US 12,294,929 B2
Rapid user equipment route selection policy rule processing
Gregory Schumacher, Holliston, MA (US); Marouane Balmakhtar, Fairfax, VA (US); and Serge Manning, Plano, TX (US)
Assigned to T-Mobile Innovations LLC, Overland Park, KS (US)
Filed by T-Mobile Innovations LLC, Overland Park, KS (US)
Filed on May 2, 2022, as Appl. No. 17/734,553.
Prior Publication US 2023/0354143 A1, Nov. 2, 2023
Int. Cl. H04W 40/02 (2009.01); H04L 45/74 (2022.01)
CPC H04W 40/02 (2013.01) [H04L 45/74 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining an applicable routing policy based on user equipment route selection policy (URSP) rules for an established uplink protocol data unit (PDU) session, the PDU session established with a wireless device through a user plane function (UPF) of a core network, the UPF connecting with the wireless device over an access network;
storing, at the wireless device, uplink PDU session information with the established uplink PDU session in a cache;
examining subsequent uplink packets at the wireless device for uplink PDU session information;
checking the cache at the wireless device for an established PDU session with matching uplink PDU session information; and
routing, at the wireless device, the subsequent uplink packets to the established PDU session having the matching PDU session information, causing the subsequent uplink packet to be processed in accordance with the applicable routing policy as previously determined based on the URSP rules.