Method, device and system for performing access control judgment by core network

Abstract

A method, apparatus and system for implementing access control determination by a Core Network (CN) are disclosed. In this inventive solution, a Mobility Management Entity (MME) obtains subscriber access information required for implementation of the access control determination after the access mode of a Base Station (BS) has changed, and MME implements the access control determination to a corresponding subscriber according to the obtained subscriber access information, which enables CN to avoid collision with access control determination by the BS Gateway, without miss determination or error determination, and ensures that access control can be accurately implemented to subscribers with different Closed Subscriber Group (CSG) abilities and in the connection state after the access mode of BS has changed.

Description

technical field [0001] The present invention relates to the communication field, and in particular refers to a method, device and system for a core network to perform access control judgment on a connected user after the access mode of a base station is changed. Background technique [0002] Home base stations are small, low-power base stations that are deployed in indoor places such as homes and offices. The coverage of cellular wireless communication systems is insufficient. The advantages of femto base stations are affordable, convenient, low power output, plug and play, broadband access, and support for single-mode terminals. [0003] The femto base station may be applied in a third generation (3G, 3Generation) or long term evolution (LTE, Long Term Evolution) wireless communication network. In order to facilitate the management of the HNB, a new network element, namely the HNB gateway, is introduced into the wireless access network. The main functions performed by th...

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Problems solved by technology

[0011] For the case where the core network supports the CSG concept and the access control judgment points are different due to the different CSG capabilities of the UE, the specific processing is as follows: the access mode of the home base station is changed from the mixed mode or the open mode to the closed mode, The femto base station will notify the femto base station gateway and the mobility management entity of the changed access mode, that is, the current access mode; the femto base station gateway uses the correspondence between the user identity and the base station for all users that do not have CSG capabilities and are in the connected state. Although the mobility management entity can determine all the currently connected users through the HNB ID reported by the HNB or all the cell IDs corresponding to the HNB, the mobility management entity cannot The CSG capability of the user is identified, so that it is impossible to distinguish which users should be re-executed for access control judgment, and then conflict with the access control judgment of the home base station gateway or cause missed judgments or misjudgments

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