Non-symmetric multi-antenna coded caching for location-dependent content delivery
Mahmoodi, Hamidreza Bakhshzad; Salehi, MohammadJavad; Tölli, Antti (2022-08-11)
H. B. Mahmoodi, M. Salehi and A. Tölli, "Non-Symmetric Multi-Antenna Coded Caching for Location-Dependent Content Delivery," ICC 2022 - IEEE International Conference on Communications, 2022, pp. 5165-5170, doi: 10.1109/ICC45855.2022.9838415.
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https://urn.fi/URN:NBN:fi-fe202301102168
Tiivistelmä
Abstract
Immersive viewing, as the next-generation interface for human-computer interaction, is emerging as a wireless application. A genuinely wireless immersive experience necessitates immense data delivery with ultra-low latency, raising stringent requirements for future wireless networks. In this regard, efficient usage of in-device storage and computation capabilities is a potential candidate for addressing these requirements. In addition, recent advancement in multi-antenna transmission has significantly enhanced wireless communication. Hence, this paper proposes a novel location-based multi-antenna coded cache placement and delivery scheme. We first formulate a linear programming cache allocation problem to provide a uniform quality of experience in different network locations; then, cache-placement is done for each location independently. Subsequently, based on the users’ spatial realizations, a transmission vector is created considering diverse available memory at each user. Moreover, a weighted-max-min optimization is used for the beamformers to support different transmission rates. Finally, numerical results are used to show the performance of the proposed scheme.
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