Books I have co-authored

Net Neutrality: AT&T blocks unwanted traffic types in their mobile network

Many critics of the EU Telecom Package have feared that the principle of Net Neutrality will be undermined and abandoned. One example of this is TeliaSonera, which has blocked VoIP and P2P file sharing in their cheaper Swedish data plans Mobilsurf Bas and Mobilsurf Alltid.

In May, AT&T also limited their mobile data traffic. In their [...]

The telcos’ dilemma: LTE or HSPA+ (deja vu 2002)

Will financially burdened telco operators postpone investments in the 4G technology LTE? This has been an ongoing topic within the industry for over a year. LTE provides the operators with higher capacity, spectral efficiency, and data rates but requires heavy investments in new infrastructure. The alternative is to settle for the 3G upgrade HSPA or [...]

Why did the vision for public W-Lan networks fail?

Today it is obvious that business models that are based on public Wlan networks will never live up to the hype from 2002-2004. The dramatic price pressure for mobile data via 3G/HSPA undermined the market for Wlan operators. The choice is easy between spotty Wlan coverage and comprehensive geographical service with a 3G dongle.

Other players [...]