Re: [manet] Routing in emerging LEO satellite networks

Lou Berger <lberger@labn.net> Wed, 08 November 2023 09:18 UTC

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Date: Wed, 08 Nov 2023 10:18:04 +0100
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To: Henning Rogge <hrogge@gmail.com>, "zeqilai@tsinghua.edu.cn" <zeqilai@tsinghua.edu.cn>
Cc: "manet@ietf.org" <manet@ietf.org>, zhangqi <zhangqi@zgclab.edu.cn>, wuqian <wuqian@cernet.edu.cn>, lihewu <lihewu@cernet.edu.cn>
References: <2023110808480885489319@tsinghua.edu.cn> <CAGnRvupYxt24qfLdxF7f=OT5YRbqwrdVCxXZ=EKLnJFqsyihuw@mail.gmail.com>
From: Lou Berger <lberger@labn.net>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/manet/ygBJlMyMvrgnnFHKk7z85bJw_eQ>
Subject: Re: [manet] Routing in emerging LEO satellite networks
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you might want to check out /datatracker.ietf.org/wg/tvr/

On 11/8/2023 8:59 AM, Henning Rogge wrote:
> On Wed, Nov 8, 2023 at 8:48 AM zeqilai@tsinghua.edu.cn
> <zeqilai@tsinghua.edu.cn> wrote:
>> Hi all MANET:
>>
>> Thanks for the nice talks in IETF 118. As a new attendee, I learnt a lot.
>>
>> I am currently an assistant professor at Tsinghua University, and our group are working on the internetworking technologies in the upcoming LEO satellite networks (LSN).
>>
>> One important direction of our research is exploring how to achieve scalable and robust routing in LSNs. And we have many recent efforts in this direction. Some have been published in the research conference of computer networks.
>>
>> Here are some of our recent research works:
>>
>> (1) Routing in LSN: https://ieeexplore.ieee.org/abstract/document/9651919
>> (2) Space-Groud topology design: https://ieeexplore.ieee.org/abstract/document/9796886
>> (3) Simulation platform for LSN (with open source implementation): https://www.usenix.org/conference/nsdi23/presentation/lai-zeqi
>>
>> We believe LSN has many similar features with conventional mobile ad-hoc networks, just like the high mobility, frequent handovers, unstable communication links, etc.
> I am not sure about the similarities to adhoc networks... all orbits
> of satellites in a LEO mega constellation are known, so each node can
> calculate in advance when a communication link becomes available and
> when it will fail.
>
> This means you can calculate a path towards the target without ever
> doing something like neighbor or path discovery, just by knowing the
> time and all relevant orbits. Or maybe I am missing something?
>
> Henning Rogge
>
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