A method performed by a first user equipment, UE, (102a, 410a, 610a) the method comprising: receiving configuration information, from a network node (112a, 112b, 405, 605), for the first UE (102a, 410a, 610a), UE1 configuration information, for an inter-device session, IDS, between the first UE (102a, 410a, 610a) and a second UE (102b, 410b, 610b), characterized in that, the UE1 configuration information including a control message in which IDS resource allocations are signalled, the control message being configured with a radio network identifier and a radio resource identifier, the radio resource identifier corresponding to an IDS radio resource for transmitting data directly from the first UE (102a, 410a, 610a) to the second UE (102b, 410b, 610b); further characterized in that, the UE1 configuration information including: an IDS radio network temporary identifier, IDS-RNTI, whereby physical downlink control channel, PDCCH, ' messages related to an IDS are configured with the IDS-RNTI, and IDS resource allocations signaled in the PDCCH and configured with the IDS-RNTI indicate grants for direct UE-to-UE transmissions; and information for assigning IDS physical uplink control channel, IDS-PUCCH, for transmitting an IDS acknowledgement/negative acknowledgement, ACK/NACK, feedback to the network node using the IDS-PUCCH; signalling, by the first UE (102a, 410a, 610a), capabilities that indicate whether the first UE (102a, 410a, 610a) is able to receive IDS data and downlink data from a network node (112a, 112b, 405, 605) in the same subframe on different carriers, before the first UE receives the configuration information from the network node, wherein the signalled capabilities cause the network node to schedule the IDS data and the downlink data from the network node in the same subframe on different carriers; transmitting data directly to the second UE (102b, 410b, 610b) during the IDS. receiving configuration information, from a network node (112a, 112b, 405, 605), for the first UE (102a, 410a, 610a), UE1 configuration information, for an inter-device session, IDS, between the first UE (102a, 410a, 610a) and a second UE (102b, 410b, 610b), characterized in that, the UE1 configuration information including a control message in which IDS resource allocations are signalled, the control message being configured with a radio network identifier and a radio resource identifier, the radio resource identifier corresponding to an IDS radio resource for transmitting data directly from the first UE (102a, 410a, 610a) to the second UE (102b, 410b, 610b); further characterized in that, the UE1 configuration information including: an IDS radio network temporary identifier, IDS-RNTI, whereby physical downlink control channel, PDCCH, ' messages related to an IDS are configured with the IDS-RNTI, and IDS resource allocations signaled in the PDCCH and configured with the IDS-RNTI indicate grants for direct UE-to-UE transmissions; and information for assigning IDS physical uplink control channel, IDS-PUCCH, for transmitting an IDS acknowledgement/negative acknowledgement, ACK/NACK, feedback to the network node using the IDS-PUCCH; signalling, by the first UE (102a, 410a, 610a), capabilities that indicate whether the first UE (102a, 410a, 610a) is able to receive IDS data and downlink data from a network node (112a, 112b, 405, 605) in the same subframe on different carriers, before the first UE receives the configuration information from the network node, wherein the signalled capabilities cause the network node to schedule the IDS data and the downlink data from the network node in the same subframe on different carriers; transmitting data directly to the second UE (102b, 410b, 610b) during the IDS. an IDS radio network temporary identifier, IDS-RNTI, whereby physical downlink control channel, PDCCH, ' messages related to an IDS are configured with the IDS-RNTI, and IDS resource allocations signaled in the PDCCH and configured with the IDS-RNTI indicate grants for direct UE-to-UE transmissions; and information for assigning IDS physical uplink control channel, IDS-PUCCH, for transmitting an IDS acknowledgement/negative acknowledgement, ACK/NACK, feedback to the network node using the IDS-PUCCH; signalling, by the first UE (102a, 410a, 610a), capabilities that indicate whether the first UE (102a, 410a, 610a) is able to receive IDS data and downlink data from a network node (112a, 112b, 405, 605) in the same subframe on different carriers, before the first UE receives the configuration information from the network node, wherein the signalled capabilities cause the network node to schedule the IDS data and the downlink data from the network node in the same subframe on different carriers; transmitting data directly to the second UE (102b, 410b, 610b) during the IDS.