Method, device and system for acquiring access network information

Abstract

The embodiment of the invention provides a method for acquiring access network information. A home network selecting function entity in a home network of UE is set to be capable of communicating with a visited network selecting function entity in a visited network; the home network selecting function entity and the visited network selecting function entity of the UE are communicated to determine access network discovering and select auxiliary information for being transmitted to the UE, and then, the auxiliary information is transmitted to the UE. The embodiment of the invention also provides a system and a device for acquiring the access network information. Each embodiment of the invention enables the UE to acquire access network discovering and select auxiliary information, such as a visited place, and thus, the UE can select proper access networks to enable users to obtain better service.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and system for acquiring access network information. Background technique [0002] With the increasing demand for wireless communication services, more and more wireless communication technologies have entered or are entering into a practical stage. For example, (GSM / GPRS, Global System for Mobile communications / General Packet Radio System) system, (UMTS, Universal Mobile Telecommunications System) system, (WLAN, Wireless Local AreaNetwork) system have been widely used, and some are entering the practical stage (WiMAX, Worldwide Interoperability for Microwave Access) system, etc. [0003] For these wireless communication technologies, their wireless access technologies have different capabilities, characteristics and shortcomings. For example, the current GSM system can provide a wide range of mobility and good voice service quality, but ...

AI Technical Summary

Problems solved by technology

[0009] figure 1 The network selection function entity in the network can only provide access network information in a certain area, which has caused relatively large restrictions on the selection of a suitable access network for UEs in an environment where multiple wireless networks coexist.

That is to say, in some cases, the network selection functional entity in the network cannot provide the UE with the access network discovery and selection assistance information currently required by the UE

For example, when the UE roams from the home network to the visited network, the UE needs to know the auxiliary information of access network discovery and selection in the visited network, while the network selection functional entity in the home network can only obtain the inter-system mobility policy of the home operator, There is no access network information of the visited location, so that the UE cannot obtain the auxiliary information of access network discovery and selection of the visited location, and cannot select a suitable access network

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