Oireachtas Joint and Select Committees

Wednesday, 7 July 2021

Joint Oireachtas Committee on Transport, Tourism and Sport

Broadband Infrastructure: Discussion

Mr. Hugo Carvalho:

In the context of dead or low-signal areas, fixed-line broadband acts as a solution for that. The solution is directional antennae. Basically, you get an antenna and point it in the direction of where the base stations are located. I ask the members to think of it as being like the following. If I play some music in my office and I want people to hear it 100 m away, I need to get a better loudspeaker. That is what we do with antennae. We get better loudspeakers so that the tower can hear us better and we can hear the tower better. It is bidirectional. As we have said, in dead zones where there is zero signal, even if we have a high gain, and antennae have different gains, it is about how well the loudspeaker can talk or hear. There might be places where there is zero signal, but it will be rare.

In terms of competing for bandwidth, the Deputy is right. Each cell has a limited capacity. The capacity is the number of users who can connect to it or the throughput that the cell can distribute. In terms of the number of users, you see it, for example, when you go to a stadium or a concert and you try to make a phone call at half time. Everyone is trying to send WhatsApp, Facebook and Instagram messages at the same time. We call it a bottleneck. Everyone is trying to go through the same space and there are too many users. It also happens with cells in remote areas.

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