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Date: Fri, 01 Sep 2006 20:18:38 +0900
From: Soohong Daniel Park <soohong.park@samsung.com>
To: 16ng@eeca16.sogang.ac.kr
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Subject: [16ng] 2nd Call for Comment on PMP definition in Section 2.2 of
	RFC2461
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[adding our AD into CC list]

Folks, 

This is a 2nd call for comment on the PMP link definition
in RFC 2461, Section 2.2 in accordance with 16 link to
guage 16ng folks thought.

Opinion 1: "point-to-point" described in Section 2.2
is enough for 16ng IPv6 solution space ?

"point-to-point - a link that connects exactly two interfaces.  
A point-to-point link is assumed to have multicast capability 
and have a link-local address."

Opinion 2: "point-to-multipoint must be newly illustrated
in Section 2.2 ? 

Which is your preference ?

Daniel (Soohong Daniel Park)
Mobile Convergence Laboratory, SAMSUNG Electronics.

----- Original Message ----- 
From: "Soohong Daniel Park" <soohong.park@samsung.com>
To: <16ng@eeca16.sogang.ac.kr>
Sent: Wednesday, August 16, 2006 3:33 PM
Subject: [16ng] PMP definition in Section 2.2 of RFC2461


> So far, no PMP link are defined in RFC 2461, Section 2.2.
> In case of IEEE 802.16, PMP is a mandatory topology.
> Obviously, 16ng solution is based on PMP link type.
> 
> Do we need a PMP definition in Section 2.2 of RFC2461 ?
> 
> For example;
> ================================================
> point-to-multipoint 
> - a link consists of a single interface communicating 
> directly with more than one interface.
> ================================================
> 
> I know the status of 2461bis is a AD Evaluation, so if 
> allowed, we should tackle the PMP link definition on the bis.
> 
> Comments ?
> 
> Daniel (Soohong Daniel Park)
> Mobile Convergence Laboratory, SAMSUNG Electronics.
> _______________________________________________
> 16ng mailing list
> 16ng@eeca16.sogang.ac.kr
> http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
> 
_______________________________________________
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Date: Fri, 01 Sep 2006 20:04:04 +0900
From: Soohong Daniel Park <soohong.park@samsung.com>
To: 16ng@eeca16.sogang.ac.kr
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Subject: [16ng] 2nd Call For Comment on PMP definition in Section 2.2 of
	RFC2461
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[adding our AD into CC list]

Folks, 

This is a 2nd call for comment on the PMP link definition
in RFC 2461, Section 2.2 in accordance with 16 link to
guage 16ng folks thought.

Opinion 1: "point-to-point" described in Section 2.2
is enough for 16ng IPv6 solution space ?

"point-to-point - a link that connects exactly two interfaces.  
A point-to-point link is assumed to have multicast capability 
and have a link-local address."

Opinion 2: "point-to-multipoint must be newly illustrated
in Section 2.2 ? 

Which is your preference ?

Daniel (Soohong Daniel Park)
Mobile Convergence Laboratory, SAMSUNG Electronics.

----- Original Message ----- 
From: "Soohong Daniel Park" <soohong.park@samsung.com>
To: <16ng@eeca16.sogang.ac.kr>
Sent: Wednesday, August 16, 2006 3:33 PM
Subject: [16ng] PMP definition in Section 2.2 of RFC2461


> So far, no PMP link are defined in RFC 2461, Section 2.2.
> In case of IEEE 802.16, PMP is a mandatory topology.
> Obviously, 16ng solution is based on PMP link type.
> 
> Do we need a PMP definition in Section 2.2 of RFC2461 ?
> 
> For example;
> ================================================
> point-to-multipoint 
> - a link consists of a single interface communicating 
> directly with more than one interface.
> ================================================
> 
> I know the status of 2461bis is a AD Evaluation, so if 
> allowed, we should tackle the PMP link definition on the bis.
> 
> Comments ?
> 
> Daniel (Soohong Daniel Park)
> Mobile Convergence Laboratory, SAMSUNG Electronics.
> _______________________________________________
> 16ng mailing list
> 16ng@eeca16.sogang.ac.kr
> http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
> 
>
_______________________________________________
16ng mailing list
16ng@eeca16.sogang.ac.kr
http://eeca16.sogang.ac.kr/mailman/listinfo/16ng



From 16ng-bounces@eeca16.sogang.ac.kr Fri Sep 01 11:31:05 2006
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To: Soohong Daniel Park <soohong.park@samsung.com>
Subject: Re: [16ng] 2nd Call For Comment on PMP definition in Section 2.2 of
	RFC2461 
In-reply-to: <01b601c6cdb6$56a98510$6dc6dba8@your655e9d6f61> 
References: <01fa01c6c0fd$d8868030$6dc6dba8@your655e9d6f61>
	<01b601c6cdb6$56a98510$6dc6dba8@your655e9d6f61>
Comments: In-reply-to Soohong Daniel Park <soohong.park@samsung.com>
   message dated "Fri, 01 Sep 2006 20:04:04 +0900."
Date: Fri, 01 Sep 2006 10:43:54 -0400
From: Thomas Narten <narten@us.ibm.com>
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In order to answer this question, I would like to ask "what problem
needs fixing"?

Adding a definition for PMP to the ND spec (and then having that spec
make absolutely no use of the definition) seems pretty useless and
would solve no problem I can think of.

Is that what you are asking about? Or is it something else?

If 16ng needs to define PMP, why can't it just do so itself in the
documents it uses?

Thomas
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From 16ng-bounces@eeca16.sogang.ac.kr Fri Sep 01 15:01:18 2006
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Date: Fri, 01 Sep 2006 14:00:31 -0500 (CDT)
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Subject: Re: [16ng] 2nd Call For Comment on PMP definition in Section 2.2 of
	RFC2461
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Hi Daniel/all,
[...]

>Folks, 
>
>This is a 2nd call for comment on the PMP link definition
>in RFC 2461, Section 2.2 in accordance with 16 link to
>guage 16ng folks thought.
>
>Opinion 1: "point-to-point" described in Section 2.2
>is enough for 16ng IPv6 solution space ?
>
>"point-to-point - a link that connects exactly two interfaces.  
>A point-to-point link is assumed to have multicast capability

My understanding is that this assumption is for bi-directional multicast capability (which IEEE 802.16e doesn't have).

>and have a link-local address."
>
>Opinion 2: "point-to-multipoint must be newly illustrated
>in Section 2.2 ? 
>
>Which is your preference ?

My preference is opinion 2.

>
>Daniel (Soohong Daniel Park)
>Mobile Convergence Laboratory, SAMSUNG Electronics.

Best Regards,

Tim
Rom 8:28

[...]
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From 16ng-bounces@eeca16.sogang.ac.kr Tue Sep 05 23:42:49 2006
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Here is our preliminary agenda for the 16ng interim next week.

========================================

IP over IEEE 802.16 Networks Working Group (16ng)

o 1st Interim - Mannheim, Gernamy
o September, 12nd - 13rd

AGENDA

o 12nd, Tuesday

1000 - 1030 Coffee break & socializing

1030 - 1230 Opening session

 - Welcome    chairs
 - Agenda bashing    chairs
 - WG status and milestone review    chairs
 - Informative reports
  + WiMAX IPv6 activity    TBD
  + WiBro IPv6 activity    TBD
  + IEEE 802.16 activity    TBD
  + others ?
 - IPv6 deployment scenario v6ops document review    Myungki Shin
 - IPv6 subnet model design team report    Syam Madanapalli 

1230 - 1330 Lunch 

1330 - 1530 Technical session I

 - IPv6 subnet model design team report    Syam Madanapalli

1530 - 1600 Coffee break

1600 - 1800 Technical session II
 
 - IPv6 solution discussion - I
  + IPv6 shared prefix model    Syam Madanapalli
  + IPv6 unique prefix model    TBD
  + IPv6 over Ethernet CS    Max Riegel

1900 - 2200 Social


o 13rd, Wednesday

0900 - 1200 Technical session III

 - IPv6 solution discussion - II

1200 - 1300 Lunch

1300 - 1430 Technical session IV

 - IPv6 solution discussion - III
 - Relevant discussion or presentation if any

1430 - 1500 Coffee break

1500 - 1600 Closing session

 - Wrap-up    chairs
  + Recommendation on subnet model for IPv6 CS    chairs
  + Next step    chairs

========================================

Daniel (Soohong Daniel Park)
Mobile Convergence Laboratory, SAMSUNG Electronics.
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From 16ng-bounces@eeca16.sogang.ac.kr Wed Sep 06 06:29:11 2006
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Date: Wed, 06 Sep 2006 13:28:19 +0300
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Subject: [16ng] 
 Re: 2nd Call for Comment on PMP definition in Section 2.2 of RFC2461
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The 16ng group is chartered to define how IP is run over 802.16 links.
This includes defining how ND works for such links. This work
includes not only picking the right link type but also substantial work
on protocol details.

We could add new link types under Section 2.2 in RFC2461bis,
but that by itself does not answer how ND is run on such
links. And we should not delay that document to add such
details. You, the 16ng WG, are chartered to do that work
in your documents.

I would recommend focusing on your "IP over 802.16"
documents. These documents should state what link
type expectation they have, what subnet model is employed,
and all the protocol details for ND and everything else that
is needed. Once your work is complete these documents
become the normative way to run IP and ND for 802.16.
If you needed to use a link type not listed in 2461bis
that's fine. But I want to see the whole solution in
your documents.

--Jari

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Date: Wed, 6 Sep 2006 19:19:02 +0530
From: "Syam Madanapalli" <smadanapalli@gmail.com>
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Subject: [16ng] Subnet Model Analysis for 16ng
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------=_Part_4373_29540993.1157550542960
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Hi,

We made some analysis of subnet models for IPv6,
please review and comment.
I have attached the text document with this mail as
the draft has not been published yet.

Thanks,
Syam

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From 16ng-bounces@eeca16.sogang.ac.kr Wed Sep 06 16:14:01 2006
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Subject: RE: [16ng] Subnet Model Analysis for 16ng
Date: Wed, 6 Sep 2006 16:12:30 -0400
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A few questions 

On ...
3.3.3.  Duplicate Address Detection

Does adding something like "such as BS performaing relay DAD-like
functions for MS under itself" make sense? Of course, it needs to be
worked out somewhere like the shared prefix model, but I recall that
some early systems do something similar and it has smaller scope, just
for a BS instead of an AR.

On..
3.3.4.2. On-link Multicast Support & 3.3.4.5.  Effect on Dormant Mode
I wonder if it makes sense to consider that BS can potentially block
broadcast/multicast with known purposes to MS that do not need it and
deliver only to intended MS MAC unicast over the air. 
An 802.16 BS is already involved in many activities that require
awareness of higher layer states beyond MAC (regrettably to some), so
knowing necessary information may not be a big additional burden. Also,
a BS needs and can act with only local information.
Also IGMP/MLD snooping can be used for additional cases, as some
ethernet switches already do. And finally, broadcast/multicast with
unknown functions will have to be left to a policy and maybe subject to
rate limits like many 802.11 implementations, where practical
experiences to come will help guide the usage.

I guess the common thing is that BS's are already very specialized nodes
for 802.16, so I'd be inclined to limit 802.16 specifics to BS and not
bother AR, even if there is some penalty in other aspects. (though I
have not seen something that'd concern me too much yet.) If all or most
of 802.16 specifics are handled at BS using only local knowledge, there
will be even less interop issues.

I apologize if I'm out of context, for I am not there at the meeting
following the discussions.

Bests.

"J" Kim
macsbug@research.att.com
AT&T Labs - Research

http://macsbug.googlepages.com/

-----Original Message-----
From: 16ng-bounces@eeca16.sogang.ac.kr
[mailto:16ng-bounces@eeca16.sogang.ac.kr] On Behalf Of Syam Madanapalli
Sent: Wednesday, September 06, 2006 9:49 AM
To: 16ng@eeca16.sogang.ac.kr
Subject: [16ng] Subnet Model Analysis for 16ng

Hi,

We made some analysis of subnet models for IPv6,
please review and comment.
I have attached the text document with this mail as
the draft has not been published yet.

Thanks,
Syam

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Date: Thu, 07 Sep 2006 10:02:13 +0900
From: Myung-Ki Shin <myungki.shin@gmail.com>
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Hi J,

Thanks for your comments.
Inline ...

macsbug@research.att.com wrote:

> A few questions 
> 
> On ...
> 3.3.3.  Duplicate Address Detection
> 
> Does adding something like "such as BS performaing relay DAD-like
> functions for MS under itself" make sense? Of course, it needs to be
> worked out somewhere like the shared prefix model, but I recall that
> some early systems do something similar and it has smaller scope, just
> for a BS instead of an AR.

I think there are several ways to implement the DAD optimization
(e.g., relay DAD, proxy DAD, or some vendor-specifc functions).  Also, 
BS, AR or both can perform that kind of fuctions for MS.

In my understanding, the goal of this draft is to provides analysis and
applicability of each subnet model.  So, the isssue above can be 
discussed in solution documents for IPv6 CS and Eth-CS, respectively.

> On..
> 3.3.4.2. On-link Multicast Support & 3.3.4.5.  Effect on Dormant Mode
> I wonder if it makes sense to consider that BS can potentially block
> broadcast/multicast with known purposes to MS that do not need it and
> deliver only to intended MS MAC unicast over the air. 
> An 802.16 BS is already involved in many activities that require
> awareness of higher layer states beyond MAC (regrettably to some), so
> knowing necessary information may not be a big additional burden. Also,
> a BS needs and can act with only local information.
> Also IGMP/MLD snooping can be used for additional cases, as some
> ethernet switches already do. And finally, broadcast/multicast with
> unknown functions will have to be left to a policy and maybe subject to
> rate limits like many 802.11 implementations, where practical
> experiences to come will help guide the usage.

I know and I agree that this issue is very important for dormant mobile 
node. There are strong and weak points with this approach above.
Also, sometimes it might be not specific to IPv6 solutions and
morevover this may be a kind of BS implementation issues.

> I guess the common thing is that BS's are already very specialized nodes
> for 802.16, so I'd be inclined to limit 802.16 specifics to BS and not
> bother AR, even if there is some penalty in other aspects. (though I
> have not seen something that'd concern me too much yet.) If all or most
> of 802.16 specifics are handled at BS using only local knowledge, there
> will be even less interop issues.

I wonder if we can define or discuss about BS and/or AR behaviors here,
that is, omniscient AR and dummy BS vs. omniscient(?) BS and general AR,
even if interop issues are important, of course.

Thanks,
Myung-Ki,
ETRI


> I apologize if I'm out of context, for I am not there at the meeting
> following the discussions.
> 
> Bests.
> 
> "J" Kim
> macsbug@research.att.com
> AT&T Labs - Research
> 
> http://macsbug.googlepages.com/
> 
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Subject: Re: [16ng] Subnet Model Analysis for 16ng
From: Pars Mutaf <pars.mutaf@int-evry.fr>
To: Syam Madanapalli <smadanapalli@gmail.com>
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Hi, 

Thanks to the contributors for this draft. 
I have a quick question. Have you decided
that in 16ng:

Subnet = paging area?


Thanks,
pars


On Wed, 2006-09-06 at 19:19 +0530, Syam Madanapalli wrote:
> Hi,
> 
> We made some analysis of subnet models for IPv6,
> please review and comment.
> I have attached the text document with this mail as
> the draft has not been published yet.
> 
> Thanks,
> Syam
> _______________________________________________
> 16ng mailing list
> 16ng@eeca16.sogang.ac.kr
> http://eeca16.sogang.ac.kr/mailman/listinfo/16ng

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Subject: RE: [16ng] Subnet Model Analysis for 16ng
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Your comments appreciated...

Although this thread is on the subnet model analysis, I guess I was
commenting a bit broadly.

Some comments..

"Also, BS, AR or both can perform that kind of functions for MS."
>> Of course, but I'd prefer BS than AR, since BS only needs to defend
MS under it which I believe is more realistic and of limited scope,
given the way 802.16 works, while AR indeed needs to know everyone. In a
similar spirit as "802.16 specifics is unavoidable at BS, so try not to
rope in AR as well".

"In my understanding, the goal of this draft is to provides analysis and
applicability of each subnet model. "
>> Agreed. However, any analysis is bound to imply some directions to
solutions. It'd be very useful to indicate the desirable properties of
potential solutions, whatever they may be.

"There are strong and weak points with this approach above"
>> I'd like to discuss that, online or offline if inappropriate for this
thread.

" this may be a kind of BS implementation issues"
>>  It may still be useful to put forth desirable properties, or
best/recommended practices in some other docs.


" omniscient AR and dummy BS vs. omniscient(?) BS and general AR"
>> I think omniscient BS needs to be only omniscient about its own MS's,
which is a relatively weak requirement, given how 802.16 works.
Nonetheless, a full description of such spectrum of approaches is
probably not needed in this doc, but may be something to keep in mind
during the design stage.
 

Byoung-Jo "J" Kim
macsbug@research.att.com
AT&T Labs - Research

http://macsbug.googlepages.com/

-----Original Message-----
From: Myung-Ki Shin [mailto:myungki.shin@gmail.com] 
Sent: Wednesday, September 06, 2006 9:02 PM
To: Kim,Byoung-Jo J (J)
Cc: 16ng@eeca16.sogang.ac.kr
Subject: Re: [16ng] Subnet Model Analysis for 16ng

Hi J,

Thanks for your comments.
Inline ...

macsbug@research.att.com wrote:

> A few questions 
> 
> On ...
> 3.3.3.  Duplicate Address Detection
> 
> Does adding something like "such as BS performaing relay DAD-like
> functions for MS under itself" make sense? Of course, it needs to be
> worked out somewhere like the shared prefix model, but I recall that
> some early systems do something similar and it has smaller scope, just
> for a BS instead of an AR.

I think there are several ways to implement the DAD optimization
(e.g., relay DAD, proxy DAD, or some vendor-specifc functions).  Also, 
BS, AR or both can perform that kind of fuctions for MS.

In my understanding, the goal of this draft is to provides analysis and
applicability of each subnet model.  So, the isssue above can be 
discussed in solution documents for IPv6 CS and Eth-CS, respectively.

> On..
> 3.3.4.2. On-link Multicast Support & 3.3.4.5.  Effect on Dormant Mode
> I wonder if it makes sense to consider that BS can potentially block
> broadcast/multicast with known purposes to MS that do not need it and
> deliver only to intended MS MAC unicast over the air. 
> An 802.16 BS is already involved in many activities that require
> awareness of higher layer states beyond MAC (regrettably to some), so
> knowing necessary information may not be a big additional burden.
Also,
> a BS needs and can act with only local information.
> Also IGMP/MLD snooping can be used for additional cases, as some
> ethernet switches already do. And finally, broadcast/multicast with
> unknown functions will have to be left to a policy and maybe subject
to
> rate limits like many 802.11 implementations, where practical
> experiences to come will help guide the usage.

I know and I agree that this issue is very important for dormant mobile 
node. There are strong and weak points with this approach above.
Also, sometimes it might be not specific to IPv6 solutions and
morevover this may be a kind of BS implementation issues.

> I guess the common thing is that BS's are already very specialized
nodes
> for 802.16, so I'd be inclined to limit 802.16 specifics to BS and not
> bother AR, even if there is some penalty in other aspects. (though I
> have not seen something that'd concern me too much yet.) If all or
most
> of 802.16 specifics are handled at BS using only local knowledge,
there
> will be even less interop issues.

I wonder if we can define or discuss about BS and/or AR behaviors here,
that is, omniscient AR and dummy BS vs. omniscient(?) BS and general AR,
even if interop issues are important, of course.

Thanks,
Myung-Ki,
ETRI


> I apologize if I'm out of context, for I am not there at the meeting
> following the discussions.
> 
> Bests.
> 
> "J" Kim
> macsbug@research.att.com
> AT&T Labs - Research
> 
> http://macsbug.googlepages.com/
> 

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Hi Pars,

On 9/7/06, Pars Mutaf <pars.mutaf@int-evry.fr> wrote:
> Hi,
>
> Thanks to the contributors for this draft.
> I have a quick question. Have you decided
> that in 16ng:
>
> Subnet = paging area?

No.

And do you see any reason to tie these two things together?
If point-to-point subnet model is considered, there will be
essentially only one node in the paging area if subnet = paging area,
which I think is not effective way of doing the paging.

Thanks,
Syam


>
>
> Thanks,
> pars
>
>
> On Wed, 2006-09-06 at 19:19 +0530, Syam Madanapalli wrote:
> > Hi,
> >
> > We made some analysis of subnet models for IPv6,
> > please review and comment.
> > I have attached the text document with this mail as
> > the draft has not been published yet.
> >
> > Thanks,
> > Syam
> > _______________________________________________
> > 16ng mailing list
> > 16ng@eeca16.sogang.ac.kr
> > http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
>
>
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Subject: Re: [16ng] Subnet Model Analysis for 16ng
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On Thu, 2006-09-07 at 20:31 +0530, Syam Madanapalli wrote:
> Hi Pars,
> 
> On 9/7/06, Pars Mutaf <pars.mutaf@int-evry.fr> wrote:
> > Hi,
> >
> > Thanks to the contributors for this draft.
> > I have a quick question. Have you decided
> > that in 16ng:
> >
> > Subnet = paging area?
> 
> No.
> 
> And do you see any reason to tie these two things together?

Hi Syam,
No particular reason. 

(Subnet=PA is the simplest approach. But I agree that this 
may be too restrictive.)

> If point-to-point subnet model is considered, there will be
> essentially only one node in the paging area if subnet = paging area,
> which I think is not effective way of doing the paging.

:-)


Thanks again for the draft

pars

> 
> Thanks,
> Syam
> 
> 
> >
> >
> > Thanks,
> > pars
> >
> >
> > On Wed, 2006-09-06 at 19:19 +0530, Syam Madanapalli wrote:
> > > Hi,
> > >
> > > We made some analysis of subnet models for IPv6,
> > > please review and comment.
> > > I have attached the text document with this mail as
> > > the draft has not been published yet.
> > >
> > > Thanks,
> > > Syam
> > > _______________________________________________
> > > 16ng mailing list
> > > 16ng@eeca16.sogang.ac.kr
> > > http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
> >
> >

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Hi, 

On Thu, 2006-09-07 at 08:52 -0700, Behcet Sarikaya wrote:

> ==> I think that PA should be the coverage area under an AR (or
> ASN-GW) which might
> ==>include many BSs (this is from IP Paging point of definition). 
> ==>In the shared prefix model, this translates to subnet=PA, but in
> the per-MS prefix model
> ==>it does not, PA=all BS's under AR is probably better definition.


OK. Paging is the responsibility of AR, in this case. Right?

I'd like to ask another question if 
possible: 

     Neighbor discovery = paging?

That's my impression. But I'm not sure.

If so, does the AR know the current BS of the dormant host?

Thanks! 
pars

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From: Behcet Sarikaya <behcetsarikaya@yahoo.com>
Subject: Re: [16ng] Subnet Model Analysis for 16ng
To: pars.mutaf@int-evry.fr, Syam Madanapalli <smadanapalli@gmail.com>
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----- Original Message ----
From: Pars Mutaf <pars.mutaf@int-evry.fr>
To: Syam Madanapalli <smadanapalli@gmail.com>
Cc: 16ng@eeca16.sogang.ac.kr
Sent: Thursday, September 7, 2006 10:18:53 AM
Subject: Re: [16ng] Subnet Model Analysis for 16ng


On Thu, 2006-09-07 at 20:31 +0530, Syam Madanapalli wrote:
> Hi Pars,
> 
> On 9/7/06, Pars Mutaf <pars.mutaf@int-evry.fr> wrote:
> > Hi,
> >
> > Thanks to the contributors for this draft.
> > I have a quick question. Have you decided
> > that in 16ng:
> >
> > Subnet = paging area?
> 
> No.
> 
> And do you see any reason to tie these two things together?

Hi Syam,
No particular reason. 

(Subnet=PA is the simplest approach. But I agree that this 
may be too restrictive.)

> If point-to-point subnet model is considered, there will be
> essentially only one node in the paging area if subnet = paging area,
> which I think is not effective way of doing the paging.

:-)

==> I think that PA should be the coverage area under an AR (or ASN-GW) which might
==>include many BSs (this is from IP Paging point of definition). 
==>In the shared prefix model, this translates to subnet=PA, but in the per-MS prefix model
==>it does not, PA=all BS's under AR is probably better definition.
Thanks again for the draft

pars

> 
> Thanks,
> Syam
> 
> 
> >
> >
> > Thanks,
> > pars
> >
> >
> > On Wed, 2006-09-06 at 19:19 +0530, Syam Madanapalli wrote:
> > > Hi,
> > >
> > > We made some analysis of subnet models for IPv6,
> > > please review and comment.
> > > I have attached the text document with this mail as
> > > the draft has not been published yet.
> > >
> > > Thanks,
> > > Syam
> > > _______________________________________________
> > > 16ng mailing list
> > > 16ng@eeca16.sogang.ac.kr
> > > http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
> >
> >
==> I checked in WiMAX documents, they use paging group which corresponds to paging area
==>In 802.16e it says that a BS may be a member of one or more paging groups 
==>My 0.5 cents.
 
--behcet
--0-1118878517-1157644358=:56893
Content-Type: text/html; charset=us-ascii

<html><head><style type="text/css"><!-- DIV {margin:0px} --></style></head><body><div style="font-family:courier, monaco, monospace, sans-serif;font-size:12pt"><DIV style="FONT-SIZE: 12pt; FONT-FAMILY: courier, monaco, monospace, sans-serif"><BR><BR>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">----- Original Message ----<BR>From: Pars Mutaf &lt;pars.mutaf@int-evry.fr&gt;<BR>To: Syam Madanapalli &lt;smadanapalli@gmail.com&gt;<BR>Cc: 16ng@eeca16.sogang.ac.kr<BR>Sent: Thursday, September 7, 2006 10:18:53 AM<BR>Subject: Re: [16ng] Subnet Model Analysis for 16ng<BR><BR>
<DIV>On Thu, 2006-09-07 at 20:31 +0530, Syam Madanapalli wrote:<BR>&gt; Hi Pars,<BR>&gt; <BR>&gt; On 9/7/06, Pars Mutaf &lt;pars.mutaf@int-evry.fr&gt; wrote:<BR>&gt; &gt; Hi,<BR>&gt; &gt;<BR>&gt; &gt; Thanks to the contributors for this draft.<BR>&gt; &gt; I have a quick question. Have you decided<BR>&gt; &gt; that in 16ng:<BR>&gt; &gt;<BR>&gt; &gt; Subnet = paging area?<BR>&gt; <BR>&gt; No.<BR>&gt; <BR>&gt; And do you see any reason to tie these two things together?<BR><BR>Hi Syam,<BR>No particular reason. <BR><BR>(Subnet=PA is the simplest approach. But I agree that this <BR>may be too restrictive.)<BR><BR>&gt; If point-to-point subnet model is considered, there will be<BR>&gt; essentially only one node in the paging area if subnet = paging area,<BR>&gt; which I think is not effective way of doing the paging.<BR><BR>:-)<BR><BR>==&gt; I think that PA should be the coverage area under an AR (or ASN-GW) which might</DIV>
<DIV>==&gt;include many BSs (this is from IP Paging point of definition). </DIV>
<DIV>==&gt;In the shared prefix model, this translates to subnet=PA, but in the per-MS prefix model</DIV>
<DIV>==&gt;it does not, PA=all BS's under AR is probably better definition.<BR>Thanks again for the draft<BR><BR>pars<BR><BR>&gt; <BR>&gt; Thanks,<BR>&gt; Syam<BR>&gt; <BR>&gt; <BR>&gt; &gt;<BR>&gt; &gt;<BR>&gt; &gt; Thanks,<BR>&gt; &gt; pars<BR>&gt; &gt;<BR>&gt; &gt;<BR>&gt; &gt; On Wed, 2006-09-06 at 19:19 +0530, Syam Madanapalli wrote:<BR>&gt; &gt; &gt; Hi,<BR>&gt; &gt; &gt;<BR>&gt; &gt; &gt; We made some analysis of subnet models for IPv6,<BR>&gt; &gt; &gt; please review and comment.<BR>&gt; &gt; &gt; I have attached the text document with this mail as<BR>&gt; &gt; &gt; the draft has not been published yet.<BR>&gt; &gt; &gt;<BR>&gt; &gt; &gt; Thanks,<BR>&gt; &gt; &gt; Syam<BR>&gt; &gt; &gt; _______________________________________________<BR>&gt; &gt; &gt; 16ng mailing list<BR>&gt; &gt; &gt; 16ng@eeca16.sogang.ac.kr<BR>&gt; &gt; &gt; <A href="http://eeca16.sogang.ac.kr/mailman/listinfo/16ng" target=_blank>http://eeca16.sogang.ac.kr/mailman/listinfo/16ng</A><BR>&gt;
 &gt;<BR>&gt; &gt;<BR>==&gt; I checked in WiMAX documents, they use paging group which&nbsp;corresponds to&nbsp;paging area</DIV>
<DIV>==&gt;In 802.16e it says that a BS may be a member of one or more paging groups <IMG src="http://us.i1.yimg.com/us.yimg.com/i/mesg/tsmileys2/01.gif"><BR>==&gt;My 0.5 cents.</DIV>
<DIV>&nbsp;</DIV>
<DIV>--behcet</DIV></DIV></DIV></div></body></html>
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   message dated "Wed, 06 Sep 2006 19:19:02 +0530."
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One question I have wrt this document. It is asserted (without
justification) that "DAD is too expensive" and special extensions will
be needed. Where is this justified and where is the exact problem with
DAD explained?

I assume the issue is that multicast is expensive or doesn't work. But
then, ND in general is a problem also.  But I don't see ND being
listed as problematic, even though it is based on multicast.

What am I missing?

Thomas
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Hello Thomas,

On 9/7/06, Thomas Narten <narten@us.ibm.com> wrote:
> One question I have wrt this document. It is asserted (without
> justification) that "DAD is too expensive" and special extensions will
> be needed. Where is this justified and where is the exact problem with
> DAD explained?

The next version of the document either contain the text or a reference
for this.

>
> I assume the issue is that multicast is expensive or doesn't work. But
> then, ND in general is a problem also.  But I don't see ND being
> listed as problematic, even though it is based on multicast.

802.16 MAC transport connection exists between MS and AR. (This
is based on current WiMAX Network model). And there will be no such
transport connection to any other MS. So it is possible to restrict ND
between MS and AR, which does not require the multicast support.
When prefix is being shared with multiple MSs, the DAD somehow
should reach all the MS for which multicast support is required.

Thanks,
Syam

>
> What am I missing?
>
> Thomas
>
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Date: Fri, 8 Sep 2006 13:38:45 +0900
From: "JinHyeock Choi" <jinchoe@gmail.com>
To: "Thomas Narten" <narten@us.ibm.com>
Subject: Re: [16ng] Subnet Model Analysis for 16ng
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Dear Thomas

> I assume the issue is that multicast is expensive or doesn't work.

yes.

> But
> then, ND in general is a problem also.  But I don't see ND being
> listed as problematic, even though it is based on multicast.

In shared prefix model, we managed to run ND without multicast by
imposing a few restrictions to simplify network. There is only one
access router and an MN's (known) on-link neighbor is only its AR. All
ND procedures (such as address resolution) can be performed between an
MS and its AR without concerning other nodes except DAD.

Thanks for your kind consideration.

Best Regards

JinHyeock
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Subject: Re: [16ng] Subnet Model Analysis for 16ng
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Hi Syam,

Thanks for writing this draft. I had a few comments and non-rhetorical questions, and do apologize if any of these things have already been answered/explained...

In section 3.2, you correctly point out that IEEE 802.16 has defined no PPP CS. However (parentheses mine) in the sentence immediately preceding that one:

"One way to accomplish this (p2p connection between BS and AR at PHY/MAC layers) is to run PPP on the link [7]."

Until/unless IEEE 802.16 does define a PPP CS, I believe the above sentence should be removed (as well as those sentences in 3.2.1. that refer to PPP.

In section 3.2.2., how is it that the "AR's link local address is taken into consideration when forming a link local address on the mobile node"? DAD traditionally relies upon a NS sent to the solicited node multicast address for the tentative address... How is this done given 802.16 doesn't have an uplink multicast facility?

In section 3.2.4.9. I think a reference to RFC 3756 would be in order.

It also seems that if IEEE 802.16 nodes form their modified EUI-64 IIDs based upon their 48-bit IEEE MAC addresses, the only way there could be an address collision would be if both the MN and the AR somehow had the same MAC address...

Best Regards,

Tim
Rom 8:28



>From: Syam Madanapalli <smadanapalli@gmail.com>
>Date: 2006/09/06 Wed AM 08:49:02 CDT
>To: 16ng@eeca16.sogang.ac.kr
>Subject: [16ng] Subnet Model Analysis for 16ng

>Hi,
>
>We made some analysis of subnet models for IPv6,
>please review and comment.
>I have attached the text document with this mail as
>the draft has not been published yet.
>
>Thanks,
>Syam
>
>
>_______________________________________________
>16ng mailing list
>16ng@eeca16.sogang.ac.kr
>http://eeca16.sogang.ac.kr/mailman/listinfo/16ng

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Hi Heejin,


> 1.
> In case of shared & ethernet-like model, the periodical RAs may
> make all of the dormant nodes awake at the same time, which
> will cause 802.16e signaling messges for paging and power consumption of all
> nodes
> just for getting RAs.
> So, how about inserting to 3.1.4.7& 3.3.4.7 (changes on router
> implementation)
> so that RA's lifetime could be set to infinite value, or, 0xffff?

The current maximum possible interval for periodic RAs is 30 minutes.
The infinite value has not been defined for the router lifetime. You may
be interested to look at the following draft
http://www.ietf.org/internet-drafts/draft-madanapalli-ipv6-periodic-rtr-advts-00.txt
And there is a good discussion going on in IPv6 WG mailing list, no
conclusion has been made yet.

> 2.
> in 3.2.4.5
> "The AR can simply send link local multicast, for example unsolicited
>    Router Advertisements, and the BS can filter them out"
> => If AR sends RAs to announce some parameters such as the advertised
> prefix,
>      it should not be filtered by BS. How BS can differentiate this case?

Yes, I think it should be corrected.

>
>    So, I prefer that AR advertises RAs only when necessary without
> periodical RAs, and BS allows RAs.

The current IPv6 spec requires periodic RAs. Also removing periodic
RAs altogether may have adverse effect if the link contains many hosts.
May be we should look for increasing the interval.

> 3.
>
> in 3.1.4.4.
>
>    "All MSs send the packets to the AR irrespective of the destination and
> scope of the IPv6 address."
>
> =>  There could be a loopback message or decapsulation within MN such as
> MIPv6.
>
> "MSs send all the packets which are not destined to itself to the AR
> irrespective of the destination
>
>    and scope of the IPv6 address." may be better.

Yep, thanks.

Syam


>
>
>
> Some comments could be considered when solution document is made.
>
> Thanks.
>
>
>
> -- Regards,
>
>
> Heejin Jang
>
>
>
>
>
>
>
>
>
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Final agenda for the interim...


o 1st Interim - Mannheim, Gernamy
o September, 12nd - 13rd

========================================

AGENDA

o 12nd, Thesday

1000 - 1030 Coffee break & socializing

1030 - 1230 Opening session

- Welcome      chairs
- Agenda bashing     chairs
- WG status and milestone review   chairs
- Informative reports
 + WiMAX IPv6 activity    Jinhyeock Choi
 + 802.16 related activities (if any)  TBD
- IPv6 deployment scenario v6ops document review Myungki Shin
- IPv6 subnet model design team report  Syam Madanapalli 

1230 - 1330 Lunch

1330 - 1530 Technical session I

- IPv6 subnet model design team report  Syam Madanapalli

1530 - 1600 Coffee break

1600 - 1800 Technical session II
 
 - IPv6 solution discussion - I
 + IPv6 shared prefix model over IPv6CS  Syam Madanapalli
 + IPv6 unique prefix model over IPv6CS  TBD
 + IPv6 over EthernetCS    TBD

1900 - 2200 Social


o 13rd, Wednesday

0900 - 1200 Technical session III

- IPv6 solution discussion - II

1200 - 1300 Lunch

1300 - 1430 Technical session IV

- IPv6 solution discussion - III
- Relevant discussion or presentation if any
 + IPv4 over EthernetCS    Max Riegel

1430 - 1500 Coffee break

1500 - 1600 Closing session

- Wrap-up      chairs
 + Recommendation on subnet model for IPv6 CS chairs
 + Next step     chairs
 
========================================



Daniel (Soohong Daniel Park)
Mobile Convergence Laboratory, SAMSUNG Electronics.
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Subject: Re: [16ng] Subnet Model Analysis for 16ng 
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   message dated "Fri, 08 Sep 2006 13:38:45 +0900."
Date: Fri, 08 Sep 2006 08:35:43 -0400
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> In shared prefix model, we managed to run ND without multicast by
> imposing a few restrictions to simplify network. There is only one
> access router and an MN's (known) on-link neighbor is only its AR. All
> ND procedures (such as address resolution) can be performed between an
> MS and its AR without concerning other nodes except DAD.

I think it would be helpful to have subsections in the document that
explain how ND works (or is assumed to work, once (current unstated!)
assumptions are made) in each case.

Thomas
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Link to the draft:
http://www.ietf.org/internet-drafts/draft-madanapalli-16ng-subnet-model-analysis-00.txt
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Date: Sat, 09 Sep 2006 12:03:03 +0800
From: qinxia <alice.Q@huawei.com>
Subject: RE: [16ng] Subnet Model Analysis for 16ng
In-reply-to: <1157644855.16426.9.camel@lor-maknavic3.int-evry.fr>
To: pars.mutaf@int-evry.fr, "'Behcet Sarikaya'" <sarikaya@ieee.org>
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 Hello all,

           IMHO, The overlap between Paging area and the coverage area under
a AR does not mean 

" Neighbor discovery = paging?" 

A relay Paging controller function may be provided by an AR(ASN-GW), so, I
think, the AR may know the dormant hosts.

If I miss something or misunderstanding something, let me know,  Thanks.

BR
Alice 

> -----Original Message-----
> From: 16ng-bounces@eeca16.sogang.ac.kr 
> [mailto:16ng-bounces@eeca16.sogang.ac.kr] On Behalf Of Pars Mutaf
> Sent: Friday, September 08, 2006 12:01 AM
> To: Behcet Sarikaya
> Cc: 16ng@eeca16.sogang.ac.kr
> Subject: Re: [16ng] Subnet Model Analysis for 16ng
> 
> Hi, 
> 
> On Thu, 2006-09-07 at 08:52 -0700, Behcet Sarikaya wrote:
> 
> > ==> I think that PA should be the coverage area under an AR (or
> > ASN-GW) which might
> > ==>include many BSs (this is from IP Paging point of definition). 
> > ==>In the shared prefix model, this translates to subnet=PA, but in 
> > the per-MS prefix model ==>it does not, PA=all BS's under AR is 
> > probably better definition.
> 
> 
> OK. Paging is the responsibility of AR, in this case. Right?
> 
> I'd like to ask another question if
> possible: 
> 
>      Neighbor discovery = paging?
> 
> That's my impression. But I'm not sure.
> 
> If so, does the AR know the current BS of the dormant host?
> 
> Thanks! 
> pars
> 
> _______________________________________________
> 16ng mailing list
> 16ng@eeca16.sogang.ac.kr
> http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
> 


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Subject: [16ng] new I-D: "draft-jeon-ipv6-over-ieee802.16-ethcs-00.txt"
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From 16ng-bounces@eeca16.sogang.ac.kr Mon Sep 11 14:01:41 2006
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From: Pars MUTAF <Pars.Mutaf@int-evry.fr>
To: qinxia <alice.Q@huawei.com>
Subject: RE: [16ng] Subnet Model Analysis for 16ng
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Hi Alice,

Personally, I don't know currently what kind of
paging service will be provided in 16ng.

But, a priori, I would vote for ND-based paging.

It can be reused for future wireless access protocol
perhaps.

Regards,
pars


Selon qinxia <alice.Q@huawei.com>:

>  Hello all,
>
>            IMHO, The overlap between Paging area and the coverage area under
> a AR does not mean
>
> " Neighbor discovery = paging?"
>
> A relay Paging controller function may be provided by an AR(ASN-GW), so, I
> think, the AR may know the dormant hosts.
>
> If I miss something or misunderstanding something, let me know,  Thanks.
>
> BR
> Alice
>
> > -----Original Message-----
> > From: 16ng-bounces@eeca16.sogang.ac.kr
> > [mailto:16ng-bounces@eeca16.sogang.ac.kr] On Behalf Of Pars Mutaf
> > Sent: Friday, September 08, 2006 12:01 AM
> > To: Behcet Sarikaya
> > Cc: 16ng@eeca16.sogang.ac.kr
> > Subject: Re: [16ng] Subnet Model Analysis for 16ng
> >
> > Hi,
> >
> > On Thu, 2006-09-07 at 08:52 -0700, Behcet Sarikaya wrote:
> >
> > > ==> I think that PA should be the coverage area under an AR (or
> > > ASN-GW) which might
> > > ==>include many BSs (this is from IP Paging point of definition).
> > > ==>In the shared prefix model, this translates to subnet=PA, but in
> > > the per-MS prefix model ==>it does not, PA=all BS's under AR is
> > > probably better definition.
> >
> >
> > OK. Paging is the responsibility of AR, in this case. Right?
> >
> > I'd like to ask another question if
> > possible:
> >
> >      Neighbor discovery = paging?
> >
> > That's my impression. But I'm not sure.
> >
> > If so, does the AR know the current BS of the dormant host?
> >
> > Thanks!
> > pars
> >
> > _______________________________________________
> > 16ng mailing list
> > 16ng@eeca16.sogang.ac.kr
> > http://eeca16.sogang.ac.kr/mailman/listinfo/16ng
> >
>
>
>




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Date: Tue, 12 Sep 2006 09:12:17 +0800
From: qinxia <alice.Q@huawei.com>
Subject: RE: [16ng] Subnet Model Analysis for 16ng
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Hello Pars,
    
           Could you kindly introduce "ND-based paging"  in WiMAX? Or could
ND-based paging  be used in WLAN and so on, as you say, it looks like a
general paging appoach?
 
        Thanks

 BR

Alice
 
 

> -----Original Message-----
> From: 16ng-bounces@eeca16.sogang.ac.kr 
> [mailto:16ng-bounces@eeca16.sogang.ac.kr] On Behalf Of Pars MUTAF
> Sent: Tuesday, September 12, 2006 2:01 AM
> To: qinxia
> Cc: 16ng@eeca16.sogang.ac.kr
> Subject: RE: [16ng] Subnet Model Analysis for 16ng
> 
> 	<mailto:16ng-request@eeca16.sogang.ac.kr?subject=subscribe>
> List-Unsubscribe: <http://eeca16.sogang.ac.kr/mailman/listinfo/16ng>,
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> List-Id: IP over IEEE 802.16 Networks <16ng.eeca16.sogang.ac.kr>
> 
> 
> Hi Alice,
> 
> Personally, I don't know currently what kind of paging 
> service will be provided in 16ng.
> 
> But, a priori, I would vote for ND-based paging.
> 
> It can be reused for future wireless access protocol perhaps.
> 
> Regards,
> pars
> 
> 
> Selon qinxia <alice.Q@huawei.com>:
> 
> >  Hello all,
> >
> >            IMHO, The overlap between Paging area and the 
> coverage area 
> > under a AR does not mean
> >
> > " Neighbor discovery = paging?"
> >
> > A relay Paging controller function may be provided by an 
> AR(ASN-GW), 
> > so, I think, the AR may know the dormant hosts.
> >
> > If I miss something or misunderstanding something, let me 
> know,  Thanks.
> >
> > BR
> > Alice
> >
> > > -----Original Message-----
> > > From: 16ng-bounces@eeca16.sogang.ac.kr 
> > > [mailto:16ng-bounces@eeca16.sogang.ac.kr] On Behalf Of Pars Mutaf
> > > Sent: Friday, September 08, 2006 12:01 AM
> > > To: Behcet Sarikaya
> > > Cc: 16ng@eeca16.sogang.ac.kr
> > > Subject: Re: [16ng] Subnet Model Analysis for 16ng
> > >
> > > Hi,
> > >
> > > On Thu, 2006-09-07 at 08:52 -0700, Behcet Sarikaya wrote:
> > >
> > > > ==> I think that PA should be the coverage area under an AR (or
> > > > ASN-GW) which might
> > > > ==>include many BSs (this is from IP Paging point of 
> definition).
> > > > ==>In the shared prefix model, this translates to 
> subnet=PA, but 
> > > > in the per-MS prefix model ==>it does not, PA=all BS's 
> under AR is 
> > > > probably better definition.
> > >
> > >
> > > OK. Paging is the responsibility of AR, in this case. Right?
> > >
> > > I'd like to ask another question if
> > > possible:
> > >
> > >      Neighbor discovery = paging?
> > >
> > > That's my impression. But I'm not sure.
> > >
> > > If so, does the AR know the current BS of the dormant host?
> > >
> > > Thanks!
> > > pars
> > >
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> > >
> >
> >
> >
> 
> 
> 
> 
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