Wireless Local Loop (WLL) is a generic system that uses wireless links rather than traditional copper wires to connect consumers to the local telephone company’s switch. It is also known as Fixed Wireless Access (FWA).

What is WLL and how does it work?

            Wireless Local Loop (WLL) is a technique that uses radio signals to connect subscribers to the PSTN, replacing copper for all or part of the connection between the subscriber and the switch.

         Cordless access systems, proprietary fixed radio access, and fixed cellular networks are all examples of this. WLL phones link to a wireless infrastructure in the same way that CDMA phones do in homes, offices, and even boats.

         Fixed cellular networks, proprietary fixed radio access, and cordless access systems are all examples of this. It often connect to AC current rather than using batteries.

This below picture shows how the subscriber connects to the base station through RF,

WLL components:

   PSTN – Public Switched Telephone Network

   WANU – Wireless Access Network Unit.

   Switch Function switches the PSTN among various WANUs.

   WASU – Wireless Access Subscriber Unit.

Features of WLL:

     It provides internet connection via modem.

    Data, voice and fax services.

Advantages of WLL:

     It eliminates the construction of network connection.

     The cost is low, since no copper wires are used.

     Because of the digital encryption technology, it is more secure. 

     Lower maintenance and operational costs.

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