Title :
A channel-state-dependent bandwidth allocation scheme for integrated isochronous and bursty media data in a cellular mobile information system
Author :
Lau, Vincent K N ; Kwok, Yu-Kwong
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
We introduce a novel bandwidth allocation protocol for integrated wireless isochronous (e.g., voice) and bursty (e.g., file data) media data services on the uplink channel in a cellular mobile information system. The proposed protocol is TDMA based and the uplink frame is divided into two subframes: a request subframe and an information subframe. Our scheme, called CHARISMA (Channel Adaptive Reservation-based Isochronous Multiple Access), works by first gathering users´ request via the mini-slots in the request subframe and then decides on the allocation of the information slots in the information subframe based on the channel states ranking of the mobile users. The merit of the CHARISMA protocol is that the precious bandwidth can be utilized more effectively because mobile terminals having good channel states can enjoy a higher throughput and a lower transmission error probability. The multiple access performance of the proposed MAC protocol is compared with traditional TDMA-based MAC algorithms
Keywords :
access protocols; adaptive systems; bandwidth allocation; cellular radio; error statistics; information systems; integrated voice/data communication; radio links; radio networks; telecommunication channels; time division multiple access; CHARISMA; CHARISMA protocol; MAC protocol; TDMA-based MAC algorithms; bandwidth allocation protocol; bursty media data; cellular mobile information system; cellular networks; channel adaptive reservation-based isochronous multiple access; channel states ranking; channel-state-dependent bandwidth allocation; information subframe; integrated isochronous media data; integrated wireless voice/data services; mobile terminals; mobile users; multiple access performance; request subframe; throughput; transmission error probability; uplink frame; Access protocols; Bandwidth; Channel allocation; Information systems; Media Access Protocol; Physical layer; Protection; Throughput; Time division multiple access; Wireless application protocol;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.905010