Abstract:
This invention discloses a method for security communication of carrier aggregation between base stations, which method comprises receiving, by a user equipment, a first message to add a cell controlled by a secondary base station as a service cell sent by a primary base station; and creating, by the user equipment, a security key for communication with cells controlled by the secondary base station according to security context of the primary base station and the first message. This invention further discloses the corresponding user equipment and base stations. Implementation of the method and apparatus according to the present invention makes it possible to effectively protect security of data transmission of the air interface and to avoid attacks on air interface security.
Abstract:
By using a method for coordination between base stations, one base station allocates a resource to user equipment in a better manner with reference to resource configuration information saved in the base station and resource configuration information of another base station. The method provided in the embodiments of the present invention includes: acquiring, by a first base station, resource configuration information of a first cell, where the first cell is a cell served by the first base station; receiving resource configuration information of a second cell sent by a second base station, where the second cell is a cell served by the second base station; and allocating a resource to user equipment according to the resource configuration information of the first cell and the resource configuration information of the second cell, so that the user equipment communicates with the first cell and the second cell.
Abstract:
Embodiments of the present invention provide a signal processing method and a terminal. The method includes: receiving a control signal. Channel state information between a coordinated base station and the terminal and between the serving base station and the terminal is determined. Information is about determined time difference or information about a phase difference of arrival between signals sent by the coordinated base station and the serving base station at the terminal according to the channel state information. Adjustment information is sent to the serving base station so that the serving base station adjusts the sending time, phase, or pre-coding manner of the signal according to the adjustment information.
Abstract:
This invention discloses a method for security communication of carrier aggregation between base stations, which method comprises receiving, by a user equipment, a first message to add a cell controlled by a secondary base station as a service cell sent by a primary base station; and creating, by the user equipment, a security key for communication with cells controlled by the secondary base station according to security context of the primary base station and the first message. This invention further discloses the corresponding user equipment and base stations. Implementation of the method and apparatus according to the present invention makes it possible to effectively protect security of data transmission of the air interface and to avoid attacks on air interface security.
Abstract:
Embodiments disclose a cell status changing method. The method includes receiving, by user equipment, a first indication sent by a master base station, where the first indication is used to indicate a status change of a first cell of the master base station or a status change of a second cell of a secondary base station; and performing activation on the first cell or the second cell according to the first indication, or performing deactivation on the first cell or the second cell according to the first indication. In embodiments, both the master base station and the secondary base station serve the UE and undergo carrier aggregation, and the UE may obtain, by using the received first indication sent by the master base station, an active state or an inactive state of a serving cell that belongs to a base station that serves the UE.
Abstract:
An artificial intelligence (AI) protocol layer of a first access network device generates an AI parameter, and sends the AI parameter to a terminal device. Then, the first access network device receives, from the terminal device, AI data obtained based on the AI parameter. The AI protocol layer of the first access network device is an upper layer of a radio resource control (RRC) protocol layer of the first access network device, an AI protocol layer of the terminal device is an upper layer of an RRC protocol layer of the terminal device, and the AI parameter indicates the AI data that needs to be obtained and an AI data obtaining manner.
Abstract:
A communication method and a related device, the method including receiving a radio access capability of a terminal device, detecting whether a target radio access capability the same as the received radio access capability of the terminal device exists in a terminal device access capability set, where the terminal device access capability set is a set of radio access capability information corresponding to radio access capabilities, and, when the target radio access capability exists in the terminal device access capability set, indexing second access capability indication information in a context of the terminal device to radio access capability information corresponding to the target radio access capability.
Abstract:
A method includes receiving a first message from a first master node. The first message includes an identifier of a first candidate primary secondary cell (PSCell) or an identifier of first configuration information of the first candidate PSCell. The first candidate PSCell is included in both a first PSCell list and a second PSCell list. Alternatively, the first message includes delta configuration information of a second candidate PSCell in the second PSCell list. The first configuration information of the first candidate PSCell includes an addition/change condition and a configuration of the first candidate PSCell. The first PSCell list includes one or more candidate PSCells configured by the first master node for a terminal. The second PSCell list includes one or more candidate PSCells configured by a second master node for the terminal. The method also includes adding a target PSCell or changing from an original PSCell to the target PSCell.
Abstract:
In a method, a first band combination set reported by a terminal device may include a first band combination and a second band combination, the first band combination is a fallback band combination that has a same capability as the second band combination, and the first band combination and the second band combination correspond to different radio access technology types.
Abstract:
This application provides a communication method and apparatus, and a system, to protect security and user privacy in a data transmission process. After determining to establish a radio resource control (RRC) connection in anonymous mode, a terminal device sends a request to an access network device, to request to establish the RRC connection in anonymous mode, so that the access network device establishes the RRC connection in anonymous mode to the terminal device. The solutions in this application may be applied to a communications system, for example, may be applied to a 5th generation 5G network.