A base station (102, 102A) comprising: a radio; and a processing element communicatively coupled to the radio; wherein the radio and the processing element are configured to: establish a radio bearer (502, 802, 804) with a wireless user equipment, UE, (106, 106A-N, 614, 714, 812) device according to a first radio access technology, RAT; determine whether the radio bearer (502, 802, 804) supports offloading to a second RAT and whether the radio bearer (502, 802, 804) supports a split bearer configuration between the first RAT and the second RAT; if the radio bearer (502, 802, 804) supports offloading to the second RAT and radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812), offload the radio bearer (502, 802, 804) from the first RAT to the second RAT; and if the radio bearer (502, 802, 804) supports a split bearer configuration between the first RAT and the second RAT and radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812), split the radio bearer (502, 802, 804) such that some data (604, 608, 610, 704, 708, 710) of the radio bearer (502, 802, 804) is exchanged between the base station (102, 102A) and the UE (106, 106A-N, 614, 714, 812) via the first RAT and some data (604, 608, 610, 704, 708, 710) of the radio bearer (502, 802, 804) is exchanged with the UE (106, 106A-N, 614, 714, 812) via the second RAT, wherein the radio and the processing element are further configured to: receive an indication from the UE (106, 106A-N, 614, 714, 812) that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812); and determine that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812) based on the indication from the UE (106, 106A-N, 614, 714, 812). a radio; and a processing element communicatively coupled to the radio; wherein the radio and the processing element are configured to: establish a radio bearer (502, 802, 804) with a wireless user equipment, UE, (106, 106A-N, 614, 714, 812) device according to a first radio access technology, RAT; determine whether the radio bearer (502, 802, 804) supports offloading to a second RAT and whether the radio bearer (502, 802, 804) supports a split bearer configuration between the first RAT and the second RAT; if the radio bearer (502, 802, 804) supports offloading to the second RAT and radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812), offload the radio bearer (502, 802, 804) from the first RAT to the second RAT; and if the radio bearer (502, 802, 804) supports a split bearer configuration between the first RAT and the second RAT and radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812), split the radio bearer (502, 802, 804) such that some data (604, 608, 610, 704, 708, 710) of the radio bearer (502, 802, 804) is exchanged between the base station (102, 102A) and the UE (106, 106A-N, 614, 714, 812) via the first RAT and some data (604, 608, 610, 704, 708, 710) of the radio bearer (502, 802, 804) is exchanged with the UE (106, 106A-N, 614, 714, 812) via the second RAT, wherein the radio and the processing element are further configured to: receive an indication from the UE (106, 106A-N, 614, 714, 812) that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812); and determine that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812) based on the indication from the UE (106, 106A-N, 614, 714, 812). establish a radio bearer (502, 802, 804) with a wireless user equipment, UE, (106, 106A-N, 614, 714, 812) device according to a first radio access technology, RAT; determine whether the radio bearer (502, 802, 804) supports offloading to a second RAT and whether the radio bearer (502, 802, 804) supports a split bearer configuration between the first RAT and the second RAT; if the radio bearer (502, 802, 804) supports offloading to the second RAT and radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812), offload the radio bearer (502, 802, 804) from the first RAT to the second RAT; and if the radio bearer (502, 802, 804) supports a split bearer configuration between the first RAT and the second RAT and radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812), split the radio bearer (502, 802, 804) such that some data (604, 608, 610, 704, 708, 710) of the radio bearer (502, 802, 804) is exchanged between the base station (102, 102A) and the UE (106, 106A-N, 614, 714, 812) via the first RAT and some data (604, 608, 610, 704, 708, 710) of the radio bearer (502, 802, 804) is exchanged with the UE (106, 106A-N, 614, 714, 812) via the second RAT, wherein the radio and the processing element are further configured to: receive an indication from the UE (106, 106A-N, 614, 714, 812) that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812); and determine that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812) based on the indication from the UE (106, 106A-N, 614, 714, 812). receive an indication from the UE (106, 106A-N, 614, 714, 812) that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812); and determine that radio resources according to the second RAT are available to the UE (106, 106A-N, 614, 714, 812) based on the indication from the UE (106, 106A-N, 614, 714, 812).