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Table: Moving Data Over The Airwaves


Mobile Computing

TABLE: Moving Data Over the Airwaves

Some Promising Approaches

TECHNOLOGY DESCRIPTION USES ADVANTAGES DISADVANTAGES

CELLULAR Radio modems in Transferring files Available over Expensive

NETWORKS laptops use cellular existing

voice channels network

CELLULAR Packets of data Short bursts of Price, speed, U.S.

rollouts

DIGITAL fill idle gaps in data such as reliability behind

PACKET DATA cellular network messages schedule

PRIVATE Private radio Bursts of data Nearly Expensive

PACKET networks that nationwide for large

RADIO transmit coverage transfers

packets of data

ENHANCED Digital radio Fleet dispatch, Combines Limited

SPECIALIZED networks paging voice and data avail-

ability

MOBILE RADIO all-digital

DATA: DATA COMMUNICATIONS, BUSINESS WEEK


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