Method and apparatus for transmitting reference signal in time division duplex system
    73.
    发明授权
    Method and apparatus for transmitting reference signal in time division duplex system 有权
    用于在时分双工系统中发送参考信号的方法和装置

    公开(公告)号:US08730850B2

    公开(公告)日:2014-05-20

    申请号:US13391887

    申请日:2010-09-13

    IPC分类号: H04J3/00

    摘要: A method and apparatus of transmitting a reference signal in a time division duplex (TDD) system is provided. A base station (BS) generates a plurality of demodulation reference signals (DMRSs) for respective layers, maps the plurality of DMRSs to a downlink pilot time slot (DwPTS) region for downlink transmission within a special subframe and transmits the plurality of DMRSs through a plurality of antennas. The special subframe is a subframe for separating uplink and downlink between an uplink (UL) subframe and a downlink (DL) subframe within a frame.

    摘要翻译: 提供了一种在时分双工(TDD)系统中发送参考信号的方法和装置。 基站(BS)为各层生成多个解调参考信号(DMRS),将多个DMRS映射到用于特殊子帧内的下行链路传输的下行链路导频时隙(DwPTS)区域,并通过一个 多个天线。 特殊子帧是用于分离帧内的上行链路(UL)子帧和下行链路(DL)子帧之间的上行链路和下行链路的子帧。

    Method and apparatus for generating ranging preamble code in wireless communication system
    74.
    发明授权
    Method and apparatus for generating ranging preamble code in wireless communication system 有权
    用于在无线通信系统中生成测距前导码的方法和装置

    公开(公告)号:US08391382B2

    公开(公告)日:2013-03-05

    申请号:US12835662

    申请日:2010-07-13

    IPC分类号: H04L27/28

    摘要: A method and apparatus of generating a ranging preamble code in a wireless communication system is provided. A mobile station (MS) receives ranging channel information, and generates the ranging preamble code by selecting one of a plurality of candidate ranging preamble codes based on the ranging channel information. The plurality of candidate ranging preamble codes are based on a Zadoff-Chu (ZC) sequence of which a length is NRP and a root index is rp, and The ranging channel information comprises at least one of a start root index r0 among root indices of the plurality of candidate ranging preamble codes and a control parameter y indicating the start root index.

    摘要翻译: 提供了一种在无线通信系统中生成测距前导码的方法和装置。 移动站(MS)接收测距信道信息,并且通过基于测距信道信息选择多个候选测距前导码中的一个来生成测距前导码。 多个候选测距前置码基于长度为NRP且根指数为rp的Zadoff-Chu(ZC)序列,测距信道信息包括以下各项中的至少一个起始根指数r0: 多个候选测距前导码和表示起始根索引的控制参数y。

    Method and apparatus for allocating ranging channel in wireless communication system
    75.
    发明授权
    Method and apparatus for allocating ranging channel in wireless communication system 有权
    用于在无线通信系统中分配测距信道的方法和装置

    公开(公告)号:US08340041B2

    公开(公告)日:2012-12-25

    申请号:US12829344

    申请日:2010-07-01

    IPC分类号: H04W56/00

    摘要: A method and apparatus of allocating a ranging channel in a wireless communication system is provided. A base station (BS) allocates at least one first ranging channel, having a first structure, and at least one second ranging channel, having a second structure, to a ranging subframe. The first structure or the second structure can be one of the ranging channel structures of an IEEE 802.16e system. A number of orthogonal frequency division multiplexing (OFDM) symbols included in the first structure and a number of OFDM symbols included in the second structure differs from each other. And a guard time including at least one OFDM symbol is allocated between the at least one first ranging channel and the at least one second ranging channel.

    摘要翻译: 提供了一种在无线通信系统中分配测距信道的方法和装置。 基站(BS)将具有第一结构的至少一个第一测距信道和具有第二结构的至少一个第二测距信道分配给测距子帧。 第一结构或第二结构可以是IEEE 802.16e系统的测距信道结构之一。 包括在第一结构中的多个正交频分复用(OFDM)符号和包括在第二结构中的多个OFDM符号彼此不同。 并且在所述至少一个第一测距信道和所述至少一个第二测距信道之间分配包括至少一个OFDM符号的保护时间。

    Direct communication between devices
    80.
    发明授权
    Direct communication between devices 有权
    设备之间的直接通信

    公开(公告)号:US09088970B2

    公开(公告)日:2015-07-21

    申请号:US13642592

    申请日:2011-04-25

    IPC分类号: H04W72/04 H04W76/02 H04W92/18

    摘要: The present invention relates to a wireless communication system, More specifically, the present invention relates to a method and an apparatus for direct communication between terminals. The method for performing communication between terminals using a first terminal in a wireless communication system comprises the steps of: transmitting request information for communication between terminals to a base station; receiving, from the base station, control information necessary for setting a link for communication between the terminals after transmitting the request information; setting a direct link between the terminals for data flow between the first and second terminals using the control information; and the first and second terminals performing communication for data transmission using the direct link between the terminals when the control information is not transmitted from the base station.

    摘要翻译: 无线通信系统技术领域本发明涉及一种无线通信系统。更具体地说,本发明涉及终端之间直接通信的方法和装置。 用于在无线通信系统中使用第一终端的终端之间进行通信的方法包括以下步骤:向终端发送终端之间的通信请求信息; 在发送所述请求信息之后,从所述基站接收设置所述终端之间的通信链路所需的控制信息; 使用所述控制信息在所述终端之间设置用于所述第一和第二终端之间的数据流的直接链路; 并且当不从基站发送控制信息时,第一和第二终端使用终端之间的直接链路进行数据传输通信。