The present invention comprises methods for efficiently identifying international outbound calls, in the telecommunications network of the outgoing country, which should be screened as possibly requiring processing according to a Global Virtual Network Service, as opposed to conventional international long distance call processing. For example, a method in accordance with an embodiment of the invention may include transmitting a combined signal over a combined channel by mapping a first block of said combined signal to be carried by a first sub-channel of said combined channel and mapping a second block, substantially identical to said first block, to be carried by a second sub-channel of said combined channel. The base station may transmit, to the terminal, information associated with a resource which has a possibility of being used for transmission of a physical downlink control channel, and the terminal may decode the PDCCH in the resource which has a possibility of being used for transmission of the PDCCH.