New Ways to Solve Your Cell Phone Dead Spots
Ready to abandon your landline, but stymied by poor indoor cell reception? Two new technologies, one that lets you make calls over your home wireless network through your cell phone and another that uses tiny, inhome cell towers called femtocells are emerging to fill gaps in cell coverage. Both services make use of your broadband connection to route in-home cell phone calls over the Internet using VoIP, but they let you make and receive calls directly from your mobile handset, with your regular cell number. You can start a call indoors over broadband and continue it outside over cellular, and vice versa. According to early adopters, both systems are transparent to use and both function well.
Your Own Cell Tower
Sprint’s Airave system places a miniature cell tower, called a femtocell, in your house. The service is being tested in Denver, Indianapolis, and Nashville, and is set to roll out to the rest of the country in 2008. The Airave hooks up directly to your broadband router. When in range of the Airave, any Sprint handset will connect automatically to the device, which will then transmit calls over the Internet. As many as three handsets, from a pool of up to 50 registered or authorised phones, can make or receive calls simultaneously on a single femtocell. Additional callers are routed to the nearest cell tower.
Early adopted users report that hand offs between tower and femtocell work well and that call quality is excellent. Sprint charges US$15 per month per line for unlimited calling (US$30 for a family plan), in addition to US$50 for the Airave hardware.
The Home Hotspot
T-Mobile’s HotSpot@Home went nationwide this summer. It uses hybrid handsets that switch from a cellular network to Wi-Fi when you move into range of a hotspot. But built-in Wi-Fi isn’t enough, as special circuitry must perform the hand offs between the Wi-Fi and cellular networks. Only a few handsets work with the service: Nokia’s 6086, Samsung’s t409, and RIM’s newest BlackBerry Curve. And though any Wi-Fi router will work with the service, T-Mobile sells optimized models from D-Link and Linksys that promise to provide better voice quality and to extend your handset’s battery life. (Wi-Fi is a big power eater.)







