W-CDMA random access channel transmission over satellite-UMTS

被引：0
|
作者：
Kueh, VYH [1 ]
Capellacci, A [1 ]
Tafazolli, R [1 ]
Evans, BG [1 ]
机构：
[1] Univ Surrey, CCSR, Guildford GU2 7XH, Surrey, England
来源：
5TH INTERNATIONAL SYMPOSIUM ON WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS, VOLS 1-3, PROCEEDINGS | 2002年
关键词：
W-CDMA; random access channel; access service class; Satellite-UMTS;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
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 RA CH 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.
引用
收藏
页码：459 / 463
页数：5
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