Cellular network caching based on multipoint multicast transmissions
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Date
2020-12
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Language
en
Pages
6
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2020 IEEE Global Communications Conference, GLOBECOM 2020 - Proceedings, IEEE Global Communications Conference
Abstract
We consider an optimal cache-placement-and-delivery-policy using Network-level Orthogonal Multipoint Multicasting (OMPMC) for wireless networks. The placement of files in caches of Base Station (BS) is based on a probabilistic model, with controlled cache placement probabilities. File delivery is based on multipoint multicast and network-based orthogonal transmission; all BSs in the network caching a file transmit it synchronously in dedicated radio resources. If the average signal-to-noise ratio associated to a file at a requesting user is less than a threshold, the request is in outage. We derive a closed-form expression for the outage probability for a network modeled as a Poisson Point Process. An optimal caching policy is solved from an optimization problem, and compared to a threshold-based policy, suboptimal partial solutions, and single-point cache delivery. Simulation results show that exploiting OMPMC with optimal cache and bandwidth allocation significantly improves the overall outage probability as compared to single point delivery.Description
Keywords
Cache placement and delivery policy, Multipoint multicast transmission, Resource allocation, Wireless caching
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Citation
Amidzadeh, M, Al-Tous, H, Tirkkonen, O & Caire, G 2020, Cellular network caching based on multipoint multicast transmissions . in 2020 IEEE Global Communications Conference, GLOBECOM 2020 - Proceedings ., 9348023, IEEE Global Communications Conference, IEEE, IEEE Global Communications Conference, Taipei, Taiwan, Republic of China, 07/12/2020 . https://doi.org/10.1109/GLOBECOM42002.2020.9348023
