Connection admission control for indoor multimedia wireless communications

This paper proposes a connection admission control (CAC) algorithm for the reverse-link transmission of a packetized indoor multimedia wireless communication network using a direct sequence code division multiple access (DS-CDMA) protocol. The traffic types include voice, data, facsimile and low-rate video. The CAC algorithm maximizes the utilization of the system resources (i.e., the reverse-link frequency spectrum and the output buffers at the base stations) and, at the same time, guarantees quality of service (QoS) to each of the network users. It checks if there are enough resources for a new connection request by comparing the measured signal-to-interference-plus-noise ratio (SINR) to a calculated SINR threshold. If the measured SINR is higher than the corresponding SINR threshold for all mobile terminals (including the requesting mobile) in the microcell, then the requesting mobile terminal can be admitted into the system. The performance of the algorithm is verified by using the Markov modulated Poisson process (MMPP) to model the traffic sources.