Aspects of disclosure relate to a UE reporting to a gNB time delays and phases of pilot signals received via multiple transmission paths in order for the gNB to pre-equalize a future transmission to the UE. The UE determines a first time delay for receiving a first pilot signal from a gNB via a first path, determines a second time delay for receiving a second pilot signal from the gNB via a second path, and generates a report based on the first time delay and the second time delay. The UE then sends the report to the gNB and receives a multi-TRP signal from the gNB via the first path and the second path, wherein the multi-TRP signal is pre-equalized for transmission based on the report to at least have a same time delay as a shorter one of the first time delay or the second time delay.

The present application relates to a method for communication detection. The method comprises: determining a length level of a communication link according to a time length of pulse data during transmission of data over the communication link, and determining a detection time point according to the length level of the communication link. The length level of the communication link is determined according to the time length of pulse data during transmission of data over the communication link, and then the detection time point of the data is confirmed, thereby realizing dynamic determination of the detection time point of data according to the time length of the pulse data, and data waveform attenuation caused by an excessively long distance is avoided by means of automatic adjustment of the detection time point, so that the correctness of data detection is ensured, and the stability of long-distance homebus communication is improved.

A packet detection method is disclosed. The packet detection method includes the following operations: receiving a wireless communication signal; calculating a delay correlation function of the wireless communication signal; calculating a delay related output value and a threshold value according to the delay correlation function; and determining whether the wireless communication signal satisfies a feature of a wireless network packet or not according to the delay related output value and the threshold value.

A method for minimizing a time domain mean square error (MSE) of channel estimation (CE) includes estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels; estimating, by the processor, a noise variance of the RS channels; and determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting a beam to be allocated for transmitting downlink (DL) data to user equipment (UE). In some implementations, a UE receives a reference signal on each of a number of beams associated with a base station, and determines a delay spread value for each beam. The UE identifies each beam for which the determined channel delay spread value is less than a threshold value, and determines a reference signal received power (RSRP) level for each identified beam. The UE transmits an indication of the determined RSRP levels of the identified beams to the base station, and receives, in response to the transmitted indication, a selection of the beam to be allocated for DL transmissions to the UE.

A method used for controlling a wireless communication system includes receiving a packet, demodulating the packet to obtain a first channel characteristic index and a second channel characteristic index of the wireless communication system, selecting a length of a guard interval according to the first channel characteristic index, and selecting a length of a long training field according to the second channel characteristic index. When signal quality corresponding to the packet is higher, the length of the guard interval is shorter, and the length of the long training field is shorter.

Methods of operating a radio access network (RAN) node in a communication network. Methods include operations of receiving valid channel data from multiple user equipment (UE) devices. The channel data includes channel impulse response distribution data corresponding to the UE devices. Operations include generating a virtual UE based on a first delay spread of a first UE device of the UE devices in a multiple user multiple input multiple output (MU-MIMO) scheduling configuration.

Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may transmit, to a network entity, a capability message indicating a capability of the UE to report a cyclic shift for a reference signal. The UE may receive an indication of a reporting configuration from the network entity indicating uplink resources for reporting the cyclic shift by the UE, and the UE may receive one or more reference signals from the network entity. In some examples, the UE may transmit, to the network entity and using the uplink resources, an uplink message indicating the cyclic shift. The UE may estimate the cyclic shift based on measuring a channel delay spread of the one or more reference signals, a phase noise mask of the one or more reference signals, or both.

An electronic device and a method for estimating a channel based on a fading channel in an electronic device are provided. The electronic device includes at least one antenna, a communication circuit, and at least one processor operably coupled with the at least one antenna and the communication circuit, wherein the at least one processor is configured to obtain a channel characteristic of a reception signal received through the at least one antenna, set a weight and a channel estimation interval for channel estimation based on the channel characteristic of the reception signal, estimates a channel of the reception signal by applying the set weight to at least one subcarrier included in the set channel estimation interval among a plurality of subcarriers included in a reference signal included in the reception signal.

Certain aspects of the present disclosure provide techniques for reporting explicit channel state information (CSI) with spatial and time domain compression.