Automated coverage optimization scheme based on downtilt-adjustment in wireless access networks

To solve the abnormal coverage problems caused by unreasonable network parameter settings more effectively, an automated coverage optimization scheme based on downtilt-adjustment of base stations in wireless access networks is proposed. After detecting and analyzing the abnormal coverage situation, simulated annealing algorithm is adopted by the scheme to figure out an optimal downtilt-adjustment solution for each base station. And then each base station can effectively adjust its electronic downtilt according to the solution to optimize the coverage. The whole process is completed without human intervention. Simulation results show that the proposed automated coverage optimization scheme can improve the wireless network coverage quality. Moreover, weak coverage and excessive coverage problems can be solved effectively.