HKMU researchers find new way to alleviate wireless network congestion

School of Science and Technology HKMU researchers find new way to alleviate wireless network congestion

HKMU researchers find new way to alleviate wireless network congestion

Date: 13 April 2023

Researchers at Hong Hong Kong Metropolitan University (HKMU) recently developed an algorithm that significantly improves the performance of wireless network transmission and alleviates network congestion caused by a large number of connected devices. The research findings were published in the IEEE Journal on Selected Areas in Communications and have gained wide recognition. Funded by the Research Grants Council's Faculty Development Scheme, the project won the Excellent Research Publication Award in the HKMU Outstanding Research Publication Award 2022.

The rapid development of wireless networks has enabled the development of smart applications that have revolutionised our lives. Many cutting-edge applications, like ultra-high definition video streaming, virtual reality, smart travel, and even remote surgery can be realised with a wireless network with high efficiency and low latency. However, one problem remains unresolved. Owing to limited bandwidth, when too many devices are connected at the same time, the transmission efficiency of the network inevitably degrades, slowing down internet speed.

To address this problem, a team led by Dr Yaru Fu, Assistant Professor in the School of Science and Technology at HKMU, developed an algorithm to optimise network content caching, recommendation and transmission to minimise the latency of wireless networks. In extensive simulations, the algorithm achieved significantly lower latency and improved the cache hit ratio compared to other algorithms in real-life 5G network scenarios, thus improving the overall performance and efficiency of the wireless network. This encouraging result provides insights into the network industry in developing the next generation of wireless networks.

Dr Fu is dedicated to research in network technology and has also participated in research work in France and Singapore. She has been listed among the world's top 2% most-cited scientists by Stanford University.

In recent years, 5G applications have become increasingly popular, and many countries have already initiated research on 6G. Dr Fu, who focuses on the development of smart wireless communication technologies, is also working on this. “We're doing research on integrating networking, storage and computing to solve various problems with 6G mobile communication technology, including network congestion caused by huge data traffic and the need to increase computing power,” she said.

HKMU has been actively promoting applied research. Dr Fu, the Head of the Centre for Research in Advanced Network Technologies under the University's Institute for Research in Innovative Technology & Sustainability, is working assiduously on nurturing new talent for the University. She said she will try hard to cultivate her colleagues' interest in scientific research and attract young people with research ability to join the team, thereby promoting a research culture.

Jonathan Chiu
Marketing Director
3DP Technology Limited

Jonathan handles all external affairs include business development, patents write up and public relations. He is frequently interviewed by media and is considered a pioneer in 3D printing products.

Krutz Cheuk
Biomedical Engineer
Hong Kong Sanatorium & Hospital

After graduating from OUHK, Krutz obtained an M.Sc. in Engineering Management from CityU. He is now completing his second master degree, M.Sc. in Biomedical Engineering, at CUHK. Krutz has a wide range of working experience. He has been with Siemens, VTech, and PCCW.

Hugo Leung
Software and Hardware Engineer
Innovation Team Company Limited

Hugo Leung Wai-yin, who graduated from his four-year programme in 2015, won the Best Paper Award for his ‘intelligent pill-dispenser’ design at the Institute of Electrical and Electronics Engineering’s International Conference on Consumer Electronics – China 2015.

The pill-dispenser alerts patients via sound and LED flashes to pre-set dosage and time intervals. Unlike units currently on the market, Hugo’s design connects to any mobile phone globally. In explaining how it works, he said: ‘There are three layers in the portable pillbox. The lowest level is a controller with various devices which can be connected to mobile phones in remote locations. Patients are alerted by a sound alarm and flashes. Should they fail to follow their prescribed regime, data can be sent via SMS to relatives and friends for follow up.’ The pill-dispenser has four medicine slots, plus a back-up with a LED alert, topped by a 500ml water bottle. It took Hugo three months of research and coding to complete his design, but he feels it was worth all his time and effort.

Hugo’s public examination results were disappointing and he was at a loss about his future before enrolling at the OUHK, which he now realizes was a major turning point in his life. He is grateful for the OUHK’s learning environment, its industry links and the positive guidance and encouragement from his teachers. The University is now exploring the commercial potential of his design with a pharmaceutical company. He hopes that this will benefit the elderly and chronically ill, as well as the society at large.

Soon after completing his studies, Hugo joined an automation technology company as an assistant engineer. He is responsible for the design and development of automation devices. The target is to minimize human labor and increase the quality of products. He is developing products which are used in various sections, including healthcare, manufacturing and consumer electronics.

Course Code Title Credits
  COMP S321F Advanced Database and Data Warehousing 5
  COMP S333F Advanced Programming and AI Algorithms 5
  COMP S351F Software Project Management 5
  COMP S362F Concurrent and Network Programming 5
  COMP S363F Distributed Systems and Parallel Computing 5
  COMP S382F Data Mining and Analytics 5
  COMP S390F Creative Programming for Games 5
  COMP S492F Machine Learning 5
  ELEC S305F Computer Networking 5
  ELEC S348F IOT Security 5
  ELEC S371F Digital Forensics 5
  ELEC S431F Blockchain Technologies 5
  ELEC S425F Computer and Network Security 5
 Course CodeTitleCredits
 ELEC S201FBasic Electronics5
 IT S290FHuman Computer Interaction & User Experience Design5
 STAT S251FStatistical Data Analysis5
 Course CodeTitleCredits
 COMPS333FAdvanced Programming and AI Algorithms5
 COMPS362FConcurrent and Network Programming5
 COMPS363FDistributed Systems and Parallel Computing5
 COMPS380FWeb Applications: Design and Development5
 COMPS381FServer-side Technologies and Cloud Computing5
 COMPS382FData Mining and Analytics5
 COMPS390FCreative Programming for Games5
 COMPS413FApplication Design and Development for Mobile Devices5
 COMPS492FMachine Learning5
 ELECS305FComputer Networking5
 ELECS363FAdvanced Computer Design5
 ELECS425FComputer and Network Security5