بهبود توامان قابليت اطمينان و سرباره ي سيستم زنجيره ي قالب مبتني بر اثبات رأي درشبكه هاي بي سيم

The use of blockchain for IoT (Internet of Things) equipment offers numerous advantages, including the management of multiple nodes, data security, and the possibility of data validation. However, due to the large number of transactions, as well as storage, power, and computational limitations of IoT devices, there are still challenges in deploying IoT applications within blockchain systems. In this thesis, our aim is to address the key challenge of maintaining efficiency in the face of a high volume of transactions. To date, various solutions have been proposed, including the IOTA network and different types of BFT-based (Byzantine Fault Tolerance) consensus mechanisms. One of the best solutions is a consensus mechanism called Proof of Vote (POV), which is applicable despite the additional overhead. While establishing a distinct security identity for network participants, this mechanism enables the sending and verification of blocks based on the voting of entities anonymously and without reliance on a third party. Despite the stated benefits of POV, the number of messages exchanged for voting is very high, and efficiency decreases given the unreliable nature of wireless networks and the number of transactions in the IoT network. Therefore, in this thesis, we present a new solution called Geographic-based Proof of Vote (G-POV) to reduce the number of messages in the application of this protocol in the IoT network. This solution reduces the number of messages needed to reach consensus by utilizing fixed and reliable nodes in clusters with fixed geographical locations. Furthermore, opportunistic routing methods have been exploited to increase routing reliability. The proposed solution has been eva‎luated in terms of improvement and security requirements.

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