| |
Lucent increases capacity of 3G CDMA2000 base station
December 18, 2002
Lucent Technologies today introduced a capacity-increasing chip
that will be integrated into its new flagship 3G CDMA2000 base station
unveiled last week, the Flexent Modular Cell 4.0, and future products
in the Flexent OneBTS family of base stations. The "ASIC," or application-specific
integrated circuit, was developed by the mobility team in Lucent's
Bell Laboratories and incorporates intelligent antenna capabilities
that enable these base stations to support substantially greater
volumes of voice and data traffic.
Mobile operators that deploy 3G CDMA2000 1X networks already can
double voice capacity over existing 2G CDMA networks. Lucent's ASIC,
which supports CDMA2000, also can deliver an additional two-fold
increase in capacity by utilizing the intelligent antenna feature.
It also can boost data capacity by more than 100% to accommodate
the growing demand for mobile high-speed data services, and this
can increase overall data throughput delivered directly to consumers.
"Mobile operators that invest in the Modular Cell 4.0 and our
future CDMA2000 base stations will be able to manage the ever-increasing
need for voice capacity, and growing demand for mobile data services
among businesses and consumers, for years to come," said Paul Mankiewich,
CTO and chief architect of Lucent's Mobility Solutions Group.
The Modular Cell 4.0 is "pre-wired" to support intelligent antenna
capabilities, which provides mobile operators with a simple and
cost-effective way to add capacity.
Without per-user intelligent antenna processing, a base station's
antennas produce a wide-angle radio signal beam that transmits to
all users in a given area. However, with per-user intelligent antenna
processing, the base station sends a separate, dedicated, narrower
beam to each active user, which adaptively follows them as they
move through the base station's coverage area.
Transmitting simultaneous, dedicated beams to each active user
makes more efficient use of spectrum and reduces interference, resulting
in capacity gains.
Lucent's intelligent antenna processing techniques also are applied
to the "reverse link," or the signal a base station receives from
a mobile device when a voice or data call is active. The combination
of intelligent antenna processing at the base station -- in both
the signal transmission and reception of signals from mobile devices
-- makes the overall system capacity gains possible.
Capacity and performance improvements from the Lucent intelligent
antenna ASIC can be realized whether a mobile operator's customer
base consists of 2G CDMA or 3G CDMA2000 users, or a mix of both,
without the need for modifications to today's 2G CDMA or 3G CDMA2000
cell phones or devices.
The high-density ASIC, which includes the intelligent antenna feature,
will be integrated into Lucent channel cards, which can be used
to further enhance the capacity of the Modular Cell 4.0, and future
CDMA2000 base stations in the OneBTS family.
|
3G Motorola A920
