Peer-to-Peer Service Sharing on Mobile Platforms

True ubiquitous computing requires peer-to-peer service sharing on mobile platforms, with application entities communicating and providing services to each other and to users. In order to enforce this paradigm to devices with limited processing and storage resources, lightweight middleware components are required. In this chapter, we define a theoretical model for autonomic and altruistic computational entities, and we use it to build a framework for peer-to-peer service-oriented infrastructures, focusing on three key aspects: overlay scheme, dynamic service composition and self-configuration of peers. Based on this framework, JXTA-SOAP Mobile Edition is a software component that completes the Sun MicroSystem's JXTA platform, supporting peer-to-peer sharing of Web Services.