An adaptive energy-efficient MAC protocol for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Medium access control with coordinated adaptive sleeping for wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Achieving Real-Time Target Tracking UsingWireless Sensor Networks
RTAS '06 Proceedings of the 12th IEEE Real-Time and Embedded Technology and Applications Symposium
Ultra-low duty cycle MAC with scheduled channel polling
Proceedings of the 4th international conference on Embedded networked sensor systems
An energy-efficient MAC protocol for delay-sensitive wireless sensor networks
EUC'06 Proceedings of the 2006 international conference on Emerging Directions in Embedded and Ubiquitous Computing
Computer Networks: The International Journal of Computer and Telecommunications Networking
Wireless Personal Communications: An International Journal
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This paper proposes a Path-oriented Real-time Medium Access Control (PR-MAC) protocol for sensor networks to guarantee the bounded delay of data transmission. PR-MAC removes sleep delay with a Bidirectional Pipelining Schedule (BPS) algorithm, and reduces communication delay caused by contention with a multi-channel communication mechanism. BPS enables a node to wake twice during a work cycle so as to support bidirectional data transmission. In either direction, the nodes along a path wake up sequentially. The multi-channel mechanism allocates a special channel for each communication path so that multiple simultaneous events will not interfere with one another. The data delay and energy consumption of PR-MAC is compared with those of S-MAC and DMAC. We implement the prototype of PR-MAC on the ns-2 simulator. Experiments showed PR-MAC performs better than S-MAC in reducing the transmission delay of both data and control message.