Patent ID: 11950321
Assignee: PISMO LABS TECHNOLOGY LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A subscriber identity module (SIM) card directory server, comprising:
at least one processing unit; and
at least one non-transitory computer readable storage medium storing program instructions configured to cause the at least one processing unit to perform a method comprising:
(a) retrieving a status of a plurality of SIM cards from a plurality of SIM banks;
(b) maintaining a database with the status of the plurality of SIM cards;
(c) receiving a SIM card information request from a wireless communication device:
when the SIM card information request comprises a request of a SIM card selection:
(i) selecting a SIM card in the plurality of SIM cards and a SIM bank in the plurality of SIM banks; wherein the SIM card is in the SIM bank; and
(ii) embedding an identity of the SIM card and information to reach the SIM bank into a reply; and

when the SIM card information request comprises an authentication request of the SIM card selected:
(i) retrieving an authentication reply from the SIM card selected in the plurality of SIM cards; and
(ii) embedding the authentication reply into the reply; and

(d) after the SIM card information request is received, sending, based on the SIM card information request and the database, the reply to the wireless communication device.