121 results about "Burst transmission" patented technology

A WTRU may detect a reflected SSB transmission from a RIS. The reflected SSB is associated with an index. The WTRU may determine a source device of the reflected SSB transmission based on the index. For example, the WTRU may determine that the reflected SSB transmission was reflected by the RIS based on the index associated with the RIS. The WTRU may perform a random access procedure with a network device via the RIS based on the index. The SSB transmission may be associated with an SSB burst transmission comprising a plurality of SSB transmissions, where each of the plurality of SSB transmissions may be associated with the index. The plurality of SSB transmissions may comprise SSB transmissions reflected by the RIS and / or SSB transmissions not reflected by the RIS. The spatial state of the RIS may be maintained constant and / or may change during the SSB burst transmission.

The invention provides a network flow control method and system, an engine, a node and related equipment, and relates to the technical field of communication. The method comprises the steps that communication information of a source computing power node is received, and the communication information comprises identification numbers of the source computing power node and a target computing power node and an identification number of a source port selected by the source computing power node; determining an optimal source port and a sending rate of the source computing power node based on the communication information; determining a forwarding path of the source computing power node based on the optimal sending port; configuration information is sent to the source computing power node, and the configuration information comprises the sending rate and the forwarding path. By means of the technical means, the problems that in network data transmission in the related technology, the link bandwidth is not fully utilized, and burst transmission flow cannot be dealt with are solved.

The invention discloses a data transmission method and device, an industrial control system, a storage medium and a computer program product, and the method comprises the steps: initializing a continuous physical memory, dividing the continuous physical memory into memory blocks with a fixed size, recording the initial address, size, idle or occupied state of the memory blocks through a red-black tree, and forming a dynamic address pool; the dynamic address pool can realize on-demand allocation of memory blocks and merging and dynamic expansion of adjacent free blocks; the method comprises the following steps: acquiring a load index in real time through an FPGA (Field Programmable Gate Array), triggering interruption based on load grading and predicting a memory demand in combination with a machine learning model, and pre-fetching a memory block from a dynamic address pool to a user mode mapping region before a real-time task initiates a memory allocation request; a user mode atomic operation annular queue is designed, direct data interaction between the X86 and the FPGA is achieved through memory mapping, and a Burst transmission and cache consistency protocol of a hardware bus is combined. According to the scheme, the problem of memory fragmentation is solved, the data transmission delay is reduced, and the CPU occupancy rate is greatly reduced.

The invention discloses a national cryptographic algorithm acceleration system supporting SM4-ZUC dual-core dynamic collaboration, and belongs to the technical field of information security and hardware acceleration. The system comprises an AXI read-write module, a configuration register module, an SM4 algorithm module and a ZUC algorithm module. The configuration register receives and distributes information such as a secret key, an initial vector and a mode through an APB interface; the AXI read-write module supports burst transmission and dynamic scheduling data read-write; the SM4 algorithm module supports three modes of GCM, CTR and ECB; and the ZUC algorithm module is compatible with ZUC-128 / 256. And the corresponding ZUC-128 / 256 and SM4 algorithms can be dynamically selected for operation by judging an encryption mode in the ZUC and SM4 algorithms. The system adopts a three-level assembly line architecture, space-time multiplexing of read-write data and encryption is realized, and throughput rate is improved.

Methods, systems, and devices for wireless communications are described. An application server (AS) may generate one or more packet data unit (PDU) sets of a first periodic burst transmission. The first periodic burst transmission may correspond to a first delivery deadline at a user equipment (UE) during a jitter window. The jitter window may span a time period prior to and after a first arrival time associated with the one or more PDU sets. The AS may buffer at least a portion of the one or more PDU sets for a first duration of the jitter window. The first duration may correspond to a threshold percentage of the jitter window. The AS may output the one or more PDU sets based on expiration of the first duration and prior to the first delivery deadline.

The invention belongs to the technical field of embedded system information security, and particularly discloses a program control flow protection system and method based on stack data confidentiality and integrity. According to the method, the key stream is generated and managed during memory access of the special hardware for micro-architecture level design, and quick encryption and decryption calculation of the stack key data is realized through the exclusive-or operation of the key stream and the stack data. The stack data confidentiality protection supports the burst transmission property of an AHB-Lite bus on which stack data transmission depends, and the execution overhead of a program control flow protection method is reduced; on the basis of data encryption, MAC codes are calculated and verified when stack data are written in and read out based on a stack data integrity verification architecture of the MAC codes, real-time detection of tampering of stack key data is achieved, and program control flow abnormity is found in time. Through parallel encryption and decryption and integrity verification of the stack data, protection of the program control flow is realized from the aspect of stack data protection.

Example embodiments of the present disclosure relate generally to communications and, more particularly, to channel access for a frequency band. An apparatus detects at least one synchronization signal and physical broadcast channel block during searching for a synchronization signal associated with a cell in a communication network. The apparatus determines a configuration related to whether or not a discovery burst transmission window is used for the cell. The apparatus determines, based on the configuration, whether or not the discovery burst transmission window is used for the cell. The apparatus determines at least one assumption to use when monitoring and detecting the synchronization signal and physical broadcast channel block, based on whether or not the discovery burst transmission window is used for the cell.

An operating method of a first device (100) in a wireless communication system is presented. The method may comprise the steps of: selecting a plurality of resources for performing burst transmission, which includes a plurality of transmissions; determining, on the basis of the highest value from among a plurality of channel access priority class (CAPC) values related to a plurality of transmissions, the length of a channel sensing window for performing channel sensing for the plurality of transmissions; performing first channel sensing on an initial resource from among the plurality of resources; and performing the burst transmission on the basis of the plurality of resources and the first channel sensing result of being idle.

The invention provides a fast differential frame synchronization method under a burst transmission system, which comprises the following steps: a receiver reduces the sampling rate of a burst transmission sequence to four times of a symbol rate, detects the timing error of a down-sampling sequence, calculates an integer parameter and a fraction parameter based on a timing error result, and performs frame synchronization according to the integer parameter and the fraction parameter; then, a cubic interpolation filter is used for calibrating timing errors and recovering a correct data sequence, a differential frame synchronization method which is insensitive to signal amplitude and suitable for any phase deviation is used for searching a frame header position, and whether the size of a correlation peak value is larger than a set threshold value or not is judged; if yes, timing synchronization and frame synchronization are completed; and if not, returning to continue to calculate the timing error. The method is suitable for a burst transmission system, is different from a traditional frame synchronization method, does not need to carry out frequency difference estimation, amplitude control and carrier synchronization in advance, and can quickly realize timing synchronization and frame synchronization, so that the synchronization time is shortened.

The invention provides an FPGA high-bandwidth memory transmission system and method based on a network-on-chip and burst optimization, the system comprises a calculation unit module, an on-chip interconnection module, an HBM management module and an HBM memory, an Omega network topology is arranged in the on-chip interconnection module, and a non-blocking FIFO return voltage flow control mechanism is introduced into the Omega network topology; a fine-grained burst control unit is arranged in the HBM management module, and the fine-grained burst control unit comprises a preset burst transmission configuration code class; the calculation unit module is used for acquiring a defined FPGA calculation unit, constructing a request data packet, acquiring return data of the on-chip interconnection module and generating a response data packet; the on-chip interconnection module and the HBM management module are used for transmitting communication data; the HBM memory is used for storing the HBM memory data. According to the invention, efficient access of the HBM in the FPGA system is realized, the problem of on-chip resource competition during cross-channel access is avoided, and the overall bandwidth performance of the system is improved.

Methods, systems, and devices for wireless communications are described. An application server (AS) may generate one or more packet data unit (PDU) sets of a first periodic burst transmission. The first periodic burst transmission may correspond to a first delivery deadline at a user equipment (UE) during a jitter window. The jitter window may span a time period prior to and after a first arrival time associated with the one or more PDU sets. The AS may buffer at least a portion of the one or more PDU sets for a first duration of the jitter window. The first duration may correspond to a threshold percentage of the jitter window. The AS may output the one or more PDU sets based on expiration of the first duration and prior to the first delivery deadline.

According to the PCIe interface implementation method and device for FPGA high-speed data transmission, a direct memory access mechanism is innovatively designed, and safe and efficient transmission of data is achieved through physical continuous cache region registration and descriptor queue management. A data block organization strategy based on a timestamp is constructed, and a reliable data transmission control system is established in combination with a burst transmission channel and a state tracker. A state register and an interrupt mechanism are introduced, and the integrity and information security of the transmission process are ensured through real-time state monitoring and data synchronization. According to the method, data security is protected, meanwhile, the defects of the traditional technology in the aspects of transmission efficiency, data management, state monitoring and the like are effectively overcome, and the performance and reliability of the PCIe interface are remarkably improved.

The present application relates to a method and an apparatus for sidelink burst transmission. The method includes: performing a channel access procedure for initiating a channel occupancy for sidelink transmission; transmitting sidelink control information (SCI) to another apparatus within the channel occupancy; wherein the SCI includes an indicator indicating a remaining duration of the channel occupancy; and transmitting sidelink data associated with the SCI to the another apparatus without exceeding the remaining duration of the channel occupancy.

The invention discloses a data transmission system and method based on optical remote sensing data. The system comprises a user terminal, a satellite constellation and a ground control center, wherein the ground control center is configured with a terminal position and ephemeris management module, an environment modeling module, a track and sight distance prediction module and a resource scheduling optimization module. A high-precision three-dimensional environment model around a user is constructed by introducing optical remote sensing, and in combination with satellite trajectory calculation and ray tracing / machine learning prediction, link shielding is judged and avoided in advance. Based on a prediction result, the system can perform high-speed burst transmission in a visible window or actively complete satellite switching before shielding, so that the continuity and reliability of satellite direct connection communication in complex environments such as cities and canyons are remarkably improved. According to the invention, the limitation of passive switching in the prior art is broken through, the resource utilization rate and the user experience can be effectively improved, and technical support is provided for constructing an ubiquitous space-ground integrated communication network.

The invention discloses an anti-interference multi-label webpage identification method and system under an encrypted traffic condition, and the method comprises the steps: constructing a dynamic association graph through a burst transmission structure of the encrypted traffic, precisely deconstructing aliasing traffic through an entropy weight punishment mechanism and a node aggregation algorithm, and outputting an independent substream sequence; extracting non-stationary time-frequency features for the substreams, fusing the non-stationary time-frequency features with graph topology features extracted based on a graph structure in a tangent space, generating disturbance samples by using an adversarial training environment, adjusting feature weights, and generating composite fingerprints; executing long time sequence modeling on the Lie group manifold by using a Bi-Mama network, reserving a modulation interface, and outputting a preliminary recognition probability; and auditing causal consistency through a webpage loading logic state machine, converting an abnormal state into geodesic line correction in a Lie algebra tangent space, and correcting network parameters on line through a reserved interface. According to the method, the problems that aliasing traffic is difficult to deconstruct, fingerprint robustness is insufficient and an identification result lacks logic consistency constraint are solved.

The invention discloses a TFDM-PON system correction method and device, and the method comprises the steps: an OLT receives a dual-polarization signal transmitted by an ONU based on time division multiplexing or time-frequency division multiplexing, the dual-polarization signal comprises a target signal sequence corresponding to X / Y polarization, and the target signal sequence is an IQ period complex signal, and an I path and a Q path of the IQ period complex signal are single-tone signals of a first frequency and a second frequency respectively; target parameters including target transmitting and receiving end frequency deviation, IQ time delays of a target transmitting end and a target receiving end and target power deviation among ONUs are calculated based on Fourier transform and frequency domain symmetry of the dual-polarization signals, so that the ONUs carry out frequency, time delay and power correction according to the target parameters. Subcarrier crosstalk caused by frequency offset in TDM uplink burst transmission, mirror image crosstalk caused by IQ imbalance and performance degradation caused by power imbalance between subcarriers are eliminated, the bit error rate is reduced, and the system robustness is improved.

The application discloses a stability test method, device, equipment and storage medium of a DRAM particle. The method comprises the following steps: restarting a test system for a preset number of times, executing a preset test strategy in a universal boot loader stage of each test system starting process, the preset test strategy comprising the following steps: enabling a CPU cache, and configuring the CPU to access the DRAM particle in a non-burst transmission mode; based on hardware configuration information of the DRAM particle, allocating at least two test areas in an address space of the DRAM particle; traversing each working frequency supported by the test system, testing the read-write stability of the DRAM particle in direct read-write under each working frequency based on the at least two test areas, and testing the read-write stability of the DRAM particle after the test system enters a sleep mode and wakes up under each working frequency. The application has the technical effect of providing sufficient test pressure by using the CPU cache and avoiding external interference after the system is completely started, and effectively improves the comprehensiveness and accuracy of the DRAM particle stability test.

A digital signal processing device and a control method of the digital signal processing device are provided. It is made possible to generate audio data having a delay time in units of a sampling period. The digital signal processing device has a delay unit (114) that delays the audio data in units of the sampling period, and a control unit (106) that controls to sequentially write the audio data in units of a word in the sampling period to a first buffer memory, burst transfer the audio data of a burst length from the first buffer memory to a DRAM, and controls to burst transfer the audio data of the burst length from the DRAM to a second buffer memory, sequentially output the audio data in units of a word from the second buffer memory (107) to the delay unit in the sampling period, and the delay time of the audio data outputted by the delay unit is determined by a combination of a delay time in units of a plurality of the sampling periods depending on the burst length of the DRAM and a delay time in units of the sampling period of the delay unit.

A coherent transmitter (100, 200) for use in a time division multiple access (TDMA) system is operated in multiple states to enable coherent burst transmission. In an OFF state, the transmitter (100, 200) generates a dummy laser output (fd) from either a dummy laser (102) or an active laser (52) tuned to a dummy frequency different from an active frequency (fa), thereby maintaining thermal and bias stability without adding excess power on an upstream channel (22). In an ON state, the active laser (52) produces an active laser output (fa) that is modulated by a quad-parallel Mach-Zehnder (QPMZ) modulator (60) to transmit data. A thermoelectric cooler (TEC) (58) stabilizes laser temperatures, and a variable optical attenuator (VOA) (54) controls output power. The transmitter (100, 200) is suitable for an optical network unit (ONU) (14) in a passive optical network (PON) (10) communicating with an optical line terminal (OLT) (12).

There are provided methods and systems for scheduling downlink (DL) and uplink (UL) transmissions in one or more Point-to-Multipoint (PTMP) IEEE 802.11 orthogonal frequency division multiple access (OFDMA) based wireless communication networks, each network comprising one or more IEEE 802.11 OFDMA based Access Points (APs) wherein each AP of said one or more APs comprises associate one or more IEEE 802.11 OFDMA stations (STAs), the method comprising the steps of: synchronizing the one or more STAs within each network using one or more synchronization signals transmitted between the one or more APs and the one or more STAs; allocating one or more Framing Slots, wherein each Framing Slot having a fixed time duration; dividing each Framing Slot of said one or more Framing Slots into DL burst transmission and UL burst transmission periods wherein the DL burst transmission periods comprise one or more DL Data Units Bursts and continuously scheduling by said one or more IEEE 802.11 OFDMA based APs the one or more DL Data Units Bursts during said DL transmission period to said one or more STAs; and continuously sending said one or more UL Data Unit Bursts by said one or more STAs to said respective one or more APs.

A terminal according to one aspect of the present disclosure is characterized by comprising: a reception unit that receives a periodic, semi-persistent, or aperiodic sensing burst transmission resource configuration; and a control unit that controls transmission of a sensing reference signal (RS) within a sensing burst on the basis of a sensing burst measurement resource configuration. According to one aspect of the present disclosure, the performance of wireless sensing can be improved.

The invention belongs to the technical field of communication signal detection and identification, and particularly relates to a multi-unmanned aerial vehicle identification method based on burst signal detection, which comprises the following specific steps: S1, constructing an unmanned aerial vehicle signal time-frequency domain characteristic parameter library: based on a communication system of typical unmanned aerial vehicle signals, analyzing characteristic parameters, and establishing an unmanned aerial vehicle signal time-frequency domain characteristic parameter library; parameters of a working frequency band, a signal bandwidth, a burst transmission time slot length and a burst transmission time interval of an unmanned aerial vehicle signal are obtained and divided into time domain parameters and frequency domain parameters. According to the method, through statistical analysis of time domain and frequency domain characteristic parameters of unmanned aerial vehicle burst signals, unmanned aerial vehicle signal sorting of known signal characteristics can be rapidly and efficiently realized without complex processing, and meanwhile, signal characteristic database establishment of unknown unmanned aerial vehicles can be realized based on time domain and frequency domain parameter statistical analysis, so that the unmanned aerial vehicle signal sorting and identification problem can be well realized.

A system and method for managing a Discovery Burst Transmission Window in a wireless communication system. In some embodiments, the method includes: receiving, by a User Equipment (UE), a first Signal Synchronization Block (SSB); decoding a first Physical Broadcast Channel (PBCH) from the first SSB; determining, from a Master Information Block (MIB) of the first PBCH, a first beam value; determining, from the first PBCH, a first candidate Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block index; and calculating a first SS / PBCH block index as A mod Q, wherein A is the first candidate SS / PBCH block index and Q is the first beam value.

Various illustrative appearances relate to a data storage device, a method, and one or more processing devices configured to: open a servo gate in the selected head during a read operation to read the first servo bursts, the sync mark, and the second servo bursts in one of the servo sectors; and determine a position error signal for the selected head based on reading the first servo bursts and the second servo bursts.

The invention relates to the technical field of image processing, in particular to an image arbitrary-angle rotation method and device based on Z-shaped segmentation efficient caching, and the method comprises the steps: partitioning a target image and an original image, reversely rotating four coordinate points of the segmented blocks of the target image to the original image, firstly judging whether the current target block is a filling block or a scanning block, and then, carrying out the segmentation of the target image; scanning the scanning blocks pixel by pixel, and directly filling the filling blocks. According to the method, the characteristics of burst transmission and advanced transmission adopted by the AXI bus are efficiently utilized, the utilization rate of bus transmission is greatly improved, the transmission time of bus data is shortened, and the overall performance of image rotation processing is improved; when the target image is partitioned, a Z-shaped segmentation mode is adopted, the correlation of reading the pixels of the original image blocks during color calculation of the target image is increased, the original image pixel blocks are cached in a cache mode, the number of times of reading the original image pixel blocks is reduced, the reading time of a bus is shortened, and the reading efficiency of the original image is improved. And the overall performance of image rotation processing is improved.

The invention discloses a signal synchronization method, device and equipment, a medium and a computer program product, which are applied to the technical field of satellite communication, and the method comprises the following steps: determining a target mode corresponding to a burst transmission signal based on a pilot frequency proportion coefficient; the pilot frequency ratio coefficient is a parameter representing the available degree of the known symbol resource; performing timing synchronization on the burst emission signal to obtain a complete burst signal; and carrying out carrier synchronization on the complete burst signal based on an optimal carrier synchronization method corresponding to the target mode to obtain a frequency offset estimation value and a phase offset estimation value. Compared with a carrier synchronization method which completely uses fast Fourier transform at present, the carrier synchronization method disclosed by the invention has the advantages that the target mode corresponding to the burst transmission signal is determined based on the pilot frequency proportion coefficient, the optimal carrier synchronization method corresponding to the current burst transmission signal is determined based on the target mode, and carrier synchronization is carried out; therefore, the carrier synchronization method and device can improve the carrier synchronization effect.

The invention provides a data set construction method for encrypted network traffic classification, which comprises the following steps: acquiring encrypted traffic data from a network according to various categories required to be identified by a traffic classification task to obtain traffic data files including a plurality of PCAP files under each category; determining a plurality of encrypted session flows based on the flow data file, including one or more encrypted session flows contained in each PCAP file, each session flow including a plurality of data packets generated during interaction of two communication parties; according to the data packet of each session flow, multi-modal features of the session flow are extracted, and the multi-modal features comprise metadata features, encrypted payload byte features and burst transmission features; and according to the multi-modal features of the plurality of encrypted session flows and the category corresponding to the PCAP file to which each encrypted session flow belongs, a data set comprising a plurality of samples is constructed, and each sample comprises input data constructed according to the multi-modal features of each session flow and a label indicating the category to which the session flow belongs.

The present disclosure relates to a data processing method, device, equipment and medium of an SRAM controller, the method comprising: receiving an access request of an AXI bus; in the case that the access request is burst transmission, performing address splitting according to the size of the transmission data in the access request to obtain a plurality of access addresses; calculating an error correction code for the access addresses and sequentially storing the access addresses carrying the error correction code into a cache queue; taking out a first access address from the cache queue, determining an address range accessed by the SRAM controller according to the first access address and the bit width of the SRAM device; merging the access addresses within the address range from the remaining access addresses in the cache queue into one access operation; and accessing the SRAM device based on the access operation. The present disclosure can improve the data transmission efficiency between the AXI bus and the SRAM, effectively improve the system bandwidth utilization, and reduce the access delay.

Approaches are described herein for secure masking of channel activity for transmission security (TRANSEC) enabled terminals in satellite communication networks. Embodiments include techniques for masking channel activity at the link-layer in the outroute and / or in the inroute. For example, in the outroute, embodiments encapsulate packet data units (PDUs) using a TRANSEC-compatible stream encapsulation protocol. In the inroute, embodiments encapsulate burst transmissions using a TRANSEC-compatible inroute burst encapsulation protocol. Outroute and / or inroute activity can be further masked by creating the impression of constant-rate traffic, constant-rate bandwidth allocations, and the like.

An information handling system including a encapsulated antenna may comprise the encapsulated antenna encapsulated in a phase-changing compound to absorb heat, the antenna and the compound enclosed within an outer encapsulated antenna housing a wireless interface device with a 5G radio to generate burst signals to be transmitted via the encapsulated antenna, an information handling system chassis having a skin surface coming into contact with human skin during execution of the information handling system, and a temperature sensor to determine an operable temperature of the antenna reaching a known phase transition point at which the phase-changing compound changes states at least partially from solid to liquid.