In data transmission between a mobile network and a terminal device an uplink control channel resource is allocated to the terminal device and to at least one further terminal device. Further, a shared identifier is assigned to both the terminal device and the at least one further terminal device. Using the allocated uplink control channel resource, the mobile network receives a scheduling request from the terminal device. In response to receiving the scheduling request, the mobile network sends an uplink grant. The uplink grant is addressed by the shared identifier to the terminal device and to the at least one further terminal device. Further, the mobile network receives uplink data from the terminal device, which is accomplished on uplink resources indicated by the uplink grant.