Physical Layer Collision Avoidance
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The Physical Layer Collision Avoidance (abbreviated PLCA) is an enhancement over the CSMA/CD shared-media access method. It was designed to provide deterministic performance on (small) half-duplex multi-drop Ethernet networks to satisfy the real-time requirements of many modern industrial and automotive applications.
PLCA is defined as a Reconciliation Sublayer (RS) in Clause 148 of the IEEE 802.3cg-2019 specification[1], which amends the IEEE Std. 802.3-2018[2].
The PLCA method was invented by Piergiorgio Beruto and Antonio Orzelli (US patent 10925097B2, Beruto, Piergiorgio & Antonio Orzelli, "Method for preventing physical collision on ethernet multidrop networks", published 2021-02-16, issued 2021-01-27).
History[edit]
TODO: well, it is a short one!
PLCA in a nutshell[edit]
TODO: overview, working principle, etc.
Performance[edit]
TODO: show measurements & simulations, show comparison with TDMA and CSMA/CD
Additional Features[edit]
TODO: burst mode & others
Software support[edit]
TODO: PLCA is supported by Linux since kernel 6.x
Temporary - sources to be cited[edit]
Automotive Ethernet Book Third Edition [3]
References[edit]
- ↑ "IEEE Standard for Ethernet - Amendment 5: Physical Layer Specifications and Management Parameters for 10 Mb/s Operation and Associated Power Delivery over a Single Balanced Pair of Conductors". doi:10.1109/ieeestd.2020.8982251.
- ↑ "IEEE Standard for Ethernet". doi:10.1109/ieeestd.2018.8457469.
- ↑ Matheus, Kirsten; Königseder, Thomas (2021). Automotive Ethernet (3rd ed.). Cambridge, United Kingdom: Cambridge University Press. ISBN 978-1-108-89524-8. OCLC 1196820826. Search this book on
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