52 results about "Packet communication" patented technology

A system as discussed herein includes a communication management resource operative to manage wireless communications in a network environment. The communication management hardware receives feedback indicating signal quality, and operating channel of wireless access points receiving wireless communications from each other in the network environment. The communication management resource groups the wireless access points into one or more clusters based on the received feedback indicating the signal quality. Based on the grouping, the communication management resource further assigns different wireless channels for use by respective wireless access points in each cluster of the multiple clusters.

This application relates to isolated data interfaces for containers deployed to compute nodes. Generally, techniques are described for deploying a logically related group of one or more containers ("jars") that support the Data Plane Development Kit (DPDK) to support fast path packet communication over a data channel between a virtual router and a jar. In one example, a computing device includes a virtual router that includes processing circuitry and is configured to implement a virtual network in a computing infrastructure that includes the computing device to enable communication between virtual network endpoints connected via the virtual network. The computing device includes a jar that contains a containerized application, where the virtual router and the jar are configured to create a Unix domain socket using a file system resource that is accessible by the jar and by the virtual router and is not accessible by any other jar deployed to the computing device.

A data packet communication system is described, which can be implemented as a physical push based data packet communication device, such as a router, a gateway, or a controller circuit coupled to a router or a gateway adapted for controlling data packet communications. The data packet communication system is adapted to evaluate network capacity of each of the multiple networks at the time of a monitored communication event and assigns data packets accordingly.

Systems, methods, and apparatuses are described for detection and / or analysis of cyber threats based on updated cyber threat intelligence associated with cyber threats. Packet filtering output data such as logs of packet communications and / or copies of packets may be generated based on first cyber threat intelligence associated with a cyber threat. Updated criteria based on subsequent updated cyber threat intelligence may then be applied to the packet filtering output data.

A streamlined input / output (IO) device wireless communication packet polling and reception system of a wireless radio system, such as a wireless communication dongle, at an information handling system may comprise a controller to execute code instructions to transmit with the wireless radio system an initial polling packet initially allotting to a paired wireless IO device the data packet number and data packet transmission time slots for a first data packet communication frame, the controller to switch the wireless radio system to receive during the first data packet communication frame the initially allotted number of data packets at the initial allotted data packet transmission time slots from the wireless IO device, and the wireless radio system to transmit an updated polling packet acknowledging receipt of the transmitted number of data packets and instructing the wireless IO device for the allotted data packet number during a second data packet communication frame.

The application discloses a resource allocation method and system in a UAV-assisted heterogeneous network based on short packet communication, and the method comprises the following steps: constructing a UAV-assisted heterogeneous network system, wherein the system comprises a base station, a UAV, a plurality of Internet of Things devices and a plurality of pairs of D2D devices; constructing an optimization problem with the target of maximizing the minimum effective information amount received by the Internet of Things devices in the whole system; fixing the UAV position and the channel allocation strategy, the block length allocation strategy and the channel allocation strategy, the block length allocation strategy and the UAV position respectively, converting the optimization problem into three sub-problems; adopting a two-layer iterative algorithm to jointly optimize the block length allocation strategy, the UAV position and the channel allocation strategy until the problem reaches the optimum. The application approximately converts a complex mixed integer non-convex original problem into an easy-to-handle problem, and proposes an alternating iterative algorithm, so that the maximization of the minimum effective information amount of the whole system is achieved.

The invention discloses an active monitoring method based on short packet communication, and the method comprises the steps: firstly, building a communication system model which comprises monitoring equipment, a target transmitting end and a target receiving end, transmitting a power-adjustable artificial noise signal by the monitoring equipment, and actively interfering a communication link between the target transmitting end and the target receiving end; then, an optimization problem is established by taking maximization of the average effective monitoring rate of monitoring equipment as an optimization target, and meanwhile, the condition that the average decoding error rate of a target receiving end is maintained at a preset target value is taken as a constraint condition; and finally, solving an optimization problem, determining an optimal transmission rate and corresponding artificial noise transmitting power, and guiding monitoring equipment to perform optimal active monitoring. On the premise of ensuring the communication quality of the target link, a more favorable channel condition is created for the monitoring party, and the monitoring performance is remarkably improved compared with the traditional interference-free passive monitoring scheme and the active monitoring scheme with fixed interference power.

The invention mainly discloses an intelligent fan which is provided with a control chip and at least one electric connector, and the control chip is configured to execute a mode switching operation based on signal detection after the electric connector is electrically connected to a control box. Therefore, the intelligent fan is switched to a general fan control mode or a data packet communication mode according to the type of the control box. Moreover, in the general fan control mode, after setting of a priority identification code or a non-priority identification code of the intelligent fan is completed by the control chip, the intelligent fan is switched back to the general fan control mode. On the other hand, in the data packet communication mode, data packet transmission is carried out between the control box and the intelligent fan based on a communication protocol, and in this way, rotating speed control, rotating speed monitoring and fan function setting of the intelligent fan are achieved.

This disclosure proposes a short packet communication method for UAV relay systems based on NOMA technology. The method includes the following steps: establishing a system model of the UAV relay system, which includes a control terminal, UAVs, and multiple target users; short packet communication transmission between the control terminal, UAVs, and multiple target users based on NOMA technology; and, based on the system model, jointly optimizing the total data packet length, UAV flight position, and UAV power allocation in the short packet communication transmission to obtain the minimum effective packet error rate for the target users. The method proposed in this disclosure can effectively reduce the communication latency of short packet transmission in UAV relay systems and the effective packet error rate at the target users.

The application discloses a STAR-RIS assisted short packet communication broadcast system optimization method based on TD3, utilizes statistical channel state information of a broadcast system under a Rayleigh fading channel to design a passive beamforming joint optimization method based on a double-delay deep deterministic policy gradient algorithm, and improves the performance of the short packet communication broadcast system. Specifically, firstly, a transmission reflection type reconfigurable intelligent surface assisted short packet communication broadcast system model is constructed, including system composition, channel modeling, and introduction of a coupling phase shift model of a physically achievable transmission reflection type reconfigurable intelligent surface; secondly, a base station end active beamforming and transmission reflection type reconfigurable intelligent surface passive beamforming joint optimization method based on a double-delay deep deterministic policy gradient algorithm is constructed by utilizing statistical channel state information to maximize the minimum value in the average reachable rate of each user, so that all users can obtain good communication quality, and high-reliability low-latency broadcast communication is realized.

The present application relates to a kind of optimization method of IRS assisted short packet communication broadcast system based on DDPG, to improve the performance of broadcast system.The present application first constructs the IRS assisted downlink broadcast system model, including system composition and channel modeling and introducing the actual phase shift model to simulate the hardware limit of IRS;Second, according to the statistical channel state information, the optimization objective of system model is established;Then, the DDPG reinforcement learning model is constructed, and the phase shift of IRS and the beamforming vector at BS are optimized by training;Finally, the optimized parameters are used for minimum common block length analysis;To improve the performance of multi-user broadcast communication system.

A network communication device for connecting to a computer, comprising a host processor, host memory, and at least one first and one second root port. The device includes a network port for connecting to a packet communication network and a first and a second host bus interface for connecting, via a first and a second peripheral component bus, to the respective first and second root ports.A packet processing logic is coupled between the network port and the first and second host bus interfaces and includes a first and a second memory direct access (DMA) functional unit which are configured to read data from the host memory for transmission via the network port from the respective first and second root ports, while the network port is exposed to the host computer only via the first host bus interface.

Digital Beam-Formed Data Packet Communication Across Serially-Connected Transceivers by receiving modulated RF signals at a plurality of signal ports of each transceiver IC in a subarray of serially connected transceiver ICs and generating one or more frequency domain digital data packets of subcarrier IQ data associated with each signal port by demodulating each modulated RF signal from each signal port using an FFT processor within the respective transceiver ICs, and forming a plurality of combined frequency domain digital data packets from the transceiver ICs using a set of serial data links between the transceiver ICs of the subarray of serially connected transceiver ICs; and transmitting the plurality of combined frequency domain digital data packets from the subarray of transceiver ICs to a beamformer processor.

This invention discloses a power grid communication protocol encoding and decoding method based on homomorphic mapping and multi-dimensional matrices. The method includes: collecting protocol-related parameters and constructing an original data feature set through a smart grid homomorphic signature encryption data transmission platform; forming a three-dimensional original matrix through multi-dimensional matrix mapping; calling a sensor-integrated power semantic short packet communication model to complete semantic extraction and short packet encapsulation; achieving encryption and signature encryption binding using a multi-dimensional matrix homomorphic signature encryption encoding and decoding model; adapting transmission resource allocation based on a multi-timescale heterogeneous resource collaborative optimization algorithm; and restoring the original data at the receiving end through inverse mapping decryption, signature encryption verification, and semantic parsing. The method refines the semantic processing, signature encryption, and resource scheduling processes step-by-step, integrating the core functions of multiple models to achieve semantic adaptation, secure transmission, and resource optimization collaboration in power grid communication protocol encoding and decoding, adapting to the communication needs of multiple devices and scenarios in smart grids.

This invention discloses a source-channel joint coding scheme for short packet communication. The scheme includes: at the transmitting end, firstly, performing two-stage classified enumerative (CE) coding on the message sequence u to be transmitted to obtain a variable-length description sequence (w). u i u ), where w u Indicates the type of the message, i u This indicates the order of message u within this type class; subsequently, the variable-length sequence (w) will be... u i u After multi-rate matching channel coding, a fixed-length transmit codeword c is obtained. During modulation, transmission energy is allocated according to the channel code rate, with low-rate transmit codewords receiving low transmission energy. At the receiving end, type-specific test decoding is used to recover the transmitted message. For a given type, the corresponding channel code decoding is performed first, followed by CE decoding, ultimately yielding an estimate of the message sequence. This invention has a significant coding gain compared to existing schemes, and its performance can approach the source-channel joint coding bound under finite length conditions.

The invention relates to a network communication device. A network communication device for connecting to a computer comprising a host processor, a host memory, and at least a first root port and a second root port. The apparatus includes a network port for connection to a packet communication network, and a first host bus interface and a second host bus interface for connection to a first root port and a second root port, respectively, through respective first and second peripheral component buses. Packet processing logic is coupled between the network port and the first and second host bus interfaces, and includes first and second direct memory access (DMA) engines to read data from the host memory via the first and second root ports, respectively, for transmission over the network port, and meanwhile, the network port is exposed to the host computer only through the first host bus interface.

The invention relates to a method for maximizing the average secrecy throughput in a short packet communication system assisted by an unmanned aerial vehicle (UAV). The method comprises the following steps of: firstly, selecting a short packet communication system; the method maximizes the average confidential throughput of all users by jointly optimizing user scheduling, transmit power, transport block length, and UAV trajectory. Firstly, an original problem is converted into four sub-problems of user scheduling optimization, power distribution optimization, block length selection optimization and unmanned aerial vehicle trajectory optimization. In order to solve the non-convex subproblem of unmanned aerial vehicle trajectory optimization, an improved particle swarm optimization (PSO) algorithm is adopted to search for an optimal or suboptimal UAV flight path. According to the method, under the optimization framework of overall block coordinate descent (BCD), other sub-problems are solved by means of methods such as continuous convex approximation (SCA), and the like, and therefore, the method can be used for solving the sub-problems of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD) of the block coordinate descent (BCD). According to the method provided by the invention, the communication safety performance of all users in the UAV-assisted short packet communication system can be improved, and a new design thought and optimization method are provided for the application of the UAV in a time delay sensitive wireless communication scene.

The application discloses a method for short packet communication assisted by a transmissive and reflective intelligent reflecting surface under electromagnetic interference. The transmissive and reflective intelligent reflecting surface assists a multi-antenna wireless access point in transmitting short packet signals to two single-antenna users under electromagnetic interference to realize high-reliability and low-latency communication. Firstly, based on statistical channel state information, under the phase constraint condition of the transmissive and reflective intelligent reflecting surface, a primary and secondary phase configuration strategy is adopted to deduce the probability distribution characteristics of end-to-end channel gains between an interference source, the wireless access point and the two users. Secondly, the statistical characteristics of decoding signal-to-interference-and-noise ratios at the two users are determined under electromagnetic interference. Finally, a closed-form solution of average block error rates of the two users is given, and power allocation coefficients and transmissive and reflective coefficients are jointly optimized to realize optimal system transmission block length under the reliability constraint of the two users. The application maximizes the use of communication resources to realize high-reliability and low-latency communication under electromagnetic interference.

A packet processing apparatus includes a packet processor that processes a received packet and a buffering storage that performs storage processing on the received packet. The buffering storage includes a plurality of buffers that each stores the received packet, a selector that selects the buffer from which the packet is output, and a switching controller that controls the selector to sequentially switch buffers to be read from the plurality of buffers. The packet processor includes a distribution controller that determines a buffer of a distribution destination based on an insertion delay amount of each flow to which the packet belongs when the packet is received.

The application discloses a Bluetooth communication method with a dynamic bandwidth configuration mechanism, comprising: making a Bluetooth central device and a Bluetooth peripheral device perform connection synchronous streaming communication according to a connection synchronous streaming technology; making the Bluetooth central device and the Bluetooth peripheral device operating in a normal transmission mode perform normal transmission mode packet communication behavior, so that the Bluetooth peripheral device performs corresponding response signal transmission behavior; and making the Bluetooth central device and the Bluetooth peripheral device operating in a high bandwidth transmission mode perform high bandwidth transmission mode packet communication behavior, so that the Bluetooth peripheral device selects selected high bandwidth transmission mode packet communication behavior from the high bandwidth transmission mode packet communication behavior, and does not perform corresponding response signal transmission behavior.

The invention provides an HTGB measuring system and testing method suitable for a large number of discrete devices, and relates to the technical field of reliability testing of power semiconductor devices. The HTGB measuring system comprises a top layer power supply and main control structure, a middle layer grouping control structure and a channel layer measuring structure; the top-layer power supply and main control structure comprises a main bias power supply module, a main power supply bus, a main control computer and a system-level communication bus; the middle layer grouping control structure comprises at least one grouping control module, each grouping control module manages N independent test channels, and each grouping control module comprises an intra-group power supply distribution network, N high-resistance isolation networks, a group control unit and a grouping communication interface; the channel layer measurement structure comprises a grid bias input end corresponding to each test channel, a high-precision leakage current detection circuit, a channel protection circuit and a test interface. The method has ultrahigh test flux and efficiency, and has excellent channel independence and test consistency.

A guarding bit data packet self-recovery system executing at a wireless dongle or adapter of an information handling system comprising a controller to transmit a polling packet including instructions to a wireless input / output (IO) device to return a packet frame of a specified number of data packets at a specified data packet length via a wireless link and the controller to determine conditions of data error levels at a first threshold level and noise level below noise threshold level before generating instructions in a polling packet for the wireless IO device to transmit split bytes including guarding bits coded into each split byte via a Hamming algorithm and the controller to receive the packet frame with the split bytes and guarding bits and decoding the split byte to detect and correct a bit error located in the split byte to recover the wireless IO device data from the split bytes.

Joint packet communication includes transmitting, by an initial source node, at least a prefix of a joint packet over a shared communication medium. One or more additional source nodes on the shared communication medium transmit respective data of the joint packet over the shared communication medium after the transmission by the initial source node in a respective time interval. A final source node on the shared communication medium transmits at least a postfix of the joint packet after the transmission by the one or more additional source nodes. A destination node receives the joint packet over the shared communication medium and optionally dispatches the data of the source nodes to another network device.

Provided is a vehicle control system that can prevent delays and losses in packet communication, prevent handover failures, and improve productivity while ensuring safety for various types of vehicles. The vehicle control system includes an on-board terminal mounted on a vehicle and including a plurality of wireless modems; a plurality of wireless base stations that wirelessly communicate with the on-board terminal, and form a plurality of cells; and a vehicle central control device that communicates with the on-board terminal via one of the wireless base stations. Each of the plurality of wireless modems is configured to be able to, when the vehicle moves across the plurality of cells, execute a handover to switch a connection to one of the plurality of wireless base stations to another. Each of the plurality of wireless modems is configured to be able to set threshold for executing the handover different from the others.

The application provides a distributed addressing and fast routing method and system, and belongs to the technical field of satellite communication. A satellite relative motion model is first established, then a suitable reference system satellite deployment controller is selected based on the established satellite relative motion model, satellite address allocation is completed based on the deployed controller, and finally a routing table is synchronously established based on the allocated satellite address. The new data packet communication protocol is more flexible in field structure setting. The controller satellite positioned by betweenness centrality ensures short distance communication between the controller and each satellite. The distributed addressing method reduces frequent communication between satellites and improves address allocation speed. The routing table establishment process is synchronized with address allocation, which shortens network address and routing configuration time and improves network efficiency. In the later data packet transmission, network recalculation is not required. The routing table is established by size value matching, which maximally simplifies the routing table entries and routing table structure.

The application discloses a kind of air-ground coordinated efficient access and low latency short packet security communication method and system, it is related to wireless communication technical field.The present application includes: constructing the system model by multiple antenna transmitting end, air platform with reconfigurable intelligent surface, multiple legal receiving equipment and unlicensed receiving equipment, channel modeling is carried out to each communication link using RSMA;Based on the finite block length theory, the joint optimization problem is constructed with the maximum total achievable security rate of the system as the goal;The reflection coefficient of reconfigurable intelligent surface and the position of air platform are solved by alternating iteration;The final optimized reflection coefficient and air platform position are output.The present application significantly improves the total achievable security rate of short packet communication system by optimizing the position of air platform and the reflection coefficient of reconfigurable intelligent surface, and effectively guarantees the reliability and security of communication.

The application discloses a kind of short packet transmission methods and systems based on irregular IRS assisted backscattering communication, method includes: constructing irregular active intelligent metasurface assisted downlink short packet communication scene;Under the power constraint of base station transmitting power, backscattering signal-to-interference-and-noise ratio, irregular active intelligent metasurface, construct the optimization problem model of maximum backscattering short packet transmission rate;The optimization problem model is jointly optimized using the deep reinforcement learning model based on deep deterministic policy gradient, an optimization algorithm is proposed, the maximum neural network feedback under the optimal state is obtained, and then the highest transmission rate is obtained;The present application considers that irregular active IRS can further develop the spatial degree of freedom of reflecting unit, and then improve the system capacity, irregular active IRS backscattering communication sends information to user, enhances the information transmission from BS to user, increases the system transmission rate.

The purpose of the present disclosure is to salvage packets that might otherwise be discarded due to switching of a communication path and transmit the packets through a new path.　Therefore, the present disclosure provides a transfer device that transfers packets by switching packet communication paths, the transfer device having a transfer control unit that transfers packets waiting in a prescribed output buffer to another predetermined output buffer when at least one transfer condition is satisfied among a first transfer condition indicating that the number of packets waiting in the prescribed output buffer has exceeded a predetermined threshold value for a certain period of time, a second transfer condition indicating that the tendency to increase the number of packets waiting in the prescribed output buffer has continued for a certain period of time, and a third transfer condition indicating that the tendency to decrease the communication bandwidth of a prescribed output port corresponding to the prescribed output buffer has continued for a certain period of time.

The invention provides a federal splitting learning method and device for large model cooperative training, and the method comprises the steps: splitting a large model into a plurality of sub-models through employing a calculation graph segmentation algorithm based on a calculation graph of a to-be-trained large model; respectively distributing the plurality of sub-models to corresponding client devices; receiving model parameters uploaded by a plurality of client devices and obtained based on local data training; the received model parameters of the plurality of client devices are aggregated to generate a global model, which is a large model that integrates training knowledge of all client devices. According to the method, the problems of equipment resource mismatching, high frequent packet communication overhead and data privacy protection when a large model is trained in a heterogeneous distributed environment in the prior art can be solved, cooperative training of the large model is efficiently and safely carried out in a resource limited environment, and meanwhile, model performance and user privacy are guaranteed.

A system includes a plurality of meshed, packet-based communication channels for full-duplex signal transmission, a plurality of controllers as data receivers or data sources, wherein each of the plurality of controllers includes an interface for connecting at least one sensor or one actuator, a data processing device and exactly one transceiver, wherein the exactly one transceiver is connected to exactly one of the plurality of communication channels at any point in time, and at least one infrastructure component. The infrastructure component includes a data processing device and at least two transceivers, wherein each transceiver is connected to exactly one of the communication channels at any point in time. The communication channels are divided between a first subnet and a second subnet with all carrier frequencies of a signal transmission in the first subnet being different from all carrier frequencies of the signal transmission in the second subnet.