A receiver (UE1, UE2, RX), wherein the receiver (UE1, UE2, RX) is configured to receive a data signal, the data signal comprising a plurality of frames, the frame using intra-band carrier aggregation, CA, and the data signal including a plurality of component carriers (162 1, 162 2, 162 3), wherein a first component carrier (162 1) is used to transmit a frame having a first format with a predefined duration in a time domain, a number of symbols in the time domain and a bandwidth in a frequency domain, wherein a second component carrier (162 2) and/or a third component carrier (162 3) is used to transmit a frame having a second format with a predefined duration in the time domain, a number of symbols in the time domain and a bandwidth in the frequency domain, the first format and the second format being different, wherein the receiver (UE1, UE2, RX) comprises a signal processing device configured to process the symbols of the plurality of frames having the first format and the second format, wherein the first component carrier (162 1) comprises a plurality of aggregated carriers spanning a first frequency band used to transmit an LTE frame, the LTE frame having a transmission time interval, TTI, equal to a length of the frame, wherein the second component carrier (162 2) and/or the third component carrier (162 3) comprises a plurality of aggregated carriers spanning a second frequency band and/or a third frequency band, which are used to transmit ultra-low delay, ULD, frames, the LTE frame and the ULD frames having different transmission time intervals, TTIs, wherein the UE is configured to use the LTE frame as an access point to synchronize and to discover where to find the second and/or third component carriers (162 2, 162 3) transmitting the ULD frame, and wherein the signal processing device is configured to decode a band (1641, 1642) which includes the second and/or third component carriers (162 2, 162 3) and a part of the first component carrier (162 1) so that a first part of the first component carrier (162 1) is skipped. wherein the receiver (UE1, UE2, RX) is configured to receive a data signal, the data signal comprising a plurality of frames, the frame using intra-band carrier aggregation, CA, and the data signal including a plurality of component carriers (162 1, 162 2, 162 3), wherein a first component carrier (162 1) is used to transmit a frame having a first format with a predefined duration in a time domain, a number of symbols in the time domain and a bandwidth in a frequency domain, wherein a second component carrier (162 2) and/or a third component carrier (162 3) is used to transmit a frame having a second format with a predefined duration in the time domain, a number of symbols in the time domain and a bandwidth in the frequency domain, the first format and the second format being different, wherein the receiver (UE1, UE2, RX) comprises a signal processing device configured to process the symbols of the plurality of frames having the first format and the second format, wherein the first component carrier (162 1) comprises a plurality of aggregated carriers spanning a first frequency band used to transmit an LTE frame, the LTE frame having a transmission time interval, TTI, equal to a length of the frame, wherein the second component carrier (162 2) and/or the third component carrier (162 3) comprises a plurality of aggregated carriers spanning a second frequency band and/or a third frequency band, which are used to transmit ultra-low delay, ULD, frames, the LTE frame and the ULD frames having different transmission time intervals, TTIs, wherein the UE is configured to use the LTE frame as an access point to synchronize and to discover where to find the second and/or third component carriers (162 2, 162 3) transmitting the ULD frame, and wherein the signal processing device is configured to decode a band (1641, 1642) which includes the second and/or third component carriers (162 2, 162 3) and a part of the first component carrier (162 1) so that a first part of the first component carrier (162 1) is skipped.