UASN中改进的锚点定位报文传输方案.

Underwater acoustic sensor network has characteristics of long transmission delay, lower data rate, high transmission loss. These characteristics affect the transmission efficiency of the existing positioning algorithm. Aiming at the deficiency, this paper proposes an improved localization packets transmission scheme of the anchor. After knowing the relative positions of the anchors and their maximum transmission range,we firstly analyze the collision free packet transmission conditions, and then define the positioning task time minimization problem, and prove that the optimal solutions can be obtained. On this basis, we propose two low complexity algorithms based on scheduling. Finally, several simulation experiments are conducted to compare the performance of the improved algorithm with the current underwater MAC protocol OCSMA and the traditional time slot method. Experimental results show that the performance of the proposed algorithm is quasi-optimal, and it is better than other current algorithms such as TDMA and OCSMA. [ABSTRACT FROM AUTHOR]