A Novel Content Caching and Delivery Scheme for Millimeter Wave Device-to-Device Communications
Theshani Nuradha, Tharaka Samarasinghe, Kasun T. Hemachandra
TL;DR
This paper introduces a new content caching and delivery scheme for millimeter wave device-to-device networks, enhancing content delivery success and energy efficiency compared to traditional methods.
Contribution
It proposes a novel content placement strategy and heuristic delivery algorithm tailored for mmWave D2D networks, improving offloading and energy efficiency.
Findings
Increased successful content delivery probability
Enhanced traffic offloading gain
Significant energy efficiency improvements
Abstract
A novel content caching strategy is proposed for a cache enabled device-to-device (D2D) network where the user devices are allowed to communicate using millimeter wave (mmWave) D2D links (> 6 GHz) as well as conventional sub 6 GHz cellular links. The proposed content placement strategy maximizes the successful content delivery probability of a line of sight D2D link. Furthermore, a heuristic algorithm is proposed for efficient content delivery. The overall scheme improves the successful traffic offloading gain of the network compared to conventional cache-hit maximizing content placement and delivery strategies. Significant energy efficiency improvements can also be achieved in ultra-dense networks.
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