399 results about "Optical network unit" patented technology

The invention discloses a roaming method and device, relates to the technical field of communication, and is used for providing a processing flow of master and slave optical network units. The method comprises the following steps: the MFU determines a target SFU for the station according to the roaming decision information; and the MFU sends a roaming start indication message to the target SFU, wherein the roaming start indication message is used for indicating to start roaming processing for the station.

The invention discloses an optical network unit (ONU) and a registration method thereof, and the registration method comprises the following steps: in a standby state, judging whether network parameter setting information broadcasted by an optical line terminal (OLT) is received or not; in response to judging that the network parameter setting information is received, entering a serial number state, and starting timing to generate timing time; in the serial number state, receiving at least one piece of serial number requirement information from the OLT; in the serial number state, when the timing time does not exceed the exploration time and when the serial number requirement information is received each time, a serial number response message is sent out, whether the identification code distribution information is received or not is judged, and the exploration time is not smaller than the time interval of the ONU receiving the serial number requirement information for at least two times; and when the timing time does not exceed the exploration time, responding to the judgment that the identification code distribution information is received, and entering a distance measurement state.

The invention provides a signal processing device and an optical network, relates to the field of optical communication, and can reduce the transmission loss of the optical network. The signal processing device comprises a control circuit and a first optical distributor. The first optical distributor comprises a public port and a plurality of branch ports; wherein the common port of the first optical distributor is used for connecting a first optical line terminal, the first branch port of the plurality of branch ports of the first optical distributor is used for connecting a first optical network unit, and the second branch port of the plurality of branch ports of the first optical distributor is used for connecting a second optical network unit. The control circuit sends a first control signal to the first optical distributor so as to control the first optical distributor to communicate the public port with the first branch port; and the control circuit sends a second control signal to the first optical distributor so as to control the first optical distributor to communicate the public port with the second branch port. The embodiment of the invention is applied to the field of optical communication.

An embodiment of the present disclosure provides a method for registering an optical network unit, which is used for an optical line terminal and includes: sending registration configuration information according to the registration information of the optical network unit to be registered obtained in advance to complete the registration of the optical network unit to be registered; wherein the registration information of the optical network unit to be registered is obtained before the start of this registration. An embodiment of the present disclosure also provides a method for writing registration information, an optical line terminal, an optical network unit, a preposed optical network unit, and a registration device.

The present application provides a fault location and detection method, an optical line terminal, a passive optical network system and a medium. The method comprises: acquiring first communication feature data of a plurality of optical network units to be tested; on the basis of the first communication feature data, determining at least one first optical network unit among the plurality of optical network units that is suspected of having a logic channel occupation fault; issuing a preset message to a first logic channel corresponding to the first optical network unit, and on the basis of the response of other optical network units among the plurality of optical network units other than the first optical network unit to the preset message, determining a second optical network unit among the other optical network units, wherein the second optical network unit is an optical network unit among the other optical network units that interferes with occupation of the first logical channel of the first optical network unit, and the first logical channel is an interfered logical channel.

The invention belongs to the technical field of FTTR enterprise networking, and particularly relates to a PON-based FTTR enterprise networking method and system, a dynamic networking decision model is constructed, an optical line terminal OLT obtains networking demand information, generates networking configuration information and issues the networking configuration information to an optical network unit ONU through the PON, the terminal configuration information is subjected to multi-protocol fusion processing coding, and the terminal configuration information is subjected to multi-protocol fusion processing coding. The method comprises the following steps: establishing trusted communication connection based on a block chain to communicate with an optical network unit ONU, and monitoring data of a region in real time; and uploading the collected monitoring data to an optical line terminal OLT, constructing an enterprise network virtual model by the optical line terminal OLT by using a digital twinning technology, performing network optimization simulation in the virtual model according to the monitoring data to obtain an optimal optimization strategy, and issuing the optimal optimization strategy to an optical network unit ONU for execution. Through intelligent dynamic networking, the flexibility and adaptability of the system are improved, the deployment efficiency is improved based on SDN configuration management, and the network security is enhanced through multi-protocol fusion and intelligent issuing, resource utilization optimization and block chain-based trusted communication.

A data packet forwarding method and apparatus, a storage medium, and an electronic device are provided. The method includes: receiving, through a Gemport in one-to-one correspondence with a service Gemport of a first edge Optical Network Unit (ONU), a data packet sent by the first edge ONU; searching for a destination forwarding port from a Media Access Control (MAC) address table according to a destination MAC address of the data packet, wherein the MAC address table stores a correspondence between a source MAC address and a Gemport; and in a case where the destination forwarding port is found, sending the data packet to a second edge ONU through the destination forwarding port. The solution may solve the problem in the related art regarding how to enable the FTTR optical gateways to effectively handle data exchange between ordinary Ethernet ports and edge ONUs and data exchange between multiple edge ONUs.

The invention provides an optical network unit, a service data transmission method and a passive optical network system, and relates to the technical field of optical communication. The optical network unit comprises a first MAC module, a second MAC module and a first optical module; the first optical module is used for receiving a first optical signal and a second optical signal from an optical line terminal, converting the first optical signal into a first electric signal, converting the second optical signal into a second electric signal, sending the first electric signal to the first MAC module and sending the second electric signal to the second MAC module; the first optical signal and the second optical signal are optical signals with different wavelengths; the first MAC module is used for converting the first electric signal into first service data; the second MAC module is used for converting the second electric signal into second service data; the first business data and the second business data belong to the same business. The optical network unit can be compatible with PON protocols of different generations, and the access capability is effectively improved.

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.

The invention provides an optical fiber borne radio frequency signal ROF transmission system and transmission method, the system comprises a wireless coverage subsystem, a passive optical network PON broadband access subsystem and a first multiplexer / demultiplexer, the wireless coverage subsystem comprises a base station, at least one remote radio frequency coverage point RFP and UE, and the first multiplexer / demultiplexer comprises at least one radio frequency signal. The PON broadband access subsystem comprises an optical line terminal (OLT) device, a passive optical distribution network (ODN) and at least one optical network unit (ONU) device, the base station comprises a first ROF module, and the RFP comprises a second multiplexer / demultiplexer and a second ROF module. Through the ROF transmission system and the ROF transmission method, a passive optical network (PON) used by a home broadband can be used for forward transmission of radio frequency signals, the deployment cost of an indoor distribution system is greatly reduced, the deployed ODN is effectively utilized, and meanwhile, the technical prejudice that only point-to-point architecture deployment can be adopted on the same wavelength in the ROF technology is overcome.

A method for monitoring an optical distribution network (ODN) in a passive optical network (PON), comprises establishing at least one data channel between an optical line terminal (OLT) and at least one optical network unit (ONU). The at least one ONU receives a live data traffic signal on at least one of the at least one data channel. The at least one ONU monitors the live data traffic signal for one or more abnormalities. The at least one ONU transmits an alert to the OLT when one or more abnormalities is detected.

The invention provides an ONU (Optical Network Unit) management mode and port state switching method based on a hardware button, and relates to the technical field of communication, the method comprises the following steps: acquiring the triggering duration of an MOD (Modulation of Delay) button in ONU equipment, the triggering duration comprising a first triggering duration in a first time period and a second triggering duration in a second time period, the first time period is longer than the second time period; when the triggering duration of the MOD button is a first triggering duration, enabling the ONU equipment to execute a management mode switching operation, and performing switching between a remote management mode and a local management mode; and when the triggering duration of the MOD button is a second triggering duration, enabling the ONU equipment to execute switching between a port isolation state and a port intercommunication state in a local management mode, and directly writing a switching result into a nonvolatile memory. According to the invention, the reliability of the ONU equipment can be improved.

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.

The invention provides a passive optical network time-sensitive service transmission method and system, and the method comprises the steps: distributing a logic link identifier to at least one optical network unit, receiving the number of bytes to be distributed in a buffer region of each optical network unit, and building a polling table record with communication round-trip time; sending authorization information to each optical network unit; according to the communication round-trip time, determining a sending sequence of data to be forwarded uploaded by the optical network unit to the queuing scheduling module in each forwarding period; receiving data packets which are forwarded by each optical network unit through a queuing scheduling module and are obtained by packaging data to be forwarded and control information, receiving a plurality of data packets forwarded by each optical network unit by the queuing scheduling module, and storing the data packets in a transmission queue of a corresponding ordinal number according to the delay time slot number of the data packets, forwarding to the optical terminal equipment one by one according to ordinal numbers in a forwarding period; and updating the polling table according to the remaining byte number of the buffer area of the corresponding optical network unit recorded in the control information and the actual communication round-trip time.

According to an aspect of an embodiment, an optical network unit (ONU) in a passive optical network (PON) may comprise a physical media dependent (PMD) receiver, a detector, and a processing device. The PMD receiver may be configured to receive a downstream signal from an optical line terminal (OLT). The detector may be configured to measure a link quality parameter in the downstream signal. The processing device may be configured to identify a link quality parameter target, wherein the link quality parameter target is a value that achieves a target error probability. The processing device may be configured to compute a link quality parameter margin between the measured link quality parameter and the link quality parameter target, and adjust a transmission parameter based on the link quality parameter margin.

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.

Disclosed in the embodiments of the present application are a bandwidth scheduling method, an electronic device and a computer-readable storage medium. The method comprises: dividing a target frame into multiple subframes on the basis of a preset bandwidth requirement, wherein each subframe corresponds to a subframe configuration table and a high-priority entry configuration table; on the basis of information collected from an optical network, calculating an allocable bandwidth for the target frame; on the basis of a high-priority entry configuration table and a subframe configuration table of a target subframe among the subframes, and the allocable bandwidth, determining bandwidth entry priorities of the target subframe; on the basis of the bandwidth entry priorities of the target subframe, sequentially transferring bandwidth entries of the target subframe to a preset bandwidth mapping table; and when the target subframe is the last subframe of the target frame, transmitting to an optical network unit all bandwidth entries of the target frame that are stored in the bandwidth mapping table.

The invention discloses an ONU authentication method, an ONU authentication device, optical communication equipment and an optical communication system, and belongs to the technical field of optical communication. The method comprises: an OLT receiving a first configuration information group and a second configuration information group, the first configuration information group being related to a first type of ONU, the second configuration information group being related to a second type of ONU, MAC protocols supported by the first type of ONU and the second type of ONU being different, the first configuration information group comprising first authentication information, and the second configuration information group comprising second authentication information; the second configuration information group comprises second authentication information, and the first authentication information is the same as the second authentication information; and authenticating the ONU according to the first configuration information group and the second configuration information group. According to the method, the ONU online configuration process can be simplified.

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 invention relates to the technical field of optical fiber communication, and discloses a fault positioning device and method for a passive optical network, the device mainly comprises an optical link terminal, an optical distribution network and an optical network unit, the optical link terminal comprises a communication light generation unit, a detection light generation unit, a first wavelength division multiplexer and a fault positioning unit, the optical distribution network comprises a second wavelength division multiplexer, a first optical splitter, a second optical splitter, a plurality of optical encoders and a plurality of third wavelength division multiplexers, the second wavelength division multiplexer is used for separating the mixed light into communication optical signals and detection optical signals, and the first optical splitter is used for distributing the communication optical signals; a plurality of output ends of the second optical splitter are respectively connected to input ends of a plurality of optical encoders, each optical encoder performs time domain encoding on the detection optical signal, and an output end of each optical encoder is connected with a second input end of the third wavelength division multiplexer. According to the invention, high-efficiency, accurate and intelligent positioning of the high-splitting-ratio passive optical network fault is realized.

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 utility model relates to an ONU (Optical Network Unit) switch convenient for operation and maintenance detection of an EPON (Ethernet Passive Optical Network) system. The ONU switch comprises a shell, and a first circuit board and a second circuit board which are arranged in the shell, the shell comprises a lower shell and an upper shell which are covered with each other, and the second circuit board is arranged on one side, close to the upper shell, of the first circuit board; the first circuit board is used for light / electricity and electricity / light conversion and data transmission; the second circuit board is electrically connected with the first circuit board, the second circuit board is used for collecting network information, the second circuit board is connected with a server background, and an intelligent operation and maintenance system of the server background constructs a network topology structure according to the information collected by the second circuit board. According to the invention, the second circuit board for realizing the topology function is directly installed in the originally designed case, so that the topology function of the ONU switch is improved, the operation and maintenance detection efficiency of an EPON system is improved, and the purpose of intelligent operation and maintenance of communication equipment is realized; and the redesign of the casing and the transformation of the production line are reduced, and the production cost of the ONU switch is reduced.

The invention provides an optical network unit staged anti-theft method and device and computer equipment, relates to the technical field of optical network unit anti-theft, and solves the problems that the existing optical network unit anti-theft technology is single in anti-theft mechanism, lagged in state judgment and low in operation and maintenance efficiency. The method comprises the following steps: periodically receiving a communication state from a server by utilizing an optical network unit; when the communication state is a failure state, starting a time lock for timing to obtain an accumulated time length; and implementing a staged anti-theft strategy according to the accumulated duration. According to the invention, firstly, the optical network unit is utilized to periodically detect the communication state with the server, and then the communication abnormal duration is accumulated through the time lock and the staged anti-theft strategy is executed according to the time, so that multi-strategy anti-theft, rapid state judgment and efficient operation and maintenance of the optical network unit are realized.

The application discloses a fault probability determination method and device, equipment and a readable storage medium, and relates to the technical field of power operation and maintenance. The method comprises the following steps: acquiring a set of power failure events to be analyzed in a target area; constructing a knowledge graph based on the set of power failure events to be analyzed; determining a first matrix corresponding to each optical network unit based on the connection between each optical network unit corresponding to each power failure event to be analyzed in the knowledge graph; performing aggregation processing on the first matrix to obtain a first vector corresponding to each optical network unit, wherein the first vector is obtained by aggregating spatial information and time information corresponding to each optical network unit; and inputting the first vector corresponding to each optical network unit into a first model to obtain a fault probability of the target area output by the first model. Through the method, whether a regional power interruption leads to a large number of power failure events can be accurately determined.

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.