Date Added: May 2011
This paper proposes mobile services with time constraints in ubiquitous computing environments based on on-demand multichannel broadcasting. For real-time mobile service, the need of mobile service for a real-time database management model is strong and providing real-time response to mobile transaction has became basic strategies in mobile data management. However, the resource constraints of ubiquitous computing systems make it difficult to satisfy timing requirements of supported strategies. This paper provides on-line scheduling strategies for mobile data with timing constraint on multichannel broadcasting environments based on on-demand mode.