Patent application number | Description | Published |
20130004155 | Method of Providing End-to End Connection in a Unified Optical and Coaxial Network - A method in a network device for providing end-to-end connection in a unified optical and coax network, comprising receiving at an integrated node device (IND) a frame from an optical line terminal (OLT), wherein the frame comprises a data frame and a logical link identifier (LLID), and placing the data in a one of a plurality of buffers based on the LLID, wherein the one of the plurality of buffers corresponds to a customer premises equipment (CPE) associated with the LLID, wherein the data frame stays intact in a media access control (MAC) layer. | 01-03-2013 |
20130142513 | Apparatus and Method for Reducing Traffic on a Unified Optical and Coaxial Network - A coaxial line terminal (CLT) comprising an optical port configured to couple to an optical line terminal (OLT) via an optical distribution network (ODN), an electrical port configured to couple to a coaxial network unit (CNU) via an electrical distribution network, and a processor coupled to the optical port and the electrical port, wherein the processor is configured to receive from the OLT a plurality of first frames addressed to the CNU, receive from the OLT a plurality of second frames not addressed to the CNU, forward the first frames to the CNU, and prohibit the second frames from being forwarded to the CNU. | 06-06-2013 |
20130142514 | Apparatus and Method of Identifying a Transit Node in a Unified Optical-Coaxial Network - An optical line terminal (OLT) comprising a processor configured to assign a logical node identifier (LNID) to a coaxial line terminal (CLT), wherein the CLT intermediates between the OLT via an optical portion of a unified optical-coaxial network and a coaxial network unit (CNU) via an electrical network portion of the unified optical-coaxial network, and transmit a plurality of frames to the CLT via the optical portion of the unified optical-coaxial network, wherein the frames have a CNU address as a destination address, and wherein at least some of the frame comprise the LNID. Included is a method implemented at a CNU, the method comprising receiving a first frame comprising a LNID for a CLT, and transmitting a second frame comprising the LNID for the CLT, wherein the CNU is part of an Ethernet Passive Optical Network (EPON) over Coaxial (EPoC) network. | 06-06-2013 |
20130142515 | Apparatus and Method for Registering a Coaxial Network Unit on an Optical Network - A method comprising receiving a coaxial network unit (CNU) registration request from a CNU via a coaxial portion of a network, wherein the registration request is addressed to an optical line terminal (OLT), and forwarding the CNU registration request to the OLT via an optical portion of the network. Included is an OLT comprising a processor configured to receive a registration request including a logical node identifier (LNID) assigned to a coaxial line terminal (CLT) in a payload of the registration request, wherein the CLT intermediates between the OLT via an optical portion of a unified optical-coaxial network and a CNU via an electrical network portion of the unified optical-coaxial network, assign a logical link identifier (LLID) to the CNU, and send the LLID to the CNU via the CLT. | 06-06-2013 |
20130236177 | DELIVERING DOWNSTREAM DATA IN ETHERNET PON OVER COAX NETWORK - An apparatus comprising a processor configured to obtain one or more plant conditions regarding at least one of a plurality of customer premises equipment (CPEs) remotely coupled to the apparatus via electrical lines, and divide the plurality of coupled CPEs into a number of profile groups based on the one or more plant conditions, wherein each profile group comprises at least one CPE and supports one or more modulation orders. | 09-12-2013 |
20130236185 | EXTENDING EPON MULTI-POINT CONTROL PROTOCOL TO RUN ON ETHERNET PON OVER COAX NETWORKS - A method implemented by a middlebox comprising registering a customer premises equipment (CPE) in the middlebox, wherein the CPE is coupled to the middlebox via an electrical line, and facilitating registration of the CPE in a central office (CO) equipment coupled to the middlebox. | 09-12-2013 |
20130272703 | Method and Apparatus of Delivering Upstream Data in Ethernet Passive Optical Network Over Coaxial Network - An apparatus for interconnecting a fiber-optic network and a coax network comprising a coax line terminal (CLT) configured to couple to an optical line terminal (OLT) at the fiber-optic network and a plurality of coax network units (CNUs) at the coax network and to cache data received from the CNUs and forward the cached data to the OLT upon receiving a message from the OLT that assigns a transmission cycle for a specified CNU, wherein the CLT forwards the cached data to the OLT upon receiving the message regardless of whether the cached data corresponds to the specified CNU. | 10-17-2013 |
20130322882 | Method and Apparatus of Building a Coaxial Convergence Layer in Ethernet Passive Optical Network (PON) over Coaxial Network (EPoC) - An apparatus comprising a data framer comprising a physical layer protocol stack comprising a coax convergence layer, a coax framing layer next to the convergence layer, wherein the coax framing layer is configured to decompose and assemble data packets in a coax network, a coax coding layer next to the coax frame layer, wherein the coax coding layer is configured to protect the coax transmissions from impairments, a coax modulation layer next to the coax coding layer, wherein the coax modulation layer is configured to modulate the data according to a coax physical layer (PHY), and a radio frequency layer next to the coax modulation layer and configured to interface to an electrical medium for a coaxial network. | 12-05-2013 |
20130343761 | Access Equipment that Runs Ethernet Passive Optical Network (PON) or Ethernet PON Over Coax Network - An optical line terminal (OLT) comprising an optical transmitter, and an optical port coupled to the optical transmitter, wherein the optical port is configured to couple to a hybrid fiber coaxial (HFC) node via an optical fiber, and wherein the optical transmitter is configured to transmit analog signals to the HFC node via the optical fiber. Also included is a coaxial line terminal (CLT) comprising an electrical transmitter, and an electrical port coupled to the electrical transmitter, wherein the electrical port is configured to couple to a coaxial network unit (CNU) via an electrical cable, and wherein the electrical transmitter is configured to transmit radio frequency (RF) signals to the CNU via the electrical cable. | 12-26-2013 |
20140099113 | Managing Downstream Non-Broadcast Transmission in an Ethernet Passive Optical Network (EPON) Protocol over Coax (EPoC) Network - An OLT comprising an optical port configured to couple to an optical distribution network, a processor coupled to the optical port and configured to generate a DL-MAP based on non-broadcast downstream bandwidth allocations for a plurality of network units, wherein each of the downstream bandwidth allocations is not assigned to all of the network units, generate an EPON MPCP downstream gate message comprising the DL-MAP, and embed the DL-MAP in the EPON MPCP downstream gate message, and a transmitter coupled to the processor and the optical port, wherein the transmitter is configured to transmit the EPON MPCP downstream gate message to the network units via the PON. | 04-10-2014 |
20140133858 | Method and Apparatus of Managing Bandwidth Allocation for Upstream Transmission in a Unified Optical-Coaxial Network - A method of allocating bandwidth in a network comprising receiving a GATE message allocating a transmission time window in an optical portion of the network to a coaxial network unit (CNU) in a coax portion of the network, and generating a coax network resource map by mapping the transmission time window to communication channel resources in the coax portion of the network; and sending the coax network resource map to the CNU. | 05-15-2014 |
20140133859 | Method and Apparatus of Managing Bandwidth Allocation for Upstream Transmission in a Unified Optical-Coaxial Network - A method of allocating upstream bandwidth on a network comprising mapping an integer portion of a value obtained from a grant start time into a symbol number of a data frame on a coaxial segment of the network, wherein the value comprises the grant start time in units of a length of a data frame in the coaxial segment of a network, and wherein the length of the data frame comprises a preselected number of units of time defined in an optical segment of a network; mapping a fractional portion of the value obtained from the grant start time into a subcarrier number of the data frame; and mapping a grant length into a number subcarriers of the data frame. | 05-15-2014 |
20140178076 | Round Trip Time Aware Dynamic Bandwidth Allocation For Ethernet Passive Optical Network Over Coaxial Network - An apparatus comprising a receiver configured to receive a plurality of transmission requests from a plurality of end nodes via an optical network and an electrical network, a processor coupled to the receiver and configured to dynamically allocate optical transmission time slots to the end nodes according to measured RTTs of the end nodes, and a transmitter coupled to the processor and configured to transmit the allocated transmission time slots to the end nodes. Also disclosed is a method performed by an OLT comprising receiving a plurality of transmission requests from a plurality of network units via a PON and an electrical network, and allocating optical transmission time slots to the network units dynamically according to measured RTTs of the network units. | 06-26-2014 |
20140186025 | Method and Apparatus for Measuring Round Trip Delay in a Unified Optical-Coaxial Network - A method of determining a round trip delay time in a network comprising receiving a gate message allocating a transmission time window; retrieving a first timestamp from the gate message; setting a first clock to the time corresponding to the first timestamp, and wherein the first clock runs synchronously with a second clock recovered from a received data stream; sending upstream, after a time interval comprising a grant start time included in the transmission time window offset by a random delay time, a registration request message, wherein the registration request message includes a second timestamp obtained from the first clock; and determining a round trip delay (RTT) from a time the registration request message is received and the second timestamp. | 07-03-2014 |
20140304500 | Authentication and Initial Key Exchange in Ethernet Passive Optical Network over Coaxial Network - A method comprising generating an updated security key upon expiration of a key exchange timer, transferring the updated security key to a Coaxial Network Unit (CNU), retaining an original key, wherein the updated security key comprises a different key identification number than the original key, accepting and decrypting upstream traffic that employs either the original key or the updated key, after transferring the updated security key to the CNU, creating a key switchover timer, before the key switchover timer expires, verify that upstream traffic transferred from the CNU on a logical link uses the updated security key, and when upstream traffic is encrypted using the updated security key, begin using the updated security key to encrypt downstream traffic and clear the key switchover timer. | 10-09-2014 |
20140314418 | Allocating Orthogonal Frequency-Division Multiple Access (OFDMA) Resources In Ethernet Passive Optical Network (EPON) Over Coaxial (EPOC) - A method implemented in a Fiber Coaxial Unit (FCU) comprising receiving a plurality of Ethernet Passive Optical Network (EPON) report messages from a plurality of Coaxial Network Units (CNUs) across a coaxial network, receiving an EPON gate message comprising Time Quanta (TQ) information indicating an upstream transmission time grant for the FCU across the optical network, translating the TQ based upstream transmission time grants to OFDM resource block grants in a time domain and in a frequency domain across the coaxial network for each CNU based on the configurable constants, and transmitting an EPON over Coaxial (EPoC) gate message to each CNU, wherein each EPoC gate message comprises a CNU profile indicating the Orthogonal Frequency-Division Multiplexing (OFDM) resource block grants for the an associated CNU and a start time. | 10-23-2014 |
20140348179 | Allocating Orthogonal Frequency-Division Multiple Access (OFDMA) Resources In Data Over Cable Services Interface Specificaton (DOCSIS) Networks - A Cable Modem Termination System (CMTS) comprising a receiver configured to receive a plurality of upstream transmission request messages from a plurality of coaxial units via an electro-optical network, wherein the upstream transmission request messages each request permission to transmit a specified amount of data, a processor coupled to the receiver and configured to allocate Orthogonal Frequency-Division Multiplexing (OFDM) minislots to each coaxial unit based on the amount of data requested in the associated upstream transmission request message, and a transmitter coupled to the processor and configured to transmit at least one Uplink Allocation Map (UL-MAP) message to indicate minislot allocations to the coaxial units. | 11-27-2014 |
20140365768 | Extending Data Over Cable Service Interface Specification (DOCSIS) Provisioning of Ethernet Passive Optical Network (EPON) (DPoE) to EPON over Coax (EPoC) Multicast Key Management - Disclosed herein are mechanisms to support the management of multicast keys for a multicast group comprising one or more optical line terminals (OLTs), one or more fiber to coax units (FCUs), and a plurality of coax network units (CNUs). The disclosed embodiments may support the management of multicast keys over optical and coaxial networks. In some embodiments, an FCU may facilitate communication of operations administration and maintenance (OAM) messages containing multicast keys from one or more OLTs to one or more CNUs (typically a plurality of CNUs). Some embodiments may employ one multicast key over both the optical network and coaxial network. Other embodiments may employ an optical domain multicast key over the optical network and an electrical domain multicast key over the coaxial network. Embodiments may comprise adding a first CNU to a multicast group as well as adding subsequent CNUs to the multicast group. | 12-11-2014 |
20140376916 | Method and Apparatus of Delivering Upstream Data in Ethernet Passive Optical Network Over Coaxial Network - An apparatus for interconnecting a fiber-optic network and a coax network comprising a coax line terminal (CLT) configured to couple to an optical line terminal (OLT) at the fiber-optic network and a plurality of coax network units (CNUs) at the coax network and to cache data received from the CNUs and forward the cached data to the OLT upon receiving a message from the OLT that assigns a transmission cycle for a specified CNU, wherein the CLT forwards the cached data to the OLT upon receiving the message regardless of whether the cached data corresponds to the specified CNU. | 12-25-2014 |