一种基于SDN的物联网数据聚合方案

doi:10.11959/j.issn.1000-0801.2019028

Abstract

Abstract:

There are many redundant parts in the data generated and transmitted by IoT devices.Transmitting this data reduces network lifetime and bandwidth.Aiming at the problem,the aggregation gateway layer was proposed,and a SDN-based IoT data aggregation architecture and algorithm were designed.The simulation analysis shows that compared with the architecture of the ordinary gateway and OF-GW,the network lifetime is improved by about 32.6%,and the amount of data packets sent by the sensing layer to the network layer is reduced by 6.1% to 55.1%.Compared with the LEACH algorithm,the designed rule algorithm reduces the average delay of data aggregation by about 24.1%,while avoiding data loss and improving the accuracy of data aggregation.

Key words: internet of things, SDN, data aggregation, architecture, LEACH, grey prediction model

CLC Number:

TP393

Bowei WANG,Jin TAN,Wenbin JIANG. Data aggregation scheme based on SDN for internet of things[J]. Telecommunications Science, 2019, 35(2): 27-34.

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References 15

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参数	取值
网络区域大小	100 m×200 m
传感器节点数量n	100
网关节点坐标sink	（50 m,200 m）
传感器节点通信范围C	210 m
E₀	0.5 J
E_elec	50 nJ/bit
E_fs	10 pJ/(bit.m²)
E_amp	0.001 3 pJ/(bit.m⁴)
d₀	87 m
E_da	5 nJ/bit
节点当选簇头比例p	0.1
ω₁	0.8
ω₂	0.2
T	0.5 s
OF-GW匹配比例q	0.8
数据分组大小k	4 000 bit
运行轮次r_max	1 500

参数	取值
智能设备数量n	100
聚合周期轮次T	2
设备重复发送概率p	0.5
OF-GW匹配比例q	0.8
运行轮次r_max	1 500

Data aggregation scheme based on SDN for internet of things

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