451results about "Transmission format adaptation" patented technology

Methods and apparatus are described for enhanced node communication within a wireless node network having nodes and a server. The method begins with a first node associating with a second node, and the first node capturing relevant node information. The first node transmits the relevant node information to the server via the second node operating as an intermediary for indirect communication with the server. A third node captures relevant node information and transmits the relevant node information to the server without using the second node as an intermediary or bridge to the server. Each of the first node, the second node, and the third node may be wireless transceiver-based nodes and respectively implemented as integrated circuits.

A data transmission method and a communication apparatus, relating to the field of communications, and capable of selecting, when a network element supports multiple data transmission protocols, a data transmission mode that enables efficient data transmission. In the method, a third network element receives first information used for indicating at least one data transmission protocol supported by a first network element, and thus a first data transmission protocol for data transmission with the first network element or for data transmission between the first network element and the third network element can be determined on the basis of the first information.

Methods and apparatus are described for enhanced node communication within a wireless node network having nodes and a server. A first subset of nodes transmits first data messages to the server without using an intermediary device where the first data messages include sensed data generated by the nodes of the first subset of the plurality of nodes about or around the nodes of the first subset of the plurality of nodes. A second subset of the plurality of nodes receives external data from the other of the nodes. The second subset of the plurality of nodes are intermediary devices that transmit the received external data to the server, wherein the received external data from the other of the nodes comprises sensed data about or around the other of the nodes.

Methods and apparatus are described for enhanced node communication within a wireless node network having nodes and a server. The method begins with a first node associating with a second node, and the first node capturing relevant node information. When the first node is in a first connectivity mode, the relevant node information is transmitted to the server via the second node operating as an intermediary for indirect communication with the server. When the first node is in a second connectivity mode, the first node transmits the relevant node information to the server without using the second node as the intermediary or bridge to the server. Each of the first node and second node may be wireless transceiver-based nodes and respectively implemented as integrated circuits.

The invention relates to an industrial quality inspection data cooperative transmission method driven by image recognition, in particular to the field of artificial intelligence, which analyzes video frames in real time through a lightweight neural network, accurately locates and extracts key areas and features in industrial product images, constructs a dynamic semantic scene graph to understand contents and divide priorities, and improves the quality inspection efficiency. The core of the method is that non-uniform intelligent coding is carried out on video streams according to semantic importance of contents, high-fidelity transmission of key information such as defects is ensured, non-key areas are greatly compressed to save bandwidth, scheduling is carried out in the transmission process according to priorities, confidence feedback based on a cloud recognition result is introduced, closed-loop control is formed, and high-fidelity transmission is realized. According to the method, the front-end analysis model, the coding strategy and the network path are adaptively optimized, so that low-delay and high-reliability visual quality inspection data transmission and accurate identification can be continuously and stably realized in a complex industrial network environment, and the overall efficiency and the intelligent level of online quality inspection are remarkably improved.

The invention relates to the technical field of power data acquisition, in particular to a power supply redundancy electric energy meter data acquisition method and system. The method comprises the following steps: acquiring a power grid voltage data sequence and calculating statistical characteristics, and acquiring standby power supply voltage and communication signal strength in real time; determining a drop amplitude according to the voltage change, evaluating a communication load in combination with the signal strength and the length of the data to be sent, and evaluating a power supply survival pressure index based on the drop amplitude, the communication load and the closeness degree of a current voltage value and a shutdown threshold value; calculating a voltage sequence variance to represent a data value, and performing suppression processing on the data value by using a survival pressure index to obtain a data transmission priority score; and comparing the score with a basic transmission threshold, if the score is greater than the threshold, waking up the radio frequency unit to send data, otherwise, discarding the data and controlling the equipment to sleep. According to the scheme, the data length and the signal quality are comprehensively considered, and the energy cost required for sending the current data packet is accurately estimated.

A spatial adaptive multi-user service modulation and demodulation method suitable for various channel environments is characterized in that an uplink channel is configured with multiple paths of general carriers and multiple paths of helicopter special carriers in a frequency division mode, and the general carriers support uplink adaptive information transmission of terminals of various types and sizes in an MF-TDMA (Multimedia Frequency-Time Division Multiple Access) system; the on-satellite demodulator obtains a modulation coding mode of a burst data segment by identifying mode word information in a physical layer frame header, and demodulates a corresponding mode; the carrier special for the helicopter uses a continuous carrier mode, and multi-rate channel error correction coding and decoding under rotor wing shielding are supported in a channel interleaving mode. Downlink transmission is carried out in a fixed time slot and free time slot time division mode, and downlink information transmission for universal multi-type terminals and helicopter terminals can be supported at the same time. Compared with a common spatial modulation and demodulation method, the modulation and demodulation scheme provided by the invention can support adaptive transmission of general services of multiple types of terminals and helicopter service information on both an uplink and a downlink by using one satellite-borne modem.

The disclosure relates to a communication technique and system for combining an IoT technology with a 5G communication system for supporting a higher data rate than a 4G system. The disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail business, security and safety-related service, and the like) on the basis of a 5G communication technology and an IoT-related technology. The disclosure provides a method and apparatus for effectively performing a header compression or decompression procedure in a next-generation mobile communication system.

A communication system includes a target unit provided in a vehicle and including at least one target unit processor and at least one target unit memory coupled to each other; and a communication tool coupled to the target unit for bidirectional communication and including at least one communication tool processor and at least one communication tool memory coupled to each other. The communication tool processor transmits certain information including first certain data and a first padding value to the target unit. The target unit processor determines whether the first padding value matches a preset specific padding value, and transmits abnormality information to the communication tool when the first padding value does not match the specific padding value. Upon receiving the abnormality information, the communication tool processor transmits the certain information including the first certain data and a second padding value different from the first padding value to the target unit.

The invention discloses a chirp interval modulation backscatter communication method and a chirp interval modulation backscatter communication system based on variable-length scrambling codes, which mainly solve the problems of high power consumption of backscatter labels and high system deployment cost in the prior art. According to the scheme, a sending end sends an environment LoRa signal; the backscattering label modulates information to be sent to an environment LoRa signal in a time interval modulation mode, and modulates a variable-length scrambling code to an anchor symbol; a receiving end performs frequency shift compensation on the backscattering signal by adopting a frequency shift compensation method, demodulates the backscattering signal by combining a sliding window with a variable-length scrambling code, intercepts a backscattering signal sample through the sliding window, and performs de-spreading and fast Fourier transform (FFT) on the signal in the window; the position of an anchor symbol is determined by detecting the maximum value of an FFT peak value, information sent by the backscattering label is recovered from the position of the anchor symbol, and data demodulation is completed. On the premise of keeping demodulation reliability, the power consumption of the tag is effectively reduced, the deployment cost of a backscatter communication system is reduced, and the method can be used for ultra-low power consumption Internet of Things communication.

This disclosure describes systems, methods, and devices related to enhanced connectivity. A device may receive a data payload and modulation and coding scheme (MCS) information for transmission. The device may select a low-density parity-check (LDPC) codeword size based on the data payload size and the MCS information. The device may encode the data payload into at least one LDPC codeword according to the selected LDPC codeword size. The device may transmit the encoded LDPC codeword using a wireless interface.

The invention belongs to the technical field of space communication protocol processing, and particularly relates to an intelligent frame packaging method and device for a satellite internet heterogeneous link. Comprising the steps that an IP packet is preprocessed and packaged into a CCSDS packet, and bytes are processed based on a general cycle to adapt to different link requirements; an insertion domain differentiation strategy and a multi-pointer cooperation mechanism are adopted to complete MPDU dynamic adaptation filling and cross-domain processing, and the cross-MPDU data splicing problem is solved through accurate boundary judgment and a differentiation filling strategy; fully effective or partially effective filling of the VCDU frame is realized through multi-pointer cooperation; a self-adaptive verification mechanism parallel to the packaging process is constructed, a WA-TOPSIS multi-attribute decision algorithm is fused, and an optimal verification strategy is selected according to multi-dimensional indexes; a bucket reset flow control algorithm based on a time interval is adopted, a credit overdraft and debt compensation mechanism is combined, and flow parameters are dynamically adjusted to avoid congestion; according to the method, the data transmission stability and the link utilization rate in a heterogeneous link environment can be effectively improved.

The invention provides a video adaptive transmission and reconstruction method and device based on end-cloud collaboration. The invention provides a camera end and server collaborative low-bandwidth key frame priority transmission and middle frame reconstruction method and device, which realize a collaborative mechanism of end-side semantic key frame intelligent labeling and cloud high-quality middle frame reconstruction, and adaptively switch transmission modes according to a real-time network state. And the video event integrity and the visual coherence in a low-bandwidth environment are effectively ensured.

Methods, systems, and devices for wireless communications are described. A unified transmission configuration indicator (TCI) framework may be implemented by a wireless communication system may support joint common TCI states for downlink and uplink channels or reference signals associated with communications between devices. A base station may transmit downlink control information (DCI) to a user equipment (UE) indicating the one or more TCI states and a scheduling for a downlink channel. The UE may transmit an acknowledgment message that is either an explicit acknowledgement or an implicit acknowledgment to confirm whether the one or more TCI states were successfully received in the DCI.

Disclosed are an access and transmission method, and a network-side device, a terminal and a storage medium, which are used for solving the problem in the related art of a collision in preamble parts. In the embodiments of the present application, pseudo-random information is added to preamble parts, and the preamble parts and data parts are sent by using resources configured on a network side, such that the preamble parts of different terminals can be made to be as different as possible by using the pseudo-random information, thereby avoiding the problem of multiple collisions being caused due to preamble parts of the terminals being the same.

The invention relates to the technical field of image transmission control, and discloses an image transmission control method and system for an aeronautical communication radio station, and the system comprises an image collection and preprocessing module, an intelligent compression and scheduling module, a transmission control and error correction module, and a reception decoding and evaluation module. Image data inside and outside an aircraft are collected in real time and preprocessed, including denoising, enhancement and format standardization, definition and compatibility of the image data are guaranteed, standardized preprocessed image data are generated, uniformity and high efficiency of subsequent transmission processing are guaranteed, and initial quality of image transmission is improved; an intelligent scheduling algorithm is adopted to arrange a transmission sequence according to the flight mission priority and the image content importance, the data compression and transmission sequence is dynamically optimized, different channel conditions are adapted, and the image transmission efficiency and real-time performance are improved.

This application provides a communication method and a communication apparatus. The communication method includes: A first network device sends a first downlink signal at first time. The first time is also time at which a second network device sends a second downlink signal, the first downlink signal includes first information, the second downlink signal includes second information, and a length of the first information is the same as a length of the second information. A first terminal device receives the first downlink signal, and sends a first uplink signal to the first network device at second time based on the first downlink signal. Correspondingly, the first network device receives the first uplink signal at the second time. The second time is also time at which the second network device receives a second uplink signal from a second terminal device, the first uplink signal includes third information, the second uplink signal includes fourth information, and a length of the third information is the same as a length of the fourth information. The communication method provided in this application can improve a coverage capability, and help improve communication efficiency.

The invention provides a wireless communication method and communication equipment. The method comprises the following steps: a first AP sends a first trigger frame; wherein the first trigger frame comprises first information and second information, the first information is used for instructing the second AP to perform multi-AP cooperative transmission on the first bandwidth, the second information is used for instructing the first STA to communicate with the first AP on the second bandwidth, and both the first bandwidth and the second bandwidth belong to the working bandwidth of the first AP. According to the invention, hybrid transmission of multi-AP cooperative transmission and single-AP transmission can be realized on the working bandwidth of the first AP. According to the method and the device, firstly, the bandwidth which cannot be subjected to multi-AP cooperative transmission can be utilized, so that the utilization efficiency of the frequency spectrum is improved; and secondly, limitation on the working bandwidth of the shared APs can be reduced, so that more diversified shared APs can participate in multi-AP cooperative transmission. And thirdly, the remaining bandwidth of the multi-AP cooperative transmission is not idle, so that the situation that the bandwidth is taken away by other APs or STAs due to the fact that the idle time of the second bandwidth is too long is avoided.

A first communication device that is configured to communicate with a second communication device having circuitry configured to obtain user data length information indicating the length of one or more data units of user data to be transmitted to the second communication device; obtain at least two transmission parameter sets each including transmission parameters for use in the transmission of the user data, the at least two transmission parameter sets having one or more different parameter values; determine, from the user data length information and the at least two transmission parameter sets, encoding parameters that are identical regardless which transmission parameter set is used for transmission of the user data; encode the user data into transmission data units according to the determined encoding parameters; and modulate and transmit the transmission data units to the second communication device according to one of the transmission parameter sets.

Embodiments of this application relate to a communication method, a communication apparatus, and a computer-readable storage medium. In the provided communication method, a first device generates a first physical layer protocol data unit PPDU and a second PPDU based on first packet extension PE duration and second PE duration that is less than the first PE duration. The first PE duration indicates additional PE duration provided by a predefined PE field required for the first PPDU, and the second PE duration indicates PE duration supported by the second PPDU. The first PPDU includes first padding bits and a target PE field. The second PPDU includes second padding bits and the target PE field. The target PE field corresponds to third PE duration that does not exceed the second PE duration. The first padding bits and the target PE field correspond to duration that is not less than the first PE duration. The first device sends an aggregate physical layer protocol data unit A-PPDU that includes the first PPDU and the second PPDU. In this manner, PE fields in the A-PPDU can provide sufficient additional processing duration for a receiving device while alignment of ends of the PE fields is maintained.

Provided in the embodiments of the present disclosure are a method and apparatus for transferring a C-value in a FlexE overhead frame. The method comprises: receiving a plurality of FlexE overhead frames, wherein C-values carried in the plurality of FlexE overhead frames change according to a regular sequence; acquiring the C-values in the plurality of FlexE overhead frames; and on the basis of a correct C-value in at least one FlexE overhead frame and the regular sequence of the C-values, determining a FlexE overhead frame on which a C-value indicating the switching of a client calendar is located. By means of the present disclosure, the problem of how to reliably transfer a C-value when a FlexE protocol code block is modified into a 257b code block is solved.

The embodiment of the invention discloses a data transmission method, a data transmission device and a data transmission system, which can be compatible with the existing 400ZR +, 800ZR and 800ZR + DSP (Digital Signal Processor) framing scheme, are more beneficial to hardware implementation, and can also be suitable for scenes adopting multi-wave or multi-subcarrier transmission in the future, such as 800Gbps multi-subcarrier transmission adopting QPSK (Quadrature Phase Shift Keying) modulation, 1.2 Tbps multi-subcarrier transmission adopting 16QAM (Quadrature Amplitude Modulation) modulation and 1.6 Tbps multi-subcarrier transmission adopting 16QAM modulation. And even transmission scenes with higher speed such as 2.4 T / 3.2 T and the like can be realized. The method comprises the steps that W data frames are sent, in one polarization direction, the number of symbols included in any data frame is 87552, each data frame comprises 12 subframes, the number of symbols included in each subframe is 7296, and W is an even number.

A resource unit indication method and apparatus, and a storage medium, where the method includes: an access point (AP) sending a physical protocol data unit (PPDU) to a plurality of stations (STAs), where a transmission bandwidth of the PPDU is divided into M subblocks, M is an integer greater than 1, the transmission bandwidth is greater than or equal to 80 megahertz (MHz), the PPDU includes M first fields, the M first fields are in a one-to-one correspondence with the M subblocks, the first field is transmitted on a corresponding subblock, and the first field is used to indicate a resource unit (RU) allocated by the AP to at least one of the plurality of STAs.

This invention relates to the field of UAV communication technology, and particularly to a method for UAV environmental monitoring and data processing supported by edge computing. The method includes: acquiring time-series data streams collected by multi-source environmental sensing devices, compressing and processing them based on a linear projection compression model to obtain compressed feature vectors; calculating communication costs based on current heterogeneous network conditions and energy constraints using a preset communication cost function; and executing different data processing strategies based on different communication costs. This invention achieves efficient edge compression in embedded resource-constrained scenarios; realizes resource-aware data upload control through the communication cost function; and reconstructs the Kalman filter matrix structure based on a Bayesian state fusion method using compressed feature space, effectively supporting local state estimation and uncertainty control, and triggering immediate warnings when environmental indicators exceed limits, effectively enhancing the system's risk perception and response capabilities.

Embodiments of the present application provide a communication method and system, and a related device. The method comprises: a transmit end determines a first symbol sequence the length of which is L and which corresponds to each OOK ON symbol in an obtained OOK symbol sequence, and generates a second symbol sequence the length of which is P (greater than L) and which corresponds to each OOK ON symbol, the first symbol sequence being located at a first position in the second symbol sequence, and the first position corresponding to N subcarriers within a bandwidth of a first signal; and on the basis of the second symbol sequence, the transmit end executes a mathematical transformation operation, generates a third symbol sequence the length of which is K (greater than P), and on the basis of N symbols located at a second position in the third symbol sequence, generates and sends a first signal, the second position corresponding to the N subcarriers. The transmit end places the first symbol sequence corresponding to each OOK ON symbol at a first position corresponding to N subcarriers, which can effectively reduce the distortion caused by frequency domain windowing processing on the original OOK symbol sequence, thereby ensuring sequence detection performance of a receive end.

The invention belongs to the technical field of digital image transmission, and particularly relates to a digital image transmission system based on ultra-low time delay, which comprises the following steps: firstly, acquiring digital image data in a scene in real time by using a high-frame-rate and low-noise image sensor, and transmitting the acquired original image data; then, carrying out preprocessing operation on the collected original image data; then, a deep neural network model is utilized to adaptively adjust coding parameters and a coding mode according to the content characteristics of the image and the real-time transmission bandwidth condition; on the basis, the adaptive lightweight coding module is arranged, a complex inter-frame prediction algorithm in a traditional coding standard is abandoned, a block-level differential coding mode is adopted, and coding parameters and modes are adaptively adjusted according to image content characteristics and real-time transmission bandwidth; the method has the advantages that the coding delay is effectively reduced, and the high-real-time scene coding requirement is met.

The invention discloses a stable video transmission method and system in a high-speed moving scene and electronic equipment, and relates to the technical field of video transmission and communication, and the method comprises the following steps: obtaining the moving state data of a video transmitting end, and judging whether the video transmitting end enters a high-speed moving transmission state or not; after entering a high-speed mobile transmission state, acquiring current network link state data, and determining a corresponding link risk interval; generating a corresponding transmission control instance according to the link risk interval; performing structured redundancy construction on the video data according to the transmission control instance and completing video transmission; according to the invention, through prospective motion determination and structured redundancy, the problem of unstable video transmission under high-speed movement is solved.

Provided are a communication method and device, relating to the technical field of communication, the method comprising: a first UWB device can determine the format of a PPDU sent by a second UWB device according to the device type of the first UWB device and the type of the second UWB device, and the type of the second UWB device is indicated by first indication information, which indicates that the corresponding PPDU format can be determined between the first UWB device and the second UWB device without a complicated interaction process, i.e. the interaction process of negotiating the PPDU structure is simplified, and thus the communication delay can be reduced.

Embodiments of the present disclosure provide a data transmission method, device, apparatus, and storage medium applicable to a terminal. The method includes performing segmentation and bit padding processing on encoded bits to obtain K bit segments, where the K bit segments include M encoded bit segments and K - M padding bit segments, K and M are positive integers, and K is greater than M; performing interleaving processing on the K bit segments in segment units; modulating each of the encoded bit segments after the interleaving processing into one or more data symbols to be transmitted, and modulating each of the padding bit segments after the interleaving processing into blank symbols; and transmitting the data symbols and the blank symbols to a network device.