Design and Implementation of a Mobile Broadcast System

In a mobile environment, data broadcast paradigm has been recognised as an effective and scalable mechanism to disseminate frequently requested information to a large number of mobile users. This paper presents the design and implementation of a power preserving mobile broadcast system. The broadcast system is designed to serve transitive queries or queries that access related data items belonging to different tables in the relational databases. The focus of this paper is revolved around the implementation of three specific data broadcast schemes, namely: (i) a filtering technique for mobile device to perform transitive queries and display the desired data from incoming multiple entity types broadcast data items, (ii) the index broadcast scheme to predict the arrival of the desired data so that power utilization can be minimized, and (iii) multiple channel environments to allow mobile device to tune into multiple broadcast channels to receive the desired data. We showcase the efficacy of these data broadcast schemes through the development of the prototype system with a share indices price application.