Dejun Yang

ORCID: 0000-0002-1811-4423
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About
Contact & Profiles
Research Areas
  • Mobile Crowdsensing and Crowdsourcing
  • Auction Theory and Applications
  • Privacy-Preserving Technologies in Data
  • Cooperative Communication and Network Coding
  • Mobile Ad Hoc Networks
  • Human Mobility and Location-Based Analysis
  • Optimization and Search Problems
  • Blockchain Technology Applications and Security
  • Advanced Wireless Network Optimization
  • Advanced MIMO Systems Optimization
  • Software-Defined Networks and 5G
  • Cognitive Radio Networks and Spectrum Sensing
  • Wireless Networks and Protocols
  • Energy Harvesting in Wireless Networks
  • IoT and Edge/Fog Computing
  • Smart Grid Security and Resilience
  • Game Theory and Applications
  • Caching and Content Delivery
  • Smart Grid Energy Management
  • Indoor and Outdoor Localization Technologies
  • Advanced Optical Network Technologies
  • Age of Information Optimization
  • Consumer Market Behavior and Pricing
  • Transportation and Mobility Innovations
  • Cloud Computing and Resource Management

Colorado School of Mines
2015-2024

Tianjin University
2023-2024

Anhui University of Technology
2024

Institute of Electrical and Electronics Engineers
2022

Virginia Tech
2022

Michigan State University
2022

University of Trento
2021

Qatar University
2021

Hong Kong Polytechnic University
2021

St. Francis Xavier University
2021

The Smart Grid, regarded as the next generation power grid, uses two-way flows of electricity and information to create a widely distributed automated energy delivery network. In this article, we survey literature till 2011 on enabling technologies for Grid. We explore three major systems, namely smart infrastructure system, management protection system. also propose possible future directions in each colorred{Specifically, subsystem, communication subsystem.} For various objectives, such...

10.1109/surv.2011.101911.00087 article EN IEEE Communications Surveys & Tutorials 2011-12-12

Mobile phone sensing is a new paradigm which takes advantage of the pervasive smartphones to collect and analyze data beyond scale what was previously possible. In mobile system, platform recruits smartphone users provide service. Existing applications systems lack good incentive mechanisms that can attract more user participation. To address this issue, we design for sensing. We consider two system models: platform-centric model where provides reward shared by participating users,...

10.1145/2348543.2348567 article EN Proceedings of the 28th Annual International Conference on Mobile Computing And Networking 2012-08-22

Smartphones are programmable and equipped with a set of cheap but powerful embedded sensors, such as accelerometer, digital compass, gyroscope, GPS, microphone, camera. These sensors can collectively monitor diverse range human activities the surrounding environment. Crowdsensing is new paradigm which takes advantage pervasive smartphones to sense, collect, analyze data beyond scale what was previously possible. With crowdsensing system, crowdsourcer recruit smartphone users provide sensing...

10.1109/tnet.2015.2421897 article EN IEEE/ACM Transactions on Networking 2015-05-04

Modern communication networks have become very complicated and highly dynamic, which makes them hard to model, predict control. In this paper, we develop a novel experience-driven approach that can learn well control network from its own experience rather than an accurate mathematical just as human learns new skill (such driving, swimming, etc). Specifically, we, for the first time, propose leverage emerging Deep Reinforcement Learning (DRL) enabling model-free in networks; present effective...

10.1109/infocom.2018.8485853 article EN IEEE INFOCOM 2022 - IEEE Conference on Computer Communications 2018-04-01

In this paper, we propose to leverage the emerging deep learning techniques for spatiotemporal modeling and prediction in cellular networks, based on big system data. First, perform a preliminary analysis dataset from China Mobile, use traffic load as an example show non-zero temporal autocorrelation spatial correlation among neighboring Base Stations (BSs), which motivate us discover both dependencies our study. Then present hybrid model prediction, includes novel autoencoder-based Long...

10.1109/infocom.2017.8057090 article EN IEEE INFOCOM 2022 - IEEE Conference on Computer Communications 2017-05-01

Jamming defense is an important yet challenging problem. In this paper, we study the jamming problem in presence of a smart jammer, who can quickly learn transmission power user and adaptively adjust its to maximize damaging effect. We consider both single-channel model multi-channel model. By modeling as Stackelberg game, compute optimal for utility, jammer. For model, prove existence uniqueness Equilibrium (SE) by giving closed-form expressions SE strategies player. SE. design algorithms...

10.1109/twc.2013.071913121570 article EN IEEE Transactions on Wireless Communications 2013-07-30

Location information of workers are usually required for optimal task allocation in mobile crowdsensing, which however raises severe concerns location privacy leakage. Although many approaches have been proposed to protect the locations users, protection crowdsensing has not well explored. In addition, best our knowledge, none existing privacy-preserving mechanisms can provide personalized considering different demands workers. this paper, we propose a framework that allocate tasks...

10.1109/tmc.2018.2861393 article EN IEEE Transactions on Mobile Computing 2019-05-08

With the prosperity of smart devices, crowdsourcing has emerged as a new computing/networking paradigm. Through platform, service requesters can buy from providers. An important component is its incentive mechanism. We study three models crowdsourcing, which involve cooperation and competition among Our simplest model generalizes well-known user-centric studied in recent Mobicom paper. design an mechanism for each models, prove that these mechanisms are individually rational,...

10.1109/infocom.2015.7218676 article EN 2015-04-01

On one hand, cooperative communication has been gaining more and popularity since it great potential to increase the capacity of wireless networks. other applications technology are rarely seen in reality, even some scenarios where demands for bandwidth-hungry have pushed system designers develop innovative network solutions. A main obstacle lying between capability channel improvement wide adoption is lack incentives participating nodes serve as relay nodes. Hence, this paper, we design...

10.1145/2107502.2107514 article EN 2011-05-17

In wireless sensor networks, relay node placement has been proposed to improve energy efficiency. this paper, we study two-tiered constrained problems, where the nodes can be placed only at some prespecified candidate locations. To meet connectivity requirement, connected single-cover problem each is covered by a base station or (to which transmit data), and form network with stations. survivability 2-connected double-cover two stations nodes, We these problems under assumption that R \ge 2r...

10.1109/tmc.2011.126 article EN IEEE Transactions on Mobile Computing 2011-06-21

Tremendous efforts have been made to protect the location privacy of mobile users. Some them, e.g., k-anonymity, require participation multiple users impede adversary from tracing. These participating constitute an anonymity set. However, not all are seriously concerned about their privacy. Therefore, achieve we need provide incentives for participate in In this paper, study problem incentive mechanism design k-anonymity We first consider case where same degree requirement. then requirements...

10.1109/infcom.2013.6567111 article EN 2013-04-01

Smart grid (SG), regarded as the next-generation electric grid, will use advanced power, communication, and information technologies to create an automated, intelligent, widely distributed energy delivery network. In this article, we explore how cloud computing (CC), a paradigm, can be used for management of SG present novel called Cloud Service-Based Information Management (CSSGIM). We analyze benefits opportunities from perspectives both CC domains. further propose model CSSGIM four...

10.1109/mnet.2012.6246750 article EN IEEE Network 2012-01-01

Mobile crowdsensing can enable numerous attractive novel sensing applications due to the prominent advantages such as wide spatiotemporal coverage, low cost, good scalability, pervasive application scenarios, etc. In mobile applications, incentive mechanisms are necessary stimulate more potential smartphone users and achieve service quality. this paper, we focus on exploring truthful for a practical scenario where tasks time window dependent, platform has strong requirement of data...

10.1109/twc.2015.2452923 article EN IEEE Transactions on Wireless Communications 2015-07-07

With the rapid growth of smartphones, mobile crowdsensing emerges as a new paradigm which takes advantage pervasive sensor-embedded smartphones to collect data efficiently. Many auction-based incentive mechanisms have been proposed stimulate smartphone users participate in applications and systems. However, none them has taken into consideration both bid privacy social cost. In this paper, we design two frameworks for privacypreserving that also achieve approximate cost minimization. former,...

10.1109/tmc.2017.2780091 article EN publisher-specific-oa IEEE Transactions on Mobile Computing 2017-12-07

Limited research efforts have been made for Mobile CrowdSensing (MCS) to address quality of the recruited crowd, i.e., services/data each individual mobile user and whole crowd are potentially capable providing, which is main focus paper. Moreover, improve flexibility effectiveness, we consider fine-grained MCS, in sensing task divided into multiple subtasks a may make contributions subtasks. In this paper, first introduce mathematical models characterizing different applications. Based on...

10.1109/icdcs.2016.30 article EN 2016-06-01

Mobile crowd sensing emerges as a new paradigm which takes advantage of the pervasive sensor-embedded smartphones to collect data. Many incentive mechanisms for mobile have been proposed. However, none them into consideration cooperative compatibility users multiple tasks. In this paper, we design truthful minimize social cost such that each tasks can be completed by group compatible users. We study two bid models and formulate Social Optimization Compatible User Selection (SOCUS) problem...

10.1109/tmc.2019.2911512 article EN IEEE Transactions on Mobile Computing 2019-05-02

Crowdsourcing is an emerging paradigm where users can have their tasks completed by paying fees, or receive rewards for providing service. A critical problem that arises in current crowdsourcing mechanisms how to ensure pay what they deserve. Free-riding and false-reporting may make the system vulnerable dishonest users. In this paper, we design schemes tackle these problems, so each individual better off being honest provider prefers completing assigned task. We first a mechanism EFF which...

10.1109/jiot.2015.2441031 article EN IEEE Internet of Things Journal 2015-06-03

Cyber-Physical Embedded Systems (CPESs) are distributed embedded systems integrated with various actuators and sensors. When it comes to the issue of CPES security, most significant problem is security Sensor Networks (ESNs). With continuous growth ESNs, transferring data from sensors their destinations has become an important research area. Due limitations in power, storage, processing capabilities, existing mechanisms for wired or wireless networks cannot apply directly ESNs. Meanwhile,...

10.1145/2886100 article EN ACM Transactions on Embedded Computing Systems 2016-10-13

Mobile crowd sensing is a new paradigm that enables smart mobile devices to collect and share various types of data in urban environments. However, challenges arise: one how evaluate the quality each user potentially capable providing; another allocate satisfactory yet profitable amount reward users order keep them participating tasks. In this paper, we first introduce mathematical model for characterizing be contributed by users. Then, present utility function formulate an optimization...

10.1109/tmc.2018.2877459 article EN IEEE Transactions on Mobile Computing 2018-10-22

Although cryptocurrencies have witnessed explosive growth in the past year, they also raised many concerns, among which a crucial one is scalability issue of blockchain-based cryptocurrencies. Suffering from large overhead global consensus and security assurance, even leading can only handle up to tens transactions per second, largely limits their applications real- world scenarios. Among proposals improve cryptocurrency scalability, most promising mature solutions payment channel network...

10.1109/icccn.2018.8487351 article EN 2018-07-01

Ubiquitous mobile devices with rich sensors and advanced communication capabilities have given rise to crowdsensing systems. The diverse reliabilities of users the openness sensing paradigms raise concerns for data trustworthiness, user privacy, incentive provision. Instead considering these issues as isolated modules in most existing researches, we comprehensively capture both conflict inner-relationship among them. In this paper, propose a holistic solution trustworthy privacy-aware no...

10.1109/tnet.2019.2944984 article EN publisher-specific-oa IEEE/ACM Transactions on Networking 2019-10-28

Cooperative communication has great potential to improve the wireless channel capacity by exploiting antennas on devices for spatial diversity. However, applications of cooperative are barely seen in reality. A main obstacle blocking its wide application is lack incentives nodes participate communication. We first survey existing game theoretic solutions providing cooperation communications. then discuss challenges applying theory

10.1109/mwc.2012.6189412 article EN IEEE Wireless Communications 2012-04-01

Cooperative communication has been proposed to increase the capacity of wireless networks. By exploiting a relay node, it achieves spatial diversity cope with fading channel without requiring nodes be equipped multiple antennas. However, selection significant impact on final capacity. In this paper, we study problem assignment in cooperative networks, where source-destination transmission pairs share same set nodes. Specifically, propose system model node can shared by and present...

10.1109/icc.2011.5963394 article EN 2011-06-01

Exploiting the nature of broadcast and relaying capability wireless devices, cooperative communication is becoming a promising technology to increase channel capacity in networks. In communication, scheme for assigning relay nodes users plays critical role resulting capacity. A significant challenge how make robust selfish cheating behavior while guaranteeing social optimal system this paper, we design an integrated marriage called HERA To avoid performance degradation due selections by...

10.1109/jsac.2012.120202 article EN IEEE Journal on Selected Areas in Communications 2012-01-31

Smart grid (SG) is a power system with advanced communication and information technologies integrated leveraged. In this paper, we study an optimization problem of leveraging the cloud domain to reduce cost management in SG. We propose cloud-based SG model present network resource framework solve reduction storage computation.

10.1109/tsg.2012.2230198 article EN IEEE Transactions on Smart Grid 2013-03-01
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