FIG. 16 is a flow chart 1600 according to one exemplary embodiment from the perspective of a UE. In step 1605, the UE performs UL transmission with a cell via a first TRP and a second TRP. For example, the UL transmission with the cell may comprise one or more UL transmissions, to the cell, via the first TRP and one or more UL transmissions, to the cell, via the second TRP. In step 1610, the UE triggers a PHR. In step 1615, in response to the PHR (e.g., in response to triggering the PHR), the UE determines whether to indicate a first PH report associated with the first TRP in a MAC CE or to indicate a second PH report associated with the second TRP in the MAC CE based on a first PH type of the first PH report and/or a second PH type of the second PH report. In some examples, the determination of whether to indicate the first PH report in the MAC CE or to indicate the second PH report in the MAC CE may be based on other information in addition to the first PH type and/or the second PH type. In some examples, the determination of whether to indicate the first PH report in the MAC CE or to indicate the second PH report in the MAC CE is performed for generating the MAC CE in response to the PHR (e.g., generating the MAC CE in response to triggering the PHR). In step 1620, the UE generates the MAC CE based on the determination of whether to indicate the first PH report in the MAC CE or to indicate the second PH report in the MAC CE. In an example, if the UE determines to indicate the first PH report in the MAC CE, the UE may generate the MAC CE such that the MAC CE is indicative of the first PH report. Alternatively and/or additionally, if the UE determines to indicate the second PH report in the MAC CE, the UE may generate the MAC CE such that the MAC CE is indicative of the second PH report.
