1. ICPS 2006 – Lyon, 26-28 June 2006 Slide 1 Personalizing Pervasive Services on Top of Heterogeneous Networks Yuping Yang Richard Everson University of Exeter, UK Rick Dewar M. Howard Williams Heriot-Watt Universtiy, UK

2. ICPS 2006 – Lyon, 26-28 June 2006 Slide 2 Personalizing Pervasive Services on Top of Heterogeneous Networks Background (1)   Daidalos - Designing Advanced network Interfaces for the Delivery and Administration of Location independent, Optimised personal Services - The Sixth Framework IST Integrated Project: 49 partners from 16 countries - Long-term goal: create the support for mobility needed by users - Focus: Broadcast and multicast capabilities; The development of services and applications based on pervasive computing, intelligent context- awareness and extended personalization.

3. ICPS 2006 – Lyon, 26-28 June 2006 Slide 3 Personalizing Pervasive Services on Top of Heterogeneous Networks Background (2) The aim of Daidalos To provide a universal and open service platform that can offer pervasive services to application developers in such a way that the underlying network technology becomes fully transparent.

4. ICPS 2006 – Lyon, 26-28 June 2006 Slide 4 Personalizing Pervasive Services on Top of Heterogeneous Networks Daidalos Pervasive Service Platform (PSP)

5. ICPS 2006 – Lyon, 26-28 June 2006 Slide 5 Personalizing Pervasive Services on Top of Heterogeneous Networks Overview of Personalization

6. ICPS 2006 – Lyon, 26-28 June 2006 Slide 6 Personalizing Pervasive Services on Top of Heterogeneous Networks User Preferences in Daidalos   Non-logic-based preferences - Contextual information - Attribute/Value Pairs +   Rule-based preferences - Containing logic - Conforming to the RM specification Context Mgm Rule Mgm

7. ICPS 2006 – Lyon, 26-28 June 2006 Slide 7 Personalizing Pervasive Services on Top of Heterogeneous Networks Three Levels of User Preferences (1) Generic preferences Preferences for a certain service type Preferences for a specific service

8. ICPS 2006 – Lyon, 26-28 June 2006 Slide 8 Personalizing Pervasive Services on Top of Heterogeneous Networks Three Levels of User Preferences (2)   Generic rules E.g. E.g. If I am on a business trip, choose the service with the best QoS; otherwise, choose the one with the cheapest price.   Rules related to a type of service E.g. E.g. If it is a small screen, set the number of images to be shown simultaneously = 1 and display frequency = 2, and add the image of my family; otherwise, set the number of images = 2 and display frequency = 4, and remove the image of my family.   Service specific rules E.g. E.g. If I am in the UK, always choose the Vodaphone network for me whenever it is possible.

9. ICPS 2006 – Lyon, 26-28 June 2006 Slide 9 Personalizing Pervasive Services on Top of Heterogeneous Networks Multiple Identities and Roles

10. ICPS 2006 – Lyon, 26-28 June 2006 Slide 10 Personalizing Pervasive Services on Top of Heterogeneous Networks Personalization of QoS   The role of Personalization in determining user’s preferred QoS: - Before a session starts. - At some point in time after a session has started, the user context changes. -The user transfers a session from terminal A to terminal B. - A session is automatically transferred from terminal A to terminal B, based on context and rules. - The user requests explicitly to increase/decrease the current QoS to a certain degree.

11. ICPS 2006 – Lyon, 26-28 June 2006 Slide 11 Personalizing Pervasive Services on Top of Heterogeneous Networks Daidalos QoS Setting

12. ICPS 2006 – Lyon, 26-28 June 2006 Slide 12 Personalizing Pervasive Services on Top of Heterogeneous Networks Implementation of Dynamic QoS Configuration

13. ICPS 2006 – Lyon, 26-28 June 2006 Slide 13 Personalizing Pervasive Services on Top of Heterogeneous Networks Personalization Support to Network Layer (1)   Personalization determines user preferences/rules on networks and stores a copy of them in the underlying layer via the Intelligent Interface Selection (IIS).   This copy will be updated by Personalization when the related user preferences are changed.   In the case that multiple networks are available, the IIS selects one according to the user preferences stored locally taking into account the price, QoS, provider, etc. of the network.

14. ICPS 2006 – Lyon, 26-28 June 2006 Slide 14 Personalizing Pervasive Services on Top of Heterogeneous Networks Personalization Support to Network Layer (2) Bytes in a UDP packet User Network Preference Information 4 bytes(0->3) The user preferences in decreasing order (t=technology, c=costs, p=provider, q=quality) 4 bytes(4->7) Preferred technologies in decreasing order (W=WLAN, D=DVB, U=UMTS, w=wiMax) 1 byte (8) Preferred network Provider

15. ICPS 2006 – Lyon, 26-28 June 2006 Slide 15 Personalizing Pervasive Services on Top of Heterogeneous Networks Current Status of Daidalos   The first implementation of the Daidalos PSP was completed in Dec. 2004. - Two scenarios, diabetes scenario and shared wall display scenario, were used to demonstrate the prototype.   A more complete and integrated system with advanced functions was evaluated in Nov. 2005. - A scenario showing a day in the life of business man Bart was used to demonstrate the system.   Future Work: In Daidalos Phase II (2006 ~ 2008), work on Personalization focuses on learning and adaptation of composition process.

16. ICPS 2006 – Lyon, 26-28 June 2006 Slide 16 Personalizing Pervasive Services on Top of Heterogeneous Networks Thank you. Any questions?