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    • 73. 发明申请
    • Efficient bandwith request for broadband wireless networks
    • 高效带宽宽带无线网络请求
    • US20090323602A1
    • 2009-12-31
    • US12217137
    • 2008-06-30
    • Qinghua LiHujun YinYuan ZhuXiangying Yang
    • Qinghua LiHujun YinYuan ZhuXiangying Yang
    • H04W28/20H04L27/28
    • H04W72/085H04L47/14H04W72/0406H04W74/0833
    • Methods and apparatuses for scheduling transmissions between a base station and multiple user stations in a broadband wireless access network may include a subscriber station generating a bandwidth request which includes one of a limited number of available and predefined preamble sequences and a data portion identifying the resources requested. The subscriber station randomly selects a contention slot in a wireless channel, allocated by the base station, for sending a bandwidth request. The receiving base station is able to detect the preamble sequence of bandwidth requests and differentiate between subscribers even when bandwidth requests of two or more subscribers may collide by virtue of selecting the same contention slot. In this manner, latency and overhead of bandwidth requests may be improved. Additional variants and embodiments are also disclosed.
    • 用于调度宽带无线接入网络中的基站与多个用户站之间的传输的方法和装置可以包括生成带宽请求的用户站,所述用户站包括有限数量的可用和预定义的前导码序列之一,以及标识所请求的资源的数据部分 。 用户台随机选择由基站分配的用于发送带宽请求的无线信道中的竞争时隙。 接收基站能够检测带宽请求的前同步码序列并区分用户,即使当两个或多个用户的带宽请求可以通过选择相同的争用时隙而相冲突。 以这种方式,可以提高带宽请求的延迟和开销。 还公开了其它变型和实施方案。
    • 74. 发明申请
    • SYSTEMS, METHODS, AND DEVICES FOR INTERFERENCE MITIGATION IN WIRELESS NETWORKS
    • 用于无线网络干扰减轻的系统,方法和设备
    • US20160142158A1
    • 2016-05-19
    • US14858975
    • 2015-09-18
    • Qinghua LiXiaogang ChenYuan ZhuHujun Yin
    • Qinghua LiXiaogang ChenYuan ZhuHujun Yin
    • H04B15/00H04L5/00H04W24/02
    • H04B15/00H04B7/0452H04L5/0023H04L5/0048H04L27/2613H04L27/2657H04L27/2695
    • Example systems, methods, and devices for mitigating interference in wireless networks are discussed. One example method includes the operations of passing channel frequency offsets of a plurality of LTF symbols on a plurality of subcarriers through a high pass frequency band, encoding the plurality of LTF symbols with a plurality of LTF sequences across frequency, and encoding the LTF symbols in time and/or frequency. Another example includes the operations of receiving a plurality of LTF symbols on a plurality of subcarriers for channel estimation of one or more streams, removing the encoding across time, removing the encoding across frequency, and removing the LTF sequence(s), and passing the modified LTF symbols through a smoothing filter, for example, a low pass filter for removing the interference due to CFOs. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.
    • 讨论了用于减轻无线网络干扰的示例系统,方法和设备。 一个示例性方法包括通过高通频带在多个子载波上传递多个LTF符号的信道频率偏移的操作,通过频率对多个LTF序列进行编码,并对LTF符号进行编码 时间和/或频率。 另一示例包括在多个子载波上接收多个LTF符号以用于一个或多个流的信道估计,跨越时间去除编码,去除跨频率的编码以及去除LTF序列的操作,以及将 通过平滑滤波器(例如,用于消除由CFO引起的干扰)的低通滤波器来修改LTF符号。 本文描述的方法,装置和系统可以应用于802.11ax或任何其它无线标准。