Re: [nmrg] network digital twin vs. digital twin network

[Jürgen Schönwälder <[e-mail]>]

My naive understanding of the English language is that an "electric
car" is a special kind of car and a "software defined network" is a
special kind of a network, Hence, a special kind of a digital twin
would be ...

/js

On Wed, Mar 08, 2023 at 09:04:12PM +0800, Cheng Zhou wrote:
> Hi All, 
> 
>  
> 
> As Diego mentioned, we have discussed this topic some time ago. I remembered
> that the conclusion was to remove acronym ‘DTN’ to avoid conflict with
> ‘Delay/Disruption Tolerant Networking’ (a working group of IETF).  However,
> we didn’t decide to change the term of ‘digital twin network’. 
> 
> As one of the coauthors, I am open on both names. However, I still prefer to
> use ‘digital twin network’ with below concerns. 
> 
> 1)      Network is the target filed to implement Digital Twin technology.
> As DT used in other industrial fields, similar terms  ‘DTxx ‘ are being
> used, such as ‘digital twin city’, ‘digital twin manufacturing’, ‘digital
> twin factory’, ‘digital twin energy’, etc. The terms are with same meaning
> as ‘DT for xxx’. And in definition of current draft, we also pointed that
> ‘digital twin network’ is also called digital twin for networks.’  
> 
> Digital twin network: a digital twin that is used in the context of
> networking. This is also called, digital twin for networks. 
> 
> 2)      If not considering the acronym confliction, DTN can be a better
> acronym for a relatively systematic networking technology, such as SDN, CDN,
> IBN, TSN, etc.   
> 
> 3)      In academy, both NDT and DTN can be seen. And, the there seems a bit
> more papers using of ‘DTN/digital twin network’ or the extensions, such as
> ‘digital twin edge network’, ‘digital twin optical network’, ‘digital twin
> 5G network’, etc. And from extension perspective, DTN seems more easily to
> be extended to specific network domains, with terms of DTxN.
> 
> 4)      In some other SDOs such as ITU-T, 3GPP, the term of ‘Digital twin
> network’ is being used. 
> 
>  
> 
> Regarding the difference between ‘digital twin network’ and ‘network digital
> twin’ in this draft,  DTN can be the whole interactive virtual-real mapping
> system, building with the DT concept or techniques; and NDT can be the
> twinning entity of the physical network, focusing on data and models in
> digital twin layer. Hope this can help remove the confusion. 
> 
>  
> 
> More comments are welcome. 
> 
>  
> 
> Thank and Best Regards,
> 
> Cheng Zhou
> 
>  
> 
> From: nmrg [mailto:[e-mail]] On Behalf Of Diego R. Lopez
> Sent: Tuesday, March 7, 2023 11:01 PM
> To: Christopher Janz; Jürgen Schönwälder; [e-mail]
> Subject: Re: [nmrg] network digital twin vs. digital twin network
> 
>  
> 
> Hi,
> 
>  
> 
> Thanks for the observation and the recommendations.
> 
>  
> 
> As one of the coauthors, let me say we already went through this discussion
> some time ago, and my reckoning is that the use of the term DTN, initially
> employed, was caused by some language misunderstanding, and that we all
> agreed on moving towards the more adequate NDT. If there are still remnants
> of the old naming in the document, this is something that obviously needs to
> be solved.
> 
>  
> 
> Be goode,
> 
>  
> 
> --
> 
> “Esta vez no fallaremos, Doctor Infierno”
> 
>  
> 
> Dr Diego R. Lopez
> 
> Telefonica I+D
> 
>  <https://www.linkedin.com/dr2lopez/> https://www.linkedin.com/dr2lopez/
> 
>  
> 
> e-mail:  <mailto:[e-mail]> [e-mail]
> 
> Mobile: [phone]
> 
> ---------------------------------
> 
>  
> 
> On 7/3/23, 15:38, <[e-mail]> wrote:
> 
>  
> 
> Good observation Juergen. I'll let the authors of [1] speak with respect to
> their document, but looking elsewhere (e.g., ETSI ZSM, papers, etc.) as well
> as at normal English language usage:
> 
> - the digital twin of a network is properly a 'network digital twin' - this
> is the clear native interpretation of the term as well as the broadly used
> sense.
> - 'digital twin network' does not broadly have the connotation you suggest
> (a network operated by a digital twin), nor does the term intrinsically
> suggest such a meaning. If anything, the term suggests a network used in the
> implementation of a digital twin. I'd thus suggest the term is not a very
> useful one.
> 
> Best
> 
> Chris
> 
> 
> -----Original Message-----
> From: nmrg <[e-mail]> On Behalf Of Jürgen Schönwälder
> Sent: Tuesday, March 7, 2023 9:28 AM
> To: [e-mail]
> Subject: [nmrg] network digital twin vs. digital twin network
> 
> Hi,
> 
> I see both terms being used in [1] but only one of them is defined and I am
> a bit confused about what the exect difference is between these two terms.
> Perhaps both should have a clear and explicit definition?
> 
> Naively, I assumed that the digitial twin of a network would be called a
> 'network digital twin' and that a network that is operated by using digital
> twins as a 'digital twin network' but that does not seem to align with what
> [1] says.
> 
> /js
> 
> [1] <draft-irtf-nmrg-network-digital-twin-arch-02>
> 
> -- 
> Jürgen Schönwälder              Constructor University Bremen gGmbH
> Phone: [phone]         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   [phone]         <https://constructor.university/>
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-- 
Jürgen Schönwälder              Constructor University Bremen gGmbH
Phone: [phone]         Campus Ring 1 | 28759 Bremen | Germany
Fax:   [phone]         <https://constructor.university/>