English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This paper focuses on edge caching in dense heterogeneous cellular networks(HetNets), in which small base stations (SBSs) with limited cache size storethe popular contents, and massive multiple-input multiple-output (MIMO) aidedmacro base stations provide wireless self-backhaul when SBSs require thenon-cached contents. Our aim is to address the effects of cell load and hitprobability on the successful content delivery (SCD), and present the minimumrequired base station density for avoiding the access overload in an arbitrarysmall cell and backhaul overload in an arbitrary macrocell. The massive MIMObackhaul achievable rate without downlink channel estimation is derived tocalculate the backhaul time, and the latency is also evaluated in suchnetworks. The analytical results confirm that hit probability needs to beappropriately selected, in order to achieve SCD. The interplay between cachesize and SCD is explicitly quantified. It is theoretically demonstrated thatwhen non-cached contents are requested, the average delay of the non-cachedcontent delivery could be comparable to the cached content delivery with thehelp of massive MIMO aided self-backhaul, if the average access rate of cachedcontent delivery is lower than that of self-backhauled content delivery.Simulation results are presented to validate our analysis.

Edge Caching in Dense Heterogeneous Cellular Networks with Massive MIMO Aided Self-backhaul