US Patent No. 11,032,872

APPARATUS AND METHOD FOR DELETING SESSION CONTEXT


Patent No. 11,032,872
Issue Date June 08, 2021
Title Apparatus And Method For Deleting Session Context
Inventorship Anni Wei, Shenzhen (CN)
Yizhuang Wu, Beijing (CN)
Chunshan Xiong, Shenzhen (CN)
Assignee HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)

Claim of US Patent No. 11,032,872

11. A communications system comprising:a session management function entity; and
a first device including a processor, a transmitter, and receiver, wherein the first device receives from the receiver a delete request message, wherein the delete request message is used to instruct the processor of the first device to trigger releasing a packet data unit (PDU) session context that is not deleted after a terminal is abnormally deregistered and to send via the transmitter the PDU session release request to the session management function entity, wherein the PDU session release request is used to instruct the session management function entity to delete the PDU session context stored in the session management function entity;
wherein the session management function entity receives the PDU session release request and is configured to delete, based on the PDU session release request, the PDU session context that is stored in the session management function entity.