Security management method and apparatus for group communication in mobile communication system
First Claim
1. A security management method for group communication performed by a server in a mobile communication system, the method comprising:
- receiving a security key including a user identification security key;
generating a session security key for session protection in a group communication;
mapping the session security key to a group identity for identifying a specific group to which a user equipment (UE) using the group communication belongs, wherein the session security key includes information on the specific group to which the UE belongs;
transmitting the group identity and the session security key to the UE, the session security key being ciphered using the user identification security key;
generating a traffic key for protection of traffic, the traffic key ciphered using the session security key, wherein the traffic key includes information on the specific group to which the traffic key belongs; and
transmitting the group identity and the traffic key to the UE,wherein the traffic key is deciphered by using the session security key at the UE.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a security management method and an apparatus for group communication when a terminal interacts and communicates with a mobile communication system. The security management method for group communication performed in a server, which manages the group communication in the mobile communication system according to one embodiment of the present invention, includes the steps of: generating a session security key for session protection in the group communication, and mapping the session security key to a group identifier for identifying a specific group to which a terminal using the group communication belongs; transmitting the group identifier and the session security key to the terminal; and generating a traffic key for protecting traffic and transmitting the group identifier and the traffic key to the terminal.
21 Citations
22 Claims
-
1. A security management method for group communication performed by a server in a mobile communication system, the method comprising:
-
receiving a security key including a user identification security key; generating a session security key for session protection in a group communication; mapping the session security key to a group identity for identifying a specific group to which a user equipment (UE) using the group communication belongs, wherein the session security key includes information on the specific group to which the UE belongs; transmitting the group identity and the session security key to the UE, the session security key being ciphered using the user identification security key; generating a traffic key for protection of traffic, the traffic key ciphered using the session security key, wherein the traffic key includes information on the specific group to which the traffic key belongs; and transmitting the group identity and the traffic key to the UE, wherein the traffic key is deciphered by using the session security key at the UE. - View Dependent Claims (2, 3, 4, 5, 6, 21)
-
-
7. A server in a mobile communication system, the server comprising:
-
a communication interface configured to transmit and receive data in the mobile communication system; and a controller configured to; control the communication interface to receive a security key including a user identification security key; generate a session security key for session protection in a group communication; map the session security key for session protection to a group identity for identifying a specific group to which a user equipment (UE) using the group communication belongs, wherein the session security key includes information on the specific group to which the UE belongs; control the communication interface to transmit the group identity and the session security key to the UE, the transmitted session security key being ciphered using the user identification security key; generate a traffic key for protection of traffic, the traffic key ciphered using the session security key, wherein the traffic key includes information on the specific group to which the traffic key belongs; and control the communication interface to transmit the group identity and the traffic key to the UE, wherein the traffic key is deciphered by using the session security key at the UE. - View Dependent Claims (16, 17, 18, 19, 20)
-
-
8. A security management method by a user equipment (UE) in a mobile communication system, the method comprising:
-
transmitting information about a specific group to which the UE using a group communication belongs, to a server that manages a group communication; receiving a session security key for the group communication, wherein the received session security key is ciphered using a user identification security key, wherein the session security key is mapped to a group identity for identifying a specific group to which a UE using the group communication belongs, and wherein the session security key includes information on the specific group; receiving a traffic key for protection of traffic from the server that has received the information about the specific group, the traffic key ciphered using the session security key, wherein the traffic key includes information on the specific group to which the traffic key belongs; deciphering the traffic key using the received session security key; and performing the group communication through the server using the deciphered traffic key. - View Dependent Claims (9, 10, 11, 22)
-
-
12. A user equipment (UE) in a mobile communication system, the UE comprises:
-
a transceiver configured to transmit and receive data in the mobile communication system; and a controller configured to; control the transceiver to transmit information about a specific group to which the UE using a group communication belongs, to a server that manages the group communication; control the transceiver to receive a session security key for the group communication, wherein the received session security key is ciphered using a user identification security key, wherein the session security key is mapped to a group identity for identifying a specific group to which a UE using the group communication belongs, and wherein the session security key includes information on the specific group; control the transceiver to receive a traffic key for protection of traffic from the server that has received the information about the specific group, the traffic key ciphered using the session security key, wherein the traffic key includes information on the specific group to which the traffic key belongs; decipher the traffic key using the received session security key; and perform the group communication through the server using the deciphered traffic key. - View Dependent Claims (13, 14, 15)
-
Specification