Abstract:
The present invention discloses a method and a device for transmitting sounding reference signal in a multi-antenna system, wherein the method includes acquiring antenna grouping information, and grouping antennas according to the antenna grouping information; and transmitting SRS on the respective antennas, wherein different antenna groups transmit the SRS in different frequency bands at a same moment. With the present invention, the interference with a base station of an adjacent cell in a certain frequency band is enabled to be reduced.
Abstract:
The present invention relates to the field of communications technologies, and discloses a method and a device for implementing synchronization and sense between user equipments. The method includes: triggering, by a base station, a first user equipment to perform synchronization with another user equipment; receiving quality information, reported by the first user equipment, of a channel between the first user equipment and a synchronized user equipment; and determining, according to the quality information of the channel, a target user equipment that directly communicates with the first user equipment, and/or determining, according to the quality information of the channel, a radio resource which can be used by the first user equipment. By using the present invention, energy efficiency of user equipments can be improved and resource overhead of a system can be reduced, thereby ensuring direct communication between user equipments.
Abstract:
Embodiments of the present invention provide a method and a device for allocating a backhaul link resource. The method includes: selecting, by a first base station, at least one subframe in an uplink (UL) frequency band in a frequency division duplex (FDD) wireless communication system; and allocating the selected at least one subframe as a backhaul link resource between the first base station and a second base station. With the method, the device and the system for allocating a backhaul link resource according to the embodiments of the present invention, a subframe is selected in an unexhausted frequency band in existing bandwidth resources and allocated to a wireless backhaul link. Therefore, the existing bandwidth resources are released, resources are allocated to wireless backhaul links, and costs of the communication system are saved.
Abstract:
This application relates to the field of wireless communications and self-driving/intelligent driving/autonomous driving vehicles, and in particular, to the field of collaborative radars. A first apparatus receives first information from a second apparatus. The first apparatus determines, based on the first information, the priorities of a plurality of time-frequency resources included in a first time-domain range. The first apparatus further selects a first time-frequency resource among the plurality of time-frequency resources. The priority of the first time-frequency resource is the highest among the priorities of the plurality of time-frequency resources. A time-frequency resource with a comparatively high priority is selected to send a radar signal, to reduce a probability of a resource collision, and reduce and/or avoid interference between radars, especially collaborative radars.
Abstract:
An information processing method includes obtaining, by a first apparatus, first information that includes environment information of a terminal in which the first apparatus is located; receiving second information from a second apparatus, where the second information indicates region information and/or time information of the terminal; and then outputting first sensed information for the terminal based on the first information and the second information.
Abstract:
A detection apparatus includes a laser transmitter, a laser detector, a beam optical splitter, and an image detector. The laser transmitter is configured to emit a laser signal to a detection area through the beam optical splitter. The laser detector is configured to receive a first signal from a first target object in the detection area through the beam optical splitter. The beam optical splitter is further configured to provide a second signal from the first target object in the detection area for the image detector. The image detector is configured to perform imaging using the second signal.
Abstract:
A communications method includes a first communications device that communicates a first signal on a first time domain resource in a first time unit, communicates a second signal on a third time domain resource in a second time unit, communicates a fourth signal on a second time domain resource in the first time unit, and communicates a third signal on a fourth time domain resource in the second time unit. The first time unit successively includes, in time domain, the first time domain resource, a first guard period, the second time domain resource, and a second guard period that are consecutive in time domain, and the second time unit successively includes, in time domain, the third time domain resource, a third guard period, the fourth time domain resource, and a fourth guard period that are consecutive in time domain.
Abstract:
A frequency band state determining method and a related device are provided. The method includes: A detection apparatus determines an intermediate frequency signal based on a detected interfering signal in an environment and an oscillation signal that belongs to a first frequency band. The detection apparatus performs first processing on the intermediate frequency signal, to obtain a first detection result, and when the first detection result indicates that the first frequency band is busy, the detection apparatus performs second processing on the intermediate frequency signal, to obtain a second detection result. The detection apparatus determines a state of the first frequency band based on the second detection result. The detection apparatus may be a radar, and the radar may work in a use scenario of a cooperative radar.
Abstract:
An information reporting method and apparatus for of automatic or intelligent driving, the method including receiving, by a detection apparatus, a first signal, determining, by the detection apparatus, based on the first signal, an interfered range in a detection range of the detection apparatus, and sending, by the detection apparatus, interference information to a fusion apparatus, where the interference information comprises indication information of the interfered range.
Abstract:
A terminal device receives first scheduling information from an access network device, where the first scheduling information is used to schedule the terminal device to transmit a first transport block by using an unlicensed carrier; performs rate matching on the first transport block, to obtain uplink data; detects the unlicensed carrier, and determines a start time domain symbol, used to send the uplink data, in at least two time domain symbols included in a first subframe, where the at least two time domain symbols include a first time domain symbol and a second time domain symbol, the second time domain symbol is later than the first time domain symbol, and the start time domain symbol is the first time domain symbol or the second time domain symbol; and sends the uplink data to the access network device from the start time domain symbol.