A method, comprising: establishing an active connection between a cellular network and a user equipment (10-1, 10-2), in which the user equipment (10-1, 10-2) has simultaneously an active connection within a local network distinct from the cellular network; and using an indication within a resource allocation message communicated between the cellular network and the user equipment (10-1, 10-2) to identify whether a radio resource allocated by the resource allocation message is for the cellular network or for the local network; characterised in that: the local network is a device-to-device network comprising at least the user equipment (10-1, 10-2) and a paired device (10-1, 10-2) and the indication comprises at least two bits, and in that a value of the indication identifies the allocated radio resource according to at least one of the following allocations: an allocation to the device-to-device network; an allocation to the user equipment for the cellular network; an allocation to the paired device for the cellular network; and an allocation to both the user equipment (10-1, 10-2) and to the paired device (10-1, 10-2) for the cellular network. establishing an active connection between a cellular network and a user equipment (10-1, 10-2), in which the user equipment (10-1, 10-2) has simultaneously an active connection within a local network distinct from the cellular network; and using an indication within a resource allocation message communicated between the cellular network and the user equipment (10-1, 10-2) to identify whether a radio resource allocated by the resource allocation message is for the cellular network or for the local network; characterised in that: the local network is a device-to-device network comprising at least the user equipment (10-1, 10-2) and a paired device (10-1, 10-2) and the indication comprises at least two bits, and in that a value of the indication identifies the allocated radio resource according to at least one of the following allocations: an allocation to the device-to-device network; an allocation to the user equipment for the cellular network; an allocation to the paired device for the cellular network; and an allocation to both the user equipment (10-1, 10-2) and to the paired device (10-1, 10-2) for the cellular network. the local network is a device-to-device network comprising at least the user equipment (10-1, 10-2) and a paired device (10-1, 10-2) and the indication comprises at least two bits, and in that a value of the indication identifies the allocated radio resource according to at least one of the following allocations: an allocation to the device-to-device network; an allocation to the user equipment for the cellular network; an allocation to the paired device for the cellular network; and an allocation to both the user equipment (10-1, 10-2) and to the paired device (10-1, 10-2) for the cellular network. an allocation to the device-to-device network; an allocation to the user equipment for the cellular network; an allocation to the paired device for the cellular network; and an allocation to both the user equipment (10-1, 10-2) and to the paired device (10-1, 10-2) for the cellular network.