giovedì 5 febbraio 2009

Telefonate via Ip per le navi

Una notizia che ci permette di capire di come il mondo delle comunicazioni marittime sia ormai lontano anni luce dalla radiotelegrafia e dalle onde corte, un nuova tecnologia permette di installare a bordo una "microcella" GSM che permette di connettere via IP i cellulari di bordo usando la trasmessione via satellite. Ecco l'articolo:

http://news.bbc.co.uk/2/hi/technology/7867091.stm


Mobiles connect across the waves

Merchant seafarers will be able to communicate with their families

The days of running off to sea to escape problems on land could be over as mobile connectivity hits the ocean.

Irish mobile maritime communications company Blue Ocean Wireless has teamed up with picocell developer ip.access to develop the system.

For crews, separated from their families for months on end, the ability to be able to make and receive calls from their mobiles will be a big boon.

Previously merchant ship crews had to rely on expensive satellite phones.

The new system will also rely on satellite communication. A picocell - a small base station that extends mobile coverage - will be installed in accommodation areas of the ship.

Connected to a remote gateway, it will convert a mobile call into a narrowband IP signal for transmission over the satellite network.

Picocells are increasingly being used to extend mobile coverage to places where exterior signals cannot penetrate, such as office buildings, ships and aircraft.

Air chat

UK-based ip.access has already done a series of deals which have put picocells onboard ferries and cruiseliners.

Extending the service to merchant ships will "bring the benefits of mobile cellular communication to seafarers who spend so much time away from friends and family," said ip.access chief executive Stephen Mallinson.

Typically such picocells are used by mobile operators on 'terra firma" to boost indoor network coverage in buildings and for business customers in offices.

But anywhere where traditional GSM coverage is difficult could potentially be a candidate for using picocells.

British Airways has announced that it will be using picocells on planes from the autumn.

It will enable air passengers to send and receive text messages and access the internet using a smartphone or GSM-enabled laptop but BA is stopping short of allowing voice calls.

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Andrea Borgnino IW0HK - HB9EMK
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