The invention discloses an intelligent metasurface auxiliary directional charger deployment method based on a heterogeneous graph neural network and deep
reinforcement learning, and belongs to the field of
wireless energy supplementation of
the Internet of Things. The method aims at solving the problems that at present, related work is mostly one-time static geometric deployment, the coverage range is limited, flexibility is insufficient, the optimization
granularity is coarse, high-quality charging
full coverage is difficult to achieve under the cost constraint, and the overall charging effectiveness of a network is difficult to maximize. According to the method, a
heterogeneous network graph fusing the relation of sensor nodes, directional chargers and intelligent super surfaces (RIS) is constructed, a heterogeneous graph neural network is deployed in a
base station in a centralized mode to extract the
network structure and energy state characteristics, and a near-end strategy optimization
algorithm is further combined. And joint optimization of a directional charger deployment position and a charging direction as well as an RIS position and reflection configuration is realized. According to the method, the charging coverage rate, the charging utility and the deployment cost are taken as a comprehensive target, the
optimal deployment strategy can be intelligently generated, the charging coverage is expanded, the charging utility is improved and the node
failure rate is reduced on the premise of controllable cost, so that the purpose of prolonging the service life of the network is achieved.