Bwx 8305 Basestation Components - Cisco BWX 8305 Installation And Commissioning Manual

Chapter 3 Overview

BWX 8305 Basestation Components

Figure 3-1 BWX Mobilw WiMAX System Components
The BS performs the conversion of RF signals to digital signals for packets transmitted uplink (SS to
BS), and converts digital signals to RF signals transmitted downlink (BS to SS). The BS interfaces with
the BWG and either directs traffic to/from the BWG (residential service) or tags the traffic to route
to/from a private network (Business/Enterprise service). The BWX Antenna is the antenna that is
mounted on a tower, rooftop, or other structure. The BS is available as a BWX 8305 Basestation or as a
BWX 2305 Basestation. The BWX 8305 has an BWX Antenna with 8 antenna elements, while the BWX
2305 has 2 individual dipole antennas.
The BWX 8303 Basestation Timing System is required for WiMAX Basestations.
Note
The BS uses a Global Positioning System (GPS) antenna, connected to a BWX 8303 Basestation Timing
unit. The BWX 8303 Basestation Timing System (formerly known as External GPS Unit, EGU) is
mandatory for BSs in all WiMAX deployments starting with Release 7.0 and subsequent releases.
For network deployments, the BS with BWX 8303 Basestation Timing System is the only supported
configuration in WiMAX deployments for Release 7.0 and subsequent upgrades. Warranty and ongoing
TAC support on the BS only covers BSs deployed with the supported configuration. Existing customers
having BSs deployed with built-in GPS must order and install the BWX 8303 Basestation Timing
System as a prerequisite prior to performing software upgrade to Release 7.0 and subsequent
releases. One BWX 8303 Basestation Timing System supports up to three BSs at a cell site. Installation
of the BWX 8303 Basestation Timing System must be performed by qualified personnel to preserve
warranty for the BS at the same site.
For WiMAX deployments, an accurate timing system as the source of synchronization is a requirement for
the BS to function properly. The BWX 8303 Basestation Timing System provides this timing source to the
BS.
The maximum throughput varies by Model type and RF channel conditions.
BWX 8305 Basestation Installation and Commissioning Guide
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