Method and system for user equipment location determination on a wireless transmission system
    61.
    发明授权
    Method and system for user equipment location determination on a wireless transmission system 有权
    无线传输系统用户设备位置确定方法和系统

    公开(公告)号:US08885581B2

    公开(公告)日:2014-11-11

    申请号:US13147272

    申请日:2010-02-05

    摘要: Neighbor cell hearability can be improved by including an additional reference signal that can be detected at a low sensitivity and a low signal-to-noise ratio, by introducing non-unity frequency reuse for the signals used for a time difference of arrival (TDOA) measurement, e.g., orthogonality of signals transmitted from the serving cell sites and the various neighbor cell sites. The new reference signal, called the TDOA-RS, is proposed to improve the hearability of neighbor cells in a cellular network that deploys 3GPP EUTRAN (LTE) system, and the TDOA-RS can be transmitted in any resource blocks (RB) for POSCH and/or MBSFN subframe, regardless of whether the latter is on a carrier supporting both PMCH and POSCH or not. Besides the additional TDOA-RS reference signal, an additional synchronization signal (TDOA-sync) may also be included to improve the hearability of neighbor cells.

    摘要翻译: 通过对于用于到达时差(TDOA)的信号引入非单位频率重用,可以通过包括可以在低灵敏度和低信噪比下检测的附加参考信号来提高邻近小区的可听性, 测量,例如从服务小区站点和各个相邻小区站点发送的信号的正交性。 提出了称为TDOA-RS的新参考信号,以提高部署3GPP EUTRAN(LTE)系统的蜂窝网络中相邻小区的可听性,并且TDOA-RS可以在用于POSCH的任何资源块(RB)中发送 和/或MBSFN子帧,而不管后者是否在支持PMCH和POSCH的载波上。 除了附加的TDOA-RS参考信号之外,还可以包括附加同步信号(TDOA-sync)以提高相邻小区的可听性。

    Aspects to support LTE-A downlink hi-order MIMO
    64.
    发明授权
    Aspects to support LTE-A downlink hi-order MIMO 有权
    设计方面支持LTE-A下行高阶MIMO

    公开(公告)号:US08315225B2

    公开(公告)日:2012-11-20

    申请号:US13068836

    申请日:2009-09-21

    IPC分类号: H04W72/00

    摘要: A method of operation of a MIMO transmitter, in a cellular network supporting both legacy standard-compliant mobile terminals and next generation standard-compliant mobile terminals, the method comprising defining a matrix of resource blocks within an information channel of the cellular network, wherein each resource block corresponds to a region of subcarriers of a transmission timeslot at a given frequency subband; assigning a first set of reference signals (RSs) for the legacy standard-compliant mobile terminals to resource blocks at specific locations within the matrix to be transmitted by the MIMO transmitter, the specific locations being defined by, the legacy standard; and assigning a second set of RSs for the next-generation standard-compliant mobile terminals to other resource blocks within the matrix to be transmitted by the MIMO transmitter.

    摘要翻译: 一种在支持传统标准兼容移动终端和下一代标准兼容移动终端的蜂窝网络中的MIMO发射机的操作方法,所述方法包括定义蜂窝网络的信息信道内的资源块矩阵,其中每个 资源块对应于给定频率子带处的传输时隙的子载波的区域; 将传统标准兼容移动终端的第一组参考信号(RS)分配给由MIMO发射机发送的矩阵内的特定位置处的资源块,所述特定位置由传统标准定义; 以及将下一代标准兼容移动终端的第二组RS分配给由MIMO发射机发送的矩阵内的其他资源块。

    Communication systems and methods
    65.
    发明授权
    Communication systems and methods 有权
    通信系统和方法

    公开(公告)号:US08254429B1

    公开(公告)日:2012-08-28

    申请号:US12243023

    申请日:2008-10-01

    IPC分类号: H04B1/00 H04L27/00

    摘要: In accordance with embodiments, a communication system includes a first device and a second device in communication with the first device. The second device has at least a first pair and a second pair of antennas. The second device spreads a communication bit by a predetermined spreading factor and forms a first set of spatial block codes in frequency domain based on the spread communication bit. The first set of spatial block codes being consecutively transmitted on one of the first and second pairs of antennas.

    摘要翻译: 根据实施例,通信系统包括与第一设备通信的第一设备和第二设备。 第二装置具有至少第一对和第二对天线。 第二设备以预定的扩展因子扩展通信位,并且基于扩展通信位在频域中形成第一组空间块码。 第一组空间块码在第一和第二对天线之一上连续发射。

    Relay Techniques Suitable for User Equipment in Downlink
    66.
    发明申请
    Relay Techniques Suitable for User Equipment in Downlink 有权
    中继技术适用于下行用户设备

    公开(公告)号:US20120163282A1

    公开(公告)日:2012-06-28

    申请号:US13126226

    申请日:2009-10-30

    IPC分类号: H04B7/14 H04W4/00

    摘要: The present invention provides a solution to improve coverage and cell edge performance in a mobile user communication system is the use of fixed relays, which are pieces of infrastructure without a wired backhaul connection. The relays transmit or “relay” downlink messages between the base station (BS) and mobile stations (MSs) through a multi-hop communication. The present invention is a method and system for supporting a multiple user mobile broadband communication network that includes relay techniques suitable for user equipment in the downlink communication to the user equipment.

    摘要翻译: 本发明提供了一种在移动用户通信系统中提高覆盖和小区边缘性能的解决方案,即使用固定继电器,固定继电器是没有有线回程连接的基础设施。 中继站通过多跳通信在基站(BS)和移动站(MS)之间发送或“中继”下行链路消息。 本发明是一种用于支持多用户移动宽带通信网络的方法和系统,该多用户移动宽带通信网络包括适用于向用户设备的下行链路通信中的用户设备的中继技术。

    System and method for frequency division multiple access communications
    67.
    发明授权
    System and method for frequency division multiple access communications 有权
    用于频分多址通信的系统和方法

    公开(公告)号:US08169994B2

    公开(公告)日:2012-05-01

    申请号:US11996463

    申请日:2006-07-27

    IPC分类号: H04B7/208

    摘要: A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions, having an improved pilot insertion scheme for single carrier based communications is provided. A first time duration for transmission of a data payload block (7) is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block (70) is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration (70) is not greater than the first time duration (7).

    摘要翻译: 提供了一种用于上行链路和/或下行链路方向上的无线频分多址通信的方法和系统,其具有用于基于单载波的通信的改进的导频插入方案。 建立用于发送数据有效载荷块(7)的第一时间段,并且使用第一频域或时域处理传输。 建立用于发送至少一个导频块(70)的第二持续时间,并且使用第二频域或时域处理该传输,第二持续时间(70)不大于第一持续时间(7) )。

    METHOD AND SYSTEM FOR COMBINING OFDM AND TRANSFORMED OFDM
    68.
    发明申请
    METHOD AND SYSTEM FOR COMBINING OFDM AND TRANSFORMED OFDM 有权
    用于组合OFDM和变换OFDM的方法和系统

    公开(公告)号:US20110164491A1

    公开(公告)日:2011-07-07

    申请号:US13047259

    申请日:2011-03-14

    IPC分类号: H04J11/00

    摘要: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.

    摘要翻译: 提供了使OFDM发射机能够用于传输常规OFDM或变换OFDM形式的方法和系统。 提供了一种用于在IFFT之前变换样本的编码和调制序列的技术,其使得能够使用常规OFDM或变换OFDM来发送变换的样本序列。 用于变换样本的编码和调制序列的变换函数的选择可以基于优化发射机和接收机之间的特定操作条件的变换函数。 在本发明的一些实施例中,OFDM和时变OFDM在传输帧中以时间和/或频率被复用。 在本发明的一些实施例中,提供了导频模式,其中使用OFDM发送导频,并且使用OFDM和/或经变换的OFDM发送数据。

    Method and system for combining OFDM and transformed OFDM
    69.
    发明授权
    Method and system for combining OFDM and transformed OFDM 有权
    用于组合OFDM和变换OFDM的方法和系统

    公开(公告)号:US07929407B2

    公开(公告)日:2011-04-19

    申请号:US11909567

    申请日:2006-03-30

    摘要: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.

    摘要翻译: 提供了使OFDM发射机能够用于传输常规OFDM或变换OFDM形式的方法和系统。 提供了一种用于在IFFT之前变换样本的编码和调制序列的技术,其使得能够使用常规OFDM或变换OFDM来发送变换的样本序列。 用于变换样本的编码和调制序列的变换函数的选择可以基于优化发射机和接收机之间的特定操作条件的变换函数。 在本发明的一些实施例中,OFDM和时变OFDM在传输帧中以时间和/或频率被复用。 在本发明的一些实施例中,提供了导频模式,其中使用OFDM发送导频,并且使用OFDM和/或经变换的OFDM发送数据。