Method for group change issues in MTC
AssigneeNEC Corporation
InventorsXiaowei Zhang, Anand Raghawa Prasad
Life of this patent
Estimating the term…
Abstract
A gateway (GW) is optimized for security management, when a group member of MTC device changes group. The gateway performs access control to determine if MTC device can move to the target group. When the change is successfully completed, the gateway allocates group key of the target group to MTC devices.
Claims18
A gateway being capable of relaying traffic between a plurality of communication devices and a network, the communication devices being grouped into at least two groups for communicating with the network, the gateway comprising:
- a first unit that receives from one communication device a request to change a group to which said one communication device belongs from one group to another group, the request including features of said one communication device;
- a second unit that determines whether or not the request is acceptable, by comparing the features with features to be supported by said another group;
- and
- a third unit that allocates, when it is determined that the request is acceptable, to said one communication device a group key of said another group for securely communicating with the gateway.
A method of controlling a gateway that can relay traffic between a plurality of communication devices and a network, the communication devices being grouped into at least two groups for communicating with the network, the method comprising:
- receiving from one communication device a request to change a group to which said one communication device belongs from one group to another group, the request including features of said one communication device;
- determining whether or not the request is acceptable, by comparing the features with features to be supported by said another group;
- and
- allocating, when it is determined that the request is acceptable, to said one communication device a group key of said another group for securely communicating with the gateway.
Dependencies are inferred from the claim text.