Dynamic code reservation multiple access for supporting various-bit-rate integrated traffics in slotted DS-CDMA systems

Authors:
E. -H. Jeong;A. -R. Khil;M. -K. Kim;S. -R. Maeng
Affiliations:
Department of Computer Science Korea Advanced Institute of Science and Technology 373-1, Kusong-Dong, Yusung-Gu, Taejon 305-701, South Korea;Department of Computer Science, Soongsil University 1-1, Sangdo-5Dong, Dongjak-Gu, Seoul 156-743, South Korea;School of Computer Engineering and Information Technology, University of UIsan, MuGeo-2Dong, Nam-Gu, Ulsan 680-749, South Korea;Department of Computer Science Korea Advanced Institute of Science and Technology 373-1, Kusong-Dong, Yusung-Gu, Taejon 305-701, South Korea
Venue:
Computer Communications
Year:
2000

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Abstract

Recently, several works have been proposed for media access control protocols which are based on slotted direct-sequence code-division multiple-access and support integrated traffics. In this paper, we propose dynamic code reservation multiple access (DCRMA) which can enhance the previous works. DCRMA extends a minislot technique to the integrated traffic environment and supports connection-oriented and connectionless traffic with various bit rates. Additionally, DCRMA develops a simultaneous transmission scheme to reduce average message transmission delay for connectionless traffic. Packet dropping probability is analyzed for connection-oriented traffic with various bit rates using an embedded Markov chain model. Simulations are also performed to further investigate the integration of connection-oriented and connectionless traffics.