83 results about "Rate adaptation" patented technology

The invention discloses a video data transmission method and system based on an FPGA, and relates to data transmission. The method comprises the steps that a video data stream is acquired, and a time sequence signal of the video data stream is analyzed; writing the parallel data into an external memory to form a frame buffer area; packaging the read video data into a data packet meeting a USB3.2 transmission protocol; packaging the data packet based on a USB3.2 link layer protocol; and converting the USB3.2 protocol transmission frame into a differential signal, and transmitting video data in the USB3.2 protocol transmission frame according to the differential signal. In view of data loss caused by mismatching of a video input rate and a USB output rate in the prior art, by establishing an annular buffer structure and adopting a dynamic pointer management and waterline threshold monitoring mechanism, rate adaptive matching of a video data stream is realized, and continuous and stable transmission of video data is ensured.

The invention provides a dual-CAN channel fusion J1939 protocol stack of a vehicle-mounted terminal and a parallel communication diagnosis method, and aims to solve the problems that an existing dual-CAN channel terminal lacks a protocol layer parallel processing mechanism and an intelligent routing strategy, communication and diagnosis conflicts still exist, and a J1939 protocol is insufficient in adaptation and poor in baud rate adaptation flexibility. The method comprises the following steps: S1, constructing a dual-CAN FD channel and dynamic baud rate adaptive detection mechanism, and providing a link basis for service isolation; s2, integrating J1939 and UDSonCAN dual protocol stacks based on dual CAN FD channels, and establishing data mapping to realize data collaboration between protocols; s3, designing an intelligent message routing and channel flow monitoring mechanism, and ensuring conflict-free parallel transmission of communication and diagnosis services; and S4, newly adding J1939 network management, configuration parameter persistence and firmware online upgrading functions, and improving the maintainability of the terminal. According to the invention, the advantages of dual-CAN channel hardware are fully exerted, efficient cooperation of communication and diagnosis and protocol deep compatibility are realized, and the compatibility, flexibility and stability of the terminal are greatly improved.

The invention belongs to the technical field of computer vision and neuromorphic computing. The invention provides a multi-scale dynamic fusion target detection method and system based on a spiking neural network. According to the embodiment of the invention, the network adopts a trainable integer LIF neuron, the SABC module adopts a dynamic channel expansion mechanism, the problem of deep feature degradation caused by pulse signal time sequence sparsity is effectively solved, the SMGFDH realizes multi-scale feature fusion of pulse distribution rate self-adaption through a differential attention mechanism, and the accuracy of the feature fusion is improved. And redundant convolution operation before traditional splicing is innovatively canceled, and an efficient detection framework completely adaptive to pulse sparsity is constructed. The problems of insufficient deep feature expression and low multi-scale fusion efficiency of the existing SNN in a complex visual task are solved.

The invention provides a method for achieving CAN bus baud rate self-adaption, and belongs to the technical field of CAN bus communication. The method comprises the steps that S1, an MCU chip controls a CAN controller to send a test message according to a preset baud rate; s2, if it is determined that the Baud rate for sending the test message is not matched with the Baud rate of the CAN bus, the preset Baud rate is changed, and the step S1 is executed again; and if the Baud rate for sending the test message is determined to be matched with the Baud rate of the CAN bus, the Baud rate matching is successful, and the process is ended. According to the method, network baud rate self-adaption is achieved for the CAN network newly-added nodes in a message sending or receiving mode, the adaptive network baud rate has the advantages of being high in recognition rate, stable, reliable, high in speed, simple, easy to achieve and the like, the baud rate setting problem of the newly-added nodes when the CAN network baud rate is unknown can be effectively solved, and the CAN network baud rate setting efficiency is improved. And the flexibility of CAN network communication is improved to a certain extent.

Methods and systems are described for performing multi-lane alignment and rate adaptation between tiles (1304, 1302) in a multi¬file package (1300), specifically exchanging alignment information (algn_found, rpcs_algn_ctl) across clock domains for different tiles (1304, 1302) based on a write tile clock (wr_tile_clk) generated from a local system clock (tx_clk) in a leader tile (1302), the write tile clock (wr_tile_clock) having a period equal to a common reference clock (refclk), the write tile clock (wr_tile_clock) corresponding to a pulse having a location within the period of the common reference clock (refclk) as determined by an active cycle of a counter.

The application discloses a modulation and coding adaptive selection method for a mobile ad hoc network based on separation of a control plane and a data plane. In the mobile ad hoc network based on separation of the control plane and the data plane, a carrier sense multiple access (CSMA) mechanism is adopted in a control time slot to compete for sending fused situation information of itself, so as to complete survey and perception of neighbor nodes. The situation information includes link transmission quality and node queue length. In the data plane, the CSMA mechanism is also adopted, but the situation information of the control plane needs to be utilized to form certain 'network order', so as to reduce the decline of throughput caused by error packets and collision. On the basis of a traditional rate adaptive algorithm based on a signal-to-noise ratio (SNR), the algorithm is improved and applied to a mobile ad hoc network device based on separation of the control plane and the data plane.

A wireless terminal of a telecommunications system comprises wireless terminal processor circuitry and wireless terminal interface circuitry. The wireless terminal processor circuitry is configured to generate a rate adaptation eligibility message to indicate whether a resource of the wireless terminal is eligible for codec rate adaptation. The wireless terminal interface circuitry is configured to transmit the rate adaptation eligibility message across a radio interface to a network node.

This disclosure provides systems, methods, and devices for Electronic Shelf Label (ESL) systems that support beaconing rate adaptation, such as for target device positioning in an ESL network environment. Beaconing rate adaptation may provide for increasing, decreasing, or otherwise adapting the transmission rate of one or more beacons transmitted by one or more devices operating within a wireless communication coverage area of a wireless network. Adapting a beaconing rate may utilize one or more beaconing rate criteria, such as may be determined based on, as a function of, or otherwise using various information regarding a target device. Other aspects and features are also claimed and described.

The embodiments of the present application provide a communication baud rate adaptation method. The method comprises: a receiving end can receive a communication negotiation signal sent by a sending end on the basis of a first baud rate; the receiving end can determine a first duration on the basis of a duration of a start signal comprised in the communication negotiation signal, and determine a second duration on the basis of a duration of a stop signal comprised in the communication negotiation signal; and the receiving end determines a second baud rate on the basis of one or both of the first duration and the second duration, the second baud rate being used for receiving the signal of the sending end.

The invention relates to a code rate self-adaption method and device, computer equipment and a storage medium. The method comprises the following steps: aiming at a current suggested code rate output by a code rate prediction model, introducing a gating mechanism based on a buffer threshold, intercepting an unreasonable current suggested code rate so as to determine a target code rate conforming to a physical common sense, and carrying out code rate self-adaption according to the target code rate so as to obtain an adaptive code rate. Therefore, the jamming risk caused by the fact that the current suggested code rate output by the model is directly used for code rate switching is avoided.

The application provides a kind of multi-rate adaptive compatible coherent demodulation method and device, belong to coherent demodulation technical field;The method comprises: the pre-treatment of coherent light signal;Adopt the double-stage mechanism of coarse identification and fine identification combination to automatically identify the rate and modulation format of signal, wherein fine identification utilizes lightweight CNN classifier;According to the recognition result, adaptively configure the core demodulation parameters such as sampling rate, equalizer order, operation bit width and carrier recovery algorithm;Through the unified configurable modular architecture, complete synchronization, equalization, carrier recovery and other demodulation processing;Soft decision is made to demodulated signal and real-time monitoring performance index;According to the monitoring result, closed-loop dynamic fine tuning is carried out on demodulation parameter;The application realizes the automatic identification and compatible demodulation of 100G / 200G / 400G and PM-QPSK / PM-16QAM signal, and is suitable for general coherent acquisition platform, intelligent optical network receiver and multi-rate optical communication tester.

This electronic device comprises one or more processors comprising processing circuitry and a memory storing instructions. The instructions, when executed individually or collectively by the one or more processors, cause the electronic device to perform the operations of: transmitting a plurality of uplink data packets encoded by a codec on the basis of a first bit rate, during a first time duration; identify the number of first retransmission uplink data packets having a first retransmission count, which is greater than or equal to a first retransmission threshold value, from among the plurality of first uplink data packets; and adjust a bit rate of the codec from the first bit rate to a second bit rate, on the basis of the number of first retransmission uplink data packets.

The invention relates to the technical field of mine safety monitoring, in particular to a heterogeneous baud rate adaptive communication method for mine safety monitoring, which comprises the following steps: a monitoring substation sends a baud rate synchronization frame to all slave devices; the slave device receiving the Baud rate synchronization frame performs Baud rate switching according to the Baud rate synchronization frame; the monitoring substation sends inspection commands to all the slave devices according to the device cache table, if the slave devices receive the inspection commands, feedback signals are generated and sent to the monitoring substation, and the monitoring substation classifies all the slave devices according to the feedback signals and the device cache table; all the slave devices are divided into A and B types of slave devices; storing the slave devices A and B in an initial baud rate device list; and the monitoring substation performs baud rate self-adaption on the A-type slave devices under a plurality of communication baud rates, determines the optimal baud rate of each slave device, and moves from the initial baud rate device list to the corresponding optimal baud rate device list. The Baud rate can be independently and dynamically adjusted according to the actual communication condition of the equipment.

The invention discloses a high-speed data real-time acquisition system based on edge data and a Kafka transmission framework, and particularly relates to the technical field of data acquisition and processing, comprising: an edge node automatically identifies a device protocol and maps the device protocol to a unified namespace to generate a standardized data stream with a device identifier; adaptively adjusting a time window according to the change rate and recording a sequence number to form an event data frame; the event data frame is packaged into a context message, the context message is dynamically routed to a Kafka target partition according to a production stage label in combination with a partition load, and a dual-threshold local cache is synchronously adopted to resist link jitter; a consumer cluster subscribes to a target partition in parallel, after a complete window is compensated through a station bitmap and a frame-lacking mark, alignment is carried out in batches, comprehensive production records are generated, a relational database is filled in batches, and the data are pushed to a front end in real time, so that the problems of data frame loss and historical tracing breakpoint caused by complex adaptation of traditional centralized collection to multi-protocol equipment and link congestion are solved.

A device includes a receiver to receive a packet over a channel at a first frequency and generate a sampled stream of data at a first sample rate corresponding to the first frequency. A data resampler circuit includes a re-timer engine to determine, using a ratio between the first sample rate and a crystal oscillator (XO)-divided sample rate, re-timer values. The data resampler circuit includes a time shifting circuit to re-sample data values of the sampled stream of data associated with locations of the plurality of re-timer values. A correlation circuit uses the re-sampled data values, and the re-timer values to match an expected data pattern to a corresponding data pattern detected in a frame of the packet.

This invention provides a low-Earth orbit (LEO) satellite cross-layer reliability constraint system and method. The system includes a rate adaptive controller, which comprises a fine-grained rate adjustment module and a reliability constraint decision module working collaboratively. The fine-grained rate adjustment module achieves fine-grained continuous adjustment of the transmission rate by allocating non-uniform transmission probabilities to constellation symbols and dynamically adjusting the shaping entropy under a fixed basic modulation and coding format. The reliability constraint decision module is used to statistically model the physical layer decoding reliability and evaluate its statistical confidence level based on the cumulative distribution function of decoding success under different modulation and coding schemes. This invention achieves fine-grained continuous adjustment of the transmission rate through probabilistic shaping technology and introduces a reliability constraint mechanism based on decoding statistical characteristics, thereby improving the throughput and link stability of LEO satellite-to-ground communication under dynamic channels.

The present application relates to the technical field of data communication, in particular to a kind of reverse scattering network uplink and downlink rate adaptive method;Utilize the change of RSSI and phase value and the frequency modulation of channel occurrence carry out mobility detection;Channel estimation is completed based on filter-based channel detection and lossrate estimation;Rate adaptation is carried out to uplink and downlink;In the present application, RSSI value, the change of phase value and the frequency modulation of channel occurrence are used as detection trigger;The selection command in the protocol is introduced to design filter-based detection scheme, which avoids collision in MAC, reduces detection time and improves channel detection accuracy;According to the channel condition obtained by detection, rate adaptation is carried out to uplink and downlink, which greatly improves system throughput.

Various aspects of the present disclosure relate to rate adaptation for a QoS flow. In one aspect, a first network node obtains at least one of a measured UL rate and a measured DL rate for a QoS flow. The first network node determines whether to adapt at least one of a UL rate and a DL rate for the QoS flow based on at least one of the measured UL rate and the measured DL rate for the QoS flow. If the first network node determines to adapt at least one of the UL rate and the DL rate for the QoS flow, the first network node transmits, to a UE, at least one of a reduced or increased UL rate and a reduced or increased DL rate for the QoS flow.

The application provides a baud rate adaptive detection method and system of a CAN bus, the baud rate adaptive detection method of the CAN bus at least includes the following steps: firstly, sampling the CAN data frame of the CAN bus for multiple times, and processing each CAN data frame to obtain effective pulse width data; then, calculating all the effective pulse width data to obtain the greatest common divisor; finally, determining the final baud rate value based on all the greatest common divisors and a pre-stored baud rate table. The application can accurately detect the baud rate of the CAN bus, thereby ensuring the reliability of data transmission in the CAN bus system. The baud rate adaptive detection system of the CAN bus of the application improves the accuracy of detecting the baud rate of the CAN bus through the mutual combination of hardware circuit and software function module, thereby making the baud rate-based data transmission more reliable and the performance of the CAN bus system better.

The invention discloses a parallel stepped convolutional code space coupling coding and decoding (PSCBCC) method and device, belongs to the technical field of channel coding, and is suitable for a large-bandwidth communication scene. According to the method, a frame of data is divided into multiple groups of sub-data, parallel convolutional coding of three paths of input of current sub-data, interleaved previous sub-data and an interleaved previous check sequence is realized by utilizing a parallel coding unit, a current check sequence is generated, and the sub-data and the check sequence are respectively reserved to different subsequent moments to form asymmetric coupling; and during decoding, a parallel decoding unit is matched with a coding structure, and a plurality of groups of log-likelihood ratios are input to realize iterative updating. The throughput rate is improved through parallel processing, the bit error rate performance is enhanced through asymmetric coupling, multi-code-rate adaptation is supported, and the performance is superior to that of existing BCC and 4G / 5G standard codes.

The invention discloses a quality evaluation method and device for a cable for a television serial data interface, and relates to the technical field of communication data processing, a pseudo-random binary sequence and an ill-conditioned code are generated through a linear feedback shift register, and the pseudo-random binary sequence and the ill-conditioned code are converted into serial data through a serializer after being selected by a gating switch. The amplitude of serial data is adjusted through the adjustable attenuator, the serial data is input into a target cable for transmission, and the transmitted signal is processed by the rate adaptive equalizer and analyzed into parallel data by the deserializer. A pseudo-random code checker and a ill-conditioned code checker are adopted for error rate analysis, HD-SDI is gradually upgraded to 3G-SDI and UHD-SDI, and whether the cable meets the corresponding rate requirement or not is judged through dual detection logic. The method comprises the following steps: recording error code initial attenuation values at different rates, constructing a model based on an attenuation formula, calculating beta and gamma to judge the theoretical feasibility of 3G-SDI and UHD-SDI, actually measuring if the theoretical feasibility is feasible, calculating the maximum transmission distance if the theoretical feasibility is not feasible, and finally generating evaluation information containing the applicable rate and the like.

Embodiments of the present disclosure relate to determining a data rate for an uplink transmission. In one aspect, a terminal device receives a message associated with a relative data rate for an uplink transmission from a network device, and the uplink transmission is to the network device. Based on the relative data rate, the terminal device determines a data rate for the uplink transmission. Based on the data rate, the terminal device performs data rate adaptation and the uplink transmission to the network device.

An electronic device and method using a rate-adaptive codec for dynamic point cloud compression are provided. The electronic device receives a point cloud frame (PCF) sequence including a reference PCF set and a current PCF to be encoded. The electronic device generates 3D feature data based on applying a neural network-based encoder to at least one of the reference PCF set and the current PCF. The electronic device selects an encoding path for the current PCF from an encoding pipeline as an I-frame encoding path or a P-frame encoding path. The selected encoding path can extend from an output of the neural network-based encoder and includes a first set of transformation operations that can be applied to the 3D feature data. The electronic device generates a bitstream of coded PCFs based on applying the first set of transformation operations to the 3D feature data.

The invention relates to the technical field of communication, in particular to an interface channel rate adaptation method and system and a computer program product, and the method comprises the steps: generating a token of a corresponding channel in a clock domain of each channel according to channel flow; synchronizing tokens of all channels to a main clock domain; and scheduling the flow of each channel in the main clock domain according to the token accumulation number of each channel to realize rate adaptation of all channels. According to the method, the token of the corresponding channel is generated in the clock domain of each channel based on the channel flow, the tokens of all the channels are synchronized to the main clock domain through the asynchronous fifo, the flow of each channel is scheduled in the main clock domain according to the accumulated number of the tokens of each channel, and rate adaptation of all the channels is achieved.

An example a first network entity for processing feature set data formed from media data includes a processing system comprising one or more processors implemented in circuitry, the processing system being configured to: determine a first set of processing tasks of a series of processing tasks to be performed on a set of media data, the first set of processing tasks corresponding to tasks to be performed by the first network entity, wherein a second set of processing tasks is to be performed by a second network entity; perform the first set of processing tasks on the set of media data to form a feature map; encode the feature map to form an encoded feature map; and send the encoded feature map to the second network entity to enable the second network entity to perform the second set of processing tasks using the feature map.

A communication method includes, when a rate adaptation or a frequency offset adjustment is performed on a first block sequence, a quantity of first preset blocks that are added or deleted is one of one or more preset values. In this way, a receive end may determine, based on whether the quantity of first preset blocks in the received first block sequence is a preset value, whether an exception occurs in the first preset block during transmission. Based on this, a false packet can be accepted as a correct packet less frequently, thereby improving a mean time to false packet acceptance (MTTFPA) indicator.

The application discloses a kind of cable quality evaluation method and device for television serial data interface, it is related to communication data processing technical field, the present application generates pseudo-random binary sequence and ill-conditioned code by linear feedback shift register, after being selected by gating switch, it is converted into serial data by serializer.The amplitude of serial data is adjusted by adjustable attenuator, input target cable transmission, after transmission, signal is processed by rate adaptive equalizer, and is parsed into parallel data by deserializer.Pseudo-random code and ill-conditioned code checker are used for error rate analysis, from HD-SDI gradually upgrade to 3G-SDI, UHD-SDI, whether cable meets corresponding rate requirement is judged by double detection logic.Record the initial attenuation value of error rate under different rates, construct model based on attenuation formula, calculate β and γ to judge the theoretical feasibility of 3G-SDI, UHD-SDI, if feasible, then measured, if not feasible, then calculate the maximum transmission distance, finally generate evaluation information containing applicable rate etc..

The embodiment of the invention discloses a sending rate adaptive adjustment method and device based on mail service provider feedback. The method comprises the following steps: adding automatfreqcontrol system parameters; receiving feedback information of the mail service provider; initializing a mail sending rate according to the system parameters and the feedback information; and performing rate adjustment based on a transmit queue management mechanism. The method has the following advantages: 1, the regulation rules are controlled through system parameters, and different speed regulation rules can be specified according to different letter receiving domain names; and 2, the self-adaptive adjustment of the mail sending rate is realized based on the feedback information of the mail service provider, and the system regularly adjusts the rate according to the sending condition, so that the manual participation is almost not needed. And 3, the sending rate is updated in time according to the feedback information, so that continuous retry or failure caused by speed limitation is avoided, the delivery rate and the sending stability of mail sending are improved, and the sending delay of the mail is also reduced due to timed speed increase.

The invention relates to a protocol conversion method and system for an Autbus and FC equipment, and the method comprises the steps: S1, receiving an FC message, and carrying out the priority marking and traffic shaping according to the priority and data type of the FC message; s2, analyzing the FC message, and extracting the data load of the FC message; s3, according to the Autbus protocol and the traffic shaping result, splitting and packaging the data load of the FC message to form a packaged Autbus message; s4, according to the priority identifier, adding the Autbus message into a corresponding cache queue; s5, based on a dynamic time slot resource allocation algorithm, allocating a time slot for the Autbus message, and transmitting the Autbus message through an Autbus bus; s6, an Autbus message is received, and decoding, verification and analysis are carried out on the Autbus message; s7, according to FC protocol recombination data, FC message recombination is carried out on the analyzed Autbus message; s8, performing end-to-end integrity verification on the recombined FC message; and S9, carrying out flow control and rate adaptation based on the FC equipment capability and the network condition, and then sending the recombined FC message.