1. ITU-T SG13 futures session – July 25, 2003 - D1 Present document contains informations proprietary to France Telecom. Accepting this document means for its recipient he or she recognizes the confidential nature of its content and his or her engagement not to reproduce it, not to transmit it to a third party, not to reveal its content and not to use it for commercial purposes without previous FTR&D written consent. Mobility management issues in next generation networks Frédéric DELMONDFrance Telecom R&D

2. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D2 Global requirements to support nomadic users  An extensive range of access networks and terminals –xDSL, WLAN, 3G mobile, etc. in addition to narrow-band access –PCs, laptops, PDA, handsets, etc.  Nomadism should be supported across heterogeneous environments :  consistent service presentation and execution, whatever the access network point  enhanced services, aware of the current user environment (e.g. location, bit rate)  Global users in the network & in the services

3. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D3 Minimum requirements to support nomadic users  User identification + authentication  Identify the user separately from the access  User access control  Allowed / banned access  User location management  Retrieve where the user is located, over which access he’s connected

4. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D4 Additional requirements to support nomadic users  Enhanced services for nomadic users  Virtual Home Environment concept : – users should experience consistent service execution – services should be adapted to the current user situation in real-time WLAN access network xDSL  VHE enablers: – know more about the user environment – Access network + Terminal capabilities – know more about the user preferences – General user preferences – User configuration for the access service – Presence and availability management

5. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D5  Objective: to design generic, re-usable network functions  Technical issues:  1. How to provide a simple & secure interface to users ? –How to provide 'Single Sign On' to users across various access means (fixed and mobile) ? Which interactions to be defined with services & applications ? –Which authentication schemes ?  2. How to enable the operator to be a trusted 3d party ? – when the operator has performed identification & authentication  3. Access control: – how to access the user profile during access control in the network, when the user requests session setup ? Technical challenges for User Identification, Authenti- cation and Authorization in heterogeneous networks

6. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D6 Technical challenges for User data in heterogeneous networks  Data related to user environment (access + terminal)  Information needed for VHE and enhanced services  Technical issues:  1. Extract useful information from protocols in the signalling path – e.g. access identification, access type, terminal type, etc.  define the minimum information needed in these protocols and propose protocols evolutions when necessary  2. Provide a view of active access sessions in real-time  define interfaces to allow services and application to retrieve data of user access sessions – e.g. user location, max. bit rate available  be able to notify user IP connectivity = “network presence” – easier presence management at application level

7. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D7  User profile is composed of – “dynamic data” – values change as users move – e.g. user location, bitrate available, user presence, etc. – “static data” – values do not change as users move – e.g. service subscription, user preferences, etc  Technical issues:  How to retrieve any user data in a simple manner ?  Define a minimum user profile, which can be known by the network operator, applications and services ?  A consistent and global approach for user profile is needed Technical challenges for User profile in heterogeneous networks

8. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D8 Synergy with mobile networks ?  How to handle nomadism across fixed and mobile access ?  Example 1 : – develop Mobility Management (MM) functions for fixed access … … and mobile networks are used as a simple access means.  Users are handled by these MM functions whatever the access  Example 2 : –develop MM functions for fixed access … … users rely on mobile network MM when using a mobile access  Develop specific coordination between mobile and fixed network  In any case, the realization of VHE requires that – consistent interfaces with users and with services whatever the access, fixed or mobile

9. France Telecom R&D ITU-T SG13 futures session – July 25, 2003 - D9 Conclusions  Standardisation activities for mobility management in NGN  ensure a “global user” approach, independent of a specific access technology  define a reference architecture and network functions required to support nomadic users  define required interfaces for these functions in the control layer – with the terminals, with the application layer, with the transfer plane