With the growing concerns about energy saving and security problems in wireless sensor networks (WSNs), we investigated a joint energy saving scheduling and secure routing algorithm for critical event reporting in WSN. When a critical event has been detected, the notification must be safely sent to the sink node through the uplink transmission, and the sink node needs to broadcast the alarm messages to the whole network through the downlink transmission. In the uplink, a joint power allocation and secure routing strategy (JPASR) has been proposed to maximize the routing secure connection probability (RSCP) under the constraint of power. Meanwhile, combined with the level-by-level sleeping scheduling method, the energy-saving and secure uplink transmission can be guaranteed. In the downlink, an energy-first multi-point relays set selection mechanism (EFMSS) is designed to choose the backbone nodes to broadcast messages, and the backbone nodes are waken up by the same level-by-level sleeping scheduling method as the uplink transmission. With the two-step procedure, the critical events are appropriately dealt with and the responses are broadcast to the whole network. Extensive simulations results demonstrate that the energy saving and security performances of the proposed method are superior to the existing ones.

中文翻译：

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无线传感器网络中关键事件报告的联合节能调度和安全路由


随着人们对无线传感器网络（WSN）中节能和安全问题的日益关注，我们研究了一种用于WSN中关键事件报告的联合节能调度和安全路由算法。当检测到严重事件时，通知必须通过上行传输安全地发送到汇聚节点，汇聚节点需要通过下行传输将警报消息广播到全网。在上行链路中，提出了联合功率分配和安全路由策略（JPASR），以在功率约束下最大化路由安全连接概率（RSCP）。同时，结合逐级休眠调度方法，可以保证上行传输的节能和安全。在下行链路中，设计了能量优先的多点中继集选择机制（EFMSS）来选择骨干节点来广播消息，并且通过与上行链路相同的逐级休眠调度方法来唤醒骨干节点传播。通过两步程序，可以适当地处理关键事件并将响应广播到整个网络。大量的仿真结果表明，该方法的节能和安全性能优于现有方法。