# Resource Management and Secure Data Exchange for Mobile Sensors Using Ethereum Blockchain
## 2 Related Work
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Authors** & **Problem** & **Methods** & **Benefits** & **Limitation** \\ \hline [PERSON] et al. [28] & Trust management in SIOT (Social Internet of Things) & Trust monitoring-based model integrated with blockchain & Resistant to certain trusted-based attacks; enhanced trustworthiness in SIOT environments & Limited protection against complex cyber threats; scalability concerns \\ [PERSON] et al. [29] & Node authentication in WSNs & Asymmetric encryption keys, trust evaluation model for energy-aware security & Reduced energy consumption; adaptable to various IoT scenarios & Higher memory dependency limits scalability in resource-constrained environments \\ [PERSON] et al. [31] & Selection of trusted resources in smart marketplaces & Blockchain-based trust evaluation model & Significant reduction in latency; improved transaction efficiency & Inability to detect complex threat patterns, which may affect long-term reliability \\ [PERSON] [32], [PERSON] et al. [33], [PERSON] et al. [34], [PERSON] et al. [35], and [PERSON] et al. [36] & Trust management in SDO & Blockchain-based trust management design & Implementation; enhances transparency and security in supply chains & Resource-intensive, leading to potential inefficiencies in large-scale deployments \\ [PERSON] et al. [37] & Proof-of-Work in wireless Networks & Non-orthogonal multiple access (NOMA) combined with blockchain & Significant energy savings; improved network & Less resilient to advanced persistent threats and DDoS \\ [PERSON] et al. [38] & Complex network structure and identity management & Identity storage via blockchain and Merkle tree, two-way authentication & Strenghens storage security; resists both internal and external attacks & Specific to particular network systems; lacks generalizability across different architectures \\ [PERSON] et al. [39] & Privacy and trust in IoT networks & Permission-based blockchain with homomorphic encryption & Optimizes data storage and retrieval; improves privacy in IoT data exchanges & Non-scalable performance; challenges in adapting to rapidly growing networks \\ [PERSON] et al. [40], [PERSON] et al. [41], and [PERSON] et al. [42] & Node authentication in IoT & Blockchain-based authentication schemes & scenarios; enhances security in sensor networks & Design not optimized for dynamic threat patterns; security in sensor may struggle with evolving networks & \\ [PERSON] et al. [43] & Blockchain-enabled smart home gateway architecture & High accuracy and fast response time; prevents data forgery with multiple nodes & High resource consumption, particularly in large-scale networks with multiple nodes & Blockchain-enabled smart home gateway architecture \\ [PERSON] et al. [44] & Task offloading efficiency in vehicular networks & Blockchain and bio-inspired algorithms for task offloading & Minimizes network cost; reduces latency in edge computing & Limited resistance to cyber threats; potential security vulnerabilities \\ [PERSON] et al. [46] & IoT data security and storage & Hyperledger fabric blockchain with decentralized storage & Faster response time; reduced CPU; consumption; efficient data management & Sub-optimal latency performance in high-demand scenarios \\ [PERSON] and [PERSON] [47] & Task offloading for mobile users & Offloading mechanism using search optimization and genetic algorithms & Reduces latency and energy consumption by dynamic cyber threats; security concerns remain \\ [PERSON] et al. [48] & Predictive supply chain management & Blockchain and attention-based gated recurrent units & Better predictive accuracy; enhanced supply chain management & Higher resource utilization, which may affect system scalability \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Comparative summary of existing studies. Hence, various approaches exist in the existing literature where blockchain has been considered for simultaneously addressing smart resource management and data security.