Wi-Fi will continue to evolve as the best way to spread a network over an office or home or small area in which a cloud of service is needed. WiMax will probably evolve as a great replacement, alternative, or complement to fixed wired and mobile wireless services. That is, instead of an ADSL line or T-1 line, you might have a WiMax receiver on your roof or an antenna in your window. Instead of a cell phone that uses 3G to carry video or a cell data card for accessing a 3G network, you might have a WiMax-equipped laptop or phone.

Wi-Fi is a local distribution tool to push bits among users connected nearby; with many Wi-Fi base stations using the same name, you can build seamless coverage on a college campus, city park, or corporate campus. While it’s being used for metro-scale deployment, that’s because it’s the best worst solution. It’s not designed for that purpose, but everyone already has a Wi-Fi adapter, the technology works in unlicensed spectrum avoiding that issue, and it’s highly commodified making parts cheap across the supply chain for consumers, vendors, and network builders.

Right now, you can get WiMax or WiMax-like fixed broadband pretty readily in most major U.S. cities and in a lot of urban and rural areas worldwide. It’s very competitive in performance over shorter distances when you get to or over T1 or E1 speeds (roughly 1.5 Mbps each way). Several providers in the US already compete in some cities, and offer incentives like 24 to 48 hours from order to live access and free antennas and receivers with long-term contracts. Switching from a T1 to the equivalent of two T1s over fixed WiMax is often about the same price—sometimes a little less, sometimes a little more.

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