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Session establishment method, device and system

A technology of session establishment and relationship, applied in the direction of transmission system, connection management, electrical components, etc., can solve problems such as no related solutions

Active Publication Date: 2020-11-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since an access point name (APN) parameter is required to establish a packet data network (PDN) connection in a DCN, a protocol data unit (PDU) session is required when creating a protocol data unit (PDU) session in a network slice. Data network name (data network name, DNN) and single NSSAI (singleNSSAI, S-NSSAI), although in the existing protocol, APN and DNN are equivalent, however, in the terminal from the packet core network that supports the evolution of DCN When the (evolved packet core, EPC) switches to 5GC that supports network slicing, how to determine the S-NSSAI so that a PDU session can be established in the 5GC network slice according to the selected S-NSSAI, there is currently no relevant solution

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  • Session establishment method, device and system
  • Session establishment method, device and system
  • Session establishment method, device and system

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Embodiment Construction

[0117] In order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction of related technologies of the present application is given as follows.

[0118] NSSAI:

[0119] A plurality of S-NSSAIs are included in the NSSAI. The S-NSSAI consists of a service type (slice / service type, SST) and a slice differentiator (slice differentiator, SD). Among them, SST includes standardized and operator-defined types; SD is optional information supplementing SST to distinguish multiple network slices of the same SST. The types and functions of NSSAI defined in the 23.501 standard are shown in Table 1.

[0120] Table I

[0121]

[0122] 4G network and 5G network interworking architecture:

[0123] Such as figure 1 As shown in , it is a schematic diagram of the existing 4G network and 5G network interworking architecture. Among them, 4G network and 5G network share user plane function (user plane function, UPF) entity +...

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Abstract

Embodiments of the present application provide a session establishment method, device, and system, so that when a terminal switches from an EPC supporting DCN to a 5GC supporting network slicing, a PDU session can be established in the network slice of the 5GC according to the selected S-NSSAI. The method includes: the first mobility management entity obtains the information of the packet data network PDN connection established when the terminal accesses the packet core network EPC; the first mobility management entity obtains the information corresponding to the PDN connection according to the information of the PDN connection The single network slice selection auxiliary information S-NSSAI of the network slice, the S-NSSAI of the network slice corresponding to the PDN connection is used to indicate the network slice for establishing the packet data unit PDU session.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201710963960.1 and the title of "Session Establishment Method, Device and System" filed with the China Patent Office on October 16, 2017, and filed on November 27, 2017 in China Patent Office, the application number is 201711208402.0, the application name is "Session Establishment Method, Device and System", and submitted to the China Patent Office on May 21, 2018, the application number is 201810491244.2, the application name is "Session Establishment Method, Device and System" The priority of the Chinese patent application ", the entire content of which is incorporated in this application by reference. technical field [0002] The present application relates to the technical field of communications, and in particular to a method, device and system for establishing a session. Background technique [0003] Dedicated core network (DCN) is a dedicated network defined in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/14H04W76/10
CPCH04W76/10H04W36/0011H04W48/08H04L67/14H04W36/12H04W36/0022H04W36/0066H04W76/12H04W36/14
Inventor 景昊宗在峰
Owner HUAWEI TECH CO LTD