top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

How does the eNB transfer data to a UE via WIFI(DL only)

+4 votes
423 views
How does the eNB transfer data to a UE via WIFI(DL only)
posted Feb 28, 2017 by Gnanendra Reddy

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

In LTE-WiFi aggregation user data IP packets flow through both LTE and Wi-Fi AP. Two new protocols are used for to achieve LTE-WiFi aggregation. Those new protocols are LWAAP and Xw. LWAAP works between UE and eNodeB while Xw protocol is used between WiFi AP and eNodeB.

eNodeB encapsulates user data in the form of PDCP PDUs within LWA-AP packets. After forming LWA-AP packets eNodeB uses GTP-U tunnel protocol to send these packets to Wi-Fi AP. WiFi AP removes GTP-U header and encapsulatesLWA-AP packets within the 802.11 radio frame.
This is the way to send packets from eNodeB to UE in the downlink direction.

answer Mar 1, 2017 by Vimal Kumar Mishra
...