SRS Antenna Switching With Power Imbalance Feedback

The patent segments the antenna configurations into different groups based on power balance characteristics. It identifies and separates antenna configurations that exhibit power imbalance from those that maintain balanced power distribution, allowing the system to selectively switch between segments with different power characteristics. This segmentation enables the network to manage power imbalances while maintaining switching efficiency across multiple configurations.

The patent implements feedback mechanisms where the WTRU reports power imbalance information about SRS resources to the network. This feedback loop allows the network to detect power imbalance conditions, adjust antenna switching decisions accordingly, and select optimal antenna configurations that maintain power balance while achieving efficient antenna switching across multiple configurations.

The patent segments the Tx chains into coherent and non-coherent groups based on their phase and amplitude stability. By dividing the full set of Tx chains into segments with different coherence characteristics, the system can selectively activate appropriate segments for SRS transmission. This allows comprehensive measurement coverage through all chains while managing coherence complexity by processing different segments according to their specific coherence properties rather than treating all chains uniformly.

The patent applies different processing and handling methods to different Tx chains based on their individual coherence qualities. Instead of uniform treatment, each Tx chain or group of chains receives tailored processing according to its coherence characteristics. This local quality approach enables accurate channel measurement across all chains while reducing overall coherence management complexity by addressing each chain's specific properties rather than imposing stringent coherence requirements on all chains equally.