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    • 4. 发明申请
    • SUPPORTING VOICE FOR FLEXIBLE BANDWIDTH SYSTEMS
    • 支持灵活的带宽系统的语音
    • US20130148520A1
    • 2013-06-13
    • US13491510
    • 2012-06-07
    • Soumya DASOzgur DURALEdwin C. ParkBongyong SONGSamir Salib SOLIMANYuheng HUANG
    • Soumya DASOzgur DURALEdwin C. ParkBongyong SONGSamir Salib SOLIMANYuheng HUANG
    • H04J13/00
    • H04J13/0077G10L19/16H04W52/12H04W52/20H04W72/00
    • Methods, systems, and devices for supporting voice communications in a wireless communications system are provided. Some embodiments utilize multiple code channels to transmit the voice frames. These embodiments include parallel multi-code embodiments, offset multi-code embodiments, and multi-user multi-code embodiments. Some embodiments utilize flexible carrier bandwidths systems that may utilize portions of spectrum that may not be big enough to fit a normal bandwidth waveform. Some embodiments transmit and receive a subset of subframes of voice frames received over flexible bandwidth code channels. In some embodiments, a subset of subframes based on a flexible bandwidth scaling factor of one or more flexible bandwidth code channels is transmitted. The receiver may decode the voice frame based on the received subset of subframes. An outer loop power control set-point may be adjusted to provide a predetermined frame error rate based on the number of transmitted subframes.
    • 提供了用于在无线通信系统中支持语音通信的方法,系统和设备。 一些实施例利用多个代码信道来发送语音帧。 这些实施例包括并行多代码实施例,偏移多代码实施例和多用户多代码实施例。 一些实施例使用灵活的载波带宽系统,其可以利用可能不够大以适应正常带宽波形的频谱部分。 一些实施例发送和接收在灵活的带宽码信道上接收的语音帧的子帧子集。 在一些实施例中,发送基于一个或多个柔性带宽码信道的灵活带宽缩放因子的子帧子集。 接收机可以基于所接收的子帧子集对语音帧进行解码。 可以调整外部环路功率控制设定点,以基于发送的子帧的数量来提供预定的帧错误率。
    • 7. 发明授权
    • Supporting voice for flexible bandwidth systems
    • 支持灵活带宽系统的语音
    • US09001679B2
    • 2015-04-07
    • US13491510
    • 2012-06-07
    • Soumya DasOzgur DuralEdwin C. ParkBongyong SongSamir Salib SolimanYuheng Huang
    • Soumya DasOzgur DuralEdwin C. ParkBongyong SongSamir Salib SolimanYuheng Huang
    • H04J13/10H04W74/00H04W28/02H04L12/801H04J13/00H04W72/00G10L19/16H04W52/12H04W52/20
    • H04J13/0077G10L19/16H04W52/12H04W52/20H04W72/00
    • Methods, systems, and devices for supporting voice communications in a wireless communications system are provided. Some embodiments utilize multiple code channels to transmit the voice frames. These embodiments include parallel multi-code embodiments, offset multi-code embodiments, and multi-user multi-code embodiments. Some embodiments utilize flexible carrier bandwidths systems that may utilize portions of spectrum that may not be big enough to fit a normal bandwidth waveform. Some embodiments transmit and receive a subset of subframes of voice frames received over flexible bandwidth code channels. In some embodiments, a subset of subframes based on a flexible bandwidth scaling factor of one or more flexible bandwidth code channels is transmitted. The receiver may decode the voice frame based on the received subset of subframes. An outer loop power control set-point may be adjusted to provide a predetermined frame error rate based on the number of transmitted subframes.
    • 提供了用于在无线通信系统中支持语音通信的方法,系统和设备。 一些实施例利用多个代码信道来发送语音帧。 这些实施例包括并行多代码实施例,偏移多代码实施例和多用户多代码实施例。 一些实施例使用灵活的载波带宽系统,其可以利用可能不够大以适应正常带宽波形的频谱部分。 一些实施例发送和接收在灵活的带宽码信道上接收的语音帧的子帧子集。 在一些实施例中,发送基于一个或多个柔性带宽码信道的灵活带宽缩放因子的子帧子集。 接收机可以基于所接收的子帧子集对语音帧进行解码。 可以调整外部环路功率控制设定点,以基于发送的子帧的数量来提供预定的帧错误率。
    • 9. 发明授权
    • Method and apparatus for utilizing a second receiver to establish time and frequency
    • 利用第二接收机建立时间和频率的方法和装置
    • US08254355B2
    • 2012-08-28
    • US12501298
    • 2009-07-10
    • Edwin C. Park
    • Edwin C. Park
    • H04J3/06
    • H04W56/00H04J3/0638H04J3/0641
    • Apparatus and methods for synchronizing a network element (e.g. access points, femtocells, etc.) to a master network (such as a cellular network) to provide accurate frequency and/or time references for their internal systems. In one embodiment, the network element utilizes a dedicated receiver (or transceiver) to receive timing information from the master network. The implementation of the dedicated receiver is advantageous for cost and simplicity reasons. Furthermore, the timing or frequency information, as received from the master network, is used to correct the network element's internal timing. In addition, the network element's internal timing can operate in open-loop mode, if no master network can be found, thereby allowing for the device to continue providing service to network users. Additionally, a dedicated receiver can also receive information (e.g. location, SID, NID, SSID, etc.) local to the network element, such information may be useful or required for seamless operation within the master network.
    • 将网络元件(例如接入点,毫微微小区等)同步到主网络(例如蜂窝网络)以便为其内部系统提供准确的频率和/或时间参考的装置和方法。 在一个实施例中,网络元件利用专用接收机(或收发器)从主网络接收定时信息。 专用接收机的实现对于成本和简单性的原因是有利的。 此外,从主网络接收到的定时或频率信息用于校正网元的内部时序。 另外,如果不能找到主网络,网元的内部时序可以在开环模式下工作,从而允许设备继续向网络用户提供服务。 此外,专用接收机还可以接收网络单元本地的信息(例如,位置,SID,NID,SSID等),这样的信息对于主网络内的无缝操作可能是有用的或需要的。
    • 10. 发明授权
    • Pulse density modulator with improved pulse distribution
    • 具有改善脉冲分布的脉冲密度调制器
    • US06281822B1
    • 2001-08-28
    • US09322539
    • 1999-05-28
    • Edwin C. Park
    • Edwin C. Park
    • H03M166
    • H03M7/3006G06F1/025H03M7/3031
    • A pulse density modulator generates output pulses that are optimized as to their even distribution over time. More particularly, the invention represents parallel or serial digital input signals as serial binary output signals, where the binary output pulses are evenly spaced over time to the greatest extent possible. The output signal includes a pattern that repeats during successive “cycles.” The number of pulses in each cycle varies in proportion to the magnitude of the digital input signal. When a digital input signal is provided to an accumulator, the accumulator repeatedly updates a current N-bit sum value by adding the digital input signal thereto. According to this computation, the accumulator either (1) provides a first prescribed signal on a carry output if the current sum cannot be expressed in N bits, or (2) provides a different prescribed signal on the carry output if the current sum can be expressed in N bits. The carry output provides a serial binary output having 2N bits in each cycle. The accumulator may be used as a digital-to-analog converter by routing the carry output to an analog filter. Alternatively, the digital output of the accumulator may be used to provide a trigger signal of repeating, evenly spaced pulses.
    • 脉冲密度调制器产生针对其随时间均匀分布而优化的输出脉冲。 更具体地,本发明将并行或串行数字输入信号表示为串行二进制输出信号,其中二进制输出脉冲在最大程度上随时间均匀地间隔开。 输出信号包括在连续“循环”期间重复的图案。 每个周期中的脉冲数量与数字输入信号的幅度成比例地变化。 当向累加器提供数字输入信号时,累加器通过将数字输入信号相加来重复地更新当前的N位和值。 根据该计算,如果电流和不能以N位表示,则(1)在进位输出上提供第一规定信号,或者(2)如果电流和可以在进位输出上提供不同的规定信号 以N位表示。 进位输出在每个周期中提供具有2N位的串行二进制输出。 累加器可以通过将进位输出路由到模拟滤波器而用作数模转换器。 或者,累加器的数字输出可以用于提供重复均匀间隔的脉冲的触发信号。