TY - GEN
T1 - Simple Reduced Feedback Multicast Schemes for Mobile Networks
AU - Lee, Grace Wensan
AU - Lin, Ting Yu
AU - Lee, Tsern Huei
AU - Hsu, Alex C.C.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/11
Y1 - 2018/11
N2 - 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.
AB - 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.
KW - SC-PTM
KW - eMBMS
KW - reduced feedback
KW - throughput
UR - http://www.scopus.com/inward/record.url?scp=85077020804&partnerID=8YFLogxK
U2 - 10.1109/ISPACS.2018.8923560
DO - 10.1109/ISPACS.2018.8923560
M3 - Conference contribution
AN - SCOPUS:85077020804
T3 - ISPACS 2018 - 2018 International Symposium on Intelligent Signal Processing and Communication Systems
SP - 231
EP - 236
BT - ISPACS 2018 - 2018 International Symposium on Intelligent Signal Processing and Communication Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2018
Y2 - 27 November 2018 through 30 November 2018
ER -