Chapter 1 - System Description Introducing BreezeACCESS 4900
BreezeACCESS 4900 3 System Manual
1.1 Introducing BreezeACCESS 4900
BreezeACCESS 4900 is a high capacity, IP services oriented Broadband Wireless
Access system operating in the 4.9 GHz licensed spectrum band allocated for
public safety. The system employs wireless packet switched data technology to
support high-speed IP services including fast Internet and Virtual Private
Networks.BreezeACCESS 4900 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 both Point-to-Point and Point-to
Multipoint configurations, supporting data, VoIP and video applications.
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. In
addition, it may use the optional Wireless Link Prioritization (WLP) feature to fully
support delay sensitive applications, enabling Multimedia Application
Prioritization (MAP) for high performance voice and video. The implementation of
MAP through the unique WLP protocol revolutionizes the business model by
increasing, for example, the number of simultaneous VoIP calls per sector by as
much as 500%.
BreezeACCESS 4900 uses advanced security mechanisms, including WEP128,
AES128 and FIPS 197 compliant encryption algorithms.
Using OFDM modem technology and high power radios, BreezeACCESS 4900
offers an unmatched combination of wide coverage, high capacity and
value-added features to provide wireless connectivity that works also in near and
non line of site (NLOS) conditions.
The Complete Spectrum solution enables the BreezeACCESS 4900 to integrate
seamlessly into other BreezeACCESS networks. Supporting both fixed and mobile
platforms at multiple frequency bands, the Complete Spectrum enables
simultaneous deployment of systems at 900 MHz, 2.4 GHz, 3.5 GHz, 4.9 GHz, and
the entire 5 GHz band.
BreezeACCESS 4900 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 4900 enables operation in near and non line of sight (NLOS)
