Methods and apparatuses are disclosed for communication resource configurations for dual connectivity. In one embodiment, a wireless device is configured to receive an indication of a first Uplink-Downlink, UL-DL, configuration; compare the first UL-DL configuration to a reference UL-DL configuration and determine whether a communication direction of at least one communication resource indicated in the first UL-DL configuration matches a communication direction of at least one corresponding communication resource indicated by the reference UL-DL configuration; and based on the comparison of the reference UL-DL configuration to the first UL-DL configuration, determine that the at least one communication resource is to be used for one of a Long Term Evolution, LTE, radio access network and a New Radio, NR, access network.