摘要
针对数据库驱动的认知无线电网络(Cognitive Radio Network,CRN)中存在的位置隐私泄露问题,文章提出一种基于SpaceTwist的隐私保护方案。该方案借助查询服务器,以锚点为中心向数据库展开增量近邻查询,以获得锚点周围的主用户可用信道。数据库将查询结果返回给查询服务器,查询服务器根据最大传输功率公式判断次用户周围的可用信道,并根据次用户允许发送的功率进行信道分配,使次用户接入服务质量最好的信道。安全分析表明,文章方案中次用户无需与数据库共享位置,从而很好地保护了次用户的位置隐私。性能分析表明,与现有其他方案相比,文章方案在通信开销和次用户的计算开销方面具有明显优势。
Aiming at the problem of location privacy leakage in database-driven cognitive radio network(CRN), this paper proposes a privacy-preserving scheme based on SpaceTwist.With the help of query server, the scheme expands incremental nearest neighbor query to database centered on anchor to obtain the available channels for primary users around anchor.The database returns the query results to the query server. The query server judges the available channels around the secondary user according to the formula of maximum transmission power,and allocates the channels according to the power allowed by the secondary user, so that the secondary user can access the channel with the best service quality. Security analysis shows that the secondary user does not need to share location with the database in this scheme, which well protects the location privacy of secondary user. Performance analysis shows that compared with other existing schemes, the proposed scheme has obvious advantages in communication overhead and computing overhead of secondary user.
作者
许力
朱瑞
曾雅丽
XU Li;ZHU Rui;ZENG Yali(College of Mathematics and Informatics, Fujian Normal University, Fuzhou Fujian 350007, China;Fujian Provincial Key Laboratory of Network Security and Cryptology, Fuzhou Fujian 350007, China)
出处
《信息网络安全》
CSCD
北大核心
2019年第2期18-27,共10页
Netinfo Security
基金
国家自然科学基金面上资助项目[61771140]
国家自然科学基金海峡联合基金重点资助项目[U1405255]
福州市科技重大项目[榕科(2017)325号]
