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acc.com

Long Term Evolution (LTE)


News

PSCR testing extended-cell LTE for rural use

PSCR testing extended-cell LTE for rural use

Initial downlink tests indicate data throughputs up to 16 MB/s at the cell edge--which in this case is 48 miles from the tower site.
  • Written by
  • 18th December 2013

Conventional wisdom has been that public-safety LTE makes economic sense in metropolitan, urban and even some suburban areas, where capacity demands support the establishment of many cell sites located relatively close together, with coverage typically extending less than 3 miles from the site.

The corollary to that is that there is no way to justify the costs associated with installing so many sites in rural areas, which is one of the strongest arguments for LMR remaining the public-safety communications technology of choice in locations with sparse populations, according to conventional wisdom.

But conventional wisdom is being challenged at the Public Safety Communications Research (PSCR) laboratories in Boulder, Colo., where researchers are testing coverage and performance of extended-cell—or “boomer-cell”—technology, according to Emil Olbrich, PSCR’s head of research and development.

“A normal cell site might have a cell radius of 2-3 miles,” Olbrich said during an interview with IWCE’s Urgent Communications. “We’re looking at extending that beyond 30 miles, up to 100 kilometers—a 62-mile range.”

Initial tests—which involved transmitting a signal from a 1,000-foot tower owned by the National Oceanic and Atmospheric Administration (NOAA) to standard Category-3 LTE vehicular modems with external antennas, using 200 milliwatts of transmit power (the same power as a commercial cell phone)—have been encouraging. They revealed that the extended-cell technology delivers data throughputs of 10-16 MB/s at the cell edge—48 miles from the tower, according to Olbrich.

Later this month, PSCR plans to complete uplink testing and some in-vehicle testing of standard LTE dongles, Olbrich said.

Tags: Public Safety Long Term Evolution (LTE) News NIST/PSCR Public-Safety Broadband/FirstNet News

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One comment

  1. Avatar Mat 9th April 2014 @ 4:35 pm
    Reply

    The “boomer cell” concept has
    The “boomer cell” concept has been in commercial use for many years. Back in the IS95 days, Nortel used boomer cells in Australia to cover vast areas in order to mitigate otherwise impossibly expensive RAN buildout.

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