Packet-level erasure protection coding in aggregated packet transmissions
    1.
    发明授权
    Packet-level erasure protection coding in aggregated packet transmissions 有权
    聚合分组传输中的分组级擦除保护编码

    公开(公告)号:US08473821B2

    公开(公告)日:2013-06-25

    申请号:US13043259

    申请日:2011-03-08

    IPC分类号: H03M13/00

    摘要: In a first aspect, an aggregated packet (A-MPDU) includes packets (MPDUs) and EC-Blocks (Error Correction Blocks) containing error correction coding information. A transmitter uses a Fountain coding scheme (for example, Raptor or RaptorQ) to generate the error correction coding information from the MPDUs. If a receiver detects an error in a received MPDU, then the receiver uses the error correction coding information from the EC-Blocks to correct the error. In a second novel aspect, a determination is made as to whether a change in error rate is more likely due to collisions or to a low SNR. If the determination is that the change is due to collisions then the MCS index is adjusted to restore a target error rate, whereas if the determination is that the change is due to a low SNR then the number of EC-Blocks per A-MPDU is adjusted to restore the target error rate.

    摘要翻译: 在第一方面,聚合分组(A-MPDU)包括包含纠错编码信息的分组(MPDU)和EC-块(纠错块)。 发射机使用喷泉编码方案(例如,Raptor或RaptorQ)从MPDU生成纠错编码信息。 如果接收机检测到接收到的MPDU中的错误,则接收机使用来自EC-Block的纠错编码信息来校正错误。 在第二个新颖的方面,确定误差率的变化是否更可能是由于冲突或低SNR。 如果确定改变是由于冲突,则MCS索引被调整以恢复目标错误率,而如果确定改变是由于低SNR,则每个A-MPDU的EC块的数量是 调整以恢复目标错误率。

    PACKET-LEVEL ERASURE PROTECTION CODING IN AGGREGATED PACKET TRANSMISSIONS
    2.
    发明申请
    PACKET-LEVEL ERASURE PROTECTION CODING IN AGGREGATED PACKET TRANSMISSIONS 有权
    分组级保护编码在分组分组传输中的应用

    公开(公告)号:US20120117446A1

    公开(公告)日:2012-05-10

    申请号:US13043259

    申请日:2011-03-08

    IPC分类号: H03M13/05 G06F11/10

    摘要: In a first aspect, an aggregated packet (A-MPDU) includes packets (MPDUs) and EC-Blocks (Error Correction Blocks) containing error correction coding information. A transmitter uses a Fountain coding scheme (for example, Raptor or RaptorQ) to generate the error correction coding information from the MPDUs. If a receiver detects an error in a received MPDU, then the receiver uses the error correction coding information from the EC-Blocks to correct the error. In a second novel aspect, a determination is made as to whether a change in error rate is more likely due to collisions or to a low SNR. If the determination is that the change is due to collisions then the MCS index is adjusted to restore a target error rate, whereas if the determination is that the change is due to a low SNR then the number of EC-Blocks per A-MPDU is adjusted to restore the target error rate.

    摘要翻译: 在第一方面,聚合分组(A-MPDU)包括包含纠错编码信息的分组(MPDU)和EC-块(纠错块)。 发射机使用喷泉编码方案(例如,Raptor或RaptorQ)从MPDU生成纠错编码信息。 如果接收机检测到接收到的MPDU中的错误,则接收机使用来自EC-Block的纠错编码信息来校正错误。 在第二个新颖的方面,确定误差率的变化是否更可能是由于冲突或低SNR。 如果确定改变是由于冲突,则MCS索引被调整以恢复目标错误率,而如果确定改变是由于低SNR,则每个A-MPDU的EC块的数量是 调整以恢复目标错误率。

    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE
    3.
    发明申请
    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE 审中-公开
    管理发射功率,在电视白天更好的频率重新使用

    公开(公告)号:US20130044681A1

    公开(公告)日:2013-02-21

    申请号:US13397493

    申请日:2012-02-15

    IPC分类号: H04W4/00

    摘要: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. By managing transmit power as described herein, medium re-use may be improved in such a network, and unfair usage problems may be alleviated. One example method generally includes receiving a request message comprising an indication of a modulation and coding scheme (MCS) for transmitting data frames to be received, determining a link margin based on the MCS, and transmitting a response message with an indication of the link margin. Another example method generally includes determining a MCS for transmitting data frames and transmitting a request message comprising an indication of the MCS.

    摘要翻译: 本公开的某些方面提供了用于管理电视空白(TVWS)网络中的发射功率的技术和装置。 通过如本文所述管理发送功率,可以在这样的网络中改善中等重复使用,并且可以减轻不公平的使用问题。 一个示例性方法通常包括接收包括用于发送要接收的数据帧的调制和编码方案(MCS)的指示的请求消息,基于MCS确定链路余量,以及发送具有链路余量指示的响应消息 。 另一示例性方法通常包括确定用于发送数据帧的MCS并发送包括MCS的指示的请求消息。

    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE
    4.
    发明申请
    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE 有权
    管理发射功率,在电视白天更好的频率重新使用

    公开(公告)号:US20130044680A1

    公开(公告)日:2013-02-21

    申请号:US13397473

    申请日:2012-02-15

    IPC分类号: H04W52/04

    摘要: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. By managing transmit power as described herein, medium re-use may be improved in such a network, and unfair usage problems may be alleviated. One example method generally includes receiving, from an apparatus, a message with an indication of a highest transmit power used by the apparatus for transmitting data frames; and determining that the apparatus is a dominant interferer based, at least in part, on the highest transmit power. Another example method generally includes receiving, from an apparatus, a control or management message with a first indication of a first transmit power used by the apparatus for transmitting data frames; and determining that the apparatus is a dominant interferer based, at least in part, on the first transmit power.

    摘要翻译: 本公开的某些方面提供了用于管理电视空白(TVWS)网络中的发射功率的技术和装置。 通过如本文所述管理发送功率,可以在这样的网络中改善中等重复使用,并且可以减轻不公平的使用问题。 一个示例性方法通常包括从设备接收具有由用于发送数据帧的设备使用的最高发射功率的指示的消息; 以及至少部分地基于最高发射功率确定所述装置是主要干扰源。 另一示例性方法通常包括从装置接收控制或管理消息,其具有用于发送数据帧的装置所使用的第一发射功率的第一指示; 以及至少部分地基于所述第一发射功率来确定所述装置是主要干扰源。

    Managing transmit power for better frequency re-use in TV white space
    6.
    发明授权
    Managing transmit power for better frequency re-use in TV white space 有权
    管理传输功率,以便更好地在电视空白区域重新使用频率

    公开(公告)号:US09585025B2

    公开(公告)日:2017-02-28

    申请号:US13397473

    申请日:2012-02-15

    摘要: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. By managing transmit power as described herein, medium re-use may be improved in such a network, and unfair usage problems may be alleviated. One example method generally includes receiving, from an apparatus, a message with an indication of a highest transmit power used by the apparatus for transmitting data frames; and determining that the apparatus is a dominant interferer based, at least in part, on the highest transmit power. Another example method generally includes receiving, from an apparatus, a control or management message with a first indication of a first transmit power used by the apparatus for transmitting data frames; and determining that the apparatus is a dominant interferer based, at least in part, on the first transmit power.

    摘要翻译: 本公开的某些方面提供了用于管理电视空白(TVWS)网络中的发射功率的技术和装置。 通过如本文所述管理发送功率,可以在这样的网络中改善中等重复使用,并且可以减轻不公平的使用问题。 一个示例性方法通常包括从设备接收具有由用于发送数据帧的设备使用的最高发射功率的指示的消息; 以及至少部分地基于最高发射功率确定所述装置是主要干扰源。 另一示例性方法通常包括从装置接收控制或管理消息,其具有用于发送数据帧的装置所使用的第一发射功率的第一指示; 以及至少部分地基于所述第一发射功率来确定所述装置是主要干扰源。

    Power control for TV white space devices
    7.
    发明授权
    Power control for TV white space devices 有权
    电视空白设备的电源控制

    公开(公告)号:US08831668B2

    公开(公告)日:2014-09-09

    申请号:US13290864

    申请日:2011-11-07

    摘要: Certain aspects of the present disclosure provide techniques and apparatus for using power control in a television white space (TVWS) network. One example method generally includes generating, at a first apparatus, a message for controlling a transmit power of a second apparatus—the message including a first indication of a first transmitter power backoff for the first apparatus and a second indication of a second transmitter power backoff for the second apparatus—and transmitting, to the second apparatus, the message based on the first transmitter power backoff. In this manner, messaging may be used to enable transmit power control of devices in a TVWS network, which may operate in accordance with the IEEE 802.11af standard.

    摘要翻译: 本公开的某些方面提供了在电视空白(TVWS)网络中使用功率控制的技术和装置。 一个示例性方法通常包括在第一设备处生成用于控制第二设备的发射功率的消息 - 该消息包括第一设备的第一发射机功率回退的第一指示和第二发射机功率回退的第二指示 对于第二装置,并且基于第一发射机功率回退向第二装置发送消息。 以这种方式,可以使用消息传递来实现可以根据IEEE 802.11af标准操作的TVWS网络中的设备的发射功率控制。