Presentation 2018-08-24
System Time Characteristics and Optimal Aggregation Number of Non-statistical Data Aggregation Scheme
Hideaki Yoshino, Kenko Ota, Takefumi Hiraguri,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In IoT systems utilizing a large amount of small-sized sensor data, a data aggregation function, which summarizes spatially distributed data, is effective for saving limited communication resources such as the radio frequency and sensor-node energy. In a previous study, we have analyzed two fundamental statistical data aggregation schemes: constant interval and constant number, and derived the stationary distribution and the Laplace-Stieltjes transform (LST) of a system time and a total system time for each aggregation scheme. We also derived simple and accurate approximation formulas for the optimal aggregation interval and number. In this paper, we analyze nonstatistical data aggregation scheme with the constant aggregation number. We analytically derive the stationary distribution and LST of the system time and the total system time and give an approximation for the mean total system time. We then numerically evaluated the stationary mean system time characteristics. We confirmed that the approximation gives sufficient accuracy for practical use. In addition, we clarified that the mean total system time has a linear relation to the overhead ratio, which corresponds to the header ratio to the transmitted data, and the optimal traffic intensity that minimizes the mean total system time does not depend on the overhead ratio. These results can provide a theoretical basis and guideline for designing aggregation devices such as IoT gateways.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) sensor data / optimal aggregation / IoT / queueing analysis / communication traffic
Paper # CQ2018-55
Date of Issue 2018-08-16 (CQ)

Conference Information
Committee CQ
Conference Date 2018/8/23(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Ritsumeikan Univ. Biwako-Kusatsu Campus (BKC)
Topics (in Japanese) (See Japanese page)
Topics (in English) IoT/M2M, Wireless Communication, QoS and QoE in Wireless Communication, Wireless Resource Allocation, Wireless Transmission Quality, Cross layer Technology, Ad-hoc Network, etc.
Chair Takanori Hayashi(Hiroshima Inst. of Tech.)
Vice Chair Hideyuki Shimonishi(NEC) / Jun Okamoto(NTT)
Secretary Hideyuki Shimonishi(NTT) / Jun Okamoto(Nippon Inst. of Tech.)
Assistant Chikara Sasaki(KDDI Research) / Yoshiaki Nishikawa(NEC) / Ryo Yamamoto(UEC)

Paper Information
Registration To Technical Committee on Communication Quality
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) System Time Characteristics and Optimal Aggregation Number of Non-statistical Data Aggregation Scheme
Sub Title (in English)
Keyword(1) sensor data
Keyword(2) optimal aggregation
Keyword(3) IoT
Keyword(4) queueing analysis
Keyword(5) communication traffic
1st Author's Name Hideaki Yoshino
1st Author's Affiliation Nippon Institute of Technology(NIT)
2nd Author's Name Kenko Ota
2nd Author's Affiliation Nippon Institute of Technology(NIT)
3rd Author's Name Takefumi Hiraguri
3rd Author's Affiliation Nippon Institute of Technology(NIT)
Date 2018-08-24
Paper # CQ2018-55
Volume (vol) vol.118
Number (no) CQ-192
Page pp.pp.53-58(CQ),
#Pages 6
Date of Issue 2018-08-16 (CQ)