Introducing Breezenet B - Alvarion BreezeNET B System Manual

Chapter 1 - System Description
1.1

Introducing BreezeNET B

BreezeNET B is a high performance wireless bridge system that provides
high-capacity, high-speed point-to-point links. The BreezeNET B system utilizes
advanced technologies to support optimal performance in spectrally polluted
environments. BreezeNET B products operate 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, BreezeNET B 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. The system also features adaptive modulation for
automatic selection of modulation schemes, including BPSK, QPSK, 16 and 64
QAM to maximize data rate and improve spectral efficiency.
Where allowed by applicable radio regulations, BreezeNET B supports the use of
40 MHz frequency channels. When using 40 MHz channels, the BreezeNET B is
operating in the "Turbo Mode". The use of this "Turbo Mode" increases the net
throughput of the BreezeNET B link, especially for links that suffer from low net
throughput due to challenging link budget conditions that result from very long
link distances, RF absorbing terrain or non line of sight. Alternatively, the Turbo
Mode can extend the range of the BreezeNET B while the capacity is maintained
constant.
BreezeNET B supports sensitive applications through optional use of
authentication and/or data encryption utilizing WEP or AES algorithm with 128
bit keys. FIPS (Federal Information Processing Standards) 197 certified encryption
algorithm is available free of charge for unit with HW Revision C or higher.
The wireless link prioritization feature fully supports delay sensitive applications,
enabling Multimedia Application Prioritization (MAP) for high performance voice
and video.
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 either IP ToS Precedence (RFC791) or DSCP (RFC2474). It
also supports traffic prioritization based on UDP and/or TCP port ranges.
BreezeNET B products are currently available in the following frequency bands:
BreezeNET B 3
Introducing BreezeNET B
System Manual