Opportunistic multicasting for single frequency networks

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題名:	Opportunistic multicasting for single frequency networks
作者:	黃志煒;Polacek, Pavol;Yang, Ting‐Yeu;Huang, Chih‐Wei
貢獻者:	資訊電機學院通訊工程學系
關鍵詞:	Adaptation;Coding;Efficiency;feedback reduction;LTE MBSFN;Modulation;Multicast;Multicasting;Networks;opportunistic multicasting;Streams;video multicast;wireless communications
日期:	2016-10-25
上傳時間:	2026-04-23 13:04:43 (UTC+8)
出版者:	Hindawi Limited;Oxford: John Wiley & Sons, Inc
摘要:	摘要： With the growth of multimedia traffic over mobile networks, multicast becomes one of more effective transmission approaches to be widely considered. The Multimedia Broadcast multicast service Single Frequency Network (MBSFN) has been introduced for long term evolution to improve signal‐to‐interference‐plus‐noise ratio at the cell edges, while selecting efficient modulation and coding schemes (MCS) for transmission is still an open issue. Unlike existing solutions in literature, the opportunistic multicasting concept is adopted in this work to aggressively enhance the spectrum efficiency (SE) of single frequency networks. Based on the derived model of effective SE in extended MCS adaptation intervals, we propose a statistical feedback‐based approach to achieve opportunistic multicasting in MBSFN. The algorithm carefully selects the MCS complying with the adaptation need for channel quality changes and enabling high bottleneck user SE under reduced feedbacks. Comparing with other schemes for a single stream setup, the simulations show up to 340% higher SE over non‐opportunistic method and 25% over the second best method maximizing the average SE. The number of successfully transmitted streams in a multi‐stream scenario increased by 250% over the non‐opportunistic approach and 40% over the average SE maximizing approach. Copyright © 2016 John Wiley & Sons, Ltd. Based on the derived model of effective spectrum efficiency in extended modulation and coding schemes adaptation intervals, we propose a statistical feedback‐based approach to achieve opportunistic multicasting in Multimedia Broadcast multicast service Single Frequency Networks. The algorithm carefully selects the modulation and coding schemes complying with the adaptation need for channel quality changes and enabling high bottleneck user spectrum efficiency under reduced feedbacks. The number of successfully transmitted streams increased by 250% over the non‐opportunistic approach. 出版者： Oxford: John Wiley & Sons, Inc 出版日期： 2016-10-25 出處： Wireless communications and mobile computing, 2016-10, Vol.16 (15), p.2253-2262 版權： Copyright © 2016 John Wiley & Sons, Ltd. 識別號： ISSN: 1530-8669 識別號： EISSN: 1530-8677 識別號： DOI: 10.1002/wcm.2680
顯示於類別:	[通訊工程學系] 期刊論文

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