公开(公告)号：US07489901B2

公开(公告)日：2009-02-10

申请号：US10953552

申请日：2004-09-30

Applicant: Asif D. Gandhi ,  Matthijs A. Visser ,  Lily H. Zhu

Inventor： Asif D. Gandhi ,  Matthijs A. Visser ,  Lily H. Zhu

IPC: H04B15/00

CPC classification number: H04W48/06 ,  H04B17/345

Abstract: The present invention provides a method for dynamically estimating noise floor by continuously updating a noise floor value based on the noise floor value and sampled receive strength indications. In an alternative, the noise floor may be updated based on sampled receive strength indications and the reverse link loading value. In yet another alternative, the noise floor may be updated based on sampled receive strength indications and a range relative to a reference noise floor value.

Abstract translation: 本发明提供一种通过基于噪声本底值和采样的接收强度指示连续更新噪声本底值来动态估计噪声本底的方法。 或者，可以基于采样的接收强度指示和反向链路负载值来更新本底噪声。 在另一个替代方案中，可以基于采样的接收强度指示和相对于参考噪声本底值的范围来更新本底噪声。

公开(公告)号：US06968201B1

公开(公告)日：2005-11-22

申请号：US09413036

申请日：1999-10-06

Applicant: Asif D. Gandhi ,  Lei Song ,  Mathew Thomas ,  Stanley Vitebsky

Inventor： Asif D. Gandhi ,  Lei Song ,  Mathew Thomas ,  Stanley Vitebsky

IPC: H04B7/005 ,  H04B7/26 ,  H04Q7/20

CPC classification number: H04W52/146 ,  H04W52/24

Abstract: A system and a method for reverse link power control in a wireless communications network generates power adjust commands for mobiles being served by a network base station in a centralized manner by considering overall system performance when an increased interference condition is detected. In one implementation, a base station power control processor adopts a modified reverse inner loop power control (RILPC) and/or a reverse outer loop power control (ROLPC) algorithm when an increased interference condition is detected. According to the modified RILPC algorithm, a percentage of power-up adjust commands which would normally be generated when Eb/No measurements for served mobiles do not meet target Eb/No levels are converted to power down-adjust commands, thereby forcing some mobiles to reduce transmit power, at least temporarily, to constrain interference. When the increased interference condition persists, the percentage of power-up adjust commands which are converted to power-down commands may be changed. According to the modified ROLPC algorithm, the power control processor adjusts target Eb/No levels in a centralized manner based on an overall system state so that only a limited number of target Eb/No levels are allowed to increase when frame erasures occur. By preventing a percentage of target Eb/No level increases, at least temporarily, when frame erasures occur, a percentage of power up-adjust commands are avoided. Therefore, a similar effect to that achieved by the modified RILPC is achieved. In accordance with still a further implementation of the present invention, the modified RILPC algorithm may be used in combination with the modified ROLPC algorithm to provide greater resistance to increased interference conditions.

公开(公告)号：US20080102772A1

公开(公告)日：2008-05-01

申请号：US11586926

申请日：2006-10-26

Applicant: Asif D. Gandhi

Inventor： Asif D. Gandhi

IPC: H04B1/18

CPC classification number: H04W72/085 ,  H04L41/0896 ,  H04L43/0852 ,  H04L43/0888 ,  H04L47/10 ,  H04L47/11 ,  H04L47/14 ,  H04W28/12 ,  H04W72/087 ,  H04W92/12

Abstract: For carrier growth planning in a wireless network, one or more airlink data transfer performance indicators are measured for a plurality of wireless units at a number of different times. The performance indicators may include user perceived throughput (UPT) and transmission latency or delay, as relating to batch or burst data transfers. Typically, the performance indicators are measured as a function of airlink loading, such as percentage of busy slots. After one or more optional statistical procedures, such as averaging, the performance indicators are compared to one or more performance criterion. In the case of UPT, for example, the performance criteria may be a set or range of minimum desired UPT values, for different loading levels, as established by the service provider. If the performance indicators meet the criteria, this indicates against adding airlink bandwidth in an effort to improve performance. Otherwise, increased airlink bandwidth may be warranted.

Abstract translation: 对于无线网络中的载波增长规划，针对多个不同时间的多个无线单元测量一个或多个空中链路数据传输性能指示符。 性能指标可以包括用户感知吞吐量（UPT）和传输延迟或延迟，这与批处理或突发数据传输有关。 通常，性能指标作为空中链路负载的函数来测量，例如忙时隙的百分比。 在一个或多个可选的统计程序（例如平均）之后，将性能指标与一个或多个性能标准进行比较。 在UPT的情况下，例如，对于由服务提供商建立的不同负载水平，性能标准可以是对于期望的最小UPT值的设置或范围。 如果性能指标符合标准，则表示不要添加airlink带宽，以提高性能。 否则，可能需要增加空中链路带宽。