The EU IST Project BRAIN/MIND
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1 The EU IST Project BRAIN/MIND An IP solution for systems beyond 3G Dave Wisely BTexact Technologies MIND Technical Manager ITU Seminar on IMT-2000 and systems beyond Ottawa, 28 th May 2002 Page 1
2 Introduction - Recent Developments Dominance of IP applications Voice over IP is becoming common IP is the transport technology for UMTS Releases 4 and 5 Growth of new access technologies Wireless LANs Public and corporate offerings in 2002 in the UK ADSL people become used to fast Internet/Intranet access New User-driven prospective Requirement for personal mobility Ad-hoc networks outside the control of operators More complicated business models IP clearly separates networks and services Page 2
3 Billing AAA SIP Proxy Server BRAIN/MIND: Vision Vertical Handover AAL2 Switching Cloud UMTS IGSN IP backbone DiffServ IP - macro mobility management Gateway SP Server Farm Global Internet Bluetooth IP-based micro-mobility ISSL QoS BRAIN Access Routers ADSL Hiperlan/ MIND Wireless Routers MIND Mobile Routers Hiperlan Page 3
4 BRAIN/MIND Objectives To enable broadband mobile multimedia applications Providing adaptation to changing QoS Enabling flexible and dynamic service provision To design an IP-based mobile access network With IP mobility, QoS and security functionality Including wireless/mobile ad-hoc extensions To define the requirements of a broadband air interface Interface to IP access network Spectrum requirements for systems beyond 3G To validate our fundamental design principles To trial the use of WLANs and IP access networks as a complement to UMTS To contribute to global standardization Page 4
5 MIND Project Structure RTD project of the IST Programme of the EU Duration: Jun 01 - Nov 02 Website: Page 5
6 BRAIN End Terminal Architecture (BRENTA) Extended Socket Interface IP2W Interface Application Layer Session Layer Transport Layer IP Layer Link Layer Type A Type B Type C Type D Session Layer Protocols (SIP, H323, RSVP..) QoS and Mobility Support BRAIN Component Level API Transport Layer IP Layer with QoS and Mobility Support Link Layer with QoS MAC PHY BRAIN QoS BROKER GUI BRAIN High-level API Page 6
7 Internet Typical Scenario Shortrange high performance link Shortrange high performance link Page 7 Longrange (UMTS, GPRS, etc.) Shortrange high performance link Shortrange high performance link Longrange (UMTS, GPRS, etc.) MMR / Multihoming device Mobile User Player Simple device: no multihoming and only shortrange Player Longrange (UMTS, GPRS, etc.) Game Server Multihoming devices: shortrange and longrange Mobile Communication Network Player This link is splitting apart when the two cars are no longer in proximity Player Shortrange high performance link
8 IP Design Principles (an all-ip network) Network Transparency The End to End Principle as applied to Mobile Wireless Networks Network simply delivers packets (unopened) Enable & encourage future evolution Means component independence obey the layer model Keep efficiency without tight integration (3G) Solve only the special problems of Mobile Wireless Access Leave the fixed network to the IETF, and contribute mobile wireless parts there B 'Stupid looking' network Connectionless QoSassured IPv4/v6 packet delivery BMG Page 8 IP Core Hosts using standard IP protocols IP packets sent to and received from terminal, unchanged by network
9 MIND Network Architecture UTRAN IP Network ACCESS NETWORK Vertical Handover Access Routers Mobility Gateway ACCESS NETWORK QoS Mobility Management Control Access Network Wireless Routers MIND Mobile Routers Horizontal Handover Mobile Node Page 9
10 Mobility Management Major Functions Mobility Requirements Minimise mobility signalling traffic Provide seamless handovers (Min. delay and without loss of packets) Be scalable Be robust, i.e. supports multiple routes or rapid re-routing routing Is compatible with other Internet protocols Path Updates Handover Framework Paging Mobile Node to Access Router Protocol Page 10
11 BRAIN Candidate Mobility Management Protocol MG MG MG MG MG MG ANP ANP ANP ANP ANP ANP ANP ANP ANP MH MH MH Access Routers (s) are located at the access network edge and offer IP connectivity, default router to the Mobile Hosts (MHs) that they serve Anchor Points (ANPs) are located inside the access network, own & allocate addresses, authenticate users, maintain user records, tunnel packets to Access Routers Mobility Gateways(MG MGs) standard border routers (no mobility specific functionalities), distributing traffic to correct ANPs. Page 11
12 The MIND IP to Wireless (IP2W) Interface IP 2 W Control Interface IP 2 W Data Interface Wireless Link Control Functions Basic Data Transport Function IP2W compatible wireless link layer Configuration Management Address Management QoS Control Error Control Buffer Management QoS Support Handover Control Idle Mode Support Security Management Segmentation Re-assembly Header Compression Multicast Support IP 2 W is applicable to different link layer technologies Makes the most efficient use of any functionality available below layer 3 QoS support must be provided below layer 3 on the wireless link Page 12
13 IP IP2W Interface CL Control SAP Convergence Layer (CL) Service Specific Convergence Sublayer (SSCS) Common Part (CP) DLC Control SAP Data Link Control (DLC) layer HIPERLAN/2 IP Convergence Layer Enhancement to support IP2W Interface Transparent to control messages Control Plane Control Plane Control Plane User Plane User Plane User Plane Common Part Convergence Sublayer (CPCS) Segmentation And Reassembly (S) CL User SAP DLC User SAP H/2 Convergence Layer(s) ATM 1394 Ethernet IP 3G Interworking Cell based Packet based Detailed IP SSCS specification completed IPv4 & IPv6 support IntServ, Diffserv Detailed Address resolution schemes IP2W interface support QoS mapping & scheduling detailed network handover Paging (complies IETF drafts) Unicast, Anycast, Multicasting Page 13
14 Packet Error rate HIPERLAN/2 Physical layer Enhancments ETSI Channel C; burst length = ms; BPSK 1/2 3 km/h 20 km/h 30 km/h 40 km/h C / N [db] Enhancements Range Efficiency Mobility support (speed) Ad-hoc support Typical strategies Multiple antennas Turbo coding Adaptive modulation Mac layer enhancements QoS support Multipoint - multipoint Page 14
15 MIND Trials Application QoS control WLAN - UMTS Handover Comparison of coupling techniques Measurement of performance Mobility and QoS protocol comparison and test BCMP vs HMIP QoS framework and extensions Evaluation of the H2 physical layer Evaluation of BRAIN enhancements Integration Roaming and macro-mobility Application, QoS and mobility interaction Page 15
16 MIND IP layer QoS testbed MG Correspondent Node Hub Router BAN Core network DS enabled At least one layer of routers MG MIND QoS Test-bed Wireless Hops DiffServ Access network RSVP signalling Admission control at Access Nodes Interactions with mobility Mobile IP v6 BCMP Possible extensions QoS Broker Bounded delay DiffServ ACCESS ROUTER ACCESS ROUTER Mobile Terminal with video and sound capabilities Page 16
17 Summary - MIND continues to solve the Beyond 3G jigsaw! Business models All-IP radio access network Broadband radio access ad-hoc Scenarios WLAN UMTS handover QoS Mobility Spectrum Requirements Page 17
18 Acknowledgements This work has been performed in the framework of the IST project IST MIND, which is partly funded by the European Union. The authors would like to acknowledge the contributions of their colleagues from Siemens AG, British Telecommunications PLC, Agora Systems S.A., Ericsson Radio Systems AB, France Télécom S.A., King's College London, Nokia Corporation, NTT DoCoMo Inc, Sony International (Europe) GmbH, T- Systems Nova GmbH, University of Madrid, and Infineon Technologies AG. Page 18
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