A method in a network node, comprising: determining configuration information associated with a wireless device, the configuration information indicative of interference mitigation capabilities of the wireless device; determining based on the configuration information whether the wireless device is capable of blindly mitigating inter-cell interference of at least one signal other than cell-specific reference signals, CRS, by determining, based on the configuration information, whether assistance information may improve an ability of the wireless device to mitigate interference; determining whether the configuration information comprises an explicit indication from the wireless device whether or not the wireless device needs assistance information from the network node; wherein, when it is determined based on the configuration information that the wireless device is not capable of blindly mitigating inter-cell interference of at least one signal other than CRS, the method comprises: sending the assistance information to the wireless device in response to determining that the assistance information may improve the ability of the wireless device to mitigate interference, the assistance information comprising information used by the wireless device to mitigate interference; and wherein when it is determined based on the configuration information that that the wireless device is capable of blindly mitigating inter-cell interference of at least one signal other than CRS and when it is determined that the configuration information comprises an explicit indication from the wireless device indicating that the wireless device needs assistance information from the network node, the method comprises: sending the assistance information to the wireless device. determining configuration information associated with a wireless device, the configuration information indicative of interference mitigation capabilities of the wireless device; determining based on the configuration information whether the wireless device is capable of blindly mitigating inter-cell interference of at least one signal other than cell-specific reference signals, CRS, by determining, based on the configuration information, whether assistance information may improve an ability of the wireless device to mitigate interference; determining whether the configuration information comprises an explicit indication from the wireless device whether or not the wireless device needs assistance information from the network node; wherein, when it is determined based on the configuration information that the wireless device is not capable of blindly mitigating inter-cell interference of at least one signal other than CRS, the method comprises: sending the assistance information to the wireless device in response to determining that the assistance information may improve the ability of the wireless device to mitigate interference, the assistance information comprising information used by the wireless device to mitigate interference; and wherein when it is determined based on the configuration information that that the wireless device is capable of blindly mitigating inter-cell interference of at least one signal other than CRS and when it is determined that the configuration information comprises an explicit indication from the wireless device indicating that the wireless device needs assistance information from the network node, the method comprises: sending the assistance information to the wireless device.