Cross layer monitoring in iptv network s
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“Group 0” Lei Zhang 3421970 Zhenyu Li 3429940 Peng Zhou 3429310 Xiaohang Yin 3434340 Mauricio Barreto 3358630 Nilram Azadpeyma 3371520. Cross-layer Monitoring in IPTV Network S. TELE 9752 – Network Operations & Control Group Presentation Week 12 – S2, 2013. OUTLINE.

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Cross layer monitoring in iptv network s

“Group 0”

Lei Zhang 3421970

Zhenyu Li 3429940

Peng Zhou 3429310

Xiaohang Yin 3434340

Mauricio Barreto3358630

NilramAzadpeyma 3371520

Cross-layer Monitoring in IPTV NetworkS

TELE 9752 – Network Operations & Control Group Presentation

Week 12 – S2, 2013


Outline

OUTLINE

  • Introduction

  • Aims and Challenges - Why

  • Monitoring Metrics - What

  • In-network & Client-side Monitoring – How & Where

  • The ALICANTE Monitoring Approach

  • Conclusion and Our Opinion


Introduction

introduction

IPTV: Delivery of multimedia content over IP-based networks

with guaranteed quality of service – paid service.

  • Why IPTV business is so attractive?

  • IPTV must compete with traditional TV delivery systems.

  • Very high reliability and QoS/QoE.


Introduction1

Introduction

content

content

service

service

network

network

IPTV

Traditional TV

To achieve comparable QoS/QoE IPTV needs:

Integrated service &

network management

Real-time monitoring

  • Monitoring must cover all layers in all system segments.

  • Cross-layer monitoring is essential!


Cross layer monitoring in iptv network s

aims

Even Small Impairments should be detected and mitigated.

  • Hierarchical structure

Figure 1. Typical architecture of an IPTV network. [7]

Service Assurance for IPTV


Required functionalities of an iptv monitoring system

Required Functionalities of an IPTV Monitoring System

  • Reactive

    • Response of the monitoring system to an abnormal situation.

  • Proactive

    • Behaviour of the monitoring system under normal operation.


Functions of monitoring

Functions of monitoring

  • Reactive (Fault Management)


Cross layer monitoring in iptv network s

Functions of monitoring

  • Proactive


Challenges

challenges


Monitoring metrics

Monitoring metrics

  • Cross-layer Monitoring

  • Parameters monitored in IPTV network:

    • User/QoE Metrics

      • User Perception

  • Application Metrics

    • During Decoding and Presentation

  • Transport/Network Metrics

    • Performance of the Corresponding Protocols

  • Other:

    • Protocol-Specific Metrics

      • FEC

  • User Behavior Metrics


  • In network monitoring

    In-network monitoring

    • Within the Distribution Network, Core, Edge, and Access.

    • Needs to be distinguished from overall network monitoring.

    • Mainly collects:

      • Transport/Network Metrics e.g. Packet Loss and Jitter

    • Packet filtering and sampling is often used due to huge traces.

    • Retrieval of measured metrics:

      • SNMP, IPFIX(Avoid overhead of SNMP/syslog)

      • Modern Routers and Switches

    • Higher-Layer Metrics

      • Application/Stream

      • Probe Modules

        • Number of Probes: Detection of Issue Vs. Cost and Complexity

        • Active Monitoring  Imposed Load /Traffic on the Network


    Client side monitoring

    Client-side monitoring

    • Performed at 3 points:


    Cross layer monitoring in iptv network s

    alicante monitoring

    Figure.Architecture of the ALICANTE monitoring subsystem.[7]


    Q o s q o e of the alicante

    QoS & Qoeof the alicante

    Maximization of QoS and QoE of media services is achieved.

    • a) via dynamic adaptation of media streams, taking place in the network and also at the edges.

    • b) via content-aware mechanisms in the network, performing automatic service recognition and differentiation.


    Cross layer monitoring in iptv network s

    alicante monitoring

    • Four sets of cross-layer metrics are identified corresponding to different elements:

    • Key feature: Decentralized Monitoring.


    Conclusions

    conclusions

    • Thorough monitoring can only be achieved through cross-layer monitoring.

    • All domains involved in IPTV service provisioning must be monitored.

    • The Alicante monitoring approach is a practical implementation of the principles of end to end service monitoring.

    • Decentralized monitoring allows adaptive management and promotes collaboration among actors and across domains.


    Our own opinions

    our own opinions

    • Lack of experimental support for ideas presented in paper. The paper is more an opinion piece than a research paper.

    • Conclusions should include: Use of virtual networks allows data to be shared without exposing commercially sensitive information.


    References

    referenceS

    [1] “IPTV Global Forecast — 2009 to 2013, Semiannual IPTV Global Forecast Report,” Nov. 2009, MRG Group Inc.

    [2] ITU-T Rec. G.1081, “Performance Monitoring Points for IPTV,” Oct. 2008.

    [3] L. Boula, H. Koumaras, and A. Kourtis, “An Enhanced IMS Architecture Featuring Cross-Layer Monitoring and Adaptation Mechanisms,” ICAS ’09), Valencia, Spain, Apr. 20–25, 2009.

    [4] ITU-T Rec. G.1080, “Quality of Experience Requirements for IPTV Services,” Dec. 2008.

    [5] ITU-T Rec. J.241, “Quality of Service Ranking and Mea- surement Methods for Digital Video Services Delivered over Broadband IP Networks,” Apr. 2005.

    [6] ETSI TR 101 290 V1.2.1, “Digital Video Broadcasting (DVB); Measurement Guidelines for DVB Systems,” tech. rep., May 2001.

    [7] BoulaL, Gardikis G, Xilouris G, et al. Cross-layer Monitoring in IPTV Networks[J].


    Cross layer monitoring in iptv network s

    Thank you!


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