54 results about "Cyclic redundancy check" patented technology

This application provides an encoding method, a decoding method, and a communication device, relating to the field of wireless communication technology, to provide an encoding and decoding scheme that improves encoding and decoding efficiency. The first communication device in this application determines cyclic redundancy check (CRC) bits based on the number of information bits included in the information sequence; the first communication device adds CRC bits to the information sequence to obtain a sequence to be encoded; the first communication device performs RM encoding on the sequence to be encoded to obtain a codeword sequence. The first communication device performs RM encoding on the sequence to be encoded with added CRC bits, thus allowing verification based on the CRC bits during the decoding process to ensure decoding accuracy; after the decoding result is verified to be correct based on the CRC bits, decoding can be stopped, thereby shortening the decoding process and improving decoding efficiency.

A method for measuring cut-through forwarding (CTF) network latency in a network including a sending node and a receiving node. The method includes: generating a latency measurement message (DM) at the sending node. Furthermore, the DM includes a erroneous cyclic redundancy check (CRC). The method further includes: recording a first timestamp at the sending node and sending the DM to the receiving node. The method also includes: receiving the DM at the receiving node and determining that the DM has an erroneous CRC, thereby including: measuring the network latency.

This invention discloses a method for semantic encoding / decoding and reliable transmission of multimodal data oriented towards channel polarization. The method includes: acquiring anchor points and target modal semantic features of multimodal data; calculating the reliability of polarization subchannels; asymmetrically mapping the two types of features to different reliability intervals according to priority and encoding and transmitting them; the receiver preferentially decodes anchor point features to reconstruct cross-modal semantic prior vectors; using the SCL algorithm to decode and split the target features, reconstructing the local semantic features of the current split path and calculating the cross-modal semantic distortion with the prior vector; and dynamically generating a joint path metric based on polarization feature parameters for list pruning, breaking the cyclic redundancy check red line, blocking retransmissions, and directly outputting the path with the minimum semantic distortion. This invention breaks down the separation between the physical and semantic layers, avoiding erroneous pruning and retransmissions caused by local noise in deep fading channels, and achieving semantic coherence and reliable transmission in complex environments.

The application discloses a data integrity multiple verification method and system of a double-channel safety control system, relates to the technical field of data verification of safety control systems, and comprises the following steps: performing inboard double-channel cross voting on input signals obtained by double channels of a board card, performing one cycle redundancy check on voting result data, and performing cycle redundancy check code packaging based on a communication protocol to obtain a protocol data packet containing double cycle redundancy check codes; performing secondary cycle redundancy check based on the double cycle redundancy check codes after analyzing the protocol data packet in a main control board to obtain effective data; performing cross check and voting on the effective data of double channels of the main control board to generate a channel local voting result; performing board card level check on the channel local voting result and then performing global check, judging global data consistency based on a global check code, and identifying system faults. The application improves the comprehensiveness and effectiveness of data check, and solves the problem that single point faults or data errors cannot be avoided.

A Modbus multi-device convergence forwarding method and system based on RK3588, in the method, according to the device information, a continuous TCP slave register address space is allocated for each sub-device; a mapping table is generated and stored in the local storage; the data of each sub-device is collected; if a temporary cyclic redundancy check error is detected, a preset number of retransmissions are performed; if the retransmission fails, the corresponding sub-device is marked as a communication abnormal state, and the sub-device is skipped in the next polling cycle; the successfully transmitted data is written into the corresponding TCP slave register address space according to the mapping table and sent to the remote server; the mapping table is updated when the device hot plug is detected, and the remote server is synchronized through the heartbeat packet; based on the pre-trained time series data model, the successfully transmitted data is detected; when it is detected that the successfully transmitted data deviates from the prediction confidence interval, it is determined that the data is abnormal, and the abnormal data is marked and added to the heartbeat packet. The present application is used for improving the reliability of data acquisition.

This application provides a method and apparatus for decoding polar codes. It involves acquiring P polar codewords from an information bit sequence, then using these P polar codewords to perform symbol processing on a first channel received value of the polar code to obtain a second channel received value. The second channel received value is then decoded to obtain multiple candidate paths. Finally, cyclic redundancy check (CRC) checks are performed on the multiple candidate paths, and the first candidate path is output as the decoding result, which helps improve decoding performance.

The present application relates to the technical field of communications, and provides a communication method and apparatus, which can reduce sending power of a sending end device when the sending end device encodes an information bit sequence and improve the transmission performance. The method comprises: a sending end device acquiring an information bit sequence, the information bit sequence comprising a first sequence and a second sequence; transforming the first sequence to obtain a third sequence; generating cyclic redundancy check (CRC) bits on the basis of the second sequence to obtain a fourth sequence; and encoding the fourth sequence and the third sequence to obtain an encoded bit sequence.

This invention relates to an FPGA-based BiSS-C protocol host interface and its implementation method. The host interface includes: a serial port instruction parsing module for receiving and parsing serial port instructions issued by a host computer; a pulse trigger control module for generating a corresponding number of trigger pulses according to the parsed instruction type; a clock generation module for generating a MA clock signal conforming to the BiSS-C protocol timing under the drive of the trigger pulses; a parameter latching module for latching address parameters and / or data parameters; a data decoding module for sampling and decoding the SLO signal from the BiSS-C slave device under the synchronization of the MA clock signal; and a CRC check module for performing cyclic redundancy check on the decoded data. This host interface realizes the parsing and response to host computer commands through a custom serial port instruction set, and supports multiple working modes such as read angle and register read / write.

The present disclosure provides approaches for determining retransmission criteria in a wireless communication system, with particular interest in analog transmission systems. The proposed methods and apparatuses improve the efficiency and accuracy of information transmission by using criteria such as signal quality, distortion metric, or cyclic redundancy check to determine whether to request or perform retransmission of an analog decoded signal. Thus, methods are provided that enable wireless communication to be performed at both a first wireless device (transmitter) and a second wireless device (receiver), which involves the transmitter transmitting an analog decoded signal to the receiver, and the receiver determining a retransmission criterion based on the received signal and sending feedback to the transmitter. The feedback can be a non-acknowledgement or acknowledgement determined based on the aforementioned criteria, or the feedback can be the criterion itself. In response to the feedback, the transmitter determines whether to transmit a retransmission of the analog decoded signal.

The present disclosure provides a method and a user equipment performed by a user equipment (UE). The method comprises determining a number of groups of low mobility (LM) opportunities (LMOs) for a low power wake-up signal (LP-WUS) opportunity (LO) according to configuration parameters of the LP-WUS in a system information block (SIB); and determining a cyclic redundancy check (CRC) length or a number of coded bits used by the LP-WUS according to the number of groups.

A memory device and a data output method thereof are provided. The memory device includes a memory cell array, a data selector configured to receive data from the memory cell array and output the received data as first sub-data and second sub-data, a cyclic redundancy check (CRC) generator configured to generate a first CRC value corresponding to the first sub-data and a second CRC value corresponding to the second sub-data, a CRC selector configured to determine an order of the first CRC value and the second CRC value and output the first CRC value and the second CRC value according to the determined order, and a transmitter configured to receive the first CRC value and the second CRC value according to the determined order and transmit the ordered first CRC value and second CRC value through a multi-level signaling method.

Systems and methods are disclosed, including a memory system that includes a memory array and a memory controller. The memory array includes memory cells that are included in multiple memory dies. The memory controller includes a cyclic redundancy check (CRC) encoder configured to determine a CRC code using a data word received by the memory controller; and a Bose-Chaudri-Hocqenghem (BCH) encoder configured to determine a BCH code using the data word and the CRC code. The memory controller is configured to store the data word in the memory array and store the BCH code and the CRC code in the memory array in association with the data word.

A method includes receiving, from a network element, a first downlink control information (DCI) message, wherein the first DCI message comprises a plurality of DCI fields. The method also includes determining a first radio network temporary identifier (RNTI) type of a first RNTI that is used for scrambling cyclic redundancy check (CRC) bits of the first DCI message. The method also includes determining a waveform type indicated by a second DCI message, wherein the second DCI message is a most recent DCI message received by the apparatus prior to the first DCI message, and wherein CRC bits of the second DCI message are scrambled by a second RNTI, and wherein the second RNTI is a cell RNTI (C-RNTI). The method also includes decoding the first DCI message based at least in part on the first RNTI type and the waveform type.

The present disclosure provides a method executed by a user equipment (UE) and a UE. The method comprises: on the basis of a configuration parameter of a low-power wake-up signal (LP-WUS) in a system information block (SIB), determining the number of groups for LP-WUS monitoring occasions (LMOs) in an LP-WUS occasion (LO); and on the basis of the number of groups, determining the length of cyclic redundancy check (CRC) used by the LP-WUS or the number of encoded bits.

This invention provides a method and system for intelligent handover of 2M unframed dual-path protection based on redundancy check, relating to the field of communication technology. The method includes acquiring and aligning dual 2M unframed bitstreams, generating check results using cyclic redundancy check, statistically analyzing error feature vectors within a sliding time window, constructing a link quality trajectory, extracting quality degradation warning signals, constructing a phased handover strategy based on the warning signals, and determining the handover timing sequence and executing link handover using a neural network evaluator. This achieves adaptive optimization of the handover strategy, improving the intelligence and reliability of link handover.

The present application relates to the technical field of display screens, and relates to a data burning and self-test method and apparatus for a display panel, and a flash integrated circuit (Flash IC), a computer-readable storage medium and a computer program product. The method comprises: when it is detected that a Flash IC has received a burning drive signal, outputting an output voltage having at least one voltage state; on the basis of the voltage state and an addressing region mapping table, determining, from the Flash IC, an addressing region to be subjected to burning that corresponds to the output voltage of a timing control module, and controlling other regions to be in a latched state; after data burning is finished, acquiring current cyclic redundancy check values of all the regions in the Flash IC; and comparing the current cyclic redundancy check values with a preset cyclic redundancy check value for verification, so as to obtain a data burning self-test result. During two consecutive burning operations, and in the presence of an external interference signal, the present method can reduce the impact on data of other address regions in a Flash IC.

The application discloses a battery energy storage system monitoring method based on Internet of Things, and relates to the field of energy management.The method establishes multiple source collection points on each Internet of Things monitoring node of the battery energy storage system, and under the synchronous sampling instruction of a master control module, real-time operation data is collected, and the collaborative collection of multi-node and multi-dimensional data is realized.The edge computing unit utilizes a CRC-32 cyclic redundancy check algorithm and a clock synchronization mechanism to automatically complete data integrity verification and timestamp alignment, thereby ensuring the synchronization and consistency of data uploaded by different nodes in the time dimension.Meanwhile, through the joint noise reduction mechanism of Kalman filtering and sliding median filtering, and the unit dimension standardization processing of a dynamic interval normalization algorithm, the data deviation caused by sensor jitter, communication interference and physical quantity difference is effectively eliminated, so that the node-level monitoring matrix has stable data structure and high-quality input when formed.

The application discloses a two-dimensional user identity mapping and large-scale license-free access method based on prime number interleaving series spread spectrum, which comprises the following steps: at the user end, sequentially performing cyclic redundancy check addition, data segmentation and GRS coding, modulation and aggregation on original information packets; embedding a prime number interleaver in the two-dimensional user identity into the aggregated frame vector; concatenating and spreading the interleaved symbol vector to form a transmission signal vector; the two-dimensional user identity further comprises a spread spectrum signature, and the spread spectrum signature is an outer layer identity, and the prime number interleaver is an inner layer identity; at the base station, the superimposed signal is divided into multiple spread spectrum segments, and the spread spectrum signature is detected to determine the collision group corresponding to the candidate spread spectrum signature; the prime number interleaver is used to separate the collision users in the collision group, and the user data of the collision users is decoded and verified. The application can improve the fine separation ability of the collision users without increasing the length of the spread spectrum sequence, without expanding the size of the finite field, and without increasing the regulation of the low power consumption and low operation amount of the Internet of Things terminal.

This invention specifically relates to an improved polar code successive cancellation list bit-flipping (SCLF) decoding method based on an assigned set (AS) and a dynamic logarithm likelihood ratio (LLR) threshold. This method first constructs an AS set using path metric (PM) information from Cyclic Redundancy Check Aided Successive Cancellation List (CA-SCL) decoding. Then, it performs a secondary selection of the AS set using a dynamic LLR threshold based on the code length and the maximum number of flips. Simulation results show that this method improves decoding performance and effectively reduces the average number of decoding operations in low signal-to-noise ratio regions, achieving optimization of both decoding performance and computational complexity.

A wireless transmit / receive unit (WTRU) may low-density parity-check (LDPC) encode data into LDPC blocks. Further, the WTRU may produce and append a cyclic redundancy check (CRC) to each of the LDPC blocks. Also, the WTRU may concatenate the plurality of LDPC blocks and appended CRCs. Additionally, the WTRU may produce information associated with error checks. Moreover, the WTRU may produce a codeword using a codebook. The codeword may be based on the information associated with the error checks. In addition, the WTRU may produce an orthogonal frequency-division multiplex (OFDM) signal by mapping the codeword and the concatenated plurality of LDPC blocks and appended CRCs onto resource elements of the OFDM signal. Further, the WTRU may transmit the produced OFDM signal. In a further example, the WTRU may produce an additional CRC in addition to the appended CRCs, and the produced OFDM signal may include the additional CRC.

The present application relates to a kind of high information security collaborative obstacle avoidance method and system for vehicle networking automatic driving vehicle, it is related to vehicle networking automatic driving vehicle and vehicle networking network information security field.Vehicle networking automatic driving vehicle realizes high safety operation scene function such as automatic obstacle avoidance when, collaborative obstacle avoidance key business data faces information security challenge such as data protection, information transmission security.The present application adopts the linkage of three kinds of information security methods such as fusion token, serial number and cyclic redundancy check code to realize the data protection and security reinforcement of key business data.In the process that vehicle networking automatic driving vehicle realizes collaborative obstacle avoidance, around the process of data generation, encapsulation transmission, receiving verification, decision execution, form layer by layer progressive data security protection system.The present application combines business token inspection, data frame serial number and redundancy information check technology, realizes the data protection and security communication protection in the key business process of collaborative obstacle avoidance of vehicle networking automatic driving vehicle.

The application provides a transmission block segmentation method, device and electronic equipment for wireless communication. The method comprises the following steps: obtaining an original bit sequence of a packaged transmission block, wherein the original bit sequence comprises a data information sequence and a cyclic redundancy check sequence; calculating a segmentation number according to the original bit sequence to obtain a target segmentation number; in the case that the length of the original bit sequence is an integer multiple of the target segmentation number, segmenting the processed original bit sequence according to the target segmentation number; in the case that the length of the original bit sequence is not an integer multiple of the target segmentation number, expanding the original bit sequence to an integer multiple of the target segmentation number to obtain a target bit sequence, and segmenting the processed target bit sequence according to the target segmentation number. The method solves the problem that in the prior art, in the case that the length of the transmission block is not an integer multiple of the segmentation number, the transmission fails due to the mismatch of the segmentation of the transmitting and receiving parties.

The present application relates to the technical field of wireless communications. Provided are an encoding method, a decoding method and a communication apparatus, which are used for providing encoding and decoding solutions, so as to improve the encoding and decoding efficiency. In the present application, a first communication apparatus determines a cyclic redundancy check (CRC) bit on the basis of the number of information bits comprised in an information sequence; the first communication apparatus adds the CRC bit to the information sequence, so as to obtain a sequence to be encoded; and the first communication apparatus performs RM encoding on the sequence to be encoded, so as to obtain a codeword sequence. In the present application, the first communication apparatus performs RM encoding on the sequence to be encoded, to which the CRC bit has been added, such that checking can be performed on the basis of the CRC bit during a decoding process, thereby ensuring the accuracy of decoding; and after a decoding result passes verification based on the CRC bit, decoding can be stopped, such that the decoding process can be shortened, thereby improving decoding efficiency.

The application provides a control channel configuration method, a detection method, a device, equipment and a mobile terminal, and relates to the technical field of communication. The method comprises the following steps: configuring configuration information of a search space for a terminal, the search space being associated with at least one radio network temporary identifier (RNTI), the RNTI being used for scrambling the cyclic redundancy check (CRC) of a PDCCH scheduling a multicast and / or broadcast service, or the search space being associated with at least one multicast and / or broadcast service index. The scheme of the application solves the problem of low utilization rate of multicast or broadcast service resources in the prior art.

A transmission processing method and apparatus, a terminal, and a network-side device are provided. The transmission processing method includes: a terminal performs a first operation in a case that the terminal is configured with wake up signal WUS monitoring, where the first operation includes at least one of the following: determining a first monitoring behavior of a WUS based on configuration information of discontinuous reception DRX in a case that the terminal is not configured with downlink control information with cyclic redundancy check scrambled by a power saving radio network temporary identifier DCP; or determining at least one of a second monitoring behavior of a WUS based on detection results of DCP or a third monitoring behavior of the DCP based on detection results of the WUS in a case that the terminal is configured with the DCP.

The disclosure relates to a memory device and an operating method thereof. The memory device according to an embodiment of the disclosure includes a plurality of memory cells, a plurality of page buffers storing or reading data in or from the plurality of memory cells, a plurality of bit lines connected between the plurality of memory cells and the plurality of page buffers, and a cyclic redundancy check unit including a collection unit collecting bit line data loaded on the plurality of bit lines and a calculation unit performing a cyclic redundancy check (CRC) on the collected bit line data.