511 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.

An optical line terminal (OLT) in flexible passive optical network (PON) transmits a downstream signal with two or more modulation formats, wherein at least one of the modulation formats is a modified PAMx modulation format and wherein x is greater than 2. The modified PAMx modulation encodes data bits such that the probability of at least one predetermined transition between amplitude levels is modified. Furthermore, an optical network unit (ONU) in the flexible PON is assigned to one of the plurality of modulation formats based on one or more parameters, such as configuration of the ONU and line conditions.

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.

The invention discloses an OLT (Optical Line Terminal) energy-saving method and device, a nonvolatile storage medium and electronic equipment. The method comprises the following steps: acquiring first operation information of an optical line terminal (OLT) in a statistical period and second operation information of a plurality of optical network units (ONU) in the statistical period; the energy consumption ratio of the OLT in the current statistical period is determined according to the first operation information and the second operation information, and the energy consumption ratio is used for quantitatively evaluating the energy efficiency of the OLT; under the condition that the energy consumption ratio is larger than a preset energy consumption ratio threshold value, the types of a plurality of PON interfaces contained in the OLT are determined according to the first operation information and the second operation information, and the types of the PON interfaces comprise a first type of PON interfaces to be closed and a second type of PON interfaces to be subjected to data migration; and executing an energy-saving strategy corresponding to the type of the PON interface. According to the invention, the technical problem of high energy consumption of OLT equipment, especially large-scale wide-area OLT equipment, is solved.

The invention relates to the technical field of access networks, in particular to an access network mode adjusting method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring real-time network traffic corresponding to an optical network unit (ONU) of an access network; according to the real-time network flow, determining a target operation mode corresponding to an optical line terminal (OLT) port and a channel control strategy of a passive optical network port in the ONU; and performing mode adjustment on the ONU according to the channel control strategy and the target operation mode. According to the method and the device, unnecessary energy consumption caused by a high-speed mode of the CNU in a low-load period of the network is avoided, and the purposes of remarkably reducing the energy consumption and improving the energy efficiency of an access network system are achieved.

The embodiment of the invention provides a data transmission method of a passive optical network (PON), a storage medium and an electronic device, and the method comprises the steps: detecting the service transmission condition of each subcarrier through an optical line terminal (OLT), and selecting the subcarrier as a windowed subcarrier; the OLT sends a downlink broadcast signal to each subcarrier so as to match a corresponding idle windowing subcarrier for a newly accessed optical network unit ONU; and the OLT receives uplink registration information of the ONU through the idle windowing subcarrier so as to carry out data transmission. Through application of the method and the device, the problems of high time delay and low transmission efficiency during TDM-PON data transmission in related technologies are solved, and the effects of reducing the TDM-PON data transmission time delay and improving the data transmission efficiency are achieved.

The invention discloses an indoor base station management method, system and device and a nonvolatile storage medium. The method comprises the following steps: an optical network unit receives an Ethernet data packet, the optical network unit and a leather base station are packaged in the same indoor communication equipment, the Ethernet data packet comprises an uplink data packet sent by the leather base station and a downlink data packet sent by a network management platform, and the uplink data packet and the downlink data packet both comprise type fields; under the condition that the Ethernet data packet is an uplink data packet, determining a first management mode of the pico-base station according to a first field value of a type field in the uplink data packet; and under the condition that the Ethernet data packet is the downlink data packet, determining a second management mode according to a second field value of the type field in the downlink data packet. The technical problem that transmission resources and network management resources are wasted due to the fact that IP addresses need to be allocated to a fixed network side and a wireless side respectively for multi-layer routing and forwarding in the prior art is solved.

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 invention relates to the technical field of communication, in particular to dual-mode ONU (Optical Network Unit) equipment with an uninterruptible power supply and based on a PON (Passive Optical Network) system. The dual-mode ONU comprises a power storage and supply module, a dual-mode ONU module and a control unit, wherein the power storage and supply module comprises an AC220V power supply interface, a DC12V power supply interface and a USB discharge interface; the dual-mode ONU module comprises an optical signal receiving interface and an optical signal transmitting interface; the control unit can automatically control the charging and discharging strategy of the power storage and supply module according to the state of the power storage and supply module and the condition of an external power supply, so as to ensure the uninterrupted work of the dual-mode ONU module. According to the PON system-based dual-mode ONU equipment with the uninterruptible power supply provided by the invention, the power storage and supply module, the dual-mode ONU module and the control unit are integrated, so that the power supply stability and the flexible switching of network modes are realized, and the reliability of network services and the user experience are improved.

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 energy-saving method and device for an optical line terminal, equipment and a storage medium, relates to the technical field of communication, and is used for solving the problem of how to reduce energy consumption during data forwarding. The method comprises: acquiring a data type of target data to be forwarded, the target data to be forwarded being target data sent by an upper network to an optical network unit; and then, when the data type of the to-be-forwarded target data is a non-real-time interaction type requested by the optical network unit and the optical network unit is in a low-energy-consumption mode, stopping sending the to-be-forwarded target data to the optical network unit, and storing the to-be-forwarded target data in a database of the content distribution network.

The invention discloses an optical network registration method and an optical network unit, and the method comprises the steps: receiving a registration window broadcast, and recording the current broadcast frequency; when the current broadcasting times and the MAC address meet preset conditions, modifying the registration mark in the current registration window to be a second value; the MAC address is the MAC address of the current optical network unit. And dividing the optical network units into multiple groups according to a preset method. And when the registration mark is a second value and the value of the state mark is a third value, calculating time delay, and sending registration request information according to the time delay, so that the optical network unit registers in a certain registration window in the period. And the ID identifier from the OLT is received, and the value of the state flag is modified to the fourth value, which indicates that the network unit completes registration, thereby avoiding repeated registration. And when the current broadcasting frequency is equal to a preset threshold value, modifying the current broadcasting frequency to be 0, and circularly registering the optical network units which are not registered in one period again.

The invention discloses a 10Gbps ONU (Optical Network Unit) end receiving and transmitting integrated chip based on XGSPON (XGSPON) matched with a VCSEL (Vertical Cavity Surface Emitting Laser), belongs to the field of integrated circuits and vehicle-mounted all-optical network optical communication, and aims to solve the problem that the existing vehicle-mounted all-optical PON network scheme cannot meet the low power consumption requirement. The chip is used for short-distance optical transmission of a vehicle-mounted all-optical network and is manufactured by a continuous mode receiving unit CM RX, a burst mode transmitting unit BM TX, a digital control unit Digital and a power management unit POWER on the same wafer substrate. The POWER converts an external 3.3 V voltage into a 1V voltage, and provides a working voltage for an on-chip main channel; the BM TX drives a VCSEL laser to emit an optical signal through a burst mode laser driver so as to send uplink burst data to an automobile control unit; the CM RX is used for continuously receiving optical signals by using a photodiode PD and receiving downlink continuous data of an automobile control unit; and the Digital is communicated with an automobile control unit through two signal lines SCL and SDA, so that the control of internal parameters of a chip and the optimization of data transmission quality are realized.

The invention discloses a method and a device for determining a fault type of an ONU (Optical Network Unit). The method comprises the following steps: acquiring alarm information generated in a preset detection period; the fault type corresponding to each PON port is determined according to the alarm information, the PON ports are interfaces providing resources for ONUs in a passive optical network, each PON port provides resources for a plurality of ONUs, the fault types comprise long light emitting faults, disordered light emitting faults, light path instability faults and rogue ONUs under single-channel faults, the long light emitting faults indicate that the ONUs communicating with the PON ports continuously send data to the PON ports, and the long light emitting faults indicate that the ONUs communicate with the PON ports continuously send data to the PON ports. The disordered light-emitting fault indicates that ONUs communicating with the PON port send data to the PON port within the authorized time, the single-channel fault indicates that a plurality of ONUs in an off-line state communicate with the PON port through a data transmission channel supported by the CombboPON, and the rogue ONUs comprise a long light-emitting fault and a disordered light-emitting fault; and for each PON port, verifying the fault type corresponding to the PON port by adopting a verification method corresponding to the fault type.

The invention discloses a network access system based on 5G CPE. The network access system comprises a 5G cellular module and a small optical line terminal module, the 5G cellular module comprises a modulation-demodulation unit and an application processor unit; the application processor unit is connected with the small optical line terminal module through a network interface; the modulation and demodulation unit is used for receiving a 5G network signal sent by an operator base station and converting the received 5G network signal into a signal which can be used by user equipment; and the small optical line terminal module is used for managing network access of the optical network unit of the user equipment, performing photoelectric conversion on a signal which can be used by the user equipment after the optical network unit of the user equipment realizes network access, driving the optical splitter to emit light according to the converted signal, and sending the light to the user equipment. And the optical splitter transmits the converted signal to an optical network unit of the user equipment through an optical fiber. According to the invention, high-efficiency, low-cost and high-speed network access can be realized.

The invention discloses a comprehensive monitoring system and method for an optical network unit and the optical network unit. According to the scheme, hardware signal loss state monitoring, channel degradation monitoring and registration state monitoring are carried out, and then a hardware fault early warning signal, a channel degradation warning signal and a heartbeat signal detection result are detected; and the fault type and severity are comprehensively judged, and an optimal switching path and an optimal recovery strategy are selected and executed through an interrupt notification processing mechanism. According to the optical network unit comprehensive monitoring scheme provided by the invention, the ONU operation state can be monitored in real time, the fault can be quickly responded, automatic switching can be carried out, and the continuity and the stability of network connection can be ensured, so that the overall performance and the user experience of a PON system can be effectively improved.

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.

The embodiment of the invention relates to an optical line terminal, an optical network unit, a related method, a device and a medium. In one aspect, an optical line terminal allocates at least one subcarrier and at least one time slot to an optical network unit from a plurality of subcarriers in a frequency domain and a plurality of time slots in a time domain based on channel condition information and traffic demand information of the optical network unit. And the optical line terminal sends resource allocation information to the optical network unit, wherein the resource allocation information indicates at least one subcarrier and at least one time slot allocated to the optical network unit. The optical line terminal performs communication with the optical network unit based on the at least one subcarrier and the at least one time slot. According to the embodiment of the invention, bandwidth resources are allocated in two dimensions of frequency and time according to corresponding flow requirements and channel conditions of different optical network units, so that an optical communication system can utilize available bandwidth resources of optical fiber infrastructures to the maximum extent.

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.

The invention discloses an electric power communication network system, which comprises an optical transmission network unit, a security access network unit, a 5G backup communication unit, a communication network management platform and a network security unit, the communication network management platform manages optical signal or electric signal transmission of the optical transmission network unit, the optical transmission network unit is in signal connection with the security access network unit, and the optical signal or the electric signal is transmitted to the user terminal through the security access network unit; the 5G backup communication unit is in signal connection with the optical transmission network unit to realize the reliability of network communication; and the network security unit is in signal connection with the security access network unit to realize the security of the security access network unit and the 5G backup communication unit. Wherein the security access network unit comprises a full-line optical network, the full-line optical network comprises an optical line terminal, an optical distribution network and an optical network unit at a user side which are in signal communication in sequence, and the other end of the optical line terminal is in signal connection with the optical transmission network unit.

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.

Example embodiments describe an optical line terminal (OLT) configured to communicate in a point-to-multipoint optical network with optical network units (ONUs); where the OLT and a respective ONU share a set of shared keys. The OLT configured to perform receiving, from a respective ONU, at least one identifier encrypted according to a preconfigured encryption algorithm and a preconfigured key; wherein the at least one identifier is characteristic for the respective ONU. The OLT configured to perform decrypting the at least one received identifier according to the preconfigured encryption algorithm and the preconfigured key; and determining at least one shared key based on the at least one decrypted identifier.