Method and apparatus for channel usage in unlicensed spectrum considering beamformed transmission in a wireless communication system
摘要
說(shuō)明書(shū)
In one embodiment of Alternative 1, within the current channel occupancy, the network could transmit the common control signal to indicate information of a subframe or slot, which is the ending subframe. The information indicates that symbol #0 to symbol #7 are DL symbols, and the other symbols, symbol #8 to symbol #13, are No DL and No UL, assuming one subframe or slot contains 14 symbols. Then, the UE assumes the applied subframe or slot is the ending subframe or slot. The structure of the ending subframe/slot follows information in the common control signal. Symbol #0 to symbol #7 are occupied and used for DL transmission. The other symbols are unoccupied. A similar embodiment can be implemented for Alternative 2.
In one embodiment, the “subframe” or “slot” can be other scheduling time unitor TTI, such as mini-slot.
In one embodiment, the scheduling time unit or TTI indicated in the control signal may be partial. A partial scheduling time unit or TTI could mean a scheduling time unit or TTI which contains a subset of symbols within one scheduling time unit or TTI. For example, a full scheduling time unit or TTI may contain 14 symbols and a partial scheduling time unit or TTI may contain number of symbols smaller than 14.
In one embodiment, the control signals could be transmitted in different channel occupancy may carry different or the same content.
It should be noted that the disclosed solutions can be used to resolve how to indicate information of any one scheduling time unit or TTI of one beam in a TRP or cell. The disclosed solution can also be used to resolve: how to indicate information of multiple scheduling time units or TTIs of one beam in a TRP or cell.
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