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Mobile Switching Systems Unit, L M Ericsson in Finland

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Presentation on theme: "Mobile Switching Systems Unit, L M Ericsson in Finland"— Presentation transcript:

1 Mobile Switching Systems Unit, L M Ericsson in Finland
Media Gateway Mika Ahola Mobile Switching Systems Unit, L M Ericsson in Finland

2 Outline Background New network architecture Media gateway
Standardization Summary

3 - a challenge, a possibility Fixed <> Mobile Technologies
Background The New Telecoms World - a global marketplace - a challenge, a possibility Liberalization Global customers IP & Internet Competition Price pressure Fixed <> Mobile Technologies

4 Wireless Internet Services
News, weather, sports Traffic information Directory services Time tables Location-dependant information services, like “find a nearby restaurant”

5 GSM/UMTS Network (Phase 1)
PSTN/ISDN Internet/ intranet GSM/UMTS core network GSM radio access UMTS radio access GSM GSM/UMTS UMTS This picture illustrates one cornerstone in the Ericsson UMTS strategy: The core network providing services for UMTS will be based on evolvement of the GSM core network with the addition and modification of services. One and the same core network will simultaneously serve both an evolved GSM access (including EDGE) as well as the new UMTS access. Dual mode mobiles are essential for a flexible introduction of UMTS. Handover and roaming between the GSM access and the UMTS access shall be supported. The most economic way for both operator and end-user in achieving mobile multimedia capabilities, for a range of bandwith, narrow and wide band, and type of services. Narrow band Wide band Access to people and information

6 UMTS/GSM Reference Model
User equipment GSM BSS Core network External network SCP SMS- GMSC SIM MT BTS BSC Um Abis SIM MT BTS BSC MSC GMSC A Gb EIR UTRAN Iu HLR AUC USIM ME BTS RNC Iu SGSN This is the total reference model used in ETSI for a combined GSM/UMTS network. It consist of three major parts A GSM radio network A UMTS radio network A GSM/UMTS core network The terminals MT and ME can be single or dual mode. Handover between the radiointerface will be standardized. Also see previous picture text Cu Uu Iub Iur GGSN USIM ME BTS RNC

7 UMTS Standardization Abis A Iu Iub Revolution Evolution Core network
GSM based evolution to UMTS -circuit switched evolution -packet switched (GPRS) evolution Abis A Iu Iub GSM BTS GSM BSC UMTS BTS UMTS RNC UMTS standardization will mean a new radionetwork is introduced called UTRA and based on WCDMA technology. New basestations and RNC (“BSC: s”), but infrastructure like shelters, towers, cooling and power can be reused. On the core network side standardization and products will be evolved from circuit to packet by GPRS and then both circuit and packet evolution when adding UMTS. Interfaces are shown. Revolution Evolution

8 Migration Roadmap Core network GPRS GGSN+ SGSN HSCSD MSC Radio network
Packet switched GGSN+ SGSN Bandwidth Circuit switched HSCSD MSC Radio network UTRAN WCDMA GSM has several steps on the roadmap the coming years. It is important to understand the nature of each step. Core network is the first part that will be evolved first with HSCSD –High Speed Circuit Switched Data, increased speed by multislot technology in the radio interface, which increases user bitrate on circuit switched data services. By introduction of GPRS the Core Network takes the step into the packet switched services. The radio interface is developed in two steps, first EDGE a new modulation scheme on existing GSM channel structure. Then a new radionetwork WCDMA/UTRA optimized for packet data transport. When looking upon these steps it is important to understand what they mean to me as an operator. They effect different parts of the network and depending on how I use them, they effect the business in different ways. EDGE Bandwidth GSM

9 ? Value Added Services Service enabling technology Infrastructure
Service Production Functionality IT based services Value Added Services SIM toolkit ? Service enabling technology WAP Applications SERVER VOICE MAIL IN GSN During the lifetime of mobile communications the way of producing services have changed. In the beginning of the 90´s we had a split between basic telecom services produced in the infrastructure (MSC: s) and supplementary/value added services. During the recent years the functionality of services has increased, going towards more and more IT based services. At the same time a new type of infrastructure has grown up in producing services, we call it Service Enabling Technology. Today we have a split between three domains instead of two. Infrastructure MSC BSS Time

10 Next-generation Network Structure
Today Single-service networks Future Multi-service networks/client-server Servers Services Content Content Communcation applications Control Backbone Network Cellular/PLMN PSTN/ISDN Data/IP Networks CATV Wireless Access Cable Access Wireline Access Access Transport & Switching Networks Clients/Applications

11 Connectivity backbone
Ericsson Network Architecture Appl Servers Application SCP SCS HLR Control MSC Server GSN Server Connectivity Internet Intranets MGW Connectivity backbone (STM, ATM, IP, …) Resource Node MGW MGW MGW PSTN/ISDN/ PLMN UTRAN Wireless AN UTRAN Wireline AN Media Gateway, handling User Plane Server, handling Control Plane & Applications

12 Features of New Architecture:
Separation of call control and connectivity/bearer control Flexible architecture that is possible to use for any connectivity (ATM, IP, STM) Keep the N-ISDN/GSM service paradigm. Use MAP, ISUP, etc. All devices needed for user plane manipulation are moved to the Media Gateway (echo cancellers, codecs, etc.) Possible to place infrequently used equipment in centralized resource nodes Transmission efficient to have coded speech all the way to the rim of the PLMN UTRAN and the Iu interface is ATM based. A good way to bring in ATM in the core network is needed Allows stable and mature introduction of UMTS networks since building on GSM products New protocol to control media gateway remotely Services/applications outside core network enables service convergence In line with standardization trends

13 Backbone Network MGW MGW MGW MGW AXD AXI 540 AXI 520 ATM ATM ATM ATM

14 Services/Applications Outside Core Network
Application n Open I/F Service Capability Servers PLMN Gen 2 UMTS PLMN Gen 3 PSTN/ ISDN Other members IMT-2000 Family

15 UMTS Standardization Bodies for New Architecture
ITU-T SG11 Control HLR MAP GMSC /Transit Server MSC Server BICC RANAP ITU-T SG16 N-ISUP GCP MEGACO GCP PSTN/ISDN PLMN Internet/ Intranet UTRAN Media GW Media GW BTS RNC Connectivity Backbone NW ATM, IP... Sigtran 3GPP R00 Architecture SS7 over IP

16 Reference Architecture for an All IP Network
Source: 3GPP TR V1.0.0 ( )

17 Summary Ericsson offers via the layered architecture an evolutionary approach to the multi-service network Ericsson offers deployment of ATM & IP-based transport technologies for both UMTS and GSM/GPRS based on open standards. A Media Gateway product is introduced handling all user plane data in an integrated way and that connects to ATM & IP backbones New network architecture will be included in release 00 of 3GPP

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