SYSTEMS AND METHODS FOR AVOIDING HIDDEN NODE COLLISIONS

    公开(公告)号:US20170290058A1

    公开(公告)日:2017-10-05

    申请号:US15088718

    申请日:2016-04-01

    IPC分类号: H04W74/08

    CPC分类号: H04W74/0816

    摘要: Disclosed herein are systems and methods that are directed to alleviating the hidden node problem occurring in wireless systems by using the simultaneous transmission and reception (STR) capability without increasing the medium access layer (MAC) overhead. Accordingly, a receiving device receiving a data packet from a transmitting device can simultaneously transmit a data packet, called a STR Clear to Send (CTS). This STR-CTS can create a guard zone around the receiving device to avoid collisions from unwanted transmissions from secondary devices, e.g., neighboring STAs and/or APs. In various embodiments, the STR-CTS packet transmitted by the receiving device can be decodable by legacy devices, e.g. legacy STAs and APs, as well as next generation devices, for example, those employing unlicensed technologies such as LAA.

    HYBRID DIGITAL AND ANALOG BEAMFORMING FOR LARGE ANTENNA ARRAYS
    3.
    发明申请
    HYBRID DIGITAL AND ANALOG BEAMFORMING FOR LARGE ANTENNA ARRAYS 有权
    用于大型天线阵列的混合数字和模拟波束形成

    公开(公告)号:US20160080051A1

    公开(公告)日:2016-03-17

    申请号:US14784256

    申请日:2013-12-12

    IPC分类号: H04B7/04 H04L27/20 H04B7/06

    摘要: A hybrid digital and analog beamforming device for a node operable with an antenna array is disclosed. In an example, the hybrid digital and analog beamforming device can include computer circuitry configured to: Segment antenna elements of an antenna array into at least two groups of antenna elements; map antenna ports for transmission chains to one group of the antenna elements; constrain digital precoding weights for a digital precoder for the antenna elements, where the digital precoding weight in dudes a digital phase and amplitude; and determine analog precoding weights for an analog precoder for the antenna elements, where the analog precoding weight includes an analog phase.

    摘要翻译: 公开了一种用于可与天线阵列可操作的节点的混合数字和模拟波束成形装置。 在一个示例中,混合数字和模拟波束成形装置可以包括被配置为:将天线阵列的天线元件分成至少两组天线元件的计算机电路; 将传输链的天线端口映射到一组天线元件; 约束用于天线元件的数字预编码器的数字预编码权重,其中数字预编码权重在数字相位和振幅中; 并确定用于天线元件的模拟预编码器的模拟预编码权重,其中模拟预编码权重包括模拟相位。

    Device, system, and method of adjusting channel utilization for wireless transmission
    8.
    发明授权
    Device, system, and method of adjusting channel utilization for wireless transmission 有权
    调整无线传输信道利用率的装置,系统和方法

    公开(公告)号:US08467472B2

    公开(公告)日:2013-06-18

    申请号:US12886648

    申请日:2010-09-21

    IPC分类号: H04L12/413

    摘要: Device, system, and method of adjusting channel utilization for wireless transmission. For example, a wireless communication unit may control a wireless transmission by a wireless communication device during a contention period, wherein the wireless communication unit is to wait for a back-off period prior to beginning the wireless transmission during the contention period, and wherein a duration of the back-off period is based on a transmission power of the wireless transmission. Other embodiments are described and claimed.

    摘要翻译: 调整无线传输信道利用率的装置,系统和方法。 例如,无线通信单元可以在竞争时段期间通过无线通信设备来控制无线传输,其中无线通信单元要在竞争期间开始无线传输之前等待退避时段,并且其中a 退避时段的持续时间基于无线传输的发送功率。 描述和要求保护其他实施例。

    DATA TRANSMISSION AND RECEPTION WITH HARQ AND NETWORK CODING
    10.
    发明申请
    DATA TRANSMISSION AND RECEPTION WITH HARQ AND NETWORK CODING 审中-公开
    数据传输和接收HARQ和网络编码

    公开(公告)号:US20120314655A1

    公开(公告)日:2012-12-13

    申请号:US13493828

    申请日:2012-06-11

    IPC分类号: H04W40/00

    摘要: Techniques for transmitting and receiving data with hybrid automatic retransmission (HARQ) and network coding via block operation are disclosed. In one design, a transmitter transmits a first block of packets to multiple receivers and receives ACK/NAK feedback for the first block of packets from the receivers. The transmitter identifies candidate packets for network coding based on the ACK/NAK feedback. A pool of candidate packets changes over time as more ACK/NAK feedback for transmitted packets is received from the receivers. The transmitter generates at least one network-coded packet based on the candidate packets. Each network-coded packet may be generated by channel coding each of at least two packets and combining the at least two packets after channel coding. The transmitter transmits another block of packets to the receivers. This block includes the at least one network-coded packet and may also include pending packets and/or new packets.

    摘要翻译: 公开了利用混合自动重传(HARQ)和通过块操作的网络编码来发送和接收数据的技术。 在一种设计中,发射机将多个分组的第一块发送到多个接收机,并且从接收机接收第一个分组块的ACK / NAK反馈。 发射机基于ACK / NAK反馈识别用于网络编码的候选分组。 候选分组池随着时间的推移而改变,因为从接收机接收到更多的发送分组的ACK / NAK反馈。 发射机基于候选分组生成至少一个网络编码分组。 可以通过对至少两个分组中的每一个进行信道编码来生成每个网络编码分组,并且在信道编码之后组合至少两个分组。 发射机向接收机发送另一个数据包。 该块包括至少一个网络编码分组,并且还可以包括未决分组和/或新分组。