Table 2 Parameters in the experiments, with P^t = 29 dbm denoting the maximum transmit power P_max

Macro cell (MC) transmission radius

550 m

Macro cell (SC) path-loss factor (ρ)

4

Small cell (SC) transmission radius

85 m

Small cell path loss factor (ρ)

3

Mobility model

Random waypoint

UE speed (m/s) intervals

[0.2 2.2] for SC, [2 20] for MC

Number of user equipments (u)

12

Number of cells or BSs (s)

4

Number of carrier components (c)

5

Number of resource blocks per CC (b)

10

Maximum number of CCs for BS (f_s)

2

Maximum number of CCs for UE (k_u)

2

Available MCS (l)

29 MCSs in TS 36.213 [13]

Transmit powers of MBS

{0.3P^t,0.5P^t,1P^t}

Transmit powers of SBS

{0.05P^t,0.1P^t,0.2P^t}

Noise powers \(\left (N^{c,b}_{s,u}\right)\)

− 110 dbm

SNR-CQI index mapping

Refer to [27]

CQI-MCS index mapping

Refer to [27]

MCS index mapping to modulation and TBS index tables

Refer to TS 36.213 [13]