115 results about "Bandwidth requirement" patented technology

The invention discloses a centralized phased array beam control method and system based on an FPGA, and relates to the technical field of phased array beam control, and the method comprises the steps: carrying out the real-time iterative operation through an incremental adaptive correction kernel in a centralized control FPGA, and obtaining an amplitude-phase correction increment and a corresponding target effective frame number; performing increment differential coding on the amplitude-phase correction increment and the corresponding target effective frame number in a centralized control FPGA (Field Programmable Gate Array) to generate an increment differential beam control message; sending the increment difference beam control message to an array element FPGA (Field Programmable Gate Array) at the front end of an array, executing frame-level atom switching according to a target effective frame number, and fusing the amplitude-phase correction increment and a locally stored old beam control weight in the switching process to obtain a final array element beam control weight; generating a real-time beam control directional diagram based on the final array element beam control weight; the stability and convergence precision of beam control are improved, and the bandwidth requirement of a control link is reduced.

The invention relates to an intelligent ship network optimization method, system and device based on multi-link convergence and a medium. The method comprises the following steps: firstly, acquiring multi-network link connection parameters of the intelligent ship, constructing an adaptive environment, modifying a protocol stack, and integrating a physical link into a virtual link to realize resource convergence; and based on the real-time parameters of the virtual link and the physical link, dynamically distributing traffic by adopting an improved aggregation protocol, and generating a load balancing scheme. And then, regularly sending a detection packet quality index, and predicting a link quality trend in combination with historical data and navigation longitude and latitude. And finally, dynamically adjusting flow distribution according to a prediction result, an application real-time demand, a bandwidth demand and a current position tariff characteristic, and generating a ship-shore communication scheme considering both efficiency and cost. By adopting the method, the stability, reliability and economy of ship-shore communication of the intelligent ship can be effectively enhanced, and the method is suitable for multi-scene network monitoring optimization.

The invention discloses a self-reference three-phase polarization imaging system and method based on an integrated photon neural network, and the method comprises the steps: setting a fixed phase difference in a silicon-based photon chip to achieve three-phase projection and single-port reading, outputting a three-phase interference signal at the same time, obtaining all phase and polarization information in one-time imaging to achieve full-polarization measurement, and carrying out the single-port reading of the silicon-based photon chip; according to the invention, the effective resolution ratio is consistent with that of an original detection array, power and temperature drift is eliminated, single-frame acquisition has no time sequence error and motion artifact, a stable and compact single-port self-reference reading mode is realized through a three-phase interference measurement architecture constructed on a chip in combination with channel normalization and rotation correction, and complete Stokes parameters and polarization information can be measured. According to the system provided by the invention, the MZI is adopted, so that the phase bias can be flexibly adjusted, and different bandwidth requirements can be met by adjusting an interference path. The silicon-based photon platform has a broadband response characteristic and can cover a visible wave band, so that the device can keep stable interference performance in a communication wave band.

The invention relates to the technical field of video processing, and provides a diffusion model-based video super-resolution reconstruction method for an unmanned aerial vehicle in order to avoid the problems of optical flow alignment errors and limited computing power of the unmanned aerial vehicle, comprising video compression and fuzzy degradation modeling and video diffusion converter model construction. Carrying out iterative optimization and observation consistency correction; and reducing the potential representation after iterative optimization into a high-resolution video frame through a decoder to complete super-resolution reconstruction. And meanwhile, the bandwidth requirement is reduced, and the weak network adaptability is better. Due to the adoption of the technical scheme, accurate reconstruction of a high-resolution video is realized in a low-dimensional potential space. Therefore, the problem of edge artifacts caused by motion estimation errors in a traditional method is thoroughly solved, and the definition and the natural sense of a reconstructed video are remarkably improved.

A method for content delivery to a user device, that helps to reduce bandwidth requirements and increases security of the content. The method includes receiving a download request from the user device, the download request including request data corresponding to characteristics of the user device, analyzing the request data to select a bootstrap module; transmitting the bootstrap module to the user device for download; analyzing an authentication characteristic to determine that the user device is authenticated for content viewing; transmitting a content catalogue to the user device; and upon receiving a user selection of a content item from the content catalogue, transmitting the user selected content item to the user device.

The embodiment of the invention relates to a data processing method and device, equipment, a medium and a program product. The method includes obtaining first media content at a client, the first media content corresponding to a first modality of a plurality of modalities for a multi-modality model. The method further includes generating a first content feature for the first media content based on a first portion of the multi-modal model deployed at the client. The method further includes sending the first content feature to the server to process the first content feature and a second content feature of second media content corresponding to a second modality of the plurality of modalities using a second portion of the multi-modality model deployed on the server. The method further includes receiving, from the server, processing results for the first media content and the second media content output by the multi-modal model. Through the method, the multi-modal model is deployed on the client and the server in a mixed manner, so that the time delay is reduced, the bandwidth requirement of the service is reduced, and the calculation cost of the server is reduced.

The invention discloses a satellite communication data processing method and system for an electric power inspection unmanned aerial vehicle, and relates to the technical field of communication data transmission, and the method comprises the following steps: carrying out the preprocessing of communication data; performing queue sorting on the pre-processed communication data, and sending the pre-processed communication data; and restoring the received communication data. According to the method, the electric power inspection unmanned aerial vehicle data is classified, the transmission priorities and the sending time limits of various types of data are determined, classified and graded transmission of the data is achieved, the satellite communication data transmission amount can be effectively reduced for the conditions that the number of bytes of a data packet is large and the data content change is not large, and the satellite bandwidth requirement is lowered; according to the method, satellite communication charges are saved, efficient utilization of satellite bandwidth resources is achieved, sending queue sorting is conducted through priority and sending time limit comprehensive judgment, the data sending sequence can be reasonably arranged, preferential transmission of emergency data is guaranteed, and orderliness of data transmission is improved.

The embodiment of the invention provides a method, a device and equipment for determining a data flow of a system on a carrier rocket. The method comprises the following steps: acquiring operation data and working condition data of the carrier rocket; determining a task stage of the carrier rocket according to the operation data and the working condition data; according to the task stage, determining a data stream of a system on the carrier rocket, the data stream comprising at least one of transmission path planning, bandwidth allocation and priority adjustment; acquiring communication state data of the carrier rocket; according to the communication state data, adjusting a data flow of a system on the carrier rocket to obtain a target data flow; and outputting the target data stream. According to the embodiment of the invention, bandwidth requirements of different stages can be matched in real time, bandwidth waste or insufficiency caused by fixed allocation is avoided, and the problem of poor dynamic change adaptability of the task stage is solved.

A method for compressing Sounding Reference Signal (SRS) channel information in massive MIMO systems is disclosed. When SRS channel estimation is performed in a Radio Unit (RU), the resulting channel estimates create significant fronthaul bandwidth demands. The method transforms SRS channel estimates from antenna space to domains with superior energy compacting properties, enabling transmission of only a subset of channel values while preserving information quality. The method includes beam space compression using mathematical transforms such as DFT, SVD, or EVD to convert channel estimates to beam space, followed by selection of the most significant beams. Alternative embodiments include tap domain compression using DCT or DFT, and delay-Doppler domain compression. The methods support static beam space compression using predefined beam bases and dynamic compression employing adaptive beam bases. O-RAN C-Plane implementations extend Section Type 6 to support the compression methods. The methods significantly reduce fronthaul bandwidth requirements while maintaining channel estimation accuracy, enabling improved system capacity in massive MIMO deployments.

The invention discloses a cache data processing method, device, system and equipment. The method comprises the following steps: writing data of a plurality of write requests into the same cache line in a write-back mode; if the bandwidth of the next-level storage device of the cache is in an idle state, expelling the first target dirty bit cache line to the next-level storage device; and if the duration between the current time and the last periodic expelling time reaches a duration threshold value, expelling the second target dirty bit cache line to the next-level storage device. By the adoption of the processing mode, under the conditions that GPGPU application is sensitive to the bandwidth of the downstream storage device of the cache and a large amount of bandwidth requirements exist in a short time, idle bandwidth of the downstream storage device can be fully utilized, the number of dirty bit cache lines is reduced while cache merging is written, and the final cache direct writing effect can be ensured through cycle expelling; therefore, relatively high data consistency and relatively low bandwidth requirements can be effectively considered, so that the bandwidth influence of cache direct writing is reduced.

The application provides a communication service processing method and device, network equipment and a storage medium. The method comprises the following steps: if the bandwidth of the IP network does not meet the bandwidth requirement of the to-be-processed service set, planning each to-be-processed service through a virtual IP path in an optical network and a backup IP path set of the to-be-processed service set in the IP network; adjusting the virtual IP path and continuously planning each to-be-processed service until all to-be-processed services in the to-be-processed service set are planned or the total bandwidth of the to-be-processed services successfully planned in the to-be-processed service set remains unchanged. The technical scheme provided by the embodiment of the application plans each to-be-processed service according to the backup IP path of the to-be-processed service and the virtual IP path in the optical network, and continuously adjusts the virtual IP path until the expected requirement is met, thereby improving the bandwidth utilization rate of the IP network and the optical network and improving the service processing capacity.

A scattering parameter measurement device based on microwave photonic mixing includes a microwave generation module 1, a signal loading module 2, a local oscillator frequency generation module 3, a multi-channel microwave photonic mixing module 4, an analog-to-digital converter (ADC) module 5, and a signal processing module 6. Along the signal output direction of the multi-channel microwave photonic mixing module 4, the ADC module 5 and the signal processing module 6 are sequentially arranged. This invention utilizes microwave photonic mixing technology and a local oscillator source with relatively small bandwidth to down-convert a high-frequency microwave signal to a fixed-frequency intermediate frequency (IF) signal. This reduces the bandwidth requirements of the receiver's electronic components and the sampling rate requirements of the ADC. It abandons the traditional superheterodyne structure and / or direct conversion structure, using a miniaturized continuous optical module as the light source for microwave photonic mixing, simplifying the system structure and reducing cost and power consumption.

The invention belongs to the technical field of communication, and relates to a network traffic configuration method and device, electronic equipment and a computer readable storage medium. The network traffic configuration method at least comprises the following steps: acquiring a virtual network traffic configuration request, wherein a virtual network comprises a plurality of virtual links; acquiring information of a physical network, wherein the physical network comprises a plurality of physical links; obtaining a bandwidth demand of a virtual link and a bandwidth capacity limit of a physical link; mapping each virtual link to a plurality of actual mapping paths on a physical network by adopting a path divisible mapping algorithm; each actual mapping path comprises a plurality of physical links which are connected in sequence, and the actual mapping paths can meet the bandwidth requirements of the virtual links and the bandwidth capacity limitation of the physical links at the same time; packaging the information containing the actual mapping path in a data packet; and the data packet can be transmitted along the actual mapping path. According to the network flow configuration method, the newly added virtual link can be conveniently embedded into the physical network.

Disclosed is a multi-entangled photon source-based multi-level user quantum key distribution network and distribution method. Bandwidth requirements can be effectively dispersed by introducing a plurality of entangled photon sources, enabling a quantum entanglement-based quantum secure communication network supporting a plurality of users to be possible. When arranging the second-level photon source, problems of transmission loss and quantum key rate decline caused by an excessively long distance between users in a same user group and a central entangled photon source can be effectively alleviated. Under a multi-user hierarchical framework, the pressure of the central photon source has been further reduced, which provides the possibility for building an entanglement-based secure communication network with more users and a wider range.

The invention relates to the technical field of aviation aircraft control, and provides a four-rotor unmanned aerial vehicle control system, a control method and an unmanned aerial vehicle. The system comprises a reference signal input and error calculation unit, a multi-integration and gain combination unit, a disturbance observer (DOB) unit, a servo driving unit and a model-free observer (Obs.) unit. The control method comprises the following steps: acquiring a reference signal and an observer signal, calculating an error, performing multi-integration and gain combination processing to obtain a basic control quantity, combining disturbance compensation, converting the basic control quantity into a motor speed reference instruction to drive the rotor to act, and forming closed-loop control by using the observer. Experiments prove that under different bandwidth requirements, the method is good in dynamic performance, high in convergence speed, free of overshoot and high in external disturbance suppression capacity, and has remarkable advantages compared with an existing method of a PZC controller based on an observer and the like.

The invention relates to a generator set wireless synchronous grid-connected system and method based on edge calculation, and relates to the technical field of power system grid-connected control. Phase difference calculation and switching-on decision are locally completed at a commercial power side operation and maintenance terminal, a top-speed control closed loop is constructed, the influence of wireless communication delay on switching-on precision is avoided, and the switching-on precision is improved. A'difference value direct transmission 'mode is adopted, only lightweight adjustment instructions are transmitted, the requirement for communication bandwidth is reduced, the anti-interference performance and reliability of the system are improved, a multi-mode grid-connected mechanism is introduced, different modes can be flexibly switched according to the conditions of field equipment, high efficiency, safety and wide adaptability are achieved, and the method is suitable for large-scale popularization and application. The problems that a traditional wired scheme is high in operation risk, and an existing wireless waveform transmission scheme is large in delay and poor in precision are effectively solved.

A multi-fiber multi-channel wavelength division multiplexing (WDM) device (100), and an optical communication system using the multi-fiber multi-channel WDM device (100). The multi-fiber multi-channel WDM device (100) comprises: a first microlens array (10), a filter unit (20), a transparent substrate (30), and a second microlens array (40). The first microlens array (10) comprises microlenses arranged in M rows and N columns, wherein M represents the number of wavelength channels, and N represents the number of optical fibers; the filter unit (20) comprises M filter bands each having a center wavelength; a first surface (31) of the transparent substrate (30) is partially coated with a total reflection coating; and the second microlens array (40) comprises microlenses arranged in one row and N columns, wherein N represents the number of optical fibers. The shaping of light beams is realized by means of the microlens arrays, and the multi-fiber multi-channel WDM device (100) is used to increase the bandwidth of a current network based on standard WDM technology by N times, thereby satisfying bandwidth requirements of big data processing for optical communication at the present stage.

The invention provides a multi-terminal cooperative transmission management method based on a QUIC protocol in intelligent education recording and broadcasting, and relates to the technical field of intelligent education, and the method comprises the steps: dividing all access terminals into a plurality of cooperative groups according to terminal types, network access modes and geographic areas, and distributing an independent bandwidth pool for each cooperative group; an independent bandwidth pool is allocated based on each collaborative group, QUIC connection of each collaborative group is monitored, an aggregation bandwidth demand is calculated and compared with a link bearing upper limit, and a slow start threshold value down-regulation instruction is generated to suppress bandwidth competition so as to obtain an adjustment result; and according to the adjustment result, performing initial transmission priority marking on different service data streams, and executing a differential retransmission control strategy in the QUIC multi-stream transmission channel. According to the invention, a complete collaborative link from access to transmission to synthesis to optimization is formed, and the full-scene demand of intelligent education recording and broadcasting is fully covered.

Instead of maximizing the possible bandwidth of device, utilize time slice credits (TSC), to ensure bandwidth average over a sliding window. When the average is ensured over a sliding window, the device should not care when the host decides to sample a 100 mSec for example, as the average will always be correct. By utilizing set percentage of predetermined allotment for the average bandwidth requirement, the system can give out credit on a predetermined interval. The credit is given out based on usage and once credit is depleted, data cannot be sent until more credit is accumulated. When data is not sent, the system is given a chance to accumulate credit to increase the amount of data sent. Once credit is at a level high enough to send data the device will send the data, but not at a speed that will surpass the average bandwidth requirement.

Enhanced Common Packet Radio Interface (eCPRI) based Fronthaul forms the foundation for open radio access network (O-RAN). O-RAN envisages splitting the radio into two parts, a Distributed Unit (DU) and Radio Units (RU), interconnected using high speed Fronthaul links. O-RAN and eCPRI for 5G / NR place demands for high speed Fronthaul with low latency, and high network bandwidth requirements. In the present disclosure, embodiments for configurable eCPRI Fronthaul solutions are disclosed. Various hardware accelerator implementations are presented for control plane and user plane traffic. The hardware accelerator implementation may support DU and RRU functionality required by eCPRI with minimal software intervention. The configurable eCPRI Fronthaul may support different data flows and meet different performance demands of DU and RRU. Scalable architecture may be applied for the configurable eCPRI Fronthaul to allow stacking of multiple hardware accelerators via a high-speed network interconnect, and overall performance and throughput may be improved.

This invention provides a satellite network topology management method and system based on feeder link switching. The method includes: constructing a continuously time-varying network topology model, and storing the availability sequence, available bandwidth sequence, and propagation delay of each link; responding to new service requests and obtaining the source satellite node and the target ground station; selecting the target feeder link and its effective connection period based on link status information; screening inter-satellite links that are continuously connected within the time period to form a candidate set, and calculating the average propagation delay and minimum available bandwidth of each link to construct a temporary topology; calculating the transmission path from the source satellite node through inter-satellite links and the target feeder link to the target ground station on the temporary topology; and locally updating the available bandwidth sequence of each link on the path according to the path and bandwidth requirements. This invention achieves efficient management of highly dynamic satellite-ground networks through feeder link event-driven and continuously time-varying modeling, improving service continuity and reducing management overhead.

Disclosed in the present application are a multi-tier user quantum key distribution network and distribution method based on multiple entangled photon sources. By means of introducing multiple entangled photon sources, bandwidth requirements can be effectively dispersed, such that a quantum-entanglement-based quantum secure communication network supporting multiple users becomes possible. During the deployment of second-tier photon sources, the problems of transmission loss and key rate reduction that are caused by excessively long distances between users in the same user group and a central entangled photon source can be effectively mitigated. Under a multi-user-tier framework, the pressure of the central photon source is further reduced, thereby providing the possibility of constructing an entanglement-based secure communication network having more users and a wider range.

The invention provides a vehicle-mounted passive optical network system and a communication method thereof, and the method comprises the steps: dividing a transmission period of a passive optical network into a plurality of fractional periods, each fractional period comprises a plurality of time slices used for transmitting different uplink data types, and each time slice comprises a first time slot and a second time slot; analyzing information which is carried in a received bandwidth allocation request from the optical network unit and is used for determining the service type, the priority and the bandwidth requirement of the uplink data to be sent; allocating first time slot resources in corresponding time slices to the non-delay sensitive data according to the priority from high to low; re-determining the priority of the time delay sensitive data, and allocating a second or first time slot resource in the corresponding time slice according to the new priority and the bandwidth demand; and finally, a scheduling instruction issued to the optical network unit is generated. According to the invention, the bandwidth time slot resources are reasonably allocated according to the delay sensitivity of the service data, the resource utilization rate of the system is improved, and the real-time performance and reliability of key real-time data transmission are ensured.

A system includes a system-on-chip containing a variety of agents configured to generate data transactions, a communication network configured to transfer transactions between two or more of the agents, a variety of network switches, and a bandwidth control circuit. The network switching circuits can be coupled to the agents and to the network. One of the network switches can be configured to estimate the bandwidth requirements for transactions to be sent through the network switch in an upcoming window.The bandwidth control circuit can be configured to limit network power consumption by determining a bandwidth budget using a network power budget for the upcoming time window and by generating a global bandwidth forecast using estimated bandwidth requirements received from the network switches. The bandwidth control circuit can also be configured to allocate the bandwidth budget among the network switches using the global bandwidth forecast.

A method performed by a user equipment (UE), the method comprises identifying, based on a set of connection parameters, a plurality of parallel connections associated with an application for downloading or uploading of one or more contents; determining whether a bandwidth requirement of a connection included in the identified plurality of parallel connections is greater than a bandwidth threshold or not; in accordance with a determination that the bandwidth requirement of the connection is greater than the bandwidth threshold: detecting per-connection-speed (PCS) of the connection, and assigning the connection to a first network interface or a second network interface based on the detected PCS of the connection; and in accordance with a determination that the bandwidth requirement of the connection is not greater than the bandwidth threshold, assigning the connection to the second network interface.

The application discloses a kind of photoelectricity collaborative resource allocation method and device based on spectrum state perception, after the method receives dynamic service request, IP layer service traffic is converted into optical layer frequency slot;K-SP algorithm is filtered K alternative paths, the idle frequency slot proportion of each path link, concentration and fragment matching degree are calculated, and then the spectrum efficiency adaptation degree is obtained, the path corresponding to the maximum value is selected as working path;From the remaining path, the alternative path that meets the reservation bandwidth requirement is filtered, and the optimal protection path is selected after calculating the failure rate;When working path meets spectrum constraint, resource is distributed, and when fault, it is switched to protection path and is connected transmission.The application optimizes path selection by spectrum state accurate perception, effectively reduces spectrum fragment, improves spectrum utilization, reduces service blocking rate, enhances network reliability and dynamic adaptation ability.

The application discloses a frequency diversity array time domain beam control method based on dynamic frequency offset and belongs to the field of microwave and radio frequency electronic technologies. The method comprises the following steps: obtaining a transmission time window and a target angle corresponding to a target beam pointing direction in the transmission time window; in the duration of the transmission time window, based on the target angle, dynamically determining a frequency offset increment between each array element in the frequency diversity array, wherein the frequency offset increment is in inverse proportional relationship with the value of an equivalent time parameter; based on the frequency offset increment, controlling each array element of the frequency diversity array to transmit a signal of a corresponding frequency, so that the synthesized beam continuously points to the target beam pointing direction in the transmission time window. Through dynamic phase compensation, the application offsets the phase drift caused by time accumulation; meanwhile, while reducing the bandwidth requirement, the application physically eliminates beam distortion by using frequency symmetric distribution.

The application relates to a resource scheduling method, system and device, computer equipment and a storage medium. The method comprises the following steps: a terminal determines a target edge node from a plurality of edge nodes, sends task data to be processed to the target edge node, so that the target edge node performs corresponding operations according to the task data, and receives the execution result sent by the target edge node. In the method, in the case that the local resources of the terminal are insufficient, a free edge node is determined, a task request is sent to the free edge node, so that the free edge node performs corresponding task processing. Since the communication distance between the edge node and the terminal is much smaller than the communication distance between the terminal and the cloud server, the communication bandwidth requirement is low and is not limited by the bandwidth requirement. The task data is processed by the edge node, the problem that the local resources of the terminal cannot be expanded is solved, and the real-time requirement of the terminal task is met.

This invention discloses a detection device and method for instantaneous broadband and phase-modulated light source signals, belonging to the field of laser signal processing. The detection device includes a polarization-maintaining transmission fiber, a waveguide-type amplitude modulator, a high-speed photodetector, and a signal frequency detector. The detection device provided by this invention features an all-fiber structure, resulting in efficient and accurate detection. It simplifies the performance requirements for the signal generator and facilitates demodulation of the frequency-interval periodic signal carried by the phase-modulated pulse, exhibiting high overall reliability. Furthermore, it can beat the signals of the two branches simultaneously, reducing the bandwidth requirements of the photodetector and avoiding integration of the time-domain signal. This allows for direct differentiation of whether the injected signal is broadband or single-frequency in a specific time slice using ordinary photodetector methods. The invention also provides a calculation process and judgment criteria for analyzing and identifying light source signals. After obtaining the modulation parameters of the injected light source signal, it can automatically and quickly determine whether the signal is an instantaneous broadband light source signal or a phase-modulated light source signal, achieving automatic analysis and judgment of the signal category throughout the entire process.

The invention discloses a proportional fair scheduling method based on a block chain. The method comprises the steps that a user and an operator complete identity authentication and registration through a registration contract; a user periodically uploads channel state information and bandwidth requirements through a state reporting contract; the scheduling contract calculates the scheduling priority of each user according to a proportional fairness principle, determines a to-be-scheduled user for each operator, and completes the updating of the historical throughput of the user; and the settlement contract generates a bill according to the scheduling result and carries out chaining for evidence storage. The invention further discloses a cross-network joint scheduling performance evaluation method in the multi-operator collaborative environment, and a mathematical characterization model of the long-term average throughput of the user and the network utility is constructed. According to the method, automatic scheduling is realized by using the intelligent contract, and the scheduling operation is recorded on the chain in a tampering-free manner, so that the whole scheduling process is open, transparent, safe and credible, cross-network resource aggregation and cooperative scheduling in a multi-operator environment are realized, and the utilization efficiency of spectrum resources and the overall performance of the network are effectively improved.