Abstract: Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A user equipment (UE) may receive a configuration indicating a mapping between a set of multiple subband indices and a set of multiple encoding parameter sets. The UE may apply, at a first distribution matcher, a first encoding parameter set to a first subset of a bit stream. The UE may also apply, at a second distribution matcher, a second encoding parameter set to a second subset of the bit stream. The a first encoding parameter set may be associated with a first subband index and the second encoding parameter set may be associated with a second subband index. The UE may then transmit a first modulated bit stream on a first subband, and a second modulated bit stream on a second subband.

Abstract: Methods, systems, and devices for wireless communications are described. A rateless code may be used to generate n encoded packets based on a set of source packets. A modulation technique may be used to generate first symbol packets from the encoded packets. And a layered modulation technique may be used to generate coded symbol packets from the first symbol packets. The layered modulation technique may include generating a coded symbol packet from a group of first symbol packets. Different weights may be applied to the different first symbol packets included in the group of first symbol packets before the first symbol packets in the group are combined together. A receiving device may demodulate the transmitted coded symbol packets to reconstruct the group of first symbol packets, use the reconstructed group of first symbol packets to recover the encoded packets, and use the encoded packets to reconstruct the source packets.

Abstract: Wireless communication systems and methods related to multiplexing of uplink control information (UCI) and configured grant-UCI (CG-UCI) of different priorities are provided. A user equipment (UE) determines that a first resource for an uplink transmission associated with a first priority at least partially overlaps with a second resource for a first configured grant-physical uplink shared channel (CG-PUSCH) transmission associated with a second priority different from the first priority. The UE determines whether the first priority is higher than the second priority. In response to determining whether the first priority is higher than the second priority, the UE transmits one of the uplink transmission in the first resource or the first CG-PUSCH transmission in the second resource and refrains from transmitting the other one of the uplink transmission in the first resource or the first CG-PUSCH transmission in the second resource.

Abstract: Mechanisms for directional channel occupancy monitoring for a frequency band among multiple networks are provided. In one aspect, a method of wireless communication includes monitoring, in a shared frequency band in a plurality of beam directions, for signals associated with one or more wireless networks different from the first wireless network. The monitoring includes: detecting, in the shared frequency band and in at least a first beam direction of the plurality of beam directions, a first signal associated with a second wireless network; and up-dating a channel occupancy list to indicate that at least a portion of the shared frequency band is occupied in at least the first beam direction. The method also includes transmitting, in the shared frequency band, a second signal in a second beam direction of the plurality of beam directions based on the channel occupancy list.

Abstract: Wireless communications systems and methods related to determining and transmitting delay measurements, such as propagation delay, between a base station (BS) and a user equipment (UE) are provided. In some aspects, a UE may receive, from a BS, a positioning reference signal (PRS). The UE may further transmit, in response to and at a predetermined time after the receiving the PRS, a sounding reference signal (SRS) to the BS. Further, the UE may receive, from the BS, a delay measurement corresponding to the PRS.

Abstract: Aspects of the disclosure relate to a user equipment (UE) for establishing a sidelink communication channel with a wireless network and perform time resource allocation of channel-state information reference signals (CSI-RS), as well as collision handling. The UE may receive a physical sidelink shared channel (PSSCH) signal via the sidelink communication, where the PSSCH includes one or more interlaced physical resource blocks. The UE may process time-division multiplexed CSI-RS in one or more resource blocks for triggering the PSSCH signal.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a configuration indicating a set of encoding parameters corresponding to a constellation shaping encoding process. The UE may calculate a number of bits of a first subset of a source bit stream, and the first subset of the source bit stream may include or encompass an input to a distribution matcher. The UE may apply, to the first subset, a distribution matcher parameter based on the set of encoding parameters. The UE may calculate a number of bits of a second subset of the source bit stream, and the second subset of the source bit stream may be concatenated with an output bit stream of the distribution matcher as an input to a channel encoder. The UE may signal the source bit stream to the base station.

Abstract: Wireless communication systems and methods related to dynamic indications of uplink transmission parameters via configured grant-UCI (CG-UCI) are provided. A user equipment (UE) receives, from a base station (BS), a first configuration indicating a first configured grant (CG) resource and a first transmission parameter associated with the first CG resource. The UE determines a second transmission parameter for transmitting a data block in the first CG resource. The second transmission parameter is different from the first transmission parameter. The UE transmits, to the BS in the first CG resource, a transmission including the data block and configured grant-uplink control information (CG-UCI) indicating the second transmission parameter, where the data block is transmitted based on the second transmission parameter.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, abase station may transmit multiple related downlink control information (DCI) transmissions to a user equipment (UE). The base station may transmit a first DCI in a control resource set (CORESET) and may transmit the second DCI in a configured physical downlink shared channel (PDSCH) occasion. The UE may determine the payload and the location of the second DCI for receiving the second DCI based on control signaling from the base station or based on the first DCI, or both. Accordingly, the UE may receive the first DCI and the second DCI and may transmit an uplink transmission to the base station in accordance with the first DCI and the second DCI.

Abstract: Methods, systems, and devices for wireless communications are described. The method may include identifying, for the UE, a configuration of a set of resource block sets of a radio frequency spectrum band, receiving, from a base station, a downlink control information message indicating, for each resource block set of the set of resource block sets, a communication direction for the resource block set, and communicating with the base station using one or more resource block sets of the set of resource block sets according to one or more communication directions indicated by the received downlink control information message, the one or more communication directions corresponding to respective ones of the one or more resource block sets.

Abstract: Wireless communications systems and methods related to multiplexing a sidelink-synchronization signal block (S-SSB) transmission with a physical sidelink control channel (PSCCH)/physical sidelink shared channel (PSSCH) transmission for occupancy channel bandwidth (OCB) fulfilment are provided. A user equipment (UE) determines a multiplex configuration for multiplexing a sidelink transmission with a S-SSB transmission in a sidelink bandwidth part (BWP). The UE communicates, in the sidelink BWP during a sidelink slot, the S-SSB transmission. The UE communicates, in the sidelink BWP during the sidelink slot, the sidelink transmission, where the S-SSB transmission and the sidelink transmission are communicated by multiplexing the sidelink transmission and the S-SSB transmission based on the multiplex configuration.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information indicating one or more fixed frame period (FFP) configurations in a frame based equipment (FBE) mode. The UE may receive, from the base station, downlink control information (DCI) that schedules an uplink transmission, wherein the DCI includes content to enable or disable a UE-initiated channel occupancy time using the one or more FFP configurations. The UE may determine whether to initiate a channel occupancy time or share a channel occupancy time initiated by the base station to perform the uplink transmission based at least in part on the content in the DCI scheduling the uplink transmission. Numerous other aspects are provided.

Abstract: Apparatus, methods, and computer-readable media for transmission of downlink feedback information using downlink control information format 0_2 are disclosed herein. A user equipment (UE) may receive, from a base station on a first subband, a downlink control information (DCI) having a first predetermined DCI format or a second predetermined DCI format, in which the second predetermined DCI format has a length smaller than the first predetermined DCI format.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may start a timer after transmitting an uplink communication on a physical uplink shared channel to a base station using a configured grant. The UE may determine whether the uplink communication is acknowledged as received by the base station based at least in part on determining whether a downlink communication from the base station is detected within a time duration associated with the timer. Numerous other aspects are provided.

Abstract: Aspects described herein relate to encoding wireless communications using feedback from receiving devices to achieve an adaptive coding rate, which can include generating, for a set of source symbols representing data to be transmitted in a broadcast channel, a set of encoded symbols for transmitting in the broadcast channel, transmitting a first number of the set of encoded symbols over the broadcast channel, requesting, based on transmitting the first number of the set of encoded symbols, feedback from a set of user equipment (UEs), and determining, based at least in part on the feedback, whether to continue transmitting a second number of the set of encoded symbols or begin transmitting a new set of encoded symbols representing new data to be transmitted in the broadcast channel.

Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for polar coding control information together with combined cyclic redundancy check (CRC) information. The combined CRC information may include a number of CRC bits selected to jointly decode and verify the control information to reduce the CRC overhead.

Abstract: Methods and apparatus for constructing polar codes are provided. A transmitter determines at least one set of parameters corresponding to data to be transmitted, and a set of sorting indices corresponding to bits of the data to be transmitted based on the set of parameters, the set of sorting indices indicating a position set of the bits to be transmitted. The transmitter polar encodes the data based at least on the set of parameters and the set of sorting indices to generate a coded block of the data, and transmits the coded block of the data.

Abstract: Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may generate configured grant uplink control information (CG-UCI) based at least in part on a determination that a configured grant (CG) retransmission timer is not configured. The UE may transmit the CG-UCI on a physical uplink channel to a base station. In some aspects, the UE may receive a configuration indicating that retransmission on a CG resource is enabled, in association with a determination that a CG retransmission timer is not configured. The UE may transmit a retransmission on the CG resource based at least in part on receiving a message that includes hybrid automatic repeat request feedback for one or more CG communications. Numerous other aspects are provided.

Abstract: Dynamic grants (DG) for retransmission by a user equipment (UE) use the communication resource more efficiently while configured grants (CG) for retransmission by the UE reduce overhead and latency. A base station (BS) uses radio resource control signaling to configure the UE with a retransmission timer or without a retransmission timer. The BS transmits to the UE a set of CG configurations configuring a set of configured grant uplink (CG-UL) processes. The set of CG configurations includes information indicating whether or not a cg-RetransmissionTimer is associated with the CG-UL processes. The BS is also configured to receive communication on UL from the UE. The communication from the UE is received based on the set of CG-UL processes and the indication whether or not a cg-RetransmissionTimer is associated with the CG-UL processes.