itu conference-study group 13 kampala – uganda 2-4 april 2012
DESCRIPTION
Status of Implementation of IMS/IMT The UTL Perspective. ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012. Presenters. Richard Adongu Core Network Planning Engineer Uganda \Telecom MIT, B Sc. (Phy/Math), PGD C. SC. (MUK) CDM (CMI, UK) E-mail: [email protected]. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/1.jpg)
ITU Conference-Study Group 13Kampala – Uganda
2-4 April 2012
Status of Implementation of IMS/IMT
The UTL Perspective
![Page 2: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/2.jpg)
Presenters
Richard AdonguCore Network Planning Engineer
Uganda \TelecomMIT, B Sc. (Phy/Math), PGD C. SC. (MUK)
CDM (CMI, UK)E-mail: [email protected]
Ocira OyaroRadio Network Planning Engineer
Uganda \TelecomB Sc. Phy/Math (MUK)
Certifications: Radio Access TechnologiesE-mail: [email protected]
![Page 3: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/3.jpg)
AbstractThe global world is moving to convergence in all fields; economy, political and social life, education, technology, etc.
The field of ICT in particular, is developing at a much faster rate and convergence is becoming the defining term for fixed and mobile networks.
This paper gives a brief outline of IMS/IMT technologies which are central in achieving FMC. It uses Uganda Telecom networks as a case study to define the road map for achieving IMS/IMT.
Different operators may have different scenarios, that may necessitate following a different road map, however the ultimate aim or end result is to achieve FMC.
![Page 4: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/4.jpg)
Outline
IMS – The Concept /Overview
UTL - Existing Network
Why the Move to IMS?
The Challenges
IMT
![Page 5: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/5.jpg)
IMS : OverviewIP Multimedia Subsystem (IMS)
Conceptually analogues to Biblical(John 14:" My Father’s House, has many rooms..”)- all can be accommodated, is;-
Most Unifying/Seamless technology or platform:- wire line, cable, internet, wireless all togetherA requirement for transiting to a fully converged, open and distributed architectureFrom high demand for integration for delivery of IP multimedia services using integrated devices (smartphones, etc.)
![Page 6: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/6.jpg)
IMS - Layers and Protocols Protocols: All NGN (SIP, H323, H248, MGCP, SIGTRAN), Diameter, Legacy-SS7, R2, V5.2.Layers: Three (3) - Application, Control and UserApplication: Provision and Management of Services, defines interfaces to common functions - configuration storage, identity management, user status e.g. presence, location held by Home Subscriber Server (HSS); billing services by a Charging Gateway Function (CGF), control of voice/video calls, messaging Control: Routes signaling, enables transport plane to traffic filter, generates billing information, Call Session Control Function (CSCF) with functions like: security, resource allocation, queries, call processing, authentication, etc. are performed and other serversUser/Access: Provides access from User Equipment (UE) over mobile,WiFi and broadband networks. Access into core is via Border Gateways (GGSN/PDG/BAS) that enforce IMS Core policies, controlling traffic flows between the access and core networks.
![Page 7: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/7.jpg)
IMS - Core Architecture/Layers
![Page 8: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/8.jpg)
IMS - Core Functions
Runs all NGN Core functions
Call controlMedia Gateway Access ControlResource AllocationProtocol ProcessingRoutingAuthenticationChargingApplication Programming Interfaces (API)Web based and presence services
![Page 9: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/9.jpg)
IMS - ServicesAll NGN and Legacy Services
Voice - Basic, Supplementary (Wake up, Call waiting, CLI),xDSL, ISDNIP FaxIP Centrex, IVRMultimedia Services:- Video, instant messaging, program sharing, electronic white board, video conferencing/streamingIN Services:- card calling, advanced prepaid calling, VPN, Number Portability,
Unified/Smart Services:- unified messaging, colour dial tone, instant messaging.Business Services - SIP Trunking, SIP CentrexResidential Services- Voice and video telephonyIP Voice and IP Video mailVoice and Video conferencing
![Page 10: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/10.jpg)
UTL – Current Network Status
PSTN/TDM/Legacy Voice and Data Nodes
TDM switches, Leased line data nodes, ADSL DSLAMs, ADMs, SGSN/GGSN,
NGN Nodes
NGN structure is four layered:- Application, Network Control, Core Switching, Edge Access
Nodes: Soft Switches (Soft3000 & MSoft3000), MSANs, Media Gateways, IADs, Media Gateway Controllers, Application Servers, IN, Media Resource Servers, Signalling Gateways, SHLR/VLR.
![Page 11: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/11.jpg)
Architecture of UTL Existing Network
![Page 12: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/12.jpg)
UTL- Current Services Offered POTs, ISDN, xDSL, V.5.2, leased line GSM, GRPS, 3G, WiMAX Hosted PBX IP Centrex Tele-conference calling Video Conferencing VPNs Soft phone Services Unified Messaging Platforms Colorful Ring-back Tone Alarm Call Sequential Ring Number Portability 3rd Party Customized Services
All these will be offered by IMS
![Page 13: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/13.jpg)
Why the Move to IMS?
Drivers include the need to:-Move from Legacy TDM and NGN to integrate networks/services – Service integrationMeet customer unified service expectationsInnovate new applications/service offerings-multimedia services/unified communicationReduce CAPEX & OPEX-one network, many servicesFollow fast paced technological trends
![Page 14: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/14.jpg)
UTL - IMS Network Structure
![Page 15: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/15.jpg)
UTL IMS – The Transition Model
Vendors and operators are at an IMS war : Each, is saying; the Other is not ready;
Despite absence of 100% Universal IMS standard, the transition:-
Has to be gradual/evolutionary: moving from TDM to NGN to IMS
Must accommodate legacy networks/services
Must start with the core replacement;- integrating IMS components into NGN
![Page 16: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/16.jpg)
UTL IMS Transition Roadmap - Structure
From 2005
Since 2006
From 2013
Before 2005
From 2015
![Page 17: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/17.jpg)
The Move to IMS – Challenges Legacy network / services - need
replacement/accommodation
High Investment Capital- Financiers have to come in
Limited knowledge about IMS – Roadmap not yet clear
Low levels of skills – training in new technologies: support from developers, vendors, regulators, others is key
Fast technology changes-Operators unable to churn networks at a matching rate
Market not yet ready-only a small portion of the market may be ready for the changes
Initial costs of integrated terminals is normally high
![Page 18: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/18.jpg)
IMT
Anywhere, Anytime
Wireless(Terminal mobility) Global Roaming
Personal Mobility, Service Portability Virtual Home Environments(VHE) Whatever Multimedia Services
(Speech + Internet) Services
Objectives
![Page 19: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/19.jpg)
IMT-Characteristics
• Worldwide usage,integration of satellite and terrestrial systems to provide global coverage;
• Used for all radio environments,(LAN, cellular, satellite);
• Wide range of telecommunications services,(voice, data, multimedia, internet);
![Page 20: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/20.jpg)
• Support both packet-switched (PS) and circuit-switched (CS) data transmission;
• Offer high data rates up to 2 Mbps, 144 kbps for high mobility, 384 kbps with restricted mobility and, 2 Mbps in an indoor office
environment;
• Offer high spectrum efficiency;
IMT-Characteristics (cont.)
![Page 21: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/21.jpg)
IMT-Family Members• For the terrestrial mobile network, there are six family
members identified as being IMT-2000 compatible: IMT Direct Spread (IMT-DS; also known as
UMTS/UTRA-FDD);
IMT Time Code (IMT-TC; also known as UMTS/UTRA-TDD.
IMT Multicarrier (IMT-MC; also known as CDMA2000);
IMT Single Carrier (IMT-SC; also known as EDGE);
IMT OFDMA TDD WMAN (also known as mobile WiMAX)
![Page 22: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/22.jpg)
IMT-Indoor Coverage Solution
• Repeaters
• Dual Mode WiFi
• Femtocells
![Page 23: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/23.jpg)
Concept of Femtocell
• Indoor cellular coverage
• Can “talk” with any device
• Low cost backhauling
![Page 24: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/24.jpg)
Features of Femtocell
• Operates in the licensed spectrum
• Uses fixed broadband connection for backhaul
• Lower cost
• Smaller coverage
• Smaller number of subscriber
• Higher density
![Page 25: ITU Conference-Study Group 13 Kampala – Uganda 2-4 April 2012](https://reader033.vdocuments.mx/reader033/viewer/2022061506/568159df550346895dc72c0e/html5/thumbnails/25.jpg)
The clock will not turn back
= Thank You =