109 results about "Packet communication" patented technology

The invention provides an AmBC-NOMA communication resource joint optimization method for a high mobility V2X scene, and relates to the technical field of communication resource joint optimization. Aiming at channel dynamic change caused by high-speed motion of a vehicle and the influence of the channel dynamic change on short packet communication reliability and rate performance, the method combines reflection type communication and non-orthogonal multiple access technologies, and on the basis of fully considering channel time-varying characteristics, a reflection coefficient, a power distribution coefficient and block length resource distribution in a system are jointly optimized, so that the reliability and the rate performance of short packet communication are improved. Therefore, the communication rate performance and the resource utilization efficiency under the requirements of short time delay and low error rate are improved. Through the method, the short packet transmission rate of the system can be remarkably improved under the conditions of limited time delay and channel uncertainty, and the actual application requirements of the future Internet of Vehicles system for efficient, low-time-delay and high-reliability short packet communication are met.

A short packet communication method assisted by an intelligent reflecting surface in an electromagnetic interference environment is characterized in that in a reflective intelligent reflecting surface assisted two-user non-orthogonal multiple access system, the intelligent reflecting surface assists remote users in communication, and a wireless access point sends a short data packet to the two users to realize high-reliability and low-delay communication; an electromagnetic interference source exists in the system, and transmitting power of the electromagnetic interference source and characteristics of transmission channels from the electromagnetic interference source to an intelligent reflecting surface and two users are assumed to be known; the method comprises the following steps: firstly, determining signal to interference plus noise ratio statistical characteristics of decoding of two users by utilizing statistical channel state information; secondly, determining an average block error rate of the two users under a fading channel according to a short packet communication related formula; and finally, under the reliability constraint, determining the optimal power distribution coefficient and the minimum common block length of the system. According to the invention, high-reliability and low-delay communication is realized.

Disclosed in the present invention is a power allocation method based on a cell-free massive MIMO short-packet communication system. The method comprises: on the basis of a Rayleigh fading channel model under channel aging, deriving an expression for a downlink achievable rate of a cell-free massive MIMO short-packet communication system under user mobility; with the goal of maximizing a minimum user rate, proposing a downlink power allocation method; and on the basis of a successive convex approximation method and geometric programming, performing iterative solving, wherein an obtained solution is used as a final power allocation result for calculating the rate of each user. The present invention maximizes a minimum user achievable rate of users in a system, effectively solves the problem of uneven quality of service for the users, enhances system fairness, and also has a relatively high convergence rate.

The invention provides a performance evaluation method for short packet coding communication, and belongs to the technical field of short packet communication. The method comprises the following steps that a system model of short packet coding communication is constructed, the system model comprises a ground base station, an unmanned aerial vehicle, a legal user side and a non-target user side which are in communication connection, and a reconfigurable intelligent surface is configured on the unmanned aerial vehicle; and according to all channel state information of the system model, carrying out average reachable secrecy rate analysis, average decoding error probability analysis and secrecy interruption probability analysis on the system model in sequence, and evaluating the performance of the system model according to all analysis results. According to the invention, the safety and reliability of performance evaluation of short packet coding communication can be improved.

The invention relates to an energy efficiency maximization method for a rate division multiple access (RSMA) short packet communication system, which is used for protecting an intelligent reflecting surface (IRS) assisted rate division multiple access (RSMA) short packet communication system under the influence of hardware damage. According to the method, a joint optimization problem is provided on the premise that hardware damage of a transceiver is considered, and the method aims at optimizing beamforming, IRS phase shifting and public rate allocation of a base station to maximize system energy efficiency under the conditions of user secrecy rate constraint, public rate allocation, IRS phase shifting and base station maximum transmitting power constraint. In order to solve the problem, firstly, an original non-convex fraction problem is converted into an equivalent concave problem by applying a Dinkelbach method; then, aiming at the non-convex constraint, a slack variable is introduced, an SCA technology is combined, and an AO algorithm is adopted for solving; according to the method provided by the invention, the performance of the IRS technology in the hardware damage environment can be better understood, and a new thought and a new method are provided for coping with challenges brought by hardware damage.

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.

The invention relates to a fault detection method applied to a heterogeneous training cluster, and the method comprises the steps: starting a detection process based on a defined unified interface; and executing a packet communication detection process, if a fault node is detected, outputting a detection result and ending the current detection process, otherwise, executing a packet training detection process, outputting a detection result and ending the current detection process. Compared with the prior art, the fault node can be accurately and efficiently detected, the problems that single communication detection is low in detection rate, and single training detection is long in time consumption and high in cost are solved, meanwhile, fault detection of a large-scale heterogeneous training cluster is supported, any chip can be supported, and the fault detection complexity applied to the heterogeneous training cluster is reduced.

The invention relates to an optimization method of an IRS auxiliary short packet communication broadcasting system based on DDPG, and aims to improve the performance of the broadcasting system. The method comprises the following steps: firstly, constructing an IRS-assisted downlink broadcast system model, including system composition and channel modeling, and introducing an actual phase shift model to simulate hardware limitation of the IRS; secondly, establishing an optimization target of a system model according to statistical channel state information; constructing a DDPG reinforcement learning model, and optimizing the phase shift of the IRS and the beamforming vector at the BS through training; and finally, carrying out minimum common block length analysis by utilizing the optimized parameters. Therefore, the performance of the multi-user broadcast communication system is improved.

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 communication node (12) for use in a communication network (10). The communication node (12) stores multiple Packet Data Convergence Protocol, PDCP, packets (24) in a transmit buffer (26). The communication node (12) discards a PDCP packet (24) from the transmit buffer (26). The communication node (12) makes a decision about whether or not the discarding of the PDCP packet (24) is to trigger transmission of a PDCP SN gap report (40). The decision is made based on one or more triggering criterions. In some embodiments, the one or more triggering criterions include one or more characteristics of a PDU Set (22) to which the discarded PDCP packet (24) belongs and / or one or more characteristics of a PDU Set (22) to which another PDCP packet (24) stored in the transmit buffer (26) belongs. The communication node (12) triggers or does not trigger transmission of the PDCP SN gap report (40) according to the decision.

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 provides an optimal rate segmentation method for improving reliability for short packet communication, which comprises the following steps of: S1, establishing a communication model based on rate segmentation multiple access, comprising a plurality of rate segmentation strategies, and representing the error probability of decoding a single stream by a user by utilizing a finite code length domain theory; s2, based on the decoding error probability of the user side, constructing an optimization problem of minimizing a maximum user weighted decoding error rate by taking power distribution and code length distribution as optimization variables; s3, introducing slack variables, code length integer field slack and Taylor approximation methods, converting non-convex constraints in the optimization problem into convex constraints, and constructing a convex constraint optimization problem; and S4, solving the convex constraint optimization problem by adopting an iterative algorithm based on continuous convex approximation to obtain an optimal power allocation scheme, a code length allocation scheme and a rate segmentation strategy. The method aims at minimizing the maximum decoding error probability of the user side, so that the reliability of a multi-user short packet communication scene is improved.

A software application performance-specific input / output (IO) device wireless communication packet polling and reception system executing at a wireless communication dongle of an information handling system comprising a controller to transmit, with a wireless radio system, an initial polling packet to instruct transmission of a packet frame by a wireless IO device in wireless communication with the wireless communication dongle, and the controller to identify a software application currently executing at the information handling system associated with a wireless IO device prioritized performance metric identified to impact performance of the software application. The controller to execute code instructions to identify, for a wireless IO device, an application suited data packet number and length for the packet frame estimated to meet the wireless IO device prioritized performance metric for performance of the software application.

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.

An embodiment of the present application provides a data processing method, device, and storage medium, the method comprising: upon receiving a first data packet, determining a first data stream and a first data packet header feature corresponding to the first data packet; if it is determined that the first data packet is not the first data packet in the first data stream, searching a first packet processing list corresponding to the first data stream from a correspondence between a preset data stream and a preset packet processing list; searching a first packet processing mode corresponding to the first data packet header feature from the first packet processing list; and performing data packet processing on the first data packet based on the first packet processing mode; through the above technical solution, the purpose of reducing data packet communication delay is achieved.

The invention relates to an intelligent reflector assisted short packet communication system optimization method based on deep reinforcement learning in an interference environment, and aims to design TD3-based active and passive beam forming joint optimization by using statistical channel state information of the system to improve the performance of the communication system. The method comprises the following steps: firstly, constructing an intelligent reflecting surface auxiliary short packet communication system model in an interference environment, including system composition and channel modeling, and introducing a physically realizable intelligent reflecting surface actual phase shift model; secondly, establishing an optimization target of a system model according to statistical channel state information; then, constructing a TD3 reinforcement learning model to jointly optimize active beam forming of the base station and passive beam forming of the intelligent reflecting surface; and finally, carrying out system minimum transmission block length analysis by utilizing the optimized active and passive beam forming to improve the communication quality of the system.

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 invention discloses a block length and beam joint design method for a short packet communication radar integrated system, taking the maximization of the sum of the achievable rates of all users as the objective function, and establishing a problem model for the block length and beam joint design of a short packet communication radar integrated system under the conditions of satisfying the signal-to-interference-noise ratio of the communication user, the user block length, the radar signal-to-noise ratio and the transmission power constraints. On this basis, by performing a first-order Taylor expansion on the objective function and the radar signal-to-noise ratio constraint, an approximate substitution function is obtained, and then the beamforming design and block length optimization problem model of the short packet communication radar integrated system is updated, and the updated problem model is iteratively solved until convergence. Compared with the prior art, the method of the present invention has significant advantages in terms of the sum of the overall achievable rates of the system while ensuring the radar signal-to-noise ratio performance.

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.

A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus for determining a reception area of a packet in a V2X system are provided. In described aspects, a reception terminal may receive location information of a transmitting terminal and range information of transmitted data, and may determine whether to provide feedback regarding the transmitted data based on the location information and the range information.

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.