Simple Reduced Feedback Multicast Schemes for Mobile Networks

Grace Wensan Lee, Ting Yu Lin, Tsern Huei Lee, Alex C.C. Hsu

研究成果: Conference contribution同行評審

摘要

The rapid growth of video traffic over mobile networks in recent years, including live streaming, prompted 3GPP to define a broadcast/multicast mode for LTE called evolved multimedia broadcast/multicast service (eMBMS). One of the schemes of eMBMS, called single-cell point-to-multipoint (SC-PTM), can flexibly multiplex multicast traffic with unicast traffic. In the current standard, the most robust modulation and coding scheme (MCS) is adopted by the evolved Node B (eNB) when transmitting multicast data to user equipments (UEs) so that most UEs can decode data correctly. In this paper, we present and compare two multicast schemes with limited feedbacks for SC-PTM. In the first scheme, only one channel is allocated for UEs to send NAKs while in the second scheme, two channels are used for UEs to send separately ACKs and NAKs. Results show that by dynamically adjusting the MCS based on feedbacks, the total throughput could increase dramatically. Moreover, the scheme with two feedback channels outperforms the one with only one feedback channel. The radio resource consumed by the two-feedback-channel scheme is less than 1% of the original scheme defined in the standard.

原文English
主出版物標題ISPACS 2018 - 2018 International Symposium on Intelligent Signal Processing and Communication Systems
發行者Institute of Electrical and Electronics Engineers Inc.
頁面231-236
頁數6
ISBN(電子)9781538657713
DOIs
出版狀態Published - 11月 2018
事件2018 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2018 - Ishigaki Island, Okinawa, Japan
持續時間: 27 11月 201830 11月 2018

出版系列

名字ISPACS 2018 - 2018 International Symposium on Intelligent Signal Processing and Communication Systems

Conference

Conference2018 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2018
國家/地區Japan
城市Ishigaki Island, Okinawa
期間27/11/1830/11/18

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