Randomized distributed shortest paths algorithms
STOC '89 Proceedings of the twenty-first annual ACM symposium on Theory of computing
MACAW: a media access protocol for wireless LAN's
SIGCOMM '94 Proceedings of the conference on Communications architectures, protocols and applications
Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
System architecture directions for networked sensors
ASPLOS IX Proceedings of the ninth international conference on Architectural support for programming languages and operating systems
A transmission control scheme for media access in sensor networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Computer Networks
Taming the underlying challenges of reliable multihop routing in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
An adaptive energy-efficient MAC protocol for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Energy-efficient collision-free medium access control for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Habitat monitoring with sensor networks
Communications of the ACM - Wireless sensor networks
The flooding time synchronization protocol
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Versatile low power media access for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Understanding the real-world performance of carrier sense
Proceedings of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis
Proceedings of the 3rd international conference on Embedded networked sensor systems
A unifying link abstraction for wireless sensor networks
Proceedings of the 3rd international conference on Embedded networked sensor systems
Z-MAC: a hybrid MAC for wireless sensor networks
Proceedings of the 3rd international conference on Embedded networked sensor systems
PPR: partial packet recovery for wireless networks
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
ACM Transactions on Sensor Networks (TOSN)
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In a wireless network using CSMA for MAC, packet collisions can result either because of the vulnerability stemming from the idle channel detection delay of the radio device or because of the hidden terminal problem. Both of these collision scenarios can be addressed by applying some additional structure to carrier sense-based channel access, sacrificing throughput to improve collision protection. Specifically, we assign a unique time slice to each contending transmitter that is designed to allow collision-free access to each data slot while still using carrier sense as the mechanism to determine channel state. The width of each time slice is equal to the idle channel detection delay of the radio. We prepend a fixed-length time interval to each transmitted packet whose length is proportional to the idle channel detection delay of the radio device and the node density. We discuss this method of channel access including tradeoffs and requirements, and analyze the performance in comparison with existing MAC strategies.