Xu Li

ORCID: 0000-0002-0624-7499
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About
Contact & Profiles
Research Areas
  • Mobile Ad Hoc Networks
  • Cooperative Communication and Network Coding
  • Opportunistic and Delay-Tolerant Networks
  • Wireless Networks and Protocols
  • Energy Efficient Wireless Sensor Networks
  • Advanced MIMO Systems Optimization
  • Advanced Wireless Communication Technologies
  • Security in Wireless Sensor Networks
  • Advanced Wireless Network Optimization
  • Wireless Communication Networks Research
  • IoT Networks and Protocols
  • Vehicular Ad Hoc Networks (VANETs)
  • Power Systems and Technologies
  • Indoor and Outdoor Localization Technologies
  • Satellite Communication Systems
  • Caching and Content Delivery
  • Energy Harvesting in Wireless Networks
  • IPv6, Mobility, Handover, Networks, Security
  • Advanced Wireless Communication Techniques
  • Wireless Body Area Networks
  • Mobile Agent-Based Network Management
  • Internet Traffic Analysis and Secure E-voting
  • Software-Defined Networks and 5G
  • Network Traffic and Congestion Control
  • Smart Grid and Power Systems

Beijing Jiaotong University
2015-2024

Southwest Jiaotong University
2024

Northwestern Polytechnical University
2017-2024

Beihang University
2023

University of Toronto
2022

China Ocean Shipping (China)
2022

Huawei Technologies (Canada)
2014-2021

China Electronics Technology Group Corporation
2021

Northeast Electric Power University
2021

Hebei Science and Technology Department
2018-2020

The integration of communications with different scales, diverse radio access technologies, and various network resources renders next-generation wireless networks (NGWNs) highly heterogeneous dynamic. Emerging use cases applications, such as machine to communications, autonomous driving, factory automation, have stringent requirements in terms reliability, latency, throughput, so on. Such pose new challenges architecture design, management, resource orchestration NGWNs. Starting from...

10.1109/ojvt.2020.2965100 article EN cc-by IEEE Open Journal of Vehicular Technology 2020-01-01

The practical deployment of massive multiple-input multiple-output (MIMO) in the future fifth generation (5G) wireless communication systems is challenging due to its high-hardware cost and power consumption. One promising solution address this challenge adopt low-resolution analog-to-digital converter (ADC) architecture. However, implementation such architecture required complex signal processing compensate coarse quantization caused by ADCs. Therefore, few high-resolution ADCs are reserved...

10.1109/jsac.2017.2687278 article EN IEEE Journal on Selected Areas in Communications 2017-03-25

Providing security and privacy in mobile ad hoc networks has been a major issue over the last few years. Most research work so far focused on providing for routing data content, but nothing done regard to anonymity these networks. We propose novel distributed protocol which guarantees security, high reliability of established route hostile environment, such as an wireless network, by encrypting packet header abstaining from using unreliable intermediate nodes. The objective our is allow...

10.1109/lcn.2004.109 article EN 2005-01-17

The massive amounts of machine-type user equipments (UEs) will be supported in the future fifth generation (5G) networks. However, potential large random access (RA) delay calls for a new RA scheme and detailed assessment its performance. Motivated by key idea non-orthogonal multiple access, (NORA) based on successive interference cancellation (SIC) is proposed this paper to alleviate congestion problem. Specifically, NORA utilizes difference time arrival identify UEs with identical...

10.1109/twc.2017.2703168 article EN IEEE Transactions on Wireless Communications 2017-05-16

Predicting the performance of a tunneling boring machine is vitally important to avoid any possible accidents during boring. The prediction not straightforward due uncertain geological conditions and complex rock-machine interactions. Based on big data obtained from 72.1 ​km long tunnel in Yin-Song Diversion Project China, this study developed learning model predict TBM real-time manner. total thrust cutterhead torque stable period cycle was predicted advance by using machine-returned...

10.1016/j.gsf.2020.02.011 article EN cc-by-nc-nd Geoscience Frontiers 2020-03-10

The topology of a vehicular ad hoc network (VANET) changes rapidly due to high-speed movement vehicles, so traditional mobile (MANET) broadcast protocol may not work efficiently in VANET. This paper proposes distance-based called Efficient Directional Broadcast (EDB) for VANET using directional antennas. In EDB, only the furthest receiver is responsible forward packet opposite direction where arrives. Besides, repeater located at intersection helps disseminating packets vehicles on other...

10.1109/wicom.2007.383 article EN International Conference on Wireless Communications, Networking and Mobile Computing 2007-09-01

Intelligent reflecting surface (IRS) has been proposed as a potential solution to improve the performance of many aspects for future wireless communication. However, issue user's privacy in IRS assisted communications is often ignored previous works. In this paper, we propose an algorithm, namely optimal beam reflection based on federated learning (OBR-FL), achieve high speed communication with sparse channel state information (CSI). The corresponding configuration matrix can be determined...

10.1109/iccworkshops49005.2020.9145388 article EN 2022 IEEE International Conference on Communications Workshops (ICC Workshops) 2020-06-01

We consider a cloud-based heterogeneous network of base stations (BSs) connected via backhaul routers and wired/wireless links with limited capacity. The optimal provision such networks requires proper resource allocation across the radio access in conjunction appropriate traffic engineering within network. In this paper, we propose an efficient algorithm for joint wireless flow control over entire proposed algorithm, which maximizes min-rate among all transmitted commodities, is based on...

10.1109/jsac.2014.2328171 article EN IEEE Journal on Selected Areas in Communications 2014-06-01

Multiple signal classification (MUSIC) has been widely applied in wireless communications for direction-of-arrival (DOA) estimation. For massive multiple-input multiple-output (MIMO) systems operating at millimeter-wave bands, hybrid analog-digital structure adopted transceiver design to reduce the cost of radio frequency chains. In MIMO systems, received signals antennas are not sent receiver directly, and spatial covariance matrix, which is essential MUSIC algorithm, thus unavailable. As a...

10.1109/lwc.2020.2985014 article EN IEEE Wireless Communications Letters 2020-04-01

We formalize the distance-sensitive service discovery problem in wireless sensor and actor networks, propose a novel localized algorithm, iMesh. Unlike existing solutions, iMesh uses no global computation generates constant per-node storage load. In iMesh, new providers (i.e., actors) publish their location information four directions, updating an mesh. Information propagation for relatively remote services is restricted by blocking rule, which also updates mesh structure. Based on extension...

10.1109/tc.2009.54 article EN IEEE Transactions on Computers 2009-04-18

As sensors are energy constrained devices, one challenge in wireless sensor networks (WSNs) is to guarantee coverage and meanwhile maximize network lifetime. In this paper, we leverage prediction solve challenging problem, by exploiting temporal-spatial correlations among sensory data. The basic idea lies that a node can be turned off safely when its information inferred through some methods, like Bayesian inference. We adopt the concept of entropy theory evaluate uncertainty about region...

10.1109/tpds.2011.180 article EN IEEE Transactions on Parallel and Distributed Systems 2011-06-28

The α-η-κ-μ model was recently proposed as a generalized fading and can include all well-known small-scale models special cases. In this letter, we investigate the channel capacity of wireless communications that operate in channels. More specifically, novel exact expressions for under different adaptive transmission policies are derived terms infinite series. Previous results be obtained through our newly by combining and/or specializing various parameters model. Moreover, analytical assess...

10.1109/lcomm.2017.2672960 article EN IEEE Communications Letters 2017-02-24

In this two-part paper, we propose a novel medium access control (MAC) protocol for machine-type communications in the Industrial Internet of Things. The considered use case features limited geographical area and massive number devices with sporadic data traffic different priority types. We target supporting while satisfying their Quality-of-Service (QoS) requirements single point channel, which necessitates customized design that can significantly improve MAC performance. Part I present...

10.1109/jiot.2021.3051181 article EN IEEE Internet of Things Journal 2021-01-13

A mobile ad hoc network consists of nodes that can move freely in an open environment. Communicating a wireless and usually seek the help other intermediate to establish communication channels. In such environment, malicious be threat security and/or anonymity exchanged data between nodes. While encryption protect content nodes, routing information may reveal valuable about end users their relationships. The main purposes this paper are study possibility achieving networks, propose anonymous...

10.1145/1023756.1023763 article EN 2004-10-04

Mobile Ad hoc Networks (MANETs) play an important role in emergency communications where network needs to be constructed temporarily and quickly. Since the nodes move randomly, routing protocols must highly effective reliable guarantee successful packet delivery. Based on data delivery structure, most of existing multicast can classified into two folders: tree-based mesh-based. We observe that ones have high forwarding efficiency low consumptions bandwidth, they may poor robustness because...

10.1109/cc.2014.6821741 article EN China Communications 2014-02-01

It is essential to consider drivers' perceptions and reactions when building Vehicular Cyber-Physical Systems (VCPS) since the effectiveness efficiency of VCPS will largely depend on how drivers could benefit from such a system. This paper considers, for first time, novel service scheduling problems Human Factors (HF) standpoint by taking into consideration following fact: driver may not be able receive more than one in short period even if multiple services can transmitted conventional...

10.1109/tpds.2012.89 article EN IEEE Transactions on Parallel and Distributed Systems 2012-03-19

10.1016/j.ijepes.2022.108637 article EN International Journal of Electrical Power & Energy Systems 2022-09-26
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