41 citations · 60 across the 23 of their papers we have counts for
19 papers · 1 filter
Age of Information under Source-Aware Truncated ARQ in Multi-Source Wireless Status Updating
Tianci Zhang, Aobo Liu, Zhengchuan Chen +4
This paper studies information timeliness in multi-source wireless Internet of Things (IoT) status updating systems under a truncated Automatic Repeat reQuest (ARQ) protocol. We pr…
Absorbing Markov Chain-Based Analysis of Age of Information in Discrete-Time Dual-Queue Systems
Yifan Feng, Nail Akar, Zhengchuan Chen +1
Status update systems require the timely collection of sensing information for which deploying multiple sensors/servers to obtain diversity gains is considered as a promising solut…
Analysis of Age of Information for A Discrete-Time hybrid Dual-Queue System
Zhengchuan Chen, Yi Qu, Nikolaos Pappas +3
Using multiple sensors to update the status process of interest is promising in improving the information freshness. The unordered arrival of status updates at the monitor end pose…
Timeliness of Status Update System: The Effect of Parallel Transmission Using Heterogeneous Updating Devices
Zhengchuan Chen, Kang Lang, Nikolaos Pappas +4
Timely status updating is the premise of emerging interaction-based applications in the Internet of Things (IoT). Using redundant devices to update the status of interest is a prom…
Age of Information in a Multisource Ber/Geo/1/1 Preemptive Queueing System
Tianci Zhang, Zhengchuan Chen
This work studies the information freshness of the vehicle-to-infrastructure status updating in Internet of vehicles, which is modeled as a multi-source Ber/Geo/1/1 preemptive queu…
Analysis of Age of Information in Dual Updating Systems
Zhengchuan Chen, Dapeng Deng, Howard H. Yang +5
We study the average Age of Information (AoI) and peak AoI (PAoI) of a dual-queue status update system that monitors a common stochastic process. Although the double queue parallel…
Minimizing Age-upon-Decisions in Bufferless System: Service Scheduling and Decision Interval
Shutong Chen, Tianci Zhang, Zhengchuan Chen +4
In Internet of Things (IoT), the decision timeliness of time-sensitive applications is jointly affected by the statistics of update process and decision process. This work consider…
Reconfigurable Intelligent Surface-Aided Spectrum Sharing Coexisting with Multiple Primary Networks
Zhong Tian, Zhengchuan Chen, Min Wang +2
Considering the spectrum sharing system (SSS) coexisting with multiple primary networks, we have employed a well-designed reconfigurable intelligent surface (RIS) to control the ra…
Optimal Distribution Design for Irregular Repetition Slotted ALOHA with Multi-Packet Reception
Zhengchuan Chen, Yifan Feng, Chundie Feng +3
Associated with multi-packet reception at the access point, irregular repetition slotted ALOHA (IRSA) holds a great potential in improving the access capacity of massive machine ty…
Age-optimal Service and Decision Scheduling in Internet of Things
Zhiwei Bao, Yunquan Dong, Zhengchuan Chen +2
We consider an Internet of Things (IoT) system in which a sensor observes a phenomena of interest with exponentially distributed intervals and delivers the updates to a monitor wit…
Age-upon-Decisions Minimizing Scheduling in Internet of Things: To be Random or to be Deterministic?
Yunquan Dong, Zhengchuan Chen, Shanyun Liu +2
We consider an Internet of Things (IoT) system in which a sensor delivers updates to a monitor with exponential service time and first-come-first-served (FCFS) discipline. We inves…
Age of Information Upon Decisions
Yunquan Dong, Zhengchuan Chen, Shanyun Liu +1
We consider an M/M/1 update-and-decide system where Poisson distributed decisions are made based on the received updates. We propose to characterize the freshness of the received u…
Improving Network Availability of Ultra-Reliable and Low-Latency Communications with Multi-Connectivity
Changyang She, Zhengchuan Chen, Chenyang Yang +3
Ultra-reliable and low-latency communications (URLLC) have stringent requirements on quality-of-service and network availability. Due to path loss and shadowing, it is very challen…
Uplink Age of Information of Unilaterally Powered Two-way Data Exchanging Systems
Yunquan Dong, Zhengchuan Chen, Pingyi Fan
We consider a two-way data exchanging system where a master node transfers energy and data packets to a slave node alternatively. The slave node harvests the transferred energy and…
Beyond Empirical Models: Pattern Formation Driven Placement of UAV Base Stations
Jiaxun Lu, Shuo Wan, Xuhong Chen +3
This work considers the placement of unmanned aerial vehicle base stations (UAV-BSs) with criterion of minimum UAV-recall-frequency (UAV-RF), indicating the energy efficiency of mo…
Capacity Region of Gaussian Multiple-Access Channels with Energy Harvesting and Energy Cooperation
Yunquan Dong, Zhengchuan Chen, Pingyi Fan
We consider the capacity region of a -user multiple access channel (MAC) with energy harvesting transmitters. Each user stores and schedules the randomly arriving energy using a…
Optimum Transmission Policies for Energy Harvesting Sensor Networks Powered By a Mobile Control Center
Tao Li, Pingyi Fan, Zhengchuan Chen +1
Wireless energy transfer, namely RF-based energy harvesting, is a potential way to prolong the lifetime of energy-constrained devices, especially in wireless sensor networks. Howev…
Subcarrier grouping with environmental sensing for MIMO-OFDM systems over correlated double-selective fading channels
Jiaxun Lu, Zhengchuan Chen, Pingyi Fan +1
With the increase of physical antenna and subcarrier numbers in MIMO-OFDM systems, channel side information feedback amount and signal precoding complexity overburden will consume…
On the Power Allocation for Hybrid DF and CF Protocol with Auxiliary Parameter in Fading Relay Channels
Zhengchuan Chen, Pingyi Fan, Dapeng Wu +1
In fading channels, power allocation over channel state may bring a rate increment compared to the fixed constant power mode. Such a rate increment is referred to power allocation…