Methods and systems for channel state acquisition with self-interference in full duplex systems

    公开(公告)号:US12096423B2

    公开(公告)日:2024-09-17

    申请号:US17088908

    申请日:2020-11-04

    申请人: Xi Zhang Jianglei Ma

    发明人: Xi Zhang Jianglei Ma

    摘要: Some aspects of the present disclosure enable a network to account for impacts of digital transmit and receive precoding at the user equipment (UE) side in the presence of UE self-interference that may occur during full duplex (FD) operation. Some aspects of the present disclosure include joint downlink (DL) node selection or beam selection, or both, and UE self-interference emulation, so that the UE is enabled with FD operation that includes receiving from one node, but transmitting towards another node. When compared with the case where the UE receives from, and transmits, to a same node, because when two separate nodes are involved and the two nodes are more physically separated, the chance of achieving higher cross-link isolation, and hence FD transmission, is higher.

    Flexible frame structure for wireless communication

    公开(公告)号:US11855918B2

    公开(公告)日:2023-12-26

    申请号:US16887361

    申请日:2020-05-29

    IPC分类号: H04L5/00 H04L27/26

    CPC分类号: H04L5/0044 H04L27/2628

    摘要: Current radio frame structures in Long-Term Evolution (LTE) and New Radio (NR) have some restrictions. A frame structure is disclosed herein that aims to provide more flexibility. Embodiments of the flexible frame structure include different parameters that are flexible, i.e. that are configurable. A non-exhaustive list of parameters that may be configurable include: length of the frame; length of a subframe (if a subframe is even defined); length of a slot and/or number of symbol blocks in a slot (if a slot is even defined); length of the CP and/or data portion in a symbol block, or ratio of CP to data portion, which may vary between symbol blocks; downlink/uplink switching gap length, etc.

    Systems and methods for signaling for semi-static configuration in grant-free uplink transmissions

    公开(公告)号:US11516826B2

    公开(公告)日:2022-11-29

    申请号:US16544274

    申请日:2019-08-19

    摘要: Methods and systems are provided for signaling for semi-static configuration in grant free uplink transmissions. Radio resource control (RRC) signaling is used to provide information from a base station to a user equipment (UE) that configure the grant free transmission resource to be used by the UE. In some implementations, the RRC signaling may be used in conjunction with system information that is transmitted to all UEs and/or Downlink Control Information (DCI) that the UE needs to access subsequent to the RRC signaling. In some implementations, the DCI includes an activation or deactivation indicator that the UE monitors to determine when the UE is allowed to transmit to the BS or should stop transmitting. Implementations allow for grant free transmission resources to be configured on an individual user based and a group basis.