A downlink admission control algorithm for UTRA-FDD

This paper deals with the problem of admission control in the downlink of UTRA-FDD. Significant differences with respect to the uplink admission control arise. While, in the uplink, admission control strategies based on the load factor are suitable, in the downlink, an admission strategy based on measured power levels appears more suitable. The paper proposes and analyses an algorithm that is based on monitoring the node-B transmitted power level, estimating the power demand that results from a new user and accepting this new user only if the resulting power is below an admission threshold. The impact of the different algorithm parameters is studied.