Today’s Patent – PDCCH Reliability Enhancements with Multiple Trps

The said invention (US20230156738A1) was invented by Shiwei GaoMattias FrenneSiva MuruganathanJianwei Zhang, patented by USPTO on 05-02-2020. Currently, it stands assigned to Telefonaktiebolaget LM Ericsson AB.

In modern cellular communication systems, the reliability of Physical Downlink Control Channel (PDCCH) transmission and reception is crucial for efficient network performance. Existing methods typically rely on single-control resource sets (CORESETs) for downlink control information (DCI) transmission, which can lead to increased decoding errors in challenging network conditions such as interference, fading, or weak signal strength. Traditional approaches focus on repetition schemes within the same CORESET or employ robust channel encoding techniques to enhance PDCCH reliability. However, these methods may still be limited in their ability to ensure reliable reception in dynamic and complex wireless environments.

This innovation improves PDCCH reliability by introducing a method that utilizes multiple CORESETs for PDCCH repetition, allowing for greater redundancy and improved decoding accuracy. By receiving repetitions of the PDCCH carrying the same DCI across different CORESETs, the system enhances transmission robustness through either different or identical channel encoding schemes. This approach mitigates signal degradation issues, increases control channel reliability, and optimizes network performance under varying radio conditions. The ability to decode DCI based on multiple PDCCH repetitions provides a significant improvement in reliability, ensuring more stable and efficient wireless communication.