Broadcom Corporation

Future Wei Technologies, Inc.

Huawei Technologies Co., Limited

Intel Corporation

At+t Corp.

Huaiyu Zeng

Xiang Liu

Frank J Effenberger

Nelson Ray Sollenberger

Jes Thyssen

Juin-Hwey Chen

Yuanqiu Luo

Andy Shen

Xianxian Zhang

Li Fung Chang

Arie Heiman

Hongwei Kong

Guozhu Long

Lei Zhou

Lin Huang

Shuchang Yao

Qian C Xie

Shengming Ma

Jack Winters

Xiaoxin Qiu

Yue Chen

Xianbo Dai

Ye Li

Ning Cheng

Baoguo Yang

Jie Lai

Prakash C Khanduri

Yongqian Wang

Haixiang Liang

Yossy Pruzanski

Yueheng Sun

Amod V Dandawate

Chunming Han

Linlin Li

Jiang Qi

Liang Song

Xiao Sun

Arie Heimann

Arkady Molev-Shteiman

A method comprises generating a PON frame comprising a plurality of FEC codewords, the FEC codewords comprise a first codeword, and the first codeword comprises a PSB; and transmitting the PON frame. A method comprises receiving a PON frame comprising a plurality of FEC codewords, the FEC codewords comprise a first codeword, and the first codeword comprises a PSB; and processing the PON frame.

Passive optical network (PON) frame design

A communication method and device are provided for communication in a point-to-multi-point communication network. A communication method includes receiving, by a node of a plurality of multi-point nodes, a transmission frame comprising a header including a repetition information and a data section comprising multiple modulation symbols, with at least two repeated modulation symbols that are repeated to represent a first modulation symbol; extracting, by the node, the repetition information of the header; recovering, by node, the amplitude of each modulation symbol of the at least two repeated modulation symbols; and combining, by the node, the amplitudes of the at least two repeated modulation symbols, based on the repetition information, to reconstruct the first modulation symbol represented by the at least two repeated modulation symbols.

Communication method and apparatus in a point-to-multipoint communication network

An ONU is provided. The ONU comprises a receiver configured to receive a first PON frame from an OLT, the first PON frame comprising a first PSBd field, the first PSBd field comprising a first PSync field, the first PSync field comprising first bits, and a first quantity of the first bits being greater than 64 bits; and a processor coupled to the receiver and configured to perform synchronization of the first PON frame by matching the first bits to a pre-stored sequence.

Passive optical network (PON) synchronization and clock recovery

An OLT comprises a processor configured to: obtain optical powers associated with ONUs, and generate an instruction instructing a transmit order of transmissions based on the optical powers; a transmitter coupled to the processor and configured to transmit the instruction to the ONUs; and a receiver coupled to the processor and configured to receive the transmissions from the ONUs based on the instruction. An apparatus comprises a receiver configured to receive an instruction instructing a transmit order of transmissions based on optical powers associated with ONUs; a processor coupled to the receiver and configured to process the instruction; and a transmitter coupled to the processor and configured to transmit a transmission based on the instruction.

Optical network power conservation

A first apparatus in an optical communications network, the first apparatus comprises a transmitter; a receiver; a first MAC; and a first oDSP coupled to the transmitter, the receiver, and the first MAC and configured to communicate a message via a dedicated C&M channel with at least one of the first MAC, a second MAC in a second apparatus in the optical communications network, or a second oDSP in the second apparatus. A method comprises receiving an FS message comprising a PLOAM field, the PLOAM field contains oDSP-related C&M information, and the oDSP-related C&M information comprises a message type ID field and a Message_Content field; reading the message type ID field; and deciding, based on the message type ID field, whether to read the Message_Content field.

Communication in passive optical networks (PONs) related to digital signal processing for optical signal (oDSP)

An ONU comprises a receiver configured to receive a continuous-mode TDMA downstream signal from an OLT; a PD coupled to the receiver and configured to convert the continuous-mode TDMA downstream signal to an electrical signal or an RF signal; an ADC coupled to the PD and configured to convert the electrical signal or the RF signal to a digital signal; and a burst-mode data recovery stage coupled to the ADC and configured to perform data recovery on a segment of the digital signal corresponding to the ONU, the burst-mode data recovery stage comprises a synchronization stage configured to perform synchronization on the segment.

Reduced power consumption for digital signal processing (DSP)-based reception in time-division multiplexing (TDM) passive optical networks (PONs)

A system comprising a first optical line terminal (OLT) of a first passive optical network (PON) with the first OLT configured to receive user data from a baseband unit (BBU) and send the user data to a remote radio unit (RRU) via a first optical network unit (ONU) of the first PON using a first wavelength, and a second OLT of a second PON, the second OLT configured to obtain control and management (C&M) information, share the C&M information with the first OLT, and send the C&M information to a second ONU that is co-located with the first ONU using a second wavelength.

Control and management of a first PON using a second PON

A transceiver comprises: a sampling phase optimization stage comprising: a first interpolator; a first equalizer coupled to the first interpolator; a first optimizer coupled to the first equalizer; and an output; and an equalization stage coupled to the output and comprising: a buffer; a second interpolator coupled to the buffer; and a second equalizer coupled to the second interpolator. A method comprising: receiving an optical burst signal; determining an optimum sampling phase based on a portion of a digital signal representing the optical burst signal; and equalizing all of the digital signal using the optimum sampling phase.

Channel recovery in burst-mode, time-division multiplexing (TDM) passive optical networks (PONs)

An apparatus comprises a DAC configured to convert a digital electrical signal to an analog electrical signal and a laser coupled to the DAC. The laser is configured to generate an optical signal using the analog electrical signal for modulation, the optical signal is a band-multiplexed optical signal comprising frequency bands, the frequency bands comprise a lowest-frequency band, and the lowest-frequency band comprises a baseband IM signal. The laser is configured to transmit the optical signal. A PON comprises an OLT configured to transmit a downstream optical signal, the downstream optical signal is a band-multiplexed optical signal comprising a first band and a second band. The PON includes a first ONU configured to receive the downstream optical signal and equalize only the first band; and a second ONU configured to receive the downstream optical signal and equalize the first band and the second band.

Band-multiplexed passive optical networks (PONs)

A method implemented by a first network element (NE) comprises receiving, by a receiver of the first NE, a burst from a second NE, wherein the burst comprises at least one training symbol (TS), storing, by a memory of the first NE, a channel response for a link between the first NE and the second NE, wherein the first NE is communicatively coupled to the second NE, wherein the channel response is based on a current channel response estimated using at least one TS in the burst and a previously stored channel response, and wherein the previously stored channel response is based on a plurality of bursts previously received from the second NE, and compensating, by a processor coupled to the receiver and the memory of the first NE, modulated symbols in the burst using the channel response.

Burst-mode discrete multi-tone for networks

A method including receiving, via a frontend of a communication device from a communication link, a cascaded waveform modulation with embedded control signal (CWM-CS); performing time-domain demultiplexing on the CWM-CS to obtain a first waveform modulation signal (W), a second waveform modulation signal (W), and a control signal (CS); training a channel equalizer based on the control signal; performing channel equalization on the first waveform modulation signal, the second waveform modulation signal, and the control signal CS; performing time-domain de-multiplexing on the first waveform modulation signal W, the second waveform modulation signal W, and the control signal CS; applying a rounding function to the first waveform modulation signal W; generating a recovered signal (S), by summing the first waveform modulation signal Wand the second waveform modulation signal W; recovering data from the recovered signal S; and recovering control information by demodulating the control signal CS.

Cascaded waveform modulation with an embedded control signal for high-performance mobile fronthaul

A first apparatus comprises: a processor configured to generate a first synchronization message; a transmitter coupled to the processor and configured to transmit the first synchronization message to a second apparatus at a first wavelength; and a receiver coupled to the processor and configured to receive a second synchronization message from the second apparatus at a second wavelength and in response to the first synchronization message, the first wavelength and the second wavelength are based on a reduction of a latency difference between the second synchronization message and the first synchronization message, and the processor is further configured to calculate a TO between the first apparatus and the second apparatus based on the reduction.

Synchronization error reduction in common public radio interface (CPRI) passive optical networks (PONs)

A method implemented in a fronthaul communication unit, comprising applying, via a processor of the fronthaul communication unit, a plurality of first frequency-domain windowing (FDW) functions on a plurality of first communication channel signals to produce a plurality of first windowed signals, aggregating, via the processor, the plurality of first windowed signals to produce a first aggregated signal, and transmitting, via a frontend of the fronthaul communication unit, the first aggregated signal to a corresponding fronthaul communication unit over a fronthaul communication link to facilitate fronthaul communication.

Windowing methods for efficient channel aggregation and deaggregation

A method implemented in a communication device, comprising generating, via a processor of the communication device, a first waveform modulation signal based on a first approximation of an input signal, generating, via the processor, a second waveform modulation signal based on a first difference between the input signal S and the first waveform modulation signal, generating, via the processor, a control signal having a sequence of control symbols with a pre-determined modulation format, performing, via the processor, time-domain multiplexing (TDM) on the first waveform modulation signal, the second waveform modulation signal, and the control signal to form a cascaded waveform modulation signal with embedded control signal (CWM-CS), modulating, via a frontend of the communication device, the CWM-CS onto a carrier, and transmitting, via the frontend, the CWM-CS over a communication link to a corresponding communication device in a network.

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Huaiyu Zeng