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A kind of UPF selection method and device

A technology for location information and business applications, applied in the field of communication, can solve problems such as inaccurate UPF

Active Publication Date: 2020-12-04
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In order to solve the above-mentioned inaccurate problem of UPF selection by parameters such as DNN, an embodiment of the present invention proposes a UPF selection method and a corresponding UPF selection device

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  • A kind of UPF selection method and device
  • A kind of UPF selection method and device
  • A kind of UPF selection method and device

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] refer to image 3 , which shows a flow chart of the steps of an embodiment of a UPF selection method of the present invention, which may specifically include the following steps:

[0039] Step 301, the SMF judges whether the target RAN node is connected to the current UPF;

[0040] In the area covered by the RAN node connected to the UPF, the UPF serving the UE PDU session does not change, and this area is called the UPF service area. The UPF service area is composed of one or more tracking areas. The function of selecting UPF is performed by the SMF. When the UE moves across different UPF service areas, the SMF needs to reselect the UPF for the UE.

[0041] In the embodiment of the present invention, the user terminal ca...

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Abstract

The embodiment of the present invention provides a UPF selection method and device, the method includes: SMF judges whether the target RAN node is connected to the current UPF; if not, then judges that the user terminal moves out of the current UPF service area; The NRF sends a resource acquisition request; the resource response message includes: a UPF list; the UPF list includes a UPF address and a list of service application IDs supported by the UPF; the SMF receives the resource response message fed back by the NRF; Whether the current service application ID carried by the user terminal belongs to the list of service application IDs supported by the UPF; if so, connect the user terminal to the target UPF. The embodiment of the present invention overcomes the inaccurate problem of using parameters such as DNN to select UPF in the current 5G.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a UPF selection method and a UPF selection device. Background technique [0002] In the 5G system, the entity UPF (User Plane Function) is lowered to a position close to the access network, with the purpose of shortening the delay of some specific services and improving the service experience of users. The UPF sinking deployment will be limited to a certain small area. Users who move within a small range move in this area, and the network can satisfy the user experience. However, some users move continuously over a large range, and it is inevitable to cross the sinking UPF area. This involves the issue of UPF reselection. [0003] For example, a user driving on a highway is using a low-latency Internet of Vehicles service, and the UPF related to the Internet of Vehicles service is deployed at the edge of the access network. In this case, usually multiple sunken U...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/08
CPCH04W48/08H04W36/12H04W40/36H04W48/17H04W76/12H04W76/11H04W8/26H04W48/16H04W48/18
Inventor 习建德
Owner DATANG MOBILE COMM EQUIP CO LTD
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