WLL – Wireless Local Loop

By: Diane Shired, CTM

Meaning of WLL – "Wireless Local Loop”, is a wireless connection of a telephone in a home or office to a fixed telephone network. It is a completion of subscribers loop to connect devices over a multiple access radio system to PSTN. This connection is different from a standard local loop. This connection to the telephone system is made wireless and without cables.

WLL is a technology that uses radio signals to substitute for copper wires and is sometimes call Radio in the Loop (RITL) or Fixed-Radio Access (FRA). The bandwidth is much higher than what is possible using the cooper loop. WLL is an economical and practical solution for connecting subscribers in areas that do not have a wired infrastructure such as rural areas and developing countries (Iraq and others). Developing countries look to the WLL technology as a way to extend POTS for millions of subscribers without the expense of purchasing copper wire.

There are various types of WLL technologies:

CDMA

GSM

IS136 TDMA

and analog access technologies such as Advanced Mobile Phone System (AMPS)

Wireless Local Loop technology has rapidly advanced over the last few years. To better understand the technology check the links below.

Other Related Definitions:

“As the leading manufacturer of the WLL products, Hantel sees this agreement as a great opportunity to expand its marketing base from South East Asia and South West Asia into the Middle East and North African regions. Hantel is committed as part of the strategic alliance with VoEx to develop technological products unique for these areas as part of its future road map.

Under this agreement VoEx in Phase 1 will market fixed wireless voice & data products; also known as WLL; capable of delivering excellent voice products tagged along with high speed data connectivity. Products will serve many consumers in residential areas of the cities, towns and villages of Iraq starting in 2006. Further, enhanced products being developed will serve the special specific needs of all the Ministries, hospitals, and major government facilities. Business users will have ample of products and services to cater to their special demands and cutting cost on the current costly satellite connectivity.

VoEx International is among the 17 consortiums that will be allowed to participate in the ongoing bidding & licensing process by NCMC in Iraq for a possible 2 national licenses for Iraq’s WLL Networks or a possible regional license (www.NCMC-IRAQ.org). This process is antcipated to complete and licenses awarded by February 2006.” [by KC Lee & Mr. Alnajjar - Hantel CO., Ltd.]

“Wireless Local Loop works on the principal of fixed cellular. WLL consists of a based station at the local exchange and a phone cell at the customers" premises plus a telephone receiver and a yagi antenna. A phone cell is connected to domestic/commercial power supply. It is most ideal for isolated places and vandalism prone areas. It is also good choice in places with adequate line plant and where terrain may not allow for lying of cables. Wireless Local Loop has increased mobility within the coverage area without attracting transfer fees, change of number etc.

The System which operates in the frequency range of 800-900 MHZ and covers a radius of 50Km from the cell site. Most of our Customers are in the Out-skates of Lusaka infact, as far as Chongwe, Kafue and Chisamba. Apart from the normal Telephone service on the system, terminal equipmet like Fax, Computers can be connected to the phone cell.

Wireless Local Loop is the best for farmers who cannot be reached by landline or overhead cables. This service is a fast deployment with a very quick return on investment. ” [Zambia Telecommunications Company Limited ]

Related Links:

International Engineering Consortium - WLL Technology Shake-Out
Globecomm - Fixed wireless communications solutions providing telephone ...
The Telmarc Group, Inc. - The Economic Viability of Wireless Local Loop

Technical Resources:

Capacity of DECT Wireless Local Loop
Wireless Local Loop - Research Assignment
Fixed Wireless Access / Wireless Local Loop Technology

Products and Solutions:

Switching
Wireless in Local Loop — Some Fundamentals
Wireless Local Loop

Blogs, News, Feeds, Discussion Lists:

Wireless Local Loop (WLL) - Latest News
Low Cost Technology And Rural India
Iraq moves ahead on spectrum licensing for wide-area, WLL operators
PTCL announces low rates
The Radio Spectrum & Tomorrow's Communication (Part II)

Books About:

Wireless Local Loops : Theory and Applications - by Peter Stavroulakis
Introduction to Wireless Local Loop (Artech House Telecommunications Library.) - by William E. Webb, William Webb
Wireless Local Loop Service Market [DOWNLOAD: PDF] - by Global Industry Analysts
Wireless Access Networks: Fixed Wireless Access and WLL Networks -- Design and Operation - by Martin P. Clark
Wireless Personal and Local Area Networks - by Axel Sikora

See Also:

Other WLL Related Resources

 

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