Status of Implementation of IMSIMT The UTL Perspective

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Status of Implementation of IMS/IMT The UTL Perspective ITU Conference-Study Group 13 Kampala –

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 Ocira Oyaro Radio Network Planning Engineer Uganda

Presenters Richard Adongu Core Network Planning Engineer Ocira Oyaro Radio Network Planning Engineer Uganda Telecom MIT, B Sc. (Phy/Math), PGD C. SC. (MUK) CDM (CMI, UK) E-mail: richard. adongu@utl. co. ug B Sc. Phy/Math (MUK) Certifications: Radio Access Technologies E-mail: david. ocira@utl. co. ug

Abstract The global world is moving to convergence in all fields; economy, political and

Abstract The 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.

Outline Ø IMS – The Concept /Overview Ø UTL - Existing Network Ø Why

Outline Ø IMS – The Concept /Overview Ø UTL - Existing Network Ø Why the Move to IMS? Ø The Challenges Ø IMT

IMS : Overview IP Multimedia Subsystem (IMS) Conceptually analogues to Biblical(John 14: " My

IMS : Overview IP Multimedia Subsystem (IMS) Conceptually analogues to Biblical(John 14: " My Father’s House, has many rooms. . ”)- all can be accommodated, is; ØMost Unifying/Seamless technology or platform: - wire line, cable, internet, wireless all together ØA requirement for transiting to a fully converged, open and distributed architecture ØFrom high demand for integration for delivery of IP multimedia services using integrated devices (smartphones, etc. )

IMS - Layers and Protocols ØProtocols: All NGN (SIP, H 323, H 248, MGCP,

IMS - Layers and Protocols ØProtocols: All NGN (SIP, H 323, H 248, MGCP, SIGTRAN), Diameter, Legacy-SS 7, R 2, V 5. 2. ØLayers: Three (3) - Application, Control and User Ø Application: 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 Ø 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 servers Ø User/Access: Provides access from User Equipment (UE) over mobile, Wi. Fi 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.

IMS - Core Architecture/Layers

IMS - Core Architecture/Layers

IMS - Core Functions Ø Runs all NGN Core functions ØCall control ØMedia Gateway

IMS - Core Functions Ø Runs all NGN Core functions ØCall control ØMedia Gateway Access Control ØResource Allocation ØProtocol Processing ØRouting ØAuthentication ØCharging ØApplication Programming Interfaces (API) ØWeb based and presence services

IMS - Services ØAll NGN and Legacy Services ØVoice - Basic, Supplementary (Wake up,

IMS - Services ØAll NGN and Legacy Services ØVoice - Basic, Supplementary (Wake up, Call waiting, CLI), Øx. DSL, ISDN ØIP Fax ØIP Centrex, ØIVR ØMultimedia Services: - Video, instant messaging, program sharing, electronic white board, video conferencing/streaming ØIN Services: - card calling, advanced prepaid calling, VPN, Number Portability, ØUnified/Smart Services: - unified messaging, colour dial tone, instant messaging. ØBusiness Services - SIP Trunking, SIP Centrex ØResidential Services- Voice and video telephony ØIP Voice and IP Video mail ØVoice and Video conferencing

UTL – Current Network Status Ø PSTN/TDM/Legacy Voice and Data Nodes Ø TDM switches,

UTL – Current Network Status Ø PSTN/TDM/Legacy Voice and Data Nodes Ø TDM switches, Leased line data nodes, ADSL DSLAMs, ADMs, SGSN/GGSN, Ø NGN Nodes Ø NGN structure is four layered: - Application, Network Control, Core Switching, Edge Access Ø Nodes: Soft Switches (Soft 3000 & MSoft 3000), MSANs, Media Gateways, IADs, Media Gateway Controllers, Application Servers, IN, Media Resource Servers, Signalling Gateways, SHLR/VLR.

Architecture of UTL Existing Network

Architecture of UTL Existing Network

UTL- Current Services Offered Ø POTs, ISDN, x. DSL, V. 5. 2, leased line

UTL- Current Services Offered Ø POTs, ISDN, x. DSL, V. 5. 2, leased line Ø GSM, GRPS, 3 G, Wi. MAX Ø Hosted PBX Ø IP Centrex Ø Tele-conference calling Ø Video Conferencing Ø VPNs Ø Soft phone Services Ø Unified Messaging Platforms Ø Colorful Ring-back Tone Ø Alarm Call Ø Sequential Ring Ø Number Portability Ø 3 rd Party Customized Services All these will be offered by IMS

Why the Move to IMS? Drivers include the need to: - Ø Move from

Why the Move to IMS? Drivers include the need to: - Ø Move from Legacy TDM and NGN to integrate networks/services – Service integration Ø Meet customer unified service expectations Ø Innovate new applications/service offeringsmultimedia services/unified communication Ø Reduce CAPEX & OPEX-one network, many services Ø Follow fast paced technological trends

UTL - IMS Network Structure

UTL - IMS Network Structure

UTL IMS – The Transition Model Ø Vendors and operators are at an IMS

UTL IMS – The Transition Model Ø Vendors and operators are at an IMS war : Each, is saying; the Other is not ready; Ø Despite absence of 100% Universal IMS standard, the transition: Ø Has to be gradual/evolutionary: moving from TDM to NGN to IMS Ø Must accommodate legacy networks/services Ø Must start with the core replacement; integrating IMS components into NGN

UTL IMS Transition Roadmap - Structure Before 2005 From 2005 Since 2006 From 2013

UTL IMS Transition Roadmap - Structure Before 2005 From 2005 Since 2006 From 2013 From 2015

The Move to IMS – Challenges Ø Legacy network / services - need replacement/accommodation

The Move to IMS – Challenges Ø Legacy network / services - need replacement/accommodation Ø High Investment Capital- Financiers have to come in Ø Limited knowledge about IMS – Roadmap not yet clear Ø Low levels of skills – training in new technologies: support from developers, vendors, regulators, others is key Ø Fast technology changes-Operators unable to churn networks at a matching rate Ø Market not yet ready-only a small portion of the market may be ready for the changes Ø Initial costs of integrated terminals is normally high

IMT Objectives l Anywhere, Anytime Wireless(Terminal mobility) Global Roaming Personal Mobility, Service Portability Virtual

IMT Objectives l Anywhere, Anytime Wireless(Terminal mobility) Global Roaming Personal Mobility, Service Portability Virtual Home Environments(VHE) l Whatever Multimedia Services �(Speech + Internet) Services

IMT-Characteristics • Worldwide usage, integration of satellite and terrestrial systems to provide global coverage;

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);

IMT-Characteristics (cont. ) • Support both packet-switched (PS) and circuitswitched (CS) data transmission; •

IMT-Characteristics (cont. ) • Support both packet-switched (PS) and circuitswitched (CS) data transmission; • Offer high data rates up to 2 Mbps, Ø 144 kbps for high mobility, Ø 384 kbps with restricted mobility and, Ø 2 Mbps in an indoor office environment; • Offer high spectrum efficiency;

IMT-Family Members • For the terrestrial mobile network, there are six family members identified

IMT-Family Members • For the terrestrial mobile network, there are six family members identified as being IMT-2000 compatible: Ø IMT Direct Spread (IMT-DS; also known as UMTS/UTRA-FDD); Ø IMT Time Code (IMT-TC; also known as UMTS/UTRA-TDD. Ø IMT Multicarrier (IMT-MC; also known as CDMA 2000); Ø IMT Single Carrier (IMT-SC; also known as EDGE); Ø IMT OFDMA TDD WMAN (also known as mobile Wi. MAX)

IMT-Indoor Coverage Solution • Repeaters • Dual Mode Wi. Fi • Femtocells

IMT-Indoor Coverage Solution • Repeaters • Dual Mode Wi. Fi • Femtocells

Concept of Femtocell • Indoor cellular coverage • Can “talk” with any device •

Concept of Femtocell • Indoor cellular coverage • Can “talk” with any device • Low cost backhauling

Features of Femtocell • Operates in the licensed spectrum • Uses fixed broadband connection

Features of Femtocell • Operates in the licensed spectrum • Uses fixed broadband connection for backhaul • Lower cost • Smaller coverage • Smaller number of subscriber • Higher density

The clock will not turn back = Thank You =

The clock will not turn back = Thank You =