Power Optimization and Throughput Enhancement in 6G Networks by Delay-Aware Resource Leverage

While refining the specifics of the 5G wireless standards, the research community is already shifting its attention towards new 6G paradigms, like the "network of networks" topology. In that context, the sub-networks will be pivotal to support the advances of industrial internet of things or Industry 4.0, e.g. connecting an entire group of sensors and actuators of a robot. The unprecedented access points density in 6G sub-networks requires the design of schemes that can properly manage the interference. Targeting these high density scenarios, we describe the Power Optimization for Low Interference and Throughput Enhancement (POLITE) paradigm for link adaptation and power allocation which leverages all available radio resources to stabilize and reduce the interference. The baseline link adaptation schemes are compared with POLITE in their performance in a 3GPP-calibrated system level simulator for industrial scenarios. As services in industrial environments require high reliability under constrained delays, we propose delay-aware formulations in the POLITE design. In this work the emphasis is on the algorithmic implementation and performance assessment for generic delay requirements, leaving the investigation of extreme delay requirements for future work. Simulation results prove the benefits of POLITE in terms of increased throughput and delay satisfaction, with an overall reduced transmit power compared to the current baseline link adaptation schemes.