The 3G4G Blog

The last time I wrote about the free apps for field testing , many people came back and suggested additional apps that are much more common...

CW (a.k.a. Cambridge Wireless) held a very interesting event titled ' Time for Telecoms ' at the Science Museum in London. I man...

I recently did a small presentation on 3GPP Security, looking at the how the security mechanism works in mobile cellular networks; focus...

Looking back at my old post about UMTS & LTE (re)selection/handovers, I wonder how many different kinds of handovers and (re)selection...

In January 1985 the UK launched its first mobile networks. Now, thirty years on, many people and companies in the UK have been celebrati...

In the good old days when people used to have 2G phones, they were expensive but all people cared about is Voice & SMS. The ini...

While most people are looking at 5G from the point of new technologies, innovative use cases and even lumping everything under sun as par...

I added an answer on Quora but I think there can a a discussion on this. So here it is (embedded). Feel free to let me know what you think....

This presentation by Moray Rumney of Agilent (Keysight) in Cambridge Wireless , Future of Wireless International conference takes a diff...

Recently got another opportunity to hear from Andy Sutton, Principal Network Architect, Network Strategy, EE. His earlier presentation from...

Looks like a good idea from LTE will possibly be applied to UMTS/HSPA and it will also help accelerate the re-farming of GSM spectrum. A...

Present and future Standards for mobile internet and smart phone information security from Zahid Ghadialy Other related ...

I wrote this answer on Quora and as of yesterday there were 20+ upvotes. So here is an embed for the same: Read Quote of Zahid Ghadia...

Nearly a year and half back, I posted a blog about Fast Dormancy here . This issue has surely been fixed in most of the devices and the netw...

Another one from Qualcomm's 4G World presentation. You can see the number of scenarios that would have to be taken into account for; th...

UMTS 900/1800 View more presentations from Zahid Ghadialy

At the moment, transition from RRC states from UMTS to LTE can happen from CELL_DCH to E-UTRA_RRC_CONNECTED state via Handover or from UTRA_...

Picture Source: Tektronix The Network Mode of Operation (NMO) is also sometimes referred to as Network Operation Mode (NOM). The Network Mod...

Femtocells : Inexpensive devices to test UMTS security View more presentations from Zahid Ghadialy More presentations on this topic a...

Its been couple of years since the introductory post on 3GPP Earthquake and Tsunami Warning service (ETWS). The following is more detailed ...