rohc team mailing list archive

[Josephine Kakande <jnkakande@xxxxxxxxx>]

On Fri, Aug 28, 2009 at 2:27 PM, cedric baudoin <cedric.baudoin@xxxxxxx>wrote:

> Dear all,
>
> 2009/8/27 Didier Barvaux <didier.barvaux@xxxxxxxxxxxxxxxxxxxx>
>
>> Hi Josephine,
>>
>> > I'm trying to come up with an implementation, using the ROHC library,
>> > that compresses only the RTP header, and not the UDP and IP headers.
>>
>> As far as I know, there is no defined profile for RTP-only compression.
>> So you have to define the mechanisms and packet formats you want to
>> use. The ones defined for IP/UDP/RTP are probably not adequate for your
>> RTP-only profile.
>
>
> True. Defining a RTP only profile will not allow to benefit from redundancy
> between the different layers (only redundancy between RTP fields of the same
> flow will be used) and thus will lead to a lower efficiency. What is your
> use case ?
>
> best regards
>
> Cédric Baudoin
> Research Department
> Thales Alenia Space
>
> Hi Cedric,

Thanks for the feedback. You're right, it'll certainly not be as bandwidth
efficient as compression of multiple headers. It's one means though of going
beyond hop-by-hop compression to achieve end-to-end compression; I'm looking
at it partly  from that angle..

Regards,
Josephine