| 摘要 |
Systems and methods for determining the home network carrier associated with a mobile station and authorizing the provision of services to the mobile stati on using centralized storage of mobile station and home network information. In one embodiment, when a roaming mobile station attempts to access services, identifying information for the mobile station is used by a local server to query a centralized DNS server that stores a mapping of mobile station identifying information to corresponding home networks. The centralized DNS server returns an identification of the home network of the roaming mobile user, and the home network then determines whether to grant or deny the mobi le station access to the local network. The mobile station identifying information may comprise an MSID such as an MIN, IRM or IMSI, which may serv e as part of the address for the query to the centralized DNS server.
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