CAJ | 학술논문

针对传统匿名方法存在查询结果不精确、通信开销大等不足，提出一种新的位置匿名方法，并为匿名模型提出了基于熵的隐私度量方法。相对于传统的匿名方法而言，该方法将匿名区域分裂为几个分散的子匿名区域，并用子匿名区域的中心位置代替子匿名内用户的真实位置向LBS服务器发起查询。该方法能使用户在保护自身隐私的同时相对地得出自己的精确查询结果。理论分析表明，该方法能将匿名器与LBS服务器之间的通信量降到最低，提高查询服务的质量。在用户稀少的场景下，方法的优越性更加明显。
침대전통닉명방법존재사순결과불정학、통신개소대등불족，제출일충신적위치닉명방법，병위닉명모형제출료기우적적은사도량방법。상대우전통적닉명방법이언，해방법장닉명구역분렬위궤개분산적자닉명구역，병용자닉명구역적중심위치대체자닉명내용호적진실위치향LBS복무기발기사순。해방법능사용호재보호자신은사적동시상대지득출자기적정학사순결과。이론분석표명，해방법능장닉명기여LBS복무기지간적통신량강도최저，제고사순복무적질량。재용호희소적장경하，방법적우월성경가명현。
In view of traditional anonymous scheme exists imprecise query results and communication overhead defect, a new kind of location anonymity scheme is proposed, and the privacy measurement method based on entropy for the a-nonymous model is put forward.Compared with the traditional anonymous scheme, this one divides single cloaking re-gion into several sub cloaking regions, and replace the users′real position with the central location of sub cloaking re-gion which the users belong to, then initiate a query from LBS server.This scheme can ensure users to protect their own privacy and achieve accurate query results relatively.Theorectical analysis shows that the scheme can minimize the com-munication traffic between anonymous device and LBS server, and improve the quality of query service.In the spare user scenario, the superiority of the scheme is more obvious.