201 results about "Optical line termination" patented technology

The invention discloses a PON-based multi-protocol communication method and device, and the method comprises the steps: distributing a corresponding internal scheduling time slot to each network protocol processing unit for data uploading to each network protocol processing unit when a data processing module detects that the network protocol processing units connected with each field bus device have to-be-uploaded service data; and when one internal scheduling time slot is used up, interrupting the uploading of the service data until the next internal scheduling time slot allocated to the internal scheduling time slot is recovered from interrupting the uploading of the data. And the PON module monitors a global scheduling time slot allocation instruction issued by the optical line terminal in real time, converts an uploaded data frame into an electric signal, transmits the electric signal to the optical module through an internal link, converts the electric signal into an optical signal through the optical module in an allocated global scheduling time slot, and uploads the optical signal to the optical line terminal through an optical distribution network. Real-time performance and orderliness of transmission of service data in multiple field bus devices in a PON network are achieved, the requirement of industrial communication for data transmission is met, and transmission resource distribution is optimized.

The invention relates to the technical field of optical line terminal configuration, in particular to a method and system for automatically configuring optical line terminals of different manufacturers based on artificial intelligence. The method comprises the steps of collecting multi-source heterogeneous data to train a deep learning model, constructing a Transform or RNN-based architecture of a TensorFlow framework, performing cross validation and model compression, then performing optimization through a TensorRT inference engine, developing an intelligent configuration application system, deploying the intelligent configuration application system to a control host, and providing algorithm support for automatic configuration. By constructing an automatic configuration system based on artificial intelligence, the problems of heterogeneous compatibility and intelligent configuration of OLT equipment of multiple manufacturers are systematically solved. In a configuration optimization link, a virtual simulation environment is constructed based on a real network topology, a configuration effect is evaluated through multi-dimensional indexes such as throughput and time delay, potential conflicts are detected in combination with an AI algorithm, an optimization scheme is generated, and the configuration error rate of manual operation is reduced.

The invention relates to a vehicle-mounted passive optical network unit system and a communication method thereof. The vehicle-mounted passive optical network unit system comprises an optical line terminal; the plurality of optical network units receive downlink data; analyzing the downlink data to obtain an udp data packet; performing fcs verification on the instruction udp data packet; if the verification is successful, analyzing the instruction udp data packet to obtain instruction information; extracting the instruction information marked with the head and the tail, generating control information based on the instruction information marked with the head and the tail, issuing the control information to the vehicle-mounted terminal, and reading uplink data acquired by the vehicle-mounted terminal from the vehicle-mounted terminal; forming the uplink data into udp frames, and caching the processed uplink data; extracting the cached uplink data and transmitting the uplink data to the first interface; an optical splitter; a vehicle-mounted processor; and a vehicle-mounted terminal. The system has the advantages of low energy consumption, high broadband, low time delay, electromagnetic interference prevention, simple wiring, rapidness, stability, reliability and the like.

The invention relates to a service processing method, device, system and equipment of a passive optical fiber network, a storage medium and a program product, and relates to the field of network technology and security technology. According to the application, the flexibility of service processing can be improved, and the service-level network elasticity capability which is flexible as required is provided. The method comprises the following steps: determining a second service channel corresponding to a second service category identifier and a target dynamic bandwidth allocation rate template corresponding to the second service channel; the second service type identifier corresponds to a second network service business added on the basis of the first network service business; the second service category identifier is different from a first service category identifier corresponding to the first network service business; the second service channel is different from the first service channel corresponding to the first service type identifier; the first service channel and the second service channel are service channels established between the optical network unit and the optical line terminal; and processing service data corresponding to the second service category identifier according to the second service channel and the target dynamic bandwidth allocation rate template.

In accordance with an embodiment, a method includes determining, by a standby optical line terminal (OLT), that a primary OLT has stopped sending a downlink optical signal over a first management channel; sending, by the standby OLT, a ranging request to a first optical network unit (ONU), over a second management channel, where the first ONU is one of the at least one ONU, and the second management channel is a channel between the standby OLT and the at least one ONU; and obtaining, by the standby OLT, a distance parameter between the first ONU and the standby OLT based on a ranging response received from the first ONU over the second management channel.

Communication systems and methods using a hybrid-switch dynamic bandwidth allocation (DBA) are provided. A predetermined switch threshold is calculated for each data subcarrier of a downstream optical signal. The downstream optical signal is transmitted by an optical line terminal (OLT) to a plurality of optical network units (ONUs) disposed remotely from the OLT. A status report is received from each ONU of the plurality of ONUs and a current load is calculated for each data subcarrier of the one or more data subcarriers based on the status report from each ONU. The current load is determined to meet or not meet the predetermined switch threshold. A first DBA algorithm is selected when the current load does not meet the predetermined switch threshold and a second DBA algorithm is selected when the current load meets the predetermined switch threshold. The selected DBA algorithm is then executed.

A system for activating multi-rate optical network units (ONUs) includes an optical network having an optical line terminal (OLT) optically coupled to a plurality of ONUs, including one or more multi-rate ONUs configured to support multiple upstream rates. During discovery when other ONUs are permitted to transmit in the same quiet window, a multi-rate ONU that supports a higher rate is instead configured to send a discovery response at a sufficiently low rate so as not to require training of an equalizer, thereby allowing for a short preamble for the discovery response. Thereafter, during a quiet window for ranging when only the multi-rate ONU will be transmitting to prevent data collisions, the multi-rate ONU is transitioned to a higher rate and transmits a message with a sufficiently long preamble to train an equalizer at the OLT.

The application provides a window drift processing method and an optical line terminal, an optical network unit and a computer readable storage medium. The window drift processing method applied to the OLT comprises the following steps: in the case that a first burst signal corresponding to an ONU is received, first information is determined according to the first burst signal, the first information is used for representing a window drift condition of the first burst signal; a drift domain is constructed according to the first information and the first burst signal; a GTC frame is transmitted to the ONU, so that the ONU corrects the window drift condition of the first burst signal according to the GTC frame, and the GTC frame is filled with the drift domain. In the embodiment of the application, the deviation can be quickly and accurately corrected directly according to the GTC frame, so that the efficiency of correcting the window drift of the burst signal is improved, and the stability of the passive optical fiber network is improved.

The invention discloses an optical network terminal detection method, a detection device and an optical line terminal, and belongs to the technical field of communication. The method is applied to a detection device, the detection device is connected with a first optical network terminal (ONT) through a first channel and connected with a second ONT through a second channel, the wavelength range received by the first channel is a first wavelength range, and the wavelength ranges received by the second channel are a second wavelength range and a third wavelength range. The first wavelength range is located between the second wavelength range and the third wavelength range, and the method comprises the following steps: under the condition that bandwidth authorization is not carried out on the first ONT, authorizing a first bandwidth greater than a first bandwidth threshold to a target ONT; and detecting a signal of the target ONT in the first channel to obtain a signal detection result, thereby determining whether the target ONT is an abnormal ONT. According to the invention, the detection of the abnormal ONT is realized through cross-channel signal detection, the detection accuracy is relatively high, and the efficiency is also relatively high.

Provided is a passive optical network uplink signal processing method, comprising: an optical line terminal (OLT) collecting a target uplink signal from a target ONU on an uplink bandwidth pre-allocated to the target ONU to obtain feature data of the target uplink signal, determining identity information of the target ONU according to the uplink bandwidth, and sending the determined identity information to the target ONU; and determining a processing mode of the feature data. Through the embodiment of the invention, the identity of the ONU can be decided according to the characteristic data of the uplink signal, the identity of the ONU can be effectively and reliably prevented from being falsely used, and the problem that the service of the normal ONU is stolen and enjoyed due to the fact that the SN of the normal ONU is counterfeited in the related technology is solved.

The present disclosure provides a configuration method, including: determining, according to OAN service types, information of at least one OAN slice for transmitting an OAN service flow of each OAN service type; determining, according to OTN service types, information of at least one OTN slice for transmitting an OTN service flow of each OTN service type; and establishing, according to a correspondence relationship of the OAN service types and the OTN service types, a mapping relationship between the at least one OAN slice and the at least one OTN slice to obtain information of at least one end-to-end slice, where each end-to-end slice includes a set of OAN slice and OTN slice having a mapping relationship. The present disclosure further provides a data transmission method, a controller, an optical line terminal, and a computer-readable storage medium.

A scheduling method, an OLT, an ONU, a system, a storage medium, a vehicle, and a program product. The method can be applied to an optical communication system. The optical communication system comprises an optical line terminal (OLT) and at least one optical network unit (ONU), wherein the at least one optical network unit (ONU) comprises a first ONU; the OLT can determine, on the basis of feature information of a deterministic service, a configuration parameter of a transmission window of a first packet of the deterministic service; and the OLT can also send scheduling information to the first ONU, the scheduling information indicating the transmission of the configuration parameter of the transmission window.

Embodiments of the present application provide a response method and device for a registration request, the method comprising: receiving an allocation identifier (Alloc-ID) configuration table sent by an optical line terminal (OLT), wherein the Alloc-ID configuration table comprises a correspondence between an Alloc-ID and an upstream rate; parsing the Alloc-ID configuration table to determine a target Alloc-ID from the correspondence between the Alloc-ID and the upstream rate, wherein the rate corresponding to the target Alloc-ID comprises a rate supported by an optical network unit (ONU); and responding to a registration request sent by the OLT based on the target Alloc-ID, wherein the registration request carries the target Alloc-ID. Through the present application, the problem of low T-CONT use efficiency in the related art is solved, and the effect of improving the T-CONT use efficiency is achieved.

The utility model relates to the technical field of optical fiber communication, specifically relates to a device that improves passive optical network link connection compatibility, the passive optical network includes an optical line terminal, a beam splitter and a plurality of optical network units, the input end of beam splitter is connected optical line terminal through first optical fiber, and the output end of beam splitter is connected a plurality of optical network units through second optical fiber, the device includes: ONU optical module is connected with the optical network unit, is used for obtaining the original monitoring quantity of optical link received by optical network unit, and after calculating the attenuation of optical link received by ONU and power demand value, the closest optical power is outputted, OLT optical module is connected with the optical optical line terminal, is used for obtaining the original monitoring quantity of optical link received by optical line terminal, and after calculating the attenuation of optical link received by OLT and power demand value, the closest optical power is outputted. The material consumption is reduced, and the flexibility and stability of system deployment are improved, thereby satisfying the increasing broadband access demand, and improving user experience.

The application discloses a service configuration method and device of a passive optical network equipment and a storage medium, wherein the method comprises the following steps: when it is detected that a first optical network terminal completes registration, if a first configuration issuing state is an issued state and configuration parameters of the first optical network terminal need to be upgraded, an optical line terminal determines a management mode corresponding to the first optical network terminal based on the first configuration issuing state; the optical line terminal determines a first target configuration file corresponding to the first optical network terminal based on the management mode, the configuration parameters and a configuration information table; and the optical line terminal issues the first target configuration file to the first optical network terminal, wherein the first optical network terminal performs corresponding parameter configuration operation based on the configuration file. The application can perform parameter configuration on the configuration file issued to the optical network terminal in the issued state and needing to be upgraded, improves the resource utilization rate of the passive optical network equipment, and simultaneously can also update the default configuration in the optical network terminal.

This semiconductor light-receiving element (100) is provided with: an n-type InP substrate (1); an n-type semiconductor layer (2) formed on the n-type InP substrate (1); a multiplication layer (3) which is formed on the n-type semiconductor layer (2), has a layer thickness of 40 nm or more and 170 nm or less, and comprises an InAlAs digital alloy structure in which InAs layers and AlAs layers are alternately laminated; a p-type electric field relaxation layer (4) formed on the multiplication layer (3) and comprising InP or InAlAs; and an InGaAs light absorption layer (5) formed on the p-type electric field relaxation layer (4).

The invention relates to the technical field of optical fiber access networks, in particular to a data forwarding method based on an outer layer VLAN label, network equipment and a storage medium, the method is applied to the network equipment comprising an optical line terminal OLT chip and a switching chip, and the method comprises the following steps: in an uplink direction, obtaining a first GEMPORT ID corresponding to a data stream from an optical network unit ONU through the OLT chip; based on the first GEMPORT ID, generating a first outer layer VLAN label of the uplink data packet; combining the uplink data packet with the first outer-layer VLAN label to form a first double-layer VLAN message; the first double-layer VLAN message is sent to a switching chip; the method comprises the steps of receiving a first double-layer VLAN message through a switching chip, analyzing a first outer-layer VLAN label in the first double-layer VLAN message to obtain a first GEMPORT ID, and creating table items in an initial L2 forwarding table based on the first GEMPORT ID and a source MAC address of the first double-layer VLAN message to obtain an updated L2 forwarding table. According to the invention, the forwarding table pressure of the OLT chip is reduced by using the L2 learning mechanism of the switching chip.

A method for equalization in an access network of passive optical network type. The method includes, for a given optical distribution network connecting a given input port of an optical line termination to a given plurality of optical network units: for at least one of the optical network units of the given plurality, obtaining a distance between the optical line termination and the optical network unit; determining a representative distance associated with the given optical distribution network, according to the one or more distances obtained; determining at least one equalization parameter, according to the representative distance; and equalizing transmission channels within the given optical distribution network, according to the at least one equalization parameter, each of the transmission channels connecting the given port of the optical line termination to one of the optical network units of the given plurality.

This optical modulator-integrated semiconductor laser (500) is provided with a semiconductor laser unit (101) formed on a semi-insulating substrate (1), a first connection waveguide unit (102), a first EA modulator unit (103), a second connection waveguide unit (104), a second EA modulator unit (105), and a first EA modulator n-type electrode (31) provided in the first EA modulator unit (103) and a second EA modulator unit (105) provided in the second EA modulator unit (105). And a first common electrode (45) electrically connected to the second EA modulator p-type electrode (42).

A coherent transmitter (100, 200) for use in a time division multiple access (TDMA) system is operated in multiple states to enable coherent burst transmission. In an OFF state, the transmitter (100, 200) generates a dummy laser output (fd) from either a dummy laser (102) or an active laser (52) tuned to a dummy frequency different from an active frequency (fa), thereby maintaining thermal and bias stability without adding excess power on an upstream channel (22). In an ON state, the active laser (52) produces an active laser output (fa) that is modulated by a quad-parallel Mach-Zehnder (QPMZ) modulator (60) to transmit data. A thermoelectric cooler (TEC) (58) stabilizes laser temperatures, and a variable optical attenuator (VOA) (54) controls output power. The transmitter (100, 200) is suitable for an optical network unit (ONU) (14) in a passive optical network (PON) (10) communicating with an optical line terminal (OLT) (12).

Techniques for communicating between client devices connected to components in a Passive Optical Network (PON) include establishing a communication session with an optical network terminal (ONT) in a PON via a short-range communication link. The PON includes an optical line terminal (OLT) optically connected to the ONT via one or more optical fibers. Furthermore, the techniques include presenting an indication of a second client device communicating with a component in the PON optically coupled to the ONT, where the ONT is downstream of the component. Additionally, the techniques include establishing a messaging session between the first client device and the second client device, and receiving a communication from the second client device indicating a repair status of the component in the PON, where repair of the ONT depends on the repair status of the component.

A kind of GPON hardware system based on Zynq architecture, including Zynq framework SoC chip, optical line terminal optical module and optical network unit optical module, Zynq framework SoC chip includes processing system and programmable logic part, processing system and programmable logic part communicate by AXI-lite protocol.The GPON hardware system of flexible, scalable, easy maintenance network topology of P2P (point to point) or P2MP (point to multipoint) provided by the application is composed of Zynq architecture Soc chip and OLT (optical line terminal) optical module, ONU (optical network unit) optical module etc., the number of each node of system and topology can be flexibly set, and each node can be managed, configured and maintained remotely by SoC development platform based on Zynq architecture, and the hardware system built by it has the advantages of simple system, controllable cost, management configuration, simple upgrade and maintenance, high safety and reliability, no backdoor etc.

Examples embodiments relate to passive optical networks (PONs) and in particular to a controller and associated method for an optical termination device. The controller may for example comprise means for determining, based on one or more inputs, at least one of first and second passive optical network, PON, technologies to use for transmitting and / or receiving data at a time instance between an optical line terminal, OLT, and at least one optical network unit, ONU, over an optical distribution network, ODN. the OLT and the at least one ONU may be configured to support the first and second PON technologies. The controller may also comprise means for causing the data to be transmitted and / or received at the time.

The application discloses a broadband same-site machine installation detection method, device, equipment and computer program product, comprising: acquiring current self-device information and current hanging device information reported by a plurality of optical network terminals; when the upper connection optical network terminal of a target hanging device is changed, comparing first hanging device information of the historical upper connection optical network terminal before the change and second hanging device information of the current upper connection optical network terminal after the change, and obtaining a plurality of changed hanging devices; when there is a fixed terminal in the changed hanging device, judging whether the upper connection optical line terminal of the historical upper connection optical network terminal and the current upper connection optical network terminal are the same; and when the upper connection optical line terminal of the historical upper connection optical network terminal and the current upper connection optical network terminal are the same, determining that the current upper connection optical network terminal is a broadband same-site machine installation terminal. The application improves the timeliness and accuracy of broadband same-site machine installation detection, and can be widely applied in the field of communication technology.

The application provides a network fault notification method and device, electronic equipment and storage medium, and relates to the technical field of communication. The method comprises the following steps: determining target alarm information based on ONU offline alarm information, OLT PON port no light alarm information and OLT device out of service alarm information. The ONU offline alarm information is alarm information of an optical network unit (ONU) offline. The OLT PON port no light alarm information is alarm information of a PON interface of an optical line terminal (OLT) not receiving an optical signal. The OLT device out of service alarm information is alarm information of an optical line terminal (OLT) device exiting service. The target alarm information is alarm information that needs to notify corresponding user fault information. Based on the target alarm information, a notification is sent to the corresponding user. The present scheme can actively notify the user of network fault information in a timely manner, thereby improving the user experience and reducing user complaints.

The invention relates to an internet architecture and a service bearing method and device. The Internet architecture comprises a storage system, an access network of a target optical network, a metropolitan area network and an intelligent computing center. Wherein the storage system comprises a storage server which is used as a source end of RDMA (Remote Direct Memory Access) traffic; the access network comprises an optical line terminal OLT and an optical network unit ONU, the storage server is accessed to the optical line terminal OLT through the optical network unit ONU, and the optical line terminal OLT is used for dynamically distributing bandwidth for RDMA flow; the metropolitan area network comprises a first node device and a second node device. The first node device is connected with an optical line terminal OLT and the second node device. And the intelligent computing center is used as a destination end of RDMA traffic, and deploys a computing power cluster to be connected with the second node equipment so as to access the storage data of the storage server through the target optical network. According to the invention, cross-domain, efficient and lossless interconnection of storage and computing resources can be realized.

Systems and methods for operating a passive optical network (PON) extender. The methods comprise: receiving, by the PON extender, a first optical signal from a remote node device of a passive optical network via a first optical link; amplifying the first optical signal using a Raman amplifier of the PON extender to obtain a first Raman amplified optical signal; amplifying the first Raman amplified optical signal using a first optical amplifier of the PON extender to obtain an amplified uplink signal (wherein the first optical amplifier is different than the Raman amplifier); and passing the amplified uplink signal to an optical line terminal via a second optical link (wherein the optical line terminal is disposed locally at a hub site along with the PON extender).

This invention relates to the field of optical networks, and more particularly to a service activation method, network element management device, and storage medium. The service activation method includes: upon receiving a service activation request from an optical line terminal (OLT), determining pre-configured initial service information corresponding to the service activation request; if the location information contained in the initial service information differs from the location information contained in the service activation request, updating the location information of the initial service information to obtain target service information; and sending the target service information to the OLT, which then activates the service for the optical network unit (ONU) according to the target service information. By automatically updating the location information of the initial service information when it is determined that it differs from the location information contained in the service activation request, manual checks are avoided, improving the efficiency and success rate of service activation for ONUs.

The utility model discloses a vehicle-mounted PON network communication system, which comprises an optical network domain unit, an ODN optical network unit and a branch network unit, the optical network domain unit is a central centralized processing unit of an optical line terminal and is used for point-to-multipoint of a single-fiber bidirectional network, the ODN optical network unit is an optical distribution network unit of passive light, and the branch network unit is used for point-to-multipoint of a single-fiber bidirectional network. The optical line terminal is electrically connected with the optical line terminal; according to the utility model, the number of the optical network domain unit is set to be one, and optical signal transmission between the optical distribution network unit and the plurality of branch network units is utilized, so that the traditional point-to-point network communication is replaced, and the whole vehicle network communication can be realized by only one optical network domain unit OLT and the plurality of branch network units ONU, thereby greatly reducing the number of optical fibers and optical modules, and reducing the cost. The cost is saved, the communication efficiency is improved through a PON network burst function mode, and the progress of automatic driving of the ADAS is accelerated.

A passive optical network is used for communications in a data center between an Optical Line Terminal (OLT) in an Ethernet switch and an Optical Network Terminal (ONT) in a compute node in a server. The passive optical network reduces the latency from microseconds to single digit nanoseconds in both upstream and downstream directions that can result in an increase in application performance. In addition, because the passive optical network does not use active components, the passive optical network has a reduced Mean Time Between Failures that can be decades or centuries.