Method and apparatus for channel usage in unlicensed spectrum considering beamformed transmission in a wireless communication system
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.
說明書
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Counter N is determined as described in Subclause 15.1.1 for carrier cj∈C, and is denoted as Ncj , where cj is the carrier that has the largest CWp value. For each carrier ci, Nci =Ncj . When the eNB ceases transmission on any one carrier for which Nci is determined, the eNB shall reinitialise Nci for all carriers.
15.1.5.2 Type B Multi-Carrier Access Procedure
A carrier cj∈C is selected by the eNB as follows
the eNB selects cj by uniformly randomly choosing cj from C before each transmission on multiple carriers ci∈C, or
the eNB selects cj no more frequently than once every 1 second,
where C is a set of carriers on which the eNB intends to transmit, i=0, 1, . . . q?1, and q is the number of carriers on which the eNB intends to transmit.
To transmit on carrier cj
the eNB shall perform channel access on carrier cj according to the procedures described in Subclause 15.1.1 with the modifications described in 15.1.5.2.1 or 15.1.5.2.2.
To transmit on carrier ci≠cj, ci∈C
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