Data Replication Preserving Semantic Relationship on a Single Wireless Channel

There have been various broadcast schemes based either on mobile users´ data access frequencies or on the semantic relations of data.In this paper, we present a data broadcast scheme based both on the semantic relationship and the access probabilities. The broadcast scheme we propose generates a broadcast sequence according to the semantic relationship and replicates popular data items several times according to the data access probabilities. We show our broadcast scheme is efficient through performance evaluations.