US 12,336,037 B2
Seamless session handling with redundant deployment of policy control nodes
Shon Anil Lonkar, Maple Valley, WA (US)
Assigned to T-Mobile USA, Inc., Bellevue, WA (US)
Filed by T-Mobile USA, Inc., Bellevue, WA (US)
Filed on Feb. 9, 2022, as Appl. No. 17/667,924.
Prior Publication US 2023/0254925 A1, Aug. 10, 2023
Int. Cl. H04L 41/0894 (2022.01); H04L 61/503 (2022.01); H04L 65/1016 (2022.01); H04L 65/1069 (2022.01); H04W 60/00 (2009.01); H04W 72/04 (2023.01); H04W 76/18 (2018.01); H04W 92/18 (2009.01)
CPC H04W 76/18 (2018.02) [H04L 65/1069 (2013.01); H04W 92/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
receiving, by a first Policy and Charging Rules Function (PCRF) or a first Policy Control Function (PCF) communication node configured to provide policy control in a communication network, a request from a Packet Data Network Gateway (PGW) or a Session Management Function (SMF) node for establishing a communication session with a mobile device, determining, by the first PCRF or the first PCF communication node, that a failure to establish the communication session has occurred between the first PCRF or the first PCF communication node and the PGW or the SMF, wherein the communication network further includes one or more peer PCRF or one or more peer PCF communication nodes of the first PCRF or the first PCF communication node redundantly deployed in the communication network, wherein each of the one or more peer PCRF or the one or more peer PCF communication nodes is in communication with the PGW or the SMF node; and upon determining that the failure to establish the communication session has occurred, transmitting, by the first PCRF or the first PCF communication node, a notification to a peer PCRF or a peer PCF communication node that is separated from the first PCRF or the first PCF communication node, wherein the notification comprises a customized message indicating information about the failure to enable the peer PCRF or the peer PCF communication node to continue the establishing of the communication session with the mobile device, wherein the customized message is included in an Error-Message attribute-value pair (AVP).