Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel
    71.
    发明申请
    Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel 有权
    用于交织OFDMA同步信道的序列元素的方法和装置

    公开(公告)号:US20070183391A1

    公开(公告)日:2007-08-09

    申请号:US11351275

    申请日:2006-02-08

    IPC分类号: H04J3/06

    摘要: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted including a plurality of sequence elements intereleaved in time and frequency (610, 640). The synchronization channel signal sequence elements enable an initial acquisition and cell search method with low computational load by providing predetermined time domain symmetry (702, 704) for common sequence elements in OFDMA symbol periods (620, 660) for OFDMA symbol timing detection and frequency error detection in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    摘要翻译: 提供了一种用于发送包括发送的同步信道信号的正交频域多址(OFDMA)信号的方法和装置,包括在时间和频率上互相嵌合的多个序列元素(610,640)。 同步信道信号序列元件通过为OFDMA符号周期(620,660)中的公共序列元素提供用于OFDMA符号定时检测和频率误差的预定时域对称性(702,704),能够实现具有低计算负荷的初始采集和小区搜索方法 支持多系统带宽(同步和非同步系统)的OFDMA系统中的检测,具有短循环前缀长度和长循环前缀长度的大小区索引和OFDMA符号结构。

    "> Method and apparatus for implementing spatial division multiple access (
    74.
    发明申请
    Method and apparatus for implementing spatial division multiple access ("SDMA") to communicate user data and backhaul data with the same wireless time-frequency resources 有权
    用于实现空分多址(“SDMA”)以相同无线时频资源传送用户数据和回程数据的方法和装置

    公开(公告)号:US20070160019A1

    公开(公告)日:2007-07-12

    申请号:US11330474

    申请日:2006-01-12

    IPC分类号: H04Q7/24

    CPC分类号: H04W92/12 H04W4/18 H04W16/28

    摘要: A system [100] includes a base station [105] to communicate wireless data with at least one user terminal [125, 130] within a cell serviced by the base station [105]. A central backhaul access point [135] communicates wireless backhaul data with the base station [105]. At least a first portion of the wireless data and a second portion of the wireless backhaul data is communicated via Spatial Division Multiple Access (“SDMA”), and the first portion of the wireless data utilizes at least some same time-frequency resources as the second portion of the wireless backhaul data.

    摘要翻译: 系统[100]包括基站(105),用于将基站(105)中的无线数据与由基站[105]所服务的小区内的至少一个用户终端[125,130]进行通信。 中央回程接入点[135]与基站[105]通信无线回程数据。 无线数据的至少第一部分和无线回程数据的第二部分通过空分多址(“SDMA”)进行通信,无线数据的第一部分利用至少一些相同的时频资源,如 无线回程数据的第二部分。

    Method and apparatus for scheduling frequency selective and frequency diverse allocations in mobile communications systems
    75.
    发明申请
    Method and apparatus for scheduling frequency selective and frequency diverse allocations in mobile communications systems 失效
    用于在移动通信系统中调度频率选择和频率不同分配的方法和装置

    公开(公告)号:US20070159993A1

    公开(公告)日:2007-07-12

    申请号:US11330475

    申请日:2006-01-12

    IPC分类号: H04B7/204

    摘要: A base station (105) includes a scheduler (220) to determine a location of a user terminal (110) within a cell (125) of a wireless system (100). The cell has a cell boundary (125). The scheduler (220) also determines a subcarrier frequency diverse resource allocation for a call on the user terminal (110) in response to the location of the user terminal (110) being within a predetermined distance from an edge of the cell boundary (125). The scheduler (220) further determines a subcarrier frequency selective resource allocation for the call on the user terminal (110) in response to the location of the user terminal (110) being beyond a predetermined distance from the edge of the cell boundary. The base station (105) also includes a transceiver (215) to transmit the call according to the subcarrier frequency diverse resource allocation and the subcarrier frequency selective resource allocation.

    摘要翻译: 基站(105)包括调度器(220),用于确定无线系统(100)的小区(125)内的用户终端(110)的位置。 单元格具有单元格边界(125)。 调度器(220)还响应于距离小区边界(125)的边缘在预定距离内的用户终端(110)的位置,确定用户终端(110)上的呼叫的副载波频率不同资源分配, 。 调度器(220)还响应于用户终端(110)的距离小区边界边缘超出预定距离的方式,确定用户终端(110)上的呼叫的副载波频率选择性资源分配。 基站(105)还包括根据子载波频率不同资源分配和子载波频率选择性资源分配来发送呼叫的收发机(215)。

    Method and apparatus for channel quality feedback within a communication system
    77.
    发明申请
    Method and apparatus for channel quality feedback within a communication system 有权
    通信系统内信道质量反馈的方法和装置

    公开(公告)号:US20050289256A1

    公开(公告)日:2005-12-29

    申请号:US10423243

    申请日:2003-04-25

    摘要: A base station (101) will request the transmission of quality information from a particular remote stations (102, 103) only when data is queued to be transmitted to the remote stations. Once a remote station begins the transmission of channel quality information, the transmission of such information continues until the data transmission is successfully delivered to the remote station. The base station receives the channel quality information and adjusts the modulation and coding of the remote stations accordingly. Where data is transmitted simultaneously to a plurality of remote stations, a set of queues (303) for the multiple remote stations is maintained, and based on queue status, a channel quality request messages is sent to a sub-set of remote stations with data queued.

    摘要翻译: 只有当数据排队等待发送到远程站时,基站(101)将请求来自特定远程站(102,103)的质量信息的传输。 一旦远程站开始传输信道质量信息,这种信息的传输将继续进行,直到数据传输成功传送到远程站。 基站接收信道质量信息并相应地调整远程站的调制和编码。 在数据同时发送到多个远程站的情况下,维护用于多个远程站的一组队列(303),并且基于队列状态,将信道质量请求消息发送到具有数据的远程站的子集 排队

    Broadcast/multicast services in wireless communications networks and methods
    78.
    发明申请
    Broadcast/multicast services in wireless communications networks and methods 审中-公开
    无线通信网络中的广播/多播服务和方法

    公开(公告)号:US20050143085A1

    公开(公告)日:2005-06-30

    申请号:US10749021

    申请日:2003-12-30

    IPC分类号: H04W4/06 H04Q7/00

    CPC分类号: H04W4/06 H04W72/005

    摘要: A method in wireless communications network infrastructure including transmitting (210) first layer broadcast/multicast service content information on a first channel, and transmitting (220) second layer broadcast/multicast service content information on a second channel, at least one of the first and second channels a shared broadcast channel, wherein the first and second layer broadcast/multicast service content information is related. The information is received and combined (230) at a subscriber device, wherein a least one of the first and second layers capable of being decoded and used without the other of the first and second layers.

    摘要翻译: 一种无线通信网络基础设施中的方法,包括在第一信道上发送(210)第一层广播/组播服务内容信息,以及在第二信道上发送(220)第二层广播/多播业务内容信息,所述第一和第 第二信道是共享广播信道,其中第一和第二层广播/多播服务内容信息相关。 在订户设备处接收和组合信息(230),其中第一层和第二层中的至少一个能够被解码和使用,而不需要第一层和第二层中的另一层。

    Encoding method and apparatus using squished trellis codes
    80.
    发明授权
    Encoding method and apparatus using squished trellis codes 有权
    使用压缩格状码的编码方法和装置

    公开(公告)号:US06769091B2

    公开(公告)日:2004-07-27

    申请号:US09982326

    申请日:2001-10-17

    IPC分类号: H03M1303

    摘要: A squished trellis encoder encodes blocks of information with unequal error correction. A multiplexing switch partitions the information block into a first portion and a second portion. A first trellis encoder encodes the first portion. A second trellis encoder encodes the second portion. An initial state information generator maps the states of the first trellis encoder to the second trellis encoder to establish initial conditions for the states of the second trellis encoder. A delay delays the second portion from processing by the second trellis encoder until the initial state information generator has mapped the states. An associated decoder can use the novel squished approach or other alternative approaches.

    摘要翻译: 一个挤压网格编码器对不均匀纠错的信息块进行编码。 复用开关将信息块分割成第一部分和第二部分。 第一格栅编码器对第一部分进行编码。 第二网格编码器对第二部分进行编码。 初始状态信息生成器将第一网格编码器的状态映射到第二网格编码器,以建立第二网格编码器的状态的初始条件。 延迟延迟第二部分由第二网格编码器处理直到初始状态信息发生器映射了状态。 相关联的解码器可以使用新颖的压缩方法或其他替代方法。