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Abstract
We consider an optimal cache-placement-and-delivery-policy where traffic is offloaded from Single-Point Unicast (SPUC) service by using network-level Orthogonal Multipoint Multicast (OMPMC) scheme. The files are classified into two sets. The most popular files are cached at the BSs using a probabilistic approach and are served by OMPMC. The remaining files are fetched from the core network on demand and served by SPUC. Optimal compound scheme is analyzed, based on resource allocation between OMPMC and multi-antenna SPUC schemes. If a user is not able to successfully receive the requested file due to its experienced signal-to-interference-plus-noise ratio, its request is in outage. A closed-form expression is derived for the total outage probability based on stochastic geometry for the compound scheme. An optimization problem is formulated to design the caching policy for the compound scheme. The optimal solution to this problem is obtained by finding optimal cache placement, bandwidth allocation, and file classification. Simulation results show that the compound scheme outperforms other caching schemes in terms of the total outage probability.
Original language | English |
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Title of host publication | 2022 IEEE Wireless Communications and Networking Conference (WCNC) |
Publisher | IEEE |
Pages | 2268-2273 |
Number of pages | 6 |
ISBN (Electronic) | 978-1-6654-4266-4 |
DOIs | |
Publication status | Published - 16 May 2022 |
MoE publication type | A4 Conference publication |
Event | IEEE Wireless Communications and Networking Conference - Austin, United States Duration: 10 Apr 2022 → 13 Apr 2022 |
Publication series
Name | IEEE Wireless Communications and Networking Conference |
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ISSN (Electronic) | 1558-2612 |
Conference
Conference | IEEE Wireless Communications and Networking Conference |
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Abbreviated title | WCNC |
Country/Territory | United States |
City | Austin |
Period | 10/04/2022 → 13/04/2022 |
Keywords
- Wireless caching
- compound cache delivery policy
- multipoint multicasting
- parametric optimization problem.
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Dive into the research topics of 'Cellular Traffic Offloading with Optimized Compound Single-point Unicast and Cache-based Multipoint Multicast'. Together they form a unique fingerprint.Projects
- 1 Finished
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Coded Collaborative Caching for Wireless Energy Efficiency
Tirkkonen, O. (Principal investigator)
01/09/2018 → 31/08/2022
Project: Academy of Finland: Other research funding