MCS Configuration for 4096-QAM Link Adaptation in NR

The patent introduces a new modulation order parameter (12 for 4096-QAM) beyond the existing maximum of 10 (1024-QAM). By defining new MCS tables with modulation orders up to 12 and configuring specific code rates (e.g., 829.5/1024, 869/1024, 908.5/1024, 948/1024) for 4096-QAM, the system enables higher communication efficiency for terminals with excellent channel quality while maintaining backward compatibility through selective configuration

The patent implements dynamic MCS configuration where the network can flexibly select and configure different MCS tables based on terminal capabilities and channel conditions. Through RRC signaling, the network configures a first MCS table containing 4096-QAM schemes and a second MCS table with conventional schemes, allowing terminals to dynamically adapt between different modulation orders (up to 12) based on real-time channel quality, thus balancing efficiency improvement with system reliability

The patent segments the MCS configuration into multiple distinct tables: a first MCS table containing 4096-QAM schemes with modulation order 12, a second MCS table with conventional schemes (modulation orders up to 10), and potentially a third MCS table for fallback scenarios. This segmentation allows the system to manage complexity by organizing modulation schemes into structured groups, where terminals only need to process the configured table rather than handling all possible modulation schemes simultaneously

The network performs preliminary configuration of MCS tables through RRC signaling before actual data transmission. The network pre-defines the first MCS table with 4096-QAM parameters and code rates, and pre-configures the second MCS table with conventional parameters. This preliminary setup reduces runtime complexity by establishing the modulation framework in advance, allowing terminals to simply select from pre-configured options rather than dynamically calculating optimal parameters during transmission