Floor acquisition multiple access (FAMA) for packet-radio networks
SIGCOMM '95 Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
Energy-efficient collision-free medium access control for wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
On the relationship between capacity and distance in an underwater acoustic communication channel
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
A MAC protocol for ad-hoc underwater acoustic sensor networks
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
Proceedings of the third ACM international workshop on Underwater Networks
Medium access control for underwater acoustic sensor networks with MIMO links
Proceedings of the 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Overview of networking protocols for underwater wireless communications
IEEE Communications Magazine
Proceedings of the Fifth ACM International Workshop on UnderWater Networks
IEEE/ACM Transactions on Networking (TON)
Protocol design issues in underwater acoustic networks
Computer Communications
The elimination of spatial-temporal uncertainty in underwater sensor networks
IEEE/ACM Transactions on Networking (TON)
Proceedings of the Eighth ACM International Conference on Underwater Networks and Systems
Performance validation of MAC protocols in underwater acoustic networks
Proceedings of the Eighth ACM International Conference on Underwater Networks and Systems
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Underwater networks allow investigation of many areas of the world not easily accessed by humans, but offer interesting challenges to device and protocol designers due to the unique channel conditions present when using acoustic communications. The high transmit power of acoustic transceivers makes the medium access protocol a primary focus point for reducing energy consumption in energy limited underwater devices. Scheduled protocols use very little power by eliminating collisions, but cannot adapt to changing traffic conditions in the same way as random protocols. We attempt to bridge these two ideas by dividing time into scheduled and unscheduled access periods in order to yield the benefits of each protocol. We show that this technique increases the bits delivered per energy unit in many cases of interest. Additionally, the hybrid technique provides low latency for a wider range of traffic rates than either of the two protocols when considered individually. We also investigate some of the design tradeoffs to consider when using a hybrid protocol.