Performance Evaluation of Breadcrumbs in Wireless Multi-Hop Cache Networks

Kento IKKAKU  Miki YAMAMOTO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E102-B   No.4   pp.845-854
Publication Date: 2019/04/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2018EBP3154
Type of Manuscript: PAPER
Category: Network
Keyword: 
cache networks,  wireless multi-hop networks,  in-network guide,  in-network cache,  

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Summary: 
In this paper, we first evaluate Breadcrumbs in wireless multi-hop networks and reveal that they brings throughput improvement of not only popular content but also less popular content. Breadcrumbs can distribute popular content traffic towards edges of a wireless network, which enables low-popularity content to be downloaded from the gateway node. We also propose a new caching decision, called receiver caching. In receiver caching, only the receiver node caches the transmitted content. Our simulation results show that receiver caching prevents frequent replacement of cached content, which reduces invalid Breadcrumbs trails to be remained. And they also show that receiver caching significantly improves the total throughput performance of Breadcrumbs.