Title
Protecting User Trajectory in Location-Based Services.
Abstract
Preserving user location and trajectory privacy while using location-based service (LBS) is an important issue. To address this problem, we first construct three kinds of attack models that can expose a user's trajectory or path while the user is sending continuous queries to a LBS server. Then we propose the k-anonymity trajectory (KAT) algorithm, which is suitable for both single query and continuous queries. Different from existing works, the KAT algorithm selects k-1 dummy locations using the sliding widow based k-anonymity mechanism when the user is making single queries and selects k-1 dummy trajectories using the trajectory selection mechanism for continuous queries. We evaluate and validate the effectiveness of our proposed algorithm by conducting simulations for the single and continuous query scenarios.
Year
DOI
Venue
2015
10.1109/GLOCOM.2015.7417512
IEEE Global Communications Conference
Keywords
Field
DocType
location privacy,trajectory privacy,LBS k-anonymity,single query,continuous queries
Attack model,Algorithm design,Computer science,Computer network,Location-based service,Anonymity,Pound (mass),Trajectory
Conference
ISSN
Citations 
PageRank 
2334-0983
2
0.38
References 
Authors
7
4
Name
Order
Citations
PageRank
Dan Liao128622.88
Hui Li2465.75
Gang Sun346336.98
Vishal Anand443132.49