After some basic tests to see how HSDPA performs in a number of different networks I’ve now moved to a number of somewhat more complicated scenarios. The last article in this technical series on HSDPA focused on network and terminal HSDPA behavior for an incoming call. This article shows how the network behaves when several … Continue reading Network Behavior For Several Simultaneous Users In An HSDPA cell
HSDPA, EVDO, WIMAX, LTE, you name them, they all go advertising these days with "mobile can now do broadband, too". I think this is true to a certain extent, if one keeps in mind that overall capacity that can be delivered by a mobile system in a densely populated area can not match capacity of … Continue reading Broadband Was Yesteray – Wideband’s The Future
Ever thought file sharing of others could have an impact on your mobile device’s runtime on a battery charge? If not, read on: For DSL connections I think it is quite the norm rather than the exception that subscribers are assigned a public IP address. In wireless networks things are a bit different. While some … Continue reading How File Sharing Of Others Drains Your Battery
Spring is one of the best times of the year to be at the Côte d’Azur in France. While the weather and landscape is great, France is really missing attractive prices for Internet access over 3G. Not really affordable for post-paid customers, nothing is available for pre-paid customers at all. A good opportunity to use … Continue reading Vodafone Websessions with SFR in France
Some time ago I reported how Telstra and Ericsson have implemented UMTS cell ranges of 200km. This is mainly designed for very rural areas and I am not quite sure what kind of terminal is required at this distance to communicate with the cell tower. I very much doubt a normal cell phone will do. … Continue reading 3G Connections Over 15km
How delighted I was when I heard Nokia’s announcement that they would release their Nokia Maps (a.k.a. Smart2Go) mapping application for handsets other than the Nokia N95. Right after coming back from the 3GSM congress, I downloaded a copy for my N93 and used it in the past couple of days together with a Nokia … Continue reading Test Driving Nokia Maps / Smart2Go – Part 1
I couple of years ago I thought EDGE (Enhanced Data Rate for GSM evolution) would not have a big chance on the market with new technologies like 3G and later on HSDPA entering the market. An yet, EDGE has made it into many networks around the world. In some countries, 3G hasn’t made it beyond … Continue reading Evolved EDGE – The New Kid On the Block
All answers have been held as short as possible and require an understanding and study of the corresponding chapter of the book. Answer 1: The basic concept of the 5G Non-Standalone architecture is to add a 5G NR cell as a speed booster to an existing LTE radio and core network. It is different from … Continue reading 5G New Radio Q&A
All answers have been held as short as possible and require an understanding and study of the corresponding chapter of the book. Answer 1: Bluetooth transfer speeds depend on how many users exchange data in a Piconet, how much data is exchanged by the individual users at a certain time and what kind of multislot … Continue reading Bluetooth Q&A
All answers have been held as short as possible and require an understanding and study of the corresponding chapter of the book. Answers for the LTE and VoLTE chapters: LTE Answer 1: A 10 MHz FDD LTE channel is split into 600 sub-carriers. LTE Answer 2: X2 Handovers are performed directly between two eNodeBs while … Continue reading LTE and VoLTE Q&A