Method and apparatus for data transmissions in a wireless network
    6.
    发明授权
    Method and apparatus for data transmissions in a wireless network 有权
    无线网络中数据传输的方法和装置

    公开(公告)号:US08891548B2

    公开(公告)日:2014-11-18

    申请号:US13425814

    申请日:2012-03-21

    摘要: A method and apparatus for data transmissions in a wireless network are disclosed. A first device may send a first frame to a second device including information regarding a number of pending data frames to be transmitted from the first device to the second device. The first device receives an acknowledgement frame including a number of approved data frames for transmission from the first device to the second device. The first device then may send a plurality of data frames without performing the contention-based channel access procedure in response to the acknowledgement frame. The first device may send a first frame to a second device for requesting data frames that are pending at the second device. The first device receives an acknowledgement frame including a number of pending and approved data frames. The first device may receive a plurality of data frames in response to the acknowledgement frame.

    摘要翻译: 公开了一种用于无线网络中的数据传输的方法和装置。 第一设备可以向第二设备发送第一帧,包括关于要从第一设备发送到第二设备的待处理数据帧的数量的信息。 第一设备接收包括许多批准数据帧的确认帧,用于从第一设备传输到第二设备。 然后,响应于确认帧,第一设备可以发送多个数据帧,而不执行基于竞争的信道接入过程。 第一设备可以向第二设备发送第一帧以请求在第二设备处待处理的数据帧。 第一设备接收包括许多未决和批准的数据帧的确认帧。 响应于确认帧,第一设备可以接收多个数据帧。

    Modulation detection in a SAIC operational environment
    10.
    发明授权
    Modulation detection in a SAIC operational environment 有权
    上汽运行环境中的调制检测

    公开(公告)号:US07697638B2

    公开(公告)日:2010-04-13

    申请号:US11205450

    申请日:2005-08-16

    IPC分类号: H04L27/22

    摘要: Blind modulation detection in a receiver of a wireless communication device calculates error energies for PSK and GMSK based on differences between a received training sequence signal and synthesized training signals generated from PSK and GMSK channel estimations and a known training sequence phase rotated by 3π/8 and π/2 per symbol, respectively. A highly reliable modulation detection in a Single Antenna Interference Cancellation (SAIC) operational environment is achieved by a dual comparison of a total energy value of the received signal and the two error energies. PSK is determined if the PSK error energy value is found to be lower than both the GMSK error energy value and the total energy value by predetermined thresholds; otherwise the modulation type is determined to be GMSK.

    摘要翻译: 无线通信设备的接收机中的盲调制检测基于接收到的训练序列信号和从PSK和GMSK信道估计产生的合成训练信号之间的差异以及旋转了3& / 8的已知训练序列相位来计算PSK和GMSK的误差能量 和&pgr / /每个符号。 通过对接收信号的总能量值和两个误差能量进行双重比较,可以实现单天线干扰消除(SAIC)操作环境中的高度可靠的调制检测。 如果发现PSK误差能量值低于GMSK误差能量值和总能量值两个预定阈值,则确定PSK; 否则调制类型被确定为GMSK。