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    Random access procedure fallback
    1.
    发明授权
    Random access procedure fallback 有权

    公开(公告)号：US12295043B2

    公开(公告)日：2025-05-06

    申请号：US18243234

    申请日：2023-09-07

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaoxia Zhang ,  Jing Sun ,  Sony Akkarakaran ,  Muhammad Nazmul Islam ,  Tao Luo

    IPC: H04W74/0833 ,  H04W36/00 ,  H04W76/10

    Abstract: This disclosure provides systems, methods and apparatus for wireless communications that support fallback from a 2-step to a 4-step random access procedures. A user equipment (UE) may establish a connection with a base station using a random access procedure. The random access procedure may be a 2-step random access procedure and reduce a number of handover exchange messages. The 2-step random access procedure may include the UE transmitting, to the base station, a first random access message including a preamble and a payload. In some implementations, the base station may receive the preamble but fail to receive or decode the payload. The random access procedure may utilize the received preamble information instead of performing retransmission of the first random access message. The base station may transmit a second random access message to the UE indicating, explicitly or implicitly, a fallback to a 4-step random access procedure for connection establishment.

    Beam sweeping during an on-period of a DRX cycle
    2.
    发明授权
    Beam sweeping during an on-period of a DRX cycle 有权

    公开(公告)号：US12289787B2

    公开(公告)日：2025-04-29

    申请号：US17572311

    申请日：2022-01-10

    Applicant: QUALCOMM Incorporated

    Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Wooseok Nam ,  Junyi Li ,  Juergen Cezanne

    IPC: H04W76/28 ,  H04B7/06

    Abstract: Techniques are described herein for periodically transmitting a first set of signals (e.g., reference signals) during an on-period of a discontinuous reception (DRX) cycle rather than during an off-period of the DRX cycle. Such techniques may enable a user equipment (UE) operating in a DRX mode to conserve additional power during the DRX cycle. A periodicity for transmitting the first set of signals during the on-period may be determined. The periodicity may indicate that every one-in-N DRX cycles, the first set of signals are to be transmitted during the on-period. During other DRX cycles, the first set of signals may be transmitted during the off-period. When the first set of signals are transmitted during the on-period, the UE may refrain from activating certain components during the off-period, thereby conserving power.

    Beam changing for a repeater node
    10.
    发明授权
    Beam changing for a repeater node 有权

    公开(公告)号：US12113602B2

    公开(公告)日：2024-10-08

    申请号：US18156792

    申请日：2023-01-19

    Applicant: QUALCOMM Incorporated

    Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Junyi Li ,  Ori Shental

    IPC: H04B7/155 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04W72/044

    CPC classification number: H04B7/1555 ,  H04B7/0695 ,  H04L5/0098 ,  H04L27/2666 ,  H04W72/046

    Abstract: This disclosure provides systems, apparatus, methods, and computer-readable media for beam switching by a repeater node that forwards communications from one of a first node or a second node to the other of the first node or the second node. For example, after a change of position by the second node, the first node may provide the repeater node an instruction to perform a beam change operation to communicate with the second node. In some aspects, performing the beam change operation by the repeater node may improve reliability of wireless communications, such as by focusing signal energy in a particular direction. Further, a beam change delay time interval or a scheduling of the beam change delay time interval may be selected based on scheduling associated with other nodes, which may reduce a number of messages sent to the repeater node (such as by reducing instructions to change beam directions).

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