TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Minimum Bandwidth Regenerating Codes Based on Cyclic VFR Codes |
| 영문제목(English Title) |
Minimum Bandwidth Regenerating Codes Based on Cyclic VFR Codes |
| 저자(Author) |
Jing Wang
Shuxia Wang
Tiantian Wang
Xuefei Zhang
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| 원문수록처(Citation) |
VOL 13 NO. 07 PP. 3583 ~ 3598 (2019. 07) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
In order to improve the reliability and repair efficiency of distributed storage systems, minimum bandwidth regenerating (MBR) codes based on cyclic variable fractional repetition (VFR) codes are constructed in this thesis, which can repair failed nodes accurately. Specifically, in order to consider the imbalance of data accessed by the users, cyclic VFR codes are constructed according to that data with different heat degrees are copied in different repetition degrees. Moreover, we divide the storage nodes into groups, and construct MBR codes based on cyclic VFR codes to improve the file download speed. Performance analysis and simulation results show that, the repair locality of a single node failure is always 2 when MBR codes based on cyclic VFR codes are adopted in distributed storage systems, which is obviously superior to the traditional MBR codes. Compared with RS codes and simple regenerating codes, the proposed MBR codes based on cyclic VFR codes have lower repair locality, repair complexity and bandwidth overhead, as well as higher repair efficiency. Moreover, relative to FR codes, the MBR codes based on cyclic VFR codes can be applicable to more storage systems.
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| 키워드(Keyword) |
Distributed storage systems
minimum bandwidth regenerating codes
variable fractional repetition codes
repair locality
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| 파일첨부 |
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