Adaptive MCS and Incremental Redundancy for MBS Resource Efficiency

The patent applies local quality by transmitting data at different MCS levels to different MSs based on their individual channel conditions. Specifically, the BS transmits MBS data at a first MCS level to MSs with good channel status and at a second, more robust MCS level to MSs with poor channel status. This allows each MS to receive data at the appropriate quality level for its channel conditions, improving overall downlink resource efficiency while maintaining reliability for all users.

The patent applies the taking out principle by enabling MSs to extract and decode only the specific subframes containing MBS data that are relevant to their channel conditions. Instead of processing all subframes uniformly, each MS can identify and process only the subframes transmitted at its appropriate MCS level, significantly reducing unnecessary FFT processing and power consumption while ensuring reliable reception of required data.

The patent applies dynamics by making the MCS level adaptive and variable rather than fixed. The BS dynamically selects different MCS levels (first MCS level for good channel conditions, second MCS level for poor channel conditions) based on real-time channel status information from different MSs. This dynamic adaptation allows the system to extend coverage to distant MSs with poor channels while efficiently utilizing downlink resources for nearby MSs with good channels, avoiding the resource waste associated with always using the most robust MCS level.