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Route selection method and functional network element

A technology of network elements and functions, applied in the field of routing methods and functional network elements, to achieve the effect of reducing access pressure

Inactive Publication Date: 2013-12-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the case where WLAN UE and 3GPP UE exist at the same time, how to ensure that it does not affect the related procedures of WLAN UE, there is no relevant research at present

Method used

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  • Route selection method and functional network element
  • Route selection method and functional network element
  • Route selection method and functional network element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] In this embodiment, it mainly describes the architecture diagram of the entire network when the UE accesses the EPC through a trusted WLAN. The central idea of ​​this architecture is: in the WLAN network, a WLAN access gateway is added to be responsible for message exchange between the control plane and the user plane between the WLAN network and the EPC network.

[0067] The difference between the network elements involved in this architecture and the network elements involved in the existing access network access to the existing 3GPP network is that a TWAG' is added in the WLAN network: TWAG' is responsible for the connection between the WLAN network and the EPC network. Intercommunication of control plane messages and user plane data. image 3 After introducing TWAG' in the present invention, a schematic diagram of UE accessing EPC architecture 1 through the WLAN S2a interface, such as image 3 As shown, under this network architecture, the key interfaces involved a...

Embodiment 2

[0072] In this embodiment, the process of 3GPP UE accessing 3GPP EPC through WLAN is mainly described. Among them, the EAP authentication process needs to be forwarded to WLAN AAA through TWAG', AP / RG acts as the EAP authenticator, and AC / BNG and TWAG' act as AAA agents. When the AC / BNG receives the service type determined by the 3GPPAAAA as allowing access to the EPC, it executes this embodiment. Figure 4 It is a flow chart of UE accessing EPC based on architecture 1 in Embodiment 1 of the present invention through WLAN S2a interface, and the process of UE accessing EPC through WLAN S2a interface includes the following steps:

[0073] Step 401: The UE and the WLAN network element perform non-3GPP-specific procedures, such as: link establishment, etc.;

[0074] Step 402: The UE may send an EAPOL-START message to the AP / RG to request authentication;

[0075] Step 403-Step 404: The AP / RG, as the EAP authenticator, will trigger the EAP authentication process to the UE. Wherei...

Embodiment 3

[0092] In this embodiment, the process is similar to the process in embodiment 2, except that the AP / RG does not serve as the EAP authenticator, but the AC / BNG serves as the EAP authenticator, and the AP / RG cannot perceive the relevant EAP authentication process. For other processes, refer to the relevant description of Embodiment 2. For details, see Figure 5 The flow shown is described in detail as follows:

[0093] Step 501: The UE and the WLAN network element perform non-3GPP-specific procedures, such as: link establishment, etc.;

[0094] Step 502: UE may send an EAPOL-START message to AC / BNG to request authentication;

[0095] Step 503-Step 504: AC / BNG, as the EAP authenticator, will trigger the EAP authentication process to the UE. Wherein, the UE carries the NAI in the EAP-RES / Identity message. After AC / BNG receives the EAP-RES / Identity message encapsulated by AAA, it can first judge whether it is a 3GPP UE according to the authentication type. If the authenticatio...

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Abstract

Disclosed is a routing selection method, which is applied to a converged network of a WLAN access network and a 3GPP core network. A functional network element is arranged between the WLAN access network and the 3GPP core network. The method comprises: when UE accesses through a WLAN access network, a functional network element forwarding to an AAA an authentication request message sent by the UE, and forwarding to an access network element of the WLAN access network the authentication response message sent by the AAA; and / or the functional network element receiving an IP address request message sent by the access network element of the WLAN access network. Also disclosed at the same time is a functional network element. The present invention can conduct routing selection for 3GPP UE according to the type of the accessing UE and the service type, thereby reducing the access pressure of a 3GPP network.

Description

technical field [0001] The present invention relates to route selection technology, in particular to a route selection method and a functional network element. Background technique [0002] The Evolved Packet System (EPS, Evolved Packet System) of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) consists of the Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network), mobile management Unit (MME, Mobility Management Entity), Serving Gateway (S-GW, Serving Gateway), Packet Data Network Gateway (P-GW, Packet Data Network Gateway) and Home Subscriber Server (HSS, Home Subscriber Server). [0003] figure 1 It is a schematic structural diagram of realizing intercommunication between a 3GPP network and a non-3GPP network in the prior art, such as figure 1 As shown, the EPS supports intercommunication with non-3GPP systems, wherein intercommunication with non-3GPP systems is realized through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02
CPCH04L29/12H04W12/06H04W12/033H04W12/037H04L61/50
Inventor 刘国燕尤建洁朱春晖吴瑟王霞余跃
Owner ZTE CORP
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