US 11,792,761 B2
Session management function registration and deregistration
Jinguo Zhu, Guangdong (CN); Zhijun Li, Guangdong (CN); Xingyue Zhou, Guangdong (CN); and Tricci So, Guangdong (CN)
Assigned to ZTE Corporation, Shenzhen (CN)
Filed by ZTE Corporation, Guangdong (CN)
Filed on Jun. 3, 2022, as Appl. No. 17/831,979.
Application 17/831,979 is a continuation of application No. PCT/CN2019/123791, filed on Dec. 6, 2019.
Prior Publication US 2022/0408397 A1, Dec. 22, 2022
Int. Cl. H04W 76/11 (2018.01); H04W 60/06 (2009.01); H04W 80/10 (2009.01)
CPC H04W 60/06 (2013.01) [H04W 80/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of digital communication, comprising:
receiving, by a session management function operating in a communication network, a context update request to update a context of a protocol data unit (PDU) session for a wireless device that has been established by a different session management function;
transmitting, by the session management function, a registration request to a unified data management (UDM) function to register the context of the PDU session of the wireless device established by the different session management function with the UDM function, wherein the registration request identifies a set of session management functions that includes the session management function and the different session management function;
receiving, by the session management function, a registration response from the UDM function;
transmitting, by the session management function, a deregistration request to the UDM function to deregister the context of the PDU session of the wireless device established by the different session management function; and
receiving, by the session management function, a deregistration response message indicating removal of data associated with the registration request.