A method for communicating performed by a wireless device within a time division duplexed, TDD, communications session, the method comprising: • communicating a filter bank multi-carrier, FBMC, frame (720, 730, 740) over an air interface of a wireless network, wherein a frame duration of the FBMC frame is an integer multiple of a duration of an orthogonal frequency division multiple access, OFDMA, frame element (711, 710, 701) in an OFDMA frame communicated in the wireless network or in a neighboring wireless network, wherein the communicating step further comprises: ∘ detecting a first FBMC frame over a frequency resource during a first period, the first FBMC frame including a first time window, a second time window and a first FBMC block, the first and second time windows (1009, 1011) adjoining in the time domain to different ends of the first FBMC block, wherein the first and second time windows (1009, 1011) are produced from a circularly convolved filtering modulation of the first FBMC block, and the first time window is provided before the first FBMC block in the time domain and the second time window is provided after the first FBMC block in the time domain; and ∘ transmitting a second FBMC frame over the frequency resource during a second period, wherein the second FBMC frame includes a second FBMC block, a third time window and a fourth time window, the third and fourth time windows (1019, 1021) adjoining in the time domain to different ends of the second FBMC block, wherein the third and fourth time windows (1019, 1021) are produced from circularly a convolved filtering modulation of the second FBMC block, and the third time window is provided before the second FBMC block in the time domain and the fourth time window is provided after the second FBMC block in the time domain, wherein at least a portion of the second time window and a portion of the third time window are communicated over common time-frequency resources, wherein the frame duration of the FBMC frame is adjusted by modifying a degree of overlap of the second and third time windows (1011, 1019). • communicating a filter bank multi-carrier, FBMC, frame (720, 730, 740) over an air interface of a wireless network, wherein a frame duration of the FBMC frame is an integer multiple of a duration of an orthogonal frequency division multiple access, OFDMA, frame element (711, 710, 701) in an OFDMA frame communicated in the wireless network or in a neighboring wireless network, wherein the communicating step further comprises: ∘ detecting a first FBMC frame over a frequency resource during a first period, the first FBMC frame including a first time window, a second time window and a first FBMC block, the first and second time windows (1009, 1011) adjoining in the time domain to different ends of the first FBMC block, wherein the first and second time windows (1009, 1011) are produced from a circularly convolved filtering modulation of the first FBMC block, and the first time window is provided before the first FBMC block in the time domain and the second time window is provided after the first FBMC block in the time domain; and ∘ transmitting a second FBMC frame over the frequency resource during a second period, wherein the second FBMC frame includes a second FBMC block, a third time window and a fourth time window, the third and fourth time windows (1019, 1021) adjoining in the time domain to different ends of the second FBMC block, wherein the third and fourth time windows (1019, 1021) are produced from circularly a convolved filtering modulation of the second FBMC block, and the third time window is provided before the second FBMC block in the time domain and the fourth time window is provided after the second FBMC block in the time domain, wherein at least a portion of the second time window and a portion of the third time window are communicated over common time-frequency resources, wherein the frame duration of the FBMC frame is adjusted by modifying a degree of overlap of the second and third time windows (1011, 1019). ∘ detecting a first FBMC frame over a frequency resource during a first period, the first FBMC frame including a first time window, a second time window and a first FBMC block, the first and second time windows (1009, 1011) adjoining in the time domain to different ends of the first FBMC block, wherein the first and second time windows (1009, 1011) are produced from a circularly convolved filtering modulation of the first FBMC block, and the first time window is provided before the first FBMC block in the time domain and the second time window is provided after the first FBMC block in the time domain; and ∘ transmitting a second FBMC frame over the frequency resource during a second period, wherein the second FBMC frame includes a second FBMC block, a third time window and a fourth time window, the third and fourth time windows (1019, 1021) adjoining in the time domain to different ends of the second FBMC block, wherein the third and fourth time windows (1019, 1021) are produced from circularly a convolved filtering modulation of the second FBMC block, and the third time window is provided before the second FBMC block in the time domain and the fourth time window is provided after the second FBMC block in the time domain,