Adaptive content networking

Content adaptation is an essential concept to meet the heterogeneous requirements of clients in Pervasive Computing environments. However, content adaptation interferes with replication applied in content networks to improve the performance of information access. Leveraging the advantages of replication in the world of Pervasive Computing is the subject of this paper.We introduce the notion of Cost-Quality Optimized Content Networking and formalize the inherent optimization problem. Additionally, web-caching and Content Distribution Networks (CDN) are compared with respect to their potential to accommodate cost-quality optimized content adaptation showing web-caching to be inappropriate due to intolerable response delays. The feasibility in the CDN scenario is illustrated by outlining a CDN system architecture.

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