Call 4/5/16 notes
Folks,
Sorry for late notes.. it has been busy lately. let me know if I missed
something.
Start: 4/5/2016 10:00 PDT
End: 4/5/2016 ~11:15 PDT
Present:
Jouni Korhonen
Kevin Bross
Ofir Mahazri
Richard Tse
Stuart Whitehead
Xhafer Kraniqi
Yasser Bajwa
Richard Maiden
Steinar Bjornstad
Joern-Peter Elberg
Ralph Bechstein
Actual agenda:
* data path vs control path for timing of radio data (Richard Tse)
Discussion:
* Richard Tse went through his slides on TS and SN in a same packet
using data path versus control packets. See the posted slides:
http://www.ieee1904.org/3/email/msg00451.html
* Examples of the different time domains and Ethernet network running
different clock (including different time scales).
* One target is to transfer the clock over other clock domains.
Same use case and need has been identified also in CPRI over OTN
work in ITU-T.
* It was still unclear for some people that the assumption here was
that the Ethernet provider would also do the CPRI-2-RoE conversion,
not the telco originating the CPRI feed.
* Discussion also whether this could be done with timestamps only, thus
no need to have both timestamps and sequence numbers in the packet.
* More data is needed on this and Kevin said to send his comments to
the list:
http://www.ieee1904.org/3/email/msg00459.html and the response
http://www.ieee1904.org/3/email/msg00461.html
* Richard Tse to provide more info on the actual use cases.
* Short discussion concerning the pktType related to the mail from
Glen on the IEEE1904.2 EtherType. The IEEE P1904.3 TF has to look
at possible implications to RoE header (version + pktType fields).
Next Call:
* 4/19/2016 8AM PDT (we are back to our normal time).