Engineering Services for Protocol Implementation, Test SW Design & Test Support
in Cellular Wireless Technology

Technical Papers

The technical papers are listed in reverse chronological order and supplied with a brief statement of contents:

LTE-Advanced - Release 10 Features Overview

July, 2012
Technology update

Short abstract of LTE Rel-10 introduced main features:

  • Carrier Aggregation (CA),
  • Downlink and Uplink Transmission Enhancements,
  • Relaying,
  • Heterogeneous Networks (HetNet) and Enhanced Inter-Cell Interference Coordination (eICIC),
  • Self-Organising Networks (SON),
  • Minimisation of Drive Tests (MDT),
  • MBMS Enhancements

In addition, an introduction into Coordinated Multipoint Transmission (CoMP).

Signalling Compression - SigComp

July, 2006
Technology update

Signalling Compression - abbreviated SigComp - is defined by a series of RFCs. The technology shall be applied in mobile networks to reduce bandwidth demand for signalling - especially when text-based protocols like SIP are used in the context of the 3GPP IMS (IP Multimedia Subsystem).
Kai Tetzlaff and Dieter Flick have commonly analysed the technology and Kai has presented the results to a customer whose products may need to support SigComp.

The 44-slide presentation covers the:

  • SigComp functional architecture
  • Universal Decompression Virtual Machine (UDVM)
  • Static SigComp dictionary for SIP
  • Implementation requirements and
  • Performance aspects

Proposals for SigComp implementation in a customer product have been omitted in the public version.

Presentation about HSDPA

March, 2006
Technology update

An introduction to the techniques used to increase bandwith on the UMTS radio interface elaborated and presented by Marija Skoda as a technology update for her adare team colleagues.

The presentation covers the technical approaches for HSDPA implementation, the channels newly introduced in UMTS Release 5, the impact of HSDPA on the UMTS protocol architecture and a selection of HSDPA mobility aspects. The presentation closes with a brief outlook beyond Release 5.

Open Mobile Alliance (OMA)

Standardisierung mobiler Anwendungen
October, 2005
Lecture presentation

The 58-slide presentation provides an introduction to the standardisation of mobile applications and was an industry contribution to a lecture on mobile networks at the Stuttgart Media University.
The presentation covers a series of aspects as:

  • What is OMA?
  • How does standardisation work?
  • The development process for technical specification of mobile applications
  • PoC - an example for a mobile application
  • Even more specifications: Tests to insure interoperability
  • Product example: Conformance tester
  • adare - protocol implementation and test automation for mobile technologies

IMS and PoC Strategy Workshop

January, 2005
Workshop presentation

The 48-slide presentation provides an introduction into the IP Multimedia Subsystem (IMS) architecture and Push to talk over Cellulare (PoC) as a first popular service which will be provided on the Basis of the IMS architecture in future. The relevant technical specfications under work in the 3GPP (for IMS), OMA (for PoC) and IETF (basis) are identified and explained.