Apparatus, system and method for secure direct communication in proximity based services
AssigneeNEC Corporation
InventorsXiaowei Zhang, Anand Raghawa Prasad
Life of this patent
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Abstract
A mobile communication system includes a central processing unit coupled to a memory storing instructions for executing a User Equipment (UE) implemented by a transceiver and a controller that supports Proximity Services (ProSe), and a ProSe Function that supports the ProSe and communicates with the UE via a PC3 interface. The UE sends a message for a discovery to the ProSe Function via the PC3. The ProSe Function directly sends security information to the UE via the PC3. The UE directly sends a protected message to another UE on a PC5 interface using a key based on the security information.
Claims4
A User Equipment (UE) comprising:
- at least one processor;
- and
- at least one memory coupled to the at least one processor, the at least one memory storing instructions that, when executed by the at least one processor, cause the at least one processor to:
- receive a root key and a key identifier (ID) identifying the root key from a first network node for Proximity Services (ProSe);
- derive a session key based on the root key for protecting direct communication;
- and
- perform the direct communication between the UE and another UE connecting to a second network node for the ProSe,
- wherein the another UE derives the session key based on the root key identified by the key ID that is received from the second network node for the ProSe.
A method of a UE (User Equipment), the method comprising:
- receiving a root key and a key identifier (ID) identifying the root key from a first network node for Proximity Services (ProSe);
- deriving a session key based on the root key for protecting direct communication;
- and
- performing the direct communication between the UE and another UE connecting to a second network node for the ProSe,
- wherein the another UE derives the session key based on the root key identified by the key ID that is received from the second network node for the ProSe.
Dependencies are inferred from the claim text.