多监控任务移动传感器网络高效数据路由协议

发布时间：2018-04-22 18:55

本文选题：移动传感器网络 + 多监控任务　；参考：《工程科学与技术》2017年02期

【摘要】：在多监控任务移动传感器网络中,不同的监控对象对数据传输实时性有着不同的要求。为满足监控数据不同的实时性要求,提出了既能满足软实时监控要求,也能满足硬实时监控要求的多级分层实时数据路由协议MRDR(layer-based multilevel real-time data routing protocol)。MRDR协议将分层机制引入移动传感器网络,将网络分成宽度相等的若干圆环。对具有实时性要求更低的普通事件消息,MRDR在消息失效前以尽量低的能耗将消息转发至sink节点。对于实时性要求更高的紧急事件消息,MRDR让消息以层间多跳方式实时传输到sink。同时,针对硬实时路由过程中的节点空洞问题,提出了消息回传机制,使得紧急事件消息能绕过节点空洞并最终传输至sink。最后,为降低网络中的消息冗余,设计了消息队列管理机制,给出了队列满时的消息丢弃原则。为评价算法性能,仿真实验对比了MRDR与其他3种算法在网络寿命、数据传输成功率与消息平均延迟方面的表现,结果验证了算法的有效性。在不同的网络环境下,MRDR算法能有效适应多监控任务移动传感器网络,满足具有不同实时性要求的不同消息的传输要求。
[Abstract]:In multi-task mobile sensor networks, different monitoring objects have different requirements for real-time data transmission. In order to meet the different real-time requirements of monitoring data, it is proposed that it can meet the requirements of soft real-time monitoring. MRDR(layer-based multilevel real-time data routing protocol).MRDR protocol, which can also meet the requirements of hard real-time monitoring, introduces the layered mechanism into mobile sensor networks and divides the network into rings of equal width. MRDR forwards the message to the sink node with as low energy consumption as possible before the message failure for the ordinary event message with lower real-time requirement. MRDR, which requires more real-time emergency messages, allows messages to be transmitted in real time to sinkas in multi-hop mode. At the same time, aiming at the problem of node voids in hard real-time routing, a message return mechanism is proposed to make emergency messages bypass the node holes and transmit to sink. finally. Finally, in order to reduce the message redundancy in the network, a message queue management mechanism is designed, and the message dropping principle when the queue is full is given. In order to evaluate the performance of the algorithm, the performance of MRDR and other three algorithms in network lifetime, data transmission success rate and average message delay are compared. The results show that the algorithm is effective. MRDR algorithm can effectively adapt to multi-task mobile sensor networks in different network environments and meet the transmission requirements of different messages with different real-time requirements.
【作者单位】：四川师范大学基础教学学院;四川大学计算机学院;
【基金】：国家自然科学基金资助项目(61303204;U1333113)
【分类号】：TP212.9;TN929.5

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