公开(公告)号：US06968201B1

公开(公告)日：2005-11-22

申请号：US09413036

申请日：1999-10-06

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

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

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

CPC分类号： H04W52/146 ,  H04W52/24

摘要： 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：US07565152B2

公开(公告)日：2009-07-21

申请号：US10632065

申请日：2003-07-31

申请人： Asif D Gandhi ,  Frances Jiang ,  Mathew Thomas ,  Stanley Vitebsky

发明人： Asif D Gandhi ,  Frances Jiang ,  Mathew Thomas ,  Stanley Vitebsky

IPC分类号： H04W72/00

CPC分类号： H04W28/12 ,  H04W74/08

摘要： 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.

摘要翻译： 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：US06618598B1

公开(公告)日：2003-09-09

申请号：US09676179

申请日：2000-09-29

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

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

IPC分类号： H04B700

CPC分类号： H04W52/50 ,  H04W52/16 ,  H04W52/26

摘要： 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.

摘要翻译： 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：US06944449B1

公开(公告)日：2005-09-13

申请号：US09580648

申请日：2000-05-30

申请人： Asif Dawoodi Gandhi ,  Joe Huang ,  Marc Benedict Ibanez ,  Lei Song ,  Mathew Thomas ,  Stanley Vitebsky

发明人： Asif Dawoodi Gandhi ,  Joe Huang ,  Marc Benedict Ibanez ,  Lei Song ,  Mathew Thomas ,  Stanley Vitebsky

IPC分类号： H04W72/08 ,  H04Q7/38

CPC分类号： H04W72/085

摘要： A method for controlling access of a subscriber station to a wireless communications system facilitates the maintenance of a performance target of the reverse link and desired geographic coverage of the reverse link. The method for controlling access of a subscriber station to a wireless communications system includes measuring a first performance indicator and a second performance indicator for a reverse link associated with a subscriber station seeking access to a wireless communications system. A blocking threshold value is established based upon the measured second performance indicator and may be adjusted to allow more or less blocking based on any additional metrics that characterize the performance of the current subscriber stations. The decision to grant or deny access of the subscriber station to the wireless communications system is determined based on a comparison of the measured first performance indicator to the established blocking threshold value.

摘要翻译： 用于控制用户台对无线通信系统的接入的方法有助于维护反向链路的性能目标和反向链路的所需地理覆盖。 用于控制用户站对无线通信系统的接入的方法包括测量与寻求接入无线通信系统的用户站相关联的反向链路的第一性能指示符和第二性能指示符。 基于测量的第二性能指标建立阻塞阈值，并且可以基于表征当前用户站的性能的任何附加度量来调整以允许更多或更少的阻塞。 基于所测量的第一性能指示符与建立的阻塞阈值的比较来确定向用户站授予或拒绝对无线通信系统的访问的决定。

公开(公告)号：US06829468B2

公开(公告)日：2004-12-07

申请号：US09797708

申请日：2001-03-05

申请人： Asif Dawoodi Gandhi ,  Marc Benedict Ibanez ,  Lei Song ,  Mathew Thomas ,  Stanley Vitebsky

发明人： Asif Dawoodi Gandhi ,  Marc Benedict Ibanez ,  Lei Song ,  Mathew Thomas ,  Stanley Vitebsky

IPC分类号： H04B100

CPC分类号： H04W52/367 ,  H04W52/228

摘要： In a method for minimizing reverse link power control overshoot in a wireless communications system, the output power of a mobile station is detected to determine whether it falls outside a dynamic range of the mobile station. If outside the dynamic range, a new output power falling within the dynamic range is calculated and set, and the mobile station is instructed to transmit at the new output power.

摘要翻译： 在无线通信系统中用于最小化反向链路功率控制过冲的方法中，检测移动站的输出功率以确定其是否落在移动台的动态范围之外。 如果在动态范围之外，则计算并设置落在动态范围内的新的输出功率，并指示移动台以新的输出功率进行发送。

公开(公告)号：US07228134B2

公开(公告)日：2007-06-05

申请号：US10463995

申请日：2003-06-17

申请人： Asif D Gandhi ,  Mathew Thomas ,  Lily H Zhu

发明人： Asif D Gandhi ,  Mathew Thomas ,  Lily H Zhu

IPC分类号： H04Q7/20

CPC分类号： H04W48/06 ,  H04W52/50 ,  H04W74/002 ,  H04W74/0833

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06662019B2

公开(公告)日：2003-12-09

申请号：US09742613

申请日：2000-12-21

申请人： Raafat E Kamel ,  Alexandro Salvarani ,  Mathew Thomas ,  Stanley Vitebsky

发明人： Raafat E Kamel ,  Alexandro Salvarani ,  Mathew Thomas ,  Stanley Vitebsky

IPC分类号： H04B700

CPC分类号： H04W52/40 ,  H04L1/0002 ,  H04W52/16 ,  H04W52/50

摘要： A method and apparatus for estimating the initial power level and transmission rate of a burst on a secondary channel when the secondary channel is on fewer legs of a handoff, such as a soft or softer handoff, than the primary channel. In accordance with the present invention, the initial power level of the burst transmitted over a current secondary channel on a particular leg(s) is a function of a power level of a previous burst transmitted over a previous secondary channel on the identical leg(s) as the current secondary channel. For example, the initial power level of the burst can be based on the power level at the end of the previous burst shortly prior to the termination of the previous burst, where the termination of the previous burst was within a predetermined time interval of the start of the burst. Optionally, the initial power level of a burst can also be additionally adjusted based on characteristics of the communication link of the primary channel, the previous secondary channel, and the current secondary channel. The transmission rate may then be adjusted based on the initial power level determined as described above to obtain a more efficient transmission rate.

公开(公告)号：US20050026624A1

公开(公告)日：2005-02-03

申请号：US10632065

申请日：2003-07-31

申请人： Asif Gandhi ,  Frances Jiang ,  Mathew Thomas ,  Stanley Vitebsky

发明人： Asif Gandhi ,  Frances Jiang ,  Mathew Thomas ,  Stanley Vitebsky

IPC分类号： H04W28/12 ,  H04W74/08 ,  H04Q7/00

CPC分类号： H04W28/12 ,  H04W74/08

摘要： 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.

摘要翻译： 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：US07142867B1

公开(公告)日：2006-11-28

申请号：US09663265

申请日：2000-09-15

申请人： Asif Dawoodi Gandhi ,  Raafat Edward Kamel ,  Mathew Thomas ,  Stanley Vitebsky ,  Carl Francis Weaver

发明人： Asif Dawoodi Gandhi ,  Raafat Edward Kamel ,  Mathew Thomas ,  Stanley Vitebsky ,  Carl Francis Weaver

IPC分类号： H04Q7/20 ,  H04J3/16

CPC分类号： H04W28/22 ,  H04L1/0002 ,  H04W72/0486 ,  H04W72/082

摘要： A method is disclosed for determining when a request for a higher transmission rate should be granted to a mobile station that currently has access to a communication system to facilitate the maintenance of a performance target (quality of service level) of the reverse link. The method for determining when a mobile station can have access to a higher transmission rate includes obtaining first and second estimated performance indicators for a reverse link of the base station that a mobile station is currently accessing. A blocking threshold value is established. Access at the requested higher transmission rate is based on a comparison of the first and second indicators relative to the established blocking threshold value. If access is denied at the requested higher rate, access will be granted at the next lower rate which will not degrade the performance of the wireless communication system.

摘要翻译： 公开了一种用于确定何时应当向当前可以访问通信系统的移动台授予更高传输速率的请求以便于维护反向链路的性能目标（服务质量水平）的方法。 用于确定何时移动台能够访问较高传输速率的方法包括获得用于移动台正在访问的基站的反向链路的第一和第二估计性能指示符。 建立阻塞阈值。 以所请求的较高传输速率进行访问是基于第一和第二指示符相对于建立的阻塞阈值的比较。 如果访问以所请求的较高速率被拒绝，则将以下一个更低的速率授予访问，这不会降低无线通信系统的性能。

公开(公告)号：US07283550B2

公开(公告)日：2007-10-16

申请号：US10185025

申请日：2002-06-28

申请人： Virgil J. Duncan ,  George Edson Estes ,  T. Roger Kiang ,  Mathew Thomas ,  Stanley Vitebsky

发明人： Virgil J. Duncan ,  George Edson Estes ,  T. Roger Kiang ,  Mathew Thomas ,  Stanley Vitebsky

IPC分类号： H04Q7/00

CPC分类号： H04W28/26 ,  H04W72/1257

摘要： A method of applying one of several resource distribution algorithms to an incoming call to a communication system. The applied resource distribution algorithm is based on resource parameters obtained from a main scheduler of the communication system. Some of the resource parameters include the type of call, the resource usage and the resource allocation scheme. The resource parameters generally describe the amount of resources that are currently being used by the system and which resources are available to the incoming call. The method of the present invention admits the incoming call to the communication system in accordance with one of the resource distribution allocation schemes. In this manner, the resources of the communication system can be efficiently and fairly distributed to different types of users requesting admission to the communication system.

摘要翻译： 一种将几种资源分配算法中的一种应用于对通信系统的呼入的方法。 应用资源分配算法基于从通信系统的主调度器获得的资源参数。 一些资源参数包括呼叫类型，资源使用情况和资源分配方案。 资源参数通常描述系统当前使用的资源量以及哪些资源可用于来电。 本发明的方法根据资源分配方案之一，承认对通信系统的呼入。 以这种方式，通信系统的资源可以被有效地和公平地分配给请求准入通信系统的不同类型的用户。