Harmonic, Inc.

Bigband Networks Inc.

Arris Enterprises LLC

Arris Group, Inc.

Amir Leventer

Nery Strasman

Ran M Oz

Michael W Patrick

Nitsan S Elfassy

Jeremy Cole Rosenberg

Lior Assouline

Mark Lutsker

Amit Hildeshaim

Daniel Ginsburg

Robert Gaydos

Nimrod Ben-Natan

Adi Bonen

Shai Benjamin

John Reister

Gilat Avieli

Asi Elad

Jeremey C Rosenberg

S V Vasudevan

Mordechai Finkelstein

Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). Multiprotocol Label Switching (MPLS) Transport Stream tunnels are employed on Ethernet links between the core routing engine (CRE) and the one or more core servers (CSs).

Virtual converged cable access platform

Supporting a scalable and Highly Available (HA) service platform. The service platform may be a virtual Cable Modem Termination System (vCMTS), a Passive Optical Network (PON), or a Broadband Network Gateway (BNG). A software component receives, from the service platform, an update about a particular unit of equipment, such as a cable modem (CM), Optical Network Unit (ONU)/Optical Network Terminal (ONT), or customer premises equipment (CPE). In response to receiving the update, the software component provides, to at least one edge router, route data for the particular unit of equipment. The route data informs the edge router of a next hop network address for a network address of the unit of equipment. The edge router is not and need not be provided with either (a) any Address Resolution Protocol (ARP) data for the particular unit of equipment and (b) any Neighbor Discovery (ND) data for the particular unit of equipment.

Support for a scalable and highly available (HA) service platform

Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). Each physical or virtual compute server (CS) connects to the core routing engine (CRE) with a Link Aggregation Group (LAG) of two or more Ethernet links.

Virtual converged cable access platform (CCAP)

Exchanging encrypted packet payloads between a cable headend and a Remote MACPHY device. A single device executes a cable modem termination system (CMTS) implemented in software and not hardware. The software-implemented CMTS (i.e., a virtual CMTS) instantiates a tunnel to the Remote MACPHY device. The virtual CMTS encrypts the payloads of one or more packets and transmits those packets over the tunnel to the Remote MACPHY device. In similar fashion, the Remote MACPHY device may send packets with encrypted payloads to the virtual CMTS over the tunnel. In this way, encryption is not performed on a hop by hop basis, thereby allowing the payloads of packets to remain encrypted at all times during transmit through the tunnel.

Secured transport in remote MAC/PHY DAA architecture

Supporting a scalable and Highly Available (HA) virtual Cable Modem Termination System (vCMTS). A software component receives, from the vCMTS, an update about a particular cable modem (CM) or customer premises equipment (CPE). The update may be sent in response to the particular CM or CPE becoming online or offline. In response to receiving the update, the software component provides, to at least one edge router, route data for the particular CM or CPE. The route data informs the edge router of a next hop network address for a network address of the particular CM or CPE. The edge router is not and need not be provided with either (a) any Address Resolution Protocol (ARP) data for the particular CM or CPE and (b) any Neighbor Discovery (ND) data for the particular CM or CPE.

Support for a scalable and high availability (HA) virtual cable modem termination system (VCMTS)

Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). A combination of the core routing engine (CRE) and the one or more physical or virtual compute servers (CS) emulate a single Layer 3 CMTS having a single point of management.

Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more physical or virtual compute servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more physical or virtual compute servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.

Virtual converged cable access platform (CCAP) core

A method for obtaining and utilizing internet protocol (IP) subnet information, the method may include obtaining by a layer two cable modem termination system (L2 CMTS) information about IP subnets that comprise DHCP leased IP addresses assigned to devices serviced by the L2 CMTS; and maintaining, by the L2 CMTS and based on the information about the IP subnets, a data structure that reflects the IP subnets that comprise the IP addresses that are allocated to the devices serviced by the L2 CMTS.

Obtaining internet protocol subnet scope

Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more core servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more core servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.

A system and method for triggering media stream modifications and for modifying media streams accordingly. The method includes a first step of determining, by an apparatus, an opportunity to modify a compressed media stream, by a media stream modifier, to provide a modified media stream that includes additional video content; and a second step of generating modification information representative of said determination, to be further transmitted to the media stream modifier.

Method and system for timing media stream modifications

A method for providing service to an end user, the method includes: converting images to multiple end user device readable pictures; receiving a request from an end user to display at least one image, wherein the request is conveyed over a TVOD infrastructure; and providing the end user with a stream of end user device readable pictures that includes at least one end user device readable picture that corresponds to the requested image.

Method and system for providing interactive services using video on demand infrastructure

The invention is directed to a method for providing client-server data transfer over a Hybrid Fiber Coax network, comprising interfacing, at a client, a channel, wherein the channel is one of a video channel and a DOCSIS channel, intercepting a content request made from an end-user computing device, notifying a server of a relevant intercepted message via one of using an interactive channel and tagging the request, selecting content sent by the server over the channel, processing the content selected so as to return it to its IP traffic format, and forwarding the content in its IP traffic format to the end-user computing device.

Methods and system for efficient data transfer over hybrid fiber coax infrastructure

A device and a method for providing programs to multiple end user devices. The method includes: providing to multiple end user devices, via an edge device, at least one type of media stream out of unicast media stream and a multicast media stream; wherein the at least one type of media stream convey a group of programs; receiving a request from a first end user device to view a first program that belongs to the group of programs; and selectively switching, in response to bandwidth constraints imposed on a communication path coupled to the edge device, a type of a media stream that conveys the first program to a second end user device.

Method and device for providing programs to multiple end user devices

The invention provides a system and a method for providing a multiplexed sequence, the multiplexed sequence including at least one sequence of basic media data units/modified basic media data units, the system and method are responsive to at least one characteristics (such as quality, quality degradation, compression level and the like, a combination of at least two of the characteristics) of at least of some of the basic media data units. The invention provides a method for generating a multiplexed sequence, the method including the steps of: receiving at least one basic media data unit sequence; determining a modification priority of a plurality of received basic media data units belonging to the at least one basic media data unit sequence; selecting basic media data units to be modified, in response to the modification priority; modifying each of the selected basic media data units; wherein a modified selected basic media data unit is smaller than the corresponding selected basic media data unit; and multiplexing the modified selected basic media data units and non-selected basic media data units to provide the multiplexed sequence.

Method and system for prioritized bit rate conversion

The invention provides a method for compressing a group of basic media data units, the method comprising the steps of: (a) receiving the group of basic media data units; (b) for each basic media data unit of the group performing the steps of: (b1) partially decoding the basic media data unit; (b2) determining whether to reduce the size of the basic media data unit of the received block in view of a predefined relationship between a predefined compression ratio (PCRA) and a residual ratio (RR); (b3) reducing the size of the basic media data unit, in view of the determination, such that an optimal reduction to quality degradation of the basic media data block is achieved; and (b4) partially encoding the basic media data unit.

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Kfar Saba, Israel

Amir Leventer