A new approach to channel access scheduling for Ad Hoc networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Timing-sync protocol for 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
An adaptive TDMA slot assignment protocol in ad hoc sensor networks
Proceedings of the 2005 ACM symposium on Applied computing
A mobility-adaptive TDMA MAC for real-time data in wireless networks
NETWORKING'08 Proceedings of the 7th international IFIP-TC6 networking conference on AdHoc and sensor networks, wireless networks, next generation internet
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Because of its ability to provide the collision-free packet transmission regardless of the traffic load, TDMA has been applied effectively in ad hoc networks. Until now, assuming a stationary ad hoc network, a TDMA slot assignment protocol which achieves the high channel utilization has been proposed. In this paper, we extend the protocol to accomodate the dynamic topology change due to the movement of nodes. In our protocol, since each node autonomously detects a change in network topology and assigns a slot to itself, the high channel utilization in the previous protocol can be kept even when nodes in a network move. Furthermore, we verify the effectiveness of the protocol by simulation experiments. The results show that our protocol improves channel utilization in comparison to conventional protocols.