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If there are multiple DRB's with LWA enabled,how does the UE distinguish received data from Wifi between these bearers?

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If there are multiple DRB's with LWA enabled,how does the UE distinguish received data from Wifi between these bearers?
posted Feb 28, 2017 by Gnanendra Reddy

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1 Answer

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In LWA, eNodeB sends few PDCP PDUs over the LTE network and others over the Wi-Fi link. While sending PDCP PDUs over the Wi-Fi link, eNodeB adds DRB ID to the packet and forms LWA-AP PDU.
When LWA-AP of the UE side receives the packet, it comes to know which packets belong to which DRB. After getting these PDCP PDUs over both LTE and Wi-Fi link, PDCP at the UE does re-ordering if required and then rest of things are same as it does for LTE network.

answer Mar 1, 2017 by Vimal Kumar Mishra
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