I help to promote two major projects commissioned by the Ministry of Education, both led by Prof. H.M. Lin: the PBL-STEM+C Cross-Domain Integrated Learning Project and the PBL-STEM+AICT Cross-Domain Integrated Smart Learning Project. These initiatives aim to root problem-based learning (PBL) within STEM education, incorporating Computational Thinking and AICT. PBL-STEM+C跨域統整學習扎根計畫(總召計畫), Project Leader: H.M. Lin, Co-Project Leader: S.S. Tzeng (111.1.1 - 113.12.31) PBL-STEM+A

Cognitive radio networks are one of important technologies which alleviate the under-utilization of radio spectrum in most wireless systems. Energy harvesting is another important technology which provides a device to gather energy from its surroundings. The device could store the energy temporarily in the battery on the device. The device could use the energy to send and receive messages. In this project, we discuss data transmission under the cognitive radio networks with e

Cognitive radio-based capillary machine type communication networks provide more spectrum opportunities for massive radio access requirements, reduce radio interference, save power consumption of machines and reduce the number of frequent access to base stations. In this architecture, a cognitive gateway performs spectrum sensing and notifies machines of the sensing results of bands and the information of available frames. Machines use the information to transmit heterogeneou

This project studies radio spectrum sensing policies in multiple bands from the perspective of quality-of-service and effective throughput, in which goals are effective throughput of different sensing policies for best effort traffic and quality-of-service of real-time traffic in sequential sensing policies. In the former, we propose different sensing policies and attempt to study how different sensing rules, packet time, and sensing time affect the effective throughput of be

Femtocell networks provide mobile users with low-cost and high-bandwidth Internet access. Femtocells embedded in macrocells form a hierarchical network. When a mobile user is in a femtocell under the hierarchical network, the user can connect to the base station in the femtocell. However, due to the inaccurate position information of wireless location estimation methods, the user may connect to an inappropriate base station, which reduces the system performance. Therefore, we

It is the most important for mobile users to find an appropriate spectrum band from multiple bands at an appropriate time such that the mobile users’quality of services and effective throughput are satisfied. In the environment of multiple bands, we observe that the number of spectrum bands being sensed affects the selection of optimal sensing and transmission parameters. Furthermore, from the viewpoint of quality-of-service, different traffic types may correlate with the nu

This project will develop a general model to analyze and select sensing parameters in physical and medium access control layers such that maximize effective throughput.

In this project, we will study radio resource management in a secondary base station, which includes channel allocation between secondary users and spectrum hand-off in a secondary base station.