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：US09124477B2

公开(公告)日：2015-09-01

申请号：US14471301

申请日：2014-08-28

Applicant: BROADCOM CORPORATION

Inventor： Avraham Kliger ,  Tak Kwan Lee ,  Richard Stephen Prodan ,  Ba-Zhong Shen ,  Yitshak Ohana

IPC: H04K1/10 ,  H04L27/28 ,  H04L27/26 ,  H04L1/00 ,  H03M13/27 ,  H03M13/09 ,  H03M13/11 ,  H03M13/15 ,  H03M13/23 ,  H03M13/25 ,  H03M13/29

CPC classification number: H04L27/2627 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/258 ,  H03M13/2707 ,  H03M13/271 ,  H03M13/2789 ,  H03M13/2957 ,  H04L1/0042 ,  H04L27/2634

Abstract: A communication device includes a communication interface and a processor. In one example, the processor generates an orthogonal frequency division multiplexing (OFDM) symbol that includes information modulated within sub-carriers and then interleaves the sub-carriers of the OFDM symbol to generate an interleaved OFDM symbol. This interleaving of the sub-carriers operates to write the plurality of sub-carriers to rows of a two dimensional (2D) array and read the plurality of sub-carriers from columns of the 2D array. This interleaving also operates to read a column of the columns using a bit-reversed address of the column when the bit-reversed address is less than a number of the columns and using the address of the column when the bit-reversed address is greater than or equal to the number of the columns. The processor transmits, via the communication interface, the interleaved OFDM symbol to another communication device.

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。

公开(公告)号：US09008086B2

公开(公告)日：2015-04-14

申请号：US13940174

申请日：2013-07-11

Applicant: Broadcom Corporation

Inventor： Avraham Kliger ,  Yitshak Ohana ,  Moshe Tarrab

IPC: H04L12/28 ,  H04L29/06 ,  H04L29/08

CPC classification number: H04L69/14 ,  H04L12/2805 ,  H04L69/32

Abstract: A communication device having a Media Access Control (MAC) layer and a physical (PHY) layer may include a first physical channel for transferring at least one packet between the PHY layer and the MAC layer. The communication device may further include a second physical channel for transferring, to a transmitting device, a first table that indicates a number of bits to be loaded onto each of a plurality of tones and a second table that indicates a transmission power for the plurality of tones. The PHY layer may receive the at least one packet from the transmitting device over the plurality of tones and may transfer the at least one packet to the MAC layer via the first physical channel.

Abstract translation: 具有媒体访问控制（MAC）层和物理（PHY）层的通信设备可以包括用于在PHY层和MAC层之间传送至少一个分组的第一物理信道。 通信设备还可以包括第二物理信道，用于向发送设备传送指示要加载到多个音调中的每一个的多个比特的第一表，以及指示多个音调的发送功率的第二表 音调。 PHY层可以通过多个音调从发送设备接收至少一个分组，并且可以经由第一物理信道将至少一个分组传送到MAC层。

公开(公告)号：US10158457B2

公开(公告)日：2018-12-18

申请号：US14957458

申请日：2015-12-02

Applicant: BROADCOM CORPORATION

Inventor： Avraham Kliger ,  Yitshak Ohana

IPC: H04L5/00 ,  H04L12/927 ,  H04B3/54

Abstract: A device for coordinating frequency division multiplexing transmissions over a shared transmission medium may include a processor circuit configured to receive bandwidth requests from devices for transmissions over the shared transmission medium during a time period. A first bandwidth request may correspond to a point-to-multipoint transmission over the shared transmission medium. The processor circuit may be further configured to schedule bandwidth allocations on the shared transmission medium for the time period based at least in part on the bandwidth requests, where a first bandwidth allocation that corresponds to the first point-to-multipoint transmission is scheduled during the time period prior to other bandwidth allocations. The processor circuit may be further configured to transmit, over the shared transmission medium, an indication of the bandwidth allocations.

公开(公告)号：US09906325B2

公开(公告)日：2018-02-27

申请号：US14072991

申请日：2013-11-06

Applicant: BROADCOM CORPORATION

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

IPC: H04L1/00 ,  H04L27/26

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.

公开(公告)号：US09485093B2

公开(公告)日：2016-11-01

申请号：US14611674

申请日：2015-02-02

Applicant: Broadcom Corporation

Inventor： Philippe Klein ,  Yitshak Ohana

IPC: H04L9/00 ,  H04K1/00 ,  H04L9/08 ,  H04L9/32 ,  H04L29/06

CPC classification number: H04L9/0841 ,  H04L9/0822 ,  H04L9/3226 ,  H04L63/06 ,  H04L2463/062

Abstract: Systems, methods, and devices for pairing devices in a wired network are provided. One method includes receiving configuration request signals at multiple devices. The method further includes exchanging public keys between two devices, generating a shared key using the public keys, determining a protected channel key using the shared key, and establishing a protected channel between the devices using the protected channel key. The method further includes transferring privacy credentials from one device to the other using the protected channel and using the privacy credentials to pair another device to the network.

Abstract translation: 提供了用于在有线网络中配对设备的系统，方法和设备。 一种方法包括在多个设备处接收配置请求信号。 该方法还包括在两个设备之间交换公共密钥，使用公共密钥生成共享密钥，使用共享密钥确定受保护的信道密钥，以及使用受保护的信道密钥在设备之间建立受保护的信道。 该方法还包括使用受保护的信道将隐私凭证从一个设备转移到另一个设备，并使用隐私凭证将另一个设备配对到网络。

公开(公告)号：US20150358437A1

公开(公告)日：2015-12-10

申请号：US14830577

申请日：2015-08-19

Applicant: Broadcom Corporation

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

IPC: H04L29/08 ,  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 modern 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现代之间连接而不涉及较高层（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。