Verizon Patent and Licensing Inc.

Zte Corporation

Zte (usa) Inc.

Denis Andreyevich Khotimsky

DeZhi Zhang

Eugene DeFrancisci

Weiliang Zhang

Liquan Yuan

Rajesh Yadav

Dan Geng

Dezhi Zhang

Gregory K Sherrill

LiQuan Yuan

Wenjia Wang

Zigmunds Andis Putnins

SongLin Zhu

ChangLei Li

Phillip S Myers

An example method includes storing status data for a network communication device connected to a host device by a pluggable connector in a memory of the network communication device. A change in the status data is signaled using a signal on the pluggable connector. The status data is sent from the memory of the network communication device to the host device over the pluggable connector. The status data is displayed on a local indicator of the host device.

Remote status indicators for pluggable device

A method includes determining a first power level by performing a first series of measurements based on a first series of burst transmissions from an optical transmitter of an optical network unit (ONU) in an optical network. Bursts in the first series of burst transmissions include a first modified preamble. A second power level is determined by performing a second series of measurements based on a second series of optical burst transmissions. Bursts in the second series of burst transmissions include a second modified preamble. A first power level (P) and a second power level (P) are determined based on the first power level and the second power level and one or more additional parameters associated with transmissions from the optical transmitter are determined based on Pand P. Based on the additional parameters, it is determined whether the optical transmitter complies with specifications of the optical network.

Systems and methods for measurement of optical parameters in an optical network

A method may include transmitting an open contention-based grant to optical network units (ONUs) and receiving, from at least one of the ONUs, a response to the open contention-based grant. The method may also include determining whether a collision has occurred in response to the open contention-based grant. The method may further include provisioning grants to ONUs in response to determine that a collision has occurred.

Systems and methods of open contention-based grant allocations

An optical device may include a communication interface and processing logic configured to receive a broadcast contention-based allocation from an optical line terminal (OLT), wherein the contention-based allocation is associated with activation of the optical device in an optical network. The processing logic may also be configured to transmit a message in response to the contention-based allocation, wherein the message includes information identifying the optical device and receive, from the OLT, an assignment message or a feedback message in response to the transmitted message. The processing logic may be further configured to execute a retransmission procedure based on the assignment or feedback message indicating that a collision occurred.

Systems and methods for collision resolution during ONU activation

A method may include determining a number of categories associated with optical network units (ONUs) in a system and assigning an allocation identifier to each of the respective categories. The method may also include transmitting the assigned allocation identifiers to the ONUs and transmitting a contention-based allocation to the ONUs, wherein the contention-based allocation includes a first one of the allocation identifiers.

Dynamic assignment of broadcast allocation identifiers

A device can include a first component to receive, from a first network device, a first upstream optical signal. The first upstream optical signal can be associated with a designated time slot of the first network device. The device can include a second component to receive, from the first component, the first upstream optical signal. The second component can split the first upstream optical signal into a second upstream optical signal and a third upstream optical signal. The second component can provide, to a second network device, the third upstream optical signal. The third upstream optical signal is not associated with the designated time slot of the first network device.

Emulating rogue optical network unit behavior in a passive optical network

A method, a device, and a non-transitory storage medium provide to transmit to an optical network unit, a first message that queries the optical network unit for managed information bases supported by the optical network unit; receive a second message from the optical network unit, which indicates the managed information bases supported by the optical network unit; compare the managed information bases supported by the optical line terminal with the managed information bases supported by the optical network unit; select one of the managed information bases supported by the optical line terminal that is also supported by the optical network unit; transmit to the optical network unit, a third message, which indicates the selected managed information base supported by the optical line terminal and the optical network unit; and receive a fourth message from the optical network unit, which indicates whether the selected managed information bases is successfully instantiated.

Dynamic selection of management information bases

Techniques for unified optical network unit power management in a passive optical network include operating an optical network unit (ONU) in a first state in which a transmitter of the ONU is turned off and a receiver of the ONU is turned on, operating the ONU in a second state in which both the transmitter and the receiver are turned off, and transitioning the ONU directly between the first state and the second state, based on a power management rule.

Optical network unit power management in passive optical networks

A multi-wavelength passive optical network (MW-PON) includes an optical distribution network (ODN), a plurality of optical line terminations (OLTs) and an optical network unit (ONU). The ODN includes a trunk fiber, one or more branching elements, and a plurality of distribution fibers. Each OLT is associated with an individual bi-directional wavelength channel using a corresponding single downstream wavelength and a corresponding single upstream wavelength, and supporting a specific downstream line rate and one or more distinct upstream line rates. The ONU is communicatively coupled to a respective distribution fiber, being tunable over a specific range of downstream wavelengths and a specific range of upstream wavelengths, and supporting a specific downstream line rate and a specific upstream line rate. The OLT is configured to assemble a broadcast management message conveying information about bi-directional wavelength channels in said MW-PON system and transmit said message downstream over the associated bi-directional wavelength channel.

Channel map for optical network unit activation and rogue behavior prevention

An apparatus and method for receiving and transmitting data is disclosed. In one exemplary embodiment, the method includes: controlling a data source output source frames at a first data rate; receiving a source frame at an encoder at the first data rate; reading a fixed number of n-byte data blocks from the source frame, wherein n is an integer; appending an (m-n)-byte parity block to each n-byte data block to form the fixed number of m-byte first code words, wherein m is an integer greater than n; prepending to the fixed number of m-byte first code words a first prefix to form an error correcting physical frame, the first prefix including an error correction indicator set to a first value and an extra data indicator set to a second value; and transmitting the error correcting physical frame at a fixed transmit data rate.

Method and apparatus of downstream forward error correction on-off control in XG-PON1 and NG-PON2 TWDM-PON systems

A method of Noisy Window and associated management messages to support set splitting if activating ONUs with uncalibrated transmitter, offering a power grant for unmodulated upstream transmission, measuring the average received optical power in all upstream wavelength channels and providing downstream indication of the upstream wavelength channel with abnormally high average received power.

Growing community of inventors

Westborough, MA, United States of America

Denis Andreyevich Khotimsky