3results about How to "Implementation Latency" patented technology

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 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.

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.