said by AnonDOG :
If there is anything the model shows with certainty it is that the mesh node needs to be dirt cheap and brain dead simple.
Michael, I am in total agreement on this. Also, it is curious that we always wanted to deliver the StarAPs packaged as replacement street lamps.
However, we encountered a serious problem trying to design a $250 "uniform" mesh node in 2003. The 166Mhz MIPS CPU inside Atheros AR5002-AP SoC could not do a good job running both secure WiFi and mesh routing.
So, I decided to go with a non-uniform mesh design concept where a $500 StellarPortal (Via Eden 533Mhz) will do the dynamic route calculation using association requests, observed RSSI and traffic congestion feedback from a constellation of $100 StarAPs.
The StarAP was developed on same FPGA/Ubicom/Agere radio platform as our WISP CPE. There are photos of the PCB layout in an old post but we never managed to build it.
Currently, Atheros AR5007 SoC platforms ($25-$35) will be good for the StarAP while multi-radio StellarPortals can be made with Gateworks boards for ~$250.
I could not post the whole file, but I am copying a small section on the Stellar Mesh concept together with the overall 3-level architecture for large-scale urban deployments.