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Wireless Local Loop
(WLL) |
Definition and Overview
Definition
Sometimes called radio in the loop (RITL) or fixed-radio access
(FRA), WLL is a system that connects subscribers to the public
switched telephone network (PSTN) using radio signals as a
substitute for copper for all or part of the connection between the
subscriber and the switch. This includes cordless access systems,
proprietary fixed radio access, and fixed cellular systems.
Overview
Industry analysts predict that the global WLL market will reach
millions of subscribers by the year 2000. Much of this growth will
occur in emerging economies where half the world's population lacks
plain old telephone service (POTS). Developing nations like China,
India, Brazil, Russia, and Indonesia look to WLL technology as an
efficient way to deploy POTS for millions of subscribers—without the
expense of burying tons of copper wire.
In developed economies, WLL will help unlock competition in the
local loop, enabling new operators to bypass existing wireline
networks to deliver POTS and data access. So the question isn't will
the local loop go wireless, but when and where. This tutorial
discusses the basics of WLL and examines the markets and future for
this technology.
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