NDLI: An opportunistic MAC protocol for multiple code channels DS-CDMA wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Chi-Ming Wong Wen-Pin Lex Hsu Ren-Horn Hsieh
Copyright Year	2008
Description	Author affiliation: Dept. of Mech. Eng., Technol. & Sci. Inst. of Northern Taiwan, Taiwan (Ren-Horn Hsieh) \|\| Dept. of Electron. Eng., Jinwen Univ. of Sci. & Technol., Taipei, Taiwan (Chi-Ming Wong) \|\| Dept. of Comput. Sci. & Inf. Eng., ChungChou Inst. of Technol., Taiwan (Wen-Pin Lex Hsu)
Abstract	We propose a contention based medium access control (MAC) protocol which will extend traditional single channel wireless network such as IEEE 802.11 distributed coordination function (DCF) to be used in multiple code channels direct sequence code division multiple access (DS-CDMA) wireless networks. The DCF is a special case in our proposed MAC protocol. We assume the system exist a maximum allowable simultaneously transmissions M which is dependent on the degree of multiple access interference (MAI). To control the access of multiple code channels in DS-CDMA wireless network, we define the channel regulation (CR) which is smaller than M and three channel states which are random access (RA) state, CR state and busy state respectively. The channel is in RA state, CR state and busy state whenever simultaneously transmissions are smaller than CR, between CR and M and larger than M respectively. Nodes can randomly access channel whenever they detect RA state and do p-persistent transmission while CR state is detected. If channel is detected in busy state, nodes have to run backoff algorithm to prepare next time of transmission. The simulation results show that the proposed MAC protocol algorithm performs very well.
Starting Page	1125
Ending Page	1129
File Size	131117
Page Count	5
File Format	PDF
ISBN	9781424424238
DOI	10.1109/ICCS.2008.4737358
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Media Access Protocol Wireless application protocol Multiaccess communication Wireless networks Access protocols Multiple access interference Chromium Signal processing algorithms Access control Direct-sequence code-division multiple access p-persistent CSMA channel regulation (CR) medium access control (MAC) direct sequence code division multiple access (DS-CDMA) carrier sense multiple access (CSMA)
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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