Research On Location Privacy Protection Based On Mobile Services

Along with the rapid growth of mobile Internet, especially in the mobile terminal equipment on popular, mobile application has become more and more rich, changes people daily life. so, LBS(location-based services) more and more get the favour of the public. Users send location services is the location of the data, a service request, get the application service. It is the user’s information of privacy data in the process, once the information leakage happens, will be a serious threat to the user’s personal privacy. Location privacy protection is provided in the mobile users to send personal location information for application service, how to ensure that as far as possible without affecting the quality of service, at the same time, effective protection for the user’s location information provided.First, this thesis introduces many researches in present situation of location service protection at home and abroad detail, analyzes the system structure and the location service technology, points out the advantages and disadvantages of each. This thesis has carried on the thorough comparison of K anonymity algorithm for several important location privacy protection model, especially on the casper cloak model algorithm features, detailed analysis of discussions,improve and change the deficiency of the model; In the selection process of positions in the algorithm for the model of the grid adjacent sibling nodes, introduces mobile user movement trend parameter will get more rigorous analysis, considers the characteristics of mobile user mobility in real life fully. Moreover, the first brother node concept of the location added in the data structure, provides high efficiency for system model on running time. Area to finally get anonymous position, with redundancy optimization processing strategy, realize more precise in the anonymous area on the premise of guarantee related degree of privacy, provides the effective quality assurance for higher position service later.This thesis in view of the above research contents and relevant improvement. On the one hand, verify and analysis through experiment, show the improved model algorithm. Not only it can realize the condition of anonymity successfully, and the algorithm in the selection process of brothers node is more efficient, eventually anonymous area of precision is also higher; On the other hand in the related application development, realize some service based of location, at the same time, complete the purpose of personal privacy protection, prove the feasibility and effectiveness of the improved model...