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  • Energy-efficient Dual-codebook–based Backscatter Communications for Wireless Powered Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-11-17
    Yufan Zhang; Ertao Li; Yi-Hua Zhu

    The common backscatter communications (ComBC), widely applied in wireless powered networks such as the RFID systems, exhibit the shortcoming that only a few bits are backscattered at a time due to energy limitation. It is significant to improve energy efficiency in backscatter communications so more data can be delivered within one backscatter. In this article, the energy-efficient dual-codebook based

    更新日期:2020-11-17
  • SDCN: Sensory Data-Centric Networking for Building the Sensing Layer of IoT
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-11-11
    Liang Liu; Bo Chen; Huadong Ma

    Building an open global sensing layer is critical for the Internet of Things (IoT). In this article, we present a Sensory Data-Centric Networking (SDCN) architecture for inter-networking two main networked sensing systems in IoT—wireless sensor networks and mobile sensing networks. Specifically, the proposed SDCN is a systematic solution including NDNs for sensor nodes in the Zigbee network, NDNm for

    更新日期:2020-11-12
  • Reactive Jamming and Attack Mitigation over Cross-Technology Communication Links
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-11-05
    Gonglong Chen; Wei Dong

    Recently, Cross-Technology Communication (CTC), allowing the direct communication among heterogeneous devices with incompatible physical layers, has attracted much research attention. Many efficient CTC protocols have been proposed to demonstrate its promise in IoT applications. However, the applications built upon CTC will be significantly impaired when CTC suffers from malicious attacks such as jamming

    更新日期:2020-11-06
  • MORE: Multi-node Mobile Charging Scheduling for Deadline Constraints
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-11-05
    Panlong Yang; Tao Wu; Haipeng Dai; Xunpeng Rao; Xiaoyu Wang; Peng-Jun Wan; Xin He

    Due to the merit without requiring charging cable, wireless power transfer technology has drawn rising attention as a new method to replenish energy for Wireless Rechargeable Sensor Networks. In this article, we study the mobile charger scheduling problem for multi-node recharging with deadline constraints. Our target is to maximize the overall effective charging utility and minimize the traveling

    更新日期:2020-11-06
  • Dynamic Edge-coded Protocols for Low-power, Device-to-device Communication
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-11-05
    Shahzad Muzaffar; Ibrahim (Abe) M. Elfadel

    Clock and Data Recovery (CDR) has been a foundational receiver component in serial communications. Yet this component is known to add significant design complexity to the receiver and to consume significant resources in area and power. In the resource-limited world of constrained IoT nodes, the need of including CDR in the communication link is being re-assessed and new techniques for achieving reliable

    更新日期:2020-11-06
  • A Survey on Energy-Efficient Strategies in Static Wireless Sensor Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-10-12
    Deyu Lin; Quan Wang; Weidong Min; Jianfeng Xu; Zhiqiang Zhang

    A comprehensive analysis on the energy-efficient strategy in static Wireless Sensor Networks (WSNs) that are not equipped with any energy harvesting modules is conducted in this article. First, a novel generic mathematical definition of Energy Efficiency (EE) is proposed, which takes the acquisition rate of valid data, the total energy consumption, and the network lifetime of WSNs into consideration

    更新日期:2020-10-12
  • Urban Scale Trade Area Characterization for Commercial Districts with Cellular Footprints
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-30
    Yi Zhao; Zimu Zhou; Wang Xu; Tongtong Liu; Zheng Yang

    Understanding customer mobility patterns to commercial districts is crucial for urban planning, facility management, and business strategies. Trade areas are a widely applied measure to quantify where the visitors are from. Traditional trade area analysis is limited to small-scale or store-level studies, because information such as visits to competitor commercial entities and place of residence is

    更新日期:2020-10-02
  • TinyLink: A Holistic System for Rapid Development of IoT Applications
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-27
    Wei Dong; Borui Li; Gaoyang Guan; Zhihao Cheng; Jiadong Zhang; Yi Gao

    Rapid development is essential for IoT (Internet of Things) application developers to obtain first-mover advantages and reduce the development cost. In this article, we present TinyLink, a holistic system for rapid development of IoT applications. The key idea of TinyLink is to use a top-down approach for designing both the hardware and the software of IoT applications. Developers write the application

    更新日期:2020-09-28
  • Dynamic Buffer Sizing for Out-of-order Event Compensation for Time-sensitive Applications
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-24
    Wolfgang Weiss; Víctor J. Expósito Jiménez; Herwig Zeiner

    Today’s sensor network implementations often comprise various types of nodes connected with different types of networks. These and various other aspects influence the delay of transmitting data and therefore of out-of-order data occurrences. This turns into a crucial problem in time-sensitive applications where data must be processed promptly and decisions must be reliable. In this article, we research

    更新日期:2020-09-25
  • dWatch: A Reliable and Low-Power Drowsiness Detection System for Drivers Based on Mobile Devices
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-16
    Tianzhang Xing; Qing Wang; Chase Q. Wu; Wei Xi; Xiaojiang Chen

    Drowsiness detection is critical to driver safety, considering thousands of deaths caused by drowsy driving annually. Professional equipment is capable of providing high detection accuracy, but the high cost limits their applications in practice. The use of mobile devices such as smart watches and smart phones holds the promise of providing a more convenient, practical, non-invasive method for drowsiness

    更新日期:2020-09-16
  • Ultra-wideband Concurrent Ranging
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-16
    Pablo Corbalán; Gian Pietro Picco

    We propose a novel concurrent ranging technique for distance estimation with ultra-wideband (UWB) radios. Conventional schemes assume that the necessary packet exchanges occur in isolation to avoid collisions. Concurrent ranging relies on the overlapping of replies from nearby responders to the same ranging request issued by an initiator node. As UWB transmissions rely on short pulses, the individual

    更新日期:2020-09-16
  • Pushing the Limits of Transmission Concurrency for Low Power Wireless Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-10
    Daibo Liu; Zhichao Cao; Mengshu Hou; Huigui Rong; Hongbo Jiang

    Concurrent transmission (CT) has been widely adopted to optimize the throughput of various data transmissions in wireless networks, such as bulk data dissemination and high-rate data collection. In CT, besides the possible data frame collision at receivers, we observe that acknowledgment frame (ACK) collision at senders can also significantly diminish concurrency opportunities. In this article, to

    更新日期:2020-09-10
  • DAML: Practical Secure Protocol for Data Aggregation Based on Machine Learning
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-05
    Ping Zhao; Jiaxin Sun; Guanglin Zhang

    Data aggregation based on machine learning (ML), in mobile edge computing, allows participants to send ephemeral parameter updates of local ML on their private data instead of the exact data to the untrusted aggregator. However, it still enables the untrusted aggregator to reconstruct participants’ private data, although parameter updates contain significantly less information than the private data

    更新日期:2020-09-07
  • Resilience Bounds of Network Clock Synchronization with Fault Correction
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-05
    Linshan Jiang; Rui Tan; Arvind Easwaran

    Naturally occurring disturbances and malicious attacks can lead to faults in synchronizing the clocks of two network nodes. In this article, we investigate the fundamental resilience bounds of network clock synchronization for a system of N nodes against the peer-to-peer synchronization faults. Our analysis is based on practical synchronization algorithms with time complexity down to O(N3) that attempt

    更新日期:2020-09-07
  • Incentive Mechanisms for Crowdsensing: Motivating Users to Preprocess Data for the Crowdsourcer
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-09-01
    Zhao Liu; Kenli Li; Xu Zhou; Ningbo Zhu; Keqin Li

    Crowdsensing is a popular method that leverages a crowd of sensor users to collect data. For many crowdsensing applications, the collected raw data need to be preprocessed before further analysis, and the preprocessing work is mainly done by the crowdsourcer. However, as the amount of collected data increases, this type of preprocessing approach has many disadvantages. In this article, we construct

    更新日期:2020-09-01
  • A Query Processing Framework for Efficient Network Resource Utilization in Shared Sensor Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-08-25
    Rahul Kumar Verma; K. K. Pattanaik; Sourabh Bharti; Divya Saxena; Jiannong Cao

    Shared Sensor Network (SSN) refers to a scenario where the same sensing and communication resources are shared and queried by multiple Internet applications. Due to the burgeoning growth in Internet applications, multiple application queries can exhibit overlapping in their functional requirements, such as the region of interest, sensing attributes, and sensing time duration. This overlapping results

    更新日期:2020-08-26
  • Distributed Reliable and Energy-Efficient Scheduling for LR-WPANs
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-08-25
    Tim Van Der Lee; Georgios Exarchakos; Sonia Heemstra De Groot

    Pervasiveness of wireless networks drives the heterogeneity and density of devices in a vast diversity of environments. To achieve high reliability and low energy consumption while enabling pervasiveness is inherently a resource allocation problem. In low-rate wireless personal area networks, multi-frequency time-division multiple access methods are identified as compelling solutions to resource allocation

    更新日期:2020-08-26
  • RF-AMOC: Human-related RFID Tag Movement Identification in Access Management of Carries
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-08-25
    Shaoyi Zhu; Weiqing Huang; Chenggang Jia; Siye Wang; Bowen Li; Yanfang Zhang

    The use of radio-frequency identification (RFID) technology in supply chain has been a fairly mature application in recent years, which can be extended to the field of carrier management for the inventory and access control of sensitive files and mobile storage medium. To address the inherent defects of false readings of RFID, we present RF-AMOC, a tag movement identification system that leverages

    更新日期:2020-08-26
  • Identifying Child Users via Touchscreen Interactions
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-07-28
    Yushi Cheng; Xiaoyu Ji; Xiaopeng Li; Tianchen Zhang; Sharaf Malebary; Xianshan Qu; Wenyuan Xu

    With the proliferation of smart devices, children can be easily exposed to violent or adult-only content on the Internet. Without any precaution, the premature and unsupervised use of smart devices can be harmful to both children and their parents. Thus, it is critical to employ parent patrol mechanisms such that children are restricted to child-friendly content only. A successful parent patrol strategy

    更新日期:2020-08-26
  • ACES: Automatic Configuration of Energy Harvesting Sensors with Reinforcement Learning
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-07-31
    Francesco Fraternali; Bharathan Balaji; Yuvraj Agarwal; Rajesh K. Gupta

    Many modern smart building applications are supported by wireless sensors to sense physical parameters, given the flexibility they offer and the reduced cost of deployment. However, most wireless sensors are powered by batteries today, and large deployments are inhibited by the requirement of periodic battery replacement. Energy harvesting sensors provide an attractive alternative, but they need to

    更新日期:2020-08-26
  • iSleep: A Smartphone System for Unobtrusive Sleep Quality Monitoring
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-07-21
    Xiangmao Chang; Cheng Peng; Guoliang Xing; Tian Hao; Gang Zhou

    The quality of sleep is an important factor in maintaining a healthy life style. A great deal of work has been done for designing sleep monitoring systems. However, most of existing solutions bring invasion to users more or less due to the exploration of the accelerometer sensor inside the device. This article presents iSleep—a practical system to monitor people’s sleep quality using off-the-shelf

    更新日期:2020-08-18
  • Joint Modelling of Cyber Activities and Physical Context to Improve Prediction of Visitor Behaviors
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-08-13
    Manpreet Kaur; Flora D. Salim; Yongli Ren; Jeffrey Chan; Martin Tomko; Mark Sanderson

    This article investigates the cyber-physical behavior of users in a large indoor shopping mall by leveraging anonymized (opt in) Wi-Fi association and browsing logs recorded by the mall operators. Our analysis shows that many users exhibit a high correlation between their cyber activities and their physical context. To find this correlation,propose a mechanism to semantically label a physical space

    更新日期:2020-08-18
  • SCANet: Sensor-based Continuous Authentication with Two-stream Convolutional Neural Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-07-21
    Yantao Li; Hailong Hu; Zhangqian Zhu; Gang Zhou

    Continuous authentication monitors the security of a system throughout the login session on mobile devices. In this article, we present SCANet, a two-stream convolutional neural network--based continuous authentication system that leverages the accelerometer and gyroscope on smartphones to monitor users’ behavioral patterns. We are among the first to use two streams of data—frequency domain data and

    更新日期:2020-08-18
  • Quality-aware Online Task Assignment in Mobile Crowdsourcing
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-07-21
    Xin Miao; Yanrong Kang; Qiang Ma; Kebin Liu; Lei Chen

    In recent years, mobile crowdsourcing has emerged as a powerful computation paradigm to harness human power to perform spatial tasks such as collecting real-time traffic information and checking product prices in a specific supermarket. A fundamental problem of mobile crowdsourcing is: When both tasks and crowd workers appear in the platforms dynamically, how to assign an appropriate set of tasks to

    更新日期:2020-08-18
  • QoS-Aware VNF Placement and Service Chaining for IoT Applications in Multi-Tier Mobile Edge Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-06-01
    Zichuan Xu; Zhiheng Zhang; Weifa Liang; Qiufen Xia; Omer Rana; Guowei Wu

    Mobile edge computing and network function virtualization (NFV) paradigms enable new flexibility and possibilities of the deployment of extreme low-latency services for Internet-of-Things (IoT) applications within the proximity of their users. However, this poses great challenges to find optimal placements of virtualized network functions (VNFs) for data processing requests of IoT applications in a

    更新日期:2020-06-01
  • CoUAS: Enable Cooperation for Unmanned Aerial Systems
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-06-01
    Ziyao Huang; Weiwei Wu; Feng Shan; Yuxin Bian; Kejie Lu; Zhenjiang Li; Jianping Wang; Jin Wang

    In the past decade, unmanned aircraft systems (UASs) have been widely used in various civilian applications, most of which involve only a single unmanned aerial vehicle (UAV). In the near future, more and more UAS applications will be facilitated by the cooperation of multiple UAVs. In such applications, it is desirable to utilize a general control platform for cooperative UAVs. However, existing open-source

    更新日期:2020-06-01
  • Latency-efficient Data Collection Scheduling in Battery-free Wireless Sensor Networks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-05-22
    Tongxin Zhu; Jianzhong Li; Hong Gao; Yingshu Li

    The lifetime of battery-powered Wireless Sensor Networks (WSNs) are limited by the batteries equipped in sensors. The appearance of Battery-free Wireless Sensor Networks (BF-WSNs) breaks through this limitation, in which battery-free sensors harvest energy from sustainable but uncontrollable energy sources in ambient environment, such as solar power, wind power, radio frequency signal power, and so

    更新日期:2020-05-22
  • A Prospect Theoretic Approach for Trust Management in IoT Networks Under Manipulation Attacks
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-05-22
    Mehrdad Salimitari; Shameek Bhattacharjee; Mainak Chatterjee; Yaser P. Fallah

    As Internet of Things (IoT) and Cyber-Physical systems become more ubiquitous in our daily lives, it necessitates the capability to measure the trustworthiness of the aggregate data from such systems to make fair decisions. However, the interpretation of trustworthiness is contextual and varies according to the risk tolerance attitude of the concerned application. In addition, there exist varying levels

    更新日期:2020-05-22
  • Time-efficient Missing Tag Identification in an Open RFID System
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-05-10
    Yanyan Wang; Jia Liu; Xia Wang; Xingyu Chen; Yingli Yan; Lijun Chen

    Radio Frequency IDentification (RFID) technology has been widely used in missing tag identification to reduce the economic loss caused by theft. Although many advanced works have been proposed, they cannot work properly in an open RFID system with unexpected tags. That is because the unexpected tags may reply to the reader when it is the missing tags’ turn, such that the replies are mistakenly treated

    更新日期:2020-05-10
  • OPTICS: OPTimizing Irrigation Control at Scale
    ACM Trans. Sens. Netw. (IF 2.469) Pub Date : 2020-05-10
    Daniel A. Winkler; Miguel Á. Carreira-Perpiñán; Alberto E. Cerpa

    Lawns, also known as turf, cover an estimated 128,000 km2 in North America alone, with landscape requirements representing 30% of freshwater consumed in the residential domain. With this consumption comes a large amount of environmental, economic, and social incentive to make turf irrigation systems as efficient as possible. Recent work introduced the concept of distributed control in irrigation systems

    更新日期:2020-05-10
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