公开(公告)号：US09548836B2

公开(公告)日：2017-01-17

申请号：US14137345

申请日：2013-12-20

Applicant: Broadcom Corporation

Inventor： Yitshak Ohana ,  Avi Kliger ,  Anatoli Shindler ,  Bazhong Shen

IPC: H04B15/00 ,  H04L1/00 ,  H04L1/20

CPC classification number: H04L1/0054 ,  H04L1/0047 ,  H04L1/0057 ,  H04L1/20

Abstract: The present disclosure is directed to a system and method for detecting burst noise. The system and method are described in the exemplary context of a cable modem system and can be used in such a system to specifically detect upstream burst noise. Once detected, the system and method can adjust the upstream receiver that receives data corrupted by the upstream burst noise to reduce the potentially deleterious effects that the burst noise can have on, for example, the packet error rate and/or data rate of the upstream receiver.

Abstract translation: 本公开涉及用于检测突发噪声的系统和方法。 在电缆调制解调器系统的示例性上下文中描述了系统和方法，并且可以在这种系统中用于专门检测上游突发噪声。 一旦检测到，系统和方法可以调整接收由上游突发噪声损坏的数据的上游接收机，以减少突发噪声可能产生的潜在的有害影响，例如上行的分组错误率和/或数据速率 接收器。

公开(公告)号：US08942220B2

公开(公告)日：2015-01-27

申请号：US14072618

申请日：2013-11-05

Applicant: Broadcom Corporation

Inventor： Avi Kliger ,  Yitshak Ohana ,  Philippe Klein

IPC: H04B7/212 ,  H04L12/813 ,  H04L12/24 ,  H04L12/911 ,  H04L12/927

CPC classification number: H04L47/20 ,  H04L41/5022 ,  H04L47/781 ,  H04L47/805

Abstract: An example of a method of policing a flow in a home network such as a MoCA network may include calculating a policing period, calculating a first credit parameter, initializing a first usage variable at a beginning of the policing period, receiving a packet at an ingress node, calculating the first usage variable based on a first formula, determining whether the first usage variable is less than or equal to the first credit parameter, and making a reservation request when the first usage variable is less than or equal to the first credit parameter. The reservation request is different from an opportunistic reservation request. Examples of a system and a computer program product having instructions stored in a tangible computer-readable storage medium are also provided.

Abstract translation: 在家庭网络（例如MoCA网络）中管理流量的方法的示例可以包括计算管制周期，计算第一信用参数，在监管周期开始时初始化第一使用变量，在入口处接收分组 节点，基于第一公式计算第一使用变量，确定第一使用变量是否小于或等于第一信用参数，以及当第一使用变量小于或等于第一信用参数时进行预约请求 。 预订请求与机会预约请求不同。 还提供了具有存储在有形计算机可读存储介质中的指令的系统和计算机程序产品的示例。

公开(公告)号：US20140153673A1

公开(公告)日：2014-06-05

申请号：US14069258

申请日：2013-10-31

Applicant: Broadcom Corporation

Inventor： Ba-Zhong Shen ,  Richard S. Prodan ,  Avi Kliger ,  Leo Montreuil ,  Jonathan S. Min ,  Tak K. Lee ,  Kelly Brian Cameron ,  Hau Thien Tran

IPC: H04L1/00 ,  H04L27/26

CPC classification number: H04L1/0054 ,  H04L1/0045 ,  H04L25/03159 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/2649

Abstract: A communication device is configured adaptively to process a receive signal based on noise that may have adversely affected the signal during transition via communication channel. The device may be configured to identify those portions of the signal of the signal that are noise-affected (e.g., noise-affected sub-carriers of an orthogonal frequency division multiplexing (OFDM) signal), or the device may receive information that identifies those portions of the signal that are noise-affected from one or more other devices. The device may be configured to perform the modulation processing of the received signal to generate log-likelihood ratios (LLRs) for use in decoding the signal. Those LLRs associated with noise-affected portions of the signal are handled differently than LLRs associated with portions of the signal that are not noise-affected. The LLRs may be scaled based on signal to noise ratio(s) (SNR(s)) associated with the signal (e.g., based on background noise, burst noise, etc.).

Abstract translation: 通信设备被自适应地配置为基于可能在经由通信信道的转换期间不利地影响信号的噪声来处理接收信号。 该设备可以被配置为识别受到噪声影响的信号的信号的那些部分（例如，正交频分复用（OFDM）信号的噪声影响的子载波），或者设备可以接收标识那些 来自一个或多个其他装置的噪声影响的部分信号。 该设备可以被配置为执行接收信号的调制处理，以产生用于解码信号的对数似然比（LLR）。 与信号的噪声影响部分相关联的那些LLR被处理与不受噪声影响的信号的部分相关联的LLR不同。 可以基于与信号相关联的信噪比（SNR（s））来缩放LLR（例如，基于背景噪声，突发噪声等）。

公开(公告)号：US20140126345A1

公开(公告)日：2014-05-08

申请号：US14072991

申请日：2013-11-06

Applicant: BROADCOM CORPORATION

Inventor： Yitshak Ohana ,  Avi Kliger ,  Thomas J. Kolze

IPC: H04L1/00

CPC classification number: H04L1/0003 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0068 ,  H04L1/0071 ,  H04L27/2602

Abstract: A communication device includes a media access control (MAC) and a physical layer (PHY) processor and supports multi-profile communications with one or more other communication devices. The PHY processor selects a profile based on one or more characteristics of a communication pathway between the device and the one or more other communication devices. A profile may include operational parameters such as modulation coding set (MCS), forward error correction (FEC) and/or error correction code (ECC), a number of bits per symbol per sub-carrier and/or sub-carrier mapping (e.g., such as based on orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA)), cyclic prefix, channel(s) used in transmission, bit-filling and shortening, unicast and/or multicast transmission, and/or other operational parameters. The PHY processor also may be configured to operate within at least two different operational modes including a first mode of packet aggregation and a second mode of bit-filling and shortening.

Abstract translation: 通信设备包括媒体访问控制（MAC）和物理层（PHY）处理器，并且支持与一个或多个其他通信设备的多简档通信。 PHY处理器基于设备和一个或多个其他通信设备之间的通信路径的一个或多个特性来选择简档。 简档可以包括诸如调制编码集（MCS），前向纠错（FEC）和/或纠错码（ECC）的操作参数，每个子载波和/或子载波映射（例如， 例如基于正交频分复用（OFDM）或正交频分多址（OFDMA）），循环前缀，在传输中使用的信道，比特填充和缩短，单播和/或多播传输，和/或 其他操作参数。 PHY处理器还可以被配置为在至少两种不同的操作模式中操作，包括第一模式的分组聚合和第二种比特填充和缩短模式。

公开(公告)号：US20140072304A1

公开(公告)日：2014-03-13

申请号：US14022972

申请日：2013-09-10

Applicant: Broadcom Corporation

Inventor： Edward Wayne BOYD ,  Avi Kliger

IPC: H04B10/27

CPC classification number: H04B10/27 ,  H04Q11/0067 ,  H04Q2011/0088

Abstract: A PHY auto-negotiation and link up procedure for Ethernet Passive Optical Network Over Coax (EPOC) is provided. The procedure is compliant with the Ethernet Passive Optical Network (EPON) standard and can be used to bring an EPOC network to user traffic readiness. In addition, the procedure, or a variation thereof, can be used to enable periodic maintenance of the coaxial link of the EPOC network, thereby maintaining adequate communication conditions.

Abstract translation: 提供了以太网无源光网络同轴电缆（EPOC）的PHY自动协商和链接过程。 该过程符合以太网无源光网络（EPON）标准，可用于将EPOC网络带到用户流量准备状态。 此外，该过程或其变化可以用于实现EPOC网络的同轴链路的周期性维护，从而保持足够的通信条件。

公开(公告)号：US20130347043A1

公开(公告)日：2013-12-26

申请号：US14018371

申请日：2013-09-04

Applicant: Broadcom Corporation

Inventor： Yitshak OHANA ,  Philippe Klein ,  Avi Kliger

IPC: H04N21/436

CPC classification number: H04N21/43615 ,  H04L1/1848 ,  H04L1/1874 ,  H04L12/413 ,  H04L47/34

Abstract: Systems and methods for transmitting packets over a network of communication channels are provide. A system according to the invention may include first and second nodes in communication with a coax backbone. The first node may further include a retransmission buffer. The system may also include a network access coordinator operative to coordinate access of the nodes to the coax backbone. In a time period at least one first packet is transmitted by the first node to the second node. The first packet may include an indication that retransmission service is applied. The first packet may also include a indication of the length corresponding to the packet. If, during the first time period the packet is not received by the second node, the second node is operative to send a retransmission request to the network access coordinator.

Abstract translation: 提供了通过通信信道的网络传送分组的系统和方法。 根据本发明的系统可以包括与同轴电缆主干通信的第一和第二节点。 第一节点还可以包括重传缓冲器。 该系统还可以包括可操作以协调节点到同轴电缆主干的接入的网络接入协调器。 在一段时间内，至少一个第一分组由第一节点发送到第二节点。 第一分组可以包括应用重传服务的指示。 第一分组还可以包括与分组对应的长度的指示。 如果在第一时间段期间分组没有被第二节点接收，则第二节点可操作地向网络接入协调器发送重传请求。

公开(公告)号：US09641456B2

公开(公告)日：2017-05-02

申请号：US13632023

申请日：2012-09-30

Applicant: Broadcom Corporation

Inventor： Yitshak Ohana ,  Philippe Klein ,  Avi Kliger ,  Stephen Palm

IPC: H04L12/26 ,  H04L12/931 ,  H04L12/28

CPC classification number: H04L49/206 ,  H04L12/2801 ,  H04L49/351

Abstract: Apparatus and methods for reducing latency in coordinated networks are provided. The apparatus and methods relate to a protocol that may be referred to as the Persistent Reservation Request (“p-RR”), which may be viewed as a type of RR (reservation request). p-RR's may reduce latency, on average, to one MAP cycle or less. A p-RR may be used to facilitate Ethernet audiovisual bridging. Apparatus and methods of the invention may be used in connection with coaxial cable based networks that serve as a backbone for a managed network, which may interface with a package switched network.

公开(公告)号：US09554177B2

公开(公告)日：2017-01-24

申请号：US14018371

申请日：2013-09-04

Applicant: Broadcom Corporation

Inventor： Yitshak Ohana ,  Philippe Klein ,  Avi Kliger

IPC: H04J3/16 ,  H04L1/18 ,  H04L12/413 ,  H04N21/436 ,  H04L12/801

CPC classification number: H04N21/43615 ,  H04L1/1848 ,  H04L1/1874 ,  H04L12/413 ,  H04L47/34

Abstract: Systems and methods for transmitting packets over a network of communication channels are provide. A system according to the invention may include first and second nodes in communication with a coax backbone. The first node may further include a retransmission buffer. The system may also include a network access coordinator operative to coordinate access of the nodes to the coax backbone. In a time period at least one first packet is transmitted by the first node to the second node. The first packet may include an indication that retransmission service is applied. The first packet may also include a indication of the length corresponding to the packet. If, during the first time period the packet is not received by the second node, the second node is operative to send a retransmission request to the network access coordinator.

Abstract translation: 提供了通过通信信道的网络传送分组的系统和方法。 根据本发明的系统可以包括与同轴电缆主干通信的第一和第二节点。 第一节点还可以包括重传缓冲器。 该系统还可以包括可操作以协调节点到同轴电缆主干的接入的网络接入协调器。 在一段时间内，至少一个第一分组由第一节点发送到第二节点。 第一分组可以包括应用重传服务的指示。 第一分组还可以包括与分组对应的长度的指示。 如果在第一时间段期间分组没有被第二节点接收，则第二节点可操作地向网络接入协调器发送重传请求。

公开(公告)号：US20160099780A1

公开(公告)日：2016-04-07

申请号：US14965502

申请日：2015-12-10

Applicant: Broadcom Corporation

Inventor： Sanjay GOSWAMI ,  Avi Kliger ,  Edward Boyd ,  Yitshak Ohana ,  Leo Montreuil

IPC: H04B10/27 ,  H04L5/00

CPC classification number: H04B10/27 ,  H04L5/0007 ,  H04L5/001 ,  H04Q11/0067 ,  H04Q2213/1301 ,  H04Q2213/13389

Abstract: Embodiments include, but are not limited to, systems and methods for enabling Orthogonal Frequency Division Multiple Access (OFDMA) in the upstream in an Ethernet Passive Optical Network over Coax (EPoC) network. Embodiments include systems and methods for translating Ethernet Passive Optical Network (EPON) upstream time grants to OFDMA resources represented by individual subcarriers of an upstream OFDMA frame. In an embodiment, the translation of EPON upstream time grants to OFDMA resources ensures that Coaxial Network Units (CNUs) sharing an OFDMA frame do not use overlapping subcarriers within the frame. Embodiments further include systems and methods for timing upstream transmissions by the CNUs in order for the transmissions to be received within the same upstream OFDMA frame at a Fiber Coax Unit (ECU). Embodiments further include systems and methods for regenerating a data burst from OFDMA resources for transmission from the ECU to an Optical Line Terminal (OLT).

Abstract translation: 实施例包括但不限于在同轴（EPoC）网络中的以太网无源光网络中的上游中实现正交频分多址（OFDMA）的系统和方法。 实施例包括用于将以太网无源光网络（EPON）上行时间授权转换为由上行OFDMA帧的各个子载波所表示的OFDMA资源的系统和方法。 在一个实施例中，EPON上行时间授权到OFDMA资源的转换确保共享OFDMA帧的同轴网络单元（CNU）不使用该帧内的重叠子载波。 实施例还包括用于由CNU定时上行传输的系统和方法，以便在光纤同轴电缆单元（ECU）的同一上行OFDMA帧内接收传输。 实施例还包括用于从OFDMA资源再生数据突发的系统和方法，用于从ECU到光线路终端（OLT）的传输。

公开(公告)号：US09118444B2

公开(公告)日：2015-08-25

申请号：US14029204

申请日：2013-09-17

Applicant: Broadcom Corporation

Inventor： Avi Kliger ,  Yitshak Ohana ,  Niki Pantelias ,  Leo Montreuil ,  Jonathan S. Min ,  Edward Boyd ,  Mark Laubach ,  Victor Hou

IPC: H04B1/38 ,  H04L5/00

CPC classification number: H04L69/323 ,  H04L5/0046 ,  H04L5/0057 ,  H04L5/0092 ,  H04L5/0094 ,  H04L12/2861 ,  H04L27/2602 ,  H04L27/2627 ,  H04N21/42676 ,  H04N21/6118

Abstract: Embodiments include systems and methods for enabling a physical layer (PHY) link signaling channel between a network termination modem and a cable modem in a cable network. The PHY link signaling channel is embedded within the same multi-carrier channel as the data and enables PHY link up between the network termination modem and cable modem without involvement of higher layers (e.g., MAC). The PHY link signaling channel can be implemented in the downstream (from the network termination modem to the cable modem(s)) or in the upstream from a cable modem to the network termination modem. Embodiments are applicable to any known cable network, and particularly to cable networks implementing the DOCSIS and EPoC standards.

Abstract translation: 实施例包括用于在电缆网络中实现网络终端调制解调器和电缆调制解调器之间的物理层（PHY）链路信令信道的系统和方法。 PHY链路信令信道被嵌入在与数据相同的多载波信道中，并且使得PHY能够在网络终端调制解调器和电缆调制解调器之间链接，而不涉及较高层（例如，MAC）。 PHY链路信令信道可以在下游（从网络终端调制解调器到电缆调制解调器）或在电缆调制解调器的上游到网络终端调制解调器。 实施例可应用于任何已知的有线网络，特别适用于实现DOCSIS和EPoC标准的有线网络。