The 3G4G Blog

There seems to be a good amount of research going on in higher frequencies to see how a lot more spectrum with a lot more bandwidth can b...

From a press release by NTT Group : Nippon Telegraph and Telephone Corporation (NTT, Head Office: Chiyoda-ku, Tokyo, President and CEO...

This year at MWC, I took the time out to go and see as many companies as I can. My main focus was looking at connectivity solutions, inf...

One of the things that will come as a result of NSA (Non-StandAlone) architecture will be the option for Dual Connectivity (DC). In fact,...

A startup on kickstarter is touting world's first voice mask for smartphones. Having said that Hushme has been compared to Bane ...

Looking at a paper (embedded below) from NTT Docomo technical journal where they talk about Dedicated Core Network (DCN) for handling dif...

NTT Docomo's recent technical journal has quite a few interesting 5G articles. While it is well known that 5G will be present in Jap...

Last year's summary of the LTE voice summit was very much appreciated so I have created one this year too. The status of VoLTE can...

There was an interesting discussion on different roaming scenarios in the LTE Voice Summit on 29th, 30th Sep. in London. The above pictu...

VoLTE is a very popular topic on this blog. A basic VoLTE document from Anritsu has over 40K views and my summary from last years LTE Voi...

VoLTE has been a very popular topic on this blog. My overview of the LTE Voice Summit missed out narrowly from the Top 10 posts of 2014...

Machine-to-Machine UICC, also known as M2M Form Factor (MFF) and is often referred to as embedded SIM (eSIM) is a necessity for the low d...

In the last post where I talked about FeICIC I mentioned about the advanced Interference rejecting receivers, here is one very good ar...

Its been a while since I last blogged about WebRTC. Things have been progressing as rather fast pace in this area. WebRTC capabilities...

Quick recap of the Bearer Architecture: Remember the interface between S-GW and P-GW is known as S5/S8. S5 in case the S-GW and P-GW are...

Voice over LTE or VoLTE has many problems to solve. One of the issues that did not have a clear solution initially was Roaming. iBasis h...

Single Radio Voice Call Continuity (SRVCC) has been quietly evolving with the different 3GPP releases. Here is a quick summary of these...