Power saving

A method of adjusting a power saving mode of user equipment operating in a wireless communication network a computer program product and base station operable to perform that method. The power saving mode comprises a discontinuous reception and/or transmission mode according to which user equipment periodically switches, according to a first predetermined scheme, between a first state in which data packets may be communicated between the user equipment and the network and a second state in which data packets cannot be communicated between the user equipment and the network. The method comprises: determining that there is data traffic to be communicated between the user equipment and the network; assessing whether the data traffic can be communicated within the first predetermined scheme in accordance with at least one predetermined efficiency target; and if not: adjusting at least one operational parameter of the first predetermined scheme to move communication of the data traffic between the user equipment a