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    • 72. 发明申请
    • PREAMBLE BASED UPLINK POWER CONTROL FOR LTE
    • 用于LTE的基于前置的UPLINK功率控制
    • US20150334661A1
    • 2015-11-19
    • US14812996
    • 2015-07-29
    • QUALCOMM Incorporated
    • Durga Prasad MalladiJuan Montojo
    • H04W52/10H04W72/14H04L5/00H04W52/08H04W52/44
    • H04W52/10H04L5/0048H04W52/08H04W52/44H04W72/14H04W88/08
    • Systems and methodologies are described that facilitate utilizing power control preambles with closed loop power control techniques in a wireless communication environment. An uplink grant can be transferred over a downlink (e.g., a first uplink grant after uplink inactivity), and a power control preamble can be sent over an uplink in response to the uplink grant. According to an example, transmission of the power control preamble can be explicitly scheduled and/or implicitly scheduled. The power control preamble can be transmitted at a power level determined by an access terminal utilizing an open loop power control mechanism. A base station can analyze the power control preamble and generate a power control command based thereupon to correct the power level employed by the access terminal. The access terminal can thereafter utilize the power control command to adjust the power level for uplink data transmission.
    • 描述了在无线通信环境中便利利用具有闭环功率控制技术的功率控制前导码的系统和方法。 可以通过下行链路(例如,上行链路不活动之后的第一上行链路许可)来传送上行链路许可,并且响应于上行链路许可,可以通过上行链路发送功率控制前导码。 根据一个示例,可以明确地调度和/或隐式调度功率控制前导码的传输。 功率控制前置码可以利用开环功率控制机制由接入终端确定的功率电平进行传输。 基站可以分析功率控制前同步码,并基于此来生成功率控制命令,以便校正接入终端所采用的功率电平。 接入终端此后可利用功率控制命令来调整上行数据传输的功率电平。
    • 75. 发明授权
    • Transmitting and receiving device and method for continuous outer-loop power control while in DTX mode in a CDMA mobile communication system
    • 用于在CDMA移动通信系统中以DTX模式进行连续外环功率控制的发射和接收装置和方法
    • US06950632B1
    • 2005-09-27
    • US09584047
    • 2000-05-30
    • Yu-Suk YunSoon-Young YoonSeung-Joo Maeng
    • Yu-Suk YunSoon-Young YoonSeung-Joo Maeng
    • H04B1/76H04B7/005H04W52/08H04W52/12H04W52/20H04W52/26H04W52/28H04W52/36H04W52/44H04B1/00
    • H04W52/287H04W52/08H04W52/12H04W52/20H04W52/26H04W52/36H04W52/44
    • A device and method for continuous outer-loop power control on a physical channel which transmits only power control bits and no data while in discontinuous transmission (DTX) mode in a CDMA mobile communication system is disclosed. In the power controlling device according to one aspect of the present invention, a frame error detector detects an error from a frame of predetermined length and generates an error signal indicating whether an error has been generated. A closed-loop power controller compares a threshold with the signal-to-noise ratio (SNR) in each power control group (PCG) in a plurality of periods of the frame and generates power control information according to the comparison result. An outer-loop power controller increases the threshold in order to generate power control information that commands a power increase in response to an error signal indicating the existence of a frame error, and decreases the threshold in order to generate power control information that commands a power decrease in response to an error signal indicating the absence of a frame error. An offset controlling unit, which is connected to the outer-loop power controller, receives gating information about the gated transmission of data in a frame at a predetermined rate, and generates an offset signal, which indicates an offset corresponding to a changed gating rate if the gating rate is changed.
    • 公开了一种用于在CDMA移动通信系统中在不连续传输(DTX)模式下仅发送功率控制位和无数据的物理信道上的连续外环功率控制的装置和方法。 在根据本发明的一个方面的功率控制装置中,帧错误检测器从预定长度的帧检测错误,并产生指示是否已经产生错误的错误信号。 闭环功率控制器将阈值与帧的多个周期中的每个功率控制组(PCG)中的信噪比(SNR)进行比较,并根据比较结果生成功率控制信息。 外环功率控制器增加阈值,以产生响应于指示帧错误存在的错误信号来命令功率增加的功率控制信息,并且减小阈值以便产生命令功率的功率控制信息 响应于指示不存在帧错误的错误信号减小。 连接到外环功率控制器的偏移控制单元以预定速率接收关于帧中的数据门控传输的门控信息,并且生成偏移信号,其指示对应于改变的门控速率的偏移量 选通率发生变化。