Title: A Multi-traffic Inter-cell Interference Coordination Scheme in Dense Cellular Networks,
Abstract: This paper proposes a novel semi-distributed and practical ICIC scheme based
on the Almost Blank SubFrame (ABSF) approach specified by 3GPP. We define two
mathematical programming problems for the cases of guaranteed and best-effort
traffic, and use game theory to study the properties of the derived ICIC
distributed schemes, which are compared in detail against unaffordable
centralized schemes. Based on the analysis of the proposed models, we define
Distributed Multi-traffic Scheduling (DMS), a unified distributed framework for
adaptive interference-aware scheduling of base stations in future cellular
networks which accounts for both guaranteed and best-effort traffic. DMS
follows a two-tier approach, consisting of local ABSF schedulers, which perform
the resource distribution between guaranteed and best effort traffic, and a
lightweight local supervisor, which coordinates ABSF local decisions. As a
result of such a two-tier design, DMS requires very light signaling to drive
the local schedulers to globally efficient operating points. As shown by means
of numerical results, DMS allows to (i) maximize radio resources reuse, (ii)
provide requested quality for guaranteed traffic, (iii) minimize the time
dedicated to guaranteed traffic to leave room for best-effort traffic, and (iv)
maximize resource utilization efficiency for best-effort traffic.