LTE networks vulnerable to inexpensive jamming technique

Targeting a small portion of the signal with a laptop and a transmitter costing about $650 could knock offline an LTE base station serving thousands of people, according to researchers who raised concerns last week over the technology's planned use in a national public safety broadband network.

"An example strategy would be to target specific control or synchronization signals, in order to increase the geographic range of the jammer and better avoid detection," the Wireless @ Virginia Tech research group said in a filing (PDF) submitted to the National Telecommunications and Information Administration.

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