Method and apparatus for channel usage in unlicensed spectrum considering beamformed transmission in a wireless communication system
摘要
說明書
In step 2410, the network node indicates transmission direction of symbols in the TTIs or functionality of symbols in the TTIs via the information. In one embodiment, the transmission direction or functionality of symbol could be indicated in the information comprises at least any of “DL”, “UL”, “No DL and No UL”, “empty”, or “reserved”.
In step 2415, the network node sets the last TTI of the indicated TTIs corresponds to an ending TTI of the channel occupancy.
In step 2420, the network node performs UL data reception or DL data transmission until the ending TTI. In one embodiment, the network does not perform UL reception or DL transmission for a reference signal or a channel in symbols indicated as “No DL and No UL” or “empty” or “reserved”. The ending TTI could be the last TTI within a channel occupancy, and wherein the last TTI may be a partial TTI, which contains a subset of symbols within a full TTI.
In one embodiment, the network node could perform reception or transmission before and/or in an ending symbol within the ending TTI, and does not perform UL data reception or DL data transmission after the ending symbol, until next channel occupancy.
In one embodiment, if the control signal is for a licensed cell or licensed channel or licensed spectrum and comprises slot format related information, the network node does not set the last TTI indicated in the control signal corresponds to the ending TTI of the channel occupancy; and if the control signal is for an unlicensed cell or unlicensed channel or unlicensed spectrum and comprises slot format related information, the network node sets the last TTI indicated in the control signal corresponds to the ending TTI of the channel occupancy.
