Autonomous coverage optimizing method of wireless access network

The invention discloses an autonomous coverage optimizing method of a wireless access network, relating to the technical field of wireless access networks. The autonomous coverage optimizing method comprises the following steps of: S1, detecting a trigger condition of an autonomous coverage optimizing event, if the trigger condition is met, executing the step S2, if the trigger condition is not met, continuously detecting the trigger condition; S2, extracting measurement data from a measurement report, wherein the measurement data includes a coverage index value; S3, evaluating the current network coverage condition aiming at the measurement data, if the coverage index value reaches a target reference value, ending, and if the coverage index value does not reach the target reference value, executing the step S4; S4, according to the current coverage abnormal condition, obtaining an adjustment amount of a downward inclination of a base station antenna by adopting a simulated annealing algorithm; and S5, adjusting the downward inclination of the base station antenna according to the adjustment amount obtained in the step S4, and obtaining the measurement report again, and returning the step S1. According to the invention, the problem of coverage caused by unreasonable setting of the parameter of the base station antenna in the wireless access network can be solved.