38 citations · 41 across the 6 of their papers we have counts for
6 papers
Charging Wireless Sensor Networks with Mobile Charger and Infrastructure Pivot Cluster Heads
Dongsoo Har
Wireless rechargeable sensor networks (WRSNs) consisting of sensor nodes with batteries have been at the forefront of sensing and communication technologies in the last few years.…
Data Transmission with Reduced Delay for Distributed Acoustic Sensors
Hyun-Gyu Ryu, Sang-Keum Lee, Dongsoo Har
This paper proposes a channel access control scheme fit to dense acoustic sensor nodes in a sensor network. In the considered scenario, multiple acoustic sensor nodes within commun…
Dementia assistive system as a dense network
Dongsoo Har
As elderly population increases, portion of dementia patients becomes larger. Thus social cost of caring dementia patients has been a major concern to many nations. This article in…
Energy-Efficient Infrastructure Sensor Network for Ad Hoc Cognitive Radio Network
Muhammad Usman, Dongsoo Har, Insoo Koo
We propose an energy-efficient network architecture that consists of ad hoc (mobile) cognitive radios (CRs) and infrastructure wireless sensor nodes. The sensor nodes within commun…
Safety technology for train based on multi-sensors and braking system
Dongsoo Har
This work deals with integration and transmission of safety information for smart railway vehicles and control and design of cooperative emergency brake systems for high speed trai…
Situation-Aware Integration and Transmission of Safety Information for Smart Railway Vehicles
Hanul Yeon, Dongsoo Har
Recent trend of railway train development can be characterized in several aspects : high speed, infortainment, intelligence in driving, and so on. In particular, trend of high spee…