Cell broadcast via encoded message to an embedded client

Abstract

A system for authorizing information services that are provided via broadcast messages to mobile stations. The broadcast messages are encrypted prior to being communicated to devices within a geographic area. The mobile stations are provided with a client application that retrieves cryptographic keys associated with the information services to which a customer is subscribed. When the mobile station receives encrypted broadcast messages, the client application determines if it has the cryptographic key to decrypt the message. If so, the information contained in the message is displayed. If not, then the message is ignored by the mobile station.

1 . A method of receiving of a communication at a mobile station communicatively connected to a wireless network, comprising:
 running a client application within a mobile station;   receiving authorization for a service;   receiving a broadcast communication from said wireless network directed to all mobile stations within a predetermined geographic area; and   displaying information contained in said communication in accordance with said authorization.   
   
   
       2 . The method of  claim 1 , said receiving authorization further comprises providing said mobile station a cryptographic key associated with said service. 
   
   
       3 . The method of  claim 2 , further comprising expiring said cryptographic key at a predetermined time. 
   
   
       4 . The method of  claim 2 , further comprising decrypting said communication using a cryptographic key stored in said mobile station to obtain said information. 
   
   
       5 . The method of  claim 4 , further comprising:
 retrieving additional information from said wireless network based on said information decrypted from said communication; and   displaying said additional information on said mobile station.   
   
   
       6 . The method of  claim 2 , further comprising instructing said mobile station to retrieve said cryptographic key from said wireless network via a one-to-one message. 
   
   
       7 . The method of  claim 6 , further comprising:
 provisioning said service at said wireless network in accordance with a customer request; and   communicating said one-to-one message as a result of said provisioning.   
   
   
       8 . A method of providing information to mobile stations in a geographic area, comprising:
 providing to predetermined ones of said mobile stations a cryptographic key associated with said information in accordance with a customer subscription;   encrypting said information;   broadcasting said encrypted information to said mobile stations in a one-to-many communication, said encrypted information being decrypted by said cryptographic key by said predetermined ones of said mobile stations.   
   
   
       9 . The method of  claim 8 , further comprising expiring said cryptographic key at a predetermined time. 
   
   
       10 . The method of  claim 8 , further comprising:
 receiving a request for said customer subscription; and   instructing a mobile station associated with said customer subscription to retrieve said cryptographic key using a one-to-one message.   
   
   
       11 . The method of  claim 8 , further comprising providing a client application that is downloaded to said predetermined ones of said mobile stations that accesses said cryptographic key to decrypt said information. 
   
   
       12 . The method of  claim 8 , further comprising broadcasting said information from a cell broadcast center. 
   
   
       13 . The method of  claim 8 , further comprising:
 receiving a request for additional information from said predetermined ones of said mobile stations after said predetermined ones of said mobile stations have decrypted said information; and   providing said additional information to said predetermined ones of said mobile stations as a one-to-one communication.   
   
   
       14 . The method of  claim 13 , wherein said additional information is multimedia content. 
   
   
       15 . A system for delivering content via a wireless network to a mobile station using a broadcast mechanism, comprising:
 a push proxy gateway (PPG);   a short message peer to peer (SMPP) router that receives SMPP messages from said push proxy gateway and converts said SMPP messages to cell broadcast messages;   a cell broadcast center that communicates said cell broadcast messages; and   a mobile station client that is provided to mobile stations to receive said cell broadcast messages.   
   
   
       16 . The system of  claim 15 , wherein said cell broadcast messages are encrypted. 
   
   
       17 . The system of  claim 16 , wherein said mobile station client accesses a cryptographic key to decrypt said cell broadcast messages. 
   
   
       18 . The system of  claim 17 , wherein said cryptographic key expires at a predetermined time. 
   
   
       19 . The system of  claim 15 , wherein a message is communicated to said mobile station client to update said mobile station client in accordance with a customer subscription to said content. 
   
   
       20 . The system of  claim 19 , wherein said message instructs said mobile station to fetch a cryptographic key associated with said content.