Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a random access preamble to a base station as part of a two-step random access procedure. The UE may generate the preamble by identifying a discrete Fourier transform (DFT) matrix and generating a set of sequences based on the DFT matrix. Each sequence of the set of sequences may be generated by selecting a column of the DFT matrix and performing deterministic sampling of respective entries from the selected column in accordance with a sampling function. The UE may then select a sequence from the set of sequences based on generating the set of sequence. The UE may transmit the selected sequence to a wireless device (e.g., a base station).

A terminal is disclosed that includes a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D multiplexed with a physical data channel for D2D in a frequency domain and a second transmitter configured to transmit data corresponding to the control information for D2D by using the physical data channel for D2D, where a plurality of the control information for D2Ds are mapped in a wireless resource unit. In other aspects, another terminal is also disclosed.

Inventive concepts and embodiments associated therewith are provided wherein a first device transmits first information to a destination device using a first band of frequencies comprising microwave frequencies and cellular frequencies while a second device, that comprises a connection to the first device, transmits second information to the destination device using a second band of frequencies that differs from the first band of frequencies, is devoid of cellular frequencies and comprises microwave frequencies. In some embodiments, the connection of the second device to the first device comprises a wireless connection. In further embodiments, at least one of said first and second devices comprises a smartphone.

A method for performing wireless communication by a first device includes: receiving information related to a time division duplex (TDD) slot configuration, transmitting, to a second device, a sidelink-synchronization signal block (S-SSB), the S-SSB including a sidelink primary synchronization signal, a sidelink secondary synchronization signal, and a physical sidelink broadcast channel, and transmitting, to the second device, a physical sidelink shared channel based on the information related to the TDD slot configuration. Candidate resources to which a bitmap related to a sidelink resource pool is applied (i) are configured based on the information related to the TDD slot configuration and (ii) include one or more slots. Configuration information related to a sidelink symbol included in each of the one or more slots is received, the configuration information including information related to a position of the sidelink symbol configured to be the same for the candidate resources.

Provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. The method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.

Inventive concepts relating to open access points are described wherein a first wireless service is provided to one or more devices associated with a first residence using a first band of frequencies and a second wireless service is provided to one or more other devices not associated with the first residence using a second band of frequencies. According to some embodiments, an access point is configured to provide the first wireless service to the one or more devices associated with the first residence responsive to an access code that has been provided to the one or more devices and is further configured to provide the second wireless service to the one or more other devices not associated with the first residence. The first wireless service differs from the second wireless service, and the second band of frequencies differs from the first band of frequencies and comprises 900 MHz.

A method for performing wireless communication by a first device includes: receiving information related to a time division duplex (TDD) slot configuration, transmitting, to a second device, a sidelink-synchronization signal block (S-SSB), the S-SSB including a sidelink primary synchronization signal, a sidelink secondary synchronization signal, and a physical sidelink broadcast channel, and transmitting, to the second device, a physical sidelink shared channel based on the information related to the TDD slot configuration. Candidate resources to which a bitmap related to a sidelink resource pool is applied (i) are configured based on the information related to the TDD slot configuration and (ii) include one or more slots. Configuration information related to a sidelink symbol included in each of the one or more slots is received, the configuration information including information related to a position of the sidelink symbol configured to be the same for the candidate resources.

A transmitter is configured to convey N bits of information and L bits of information, for a total of N+L bits of information, to a destination device via an auxiliary device. The transmitter is configured to select, from a plurality of auxiliary devices that are respectively associated with different possible states of the L bits of information, an auxiliary device that is associated with a state of the L bits of information to be conveyed. L may be ≥1. The transmitter is also configured to convey the N+L bits of information from the transmitter to the destination device via the selected auxiliary device, without the transmitter transmitting any of the L bits of information to the destination device or the selected auxiliary device, by transmitting a signal to the selected auxiliary device. This signal comprises the N bits of information. N may be ≥0.

An uplink transmission method includes sending, by a terminal device to a network device, an uplink signal that includes a zero power reference signal. In a time-frequency resource for sending the uplink signal, a transmit power of the uplink signal within a range of a time-frequency resource of the zero power reference signal is zero.

Provided is a method and apparatus for transmitting interference signal information for inter-cell interference cancellation in a wireless communication system. The method for transmitting interference signal information may comprise the steps of: calculating the intensity of a signal on the basis of antenna gain and transmission power for a generated signal; generating probability information on the probability that interference is cancelled when the signal acts as interference; determining interference signal information indicating a feature of the signal when the signal acts as interference, on the basis of the antenna gain, the intensity of the signal, and the probability information; and transmitting the interference signal information to an adjacent cell.