University of Oulu

H. B. Mahmoodi, M. Salehi and A. Tölli, "Non-Symmetric Coded Caching for Location-Dependent Content Delivery," 2021 IEEE International Symposium on Information Theory (ISIT), 2021, pp. 712-717, doi: 10.1109/ISIT45174.2021.9518026

Non-symmetric coded caching for location-dependent content delivery

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Author: Mahmoodi, Hamidreza Bakhshzad1; Salehi, Mohammad Javad1; Tölli, Antti1
Organizations: 1Center for Wireless Communications, University of Oulu, 90570 Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-10-20


Immersive viewing is emerging as the next interface evolution for human-computer interaction. A truly wireless immersive application necessitates immense data delivery with ultra-low latency, raising stringent requirements for next-generation wireless networks. A potential solution for addressing these requirements is through the efficient usage of in-device storage and computation capabilities. This paper proposes a novel location-based coded cache placement and delivery scheme, which leverages the nested code modulation (NCM) to enable multi-rate multicasting transmission. To provide a uniform quality of experience in different network locations, we formulate a linear programming cache allocation problem. Next, based on the users’ spatial realizations, we adopt an NCM based coded delivery algorithm to efficiently serve a distinct group of users during each transmission. Numerical results demonstrate that the proposed location-based delivery method significantly increases transmission efficiency compared to state of the art.

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ISBN: 978-1-5386-8209-8
ISBN Print: 978-1-5386-8210-4
Pages: 712 - 717
DOI: 10.1109/ISIT45174.2021.9518026
Host publication: 2021 IEEE International Symposium on Information Theory, ISIT 2021, 12-20 July 2021, Melbourne, Australia
Conference: IEEE International Symposium on Information Theory
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by the Academy of Finland under grants no. 319059 (Coded Collaborative Caching for Wireless Energy Efficiency) and 318927 (6Genesis Flagship).
Academy of Finland Grant Number: 319059
Detailed Information: 319059 (Academy of Finland Funding decision)
318927 (Academy of Finland Funding decision)
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