A method of inserting smf and amf entities

An entity and service scope technology, applied in the field of communication, can solve problems such as inability to effectively insert intermediate SMF

Active Publication Date: 2020-07-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a method for inserting an SMF and an AMF entity, so as to solve the problem that the existing method for inserting an intermediate SMF cannot effectively insert an intermediate SMF

Method used

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  • A method of inserting smf and amf entities
  • A method of inserting smf and amf entities
  • A method of inserting smf and amf entities

Examples

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Comparison scheme
Effect test

example 1

[0153] Please refer to figure 2 , represents a flow chart of the process of inserting an SMF entity in the first embodiment of the present invention. In Example 1, the anchor SMF entity determines that an intermediate SMF entity needs to be selected and indicates the AMF entity, and the UE triggers the process of inserting an SMF entity. During the establishment of the PDU session, the anchor SMF entity subscribes the location information of the UE to the AMF entity. The process of inserting an SMF entity in instance 1 includes the following steps:

[0154] Step 201: When the UE moves out of the currently allocated registration area, it sends a registration update request message to the AMF entity through the new access network RAN ​​base station;

[0155] Step 202: The AMF entity reports the current location information of the UE to the anchor SMF entity of each PDU session according to the PDU session information established by the UE; where the current location informati...

example 2

[0168] Please refer to image 3 , represents a flowchart of the process of inserting an SMF entity in the second embodiment of the present invention. In the second example, the anchor SMF entity determines that an intermediate SMF entity needs to be selected and instructs the AMF entity, and inserts the intermediate SMF after receiving the handover request message. The process of inserting an SMF entity in instance 2 includes the following steps:

[0169] Step 301: During the RAN handover process, the source base station sends a handover request message to the AMF entity;

[0170] Step 302: After receiving the handover request message, the AMF entity sends a PDU handover request message to the anchor SMF entity of each PDU session according to the PDU session information established by the UE; wherein, the PDU handover request message carries the current location information of the UE, The current location information of the UE may be the TAI information where the UE is curr...

example 3

[0183] Please refer to Figure 4 , represents a flow chart of the process of inserting an SMF entity in Example 3 of the present invention. In Example 3, the source NGRAN and the target NG RAN are switched based on the Xn interface, and the anchor SMF entity determines that an intermediate SMF entity needs to be selected and indicates the AMF entity, and inserts the intermediate SMF after receiving the N2 path switching request message. The process of inserting an SMF entity in Example 3 includes the following steps:

[0184]Step 401: During the handover process based on the Xn interface, the target base station sends an N2 path handover request message to the AMF entity;

[0185] Step 402: After receiving the N2 path switching request message, the AMF entity sends a message of the N11 interface to the anchor SMF entity of each PDU session according to the PDU session information established by the UE, which can carry the current location information of the UE, and the curren...

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Abstract

The present invention provides a method for inserting an SMF and an AMF entity, wherein the method for inserting an SMF includes: if the UE moves out of the service range of the first SMF entity of the first PDU session of the currently serving UE or if the UE needs to select an SMF entity , then use the relevant information of the UE to query the second SMF entity that can serve the UE, and use the second SMF entity to update the first PDU session. The solution of the present invention can avoid SMF entity query every time the UE location is updated, avoid frequent selection of SMF entities by AMF entities, and do not need to deploy AMF entities with consistent service scopes with SMF entities, thereby realizing effective insertion of SMF entities.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for inserting an SMF and an AMF entity. Background technique [0002] In the existing fifth-generation mobile communication system (5G, 5th Generation), due to the limited service range of the user plane function (UPF, UserPlane Function) entity, that is, the access network (AN, AccessNetwork) node that the UPF entity can directly connect to The number is limited, and the UPF entities that can be controlled by the session management function (SMF, Session Management Function) entity of the control plane are also limited, so the scope that the SMF entity can serve is limited. It is proposed in the prior art that when the user equipment (UE, User Equipment) moves out of the service range of the anchor UPF entity, an intermediate UPF entity needs to be inserted between the AN node and the anchor UPF entity for user plane data forwarding of the relay. However, when t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W60/00
CPCH04W36/0011H04W60/00H04W4/02H04W8/14H04W36/0016H04W36/12H04W76/22H04L65/40H04W76/12H04W36/32H04W80/10H04W88/18H04W76/15G06F16/903H04W36/0033H04W88/04H04W88/08H04W72/23
Inventor 王胡成
Owner DATANG MOBILE COMM EQUIP CO LTD
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