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    Method and apparatus for a rate control in a high data rate communication system
    1.
    发明授权
    Method and apparatus for a rate control in a high data rate communication system 有权
    高数据速率通信系统中速率控制的方法和装置

    公开(公告)号：US07417957B2

    公开(公告)日：2008-08-26

    申请号：US10808939

    申请日：2004-03-24

    申请人： Nagabhushana T. Sindhushayana ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    发明人： Nagabhushana T. Sindhushayana ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    IPC分类号： H04L12/26 ,  H04B7/212

    CPC分类号： H04L1/0021 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/002 ,  H04L1/0025 ,  Y02D50/10

    摘要： A method and an apparatus for rate control in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may send data packets to an access terminal (AT). The data rate is selected to maintain targeted packet error rate (PER). The AT's open loop algorithm measures received signal to interference and noise ratio (SINR) at regular intervals, and uses the information to predict an average SINR over the next packet duration. The AT's closed loop algorithm measures a packet error rate (PER) of the received signal, and uses the PER to calculate a closed loop correction factor. The loop correction factor is added to the SINR value predicted by the open loop, resulting in an adjusted SINR.

    摘要翻译： 公开了一种用于高数据速率（HDR）通信系统中的速率控制的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择数据速率以维持目标分组错误率（PER）。 AT的开环算法以规则的间隔测量接收信号与干扰和噪声比（SINR），并且使用该信息来预测下一个分组持续时间内的平均SINR。 AT的闭环算法测量接收信号的分组错误率（PER），并使用PER计算闭环校正因子。 循环校正因子加到由开环预测的SINR值，得到调整后的SINR。

    Method and apparatus for adaptive rate selection in a communication system
    5.
    发明授权
    Method and apparatus for adaptive rate selection in a communication system 失效
    通信系统中自适应速率选择的方法和装置

    公开(公告)号：US06760313B1

    公开(公告)日：2004-07-06

    申请号：US09597516

    申请日：2000-06-19

    申请人： Nagabhushana T. Sindhushayana ,  Eduardo A. S. Esteves ,  Rashid A. Attar ,  Qiang Wu

    发明人： Nagabhushana T. Sindhushayana ,  Eduardo A. S. Esteves ,  Rashid A. Attar ,  Qiang Wu

    IPC分类号： G01R3108

    CPC分类号： H04L1/0002

    摘要： A method and an apparatus for adaptive data rate selection in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may transmit data packets to an access terminal (AT). The transmission data rate is selected to maintain target packet error rate (PER). Each AT monitors signal quality metric of signals received from APs. An AT receiving forward link signals from multiple ATs identifies the AT associated with the highest quality forward link signal. The AT then evaluates the rate at which a tail probability of error is greater than or equal to a target tail probability of error. The AT then generates a prediction of a first data rate at which the PER of packets received from the identified AP will not exceed the target PER, and a prediction of a second data rate at which the PER of packets received from the selected AP will exceed the target PER. The AT uses the values of the first and second data rates to predict probabilities of selecting the first and the second data rates such that a throughput of the HDR system is maximized and the target PER is achieved. The predicted probabilities are then utilized as biases for a method identifying whether the first data rate or the second data rate will be requested from the AP. The disclosed method and apparatus may be extended to the full set of available data rates.

    摘要翻译： 公开了一种在高数据速率（HDR）通信系统中进行自适应数据速率选择的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择传输数据速率以维持目标分组错误率（PER）。 每个AT监视从AP接收的信号的信号质量度量。 从多个AT接收前向链路信号的AT识别与最高质量的前向链路信号相关联的AT。 AT然后评估误差的概率大于或等于目标尾部误差概率的速率。 然后，AT产生对从所识​​别的AP接收的分组的PER不超过目标PER的第一数据速率的预测，以及从所选择的AP接收的分组的PER将超过的第二数据速率的预测 目标PER。 AT使用第一和第二数据速率的值来预测选择第一和第二数据速率的概率，使得HDR系统的吞吐量最大化并且实现目标PER。 然后，将预测概率用作用于识别从AP请求第一数据速率或第二数据速率的方法的偏差。 所公开的方法和装置可以扩展到全部可用数据速率。

    Method and apparatus for adaptive rate selection in a communication system
    6.
    发明授权
    Method and apparatus for adaptive rate selection in a communication system 失效
    通信系统中自适应速率选择的方法和装置

    公开(公告)号：US07440431B2

    公开(公告)日：2008-10-21

    申请号：US10834605

    申请日：2004-04-28

    申请人： Nagabhushana T. Sindhushayana ,  Eduardo A. S. Esteves ,  Rashid A. Attar ,  Qiang Wu

    发明人： Nagabhushana T. Sindhushayana ,  Eduardo A. S. Esteves ,  Rashid A. Attar ,  Qiang Wu

    IPC分类号： H04Q7/00

    CPC分类号： H04L1/0002

    摘要： A method and an apparatus for adaptive data rate selection in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may transmit data packets to an access terminal (AT). The transmission data rate is selected to maintain target packet error rate (PER). Each AT monitors signal quality metric of signals received from APs. An AT receiving forward link signals from multiple ATs identifies the AT associated with the highest quality forward link signal.

    摘要翻译： 公开了一种在高数据速率（HDR）通信系统中进行自适应数据速率选择的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择传输数据速率以维持目标分组错误率（PER）。 每个AT监视从AP接收的信号的信号质量度量。 从多个AT接收前向链路信号的AT识别与最高质量的前向链路信号相关联的AT。

    Method and apparatus for a rate control in a high data rate communication system
    8.
    发明授权
    Method and apparatus for a rate control in a high data rate communication system 有权
    高数据速率通信系统中速率控制的方法和装置

    公开(公告)号：US06751199B1

    公开(公告)日：2004-06-15

    申请号：US09556769

    申请日：2000-04-24

    申请人： Nagabhushana T. Sindhushayana ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    发明人： Nagabhushana T. Sindhushayana ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    IPC分类号： H04L1226

    CPC分类号： H04L1/0021 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/002 ,  H04L1/0025 ,  Y02D50/10

    摘要： A method and an apparatus for rate control in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may send data packets to an access terminal (AT). The data rate is selected to maintain targeted packet error rate (PER). The AT's open loop algorithm measures received signal to interference and noise ratio (SINR) at regular intervals, and uses the information to predict an average SINR over the next packet duration. The AT's closed loop algorithm measures a packet error rate (PER) of the received signal, and uses the PER to calculate a closed loop correction factor. The loop correction factor is added to the SINR value predicted by the open loop, resulting in an adjusted SINR. The AT maintains a look up table, which comprises a set of SINR thresholds that represent a minimum SINR necessary to successfully decode a packet at each data rate. The AT uses the adjusted set of SINR thresholds in the look up table to select the highest data rate, the SINR threshold of which is below the predicted SINR. The AT then requests, over the reverse link, that the AP send the next packet at this data-rate.

    摘要翻译： 公开了一种用于高数据速率（HDR）通信系统中的速率控制的方法和装置。 示例性HDR通信系统定义了一组数据速率，接入点（AP）可在该组数据速率上向接入终端（AT）发送数据分组。 选择数据速率以维持目标分组错误率（PER）。 AT的开环算法以规则的间隔测量接收信号与干扰和噪声比（SINR），并且使用该信息来预测下一个分组持续时间内的平均SINR。 AT的闭环算法测量接收信号的分组错误率（PER），并使用PER计算闭环校正因子。 循环校正因子加到由开环预测的SINR值，得到调整后的SINR。 AT维护查找表，其包括一组SINR阈值，其表示在每个数据速率下成功解码分组所需的最小SINR。 AT在查找表中使用调整后的SINR阈值组来选择SINR阈值低于预测SINR的最高数据速率。 AT然后通过反向链路请求AP以该数据速率发送下一个分组。