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    • 4. 发明授权
    • Radio link management based on retransmission request performance
    • 基于重传请求性能的无线链路管理
    • US07469146B2
    • 2008-12-23
    • US10889554
    • 2004-07-12
    • Anthony C. K. SoongTao WuThawatt GopalYoung C. YoonShiau-He Shawn Tsai
    • Anthony C. K. SoongTao WuThawatt GopalYoung C. YoonShiau-He Shawn Tsai
    • H04Q7/20
    • H04W28/18H04L1/0625H04W52/16H04W52/325H04W52/36H04W52/40
    • A wireless communication network receives packet data transmissions from a mobile station, tracks the occurrence of retransmission requests sent to the mobile station responsive thereto, and modifies the radio link assignments for the mobile station based at least in part on said tracking. For example, a base station controller may be configured to manage the active set of a mobile station based on the number and/or frequency of NACK messages sent by the radio base stations in the mobile station's active set(s) responsive to packet data transmissions from the mobile station. The ACK/NACK response of a radio base station to mobile station transmissions may be used to detect link imbalance, identify poor reverse link channels, etc. The base station controller can add or change radio links based on the ACK/NACK response to improve reverse link performance, trigger voice call handoff, correct link imbalance, etc.
    • 无线通信网络从移动站接收分组数据传输,响应于此而跟踪发送到移动站的重传请求的发生,并且至少部分地基于所述跟踪修改移动台的无线电链路分配。 例如,基站控制器可以被配置为基于移动台的活动组中的无线电基站响应于分组数据传输发送的NACK消息的数量和/或频率来管理移动台的活动集合 从移动台。 无线电基站对移动台传输的ACK / NACK响应可用于检测链路不平衡,识别差的反向链路信道等。基站控制器可以基于ACK / NACK响应来添加或改变无线电链路以改善反向 链路性能,触发语音呼叫切换,链路不平衡等。
    • 5. 发明授权
    • Secondary link power control in a wireless communication network
    • 无线通信网络中的二次链路功率控制
    • US07738901B2
    • 2010-06-15
    • US10788568
    • 2004-02-27
    • Shiau-He Shawn TsaiYoung C. YoonTao WuAnthony C. K. Soong
    • Shiau-He Shawn TsaiYoung C. YoonTao WuAnthony C. K. Soong
    • H04B7/00
    • H04W28/18H04W52/16H04W52/325H04W52/36H04W52/40
    • A communication transceiver transmits a power-controlled first signal responsive to received power control commands and transmits one or more additional signals at variable power gains relative to the transmit power of the first signal based on reception quality feedback received for the additional signals. Thus, a mobile station may transmit a traffic channel at a variable power gain relative to its pilot signal power and vary that gain responsive to reception quality feedback received by it for the traffic signal. Of course, the mobile station may float more than one traffic channel using variable gains and may use different variable gains for each one. Further, the mobile station may float one or more non-pilot channels relative to the pilot or relative to another channel, while transmitting one or more fixed gain channels. Similar variable power gain may be employed at network base stations for forward link signals.
    • 通信收发机响应于接收到的功率控制命令发送功率受控的第一信号,并基于为附加信号接收的接收质量反馈,以相对于第一信号的发射功率的可变功率增益发射一个或多个附加信号。 因此,移动台可以以相对于其导频信号功率的可变功率增益来发送业务信道,并响应于其为业务信号收到的接收质量反馈来改变该增益。 当然,移动台可以使用可变增益浮动多于一个业务信道,并且可以为每一个使用不同的可变增益。 此外,移动台可以在发送一个或多个固定增益信道的同时相对于导频或相对于另一个信道漂浮一个或多个非导频信道。 在网络基站可以采用类似的可变功率增益用于前向链路信号。
    • 7. 发明授权
    • Power control for reverse packet data channel in CDMA systems
    • CDMA系统中反向分组数据信道的功率控制
    • US08054775B2
    • 2011-11-08
    • US11867368
    • 2007-10-04
    • Anthony C. K. SoongSeong-Jun OhShiau-He Shawn TsaiYoung C. Yoon
    • Anthony C. K. SoongSeong-Jun OhShiau-He Shawn TsaiYoung C. Yoon
    • H04B7/185
    • H04W52/267H04L1/0002H04L1/0025H04L1/0026H04L1/0039H04L1/0081H04L1/08H04L1/20H04W52/146H04W52/16H04W52/20H04W52/325
    • A method of reverse link power control for a reverse packet data channel in a wireless communication system allows a mobile station to autonomously change its data transmission rate. The mobile station transmits packet data over a reverse packet data channel having a data rate variant transmit power level that varies based on a transmit data rate on the packet data channel. The mobile station further transmits control signals over a reverse control channel associated with the reverse packet data channel. The transmit power level of the reverse control channel is such that the transmit power level does not vary with the transmit data rate on the packet data channel. The radio base station measures the strength of the received signals on the reverse control channel, compares the measured strength to a power control set point, and generates a power control signal responsive to the comparison of the control signal to the power control set point.
    • 无线通信系统中的反向分组数据信道的反向链路功率控制方法允许移动台自主地改变其数据传输速率。 该移动站通过具有基于分组数据信道上的发送数据速率而变化的数据速率变化发射功率电平的反向分组数据信道来发送分组数据。 移动台还通过与反向分组数据信道相关联的反向控制信道来发送控制信号。 反向控制信道的发射功率电平使得发射功率电平不随分组数据信道上的发送数据速率而变化。 无线电基站测量反向控制信道上的接收信号的强度,将测得的强度与功率控制设定点进行比较,并根据控制信号与功率控制设定点的比较产生功率控制信号。
    • 8. 发明授权
    • Forward link transmit power control based on observed command response
    • 基于观察命令响应的前向链路发射功率控制
    • US07346314B2
    • 2008-03-18
    • US10768560
    • 2004-01-30
    • Shiau-He Shawn TsaiAnthony C. K. SoongYoung C. Yoon
    • Shiau-He Shawn TsaiAnthony C. K. SoongYoung C. Yoon
    • H04B1/00
    • H04W52/322H04W52/12H04W52/16H04W52/325H04W52/36
    • A method and apparatus to provide a deterministic power control mechanism for the transmission of mobile station power control commands based on transmitting non-power control commands for which mobile stations exhibit deterministic, observable responses at related transmit powers, e.g., at the same power. For example, a wireless network base station may adjust the target used for sending power control commands to a given mobile station by observing whether that mobile station correctly responds to rate control or retransmit control commands sent at the same transmit power. The mobile station's response (or non-response) to such non-power control commands is readily observable and can be taken as an indication of whether the power target is sufficient for current radio conditions. Although not so limited, this approach may be particularly beneficial where non-power control commands are sent along with the power commands on a sub-channel of a common power control channel.
    • 一种提供确定性功率控制机制的方法和装置,用于基于传输非功率控制命令来发送移动台功率控制命令,所述非功率控制命令用于以相同的功率在相关的发射功率下显示出确定性的,可观测的响应。 例如,无线网络基站可以通过观察该移动台是否正确地响应速率控制或以相同发射功率发送的重发控制命令来调整用于向给定移动台发送功率控制命令的目标。 移动台对这种非功率控制命令的响应(或不响应)是容易观察到的,并且可以被视为当前无线电条件下功率目标是否足够的指示。 尽管没有这样的限制,但是当非功率控制命令与公共功率控制信道的子信道上的功率命令一起发送时,该方法可能是特别有利的。
    • 10. 发明授权
    • Signal-to-noise ratio estimation of CDMA signals
    • CDMA信号的信噪比估计
    • US07313167B2
    • 2007-12-25
    • US10260650
    • 2002-09-30
    • Young C. YoonShiau-He Shawn Tsai
    • Young C. YoonShiau-He Shawn Tsai
    • H04B1/707H04B1/10H04Q1/20
    • H04B1/7097H04B17/336H04L1/206H04W52/24
    • An improved approach to noise estimation permits, for example, tighter closed-loop power control in a wireless communication network with attendant improvements in transmit power efficiency and network capacity. In an exemplary embodiment, the received signal-to-noise ratio (SNR) of a data signal is estimated based on noise samples obtained from one or more other signals received in association with the data signal. In general, these associated signals are characterized by the receiver's ability to extract like valued samples from them, such that pairs of these like valued signal samples may be subtracted, thereby canceling their deterministic signal components and leaving only difference values representative of the non-deterministic noise components of the signal samples. Obtaining difference values from more than one associated signal increases the sample size of difference values used in noise estimation, thereby improving the statistical basis for noise estimation and, therefore, the accuracy of SNR estimation.
    • 改进的噪声估计方法允许例如在无线通信网络中更紧密的闭环功率控制,同时提高发射功率效率和网络容量。 在示例性实施例中,基于从与数据信号相关联接收的一个或多个其它信号获得的噪声样本来估计数据信号的接收信噪比(SNR)。 通常,这些相关联的信号的特征在于接收机从其中提取类似值样本的能力,使得可以减去这些像值信号样本的对,从而消除其确定性信号分量,并且仅留下代表非确定性的差值 信号样本的噪声分量。 从多个相关联信号中获取差值增加了噪声估计中使用的差值的采样大小,从而改善了噪声估计的统计基础,从而提高了SNR估计的准确性。