cISP: A Speed-of-Light Internet Service Provider
Talkat 19th USENIX Symposium on Networked Systems Design and Implementation (NSDI '22) · 2022-04-04..04-06·
summary
Design augments fiber with free-space microwave hops chosen from FCC and American Tower databases and terrain and canopy maps, solving an ILP to pick ~3,000 towers and reach an aggregate 100 Gbps target; simulated US and Europe instantiations achieve mean latencies within 5% of great-circle speed-of-light and amortized cost of $0.81 per GB over five years. Real-world validation uses the McKay Brothers HFT Chicago–New York path showing 1,100 km round-trip at 7.7 ms versus 7.6 ms physical lower bound, and web replay experiments show ~42% page-load reductions.
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chapters (14)
- 0:00Intro
- 0:22The Internet is slowe!
- 1:40Let's break down the 37x inflation
- 2:36Why is packet delivery slow?
- 3:14World's fastest wide-area networks
- 4:56Microwave Transmission
- 6:00Designing ISP
- 7:15CISP for the United States
- 9:14How does a real MW network perform
- 10:34Is clSP resilient to weather?
- 11:34Is MW resilient to weather in practice?
- 14:19Speedup for web browsing
- 15:30Cost and benefit per GB
- 16:33In the paper...
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