{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:43:28Z","timestamp":1762508608984,"version":"build-2065373602"},"reference-count":37,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Symmetry is one of the most important notions in the digital twins-driven manufacturing cyber\u2013physical system (CPS). Real-time acquisition of production data and rapid response to changes in the external environment are the keys to ensuring the symmetry of the CPS. In the service-oriented production process, in order to solve the problem of the service response delay of the production nodes in a smart job shop, a CPS based on mobile edge computing (MEC) middleware is proposed. First, the CPS and MEC for a service-oriented production process are analyzed. Secondly, based on MEC middleware, a CPS architecture model of a smart job shop is established. Then, the implementation of MEC middleware and application layer function modules are introduced in detail. By designing an MEC middleware model and embedding function modules such as data cache management, redundant data filtering, and data preprocessing, the ability of data processing is sunk from the data center to the data source. Based on that, the network performances, such as network bandwidth, packet loss rate, and delay, are improved. Finally, an experiment platform of the smart job shop is used to verify different data processing modes by comparing the network performance data such as bandwidth, packet loss rate, and response delay.<\/jats:p>","DOI":"10.3390\/sym13101839","type":"journal-article","created":{"date-parts":[[2021,10,11]],"date-time":"2021-10-11T01:59:47Z","timestamp":1633917587000},"page":"1839","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Service-Oriented Real-Time Smart Job Shop Symmetric CPS Based on Edge Computing"],"prefix":"10.3390","volume":"13","author":[{"given":"Chuang","family":"Wang","sequence":"first","affiliation":[{"name":"Collaborative Innovation Center for Modern Post, Xi\u2019an University of Posts & Telecommunications, Xi\u2019an 710061, China"},{"name":"School of Computer Science & Technology, Xi\u2019an University of Posts & Telecommunications, Xi\u2019an 710061, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yi","family":"Lv","sequence":"additional","affiliation":[{"name":"School of Computer Science & Technology, Xi\u2019an University of Posts & Telecommunications, Xi\u2019an 710061, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiang","family":"Wang","sequence":"additional","affiliation":[{"name":"China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 510610, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dongyu","family":"Yang","sequence":"additional","affiliation":[{"name":"China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 510610, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guanghui","family":"Zhou","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Manufacturing Systems Engineering, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1109\/JAS.2017.7510349","article-title":"Review on cyber-physical systems","volume":"4","author":"Liu","year":"2017","journal-title":"IEEE\/CAA J. 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