14results about "Transmitted data organisation to avoid errors" patented technology

Embodiments of this application provide a buffer status report sending method, a terminal device, and a network device. The method includes: determining, by a terminal device, a first resource, where the first resource is a resource configured for a first channel, and the first channel is a data channel; adding, by the terminal device, a first cyclic redundancy check CRC to a buffer status report; and sending, by the terminal device, a second channel on the first resource, or sending, by the terminal device, the first channel and a second channel on the first resource, where the second channel is used to carry the buffer status report to which the first CRC is added. Based on the embodiments of this application, the terminal device independently adds the first CRC to the buffer status report, and sends the second channel carrying the buffer status report to a network device, so that the network device learns arrival of data corresponding to the second channel at the terminal device. Therefore, the network device can pre-configure a resource for the data, thereby reducing a transmission latency of the data.

This application provides a data scrambling method, a data descrambling method, and a related device. The method in embodiments of this application includes: first, generating a raw data frame, where the raw data frame includes raw data and a PSB; next, generating a preload pattern of a scrambler based on a target bit, where the target bit is a part of bits in an SFC value corresponding to the raw data frame; and further, scrambling the raw data based on the preload pattern to obtain target data. In this application, the raw data is scrambled, so that bits 0 and bits 1 in the scrambled target data are more evenly distributed. This reduces a possibility that consecutive bits 0 or bits 1 appear in the target data, thereby reducing a bit error rate at a data receiving end.

A system for communicating and managing messaging between a source system and a destination system including a publisher module, a topic module that receives the message from the publisher module and including one or more subscription modules, a queue module that receives the message from the topic module, a success queue module, an error queue module, and a subscriber module that receives the message from the queue module, then decompresses, decrypts, calculates the check sum, then prepares the message for transmission to the destination system and transmits the message to the destination system.

The application relates to the technical field of communication, in particular to a cursor label exchange system, method and equipment based on reverse 5B8B code. The system comprises a signal generating module, a parallel modulator, a coupler and a signal receiving module. The signal generating module is used for generating a label signal and a load signal; the parallel modulator is used for modulating an optical carrier by using the load signal and the label signal to obtain a quadrature modulation signal; the coupler is used for splitting the quadrature modulation signal into a label receiving signal and a load receiving signal; and the signal receiving module is used for demodulating the label receiving signal and the load receiving signal to recover the label signal and the load signal. The application has the beneficial technical effects of introducing a simple and low-cost line coding technology into the optical label exchange and combining a quadrature modulation scheme to improve the spectral utilization efficiency of the optical label channel on the basis of reducing the crosstalk between the load signal and the label signal.

This application discloses an encoding method, an apparatus, a communications device, and a communications system. The method includes: encoding an input bit sequence by using a low-density parity-check LDPC matrix, where a base graph of the LDPC matrix is represented by a matrix of m rows and n columns, m is an integer greater than or equal to 5, and n is an integer greater than or equal to 27; the base graph includes at least a submatrix A and a submatrix B; the submatrix A is a matrix of five rows and 22 columns; and the submatrix B is a matrix of five rows and five columns, and the submatrix B includes a column whose weight is 3 and a submatrix B' with a bidiagonal structure. According to the encoding method, the apparatus, the communications device, and the communications system in this application, encoding requirements of information bit sequences of a plurality of lengths can be supported.

A data transmission method and a network device are provided. The method includes: obtaining a to-be-transmitted first MAC packet; obtaining a first data control subframe by using field space of a first field of the first MAC packet, and obtaining a first target data subframe based on a second field of the first MAC packet, where the first data control subframe includes a sequence number of the first target data subframe; and transmitting a first frame including the first data control subframe and the first target data subframe to a target network device. A source network device uses space of the first field to generate the first data control subframe used for retransmission control. In this way, there is no additional overhead. When the target network device fails to receive the first frame, the target network device feeds back the sequence number of the first target data subframe to the source network device, and the source network device retransmits the first frame, to reduce a link bit error rate.

A communication apparatus includes a discriminator that determines whether or not to execute packet coding for generating a plurality of encoded bit sequences having different contents from one transmission data sequence, according to a predetermined condition, a generator that generates a plurality of bit sequences from one transmission data sequence using the packet coding in a case where it is determined that the packet coding is to be performed, and generates one or a plurality of bit sequences from one transmission data sequence without using the packet coding in a case where it is determined that the packet coding is not to be performed, and a distributor that distributes the plurality of bit sequences to a plurality of channels in a case where the plurality of bit sequences has been generated from the one transmission data sequence.

This application discloses an encoding method, an apparatus, a system, and a chip, and relates to the field of communication technologies. In the method, a block pair is sent through one serial channel, where the block pair includes a first block and a second block, a length of the first block is the same as a length of the second block, and the first block indicates a type of the second block. The type of the second block is indicated by the first block, and the second block does not need to include content indicating the type of the second block. Therefore, the second block can carry other content other than the content indicating the type of the second block, and the second block has high scalability. In addition, the length of the first block is the same as the length of the second block. Therefore, the first block and the second block may include a same quantity of bits of a same signal, or the first block and the second block include bits of different signals, but a quantity of bits of the signal included in the first block is the same as a quantity of bits of the signal included in the second block. Transmission of the block pair is performed through one serial channel, so that a quantity of pins of the serial channel may be small. The serial channel in the method may be implemented based on an MII. Therefore, the method may be applied to an MII scenario.

This application provides a data transmission method, apparatus, and system, and a device. The method includes: receiving, by a receive end, a Radio Link Control protocol data unit (RLC PDU); determining, by the receive end, whether the RLC PDU includes a complete service data unit (SDU) or an SDU segment, where the RLC PDU is transmitted in unacknowledged mode (UM); and transmitting, by the receive end to a Packet Data Convergence Protocol (PDCP) layer based on a result of the determining, the complete SDU or a complete SDU assembled by using the SDU segment. The data transmission method, apparatus, and system, and the device provided in this application implement data transmission in UM at an RLC layer in 5G.

The present disclosure relates to systems and methods for transmitting data over a wireless channel from a data transmitting node to a data receiving node in a communication system. In particular, the data transmitting node comprises second-layer processing circuitry for receiving, from a third layer, at least one second-layer service data unit, SDU, to be mapped onto a resource allocated for data transmission, and for generating a second-layer protocol data unit, PDU, including said at least one second-layer SDU and at least one second-layer control element, the at least one second-layer control element placed after any of the at least one second-layer SDU, and first-layer processing circuitry for receiving the second-layer PDU generated by the second-layer processing circuitry and mapping the second-layer PDU onto the resource allocated for data transmission. The data receiving node comprises first-layer processing circuitry for de-mapping at least one second-layer protocol data unit, PDU, from a resource allocated for data reception, and a second layer processing circuitry for receiving and parsing the second-layer PDU de-mapped by the first-layer processing circuitry, the second-layer PDU including at least one second-layer service data unit, SDU, and at least one second-layer control element, the at least one second-layer control element following any of the at least one second-layer SDU.

This invention discloses a high-efficiency photovoltaic inverter communication monitoring and conversion method and system, belonging to the field of communication monitoring service technology. The method and system include: S1, collecting and preprocessing link structure data and field feature data to construct a standardized communication transmission dataset; S2, analyzing the transmission delay of communication nodes at each level and dynamically adjusting the data encapsulation structure and primary / backup channel forwarding strategy; S3, assessing the risk of mismatch between the primary and redundant channels and triggering path switching and structural reorganization processes; and S4, comprehensively analyzing the delay and mismatch risk results to dynamically optimize the link rhythm distribution structure. This solves the problem that multiple encapsulation and decoding of inverter data transmission in different gateway levels easily introduces delay and distortion, and that existing systems lack an end-to-end link performance collaborative perception and optimization control mechanism from the edge to the cloud platform.