Section: A.29 Monitor of user data transmission over Xw interface for non-collocated LWA
Content: In the non-collocated LWA scenario, the Xw user plane interface (Xw-U) is defined between eNB and WT. The Xw-U interface supports flow control based on feedback from WT. The Xw-U interface is used to deliver LWA PDUs (user data) between eNB and WT for a UE. The user data For LWA, the S1-U terminates in the eNB and, if Xw-U user data bearers are associated with E-RABs for which the LWA bearer option is configured, the user plane data is transferred from eNB to WT using the Xw-U interface. The E-UTRAN capacity needs to be determined with the user data transmitted over Xw interface into account, including the volume of the user data transmitted or received over Xw interface for non-collocated LWA, the number of UEs associated with WLAN and the number of UEs actually with user data transferred over Xw interface.