Table 3 3G LTE network model

Carrier frequency

2 GHz

System bandwidth

10 MHz

Inter-site distance

2 km

Std of shadow fading

8 dB

Power delay profile

ITU typical urban 20 paths

Antenna scheme

SIMO 1×2 – rx (MRC)

UE speed for fast fading process

3 km/h

Total eNode-B transmit power

46 dBm

Pilot, control channel overhead

3/7 symbols

QPSK: 1/3, 1/2, 2/3

Modulation/coding rate settings

16QAM: 1/2,2/3, 4/5

64QAM: 2/3, 4/5

CQI estimation

Ideal (std of estimation error 0 dB)

HARQ model

Ideal chase combining

a _k = 75, c = 4, 3D/2 = PDB

Scheduling parameters

r _lb = 100 kbps, ρ _d = 1/100

ρ _r = 1/300, F = 4 dB

Insufficient radio channel quality

G Factor ≤−3 dB

Services

QCI₂: live video streaming

\(\text {TQ}^{\text {QCI}_{2}}\) = 125 ms, PDB = 150 ms

QCI₄: buffered video streaming

\(\text {TQ}^{\text {QCI}_{4}}\) = 250 ms, PDB = 300 ms

QCI₈: web

\(\text {TQ}^{\text {QCI}_{8}}\) = 600 kbps

QCI₉: ftp

\(\text {TQ}^{\text {QCI}_{9}}\) = 600 kbps

Traffic Mix Cases

Equal Load

25 % load per service

Heavy Load live video streaming

40 % live video

20 % other services

Heavy Load buffered video streaming

40 % buffered video

20 % other services

Heavy Load web

40 % web, 20 % other services

Heavy Load ftp

40 % ftp, 20 % other services