Re: [rohc] Generic scheme of list compression

Klaus Warnke <klaus.warnke@acticom.de> Tue, 11 August 2009 09:21 UTC

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Date: Tue, 11 Aug 2009 11:21:20 +0200
From: Klaus Warnke <klaus.warnke@acticom.de>
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Cc: "rohc@ietf.org" <rohc@ietf.org>
Subject: Re: [rohc] Generic scheme of list compression
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Wei,

> When ref_list has been established and the curr_list is the same as
> ref_list, could we adopt generic scheme?
No.
If ref_list and curr_list are the same, nothing has changed and
therefore no change must communicated.
The generic scheme updates the whole list. For small changes use the
other scheme, depending on the kind of change (insert, remove, insert
& remove).

> If Not, How can we Encode?
>From the de-compressor context's ref_list.

br
Klaus

cai.wei2@zte.com.cn wrote:
> "In contrast to subsequent schemes, this scheme does not rely on a
>  reference list having been established.  The entire list is sent,
>  using table based compression for each individual item. The generic
>  scheme is always used when establishing the context of the decompressor
>  and may also be used at other times, as the compressor sees fit."
>
> When ref_list has been established and the curr_list is the same as 
> ref_list,
>
> Could we adopt generic scheme? If Not, How can we Encode?
>
> Thanks!
>
>
>
> caiwei 167981
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