Did you know that by entering a shortcode on most Android phones, you can access a hidden menu which gives you a lot of information about the network and device, including radio frequency used (ARFCN) and signal performance?
In a previous post I presented how to calculate the maximum throughput of LTE, and this was focusing on LTE FDD (Frequency Division Duplex), where an equal bandwidth of spectrum is allocated for both the Downlink and the Uplink. As a reader asked, in this post we do the same for LTE TDD (Time Division Duplex) a.k.a TD-LTE.
More and more operators are announcing the shutdown of their 2G network, in a move to reallocate the spectrum for data services on 4G and better utilize the resource to deliver content to their subscribers. Telstra in Australia will be the next in line in December 2016, and many other operators are scheduled for 2017.
You probably heard this strange robotic noise from your speakers when a cellphone was nearby and about to receive a call or an SMS. But do you know why this audible noise interference happens and why the sequences of buzz is always exactly the same?
Snapdragon just announced the X16 LTE Modem that can achieve 1 Gbps throughput thanks to higher order modulation (256 QAM), 4×4 MIMO and 4x Carrier Aggregation of 20 MHz. But how can we calculate the maximum theorical peak LTE throughput depending on those parameters?
I often had to explain in simple terms the concepts of Busy Hour and Busy Day to non-technical colleagues while working on network capacity planning. Eventually I decided to come up with a simple illustration that helped me a lot to clarify the concept. This is what I am sharing today.
While manufacturers and operators keep introducing evolutions of voice communications standards in order to improve voice quality, it feels like mobile voice quality is often lagging behind VoIP apps such as Messenger, WhatsApp, Viber.