MOBILE COMMUNICATION SYSTEM

• US 20110207428A1
• Filed: 10/01/2010
• Published: 08/25/2011
• Est. Priority Date: 10/01/2009
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Hayashi, Sadafuku, Ueda, Yoshio
• Granted Patent: US 8,938,234 B2
• Time in Patent Office: Days
• US Class Current: 455/404.1
• CPC Class Codes: H04W 12/126 Anti-theft arrangements, e.g. protection against subscriber identity module [SIM] cloning
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

A mobile communication system of the present invention includes: a mobile station; a base station wirelessly communicating with the mobile station; and a gateway apparatus connected to the base station and a core network. The base station includes: first transmission means for transmitting a registration message for registering the mobile station in the gateway apparatus; and second transmission means for transmitting a message pertaining to establishment of an emergency call originated by the mobile station. The gateway apparatus includes: first reception means for receiving the registration message from the base station; second reception means for receiving an establishment message pertaining to establishment of the emergency call from the base station; and check means for checking consistency between the registration message and the establishment message.

Claims

1. A mobile communication system, comprising:

a mobile station;

a base station wirelessly communicating with the mobile station; and

a gateway apparatus connected to the base station and a core network,

wherein the base station comprises;

first transmission unit for transmitting a registration message for registering the mobile station in the gateway apparatus; and

second transmission unit for transmitting a message pertaining to establishment of an emergency call that is originated by the mobile station,

the gateway apparatus comprises;

first reception unit for receiving the registration message from the base station;

second reception unit for receiving an establishment message pertaining to establishment of the emergency call from the base station; and

check unit for checking the consistency between the registration message and the establishment message.

2. The mobile communication system according to claim 1,

wherein the mobile station further comprises

establishment unit for establishing an RRC connection for the emergency call, wherein

a check is performed by the check unit in order to prevent fraud in which the mobile station creates a normal call using the RRC connection for the emergency call.

3. The mobile communication system according to claim 1,

wherein the registration message is a UE REGISTER REQUEST message.

4. The mobile communication system according to claim 1,

wherein the establishment message is a message of an NAS (Non Access Stratum) protocol.

5. The mobile communication system according to claim 1,

wherein the check by the check unit is performed

in a case where a Registration Cause included in the registration message indicates an Emergency Call.

6. A gateway apparatus connecting a base station to a core network, comprising:

first reception unit receiving a registration message for registering a mobile station in the gateway apparatus from the base station;

second reception unit receiving an establishment message pertaining to an emergency call that is originated by the mobile station from the base station; and

check unit for checking the consistency between the registration message and the establishment message.

7. The gateway apparatus according to claim 6

wherein, in a case where the mobile station establishes an RRC connection for the emergency call,

a check is performed by the check unit in order to prevent fraud in which the mobile station creates a normal call using the RRC connection.

8. The gateway apparatus according to claim 6

wherein the registration message is a UE REGISTER REQUEST message.

9. The gateway apparatus according to claim 6

wherein the establishment message is a message of an NAS (Non Access Stratum) protocol.

10. The gateway apparatus according to claim 6

wherein the check by the check unit is performed

in a case where a Registration Cause included in the registration message indicates an Emergency Call.

11. A communication method by a mobile communication system comprising:

a mobile station;

a base station wirelessly communicating with the mobile station; and

a gateway apparatus connected to the base station and a core network,

wherein the base station transmits a registration message for registering the mobile station in the gateway apparatus,

the base station transmits a message pertaining to establishment of an emergency call that is originated by the mobile station,

the gateway apparatus receives the registration message from the base station,

the gateway apparatus receives an establishment message pertaining to establishment of the emergency call from the base station; and

the gateway apparatus performs a check of consistency between the registration message and the establishment message.

12. The communication method according to claim 11

wherein the mobile station establishes an RRC connection for the emergency call,

the check is performed in order to prevent fraud in which the mobile station creates a normal call using the RRC connection for the emergency call.

13. The communication method according to claim 11

wherein the registration message is a UE REGISTER REQUEST message.

14. The communication method according to claim 11

wherein the establishment message is a message of an NAS (Non Access Stratum) protocol.

15. The communication method according to claim 11

wherein the check is performed

in a case where a Registration Cause included in the registration message indicates an Emergency Call.

16. A communication method by a gateway apparatus connecting a base station to a core network, including:

receiving a registration message for registering a mobile station in the gateway apparatus from the base station;

receiving an establishment message pertaining to establishment of an emergency call that is originated by the mobile station from the base station; and

performing a check of consistency between the registration message and the establishment message.

17. The communication method according, to claim 16

wherein, in a case where the mobile station establishes an RRC connection for the emergency call,

the check is performed in order to prevent fraud in which the mobile station creates a normal call using the RRC connection for the emergency call.

18. The communication method according to claim 16

wherein the registration message is a UE REGISTER REQUEST message.

19. The communication method according to claim 16

wherein the establishment message is a message of an NAS (Non Access Stratum) protocol.

20. The communication method according to claim 16

wherein the check is performed

in a case where a Registration Cause included in the registration message indicates an Emergency Call.