Title :
W-CDMA random access channel transmission over satellite-UMTS
Author :
Kueh, V.Y.H. ; Capellacci, A. ; Tafazolli, R. ; Evans, B.G.
Author_Institution :
Centre for Commun. Syst. Res., Surrey Univ., Guildford, UK
Abstract :
The random access channel (RACH) is an uplink transport channel defined in UMTS for initial channel access to the network as well as for sending short data bursts. The RACH structure and procedure as defined by 3GPP are not directly applicable for satellite-UMTS (S-UMTS) due to the different characteristics of the satellite channel. Based on the optimized schemes proposed for S-UMTS RACH, this paper investigates the issue of assigning services with different quality of service (QoS) requirements to different access service classes (ASCs). Such service differentiation is required in third generation wireless systems where multiple service classes with different QoS parameters are to be supported. Via simulations, it is shown that service differentiation is possible through appropriate RACH resource allocation among these different ASCs.
Keywords :
3G mobile communication; broadband networks; code division multiple access; mobile satellite communication; optimisation; quality of service; radio links; radio networks; random processes; 3GPP; QoS parameters; RACH resource allocation; RACH structure; S-UMTS; W-CDMA random access channel transmission; access service classes; optimized schemes; satellite channel; satellite-UMTS; service differentiation; short data bursts transmission; simulations; third generation wireless systems; uplink transport channel; 3G mobile communication; Delay; Internet telephony; Multiaccess communication; Quality of service; Resource management; Satellites; Streaming media; Telecommunications; Web and internet services;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088216
