Abstract:
A power control method and a terminal device are disclosed. The method includes: sending, by a first terminal device, first data and first sidelink control information corresponding to the first data to at least one second terminal device; receiving, by the first terminal device, at least one piece of power adjustment information from the at least one second terminal device, where the at least one piece of power adjustment information is determined by the at least one second terminal device based on at least one of the first data and the first sidelink control information; determining, by the first terminal device, a transmit power for second data based on the at least one piece of power adjustment information; and sending, by the first terminal device, the second data to the at least one second terminal device at the transmit power.
Abstract:
A power control method and a terminal device are disclosed. The method includes: sending, by a first terminal device, first data and first sidelink control information corresponding to the first data to at least one second terminal device; receiving, by the first terminal device, at least one piece of power adjustment information from the at least one second terminal device, where the at least one piece of power adjustment information is determined by the at least one second terminal device based on at least one of the first data and the first sidelink control information; determining, by the first terminal device, a transmit power for second data based on the at least one piece of power adjustment information; and sending, by the first terminal device, the second data to the at least one second terminal device at the transmit power.
Abstract:
Embodiments of the present disclosure disclose a coherent receiver, including: a frequency offset estimation unit and a frequency offset compensation unit, where the frequency offset estimation unit is configured to receive signal light and local oscillator light, where the signal light is received by a first photoelectric detector, and a first intensity value is obtained, the signal light is received by a second photoelectric detector, and a second intensity value is obtained, the local oscillator light is received by a third photoelectric detector, and a third intensity value is obtained, and the local oscillator light is received by a fourth photoelectric detector, and a fourth intensity value is obtained; and the frequency offset compensation unit is configured to obtain a frequency offset value between the signal light and the local oscillator light according to a difference between a first ratio and a second ratio.
Abstract:
Embodiments of the present disclosure disclose a coherent receiver, including: a frequency offset estimation unit and a frequency offset compensation unit, where the frequency offset estimation unit is configured to receive signal light and local oscillator light, where the signal light is received by a first photoelectric detector, and a first intensity value is obtained, the signal light is received by a second photoelectric detector, and a second intensity value is obtained, the local oscillator light is received by a third photoelectric detector, and a third intensity value is obtained, and the local oscillator light is received by a fourth photoelectric detector, and a fourth intensity value is obtained; and the frequency offset compensation unit is configured to obtain a frequency offset value between the signal light and the local oscillator light according to a difference between a first ratio and a second ratio.
Abstract:
Embodiments of the present invention provide a method and an apparatus for transmitting an acknowledgement frame in a wireless local area network. The method includes: generating an acknowledgement frame for a send frame, where the acknowledgement frame includes a short acknowledgement frame, and the short acknowledgement frame includes an STF, an LTF, and a SIG; and sending the acknowledgement frame. In the embodiments of the present invention, the short acknowledgement frame may not include a data unit, so that a size of the acknowledgement frame is reduced and an overhead of the acknowledgement frame is cut down, thereby improving interaction efficiency of the acknowledgement frame.
Abstract:
A communication method and a related apparatus, applied to intelligent driving or assisted driving are described. The method includes a first node sending a message on at least one of M first time domain resources. The first node receives a message on at least one of N second time domain resources. The first time domain resource is used by the first node to send a message. The second time domain resource is used by the first node to receive a message. The M first time domain resources and the N second time domain resources belong to a first transmission opportunity. A time domain resource in the first transmission opportunity is for message transmission on a first frequency hopping channel. M is an integer greater than 0, N is an integer greater than 0, and M+N>2.
Abstract:
A resource determining method and apparatus, an electronic device, a storage medium, a program product, and a vehicle are provided, which are relate to interference listening and avoidance technologies of collaborative radars, and include: determining a first listening result of a first time-frequency resource set; when the first listening result meets a first congestion condition, reducing a time-frequency occupation ratio and/or transmit power of a first target detection signal to obtain a second target detection signal, wherein the first congestion condition includes: a congestion degree of any time-frequency resource in a second time-frequency resource set is greater than a first threshold, and the second time-frequency resource set is included in the first time-frequency resource set; and detecting a target based on the second target detection signal.
Abstract:
A short-distance communication method includes: obtaining at least one piece of code data; sending a scheduling type indication and a data type indication to a second device, where the scheduling type indication indicates that the at least one piece of code data includes initially transmitted data, retransmitted data, or initially transmitted data and retransmitted data, and the data type indication indicates location information and/or an amount of a part or all of the at least one piece of code data; and sending the at least one piece of code data to the second device.
Abstract:
A method includes: mapping, by a first terminal device, first information to a first time unit and a second time unit; and sending, by the first terminal device, the first information in the first time unit and the second time unit, where the first time unit includes a first symbol including a first cyclic prefix, the second time unit includes at least one second symbol including a second cyclic prefix, a length of the first cyclic prefix is greater than a length of the second cyclic prefix, and a length of the first time unit is equal to N times a length of the second symbol including the second cyclic prefix in the second time unit.
Abstract:
A synchronization method includes: determining a data signal, where a target sequence in the data signal is mapped to at least one symbol that includes the first symbol within a time unit, data in the data signal is mapped to at least one another symbol in the time unit other than the at least one symbol, the first symbol includes a cyclic prefix, and the target sequence is used by a second device to synchronize the data signal; and sending the data signal to the second device in the time unit. In the present disclosure, a sequence used to synchronize a data signal for each transmission is mapped at an equal spacing to at least one symbol that includes the first symbol within a time unit for the current transmission.