Abstract
Electronic Product Code Discovery Service (EPCDS) is an important concept in supply chain processes and in Internet of Things (IOT). It allows supply chain participants to search for their partners, communicate with them and share product information using standardized interfaces securely. Many researchers have been proposing different EPCDS models, considering different requirements. In this paper, we describe existing architecture designs of EPCDS systems, namely Directory Service Model, Query Relay Model and Aggregating Discovery Service Model (ADS). We also briefly mention Secure Discovery Service (SecDS) Model, which is an improved version of Directory Service Model with a secure attribute-based access control mechanism. Then, we analyze the strengths and limitations of these models, by comparing based on non-functional features such as data ownership, confidentiality, business relationship independence, availability, reliability, implementation complexity, visibility, and scalability. From the analysis results, we have a better understanding of which model is more suitable in what kinds of situations or scenarios. Moreover, we suggest possible improvements and identify possible future add-on applications to SecDS model in the paper.
Highlights
Chain is a process of transforming natural resources or raw materials into finished goods, by passing through suppliers, manufacturers, wholesalers, retailers, customers and other supply chain partners [1]
Publishing operation is for Electronic Product Code (EPC) Information Services (EPCIS) to publish their information on EPCIS whereas querying operation is for supply chain users, who want to find published EPCIS addresses
Many companies, who consider their possession of items as confidential or sensitive information, do not want to expose their EPCIS addresses and are reluctant to publish them on Electronic Product Code Discovery Service (EPCDS)
Summary
Chain is a process of transforming natural resources or raw materials into finished goods, by passing through suppliers, manufacturers, wholesalers, retailers, customers and other supply chain partners [1]. The manufacturers predict the customer demand from wholesalers’ orders, while wholesalers predict the customer demand from the retailers’ orders This lack of information transparency can lead to “bullwhip effect” where each upstream supply chain participant observes greater demand variation and greater need for safety stocks, bearing greater costs [2]. EPCglobal organization [3], which is responsible for standardization of Electronic Product Code (EPC) technology [4], created EPCglobal Network [5] for sharing RFID information. EPCglobal Network is implemented, using standards from EPCglobal Architecture Framework [6]. It has four components, namely Object Naming Service (ONS), EPC Discovery Services (EPCDS), EPC Information Services (EPCIS) and EPC Security Services [5].
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