SPECTRUM AGGREGATION WITH OPTIMAL MULTI-BAND SCHEDULING

This paper seeks to explore the integration of spectrum and
network resource management functionalities to the benefit of
achieving higher performance and capacity gains in an International
Mobile Telecommunications-Advanced (IMT-A) scenario.
In particular, we investigate the allocation of users over
two frequency bands (i.e., 2 GHz and 5 GHz) for a single operator
scenario. The same type of Radio Access Technology
(RAT) is considered for both frequency bands. It is assumed
that the operator has gained access to a non-shared 2 GHz band
and to part (or all) of the frequency pool band at 5 GHz. The
performance gain is analyzed in terms of higher data throughput.
The performance is heavily dependent on the channel
quality for each user in the considered bands which, in turn,
is a function of the path loss and the distance from the Base
Station (BS). The operator will have relevant improvements
when Mobile Stations are heterogeneously distributed on the
cell, with variable distances from the BS. A gain up to 500
kbps (20%) was obtained with the proposed optimal solution.