Wireless Sensor Networks (WSNs) have gained global attention in recent times due to their vast applications in various fields. These networks can face the disruption of data transmission due to sensor node failures when placed in harsh, inaccessible, and adverse environments such as battlefields or monitoring in enemy territory. The specific tasks performed by the collaboration among the sensor nodes in WSNs by internode connectivity may be terminated. Besides this, due to the failure of sensor nodes, the area covered by the network may be limited, which can cause damage to the objectives for such a network, as there might be an unaware danger in the lost area. Connectivity is a big problem in mobile WSNs due to the mobility of nodes. Researchers have developed a lot of algorithms that are capable enough for connectivity problems, but they do not emphasize the loss of coverage. We try to fill these gaps by proposing the new hybrid algorithm PACR (Position-Aware protocol for Connectivity Restoration). The concept behind PACR is the same as a person who writes his will before death on a deathbed. In the same way, when the sensor energy is below the threshold, it is converted into a recovery coordinator and generates a recovery plan. This accelerates the recovery by decreasing the time needed for failure identification. For the recovery process, the neighbor’s nodes do not travel to the exact position of the failed node. Instead, they just move to the distance where they can build communication links with other nodes. This greatly prolongs the network lifetime. The simulation results show that PACR outperforms other techniques present in the literature.

中文翻译：

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PACR：用于移动传感器网络中的连接恢复的位置感知协议

无线传感器网络（WSN）由于其在各个领域的广泛应用，近年来已引起全球关注。当放置在恶劣，不可访问和不利的环境（例如战场或在敌国领土上进行监视）时，这些网络可能会由于传感器节点故障而面临数据传输中断的麻烦。由WSN中的传感器节点之间通过节点间连接性的协作执行的特定任务可以终止。除此之外，由于传感器节点的故障，网络覆盖的区域可能会受到限制，这可能会损坏该网络的目标，因为丢失的区域可能没有意识到的危险。由于节点的移动性，连接性在移动WSN中是一个大问题。研究人员开发了很多算法，足以解决连接问题，但他们并不强调失去覆盖面。我们尝试通过提出新的混合算法PACR（用于连接恢复的位置感知协议）来填补这些空白。PACR背后的概念与在临终前在死前写下遗嘱的人相同。同样，当传感器能量低于阈值时，它将转换为恢复协调器并生成恢复计划。通过减少故障识别所需的时间，可以加快恢复速度。对于恢复过程，邻居的节点不会移动到故障节点的确切位置。相反，它们只是移动到可以与其他节点建立通信链接的距离。这大大延长了网络寿命。仿真结果表明，PACR优于文献中提供的其他技术。