Strategy control method and device supporting multi-homed protocol data unit session

A protocol data unit and policy control technology, which is applied in the field of communication and can solve problems such as multi-homing PDU session policy control

Inactive Publication Date: 2018-08-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Although the application of multi-homing PDU sessions in the process of UE mobility and service offloading has been studied in related technologies, how to implement policy control on multi-homing PDU sessions is still an unsolved problem

Method used

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  • Strategy control method and device supporting multi-homed protocol data unit session
  • Strategy control method and device supporting multi-homed protocol data unit session
  • Strategy control method and device supporting multi-homed protocol data unit session

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] like image 3 As shown, a policy control method supporting multi-homing protocol data unit sessions, including:

[0094] S310, the policy control function PCF receives the notification message sent by the session management function SMF to the PCF after introducing a fork point for the protocol data unit PDU session, and the notification message carries the indication information that the PDU session is a multi-homing PDU session , and the first IP address newly allocated for the user equipment UE;

[0095] S320. The PCF formulates a first policy for the PDU session and sends the first policy to the SMF;

[0096] Wherein, the fork point is used to send the uplink data packet whose source address is the first IP address to the first anchor user plane function UPF selected by the SMF when introducing the fork point, and send the source address The uplink data packet for the second IP address is sent to the second anchor point UPF selected by the SMF when the PDU session...

Embodiment 2

[0117] like Figure 4 As shown, a policy control method supporting multi-homing protocol data unit sessions, including:

[0118] S410, the session management function SMF determines to introduce a fork point for the protocol data unit PDU session;

[0119] S420, the session management function SMF sends a notification message to the policy control function PCF, the notification message carrying the indication information that the PDU session is a multi-homing PDU session, and the first IP address newly allocated for the user equipment UE;

[0120] Wherein, the fork point is used to send the uplink data packet whose source address is the first IP address to the first anchor user plane function UPF selected by the SMF when introducing the fork point, and send the source address The uplink data packet for the second IP address is sent to the second anchor point UPF selected by the SMF when the PDU session is established, and the second IP address is the SMF for the UE when the P...

Embodiment 3

[0127] like Figure 5 As shown, a policy control device supporting multi-homing protocol data unit sessions is applied to the policy control function PCF, including:

[0128] The message receiving module 501 is configured to receive a notification message sent by the session management function SMF to the PCF after introducing a bifurcation point for the protocol data unit PDU session, the notification message carrying an indication that the PDU session is a multi-homing PDU session information, and the first IP address newly assigned to the user equipment UE;

[0129] A policy formulation and delivery module 502, configured to formulate a first policy for the PDU session and deliver the first policy to the SMF;

[0130] Wherein, the fork point is used to send the uplink data packet whose source address is the first IP address to the first anchor user plane function UPF selected by the SMF when introducing the fork point, and send the source address The uplink data packet fo...

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Abstract

The invention discloses a strategy control method supporting a multi-homed protocol data unit session. The method comprises the steps as follows: a PCF receives a notification message sent by an SMF to the PCF after a branching point is introduced into a PDU session, wherein the carried PDU session is indication information of the multi-homed PDU session, and a first IP address newly distributed for UE; the PCF makes a first strategy for the PDU session and distributes the first strategy to the SMF, wherein the branching point is used for sending an uplink data packet of which the source address is the first IP address to a first anchoring point UPF selected by the SMF when the branching point is introduced, and sending an uplink data packet of which the source address is a second IP address to a second anchoring point UPF selected by the SMF when the PDU session is built, wherein the second IP address is distributed by the SMF to the UE when the PDU is built. According to the technical scheme provided by the invention, the strategy control of the multi-homed protocol data unit session can be achieved.

Description

technical field [0001] The invention relates to communication technology, in particular to a policy control method and device for supporting multi-homed (Multi-Homed) protocol data unit (PDU) sessions. Background technique [0002] At present, the industry is researching the next-generation wireless communication system, that is, the fifth-generation mobile communication technology (5th-generation, referred to as 5G), such as figure 1 As shown, in the 5G architecture, the functions of the main functional entities are as follows: [0003] The base station is mainly responsible for the air interface resource scheduling of the terminal access network and the connection management of the air interface; [0004] The authentication service function is mainly responsible for authenticating and authorizing the access of user equipment (User Equipment, referred to as UE); [0005] Unified Data Manager (UDM for short), which is mainly responsible for saving the user's contract data;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W28/02H04W28/12H04W28/18
CPCH04W24/02H04W28/02H04W28/12H04W28/18H04W28/0284
Inventor 周晓云
Owner ZTE CORP
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