Re: [Idr] [Int-area] New Version Notification for draft-lhan-problems-requirements-satellite-net-00.txt

Stewart Bryant <stewart.bryant@gmail.com> Fri, 09 July 2021 06:02 UTC

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From: Stewart Bryant <stewart.bryant@gmail.com>
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Cc: Lin Han <lin.han@futurewei.com>, int-area@ietf.org, SARAH@jiscmail.ac.uk, rtgwg@ietf.org, "UTTARO, JAMES" <ju1738@att.com>, idr@ietf.org
Date: Fri, 9 Jul 2021 07:01:53 +0100
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To: Hesham ElBakoury <helbakoury@gmail.com>
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Subject: Re: [Idr] [Int-area] New Version Notification for draft-lhan-problems-requirements-satellite-net-00.txt
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Yes, that was interesting work.

However, I spoke to one of the ITU Raporteurs about this, and was warned that relaying through ground stations would likely be subject to geo-political restriction in the same way that telephone call routing is (county C will block calls between anyone and country E embargoed by country C - examples were given but I will not repeat them).

Countries hosting a relay, or indeed universal relays as modelled by Mark need to license the relay as it is a radio system. The licensing of radio traffic is subject to significant scrutiny in many developing countries, as indeed it was in most of the world until the late 60s.

So whilst ground station relays are a neat idea, we should not think of them as being opaque in the way that fibre is, at least not yet.

Stewart

Sent from my iPad

> On 7 Jul 2021, at 03:51, Hesham ElBakoury <helbakoury@gmail.com> wrote:
> 
> Mark Handley published the paper "Using ground relays for low-latency wide-area routing in megaconstellations" to show that even if we do not have ISL we can use ground terminals to route traffic with better latency than fiber links.
> 
> Thanks
> Hesham
> 
> 
> On Tue, Jul 6, 2021, 10:08 AM Lin Han <lin.han@futurewei.com> wrote:
>> Hi, Jim
>> 
>> I don't have clear answer.
>> What I can guess now is that most of current technologies (with enhancement) can be used, but some new technologies might be needed to solve the satellite specific issues, such as fast mobility, frequent topology changes, constraints in satellite power, security in open space, etc.
>> It is up to the community to decide what new technologies and what new protocols will be developed.
>> 
>> Regards
>> 
>> Lin
>> 
>> 
>> -----Original Message-----
>> From: UTTARO, JAMES <ju1738@att.com> 
>> Sent: Tuesday, July 6, 2021 7:20 AM
>> To: Lin Han <lin.han@futurewei.com>om>; Int-area@ietf.org; idr@ietf.org; rtgwg@ietf.org
>> Cc: SARAH@JISCMAIL.AC.UK
>> Subject: RE: New Version Notification for draft-lhan-problems-requirements-satellite-net-00.txt
>> 
>> Lin,
>> 
>>         Are you suggesting that the current set of protocols can be used with or without enhancements or is the uniqueness of the satellite network require new protocol(s) to address the architecture you have laid out.. 
>> 
>> Thanks,
>>         Jim Uttaro
>> 
>> -----Original Message-----
>> From: Idr <idr-bounces@ietf.org> On Behalf Of Lin Han
>> Sent: Saturday, July 03, 2021 8:41 PM
>> To: Int-area@ietf.org; idr@ietf.org; rtgwg@ietf.org
>> Cc: SARAH@JISCMAIL.AC.UK
>> Subject: [Idr] FW: New Version Notification for draft-lhan-problems-requirements-satellite-net-00.txt
>> 
>> Hi, 
>> 
>> This draft analyzed the problems and requirements for the satellite network when it is integrated with Internet by current routing technologies. 
>> It may be relevant and interesting to internet, BGP, IGP. The further solution proposals may also come from different groups including research initiative SARAH.
>> 
>> Look forwarding to discussion and comments.
>> 
>> Thanks
>> 
>> Lin
>> 
>> -----Original Message-----
>> From: internet-drafts@ietf.org <internet-drafts@ietf.org> 
>> Sent: Saturday, July 3, 2021 5:07 PM
>> To: Lin Han <lin.han@futurewei.com>om>; Richard Li <richard.li@futurewei.com>
>> Subject: New Version Notification for draft-lhan-problems-requirements-satellite-net-00.txt
>> 
>> 
>> A new version of I-D, draft-lhan-problems-requirements-satellite-net-00.txt
>> has been successfully submitted by Lin Han and posted to the IETF repository.
>> 
>> Name:           draft-lhan-problems-requirements-satellite-net
>> Revision:       00
>> Title:          Problems and Requirements of Satellite Constellation for Internet
>> Document date:  2021-07-03
>> Group:          Individual Submission
>> Pages:          32
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>> 
>> Abstract:
>>    This document presents the detailed analysis about the problems and
>>    requirements of satellite constellation used for Internet.  It starts
>>    from the satellite orbit basics, coverage calculation, then it
>>    estimates the time constraints for the communications between
>>    satellite and ground-station, also between satellites.  How to use
>>    satellite constellation for Internet is discussed in details
>>    including the satellite relay and satellite networking.  The problems
>>    and requirements of using traditional network technology for
>>    satellite network integrating with Internet are finally outlined.
>> 
>> 
>> 
>> 
>> The IETF Secretariat
>> 
>> 
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