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Edge caching for coverage and capacity-aided heterogeneous networks

Abstract : —A two-tier heterogeneous cellular network (HCN) with intra-tier and inter-tier dependence is studied. The macro cell deployment follows a Poisson point process (PPP) and two different clustered point processes are used to model the cache-enabled small cells. Under this model, we derive approximate expressions in terms of finite integrals for the average delivery rate considering inter-tier and intra-tier dependence. On top of the fact that cache size drastically improves the performance of small cells in terms of average delivery rate, we show that rate splitting of limited-backhaul induces non-linear performance variations, and therefore has to be adjusted for rate fairness among users of different tiers.
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Submitted on : Thursday, July 12, 2018 - 12:31:18 PM
Last modification on : Friday, April 8, 2022 - 3:01:23 AM
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Ejder Bastug, Mehdi Bennis, Marios Kountouris, Merouane Debbah. Edge caching for coverage and capacity-aided heterogeneous networks. 2016 IEEE International Symposium on Information Theory (ISIT), Jul 2016, Barcelona, Spain. ⟨10.1109/ISIT.2016.7541306⟩. ⟨hal-01789331⟩



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