Scoring the Terabit/s Goal: Broadband Connectivity in 6G

Abstract
This paper explores the road to vastly improving the broadband connectivity in future 6G wireless systems. Different categories of use cases are considered, with peak data rates up to 1 Tbps. Several categories of enablers at the infrastructure, spectrum, and protocol/algorithmic levels are required to realize the intended broadband connectivity goals in 6G. At the infrastructure level, we consider ultra-massive MIMO technology (possibly implemented using holographic radio), intelligent reflecting surfaces, user-centric cell-free networking, integrated access and backhaul, and integrated space and terrestrial networks. At the spectrum level, the network must seamlessly utilize sub-6 GHz bands for coverage and spatial multiplexing of many devices, while higher bands will be mainly used for pushing the peak rates of point-to-point links. Finally, at the protocol/algorithmic level, the enablers include improved coding, modulation, and waveforms to achieve lower latency, higher reliability, and reduced complexity.

Authors
Nandana Rajatheva, Italo Atzeni, Simon Bicais, Emil Björnson, Andre Bourdoux, Stefano Buzzi, Carmen D'Andrea, Jean-Baptiste Dore, Serhat Erkucuk, Manuel Fuentes, Ke Guan, Yuzhou Hu, Xiaojing Huang, Jari Hulkkonen, Josep Miquel Jornet, Marcos Katz, Behrooz Makki, Rickard Nilsson, Erdal Panayirci, Khaled Rabie, Nuwanthika Rajapaksha, MohammadJavad Salehi, Hadi Sarieddeen, Shahriar Shahabuddin, Tommy Svensson, Oskari Tervo, Antti Tolli, Qingqing Wu, Wen Xu.

[jasminnadic]

I just read about the implementation of the whole multi antenna topic to mobile communication.
It seems to be a bit complicated.
Perhaps it is worthy to do video about that topic.
I refer to 5G, and I mean the keywords Codebook 1, Codebook 2, Precoding Matrix Indicator PMI, SU-MIMO, MU-MIMO, Rank, Codewords, Layers, Channel State Informationen CSI, ...
To my mind, that is the link to the practical application within the current mobile communication standard.
Thank you.

[sldspaceoflearningdevelope]

Thanks so much Looking forward to read

[praveendissanayake]

Hi, Dr. Bjornson. Ive been following your content for some time and this fascinating area of wireless communication has peaked my interest. Im currently in the final year of my network engineering degree which mainly deals with IP networking and 802.11 WLANs. Would you recommend pursuing a postgrad in wireless communication as a proper prerequisite for entering the field of cellular communications?

[pitmaler]

Thanks.
Assumption: I have a MiMO system, and I picked 2 beams. So I want to achieve 2 UEs. Are you restricted to what symbols you send (in the IQ plane). When I send 2 symbols which are phase shifted by 180 deg., they cancel out each other, I presume. Must the 2 symbols that I send to my receivers always exactly in the same phase? On the other hand, that sounds weird, because you cannot send 2 real independent streams. Thanks.

Or is that only correct with analog beamforming, and in digital beamforming, you can have these independent streams?

[vikramkrishnamusic]

Thank you for the video Professor ! It would be nice if you could throw some light on 6G Core Network research areas. In 5G, some concepts like Edge, Fog Computing, Network Slicing has been explored and implemented. Similar to this, what can we expect in 6G ? Thank you.

[al-hussienal-torfy]

Thank u professor, i have one question if u could answer me pls, what is the formula or equation to determine magnitude of (SLL) side lobe level in beamforming for 5g

[Samlaren]

Since it is always best to ask before reading.... ;-)
Is this mainly for stationary devices, or will it also be practical for moving devices? ie Mobilphones in a car/train or even handheld?

[faizansaeed]

Hi Professor. Thanks for enlightening us. I have a query here.