Adaptive GTS Allocation Scheme based on IEEE 802.15.4 for Underwater Acoustic Sensor Networks

Abstract

This paper proposes a new media access control (MAC) protocol, Preamble-MAC (P-MAC). P-MAC is adaptive and dynamic MAC protocol based on Virtual Distance Level (VDL), which is the estimated, accumulated information of channel status and variation obtained through periodically monitoring underwater environment information such as long, unknown propagation delays and low bandwidth for underwater acoustic sensor networks.