Re: [6tsch] Mobility in 6TSCH

Qin Wang <qinwang@berkeley.edu> Sat, 27 July 2013 14:52 UTC

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Date: Sat, 27 Jul 2013 22:52:04 +0800
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From: Qin Wang <qinwang@berkeley.edu>
To: Xavier Vilajosana Guillen <xvilajosana@eecs.berkeley.edu>
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Cc: Thomas Watteyne <watteyne@eecs.berkeley.edu>, "Pascal Thubert \(pthubert\)" <pthubert@cisco.com>, Alfredo Grieco <alfredo.grieco@gmail.com>, "6tsch@ietf.org" <6tsch@ietf.org>
Subject: Re: [6tsch] Mobility in 6TSCH
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+1 on "relocation"

Qin


On Sat, Jul 27, 2013 at 7:42 PM, Xavier Vilajosana Guillen <
xvilajosana@eecs.berkeley.edu> wrote:

> +1 for relocation,
>
> "node relocation"
>
> IMHO is the most suitable candidate.
>
> :-)
> X
>
>
> On Sat, Jul 27, 2013 at 11:41 AM, Pascal Thubert (pthubert) <
> pthubert@cisco.com> wrote:
>
>>  Dear all;****
>>
>> ** **
>>
>> I love the term “relocation”. ****
>>
>> We probably want a relocation that is transparent to the upper layers.***
>> *
>>
>> The topology can also be qualified as relatively stable.****
>>
>> ** **
>>
>> What do others think?****
>>
>> ** **
>>
>> Cheers,****
>>
>> ** **
>>
>> Pascal****
>>
>> ** **
>>
>> *From:* 6tsch-bounces@ietf.org [mailto:6tsch-bounces@ietf.org] *On
>> Behalf Of *Alfredo Grieco
>> *Sent:* samedi 27 juillet 2013 10:04
>> *To:* Thomas Watteyne
>> *Cc:* 6tsch@ietf.org
>> *Subject:* Re: [6tsch] Mobility in 6TSCH****
>>
>> ** **
>>
>> Almost static topologies ?****
>>
>> ** **
>>
>> Alfredo
>>
>> On Saturday, July 27, 2013, Thomas Watteyne wrote:****
>>
>> Pascal,****
>>
>> ** **
>>
>> I understand you are looking for the right term.****
>>
>> ** **
>>
>> Terms I can think of:****
>>
>> - roaming****
>>
>> - node relocation****
>>
>> - occasional mobility****
>>
>> - intermittent relocation****
>>
>> ** **
>>
>> Thomas****
>>
>> ** **
>>
>> On Fri, Jul 26, 2013 at 7:50 PM, Qin Wang <qinwang@berkeley.edu> wrote:**
>> **
>>
>> Hi Pascal and All,****
>>
>> ** **
>>
>> How about "dynamic adjustment". Because,****
>>
>> ** **
>>
>> In steady network (fixed location and predictable traffic load),  the
>> features of deterministic and low energy consumption have definitely been
>> provided. What we want to do is, with distributed reservation and RPL, the
>> deterministic and low energy consumption features can be extended to the
>> dynamic network (some degree of location change and/or some degree of
>> traffic load change).****
>>
>> ** **
>>
>> Thought?****
>>
>> ** **
>>
>> Qin****
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
>> On Sat, Jul 27, 2013 at 12:20 AM, Pascal Thubert (pthubert) <
>> pthubert@cisco.com> wrote:****
>>
>> Dear all;
>>
>> As you know, determinism and fast mobility are quite antagonistic in
>> nature.
>>
>> Even with distributed routing, there are a number of issues like timeslot
>> allocation and security context transfer or (re)establishment that will
>> delay the mobility.
>> In 6TSCH, we have use cases that we want to serve like the crane and the
>> mobile handset, which require a certain degree of mobility but probably not
>> make before break or sub-second reconnection. So we want to express that we
>> aim at supporting this limited mobility but we do not want to raise the
>> expectation higher than we can actually serve.
>>
>> The mobility term is so overloaded that it might be misleading. Would you
>> have a suggestion for term that would be more appropriate?
>>
>> (I heard the terms soft, limited, and constrained so far)
>>
>> Cheers,
>>
>> Pascal
>>
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>>
>> ** **
>>
>>
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