Access network information acquisition method, access network finding and selecting functional unit and terminal

A technology for access network information and access network discovery, which is applied in the fields of access network information acquisition, access network discovery and selection of functional units and terminals, and can solve problems affecting terminal handover efficiency and inability to obtain access network attribute information, etc.

Inactive Publication Date: 2011-05-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0039] The present invention is proposed to solve the problem that the UE cannot obtain the attribute information of the access network before the handover, which affects the termi...

Method used

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  • Access network information acquisition method, access network finding and selecting functional unit and terminal
  • Access network information acquisition method, access network finding and selecting functional unit and terminal
  • Access network information acquisition method, access network finding and selecting functional unit and terminal

Examples

Experimental program
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example 1

[0084] This example describes how UE obtains access network information from ANDSF. In this example, the UE visits the ANDSF through the S14 interface, uses the PULL mode to actively apply to the network, and triggers the ANDSF to send network information to the UE. Figure 8 It is a flowchart of Example 1 according to an embodiment of the present invention, such as Figure 8 As shown, the process includes the following steps:

[0085] Step 801: UE accesses the EPC system through a 3GPP access network or a non-3GPP access network.

[0086] Step 802: UE discovers ANDSF.

[0087] Step 803: UE sends a network access request message to ANDSF. Wherein, the message carries UE's access network type information (Access Type), UE capability information (UE Capabilities), and UE location information (UE Location). The UE capability information may carry the protocol type supported by the UE. If the UE capability information does not carry the protocol type that the UE can support, ...

example 2

[0100] This example describes the handover of the UE to a non-3GPP access system. Figure 9 It is a flowchart of Example 2 according to the embodiment of the present invention, such as Figure 9 As shown, the process includes the following steps:

[0101] Step 901: The terminal user has accessed the EPS through the 3GPP access system. Of course, the occurrence scenario may also be that the UE accesses the EPS through a non-3GPP access system, because the subsequent operations are similar, and details are not described here.

[0102] Step 902: The terminal needs to initiate handover for some reason, for example, the wireless signal strength of the current access network is not enough to support the current service and other reasons.

[0103] Step 903: The terminal visits ANDSF to obtain access networks that can be accessed. ANDSF visits AAA to obtain access network information according to the UE's current location and access network conditions. The method of obtaining inform...

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PUM

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Abstract

The invention discloses an access network information acquisition method, an access network fining and selecting functional unit and a terminal. The method comprises the following steps: the access network discovery and selection function (ANDSF) unit acquires attribute information of an access network supplied to the terminal from an authentication, authorization and accounting (AAA) server after receiving an access network request message from the terminal; and the ANDSF unit transmits information of access network to the terminal to be convenient for the terminal to select an access network to be accessed from access networks corresponding to the information of access network according to the information of access network, wherein the information of access network carries the attribute information of access network. The invention improves terminal switching efficiency and ensures service continuity.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for acquiring access network information, an access network discovery and selection function unit and a terminal. Background technique [0002] The Evolved Packet System (EPS) of the 3rd Generation Partnership Project (referred to as 3GPP) is formed by the Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, referred to as E-UTRAN), Mobility Management Entity (MME for short), Serving Gateway (S-GW for short), Packet Data Network Gateway (P-GW or PDN GW for short) ), Home Subscriber Server (HSS for short), Policy and Charging Rules Function (Policy and Charging Rules Function, PCRF for short) and other supporting nodes. [0003] figure 1 It is a schematic diagram of an EPS system and an access network architecture according to related technologies, such as figure 1 As shown, the EPS system supports the intercommunicat...

Claims

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Application Information

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IPC IPC(8): H04W48/08H04W48/18
CPCH04W48/08
Inventor 曲爱妍朱春晖
Owner ZTE CORP
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