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    System and method for measuring channel quality in a communication system
    21.
    发明公开
    System and method for measuring channel quality in a communication system 审中-公开
    系统和Verfahren zurKanalqualitätsmessung在einem Kommunikationssystem

    公开(公告)号：EP0944201A2

    公开(公告)日：1999-09-22

    申请号：EP99301794.6

    申请日：1999-03-09

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Balachandran, Krishna ,  Kadaba, Srinivas R. ,  Nanda, Sanjiv ,  Ejzak, Richard P.

    IPC: H04L1/20

    CPC classification number: H04L1/0015 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0054 ,  H04L1/006 ,  H04L1/12 ,  H04L1/20 ,  H04W36/30 ,  H04W72/08

    Abstract: A system and method to measure channel quality in terms of signal to interference plus noise ratio for the transmission of coded signals over fading channels in a communication system. A Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure for coherent and non-coherent transmission schemes. This Euclidean distance metric is filtered in order to smooth out short term variations. The filtered or averaged metric is a reliable channel quality measure which remains consistent across different coded modulation schemes speeds. The filtered metric is mapped to the signal to interference plus noise ratio per symbol using a threshold based scheme. Use of this implicit signal to interference plus noise ratio estimate is used for the mobile assisted hand off in a cellular system, power control and data rate adaptation in the transmitter.

    Abstract translation: 一种用于在通信系统中通过衰落信道传输编码信号的信噪比加噪声比测量信道质量的系统和方法。 用于最大似然路径的维特比解码器度量用作相干和非相干传输方案的信道质量测量。 过滤欧几里得距离度量以平滑短期变化。 滤波或平均的度量是可靠的信道质量度量，其在不同的编码调制方案速度下保持一致。 使用基于阈值的方案将经滤波的度量映射到每个符号的信号与干扰加噪声比。 使用这种隐含信号对干扰加噪声比估计用于蜂窝系统中的移动辅助切换，发射机中的功率控制和数据速率适配。

    System and method for measuring channel quality information
    22.
    发明公开
    System and method for measuring channel quality information 有权
    System und VerfahrenfürKanal-Qualitätsmessung

    公开(公告)号：EP0899906A2

    公开(公告)日：1999-03-03

    申请号：EP98306614.3

    申请日：1998-08-18

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Balachandran, Krishna ,  Kadaba, Srinivas R. ,  Nanda, Sanjiv ,  Ejzak, Richard Paul

    IPC: H04L1/20

    CPC classification number: H04L1/006 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0054 ,  H04L1/12 ,  H04L1/20 ,  H04W36/30 ,  H04W72/08

    Abstract: In a system and method to measure channel quality in terms of signal to noise ratio for the transmission of coded signals over fading channels, a Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure. This Euclidean distance metric is filtered in order to smooth out short term variations. The filtered or averaged metric is a reliable channel quality measure which remains consistent across different coded modulation schemes and at different mobile speeds. The filtered metric is mapped to the signal to noise ratio per symbol using a threshold based scheme. Use of this implicit signal to noise ratio estimate is used for the mobile assisted handoff and data rate adaptation in the transmitter.

    Abstract translation: 在通过衰落信道传输编码信号的信噪比方面测量信道质量的系统和方法中，使用用于最大似然路径的维特比解码器度量作为信道质量度量。 过滤欧几里德距离度量以平滑短期变化。 滤波或平均度量是可靠的信道质量度量，其在不同编码调制方案和不同移动速度下保持一致。 使用基于阈值的方案将经滤波的度量映射到每个符号的信噪比。 使用这种隐式信噪比估计用于发射机中的移动辅助切换和数据速率适配。

    Burst based access and assignment method for providing real-time services
    26.
    发明公开
    Burst based access and assignment method for providing real-time services 有权
    基于突发的访问和分配方法提供实时服务

    公开(公告)号：EP1758277A3

    公开(公告)日：2007-04-18

    申请号：EP06023311.1

    申请日：2000-11-27

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Balachandran, Krishna ,  Nanda, Sanjiv ,  Samaras, Konstantinos

    IPC: H04B7/26 ,  H04Q7/28

    CPC classification number: H04W74/08 ,  H04B7/2643 ,  H04W72/0406

    Abstract: A method and system for reducing delay in wireless communications by use of a burst based access and assignment system. The method for setting up a communication channel uses short burst(s) (essentially a slot of a time frame). Time is saved by keeping the uplink and downlink channels flexible and independent of each other. Thus less time is used trying to fit all requests and responses into constrained choices as in previous protocols. The result is less delay to the mobile user and greater usage density for the wireless service provider.

    Abstract translation: 一种通过使用基于突发的接入和分配系统来减少无线通信中的延迟的方法和系统。 用于建立通信信道的方法使用短脉冲串（基本上是时间帧的时隙）。 通过保持上行链路和下行链路信道的灵活性和彼此独立性来节省时间。 因此，使用更少的时间来尝试将所有请求和响应都纳入先前协议中的受限选择中。 其结果是移动用户的延迟更少，无线服务提供商的使用密度更高。

    Methods for triggering registration to a wireless network and paging therefrom
    29.
    发明公开
    Methods for triggering registration to a wireless network and paging therefrom 有权
    触发向无线网络注册并从中进行寻呼的方法

    公开(公告)号：EP1523136A3

    公开(公告)日：2005-04-20

    申请号：EP04255978.1

    申请日：2004-09-29

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Balachandran, Krishna ,  Budka, Kenneth C. ,  Das, Arnab ,  Kang, Joseph H.

    IPC: H04L12/56 ,  H04Q7/38

    CPC classification number: H04W60/04

    Abstract: A method of triggering registration of a mobile station in a network supporting broadcast multicast services employs registration triggers based on flow conditions and frequency conditions. For example, a registration message may be generated based on a change in frequency, from a first frequency to a second frequency, that is monitored by the mobile station. If the second frequency is not known to the network based on flow identifier information previously registered by the mobile station with the network, a registration to the network is triggered. By sending a registration, the network may page a mobile station on a single, given frequency, since the registration message indicates the mobile station's presence on that given frequency.

    Abstract translation: 在支持广播多播服务的网络中触发移动站的注册的方法采用基于流条件和频率条件的注册触发。 例如，可以基于由移动台监视的从第一频率到第二频率的频率变化来生成注册消息。 如果基于先前由移动台在网络上注册的流标识符信息，网络未知第二频率，则触发对网络的注册。 通过发送注册，网络可以在单个给定频率上寻呼移动台，因为注册消息指示移动台在该给定频率上的存在。

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