Adaptive Connection Admission Control Algorithm for LTE Systems

In this paper, a resource allocation algorithm and a connection access control scheme (CAC) for LTE systems with heterogeneous services are proposed. The proposed allocation algorithm introduces a transmission guard interval which gives high priority to real-time (RT) service packets approaching the delay deadline. The proposed CAC can adaptively adjust the threshold according to the network condition. Simulation results show that the proposed CAC scheme can not only balance the ongoing connections of different classes of traffics but also be easy to reserve resource and support handover users potentially.