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Practical approximate indoor nearest neighbour locating with crowdsourced RSSIs

Published: 01 May 2021 Publication History

Abstract

In the indoor space, finding the nearest neighbour is of great importance in location-based services. Received Signal Strength Indication (RSSI) has received much attention due to its simplicity and compatibility with existing hardware, which has been widely used for indoor localization. Existing indoor nearest neighbour search methods are based on the real walking distance, which need ground survey and much labor work to measure many real distances. Crowdsourcing is a low-cost and efficient way to collect the RSSI of indoor space without expert surveyors and designated coordinates for RSSI collection points. The crowdsourced RSSIs can reflect the location of indoor objects and RSSI-based localization method is the simplistic method as it needs low hardware requirements, low deployment cost and no survey indoor distance. So we study how to search the nearest neighbour of indoor objects with crowdsourced RSSIs. To address this problem, we propose a graph with interval weights, called I-graph, which can connect the RSSIs and represent the topology of indoor space. We also construct a search tree index D-tree, which can index the graph with interval weights and search the nearest neighbour objects efficiently. We also propose a novel distance metric for RSSI and study the relationship between the RSSI distance and the indoor distance. To locate nearest neighbour of indoor objects with crowdsourced RSSIs, we devise efficient search algorithms and pruning strategies for computing the nearest neighbour query. We demonstrate the efficiency and effectiveness of the proposed solution through extensive experiments with two real data sets.

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Cited By

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  • (2023)Time-constrained indoor keyword-aware routing: foundations and extensionsGeoinformatica10.1007/s10707-023-00489-227:3(375-426)Online publication date: 1-Jul-2023
  • (2022)Improvement of triangle centroid localization algorithm based on PIT criterion (ITCL-PIT) for WSNsEURASIP Journal on Wireless Communications and Networking10.1186/s13638-022-02109-32022:1Online publication date: 21-Mar-2022
  • (2021)Data Cleaning for Indoor Crowdsourced RSSI SequencesWeb and Big Data10.1007/978-3-030-85899-5_20(267-275)Online publication date: 23-Aug-2021

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    Information

    Published In

    cover image World Wide Web
    World Wide Web  Volume 24, Issue 3
    May 2021
    300 pages

    Publisher

    Kluwer Academic Publishers

    United States

    Publication History

    Published: 01 May 2021
    Accepted: 15 February 2021
    Revision received: 02 December 2020
    Received: 29 June 2020

    Author Tags

    1. Indoor Localization
    2. Nearest Neighbour
    3. RSSI sequences
    4. Crowdsourcing

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    View all
    • (2023)Time-constrained indoor keyword-aware routing: foundations and extensionsGeoinformatica10.1007/s10707-023-00489-227:3(375-426)Online publication date: 1-Jul-2023
    • (2022)Improvement of triangle centroid localization algorithm based on PIT criterion (ITCL-PIT) for WSNsEURASIP Journal on Wireless Communications and Networking10.1186/s13638-022-02109-32022:1Online publication date: 21-Mar-2022
    • (2021)Data Cleaning for Indoor Crowdsourced RSSI SequencesWeb and Big Data10.1007/978-3-030-85899-5_20(267-275)Online publication date: 23-Aug-2021

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