User Manual

WipLL System Description
3-2 of 3-10 Issue 03
Draft 05
1QDF10134AAP-SYD-FCC
Figure 3-1: WipLL Cell
Subscriber Premises Radios (SPRs) are normally installed on a rooftop or a wall
which has a direct line of sight to the base station radio (BSR) and are pointed
towards the nearest base station or the base station that was assigned according to
the pre-planning of the site.
Base stations typically contain several BSRs for providing a full (360º) coverage as
well as enough capacity to accommodate the requirements of subscribers.
When a full area is covered, WipLL can provide services to tens of thousands of
users. The backbone must be able to carry the required capacity, delays and
connectivity in order to support the services and requirements of all users.
Prior to installation, a full site planning is required. Such planning normally includes
forecasts of the required capacity based on the number of users, typical subscription
contract, types of srevice, required bit rate per subscriber, etc.
It also includes radio planning for determining the best locations for BSRs – to
ensure full coverage, frequency allocation – to minimize mutual interference and
tilting options to determine the covered area for each sector of a base station.