Meeting mobile demand with a combination of spectrum alternatives

The laws of physics have not changed: Higher frequencies still require smaller antennas, while lower frequencies penetrate objects more easily. But technology to harness the potential of radio waves continues to improve, enabling us to both use frequencies not practical or possible in the past, and to employ ever wider radio channels that enable higher performance. The implications are far-reaching, likely to significantly change how we construct future networks. Spectrum policy decisions should be cognizant of such developments - if focused too sharply on today´s technologies and their limitations, they could undermine optimal future spectrum deployment. In particular, some of the current premiums placed on low-frequency bands are unwarranted. Two technology arenas illustrate progress in spectrum utilization: WiFi and cellular; which are discussed in this article.