The specification and drawings present a new method, system, apparatus and software product for defining/setting a power of a dual acknowledgement signal provided in an uplink by a user equipment to a network element (e.g., Node B) for acknowledging two transport blocks, e.g., comprised in one TTI, transmitted in a downlink by the network element, according to a predetermined criterion, wherein the user equipment and the network element can be configured to support a multiple input multiple output (MIMO) mode and/or a high speed downlink packet access.