Sum-rate maximizing cell association via dual-connectivity

This paper proposes a dual-connectivity (DC) profile allocation algorithm, in which a central macro base station (MBS) is underlaid with randomly scattered small base stations (SBSs), operating on different carrier frequencies. We introduce two dual-connectivity profiles and the differences among them. We utilize the characteristics of dual-connectivity and their scenarios to reduce the feasible combination set to consider. Algorithm analysis and numerical results verify that our proposed algorithm achieves the near-optimal algorithm;s performance within 5% gap with low complexity up to 10^-6 times.