Aloha! Revolutionizing communication on the beautiful big island

Hari's experience at GLOBECOM 2019 held at the beautiful Hilton Waikoloa Village, Big Island, Hawaii, USA

Written by Hari Hara Suthan on January 11, 2020

As a part of my research on coded caching, I have presented my paper entitled Low subpacketization coded caching via projective geometry for broadcast and D2D networks in communication theory symposium of 2019 IEEE Global Communications conference (GLOBECOM), held at the beautiful Hilton Waikoloa Village, Big Island, Hawaii, USA. GLOBECOM 2019 was themed 'Revolutionizing Communication'

In a nutshell coded caching is a technique proposed to effectively utilize the limited and costly spectrum by using cost-effective cache memory available at network edge nodes and user terminals. The state of the art coded caching schemes suffer with a so called problem of huge subpacketization, because of which they can only be applied to files of extremely large size (say greater than 1 TB). In practice we deal with files of finite sizes (for example a typical HD movie on Netflix or YouTube has size less than 5 GB). Our proposed coded caching schemes achieve practical subpacketization values by using advanced mathematical tools from Graph theory, Projective geometry. Hence the proposed schemes have both practical and theoretical implications.

Key learnings from the visit

GLOBECOM is one of the two flagship conferences of IEEE Communications society and a very good platform for both academia and industry. It consists of several exciting keynotes, 13 technical symposia, industry panels, industry demos and many more. Being a research student, I got lot of exposure to current research trends in communications by interacting with fellow researchers and keynote speakers. Having attended this conference, I now understand how research results of academic labs are absorbed by the industry for commercial roll out, and how the challenges of industry are taken as research problems by academia.

It is F-RAN’s (Fog Radio Access Networks) and IoT (Internet of Things) technology that is going to revolutionize our communication industry in future. Machine learning and Artificial intelligence remain will be the key tools for this revolution.


I am highly thankful to my adviser Dr. Prasad Krishnan for his constant support, which enabled me to present our work at Globecom. I am grateful to Dr Lalitha Vadlamani (chair of joint Comsoc/SP society chapter of IEEE Hyderabad Section), for her help to get the IEEE Comsoc travel grant under student membership initiative drive. I am also thankful to SPCRC and in general to IIITH for providing research facilities.