Tarana Wireless: connecting the last-mile with non-line-of-sight wireless

http://www.taranawireless.com

by lisper • 12 years ago

34 12 12 years ago

jewel• 12 years ago

Rocket science inside.

This is comical marketing hyperbole. Rockets almost always have line-of-sight, unless there's an entire planet or moon in its way. They also deal with distances astronomically larger than a mile.

That being said, I think wireless mesh networks are going to be the best way to break the cable/DSL duopoly in US suburbs. A properly tuned mesh network increases its bandwidth as nodes are added. Its setup instructions can literally be "plug this into the wall on the top floor of your house, then connect to its wifi network".

Latency might be a problem, but based on previous experience, I imagine that modern devices are down to less than a millisecond of latency per hop.

mmastrac• 12 years ago

I'm not sure if you missed it or if I missed your point, but "rocket science" generally means "science incomprehensible to the public", which the underlying tech here likely is. It's not hyperbole as much as run-of-the-mill marketing to the masses.

Aloha• 12 years ago

I dont think the added latency from mesh is a big of an issue as it would look, I mean look at the 300ms of latency typical to a 3G network. I do see a practical limit however in the number of wireless hops before it should be bounced back to a wired network.

ghshephard• 12 years ago

"modern devices are down to less than a millisecond of latency per hop."

Excluding contention, and noise, which can result in missed channel transmit opportunities, latency on an RF Mesh is a function of the protocol (ALOHA, Slotted ALOHA etc...), packet size, and transmit speed.

In addition, if you are using the same radio transceiver for transmitting and receiving, you cut your performance exactly in half.

For a 100 kbit radio @ 256 byte packets, you are looking at approx. 50 msec/hop. It's not that surprising to have a 5 hop network in the field with about 400 msec latency before you get to the WAN backhaul.

The Tarana stuff looks interesting though - Here's hoping they can pull off everything they describe on their site.

snowwindwaves• 12 years ago

looks like they are using multiple radios on the same frequency and then also are able to overcome self-interference. I read an IEEE article about receiving and transmitting on the same frequency at the same time by subtracting the transmitted signal from the received to get only the signal from the remote radio. from their website " Perfect cancellation of co-channel interference " They also mention 'beamforming'.

sglapa3• 12 years ago

We most certainly can do what we say.

Check out http://youtu.be/o_3GUKsQ4CQ to see for yourself.

It's called "Seeing Is Believing" for good reason.

regards,

Steven Glapa (Tarana's marketing guy)

zwieback• 12 years ago

How is it different from the DIDO stuff we heard about a few years back:

http://www.nytimes.com/2014/02/19/technology/wireless-system...

http://www.rearden.com/DIDO/DIDO_White_Paper_110727.pdf

Tarana Wireless: connecting the last-mile with non-line-of-sight wireless

Related Stories