Mobile sink can implicitly provide uniform energy consumption across sensor networks and load-balanced data delivery by alleviating the sensor data disruptions and hotspot problems. Advertisement of mobile sink's current position in ring routing introduces control packet overhead in terms of energy consumption and leads to shorter network lifetime. In order to minimize this overhead, we have exploited the functionality of ring nodes rather than anchor nodes for the advertisement of mobile sink's current position and forwarding the aggregated data towards mobile sink. In this paper, we propose a novel, distributed, Delay Aware and Energy-Efficient Opportunistic Node Selection in Restricted Routing (DA-EEORR) protocol, suitable for delay-sensitive applications. Based on asynchronous working-sleeping cycle of sensor nodes, our proposed scheme utilizes the concept of opportunistic connection random graph in ring routing for selection of next-hop using optimal link and path connectivity in restricted search space. Our simulation results reveal that proposed scheme outperforms the existing benchmarks i.e., hierarchical mobile sink routing schemes in terms of control packet overhead, network lifetime, energy consumption and packet delivery ratio.

通过减少传感器数据中断和热点问题，移动接收器可以隐式地在整个传感器网络中提供统一的能耗，并实现负载平衡的数据传输。移动接收器当前在环形路由中的位置的广告在能耗方面引入了控制数据包开销，并导致网络寿命缩短。为了最大程度地减少这种开销，我们利用环形节点而不是锚节点的功能来通告移动接收器的当前位置，并将聚合的数据转发到移动接收器。在本文中，我们提出了一种新颖的，分布式的，延迟感知和受限路由中的节能机会节点选择（DA-EEORR）协议，适用于对延迟敏感的应用。基于传感器节点的异步工作-睡眠周期，我们提出的方案利用环形路由中的机会连接随机图的概念，在受限搜索空间中使用最佳链接和路径连接来选择下一跳。我们的仿真结果表明，该方案在控制数据包开销，网络寿命，能耗和数据包传输率方面优于现有基准，即分层移动宿路由方案。