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PDN (Packet Data NetWork) connection establishing method, relevant equipment and system

A technology for connection establishment and gateway equipment, which is applied in the field of communication and can solve problems such as impracticability

Active Publication Date: 2010-08-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It is proposed in the prior art that UE (User Equipment, user equipment) can be on a 3GPP network (its core network is the core network of the above-mentioned wireless evolution network) and a non-3GPP network (its core network includes the PDN GW in the core network of the above-mentioned wireless evolution network) Simultaneous business needs, but the existing technology cannot realize simultaneous access of UE from multiple networks (such as 3GPP network and non-3GPP network) for the same APN (Access Point Name, access point name)

Method used

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  • PDN (Packet Data NetWork) connection establishing method, relevant equipment and system
  • PDN (Packet Data NetWork) connection establishing method, relevant equipment and system
  • PDN (Packet Data NetWork) connection establishing method, relevant equipment and system

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Embodiment 1

[0031] Embodiment 1 of the present invention provides a method for establishing a PDN connection, including:

[0032] When the user equipment UE establishes a PDN connection in the source network, and needs to establish a PDN connection in the target network for the same APN (AccessPoint Name, access point name), the gateway device receives a request sent by the user equipment UE to establish a PDN connection in the target network. A message, wherein the message requesting to establish a connection with the target network carries information about the UE's multi-access mode access mode;

[0033] Establishing a PDN connection for the UE according to the relevant information of the multi-access mode access mode of the UE.

[0034] The executor of this method may be PDN GW, or BBERF (Bearer Binding and Event Report Function, bearer binding and event reporting function point); wherein, BBERF may be S-GW in 3GPP, or an evolved packet in a non-3GPP network Data gateway, access gate...

Embodiment 2

[0038] refer to figure 2 , Embodiment 2 of the present invention provides a method for establishing a PDN connection, which is used for user equipment to access a 3GPP network while accessing a non-3GPP network. The method includes:

[0039] A1. The UE sends a PDN connection establishment request to the mobility management network element. The APN may be included in the request. If the APN is not included in the request, it means that a link of the default APN needs to be established. At the same time, the UE needs to carry information about the UE's multi-access mode access mode in the message, specifically indicating whether the PDN GW needs to allocate a new IP address or use the original IP address when the UE accesses in the multi-access mode. Basically, PDN link resources are established on the 3GPP side. The relevant information of the UE's multi-access mode access mode can be carried in a new message information element, or can be realized by extending the attachment...

Embodiment 3

[0074] refer to image 3 , Embodiment 3 of the present invention provides a method for establishing a PDN connection, which is used for user equipment to access a 3GPP network while accessing a non-3GPP network. The method includes:

[0075] Steps B1-B4 are the same as steps A1-A4 of Embodiment 1.

[0076] B5. The S-GW sends a gateway control session establishment request to the PCRF. According to different scenarios, the S-GW carries different instructions in the message:

[0077] Scenario A: The attach type IE indicates multi-access mode switch access, and requests to switch a certain PDN connection to the target network. The S-GW (BBERF) carries the user identifier, the PDN ID to be switched or The PDN type, the current access type of the user equipment, and the handover mode indication information element are used to indicate to the PCRF that the UE needs to handover the PDN connection to the target network, and the gateway control session establishment request can also c...

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Abstract

The embodiment of the invention provides a PDN (Packet Data NetWork) connection establishing method, relevant equipment and a system, wherein the PDN connection establishing method comprises the steps of: when UE (User Equipment) establishes a PDN connection in a source network and the PDN connection is established in a target network aiming at the same APN (Access Point Name), receiving a message requiring for establishing the PDN connection in the target network by a gateway device, wherein the message for requiring for establishing the PDN connection in the target network carries relevant information of a multi-access mode access way of the UE; and establishing the PDN connection under the same APN in the target network for the UE according to the relevant information of the multi-access mode access way of the UE. By using the technical scheme provided by the embodiment of the invention, the requirement for simultaneously accessing into different networks by the UE can be met.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for establishing a PDN connection for user equipment to access different access networks, related equipment and a system. Background technique [0002] refer to figure 1 , the core network of the wireless evolved network mainly includes three logical functional entities: the Mobility Management Entity (MME), the Serving Gateway (Serving Gateway, Serving GW), and the Packet Data Network Gateway (PDN Gateway, PDN GW), among which the MME Responsible for non-access stratum (Non-Access-Stratum, NAS) signaling and NAS signaling encryption, roaming, tracking and other functions, assigning user temporary identities, security functions, etc., it corresponds to the current Universal Mobile Telecommunication System (Universal Mobile Telecommunication System, UMTS) internal Serving GPRS Support Node (Serving GPRS Support Node, SGSN) control plane part. The Servin...

Claims

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Application Information

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IPC IPC(8): H04W74/00H04L12/56H04W76/02
Inventor 张艳平吴问付王珊珊胡颖
Owner HUAWEI TECH CO LTD
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