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Re: [802.3_NGECDC] NEA meeting announcement - 10BASE-T1S Differentiated Services Enhancements

Colleagues:

 

I was informed that 2 October 2025 is Yom Kippur and due to that I have moved the consensus building meeting to 9 October 2025.  The call and meeting calendar has been updated also.

 

I’m sorry for the churn

 

Cheers

 

Jon Lewis | IEEE 802.3 New Ethernet Applications Ad-Hoc Chair

 

From: Lewis, Jon <00001afc87b4053c-dmarc-request@xxxxxxxxxxxxxxxxx>
Sent: Thursday, September 18, 2025 2:31 PM
To: STDS-802-3-NGECDC@xxxxxxxxxxxxxxxxx
Subject: [802.3_NGECDC] NEA meeting announcement - 10BASE-T1S Differentiated Services Enhancements

 

Colleagues,

 

I am announcing an initial consensus building meeting on 2 9 October 2025 from 9am to 11am Eastern US time.

 

Background and Abstract.

 

The Physical Layer Collision Avoidance (PLCA) layer developed as a part of 802.3cg provides a fair and equal access over shared medium while providing bounded maximum access latency.  This method has been widely adopted in automotive Ethernet networks onto production vehicles.   The maximum access latency is not sufficiently bounded in providing deterministic latency for many of the controls applications.   

 

PLCA access method provides fair and equal access.   This consensus building presentation is to explore adding differentiated services enhancements to PLCA such that the maximum access latency is made to be deterministic, such that configured controls application loop may directly benefit from the determinism.   In this context, control loop applications have Sense --> Compute --> Actuate --> <repeat> such as power train, suspension, power assisted lift gate, etc.

 

This need has been identified in prior projects in the past.  We believe there are more than one schemes that may address this need. 

This presentation shows one such solution that may serve as a technical feasibility of providing low deterministic latency via differentiated services while preserving the fairness provided by PLCA.   If sufficient consensus is reached on the need and feasibility, the intention is to move to a Call-For-Interest (CFI) at the November plenary.

 

Meeting coordinates are on the 802.3 call and meeting calendar:  https://www.ieee802.org/3/calendar.html [ieee802.org]

 

Cheers

 

Jon Lewis | IEEE 802.3 New Ethernet Applications Ad-Hoc Chair

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