Media Header Extensions for Wireless Networks

Hi Sri

Thank you for the very interesting presentation at 115 last week.

I’d like to make some comments about your proposal which I think has much wider implications than ‘just’ the air interface.


  1.  We have a mechanism in LTE/6G for ensuring delivery of packets in a more expeditious manner – IMS.  It has the benefit of tying the capabilities and performance of the air interface to the packet core.  Other than for VoLTE/VoNR, we have never used its full potential!  We even have multiple classes of service defined already…


  1.  We need to channel our inner George Orwell.  ‘All [packets] are created equal, but some are more equal than others.’  Understanding the requirements of a specific application especially where the access media is highly limited is important.  Unlike wireleine, 5G/6G/whateverG are unlikely to reduce in price and increase in capacity yet Internet access is 92% over these technologies now.  We have to start understanding the applications and matching ‘network’ resources accordingly.


  1.  Each UE has a TFT as the way of steering traffic into the ‘correct’ bearer at the correct QCI/5QI.   To-date, this is very rough – simple 5-tuple – but there is no reason why this could not be expanded to take input from metadata in the manner you suggest.


So I have a proposal.


  *   We design an API between the TFT and the application which enables specific packets (e.g. the I-Frame) to be marked in some manner.
  *   This should be marked so that any encryption is maintained.
  *   By ‘application’ I think we need to consider that application = UE app + data centre app NOT a ‘app’ on the UE.
  *   Traffic which requires a higher level of handling is transported in the dedicated bearer with the correct QCI/5QI and associated radio numerology.

Outside of the scope of this group but of wider interest would be how I could maintain that QCI and packet treatment beyond the SGi/N6 interface across other packet networks to/from the data source.

All the best

David

David Lake

Tel: +44 (0)7711 736784
[Text  Description automatically generated with low confidence]
5G & 6G Innovation Centres
Institute for Communication Systems (ICS)
University of Surrey
Guildford
GU2 7XH

_______________________________________________
dmm mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/dmm