Patent application number | Description | Published |
20080267089 | Passive Optical Network Topology Estimation - An apparatus comprising an optical line terminal (OLT) in communication with a plurality of optical network terminals (ONTs) via an optical distribution network (ODN), and a passive optical network (PON) topology estimator coupled to the OLT or at least one of the ONTs, wherein the PON topology estimator is configured to model a PON topology. Also disclosed is an apparatus comprising at least one processor configured to implement a method comprising defining a PON topology comprising a plurality of network parameters, a plurality of component parameters, and at least one relationship between the network parameters and the component parameters, acquiring values for the network parameters, and determining the component parameters using the network parameters and the mathematical equations. | 10-30-2008 |
20080267625 | Multi-Rate Multi-Wavelength Optical Burst Detector - An apparatus comprising an optical amplifier, an optical processor coupled to the optical amplifier, and a plurality of optical detectors coupled to the optical processor, wherein each optical detector is a single-rate detector. Also disclosed is an apparatus comprising at least one processor configured to implement a method comprising amplifying an optical signal comprising a plurality of rates, copying the amplified optical signal into a plurality of optical signals, and detecting a single rate on each of the copied optical signals. Included is a method comprising amplifying a first optical signal that is not compatible with a plurality of detectors, splitting the first optical signal into a plurality of second optical signals, and ignoring portions of the second optical signals to make the second optical signals compatible with the detectors. | 10-30-2008 |
20080267627 | Passive Optical Network with Partially-Tuned Lasers - A passive optical network (PON) component comprising a processor coupled to a plurality of receivers, the processor configured to monitor a plurality of drifting laser wavelengths and cause the drifting laser wavelengths to be tuned to a plurality of pass-bands. Also disclosed is an optical network unit (ONU) comprising a receiver, a transmitter coupled to the receiver, and a partially-tunable laser coupled to the transmitter and having a drifting laser wavelength, wherein the drifting laser wavelength is periodically tuned to one of a plurality of pass-bands. Included is a method comprising monitoring a plurality of drifting laser wavelengths associated with a plurality of pass-bands, and reconfiguring a plurality of time division multiple access (TDMA) timeslots when one of the drifting laser wavelengths migrates from one pass-band to another pass-band. | 10-30-2008 |
20080267634 | 9b10b Code for Passive Optical Networks - An apparatus comprising at least one processor configured to implement a method comprising receiving an incoming data stream, converting the incoming data stream into an outgoing data stream comprising a plurality of ten-bit codepoints each comprising nine data bits, and transmitting the outgoing data stream. Also disclosed is an apparatus comprising a nine-bit data block/ten-bit codepoint converter, an optical receiver coupled to the nine-bit data block/ten-bit codepoint converter, and an optical transmitter coupled to the nine-bit data block/ten-bit codepoint converter. | 10-30-2008 |
20080298806 | Interleaving for 10G GPON - An apparatus comprising a plurality of data framers, a time division multiplexer coupled to the data framers, and an optical transmitter coupled to the time division multiplexer. Also disclosed is an apparatus comprising an optical receiver, a time division demultiplexer coupled to the optical receiver, and a data framer coupled to the time division demultiplexer. Also disclosed is an apparatus comprising at least one component configured to implement a method comprising combining a first plurality of data frames corresponding to a first plurality of channels into a first plurality of combined data frames using time division multiplexing and transmitting the first combined data frames over a single optical channel. | 12-04-2008 |
20090047013 | In-Band Optical Frequency Division Reflectometry - An apparatus comprising an optical transmitter coupled to an optical fiber, and an optical receiver coupled to the optical fiber, wherein the transmitter is configured to transmit a test signal data pattern and user data into the optical fiber, and wherein the receiver is configured to receive a reflection of the test signal data pattern. Also disclosed is a network component comprising a processor configured to implement a method comprising promoting the transmission of an optical test signal data pattern into an optical fiber, wherein the test signal data pattern creates a radio frequency (RF) tone, and detecting a reflection of the RF tone in the optical fiber. | 02-19-2009 |
20090060507 | Backward Compatible PON Coexistence - A network comprising a first optical line terminal (OLT), and a second OLT in communication with the first OLT, at least one first-type optical network unit (ONU), and at least one second-type ONU. Included is an OLT configured to implement a method comprising forwarding a first downstream data from a first-type OLT to at least one first-type ONU, and transmitting a second downstream data to at least one second-type ONU. Also included is a method comprising adding at least one second-type ONU to a passive optical network (PON) comprising a first-type OLT and at least one first-type ONU without removing the first-type OLT from the PON. | 03-05-2009 |
20090175619 | Burst Power Measurements Using Averaged Power Measurement - An apparatus comprising an individual optical power level calculation (IOPLC) module and a transceiver coupled to the IOPLC module and configured to communicate with a plurality of optical network units (ONUs). Also disclosed is an apparatus comprising a control and management (CM) module, an average power level measurement (APLM) module coupled to the CM module, a first transceiver coupled to the CM module and configured to communicate with an optical line terminal (OLT), and a second transceiver coupled to the CM module and the APLM module, and configured to communicate with a plurality of ONUs. | 07-09-2009 |
20090263130 | Gigabit Passive Optical Network Transmission Convergence Extension for Next Generation Access - An apparatus comprising a data framer configured to frame a data stream into a plurality of frames each comprising a plurality of fields sized to align the frames with a word boundary greater than or equal to about four bytes long, and an optical transmitter coupled to the data framer and configured to transmit the frames. Included is an apparatus comprising at least one component configured to implement a method comprising encapsulating a data stream with at least one Gigabit Passive Optical Network (GPON) Encapsulation Method (GEM) payload aligned with a word boundary at least about four bytes long, encapsulating the GEM payload with a GPON Transmission Convergence (GTC) frame aligned with the word boundary, and transmitting the GTC frame. | 10-22-2009 |
20090276681 | Upgraded Codeword Lock State Machine - An apparatus comprising a Forward Error Correction (FEC) processor coupled to an optical receiver, wherein the FEC processor is configured to compare a plurality of received blocks to a plurality of FEC codeword blocks comprising a plurality of parity blocks, and upon detecting a misaligned block in the received blocks, compare at least some of the remaining received blocks to the parity blocks. Also included is an apparatus comprising at least one component configured to implement a method comprising receiving a plurality of blocks, wherein the quantity of received blocks is equal to a quantity of blocks in a FEC codeword, selecting one of the received blocks, determining whether the selected block is aligned with the FEC codeword, and determining whether the remaining blocks correspond to the FEC codeword when the selected block is not aligned with the FEC codeword. | 11-05-2009 |
20090304386 | Compact Virtual Local Area Network Mapper for the Gigabit-Passive Optical Network Optical Network Management and Control Interface - An apparatus comprising a Virtual Local Area Network (VLAN) mapper associated with a plurality of interfaces and a plurality of ports corresponding to the interfaces, wherein the VLAN mapper is configured to direct a plurality of packets between the interfaces and the corresponding ports based on a VLAN mapping table. Also included is an apparatus comprising at least one processor configured to implement a method comprising receiving a packet via an interface, determining whether the packet is tagged, mapping the packet to a port corresponding to the interface using a mapping table if the packet is tagged, and mapping the packet to a designated port using a default marking attribute if the packet is untagged. | 12-10-2009 |
20100002592 | Ethernet Media Access Control Organization Specific Extension - An apparatus comprising a data framer configured to frame a Media Access Control (MAC) control message for transmission, the MAC control message comprising an organization specific identifier (OUI) and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by the OUI, and wherein the value field comprises information related to operation, administration, and maintenance (OAM) features of a network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an OAM message comprising a plurality of organization-specific TLVs and an organization unique identifier (OUI) that indicates an organization responsible for the format of the TLV, and transmitting the OAM message. | 01-07-2010 |
20100104285 | Collecting Status From a Partner Management Domain - An apparatus comprising a Generic Status Portal (GSP) configured to grant access to a Managed Entity (ME) via an Optical Network Terminal (ONT) Management and Control Interface (OMCI), wherein the ME comprises status information about a non-OMCI management domain at the ONT. Also included is an apparatus comprising at least one processor configured to implement a method comprising initializing an ONT ME, adding status information associated with a managed function to the ONT ME, indicating a status information update of the ONT ME, and providing the status information via an OMCI. Included is a method comprising providing status and performance monitoring (PM) information from an ONT via an OMCI at the ONT, wherein the status and PM information is associated with at least one managed function instance of at least one non-OMCI domain. | 04-29-2010 |
20100110898 | Optical Network Terminal Management and Control Interface over Ethernet - An apparatus comprising a data framer configured to frame an external protocol extension message for transmission, the external protocol extension message comprising a header that indicates an external protocol extension and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by a specific organization, and wherein the value field comprises information related to protocol functions external to the network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an external protocol extension message comprising a plurality of TLVs and a header that indicates an external protocol extension, and transmitting the external protocol message. | 05-06-2010 |
20100111537 | Passive Optical Networks with Mode Coupling Receivers - An apparatus comprising a mode coupler configured to couple a plurality optical signals into a plurality of modes, and a receiver coupled to the mode coupler and configured to detect the modes to obtain the optical signals, wherein the optical signals are coupled from single mode fibers. Also disclosed is an apparatus comprising a plurality of single mode waveguides configured to transport a plurality of single mode signals, and a detector coupled to the single mode waveguides and configured to detect the single mode signals, wherein the single mode signals are substantially coupled without loss from the single mode waveguides to the detector. Also disclosed is a method comprising receiving a plurality of single mode optical channels, coupling the single mode optical channels into a multimode channel, and detecting the optical modes corresponding to the channels in the multimode channel. | 05-06-2010 |
20100172647 | Field Framing With Built-In Information - An apparatus comprising a frame alignment processor coupled to a receiver, wherein the frame alignment processor is configured to align a first frame and a second frame in the receiver by matching a first synchronization (sync) pattern predicted using a first sync field in the first frame with a second sync pattern obtained from a second sync field in the second frame. Included is an apparatus comprising at least one component configured to implement a method comprising receiving a first frame, subsequently receiving a second frame that was transmitted after the first frame, predicting a first sync pattern from a first sync field in the first frame, obtaining a second sync pattern from a second sync field in the second frame, and determining that the first frame and the second frame are aligned when the first sync pattern matches the second sync pattern. | 07-08-2010 |
20100215369 | Upgraded Bandwidth Map for Ten Gigabit Passive Optical Network - An apparatus comprising an optical line terminal (OLT) configured to transmit a bandwidth map (BWmap) for a plurality of burst signals to be transmitted by a plurality of optical network units (ONUs), wherein the BWmap comprises a plurality of allocations, and wherein each allocation comprises a start time for the allocation, a grant size for the allocation, and a header error correction (HEC) for the allocation. | 08-26-2010 |
20110008055 | Combined Burst Mode Level and Clock Recovery - An apparatus comprising an optical receiver configured to receive an optical signal, and a combined level and clock recovery circuit coupled to the optical receiver and configured to update a signal threshold and a clock phase substantially simultaneously. Also included is an apparatus comprising at least one processor configured to implement a method comprising recognizing reception of a signal, and adjusting a threshold and a clock phase associated with the signal using a rising time for the signal and a falling time for the signal. Also included is a method comprising receiving a signal, and adjusting a threshold level of the signal to establish level recovery using a clock recovery scheme. | 01-13-2011 |
20110029773 | Optical Network Terminal Management Control Interface-Based Passive Optical Network Security Enhancement - A network component comprising at least one processor coupled to a memory and configured to exchange security information using a plurality of attributes in a management entity (ME) in an optical network unit (ONU) via an ONU management control interface (OMCI) channel, wherein the attributes provide security features for the ONU and an optical line terminal (OLT). Also included is an apparatus comprising an ONU configured to couple to an OLT and comprising an OMCI ME, wherein the OMCI ME comprises a plurality of attributes that support a plurality of security features for transmissions between the ONU and the OLT, and wherein the attributes are communicated via an OMCI channel between the ONU and the OLT and provide the security features for the ONU and the OLT. | 02-03-2011 |
20110116799 | Tunable Coherent Optical Time Division Reflectometry - An apparatus comprising an optical transmitter, a coarse tuner coupled to the optical transmitter and having a first tuning range, a fine tuner coupled to the optical transmitter and having a second tuning range smaller than and within the first tuning range, a wavelength division demultiplexer coupled to the optical transmitter and to a plurality of optical fibers, and a detector coupled to the optical transmitter and the wavelength division demultiplexer. A network component comprising at least one processor configured to implement a method comprising detecting an Optical Time Domain Reflectometry (OTDR) signal spectrum that has a modulated pattern, and detecting a reflected OTDR signal spectrum that has a shifted modulated pattern comprising a frequency shift with respect to the OTDR signal spectrum and a time shift proportional to the frequency shift. | 05-19-2011 |
20110142437 | Header error control protected ten gigabit passive optical network downstream frame synchronization pattern - An apparatus comprising an optical line terminal (OLT) configured to couple to a plurality of optical network units (ONUs) and transmit a plurality of downstream frames to the ONUs, wherein each of the downstream frames comprises a plurality of forward error correction (FEC) codewords and a plurality of additional non-FEC encoded bytes that comprise synchronization information that is protected by Header Error Control (HEC) code. An apparatus comprising a processing unit configured to arrange control data, user data, or both into a plurality of FEC codewords in a downstream frame and arrange a physical synchronization sequence (PSync), a superframe structure, and a Passive Optical Network-identifier (PON-ID) structure in a plurality of additional non-FEC encoded bytes in the downstream frame, and a transmission unit configured to transmit the FEC codewords and the additional non-FEC encoded bytes in the downstream frame within a 125 microsecond window. | 06-16-2011 |
20120045207 | GIGABIT PASSIVE OPTICAL NETWORK TRANSMISSION CONVERGENCE EXTENSION FOR NEXT GENERATION ACCESS - An apparatus including a data framer and an optical transmitter. The data framer is used to frame a data stream into a plurality of frames, each of the frames includes a plurality of fields sized to align the frames with a word boundary greater than or equal to four bytes long. The optical transmitter is coupled to the data framer and is used to transmit the frames. Included is an apparatus with at least one component for implementing a method for encapsulating a data stream with at least one Gigabit Passive Optical Network (GPON) Encapsulation Method (GEM) payload aligned with a word boundary of at least four bytes long, encapsulating the GEM payload with a GPON Transmission Convergence (GTC) frame aligned with the word boundary, and transmitting the GTC frame. | 02-23-2012 |
20120128155 | METHOD AND APPARATUS FOR PROVIDING SECURITY IN A PASSIVE OPTICAL NETWORK - An apparatus and method for providing security in a Passive Optical Network (PON) using an Enhanced Security Control management entity (ME). In one embodiment, an optical network unit (ONU) comprising: a processor coupled to a memory and configured to exchange security information between the ONU and an optical line terminal (OLT) by using a plurality of attributes in an Enhanced Security Control management entity (ME) in the ONU via an ONU management control interface (OMCI) channel; wherein the plurality of attributes comprise: an OLT crypto capabilities attribute, an ONU selected crypto capabilities attribute, an OLT random challenge table attribute, an ONU authentication result table attribute, an ONU random challenge table attribute, an OLT authentication result table attribute, and a master session key name attribute. | 05-24-2012 |
20120155877 | Optical Network Terminal Management and Control Interface over Ethernet - An apparatus comprising a data framer configured to frame an external protocol extension message for transmission, the external protocol extension message comprising a header that indicates an external protocol extension and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by a specific organization, and wherein the value field comprises information related to protocol functions external to the network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an external protocol extension message comprising a plurality of TLVs and a header that indicates an external protocol extension, and transmitting the external protocol message. | 06-21-2012 |