Hi, Stewart, What does "LI" stand for? ISL is not mature enough for real adoption. The academia research suggested to use laser instead of microwave. When laser is used for ISL, there should not have spectrum license issue, I don't see the ITU or USA has spectrum allocation for the frequency of laser (400THz~700THz).
Lin From: Stewart Bryant <[email protected]> Sent: Thursday, July 8, 2021 7:19 AM To: Hesham ElBakoury <[email protected]> Cc: Stewart Bryant <[email protected]>; Lin Han <[email protected]>; [email protected]; [email protected]; [email protected]; UTTARO, JAMES <[email protected]>; [email protected] Subject: Re: [Int-area] New Version Notification for draft-lhan-problems-requirements-satellite-net-00.txt The thing that worries me about iSL is whether the inability to do LI will prohibit licensing in some countries. - Stewart On 7 Jul 2021, at 03:51, Hesham ElBakoury <[email protected]<mailto:[email protected]>> 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 <[email protected]<mailto:[email protected]>> 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 <[email protected]<mailto:[email protected]>> Sent: Tuesday, July 6, 2021 7:20 AM To: Lin Han <[email protected]<mailto:[email protected]>>; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Cc: [email protected]<mailto:[email protected]> 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 <[email protected]<mailto:[email protected]>> On Behalf Of Lin Han Sent: Saturday, July 03, 2021 8:41 PM To: [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Cc: [email protected]<mailto:[email protected]> 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: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Saturday, July 3, 2021 5:07 PM To: Lin Han <[email protected]<mailto:[email protected]>>; Richard Li <[email protected]<mailto:[email protected]>> 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 URL: 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mp;reserved=0 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. 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