發(fā)布時間：2018-04-22 18:55

  本文選題：移動傳感器網(wǎng)絡(luò) + 多監(jiān)控任務(wù)　； 參考：《工程科學(xué)與技術(shù)》2017年02期

【摘要】：在多監(jiān)控任務(wù)移動傳感器網(wǎng)絡(luò)中,不同的監(jiān)控對象對數(shù)據(jù)傳輸實時性有著不同的要求。為滿足監(jiān)控數(shù)據(jù)不同的實時性要求,提出了既能滿足軟實時監(jiān)控要求,也能滿足硬實時監(jiān)控要求的多級分層實時數(shù)據(jù)路由協(xié)議MRDR(layer-based multilevel real-time data routing protocol)。MRDR協(xié)議將分層機(jī)制引入移動傳感器網(wǎng)絡(luò),將網(wǎng)絡(luò)分成寬度相等的若干圓環(huán)。對具有實時性要求更低的普通事件消息,MRDR在消息失效前以盡量低的能耗將消息轉(zhuǎn)發(fā)至sink節(jié)點(diǎn)。對于實時性要求更高的緊急事件消息,MRDR讓消息以層間多跳方式實時傳輸?shù)絪ink。同時,針對硬實時路由過程中的節(jié)點(diǎn)空洞問題,提出了消息回傳機(jī)制,使得緊急事件消息能繞過節(jié)點(diǎn)空洞并最終傳輸至sink。最后,為降低網(wǎng)絡(luò)中的消息冗余,設(shè)計了消息隊列管理機(jī)制,給出了隊列滿時的消息丟棄原則。為評價算法性能,仿真實驗對比了MRDR與其他3種算法在網(wǎng)絡(luò)壽命、數(shù)據(jù)傳輸成功率與消息平均延遲方面的表現(xiàn),結(jié)果驗證了算法的有效性。在不同的網(wǎng)絡(luò)環(huán)境下,MRDR算法能有效適應(yīng)多監(jiān)控任務(wù)移動傳感器網(wǎng)絡(luò),滿足具有不同實時性要求的不同消息的傳輸要求。
[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.
【作者單位】： 四川師范大學(xué)基礎(chǔ)教學(xué)學(xué)院;四川大學(xué)計算機(jī)學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(61303204;U1333113)
【分類號】：TP212.9;TN929.5

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