1 / 9

Communication within AmI

Communication within AmI. Communication as a ubiquitous activity. The Three Scenarios: Instant Messaging Integrated Traffic Information The Museum Visit Communication is a basic activity in all scenarios.

malik-petersen
Download Presentation

Communication within AmI

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Communication within AmI

  2. Communication as a ubiquitous activity • The Three Scenarios: • Instant Messaging • Integrated Traffic Information • The Museum Visit • Communication is a basic activity in all scenarios. • The characteristics of communication are subject to usage requirements and the context of deployment • Goal: A communication service supporting context-driven adaptation and integration with other services

  3. Communication as a ubiquitous activity • Communication Service: Properties • Message format: plain text – image – audio – video • Traffic Information: video output or text input not likely • Museum Visit: covers all multimedia aspects • Communication partners: users – devices • Instant Messaging: Friends talking to each other • Museum Visit: Automatic registration in the entrance hall • Employing different kinds of (wireless) transport media • Range • Bandwidth

  4. Communication as a ubiquitous activity • Communication Service: Properties • Uni- or bi-directional communication • Museum Visit: nowadays mostly one-way communication • Instant Messaging: real interaction • Resource requirements and current availability • Memory – processing power – bandwidth • Changes may trigger service adaptation • I/O requirements • Traffic Information: speech output is preferable • Discovery: Interoperability with other services • Traffic Information: interaction with a text-to-speech service • Instant Messaging: video streaming using a GPRS service

  5. Communication as a ubiquitous activity

  6. Communication as a ubiquitous activity • Communication Service: Example • Type of communication depends on the available bandwidth • Broadband connection is shared • Message events from the Internet Gateway Service notify all clients about a change in bandwidth • Components: • Audio Encoder and Decoder: Adaptable components for (de)compressing the audio stream (high, medium or low quality) • Video Filter: Optional component for reducing the video frame rate or resizing. • Video Encoder and Decoder: Adaptable components for (de)compressing the video stream (high, medium or low quality). • Controller: (de)multiplexes text, speech and video, and sends/receives the combined data stream.

  7. Communication as a ubiquitous activity • Communication Service: Adaptation • When? • @ Deployment time • @ Runtime • How? • Use a component-based development methodology • (Near)-optimal distributed deployment of all components • Adapt functionality: enable – disable – replace components • Relocate components • Using transparent proxies • (Strong) code mobility • Why? • Provide optimal quality of service

  8. Communication as a ubiquitous activity • Collaboration with other partners: • Who? • VUB/SSEL: Code generation of components • VUB/PROG: Proof of concept interoperability for code mobility • UGent: Performance analysis of components • LUC: User interface generation as front end for services • How? • Draco: Common component-based middleware in Java • Support for • Resource management and contract checking • Live-updates • Distributed-deployment of components

  9. Communication as a ubiquitous activity

More Related