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Relocation method and device, medium and equipment of pdu session anchor point

A technology of relocation and anchor point, applied in the field of wireless communication, can solve the problems of large delay, signaling overhead, long service interruption time, etc., and achieve the effect of improving resource utilization efficiency

Active Publication Date: 2020-08-14
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the single PDU session anchor point relocation scheme of the PDU session in SSC2 mode is to release the old PDU session first and then establish a new PDU session. However, releasing the old session and then establishing a new session will cause relatively large delay and signaling overhead. Longer business interruption

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  • Relocation method and device, medium and equipment of pdu session anchor point
  • Relocation method and device, medium and equipment of pdu session anchor point
  • Relocation method and device, medium and equipment of pdu session anchor point

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Embodiment Construction

[0036] In the prior art, the PDU session type includes IPv4 type, IPv6 type, Ethernet (Ethernet) type, and unstructured (Unstructured) type, and of course it does not rule out future expansion by 3GPP. If the PDU session type is IPv6 type, the SMF node can assign one or more IPv6 prefixes (IPv6 Prefix) to the user terminal according to the specific situation, and send them to the user terminal through the UPF node.

[0037]Currently, 3GPP defines three different SSC modes, which are SSC1 mode, SSC2 mode and SSC3 mode in sequence. For SSC1 mode, after the PDU session anchor point is established, no matter which access technology is used, the PDU session anchor point remains unchanged. If the PDU session is of IP type, the IP address remains unchanged. For SSC2 mode, before the user terminal establishes a connection with the new PDU session anchor point, the old PDU session can be disconnected. If the PDU session is of IP type, the IP address of the user terminal may change or r...

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Abstract

A relocation method and device, readable storage medium and equipment for a PDU session anchor point, the relocation method includes: when deciding to initiate relocation of the anchor point, selecting a new PDU session anchor point; The information is sent to the new PDU session anchor point; the core network tunnel is obtained, and the core network tunnel information is sent to the current access network, so that the current access network updates the core network tunnel according to the core network tunnel information and communicates with the core network tunnel The above-mentioned new PDU session anchor establishes a connection. The above solution can reduce the time delay and signaling overhead of single PSA relocation in SSC2 mode, and shorten the service interruption time.

Description

technical field [0001] The embodiments of the present invention relate to the field of wireless communication, and in particular to a method and device, medium and equipment for relocating a PDU session anchor. Background technique [0002] User equipment (UE) is connected to the 5G core network through the access network, and connected to other nodes of the 5G core network through the access mobility management (AMF) node of the 5G core network, such as the session management function (SMF) node, etc. . Data is transmitted through User Plane Function (UPF) nodes and Digital Network (DN). [0003] A protocol data unit (Protocol Data Unit, PDU) session can be connected to the data network through one or more UPF nodes through different N6 interfaces, and the UPF node corresponding to the N6 interface acts as a PDU session anchor (PDUSession Anchor, PSA) effect. [0004] In the 5G network, the session type of PDU includes IPv4, IPv6 and other types. When the session type o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/12H04W76/30H04L29/12
CPCH04L61/5014H04L2101/659
Inventor 周宗明
Owner SPREADTRUM COMM (SHANGHAI) CO LTD