Interactive demonstration of cellular network decision making
Phone connects to Tower B despite being further away because it provides the strongest signal (-72 dBm) with clear line-of-sight propagation.
Distance: 580m
Signal: -72 dBm (Excellent)
Status: Clear line-of-sight, optimal choice
Distance: 250m
Signal: -89 dBm (Poor)
Status: Close but obstructed by terrain
Distance: 1.2km
Signal: -98 dBm (Very Poor)
Status: Too distant, blocked by buildings