CJKTest-bed

CJKTest-bed

CJK test-bed study- progress report -

17th CJK NGN-WG2009.11.16-17

Test-bed Ad-hoc GroupHideaki YAMADA (TTC)

hd-yamada@kddi.com

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Scenario 6-1: Performance evaluation of Network Segments

Scenario 6-2: Performance evaluation of MoIP service among CPEsLocal testing of MPM (Provided by KDDI R&D Labs.)CPE-to-CPE performance evaluation

Scenario 6-3: Performance evaluation of MoIP service with two MPMsCPE – MPM1 – MPM2 – CPE performance evaluation

Scenario 6-4: Performance evaluation of MoIP service with three MPMsCPE – MPM1 – MPM2 – MPM3 – CPE performance evaluation

Scenario 7: Testing of RACF and RTP/RTCP-based MPM Interactions

Study scenarios

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Progress of the study

CJK NGN Test-bed

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

Phase IV: 2008 3rd ~ 2010 2nd Quarter

Completed Performance evaluations; Scenarios 6-1, 6-2 and 6-3

On going / In preparation Performance evaluations using the SBC-based MPM devices IMS-Call Server interworking for the MoIP services

Coming Tests : Scenario 6-4 and 7 RACF(Admission control device) - MPM communicationsEvaluations of the video transmission quality

KDDI R&D Labs..

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MPM 機器 :KDDI 研究所提供

System configuration 1

KDDI R&D Labs.

Korea (ETRI)China

(CATR)

CPE (PC)

MPM by KDDI

Call Server Call Server

SIP Server/IMS

MPM by KDDI

MPM by KDDI

CPE (PC)

CPE (PC)

CPE (Cell phone)

Cell phone

Video terminal hardware

PCベースのMPM (SBC; Session Border Controller based）

Vendors

NTT R&D Labs.

OKI

PC based MPM

SBC based MPM

RACF(Admission control device)

KDDI R&D Labs..

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MPM 機器 :KDDI 研究所提供

System configuration 2

KDDI R&D Labs..

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China (CATR) Korea (TTA) Japan (TTC)

IP Network C-K: R&D network C-J, K-J: Commercial networks(or R&D network)

CPE for Voice over IP

CPE used in Phase I&II are applicable • Software based CPE supporting the RTCP extensions such as SR/RR/XR/HR

for Video over IP

- - • Hardware based CPE• Support RTCP SR/RR/XR video

Service Platform Call servers used in Phase I&II IMS

MPM MPM (Software/Hardware)

PC based MPM and ATCA based MPM (by OKI)

RACF - In preparation -

Performance measurement

KDDI R&D Labs..

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Upgrade of the CS platform so that other tests can be available including PSTN interworking, IAD, Access Gateway, RACF support.More discussions on QoS capability deployment for transport (e.g., MPLS)Preparation for the testing

- Test-case specification, system setup, testing scenarios- Expansions of performance monitoring evaluation system (SBC

based MPM system)Finding collaboration opportunities with other related testing programs (e.g., BcN test-bed, CATR studies)

Next steps

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Given the situation of interconnectivity among various NGN networks, MPM will become a very important node for traffic observation.We have been investigating the possibility of analyzing network quality by observing traffic at MPM.

Detection of the network anomaly through traffic analysis at MPM with the following steps.

#1 Create Network anomaly by intentionally generating instability to wireless link#2 Collect packets capturing data at MPM (Japan)These packets might contain not only our experiment traffic but also various traffic in CJK test-bed.

#3 Extract the packets that relates to network anomaly through our analysis.#4 Detect network anomaly point i.e. instability of wireless link in Japan

<Previous result shown at 16h CJK Meeting>

<Current Status>

Study using the SBC based MPM (by OKI)

OKI’s system

KDDI R&D Labs..

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Note: MPM stands for Management of Performance Measurement for NGN. It is based on the ITU-T Recommendation Y.2173. MPM used throughout this document is a system realized based on the capabilities defined in ITU-T Y.2173.

CPE – MPM1 – MPM2 – MPM3 – CPE (segment: MPM-to-MPM, MPM-to-CPE)中国　　　　　　　 日本　　　　　　　韓国　

Definition of the Segment of the evaluations

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The RTP/RTCP based passive measurement

Delay and delay-variation are important to ral-time applications such as VoIP and video streaming. Real time protocol, [IETF RFC 3550]) is a transport layer protocol for real-time applications. RTP is designed to be independent of transport or network layer protocols. An RTP packet has time-stamp and sequence-number fields in its header. A passive collection system which resides in either TEs or BGs can evaluate packet loss and delay variation.

RTCP is an optional control protocol for RTP. Furthermore, RTCP extensions, such as the RTCP‑XR (RTP control protocol extended reports, [b-IETF RFC 3611]) are also optional control protocols for RTP. Participating TEs exchange RTCP and RTCP-XR packets. In a RTCP and RTCP-XR packet, performance metrics of its application services are reported. TEs also are able to evaluate rough round-trip delay with these packets.

Figure Configuration of the measurement points.

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Standardization RACF and MPM communications (Rec. Y.2111 Revision 2)

A new reference point called Rm between RACF and MPM in Rec. Y.2111 was added. Several specifications of Rm are based on Rc ones.

Figure Generic resource and admission control functional architecture.

RACF

Service Control Functions

Network Attachment Control Functions

Other N

GN

sO

ther NG

NsTRC-FE

Rn

Service Stratum

Transport Stratum

PE-FE

PD-FE

TRE-FE

Transport Functions

Rc Rw

Rt

Rs

Ri

Rd

RpRu

CGPE-FE

CPN

RmManagement for Performance Measurement

Rh

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Thank you for your kind attentions.Q&A

This work is partly supported by the National institute of Information and Communications Technology (NICT).

KDDI R&D Labs..