code point for ULE

[Bernhard Collini-Nocker <bnocker@cosy.sbg.ac.at>]

Dear list members,

the ipdvb wg chairperson has asked to start a discussion on the topic of 
a reasonable code point to identify an ULE "stream" in an MPEG-2 
transport multiplex.

Let me start the discussion with a proposal for two approaches:

A1. go for DVB-SI and include the data_broadcast_id for ULE in the 
data_broadcast_descriptor() in PMT. There has been advise by the 
chairman of the DVB-GBS group that such an ULE id could be self 
registered on the DVB website. However, a responsible person an 
organisation (likely a DVB member) needs to be named.

Q1.1: who should/would be the registrar?
Q1.2: would it then ALSO be OK/neccessary to request to
ARIB and ATSC?
Q1.3: should the id be similar or identical among the standards?

A2. go for MPEG-2 PSI and request a stream_type for ULE to be included 
in the PMT. However, to my current knowledge "a registration in the 
official area is not foreseen as long as no commercial requirements are 
present".
Q2.1: is anyone willing/interested to sum up commercial requirements for 
having ULE as "standard" stream type and can raise this issue in the 
releveant standardization body?
Q2.2: if approach 1 is easier to achieve should approach 2 still be 
followed?

In my view both approaches can be followed in parallel and there is no 
need to do one exclusively.

What is your opinion? Any other approaches that should be taken into 
cosnideration? Any concerns with one or all of the approaches?


Regards,
Bernhard