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 cacheenabled 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.
In REF , the average delivery rate is analyzed for a two-tier HetNet with inter-tier and intra-tier dependence, where the most popular contents are cached at the SBSs.
Edge caching for coverage and capacity-aided heterogeneous networks
2016 IEEE International Symposium on Information Theory (ISIT)
2016 IEEE International Symposium on Information Theory (ISIT)
Computer Science Mathematics