Patent attributes
Apparatus and methods are provided for user-plane LWA PDU routing. In one novel aspect, LTE PDU packets are routed through a WLAN AP to a UE by encapsulation of the data packets. In one embodiment, a bridge/VLAN architecture is used. The UE identifies one or more Ethernet Frames received the WLAN interface as containing the PDCP PDUs by decoding the EtherType. In another embodiment, the WLAN terminated tunneling is used by decoding the EtherType of indicating the PDCP type. In another novel aspect, an UE-terminated tunneling is created. In one embodiment, the IP tunneling is used. In another embodiment, the GRE tunneling is used. The GRE header contains a KEY field to identify the packets as being the LWA packets. In yet another embodiment, the IPSec tunneling is used. The SPI of the header is used to identify the packets as being the LWA data packets.
