33 results about "Nonlinear integer programming" patented technology

This invention proposes an online SVC multicast method based on UAV relay in NOMA networks, aiming to maximize video reception quality at the base station edge. The method first constructs a visual graph model to characterize the coupling between UAV deployment and multicast group association. Based on this model, the video reception quality maximization problem is modeled as a clique-based nonlinear integer programming problem, decoupling the UAV-multicast group association and subchannel allocation subproblems. The former is transformed into a maximum weight clique problem with a vertex limit, and an improved maximum weight clique algorithm based on branch and bound is used to determine the UAV-multicast group association mode. For the latter, a rule-matching strategy is adopted to obtain the optimal resource allocation strategy with less computational cost. Simulation results show that this invention outperforms existing benchmark schemes in terms of aggregated peak signal-to-noise ratio (PSRN), spectral efficiency, and adaptability.