Title :
A demand-assignment access control for multi-code DS-CDMA wireless packet (ATM) networks
Author :
Liu, Zhao ; Karol, Mark J. ; El Zarki, Magda ; Eng, Kai Y.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
In a wireless packet (e.g., ATM) network that supports an integrated mix of multimedia traffic, a large variety of mobiles with different service rates will need to be accommodated efficiently in a bandwidth-on-demand fair-sharing manner. We propose and study multi-code CDMA (MC-CDMA) with distributed-queueing request update multiple access (DQRUMA) for multi-rate wireless packet networks. The network incorporates MC-CDMA (a flexible multiplexing scheme for providing multi-rate packet transmissions) and DQRUMA (an efficient demand-assignment multiple access protocol for wireless access and scheduling) to form a unified bandwidth-on-demand fair-sharing platform for multi-rate wireless services. A slot-by-slot packet transmit scheduling policy provides the possibility of slot-by-slot allocation of pseudo-noise (PN) codes (primary codes) and optimal power levels to the mobiles involved in packet transmissions. Also, a maximum capacity power allocation (MCPA) criterion is derived to exploit the subcode concatenation property of the MC-CDMA transmission. Simulation results show that the system provides close to ideal-access performance for multi-rate mobiles, both with homogeneous traffic characteristics and with a mix of heterogeneous traffic characteristics
Keywords :
asynchronous transfer mode; code division multiple access; demand assigned multiple access; land mobile radio; multimedia communication; packet radio networks; pseudonoise codes; queueing theory; scheduling; spread spectrum communication; telecommunication traffic; ATM networks; DQRUMA; bandwidth on demand fair sharing; demand assignment access control; demand assignment multiple access protocol; distributed queueing request update multiple access; heterogeneous traffic characteristics; homogeneous traffic characteristics; maximum capacity power allocation; multicode DS-CDMA wireless networks; multimedia traffic; multirate packet transmissions; multirate wireless packet networks; multirate wireless services; optimal power levels; packet radio networks; packet transmit scheduling; primary codes; pseudonoise codes; simulation results; subcode concatenation; wireless access; Access control; Access protocols; Asynchronous transfer mode; Multiaccess communication; Multicarrier code division multiple access; Multimedia systems; Personal communication networks; Streaming media; Telecommunication traffic; Traffic control;
Conference_Titel :
INFOCOM '96. Fifteenth Annual Joint Conference of the IEEE Computer Societies. Networking the Next Generation. Proceedings IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-8186-7293-5
DOI :
10.1109/INFCOM.1996.493368
