Title :
Low complexity subgroup formation in LTE systems
Author :
Araniti, Giuseppe ; Condoluci, Massimo ; Molinaro, Antonella ; Iera, Antonio ; Cosmas, J.
Author_Institution :
DIIES Dept., Univ. Mediterranea of Reggio Calabria, Reggio Calabria, Italy
Abstract :
In this paper, we address the definition of a low-complexity subgroup formation algorithm for multicast data delivery in Long Term Evolution (LTE) networks. With this aim, we extend the subgroup merging scheme (SMS), designed for generic Orthogonal Frequency Division Multiple Access (OFDMA) systems, by proposing two low-complexity subgroup formation schemes, named L-SMS and L-eSMS. Such schemes are tailored to exploit the great potentialities of LTE systems. Specifically, L-SMS is proposed in order to improve the scalability of SMS by handling a more efficient subgroup formation scheme with a computational cost which does not depend on the multicast group size. The L-eSMS also improves the resource assignment phase with the aim to achieve better near-optimal performance compared to L-SMS. Through simulations, we evaluated the effectiveness of the proposed schemes in different cell deployment and multicast configuration scenarios. The achieved results underlined that the proposed L-eSMS is well designed in order to guarantee performance close to the optimal one.
Keywords :
Long Term Evolution; OFDM modulation; communication complexity; frequency division multiple access; merging; mobility management (mobile radio); multicast communication; resource allocation; sensor placement; L-SMS; L-eSMS; LTE systems; OFDMA system; cell deployment; long term evolution; low complexity subgroup formation algorithm; multicast configuration; multicast data delivery; multicast group size; orthogonal frequency division multiple access; resource assignment phase; subgroup merging scheme; Complexity theory; Long Term Evolution; Merging; OFDM; Phase shift keying; Resource management; Throughput; LTE; Multicast; Networking and QoS; Traffic and performance monitoring;
Conference_Titel :
Broadband Multimedia Systems and Broadcasting (BMSB), 2013 IEEE International Symposium on
Conference_Location :
London
DOI :
10.1109/BMSB.2013.6621786