Abstract: The present disclosure includes example downlink signal sending methods, downlink signal receiving methods, and devices. In one example method a transmit end device indicates position information of at least one of a first signal or a second signal in time domain based on a position relationship between the first signal and the second signal in at least one of frequency domain or time domain. The transmit end device can then send a frame including the first signal and the second signal. In embodiments of the present invention, position information of a synchronization signal in time domain can be indicated, and sending of a single-symbol synchronization signal is also supported.

Abstract: A method is based on data transmission in a multi-parameter system, where a plurality of parameters include a subcarrier spacing. The method includes: sending, by the multi-parameter system, data over a physical channel or a physical signal by using at least one subcarrier spacing.

Abstract: A wireless communication method and apparatus are disclosed. In an embodiment a wireless communication method includes determining, by a terminal device, based on N first ports, within a first time unit for a first channel or a first signal, M second ports within the first time unit for a second channel or a second signal, wherein T?N?1, T?M?1, and wherein T is a maximum number of ports usable at the same time unit by the terminal device during sending, sending, by the terminal device, within the first time unit, the first channel or the first signal by using the N first ports and sending, by the terminal device, within the first time unit, the second channel or the second signal by using the M second ports.

Abstract: Embodiments of the present application provide a transmission method, user equipment, and a base station, and relate to the field of communications technologies, so that the user equipment can transmit information on an uplink channel with any quantity of symbols. The method is applied to user equipment UE, and includes: mapping, by the UE, W complex-value symbols of an uplink channel onto a resource area 1 of the UE, where the resource area 1 of the UE includes F discrete or contiguous subcarriers in Y symbols; mapping a reference signal corresponding to the uplink channel onto a resource area 2 of the UE, where the resource area 2 includes D discrete or contiguous subcarriers in C symbols; and sending, by the UE, signals of the resource area 1 and the resource area 2.

Abstract: Embodiments of the present disclosure includes example subframe configuration methods and related devices. One example method includes configuring, by a network-side device, a target subframe, where the target subframe includes at least one sounding reference signal (SRS) symbol used to send an SRS signal. The network-side device can then send first configuration signaling to a terminal device, where the first configuration signaling includes a resource configuration of the target subframe or an SRS configuration of the target subframe.

Abstract: A method for operating a relay node during a handoff from a first controller to a second controller includes receiving a first instruction from the first controller to discontinue using a first set of wireless backhaul link resources allocated to the relay node by the first controller and to temporarily use a second set of wireless backhaul link resources dedicated by the second controller. The method also includes receiving a second instruction from the second controller to discontinue using the second set of wireless backhaul link resources and to begin using a third set of wireless backhaul link resources allocated to the relay node by the second controller.

Abstract: Embodiments of this application provide a parameter determining method, a base station, and user equipment. The parameter determining method provided in this application includes: determining, by a base station, a first subcarrier spacing corresponding to UE; and notifying, by the base station, the UE of the first subcarrier spacing. In the embodiments of this application, the UE may accurately learn of, in a multi-subcarrier-spacing system, a subcarrier spacing used for data transmission, and then perform data transmission. This can effectively ensure that the UE performs a corresponding service, thereby meeting a corresponding service requirement.

Abstract: A method for communication between a base station and multiple terminal devices in a time division duplex (TDD) mode is disclosed. Prior to communicating with the multiple terminal devices by means of a plurality of frames, the base station performs semi-static configuration on a first group of subframes of the plurality of frames, by sending a system message to the multiple terminal devices, the system message carrying configuration information designating a first group of subframes in every frame of the plurality of frames as being of a first subframe type; for each frame in the plurality of frames, the base station sends downlink control information to a first terminal device of the multiple terminal devices, the downlink control information designating a second group of subframes in said each frame as being of a second subframe type.

Abstract: Embodiments of this application provide a data transmission method and a device. The method includes: obtaining, by a terminal, first indication information or second indication information, where the first indication information is used to indicate that a reference signal is carried in a resource unit, and the second indication information is used to indicate that no reference signal is carried in a resource unit; and performing, by the terminal, data transmission according to the first indication information or the second indication information. The reference signal can be properly configured in the embodiments.

Abstract: The application relates to a method for antenna port indication. A terminal receives information indicating an antenna port set of a pilot from a base station. The antenna port set is used for a resource block (RB) set and the pilot is used for data demodulation. And the terminal determines the antenna port set based on the received information. By implementing the solution in the application, transmission resource utilization is improved.

Abstract: The invention discloses a hovercraft using single ducted fan with vectoring propulsion, including a hull and a single ducted fan arranged on the hull, wherein the single ducted fan comprises barrel shaped shell and oar-blade component arranged in chamber of the shell, a first air outlet is disposed on one side of shell towards the tail end of the hull, diversion rudders enabling to block the first air outlet are disposed on the shell, two first air guide all connected with chamber of the shell is disposed on both sides of the shell, a second air outlet towards external of the single ducted fan is disposed on the first air guide, and the second air outlet and the first air outlet are arranged in reverse or with an included angle greater than 0 degree.

Abstract: A method for operating a relay node during a handoff from a first controller to a second controller includes receiving a first instruction from the first controller to discontinue using a first set of wireless backhaul link resources allocated to the relay node by the first controller and to temporarily use a second set of wireless backhaul link resources dedicated by the second controller. The method also includes receiving a second instruction from the second controller to discontinue using the second set of wireless backhaul link resources and to begin using a third set of wireless backhaul link resources allocated to the relay node by the second controller.

Abstract: The present invention provides a signal transmission method and apparatus, a communications system, a terminal, and a base station, where the method includes: determining a repetition factor or an extended sequence of a channel; determining a time domain resource according to the repetition factor or a length of the extended sequence, where the time domain resource is a transmission subframe; and sending a signal by using the transmission subframe of the channel. The signal transmission method, apparatus, communications system, terminal, and base station that are provided by the present invention can solve the technical problem of poor channel coverage in a signal transmission method in the prior art.

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: A wireless communications method is applied to a communications system using a frequency domain resource with a specified bandwidth, where the frequency domain resource is divided into at least two frequency domain resource groups, each frequency domain resource group includes at least one resource block, the at least two frequency domain resource groups belong to a same cell, and the method includes: determining, from the at least two frequency domain resource groups, a target frequency domain resource group to be allocated to a target terminal device, where the target frequency domain resource group includes at least one frequency domain resource group; sending first indication information to the target terminal device, where the first indication information is used to indicate the target frequency domain resource group; and performing wireless communication with the target terminal device by using the target frequency domain resource group. Therefore, different user requirements can be flexibly met.

Abstract: Embodiments of the present invention provide a method for transmitting uplink data, user equipment, and a base station. The method includes: when user equipment UE correctly receives, in a subframe n, downlink control signaling used for instructing the UE to transmit a physical uplink shared channel PUSCH, determining, by the UE according to the downlink control signaling and a subframe bundling configuration, a bundled subframe for transmitting the PUSCH, where the subframe bundling configuration includes a quantity of bundled subframes; and transmitting the PUSCH in the bundled subframe. In the embodiments of the present invention, a bundled subframe is introduced, which increases scheduling resources for a PUSCH, and enhances coverage performance of a signal.

Abstract: The present invention provides a scheduling information transmission method and apparatus. The method includes: allocating, by a network device, a level-one dedicated channel and a level-two dedicated channel to a target terminal device; sending, by the network device, indication information of the level-one dedicated channel by using a preset first time-frequency resource; sending, by the network device, indication information of the level-two dedicated channel to the target terminal device by using the level-one dedicated channel; and sending, by the network device, dedicated scheduling information for the target terminal device to the target terminal device by using the level-two dedicated channel. Therefore, scheduling information transmission flexibility can be improved, and system performance and user experience can be improved.

Abstract: The present invention provides a signal transmission method and apparatus, a communications system, a terminal, and a base station, where the method includes: determining a repetition factor or an extended sequence of a channel; determining a time domain resource according to the repetition factor or a length of the extended sequence, where the time domain resource is a transmission subframe; and sending a signal by using the transmission subframe of the channel. The signal transmission method, apparatus, communications system, terminal, and base station that are provided by the present invention can solve the technical problem of poor channel coverage in a signal transmission method in the prior art.

Abstract: Embodiments herein disclose methods and devices for generating and transmitting to a target node (or receiving from a source node) a first message including a time-domain resource configuration and a frequency-domain resource configuration having respective bitmaps for indicating whether a particular message (e.g., system, paging or RACH) response) is transmitted in downlink subframes and/or indicating whether the particular message is transmitted on physical resources.

Abstract: A system and method for adapting code rate are provided. A method for a first communication device to transmit a resource assignment to at least one communication device includes assigning at least one transmission resource to transmit the resource assignment, adapting a code rate of an encoded payload based on the at least one transmission resource and a threshold, thereby producing an adapted payload, and transmitting the adapted payload.