Tiny Transmitters Could Help Avert Data Throttling

Major carriers, arguing that their networks are clogged with smart-phone and tablet traffic, are increasingly implementing data throttling, the practice of targeting heavy users by slowing down data-transfer speeds. Now a gadget invented at Bell Labs—a programmable, pint-sized transmitter that requires no new traditional cell towers—could rapidly add capacity and thus help avoid data bottlenecks.

The gadgets are known as light radio cubes. Measuring just six centimeters on each side, they are miniature transmitters and receivers that can be programmed to work flexibly in different contexts to add capacity. Two devices together can serve a compact area such as a stadium or train station—handling just as much traffic, in that compact area, as a whole cell tower can serve a wider area. A cluster of 10 to 20 of them can form an array that replaces the transmitters atop a typical cell tower. They can boost capacity in part by collectively reshaping the radio beam in real-time toward the incoming signals to optimize performance.