https://owlsports.com/sports/womens-tennis/roster/coaches/meg-barber/203
She represented the countries of Switzerland, Germany and Slovakia from 1996 through 2001, playing number one singles at various levels of international competition.
https://cis.temple.edu/~wu/teaching/Spring%202013/handoff.pdf
This scheme hands a MS over to a new BS only if the current signal level drops below a threshold and the target BS is stronger than the current one by a given hysteresis margin.