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Repetition of downlink control channels based on uplink messages

專利號
US11528735B2
公開日期
2022-12-13
申請人
QUALCOMM Incorporated（US CA San Diego）
發(fā)明人
Mahmoud Taherzadeh Boroujeni; Tao Luo; Jelena Damnjanovic
IPC分類
H04W72/12; H04W76/28; H04W76/27; H04L1/18; H04L5/00; H04W72/04
技術(shù)領(lǐng)域
downlink,ue,channel,message,repetition,pdcch,control,station,prach,may
地域： CA CA San Diego

摘要

The aspects described herein may enable a base station to repeat a downlink control channel based on one or more indications received from a user equipment (UE). This may allow the base station to efficiently use network resources to enhance coverage of downlink control channels for different steps of a network access procedure as needed by a UE. For example, a UE may determine to activate or deactivate repetition of a downlink control channel associated with a network access procedure. The UE may transmit an indication configured to activate or deactivate repetition of the downlink control channel.

說明書

In some aspects of the disclosure, the base station 404 may transmit a row identifier in RMSI to the UE 402 to indicate which downlink control channels may be repeated (e.g., to indicate a set of repeatable downlink control channels), the indication for activating or deactivating repetition of those downlink control channels, and any rules/parameters for controlling the repetition of those downlink control channels. For example, the base station 404 may transmit the bits ‘001’ (assigned to the second row 612 in the configuration information table 600) to the UE 402 in RMSI. This may inform the UE 402 that transmission of a PRACH preamble with Type B format may serve as an indication for activating repetition of the PDCCH for message 2 and the PDCCH for message 4 of a random access procedure (e.g., for message 2 (Msg2) 410 and message 4 (Msg4) 414 of the 4-step random access procedure in FIG. 4). Moreover, the UE 402 may be aware that beam reporting in message 3 (e.g., in the message 3 (Msg3) 412 of the 4-step random access procedure) on PUSCH deactivates repetition of PDCCH for message 4 (e.g., for the message 4 (Msg4) 414 of the 4-step random access procedure in FIG. 4).

FIG. 7 is a flowchart 700 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 402; the apparatus 902/902′; the processing system 1014, which may include the memory 360 and which may be the entire UE 402 or a component of the UE 402, such as the TX processor 368, the RX processor 356, and/or the controller/processor 359).

權(quán)利要求

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