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Network node selection method and device

A technology of network nodes and network elements, which is applied in the field of communication and can solve problems such as data transmission failures

Active Publication Date: 2020-08-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among multiple UPF network elements deployed in the same area, only some UPF network elements may support satellite communication
When satellite communication is used as the backhaul link, the SMF network element selects the UPF network element according to the location of the terminal equipment. If the selected UPF network element does not support satellite communication, data transmission will fail

Method used

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  • Network node selection method and device

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Embodiment Construction

[0057] In the 5G network architecture, the terminal device accesses the data network through a packet data unit (PDU) session established between the terminal device and the data network (DN). When establishing a PDU session, the SMF network element selects the UPF network element to establish the PDU session. Afterwards, during the uplink data transmission process, the access network equipment that provides services for the terminal equipment receives the data from the terminal equipment and sends the data to the UPF network element; during the downlink data transmission process, the data sent by the UPF network element arrives at After the terminal device provides the service access network device, the access network device sends data to the terminal device.

[0058] When the UPF network element is used to send data, if a specific transmission capability is required between the access network device and the UPF network element to transmit data, both the access network device...

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Abstract

The invention provides a network node selection method and device, and an SMF network element obtains transmission capability information of access network equipment, and selects a UPF network elementsupporting at least one transmission capability contained in the transmission capability information for terminal equipment according to the transmission capability information of the access networkequipment. In this process, the SMF network element selects the UPF network element according to the transmission capability of the access network equipment by acquiring the transmission capability ofthe access network equipment, and the selected UPF network element supports the transmission capability adopted by the access network equipment, so that data can be successfully transmitted between the access network equipment and the UPF network element, and the success rate of data transmission is improved.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a method and device for selecting a network node. Background technique [0002] In the fifth generation (the 5th Generation, 5G) network architecture, a terminal device communicates with a core network through an access network device. The core network includes an access and mobility management function (access and mobility management function, AMF) network element, a user plane function (user plane function, UPF) network element, or a session management function (session management function, SMF) network element, etc. [0003] However, the transmission capability of the access network equipment and the transmission capability of the UPF network element are not always equal, that is, the transmission capability supported by the access network equipment is not supported by the UPF network element. For example, in the 5G network architectu...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W48/08H04W48/20
CPCH04W48/08H04W48/20H04W36/0033H04W48/18H04B7/1851H04W24/02H04W76/12H04W76/20H04M15/66H04W8/08
Inventor 吴义壮张万强倪慧
Owner HUAWEI TECH CO LTD
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