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Spatial air index for range queries in road networks

Wireless data broadcast is an efficient strategy for disseminating data to clients in road networks. In present work, cache management and Spatial Air Index (SAI) with Hybrid Broadcast (HB) scheduling has been adapted for range queries in road networks. Various experiments have been conducted for evaluating performance and compared SAI with state-of-the-art NPI. The experimental result shows that SAI outperforms.