Downstream Time Domain Based Adaptive Modulation for DOCSIS Based Applications
    2.
    发明申请
    Downstream Time Domain Based Adaptive Modulation for DOCSIS Based Applications 有权
    基于DOCSIS的应用的下行时域自适应调制

    公开(公告)号:US20100074167A1

    公开(公告)日:2010-03-25

    申请号:US12409461

    申请日:2009-03-23

    IPC分类号: H04B7/212 H04L12/56

    摘要: In a DOCSIS based satellite gateway data is transmitted over a single downstream channel, at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. To accomplish this, the downstream DOCSIS MAC data is parsed to extract DOCSIS packets. The DOCSIS packets are then loaded into packet queues based on an identifier within such packets such as the MAC destination address or SID. Each of the queues represents a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers based on the current signal quality being experienced at the subscriber location. A PHY-MAP describing the downstream data structure to be transmitted and inserted into the downstream data. Data is extracted from the packet queues in queue blocks as defined by the PHY-MAP. The queue blocks are modulated with transmission parameters appropriate for each queue block and transmitted to the DOCSIS based satellite modems. The satellite modems extract the PHY-MAP from the downstream data and use the information contained in it to demodulate and decode the queue for which they have sufficient downstream signal quality. Satellite modems measure and transmit downstream signal quality to the satellite gateway to be used to assigned traffic to the appropriate queues.

    摘要翻译: 在基于DOCSIS的卫星网关中,数据通过单个下游信道以不同的吞吐率传输。 根据该用户/接收机的下行信号质量为目的地为每个用户/接收机指定的数据被分配吞吐率。 为了实现这一点,下游DOCSIS MAC数据被解析以提取DOCSIS分组。 DOCSIS分组然后基于诸如MAC目的地址或SID之类的分组内的标识符加载到分组队列中。 每个队列表示基于当前在用户位置处经历的信号质量,特定订户可以容忍的带宽效率或吞吐率。 描述要发送并插入下游数据的下游数据结构的PHY-MAP。 从PHY-MAP定义的队列块中的数据包队列中提取数据。 使用适合于每个队列块的传输参数调制队列块,并将其发送到基于DOCSIS的卫星调制解调器。 卫星调制解调器从下游数据中提取PHY-MAP,并使用其中包含的信息对其具有足够的下行信号质量的队列进行解调和解码。 卫星调制解调器测量和传输下行信号质量到卫星网关,用于将流量分配给适当的队列。

    Downstream time domain based adaptive modulation for DOCSIS based applications
    3.
    发明授权
    Downstream time domain based adaptive modulation for DOCSIS based applications 失效
    基于DOCSIS的应用的下游时域自适应调制

    公开(公告)号:US07508785B2

    公开(公告)日:2009-03-24

    申请号:US10319929

    申请日:2002-12-12

    IPC分类号: H04B7/212

    摘要: In a DOCSIS based satellite gateway data is transmitted over a single downstream channel, at different throughput rates. Data destined for each subscriber/receiver is assigned a throughput rate depending upon the downstream signal quality of that subscriber/receiver. To accomplish this, the downstream DOCSIS MAC data is parsed to extract DOCSIS packets. The DOCSIS packets are then loaded into packet queues based on an identifier within such packets such as the MAC destination address or SID. Each of the queues represents a bandwidth efficiency or throughput rate that can be currently tolerated by specific subscribers based on the current signal quality being experienced at the subscriber location. A PHY-MAP describing the downstream data structure to be transmitted and inserted into the downstream data. Data is extracted from the packet queues in queue blocks as defined by the PHY-MAP. The queue blocks are modulated with transmission parameters appropriate for each queue block and transmitted to the DOCSIS based satellite modems. The satellite modems extract the PHY-MAP from the downstream data and use the information contained in it to demodulate and decode the queue for which they have sufficient downstream signal quality. Satellite modems measure and transmit downstream signal quality to the satellite gateway to be used to assigned traffic to the appropriate queues.

    摘要翻译: 在基于DOCSIS的卫星网关中,数据通过单个下游信道以不同的吞吐率传输。 根据该用户/接收机的下行信号质量为目的地为每个用户/接收机指定的数据被分配吞吐率。 为了实现这一点,下游DOCSIS MAC数据被解析以提取DOCSIS分组。 DOCSIS分组然后基于诸如MAC目的地址或SID之类的分组内的标识符加载到分组队列中。 每个队列表示基于当前在用户位置处经历的信号质量,特定订户可以容忍的带宽效率或吞吐率。 描述要发送并插入下游数据的下游数据结构的PHY-MAP。 从PHY-MAP定义的队列块中的数据包队列中提取数据。 使用适合于每个队列块的传输参数调制队列块,并将其发送到基于DOCSIS的卫星调制解调器。 卫星调制解调器从下游数据中提取PHY-MAP,并使用其中包含的信息对其具有足够的下行信号质量的队列进行解调和解码。 卫星调制解调器测量和传输下行信号质量到卫星网关,用于将流量分配给适当的队列。