Paper Info
Title
A novel multicast scheme for feedback-based multicast services over wireless networks.
Abstract
Recently, a point-to-multipoint transmission is a promising technology in the limitation of wireless resources and surging of subscribers, and an optimal to deliver real-time streaming service such as video/audio conference, digital live cast, and so on. There are two types of point-to-multipoint transmission; broadcast and multicast. Broadcast services deliver the information to all receivers in a cell and multicast services deliver the information to a multicasting group. Traditional approaches to multicast services operate by radiating transmission power with the lowest modulation level and coding rate which may be much lower than the lowest acceptable rate for all the multicast subscribers of a multicasting group. While such an approach has the advantage of simple implementation, this method may incur substantial performance penalties such as low spectral efficiency and a large amount of power consumption. To solve this issue, wireless multicasting with channel state information has been investigated in many research studies. However, the overhead of feedback information is a heavy drawback to the achievement of good network performance. In feedback-based multicast services, the system performance is also mostly dependent on the receivers with the lowest channel quality in a multicasting group. Hence, receivers who have better channel condition can receive multicast data successfully without channel quality indicator (CQI) feedback. In this point of view, the feedback-based multicast scheme should aim to achieve high resource efficiency by reducing unnecessary CQI feedback and transmission optimization by dynamically adapting modulation and coding selection (MCS) level according to the variations of the channel state. We show that the proposed scheme enhances the system throughput by dynamically adapting the MCS level according to variations of the CQI and also reduce CQI feedback by transiting from a feedback state to a non-feedback state according to a channel gain and recent frame error rate of each receiver. Finally, the proposed scheme does not need any additional control signaling overhead and also can be expanded and employed in any kind of systems, such as WCDMA, WiMAX, LTE, and LTE-Advanced.
Year
DOI
Venue
2013
10.1186/1687-1499-2013-52
EURASIP J. Wireless Comm. and Networking
Keywords
Field
DocType
multicast services, channel state information, channel quality indicator, feedback reduction
Source-specific multicast,Protocol Independent Multicast,Multimedia Broadcast Multicast Service,Multicast address,Computer science,Xcast,Computer network,Real-time computing,Pragmatic General Multicast,Multicast,IP multicast
Journal
Volume
Issue
ISSN
2013
1
1687-1499
Citations 
PageRank 
References 
11
0.43
10
Authors
3
Name
Order
Citations
PageRank
Kyung-Ho Sohn1143.50
HanSeok Kim2796.85
Yong-Young Kim315429.09