Dynamic Bandwidth and Carrier Allocation for Video Broadcast/Multicast Over Multi-Cell Environments

Authors:
Taegeun Oh;Hyungkeuk Lee;Sanghoon Lee
Affiliations:
The Center for Information Technology of Yonsei, Yonsei University, Seoul, Korea 120-749;The Center for Information Technology of Yonsei, Yonsei University, Seoul, Korea 120-749;The Center for Information Technology of Yonsei, Yonsei University, Seoul, Korea 120-749
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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Abstract

Recently, broadcast/multicast over cellular networks has been actively discussed over commercial wireless mobile terminals. Compared to conventional terrestrial or satellite broadcasting systems, the quality-of-service (QoS) for edge users is an important issue due to inter-cell interference over multi-cell environments. In this paper, we introduce a dynamic bandwidth and carrier allocation (DBCA) technique by fully utilizing different visual importance of each layer in multi-layer video for broadcast/multicast services when the number of users is limited over macro/micro/femto cell environments. To ensure an acceptable video quality for edge users, the bandwidth and the loading ratio are dynamically controlled to enhance the utility through the radio resource control in accordance with the visual importance. The simulation results show that DBCA exhibits much better QoS by sending visually more important data with high priority in the cell border region.