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Method and apparatus for channel usage in unlicensed spectrum considering beamformed transmission in a wireless communication system

專利號(hào)
US10841914B2
公開(kāi)日期
2020-11-17
申請(qǐng)人
ASUSTek Computer Inc.（TW Taipei）
發(fā)明人
Jia-Hong Liou; Ming-Che Li
IPC分類
H04W72/04; H04W16/14; H04B7/02; H04L5/00
技術(shù)領(lǐng)域
ue,tti,beam,ul,subframe,scheduling,channel,in,trp,or
地域： Taipei

摘要

A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE monitors or receives a control signal within a channel occupancy, wherein the control signal indicates a number of consecutive TTIs (Transmission Time Intervals) and TTI format(s) related information of the TTIs. The method further includes the UE derives transmission direction of symbols in the TTIs or functionality of symbols in the TTIs from the information. The method also includes the UE considers the last TTI of the indicated TTIs as an ending TTI of the channel occupancy. In addition, the method includes the UE performs DL (Downlink) data reception or UL (Uplink) data transmission until the ending TTI.

說(shuō)明書(shū)

  • The field indicates the absolute timing offset for the PUSCH transmission.
  • Otherwise,
  • The first two bits of the field indicate the timing offset, relative to the UL offset l as defined in section 13A of [3], for the PUSCH transmission.
  • The last two bits of the field indicate the time window within which the scheduling of PUSCH via triggered scheduling is valid.
  • Number of scheduled subframes—1 or 2 bits. The 1-bit field applies when maxNumberOfSchedSubframes-Format4B-r14 is configured by higher layers to two, otherwise the 2-bit field applies.
  • Resource block assignment—5 or 6 bits provide the resource allocation in the UL subframe as defined in section 8.1.4 of [3].
  • HARQ process number-4 bits. The 4-bit applies to the first scheduled subframe, and the HARQ process numbers for other scheduled subframes are defined in section 8.0 of [3].
  • Redundancy version—maxNumberOfSchedSubframes-Format4B-r14 bits. Each scheduled PUSCH corresponds to 1 bit as defined in section 8.6.1 of [3]. Redundancy version is common for both transport blocks.
  • TPC command for scheduled PUSCH—2 bits as defined in section 5.1.1.1 of [3].
  • Cyclic shift for DM RS and OCC index—3 bits as defined in section 5.5.2.1.1 of [2].
  • CSI request—1, 2 or 3 bits as defined in section 7.2.1 of [3]. The 2-bit field applies to UEs configured with no more than five DL cells and to
  • UEs that are configured with more than one DL cell;

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