pdf_gross.gifQuality of Service (QoS) - Issues & their Resolution in evolved 3G and Next Generation Networks

[3-day training course, Euro 3,450.- per participant]

backtotop.gifTraining Course Description

Course Description

  • This training course is a must for everybody who needs to setup, engineer, upgrade or operate packet-switched networks supporting both, real-time and best effort traffic.
  • In the beginning of the training course we pinpoint to typical issues with QoS-definition and perception, depending on organizational association and service orientation.
  • This part ends with a very important practical exercise and discussion about the basic question: Problem resolution through network engineering or over-provisioning?
  • The following part reviews important QoS-profiles and attributes steming from 3GPP, IETF, WIMAX-Forum and from the ITU-T. We also define a generic QoS-profile with mandatory attributes and we assign value ranges to these attributes suiting specific applications.
  • Special focus is on the determination of necessary bandwidth resources for different traffic types like voice, video or combinations. We point out the pros and cons of header compression and silence suppression.
  • The training course continues with the elaboration of important QoS-techniques like admission control, traffic conditioning, policing and policy enforcement. Different approaches and their pros and cons are discussed and jointly elaborated.
  • In the next part we review important IP-related QoS-architectures and their specifics, namely DiffServ, IntServ and MPLS. This part concludes with the presentation and review of layer 2 related QoS-tags like ATM-based VCI/VPI or the priority pointers as defined in IEEE 802. 1p.
  • Almost the entire next chapter is dedicated to the detailed presentation and discussion of all messages of an example scenario, based on the IMS, which provides e2e QoS between two peers, applying two different access network types and intermediate backbone networks.
  • The final chapter is dedicated to the clarification of how QoS is physically provided within the lower layers 2 and 1, specifically.
  • At last we elaborate that QoS to a large degree is nothing else but intelligent scheduling, irrespective of whether it is applied in landline or wireless networks. However, we also point out the specific issues of QoS in mobile networks e.g. using HSDPA or HSUPA.

Some of your questions that will be answered

  • Why is it so difficult to achieve and provide QoS in packet-switched networks?
  • Why is sophisticated packet network engineering becoming more and more important
    nowadays and in the future?
  • How do all these QoS-terms like QoS-profile, QoS-attribute and QoS-class or traffic class
    relate to each other?
  • Which QoS-attributes are required in a QoS-Profile?
  • How do VoIP compare to legacy voice services, considering resource consumption and
    requirements? What can we do to optimize our network accordingly?
  • What are the settings of these QoS-attributes to provide suitable performance for different
    service types?
  • How do QoS-related functions like policing, admission control and traffic shaping relate to
    each other?
  • What are the differences between the QoS-architectures DiffServ, IntServ and MPLS and how
    do they operate in detail?
  • Which parameters are used in different layer 1 / layer 2 environments like for instance
    WIMAX- or UTRA-networks to tag certain QoS-levels?
  • How do these layer 1 / layer 2 environments interact with other protocols that need to
    simultaneously operate e.g. for session setup or user data transfer?
  • How does an end-to-end scenario look with full QoS-provisioning?
  • Is it possible that a DSL-modem / WLAN-router at home provides QoS? If yes, how does this

backtotop.gifWho should attend this class?

  • The training course is mainly targeted at network operator staff who need to upgrade today’s networks to become QoS-aware.
  • However, the training course is also a must for everybody on the vendor side who involved in one section of the overall network to design QoS-aware equipment.


  • Participants need to be already familiar with typical QoS-issues and the history of QoS. This should stem from previous exposure to design, troubleshooting or operations jobs in telecommunication networks.
  • Advanced IP-skills are required. If necessary we recommend to participate to our basic and advanced IP-courses.
  • Advanced skills of either WIMAX- or GPRS/UMTS-mobile networking are required.

backtotop.gifTraining Course Target

  • The training course enables the students to identify the essentials to setup QoS in their specific environment, in their specific networks.
  • The student will be able to align the various proprietary and sometimes vendor-specific QoS-architectures and techniques with a generic and independent QoS-architecture.

backtotop.gifTraining Course Duration

  • 3 days