Method for implementing local access and system thereof

摘要

The disclosure discloses a method for implementing local access, which includes: after user terminal initiates a local access and a mobile management unit determines that the local connection can be established for the user terminal, the mobile management unit acquires local access gateway information through a Domain Name System (DNS) server. The disclosure further discloses a system for implementing local access, correspondingly. By providing a specific implementation solution of inquiring the local access gateway, the disclosure ensures selection between the core network gateway and the local access gateway according to a respective scenario, thus properly and effectively implementing the local access function implemented by the user terminal through the local access gateway.

主权项

1. A method for implementing local access, comprising:
when a local connection is to be established, constructing, by a mobile management unit, Fully Qualified Domain Name (FQDN) according to a used Access Point Name (APN) and at least one of a base station identity, a local access identifier, a Closed Subscriber Group (CSG) identifier, a location identifier, and a tracking area/routing area identity; inquiring, by the mobile management unit, local access gateway information from a Domain Name System (DNS) server by using the constructed FQDN as an input parameter; returning, by the DNS server, the local access gateway information to the mobile management unit; or, constructing, by a mobile management unit, FQDN according to a used APN; indicating, by the mobile management unit, in a first flag that at least one of a base station identity, a local access identifier, a CSG identifier, a location identifier, and a tracking area/routing area identity is to be included, wherein the first flag carries at least one of the base station identity, the local access identifier, the CSG identifier, location information, and the tracking area/routing area identity; inquiring, by the mobile management unit, local access gateway information from a DNS server by using the constructed FQDN and the first flag as an input parameter; returning, by the DNS server, the gateway information to the mobile management unit; or, constructing, by a mobile management unit, FQDN according to a used APN; inquiring, by the mobile management unit, local access gateway information from a DNS server by using the constructed FQDN as an input parameter; returning, by the DNS server, the gateway information to the mobile management unit, wherein the gateway information comprises at least one of: information regarding to whether the access gateway supports local access, CSG information in an access gateway coverage, a tracking area/routing area identity in the access gateway coverage, and a location identifier in the access gateway coverage; and selecting, by the mobile management unit, one local access gateway based on the gateway information, to establish the local connection; wherein the DNS server returns the local access gateway information, based on a constructional request containing the constructed FQDN and the input parameter, to the mobile management unit.