HI, thanks for your question. It is rather open ended though.

I assume you are coming from microwave background, so in that case there are various open directions. Few examples include deciding on what frequency bands to use, designing the link for wireless, designing antennas with very small size, which conform to various shapes and have good efficiency. There are many open research questions. I think you need to be more specific here!

Thanks,

Aditya

Dear Hareesh Ayanampudi,

the Chapter 18 "Top 10 Networking Trends 2019" of my book "IP Network Technology (in german)" at

https://www.researchgate.net/publication/331651693

includes literature sources with links to the following current research directions and challenges for using 5G communication for the IoT:

18.6.1 Time-sensitive IoT/5G Applications

18.7 Next 5G (Generation) Mobile Networks

18.7.1 5G-enabled Mobile IoT Applications

18.7.2 Vehicle-to-Everything (V2X) Service

18.7.3 SDN and NFV for 5G Mobile Networks

18.7.6 5G Network Security

See at the beginning of Chapter 18 the Figure:

Internet, Internet of Things and other IP Networks; Top 10 Networking Trends

Best regards

Anatol Badach