针对SDGPSN(Scalable and D istributed GPS free Positioning for Sensor Networks)算法通信开销过大的问题,通过改进其局部坐标系和全局坐标系构建过程,提出了一种新的相对定位算法。仿真实验结果显示,改进后的算法较之原算法具有更...针对SDGPSN(Scalable and D istributed GPS free Positioning for Sensor Networks)算法通信开销过大的问题,通过改进其局部坐标系和全局坐标系构建过程,提出了一种新的相对定位算法。仿真实验结果显示,改进后的算法较之原算法具有更小的通信开销,使之更适于节点移动频率较低的无线传感器网络的节点定位应用。展开更多
The rapid development of location-based service(LBS) drives one special kind of LBS, in which the service provider verifies user location before providing services. In distributed location proof generating schemes, pr...The rapid development of location-based service(LBS) drives one special kind of LBS, in which the service provider verifies user location before providing services. In distributed location proof generating schemes, preventing users from colluding with each other to create fake location proofs and protecting user's location privacy at the same time, are the main technical challenges to bring this kind of LBS into practical. Existing solutions tackle these challenges with low collusion-detecting efficiency and defected collusion-detecting method. We proposed two novel location proof generating schemes, which inversely utilized a secure secret-sharing scheme and a pseudonym scheme to settle these shortcomings. Our proposed solution resists and detects user collusion attacks in a more efficient and correct way. Meanwhile, we achieve a higher level of location privacy than that of previous work. The correctness and efficiency of our proposed solution is testified by intensive security analysis, performance analysis, as well as experiments and simulation results.展开更多
文摘针对SDGPSN(Scalable and D istributed GPS free Positioning for Sensor Networks)算法通信开销过大的问题,通过改进其局部坐标系和全局坐标系构建过程,提出了一种新的相对定位算法。仿真实验结果显示,改进后的算法较之原算法具有更小的通信开销,使之更适于节点移动频率较低的无线传感器网络的节点定位应用。
基金supported by the National Natural Science Foundation of China(Grant No.41371402)the National Basic Research Program of China("973"Program)(Grant No.2011CB302306)the Fundamental Research Funds for the Central University(Grant No.2015211020201 and No.211274230)
文摘The rapid development of location-based service(LBS) drives one special kind of LBS, in which the service provider verifies user location before providing services. In distributed location proof generating schemes, preventing users from colluding with each other to create fake location proofs and protecting user's location privacy at the same time, are the main technical challenges to bring this kind of LBS into practical. Existing solutions tackle these challenges with low collusion-detecting efficiency and defected collusion-detecting method. We proposed two novel location proof generating schemes, which inversely utilized a secure secret-sharing scheme and a pseudonym scheme to settle these shortcomings. Our proposed solution resists and detects user collusion attacks in a more efficient and correct way. Meanwhile, we achieve a higher level of location privacy than that of previous work. The correctness and efficiency of our proposed solution is testified by intensive security analysis, performance analysis, as well as experiments and simulation results.
