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arXiv · 2101.03441

Rate Allocation and Content Placement in Cache Networks

Khashayar Kamran·Armin Moharrer·Stratis Ioannidis·Edmund Yeh
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Abstract

We introduce the problem of optimal congestion control in cache networks, whereby \emph{both} rate allocations and content placements are optimized \emph{jointly}. We formulate this as a maximization problem with non-convex constraints, and propose solving this problem via (a) a Lagrangian barrier algorithm and (b) a convex relaxation. We prove different optimality guarantees for each of these two algorithms; our proofs exploit the fact that the non-convex constraints of our problem involve DR-submodular functions.

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Khashayar Kamran, Armin Moharrer, Stratis Ioannidis, Edmund Yeh. 2021-01-09. Rate Allocation and Content Placement in Cache Networks. https://arxiv.org/abs/2101.03441

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