Evolutionary Trends towards Beyond 3G Mobile Networks

Transcription

1 Evolutionary Trends towards Beyond 3G Mobile Networks Cornel Pampu, Cornelia Kappler, Morten Schläger / SN MN PG NT MN 4 November 17th, 2006 The new company Nokia Siemens Networks is expected to start operations by January 1, 2007, subject to customary regulatory approvals, the completion of standard closing conditions, and the agreement of a number of detailed implementation steps. Copyright Siemens Networks GmbH Protection & Co. KG notice All / Copyright rights reserved. notice

2 Outline Evolution UMTS up to SAE Beyond SAE Flexible policy framework Dynamic configurability [Network Composition] Page 2 November 2006

3 Evolution of mobile networks: Increased Heterogeneity, Flexibility and Complexity Heterogeneity, Flexibility, Complexity Hard-coded; One Service Nomadic use; No alternatives Full mobility; Roaming; Some flexibility through STK; more services Increasing complexity PS applications; CS backwardscompatibility; First alternative wireless interfaces (e.g. IEEE ); many operators; even more flexibility Large-scale wireless alternative (802.x); very large number of cells; Almost everything can be configured how to harmonize subscriber/operator? policies Network A Network B Network C Analog, Historical Network D Digitized GPRS/UMTS CS/PS LTE/SAE, VoIP, All-IP Page 3 November 2006

4 UMTS: Core Network Architecture (Rel6) PCRF GERAN UTRAN HSS Packet Core SGSN GGSN PDG CS Domain IMS, Internet GERAN, UTRAN Radio access networks HSS Subscriber data base SGSN Mobility, AAA, GGSN, PDG Gateways PCRF policies for AAA IMS - Services I-WLAN Current drivers for evolving UMTS Support higher bit rates Support of multiple (incl non-3gpp) access networks Inter-access mobility Access-independent authentication framework High quality network services Long Term Evolution (LTE) and System Architecture Evolution (SAE) Page 4 November 2006

5 SAE: Core Network Architecture GERAN Gb UTRAN Evolved RAN S1 GERAN, UTRAN, evolved RAN Radio access networks HSS Subscriber data base SGSN, MME intra-3gpp Mobility, AAA, SAE Anchor inter-system Mobility PCRF policies for AAA IMS - Services Iu SGSN S3 MME UPE S5a Packet Core S4 3GPP Anchor * Color coding: red indicates n ew functional element / interface Page 5 November 2006 Scenarios and architecture are currently under investigation in 3GPP S5b IASA Evolved Packet Core S2a Trusted non 3GPP IP Access SAE Anchor S2b S7 epdg S6 HSS SGi e-i-wlan PCRF Rx+ Op. IP Serv. (IMS, PSS, etc )

6 Beyond SAE Core Network Architecture SAE solves heterogeneity Presumably in a static fashion Deal with heterogeneity, flexibility while maintaining high-quality network services Seamless mobility QoS Security Charging Flexible policy framework Policy-based mobility management Policy-based flow management Policy-based charging Dynamic configurability [Network Composition] Charging self-configuration Nomadic IWLAN Page 6 November 2006

7 Policy-based Mobility Management MN Handover decision today based on Signal reception quality, resource availability Hard coded In heterogeneous environment handover decision based on Signal reception quality Velocity Pricing User preferences Operator preferences Policy-based mobility management Flexible Shields complexity from user Page 7 November 2006

8 Policy Based Mobility Management Layers & Mobility Subscriber Operator Dynamic Input ( triggers ) Static Input Policies Decision Engine Semi-dynamic (low change rate) Decisions Contract Data, Service Descriptions, Page 8 November 2006

9 Policy-based flow management / Dynamic Flow Management (DFM) SA1 discusses how users access a PLMN from their PANs using multiple network connections through other access systems Specific PNEs (i.e. MEs) within a PAN have their own network connections. User may want to receive the video service through a more suitable PNE and AS. User selects best access and re-directs traffic using DFM. User has to authorize the redirection via DFM Agent@ PNM. 3GPP TS V8.1.0 ( ), section A.3 Page 9 November 2006 Access System Video Service PLMN (e.g. CS. PS) PAN Access System UE PNM ME ME ME DFM Agent USIM New User Data User Data Control Data DFM Client PNM.Personal Network Management PNE. Personal Network Copyright Entity Siemens Networks GmbH & Co. KG 2006.

10 Policy-based charging 3GPP network Generic off-line Charging Architeccture in Rel.6 CN Domain CTF ChargingTriggerFunction CDF Charging Data Function Service element Subsystem C T F C C R f D G a G B x F F Billing Domain CGF Charging Gateway Function (TS ) Charging data collection in CTF today hard coded Flow-based charging allows policy-defined selection of flows More flexibility by allowing policy-based reconfiguration of CTFs Support new tariff models Load balancing Page 10 November 2006

11 Dynamic Configurability Charging self-configuration changed product offers Charging System Creates charging rules based on new capabilities or new tariff model register capabilities (chargable events) adapted configurations New ngctf health signals performance data ngctf ngctf finds charging system Page 11 November 2006 ngctf ngctf next generationcharging Trigger Function

12 Network Composition Network interworking today hard-coded IWLAN Roaming Agreements Dynamic, uniform procedure to achieve network interworking: Network Composition EU Project Ambient Networks Uniform procedure independent of network type and technology Dynamic procedure minimize human intervention Feasibility studied in 3GPP SA1 Study Item Network Composition TR Page 12 November 2006

13 Composition of a nomadic IWLAN Starting Point Internet 3GPP Services (e.g. IMS) UE USIM HSS/ HLR UE USIM WLAN Access Router IWLAN Secure bearer PDG AAA Server 3GPP Core Network Static interworking of a WLAN Access Network and a 3GPP network standardized in TS ( IWLAN ) Allows UEs to access the IWLAN / Internet / 3GPP Services on basis of USIM Authentication, Authorization and charging handled by 3GPP Network Interworking is manually configured Interworking is static: IWLAN expected to be immobile Composition enables making the scenario dynamic Page 13 November 2006

14 Composition of a nomadic IWLAN Business Case & Scenario Internet 3GPP Services (e.g. IMS) UE USIM HSS/ HLR UE USIM WLAN Access Router IWLAN WLAN USIM Secure bearer PDG AAA Server 3GPP Core Network Business Case: Provisioning of IWLAN Services at mass events IWLAN Provider move their equipment to Olympic Games, rock concerts, Scenario description On the site of the mass event, IWLAN uses e.g. DSL to connect to 3GPP network IWLAN and 3GPP network authenticate each other based on pre-shared secret E.g. 3GPP operator sells off-the-shelve nomadic IWLAN packet including a WLAN USIM to be inserted into the IWLAN Access Router IWLAN and 3GPP network establish a secure bearer Page 14 November 2006

15 Composition of a nomadic IWLAN Scenario Extension subscription 3GPP Core Network A UE A UE B WLAN Access Router I-WLAN composition composition subscription 3GPP Core Network B Nomadic IWLAN offers ist services to subscribers of several 3GPP networks No pre-established trust between IWLAN and 3GPP network E.g. trusted third party Page 15 November 2006

16 Summary and Outlook Evolution of mobile networks: Increased Heterogeneity, Flexibility and Complexity SAE statically integrates heterogeneous access networks What could come after SAE Flexible policy framework Policy-based mobility management Policy-based flow management Policy-based charging Dynamic configurability [Network Composition] Charging self-configuration Nomadic IWLAN Page 16 November 2006

17 Thank you for your attention! The new company Nokia Siemens Networks is expected to start operations by January 1, 2007, subject to customary regulatory approvals, the completion of standard closing conditions, and the agreement of a number of detailed implementation steps. For internal use only / All rights. Page 17 November August Group / Region / Department