316 results about "Passive optical network" patented technology

Provided are a resource allocation method and system for a passive optical network (PON) system, the resource allocation method comprising: an MFU obtaining target information, the target information being associated with a wireless demand corresponding to a first SFU and a wireless demand corresponding to a second SFU, each wireless demand corresponding to bandwidth demands of N terminal devices, the wireless demand corresponding to the first SFU is greater than the wireless demand corresponding to the second SFU; the MFU sends wireless allocation information, the wireless allocation information is used for indicating a first bandwidth allocated to the first SFU and a second bandwidth allocated to the second SFU, and the first bandwidth is larger than the second bandwidth. According to the method, the wireless resource demand of the connected user equipment is acquired, and the bandwidth of the SFU equipment is actively regulated and controlled according to the wireless resource demand, so that the bandwidth allocated to the SFU by the MFU is enabled to be matched with the bandwidth required by the wireless terminal equipment, and the utilization rate of wireless resources is improved.

The invention relates to the technical field of wastewater treatment, in particular to an intelligent wastewater recovery and zero discharge control system, which is suitable for efficient separation and resource utilization of high TDS (total dissolved solids) and high COD (chemical oxygen demand) wastewater, and realizes intelligent control and resource utilization of a wastewater treatment process by combining a dynamic Bayesian network and a deep reinforcement learning algorithm. According to the system, wastewater with high TDS (Total Dissolved Solid Concentration) and high COD (Chemical Oxygen Demand) is treated by monitoring wastewater characteristics in real time, dynamically optimizing operation parameters and adopting a cross-flow PON (Passive Optical Network) pollution-resistant design and a POM (Polyoxymethylene) wide flow channel design, so that the aims of efficient separation, deep concentration and zero emission are fulfilled.

The invention provides a vehicle-mounted passive optical network area gateway and a protocol conversion method. The gateway comprises an interface module which comprises a plurality of communication interfaces, wherein the communication interfaces are used for receiving messages of a low-speed network protocol; the data processing module adopts an FPGA (Field Programmable Gate Array) core board and is used for receiving a message, extracting effective information from the message, packaging the effective information to obtain an Ethernet protocol frame and converting the Ethernet protocol frame into an SDU (Service Data Unit); and the ONU optical module is used for performing data link layer processing on the SDU to obtain an uplink FS burst frame, and performing physical layer processing on the uplink FS burst frame to obtain a burst mode optical signal frame. The gateway can realize data access of multiple paths of CAN nodes, LIN nodes and vehicle-mounted Ethernet nodes at the same time, meets the communication protocol conversion function of low-speed nodes in each region in a real vehicle environment, and is integrated into a whole vehicle all-optical backbone network. The method is used for converting data complying with a low-speed network protocol into data complying with an XGS-PON protocol.

The invention provides a time division multiplexing-based inter-generation PON (Passive Optical Network) scheduling method and device. According to the method, modeling is carried out on association between uplink time slot resources of different intergenerational ONU terminals and total time slot resources of a PON port, a mathematical model of time slot resource allocation is obtained, the model is solved by adopting a unified scheduling algorithm, the unified scheduling algorithm can effectively coordinate bandwidth requirements of the different intergenerational ONU terminals, and the time slot resource allocation efficiency is improved. According to the method and the system, the 50G-PON terminal with high priority is ensured to obtain enough resources, meanwhile, the resource utilization rate of the whole PON network is optimized, and the service requirements of other intergenerational (such as EPON and 10G-EPON) ONU terminals are considered on the basis of ensuring that the system meets the 50G-PON priority requirements, so that the time division multiplexing coexistence of a multi-intergenerational PON system is realized. The problem that the EPON cannot coexist with the 50G-PON due to the fact that the uplink wavelength range of the EPON is too wide is solved.

Example embodiments relate to passive optical networks (PONs) and in particular to the communicating of registration identifiers associated with peripheral communication units which may be used as part of an activation procedure. For example, one example embodiment comprises an apparatus, which may comprise means for receiving, over a passive optical network and from a peripheral communication unit, a data message which include an encrypted registration identifier associated with the peripheral communication unit and wherein the registration identifier is encrypted using a public key associated with the apparatus. The apparatus may also comprise means for decrypting the data message using a private key associated with the public key to determine the registration identifier associated with the peripheral communication unit.

The invention discloses a smart campus Internet of Things multi-service collaborative scheduling control system based on an all-optical network, and relates to the technical field of Internet of Things, and the system comprises an Internet of Things digital platform which is in communication connection with the following modules: an all-optical network infrastructure module which is used for constructing an optical fiber backbone network in a campus, and each subsystem in the campus is accessed. The reliability and stability of the campus Internet of Things are enhanced by constructing all-optical network infrastructure, the subsystems are directly connected through optical fibers by adopting the passive optical network technology, and the use of active equipment is reduced, so that the equipment failure rate and the maintenance cost are reduced, optical wavelength resources are dynamically allocated by utilizing a software defined network controller, and the reliability and the stability of the campus Internet of Things are improved. The transmission path is adjusted according to the service priority, efficient operation of key services is ensured, network stability is improved, high speed and safety of data transmission are guaranteed, and solid network support is provided for various intelligent applications in the campus.

The invention relates to the technical field of passive optical networks, and discloses a dual-core optical fiber link loss self-repairing and redundancy switching method, which comprises the following steps of: establishing a resonance transmission state sensitive to physical disturbance; when the state is damaged due to disturbance, forced reconstruction and secondary confirmation are executed firstly instead of being switched immediately so as to distinguish transient impact and a hard fault, and the state is physically switched to a standby link only after the hard fault is confirmed. A traditional indirect mode depending on external measurement and threshold judgment is changed, and judgment delay and response delay are avoided; a secondary confirmation mechanism effectively avoids unnecessary switching caused by transient disturbance, and the operation stability of the system in a complex environment is improved.

Hub node of a passive optical network, wherein the hub node includes a DSP (Digital Signal Processing) chain configured to: Receiving a signal burst from a leaf node in the passive optical network, wherein the signal burst comprises a frame including a payload and a frame header, the frame header comprising a clock and gain control section, a frame detection section and an equalizer section; Retrieving a clock phase of the leaf node from the clock-and-gain control section of the frame header; Estimation of the signal strength of a signal burst from the leaf node in the passive optical network; Compensation for differences in the signal power of the signal burst from the leaf node; Detecting a frame alignment sequence that indicates the arrival of the signal burst; Determination of MIMO (Multiple Input, Multiple Output) polarization filter coefficients from the frame alignment sequence; Aligning the phase between the X-polarization and Y-polarization of the signal burst using the MIMO polarization filter coefficients; and Determine the frequency offset estimate (FOE) of a local oscillator signal.

The invention provides a communication method, a communication device and a PON (Passive Optical Network) system, which can solve the problem of SN (Serial Number) conflict in a PON network and improve the system performance of the PON network. The method comprises: an OLT device receives a first SN from a first ONU device in a first time window, allocates a first ONU identifier to the first ONU device, and then broadcasts and sends first indication information and the first ONU identifier, the first indication information being used for indicating that the OLT device successfully allocates the first ONU identifier to the first ONU device. Thereafter, the OLT device receives a second SN from the second ONU device at a second time window, the second SN being the same as the first SN. And the OLT device determines whether to allocate a second ONU identifier to the second ONU device based on the authentication result of the first ONU device.

The invention discloses a hot patch management method in a passive optical network system, a storage medium and an electronic device, in a Linux system, a patch management process running in a user mode and a patch management unit running in a kernel mode cooperatively execute, and the method comprises the steps that after the patch management process completes loading of a patch pack, the patch pack is loaded in the user mode; acquiring a patch function address and an original function address in the patch pack to obtain a corresponding relation, and configuring the corresponding relation to a patch management unit; when the original function is called, the original function determines to execute the original function logic or jump to the address indicated by the hook parameter by judging the value of the hook parameter; and the patch management unit registers a corresponding probe for each patch function according to the corresponding relationship so as to trigger a processing function of the probe to execute an operation of modifying the value of the hook parameter into a corresponding patch function address before the original function is executed, so that an execution process is skipped to the patch function when the original function is called, and the original function is called. And managing the function-level hotfix of the kernel mode and the user mode in the same framework.

The invention provides a communication device, a communication method, communication equipment and a passive optical network, relates to the field of communication, and aims to analyze a message from a signal corresponding to a received communication protocol, convert the message into a signal corresponding to another communication protocol and output the signal. The communication device comprises a first interface, a processing circuit, a PON circuit and a second interface, the processing circuit is coupled with the first interface and the PON circuit, and the PON circuit is coupled with the second interface; the first interface is used for the communication equipment and is specifically used for receiving a first signal transmitted by the communication equipment and analyzing a first message from the first signal, and the first message comprises a message of a first communication protocol; the processing circuit is used for converting the first message into a second message, and the second message comprises a message of a second communication protocol; the PON circuit is used for converting the second message into a second signal; and the second interface is used for coupling a passive optical fiber network and is particularly used for transmitting the second signal to the passive optical fiber network. The embodiment of the invention is applied to the field of communication.

A coexistence element within a passive optical network (PON) includes a housing having a plurality of input communication ports. Each input communication port is configured to receive, via a separate optical fiber, optical communications each having a wavelength within a particular wavelength band corresponding to a particular optical service. At least one of the input communication ports is configured to receive optical communications having wavelengths within two or more different wavelength bands. The housing also includes an output communication port configured to transmit, via a single optical fiber, the optical communications from each of the plurality of input communication ports.

The invention discloses an industrial multi-protocol communication device and method based on a PON technology. The industrial multi-protocol communication device based on the PON technology comprises an optical module, a PON chip module, a processor module and a field bus interface module, the processor module is used for converting a standard Ethernet signal into a field bus signal. Therefore, the processor module mainly adapts to different protocol standards through software configuration instead of needing special hardware support for each protocol, so that the industrial multi-protocol communication device based on the PON technology can meet various protocol requirements and realize access of one or more field buses, thereby replacing a plurality of communication modules, and improving the communication efficiency of the industrial multi-protocol communication device based on the PON technology. The equipment cost is effectively reduced, the utilization efficiency of equipment space is improved, and the power supply pressure is relieved.

The application provides a resource allocation method and system of a passive optical network (PON) system, wherein the resource allocation method comprises: an MFU obtaining target information, the target information being associated with wireless demand corresponding to a first SFU and wireless demand corresponding to a second SFU, each wireless demand corresponding to bandwidth demand of N terminal devices, wherein the wireless demand corresponding to the first SFU is greater than the wireless demand corresponding to the second SFU; and the MFU sending wireless allocation information, the wireless allocation information being used for indicating first bandwidth allocated for the first SFU and second bandwidth allocated for the second SFU, the first bandwidth being greater than the second bandwidth. In the above method, the wireless resource demand of the connected user equipment is obtained, and the bandwidth of the SFU equipment is actively regulated according to the wireless resource demand, so that the bandwidth allocated for the SFU by the MFU is adapted to the bandwidth required by the wireless terminal equipment, and the utilization rate of the wireless resource is improved.

A resource allocation method for a passive optical network (PON) system, and a system. The resource allocation method comprises: an MFU acquires target information, the target information being associated with a wireless requirement corresponding to a first SFU and a wireless requirement corresponding to a second SFU, and each wireless requirement corresponding to bandwidth requirements of N terminal devices, wherein the wireless requirement corresponding to the first SFU is greater than the wireless requirement corresponding to the second SFU; and the MFU sends wireless allocation information, the wireless allocation information being used for indicating a first bandwidth allocated to the first SFU and a second bandwidth allocated to the second SFU, wherein the first bandwidth is greater than the second bandwidth.

The invention relates to the technical field of optical network transmission, in particular to a twenty-five gigabit symmetric passive optical network transmission quality improvement method and a related device. The method comprises the steps that PCB routing layout optimization is conducted on an LD + / LD-differential signal line in a transmission link, impedance control over the differential signal line is achieved by adjusting the wiring gap and the wiring width of the LD + / LD-differential signal line and the integrity of a reference layer area, the consistency difference in PCB production is improved, and loss and interference in the signal transmission process are reduced. The PCB layout parameters of the LD + / LD-differential signal line are specifically optimized, the wiring gap is adjusted from 11.49 mi of a reference golden finger bonding pad to 5.75 mi of a reference chip BGA bonding pad, the wiring width is reduced from 20 mi to 10 mi, the integrity of a reference layer area is synchronously optimized, the differential impedance is accurately controlled from original 30 ohms to 60 ohms, and the reliability of the circuit is improved. And the parasitic parameter influence in signal transmission is effectively suppressed.

The invention relates to a computing power cooperation method, a computing power cooperation system, communication equipment and a computer readable storage medium in a passive optical network. The method comprises the following steps that: an OLT (Optical Line Terminal) computing power gateway receives a computing power calling request from a computing power arrangement system through a network management system of a passive optical network, or receives a computing power calling request from a service unit in the passive optical network; the computing power arrangement system calls computing power resources of the edge side computing power network and / or the passive optical network according to arrangement requirements; determining a corresponding scheduling strategy according to the business service level protocol and the computing power calling request; and calling a computing power node in the passive optical network to execute a computing task corresponding to the computing power calling request according to the scheduling strategy. According to the method, the OLT computing power gateway is used for achieving computing power cooperative scheduling of the OLT side in the PON network, the service SLA requirement can be met, computing power resources in the PON network are provided for the computing power network, and the maximization of the computing power utilization rate of the whole network is achieved.

Various example embodiments supporting optical communications in an optical communication system may be configured to support joint stimulated Brillouin scattering (SBS) suppression and polarization tracking for a set of orthogonal polarization optical channels in an intensity modulated / direct detection (IM / DD) passive optical network (PON). Various example embodiments may be configured to support joint SBS suppression and polarization tracking for a set of orthogonal polarization optical channels based on a set of frequency tones (e.g., using a single frequency tone per optical channel in the set of orthogonal polarization optical channels, respectively) such that SBS suppression is supported for transmissions from the transmitter (e.g., based on application of the frequency tones to the optical channels) and polarization tracking is supported at the receiver (e.g., based on use of one or more of the frequency tones of the optical channels in the set of orthogonal polarization optical channels for polarization tracking).

The invention provides a data forwarding method based on a vehicle-mounted passive optical network and a related device, and relates to the technical field of vehicle communication. In the data forwarding method, the first ONU gateway aggregates and packages the received multiple frames of messages into the same uplink GEM frame, so that the multiple frames of messages share the same GEM frame header, the frame header overhead in the low-speed data transmission process is effectively reduced, and the bandwidth utilization rate of the vehicle-mounted PON network is improved. Meanwhile, message grouping, uplink GEM frame packaging and uplink burst frame coding are directly completed through the first ONU gateway, the uplink burst frame is sent to the OLT, time delay and system resource consumption are reduced, the high real-time requirement of low-speed data (such as a sensor and a control signaling) in a vehicle-mounted scene is met, and therefore efficient and low-delay bearing of the low-speed data on a vehicle-mounted PON network is achieved.

An optical network communication system utilizes a CPON. The system includes an OLT and an ONU. The OLT includes an OLT transmitter for transmitting a downstream signal, and an OLT receiver for detecting an upstream signal. The downstream signal includes a first tone centered at a first frequency, a second tone centered at a second frequency, and first and second downstream subcarriers distributed proximate the first frequency. The upstream optical signal includes first and second upstream subcarriers distributed proximate the second frequency. The ONU includes an ONU receiver for detecting the first and second downstream subcarriers using the first optical tone to generate an LO signal for coherent detection, and an ONU transmitter configured to generate the first and second upstream subcarriers using the second optical tone. The first and second tones, downstream subcarriers, and upstream subcarriers do not overlap in the frequency domain

The present patent describes methods and systems for the efficient integration and management of time-sensitive networking (TSN) networks using passive optical network (PON) components. The main focus is the creation of a harmonized interconnection between TSN networks and PON systems, optimizing the performance of time-sensitive communications. The proposed method includes the abstraction of PON links so that they function as TSN bridges, implementing advanced time synchronization and traffic scheduling systems, in accordance with standards IEEE 802.1AS (gPTP) and IEEE 802.1Qbv. The interconnection system is characterized by integrated time synchronization means, suitable processing units and network elements configured to manage quality of service (QoS). In addition, the method includes the dynamic configuration of TSN flow sessions, using a centralized network controller (CNC) for optimized management of TSN traffic and QoS in PON networks. The invention further introduces a new specific management framework for PON networks in TSN environments, ensuring efficiency and compatibility in data transmission. The invention represents a significant advance in the interoperability and performance of TSN and PON networks, offering a robust solution for time-sensitive data communications in a variety of application contexts.

The invention relates to a branch identification system and method of a passive optical network. The system comprises a central control unit, a light emitting module, a polarization analysis unit and a plurality of polarization control modules deployed in an optical splitter, wherein the plurality of polarization control modules are in one-to-one correspondence with a plurality of ports of the optical splitter; the optical transmitting module transmits a detection signal to the passive optical network; the polarization control module carries out modulation processing on the received detection signal according to a preset polarization state modulation rule, generates a reflection signal carrying a polarization fingerprint and transmits the reflection signal to the polarization analysis unit; the polarization analysis unit analyzes polarization fingerprints according to the reflection signals and sends the polarization fingerprints to the central control unit; and the central control unit determines a branch serial number corresponding to the reflection signal according to the polarization fingerprint, and determines a branch link identification result. By adopting the system, the identification of a plurality of branch links in the passive optical network is realized, manual intervention is not needed, normal communication service does not need to be interrupted, the network maintenance efficiency is improved, and the manpower and time cost is reduced.

The invention discloses a multi-user multi-service passive optical network dynamic bandwidth allocation method, and belongs to the field of optical access networks and industrial internet. According to the passive optical network dynamic bandwidth allocation method based on traffic classification, a differential allocation method is provided for different types of traffic of users by improving the architecture and the bandwidth allocation method of a traditional time division multiplexing passive optical network; and bandwidth resource allocation with high bandwidth utilization rate and high framework flexibility is realized in an optical access network scene oriented to the industrial internet. According to the invention, by dividing the two virtual OLT and the two slices which are logically isolated, the flexibility and the expandability are improved; historical traffic data are collected and input into a joint neural network model, accurate traffic classification is carried out, and differential resource allocation is realized; the user data traffic is divided into specific network slices through traffic classification, and different bandwidth allocation methods are adopted in different slices, so that the utilization rate of bandwidth resources of the whole network is improved.

The invention provides an optical module and optical communication equipment, the optical module comprises a first optical transmitter, a second optical transmitter, a polarization beam combiner and an interface, the first optical transmitter is used for transmitting first signal light propagating along a first direction, and the polarization state of the first signal light is a first polarization state; the second light emitter is used for emitting second signal light propagating along a second direction, and the polarization state of the second signal light is a second polarization state; the polarization beam combiner is used for receiving the first signal light and the second signal light, combining the first signal light and the second signal light into mixed light, and transmitting the mixed light to the interface. On the basis of a wavelength division multiplexing scheme of a passive optical network at present, two optical transmitters are combined into one path by utilizing a polarization coupling scheme, so that the isolation degree between signal light of a current multi-transmission scheme is ensured, the complexity of an internal optical path is reduced, and a multi-transmission form optical module scheme with high transmission quality, low crosstalk and high integration level is realized.

The invention discloses a PON (Passive Optical Network) equipment research management method based on an MAC (Media Access Control) address, which relates to the technical field of communication, and comprises the following steps: S100, collecting routing table information, ARP (Address Resolution Protocol) information and LLDP (Local Link Distribution Protocol) information; s200, classifying the acquired equipment information by using equipment identifiers, distinguishing equipment types, acquiring PON port names and indexes of OLT equipment and opposite-end ONU MAC addresses under the PON ports according to private MIB information of manufacturers for network equipment and OLT equipment, and mapping and storing OLT information; s300, constructing a link between the network equipment and a link between the network equipment and the OLT equipment, and constructing a link between the OLT and the ONU through an automatic link construction algorithm; s400, generating a network topological graph; and S500, displaying the network topological graph, reflecting the link state and providing an alarm function. The PON equipment research management method and system realize PON equipment research management.

The invention relates to the technical field of optical fiber fault detection, in particular to a health monitoring system and method for a water diversion engineering optical fiber network, and the system comprises a sensing module which is used for synchronously collecting optical fiber environment parameters through an edge calculation node and a multi-source sensor array; the transmission network construction module is used for carrying out short-distance networking and constructing a backbone transmission network by adopting an industrial grade PON (Passive Optical Network) optical fiber network; the cloud management platform is used for preprocessing the data acquired by the transmission network construction module; inputting the preprocessed data into a preset D-S evidence theory fusion model to obtain an early warning trigger signal; and the fault classification module is also used for carrying out fault positioning and classification through the trained fault classification model after the edge node detects an abnormal signal, and outputting a fault position and a fault type. According to the invention, the problems of insufficient real-time performance and incapability of dealing with sudden faults in the prior art can be solved; the positioning precision and the fault identification capability are limited; the long-distance deployment cost is high; and the management complexity is high.

The invention belongs to the technical field of deterministic transmission, and particularly relates to a deterministic transmission method for a time division multiplexing passive optical network in computing power-power cooperative communication network networking, which comprises the following steps of: acquiring and identifying all time delay sensitive flows accessed to a TDM-PON (Time Division Multiplexing-Passive Optical Network), and pre-classifying periodic flows; clustering the similar periodic flow to form a shaping flow, and distributing a shaping window; calculating the least common multiple of all shaping flow periods as a super period; in a super cycle, an integer linear programming model is adopted to complete initial optimization time window distribution; carrying out secondary sorting and conflict elimination on the overlapped transmission windows, and scheduling the shaping stream by using the transmission windows after secondary optimization; the non-periodic flow is scheduled by using the idle time slot in the over-period; and continuously multiplexing a super-cycle scheduling scheme to complete a deterministic transmission process. According to the invention, high scheduling success rate, millisecond-level deterministic time delay and microsecond-level jitter control of large-scale periodic services are realized.

The invention provides a dumb resource management method and system, electronic equipment, a storage medium and a program product. The method comprises the following steps: acquiring an image of a passive optical network port resource through a micro camera; preprocessing the image through the edge cloud to obtain a preprocessing result; performing information extraction on the preprocessing result through the central cloud to obtain first resource information of the passive optical network port resource; and verifying the first resource information and the second resource information, and performing resource information management according to a verification result. According to the dumb resource management method provided by the invention, a passive optical network port resource image is collected through a micro camera, the edge cloud is utilized to preprocess the passive optical network port resource image to quickly obtain a preliminary result, and then the center cloud performs depth information extraction based on the preprocessing result to obtain first resource information; and the second resource information read by the resource system is verified, and accurate resource information management is realized according to a verification result, so that full-process automatic dumb resource management is realized.

In various embodiments, the present disclosure includes a system for sending 50 gigabits per second (Gbps), 75 Gbps, and 100 Gbps at 50 gigabaud (GBaud) for passive optical networks (PON) downstream and upstream. The system allows for transmission of three data rates at a single baud-rate while only using 2-bits of information per sample. A motivation for sending three data rates at a single baud-rate is to allow for further granularity in the control of the data-rates for downstream and upstream traffic in a flexible PON system based on the link margin. For example, the system can use non-return-to-zero (NRZ) at 50 GBaud for 50 Gbps and can use four-level pulse-amplitude modulation (PAM-4) at 50 GBaud for 100 Gbps. In addition for 75 Gbps, a double square-8 (DSQ-8) constellation can be used at 50 GBaud.

The present disclosure relates to a monolithically integrated dual-wavelength transmitter for a passive optical network (PON), which may be suitable for both a gigabit PON (GPON) and a 10-gigabit-PON (XG-PON). The integrated transmitter includes two distributed feedback (DFB) lasers, a first DFB laser to emit a continuous first laser beam at a first wavelength along an optical path, and a second DFB laser to emit a modulated second laser beam at a second wavelength along the optical path in the same direction as the first DFB laser. The transmitter also includes an electro-absorption modulator (EAM) after the first DFB laser in the optical path, which is configured to modulate the first laser beam, and a distributed Bragg reflector (DBR) between the EAM and the second DFB laser in the optical path, which is configured to transmit light at the first wavelength