Autonomous hybrid pull-push Context-aware community service dissemination technology to achieve high assurance
Khalid Mahmood Malik, Satoshi Niki, Xiaodong Lu, Kinji Mori · 2009
Community time-distance-oriented context-aware information environment (CTCIE) incorporates time-awareness and demand-oriented perspectives to revamp one-dimensional rudimentary location based services (LBS) into three dimensional community pervasive services (CPS). The proposed Autonomous Decentralized Community System (ADCS) framework enables provision of customized CPS to specific users in specific place at specific time. ADCS employs novel idea of ripple-based multi-target context-cognizant service discovery (RMCSD) technique to empower flexible means to sophisticated selection of right service to right user at right place in transparent way, by utilizing context information of surrounding situations (traffic conditions, topographical features, service validity time etc). To further enhance timeliness, hybrid pull-push mechanism of RMCSD is extended to cache the service contents of the most relevant service. However, given multiple service providers, there exists tradeoff between accuracy of information and overall response time perceived by the users. The vigilant design of proposed autonomous community service area reconstruction technology (ACS-ART) procures high assurance: provision of right service with least access time. Simulation results verify the effectiveness of the proposed techniques.