Random node joint probability distribution optimization method based on hexagonal cell

The invention discloses a random node joint probability distribution optimization method based on hexagonal cells, and belongs to the technical field of wireless communication. The method comprises the following steps: when an interference node O2 is positioned on an outer diagonal line of a hexagonal cell, a joint probability distribution function of distances from a user terminal U1 to a central base station O1 and from the user terminal U1 to the interference node O2 and the interference node O2 are positioned on a vertical bisector on one side of the hexagon, researching the joint probability distribution function of the distance from the user terminal U1 to the center base station O1 and the interference node O2, and obtaining the critical value of the distance from the interference node O2 to the center base station O1; for the condition that the distance from the interference node O2 to the central base station O1 exceeds a critical value, obtaining the optimal approximate circle area of the hexagonal