Deep Inside The Network: How UMTS And WiMAX Deal With Limited Uplink Power

Lately, I’ve been thinking a bit how different wireless systems deal with the fact that the power output of a mobile phone is much lower than the power output of the base station. In practice this means that uplink data rates per mobile phone can not reach the same level as in the downlink. Most … Continue reading Deep Inside The Network: How UMTS And WiMAX Deal With Limited Uplink Power

Insight Into Who Backs WiMAX And Who Opposes It

Ericsson recently announced that they will stop their WiMAX development and that they will instead accelerate their LTE development. The Register has taken up on this and has published a very interesting article by Wireless Watch on which companies are pushing WiMAX and which companies are rather opposed. So if you are interested in the … Continue reading Insight Into Who Backs WiMAX And Who Opposes It

HSDPA Antenna Fine Tuning

In previous blog entries on HSDPA (for links see below), I’ve been looking at HSDPA performance in operational networks from several different angles. Todays entry focuses on how sensitive an HSDPA card reacts to changes in antenna orientation. For my tests, I’ve been using a Sierra Wireless 850 PCMCIA notebook HSDPA adapter. The card has … Continue reading HSDPA Antenna Fine Tuning

Talkline Launches Try And Buy Offer for Mobile Internet Access

Recently, a number of German MVNOs have slashed prices for prepaid mobile Internet access. Now, mobile network reseller Talkline has launched a 60 day try and buy offer for mobile Internet connectivity for people with a usage that makes a contract more attractive than prepaid. During this time the two year contract can be canceled … Continue reading Talkline Launches Try And Buy Offer for Mobile Internet Access

Broadband Internet Is Not a Socket in the Wall

Here’s a statement made by Anssi Vanjoki at the recent Nokia World Conference: “Broadband Internet is not a socket in the wall, it is all around us”. He draws and interesting picture and I think he is right. Today, many people already use Wifi access points to create their personal broadband Internet cloud. Thus, the … Continue reading Broadband Internet Is Not a Socket in the Wall

Three Companies Get Nationwide WiMAX Licenses in German Spectrum Auction

It’s done, it’s over and it looks like it has been a great week for the wireless Internet in Germany. After a four day auction, three companies have each received a nationwide license to deploy Broadband Wireless Access (BWA) networks in the 2.5 3.5 GHz band. The three companies are DBD (Deutsche Breitband Dienste GmbH), … Continue reading Three Companies Get Nationwide WiMAX Licenses in German Spectrum Auction

3G Network Engineering: When Operators Cripple Their Networks

Several years after the start of 3G and some operators still struggle with their 3G network engineering. Unbelievable but true. Latest example: Wind in Milano, Italy. I’ve been using the Wind network already last year in Roma for several weeks and enjoyed great 3G coverage and performance. A year later, I am in Milano, a … Continue reading 3G Network Engineering: When Operators Cripple Their Networks