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Classification of proposed approaches | Year | Authors | Strengths | Gaps | Objectives | Field of application | Constraints |
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Trusted traceability query of blockchain | 2021 | Vikaliana et al. [4] | It can quickly summarize and sort out the literature | High complexity | Helps the system to carry out the literature review | Traceability of agricultural enterprise commodities | The limited scope of use |
2019 | Chen et al. [5] | Three main areas of enterprise management, user query, and government supervision are designed to track information flow and system | High cost | The application value hypothesis of NFC technology in the agricultural product supply chain is proposed and verified | Improvement of the agricultural product supply chain | The dataset used is small |
2019 | George et al. [6] | In addition to enhancing the traceability of food (products), the prototype can grade the quality of food consumed by human beings | There are few actual use scenarios | A restaurant prototype using blockchain and product identification to achieve more reliable food traceability is proposed | Restaurants | The system construction is complex |
2021 | Yang et al. [7] | Traceability of product information in product supply chain | It needs to be used with the database | It improves the transparency and credibility of traceability information | Agriculture products | The limited scope of use |
2021 | Liu et al. [8] | Exact distance query | Logistics, transportation, and product traceability | It solves the problems of data leakage and query leakage in data outsourcing | Products | The performance requirements of computing equipment are high |
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RM | 2021 | Munaye et al. [9] | The scheme has good results. In the evaluation task, the evaluation results converge quickly, which is suitable for heterogeneous IoT (IoT) networks with low complexity | The experimental object is relatively single | The resource use of IoT networks is optimized | Wireless networks | The performance requirements of computing equipment are high |
2020 | Chen et al. [10] | Each scheduling slot makes decentralized optimal band allocation and packet scheduling decisions. The performance of the previous algorithm is greatly improved | The experiment is carried out only under ideal conditions | Radio RM | Wireless networks | High performance requirements for computing equipment |
2020 | Yang et al. [11] | The priority experience replay and coordinated learning mechanism are adopted to enable distributed communication links, which improve the network performance and access success probability | The algorithm is tested only under ideal conditions | The radio block joint allocation and transmission power control strategy are optimized | Wireless networks | High requirements for the hardware equipment |
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