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A network device (eg, an evolved Node B (eNB), user equipment (UE) or the like) can split a 3GPP bearer in a multi-radio heterogeneous network of a radio access network (RAN) between a plurality of communication links. The plurality of communication links can comprise a 3GPP link and one or more other multi-radio links of the multi-radio heterogeneous network. The bearer can be split dynamically or statically based on a plurality of heterogeneous network metrics. The network device can further determine the proportions, or ratios of traffic data to be transmitted between the plurality of communication links based on the proportions of the 3GPP bearer split and heterogeneous metrics.