Overview of joint admission control algorithms based on different strategies

Multiple radio access technologies in wireless communications networks will coexist and work together for a long time. The traditional admission control methods are not satisfied to the requirements of current users and networks. Joint admission control is one of the key parts of wireless resource management and the performance of admission control directly influences the quality of service. A strategy repository is established through classifying different admission control strategies. Then a strategy selection mechanism is designed to improve the blocking probability, interruption probability, user satisfaction and network resource utilization. Based on these, performance of different strategies and relevant algorithms are discussed and summarized. Finally, the problems and future research directions are proposed for joint admission control.