A Dynamic Reservation Scheme based on Online Charging System with Family Shared Plan

For simplifying the bills and controlling the data usage, Family Shared Plan (FSP) is now a popular plan of telecommunications. Based on 3GPP specifications, Online Charging System (OCS) has to determine Granted Unit (GU) and create reservations per session before the services are delivered by the serving network. However, fixed GUs can not be adapted to dynamic consumer behaviors, such as travel, watching FIFA World Cup all night or taking pleasure in a new online application. Obviously, short of GUs will make redundant signals of reservation, but excessive ones will cause scarcity of resource. Since how to determine GU is an open issue by telecommunications operators, we design a new scheme to periodically assign dynamical GUs for subscribers belong to same FSP, based on their data usage and shared monthly data allowance. Simulation results not only show that our algorithm can substantially reduce redundant signals more than 3 times, no matter what unpredictable behaviors they do, but also observe interrelation between logging time and cooldown timer in our scheme.