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6G Wireless Systems: Vision, Requirements, Challenges, Insights, and Opportunities

 

Vision for 6G systems and its underlaying use cases. Here, we also summarize the key performance metrics that are of primary interest. Technical Performance Requirements of 6G Systems and a Comparison of the 6G KPIs Relative to Those for 5G and 4G Systems Average atmospheric absorption loss versus carrier frequency up to 1000 GHz. The two curves denote the standard, i.e., sea-level attenuation and dry air attenuation, where various peaks and troughs are observed for oxygen- and water-sensitive regions. High-level overview of the 6G architecture, where compute/storage/networking has been flattened, the transport network has been “shortcut” with a sliced local breakout to enable low latency between the networks of two operators, and an AI-Plane (A-Plane) has been introduced in addition to a user-plane (U-Plane) and control-plane (C-Plane). Furthermore, the 3GPP logical network entities, such as PCF/AMF/UPF, are being disaggregated further through cloud-centric lambda functions. Qualitative Comparison of Contending Modulation Formats

 

Mobile communications have been undergoing a generational change every ten years or so. However, the time difference between the so-called “G’s” is also decreasing. While fifth-generation (5G) systems are becoming a commercial reality, there is already significant interest in systems beyond 5G, which we refer to as the sixth generation (6G) of wireless systems. In contrast to the already published papers on the topic, we take a top-down approach to 6G. More precisely, we present a holistic discussion of 6G systems beginning with lifestyle and societal changes driving the need for next-generation networks. This is followed by a discussion into the technical requirements needed to enable 6G applications, based on which we dissect key challenges and possibilities for practically realizable system solutions across all layers of the Open Systems Interconnection stack (i.e., from applications to the physical layer). Since many of the 6G applications will need access to an order-of-magnitude more spectrum, utilization of frequencies between 100 GHz and 1 THz becomes of paramount importance. As such, the 6G ecosystem will feature a diverse range of frequency bands, ranging from below 6 GHz up to 1 THz. We comprehensively characterize the limitations that must be overcome to realize working systems in these bands and provide a unique perspective on the physical and higher layer challenges relating to the design of next-generation core networks, new modulation and coding methods, novel multiple-access techniques, antenna arrays, wave propagation, radio frequency transceiver design, and real-time signal processing. We rigorously discuss the fundamental changes required in the core networks of the future, such as the redesign or significant reduction of the transport architecture that serves as a major source of latency for time-sensitive applications. This is in sharp contrast to the present hierarchical network architectures that are not suitable to realize many of the anticipated 6G services. While evaluating the strengths and weaknesses of key candidate 6G technologies, we differentiate what may be practically achievable over the next decade, relative to what is possible in theory. Keeping this in mind, we present concrete research challenges for each of the discussed system aspects, providing inspiration for what follows. Read more at 6G Wireless Systems

6G Wireless Systems: Vision, Requirements, Challenges, Insights, and Opportunities (pdf)

 
   
   

TACS is a leading top consultancy in the field of nth Generation Fixed or Mobile Wireless Systems and Networks.

TACS consultants are the first inventors of fixed or mobile packet radio structures in the world for 2G, 3G, 4G, 5G and 6G wireless systems.

TACS is Pioneer and Innovator of many Communication Signal Processors, Optical Modems, Radio Modems, 5G Modems, 6G Modems, Satellite Modems, PSTN Modems, Cable Modems, PLC Modems, and more..

 


   
 

 

 
 

TACS 

  • Delivers the insight and vision on technology for strategic decisions on 6G.
  • Assesses technologies and standards and develops architectures for 6G.
  • Provides the energy and experience of world-wide leading innovators and experts in 6G.
 
   
 

 

   
   
   

   
 
   
 
 

 


 

   
 

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Last modified: January 19, 2022

 

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