公开(公告)号：US20100154017A1

公开(公告)日：2010-06-17

申请号：US12334777

申请日：2008-12-15

申请人： James S. An ,  Hui Sun ,  De Fu Li ,  Keil Brewer ,  John J. Downey ,  Chrisanto D. Leano

发明人： James S. An ,  Hui Sun ,  De Fu Li ,  Keil Brewer ,  John J. Downey ,  Chrisanto D. Leano

IPC分类号： H04N7/173

CPC分类号： H04L12/2801 ,  H04L12/2865 ,  H04L43/0817 ,  H04L43/16

摘要： Disclosed are apparatus and methods for managing upstream channels on a per cable modem basis. In certain embodiments, one or more thresholds are defined for each of a plurality of upstream logical channels of a headend system for receiving data from a plurality of cable modems (or other types of access nodes). Each defined threshold corresponds to a measurable parameter of the corresponding upstream logical channel. One or more metrics are collected for each cable modem of each upstream logical channel. It is determined whether to downgrade a selected cable modem to a selected one of the logical channels that has a lower performance level than the selected cable modem's current logical channel. Such downgrade determination is based on whether the selected cable modem's collected one or more metrics have failed a condition of the one or more defined thresholds and whether a percentage of a total of the cable modems of such current logical channel that have failed a condition for the one or more defined thresholds is less than a predefined percentage level. The selected cable modem is then caused to move from the current logical channel to the selected logical channel when the percentage of the total cable modems that have failed is below a predefined level if such selected logical channel is available. Otherwise, the current logical channel's modulation profile may be altered when the percentage of the total cable modems that have failed is above (or equal to) the predefined level.

摘要翻译： 公开了用于在每个电缆调制解调器的基础上管理上游信道的装置和方法。 在某些实施例中，为头端系统的多个上游逻辑信道中的每一个定义一个或多个阈值，用于从多个有线调制解调器（或其他类型的接入节点）接收数据。 每个定义的阈值对应于相应的上游逻辑信道的可测量参数。 为每个上游逻辑信道的每个电缆调制解调器收集一个或多个度量。 确定是否将所选择的电缆调制解调器降级到具有比所选择的电缆调制解调器的当前逻辑信道更低的性能水平的所选逻辑信道中。 这种降级确定是基于所选择的电缆调制解调器收集的一个或多个度量是否已经失败了一个或多个定义的阈值的条件，以及是否已经失败了该条件的这种当前逻辑信道的电缆调制解调器的总和的百分比 一个或多个定义的阈值小于预定义的百分比水平。 当所选择的逻辑信道可用时，如果所有已故障的总电缆调制解调器的百分比低于预定义级别，则所选择的电缆调制解调器然后被引导从当前逻辑信道移动到所选择的逻辑信道。 否则，当已经发生故障的总电缆调制解调器的百分比高于（或等于）预定义电平时，当前逻辑信道的调制配置文件可能会被更改。

公开(公告)号：US08201207B2

公开(公告)日：2012-06-12

申请号：US12334777

申请日：2008-12-15

申请人： James S. An ,  Hui Sun ,  De Fu Li ,  Keil Brewer ,  John J. Downey ,  Chrisanto D. Leano

发明人： James S. An ,  Hui Sun ,  De Fu Li ,  Keil Brewer ,  John J. Downey ,  Chrisanto D. Leano

IPC分类号： H04N7/173

CPC分类号： H04L12/2801 ,  H04L12/2865 ,  H04L43/0817 ,  H04L43/16

摘要： Disclosed are apparatus and methods for managing upstream channels on a per cable modem basis. In certain embodiments, one or more thresholds are defined for each of a plurality of upstream logical channels of a headend system for receiving data from a plurality of cable modems (or other types of access nodes). Each defined threshold corresponds to a measurable parameter of the corresponding upstream logical channel. One or more metrics are collected for each cable modem of each upstream logical channel. It is determined whether to downgrade a selected cable modem to a selected one of the logical channels that has a lower performance level than the selected cable modem's current logical channel. Such downgrade determination is based on whether the selected cable modem's collected one or more metrics have failed a condition of the one or more defined thresholds and whether a percentage of a total of the cable modems of such current logical channel that have failed a condition for the one or more defined thresholds is less than a predefined percentage level. The selected cable modem is then caused to move from the current logical channel to the selected logical channel when the percentage of the total cable modems that have failed is below a predefined level if such selected logical channel is available. Otherwise, the current logical channel's modulation profile may be altered when the percentage of the total cable modems that have failed is above (or equal to) the predefined level.

摘要翻译： 公开了用于在每个电缆调制解调器的基础上管理上游信道的装置和方法。 在某些实施例中，为头端系统的多个上游逻辑信道中的每一个定义一个或多个阈值，用于从多个有线调制解调器（或其他类型的接入节点）接收数据。 每个定义的阈值对应于相应的上游逻辑信道的可测量参数。 为每个上游逻辑信道的每个电缆调制解调器收集一个或多个度量。 确定是否将所选择的电缆调制解调器降级到具有比所选择的电缆调制解调器的当前逻辑信道更低的性能水平的所选逻辑信道中。 这种降级确定是基于所选择的电缆调制解调器收集的一个或多个度量是否已经失败了一个或多个定义的阈值的条件，以及是否已经失败了该条件的这种当前逻辑信道的电缆调制解调器的总和的百分比 一个或多个定义的阈值小于预定义的百分比水平。 当所选择的逻辑信道可用时，如果所有已故障的总电缆调制解调器的百分比低于预定义级别，则所选择的电缆调制解调器然后被引导从当前逻辑信道移动到所选择的逻辑信道。 否则，当已经发生故障的总电缆调制解调器的百分比高于（或等于）预定义电平时，当前逻辑信道的调制配置文件可能会被更改。

公开(公告)号：US08134921B2

公开(公告)日：2012-03-13

申请号：US12060824

申请日：2008-04-01

申请人： Robert Goguen ,  De Fu Li ,  Pawel Sowinski ,  Nicos Achilleoudis

发明人： Robert Goguen ,  De Fu Li ,  Pawel Sowinski ,  Nicos Achilleoudis

IPC分类号： H04J3/16

CPC分类号： H04L12/2801 ,  H04L47/70 ,  H04L47/803 ,  H04L47/826 ,  H04N21/6402 ,  H04N21/64738 ,  H04N21/64769

摘要： In one embodiment, a Cable Modem Termination System (CMTS) generates a bandwidth grant message corresponding to a time segment. The CMTS identifies a portion of the time segment to be assigned according to received bandwidth request messages originating from downstream cable modems. The CMTS determines whether a remaining portion of the time segment can accommodate more than N broadcast contention slots, and if so, selects at least one of the cable modems for receiving an upstream bandwidth boost.

摘要翻译： 在一个实施例中，电缆调制解调器终端系统（CMTS）生成对应于时间段的带宽授权消息。 CMTS根据从下游电缆调制解调器产生的接收的带宽请求消息识别要分配的时间段的一部分。 CMTS确定时间段的剩余部分是否可以容纳多于N个广播竞争时隙，如果是，则选择用于接收上行带宽增强的至少一个电缆调制解调器。

公开(公告)号：US20090249417A1

公开(公告)日：2009-10-01

申请号：US12060824

申请日：2008-04-01

申请人： Robert Goguen ,  Nicos Achilleoudis ,  De Fu Li ,  Pawel Sowinski

发明人： Robert Goguen ,  Nicos Achilleoudis ,  De Fu Li ,  Pawel Sowinski

IPC分类号： H04N7/173

CPC分类号： H04L12/2801 ,  H04L47/70 ,  H04L47/803 ,  H04L47/826 ,  H04N21/6402 ,  H04N21/64738 ,  H04N21/64769

摘要： In one embodiment, a Cable Modem Termination System (CMTS) generates a bandwidth grant message corresponding to a time segment. The CMTS identifies a portion of the time segment to be assigned according to received bandwidth request messages originating from downstream cable modems. The CMTS determines whether a remaining portion of the time segment can accommodate more than N broadcast contention slots, and if so, selects at least one of the cable modems for receiving an upstream bandwidth boost.

摘要翻译： 在一个实施例中，电缆调制解调器终端系统（CMTS）生成对应于时间段的带宽授权消息。 CMTS根据从下游电缆调制解调器产生的接收的带宽请求消息识别要分配的时间段的一部分。 CMTS确定时间段的剩余部分是否可以容纳多于N个广播竞争时隙，如果是，则选择用于接收上行带宽增强的至少一个电缆调制解调器。

公开(公告)号：US07395309B1

公开(公告)日：2008-07-01

申请号：US09894261

申请日：2001-06-28

申请人： Gary M. Lewis ,  De Fu Li ,  Nathan R. Melhorn

发明人： Gary M. Lewis ,  De Fu Li ,  Nathan R. Melhorn

IPC分类号： G06F15/16

CPC分类号： H04L65/80 ,  H04L65/607 ,  H04M11/066

摘要： A method for reducing Internet bandwidth used for data transfer between an originating modem and an answering modem over a VoIP connection is provided. Idle data received from the originating modem is detected by an Internet node. The Internet node does not forward the detected received idle data over the VoIP connection. To keep the modem connection between the originating modem and the answering modem alive, the Internet node regenerates idle data and transmits the regenerated idle data to the answering modem upon detecting no data received for forwarding to the answering modem.

摘要翻译： 提供了一种通过VoIP连接减少用于始发调制解调器和应答调制解调器之间的数据传输的因特网带宽的方法。 由起始调制解调器接收的空闲数据由互联网节点检测。 因特网节点不通过VoIP连接转发检测到的接收到的空闲数据。 为了保持始发调制解调器和应答调制解调器之间的调制解调器连接，互联网节点重新生成空闲数据，并且在检测到没有收到的数据转发到应答调制解调器时，将再生的空闲数据发送到应答调制解调器。

公开(公告)号：US07839773B2

公开(公告)日：2010-11-23

申请号：US12075838

申请日：2008-03-14

申请人： De Fu Li ,  Pawel Sowinski ,  James An ,  Robert Goguen

发明人： De Fu Li ,  Pawel Sowinski ,  James An ,  Robert Goguen

IPC分类号： H04J3/00 ,  H04J1/00 ,  H04L12/26 ,  H04N7/173

CPC分类号： H04L5/1438 ,  H04J3/0655 ,  H04J3/0682 ,  H04J3/14 ,  H04L12/2801 ,  H04L12/2861 ,  H04L12/287 ,  H04L12/2898

摘要： In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM.

摘要翻译： 在一个实施例中，描述主题电缆调制解调器（CM）可以突发的至少一段持续时间的第一测距定时描述和多个接入网络中的主体CM和其他CM不允许突发的持续时间 被描述为描述来自主题CM的脉冲串期望由电缆调制解调器终端系统（CMTS）接收的持续时间的第二测距定时描述。 CMTS被调节为在由第二测距定时描述描述的持续时间期间从主题CM接收突发。 从CMTS接收到来自主题CM的突发的至少实际时间和多个接入网络中的主体CM和其他CM不允许突发以产生确定的定时的持续时间来确定定时偏移 抵消。 报告确定的定时偏移以补偿多址网络和对象CM中的延迟。

公开(公告)号：US07801040B1

公开(公告)日：2010-09-21

申请号：US11865520

申请日：2007-10-01

申请人： Hemant Singh ,  De Fu Li ,  Mark Millet

发明人： Hemant Singh ,  De Fu Li ,  Mark Millet

IPC分类号： H04J1/16

CPC分类号： H04J3/0682 ,  H04L12/2801

摘要： In one embodiment a technique is disclosed for facilitating communication between nodes and a head end of an access network including a head end, at least one shared access upstream channel and at least one downstream channel. A first insertion rate estimate is determined. In at least one embodiment, the first insertion rate estimate may relate to an estimated number of nodes attempting to sign-on to the access network during one or more time interval(s). In at least one embodiment, a frequency of occurrence of initial maintenance opportunities available to a first plurality of network nodes may be dynamically adjusted, for example, using data relating to the first insertion rate estimate. According to one embodiment where the access network corresponds to a cable network, the head end of the cable network may be operable to sign on at least 40,000 cable modems within a time interval of not more than 300 seconds.

摘要翻译： 在一个实施例中，公开了一种用于促进节点与包括头端，至少一个共享访问上行信道和至少一个下游信道的接入网络的前端之间的通信的技术。 确定第一插入率估计。 在至少一个实施例中，第一插入速率估计可以涉及在一个或多个时间间隔期间尝试登录到接入网络的节点的估计数量。 在至少一个实施例中，可以例如使用与第一插入率估计有关的数据来动态地调整第一多个网络节点可用的初始维护机会的发生频率。 根据访问网络对应于有线网络的一个实施例，电缆网络的头端可以用于在不超过300秒的时间间隔内登录至少40,000个电缆调制解调器。

公开(公告)号：US20100154016A1

公开(公告)日：2010-06-17

申请号：US12334392

申请日：2008-12-12

申请人： De Fu Li ,  Pawel Sowinski ,  Robert Goguen ,  Tong Liu ,  Alon Bernstein

发明人： De Fu Li ,  Pawel Sowinski ,  Robert Goguen ,  Tong Liu ,  Alon Bernstein

IPC分类号： H04N7/173

CPC分类号： H04N21/6543 ,  H04N21/4263 ,  H04N21/4381 ,  H04N21/4383 ,  H04N21/6118 ,  H04N21/6125 ,  H04N21/6583

摘要： In one example, a Cable Modem Termination System (CMTS) sends first bandwidth allocation messages to a first upstream transmit interface on a cable modem and send second bandwidth allocation messages to a second upstream transmit interface on the cable modem. The bandwidth allocation messages indicate transmit windows for the cable modem to range over the interfaces. The transmit windows included in the first bandwidth allocation messages are spaced based on receipt of ranging requests from the second upstream transmit interface, and the transmit windows included in the second bandwidth allocation messages are spaced based on receipt of ranging requests from the first upstream transmit interface.

摘要翻译： 在一个示例中，有线调制解调器终端系统（CMTS）将第一带宽分配消息发送到有线调制解调器上的第一上行传输接口，并向电缆调制解调器上的第二上行传输接口发送第二带宽分配消息。 带宽分配消息指示电缆调制解调器在接口上范围的传输窗口。 包括在第一带宽分配消息中的发送窗口基于来自第二上行发送接口的测距请求的接收而间隔开，并且包括在第二带宽分配消息中的发送窗口基于来自第一上行发送接口的测距请求的接收而间隔开 。

公开(公告)号：US20090232111A1

公开(公告)日：2009-09-17

申请号：US12075838

申请日：2008-03-14

申请人： De Fu Li ,  Pawel Sowinski ,  James An ,  Robert Goguen

发明人： De Fu Li ,  Pawel Sowinski ,  James An ,  Robert Goguen

IPC分类号： H04Q7/00 ,  H04L5/16

CPC分类号： H04L5/1438 ,  H04J3/0655 ,  H04J3/0682 ,  H04J3/14 ,  H04L12/2801 ,  H04L12/2861 ,  H04L12/287 ,  H04L12/2898

摘要： In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM.

摘要翻译： 在一个实施例中，描述主题电缆调制解调器（CM）可以突发的至少一段持续时间的第一测距定时描述和多个接入网络中的主体CM和其他CM不允许突发的持续时间 被描述为描述来自主题CM的脉冲串期望由电缆调制解调器终端系统（CMTS）接收的持续时间的第二测距定时描述。 CMTS被调节为在由第二测距定时描述描述的持续时间期间从主题CM接收突发。 从CMTS接收到来自主题CM的突发的至少实际时间以及多访问网络中的主题CM和其他CM不被允许突发以产生确定的定时的持续时间来确定定时偏移 抵消。 报告确定的定时偏移以补偿多址网络和对象CM中的延迟。