On Efficient Tree-Based Tag Search in Large-Scale RFID Systems
On Efficient Tree-Based Tag Search in Large-Scale RFID Systems
复制标题
大型 RFID 系统中基于树的高效标签搜索
DOI:
10.1109/tnet.2018.2879979
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发表时间:
2019-02
期刊:
影响因子:
--
通讯作者:
Wang Kehao
中科院分区:
文献类型:
--
作者:
Yu Jihong;Gong Wei;Liu Jiangchuan;Chen Lin;Wang Kehao
Tag search, which is to find a particular set of tags in a radio frequency identification (RFID) system, is a key service in such important Internet-of-Things applications as inventory management. When the system scale is large with a massive number of tags, deterministic search can be prohibitively expensive, and probabilistic search has been advocated, seeking a balance between reliability and time efficiency. Given a failure probability <inline-formula> <tex-math notation="LaTeX">$\frac {1}{\mathcal {O}(K)}$ </tex-math></inline-formula>, where <inline-formula> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula> is the number of tags, state-of-the-art solutions have achieved a time cost of <inline-formula> <tex-math notation="LaTeX">$\mathcal {O}(K \log K)$ </tex-math></inline-formula> through multi-round hashing and verification. Further improvement, however, faces a critical bottleneck of repetitively verifying each individual target tag in each round. In this paper, we present an efficient tree-based tag search (TTS) that approaches <inline-formula> <tex-math notation="LaTeX">$\mathcal {O}(K)$ </tex-math></inline-formula> through batched verification. The key novelty of TTS is to smartly hash multiple tags into each internal tree node and adaptively control the node degrees. It conducts bottom–up search to verify tags group by group with the number of groups decreasing rapidly. Furthermore, we design an enhanced tag search scheme, referred to as TTS+, to overcome the negative impact of asymmetric tag set sizes on time efficiency of TTS. TTS+ first rules out partial ineligible tags with a filtering vector and feeds the shrunk tag sets into TTS. We derive the optimal hash code length and node degrees in TTS to accommodate hash collisions and the optimal filtering vector size to minimize the time cost of TTS+. The superiority of TTS and TTS+ over the state-of-the-art solution is demonstrated through both theoretical analysis and extensive simulations. Specifically, as reliability demand on scales, the time efficiency of TTS+ reaches nearly 2 times at most that of TTS.
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DOI:
10.1145/2465529.2465549
发表时间:
2013-06
期刊:
IEEE/ACM Transactions on Networking
影响因子:
--
作者:
Muhammad Shahzad;A. Liu
通讯作者:
Muhammad Shahzad;A. Liu
DOI:
10.1109/rfid.2014.6810719
发表时间:
2014-04
期刊:
2014 IEEE International Conference on RFID (IEEE RFID)
影响因子:
--
作者:
J. Kaitovic;M. Rupp
通讯作者:
J. Kaitovic;M. Rupp
DOI:
10.1109/infcom.2010.5461946
发表时间:
2010-03
期刊:
2010 Proceedings IEEE INFOCOM
影响因子:
--
作者:
Bo Sheng;Qun A. Li;W. Mao
通讯作者:
Bo Sheng;Qun A. Li;W. Mao
DOI:
10.1109/infocom.2017.8056986
发表时间:
2017-05
期刊:
IEEE INFOCOM 2017 - IEEE Conference on Computer Communications
影响因子:
--
作者:
Min Chen;Jia Liu;Shigang Chen;Yan Qiao;Yuanqing Zheng
通讯作者:
Min Chen;Jia Liu;Shigang Chen;Yan Qiao;Yuanqing Zheng
影响因子:
3.7
作者:
Shahzad, Muhammad;Liu, Alex X.
通讯作者:
Liu, Alex X.