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1. (WO2018218850) DECENTRALIZED CODED CACHING PLACEMENT METHOD AND SYSTEM FOR FILES WITH HETEROGENEOUS SIZES

Pub. No.:    WO/2018/218850    International Application No.:    PCT/CN2017/106449
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed Oct 18 01:59:59 CEST 2017
IPC: H04L 29/08
Applicants: SHANGHAI JIAO TONG UNIVERSITY
上海交通大学
Inventors: XIONG, Hongkai
熊红凯
LI, Chenglin
李成林
CHENG, Han
程晗
Title: DECENTRALIZED CODED CACHING PLACEMENT METHOD AND SYSTEM FOR FILES WITH HETEROGENEOUS SIZES
Abstract:
The present invention provides a decentralized coded caching placement method and system for files with heterogeneous sizes. The method uses a decentralized coded caching optimization placement method, in combination with the size of files at a server, the capacity limit of the local cache of user terminals and file downloading requests of different user terminals, to determine the cache proportions of files to be cached by user terminals, finally realizing the minimization of the code rate required by a shared link at the server for satisfying various file downloading requests of user terminals. The present invention improves the utilization rate of the local cache of user terminals, and effectively reduces the load of the shared link at the server.