69 citations · 310 across the 26 of their papers we have counts for
27 papers
A QoE Model in Point Cloud Video Streaming
Jie Li, Xiao Wang, Zhi Liu +1
Point cloud video has been widely used by augmented reality (AR) and virtual reality (VR) applications as it allows users to have an immersive experience of six degrees of freedom…
Adaptive Streaming of 360 Videos with Perfect, Imperfect, and Unknown FoV Viewing Probabilities in Wireless Networks
Lingzhi Zhao, Ying Cui, Zhi Liu +2
This paper investigates adaptive streaming of one or multiple tiled 360 videos from a multi-antenna base station (BS) to one or multiple single-antenna users, respectively, in a mu…
Power-Efficient Wireless Streaming of Multi-Quality Tiled 360 VR Video in MIMO-OFDMA Systems
Chengjun Guo, Lingzhi Zhao, Ying Cui +2
In this paper, we study the optimal wireless streaming of a multi-quality tiled 360 virtual reality (VR) video from a multi-antenna server to multiple single-antenna users in a mul…
Optimal Transmission of Multi-Quality Tiled 360 VR Video in MIMO-OFDMA Systems
Chengjun Guo, Ying Cui, Zhi Liu +1
In this paper, we study the optimal transmission of a multi-quality tiled 360 virtual reality (VR) video from a multi-antenna server (e.g., access point or base station) to multipl…
Optimal Streaming of 360 VR Videos with Perfect, Imperfect and Unknown FoV Viewing Probabilities
Lingzhi Zhao, Ying Cui, Chengjun Guo +1
In this paper, we investigate wireless streaming of multi-quality tiled 360 virtual reality (VR) videos from a multi-antenna server to multiple single-antenna users in a multi-carr…
Optimal Wireless Streaming of Multi-Quality 360 VR Video by Exploiting Natural, Relative Smoothness-enabled and Transcoding-enabled Multicast Opportunities
Kaixuan Long, Ying Cui, Chencheng Ye +1
In this paper, we would like to investigate optimal wireless streaming of a multi-quality tiled 360 virtual reality (VR) video from a server to multiple users. To this end, we prop…
DRLE: Decentralized Reinforcement Learning at the Edge for Traffic Light Control in the IoV
Pengyuan Zhou, Xianfu Chen, Zhi Liu +3
The Internet of Vehicles (IoV) enables real-time data exchange among vehicles and roadside units and thus provides a promising solution to alleviate traffic jams in the urban area.…
Information Freshness-Aware Task Offloading in Air-Ground Integrated Edge Computing Systems
Xianfu Chen, Celimuge Wu, Tao Chen +5
This paper studies the problem of information freshness-aware task offloading in an air-ground integrated multi-access edge computing system, which is deployed by an infrastructure…
Computation Offloading in Beyond 5G Networks: A Distributed Learning Framework and Applications
Xianfu Chen, Celimuge Wu, Zhi Liu +2
Facing the trend of merging wireless communications and multi-access edge computing (MEC), this article studies computation offloading in the beyond fifth-generation networks. To a…
Joint Communication and Computational Resource Allocation for QoE-driven Point Cloud Video Streaming
Jie Li, Cong Zhang, Zhi Liu +2
Point cloud video is the most popular representation of hologram, which is the medium to precedent natural content in VR/AR/MR and is expected to be the next generation video. Poin…
QoE-driven Coupled Uplink and Downlink Rate Adaptation for 360-degree Video Live Streaming
Jie Li, Ransheng Feng, Zhi Liu +2
360-degree video provides an immersive 360-degree viewing experience and has been widely used in many areas. The 360-degree video live streaming systems involve capturing, compress…
Optimal Transmission of Multi-Quality Tiled 360 VR Video by Exploiting Multicast Opportunities
Kaixuan Long, Ying Cui, Chencheng Ye +1
In this paper, we would like to investigate fundamental impacts of multicast opportunities on efficient transmission of a 360 VR video to multiple users in the cases with and witho…
Optimal Multi-View Video Transmission in OFDMA Systems
Wei Xu, Ying Cui, Zhi Liu +1
In this letter, we study the transmission of a multi-view video (MVV) to multiple users in an Orthogonal Frequency Division Multiple Access (OFDMA) system. To maximally improve tra…
EmoSense: Computational Intelligence Driven Emotion Sensing via Wireless Channel Data
Yu Gu, Yantong Wang, Tao Liu +6
Emotion is well-recognized as a distinguished symbol of human beings, and it plays a crucial role in our daily lives. Existing vision-based or sensor-based solutions are either obs…
WiFi-based Real-time Breathing and Heart Rate Monitoring during Sleep
Yu Gu, Xiang Zhang, Zhi Liu +1
Good quality sleep is essential for good health and sleep monitoring becomes a vital research topic. This paper provides a low cost, continuous and contactless WiFi-based vital sig…
Age of Information-Aware Radio Resource Management in Vehicular Networks: A Proactive Deep Reinforcement Learning Perspective
Xianfu Chen, Celimuge Wu, Tao Chen +4
In this paper, we investigate the problem of age of information (AoI)-aware radio resource management for expected long-term performance optimization in a Manhattan grid vehicle-to…
BeSense: Leveraging WiFi Channel Data and Computational Intelligence for Behavior Analysis
Yu Gu, Xiang Zhang, Zhi Liu +1
The ever evolving informatics technology has gradually bounded human and computer in a compact way. Understanding user behavior becomes a key enabler in many fields such as sedenta…
Optimal Multi-View Video Transmission in Multiuser Wireless Networks by Exploiting Natural and View Synthesis-Enabled Multicast Opportunities
Wei Xu, Ying Cui, Zhi Liu
Multi-view videos (MVVs) provide immersive viewing experience, at the cost of traffic load increase for wireless networks. In this paper, we would like to optimize MVV transmission…
Optimal Multi-Quality Multicast for 360 Virtual Reality Video
Kaixuan Long, Chencheng Ye, Ying Cui +1
A 360 virtual reality (VR) video, recording a scene of interest in every direction, provides VR users with immersive viewing experience. However, transmission of a 360 VR video whi…
Optimal Multicast of Tiled 360 VR Video in OFDMA Systems
Chengjun Guo, Ying Cui, Zhi Liu
In this letter, we study optimal multicast of tiled 360 virtual reality (VR) video from one server (base station or access point) to multiple users in an orthogonal frequency divis…
Optimal Multicast of Tiled 360 VR Video
Chengjun Guo, Ying Cui, Zhi Liu
In this letter, we study optimal multicast of tiled 360 virtual reality (VR) video from one server (base station or access point) to multiple users. We consider random viewing dire…
Energy-Efficient Multi-View Video Transmission with View Synthesis-Enabled Multicast
Wei Xu, Yuzhuo Wei, Ying Cui +1
Multi-view videos (MVVs) provide immersive viewing experience, at the cost of heavy load to wireless networks. Except for further improving viewing experience, view synthesis can c…
AF-DCGAN: Amplitude Feature Deep Convolutional GAN for Fingerprint Construction in Indoor Localization Systems
Qiyue Li, Heng Qu, Zhi Liu +4
With widely deployed WiFi network and the uniqueness feature (fingerprint) of wireless channel information, fingerprinting based WiFi positioning is currently the mainstream indoor…
A Deep Reinforcement Learning Based Approach for Cost- and Energy-Aware Multi-Flow Mobile Data Offloading
Cheng Zhang, Zhi Liu, Bo Gu +2
With the rapid increase in demand for mobile data, mobile network operators are trying to expand wireless network capacity by deploying wireless local area network (LAN) hotspots o…