Methods and systems for enabling feedback in wireless communication networks
    71.
    发明授权
    Methods and systems for enabling feedback in wireless communication networks 有权
    在无线通信网络中实现反馈的方法和系统

    公开(公告)号:US09008013B2

    公开(公告)日:2015-04-14

    申请号:US13342654

    申请日:2012-01-03

    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。

    Communication resource allocation systems and methods
    72.
    发明授权
    Communication resource allocation systems and methods 有权
    通信资源分配系统和方法

    公开(公告)号:US08797836B2

    公开(公告)日:2014-08-05

    申请号:US11665310

    申请日:2005-10-17

    IPC分类号: H04J11/00

    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。

    Wireless relay network media access control layer control plane system and method
    73.
    发明授权
    Wireless relay network media access control layer control plane system and method 有权
    无线中继网络媒体接入控制层控制平面系统及方法

    公开(公告)号:US08660035B2

    公开(公告)日:2014-02-25

    申请号:US12092797

    申请日:2006-11-10

    IPC分类号: H04L12/28 H04B7/14

    摘要: A method and system for using a communication network having a relay node to provide wireless communication with a mobile station. A ranging region is established with the mobile station in which the establishment of the ranging region includes the transmission of control information corresponding to the relay node. The mobile station is allowed to enter the communication network. The relay node is used to wirelessly communicate with the mobile station in at least one of the uplink and downlink directions.

    摘要翻译: 一种使用具有中继节点的通信网络来提供与移动台的无线通信的方法和系统。 与移动台建立测距区域,其中测距区域的建立包括对应于中继节点的控制信息的传输。 移动台被允许进入通信网络。 中继节点用于在上行链路和下行链路方向中的至少一个方面与移动台进行无线通信。

    Methods and systems for OFDM using code division multiplexing
    74.
    发明授权
    Methods and systems for OFDM using code division multiplexing 有权
    使用码分复用的OFDM方法和系统

    公开(公告)号:US08588276B2

    公开(公告)日:2013-11-19

    申请号:US13333463

    申请日:2011-12-21

    IPC分类号: H04B1/707

    摘要: In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.

    摘要翻译: 在本发明的一些实施例中,OFDM符号作为多个簇发送。 在多个OFDM符号持续时间内,群集包括频率上的多个OFDM子载波。 每个簇包括数据以及作为信道估计的参考信号的导频信息。 在一些实施例中,多个集群共同地占用用于传输的频域中的可用子载波集合。 在本发明的一些实施例中,使用码分多路复用(CDM)在每个簇内扩展数据和/或导频。 在一些实施例中,通过在OFDM码元持续时间的其余部分上分配关于多个OFDM符号持续时间的特定数目和导频上的数据来分离导频和数据。 可以在时间和/或频率方向上执行CDM扩展。

    SOFT HANDOFF IN OFDMA SYSTEM
    75.
    发明申请
    SOFT HANDOFF IN OFDMA SYSTEM 有权
    OFDMA系统中的软操作

    公开(公告)号:US20120327905A1

    公开(公告)日:2012-12-27

    申请号:US13597921

    申请日:2012-08-29

    IPC分类号: H04W36/18

    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.

    摘要翻译: 披露了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的子载波,例如相同的置换。

    Methods and systems for orthogonal frequency division multiplexing (OFDM) multiple zone partitioning
    78.
    发明授权
    Methods and systems for orthogonal frequency division multiplexing (OFDM) multiple zone partitioning 有权
    用于正交频分复用(OFDM)多区划分的方法和系统

    公开(公告)号:US08073063B2

    公开(公告)日:2011-12-06

    申请号:US12064563

    申请日:2006-08-23

    IPC分类号: H04K1/10

    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。

    Soft handoff in OFDMA system
    79.
    发明授权
    Soft handoff in OFDMA system 有权
    OFDMA系统中的软切换

    公开(公告)号:US08023466B2

    公开(公告)日:2011-09-20

    申请号:US11630473

    申请日:2005-06-22

    IPC分类号: H04W36/00

    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。

    PREAMBLES IN OFDMA SYSTEM
    80.
    发明申请
    PREAMBLES IN OFDMA SYSTEM 有权
    OFDMA系统中的前缀

    公开(公告)号:US20110222504A1

    公开(公告)日:2011-09-15

    申请号:US13114579

    申请日:2011-05-24

    IPC分类号: H04W72/04

    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。