EFFIECIENT CO-EXISTANCE OF LTE WITH WIFI IN LICENSED AND UNLICENSED SPECTRUM AGGREGATION
Abstract
The technology evolution in mobile communications in last few years, has led to an exponential growth in video downloads and the increase in data usage due to smart phones. This resulted in requirement of larger air interface bandwidths. Hence, the Spectrum aggregation has recently received much attention due to the quick increasing of services. Considering the needs of higher data rates and hence wider bandwidths for advanced mobile communication systems, 3GPP standardized carrier aggregation (CA) as one of the important technological components for fourth generation (4G) Long term evolution (LTE) advanced systems. Here the user equipments are assigned carrier component (CC) belonging to different (Inter- band contiguous/noncontiguous) or same spectrum bands (Intra- band contiguous/non-contiguous). The users share the radio resources as per different scheduling schemes like round robin(RR), proportional fair (PF), best channel quality indicator (CQI), max-min, edge prioritized, channel traffic aware etc. Every scheduler has its own characteristic and provides improvement in terms of throughput or fairness. This paper discusses the simulations carried out to study the performance of RR, PF and best CQI schedulers in an urban, CLSM (closed loop spatial
multiplexing) environment using an LTE system level simulator.
Author
s. sri shanmuga priya,
P.Roopavathi
R.sri Mathi
K. Suganya
M. Vijaylakshmi
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