2020/05/10 by Cong Tien Nguyen, Nguyen, Cong T., Diep N. Nguyen +11 · 1 citation
Business, Management and Accounting · Computer Science · Decision Sciences · #Auction Theory and Applications #Blockchain Technology Applications and Security #Cryptography and Security (cs.CR) #FOS: Computer and information sciences #FinTech, Crowdfunding, Digital Finance
paper · pdf · doi:10.48550/arxiv.2005.04571
openalex publication_date 2020/05/10 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
Mobile service providers (MSPs) are particularly vulnerable to roaming\nfrauds, especially ones that exploit the long delay in the data exchange\nprocess of the contemporary roaming management systems, causing multi-billion\ndollars loss each year. In this paper, we introduce BlockRoam, a novel\nblockchain-based roaming management system that provides an efficient data\nexchange platform among MSPs and mobile subscribers. Utilizing the\nProof-of-Stake (PoS) consensus mechanism and smart contracts, BlockRoam can\nsignificantly shorten the information exchanging delay, thereby addressing the\nroaming fraud problems. Through intensive analysis, we show that the security\nand performance of such PoS-based blockchain network can be further enhanced by\nincentivizing more users (e.g., subscribers) to participate in the network.\nMoreover, users in such networks often join stake pools (e.g., formed by MSPs)\nto increase their profits. Therefore, we develop an economic model based on\nStackelberg game to jointly maximize the profits of the network users and the\nstake pool, thereby encouraging user participation. We also propose an\neffective method to guarantee the uniqueness of this game's equilibrium. The\nperformance evaluations show that the proposed economic model helps the MSPs to\nearn additional profits, attracts more investment to the blockchain network,\nand enhances the network's security and performance.\n