This application provides a method for transmitting an SS/PBCH block and an apparatus. The method includes: A terminal device receives one SS/PBCH block in an SS/PBCH block burst set, and then obtains indication information based on the one SS/PBCH block. The indication information may be used to indicate candidate indexes of at least one SS/PBCH block in the SS/PBCH block burst set, and a quantity of the candidate indexes is greater than 64. For example, the quantity of candidate indexes may be 128, 160, 180, 196, 240, or the like. A network device may not be limited to 64 candidate indexes. In other words, a quantity of candidate positions used to send the SS/PBCH block is not limited to 64. Therefore, the network device may send a larger quantity of SS/PBCH blocks to the terminal device.

A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission data; and transmitting the frame, wherein the frame includes a first period in which a preamble which includes information on a frame configuration of the frame is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division, and among the plurality of OFDM symbols, OFDM symbols included in the second period include pilot symbols arranged along a time axis with a predetermined spacing therebetween, and a predetermined number of data symbols.

According to an embodiment of the disclosure, a method of operating a user equipment (UE) for estimating a channel based on a physical uplink shared channel (PUSCH) transmitted repetitively may include receiving, from a base station (BS), repetitive transmission configuration information for repetitively transmitting a PUSCH; receiving, from the BS, frequency hopping configuration information including configuration information for a hopping interval between a plurality of frequency resources for transmitting the PUSCH; and repetitively transmitting the PUSCH to the BS while performing frequency hopping at the hopping interval based on the repetitive transmission configuration information and the frequency hopping configuration information.

An OFDM modulation device includes a communication use specifying unit to specify a communication use of a communication frame, a header generating unit to generate a header of the communication frame in which communication use specifying information indicating the communication use specified by the communication use specifying unit is stored, a payload generating unit to generate a payload of the communication frame, and an inverse fast Fourier transform unit to generate a communication frame of time domain by executing an inverse fast Fourier transform of a size corresponding to the communication use specified by the communication use specifying unit on data of frequency domain including the header generated by the header generating unit and the payload generated by the payload generating unit.

A system includes a first device and a second device coupled to a link. The first device is to transmit one or more request frames for synchronization of a data layer, each request frame including a quantity of bits and an error code. The second device is to receive a first set of bits corresponding to the quantity of bits in each request frame. The second device is to perform an error decode operation on the first set of bits using a first portion of the first set of bits and determine the first set of bits correspond to a frame boundary of the one more request frames responsive to a success of the error decode operation. The second device is to transmit an acknowledgement of the synchronization of the data layer based on determining the first set of bits corresponds to the frame boundary.

A method performed by a UE is provided. The method includes receiving a first DCI format for scheduling at least one HARQ-ACK codebook in at least one first PUCCH in at least one first slot; receiving a second DCI format in a second slot, the second DCI format (i) for scheduling a retransmission of the HARQ-ACK codebook in a second PUCCH and (ii) indicating a first slot offset; and transmitting the first HARQ-ACK codebook scheduled in one of the at least one first slot via the second PUCCH. If the first slot offset is a positive value, the first slot is determined by counting backward a number of slots indicated by the first slot offset from the second slot. If the first slot offset is a negative value, the first slot is determined by counting forward the number of slots indicated by the first slot offset from the second slot.

A (repeater) node may identify a first indication of a waveform switch associated with a first link between a base station and the node or a second link between the node and a UE. A waveform switch associated with the first link may be triggered by the base station or the node. A waveform switch associated with the second link may be triggered by the node or the UE. The waveform switch may correspond to a first switch from an OFDM waveform to an SC waveform or a second switch from the SC waveform to the OFDM waveform. The base station may transmit, to the node, an indication of a post-waveform switch resource mapping between a first waveform associated with the first link and a second waveform associated with the second link. The node may execute the waveform switch associated with the first link or the second link.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine an adjusted contention window size for a listen-before-talk (LBT) procedure that increases channel access time fairness between a plurality of different groups of UEs. The UE may determine, via the LBT procedure, that a channel is idle based at least in part on the adjusted contention window size. The UE may transmit, to other UEs in a group of UEs that includes the UE, control information that enables a group channel occupancy time (COT) associated with the channel to be shared with the other UEs in the group of UEs. Numerous other aspects are described.

Wireless communication between a user equipment (UE) and a base station may occur on unlicensed spectrum. When wirelessly communicating on unlicensed spectrum, there is an expectation that there may be interference from others devices also transmitting on the same resources in the unlicensed spectrum. Systems and methods are therefore disclosed that aim to facilitate wireless communication in unlicensed spectrum. In some embodiments, systems and method are disclosed that are directed to the transmission of uplink control information (UCI) in unlicensed spectrum. The UCI may be or include hybrid automatic repeat request (HARQ) feedback. The HARQ feedback may correspond to a downlink data transmission that was also sent on unlicensed spectrum.

The present technology relates to a wireless communication apparatus and a wireless communication method that make it possible to read necessary information even in a case where a physical header at a top portion of a signal transmitted from a base station of another BSS fails to be received and the signal is received from the middle. The wireless communication apparatus includes a communication section configured to generate and transmit an OFDM signal in which second information is superimposed in a frequency axis direction of the OFDM signal which includes first information destined for one or more subordinate client devices. The present technology can be applied to a wireless communication apparatus and so forth that perform wireless communication, for example, standardized by IEEE 802.11.