Pilot signaling supporting digital post-distortion (DPOD) techniques

    公开(公告)号:US11997036B2

    公开(公告)日:2024-05-28

    申请号:US17846350

    申请日:2022-06-22

    Abstract: Methods, systems, and devices for wireless communications are described. Some systems may support digital post-distortion (DPoD) processing at a base station. In some such systems, a user equipment (UE) may process a data message for transmission, where a resulting signal associated with the data message includes non-linear characteristics that are handled by DPoD on the receiver-side. The non-linear characteristics may cause the signal to leak into out-of-band (OOB) resources, potentially resulting in interference. In some examples, the UE may transmit the data message to the base station in a multi-user system. To support mitigation of non-linear interference on signaling by other UEs, the UE may additionally transmit pilot signals in OOB resources (e.g., in addition to in-band resources) where the non-linearity may be expected to negatively affect other communications. The base station may use the OOB pilot signals to perform channel estimation and interference mitigation.

    TECHNIQUES FOR SENSOR SHARING OF WI-FI INTERFERENCE DETECTION

    公开(公告)号:US20240146426A1

    公开(公告)日:2024-05-02

    申请号:US18051188

    申请日:2022-10-31

    CPC classification number: H04B17/345 H04W24/10 H04W4/40

    Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein provide for sharing detection of radio frequency interference among user equipments (UEs). If a first UE detects radio frequency interference affecting a vehicle-to-everything (V2X) link, the first UE may transmit a V2X message to a second UE indicating that the first UE detected the radio frequency interference. The second UE may adjust V2X communications in order to compensate for the radio frequency interference or modify radio frequency interference detection schemes.

    Configurable analog-to-digital conversion parameters

    公开(公告)号:US11949426B2

    公开(公告)日:2024-04-02

    申请号:US17124196

    申请日:2020-12-16

    Abstract: Aspects relate to analog-to-digital conversion of an analog signal. The resolution (number of bits) and/or the quantization levels of the analog-to-digital conversion may be configurable. A device may configure its analog-to-digital conversion parameters. For example, a first device may reduce the number of bits for its analog-to-digital converter to reduce power consumption. In this case, the first device may transmit an indication of selected analog-to-digital conversion parameters to a second device that will transmit to the first device. In this way, the second device may take appropriate action, if needed. A device may request another device to use certain analog-to-digital conversion parameters. For example, a first device may determine that a second device should use a larger number of bits for its analog-to-digital conversion process to improve the quality of the communication between the first and second devices.

    Full-duplex index modulation
    15.
    发明授权

    公开(公告)号:US11936599B2

    公开(公告)日:2024-03-19

    申请号:US17175857

    申请日:2021-02-15

    CPC classification number: H04L5/14 H04W72/20

    Abstract: Methods, systems, and devices for wireless communications are described. A receiving device and a transmitting device may utilize index modulation for full-duplex operations. The transmitting device, such as a base station or a user equipment (UE), may define blocks of resource elements (REs) for transmissions. The transmitting device may then transmit a power boosted index modulated signal at a data RE location within a resource allocation and may skip transmitting within the remaining REs of the resource allocation. The transmitting device may indicate the number of REs per RE block to the receiving device (e.g., a UE). The receiving device may use this information to perform energy detection for determining which REs within an RE block include the power boosted index modulated transmission and which REs within the RE block are empty REs. In some cases, the receiving device may use the empty REs for performing noise estimation.

    NON-LINEARITY ESTIMATION TECHNIQUES FOR DIGITAL POST DISTORTION (DPOD) IN A WIRELESS SYSTEM

    公开(公告)号:US20240039775A1

    公开(公告)日:2024-02-01

    申请号:US17877722

    申请日:2022-07-29

    CPC classification number: H04L27/2614 H04L5/0051 H04L1/0003

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for non-linearity estimation techniques for digital post distortion (DPoD) in a wireless system. In some aspects, a first wireless device may estimate a power amplifier (PA) non-linearity associated with a second wireless device using select signaling from the second wireless device. For example, the first wireless device may use a received signal to estimate the PA non-linearity if a dynamic power range associated with the signal triggers the estimation of the PA non-linearity (such as if the dynamic power range associated with the signal satisfies, or is expected to satisfy, a threshold dynamic power range). If the dynamic power range of the signal triggers the estimation of the PA non-linearity, the first wireless device may introduce DPoD to signaling received from the second wireless device in accordance with the estimation of the PA non-linearity.

    SIGNALING PATTERNS FOR TIME DRIFT REFERENCE SIGNALS

    公开(公告)号:US20240014991A1

    公开(公告)日:2024-01-11

    申请号:US17859865

    申请日:2022-07-07

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit one or more messages that indicate a capability of the UE to support the reception of demodulation reference signals (DMRS) and time drift reference signals (TDRS) according to one or more signaling patterns configured by the network. The UE may then receive one or more control messages that indicate a first signaling pattern for one or more DMRSs and a second signaling pattern for one or more TDRSs, where the first signaling pattern corresponds to or is based on the second signaling pattern. The UE may receive a downlink shared channel multiplexed with the one or more DMRSs according to the first signaling pattern and may receive the downlink shared channel multiplexed with the one or more TDRSs according to the second signaling pattern.

    REPEATER BEAM REQUESTS FOR TRANSPARENT BEAM MANAGEMENT

    公开(公告)号:US20230403066A1

    公开(公告)日:2023-12-14

    申请号:US17835767

    申请日:2022-06-08

    CPC classification number: H04B7/15507 H04W56/001 H04W16/28 H04B7/0695

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may report an initial capability to maintain latency conditions and a number of supported beams (e.g., a threshold number of beams the UE can support for relaying downlink communications such as synchronization signal blocks (SSBs)). A network entity may then transmit multiple SSBs directly to the repeater (e.g., on the same beam). The repeater may relay the SSBs across multiple beams to provide service to a coverage area. After relaying signaling between served UEs and the network entity, the repeater may transmit a report requesting a specific (e.g., improved or more accurate) number of beams (e.g., more beams or fewer beams than the number of SSBs initially provided). Upon receiving an updated configuration of a number of beams, the repeater may receive more SSBs on a single beam, and relay SSBs on the updated number of beams.

    Superimposed pilots signaling for dense MU-MIMO

    公开(公告)号:US11824603B1

    公开(公告)日:2023-11-21

    申请号:US17935545

    申请日:2022-09-26

    CPC classification number: H04B7/0452 H04B7/0456

    Abstract: An apparatus for wireless communication at a UE is provided. The apparatus is configured to receive one or more pilot signals superimposed on a data signal from a network entity. The apparatus is further configured to receive an indication of a first set of locations in at least one of time or frequency from the network entity. The data signal or the scrambled data signal is near orthogonal to a channel estimation filter of the transmission channel between the network entity and the UE at the first set of locations. The apparatus is further configured to transmit characteristics of the transmission channel to the network entity. The characteristics of the transmission channel is determined based at least in part on the first set of locations.

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