User's Manual

Chapter 1 - System Description
BreezeACCESSS VL System Manual
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Introducing BreezeACCESS VL
BreezeACCESS VL is a high capacity, IP services oriented Broadband
Wireless Access system. The system employs wireless packet switched
data technology to support high-speed IP services including fast
Internet and Virtual Private Networks. BreezeACCESS users are
provided with a network connection that is always on, supporting
immediate access to the Internet and other IP services at high data
rates. The system is designed for cellular-like deployment, enabling the
system architecture to vary in size and structure. A system can include
any number of cells, each containing several Access Units for better
coverage of densely populated areas.
The system supports Virtual LANs based on IEEE 802.1Q, enabling
secure operation and Virtual Private Network (VPN) services and
enabling tele-workers or remote offices to conveniently access their
enterprise network. The system supports layer-2 traffic prioritization
based on IEEE 802.1p and layer-3 traffic prioritization based on IP ToS
(RFC791).
BreezeACCESS VL products operate in unlicensed frequency bands in
Time Division Duplex (TDD) mode, using Orthogonal Frequency Division
Multiplexing (OFDM) modulation with Forward Error Correction (FEC)
coding. Using the enhanced multi-path resistance capabilities of OFDM
modem technology, BreezeACCESS VL enables operation in near and
non-line-of-sight (NLOS) environments. These qualities enable service
providers to reach a previously inaccessible and broader segment of the
subscriber population.
BreezeACCESS VL is designed to enable construction of “mixed” cells,
where it can be used together with other BreezeACCESS products using
GFSK modulation, including BreezeACCESS II, BreezeACCESS MMDS,
BreezeACCESS XL and BreezeACCESS V.
BreezeACCESS VL products are currently available in the following
frequency bands: