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

Claim 8:
9. A method of responding to a subscriber identity module (SIM) card information request sent from a wireless communication device at a network device, 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 the SIM card information request from the wireless communication device; and
(d) after the SIM card information request is received, sending, based on the SIM card information request and the database, a reply to the wireless communication device;
wherein:
when the SIM card information request comprises a request of a SIM card selection, an identity of a SIM card selected in the plurality of SIM cards and information to reach a SIM bank selected in the plurality of SIM banks are embedded into the reply;
the SIM card and the SIM bank are selected by the network device, and the SIM card is in the SIM bank;
when the SIM card information request comprises an authentication request of the SIM card selected, an authentication reply is embedded into the reply; and
the authentication reply is retrieved by the network device from the SIM card selected in the plurality of SIM cards.