Title :
UMTS Release 99/4 airlink enhancement for supporting MBMS services
Author :
Chuah, M. ; Hu, Teck ; Luo, W.
Author_Institution :
Lehigh Univ., Bethlehem, PA, USA
Abstract :
In this paper, we first describe the UMTS architecture for supporting MBMS. Then, we describe various airlink options for carrying multicast traffic in UMTS Release 99/4 system. One can carry it over FACH or DSCH channel. We discuss why DSCH channel is not an attractive solution. Then, we discuss how rate splitting, longer TTI and STTD techniques can be used to reduce the power requirement of delivering multicast traffic over the FACH channel for MBMS users. Another possibility is to use a combination of multicast as well as dedicated channels to serve all MBMS users. Some users who are in bad conditions are served using dedicated channels and those who are in relatively good conditions are served using a multicast channel. Last but not least, we present simulation results to give us an idea of how much power is required to support MBMS.
Keywords :
3G mobile communication; broadcast channels; multicast communication; multimedia communication; telecommunication traffic; UMTS Release 99/4 system; airlink enhancement; dedicated multicast channel; downlink shared channel; forward access channel; multicast traffic; multimedia broadcast multicast services; rate splitting; 3G mobile communication; Architecture; Bandwidth; Communication system security; Delay; Digital multimedia broadcasting; Distance learning; Multicast communication; Multimedia communication; Wireless networks;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1313141
