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Performance Analysis of Mobile Cellular Networks Accommodating Cellular-IoT Communications with Immediate Release of Radio Resources

Shuya ABE, Go HASEGAWA, Masayuki MURATA

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Summary :

It is now becoming important for mobile cellular networks to accommodate all kinds of Internet of Things (IoT) communications. However, the contention-based random access and radio resource allocation used in traditional cellular networks, which are optimized mainly for human communications, cannot efficiently handle large-scale IoT communications. For this reason, standardization activities have emerged to serve IoT devices such as Cellular-IoT (C-IoT). However, few studies have been directed at evaluating the performance of C-IoT communications with periodic data transmissions, despite this being a common characteristic of many IoT communications. In this paper, we give the performance analysis results of mobile cellular networks supporting periodic C-IoT communications, focusing on the performance differences between LTE and Narrowband-IoT (NB-IoT) networks. To achieve this, we first construct an analysis model for end-to-end performance of both the control plane and data plane, including random access procedures, radio resource allocation, establishing bearers in the Evolved Packet Core network, and user-data transmissions. In addition, we include the impact of the immediate release of the radio resources proposed in 3GPP. Numerical evaluations show that NB-IoT can support more IoT devices than LTE, up to 8.7 times more, but imposes a significant delay in data transmissions. We also confirm that the immediate release of radio resources increases the network capacity by up to 17.7 times.

Publication
IEICE TRANSACTIONS on Communications Vol.E105-B No.12 pp.1477-1486
Publication Date
2022/12/01
Publicized
2022/06/20
Online ISSN
1745-1345
DOI
10.1587/transcom.2022EBP3052
Type of Manuscript
PAPER
Category
Network

Authors

Shuya ABE
  Osaka University
Go HASEGAWA
  Tohoku University
Masayuki MURATA
  Osaka University

Keyword