, for example, an identical permutation.

摘要翻译： OFDMA系统中的软切换。 如果基站的导频信号强度超过定义的阈值，则将基站添加到活动集列表中。 多个正交频分复用（OFDM）符号中的子载波被划分并分配给子信道。 OFDM符号被分割和多路复用。 定义了具有子信道的第一维度和分割和多路复用的OFDM符号的第二维度的软切换区域。 软切换区具有子信道定义，例如相同的置换。

公开(公告)号：US20110222504A1

公开(公告)日：2011-09-15

申请号：US13114579

申请日：2011-05-24

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： H04W72/04

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-I 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：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：US20070286066A1

公开(公告)日：2007-12-13

申请号：US11665310

申请日：2005-10-17

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

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

IPC分类号： H04J11/00

CPC分类号： H04W72/0453 ,  H04L5/0058 ,  H04L5/0091 ,  H04L5/0092 ,  H04L27/2601 ,  H04W28/06 ,  H04W72/042

摘要： A channel descriptor management message is transmitted on a broadcast connection to a mobile terminal. The channel descriptor management message provides a format for a frame. The frame includes a resource space. The channel descriptor management message defines a plurality of channels within the resource space and allocates at least one of the channels to a plurality of users. Subsequent resource allocation messages may refer to a location within a channel rather than a location within the entire resource space.

摘要翻译： 信道描述符管理消息在广播连接上被发送到移动终端。 信道描述符管理消息提供帧的格式。 该帧包括资源空间。 信道描述符管理消息定义资源空间内的多个信道，并且将至少一个信道分配给多个用户。 随后的资源分配消息可以指代信道内的位置，而不是整个资源空间内的位置。

公开(公告)号：US20090252079A1

公开(公告)日：2009-10-08

申请号：US12300522

申请日：2007-05-31

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

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

IPC分类号： H04J11/00 ,  H04B7/14

CPC分类号： H04B7/14 ,  H04B7/155 ,  H04L27/2601 ,  H04W72/04 ,  H04W72/0446 ,  H04W84/047 ,  H04W88/04

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 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.

摘要翻译： 方法和系统被提供用于具有一个或多个小区的无线网络，其中每个小区包括基站（BS），至少一个中继站（RS）和至少一个移动台（MS）。 所述至少一个中继站可以用作在BS和MS之间提供通信的中间站。 提供了用于分配用于BS，RS和/或MS之间的通信的OFDM资源的方法，例如将传输资源划分为上行链路和下行链路传输，以及将导频符号插入到由RS使用的传输资源中的方法。 在本发明的一些实施例中，所述方法是一致的和/或可以与诸如802.16e的现有标准结合使用。

公开(公告)号：US09071321B2

公开(公告)日：2015-06-30

申请号：US12300522

申请日：2007-05-31

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

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

IPC分类号： H04B7/204 ,  H04B7/208 ,  H04B7/155 ,  H04W88/04 ,  H04W72/04 ,  H04W84/04

CPC分类号： H04B7/14 ,  H04B7/155 ,  H04L27/2601 ,  H04W72/04 ,  H04W72/0446 ,  H04W84/047 ,  H04W88/04

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 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.

摘要翻译： 方法和系统被提供用于具有一个或多个小区的无线网络，其中每个小区包括基站（BS），至少一个中继站（RS）和至少一个移动台（MS）。 所述至少一个中继站可以用作在BS和MS之间提供通信的中间站。 提供了用于分配用于BS，RS和/或MS之间的通信的OFDM资源的方法，例如将传输资源划分为上行链路和下行链路传输，以及将导频符号插入到由RS使用的传输资源中的方法。 在本发明的一些实施例中，所述方法是一致的和/或可以与诸如802.16e的现有标准结合使用。

公开(公告)号：US08909226B2

公开(公告)日：2014-12-09

申请号：US11570028

申请日：2005-06-03

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

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

IPC分类号： H04W36/00 ,  H04W36/30 ,  H04W36/18

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 stations 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个基站之间共享，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。