Master engineer, Sony Mobile Communications, Sweden

Master engineer, Sony Mobile Communications, Sweden

Daniel Lönnblad, Master engineer, Sony Mobile Communications, Sweden is speaking on Day Two of the LTE North America conference, taking place on the 21st-22nd November 2013, in Dallas, Texas, USA. Ahead of the show we speak to him about implementing VoLTE on Sony handsets.

What are the latest developments that Sony is working on with its handsets?

Sony has multiple interoperability testing (IOT) activities in its carrier lab and is also directly working with network vendors.

Which technology is going to be more important for carriers – WebRTC or RCS?

It is hard to say which will be most important; they are both technologies that enable a richer calling experience. With the right APIs RCS could be a very strong offer for third-party software vendors, at least in mobile phones.

What needs to be done on a smartphone to make it VoLTE compatible?

VoLTE in a smartphone needs to be implemented from the start and a lot of IOT is required before going live, including phone to phone IOT. Sony sees HD Voice as connected to VoLTE but also understands the need to cater for excellent audio quality throughout the system.

Do you think VoLTE with its benefits such as HD Audio, quick call set-up time, video calling and file sharing can be used to increase ARPU?

Voice revenue is believed to be decreasing so all additions to classic voice and SMS is believed to keep voice relevant and soften the decline.

What’s your advice for those carriers planning their VoLTE implementations?

Ensure compliance to IR.92 – this is essential for making VoLTE the same as circuit switched voice. Also ensure thorough device-to-device IOT, since VoLTE is something new compared to legacy voice which was terminated in the network. Also, it’s important for the industry to make sure VoLTE roaming happens not too long after its launch.

The LTE North America conference is taking place on the 21st-22nd November 2013, in Dallas, Texas, USA. Click here NOW to download a brochure for the event.

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