The investigation's principal purpose is to expand coverage, i.e., enable superior transmission, by utilizing IRS inside micro cellular transmission across a two-tier 6G infrastructure constituted by one micro cellular tier running within a macro cell-based tier. As a consequence, the paper investigated and contrasted the performance of regular micro cellular connectivity to IRS-enhanced micro cellular networking in terms of upstream received power utilizing simulation-based measuring approaches. According to the research, implementing IRS enhances coverage, i.e., transmission effectiveness, for 6G services significantly.