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Wireless sensor networks (WSNs) have been widely used in industrial systems that demand a high degree of reliability and real-time performance in communications. However, because of limited network resources and delays caused by transmission conflicts and channel contention, many industrial applications cannot meet these demands. To resolve these issues, we introduce Narrow Band Internet of Things...
Nowadays, RFID systems have been widely deployed for applications such as supply chain management and inventory control. One of their most essential operations is to swiftly identify individual tags to distinguish their associated objects. Most existing solutions identify tags sequentially in the temporal dimension to avoid signal collisions, whose performance degrades significantly as the system...
Wireless Body Area Networks (WBANs) can provide continuous and remote monitoring of patients??? physiological history, facilitate automatic sports training, and promote interactive games. However, existing single-hop wireless communication scheme faces two major challenges: the impermeability of human body to radio waves at frequencies commonly used in WBANs, and the highly dynamic network topology...
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