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：US06618598B1

公开(公告)日：2003-09-09

申请号：US09676179

申请日：2000-09-29

Applicant: Asif D Gandhi ,  Raafat E Kamel ,  Andrew R Kostic ,  Alexandro Salvarani ,  Mathew Thomas ,  Stanley Vitebsky ,  Carl Francis Weaver

Inventor： Asif D Gandhi ,  Raafat E Kamel ,  Andrew R Kostic ,  Alexandro Salvarani ,  Mathew Thomas ,  Stanley Vitebsky ,  Carl Francis Weaver

IPC: H04B700

CPC classification number: H04W52/50 ,  H04W52/16 ,  H04W52/26

Abstract: A method for determining the initial power to be allocated to a secondary channel having a desired data rate. An SNR setpoint is first calculated where such setpoint is based on the SNR setpoint of the associated primary channel and system offset values. The initial power is then calculated based on the calculated setpoint.

Abstract translation: 一种用于确定要分配给具有期望数据速率的辅助信道的初始功率的方法。 首先计算SNR设定点，其中该设定点基于相关联的主通道和系统偏移值的SNR设定点。 然后根据计算的设定值计算初始功率。

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。

公开(公告)号：US07565152B2

公开(公告)日：2009-07-21

申请号：US10632065

申请日：2003-07-31

Applicant: Asif D Gandhi ,  Frances Jiang ,  Mathew Thomas ,  Stanley Vitebsky

Inventor： Asif D Gandhi ,  Frances Jiang ,  Mathew Thomas ,  Stanley Vitebsky

IPC: H04W72/00

CPC classification number: H04W28/12 ,  H04W74/08

Abstract: A method of wireless communication over the reverse link. The method may include evaluating a reverse link loading. This evaluation step may involve examining at least two resources associated with reverse link loading within a first time period. Thereafter, a message is broadcast containing information regarding the availability of resources. This message is generated in response to the evaluated reverse link loading. This availability of resources message may correspond with an overload condition, increasing a number of active connections, decreasing the number of active connections, increasing an available transmit rate, maintaining the available transmit rate and/or decreasing the available transmit rate. In one example, the availability of resources message comprises a reverse activity bit.

Abstract translation: 一种通过反向链路进行无线通信的方法。 该方法可以包括评估反向链路负载。 该评估步骤可以包括在第一时间段内检查与反向链路加载相关联的至少两个资源。 此后，广播包含关于资源可用性的信息的消息。 响应于所评估的反向链路加载而产生该消息。 资源消息的这种可用性可以对应于过载状况，增加活动连接的数量，减少活动连接的数量，增加可用的传输速率，维持可用传输速率和/或减小可用传输速率。 在一个示例中，资源消息的可用性包括反向活动比特。

公开(公告)号：US07228134B2

公开(公告)日：2007-06-05

申请号：US10463995

申请日：2003-06-17

Applicant: Asif D Gandhi ,  Mathew Thomas ,  Lily H Zhu

Inventor： Asif D Gandhi ,  Mathew Thomas ,  Lily H Zhu

IPC: H04Q7/20

CPC classification number: H04W48/06 ,  H04W52/50 ,  H04W74/002 ,  H04W74/0833

Abstract: When an overload condition is determined to exist at a base station in a wireless communications system based on the number of unsuccessful access attempts to access the system relative to the successful access attempts to access the system, the base station broadcasts a message to each mobile terminal within its coverage area that changes at least one access probe-related parameter associated with at least one of: the number, the frequency, and the power intensity of the access probes made by these mobile terminals as they attempt to establish access to the wireless network. By so limiting these access probes in some manner when an overload condition is present, the interference caused on the reverse link by many mobile terminals attempting access is reduced.

Abstract translation: 当基于相对于访问系统的成功访问尝试访问系统的不成功访问次数而确定在无线通信系统中的基站处存在过载状况时，基站向每个移动终端广播消息 在其覆盖区域内改变至少一个接入探针相关参数，其与以下至少一个相关联：当这些移动终端试图建立对无线网络的接入时，由这些移动终端制造的接入探测器的数量，频率和功率强度 。 通过在存在过载条件的情况下以某种方式限制这些接入探测器，减少了尝试接入的许多移动终端在反向链路上引起的干扰。