SLIDE 1
Confidential Confidential
Application of Application of Loss Metrics to Loss Metrics to - - PowerPoint PPT Presentation
Application of Application of Loss Metrics to Loss Metrics to - - PowerPoint PPT Presentation
Application of Application of Loss Metrics to Loss Metrics to Multimedia Multimedia Streams Streams Nagarjuna Venna Nagarjuna Venna Kaynam Hedayat Kaynam Hedayat IPPM WG IPPM WG November 2006 November 2006 Outline Outline Need
SLIDE 2
SLIDE 3
Confidential Confidential
Industry need: Consistent metric for monitoring
Industry need: Consistent metric for monitoring media stream performance in IP networks media stream performance in IP networks
Packet level loss metrics based on RFC 3357 are
Packet level loss metrics based on RFC 3357 are very useful and simple to understand; they are very useful and simple to understand; they are applicable to media applications applicable to media applications
Need for a clear understanding of the
Need for a clear understanding of the applicability applicability
The Need The Need
SLIDE 4
Confidential Confidential
Based on current IPPM Metrics
Based on current IPPM Metrics
Consistent and predictable Scalable
Content agnostic
Content agnostic
No decoding of content Based on packet headers
Use in network operation
Use in network operation
Meaningful and actionable metrics
Requirements Requirements
SLIDE 5
Confidential Confidential
Problems
Problems
Large “Frames” Multiplexed Media Streams
Specify how to compute metrics
Specify how to compute metrics
Media Loss Media Loss Period and Media Loss Distance Percent media loss Complete/Partial media loss Number of loss events Noticeable loss events, noticeable loss rate
Proposal Proposal
SLIDE 6
Confidential Confidential
Proposal Proposal
Media Stream DeMux (Transport specific) Playout Buffer (application specific) Media Loss Period Media Loss Distance
S1 S1 S2 S2 S3 S3 S1 S1 S2 S2 S3 S3
IP Packe IP Packets
Derived Metrics % Loss Media % Noticeable Loss Complete/Partial media loss Number of loss events Noticeable loss events Noticeable loss rate Derived Metrics % Loss Media % Noticeable Loss Complete/Partial media loss Number of loss events Noticeable loss events Noticeable loss rate Existing Metrics Packet Loss Packet Loss Period/Distance Noticeable Loss
SLIDE 7
Confidential Confidential