Information Flow Graph for Distributed Caching without Newcomers over a Broadcast Medium
Research output: Contribution to book/conference proceedings/anthology/report › Conference contribution › Contributed › peer-review
Contributors
Abstract
The trade-offs between storage and repair traffic for replacing failed storage nodes with new nodes (newcomers) in data centers with an omniscient controller are well understood. However, in edge storage settings, newcomers are not readily available, necessitating resilient data storage (caching) without newcomers. Edge storage nodes can often communicate via a broadcast wireless medium, which can be exploited to reduce the transmitted repair traffic via network coding. Repairs for resilient distributed caching without newcomers over a broadcast medium with Random Linear Network Coding (RLNC), which does not require an omniscient controller, have not been previously studied. We develop an information-theoretic model to characterize the theoretically achievable trade-offs between stored data and transmitted repair data in the RLNC broadcast setting without newcomers. Specifically, we formulate an Information Flow Graph (FG) model and identify all cuts in the resulting FG. We validate the theoretical FG model with simulations that demonstrate that the practically achievable trade-offs are close to the theoretical trade-offs.
Details
Original language | English |
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Title of host publication | 2023 IEEE 24th International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2023 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 30-35 |
Number of pages | 6 |
ISBN (electronic) | 979-8-3503-3165-3 |
Publication status | Published - 2023 |
Peer-reviewed | Yes |
Publication series
Series | IEEE International Symposium on World of Wireless Mobile and Multimedia Networks (WoWMoM) |
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ISSN | 2770-0526 |
Conference
Title | 24th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2023 |
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Duration | 12 - 15 June 2023 |
City | Boston |
Country | United States of America |
Keywords
ASJC Scopus subject areas
Keywords
- Broadcast, Distributed caching, Random Linear Network Coding (RLNC), Resilience