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NE40E V800R010C10SPC500 Configuration Guide - Value-Added-Service 01

This is NE40E V800R010C10SPC500 Configuration Guide - Value-Added-Service

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
EMDI Overview

EMDI Overview

Enhanced media delivery index (EMDI) allows E2E measurement of the multicast video service packets specified on each network node on an IP network so that performance indicators including the packet loss rate, disorder rate, and jitter can be obtained. EMDI has the advantages of easy deployment, full NE coverage, and high statistics precision.

Background

Multicast-based video services, including IPTV, are gradually deployed on carrier networks and have become a major profit opportunity for carriers. Quality monitoring of video services is of vital importance. Packet loss, disorder, and jitter are three major factors that may affect video quality. Even with less than 0.01% packet loss rate and disorder rate, terminals may experience erratic display or mosaic. Jitter may also lead to black screen. These problems severely affect the service QoE as well as the profitability and brand awareness of carriers. A video quality monitoring and fault locating solution is in need so that carriers can monitor and maintain service quality in real time and quickly demarcate faults and clarify responsibilities.

The EMDI detection solution is a quality monitoring and fault locating solution designed for multicast video services such as IPTV. This solution supports real-time detection of quality indicators (such as packet loss rate, packet disorder rate, and jitter) of real service packets, featuring high precision and reliable data support. In addition, this solution can be deployed on all network nodes from edge devices to core devices. The detection results on multiple nodes help to rapidly locate the faulty network segment.

Detection Principles

The EMDI detection solution is a distributed board detection solution. During solution deployment, the channels to be detected are added to a channel group, the EMDI-capable boards are added to a board group, and the channel group is bound to the board group. With detection on the board NP, the video streams of specified channels can be detected in distributed mode.

EMDI supports detection only of UDP-based real-time transport report (RTP) video streams. The NP of the board to be detected performs validity check and RTP check on the IP header, UDP header, and RTP header of RTP packets and calculates the packet loss and packet disorder based on the sequence number in the RTP header. Then, the NP calculates jitter based on the timestamp in the RTP header, achieving real-time monitoring of video quality.

Figure 1 shows the implementation process of EMDI.
  1. The uTraffic delivers EMDI monitoring instructions to a device.
  2. The device monitors EMDI indicators in real time.
  3. The device periodically sends the monitored EMDI indicators to the uTraffic on and reports EMDI alarms to the U2000 on a regular basis.
  4. The uTraffic displays EMDI indicators in GUI mode and supports analysis on fault demarcation and locating.
Figure 5-1 EMDI detection solution deployment

Indicator Collection

With EMDI, monitoring data can be obtained from a device on a regular basis and periodically send to the uTraffic in various modes such as Telemetry. After analysis on the uTraffic, the monitoring data can be displayed in a trend chart.

EMDI also supports reporting of alarms to the U2000. The alarm thresholds and the number of alarm suppression times can be configured as required.

Indicators

The detection indicators supported by EMDI include the packet loss rate (RTP-LR), packet disorder rate (RTP-SER), and jitter. The packet loss rate and packet disorder rate are calculated based on the sequence number in an RTP packet header. The jitter is calculated based on the timestamp in an RTP packet header. For details, see EMDI Detection Indicators.

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Updated: 2019-01-03

Document ID: EDOC1100055032

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