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    Multiple-input multiple output system and method
    1.
    发明专利
    Multiple-input multiple output system and method 有权
    多输入多输出系统及方法

    公开(公告)号：JP2013132064A

    公开(公告)日：2013-07-04

    申请号：JP2013021280

    申请日：2013-02-06

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： SUN QINFANG ,  CHOI WON-JOON ,  JEFFREY M GILBERT ,  ARDAVAN MALEKI TEHRANI

    IPC: H04J99/00 ,  H04B7/04 ,  H04L20060101 ,  H04Q7/00

    CPC classification number: H04B7/0421 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0684 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/0656 ,  H04L1/1819 ,  H04L1/1829 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/0014 ,  H04L2025/03426

    Abstract: PROBLEM TO BE SOLVED: To provide a system which is for a legacy device compatible with the IEEE802.11a specification and the 802.11g specification for a wireless LAN (WLAN) and prevents "stomping" of MIMO packets by starting transmission of a subsequent MIMO packet before completing a preceding MIMO packet.SOLUTION: A time-division training pattern for MIMO packets is provided. In this pattern, a first antenna can transmit a short symbol, a first long symbol, and then a SIGNAL symbol in this order. A second antenna can transmit a second long symbol after the transmission of the legacy SIGNAL symbol. The first and second antennas can transmit SIGNAL symbols (associated with MIMO data) substantially simultaneously after transmission of the second long symbol. The invention allows a legacy device to decode the length of a MIMO packet and refrain from the transmission during the period of the MIMO packet.

    Abstract translation: 要解决的问题：提供一种用于与IEEE802.11a规范兼容的传统设备和用于无线LAN（WLAN）的802.11g规范的系统，并通过开始后续MIMO分组的传输来防止MIMO分组的“踩踏” 在完成先前的MIMO分组之前。提供了一种用于MIMO分组的时分训练模式。 在该模式中，第一天线可以按顺序发送短符号，第一长符号，然后发送信号符号。 第二天线可以在传统的SIGNAL符号的传输之后发送第二个长符号。 第一和第二天线可以在发送第二长符号之后基本上同时发送信号符号（与MIMO数据相关联）。 本发明允许传统设备对MIMO分组的长度进行解码，并且避免在MIMO分组期间的传输。

    Multiple-input multiple-output system and method
    2.
    发明专利
    Multiple-input multiple-output system and method 有权
    多输入多输出系统及方法

    公开(公告)号：JP2013240058A

    公开(公告)日：2013-11-28

    申请号：JP2013118247

    申请日：2013-06-04

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： SUN QINFANG ,  CHOI WON-JOON ,  JEFFREY M GILBERT ,  ARDAVAN MALEKI TEHRANI

    IPC: H04J99/00 ,  H04B7/04 ,  H04J11/00 ,  H04L20060101 ,  H04Q7/00 ,  H04W16/28 ,  H04W84/12

    CPC classification number: H04B7/0421 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0684 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/0656 ,  H04L1/1819 ,  H04L1/1829 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/0014 ,  H04L2025/03426

    Abstract: PROBLEM TO BE SOLVED: To provide a system that prevents a legacy device conforming to the IEEE 802.11a and 802.11g standards for wireless LANs (WLANs) from "stomping" on a MIMO packet caused by starting transmission of a subsequent MIMO packet before transmission of a preceding MIMO packet is complete.SOLUTION: A multiple-input multiple-output (MIMO) system can transmit through multiple antennas simultaneously and receive through multiple antennas simultaneously. However, because a legacy device conforming to the 802.11a standard and the 802.11g standard is not capable of decoding multiple data streams, such a legacy device may "stomp" on a MIMO packet by starting transmission before transmission of a preceding MIMO packet is complete. This invention makes it possible to decode the length of a MIMO packet and to refrain from transmission during the period of that MIMO packet. This MIMO system and method is optimized to achieve efficient transmission of packets.

    Abstract translation: 要解决的问题：提供一种防止符合IEEE 802.11a和802.11g标准的无线局域网（WLAN）的传统设备的系统在由于在发送之前开始发送后续MIMO分组而引起的MIMO分组“踩踏” 一个先前的MIMO分组是完整的。解决方案：多输入多输出（MIMO）系统可以同时通过多个天线发送并同时通过多个天线进行接收。 然而，因为符合802.11a标准和802.11g标准的传统设备不能解码多个数据流，所以这样的传统设备可能在前一个MIMO分组的传输完成之前通过开始传输在MIMO分组上“踩踏” 。 本发明使得可以解码MIMO分组的长度并避免在该MIMO分组的周期期间的传输。 该MIMO系统和方法被优化以实现分组的有效传输。

    MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM AND METHOD
    4.
    发明专利
    MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM AND METHOD 未知

    公开(公告)号：CA2821439A1

    公开(公告)日：2005-05-19

    申请号：CA2821439

    申请日：2004-11-04

    Applicant: QUALCOMM INC

    Inventor： SUN QINFANG ,  CHOI WON-JOON ,  GILBERT JEFFREY M ,  TEHRANI ARDAVAN MALEKI

    IPC: H04W24/02 ,  H04B7/04 ,  H04J99/00 ,  H04L20060101 ,  H04Q7/00 ,  H04W24/00

    Abstract: A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may "stomp" on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.

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