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摘要:
We present a problem for benchmarking the robustness of cellular up-links, in an automatic weather station (AWS) testbed. Based on the problem, we conduct a small-scale measurement study of robustness, where the AWS is equipped with four (4) cellular modems for weather data delivery. The effectiveness of up-links is challenging because of overlapping spatial-temporal factors such as the presence of good reflectors that lead to multi-path effects, interference, network load or other reasons. We argue that, there is a strong need for independent assessments of their robustness, to perform end-to-end network measurement. However, it is yet difficult to go from a particular measurement to an assessment of the entire network. We extensively measure the variability of Radio Signal Strength (RSSI) as link metric on the cellular modems. The RSSI is one of the important link metrics that can determine the robustness of received RF signals, and explore how they differed from one another at a particular location and instant time. We also apply the statistical analysis that quantifies the level of stability by considering the robustness, referring short-term variation, and determines good up-link in comparison to weak one. The results show that the robustness of cellular up-links exists for an unpredictable period of time and lower than one could hope. More than 50% of up-links are intermittent. Therefore, we plan to extend our work by exploring RSSI thresholds, to develop a classification scheme supporting a decision whether a link is either intermittent or not. This will help in normalizing the level of stability, to design the RSSI estimation metric for the robust routing protocol in weather data networks.
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篇名 Benchmarking the Robustness of Cellular Up-Links in Automatic Weather Station Networks
来源期刊 通讯与网络(英文) 学科 医学
关键词 CELLULAR LINKS ROBUSTNESS Automatic Weather Station TERRESTRIAL Wireless LINKS INTERMITTENT LINKS
年,卷(期) 2018,(3) 所属期刊栏目
研究方向 页码范围 78-92
页数 15页 分类号 R73
字数 语种
DOI
五维指标
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研究主题发展历程
节点文献
CELLULAR
LINKS
ROBUSTNESS
Automatic
Weather
Station
TERRESTRIAL
Wireless
LINKS
INTERMITTENT
LINKS
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
通讯与网络(英文)
季刊
1949-2421
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
427
总下载数(次)
0
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