Resource mapping and waveform generation for uplink transmission

    公开(公告)号:US11483870B2

    公开(公告)日:2022-10-25

    申请号:US16785360

    申请日:2020-02-07

    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for a user equipment (UE) to adjust a random access message that is transmitted to a base station in an asynchronous uplink transmission. The UE may use a constrained mapping of time and frequency resources for the random access message or transmit all portions of the message in a continuous transmission. The UE may also adjust the timing of the portions of the message. The base station may use a portion of the message, such as a preamble, to perform channel estimation for another portion of the message, such as a payload, to improve decoding of the transmitted message. Additionally, the UE may configure a waveform of the message to improve the continuous transmission of the message, for example by reducing interference between portions of the message.

    ORDERING BETWEEN PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) DEFERRAL AND OTHER PHYSICAL-LAYER PROCEDURES

    公开(公告)号:US20220329362A1

    公开(公告)日:2022-10-13

    申请号:US17658999

    申请日:2022-04-12

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that provide a mechanism for managing a sequential order for performing a deferral procedure and at least one other slot index-dependent procedure in a wireless communication system. In particular aspects, a user equipment, UE, may be configured to perform a first slot index-dependent procedure and a deferral procedure of uplink repetitions. The UE may determine a sequential order for performing the deferral procedure and the first slot index-dependent procedure, and may then perform the deferral procedure and the first slot index-dependent procedure in the sequential order. The sequential order may include performing the deferral procedure before the first slot index-dependent procedure, performing the deferral procedure after the first slot index-dependent procedure, or a sequential order that is based on a type of procedure of the first slot index-dependent procedure.

    Peak-to-average power ratio (PAPR) reduction techniques

    公开(公告)号:US11451425B2

    公开(公告)日:2022-09-20

    申请号:US17185603

    申请日:2021-02-25

    Abstract: Techniques for peak-to-average power ratio (PAPR) reduction are described. Wireless devices may use one or more PAPR shaping resources, such as expanded bandwidth and/or pulse-shaping filtering, for shaping a signal to reduce PAPR. For example, expanded bandwidth may be utilized for adding a cyclic affix (CA), such as may comprise a cyclic prefix (CP), cyclic suffix (CS), etc., and combinations thereof, to a frequency domain data signal to provide a CP augmented frequency domain data signal used to generate a reduced PAPR time domain data signal. Additionally or alternatively, pulse-shaping filtering may be applied to a frequency domain signal to provide a pulse-shaped frequency domain data signal used to generate a reduced PAPR time domain data signal. Other aspects and features are also claimed and described.

    VALIDATING UPLINK CONFIGURED GRANTS

    公开(公告)号:US20220248455A1

    公开(公告)日:2022-08-04

    申请号:US17727966

    申请日:2022-04-25

    Abstract: Methods, systems, and devices for wireless communications are described. Techniques are described herein for managing timers for hybrid automatic repeat request (HARQ) processes associated with multiple configured grants that are active at the same time. Techniques are also described herein for allocating HARQ identifiers (IDs) to HARQ processes associated with multiple configured grants that are active at the same time. A user equipment (UE) may configure timers to be associated with a HARQ ID and a configured grant. A base station or UE may include indicators of the configured grants associated with a HARQ process when exchanging signaling about the HARQ process. A UE may allocate HARQ IDs to multiple configured grants to reduce a likelihood that HARQ processes collide.

    FEEDBACK TECHNIQUES IN WIRELESS COMMUNICATIONS

    公开(公告)号:US20220247541A1

    公开(公告)日:2022-08-04

    申请号:US17586209

    申请日:2022-01-27

    Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may provide a feedback message to a base station that includes a feedback report that indicates successful or unsuccessful receipt of multiple downlink transmissions, and also includes an indication of a number of unsuccessful receipts that are due to unsuccessful receipt of data channel communications. The indication of the number of unsuccessful receipts of data channel transmissions may be provided as a binary representation of the total number, or may be provided as a quantized value in which each quantized point is associated with a certain number of unsuccessfully received data channel transmissions.

    GRADUAL SENSING FOR USER EQUIPMENT POWER SAVING IN SIDELINK OPERATION

    公开(公告)号:US20220225280A1

    公开(公告)日:2022-07-14

    申请号:US17148876

    申请日:2021-01-14

    Abstract: Methods, systems, and devices for wireless communication are described. In some cases, a sidelink user equipment (UE) operating in a power saving mode may identify a resource reservation configuration for communicating within a resource pool allocated for sidelink communications. The UE may operate in a first power state of the power saving mode during a sensing window. The sensing window may correspond to a resource selection window of the resource pool. The UE may transition, after the sensing window, from the first power state to a second power state that may consume more power than the first power state. The UE may identify a subset of resources of the resource pool in the resource selection window that are available for sidelink transmission by the UE based on transitioning between the first power state and the second power state.

    Downlink control channel monitoring capability for ultra-reliable low-latency communications

    公开(公告)号:US11388586B2

    公开(公告)日:2022-07-12

    申请号:US16863729

    申请日:2020-04-30

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a baseline physical downlink control channel (PDCCH) monitoring capability of the UE and an enhanced PDCCH monitoring capability of the UE, where the enhanced PDCCH monitoring capability facilitates monitoring by the UE of more PDCCH monitoring opportunities per slot than the baseline PDCCH monitoring capability. The UE may report, to a base station, the enhanced PDCCH monitoring capability and also the baseline PDCCH monitoring capability. The UE may receive, based on the UE reporting the enhanced PDCCH monitoring capability, at least one control resource set configuration that includes an indication that a corresponding control resource set is configured for enhanced PDCCH monitoring. The UE may monitor the corresponding control resource set in accordance with the enhanced PDCCH monitoring capability of the UE.

    MULTIPLEXING HIGHER PRIORITY AND LOWER PRIORITY UPLINK CONTROL INFORMATION ON A PHYSICAL UPLINK CONTROL CHANNEL

    公开(公告)号:US20220217709A1

    公开(公告)日:2022-07-07

    申请号:US17141196

    申请日:2021-01-04

    Inventor: Wei Yang Yi Huang

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may separately encode lower priority uplink control information (UCI) and higher priority UCI, and multiplex the encoded lower priority UCI and the encoded higher priority UCI on the same physical uplink channel (e.g., a physical uplink control channel (PUCCH)). The UE may be configured with multiple coding rates, which the UE may select from based on a payload size associated with each of the lower priority UCI and the higher priority UCI. Alternatively, the UE may be configured with a separate set of coding rates for the lower priority UCI and a separate set of coding rates for the higher priority UCI. The UE may multiplex the lower priority UCI and the higher priority UCI by mapping to physical uplink channel resources based on an order (e.g., mapping higher priority UCI followed by mapping lower priority UCI).

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