DocumentCode :
806625
Title :
Design issues of uplink media access control (MAC) protocols for multimedia traffic over DS-CDMA systems
Author :
Wang, Lin ; Aghvami, A. Hamid ; Chambers, Williams G.
Author_Institution :
Center for Telecommun. Res., King´´s Coll. London, UK
Volume :
7
Issue :
3
fYear :
2005
fDate :
6/1/2005 12:00:00 AM
Firstpage :
551
Lastpage :
562
Abstract :
We propose an efficient uplink media access control (MAC) protocol for a variable spreading gain interference-limited wideband CDMA system. It can, with high spectral efficiency, support both real-time traffic like speech and video and also nonreal-time data traffic based on packet transmission. The schemes for power allocation, joint scheduling, and transmission rate adaptation for nonreal time data traffic are designed as integrated parts of the MAC, working together to improve the system performance in terms of capacity and delay. With these associated resource management mechanisms, the performances of the MAC protocol with two different channel-allocation methods for real-time traffic are numerically compared. One is demanding channel allocation, and the other is reserve channel allocation, in which a certain bandwidth is reserved for concurrent real-time traffic.
Keywords :
bandwidth allocation; channel allocation; code division multiple access; mobile communication; multimedia communication; spread spectrum communication; telecommunication traffic; DS-CDMA; MAC protocol; channel allocation methods; gain interference-limited wideband CDMA system; joint scheduling; multimedia traffic; nonreal time data traffic transmission rate adaptation; packet transmission; power allocation; resource management mechanisms; uplink media access control protocols design; Channel allocation; Delay effects; Gain; Interference; Media Access Protocol; Multiaccess communication; Multimedia systems; Speech; System performance; Wideband; CDMA; media access control (MAC); multimedia;
fLanguage :
English
Journal_Title :
Multimedia, IEEE Transactions on
Publisher :
ieee
ISSN :
1520-9210
Type :
jour
DOI :
10.1109/TMM.2005.846786
Filename :
1430730
Link To Document :
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