University of Oulu

T. Sanguanpuak, D. Niyato, N. Rajatheva, M. Bennis and M. Latva-aho, "Resource virtualization with edge caching and latency constraint for local B5G operator," 2019 16th International Symposium on Wireless Communication Systems (ISWCS), Oulu, Finland, 2019, pp. 250-254,

Resource virtualization with edge caching and latency constraint for local B5G operator

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Author: Sanguanpuak, Tachporn1; Niyato, Dusit2; Rajatheva, Nandana1;
Organizations: 16G Flagship, University of Oulu, Finland
2School of Comp. Science and Eng., Nanyang Technological University (NTU), Singapore
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2020-04-17


The rapidly increasing demand in indoor smallcell networks has given rise to the concept of local beyond 5G (B5G) operator (OP) for local service delivery. The local B5G OP aims to provide wireless network using licensed subbands in an indoor area and tries to gain profits by renting out the infrastructure to the mobile network operators (MNOs). With local B5G OP deployment, the quality of service (QoS) can be guaranteed at mobile broadband users (UEs) and smart devices, i.e., machine type communications (MTC) and ultra reliable low latency (uRLLC). In this paper, we consider the scenario that the local B5G OP aims to maximize profit by optimizing its infrastructure rental fee while renting out cache-enabled smallcell base stations (SBSs) to the MNOs. Each MNO tries to minimize the cache intensity subject to latency constraint at mobile UE. The concept of infrastructure sharing is also deployed at the local B5G OP such that multiple MNOs can utilize the same cache-enabled SBSs simultaneously and the local B5G OP will cache the popular files according to the MNO’s largest demand. The optimization problems of the local B5G OP and the MNOs can be transformed into geometric programming problems. Then, we show that the Stackelberg equilibrium is obtained through successive geometric programming (SGP) method. Lastly, we perform an extensive performance evaluation that reveals interesting insights including the optimal SBS intensity that MNOs should rent from the local B5G OP as to satisfy end-to-end latency, 10 -3 sec, of data transmission from each SBS to UE. The optimal price of renting out infrastructure for the local B5G OP at the Stackelberg equilibrium is also illustrated.

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Series: International Symposium on Wireless Communication Systems
ISSN: 2154-0217
ISSN-E: 2154-0225
ISSN-L: 2154-0217
ISBN: 978-1-7281-2527-5
ISBN Print: 978-1-7281-2528-2
Pages: 250 - 254
DOI: 10.1109/ISWCS.2019.8877164
Host publication: 2019 16th International Symposium on Wireless Communication Systems (ISWCS) 27-30 August 2019 Oulu, Finland
Conference: International Symposium on Wireless Communication Systems
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work has been financially supported by the Academy of Finland 6Genesis Flagship (grant no. 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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