8results about How to "Implementation Latency" patented technology

The invention discloses an optimization method for combining clustering, unloading and resources in an ultra-dense cache network, and the method comprises the steps: obtaining the network basic information of an ultra-dense Internet of Things, constructing a network system in which a clustering cache server provides auxiliary calculation unloading and file downloading, and constructing an optimization problem of minimizing the system time delay under the constraint; obtaining an initial solution according to the optimization problem, defining the initial solution as a parent population, performing adaptive exploration and development on the parent population by adopting an improved water wave energy attenuation algorithm, and finally obtaining a global optimal individual; pre-caching, calculation unloading and file downloading are executed according to the position of the global optimal individual, the clustering and caching capacity constraint of a caching server is met, and the aim of minimizing the system time delay is achieved.

The invention relates to the technical field of wireless information transmission, and provides a reconfigurable high-precision multipath time delay simulation method and device. Group time delay and relative time delay are graded for three times, fine time delay with the time delay amount within a decimal range is realized by using a reduced farrow filter structure, the precision can reach 0.1 ns, coarse time delay with the time delay amount being integral multiple of a system clock is realized by using ram resources, and large-range time delay of signals is realized by using ping-pong operation through a dislocation address control technology. And finally, large-range and high-precision multipath time delay simulation is realized.

This invention discloses a short-range, high-precision time-frequency synchronization positioning method and system, comprising: constructing a frequency-modulated continuous wave (FM-CVT) signal; embedding the FM-CVT signal into a Wi-Fi signal; loading the FM-CVT signal into the digital domain to obtain an initial FM-CVT signal; converting the initial FM-CVT signal into an analog signal via digital-to-analog conversion, and up-converting the analog signal; receiving the up-converted analog signal, down-converting the analog signal, and obtaining a received FM-CVT signal via analog-to-digital conversion; calculating the time delay and frequency offset between the initial FM-CVT signal and the received FM-CVT signal to obtain a time-frequency offset value; and compensating the time-frequency offset value for subsequent FM-CVT signals to obtain a synchronized FM-CVT signal. This invention utilizes the high time-frequency resolution characteristics of FM-CVT signals, accurately estimates the time delay and frequency offset through cross-correlation or Fourier transform, and performs closed-loop compensation, significantly improving the time-frequency synchronization accuracy and positioning accuracy in short-range scenarios.

The present application discloses an integrated photon delay array, comprising: a first arm and a second arm; wherein the first ends of the first arm and the second arm are respectively connected to the two output ends of the power configuration module, and the second ends of the first arm and the second arm are respectively connected to the two input ends of the output configuration module; a delay configuration module and a fixed delay module are also provided on the first arm; the power configuration module is used to distribute power to an input optical signal according to the configured power distribution mode, and the two optical signals after distribution are output along the first arm and the second arm respectively; the delay configuration module is used to configure a plurality of delay modes; the fixed delay module is used to construct a fixed delay difference between the first arm and the second arm; the output configuration module is used to configure the optical signals at the two output ends of the integrated photon delay array according to the output configuration requirements to achieve positive delay or negative delay. The integrated photon delay array has a compact structure, is conducive to large-scale application, and is reconfigurable.

The application discloses a task unloading and resource allocation joint optimization method in Internet of Vehicles, and the method comprises the following steps: constructing a mobile edge computing (MEC) system model of ultra-reliable low-latency communication (URLLC) vehicle users and enhanced mobile broadband (eMBB) vehicle users; based on the MEC system model, taking the average cost minimization of the time delay and energy consumption of all ULRIC vehicle users and eMBB vehicle users in the system as the target, taking the time delay constraint of ULRIC vehicle users and the total amount limitation of MEC server computing resources as the constraint condition, constructing a MEC system ULRIC / eMBB task unloading and resource allocation joint optimization model; solving the joint optimization model by adopting a heuristic algorithm based on a genetic algorithm, and obtaining the optimal task unloading rate of eMBB vehicle users, the optimal task unloading decision of ULRIC vehicle users and the computing resource allocation scheme of all vehicle users.

The embodiment of the invention provides a bandwidth authorization method, device and system, a storage medium and an electronic device, and the method comprises the steps: obtaining the data transmission information of a plurality of data transmitted by an optical network unit ONU; determining target data from the multiple pieces of data based on the time information of each piece of data; analyzing the target data, and determining the data packet length, the target sending time and the target sending period of the target data; and sending target bandwidth time matched with the data packet length, the target sending time and the target sending period to the ONU so as to indicate the ONU to send subsequent target data according to the target bandwidth time. According to the invention, the problem of system bandwidth waste caused by time delay and jitter of data transmission in the prior art is solved.

Embodiments of the present application provide a bandwidth authorization method, device and system, storage medium and electronic device, wherein the method comprises: obtaining data sending information of multiple data sent by an optical network unit (ONU); determining target data from the multiple data based on time information of each data; analyzing the target data to determine a data packet length, a target sending time and a target sending period of the target data; sending a target bandwidth time matching the data packet length, the target sending time and the target sending period to the ONU to instruct the ONU to send subsequent target data according to the target bandwidth time. Through the present application, the problem of system bandwidth waste caused by eliminating the time delay and jitter of data sending in the related art is solved.

The invention discloses a data transmission method and device, and relates to the technical field of data transmission. The method comprises the following steps: configuring a DMA descriptor of reported data based on the reported data; transmitting the reported data to a memory unit corresponding to the target address in the management server through a corresponding DMA channel based on the DMA descriptor; and when the reported data transmission is completed, triggering a message signal to interrupt the MSI, so that the management server responds to the MSI and reads the reported data from the memory unit array according to the memory pointer. In the application, the multi-port chip locally configures and manages the DMA descriptor, the management server does not need to participate in the configuration of the DMA descriptor, the synchronization of the DMA descriptor is realized through the memory pointer, and the management server does not need additional communication to exchange and confirm the DMA descriptor, so that the time delay of data transmission and data processing is reduced, and the data transmission efficiency is improved. And the management real-time performance of the multi-port chip is improved.