813 results about "Cyclic redundancy check" patented technology

The invention relates to the technical field of data encryption, and discloses a data encryption protection system and method for intelligent controller hardware, and the method comprises the steps: generating a random confusion factor based on a real-time operation state through constructing a dynamic confusion algorithm, and carrying out the nonlinear transformation of original data; implementing a fragment encryption strategy, dividing fragments according to data sensitivity levels, and adopting a heterogeneous encryption algorithm; generating a dynamic binding key in combination with the environment parameters and the hardware unique identifier; hardware-level integrity check is executed, and data and hardware are verified through cyclic redundancy check codes and hardware fingerprints; establishing a self-adaptive key updating mechanism; performing multi-layer defense linkage; and implementing anti-side channel protection, and constructing a security audit log. According to the method, the hardware data security of the intelligent controller is comprehensively guaranteed, various security threats are effectively resisted, and the data confidentiality, integrity and availability are improved.

The invention relates to the technical field of data encryption, and discloses an encrypted storage method and system for flight data and a storage medium. The method comprises the steps that an encrypted data packet is compressed through a time sequence compression algorithm, a wavelet transform compression algorithm and a DCT compression algorithm, redundancy check processing is carried out, a coded data packet is obtained, and the coded data packet comprises a data frame with a predefined format; carrying out storage space distribution on the data frames in the coded data packet according to the data hierarchy to which the data frames belong, dividing the storage space into a fixed area and a dynamic area, and establishing a storage space mapping table to obtain a stored data packet; and performing cyclic redundancy check and integrity scanning on the stored data packet, performing anomaly detection by comparing the storage mapping table, and performing data repair by encoding redundant information to obtain an encrypted and stored flight data packet. According to the invention, differentiated encrypted storage and dynamic space distribution are realized, and meanwhile, the integrity and restorability of data are ensured.

A user equipment (UE) is described. The UE may include receiving circuitry configured to receive a first radio resource control (RRC) message comprising first information used for configuring a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH) configuration, to receive a second RRC message comprising second information used for configuring that deferring of SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK) is supported, to receive a third RRC message comprising third information used for configuring cell switching (based on semi-static configuration and / or dynamic indication), and to receive, based on a detection of a physical downlink control channel (PDCCH) carrying a downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by a first radio network identifier (RNTI) for an activation of the SPS PDSCH, the SPS PDSCH transmission. The UE may also include transmitting circuitry configured to transmit HARQ-ACK information and configured to defer the HARQ-ACK information transmission.

The invention discloses an adaptive modulation anti-multipath unmanned aerial vehicle swarm communication method and system based on MIMO-OFDM, and relates to the technical field of wireless communication, and the method comprises the steps: receiving a down-conversion baseband; synchronization and compensation are carried out; removing a cyclic prefix and carrying out fast Fourier transform; estimating a channel and noise on the training and pilot frequency, and correcting a common phase; performing frequency domain equalization and soft decision, forward error correction and cyclic redundancy check according to the estimation to obtain a control parameter, decoding a payload according to the control parameter, and performing statistics to form a link quality indication; modulating coding, bandwidth and spatial mode, configuring mapping, power and weight, and packaging physical layer protocol data; carrier sensing conflict avoiding sending, confirmation and retry are adopted to generate media access statistics; and the routing selects the next-hop multi-hop forwarding according to the transmission quality, and performs end-to-end statistics and recharge. Through cooperation of hierarchical synchronization and phase correction with cyclic prefix and FFT, crosstalk is suppressed, channel noise scale optimization soft decision is robust, data decoupling is controlled, and end-to-end availability is improved through multi-hop self-healing recharge.

The invention provides a PSI5-based data detection method and system, and the method comprises the steps: receiving a data frame transmitted by a sensor through a peripheral sensor interface PSI5 of each ECU, and enabling the format of the data frame to be defined through a PSI5 protocol; and each ECU inputs the data passing through the cyclic redundancy check into the data frame anomaly prediction model, identifies normal and abnormal data modes, and sends the data frame identified as the normal mode to a main control unit in the automobile according to the time slot allocated by the dynamic time slot. Through the method and the corresponding system, the precision, the efficiency and the safety of data collection and processing in the automobile can be effectively improved.

The embodiment of the invention provides a data processing method and device, electronic equipment and a storage medium, is suitable for a processor comprising a first integrated circuit unit and a second integrated circuit unit, and comprises the following steps: acquiring to-be-transmitted data and providing the to-be-transmitted data to the first integrated circuit unit; the verification information of the data to be transmitted is generated, the verification information comprises state information of a forward error correction code, data information of the forward error correction code and state information of cyclic redundancy check, and the data information of the forward error correction code and error data in the data to be transmitted have a corresponding relation; and sending the verification information and the to-be-transmitted data to the second integrated circuit unit, so that the second integrated circuit unit sends the to-be-transmitted data to the second integrated circuit unit under the condition that the state information of the forward error correction code is error-free or correctable error and the state information of the cyclic redundancy check is error-free. And a correct cyclic redundancy check code is calculated based on the received data to be transmitted and the data information of the forward error correction code, so that efficient data transmission is realized.

The invention provides a vehicle-mounted data grading processing method, system, device and medium, the method is cooperatively realized by a cloud end and a terminal device, and the method specifically comprises the following steps: the cloud end generates a structured configuration file containing an acquisition signal, a data type, a transmission condition, a priority and a compression rule based on a service scene, a first processor of the terminal equipment analyzes a received structured configuration file to generate an acquisition white list, a second controller filters controller messages according to the white list, executes double verification of cyclic redundancy check and counter tamper-proofing, and transmits valid data passing the verification in a hierarchical manner according to priorities, and a cloud terminal performs hierarchical decompression analysis on the received data and sends the analyzed data to a server. A historical data supplement mechanism is triggered when the data is abnormal, and the terminal equipment responds to the request to upload data in a specified time period and performs compensation analysis; according to the method, the collection flexibility is realized through dynamic configuration, and the problems of high computing power pressure of terminal equipment, non-uniform network transmission distribution and low cloud computing power utilization rate are solved.

The invention relates to a burning system, in particular to a liquid crystal display burning device which comprises a control module, a storage module, a burning interface module, a verification module, a monitoring module and a communication module. The control module comprises an embedded microcontroller and is used for receiving and analyzing a burning instruction and distributing the instruction to the related modules; the storage module is composed of an EEPROM and a high-speed RAM and used for storing a burning program and temporary data. The burning interface module comprises a plurality of hardware driving circuits supporting I2C, SPI and UART interfaces and is used for being physically connected with the liquid crystal display screen and executing data burning; the verification module consists of a CRC (Cyclic Redundancy Check) processor and a logic control circuit and is used for verifying the integrity of burnt data in real time; the monitoring module integrates a plurality of state detection sensors and an exception handling unit, and is used for monitoring the working state in the burning process and providing an alarm signal; the communication module is composed of a wireless transmission chip and a wired communication interface and is used for remote monitoring and log uploading.

The invention discloses a high-speed camera data self-adaptive two-stage caching system and method and a storage medium, and relates to the technical field of machine vision high-speed imaging and high-speed data storage, a preprocessing unit is used for performing deserialization and parallel connection, ROI cutting and gain adjustment on collected item number data, and writing incremental FrameID and cyclic redundancy check codes into each frame; the DDR annular cache unit comprises a monitoring module, a decision module and an execution module; the decision module is used for calculating an instantaneous cache demand Cnew and a dynamic cache occupancy U; the execution module expands and shrinks an annular buffer space in a single shot through a DDR4 controller, and outputs a Hi / Lo mark in real time through an occupancy rate comparator to drive an NVMe queue manager. According to the invention, on the premise of zero extra burden in a normal working condition, millisecond-level automatic capacity expansion and high-speed flood discharge can be realized in a sudden working condition, and real-time frame-level integrity verification can be completed on a local FPGA (Field Programmable Gate Array) side. The patent is subsidized by national key research and development plans, and the project number is 2023YFF0719700.

The invention provides an FPGA program loading and updating method and system, and relates to the technical field of FPGA configuration management. The FPGA program loading and updating method comprises the following steps: S1, based on an RS422 physical layer protocol, adopting a self-adaptive block verification algorithm, acquiring a signal-to-noise ratio parameter in real time through a channel quality monitoring module, dynamically adjusting the size of a data packet, and implementing a double-buffer alternate receiving mechanism; and verifying each data block by using cyclic redundancy check and serial number continuity detection, discarding abnormal data packets with bit error rates exceeding the limit, and generating a data block set passing verification. Through combination of an adaptive block check algorithm and channel quality dynamic monitoring, real-time optimization and adjustment of the size of a data packet in a transmission process are realized, transmission requirements in different channel environments are effectively adapted, the data retransmission probability is reduced, and through cooperative application of a double-buffer alternate receiving mechanism, cyclic redundancy check and a serial number tracking technology, the transmission efficiency is improved. And continuity and integrity of data receiving are ensured.

A user equipment (UE) is described. The UE includes receiving circuitry configured to receive a first radio resource control (RRC) message comprising first information used for configuring a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH) configuration, to receive a second RRC message comprising second information used for configuring that deferring of SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK) is supported, to receive a third RRC message comprising third information used for configuring a number of physical uplink control channel (PUCCH) repetitions, and to receive, based on a detection of a physical downlink control channel (PDCCH) carrying a downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by a first radio network identifier (RNTI) for an activation of the SPS PDSCH, the SPS PDSCH transmission. The UE also includes transmitting circuitry configured to transmit HARQ-ACK information and configured to defer the HARQ-ACK information transmission.

The invention relates to the technical field of embedded data storage, and discloses a method and a system for prolonging the service life of a FLASH simulation EEPROM (Electrically Erasable Programmable Read-Only Memory) in a single chip microcomputer, and the method comprises the following steps: firstly, initializing the FLASH, dividing the FLASH into a main data area, a mapping table area, a backup area and a transaction log area, selecting a physical block through a dynamic wear leveling algorithm when data is written, and writing the data into a database; the method comprises the following steps of: starting a backup area or a transaction log area, safely updating a mapping table by using a transaction mechanism, performing cyclic redundancy check when reading data, if the cyclic redundancy check fails, starting cascade recovery from the backup area or the transaction log area, and finally, updating a transaction log to record operation so as to form a closed-loop management process. According to the invention, through a set of dynamic wear leveling and data classification management mechanism, global and uniform distribution of the write load in the storage array is realized, the physical block with the least erasing times is selected during writing, the access frequency of the data can be identified, and cold data which is not changed frequently can be actively migrated.

The invention discloses a communication data transmission method and system for an intelligent charging pile, and relates to the technical field of intelligent charging pile communication, and the method comprises the steps: constructing a reverse power line transmission channel model based on an equivalent channel response matrix, extracting channel frequency response, generating a channel equalization configuration parameter set through a joint optimization equalization algorithm, and transmitting the channel equalization configuration parameter set to a communication module. Subcarrier modulation orders are dynamically allocated according to the signal-to-noise ratio parameter, and a pre-balanced OFDM time domain signal is generated; on the basis of the channel equalization configuration parameter set and the pre-equalization OFDM time domain signal, dynamically monitoring power frequency harmonic noise of the cable, and inhibiting interference through a filtering algorithm to generate a clean power line carrier signal; and generating a verified V2G communication control instruction through a cyclic redundancy check method based on the clean power line carrier signal in combination with the main polarization direction feature vector. According to the method, an accurate channel model is constructed by combining an equivalent channel response matrix and cable characteristics, and dynamic subcarrier distribution is realized based on signal-to-noise ratio parameters.

A cyclic redundancy check bit determination method and system, the method including obtaining an information bit, determining, based on a first correspondence, that a check bit length is L, where L is a natural number, and where the first correspondence includes a correspondence among code length information of to-be-transmitted data including the information bit, length information of the information bit, and the check bit length, and determining a first check bit based on a first cyclic redundancy check (CRC) polynomial, where a length of the first check bit is the check bit length L, where a highest power of terms in the first CRC polynomial is Lmax, where Lmax is a positive integer, and where Lmax is greater than or equal to L.

The invention discloses a data processing fault-tolerant method, device and equipment based on an RFID tag and a medium, and relates to the technical field of data processing.The data transmission interference coefficient Xcs is constructed by monitoring the transmission environment and the signal strength state of RFID tag data in the process of transmitting the RFID tag data to an application software system in real time and combining a statistical averaging algorithm; comparing and analyzing the current RFID tag data with a preset interference threshold G, judging whether the current RFID tag data has a transmission error risk or not, and analyzing the integrity of the transmitted RFID tag data by combining a cyclic redundancy check algorithm; and based on the integrity of the RFID tag data, carrying out legality fault-tolerant verification analysis on the RFID tag data to obtain a legality coefficient Xhf, and judging whether the data belongs to a legal state or not according to the value of the legality coefficient Xhf so as to generate a corresponding data processing fault-tolerant instruction and execute the data processing fault-tolerant instruction.

Provided are a physical downlink control channel (PDCCH) blind detection method and a first terminal, the method being applied to the first terminal, the first terminal comprising a decoder device, the method comprising: determining a message type of DCI according to PDCCH scheduling information sent by a network device, the message type being a public message type or a proprietary message type; according to the message type, PDCCH blind detection parameters are determined, and the PDCCH blind detection parameters comprise at least one RNTI value; calling a decoder device to execute a detection task on the demodulated first data signal to obtain target data corresponding to the first terminal; wherein the detection task comprises decoding related processing and at least one CRC (Cyclic Redundancy Check) processing corresponding to at least one RNTI (Radio Network Temporary Identity) value. According to the scheme provided by the invention, the time consumption of the PDCCH blind detection process is reduced, and the efficiency of the PDCCH blind detection is improved.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) associated with a DCI format for shared channel scheduling on a set of cells, wherein the DCI is associated with a cell radio network temporary identifier (C-RNTI) and a configured scheduling radio network temporary identifier (CS-RNTI). The UE may decode the DCI to identify a scheduling on the set of cells or to identify downlink feedback information (DFI) based at least in part on a determination of whether the C-RNTI or the CS-RNTI satisfies a cyclic redundancy check (CRC). Numerous other aspects are described.

The invention provides a cyclic redundancy check method and device and a logic chip, and relates to the technical field of electronics. The cyclic redundancy check method comprises the following steps: acquiring to-be-processed data; splitting the to-be-processed data based on a preset bit width to generate N sub-data; performing CRC operation on the N sub-data according to a CRC matrix corresponding to a preset bit width to generate M first CRC values; and for the M first CRC values, selecting a corresponding CRC sub-matrix from the N CRC sub-matrixes according to the position of the sub-data corresponding to the current first CRC value in the data packet from the first first CRC value to the last first CRC value, performing CRC operation on the current first CRC value and the previous first CRC value to obtain M second CRC values, and performing XOR operation on the M second CRC values to determine a target CRC value. Through the method, the time sequence requirement of logic chip design can be met.

The present application provides a data check method, device and system, which are applied to the field of communications. The method comprises: obtaining operation environment information, check information and data to be checked; on the basis of the operation environment information and the check information, matching a target check mode, wherein the target check mode is one of a first check mode, a second check mode and a third check mode, the first check mode completes cyclic redundancy check (CRC) calculation on the basis of vectorization calculation, the second check mode completes the CRC calculation on the basis of a hardware CRC, and the third check mode completes the CRC calculation on the basis of a look-up table; and checking said data on the basis of the target check mode. The present application can support various CRC algorithms, and adaptively provide an optimal check mode on the basis of system information, thereby increasing the calculation speed, and optimizing data check.

Apparatuses and methods for transmission and reception between a reader and an Internet of Things (IoT) device. A method includes receiving a physical reader-to-device channel (PRDCH) from the reader. The PRDCH includes a medium access control (MAC) header and a payload. The MAC header indicates (i) a type of reader-to-device (R2D) message and (ii) information related to determining a size of the payload. The MAC header and the payload are jointly attached with a single set of cyclic redundancy check (CRC) bits. The method further includes determining, based on reception of the PRDCH, a transmission of a physical device-to-reader channel (PDRCH) to the reader including determining a type of device-to-reader (D2R) message, a size of a payload of the D2R message, a length of the PDRCH transmission, and a transmission timing of the PDRCH. The method further includes transmitting the PDRCH to the reader.

The invention relates to the technical field of data processing, in particular to an FPGA (Field Programmable Gate Array) and CPU (Central Processing Unit) cooperative network data processing system, which comprises a network interface module for receiving and forwarding an external data flow, and a protocol analysis module for distinguishing a service message and a protocol message based on a message header characteristic and a load mode; the service processing module executes protocol format conversion, security encryption and data extraction in the FPGA; the protocol stack interaction module transmits a protocol message to the CPU through the MAC layer communication interface; the protocol stack module activates necessary protocol services in the CPU and generates a resource allocation instruction; and the data integration module receives the service data flow and the protocol processing result, and dynamically adjusts the encryption rule. According to the invention, FPGA business data closed-loop processing and CPU protocol service physical isolation are realized, a double-processing-unit architecture supports financial signature and industrial filtering cascade operation, the MAC layer interface is additionally provided with cyclic redundancy check to guarantee transmission reliability, and equipment processing efficiency and anti-attack capability under a fusion scene are improved.

The invention relates to the technical field of communication, in particular to a splitting and recombining method for improving transmission efficiency and reliability of a security protocol data unit, which is characterized in that a module adopting a random additive noise decoding algorithm is inserted between a security communication layer and a black channel on the basis of a framework of an IEC61784-3 standard, and is used for error correction processing of CRC (cyclic redundancy check) coding SPDU (security protocol data unit); a standard black channel security communication protocol architecture can be seamlessly connected, performance expansion and popularization in an industrial scene are facilitated, a splitting / recombination mechanism of a long SPDU is provided, splitting processing is performed on the long SPDU from a security communication layer, a plurality of short packet SPDUs are formed, guess decoding of a receiving end is facilitated, SPDU transmission reliability is improved, and retransmission probability is reduced. The short packet SPDU from the black channel is subjected to parallel guess decoding, the decoding complexity is remarkably reduced, the performance is remarkably improved compared with a traditional CRC error detection mechanism, and therefore the problem that an existing security protocol data unit is poor in transmission reliability is solved.

The invention discloses a large file concurrent uploading method and system based on a dynamic fragmentation strategy and resource optimization, and the method comprises the steps: a client generates a file fingerprint according to the file size of a large file and metadata, and dynamically calculates the fragmentation size of the large file; the client carries out fragment cutting on the large file according to the calculated fragment size, establishes a concurrent uploading queue and uploads a plurality of fragments to a server side in parallel; the server selects an optimal storage node to store each fragment based on a consistent hash ring and a multi-dimensional weight model; the client side and the server side track a fragment uploading state through a fragment serial number and a cyclic redundancy check (CRC) value, and after all fragments are uploaded, integrity check and logic recombination are carried out; and when network interruption or uploading failure is detected, the client side and the server side execute an intelligent retry strategy or a splitting rescheduling strategy of breakpoint resume and failure fragmentation.

Embodiments of the present disclosure relate to multicast transmissions and receptions. According to some embodiments of the disclosure, a UE may: receive, from a base station (BS) in a first search space, a first downlink control information (DCI) for scheduling a first physical downlink shared channel (PDSCH) using a hybrid automatic repeat request (HARQ) process number, wherein a cyclic redundancy check (CRC) of the first DCI is scrambled by a first radio network temporary identifier (RNTI) specific to the UE and the first search space is configured specifically for multicast services; and determine that the first PDSCH carries a transport block (TB) associated with a multicast service.

Wireless communication is performed by: receiving downlink control information including by a user equipment in an inactive state, a cyclic redundancy check scrambled by a radio network with at least one base-station with paging-Radio Network Temporary Identifier at least one user equipment, user equipment monitors paging message in inactive state and uses paging-Radio Network Temporary Identifier to decode reception of paging message, wherein the user equipment receives more than one random-access channel resources from the network and the indication of Small Data transmission and user equipment selects the random-access channel resources.

The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. A first node generates a first bit block, performs channel coding and then transmits a first radio signal. The first bit block comprising all bits in a second bit block and all bits in a third bit block is used for an input of the channel coding, and an output of the channel coding is used for generating the first radio signal. A Cyclic Redundancy Check (CRC) bit block of a fourth bit block is used for generating the third bit block. The fourth bit block comprises all bits in the second bit block and all bits in a fifth bit block, the bits in the fifth bit block are of fixed values, and the fifth bit block is composed of K bits, the K being a positive integer.

The embodiment of the invention relates to the technical field of data transmission security detection, and provides a data transmission detection method and device, electronic equipment and a medium, and the method comprises the steps: receiving target data which is transmitted by a transmitting end and carries a first check code, and obtaining the character length of the first check code; when the character length of the first check code does not meet the integral multiple of the parallelism degree of a cyclic redundancy check algorithm, a preset method is adopted to verify the first check code, and the preset method is a method for carrying out data frame tail zero padding and then backspacing on the first check code; and carrying out transmission anomaly detection on the target data based on a verification result of the first check code. Therefore, processing delay is greatly reduced, resource occupation and power consumption are reduced, and cost is reduced.

A method of wireless communication comprises receiving downlink control information by a user equipment in an inactive state. The downlink control information comprises a cyclic redundancy check scrambled by a radio network with at least one base-station with paging-Radio Network Temporary Identifier. The user equipment monitors paging message in inactive state and uses paging-Radio Network Temporary Identifier to decode reception of paging message, wherein the user equipment receives indication of small data transmission and identifier from radio network with at least one base-station.

The invention discloses a distributed storage management method, an electronic device, a storage medium and a program product, and relates to the technical field of distributed storage. Cyclic redundancy check codes corresponding to data are written into metadata, the amount of metadata written into a distributed key value storage database is reduced, the performance of the distributed key value storage database is improved, and the reliability of the distributed key value storage database is improved. According to the method, the network transmission protocol is expanded, the metadata separation transmission mode is supported, the data logic block pointer and the independent metadata logic block pointer are supported when the distributed storage protocol access layer processes the read-write request, data copying of distributed storage is reduced through the metadata separation transmission mode, and the read-write performance is improved.

The invention discloses a power line communication repeater arrangement method and device and a medium, and relates to the technical field of communication, and the method comprises the steps: building an uplink model and a downlink model based on a power line communication system model and a signal propagation model through employing a frequency division multiplexing technology, and then carrying out the verification through employing a cyclic redundancy check algorithm; when the verification result is that the relay node needs to be started, calculating current channel state data and inputting the current channel state data into a preset channel state prediction model to obtain channel state data at the next moment; performing initial power random allocation based on the channel state data at the next moment to obtain initial signal source power and multiple initial user power; the method comprises the following steps: constructing a constraint function by taking communication quality guarantee as a target, constructing an optimization target function by taking the minimum total power as a target, and then sequentially carrying out initial power optimization solution and relay node position optimization solution by adopting a heuristic algorithm to obtain the optimization position of each relay node. According to the invention, the relay deployment position is optimized, so that the power consumption is reduced while the communication quality is ensured.