Abstract:
The present invention relates to communication technologies and discloses a method and an apparatus for protecting security of data, so as to solve the problem of the prior art in which the security of data transmission between a communication terminal which has a characteristic of small data transmission and the network cannot be guaranteed. Information relevant to security context is stored if a communication terminal has a characteristic of small data transmission; current security context is obtained according to the information relevant to security context; and security protection of communication data is performed by employing the current security context. The embodiments of the present invention may be applied to a communication system having a characteristic of small data transmission, such as an MTC and the like.
Abstract:
Embodiments of the present invention provide a method for accessing a communications network by a terminal, an apparatus, and a communications system, relate to the communications field, and can effectively reduce a resource waste on a network side that is caused when WLCP is triggered by a malicious application on a terminal. A first message sent by a second device is received, where the first message includes a second message and an authentication parameter, the authentication parameter is a token or a User Datagram Protocol UDP port number, and the second message includes the encrypted authentication parameter; or the first message includes a second message, and the second message includes an encrypted authentication parameter; or the first message includes a second message and an authentication parameter; and the second message is sent to a terminal.
Abstract:
The present invention relates to the field of communications, and in particular, to a processing method for minimization of drive tests, a network device, and a communications system. The method includes: obtaining, by a first network device, a virtual identity, where the virtual identity is corresponding to a real identity of a terminal; and sending, by the first network device, the virtual identity of the terminal performing minimization of drive tests and minimization of drive tests information, where the minimization of drive tests information includes at least one of a minimization of drive tests result and a trace recording session reference. According to the present invention, some measurement results can be mapped to same UE without exposing user privacy.
Abstract:
A method and a related device for generating a group key are provided. A group ID of a group to which an MTC device belongs and a group communication root key related to a security key are received from an MME, where the security key is corresponding to the group ID; a group key corresponding to the group ID is generated according to the group communication root key; and a generating parameter used to generate the group key is sent to the MTC device, so that the MTC device generates the group key according to the group key generating parameter and a security key saved in the MTC device. Therefore, a base station only needs to maintain a same group key for a same group, thereby reducing the operation complexity of the base station.
Abstract:
Disclosed is a method for negotiating machine type communication (MTC) device group algorithms, including: selecting a negotiated group encryption algorithm and a negotiated group integrity algorithm from group encryption algorithms and group integrity algorithms supported by an MTC device; sending a security mode command message or a radio resource control (RRC) connection reconfiguration message to the MTC device, wherein the security mode command message or the RRC connection reconfiguration message carries the negotiated group encryption algorithm and the negotiated group integrity algorithm. The method disclosed in this invention enables the MTC devices to realize the encryption and the integrity protection of communication contents when performing group communication.