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

Abstract

The invention discloses a method, a device and a system for performing access control judgment by a core network. In the scheme of the invention, after the access mode of a base station is changed, a mobility management entity acquires subscriber access information on which the access control judgment needs performing and executes the access control judgment on corresponding subscribers according to the acquired subscriber access information, so that the core network can avoid collisions with the access control judgment of a base station gateway, prevent the conditions of judgment omission and misjudgment and ensure connected subscribers with different kinds of closed subscriber group (CSG) capacity can accurately finish access control after the access mode of the base station is 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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