University of Oulu

Y. Jiang, B. Wang, F. -C. Zheng, M. Bennis and X. You, "Joint MDS Codes and Weighted Graph-Based Coded Caching in Fog Radio Access Networks," in IEEE Transactions on Wireless Communications, vol. 21, no. 9, pp. 6789-6802, Sept. 2022, doi: 10.1109/TWC.2022.3143888

Joint MDS codes and weighted graph-based coded caching in fog radio access networks

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Author: Jiang, Yanxiang1,2; Wang, Bao1; Zheng, Fu-Chun3,1;
Organizations: 1National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
2School of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen 518055, China
3School of Electronic and Information Engi- neering, Harbin Institute of Technology, Shenzhen 518055, China
4Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1.9 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2022-10-06


In this paper, we investigate maximum-distance separable (MDS) codes and weighted graph based coded caching in fog radio access networks (F-RANs). In the placement phase, the redundant MDS based coded placement scheme is used to provide redundant coded packets and homogeneous cached contents. The redundant coded packets can be used to construct multicast opportunities for similar requests. In the delivery phase, the weighted graph based coded delivery scheme is conducted based on homogeneous cached contents, which can induce considerable multicast opportunities. By integrating the above two schemes, a joint MDS codes and weighted graph based coded caching policy is proposed to minimize the fronthaul load. Finally, we theoretically analyze the performance of the proposed policy by deriving the lower and upper bounds of the fronthaul load. Simulation results show that our proposed policy can provide 44% savings in the fronthaul load compared to the MDS-based uncoded delivery policy.

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Series: IEEE transactions on wireless communications
ISSN: 1536-1276
ISSN-E: 1558-2248
ISSN-L: 1536-1276
Volume: 21
Issue: 9
Pages: 6789 - 6802
DOI: 10.1109/twc.2022.3143888
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 under Grant 2021YFB2900300, in part by the National Natural Science Foundation of China under Grant 61971129, and in part by the Shenzhen Science and Technology Program under Grant KQTD20190929172545139.
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