An example method can include receiving information identifying a quality of service (QoS) flow for a communication session involving a user equipment (UE). The information can include a QoS profile and a QoS flow identifier (QFI). The method can include identifying, from a QoS profile, a QoS configuration identifier associated with the QoS flow and selecting a data radio bearer (DRB) for the communications associated with the QoS flow. The DRB can be selected based on a mapping of a plurality of DRBs to a plurality of QoS flows, and the mapping can be based on corresponding QoS configuration identifiers of the plurality of QoS flows. The method can include assigning the QoS flow to the selected DRB by adding the QFI of the QoS flow to the mapping relative to the selected DRB and causing the communications associated with the QoS flow to be transmitted using the selected DRB.