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Repetition of downlink control channels based on uplink messages

專利號(hào)
US11528735B2
公開日期
2022-12-13
申請(qǐng)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 examples, the set of downlink control channels that may be repeated from the base station 404 (e.g., the set of repeatable downlink control channels) may include at least one of a physical downlink control channel (PDCCH) for remaining minimum system information (RMSI), a PDCCH for a random access response message (e.g., message 2 (Msg 2) 410 in FIG. 4), a PDCCH for a retransmission grant of a radio resource connection (RRC) connection setup message, a PDCCH for a contention resolution message (e.g., message 4 (Msg 4) 414 in FIG. 4), or a unicast PDCCH before a channel state information (CSI) report is transmitted from the UE 402.

In some examples, the set of indications may include at least one of a physical random access channel (PRACH) preamble from a preconfigured subset of PRACH preambles, a PRACH preamble repeated over multiple random access channel (RACH) occasions, a PRACH preamble on a predefined subset of RACH occasions, a PRACH preamble using a designated resource allocation (e.g., a resource allocation from a designated set of frequency allocations or resource blocks), a request or a predefined message in a radio resource connection (RRC) connection request message (e.g., message 3 (Msg 3) 412 in FIG. 4), and/or a first uplink transmission after reception of a contention resolution message (e.g., the first UL message 416 after message 4 (Msg4) 414 in FIG. 4).

權(quán)利要求

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