In the uplink and for the PDUs sent over Wi-Fi, the LWAAP entity in the UE generates LWAAP PDU containing a DRB identity. The LWA supports split bearer operation where the PDCP sublayer handles sequential delivery of upper-layer PDUs based on the reordering procedure introduced for dual con- nectivity. An LWA UE may be configured by the eNB to send PDCP status report or LWA status report in cases where feedback from WT is not available. Note that only RLC AM and RLC UM can be configured for an LWA bearer. The LTE RAN does not simulta- neously configure LWA with dual connectivity, LWIP, or RAN-controlled LTE-Wi-Fi interworking for the same UE. If LWA and RAN-assisted Wi-Fi interworking are simulta- neously configured for the same UE in RRC_CONNECTED, the UE only utilizes LWA. For LWA bearer, if the data available for transmission is greater than or equal to a thresh- old configured by LTE RAN, the UE decides which PDCP PDUs are sent over Wi-Fi or LTE links. If the data available is below the threshold, the UE transmits PDCP PDUs on LTE or Wi-Fi as configured by LTE RAN. For each LWA DRB, LTE RAN may configure the IEEE 802.11 access category value to be used for the PDCP PDUs that are sent over Wi-Fi in the uplink. Operation in Unlicensed and Shared Spectrum 893 In the non-co-located LWA scenario, Xw user-plane interface (Xw-U) is defined between eNB and WT. The Xw- interface supports flow control based on feedback from WT. The flow con- trol function is applied in the downlink when an E-UTRAN radio access bearer (E-RAB) is mapped to an LWA bearer, that is, the flow control information is provided by the WT to the eNB to control the downlink user data flow to the WT for the LWA bearer. The operation, administration and maintenance (OAM) configures the eNB with the information of whether the Xw downlink delivery status provided by a connected WT concerns LWAAP PDUs successfully delivered to the UE or successfully transferred toward the UE. The Xw-U interface is used to deliver LWAAP PDUs between eNB and WT. In an LW