Placement delivery array design for the coded caching scheme in medical data sharing

Rong Sun, Huihui Zheng, Jingwei Liu, Xiaojiang Du, Mohsen Guizani

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A coded caching scheme for efficient storage and access of medical data is discussed in this paper. Being an inspiring technology for improving the availability and sharing of medical data, the coded caching scheme for medical data is not only convenient for the medical staffs to grasp the patients’ health conditions and treatment history in time, but also effective for the patients to obtain improved quality of medical services. In this paper, the coded caching scheme for the combination network which is the model for the medical data sharing is studied. In the combination network, the server communicates with the users via multiple relays, and the relays as well as the users have cache memories. Using the maximum distance separable codes and placement delivery array (PDA) algorithm, the coded placement phase and delivery phase for combination networks are designed. In addition, for combination networks that satisfy the resolvability property, we extend the PDA algorithm to the case where the users’ priority is considered. The proposed scheme greatly reduces the subpacketization level with slightly increasing the transmission rate. The users with higher priority can get the requested content faster. We demonstrate that relays with cache memories can reduce the data transmission in peak time. The gap between the upper bound and lower bound of the transmission rate is gradually decreased with the increase in the users’ memories. The proposed scheme will shorten the latency time of the system and improve system efficiency for storage and access of medical data.

Original languageEnglish
Pages (from-to)867-878
Number of pages12
JournalNeural Computing and Applications
Volume32
Issue number3
DOIs
StatePublished - 1 Feb 2020

Keywords

  • Caching architecture of medical data
  • Coded caching
  • Combination networks
  • MDS codes
  • Placement delivery array

Fingerprint

Dive into the research topics of 'Placement delivery array design for the coded caching scheme in medical data sharing'. Together they form a unique fingerprint.

Cite this