A communication device determines whether a PHY data unit is to be transmitted in a first frequency band from among multiple frequency bands in which a WLAN communication protocol permits operation. The multiple frequency bands also include a second frequency band. The communication device determines whether the PHY data unit is to include a PS-Poll frame, and whether a BSS color is currently disabled for the WLAN. In response to i) determining that the PHY data unit is to be transmitted in the first frequency band, ii) determining that the PHY data unit is not to include a PS-Poll frame, and iii) determining that the BSS color is not currently disabled for the WLAN: the communication device determines that a TXOP duration subfield in a PHY preamble of the PHY data unit cannot be set to a value defined by the WLAN communication protocol for indicating a TXOP duration that is unspecified.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) including a hybrid automatic repeat request (HARQ) acknowledgement (ACK) retransmission indicator field set to indicate one-shot HARQ codebook retransmission. The UE may transmit, based at least in part on receiving the DCI, a HARQ codebook retransmission for a slot HARQ offset associated with another field of the DCI. Numerous other aspects are described.

Methods, systems, and devices for wireless communications are described. In some examples, a base station may recover a UE from a Msg3 failure during an RA procedure. During the RA procedure, the base station may transmit a RAR message to the UE and in response to the RAR message the UE may transmit an uplink message (e.g., Msg3) to the base station over a first resource indicated in the RAR message. If the base station fails to decode or receive the uplink message over the first resource, the base station may transmit a grant to the UE indicating a second resource for retransmitting the uplink message and the UE may retransmit uplink message to the base station according to the grant.

An transmission apparatus of the present disclosure comprises a transmission signal generator which, in operation, generates a transmission signal that includes a legacy preamble, a non-legacy preamble and a data field, wherein the non-legacy preamble comprises a first signal field and a second signal field, the second signal field comprising a first channel field and a second channel field, each of the first channel field and the second channel field comprising a common field that carries resource unit (RU) allocation information and a user-specific field that carries per-user allocation information for one or more terminal stations, and wherein a part of the user-specific field of one of the first channel field and the second channel field whichever is longer than the other channel field in length before appending padding bits is relocated to the other channel field; and a transmitter which, in operation, transmits the generated transmission signal.

There is provided an apparatus, said apparatus comprising means for providing first control information using a first control channel and at least second control information using a second control channel, wherein the first control information comprises at least an indication of resource reservation for an associated data channel and the second control information comprises at least transmission format information for the associated data channel, wherein the associated data channel comprises periodic or aperiodic data traffic.

Provided are an information transmission and receiving method and device, a storage medium and an electronic apparatus. The information transmission method includes: transmitting at least two pieces of the following information in a multiplexing manner on a physical channel: channel state information (CSI), first control information or data information. The first control information includes at least one of: hybrid automatic retransmission request acknowledgement (HARQ-ACK) information or scheduling request (SR) information.

The present disclosure discloses a method for transmitting downlink feedback information, a base station, and a terminal device, so as to ensure that the base station correctly receives the downlink feedback information sent by the terminal device, thereby effectively improving a transmission success rate of the downlink feedback information. In embodiments of the present disclosure, the method includes: sending, by the base station, indication information to the terminal device, where the indication information is used to indicate a target time-frequency resource location, the target time-frequency resource location is a time-frequency resource location at which the terminal device sends the downlink feedback information, and the downlink feedback information is used to feed back a reception status of downlink data that should be received by the terminal device; and receiving, by the base station, the downlink feedback information sent by the terminal device.

An access point manages a first wireless local area network (WLAN) in a 6 GHz radio frequency (RF) band and ii) a second WLAN operating in another RF band. The access point generates a physical layer (PHY) data unit to include a management frame having i) first information indicating first network parameters of the first WLAN, and ii) second information indicating second network parameters of the second WLAN. The AP transmits the PHY data unit in the other RF band to provide, to any client stations that are operating in the other RF band and that are also capable of operating in the 6 GHz band: the first information indicating the first network parameters of the first WLAN operating in the 6 GHz RF band to assist the any client stations that are operating in the other RF band with joining the first WLAN operating in the 6 GHz RF band.

Provided are a method and device for performing joint transmission in wireless LAN system. Particularly, an M-AP transmits a first control frame for informing of joint transmission to first and second S-APs. The M-AP transmits a data frame to the first and second S-APs. The M-AP transmits a second control frame, comprising scheduling information necessary for joint transmission, to the first and second S-APs. The M-AP performs joint transmission to an STA by means of the first and second SAPs. The data frame is transmitted to the STA from the first and second S-APs by means of joint transmission.

Provided are an uplink transmission method and apparatus. The UE determines a time-domain overlapping channel group to be transmitted in a time unit, where the time-domain overlapping channel group includes a group of PUCCHs and a group of PUSCHs. The group of PUCCHs and the group of PUSCHs include a PUCCH and a PUSCH that overlap in time domain, where the PUCCH included in the group of PUCCHs is configured to transmit an uplink SR and the PUSCH included in the group of PUSCHs is configured to transmit uplink data. The UE performs multiplexing transmission on UCI and uplink data to be transmitted by the time-domain overlapping channel group, where the UCI includes the uplink SR.