An access and mobility management function (AMF) receives, from a first wireless device, a service request message requesting activation of a user plane connection of a PDU session for transmission of data packets to a wireless device group comprising one or more second wireless devices. The service request message comprises a multicast information associated with the wireless device group. A determination is made, based on the service request message, to activate a user plane connection of the wireless device group. A message requesting activation of the user plane connection of the wireless device group is sent to a Session Management Function (SMF).