US 12,647,878 B2Granted

Session management method according to application of user equipment policy in wireless communication system

AssigneeSamsung Electronics Co., Ltd.

InventorsHoyeon Lee, Sangsoo Jeong, Youngsung Kho

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Abstract

According to an embodiment of the present disclosure, a policy control function (PCF) entity for managing policies may be provided. The PCF entity may transmit, to a user equipment via an Access and Mobility Management Function (AMF), URSP information including first data network name (DNN) information, identify a triggering event for updating the URSP, transmit, to the user equipment via the AMF based on the identified triggering event, updated URSP information including second DNN information, transmit, when transmitting the updated URSP information including the second DNN information, a Session Management Function (SMF) selection management trigger message to the AMF, and receive a user equipment policy update request message from the AMF when a request from the AMF for at least one of a first DNN corresponding to the first DNN information or a third DNN is detected.

Claims11

Dependent claims

A policy control function (PCF) entity for controlling policies, the PCF entity comprising:

a transceiver;
and
at least one processor, wherein the at least one processor is configured to:
control the transceiver to transmit user equipment route selection policy (URSP) information including first data network name (DNN) information for a user equipment to an access and mobility management function (AMF);
identify a triggering event to update the URSP;
control the transceiver to transmit, updated URSP information including second DNN information for the user equipment based on the identified triggering event, to the AMF;
control the transceiver to transmit a session management function (SMF) selection management trigger policy to the AMF, when transmitting the updated URSP information including the second DNN information;
control the transceiver to receive a user equipment policy update request message from the AMF;
select a replacement DNN to be applied to the user equipment based on the received user equipment policy update request message;
and
control the transceiver to provide, to the AMF, the selected replacement DNN to be applied to the user equipment.

8 more elements

An access and mobility management function (AMF) entity for managing policies, the AMF entity comprising:

a transceiver;
and
at least one processor, wherein the at least one processor is configured to:
control the transceiver to receive a session management function (SMF) selection management trigger policy, when receiving updated URSP information including second DNN information from a policy control function (PCF),
control the transceiver to transmit the received updated URSP information to a user equipment,
control the transceiver to receive, from the user equipment, a protocol data unit (PDU) session establishment request message including user equipment- requested DNN information corresponding to a first DNN,
detect, based on the received PDU session establishment request message, the user equipment requesting the first DNN,
control the transceiver to transmit a user equipment policy update request message to the PCF, and
control the transceiver to receive, from the PCF, a replacement DNN to be applied to the user equipment selected based on the user equipment policy update request message,
wherein the selected replacement DNN to be applied to the user equipment is a DNN selected by the PCF.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/912,993Filed 29 Mar 2021
Priority: KR 10-2020-003780227 Mar 2020
Published: US 2023/0147538 A111 May 2023
Granted: 2 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04W 48/17
Access restriction ; Network selection; Access point selection: selecting a data network PoA [Point of Attachment]
H04L 67/14
Network arrangements or protocols for supporting network services or applications: session management
H04W 48/18
Access restriction ; Network selection; Access point selection: selecting a network or a communication service
H04W 8/08
Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of…:…