Narrowband PDCCH DMRS bundling with enhanced coverage

    公开(公告)号:US11323236B2

    公开(公告)日:2022-05-03

    申请号:US16911354

    申请日:2020-06-24

    Abstract: Narrowband (NB) Physical Downlink Control Channel (PDCCH) demodulation reference signals (DMRS) bundling coverage enhancements are disclosed. In some aspects, NB PDCCH DMRS bundling resources and timing are allocated in a virtual domain by a transmitting device, such as a base station. In some aspects the allocated resources are control channel elements (CCEs); the CCEs are allocated according to a pattern in the virtual domain. The base station may transmit NB PDCCH transmissions and corresponding DMRS transmissions in physical domain resources that correspond to the virtual domain resources, the CCE allocation pattern. In some aspects, the NB PDCCH DMRS can be used with PDCCH repetitions. To illustrate, a base station may repeat a PDCCH transmission (e.g., payload data thereof) in multiple particular PDCCH candidates of a plurality of PDCCH candidates. The particular PDCCH candidates may be identified based on PDCCH candidate number or a reference slot or search space set occasion.

    Non-uniform demodulation reference signal bundling

    公开(公告)号:US11310023B2

    公开(公告)日:2022-04-19

    申请号:US16889534

    申请日:2020-06-01

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for signaling a semi-static configuration for demodulation reference signal (DMRS) bundling across non-uniform bundles of transmission time intervals (TTIs). A base station may transmit control signaling to a user equipment (UE) that schedules resources for DMRSs and associated data channels across the TTIs. For example, the base station may transmit a bundling configuration to the UE that may configure a bundling sequence defining an order for the bundles and a number of TTIs for each bundle. Based on the control signaling, the UE may determine a reference signal bundling pattern for receiving the DMRSs and the associated data channels, where the reference signal bundling pattern may indicate the bundling sequence. The UE may accordingly receive the DMRSs and the associated data channels and perform channel estimation on the data channels.

    APERIODIC AND CROSS COMPONENT CARRIER POSITIONING REFERENCE SIGNALS

    公开(公告)号:US20220006586A1

    公开(公告)日:2022-01-06

    申请号:US17477030

    申请日:2021-09-16

    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support aperiodic and cross component carrier PRSs. Generally, the described techniques provide for receiving a dynamic trigger indicating that a UE is to monitor for one or more downlink positioning reference signals (PRSs). The UE may generate a timing measurement for the one or more downlink PRSs, and may transmit a measurement report that indicates the timing measurement to a transmission/reception point. A UE may also transmit a capability indicator, indicating that the UE is capable of maintaining phase coherence for a PRS that spans multiple component carriers, receive control signaling that indicates multiple component carries on which the PRS is phase coherent, generate a timing measurement for the PRS based on the control signaling, and transmit a measurement report that indicates the timing measurement to the transmission/reception point.

    Dynamic adjustment of transmission properties with continuous precoding

    公开(公告)号:US11206065B2

    公开(公告)日:2021-12-21

    申请号:US16557776

    申请日:2019-08-30

    Abstract: Aspects of the disclosure relate to a transmitting device, which may explicitly or implicitly signal the use of continuous precoding for a resource block (RB) cluster. For example, the transmitting device may implicitly indicate that continuous precoding is applied to an RB cluster by dynamically controlling one or more parameters of a transmission over those RBs. Further, when continuous precoding is applied to an RB cluster, the transmitting device may explicitly or implicitly signal the dynamic control over one or more transmission properties, with an aim to maximize the benefits of such continuous precoding. Other aspects, embodiments, and features are also claimed and described.

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