Friday 3 June 2011

Carrier Aggregation with a difference

Click on picture to enlarge

Another one from the LTE World Summit. This is from a presentation by Ariela Zeira of Interdigital.

What is being proposed is that Carrier Aggregation can use both the licensed as well as unlicensed bands but the signalling should only happen in the licensed band to keep the operator in control.

Note that this is only proposed for Small Cells / Femtocells.

The only concern that I have with this approach is that this may cause interference with the other devices using the same band (especially ISM band). So the WiFi may not work while the LTE device is aggregating this ISM band and the same goes for bluetooth.

Comments welcome!


3.14Mel said...


Sorry fot the off-topic but I have a doubt:

In LTE and LTE-A the frame structure are the same?

Thanks for the help!

Zahid Ghadialy said...

Yes, otherwise there will be chaos when the networks move to LTE-A.