University of Oulu

Liu, J., Xu, Y., Shen, Y., Takakura, H., Jiang, X., & Taleb, T. (2022). Buffer space management in intermittently connected internet of things: Sharing or allocation? IEEE Internet of Things Journal, 9(13), 10961–10977.

Buffer Space Management in Intermittently Connected Internet of Things : sharing or Allocation?

Saved in:
Author: Liu, Jia1,2; Xu, Yang1; Shen, Yulong1;
Organizations: 1School of Computer Science and Technology, Xidian University, Xi’an, China
2Center for Cybersecurity Research and Development, National Institute of Informatics, Tokyo, Japan
3School of Systems Information Science, Future University Hakodate, Hakodate, Japan
4Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, Finland
5Department of Computer and Information Security, Sejong University, Seoul, South Korea
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.5 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2022-12-07


The efficient buffer space management in intermittently connected Internet of Things (IC-IoT) is of great importance for data delivery performance guarantee in such networks. This article considers two typical buffer space management policies for IC-IoT, i.e., buffer-space sharing (BS) and buffer-space allocation (BA). The BS policy allows the buffer space of each device to be fully shared by the exogenous packets and the packets from other devices, while the BA policy divides the buffer space into the source buffer and relay buffer for storing the two kinds of packets separately. With the help of the queueing theory and Markov chain theory, we develop a theoretical framework to capture the sophisticated queueing processes for the buffer space under either BS or BA policy, which enables the limiting distribution of the buffer occupation state to be determined. We then provide theoretical modeling for throughput and expected end-to-end delay to evaluate the fundamental performance of the IC-IoT under the BS and BA policies. Finally, extensive simulation and numerical results are presented to validate theoretical models and to demonstrate the effects of BS and BA policies on the IC-IoT performance.

see all

Series: IEEE internet of things journal
ISSN: 2372-2541
ISSN-E: 2327-4662
ISSN-L: 2327-4662
Volume: 9
Issue: 13
Pages: 10961 - 10977
DOI: 10.1109/jiot.2021.3128523
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the National Key Research and Development Program of China under Grant 2018YFE0207600; in part by the National Natural Science Foundation of China under Grant 62102303, Grant 61802292, and Grant 61972308; in part by JSPS KAKENHI under Grant Numbers JP20K14742 and JP18H03235; in part by the Project of Cyber Security Establishment with Inter University Cooperation; in part by the Key Research and Development Program of Shaanxi under Grant 2021KWZ-04, Grant 2019ZDLGY13-03-01, and Grant 2021ZDLGY07-05; and in part by the Academy of Finland 6 Genesis Project under Grant 318927.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
Copyright information: © The Authors 2022. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see