Referenced Items are not available for this document.
This paper presents PCSMA, an extension to the CSMA/CD protocol (used in the Ethernet) to support both conventional datagram traffic and real-time traffic. The protocol provides predictable packet-delivery bounds for real-time traffic. It does not require changes to existing Ethernet controllers for datagram traffic. Under the new protocol, periodic sources follow a variation of the CSMA protocol that requires them to reserve transmission slots before they can begin transmission. This protocol is intended particularly for use in the integrated network in a manufacturing shop. Periodic sources include multiple sensors generating disparate types and rates of data. We have carried out an extensive performance evaluation of the protocol using a simulation model. The results are impressive: PCSMA shows fewer collisions than CSMA, equivalent delays for conventional traffic, and no failures to meet deadlines for periodic traffic
Published in:
Systems, Man and Cybernetics, IEEE Transactions on
(Volume:24
,
Issue:
8
)
Date of Publication: Aug 1994
- Page(s):
- 1247 - 1258
- ISSN :
- 0018-9472
- INSPEC Accession Number:
- 4756453
- Digital Object Identifier :
- 10.1109/21.299705
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Aug 1994
- Sponsored by :
- IEEE Systems, Man, and Cybernetics Society
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