A repetition unit (212) performs a repetition for mapping a data signal and a demodulation reference signal (DMRS) repeatedly at a symbol level over a plurality of subframes. A signal allocation unit (213) maps, in the a plurality of subframes, the repeated DMRS to symbols other than symbols corresponding to an SRS resource candidate, which is a candidate for a resource to which a sounding reference signal (SRS) to be used to measure an uplink received signal quality is to be mapped. A transmission unit (216) transmits an uplink signal (PUSCH) including the DMRS and the data signal over the a plurality of subframes.

Disclosed herein are systems, methods and/or computer programs for determining time and/or angle-based measurements for use in position determination. The apparatus may comprise means for receiving, at a plurality of antennae, a reference signal associated with positioning and determining cross-correlation values comprising a cross correlation between the reference signal received at each antenna and a known reference signal associated with positioning. There may also be provided means for estimating a channel response for a reference antenna of the plurality of antennae using the cross correlation values, the known reference signal and an antenna correlation comprising a known relationship between a channel response of each antenna of the plurality of antennae and the channel response of the reference antenna, and determining a time of arrival and/or an angle of arrival of the received reference signal based on the estimated channel response for the reference antenna.

A method for channel prediction for uplink (UL) and downlink (DL) massive Multiple Input Multiple Output (MIMO) systems for Open Radio Access Network (0-RAN) fronthaul Split 7.2 networks enables prediction of a channel that is seen by the UL slot. The pre-processing matrix is computed by the distributed unit (DU) based on this predicted channel and sent to the radio unit (RU) for minimizing the effects of channel aging. A channel corresponding to sounding reference signal (SRS) symbol closest to uplink slot being decoded can be predicted from previous SRS symbols and can be used as a combining matrix. Alternatively, the channel of the uplink slot itself can be predicted from past SRS symbols, and a combining matrix can be generated based on the predicted channel.

An uplink transmission method includes receiving a first message that is used to configure a first uplink resource. The method also includes performing uplink transmission on the first uplink resource. The first uplink resource includes at least a first part and a second part in a first time period, a phase deviation of uplink transmission between the first part and the second part falls within a first threshold range, or a power deviation of uplink transmission between the first part and the second part falls within a second threshold range. The first time period is a duration between a start time and an end time of the first uplink resource in a first time length, or a duration between a start time and an end time of the first uplink resource in a first transmit opportunity.

A radio receiver of a radio communication system is configured to tune to a radio channel by generating a periodic signal, mixing the periodic signal with radio signals received from a radio transmission system and passing the mixed signal through a channel filter. The radio receiver receives, from the radio transmission system, an OFDM data signal modulated on a set of OFDM subcarriers within the tuned channel. The channel filter has a passband that is wider than the channel bandwidth of the tuned channel such that the filter passes i) said OFDM data signal, ii) an in-channel reference signal, and iii) an out-of-channel reference signal. The radio receiver comprises channel estimation logic configured to use both reference signals to calculate a channel estimate for an OFDM subcarrier within the tuned channel.

A device and a method for cell coverage enhancement by an electronic device in a wireless communication system are provided. The electronic device includes a communication circuit and a processor, wherein the processor identifies a channel variation of an external device configured to perform communication via the communication circuit, configures a frequency hopping interval corresponding to the external device, based on the channel variation of the external device, transmits information related to the frequency hopping interval to the external device, and transmits, based on the frequency hopping interval, at least one reference signal assigned to at least one slot corresponding to at least one frequency band to the external device.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention relates to a method and an apparatus for estimating an uplink channel of a base station in a wireless communication system, comprising the steps of: estimating a position of a wireless channel tap on the basis of a sounding reference signal (SRS) received from a terminal; determining an average power value of the wireless channel tap for each link between a transmitting antenna and a receiving antenna from and to which the SRS is transmitted; and estimating an effective channel frequency response (effective CFR) of a physical uplink shared channel (PUSCH) on the basis of the position of the wireless channel tap and the average power value of the wireless channel tap.

Provided are methods for determining a transmission parameter of an uplink signal, a terminal and a network device. The method includes that: a terminal determines a first SRS resource set receives, from a network device, first indication information which is for instructing the terminal to transmit an aperiodic SRS, determines a target SRS resource set according to the first indication information and the first SRS resource set, sends the aperiodic SRS to the network device on an SRS resource in the target SRS resource set, receives, from the network device, second indication information which is for indicating a target SRS resource in the target SRS resource set; and the terminal determines a transmission parameter used to transmit an uplink signal according to the target SRS resource.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a control resource set (CORESET) that indicates a precoder granularity unit over which a same precoding is used for resources of the CORESET. The precoder granularity unit may be greater than a resource element group bundle of the CORESET and less than contiguous resource blocks of the CORESET. The UE may monitor for one or more physical downlink control channel candidates according to the configuration. Numerous other aspects are provided.

Methods, systems, and devices for wireless communications are described. A method for wireless communication may include receiving a single frequency networked composite reference signal (SFNed RS) at a first port of a user equipment (UE) and receiving a reference signal (RS) at a second port of the UE that is different than the first port of the UE. The method may also include performing channel estimation for at least one of the first port or the second port based at least in part on receiving the SFNed RS and the RS. A method for wireless communication may include transmitting a first portion of an SFNed RS from a first port of a first transmit/reception point to a UE and transmitting a downlink control information message to the UE that indicates at least one transmission configuration indicator state identifier that identifies the SFNed RS.