Table 1 Simulation parameters
From: Adjustment of mobility parameters for traffic steering in multi-RAT multi-layer wireless networks
Parameter | Configuration |
|---|---|
System | HSPA, LTE |
Layer | HSPA: macro, 5 MHz at 2,100 MHz (F1 and F2); |
pico, 5 MHz at 2,100 MHz (F1). | |
LTE: pico, 5 MHz at 2,600 MHz (F3) | |
Cellular layout | Macro: hexagonal grid, 21 cells (3×19 sites), |
Inter-site distance = 0.5 km. | |
Pico = 2 pico-cells/macro-area | |
Propagation | Macro 137.6 + 34.8 log10(R) |
[Hata-COST 231]; 43 dBm. | |
Pico 140.7 + 36.7 log10(R) | |
[3GPP TR 36.814]; 37 dBm. | |
Shadowing | Gaussian, std 8 dB (macro), 10 dB (pico) |
De-corr. length 50 m (macro), 13 m (pico) | |
Users per macro-area | 100 |
Users per hotspot | 34 (hotspot radius = 40 m) |
User speed | Hotspot 3 km/h; Non-hotspot 3, 50 km/h |
Service model | Video streaming |
Bit rate | 1,024 Kbps |
Mean inter-call time | 30 s |
Call duration | 10 s |
Dropping out | Interruption time = 10 s |
Handover settings | Intra-frequency A 3 (RSRP / Ec/No, offset = 2 dB), |
A 5 (RSRP/RSCP, A 5_1=−111 dBm, | |
A 5_2=−109 dBm) | |
Inter-frequency A 3 (RSRQ / Ec/No, offset = 4 dB) | |
Inter-RAT B 2/3A (RSRP/RSCP) | |
Time to trigger = 0.5 s | |
Reselection settings | ThreshServing,LowQ=−13 dB, |
ThreshX,LowQ=−12 dB, | |
ThreshX,HighQ=−10 dB, | |
Qrxlevmin = −Inf, Qqualmin=−18 dB, | |
Treselection=1.2 s | |
Simulation time | 150 s |
Warm-up | 50 s |
Simulation timeresolution | 100 ms |