From Centralized Protection to Distributed Edge Collaboration: A Location Difference-Based Privacy-Preserving Framework for Mobile Crowdsensing

Table 1

Classification of privacy-preserving approaches.

Classification	Approach	Reference
Data-oriented protection	Anonymization	[9–13]
	Obfuscation	[14–19]
	Encryption	[20–25]
Edge-assisted protection	Cloud-edge-user	[8, 26–29]