Radio resource management for uplink carrier aggregation in LTE-Advanced

Wang, Hua; Rosa, Claudio; Pedersen, Klaus I

doi:10.1186/s13638-015-0329-y

EURASIP Journal on Wireless Communications and Networking

Table 2 Summary of main simulation parameters

From: Radio resource management for uplink carrier aggregation in LTE-Advanced

Parameters	Settings
Simulation scenario	3GPP macro case number 1
Network layout	Seven macro sites - three sectors/site - wrap around
Channel model (UMa) [38]^a	LOS pathloss	22 log₁₀(d) + 28.0 + 20.0 log₁₀(f), shadow fading std = 4 dB, \( 10\ \mathrm{m}<d<{d}_{\mathrm{BP}}^{\hbox{'}} \)
	LOS pathloss	\( 40{ \log}_{10}(d)+7.8-18{ \log}_{10}\left({h}_{\mathrm{BS}}^{\hbox{'}}\right)-18{ \log}_{10}\left({h}_{\mathrm{UT}}^{\hbox{'}}\right)+2{ \log}_{10}(f) \), shadow fading std = 4 dB, \( {d}_{\mathrm{BP}}^{\hbox{'}}<d<5,000\ \mathrm{m} \)
	NLOS pathloss	161.04 − 7.1 log₁₀(W) + 7.5 log₁₀(h) − (24.37 − 3.7(h/h _BS)²)log₁₀(h _BS) + (43.42 − 3.1 log₁₀(h _BS))(log₁₀(d) − 3) + 20.0 log₁₀(f) − (3.2(log₁₀(11.75h _UT))² − 4.97), shadow fading std = 6 dB, 10 m < d < 5, 000 m
	LOS probability	\( \min \left(\frac{18}{d},1\right)\left(1- \exp \left(-\frac{d}{63}\right)\right)+ \exp \left(-\frac{d}{63}\right) \)
Inter-site distance	500 m
Component carriers	Intra-band CA: 2 × 20 MHz @ 2 GHz, inter-band CA: 20 MHz@1.8 GHz + 20 MHz@2.6 GHz
Component carriers	96 available PRBs for PDSCH per CC
Number of clusters	Single or dual clusters
PRBs per sub-band	Two PRBs
Sounding resolution	Two PRBs
Sounding period	Ten subframes
Sounding method	Imperfect SRS
eNode-B receiver	4-Rx MMSE
Max UE power	200 mW (23 dBm)
UE transceiver	Single transceiver for intra-band CA
UE transceiver	Two separate transceivers for inter-band CA
UE Tx bandwidth	ATB for multi-cluster
Packet scheduling	Joint proportional fair
Bursty traffic model	Finite buffer with different Poisson arrival rate
Bursty traffic model	Fixed payload size of 2 Mbits per UE
Full-buf. traffic model	Full buffer with fixed number of UEs
UE speed	3 km/h
Available MCSs	BPSK (R = 1/5,1/3)
	QPSK (R = 1/4,1/3,1/2,2/3,3/4)
	16 QAM (R = 1/2,2/3,3/4,5/6)
HARQ	Synchronous and adaptive with maximum of four transmissions
First Tx BLER target	20%
Link adaptation	Fast adaptive modulation and coding (AMC)
Pathloss compensation	α = 0.8
95th percentile user pathloss	118 dB@1.8 GHz, 120 dB@2 GHz, 123 dB@2.6 GHz
Power spectral density	Independent LAPC in each CC [34]
Average power back-off	P _backoff = 6 dB

^a f is the center frequency (Hz), h _BS and h _UT are the actual antenna heights at the BS and the UT (m), \( {h}_{\mathrm{BS}}^{\hbox{'}} \) and \( {h}_{\mathrm{UT}}^{\hbox{'}} \) are the effective antenna heights at the BS and the UT (m), d is the distance (m), \( {d}_{BP}^{\hbox{'}} \) is the break point distance \( {d}_{BP}^{\hbox{'}}=4{h}_{BS}^{\hbox{'}}{h}_{UT}^{\hbox{'}}f/c \) where c is the propagation velocity in free space, W is the street width (m), and h is the average building height (m).

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