Title :
Reduced Feedback Schemes for LTE MBMS
Author :
Cai, Yi ; Lu, Shan ; Zhang, Li ; Wang, Chunye ; Skov, Peter ; He, Zhiqiang ; Niu, Kai
Author_Institution :
Inf. Theor. & Technol. Center, Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In radio resource management of multimedia broadcast/multicast service (MBMS), user equipment (UE) feedback can be used by evolved Node B (eNB) to improve the radio spectral efficiency. As UE feedback is costly we here suggest schemes to reduce the uplink feedback while maintaining the spectral efficiency. For the 3 schemes analyzed in this paper we utilize the special characteristic of a broadcast channel, that spectral efficiency is mainly determined by the UE with lowest channel quality. The performance of the suggested schemes are evaluated with long term evolution (LTE) system simulation and we conclude that using geometry for selecting feedback UEs is the optimal solution and 4 feedback UEs are enough to meet the coverage requirement.
Keywords :
broadcast channels; multicast communication; multimedia communication; radio spectrum management; LTE MBMS; broadcast channel; channel quality; long term evolution system; multicast service; multimedia broadcast service; radio resource management; radio spectral efficiency; uplink feedback; user equipment feedback; Digital multimedia broadcasting; Helium; Information theory; Long Term Evolution; Modulation coding; Multimedia communication; Radio broadcasting; State feedback; System performance; Throughput;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073829
