125 results about "Dynamic bandwidth allocation" patented technology

The invention discloses an unmanned aerial vehicle inspection method and system based on AI visual control, and belongs to the technical field of unmanned aerial vehicle automatic control, and the method comprises the steps: carrying out the feature component extraction and compression according to discontinuous frame image data collected by an airborne camera and preset inertial navigation data, and obtaining a compressed feature flow; performing multi-mode obstacle safety level parameter analysis, generating an obstacle avoidance decision priority map, constructing a safety corridor, and generating a real-time self-correction route; semantic analysis is carried out on the deviation between the real-time flight trajectory and the real-time self-correction route, and target area abnormal mark data is generated; and dynamically adjusting the bandwidth allocation of the dual-channel communication network, and transmitting the abnormal mark data of the target area to a ground control terminal. According to the method, a non-continuous frame image and inertial navigation fusion modeling mechanism is adopted, and a multi-mode obstacle safety grading and double-channel dynamic bandwidth allocation strategy is combined, so that real-time response of dynamic obstacle avoidance, accurate judgment of anomaly detection and efficient transmission of key data can be realized.

The invention relates to the technical field of electric power system communication, in particular to a dynamic bandwidth allocation method and system for an electric power communication network, and the method comprises the steps: constructing a service traffic characteristic database, dividing service types, defining indexes such as a bandwidth threshold value, and predicting traffic fluctuation by adopting an LSTM-GARCH hybrid neural network; parameters such as a link bandwidth occupancy rate are obtained in real time, and a network state matrix is constructed; based on the prediction model and the network state, generating a bandwidth allocation scheme through a deep reinforcement learning algorithm optimized by a near-end strategy; a software-defined network controller is used to execute a strategy, and a gradient descent method is combined to optimize parameters to form a closed loop. By dynamically adapting the service flow and the network state, the bandwidth utilization rate is improved, the key service transmission quality is guaranteed, and efficient and stable operation of the electric power communication network is achieved.

The invention discloses a smart campus converged communication system and an information interaction method thereof, and relates to the technical field of campus communication. The system comprises a terminal access module, a protocol conversion module, a hierarchical transmission module and a cross-modal interaction module. The terminal access module acquires a terminal data stream in real time by using a multi-protocol adapter; the protocol conversion module performs protocol decoupling and standardized packaging on the data flow by using a QoS bandwidth prediction model, and generates a bandwidth allocation scheme according to a dynamic bandwidth allocation algorithm in combination with a network topology state matrix; the hierarchical transmission module extracts service information data by using a data semantic analysis model, calculates Shannon entropy and constructs a transmission queue mapping table; and the cross-modal interaction module generates an interaction protocol stack adaptive to the service by using a multi-modal feature collaborative extraction mechanism and an attention weight fusion mechanism based on the transmission queue mapping table.

The invention relates to a video acquisition and transmission method and device for converting a 10-gigabit network into a PCIe (Peripheral Component Interconnect Express) interface. The method comprises the following steps: receiving a video stream through a double 10-gigabit network optical module, carrying out protocol analysis and preprocessing through an FPGA (Field Programmable Gate Array), realizing multi-path alternate reading and writing by utilizing DDR3 ping-pong cache, dynamically distributing the video stream to multiple devices through a three-path PCIe 3.0 * 4 interface and an XDMA (Extensible Direct Memory Access), and optimizing the transmission priority in combination with a load state. The device comprises two paths of SFP + optical modules, a Xilinx Virtex7 series FPGA chip (integrated with a 10-gigabit network MAC, a PCIe XDMA IP core and a DDR3 controller), three paths of PCIe 3.0 * 4 interfaces and an external DDR3 memory. The system has the advantages that the double 10-gigabit network input and multi-PCIe channel collaborative architecture breaks through the single-channel bandwidth bottleneck; the intelligent ping-pong cache and the AXI arbitration strategy reduce the data conflict risk; and dynamic bandwidth allocation optimizes real-time performance.

The invention discloses a bandwidth dynamic allocation method and device, a program product and a storage medium, and relates to the technical field of computers. According to the method, bandwidth use data of a network outlet are collected in real time, the residual bandwidth capacity of the outlet is determined, and the distributable dynamic bandwidth capacity of each interface is calculated by combining an interface weight parameter and an interface stability coefficient calculated based on bandwidth use fluctuation characteristics, so that the residual bandwidth of the network outlet can be reasonably distributed. Meanwhile, a dynamic additional bandwidth mechanism is introduced outside the fixed basic bandwidth, and the dynamic bandwidth allocation weight is determined based on the bandwidth use stability of the authentication terminal and the current bandwidth use state, so that the terminal is not limited by a preset fixed bandwidth upper limit any more, more bandwidth resources can be obtained when the exit bandwidth is sufficient, and the bandwidth utilization rate of the terminal is improved. Therefore, the utilization efficiency of bandwidth resources is improved.

The invention discloses a vehicle-mounted video transmission hybrid topology network, and relates to the technical field of vehicle-mounted video communication. The vehicle-mounted video transmission hybrid topology network comprises a plurality of transmission nodes, each transmission node comprises at least one input port and at least one output port, and the plurality of transmission nodes form a hybrid network of a tree topology structure and a daisy chain topology structure; wherein the tree topology structure in the hybrid network comprises a root node and a plurality of subordinate sub-nodes, the daisy chain topology structure is a sub-branch of the tree topology structure, and the hybrid network comprises a main link and a standby link which are used for signal transmission. Through innovative designs such as hybrid topology, dynamic bandwidth allocation, data retransmission, redundant channels, routing address query and the like, high bandwidth, low delay and high reliability in the field of vehicle-mounted video transmission are realized.

The invention provides a system and a method for automatically identifying OCP network card bandwidth. According to the system for automatically identifying the bandwidth of the OCP network card, dynamic bandwidth allocation is achieved through cooperation of the multiple computing nodes, the CPLD and the OCP network card, each computing node is connected with a connector on the side of the OCP network card through a certain x8 MCIO connector in a set of x8 MCIO connectors, each computing node distinguishes the node identity through differential voltage configuration of a reserved detection pin, and therefore the bandwidth of the OCP network card can be automatically identified. And the CPLD acquires node identity detection signals to judge an access mode, determines a bandwidth allocation strategy by combining with the slot in-place detection signal group, generates a bandwidth configuration control signal group according to the bandwidth allocation strategy, and feeds back the bandwidth configuration control signal group to the OCP network card. According to the system, the OCP network card bandwidth identification and distribution are carried out by using hardware, and the application of OCP network cards with different bandwidths in various access modes can be dealt with only through a CPLD (Complex Programmable Logic Device) under the condition that firmware of each hardware is not frequently replaced.

The invention discloses a multi-task parallel data stream processing method and device based on an FPGA (Field Programmable Gate Array), which are applied to the technical field of data processing. Carrying out normalization processing on the decoded data to generate a data stream in a unified format; performing coding and ID identification code embedding processing on the normalized data to generate to-be-stored data with an identifier; carrying out FIFO (First In First Out) buffering and write-in priority judgment on the coded data to generate priority queue data; dDR writing and BANK scheduling processing are carried out on the priority queue data, and stably stored parallel data are generated; carrying out reading and output coordination processing on DDR storage data to generate a continuous output data stream, and triggering a reading application by decoding ID identification code positioning data, reading FIFO according to depth scheduling and monitoring data volume by channel temporary storage FIFO; and performing dynamic bandwidth allocation and energy efficiency optimization on the whole data stream processing process to generate an efficient parallel processing result.

The invention discloses a data transmission method of a vehicle-mounted controller, relates to the technical field of data transmission, and effectively relieves the transmission conflict between OTA upgrade and a real-time control instruction through a multi-dimensional cooperation mechanism. A dynamic bandwidth allocation mechanism based on a vehicle running state breaks through a traditional fixed resource reservation mode, and precise adaptation of channel resources and safety requirements is achieved; performing semantic-level criticality analysis to deeply analyze the underlying logic association of the instruction, and constructing dynamic priority mapping; the fragment recombination and redundancy transmission technology significantly reduces the influence of upgrade interruption on the system, and ensures reliable delivery of key instructions; and the compensation transmission mechanism balances the timely recovery of the security instruction and the transmission efficiency of the non-critical data through a differential strategy.

The invention relates to the technical field of microwave communication, and discloses a microwave communication radio frequency front-end transceiver chip and a dynamic bandwidth allocation method and system. The system comprises a radio frequency front-end transceiver chip; the control module is electrically connected with the radio frequency front-end transceiver chip and is configured to receive the digital signal sent by the analog-to-digital conversion module so as to extract signal characteristic parameters, and the signal characteristic parameters comprise a signal-to-noise ratio, a multipath fading coefficient and a target scene communication protocol parameter; determining an initial bandwidth allocation strategy and a power control threshold according to the target scene communication protocol parameters; based on the signal-to-noise ratio and the multipath fading coefficient, the working frequency band and the passband width of the multi-frequency-band filter bank are dynamically adjusted through an adaptive particle swarm optimization algorithm, and a gain control signal of the power amplification module is generated, so that the transmitting power is minimized on the premise of meeting the communication distance requirement, and dynamic bandwidth allocation is completed. And the performance and the adaptability of microwave communication in a complex scene are remarkably improved.

The invention discloses a high-definition video docking station device, an integrated system and a communication method. The device comprises a main control module, a protocol conversion module, a power management module, a video processing module, a dynamic bandwidth allocation unit, a plurality of video output interfaces and a peripheral expansion unit. The main control module receives an input video signal and performs shunting, compression and protocol analysis; the protocol conversion module manages interface protocol switching, equipment detection and power supply negotiation; the power management module converts input voltage into multi-stage system voltage and provides a reverse charging function; the video processing module is used for splitting an input video signal into multiple paths of independent video streams and reducing the bandwidth; the dynamic bandwidth allocation unit is used for dynamically adjusting the resolution or refresh rate of the video stream; and the peripheral expansion unit is connected with the low-speed peripheral through the independent data channel. The device supports three paths of 4K and 60Hz synchronous output, has high energy efficiency, intelligent bandwidth management and good compatibility, and is suitable for multi-screen cooperation, industrial control and high-resolution display application scenes.

This invention discloses a method and apparatus for processing multi-task parallel data streams based on FPGA, applied in the field of data processing technology. The invention constructs a multi-format raw data receiving and decoding system; normalizes the decoded data to generate a unified format data stream; encodes and embeds ID identification codes into the normalized data to generate tagged data to be stored; performs FIFO buffering and write priority determination on the encoded data to generate a priority queue data; performs DDR write and BANK scheduling on the priority queue data to generate stable parallel data; and coordinates the reading and output of the DDR stored data to generate a continuous output data stream. Specifically, data is located by decoding the ID identification code, reads from the FIFO by depth scheduling, and the channel temporary storage FIFO monitors the data volume to trigger read requests. Dynamic bandwidth allocation and energy efficiency optimization are performed throughout the data stream processing process to generate efficient parallel processing results.

The invention discloses a medical CT (Computed Tomography) communication method for high-precision synchronization of multi-source data and a CT system. Wherein the rotary control unit and the fixed control unit are connected with each other through a private wireless link, take an FPGA / MCU platform as a core, and realize microsecond-level synchronization by utilizing a unified clock source, a hardware timestamp and round-trip delay correction; during scanning, the fixing unit returns multi-source data such as bed codes, electrocardio and high-voltage parameters in real time, and the rotating unit fits and triggers instantaneous bed information based on cached data and sends the instantaneous bed information to the image reconstruction unit after the instantaneous bed information is strictly aligned with detector data. According to the scheme, traditional high-voltage cables and drag chains are replaced, hidden dangers of insulation aging, mechanical abrasion and data interruption are eliminated, and the fault rate is remarkably reduced; meanwhile, motion artifacts are inhibited, and the image definition and real-time performance are improved. Protocol multiplexing and dynamic bandwidth allocation further reduce delay and bit error rate, and support seamless expansion of subsequent modules.

Systems and methods for dynamic bandwidth allocation and jitter handling in multi-tiered satellite networks such as virtual communication networks and / or physical communication networks. The system includes bandwidth distributing (BD) unit, in-route group managers (IGMs), in-route bandwidth manager (IBM). The system functions in multi-tier network entity management mode, and multi-beam management mode. The system operates by periodically collecting bandwidth reports from IGMs. The BD unit analyzes data in report and compares aggregated bandwidth demand with pre-defined thresholds. If thresholds are exceeded, system switches to multi-tier network entity management mode. In this mode, BD unit determines individual bandwidth adjustments for virtual network and beams and allocates bandwidth for individual devices within virtual network. Further, BD unit transmits this information to IBM, which applies allocations, and receives and transmits a scaling factor back to IGM indicating utilization of allocated bandwidth. Further, BD unit switches back to multi-beam management mode based on comparison result.

The invention discloses a bridge state monitoring method and system based on edge cloud collaboration, and relates to the technical field of bridge safety, and the method comprises the steps: collecting real-time multi-source heterogeneous data; screening to obtain effective multi-source heterogeneous data; performing feature extraction and damage sensitivity index calculation on the effective multi-source heterogeneous data through a damage sensitivity index formula; transmitting the data to a cloud server through dynamic bandwidth allocation; constructing a bridge state evaluation model in the cloud server; obtaining a bridge overall state score according to the bridge state evaluation model; predicting the remaining service life and risk level of the bridge according to the overall state score of the bridge; and performing multi-level notification and alarm on a management platform, a supervision mechanism and a bridge site according to the risk level. According to the method, transmission delay and bandwidth occupation are effectively reduced through edge cloud collaboration and grading processing. And a multi-scale feature fusion model and a special calculation formula are adopted to realize accurate evaluation of the bridge state and reliable prediction of the residual life. And full-process linkage is realized through a closed-loop early warning mechanism.

The invention relates to the technical field of photoetching machine data transmission, and discloses an ultra-high-speed distributed data transmission synchronization system of a direct-writing photoetching machine. The system comprises a dynamic exposure pulse analysis module which constructs a distributed transmission delay calculation model based on historical operation data, collects data such as a laser trigger pulse sequence in real time and outputs a theoretical transmission synchronization value; the multi-channel time sequence offset detection module generates a node-level multi-channel time sequence offset matrix through multi-dimensional comparison of the theoretical value and the actual transmission time sequence; the spatial topology mapping module is combined with the physical position and the link impedance parameter to generate a time sequence abnormal propagation path probability distribution cloud picture so as to locate a high-delay area; and the dynamic bandwidth allocation module configures a transmission strategy according to the data, starts redundant channel parallel transmission for a high-delay area, and implements dynamic clock offset compensation for adjacent nodes, so that the synchronization stability and transmission efficiency of data transmission are effectively improved.

The invention relates to the technical field of intelligent automobile electronic control, and discloses a vehicle-mounted network controller refreshing system and method.The vehicle-mounted network controller refreshing system comprises a data flow classification and priority calibration module, a function key score calculation module and a function key score calculation module, discrete priorities P0 to P3 are generated through weighted mapping, and corresponding delay upper limits are marked; and the flow prediction and dynamic bandwidth allocation module is used for receiving the output priority label and the delay upper limit and smoothly predicting the bandwidth demand of the next period according to an index. According to the method, the technical scheme of weighted mapping of the timeliness score and the function criticality score is adopted, so that the technical effects of dynamically dividing the P0-P3 priorities based on the flow characteristics and binding the delay upper limit are achieved, and compared with the technical scheme of manually presetting the fixed priority or simply polling and scheduling in the prior art, the method has the advantages that the practicability is high; the defects that emergency data streams and common data streams cannot be distinguished in a self-adaptive mode, and delay constraints and bandwidth requirements are disjointed are overcome.

The invention provides a dynamic bandwidth allocation method and device and a medium, and relates to the technical field of networks. The method comprises the following steps: acquiring an equipment access duration attenuation factor which is attenuated to a first value along with the network access duration of equipment; acquiring a current time delay sensitivity factor and a message characteristic factor of the equipment according to the service currently operated by the equipment; acquiring predicted traffic of the equipment in a first preset duration from current to future according to the service currently operated by the equipment; and distributing the current network bandwidth for the equipment according to the equipment access duration attenuation factor, the time delay sensitivity factor, the message characteristic factor and the predicted flow. According to the method and the device, the access duration attenuation factor, the delay sensitivity factor, the message characteristic factor and the predicted flow of the equipment are acquired to serve as the basis for dynamically allocating the bandwidth for the equipment, so that the bandwidth allocation is dynamically optimized.

The embodiment of the invention provides an FTTR dynamic bandwidth allocation method and system based on master-slave gateway collaboration, and belongs to the technical field of communication. The method comprises the following steps: counting bandwidth demand information from a gateway; generating flow bandwidth request information according to the bandwidth demand information and sending the flow bandwidth request information to the main gateway; the master gateway receives the traffic bandwidth request information and makes a decision, determines the bandwidth allocation information of the slave gateway and informs the slave gateway of a decision result; and the slave gateway receives the decision result and performs data transmission according to the bandwidth allocation information of the slave gateway. The slave gateway counts the bandwidth demand information and requests the corresponding bandwidth from the master gateway according to the bandwidth demand information, the master gateway confirms the traffic bandwidth request information after receiving the traffic bandwidth request information, and the master gateway and the slave gateway cooperatively perform dynamic bandwidth allocation, so that bandwidth waste caused by static allocation of the master gateway can be avoided, and the bandwidth allocation efficiency is improved. And the real-time distribution according to the requirement is realized, and the bandwidth service is better provided for the slave gateway.

The invention relates to a ship mail adaptive coding and dynamic bandwidth allocation method, belongs to mobile voice service, mobile data communication service and other telecommunication services, and particularly relates to the field of digital information transmission. The method comprises the following steps: intelligently predicting the total number of transmitted mails and the total number of transmitted mail data of a target ship in a current time segment by using an AI network data prediction model according to various basic data which are fully and comprehensively selected; and determining an adaptive coding strategy and a dynamic bandwidth allocation strategy for the current time segment of the target ship based on the intelligent prediction result. According to the invention, in order to solve the technical problems that effective and smooth transmission of all mail data of each future time segment of each ship is difficult to consider and the utilization rate of network transmission resources is difficult to improve, A I network data prediction models of different structures customized and designed for different ships are used; and intelligent prediction of the mail transmission state of each ship in the future time segment is completed, so that the technical problem is solved.

The invention relates to the technical field of network communication, in particular to a multi-terminal dynamic bandwidth allocation control method and system for real-time flow monitoring. The method comprises the following steps: acquiring a terminal connection state, performing data transmission monitoring, identifying a target terminal according to a monitoring result, and outputting target terminal data; respectively carrying out service importance grading and user identity setting, predicting a broadband demand, and dynamically adjusting the broadband allocation priority of a target terminal; according to the broadband distribution priority of the target terminal, broadband distribution is carried out on current use of the target terminal; the system comprises a target terminal acquisition module, a priority dynamic adjustment module and a broadband distribution module. By identifying the target terminal data and dynamically adjusting the broadband allocation priority of the target terminal, broadband allocation is carried out, the bandwidth utilization rate is improved, the transmission quality of services with different priorities is guaranteed, and therefore the diversified service requirements in the modern network environment are met.

The invention relates to the technical field of visible light communication, and discloses an intelligent lamp data transmission system based on visible light communication. The system comprises an optical signal processing module, a transmission management module and a terminal control module. The optical signal processing module collects and processes the visible light signal and outputs a light intensity space coding signal; after the transmission management module receives the signal, the signal is decoded by the signal analysis unit to obtain an original data stream signal and a channel interference characteristic signal, the channel optimization unit processes the original data stream signal and the channel interference characteristic signal to obtain an optimal modulation parameter signal, and the transmission strategy unit outputs a dynamic bandwidth allocation signal; in the terminal control module, an adaptive modulation execution unit adjusts the driving parameters of the light emitter according to the optimal modulation parameter signal, a lamp array control unit adjusts the working state of a lamp light-emitting unit and collects a real-time link state signal, and a link monitoring module outputs a communication quality index. The system is suitable for an intelligent illumination and data transmission fusion scene.

The invention relates to the technical field of audio processing, and discloses a wireless earphone multi-device cooperation method and system based on spatial audio rendering, and the method comprises the steps: extracting the multi-dimensional cooperation features of a wireless earphone, and generating a spatial audio rendering control instruction and a multi-device connection switching instruction; setting a cooperative control strategy set of a spatial audio rendering control instruction and a multi-device connection switching instruction in combination with the scene type, the visual focus coordinate and the noise interference index; calculating a sound field distortion value of the spatial audio rendering control instruction, and determining a dynamic bandwidth allocation value of an equipment audio priority; setting a multi-device audio output threshold of the wireless earphone through the dynamic bandwidth allocation value and the noise reduction intensity adjustment coefficient; and generating a multi-device audio switching scheme of the wireless earphone based on the cooperative control strategy set and the multi-device audio output threshold. The fracture risk of the space sound field in the switching process can be reduced, and the auditory experience of a user is improved.

A novel dynamic bandwidth allocation system integrates an intelligent traffic prediction module and an on-demand token replenishment module in a quality-of-service (QoS)-based media access control (MAC) layer controller, which is able to dynamically allocate data transmission capacity (i.e., bandwidth) to multiple incoming service flows of data packets for multiple subscribers more efficiently with less network congestions and service inconsistencies than conventional MAC layer management methods. The novel dynamic bandwidth allocation system utilizes network traffic predictions to identify potentially sudden or rapid changes in near-term network traffic, and if necessary, adjusts bandwidth allocations preemptively to service flows to minimize service quality degradations while also improving network resource usage efficiencies, compared to conventional static bandwidth allocation methods. The novel dynamic bandwidth allocation system also minimizes unnecessary packet droppages, network congestions, and / or speed degradations during bursty and oscillating network traffic, and improves QoS satisfaction rates for network subscribers.

The invention discloses a dynamic bandwidth allocation method and device used in an FTTR or OLT scene, and the method comprises the steps: receiving a bandwidth configuration parameter issued by a CPU, and receiving a bandwidth state parameter from an uplink PON MAC module in parallel; determining the bandwidth demand estimation value of each AllocID in the sub-allocation period, and initializing the residual available bandwidth in the sub-allocation period; and in the sub-allocation period, on the basis of the bandwidth demand estimation value of each AllocID, bandwidth allocation of all AllocIDs of each PON port and construction and issuing of BWMAP bandwidth authorization are completed in sequence according to the following mode: when it is determined that the current remaining available bandwidth is enough, bandwidth allocation is performed on the AllocID of the current PON port, BWMAP bandwidth authorization is constructed and issued, and the current remaining available bandwidth is updated. Therefore, the problem that an existing uplink time slot transmission bandwidth allocation mode cannot meet low-cost, low-delay and high-reliability user requirements is solved.

The invention relates to the technical field of bandwidth allocation, and provides a dynamic bandwidth allocation method and device for a home intranet, equipment, a medium and a product, and the method comprises the steps: obtaining the real-time flow of the home intranet through routing; when the real-time flow reaches a preset flow threshold value, triggering a broadband adjustment strategy; in response to the broadband adjustment strategy, performing first bandwidth adjustment according to the task type of the lower-mounted device to obtain a first adjustment result; inputting the first adjustment result into a user traffic use habit model for second bandwidth adjustment to obtain a second adjustment result; generating a bandwidth allocation adjustment command according to the second adjustment result; and sending the adjustment command to the route to enable the route to carry out bandwidth allocation and flow control on the lower equipment. According to the invention, the gateway manages the information of the under-hanging terminals among the routes as a whole, so that the information sharing among the routes is enhanced; and in combination with a two-stage bandwidth adjustment strategy, dynamic bandwidth allocation under the complex family topology is realized, and the adjustment accuracy is improved.

The invention discloses a user traffic distribution management method and system for a traffic pool, and relates to the field of traffic distribution management, and the main scheme is as follows: generating a process number according to order data; calculating a process priority weight through the process characteristic parameters; calculating a channel quality attenuation factor and a distribution bandwidth through the network performance parameters; calculating a load index value of the equipment by acquiring the equipment state parameters; carrying out comprehensive analysis through the parameters to obtain a dynamic bandwidth allocation quantity; the total bandwidth of the flow pool is allocated according to the dynamic bandwidth allocation quantity; judging whether to execute a shunting evaluation instruction or not through an equipment state parameter load balancing evaluation threshold value; calculating a distribution benefit evaluation value according to the distribution benefit data; and comparing the distribution benefit evaluation value with the distribution benefit evaluation threshold value, and judging whether to execute the distribution instruction, thereby solving the problems that the order data is not associated with the production equipment, so that the resource distribution is extensive, and the flow distribution management is lack of flexibility and dynamic adaptability.

The invention belongs to the technical field of digital twinning, and particularly discloses a digital twinning data transmission optimization method and system and a program product, which realize real-time intelligent adjustment of data transmission priority and improve transmission efficiency by constructing a dynamic priority algorithm based on multi-dimensional data characteristics. The accuracy of digital twin data transmission is ensured through a dual guarantee mechanism of data integrity verification and time sequence verification; dynamic balance of transmission efficiency and accuracy is realized by combining bandwidth dynamic allocation and an intelligent retransmission strategy, and the method has extremely high industrial universality; and through dynamic bandwidth allocation and an intelligent compression strategy, the utilization rate of the network bandwidth is remarkably improved, and the data transmission cost of an enterprise is greatly reduced. The industrial problems of low data transmission efficiency and poor accuracy between the physical entity and the digital twinborn body can be effectively solved, and key support is provided for deep application of the digital twinborn technology.

A novel dynamic bandwidth allocation system and a method of its operation incorporate a quality-of-service (QOS)-based media access control (MAC) layer controller, which is able to dynamically allocate data transmission capacity (i.e. bandwidth) to multiple incoming service flows of data packets for multiple subscribers more efficiently with less network congestions and service inconsistencies than conventional MAC layer management methods. The QoS-based MAC layer controller is able to determine and place incoming service flows into two separate states of token buckets (i.e. conforming or non-conforming), wherein the conforming token bucket utilizes a longer filtering interval (e.g. 1 second) and the non-conforming token bucket utilizes a shorter filtering interval (e.g. 1 ms) for detecting token bucket violations. The QoS-based MAC layer controller is able to utilize either conforming or non-conforming states flexibly and intelligently to minimize unnecessary packet droppages, network congestions, or speed degradations during bursty and oscillating network traffic.

Communication systems and methods using a hybrid-switch dynamic bandwidth allocation (DBA) are provided. A predetermined switch threshold is calculated for each data subcarrier of a downstream optical signal. The downstream optical signal is transmitted by an optical line terminal (OLT) to a plurality of optical network units (ONUs) disposed remotely from the OLT. A status report is received from each ONU of the plurality of ONUs and a current load is calculated for each data subcarrier of the one or more data subcarriers based on the status report from each ONU. The current load is determined to meet or not meet the predetermined switch threshold. A first DBA algorithm is selected when the current load does not meet the predetermined switch threshold and a second DBA algorithm is selected when the current load meets the predetermined switch threshold. The selected DBA algorithm is then executed.