Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

Re: [802.3_EPLCA] questions following the presentation "EPLCA – Technical Feasibility Study"

Hi Dolly,

 

  1. Yes, it is a copy paste error, there should not be any scheduling at PLCA cycle-14 for Node6 Class-B traffic.
  2. Yes, 2500 bytes is the theoretical peek performance. I should have used approximate ~2400 bytes. There are additional overheads like Beacon and TO to TO delay (which depends on the receiver-delay/additional commits) and hence I added 100 bytes margin. This could be still optimistic; the following demo shows 1024 bytes (4-nodes * 4-bursts * 64bytes) in 1.72ms, hope the 64-byte is application data payload only and does not include the additional ethernet headers.

                    https://standards.ieee.org/wp-content/uploads/2025/10/D1_02_Yuki-Wakida-Feasibility-Study-of-Scalable-In-Vehicle-Network-Deployment-FINAL.pdf

 

Thx,
Arvind.

 

 

 

From: zhuyue (A) <zhuyue1@xxxxxxxxxxx>
Sent: Thursday, October 1, 2026 7:32 PM
To: STDS-802-3-EPLCA@xxxxxxxxxxxxxxxxx
Subject: [802.3_EPLCA] questions following the presentation "EPLCA – Technical Feasibility Study"

 

Hi Arvind,

Thank you for your presentation at the ad hoc. I have two quick questions:

  1. I think there may be a typo in the table on slide 6. Looking at the 11th row, which indicates the TO allocation for node 6: since node 6’s Class B traffic gets a TO only once every 16 PLCA cycles, shouldn’t the TO allocated to Class B under PLCA cycle 14 be redundant?
  2. On slide 8, you mentioned that a 2-millisecond PLCA cycle can carry 2400 bytes including the header. However, 2 milliseconds at 10 megabits per second is actually 20 kilobits = 2500 bytes. I’d like to know what other transmissions the 100-byte difference is used for.

Thanks again for the presentation. I’d appreciate your thoughts when you have a chance.

Best,

Dolly (Zhu, Yue)

Yinwang Intelligent Technologies Co., Ltd. (Huawei’s automotive business subsidiary)

Email: zhuyue1@xxxxxxxxxxx

 

 

 

 

To unsubscribe from the STDS-802-3-EPLCA list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-EPLCA&A=1

To unsubscribe from the STDS-802-3-EPLCA list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-EPLCA&A=1