Study on distributed storage and cache-enabled network in wireless communication = 무선 통신에서의 분산 저장 기법과 캐시를 이용한 네트워크에 관한 연구

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We address storage and its applications in wireless networks. Handling exploding mobile traffic is difficult by current mobile resource. Massive MIMO and cell desification are known to be a promising techniques to resolve this, but it also faces physical limitation of cost problem. In this context, we proposed a distributed storage allocation in wireless network considering data storing as well as data recovery. For High and low SNR, maximal symmetric allocation and minimal allocation with complete storage are shown to be optimal respectively. Based on fundamental researches, we also investigated its applications in wireless cellular network. Similarly, optimal file fraction at helper was investigated. Furthermore, to deal with exploding mobile video traffic, multicast transmission with prefix caching is studied for asynchronous requests of the same files. Tight upper and lower bounds for transmission time was given and convexity of transmission time in term of rate is also shown. Due to multicast effect, prefix allocation is counter intuitively changed.
Advisors
Choi, Wanresearcher최완researcher
Description
한국과학기술원 :전기및전자공학부,
Publisher
한국과학기술원
Issue Date
2017
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2017.2,[iv, 55 p. :]

Keywords

Distributed storage; cache memory; cellular network; multicast ransmission; wireless communication; 캐시 메모리; 분산 저장 장치; 셀룰러 네트워크; 멀티캐스트 전송; 프리픽스 캐시

URI
http://hdl.handle.net/10203/242027
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=675825&flag=dissertation
Appears in Collection
EE-Theses_Ph.D.(박사논문)
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