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    • 55. 发明授权
    • Physical layer structures and initial access schemes in an unsynchronized communication network
    • 物理层结构和不同步通信网络中的初始访问方案
    • US07738437B2
    • 2010-06-15
    • US10760424
    • 2004-01-21
    • Jianglei MaMing JiaPeiying ZhuWen Tong
    • Jianglei MaMing JiaPeiying ZhuWen Tong
    • H04B7/216H04B1/00H04J11/00
    • H04L5/0048H04B2201/70701H04J11/0069H04L5/0007H04L25/0224H04L27/2655H04W74/00
    • Physical layer structures and related access schemes for unsynchronized communication networks are provided. Access channel information, preferably including a common synchronization code associated with all transceiver stations in a communication network and a cell-specific synchronization code uniquely associated with one of the transceiver stations, is modulated onto at least one set of time-continuous signal components of a communication signal. In order to access the communication network, communication terminals search for the access channel information in one or more sets of time-continuous signal components and synchronization parameters are then determined based on a location of the access channel information in the sets of time-continuous signal components. Some embodiments of the invention provide for joint frame synchronization and coarse timing synchronization. In further embodiments, the communication signal also includes a scattered pilot channel onto which a portion of the access channel information, preferably the cell-specific synchronization code, is modulated. The pilot channels may then be re-used for initial access operations in addition to its conventional uses for such operations as channel estimation.
    • 提供了用于非同步通信网络的物理层结构和相关访问方案。 优选地包括与通信网络中的所有收发机站相关联的公共同步码和与这些收发信机之一唯一相关联的小区特定同步码的接入信道信息被调制到至少一组时间连续信号分量 通信信号。 为了访问通信网络,通信终端在一组或多组时间连续信号分量中搜索接入信道信息,然后基于时间连续信号组中的接入信道信息的位置来确定同步参数 组件。 本发明的一些实施例提供了联合帧同步和粗略定时同步。 在另外的实施例中,通信信号还包括一个分散的导频信道,一个部分接入信道信息,最好是小区特定的同步码被调制到该导频信道上。 然后,除了用于诸如信道估计之类的操作的常规用途之外,导频信道可以被重新用于初始接入操作。
    • 57. 发明授权
    • Virtual mimo communication system
    • 虚拟mimo通信系统
    • US07508798B2
    • 2009-03-24
    • US10321999
    • 2002-12-16
    • Wen TongJianglei MaPeiying ZhuMing JiaDong-Sheng Yu
    • Wen TongJianglei MaPeiying ZhuMing JiaDong-Sheng Yu
    • H04Q11/00
    • H04B7/0891H04B7/026H04B7/0669H04J13/16H04L1/0026H04L1/0618H04L5/0026H04L5/0035H04L5/0048H04L5/0094H04L25/0226
    • The present invention provides an effective way to create a virtual MIMO transmission system using mobile terminals that have only one transmit path and antenna. This is accomplished by assigning mobile terminals to a group and assigning certain shared resources and user-specific resources to those mobile terminals in the group. In a synchronized fashion, the mobile terminals will provide uplink transmission in concert, as if they were a single entity having multiple transmission paths and antennas. Preferably, the shared resources bear on how the data is transmitted, and the user-specific resources relate to pilot signals. The data transmitted may be encoded in any number of ways, and in one embodiment, the mobile terminals may relay their information to each other, such that uplink transmissions can incorporate STTD decoding or other space-time codes. The invention is applicable to virtually any multiple access technology, including OFDM, TDMA, and CDMA, preferably synchronous CDMA.
    • 本发明提供了使用仅具有一个发送路径和天线的移动终端来创建虚拟MIMO传输系统的有效方式。 这通过将移动终端分配给组并且向组中的那些移动终端分配特定共享资源和用户特定资源来实现。 以同步方式,移动终端将一起提供上行链路传输,好像它们是具有多个传输路径和天线的单个实体。 优选地,共享资源对数据的传输方式如何,并且用户特定的资源与导频信号有关。 传输的数据可以以任何数量的方式进行编码,并且在一个实施例中,移动终端可以将它们的信息彼此中继,使得上行链路传输可以包含STTD解码或其他时空码。 本发明可应用于几乎任何多址接入技术,包括OFDM,TDMA和CDMA,优选地是同步CDMA。
    • 59. 发明申请
    • Methods and systems for transmission of orthogonal frequency division multiplexed symbols
    • 用于传输正交频分复用符号的方法和系统
    • US20090028258A1
    • 2009-01-29
    • US11887115
    • 2006-03-30
    • Jianglei MaHang ZhangWen TongPeiying ZhuMing Jia
    • Jianglei MaHang ZhangWen TongPeiying ZhuMing Jia
    • H04L27/28
    • H04L27/2602H04L1/0003H04L1/0009H04L27/2655
    • In some embodiments of the present invention there is provided a frame structure for transmitting an integer number of OFDM symbols in which some of the OFDM symbols are to be transmitted in a unicast format and some of the OFDM symbols are to be transmitted in a broadcast format. The frame structure includes partitioning of a frame into at least two portions to accommodate both unicast and broadcast modes in the frame. The frame structure is used for transmitting multiple frames in a serial manner from at least one transmitter. The unicast mode supports transmission of OFDM symbols from a single transmitter to a single receiver. The broadcast mode supports transmission of OFDM symbols from multiple transmitters to all receivers within range of the multiple transmitters. The multicast mode supports transmission of OFDM symbols from multiple transmitters to multiple receivers within range of the multiple transmitters.
    • 在本发明的一些实施例中,提供了一种用于发送整数个OFDM符号的帧结构,其中一些OFDM符号将以单播格式发送,并且一些OFDM符号将以广播格式发送 。 帧结构包括将帧划分成至少两个部分以适应帧中的单播和广播模式。 帧结构用于从至少一个发射机以串行方式发送多个帧。 单播模式支持将OFDM符号从单个发射机传输到单个接收机。 广播模式支持从多个发射机向多个发射机的范围内的所有接收机传输OFDM符号。 组播模式支持将多个发射机的OFDM符号从多个发射机的范围内传输到多个接收机。