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  • Where Does SDN Start and End in 5G?

    So, here’s the deal: we live in a world filled with acronyms, right? I think most of us are accustomed to this, and pretty much ok with this way of life. We can laugh about it at the water cooler, which doesn’t make it less painfully true, but at least we share the pain with our fellow human ... read more

  • Not Only IP Packets in 5G

    On high level, the design criteria for 4G (aka LTE or EPS) were simple and straightforward: a system for transporting IP packets between a terminal (the UE) and the edge of the operator network (the PGW), thus connecting the UE with some external Packet Data Network, e.g. the Internet. Yes, and ... read more

  • FREE 5G WEBINAR – Dec 5th

    Time for a Free 5G Webinar on December 5th! 5G is quickly becoming a buzz word, with promises of attractive features, new revenue streams and enhanced user experiences. But what is reality, and what is just hype? Will 5G be the new cash cow operators and system suppliers alike are looking for? ... read more

  • Control Plane/User Plane split

    The 3GPP standards for 5G assume separation of the Control and User Planes as a mandatory (and basic) network feature. Looking at the development history of the various 3GPP-defined networks this is not a surprising fact. The split architecture concept has appeared as long ago as 3GPP Release 4, ... read more

  • Will SMS Outlive Us All?

    Short Message Service While working for a well-known Swedish telecom equipment company in the mid 1990’s, me and my colleagues one day stumbled upon specs for a brand-new GSM service; SMS. “What an incredibly stupid idea” was our common verdict. “Nobody will ever send a Short Message to ... read more

  • How Diameter tried to take over

    Years ago the world of core network signalling of the 3GPP mobile and fixed networks was full of specialized, ever-expanding protocols from the SS7 family: ISUP, MAP, INAP, CAP… Each designed to support yet another novel service concept – digital voice calls, services of Intelligent ... read more

  • Very sleepy devices | IoT

    In the Internet-of-Things there are various classes of devices with various requirements. Among them there are devices that 1) need to survive very long time (months, years) on a single, regular-capacity battery and 2) do not need to be reachable from the network or application server side. An ... read more