Then thos without LOS to WiMAX rcvr will have to use 4G cell for data.
FYI WiMAX is 4G and is a NLOS technology, It is also a two way technology that requires both a receiver and a transmitter on the customer and base station ends. 4G cellular is a bunch of papers in standards committees, technology trials are expected to begin later this year and into 2011 of preliminary technology.
Here is some national background on the technologies. 4G Cellular is called LTE-Advanced in case anyone was wondering.
The two technologies are being developed internationally amoung many partners. LTE-A got it start as an idea the was sponsored by the EU with Ericsson making most of the early technology strides. They own the lion's share of the IPR and stand the most to gain from the introduction of the technology into the market. WiMAX was started a long time ago as a LOS data system. It evolved into the NLOS mobile system that it is today. It was primarily driven by IT type companies looking to bridge data distribution gaps cheaply. The system of today, 802.16e, was developed by three main companies, Motorola, Samsung, and Alvarion. That last one is an Israeli company that most people probably had not heard of before. Intel is also a big WiMAX player and is already including the technology in their microprocessor chip sets. The big operators in the US for WiMAX are Clearwire, Sprint, and Comcast.
In the US the LTE operator is Verizon. Although AT&T is looking seriously at LTE as well. This is all public knowledge and I am not giving away any secrets, nor will I. But both AT&T and Verizon own spectrum that would favor a FDD technology. LTE-A has that option in their proposed standard. WiMAX is a TDD technology. The technology choice comes down to who owns what type of spectrum allocation. FDD spectrum is hard to get and is very much being used to carry voice traffic. Deploying LTE in that spectrum will cause service disruptions and require everyone with a cellphone to upgrade eventually. This is something that American do not like to do. Just look and you will see people complaining about how their freebie analog bag phone they got 20 years ago no longer can be used. Or better yet look at the people complaining that they have to switch to digital TV.
Sprint and Clearwire own tons of TDD spectrum and have chosen WiMAX because it can be deployed in what is termed a 'greenfield'. They are not bumping anyone out and in the case of Sprint can keep their voice network intact. In the US there is also a lot more TDD spectrum available. While LTE-A does have a TDD mode, it was almost exclusively developed by China and contains enormous amounts of their IP which translates into an expensive technology to deploy. Only China has so far stated they will deploy that mode of LTE-A. This IP royalty issue is less with WiMAX since the IP is split between several players.
Free Internet has been tried in several communities with IEEE 802.11 muni-WiFi and for the most part has failed. The cost to cover is just too high. Free WiFi has worked in small venues like restaurants and other businesses. One of the wild cards in all of this is something called D-block. This is new spectrum, that is FDD allocated and is to be sold at a discount to a cellular carrier with the caveat of a certain amount of nationwide coverage and that it have the capability to be taken over by emergency service and public safety agencies when required. The DHS wants a nationwide wireless network. But it also wants private enterprise to pay for it. This may be their way to get it. But the last auction no one bid enough to win the contract award. It is being rebid.