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Titolo:
A CSMA/CD compatible MAC for real-time transmissions based on varying collision intervals
Autore:
Sharon, O; Spratt, M;
Indirizzi:
Univ Haifa, Dept Math, IL-31905 Haifa, Israel Univ Haifa Haifa Israel IL-31905 aifa, Dept Math, IL-31905 Haifa, Israel HP Labs, Network Tech Dept, Bristol, Avon, England HP Labs Bristol Avon England , Network Tech Dept, Bristol, Avon, England
Titolo Testata:
COMPUTER NETWORKS-THE INTERNATIONAL JOURNAL OF COMPUTER AND TELECOMMUNICATIONS NETWORKING
fascicolo: 2-3, volume: 35, anno: 2001,
pagine: 117 - 142
SICI:
1389-1286(200102)35:2-3<117:ACCMFR>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTEGRATED SERVICES; PERFORMANCE; PROTOCOL; 10BASE-T; NETWORKS;
Keywords:
ethernet; CSMA/CD; real-time traffic; broadcast networks; home LAN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Sharon, O Univ Haifa, Dept Math, IL-31905 Haifa, Israel Univ Haifa HaifaIsrael IL-31905 Math, IL-31905 Haifa, Israel
Citazione:
O. Sharon e M. Spratt, "A CSMA/CD compatible MAC for real-time transmissions based on varying collision intervals", COMPUT NET, 35(2-3), 2001, pp. 117-142

Abstract

This paper suggests a CSMA/CD compatible MAC protocol for real-time transmissions in a shared Home or Small Office Local Area Network. The new MAC isbased on the distributed assignment of special TAG numbers to the stationstransmitting real-time traffic. These TAG numbers determine a Round Robin order of transmissions among the real-time stations. They also help in resolving collisions among real time stations by setting the length of the Jam signal, transmitted in case of a collision, to be a function of the TAG number. In a collision the station with the highest TAG number, and so with the longest Jam, is persisting with its Jam transmission for the longest until all the other stations defer. Thus, the collision terminates and the longest persisting station can transmit its packet successfully. The new protocol enables stations implementing the IEEE 802.3 MAC standard to transmit onthe same network with stations implementing the new protocol. After introducing the protocol, we compute an upper bound on the access delay that the protocol guarantees and prove the correctness of the distributed TAG assignment procedure. Finally, we simulate the protocol in a network consisting stations implementing the new protocol together with stations implementing the standard IEEE 802.3 MAC. We show that the access delays of the stations transmitting real-time traffic are indeed bounded as predicted. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 28/01/20 alle ore 14:47:31