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WLAN Device-free passive DfP indoor localization is an emerging technology enabling the localization of entities that do not carry any devices nor participate actively in the localization process using the already installed wireless…

Networking and Internet Architecture · Computer Science 2012-02-14 Ahmed E. Kosba , Ahmed Saeed , Moustafa Youssef

Device-Free Localization (DFL) employs passive radio techniques capable to detect and locate people without imposing them to wear any electronic device. By exploiting the Integrated Sensing and Communication paradigm, DFL networks employ…

Signal Processing · Electrical Eng. & Systems 2024-05-17 Vittorio Rampa , Federica Fieramosca , Stefano Savazzi , Michele D'Amico

Device-Free Localization (DFL) is a passive radio method able to detect, estimate, and localize targets (e.g., human or other obstacles) that do not need to carry any electronic device. According to the Integrated Sensing And Communication…

Signal Processing · Electrical Eng. & Systems 2025-06-10 Vittorio Rampa , Federica Fieramosca , Stefano Savazzi , Michele D'Amico

Location-based services (LBS) are witnessing a rise in popularity owing to their key features of delivering powerful and personalized digital experiences. The recent developments in wireless sensing techniques make the realization of…

Signal Processing · Electrical Eng. & Systems 2023-05-30 Osamah A. Abdullah , Hayder Al-Hraishawi , Symeon Chatzinotas

We develop novel methods for device-free localization (DFL) using transceivers in motion. Such localization technologies are useful in various cross-layer applications/protocols including those that are related to security situations where…

Emerging Technologies · Computer Science 2015-11-23 Peter Hillyard , Dustin Maas , Sriram Premnath , Neal Patwari , Sneha Kasera

RSS-based device-free localization (DFL) monitors changes in the received signal strength (RSS) measured by a network of static wireless nodes to locate people without requiring them to carry or wear any electronic device. Current models…

Networking and Internet Architecture · Computer Science 2013-02-26 Ossi Kaltiokallio , Maurizio Bocca , Neal Patwari

State-of-the-art device-free localization systems infer presence and location of users based on received signal strength measurements of line-of-sight links in wireless networks. In this letter, we propose to enhance device-free…

Signal Processing · Electrical Eng. & Systems 2022-05-11 Martin Schmidhammer , Christian Gentner , Stephan Sand , Uwe-Carsten Fiebig

Device-free (DF) localization in WLANs has been introduced as a value-added service that allows tracking indoor entities that do not carry any devices. Previous work in DF WLAN localization focused on the tracking of a single entity due to…

Networking and Internet Architecture · Computer Science 2012-07-19 Ibrahim Sabek , Moustafa Youssef

In this paper, a comprehensive survey of the pioneer as well as the state of-the-art localization and tracking methods in the wireless sensor networks is presented. Localization is mostly applicable for the static sensor nodes, whereas,…

Networking and Internet Architecture · Computer Science 2017-01-10 Sudhir Kumar , Rajesh M. Hegde

Recently, proposals of human-sensing-based services for cellular and local area networks have brought indoor localization to the attention of several research groups. In response to these stimuli, various Device-Free Localization (DFL)…

Signal Processing · Electrical Eng. & Systems 2024-05-16 Federica Fieramosca , Vittorio Rampa , Michele D'Amico , Stefano Savazzi

Recently, commercial ultra-wideband (UWB) transceivers have enabled not only measuring device-to-device distance but also tracking the position of a pedestrian who does not carry a UWB device. UWB-based device-free localization that does…

Signal Processing · Electrical Eng. & Systems 2025-07-21 Hyun Seok Lee

Advances in wireless localization techniques aiming to exploit context-dependent data has been leading to a growing interest in services able of localizing or tracking targets inside buildings with high accuracy and precision. Hence, the…

Networking and Internet Architecture · Computer Science 2023-12-19 Fabien Geyer , Thomas Multerer , Paulo Mendes , Dominic Schupke

Device-free (DF) localization is an emerging technology that allows the detection and tracking of entities that do not carry any devices nor participate actively in the localization process. Typically, DF systems require a large number of…

Networking and Internet Architecture · Computer Science 2013-08-06 Ibrahim Sabek , Moustafa Youssef

Device-free localization plays an important role in many ubiquitous applications. Among the different technologies proposed, Wi-Fi based technology using commercial devices has attracted much attention due to its low cost, ease of…

Networking and Internet Architecture · Computer Science 2017-07-25 Hao Wang , Daqing Zhang , Kai Niu , Qin Lv , Yuanhuai Liu , Dan Wu , Ruiyang Gao , Bing Xie

We present a human state estimation framework that allows us to estimate the location, and even the activities, of people in an indoor environment without the requirement that they carry a specific devices with them. To achieve this "device…

Signal Processing · Electrical Eng. & Systems 2024-01-12 Saria Al Laham , Bobak H. Baghi , Pierre-Yves Lajoie , Amal Feriani , Sachini Herath , Steve Liu , Gregory Dudek

Wireless sensing is a promising technology for future wireless communication networks to realize various application services. Wireless local area network (WLAN)-based localization approaches using channel state information (CSI) have been…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Osamu Muta , Kazuki Noguchi , Junsuke Izumi , Shunsuke Shimizu , Tomoki Murakami , Shinya Otsuki

Received signal strength based device-free localization has attracted considerable attention in the research society over the past years to locate and track people who are not carrying any electronic device. Typically, the person is…

Networking and Internet Architecture · Computer Science 2014-08-20 Ossi Kaltiokallio , Hüseyin Yiğitler , Riku Jäntti

Device-free localization (DFL) based on the received signal strength (RSS) measurements of radio frequency (RF)links is the method using RSS variation due to the presence of the target to localize the target without attaching any device.…

Networking and Internet Architecture · Computer Science 2015-05-14 Zhenghuan Wang , Heng Liu , Shengxin Xu , Xiangyuan Bu , Jianping An

Device-free localization (DFL) is an emerging technology for estimating the position of a human or object that is not equipped with any electronic tag, nor participate actively in the localization process. Similar to device-based…

Networking and Internet Architecture · Computer Science 2019-09-10 Osama T. Ibrahim , Walid Gomaa , Moustafa Youssef

Device-free localization (DFL) methods use measured changes in the received signal strength (RSS) between many pairs of RF nodes to provide location estimates of a person inside the wireless network. Fundamental challenges for RSS DFL…

Networking and Internet Architecture · Computer Science 2019-01-01 Peter Hillyard , Neal Patwari
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