Title :
Multidimensional PRMA with prioritized Bayesian broadcast-a MAC strategy for multiservice traffic over UMTS
Author :
Brand, Alex E. ; Aghvami, A. Hamid
Author_Institution :
Center for Telecommun. Res., King´´s Coll., London, UK
fDate :
11/1/1998 12:00:00 AM
Abstract :
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. The 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
Keywords :
Bayes methods; access protocols; code division multiple access; delays; electronic mail; information resources; integrated voice/data communication; land mobile radio; multimedia communication; packet radio networks; packet reservation multiple access; radio access networks; radio links; telecommunication traffic; MAC; TD/CDMA mode; UMTS terrestrial radio access; UTRA; Worldwide Web browsing; access classes; access delay discrimination; access delay spread; code domain; data-access delay; e-mail traffic model; frequency-division duplex; load-based access control; medium-access control; multidimensional PRMA; multidimensional packet reservation multiple access; multimedia packet-type traffic; multiple-access interference control; multiservice traffic; prioritized Bayesian broadcast; prioritized Bayesian broadcast algorithm; radio interface; statistical multiplexing; time domain; time-division duplex; time-division/code-division multiple-access; uplink channel; voice traffic; voice-dropping ratio; 3G mobile communication; Bayesian methods; Delay; Electronic mail; Multiaccess communication; Multidimensional systems; Radio broadcasting; Radio control; Traffic control; World Wide Web;
Journal_Title :
Vehicular Technology, IEEE Transactions on
