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    • 2. 发明授权
    • Methods and apparatus for interfrequency handoff in a wireless communication system
    • 用于无线通信系统中的接口切换的方法和装置
    • US06252861B1
    • 2001-06-26
    • US09048626
    • 1998-03-26
    • Neil E. BernsteinXiao C. BernsteinWen-Yi KuoMartin H. MeyersXiao WangCarl F. Weaver
    • Neil E. BernsteinXiao C. BernsteinWen-Yi KuoMartin H. MeyersXiao WangCarl F. Weaver
    • H04Q700
    • H04W36/30H04W36/14
    • Inter-frequency handoffs in a CDMA or other wireless communication system are controlled using a noise-limited coverage trigger metric which is able to distinguish between same-frequency cell boundaries and other-frequency cell boundaries in the system. The trigger metric may be generated as a function of an average signal-to-noise measure for pilot signals received at a mobile station of the system and a linear sum of the signal-to-noise measures. The signal-to-noise measures may be generated in the mobile station and included in messages transmitted from the mobile station to one or more base stations of the system. The trigger metric is used to control a handoff from a current frequency to a new frequency in an ongoing call. The trigger metric may alternatively be based on a measure of mobile receive power alone. Other aspects of the invention reduce unnecessary searching for a new frequency and decrease the likelihood of “ping-ponging” from a current frequency to a new frequency by providing additional checks in the handoff process. For example, receive power and pilot signal-to-noise measures may be generated at a mobile station for both current and new frequencies. The mobile station then continues to operate at the current frequency as long as certain predetermined threshold conditions based on the measures are satisfied.
    • CDMA或其他无线通信系统中的频率间切换是使用能够区分系统中的同频小区边界和其它频率小区边界的噪声限制覆盖触发度量来控制的。 可以根据在系统的移动台处接收的导频信号的平均信噪比测量值和信噪比测量的线性和来产生触发度量。 信号噪声测量可以在移动台中产生,并且包括在从移动站发送到系统的一个或多个基站的消息中。 触发度量用于控制正在进行的呼叫中从当前频率到新频率的切换。 触发度量可以替代地基于单独的移动接收功率的量度。 本发明的其他方面通过在切换过程中提供额外的检查来减少对新频率的不必要的搜索并且减少从当前频率到新频率的“乒乓”的可能性。 例如,可以在移动台处为当前和新频率产生接收功率和导频信号噪声测量。 只要满足基于措施的某些预定阈值条件,移动台就继续以当前频率工作。
    • 4. 发明授权
    • Feedback control system for telecommunications systems
    • 电信系统反馈控制系统
    • US5978783A
    • 1999-11-02
    • US882436
    • 1997-06-25
    • Martin H. MeyersAhmed A. TarrafCarl F. Weaver
    • Martin H. MeyersAhmed A. TarrafCarl F. Weaver
    • H04L29/14G10L15/02H04B3/46H04B7/005H04B17/00H04M3/22G06E1/00G06E3/00G06F15/18G06G7/00
    • G10L19/26G10L15/02G10L25/69H04M3/22G10L25/30H04M2201/40
    • Telecommunications processing is applied to a reference signal to generate a signal under test. A fidelity measure is generated characterizing the fidelity of the signal under test relative to the reference signal. A control signal is generated from the fidelity measure, where the control signal is used as a feedback signal to adjust the telecommunications processing. In one embodiment, the reference signal is a speech signal and the signal under test is a decoded speech signal generated by encoding, transmitting, and decoding the reference speech signal. The fidelity signal is an average mean opinion score (MOS) and the control signal is used to control the speech decoding processing. For example, the speech decoding processing may involve a speech decoder followed by a post filter, and the control signal is the cut-off frequency of the post filter. Such an embodiment may be applied to real-time speech processing to adjust the speech decoding processing in the receiver of a telecommunications system that includes a speech encoder in a transmitter and a communications network. Intermittently, the transmitter encodes reference signals that are also known to the receiver. The receiver performs the processing of the present invention to update its speech decoding processing to optimize speech quality.
    • 电信处理被应用于参考信号以产生被测信号。 产生保真度量,表征被测信号相对于参考信号的保真度。 从保真度量产生控制信号,其中控制信号用作反馈信号以调整电信处理。 在一个实施例中,参考信号是语音信号,被测信号是通过对参考语音信号进行编码,发送和解码产生的解码语音信号。 保真度信号是平均意见得分(MOS),控制信号用于控制语音解码处理。 例如,语音解码处理可以包括语音解码器,后跟后置滤波器,并且控制信号是后置滤波器的截止频率。 这样的实施例可以应用于实时语音处理,以在包括发射机和通信网络中的语音编码器的电信系统的接收机中调整语音解码处理。 间歇地,发射机编码接收机也是已知的参考信号。 接收机执行本发明的处理以更新其语音解码处理以优化语音质量。
    • 5. 发明授权
    • Reverse link load control
    • 反向链路负载控制
    • US08219106B2
    • 2012-07-10
    • US11221329
    • 2005-09-07
    • Martin H. MeyersAlexandro SalvaraniCarl F. Weaver
    • Martin H. MeyersAlexandro SalvaraniCarl F. Weaver
    • H04W72/00H04W4/00H03C1/62
    • H04W72/0486H04W28/02H04W72/082
    • A reverse link load control strategy utilizes a total call load metric in place of a reverse signal strength indicator metric for managing reverse link resources. In a disclosed example, a load control module (40) measures the reverse signal strength indicator (62) and measures an active cell load (64) using known techniques. A relationship between the reverse signal strength indicator, the active cell load, an other cell load component and a jammer component provides the ability to determine the other cell load component and the jammer component. Once the other cell load component has been determined, a total call load based upon the active cell load component and the other cell load component provides a useful metric for allocating reverse link resources between existing users and for determining whether to allow a new user, for example.
    • 反向链路负载控制策略利用总呼叫负载度量来代替用于管理反向链路资源的反向信号强度指标度量。 在公开的示例中,负载控制模块(40)使用已知技术来测量反向信号强度指示器(62)并测量活动小区负载(64)。 反向信号强度指示符,活动小区负载,其他小区负载组件和干扰组件之间的关系提供了确定其他小区负载分量和干扰组件的能力。 一旦确定了另一小区负载组件,基于活动小区负载组件和另一个小区负载组件的总呼叫负载提供用于在现有用户之间分配反向链路资源并且用于确定是否允许新用户的有用度量 例。
    • 9. 发明授权
    • Methods of controlling data rate in wireless communications systems
    • 无线通信系统中数据速率控制的方法
    • US07583637B2
    • 2009-09-01
    • US10355140
    • 2003-01-31
    • Kin Nang LauYoujian LiuMartin H. MeyersSusan Wu Sanders
    • Kin Nang LauYoujian LiuMartin H. MeyersSusan Wu Sanders
    • H04W4/00
    • H04W28/22H04B2201/70703H04L1/0002H04L1/0007H04L47/10H04L47/14H04L47/29H04W24/00
    • In an aspect of the method, a received data packet is decoded in order to determine a packet error rate value, and an average package error value for N received data packets is updated based on the determined packet error rate value. The updated average packet error rate value is then compared against a threshold value and a data rate request is issued based on this comparison. In another aspect, a response to a transmitted data packet is received, the response being related to an average packet error rate value. The average packet error rate value is compared against a threshold and a data rate is modified based on the comparison. In each of the above aspects, a data rate control margin that is used to overcome channel estimate errors resulting from transmission delays may be dynamically adjusted, e.g., in real time, in order to optimize system resources.
    • 在该方法的一方面,对接收的数据分组进行解码,以确定分组错误率值,并且基于所确定的分组错误率值来更新N个接收到的数据分组的平均包误差值。 然后将更新的平均分组错误率值与阈值进行比较,并且基于该比较发布数据速率请求。 在另一方面,接收对发送的数据分组的响应,响应与平均分组错误率值相关。 将平均分组错误率值与阈值进行比较,并且基于比较修改数据速率。 在上述每个方面中,用于克服由传输延迟引起的信道估计误差的数据速率控制余量可以例如实时地动态地调整,以优化系统资源。