User Guide

AB-Access Config & User Guide 5.5 Axxcelera Broadband Wireless
July 27, 2004 Company Confidential Page 33 of 129
5.9 Topology Types
To properly deploy the AB-Access System, one must understand the geographical
physical topology. While the real world possibilities are endless, the following three
distinctive geographic topologies will be covered:
• Macrocells
• Microcells
• Picocells
A Macrocell design should be used when you are trying to provide ubiquitous coverage
over a large area. Each cell has many Subscribers. The fundamental limit in deploying
in this manner is usually coverage zone (cell radius) due to U-NII, ISM & ETSI EIRP
limits, as well as building and terrain obstructions.
A Microcell is normally used when you are trying to provide high-density coverage to a
smaller geographic area. Each cell sector has many subscribers per sector. The
fundamental limit in deploying in this manner is co-channel interference due to LOS
interference paths.
A Picocell design normally covers an extremely small geographic area such as a
neighbourhood or a Multiple Dwelling Unit (MDU) complex. There are normally many