Overview of DoCoMo's Present Network Operations ... - apnoms

NTT DoCoMo Inc. Confidential and Proprietary　

Overview of Overview of DoCoMoDoCoMo’’s s Present Present Network Operations Network Operations

&&Introduction of Developing Network Introduction of Developing Network

Operation SystemOperation SystemSatoshi OYAMADASatoshi OYAMADA

Network Management Development DepartmentNetwork Management Development DepartmentNTT DoCoMo, Inc.NTT DoCoMo, Inc.

EE--mail: mail: oyamadasoyamadas@@nttdocomonttdocomo.co..co.jpjp

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NTT DoCoMo Inc. Confidential and Proprietary　

Outline

Topic 1) Overview of DoCoMo’s Network Operations- Progress of Mobile Communication Network

- OSS Architecture

- Network Management

- Network Provisioning

- Network Element Management

Topic 2) Introduction of Developing New System- Background & Objectives

- System Configuration

- Effects

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Progress of Japanese Mobile Network

1G: Analog1G: Analog

2G: Digital (PDC)2G: Digital (PDC)

3G: IMT-2000 (W-CDMA)3G: IMT-2000 (W-CDMA)

Voice & data(e.g. DoPa in 1996 ,

i-mode in 1999)

Voice

Multimedia service and high speed data communications

Voice, data, images, videos etc.

1993-

2001-

1979-

PDC: Personal Digital Cellular

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Progress of DoCoMo’s Network (1)

PDC

MDE

PSTN /ISDN / PLMN

POI

MS

BCE

P-MDE

SPE PPM

MLS

PGW

Business Information System(Accounting, Contract etc.)

VoiceVoice

PacketPacket

STM

-Before IMT-2000

-Two approaches for IMT-2000

-Constructing a new network

-Reusing the 2G network

MGS / MTS

MIS

NMSCP

ISP/ Mopera/ i-mode

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Progress of DoCoMo’s Network (2)

IMT-2000PDC

BTS MDE

PSTN /ISDN / PLMN

POI

UEMS

BCE

P-MDE

SPE

MPS

G/T-MMS

PPM

MLS

MPE

L-MMS

RNC

PGW

STM

ISP/ Mopera/ i-mode

ATM

Business Information System(Accounting, Contract etc.)

MIS

NMSCP

MGS / MTS

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ServiceManagement

NetworkManagement

NetworkElement

Management

Network Element

Service Front Terminal

RAN Planning

NE FileStation DataManagement

PathManagement

OSS ConfigurationManagement

QoS Monitor

Network Monitor

Network Control

Major AlertAggregation

Call Processing Alert Aggregation

Traffic DWH

RANNEM

CNNEM

TransmissionNEM

SCPNEM

Design TerminalsQuality Analysis Terminal

BTS RNCSW

SCP

Transmission SW BTSRNC

OPE (NW Monitor & Control)

OPE (Backyard)

CN Planning

ProcessManagement

RAN Design

CN Design

TransmissionDesign

Configuration Part

Overview of OSS Architecture

OPE: Operation Equipment DHW: Data Warehouse

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Network Management Features

● Monitoring- Easy Recognition of the Network Status and its

Characteristics

● Control- Adequate Network Control Capability for Improving

Service Quality and Increasing Revenue from Traffic

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Monitor Network Quality

Identify the cause of network fault

Recovery of QoS→ Network Control

Call Loss Rate, Actual Usage Rate,

NE Congestion NE major alertNE status

Verify the action of NE Monitor

operator

Recovery action for NE failure

Monitor NE failureNetwork MonitorNetwork Monitor

Network AnalysisNetwork Analysis

ActionAction ActionAction

OPE: Network Monitor

NE AnalysisNE Analysis

NE MonitorNE Monitor

NetworkNetwork

Individual NE

BTS RNC SW SW

BS SW

Identify the cause of NE failure

Scope of Network Control Scope of Facility Maintenance

OPE: Backyard

OPE: Network Monitor

OPE: Network Monitor OPE: Backyard

XC

Transmission

NMSCP

OPE: Backyard

Overview of Network Monitoring & Control

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Network Monitor & Control GUI: Sample

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Network Provisioning Features

● Quality Management, Planning & Design- Realizing network quality control and facility design

in effective and flow-through manner

● File Upgrade- Remote controlled and one-touch file upgrade on the

network elements

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Business Information System(Accounting, Contract etc.)

Schedule/Process Management

RAN NEData

RAN NEs CN NEsTransmission

NEsNetwork

Planning & Design

Planning Data

NE Data Management, Distribution

QoS Analysis Terminal

RAN NEM CN NEMTraffic Information

Unified Management

Traffic DWH

Unified Management

CN NEData

TransmissionNE Data

Network Quality Management

Transmission NEM

RAN Design

CN Design

TransmissionDesign

Planning

Network Management, Planning & Design

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NTT DoCoMo Inc. Confidential and Proprietary　

ServiceManagement

NetworkManagement

Elementmanagement

Network Element

Service Front Terminal RAN

planning

RANdesign

CN design

NE FileStation datamanagement

OSS configurationmanagement

QoSMonitor

NetworkMonitor

NetworkControl

Traffic DWH

RANNEM

AssociatedOSS

CNNEM

SCPNEM

Station data

Operation data

BS RNCSW

SCP

transmission SWBSRNC

Planning & Design

OPE

OPE Backyard

Traffic(real- time)

Quality Analysis

Traffic (batch)

Design information

CN planning

Network Monitor &

Control

Data Flow-through

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□□□

Consistency Check,upgrade commands

…

Autonomous messages

Status query

Switch 00

Switch 49

Station 00

Station 49

Operation Center

Conventional Operation System

□□□

□□□

File transfer,File upgrade

Same operation

Monitoring task only

File Transfer and File upgrade Operation for multiple Switches from one single

window

Monitors multiple switches from one single window

Reducing labor

FOCUS

Saving $1Ma year

Consistency Check,upgrade commands

…

Switch 49

Switch 00 Consistency Check,upgrade commands

…

Consistency Check,upgrade commands

…

□□□

□□□

ParallelOperation for50 switches

Zero fieldengineers

Same operation50 fieldengineers

Operation Center

Parallel File Upgrade Function

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Network Element Management Features

● Network Element Management- Remote and concentrated network monitoring

and control

- Quick fault analysis and recovery through user

friendly graphical interface

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INS

PR

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MSCS

CSP CLP TSWC RMP OMP EATMS CEXTSCLKS

LICS

SGCS

LTS

B-DTS

A-DTS

SDHS

IPUS

OPSS

TRKS

CMPS

ATIS

SIGS

ACIS

PSUS

STIS AIFS

CRSWS

Element Management: Sample

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NTT DoCoMo Inc. Confidential and Proprietary　

Introduction of New Operation System

● System’s NameNetwork Operation Knowledge System

(or simply Knowledge System)

● Timetable

Dec. 2003: File Provisioning for Knowledge System

Early Spring in 2004: Service In

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NTT DoCoMo Inc. Confidential and Proprietary　

Background of System Development

BS

（１）Problem with Work Intervened by Maintenance Personnel

Node NE Maintenance

Personnel

Link NE Maintenance

Personnel

Access NE Maintenance

Personnel

Workstation

Workstation

Workstation

Workstation

Workstation

Workstation

SWRNCTransmission

SW

Status Communicated

Status Communicated

Status Communicated

Fault !

NEs

Fault Messages

Fault Messages

Fault Messages

Fault Messages Fault

Messages

Spend much time to identify failed point

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Workstation

Workstation

Green Maintenance Person

Maintenance Manuals

System Developer

（２）Problem with Different Levels of Skill among Maintenance Persons

？？

SW

Fault !

Fault Messages

- Inaccurate Operation- Late Response

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Background of System Development

NTT DoCoMo Inc. Confidential and Proprietary　

Objectives of Knowledge System

Based on the previously identified problems with the current operation work, we have started developing our Network Operation Knowledge System, with the following objectives:

　　 １）Reduction in Maintenance Workload　　

２）Reduction in Time to Recover from Severe

Faults

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NTT DoCoMo Inc. Confidential and Proprietary　

Schematic Overview of Knowledge System

BS SW BS RNC

NEs for PDC (2nd Generation)

NEs for IMT-2000(3rd Generation)

SW

NEs for Future Implementation(4th Generation)

ＮＥs

OSSs for NE Management

OSSs for Network Control

Information TransferNetwork

Network Operation Knowledge System

NE-FS

CASE

FOCUS

OSSsfor Provisioning

□□□ □□□

□□□ □□□

□□□

□□□

Fault Messages

Control Control Reference

Fault Messages

ＴＣＳＴＣＳ

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Configuration of Knowledge System

Network Operation Knowledge System

OSSAdapter

System Management Server

Data ManagementServer

Work ExecutionControl Server

System ManagementTerminal

Work ExecutionControl Terminal

NE-OSSs

NC-OSSs

Environment to GenerateFault Recovery

Action Scenarios

Node NE-OSS

Access NE-OSSs

Link NE-OSSs

Workstation

Workstation

Workstation

Workstation

Workstation

Workstation

● Main Features　- Multi-module Configuration to Ensure Expandability - Creation of Scenarios for Fault Recovery Work Processes

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Effects (1)

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●Workload Reduction- Effect in workload reduction is expectable because

Knowledge System executes monitoring

& troubleshooting instead of maintenance persons.

Monitor ing35%

CompilingData29%

Troubleshooting

15%Installat ion9%

Other9%Train ing

3% Effects in workload reduction are expectable in portions shown in yellow (Monitoring and Troubleshooting).

[Example] Workloads at DoCoMo’s Network Operation CenterNode System Access/Link Systems

Monitor ing24%

Troubleshoot ing

20%

CompilingData43%

Installat ion4%

Other5%

Train ing4%

NTT DoCoMo Inc. Confidential and Proprietary　

Effects (2)

● Shorter Downtime- Effect in shortening recovery time is expectable

because Knowledge System performs message

analysis automatically.

Work flow after system introduction

Process B

Effect 1: Reducedtroubleshooting

time

Access mainte-nance division

Node mainte-nance division

Standard work flowProcess A Process C Process D

Process E

Process X Process Y

Access mainte-nance division

Node mainte-nance division

Effect 2: Reducedoperation through

automation

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Conclusions

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● Basic OSSs are now complete.- Network Management OSSs, Network Provisioning OSSs

and Network Element Management OSSs

● Intelligent and Integrated OSS is developing.- Network Operation Knowledge System