US 12,477,424 B2
Extended 5G local area network interworking with a home network and change of access network for 5G LAN connected devices
Debashish Purkayastha, Collegeville, PA (US); Robert Gazda, Spring City, PA (US); Michel Roy, Candiac (CA); and Saad Ahmad, Montreal (CA)
Assigned to INTERDIGITAL PATENT HOLDINGS, INC., Wilmington, DE (US)
Appl. No. 17/915,227
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
PCT Filed Apr. 1, 2021, PCT No. PCT/US2021/025406
§ 371(c)(1), (2) Date Sep. 28, 2022,
PCT Pub. No. WO2021/202891, PCT Pub. Date Oct. 7, 2021.
Claims priority of provisional application 63/053,029, filed on Jul. 17, 2020.
Claims priority of provisional application 63/004,109, filed on Apr. 2, 2020.
Prior Publication US 2023/0164641 A1, May 25, 2023
Int. Cl. H04W 36/14 (2009.01); H04W 36/00 (2009.01); H04W 36/02 (2009.01)
CPC H04W 36/14 (2013.01) [H04W 36/0022 (2013.01); H04W 36/023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a user plane function, UPF, the method comprising:
receiving first information including first and second instruction elements, IEs, the first IE indicating a first identifier of a wireless device, the first identifier being associated with a 5G local area network, 5G LAN, the second IE indicating an action to buffer data intended for the wireless device, wherein the first and the second IEs are received in response to or after the wireless device becomes unavailable to the 5G LAN;
buffering the data intended for the wireless device, the data buffered by the UPF;
receiving second information including third and fourth IEs, the third IE indicating a second identifier of the wireless device, the second identifier being associated with a second LAN, the fourth IE indicating a second action to stop buffering the data intended for the wireless device, wherein the third and fourth IEs are received in response to or after the wireless device is associated with the second LAN;
encapsulating, using the second identifier, at least a portion of the buffered data intended for the wireless device; and
transmitting the encapsulated buffered data to the wireless device associated with the second LAN.