Multidimensional PRMA with prioritized Bayesian broadcast - A MAC strategy for multiservice traffic over UMTS

被引:65
作者
Brand, AE [1 ]
Aghvami, AH [1 ]
机构
[1] Univ London Kings Coll, Ctr Telecommun Res, London WC2R 2LS, England
基金
英国工程与自然科学研究理事会;
关键词
CDMA; MAC; prioritization; PRMA; stabilization; traffic models; UMTS;
D O I
10.1109/25.728486
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Multidimensional packet reservation multiple access is proposed as a medium-access control (MAC) strategy for the uplink channel of the UTRA (UMTS terrestrial radio access) time-division/code-division multiple-access (TD/CDMA) mode to benefit from efficient statistical multiplexing on the large common pool of available resources (i.e., slots defined both in time and code domain). A prioritized Bayesian broadcast algorithm is derived to stabilize multidimensional packet reservation multiple access (MD PRMA) and to allow for access delay discrimination of four different access classes. Access delay spread can be selected, and trading voice-dropping ratio against data-access delay is possible, To control multiple-access interference, Bayesian broadcast can be combined with load-based access control. Performance of both frequency-division duplex (FDD) and time-division duplex (TDD) mode is evaluated, the latter particularly relevant for TD/CDMA. For mixed voice, worldwide web (WWW) browsing, and e-mail traffic, the UMTS WWW model is used, while the e-mail traffic model is derived here.
引用
收藏
页码:1148 / 1161
页数:14
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