An Improved Radio Resource Management with Carrier Aggregation in LTE Advanced
Document Type
Article
Publication Date
1-1-2017
Abstract
Long term evolution-advanced (LTE-A) system introduces carrier aggregation (CA) technique to improve the user throughput by aggregating multiple component carriers (CCs). Previous research works related to downlink radio resource allocation with carrier aggregation have not considered the delay factor and the error probability. Therefore, the previous methods are unable to provide better quality of service (QoS) compared to the LTE-A standard. This paper considers the radio resource management problem by zooming into the head of line delay, probability of packet loss, and the delay threshold for different types of data. In doing this, several constraints are imposed following the specifications of LTE-A system. Hence, an improved method is developed in this study to enhance the system throughput and to maintain the computational complexity. Extensive simulations were carried out with other well-known methods to verify the overall performance of the proposed method. The result obtained indicates that the proposed method outperforms the previous methods in the measurement of average user throughput, average cell throughput, fairness index, and spectral efficiency.
Keywords
LTE-advanced, Carrier aggregation, Component carrier, Scheduling algorithm, Greedy method
Divisions
fac_eng
Funders
University of Malaya Center of Research Grant Management (PPGP) scheme (PV001-2014)
Publication Title
Applied Sciences
Volume
7
Issue
4
Publisher
MDPI