Measuring a Distance between Things with Improved Accuracy. - Hosik Cho; Jianxun Ji; Zili Chen; Hyuncheol Park; Wonsuk Lee (ANT/SEIT, 2015)

An Energy-Efficient and Robust Indoor-Outdoor Detection Method Based on Cell Identity Map. - Zhongwei Liu; Hyuncheol Park; Zili Chen; Hosik Cho (FNC/MobiSPC, 2015)

Accurate Distance Estimation between Things: A Self-correcting Approach. - Hosik Cho; Jianxun Ji; Zili Chen; Hyuncheol Park; Wonsuk Lee (Open J. Internet Things, 2015)