Abstract: A beam weight obtaining method and an apparatus. An aggregation path is generated by using energy of a plurality of paths to help improve quality of a generated beam, thereby improving an SNR and a capacity of a terminal device. The method includes: a network device obtains a plurality of paths that meet a multipath aggregation condition, where the multipath aggregation condition includes one or more of the following conditions: a condition that every two paths in the plurality of paths need to meet in space, and a condition that every two paths in the plurality of paths need to meet in power. The network device determines aggregation information based on the plurality of paths, where the aggregation information includes information required by the network device to generate an aggregation path corresponding to the plurality of paths.

Abstract: The present disclosure relates to coordinated multipoint wireless communications methods. One example method includes predicting a first delay difference between receiving, by a terminal device, downlink data from a beam A of a first node and receiving, by the terminal device, the downlink data from a beam B of a second node, where the terminal device is located in a coverage area in which the beam A intersects with the beam B, and determining a first adjustment time period based on the first delay difference, where the first adjustment time period is used to adjust a transmission time in which the first node transmits the downlink data to the terminal device by using the beam A.

Abstract: A beam weight obtaining method and an apparatus. An aggregation path is generated by using energy of a plurality of paths to help improve quality of a generated beam, thereby improving an SNR and a capacity of a terminal device. The method includes: a network device obtains a plurality of paths that meet a multipath aggregation condition, where the multipath aggregation condition includes one or more of the following conditions: a condition that every two paths in the plurality of paths need to meet in space, and a condition that every two paths in the plurality of paths need to meet in power. The network device determines aggregation information based on the plurality of paths, where the aggregation information includes information required by the network device to generate an aggregation path corresponding to the plurality of paths.

Abstract: This application provides a beam generation method and an apparatus, to help improve precision of estimating a spatial direction of a terminal device. The method includes: A network device determines whether spatial directions of N beams converge to a spatial direction of a terminal device, where N is an integer greater than or equal to 3; and generates a data transmission beam when the spatial directions of the N beams converge to the spatial direction of the terminal device, where the data transmission beam is capable of being aligned with a center of coverage of the N beams, and that the spatial directions of the N beams converge to the spatial direction of the terminal device means that measurement results of the N beams meet a preset condition.

Abstract: A data transmission method is provided to expand coverage of a broadcast channel, including: determining, by a base station, a plurality of data blocks carried on N broadcast channels, where an ith broadcast channel in the N broadcast channels corresponds to an ith antenna port (group) in N antenna ports (group); scrambling, by the base station, the data blocks carried on the N broadcast channels, to obtain scrambled code blocks carried on the N broadcast channels; and sending, by the base station on different time resource units by respectively using the N antenna ports, corresponding scrambled code blocks carried on the broadcast channels, or sending, by the base station on different time resource units by respectively using the N antenna port groups, corresponding scrambled code blocks carried on the broadcast channels.

Abstract: Example methods and apparatus for switching an analog beam are described. One example method includes transmitting a data channel by a terminal by using a first analog beam. The terminal determines that a second analog beam is a target beam to be switched to. The terminal transmits a related signal of the data channel by using the second analog beam. The terminal transmits a data channel by using the first analog beam. The terminal switches from the first analog beam to the second analog beam to transmit the data channel in response to determining that a specified condition is met.

Abstract: Embodiments are disclosed of a hybrid automatic repeat request feedback method and apparatus, and relates to the field of communications technologies. The hybrid automatic repeat request feedback method is applied to a receive end. After receiving data information sent by a transmit end, the receive end may determine, when target data in the data information is not checked, a measurement value of the target data, then generate feedback information based on the measurement value, and subsequently, send the feedback information to the transmit end, so that the transmit end can determine, based on the feedback information, whether the target data needs to be retransmitted.

Abstract: A data transmission method is provided to expand coverage of a broadcast channel, including: determining, by a base station, a plurality of data blocks carried on N broadcast channels, where an ith broadcast channel in the N broadcast channels corresponds to an ith antenna port (group) in N antenna ports (group); scrambling, by the base station, the data blocks carried on the N broadcast channels, to obtain scrambled code blocks carried on the N broadcast channels; and sending, by the base station on different time resource units by respectively using the N antenna ports, corresponding scrambled code blocks carried on the broadcast channels, or sending, by the base station on different time resource units by respectively using the N antenna port groups, corresponding scrambled code blocks carried on the broadcast channels.

Abstract: Embodiments of the present invention provide a data transmission method and device. The method includes: when a resource position of a first data packet is preempted, generating, by a first device, first indication information, where the first indication information is used to indicate information about the preempted resource position of the first data packet; and sending, by the first device, the first indication information to a second device, so that the second device receives the first data packet based on the first indication information.

Abstract: The present disclosure relates to coordinated multipoint wireless communications methods. One example method includes predicting a first delay difference between receiving, by a terminal device, downlink data from a beam A of a first node and receiving, by the terminal device, the downlink data from a beam B of a second node, where the terminal device is located in a coverage area in which the beam A intersects with the beam B, and determining a first adjustment time period based on the first delay difference, where the first adjustment time period is used to adjust a transmission time in which the first node transmits the downlink data to the terminal device by using the beam A.

Abstract: A data transmission method is provided to expand coverage of a broadcast channel, including: determining, by a base station, a plurality of data blocks carried on N broadcast channels, where an ith broadcast channel in the N broadcast channels corresponds to an ith antenna port (group) in N antenna ports (group); scrambling, by the base station, the data blocks carried on the N broadcast channels, to obtain scrambled code blocks carried on the N broadcast channels; and sending, by the base station on different time resource units by respectively using the N antenna ports, corresponding scrambled code blocks carried on the broadcast channels, or sending, by the base station on different time resource units by respectively using the N antenna port groups, corresponding scrambled code blocks carried on the broadcast channels.

Abstract: Example methods and apparatus for switching an analog beam are described. One example method includes transmitting a data channel by a terminal by using a first analog beam. The terminal determines that a second analog beam is a target beam to be switched to. The terminal transmits a related signal of the data channel by using the second analog beam. The terminal transmits a data channel by using the first analog beam. The terminal switches from the first analog beam to the second analog beam to transmit the data channel in response to determining that a specified condition is met.

Abstract: Embodiments are disclosed of a hybrid automatic repeat request feedback method and apparatus, and relates to the field of communications technologies. The hybrid automatic repeat request feedback method is applied to a receive end. After receiving data information sent by a transmit end, the receive end may determine, when target data in the data information is not checked, a measurement value of the target data, then generate feedback information based on the measurement value, and subsequently, send the feedback information to the transmit end, so that the transmit end can determine, based on the feedback information, whether the target data needs to be retransmitted.

Abstract: An outer loop power control method including determining, according to a target value of each control channel performance indicator of user equipment (UE) in each cell, a target value of at least one performance mapping indicator of the UE in each cell, acquiring a measured value of the at least one performance mapping indicator of the UE, determining a signal-to-noise ratio target value of the UE in each cell according to the target value of the at least one performance mapping indicator of the UE in each cell and the corresponding measured value of the performance mapping indicator, and performing outer loop power control on the UE in each cell according to the signal-to-noise ratio target value of the UE in each cell. The signal-to-noise ratio target value is controlled according to control channel quality.

Abstract: Embodiments provide a terminal control method, a radio network controller, and a base station. The method includes: determining, by an RNC, that a downlink serving base station of a terminal that establishes a connection with both a macro base station and a micro base station is the macro base station; acquiring, by the RNC, a target power control value, where the target power control value can be used to ensure that channel quality of an uplink control channel from the terminal to the macro base station reaches a target threshold; and sending, by the RNC, the target power control value to the micro base station.

Abstract: A data transmission method is provided to expand coverage of a broadcast channel, including: determining, by a base station, a plurality of data blocks carried on N broadcast channels, where an ith broadcast channel in the N broadcast channels corresponds to an ith antenna port (group) in N antenna ports (group); scrambling, by the base station, the data blocks carried on the N broadcast channels, to obtain scrambled code blocks carried on the N broadcast channels; and sending, by the base station on different time resource units by respectively using the N antenna ports, corresponding scrambled code blocks carried on the broadcast channels, or sending, by the base station on different time resource units by respectively using the N antenna port groups, corresponding scrambled code blocks carried on the broadcast channels.

Abstract: Embodiments provide a terminal control method, a radio network controller, and a base station. The method includes: determining, by an RNC, that a downlink serving base station of a terminal that establishes a connection with both a macro base station and a micro base station is the macro base station; acquiring, by the RNC, a target power control value, where the target power control value can be used to ensure that channel quality of an uplink control channel from the terminal to the macro base station reaches a target threshold; and sending, by the RNC, the target power control value to the micro base station.

Abstract: An outer loop power control method including determining, according to a target value of each control channel performance indicator of user equipment (UE) in each cell, a target value of at least one performance mapping indicator of the UE in each cell, acquiring a measured value of the at least one performance mapping indicator of the UE, determining a signal-to-noise ratio target value of the UE in each cell according to the target value of the at least one performance mapping indicator of the UE in each cell and the corresponding measured value of the performance mapping indicator, and performing outer loop power control on the UE in each cell according to the signal-to-noise ratio target value of the UE in each cell. The signal-to-noise ratio target value is controlled according to control channel quality.