The power saving schemes with UE adaptation to maximum MIMO layer is for UE to suspend the Rx receiver chains in achieving UE power saving when the number of MIMO layers goes to small. The power saving schemes with UE adaptation to the number of MIMO layers or number of Tx/Rx antenna (panels) have shown up to 3%-30% power saving gain and 4% latency increase for dynamic antenna adaptation. The power saving gain 6%-30% is observed for semi-static antenna adaptation with expected latency and UPT degradation. Additional network resource is used for compensation of the loss of multi-antenna processing gain.
This contribution discussed the network configuration in supporting the UE adaptation to the maximum MIMO layer in achieving the power saving gain.