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Techniques in configured grant uplink transmission in new radio (NR) systems operating in unlicensed spectrum

專利號
US11071139B2
公開日期
2021-07-20
申請人
Apple Inc.（US CA Cupertino）
發(fā)明人
Salvatore Talarico; Gang Xiong; Jeongho Jeon; Lopamudra Kundu; Hwan-Joon Kwon
IPC分類
H04W72/14; H04W72/04; H04W72/12; H04L5/00; H04L1/18; H04W80/02; H04W76/27; H04L1/00
技術(shù)領(lǐng)域
uci,dci,cg,pusch,ue,ul,may,or,ntcrm,circuitry
地域： CA CA Cupertino

摘要

Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for configuring, transmitting, and receiving configured grant uplink transmissions. Other embodiments may be described and claimed.

說明書

  • The time domain resources available for grant-free UL transmission may be derived from a tuple of parameters (i.e., {periodicity, offset/starting position, and duration}). In this case, the “offset/starting” may indicate the exact starting point from where the time domain resources are allowed for GUL begins, the “duration” may indicate the consecutive resources allowed for GUL starting from the “offset/starting” point, and the “periodicity” may indicate the period after which this defined window of available resources for GUL transmissions is repeated.

    • In some embodiments, physical resources in time and frequency domains may be configured by RRC signaling. Further, a bitmap in the DCI for an activation of Type 2 CG UL transmission may be used to indicate whether a subset or a full set of configured physical resources can be used for the CG UL transmission. Note that the physical resources may be located in the same or different slots, component carriers, or bandwidth portions (e.g., in different 20 MHz bandwidths that are located in different portions of a wide system bandwidth that is larger than 20 MHz).

    In some embodiments, for Type 1 CG UL transmission, physical resources in time and frequency domains may be configured by RRC configurations. Depending on the outcome of an LBT, UE may select one of the configured multiple time/frequency resources for grant-free uplink transmission.

    In some embodiments, the frequency-domain resources for grant-free UL transmission may be indicated via activation/deactivation DCI, and the time-domain resources may be configured via RRC.

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