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It's too bad that the people who perennially propose adaptive mesh radios as some sort of decentralized alternative to public wired networks never consult anyon
by trotsky 15y ago
It's too bad that the people who perennially propose adaptive mesh radios as some sort of decentralized alternative to public wired networks never consult anyone that has actually worked with mesh on any scale. If they did they'd quickly look for some other solution. I thought Greenberg was a real journalist, what's happened to fact checking?
- jaggederest 15y ago"If it wasn't for those damned laws of physics always screwing up my plans..." basically. Mesh networks have a pretty hard constraint of k/n^2 bandwidth total where k is an average node's bandwidth and n is the number of nodes. You quickly get down into the 'bytes per second' range.
- saulrh 15y agoThis interests me, but I can't find a paper - stuff like "mesh network bandwidth" simply don't work on scholar. Any chance of a citation?
- Wohlf 15y agoI think this may be because no one has attempted it on a scale where it is essentially cripplingly slow.
- wmf 15y agoJinyang Li, Charles Blake, Douglas S. J. De Couto, Hu Imm Lee, and Robert Morris: Capacity of Ad Hoc Wireless Networks. Mobicom 2001. http://pdos.csail.mit.edu/papers/grid:mobicom01/ http://pdos.csail.mit.edu/papers/grid:mobicom01/ Summary: Throughput of a mesh asymptotically approaches 1/7th of the non-mesh link rate. This is using the 802.11 MAC, but recent softMAC chipsets could be run in a more mesh-optimized psuedo-802.11 protocol (that has not been invented yet AFIAK), so you might get performance as good as 1/4th.
- marshray 15y ago1/7 or 1/4 is a lot better than k/n^2.