PDF(Pubmed)
Abstract：
In base-station-based underwater wireless acoustic networks (B-UWANs), effective handover mechanisms are necessary to ensure seamless data services for mobile nodes such as autonomous underwater vehicles (AUVs). Unlike terrestrial base stations (BSs), moored buoy BSs in B-UWANs experience motion responses due to wave loads under environmental conditions, posing unique challenges to the handover process. This study examines how BS motion affects handover decision errors, which arise when AUVs incorrectly initiate handovers to unintended BSs due to BS motion. By utilizing the AUV-BS distance as a handover triggering parameter, our analysis reveals a significant increase in decision errors within the overlapping regions when both the current and target BSs are in motion, especially when moving in the same direction. In addition, these errors intensify with the magnitude of BS motion and are exacerbated by smaller BS network radii. Based on these simulation results, we present an analytical framework that not only measures the influence of BS motion on the AUV-BS distance but also provides strategic insights for refining underwater handover protocols, thereby enhancing operational reliability and service continuity in B-UWANs.
摘要：
在基于基站的水下无线声学网络(B-UWAN)中,有效的切换机制是必要的,以确保诸如自主水下航行器(AUV)的移动节点的无缝数据服务。与地面基站(BS)不同，B-UWAN中的系泊浮标BS由于环境条件下的波浪载荷而经历运动响应，对移交过程构成独特的挑战。这项研究考察了BS运动如何影响切换决策错误，这在AUV由于BS运动而错误地发起到非预期BS的切换时出现。通过利用AUV-BS距离作为切换触发参数，我们的分析显示，当当前和目标BS都在运动时，重叠区域内的决策误差显着增加，尤其是在向同一方向移动时。此外,这些误差随着BS运动的幅度而加剧，并且由于较小的BS网络半径而加剧。基于这些模拟结果，我们提出了一个分析框架，不仅测量BS运动对AUV-BS距离的影响，而且还提供了完善水下切换协议的战略见解。从而提高B-UWAN的运行可靠性和服务连续性。
