SERVER AND METHOD, NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM, AND MOBILE CLIENT TERMINAL AND METHOD

• US 20120163603A1
• Filed: 09/06/2010
• Published: 06/28/2012
• Est. Priority Date: 09/14/2009
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Abe, Shinichiro, Arisawa, Shigeru, Usui, Takashi, Esaka, Seiji, Takada, Masayuki, Yamasuge, Hiroyuki, Sonoda, Shuhei
• Granted Patent: US 9,167,037 B2
• Time in Patent Office: Days
• US Class Current: 380/278
• CPC Class Codes: G01S 19/14 specially adapted for specific applications
• CPC Class Codes: H04L 63/107 wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 67/5681 Pre-fetching or pre-delivering data based on network characteristics
• CPC Class Codes: H04L 9/0819 Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) network architectures or network communication protocols for key distribution in a packet data network H04L63/062
• CPC Class Codes: H04W 12/082 using revocation of authorisation
• CPC Class Codes: H04W 12/126 Anti-theft arrangements, e.g. protection against subscriber identity module [SIM] cloning
• CPC Class Codes: H04W 12/37 Managing security policies for mobile devices or for controlling mobile applications
• CPC Class Codes: H04W 12/63 Location-dependent; Proximity-dependent
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 4/50 Service provisioning or reconfiguring

Abstract

Systems and methods for operating in connection with mobile devices are described. The mobile devices may move between online and offline areas. In some instances, a prediction may be made as to when a mobile device will enter an offline area. The prediction may be based on sensor information. Data or a key may be transferred to the mobile device prior to entering the offline area.

Claims

1. A server for operating in connection with a mobile client terminal as part of a communication network, the server comprising:

a processing unit;

an input configured to receive sensor information from the client terminal;

memory storing instructions which, when executed by the processing unit, cause the processing unit to determine a current location of the client terminal based at least partially on the sensor information and predict, based at least partially on the current location of the client terminal, a time at which the client terminal will enter an offline area; and

an output configured to transmit to the client terminal (a) data to be used by the client terminal while offline;

or (b) a key to decrypt data stored on the client terminal.

2. The server of claim 1, wherein the processing unit is further configured to, upon execution of the instructions stored in memory, analyze content received from the client terminal to determine a destination of the client terminal and, based at least partially on the current location of the client terminal and the destination of the client terminal, predict a path of movement of the client terminal.

3. The server of claim 2, wherein the processing unit is further configured to execute a communication prediction algorithm to compare communication information indicative of communication status against the predicted path of movement of the client terminal.

4. The server of claim 1, wherein the processing unit is configured to initiate transmission to the client terminal of (a) data to be used by the client terminal while offline prior to the predicted time at which the client terminal will enter the offline area.

5. The server of claim 1, wherein the processing unit is configured to initiate transmission to the client terminal of (b) a key to decrypt data stored on the client terminal prior to the predicted time at which the client terminal will enter the offline area.

6. A method of operating a server configured to communicate wirelessly with a mobile client terminal, the method comprising:

receiving, at the server, sensor information from the client terminal;

determining a current location of the client terminal by analyzing the sensor information;

predicting a time at which the client terminal will enter an offline area based, at least partially, on the current location of the client terminal; and

transferring, from the server to the client terminal prior to the predicted time at which the client terminal will enter the offline area, (a) data to be used by the client terminal while offline;

or (b) a key to decrypt data stored on the client terminal.

7. The method of claim 6, wherein predicting the time at which the client terminal will enter an offline area comprises:

(i) determining a destination of the client terminal;

(ii) determining, based at least partially on the current location of the client terminal and the destination of the client terminal, a predicted path of the client terminal; and

(iii) determining if and where the offline area is located on the predicted path of the client terminal.

8. The method of claim 7, wherein determining if and where the offline area is located on the predicted path of the client terminal comprises analyzincommunication information stored on the server and indicative of communication status along the predicted path.

9. A non-transitory computer readable storage medium encoded with instructions which, when executed by a server coupled to a client terminal via a network, cause the server to perform a method of operation comprising:

receiving, at the server, sensor information from the client terminal;

determining a current location of the client terminal by analyzing the sensor information;

predicting a time at which the client terminal will enter an offline area based, at least partially, on the current location of the client terminal; and

transferring, from the server to the client terminal prior to the predicted time at which the client terminal will enter the offline area, (a) data to be used by the client terminal while offline;

or (b) a key to decrypt data stored on the client terminal.

10. A mobile client terminal for operating in connection with a server as part of a communication network, the client terminal comprising:

a processing unit;

memory storing instructions which, when executed by the processing unit, cause sensor information to be obtained; and

an input configured to receive from the server, before a predicted time at which the client terminal will enter an offline area which is based at least partially upon the sensor information, (a) data to be used by the client terminal while offline, or (b) a key to decrypt data stored on the client terminal.

11. A method of operating a mobile client terminal, the method comprising:

storing content on the client terminal in an encrypted state;

receiving a decryption key from an external device;

decrypting the content using the decryption key;

providing the content while the client terminal is located in an offline area; and

deleting the decryption key upon the client terminal entering an online area.

12. The method of claim 11, wherein providing the content while the client terminal is located in an offline area comprises providing the content on a display of the client terminal.

13. The method of claim 11, further comprising transferring sensor information to the external device, and wherein receiving the decryption key from the external device is performed in response to transferring the sensor information.

14. The method of claim 13, further comprising transferring a public key to the external device, and wherein the decryption key is a common key encrypted with the public key.

15. The method of claim 14, further comprising generating a private key and decrypting the decryption key using the private key.

16. A non-transitory computer readable storage medium including instructions which, when executed, cause a mobile client terminal to perform a method of operation comprising:

storing content on the client terminal in an encrypted state;

receiving a decryption key from an external device;

decrypting the content using the decryption key;

providing the content while the client terminal is located in an offline area; and

deleting the decryption key upon the client terminal entering an online area.

17. A server for operating in connection with a mobile client terminal as part of a communication network, the server comprising:

a processing unit;

an input configured to receive sensor information from the client terminal;

memory storing instructions which, when executed by the processing unit, cause the processing unit to determine a current location of the client terminal based at least partially on the sensor information and predict, based at least partially on the current location of the client terminal, a time at which the client terminal will move from an offline area to an online area; and

an output configured to transmit to the client terminal after the predicted time at which the client terminal will move from the offline area to the online area, a request to delete (a) data transferred to the client terminal prior to the client terminal entering the offline area;

or (b) a key transferred to the client terminal prior to the client terminal entering the offline area to decrypt data stored on the client terminal.

18. A method of operating a server configured to communicate wirelessly with a mobile client terminal, the method comprising:

receiving, at the server, sensor information from the client terminal;

determining a current location of the client terminal by analyzing the sensor information;

predicting a time at which the client terminal will move from an offline area to an online area based, at least partially, on the current location of the client terminal; and

transferring, from the server to the client terminal after the predicted time at which the client terminal will move from the offline area to the online area, a request to delete (a) data transferred to the client terminal prior to the client terminal entering the offline area;

or (b) a key transferred to the client terminal prior to the client terminal entering the offline area to decrypt data stored on the client terminal.

19. A non-transitory computer readable storage medium encoded with instructions which, when executed by a server coupled to a client terminal via a network, cause the server to perform a method of operation comprising:

receiving, at the server, sensor information from the client terminal;

determining a current location of the client terminal by analyzing the sensor information;

predicting a time at which the client terminal will move from an offline area to an online area based, at least partially, on the current location of the client terminal; and

transferring, from the server to the client terminal after the predicted time at which the client terminal will move from the offline area to the online area, a request to delete (a) data transferred to the client terminal prior to the client terminal entering the offline area;

or (b) a key transferred to the client terminal prior to the client terminal entering the offline area to decrypt data stored on the client terminal.

20. A client operating in connection with a server as part of a communication network, the client comprising:

a processing unit; and

memory storing instructions which, when executed by the processing unit, cause sensor information to be obtained and cause the processing unit to delete, after a predicted time at which the client terminal is to move from an offline area to an online area, (a) data used by the client while in the offline area and/or (b) a key to decrypt data stored on the client.