Pull up a chair, Wi-Fi

There’s a place for Wi-Fi at the table. So say mobile operators, who used to believe Wi-Fi was a major threat to their bottom lines, according to a recent article in Fierce Wireless.

“Fast-forward to 2009 and the number of connections on AT&T's 20,000-some domestic hotspots totaled 10.5 million in the first quarter. By next year, In-Stat predicts 20 percent of all WiFi chipsets will reside in mobile phones. And BlackBerry maker Research In Motion has promised to include WiFi in its flagship CDMA BlackBerry starting next year, a move that CCS Insight handset analyst John Jackson describes as "seminal."

CDMA is coming to the Wi-Fi game much later than GSM, but it appears to be jumping in with both feet. Qualcomm is currently embedding 802.11 on chipsets, and the demand, they say, is coming from the operators.

When reviewing the benefits of Wi-Fi, well that’s where offload becomes a key consideration for operators in that it can help them offload some of the data traffic from the mobile network. In the end, it provides a better user experience.

Sorry Sprint

A very interesting opinion was posted to the GLG site the other day. Samual Greenholtz with Telecom Pragmatics opines that Sprint’s first choice for its home zone service was a dual-mode CDMA/Wi-Fi product. But lacking a DMH standard for CDMA networks, they were forced to settle for their second choice technology: femtocells.

With that, I say “Sorry Sprint”. It’s well known that there is no UMA/GAN for CDMA networks. With a 3GPP2 version of GAN, Sprint would have been free to choose dual-mode handsets, femtocells, terminal adaptors or even softmobile clients to run off their mobile network.

Is there an opportunity here?

VCC?!?! Still??? Really???

VCC, or voice call continuity, seems to still be hanging around in parts of the industry. I must say I continue to be shocked that anyone would even consider it.

First, it must be getting close to done, but for some baffling reason is not completed yet. I think VCC started back in 2005, the same as UMA. If you recall, UMA was actually ratified by the 3GPP in April 2005 (2G) and has since added 3G support, all in the same timeframe that VCC is still languishing.

My position has been and continues to be that VCC is for fixed operators. They have SIP core switches (a VCC requirement) and no direct connection to the mobile service core. I think dual-mode service for fixed operators is a tough sell for many reasons far beyond technology.

Of course, UMA is a 3GPP technology, therefore CDMA networks don’t have an equivalent approach. Some have suggested that these operators may opt for a dual-mode handset/VCC offer, but I think mobile operators in general are too smart to fall for the vendor community’s push on VCC.

VCC offers a different set of services to subscribers when on Wi-Fi than what’s available on the macro network. This is because the handset connects to the SIP core when on Wi-Fi, and to the MSC when on cellular. Different core networks support different services. It’s inconceivable to me that any mobile operator would attempt to roll out a service which didn’t work the same across the entire network.

Frankly the CDMA operators are simply going to do femtocells for their ‘home zone’ service offers. Witness Sprint and Airave. They must have a response to Wi-Fi-based home zone offers like T-Mobile’s HotSpot @Home, and femtocells are a viable alternative.

UMA is the only viable technology for dual-mode services. Period.