CitySee: Urban CO2 monitoring with sensors

X Mao, X Miao, Y He, XY Li, Y Liu - 2012 Proceedings IEEE …, 2012 - ieeexplore.ieee.org
Motivated by the needs of precise carbon emission measurement and real-time surveillance
for CO 2 management in cities, we present CitySee, a real-time CO 2-monitoring system …

mZig: Enabling multi-packet reception in ZigBee

L Kong, X Liu - Proceedings of the 21st annual international …, 2015 - dl.acm.org
This paper presents mZig, a novel physical layer design that enables a receiver to
simultaneously decode multiple packets from different transmitters in ZigBee. As a low …

Beyond triangle inequality: Sifting noisy and outlier distance measurements for localization

Z Yang, L Jian, C Wu, Y Liu - ACM Transactions on Sensor Networks …, 2013 - dl.acm.org
Knowing accurate positions of nodes in wireless ad hoc and sensor networks is essential for
a wide range of pervasive and mobile applications. However, errors are inevitable in …

Towards energy-fairness in asynchronous duty-cycling sensor networks

Z Li, M Li, Y Liu - ACM Transactions on Sensor Networks (TOSN), 2014 - dl.acm.org
In this article, we investigate the problem of controlling node sleep intervals so as to achieve
the min-max energy fairness in asynchronous duty-cycling sensor networks. We propose a …

Age of Information in Mobile Networks: Fundamental Limits and Tradeoffs

M Zhang, HH Yang, A Arafa, HV Poor - Proceedings of the Twenty-fifth …, 2024 - dl.acm.org
Age of information (AoI), defined for an information source as the time elapsed since the
latest received update was generated, is a recently proposed metric that quantifies the …

Aggregation capacity of wireless sensor networks: Extended network case

C Wang, C Jiang, Y Liu, XY Li… - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
A critical function of wireless sensor networks (WSNs) is data gathering. One is often only
interested in collecting a specific function of the sensor measurements at a sink node, rather …

Impact of channel estimation error on bidirectional MABC-AF relaying with asymmetric traffic requirements

J Li, J Ge, C Zhang, J Shi, Y Rui… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
Channel estimation error results in severe performance deterioration in wireless networks. In
this paper, we study the impact of imperfect channel estimation (ICE) on the outage …

SelectCast: Scalable data aggregation scheme in wireless sensor networks

C Wang, C Jiang, S Tang, XY Li - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
In this work, for a wireless sensor network (WSN) of n randomly placed sensors with node
density λ ∈ 1, n, we study the tradeoffs between the aggregation throughput and gathering …

Improving throughput and fairness of convergecast in vehicular networks

R Jiang, Y Zhu, Y Yang - IEEE Transactions on Mobile …, 2017 - ieeexplore.ieee.org
Delivering data from source vehicles to infrastructures, or convergecast, is a fundamental
operation in vehicular networks. However, the network capacity of vehicular network is …

Capacity-delay trade-off in collaborative hybrid ad-hoc networks with coverage sensing

L Chen, W Luo, C Liu, X Hong, J Shi - Sensors, 2017 - mdpi.com
The integration of ad hoc device-to-device (D2D) communications and open-access small
cells can result in a networking paradigm called hybrid the ad hoc network, which is …