This section describes the results of the simulations
performed to gain insight into the performance of PSO
and GA implementations for the network selection problem in 5G heterogeneous networks. Two network selection
scenarios with different network constraints, as well as the
SUs' requirements and conditions described in Section V-A,
were used to test the effectiveness of the proposed methods.
Among the differences in both scenarios, the major difference
is the price which SUs are willing to pay. In scenario 1,
each SU can join any network because the price each SU is
willing to pay is higher than the maximum cost of joining
any primary network. In scenario 2, a SU may be unable
to join a network owing to cost constraints. For example, in
scenario 2, the 6
th
SU can join only the 6
th
and 7
th
networks
because the price it is willing to pay is less than the cost
of joining the other networks. The objective function of the
particle or chromosome that has the highest tness value was