Table 2.

Privacy-preserving solutions in edge computing-based healthcare and the associated challenges.

Privacy-preserving edge computing based healthcare solutions	References	Challenges
Anonymization techniques such as differential privacy	[23, 24]	Complexity due to decentralization
Hardware level solution (SGX)	[26]	High cost
Blockchain technology	[13, 38] [26, 27]	Complex decentralization and high overheads
Data hiding mechanism (PRM)	[5]	Intercommunication complexity
Encryption schemes	[7, 14, 25] [5, 37]	High cost
Network function virtualization (NFV)	[11]	Complexity introduced by heterogeneity