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Context-Driven Information Adaptation Disclosure Number: IPCOM000004687D
Original Publication Date: 2001-Apr-06
Included in the Prior Art Database: 2001-Apr-06
Document File: 5 page(s) / 285K

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Ariel Pashtan: AUTHOR


Context-Driven Information Adaptation

This text was extracted from a WORD97 document.
This is the abbreviated version, containing approximately 47% of the total text.

Context-Driven Information Adaptation

Ariel Pashtan

Service Modes

It is anticipated that information services will have to adapt the content type sent to mobile users based on the dynamic changes of context that a mobile user goes through.

A service provider's information service sends requested data content to a mobile user. The data content is of a particular type, e.g., text, or video. Adaptation, in the present context, is the automatic selection of the right content type (audio, text, graphics, animation, or video, or some combination of these) depending on the user's current context. Adaptation is made to a specific service mode, i.e., the association of information with a particular content type.

The mobile user is characterized by a set of attributes that characterize his context. This set could include, for example:

User's preferences for receiving certain categories of information.

User's real-time location.

User's proximity to other users of a pre-defined group.

User's time constraints.

User's current transportation method (e.g., car, train, walking).

User's cost limits for received service.

User's mobile device characteristics (e.g., screen size, video capabilities).

The current service mode provided to the mobile user.

Each service description includes an associated list of service context attributes and is maintained by the network infrastructure. These service context attributes could include, for example:

Categories of provided information.

Geographic location (e.g., a store in a shopping mall, or a neighborhood) where this service is applicable.

Does this service require the interaction of co-located users (e.g., if it's a game played in a park site)?

How much time does the user require to listen to or view the information provided by this service (e.g., the information could be a short audio, or an expanded text description)?

Is this information service useful to a user driving in a car, to a user sitting in a train, or to a pedestrian?

Service cost (the service could, for example, be categorized as expensive, moderate, or free).

Which device types can benefit from this service (e.g., this service may require a color screen of a minimum size)?

A determination of the right content type that should be sent to a mobile user can be done based on a comparison of the current 'user context attributes' with the 'service context attributes'. For example, if a user happens to be driving a car he may prefer to receive a voice message, however if he is using public transportation he may prefer that the information be sent to him in the form of a text message.

Network Architecture for Service Modes

A user's context is tracked both locally by the user's wireless device and by the network infrastructure. Local context tracking can occur by wearable sensors connec...