The 3G4G Blog

While going through Anritsu whitepaper on VoLTE, I found this picture that explains the concepts of bearers in a VoLTE call well. From th...

Sometime back we had news about how VoLTE is battery killer and how it would suck our 4G phones dry. Well, I agree. I am no fan of VoLT...

Here is another presentation from Qualcomm from the '4G World'. CSFB Performance from Zahid Ghadialy With regards to S...

No wonder why LTE chipsets are complicated. From Qualcomm's presentation in 4G World, available here .

MetroPCS has recently launched rolled out VoLTE in USA using LG connect phones. More operators would be rolling it out soon so here is exa...

Another brilliant presentation from the LTE World Summit early this year Day 1-t4 roland-schott-20120523 from ceobroadband

Interesting presentation from Acme Packet in the LTE World Summit .

I have blogged about Semi-Persistent Scheduling (SPS) and Transmit Time Interval (TTI) Bundling feature before. They are both very importa...

Circuit switched-fallback-the-first-phase-of-voice-evolution-for-mobile-lte-devices from Prashant Sengar -x-o-x-o-x- Edited 20/05...

The following is from E\\\ whitepaper available here : In 2010, 6.9 trillion text messages were sent globally and this figure is expecte...

While in the initial testing CSFB timing used to be between 6-8 seconds, most Rel-8 phones can complete the CSFB procedure between 4-4.5 sec...

Nearly 2 years back I blogged about Orange launching HD Voice via the use of AMR-WB (wideband) codecs. HD voice is already fully developed...

When LTE is an overlay to a CDMA/EV-DO network, the current de facto standard for voice delivery is Simultaneous Voice and LTE (SVLTE). In ...

I did mention in the Twitter conversations post from LTE World Summit 2011 that there are now certain analysts and players in the market...

With LTE World Summit just round the corner, I was going through the last year's presentations and realised that we didn't talk of ...

I have explained CSFB with basic signalling here and there is a very interesting Ericsson whitepaper explaining all Voice issues in LTE ...

The following is from the recently released 4G Americas paper '4G Mobile Broadband Evolution: 3GPP Release-10 and beyond: With t...

The response to emergency situations (e.g., floods, hurricanes, earthquakes, terrorist attacks) depends on the communication capabilities of...

The Fact boxes in the Appendix give a very good quick overview of how different technologies work with VoLTE. Voice over LTE – a step towar...