A novel cross layer policy based priority management for radio resource allocation in 4G MIMO OFDMA system (IEEE 802.16m)

IEEE802.16m is a suitable candidate for high quality wireless communication insurance according to the mobile users´ requirements thanks to its radio link flexibility using, Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) technologies. In this paper, we present the results of our policy which consists of a cross-layer optimization for the transmission of rtPS, nrtPS and BE applications over the downlink of an IEEE 802.16m technology. Our policy adapts well to radio channel variations, to the change in the number of transmit and receiving antennas, to data buffer size, to the adopted scheduling method for the three classes of service and the to priority management policy between users by adjusting the average throughput per user depending on the available resources, and to the fixed throughput threshold and the number of served users (network load). The goal is to ensure low latency for real-time applications, to maximize application throughput for tolerant latency services and concurrently provide equity between different classes of services.