Provided, according to various embodiments, are a method for performing, by a terminal, communication according to cyclic delay diversity (CDD) using multiple antennas in a wireless communication system and an apparatus therefor. Disclosed are a method for performing communication according to cyclic delay diversity (CDD) and an apparatus therefor, the method comprising the steps of: determining a delay range of a delay value for CDD on the basis of a moving speed of a terminal; determining the delay value of the CDD within a set delay range; and transmitting a cyclically delayed signal to a target terminal, according to the determined delay value, wherein the preset delay range is determined on the basis of the moving speed of the terminal.

Embodiments of this application provide a wireless communications method and device, to enable frequency hopping to adapt to flexible transmission of a 5G system. The method includes: determining, by a network device a basic parameter set used by the terminal to transmit the first signal; and sending, by the network device, first information according to the basic parameter set to instruct the terminal to switch or not to switch the uplink transmit antenna.

Methods and systems that can enable antenna selection (AS) and data bits in transmitted spatially modulated (SM) streams to be detected at a receiver using different detection methods. In example embodiments, encoding for an AS stream is done separately at a transmitter than encoding for data streams, enabling a receiver to use one type of detection for AS bits and a reduced complexity type of MIMO detection for the data bits.

This application provides a communication method and a communications apparatus. The communication method includes: if a first SRS resource collides with a second SRS resource in a same slot or a same symbol, sending and receiving an SRS on one of the first SRS resource or the second SRS resource in the same slot or the same symbol; and/or if at least one GP symbol between resources included in a first resource set is the same as a symbol in a second resource, sending and receiving an SRS or a PUCCH on the second resource. The communication method is applicable to sending and receiving a signal used for uplink channel quality measurement when a resource collision occurs.

Aspects directed towards sounding reference signal (SRS) antenna switching are disclosed. In one example, an SRS configuration is received from a network in which at least four antennas of a scheduled entity are configured based on the SRS configuration. Here, the SRS configuration configures at least one antenna to simultaneously support SRS antenna switching and an uplink (UL) multiple-input multiple-output (MIMO) communication. An SRS communication is then transmitted according to the SRS configuration. In another example, a transmission capability reporting is received from a scheduled entity comprising at least four antennas. A determination is then made of whether the scheduled entity may simultaneously support SRS antenna switching and an UL MIMO communication. An SRS configuration is then generated for the scheduled entity based on the determination in which a default SRS configuration configures at least one antenna to simultaneously support the SRS antenna switching and the UL MIMO communication.

Disclosed are techniques and apparatuses for transmitting positioning beacon beams including transmitting a plurality of positioning beacon beams from a first node in a first time period using a first order of transmission. Then, the first node transmits the plurality of positioning beacon beams from a second time period using a second order of transmission, where the first order of transmission is different in the second order of transmission.

An automotive radar system that is switchable between one or more high power modes and one or more increased channel modes. The radar system includes multiple transmit antennas, an integrated circuit including a transmit chain generating a positive transmit signal and a negative transmit signal that together form a differential transmit signal, and a coupling interface. The coupling interface configurably couples the differential transmit signal to two transmit antennas of the multiple transmit antennas to selectively drive the two transmit antennas in either a differential mode or in a power-combining mode that combines power from the positive transmit signal and negative transmit signal to drive a first transmit antenna of the multiple transmit antennas while isolating a second transmit antenna of the two transmit antennas.

Disclosed herein is a method and apparatus for selecting an antenna for beam measurement in which a terminal and a base station can communicate with each other in a 5th generation (5G) communication environment by executing an embedded artificial intelligence (AI) algorithm and/or a machine learning algorithm to perform signal processing. The method for selecting an antenna according to an embodiment of the present disclosure can include transmitting, to a base station, a report indicating that an antenna selection function for beam measurement is provided, receiving resource allocation information for beam measurement corresponding to the report from the base station, and performing, in response to a change in a beam direction caused by rotation of a terminal, beam tracking, based on commencement of a beam measurement period included in the resource allocation information for beam measurement.

The present disclosure provides a method and device in a node for wireless communication. A first node receives a first signaling; transmits a first signal, a first reference signal and a first demodulation reference signal in the first time-frequency resource block set; and transmits a second signal, a second reference signal and a second demodulation reference signal in the second time-frequency resource block set. A third antenna port is an antenna port transmitting the first reference signal, a fourth antenna port is an antenna port transmitting the second reference signal, and both a port number of the third antenna port and a port number of the fourth antenna port are a target antenna port number; a first antenna port is an antenna port transmitting the first demodulation reference signal, and the third antenna port is associated with the first antenna port.

In one embodiment, a device in a network receives, at its wireless receiver, a preamble of a spatially modulated packet. The device analyzes the preamble of the packet to identify a transmit antenna index of the packet. The device determines that the packet was not destined for the device, based on the transmit antenna index of the packet. The device depowers, prior to decoding the complete packet, the wireless receiver of the device, based on the determination that the packet was not destined for the device.