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1Comparison of multicast/broadcast services in Long Term Evolution Advanced and IEEE 802.16m networks
المؤلفون: Jorge Calabuig, David Martin-Sacristan, Joan Olmos, Jose F. Monserrat
المصدر: Wireless Communications and Mobile Computing. 14:717-728
مصطلحات موضوعية: Multicast, Computer Networks and Communications, business.industry, Computer science, IMT Advanced, ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, Data_CODINGANDINFORMATIONTHEORY, Broadcasting, Multiplexing, WiMAX, Transmission (telecommunications), Hardware_GENERAL, Time-division multiplexing, Electrical and Electronic Engineering, Unicast, business, Information Systems, Computer network, Data transmission
الوصف: This paper performs a comparison of multicast/broadcast services MBS support in Long Term Evolution Advanced LTE-A and Worldwide Interoperability for Microwave Access WiMAX IEEE802.16m. Firstly, the main technical features of both standards concerning MBS operation are presented. It is shown that WiMAX offers higher unicast/MBS multiplexing flexibility as it supports both frequency and time multiplexing schemes, whereas LTE-A only includes time multiplexing. Besides, only WiMAX supports multi-antenna transmission. Next, the results of two simulation-based assessments are presented. In the former, it is considered a scenario with all cells transmitting the same MBS service. The effect of inter-site distance ISD on the maximum MBS data rate is evaluated. Results show that WiMAX configurations outperform LTE-A for small ISD. This is because WiMAX provides a higher number of resources dedicated to data transmission for the same bandwidth. Furthermore, some WiMAX configurations support two spatially multiplexed data streams. With higher ISDs, LTE-A outperforms single-stream WiMAX configurations. In the second assessment, a MBSFN area surrounded by interfering cells is considered to compare unicast/MBS multiplexing performance. The higher maximum MBS data rate is achieved in WiMAX with time division multiplexing, which is precisely the only alternative included in LTE-A. Copyright © 2012 John Wiley & Sons, Ltd.
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