00742nas a2200121   4500000000100000008004100001100002800042700001900070700002100089245004300110856010000153520036700253       2023                            d1 aLlorenç Cerdà-Alabern1 aGabriele Gemmi1 aLeonardo Maccari00aReliability Analysis in a Wireless ISP  uhttps://www.ac.upc.edu/app/research-reports/public/html/research_center_index-XCSD-2023,en.html3 aThis brief report investigates different quality parameters to assess the reliability in Wireless Internet Service Providers, WISPs. In our analysis we use a Markov chain approach. We investigate the time to failure, failure probability and reliability. We obtain a closed-form reliability formula for the failure of a system subject to the failure of k devices.