709 results about "Optical network unit" patented technology

Embodiments of the present disclosure relate to an optical line terminal (OLT), an optical network unit (ONU), communication methods, communication apparatuses, and computer-readable media. In an exemplary method, the OLT determines an optical communication capability of the OLT which includes at least one of the following: at least two upstream wavelength options supported by the OLT, a passive optical network (PON) mode associated with the OLT, and an upstream modulation format used by the OLT. In the method, the OLT further transmits, to the ONU, at least one indicator indicating the optical communication capability. In this way, the OLT can negotiate the optical communication capability with the ONU, thus avoiding data transmission failures or performance degradation caused by device incompatibility.

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 relates to a wavelength characteristic detection method and device, communication equipment and a computer readable storage medium. Comprising the following steps: in a current detection period, allocating uplink time slot resources for an optical network unit connected with a target port, and receiving uplink signals through each wavelength channel of the target port; the target port comprises a first wavelength channel and a second wavelength channel; the optical network unit under the first wavelength channel is in a working state, and the second wavelength channel is an expanded and upgraded wavelength channel; if the first uplink signal of the second wavelength channel is detected, determining a second uplink signal consistent with the receiving moment of the first uplink signal in the first wavelength channel; determining uplink time slot information corresponding to the second uplink signal; and determining the optical network unit corresponding to the uplink time slot information as an abnormal target terminal. According to the invention, the function of detecting whether the emission wavelength of the optical network unit conflicts with the extended and upgraded wavelength channel on line is realized, and installation and maintenance personnel do not need to carry out door-to-door detection and do not need to interrupt the existing service.

An optical network unit, ONU, (100) for a passive optical network, PON, comprising:a tunable receiver (110);a tunable transmitter (120); anda controller (130, 230) comprising a processor (132) and memory (134) containing instructions (136) executable by the processor whereby the ONU is operative to:if the tunable transmitter is on, switch the tunable transmitter off and if the tunable receiver is off, switch the tunable receiver on;determine a downstream control channel wavelength;set an operating wavelength of the tunable receiver to the downstream control channel wavelength;receive a downstream control channel signal at the downstream control channel wavelength from a central office, CO, node of the PON, the downstream control channel signal carrying an indication of an allocation of channel wavelengths to ONUs;obtain allocated downstream and upstream channel wavelengths for the ONU from the indication of an allocation of channel wavelengths to ONUs;set an operating wavelength of the tunable receiver to the allocated downstream channel wavelength and set the operating wavelength of the tunable transmitter to the allocated upstream channel wavelength; andswitch the tunable transmitter on.

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 discloses a power distribution network automatic communication data packet forwarding method based on an improved EPON technology, and the method comprises the steps: 1, classifying and scheduling data packets, and determining the transmission sequence of data packets with different priorities through weighted polling scheduling; step 2, an optical line terminal (OLT) receives the data packet and records sending address information and forwarding rules of the data packet; step 3, the ONU extracts a target address and a forwarding rule, and obtains a position and a connection state to calculate an optimal data transmission path; and step 4, monitoring and managing the operation state, and ensuring the forwarding stability and reliability of the data packet. According to the method for realizing artificial intelligence by improving the EPON technology, automatic communication data packet forwarding is realized, and the transmission efficiency is improved.

The invention provides an optical network conflict detection method and device and a storage medium, relates to the technical field of communication, and is used for identifying a target optical network unit causing coexistence conflicts. The method is applied to an optical line terminal, the optical line terminal accesses a first passive optical network and a second passive optical network, and the method comprises the following steps: in response to detecting that a first coexistence conflict feature exists, stopping uplink transmission of an optical network unit in the second passive optical network; when it is detected that the second coexistence conflict feature exists, uplink transmission of the optical network unit in the second passive optical network is recovered according to a preset strategy, and whether the first coexistence conflict feature exists or not is detected again; wherein the coexistence conflict degree represented by the second coexistence conflict feature is smaller than the coexistence conflict degree represented by the first coexistence conflict feature; and under the condition that the existence of the first coexistence conflict feature is detected again, determining that the optical network unit which recovers uplink transmission last time is a target optical network unit which causes the coexistence conflict.

The embodiment of the invention provides a downlink service sending method and device, a downlink service receiving method and device, a storage medium and an electronic device. The downlink service sending method comprises: an optical line terminal (OLT) shares a downlink time division scheduling result of a downlink service with an optical network unit (ONU) according to a first specified mode, the downlink time division scheduling result at least comprising sending moments of one or more downlink services; and the OLT sends a downlink service according to the downlink time division scheduling result. According to the method, the problem that the optical network unit cannot efficiently receive the downlink service sent by the optical network terminal is solved, and the technical effect that the optical network unit can efficiently receive the downlink service sent by the optical network terminal is achieved.

The utility model provides a passive optical network physical link monitoring system, which is provided with a pulse transmitting device, a coupling device and a detection device, the pulse transmitting device transmits optical pulses with different wavelengths, the wavelengths of the optical pulses correspond to n optical network units respectively, and the optical pulses are coupled to an optical distribution network through the coupling device, the detection device obtains the power and distance corresponding information of the optical pulses in the trunk line link and each branch optical fiber link, and can know the conditions of each position on the trunk line link and each branch optical fiber link. According to the application, the optical pulses with different wavelengths are used as monitoring signals to monitor the conditions of each optical fiber link and the trunk link respectively, potential threats of a physical link can be sensed in advance and early warning can be carried out, a fault point can be positioned in time after a sudden accident occurs, and daily maintenance and accident emergency repair of a passive optical network link are facilitated.

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 a passive optical network monitoring device and a detection method, and the device comprises a light generation module which is used for generating pulse light with a pseudo-random sequence; the circulator is used for enabling the optical signal to go down to the optical fiber trunk and sending the reflected uplink optical signal to the reflected light analysis module at the same time; the splitter distributes the downlink optical signals to the optical network units and gathers the uplink optical signals to the optical fiber trunk at the same time; and the reflected light analysis module is used for receiving the reflected light signal and analyzing the fault position based on the reflected light signal. According to the application, the pulse light with the pseudo-random sequence is generated through the light generation module, the pulse light can reach each branch link through the circulator and the splitter, the reflection points arranged on each branch link reflect the pulse light and return to the reflected light analysis module, and then the fault position is analyzed according to the reflected light signal. According to the invention, high-precision resolution can be realized by controlling the pulsed light with the pseudo-random sequence, and the method can be used for fault detection of a point-to-multipoint network.

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 provides an optical network unit energy-saving method, device and equipment, a storage medium and a program product, which are applied to the technical field of optical network communication. The method comprises the following steps: acquiring interface data of an optical network unit group reported by a virtual optical network unit, wherein the interface data comprises interface uplink flow and the number of connected wireless users; when the uplink flow of the interface is smaller than a first threshold value and the number of the wireless users is zero, an energy-saving instruction is sent to the virtual optical network unit; wherein the energy-saving instruction is used for enabling the virtual optical network unit to execute energy-saving operation.

The invention relates to the technical field of optical communication, in particular to a slice determination method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring a first resource slice of a first downlink port under the condition that the terminal accesses the first downlink port of each downlink port of a first optical network unit; determining a first service slice corresponding to the terminal according to the service information corresponding to the terminal; and determining slice information corresponding to the terminal according to the first resource slice and the first service slice. The process of determining the first resource slice and the first service slice corresponding to the terminal is optimized, the portability of determining the slice information corresponding to the terminal is ensured, the service experience of industry customers is improved, the flexibility and intelligence of an industrial PON network are improved, daily manual operation configuration of the industrial PON network is reduced, and the user experience is improved. And the requirements of industrial users on the operation convenience of the industrial PON network are met.

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 utility model discloses an optical fiber access terminal box and an optical fiber access device. The optical fiber access terminal box comprises a terminal box, an optical network unit and a cable, the terminal box comprises a cover plate and a box body, the box body is provided with a mounting cavity with an opening in one end, the cover plate movably covers the opening, and a connector is arranged on the outer side of the box body. The optical network unit is mounted on one side, facing the mounting cavity, of the cover plate; one end of the cable is connected with the optical network unit, and the other end is connected with the joint. According to the optical fiber access terminal box, the optical network unit is installed on the cover plate, so that wiring, installation and maintenance of the optical network unit are more convenient, meanwhile, compared with a structure in which the optical network unit is arranged in the box body, the optical fiber access terminal box can utilize the space in the terminal box more reasonably, the size of the structure is convenient to reduce, and the cost is reduced. Therefore, the optical fiber access terminal box is miniaturized.

The invention relates to the technical field of optical networks, and provides a metropolitan area-access all-optical convergence network system based on a digital subcarrier multiplexing technology. The system comprises a digital subcarrier-based continuous signal generation module in a metropolitan area node, a digital subcarrier-based burst signal generation module in an access network optical network unit, and a digital subcarrier beam splitting / combining module in a metropolitan area-access all-optical fusion node, the digital subcarrier-based west / east continuous signal receiving and processing module is arranged in the metropolitan area node; and the burst signal receiving and processing module is arranged in the access network optical network unit. All-optical fusion is achieved in a metropolitan area network and an access network system through the digital subcarrier multiplexing technology, delay and jitter caused by optical-electric-optical conversion can be effectively avoided, and precious wavelength resources are saved. In addition, different subcarriers are endowed with different functions, so that not only is bidirectional high-speed transmission realized, but also the flexibility of the network architecture is greatly 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.

Provided are a method and device for responding to a registration request. The method includes: an Alloc-ID configuration table sent by an Optical Line Terminal (OLT) is received, the Alloc-ID configuration table including corresponding relationships between Alloc-IDs and upstream rates; the Alloc-ID configuration table is parsed to determine a target Alloc-ID from the corresponding relationships between the Alloc-IDs and the upstream rates, the rates corresponding to the target Alloc-ID including the rate supported by an Optical Network Unit (ONU); and a registration request sent by the OLT is responded to based on the target Alloc-ID, the registration request carrying the target Alloc-ID.

The disclosed embodiments relate to an optical line terminal (OLT), an optical network unit (ONU), a communication method, a communication device, and a medium. In an example method, an optical line terminal determines its optical communication capability, the optical communication capability comprising at least one of: at least two uplink wavelength options supported by the OLT, a passive optical network (PON) mode associated with the OLT, and an uplink modulation format used by the OLT. And the optical line terminal also sends at least one piece of indication information for indicating the optical communication capability to the optical network unit. In this way, the optical line terminal can negotiate the optical communication capability with the optical network unit, and data transmission failure or performance reduction caused by incompatibility between devices is avoided.