Abstract: Embodiments of this application provide a synchronization signal sending method and apparatus. The method includes: obtaining an initial synchronization sequence, where a spectrum width corresponding to the initial synchronization sequence is greater than a bandwidth of a synchronization channel and is less than a sum of the bandwidth of the synchronization channel and a system protection bandwidth; dividing the initial synchronization sequence into N sub-synchronization sequences; carrying the N sub-synchronization sequences on N time-domain symbols; and sending the N time-domain symbols to a receiving apparatus. According to the synchronization signal sending method provided in the embodiments of this application, a bandwidth loss of a synchronization signal is reduced, and utilization and synchronization performance of a system synchronization bandwidth are improved.

Abstract: In the method, the network device sends first signaling to a first terminal device, the first signaling is used to instruct the first terminal device to perform, on an unlicensed spectrum, a listen before talk LBT procedure used for occupying an unlicensed frequency band, and send uplink information within a first time length on the unlicensed frequency band; the network device receives, on the unlicensed spectrum, the uplink information from the first terminal device within the first time length, where the first time length is a part of maximum channel occupancy time obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the maximum channel occupancy time.

Abstract: The embodiments of this application provide a method and a device for sending and receiving control information, to flexibly adjust reliability of uplink transmission. A network device sends indication information of an uplink control channel to a terminal device. The indication information of the uplink control channel indicates at least one parameter of the following transmission parameters: a time domain length, a frequency domain length, a time domain repeat count, a frequency domain repeat count, or a transmit diversity manner. The network device receives uplink control information from the terminal device according to the indication information by using the uplink control channel.

Abstract: This application provides data transmission methods and devices. The method includes: determining, by a first device, a first resource and a second resource that are used to send a first transport block, where the first resource and the second resource are discontinuous in time domain; sending, by the first device, the first transport block to a second device on the first resource; and sending, by the first device, the first transport block to the second device on the second resource.

Abstract: Embodiments of the present invention disclose an information processing method and device, applicable to indicate a feedback mechanism for data transmission. The method in the embodiments of the present invention includes: sending, by a first device, first indication information to a second device, where the first indication information is used to indicate a first feedback mechanism of the second device for data transmission, the first feedback mechanism is at least one of a plurality of feedback mechanisms, and types of at least two of the plurality of feedback mechanisms are different; and receiving, by the first device, first feedback information sent by the second device based on first feedback mechanism.

Abstract: A method includes: obtaining, by a first network device, channel state information; generating, by the first network device, channel state indication information, where the channel state indication information includes an absolute value of the channel state information or an offset value of the channel state information relative to reference channel state information; and sending, by the first network device, the channel state indication information to a second network device.

Abstract: This application provides a data transmission method and apparatus. The method includes: sending, by a first device, a first signal to a second device, where the first signal includes a first data signal and a first pilot signal, and the first data signal is generated based on a first transmission parameter; receiving, by the first device from the second device, first information in response to the first signal; and sending, by the first device, a second signal to the second device after receiving the first information, where the second signal includes a second data signal and a second pilot signal, the second data signal is generated based on a second transmission parameter, and the first data signal and the second data signal carry a same transport block.

Abstract: A channel quality reporting apparatus includes: a processing module and a sending module. The processing module performs channel state measurement on a first frequency resource of a first carrier to obtain first CSI, and performs channel state measurement on a second frequency resource of the first carrier to obtain second CSI, where the first frequency resource and the second frequency resource do not overlap, resource blocks in the first frequency resource are consecutive, resource blocks in the second frequency resource are consecutive, and the second frequency resource includes an edge resource block of the first carrier. The sending module reports the first CSI to a second communications device, and report the second CSI to the second communications device.

Abstract: Embodiments of this application provide a synchronization signal sending method and apparatus. The method includes: obtaining an initial synchronization sequence, where a spectrum width corresponding to the initial synchronization sequence is greater than a bandwidth of a synchronization channel and is less than a sum of the bandwidth of the synchronization channel and a system protection bandwidth; dividing the initial synchronization sequence into N sub-synchronization sequences; carrying the N sub-synchronization sequences on N time-domain symbols; and sending the N time-domain symbols to a receiving apparatus. According to the synchronization signal sending method provided in the embodiments of this application, a bandwidth loss of a synchronization signal is reduced, and utilization and synchronization performance of a system synchronization bandwidth are improved.

Abstract: A method, system, and device for downlink transmission. A downlink signal is sent to a UE in an available frequency band of an uplink frequency band, and no signal is sent or received in a guard frequency band of the uplink frequency band, where the guard frequency band is located in a highest-frequency part and/or a lowest-frequency part of the uplink frequency band. Because no signal is sent or received in the guard frequency band of the uplink frequency band, interference to communication of a UE in an adjacent frequency band is reduced when the uplink frequency band is occupied for downlink transmission, thereby improving system performance.

Abstract: Embodiments of the present invention provide a power allocation method and a communications device. The power allocation method includes: determining, by a first communications device, a first power control parameter group, where the first power control parameter group includes information used to indicate a transmit power of the first communications device in a first-type subframe, and sending, by the first communications device, a signal only on a downlink frequency resource in the first-type subframe; and determining, by the first communications device, a second power control parameter group, where the second power control parameter group includes information used to indicate a transmit power of the first communications device in a second-type subframe, and sending, by the first communications device, signals on both a downlink frequency resource and an uplink frequency resource in the second-type subframe.

Abstract: Embodiments of the present invention disclose a transmission method, where includes: a receiver receives a communication signal, where the communication signal includes an uplink signal and a downlink signal that are transmitted on a same time-frequency resource, the uplink signal and the downlink signal use a same carrier mapping manner; and performs interference cancellation on the communication signal according to the first multiple access manner and the second multiple access manner. In the embodiments of the present invention, an uplink signal and a downlink signal that are transmitted on a same time-frequency resource use a same carrier mapping manner. In this way, after a new technology is introduced, a problem that carrier mapping manners of an uplink signal and a downlink signal that are on a same time-frequency resource are different can be overcome, which helps a receiver of a communication signal perform interference cancellation.

Abstract: Embodiments of the present invention disclose an interference suppression method and a related device and system. The method includes: sending, on a specified time-frequency resource, a first reference signal or a first reference signal group to an interfered-with end; receiving interfering source information sent by the interfered-with end, where the interfering source information includes an interference identifier used for indicating whether a potential interfering source causes interference to the interfered-with end; and if the interference identifier in the interfering source information indicates that the potential interfering source sending the reference signal on the specified time-frequency resource causes interference to the interfered-with end, determining that the potential interfering source is an interfering source, otherwise, determining that the potential interfering source is a non-interfering source.

Abstract: The present invention relates to the field of wireless communications technologies, and in particular, to user equipment, a network device, and an acknowledgement information transmission method. The user equipment sends at least one first ACK/NACK and at least one second ACK/NACK of at least two acknowledgement information ACKs/NACKs to be sent in one uplink subframe, according to a sequence of the first ACK/NACK being first, and the second ACK/NACK being second, or the second ACK/NACK being first, and the first ACK/NACK being second. The network device may determine, according to a same sorting sequence used by the user equipment for sending, that in the received at least two ACKs/NACKs, which is used to feed back a signal transmitted in an unconventional communication manner, and which is used to feed back a signal transmitted in a conventional communication manner.

Abstract: Embodiments of the present invention provide a power allocation method and a communications device. The power allocation method includes: determining, by a first communications device, a first power control parameter group, where the first power control parameter group includes information used to indicate a transmit power of the first communications device in a first-type subframe, and sending, by the first communications device, a signal only on a downlink frequency resource in the first-type subframe; and determining, by the first communications device, a second power control parameter group, where the second power control parameter group includes information used to indicate a transmit power of the first communications device in a second-type subframe, and sending, by the first communications device, signals on both a downlink frequency resource and an uplink frequency resource in the second-type subframe.

Abstract: A channel quality reporting apparatus includes: a processing module and a sending module. The processing module performs channel state measurement on a first frequency resource of a first carrier to obtain first CSI, and performs channel state measurement on a second frequency resource of the first carrier to obtain second CSI, where the first frequency resource and the second frequency resource do not overlap, resource blocks in the first frequency resource are consecutive, resource blocks in the second frequency resource are consecutive, and the second frequency resource includes an edge resource block of the first carrier. The sending module reports the first CSI to a second communications device, and report the second CSI to the second communications device.

Abstract: The present invention provides a method and a device for interference coordination. The method comprises: determining mutually interfering wave beams between a cell of a first base station and a cell of a second base station based on first interference information and second interference information; coordinating time-frequency resources, time domain resources or frequency domain resources occupied when the mutually interfering wave beams between the cell of the first base station and the cell of the second base station are sent, so as to reduce interference. By coordinating, wave beams of the cells of the base stations are sent in a staggered manner in terms of the time-frequency resources, the time domain resources or the frequency domain resources.

Abstract: A method, system, and device for downlink transmission. A downlink signal is sent to a UE in an available frequency band of an uplink frequency band, and no signal is sent or received in a guard frequency band of the uplink frequency band, where the guard frequency band is located in a highest-frequency part and/or a lowest-frequency part of the uplink frequency band. Because no signal is sent or received in the guard frequency band of the uplink frequency band, interference to communication of a UE in an adjacent frequency band is reduced when the uplink frequency band is occupied for downlink transmission, thereby improving system performance.

Abstract: Embodiments of the present invention disclose a transmission method, where includes: a receiver receives a communication signal, where the communication signal includes an uplink signal and a downlink signal that are transmitted on a same time-frequency resource, the uplink signal and the downlink signal use a same carrier mapping manner; and performs interference cancellation on the communication signal according to the first multiple access manner and the second multiple access manner. In the embodiments of the present invention, an uplink signal and a downlink signal that are transmitted on a same time-frequency resource use a same carrier mapping manner. In this way, after a new technology is introduced, a problem that carrier mapping manners of an uplink signal and a downlink signal that are on a same time-frequency resource are different can be overcome, which helps a receiver of a communication signal perform interference cancellation.

Abstract: Embodiments of the present invention disclose an interference suppression method and a related device and system. The method includes: sending, on a specified time-frequency resource, a first reference signal or a first reference signal group to an interfered-with end; receiving interfering source information sent by the interfered-with end, where the interfering source information includes an interference identifier used for indicating whether a potential interfering source causes interference to the interfered-with end; and if the interference identifier in the interfering source information indicates that the potential interfering source sending the reference signal on the specified time-frequency resource causes interference to the interfered-with end, determining that the potential interfering source is an interfering source, otherwise, determining that the potential interfering source is a non-interfering source.