3033results about "Forward error control use" patented technology

The invention discloses an Internet of Things data transmission optimization system based on intelligent routing, and relates to the technical field of data transmission optimization. The heterogeneous network access module supports adaptive switching of multiple protocols such as 5G, NB-IoT and LoRa, and monitors link quality; intelligent routing decision selects an optimal path by means of deep reinforcement learning, and end-to-end delay is reduced; data distribution scheduling split data streams are transmitted in a multi-path parallel mode, and forward error correction is combined to guarantee reliability. The network state prediction uses an LSTM to predict bandwidth, and a route is adjusted in advance; the secure transmission integrates iris authentication and dynamic encryption. According to the invention, efficient, reliable and secure transmission is cooperatively realized, energy collection and dormancy strategies are combined, the equipment endurance is greatly prolonged, the network energy consumption is reduced, and the method is suitable for industrial control, telemedicine and other scenes with high requirements on real-time performance and reliability.

The invention discloses an electronic lead seal automatic detection method applied to logistics tracking, and relates to the technical field of Internet of Things safety monitoring. The problems of packaging data loss, tampering risk increase and real-time monitoring failure caused by wireless communication signal interference, transmission delay and state updating lag of an existing electronic lead seal are solved. The method comprises the following steps: fusing multi-physical field sensing data through a space-time correlation sampling algorithm, and constructing an anti-interference characteristic matrix; evaluating communication quality based on the dynamic probability network model, and triggering a multi-path fragmentation concurrent transmission strategy to avoid signal attenuation; a hybrid reasoning model is deployed at an edge end to screen key event data, and the transmission efficiency is optimized in combination with differential coding and an IEEE 1588 clock synchronization mechanism; the cloud end adopts a space-time diagram fusion analysis model to carry out cross-modal abnormal association scoring, corrects misjudgment and updates an edge model; according to the invention, the communication reliability, the real-time transmission efficiency and the anomaly detection precision of the lead sealing state data in a complex environment are obviously improved.

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.

According to the packet loss prevention data transmission method and device, the equipment and the storage medium provided by the invention, the network index data of the current network is acquired in response to the data transmission instruction; inputting the network index data into a network state prediction model to obtain a prediction result of the current network state; determining an FEC redundancy strategy according to the prediction result; according to the FEC redundancy strategy, performing redundancy coding on to-be-transmitted data to obtain a redundancy data packet; and sending the data to be transmitted and the redundant data packet to a target receiving end. According to the predicted network state, the number of redundant data packets can be dynamically adjusted, unnecessary redundant data transmission is reduced, and the bandwidth utilization rate is improved. Unnecessary bandwidth waste is reduced through adjustment of dynamic redundancy coding, it is ensured that enough fault-tolerant capacity is provided when the network is unstable, data integrity is effectively ensured, and meanwhile audio and video transmission fluency and stability are improved.

Apparatuses and methods for monitoring indications for physical downlink control channels (PDCCHs) in full-duplex (FD) systems. A method includes receiving a set of discontinuous reception (DRX) parameters associated with a subband full-duplex (SBFD) configuration and receiving a first PDCCH that provides a downlink control information (DCI) format. The DCI format includes a wake-up indication field enabling or disabling receptions of a second PDCCH, in a DRX on-period, for a symbol or a subband type. The method further includes selecting, based on the wake-up indication field, the symbol or the subband type for receptions of the second PDCCH and receiving, based on (i) the selected symbol or subband type and (ii) the set of DRX parameters, the second PDCCH at a first occasion in a DRX on-duration or during a DRX active time. The first occasion is after reception of the first PDCCH and before an end duration.

Embodiments of the present disclosure relate to methods, devices and computer storage media for communication. According to embodiments of the present disclosure, a terminal device transmits, to a network device, a first hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to a first downlink control information (DCI) in a first physical downlink control channel (PDCCH), wherein the first DCI indicates a first transmission configuration indicator (TCI) state. If a condition is fulfilled, the terminal device applies the first TCI state. In this way, the terminal device understands when and / or whether to apply the indicated TCI state.

The disclosure pertains to methods and apparatus for enabling single DCI scheduling of multiple cells. A method implemented in a wireless transmit / receive unit (WTRU), includes receiving, by the WTRU, a single downlink control information (DCI). The method additionally includes determining, by the WTRU, scheduling of multiple cells based on the single DCI. The method also includes performing wireless communications, by the WTRU, based on the determination.

The invention relates to the technical field of audio playing optimization, and discloses a low-delay multi-room audio playing optimization method and system, a storage medium and equipment, and the method comprises the steps: building a global time synchronization system based on a precision clock protocol in a playing equipment cluster, and enabling all playing equipment to operate based on a unified time reference; monitoring network state parameters in real time, dynamically calculating and adjusting the audio buffer depth of each playing device based on the monitored network quality, and obtaining audio data in advance according to the playing progress and the network state; generating a global playing timestamp according to the global time synchronization system, and controlling all playing devices to perform synchronous starting and progress control of audio playing based on the global playing timestamp; a transmission strategy of audio data is dynamically optimized based on real-time network state parameters, packet loss recovery and bandwidth adaptation are achieved, sub-millisecond multi-room audio synchronous playing is achieved, and meanwhile performance parameters can be automatically optimized according to different network environments and hardware configurations.

The invention discloses a data access method based on an industrial internet and an industrial internet integrated system, and the method comprises the steps: collecting real-time operation parameters, packaging the parameters into an information packet, recognizing nodes by an edge gateway, dynamically discovering a model by an edge node, evaluating the nodes to generate availability scores, verifying the consistency of data, and recombining the data to form a complete unit. And distributing to a corresponding processing queue to analyze and extract features. According to the system, through an edge node dynamic discovery model and a data consistency verification algorithm, in combination with industrial internet parameters, collaborative optimization of node dynamic discovery and data verification is achieved, all units are connected and interacted through an industrial Ethernet bus, data access reliability and real-time performance are improved, and the system is suitable for data processing requirements in industrial internet complex scenes.

The invention relates to the technical field of Internet of Things communication, and provides a low-power-consumption semiconductor communication method based on Internet of Things, which comprises the following steps: acquiring temperature, electromagnetic interference intensity and signal attenuation coefficient data through a multi-mode sensor node, and generating an original environment data set; performing dynamic noise classification on the original environment data set, dividing noise levels and marking noise types; performing hierarchical processing on the data by adopting a multi-stage self-adaptive noise reduction algorithm to generate a preprocessed data set; extracting dynamic characteristic parameters of a communication channel, constructing an energy efficiency prediction model, and dynamically calculating a combination of optimal transmitting frequency, power and modulation order; generating a multi-system modulation signal, superposing a dynamic coding strategy, and adjusting the symbol block length and the error correction code density; and the receiving end analyzes the signal quality index, feeds back the signal quality index to the transmitting end to optimize the parameters and updates the energy efficiency prediction model. According to the invention, the energy efficiency ratio and the anti-interference capability of the Internet of Things communication system can be improved.

Methods and systems for physical layer network coding based on two-dimensional (2D) joint coding are described. In some methods, first and second packets are obtained. A set of one or more cross-packet check blocks is generated, where each cross-packet check block is generated based on a set of cross-packet bits including at least one bit from each of the first and second packets. At least one cross-packet check block is transmitted to a first communication node.

The deep joint source channel coding method comprises the following steps: a sending end obtains a first semantic feature of a first image, and performs constellation mapping modulation on the first semantic feature to obtain a first initial constellation point; the sending end extracts semantic information of the first initial constellation point, generates a rotation angle corresponding to the semantic information, and rotates the first initial constellation point according to the rotation angle to obtain a first rotation constellation point; the sending end generates a real part interleaving matrix and an imaginary part interleaving matrix based on the first rotating constellation point and the real part and the imaginary part of the channel state information, resorts the real part and the imaginary part of the symbol sequence respectively and then recombines the real part and the imaginary part into a complex signal to obtain a first interleaving signal; the sending end transmits the first interleaved signal to a receiving end through a fading channel, and the receiving end receives a second interleaved signal; the receiving end performs semantic reconstruction decoding on the second interleaved signal to obtain a second image; or, the receiving end performs semantic classification decoding on the second interlaced signal to obtain a second image category.

A communication system includes: a communication terminal capable of encoding data by using an encoding model that encodes and outputs data that has been input; and a base station including a central unit and one or more distributed units, the distributed units decoding data encoded with the encoding model by using a decoding model that, when encoded data is input, decodes and outputs the data, and the central unit or the distributed units perform machine learning by using learning data including data transmitted by the communication terminal without performing encoding to generate the encoding model and the decoding model, and notify the communication terminal of a learning result of the encoding model.

The invention relates to the technical field of audio and video emergency transmission, and discloses an audio and video low-delay return method and system in an extreme environment. The method comprises the following steps: acquiring original multi-modal data of audio and video acquisition equipment in a target area, and analyzing a data state of the original multi-modal data; and meanwhile, available network transmission links are monitored, and the quality is evaluated. Self-adaptive coding parameters are generated in combination with the link quality and the data state, dynamic coding is executed on original data, and a coding stream suitable for redundant transmission is formed. And carrying out cooperative distribution transmission based on the network link set and the coded stream to generate return data. According to the generation process, a device and energy management instruction is formed and issued to the acquisition and relay device. According to the method, the network state and the content characteristics are optimized in a dynamic coding link in a collaborative manner, and the audio and video quality, the real-time performance and the system energy efficiency which are transmitted back in an extreme environment are improved through a feedback closed loop for transmitting a result to equipment management.

Signaling that indicates information associated with variable length source coding at a first communication device is communicated between a first communication device to a second communication device in a wireless communication network. Variable length source coded data to which channel coding has been applied is also transmitted by the first communication device to the second communication device, and received from the first communication device by the second communication device. This type of source coding approach may be particularly useful for low entropy signals.

A wireless communication apparatus and method using probabilistic constellation shaping in connection with modulation. A wireless transmission device may determine a sequence of amplitude symbols from a sequence of information bits using a distribution matcher (DM) configured for probabilistic amplitude shaping. The device may further apply error correction coding to encode an information block corresponding to at least a portion of the sequence of amplitude symbols. And the device may generate a sequence of output symbols for transmission based on the encoded information block. The device may apply interleaving to one or more of the sequence of amplitude symbols, the information block, the encoded information block, or a combination of the sequence of amplitude symbols and the encoded information block, for the generating of the sequence of output symbols.

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.

A mechanism for time domain resource allocation for downlink shared channel, in which the time domain resource is allocated according to CORESET configurations when SS / PBCH block and RMSI CORESET are multiplexed with Type 1, Type 2 or Type 3 pattern.

The invention belongs to the technical field of air traffic management, and discloses a control tower and flight guarantee command room decision instruction transmission method based on edge nodes, priorities are distributed for instructions through an intelligent grading model, the high-priority instructions can reserve resources in advance and are transmitted preferentially, the resources can be preempted in emergency, and the control tower and flight guarantee command room decision instruction transmission efficiency is improved. A multi-path transmission strategy is automatically switched when a certain path fails, data integrity is ensured in combination with fragment verification and block chain recording, instruction loss caused by a single point of failure is avoided through edge-cloud redundant backup, and the problems that instruction transmission is prone to interference and insufficient in safety in a traditional method are solved; through intelligent priority grading, resources are inclined to high-priority instructions, resource waste is avoided, a collaborative scheduling mechanism of an edge node cluster can dynamically adjust resource allocation according to a real-time load, and a transmission quality feedback and adaptive optimization strategy is continuously optimized, so that the system can still efficiently process a large number of instructions in a flight take-off and landing intensive period.

The invention discloses a fault-tolerant data transmission method and communication equipment. The data transmission method comprises the following steps: second equipment sends a plurality of data units to first equipment; after the first device receives the plurality of data units, first feedback information can be sent to the second device according to the number of error data units which are wrongly received in the plurality of data units and a first threshold value, and the first feedback information indicates that the error data units are wrongly received; the second device may perform data retransmission based on the first feedback information. In the application, the second device does not need to retransmit all the error data units, but retransmits the error data units which need to be retransmitted and are determined according to the number of the error data units and the first threshold value, and a certain fault-tolerant space is provided, so that the retransmission times can be reduced, and the transmission efficiency can be improved.

The invention discloses an anti-attack interleaving method and device for communication information. The method comprises the following steps: acquiring an information sequence to be transmitted; performing statistical analysis processing on the to-be-transmitted information sequence to obtain a statistical information set; carrying out detection modeling processing on the communication channel of the information sequence to be transmitted to obtain channel dimension information; and performing interleaving parameter calculation processing on the statistical information set and the channel dimension information to obtain an interleaving parameter information set. According to the invention, the problems of anti-interference effect and influence on the security of the communication system caused by fixed parameters of the interleaving method in the current communication system are solved.

The invention belongs to the technical field of information and communication, and relates to an active user detection and data decoding method of an asynchronous massive machine type communication system. Aiming at the problem that the detection and estimation performance is reduced due to unknown user time delay in asynchronous transmission, the method comprises the following steps: initial estimation and preprocessing: detecting initial active users and transmission time delay thereof through correlation peaks, and whitening received signals; the iterative joint detection and channel estimation module is used for iteratively updating channel information and data symbol information for multiple rounds based on a factor graph and a message passing algorithm; the data decoding module is used for decoding data based on a soft decision device; the detection and decoding performance is improved by transmitting external information among the modules; and the time delay parameter updating adopts a greedy search algorithm to obtain the optimal time delay. According to the method, the active user detection rate, the channel estimation precision and the data decoding accuracy under the condition that the receiving and transmitting ends are completely asynchronous are improved.

The invention relates to the technical field of Ethernet communication, in particular to an automatic negotiation and link training architecture based on an FPGA and a control method, and the architecture comprises a PMA physical medium connection module which comprises a plurality of channels, and each channel is provided with an AN / LT unit; the SWH exchange and processing module is used for receiving a plurality of channel data and distributing the channel data to the corresponding PCS physical coding sub-layer modules so as to carry out coding operation and decoding operation on the channel data; the AN auxiliary logic module and the AN / LT channel control logic module are mutually independent from the PCS physical coding sub-layer module, the AN auxiliary logic module is used for assisting the automatic negotiation function of an AN / LT unit, and the AN / LT channel control logic module is used for controlling the automatic negotiation and link training process of the AN / LT unit and channel rebinding processing. The invention provides a more flexible AN / LT architecture, and the capability of coping with complex and changeable working conditions is improved.

Apparatuses, methods, and systems are disclosed for enhanced UL repetition indication and repetition procedure provides one or more signaling mechanisms to support dynamic PUCCH repetition factor indication. A User Equipment apparatus includes a transceiver and a processor that receives from a network, a Radio Resource Control (“RRC”) configuration for one or more physical uplink control channel (“PUCCH”) resources sets and corresponding one or more PUCCH resource configurations for each of the configured PUCCH resource sets, where one or more of the corresponding PUCCH resource configurations indicate a number of slots over which PUCCH can be repeated and receives from the network a downlink control information (“DCI”), where the DCI includes a PUCCH resource indicator (“PRI”) to indicate one of a RRC configured PUCCH resources within a PUCCH resource set and a corresponding number of slots for PUCCH repetition.

A wireless UE that operates in a sidelink unlicensed band in a wireless communication system may include at least one antenna configured to transmit and receive one or more wireless signals, at least one processor, and a memory configured to store instructions for the wireless UE when executed by the at least one processor, and the operation of the wireless UE may include determining the number of OFDM symbols available for PSSCH transmission; determining the number of coded symbols of 2nd SCI based on the number of OFDM symbols available for PSSCH transmission; determining the number of resource elements of 2nd SCI based on the number of coded symbols of 2nd SCI; and mapping the 2nd SCI to radio resources based on a parameter related to a starting OFDM symbol location and a parameter related to the number of OFDM symbols and transmitting the same to another wireless UE.

This disclosure provides methods, components, devices and systems for enhanced long range physical layer protocol data unit design and numerology. Some aspects more specifically relate to enhanced long range physical layer protocol data unit design and numerology. A first wireless device may transmit a first portion of a preamble of a PPDU and a second portion of a preamble including at least a first ELR mark field, a second ELR mark field, and an ELR modulated portion. The first ELR mark field and the second ELR mark field both may be modulated according to a quadrature-binary phase-shift keying modulation scheme. The first wireless device may modulate a portion of the PPDU, including at least an ELR signaling field and an ELR data field, according to a modulation scheme selected based on a target data rate and associated with a duplication procedure for the portion of the PPDU.

A UE configured for operation in a 5G NR network may decode RRC signalling from a generation gNB that includes a PUCCH-Config IE to configure the UE with a number of slots for PUCCH repetition. The UE may decode a DCI format scheduling dynamic PUCCH repetition per PUCCH resource when the DCI format indicates a PUCCH resource for the PUCCH repetition. The PUCCH resource may include a repetition number of slot and may be indicated by the DCI format comprising a starting symbol index and a number of symbols for repetition of the PUCCH within each of the slots of the number of slots. If the DCI indicates the PUCCH resource that includes the repetition number of slots, the DCI format schedules dynamic PUCCH repetition and the UE repeats the scheduled PUCCH transmission in accordance with the repetition number of slots per the PUCCH resource indicated by the DCI format, otherwise, the UE repeats the scheduled PUCCH transmission in accordance with a repetition number indicated by the PUCCH-Config IE. Each repetition of the PUCCH may have the same first symbol corresponding to the starting symbol index in each slot and the same number of consecutive symbols in each slot corresponding to the number of symbols.

According to one aspect of the present disclosure, there is provided a terminal including a control unit that determines a Modulation and Coding Scheme (MCS) and a number of repetitions from an MCS field in an uplink grant for repetitive transmissions of an uplink data channel for retransmission in a random access procedure, and a transmission unit that repeatedly transmits the uplink data channel for retransmission in the random access procedure in accordance with the MCS and the number of repetitions.