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A test scenario of MPM based admission control device on NGN CJK test-bed

A test scenario of MPM based admission control device on NGN CJK test-bed. 15th NGN-WG 200 9 . 4.8-10 Test-bed Ad-hoc Group Norihiro FUKUMOTO , Hideaki YAMADA KDDI (KDDI R&D Labs.) no-fukumoto@kddi.com TEL: +81 49 278 7390, FAX: +81 49 278 7510. Agenda. NGN CJK test-bed

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A test scenario of MPM based admission control device on NGN CJK test-bed

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  1. A test scenario of MPM based admission control device on NGN CJK test-bed • 15thNGN-WG2009.4.8-10 • Test-bed Ad-hoc Group • Norihiro FUKUMOTO, Hideaki YAMADA KDDI (KDDI R&D Labs.) • no-fukumoto@kddi.com • TEL: +8149 2787390, FAX: +8149 278 7510

  2. Agenda • NGN CJK test-bed • Configuration of NGN CJK test-bed • Study phases • MPM based Admission Control Device • The purpose of Admission Control Device • Installation plan on NGN CJK test-bed • Burst Metrics • The behavior of Admission Control Device

  3. Configuration of CJK test-bed

  4. Phase I: 2006 3rd/4th Quarter (Completed) Network Connectivity Scenario 2 and 4 only (2 CS and 2 domains) Phase II: 2007 1st/2nd Quarter(Completed) Scenario 1, 3 (simpler version of 2 and 4, single domain) and 5 Study phases (Study scenarios) CJK NGN Test-bed • Phase IV: 2008 3rd ~ 2009 2nd Quarter • Performance Evaluation of RTP/RTCP-based MoIP and IPTV services • Performance Monitoring Scenarios 6-3 and 6-4 • Initial RACF Interoperability testing : Scenario 7 • Testing of RACF and RTP/RTCP-based MPM Interactions • IPTV Interoperability testing •  Test Admission Control Device in parallel Our Suggestion

  5. The purpose of the admission control device In Practical NGN • For disaster recovery • A fire wall, which confines local congestion caused by disasters to local areas • An admission control scheme, which works independently and locally • For avoiding excessive traffic in test-bed • Detect excessive traffic and suppress them automatically In CJK NGN test-bed

  6. Admission control device • Admission control device is implemented • An implementation of MPM subset • It is in accordance with Y.2173 • It works based on full passive measurement Fig. Admission control device, a subset of MPM with an admission control function

  7. Installation plan of Admission Control Device on CJK NGN test-bed

  8. Burst Metrics which represent congestion level • Following four parameters represent congestion level • Gap Density : Packet loss ratio in Gap periods • Gap Duration : Mean duration of Gap periods • Burst Density : Packet loss ratio in Burst periods • Burst Duration : Mean duration of Burst periods

  9. Burst Metrics – Four State Markov Model • Defined in RFC 3611 (RTCP XR) • Separate the RTP packet stream RTP into two periods • Burst period: High proportion of packet loss • Gap period: Low packet loss Fig. Four state Markov model

  10. The behavior of the admission control device(Measurement the burst metrics of each segment) Burstiness of packet loss in each network segment will be calculated. The burstiness represents congestion level. Fig. Burst metrics measurement scheme of the admission control device

  11. The behavior of the admission control device(Admission control) The device modifies signaling packets to perform admission control based on the measured QoS of each network segment Fig. The behavior of the admission control device

  12. Thank you for your kind attentions. Q&A This work is partly supported by the National institute of Information and Communications Technology (NICT).

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