Systems and methods for uplink control information reporting with license-assisted access (laa) uplink transmissions

Abstract

A user equipment (UE) for reporting uplink control information (UCI) when one or more Licensed-Assisted Access (LAA) serving cells are configured is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to determine if physical uplink shared channel (PUSCH) transmissions are scheduled on LAA serving cells and licensed cells. The instructions are also executable to determine a type of UCI to be reported. The instructions are further executable to determine a channel and cells to carry different UCI. The instructions are additionally executable to transmit the channel on the cells determined to carry UCI. The instructions are also executable to determine whether a LAA PUSCH is transmitted and UCI is multiplexed. The instructions are further executable to drop LAA PUSCH or transmit LAA PUSCH subject to listen-before-talk (LBT).

What is claimed is: 
     
         1 . A user equipment (UE) for reporting uplink control information (UCI) when one or more Licensed-Assisted Access (LAA) serving cells are configured, comprising:
 a processor; and   memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:
 determine if physical uplink shared channel (PUSCH) transmissions are scheduled on LAA serving cells and licensed cells; 
 determine a type of UCI to be reported; 
 determine a channel and cells to carry different UCI; 
 transmit the channel on the cells determined to carry UCI; 
 determine whether a LAA PUSCH is transmitted and UCI is multiplexed; and 
 drop LAA PUSCH or transmit LAA PUSCH subject to listen-before-talk (LBT). 
   
     
     
         2 . The UE of  claim 1 , wherein if PUSCH transmissions are scheduled on Licensed-Assisted Access (LAA) serving cells and licensed cells, and the LAA cell has the lowest cell ID among all cells with scheduled PUSCH, then the instructions are further executable to:
 determine a licensed cell with the lowest Cell ID among all licensed cells with scheduled PUSCH transmissions;   determine a type of UCI to be reported;   determine reporting the UCI on physical uplink control channel (PUCCH) or a selected licensed cell PUSCH follow existing rules;   transmit PUCCH and/or licensed PUSCH with UCI multiplexing as scheduled; and   transmit LAA PUSCH subject to LBT.   
     
     
         3 . The UE of  claim 1 , wherein if PUSCH transmissions are scheduled only on LAA serving cells, then the instructions are further executable to:
 determine that the UCI includes hybrid automatic repeat request acknowledgement (HARQ-ACK) and/or scheduling request (SR) and/or periodic channel state information (P-CSI) only;   determine a PUCCH resource and format for UCI reporting for PUCCH only reporting when there is no PUSCH transmission;   transmit a PUCCH carrying HARQ-ACK and/or SR and/or P-CSI;   determine if simultaneous PUCCH and PUSCH is configured; and   determine a LAA PUSCH transmission.   
     
     
         4 . The UE of  claim 3 , wherein if simultaneous PUCCH and PUSCH is not configured, then the instructions are further executable to:
 drop a LAA PUSCH.   
     
     
         5 . The UE of  claim 3 , wherein if simultaneous PUCCH and PUSCH is configured, then the instructions are further executable to:
 transmit a LAA PUSCH subject to LBT.   
     
     
         6 . The UE of  claim 1 , wherein if PUSCH transmissions are scheduled only on LAA serving cells, then the instructions are further executable to:
 determine that the UCI includes HARQ-ACK and/or SR and/or P-CSI and aperiodic CSI (A-CSI);   determine a PUCCH resource and format for UCI reporting for PUCCH only reporting for HARQ-ACK and/or SR and/or P-CSI when there is no PUSCH transmission;   transmit PUCCH carrying HARQ-ACK and/or SR and/or P-CSI;   determine if simultaneous PUCCH and PUSCH is configured; and   determine a LAA PUSCH transmission.   
     
     
         7 . The UE of  claim 6 , wherein if simultaneous PUCCH and PUSCH is not configured, then the instructions are further executable to:
 drop A-CSI and drop LAA PUSCH.   
     
     
         8 . The UE of  claim 6 , wherein if simultaneous PUCCH and PUSCH is not configured, then the instructions are further executable to:
 multiplex A-CSI on a LAA PUSCH; and   transmit a LAA PUSCH subject to LBT.   
     
     
         9 . The UE of  claim 6 , wherein if both P-CSI and A-CSI are scheduled, and simultaneous PUCCH and PUSCH is configured, both P-CSI and A-CSI are reported, wherein the instructions are further executable to:
 transmit a PUCCH carrying P-CSI;   multiplex A-CSI on LAA PUSCH; and   transmit the LAA PUSCH subject to LBT.   
     
     
         10 . The UE of  claim 1 , wherein if PUSCH transmissions are scheduled only on LAA serving cells, then the instructions are further executable to:
 determine the UCI includes A-CSI only;   multiplex A-CSI on LAA PUSCH; and   transmit LAA PUSCH subject to LBT.   
     
     
         11 . The UE of  claim 1 , wherein if UCI is multiplexed on LAA PUSCH, then the instructions are further executable to:
 determine a set of control transmission offsets for LAA that is different from normal UL transmissions by higher layer signaling;   determine a number of symbols for the UCI multiplexing on LAA PUSCH;   multiplex control symbols on LAA PUSCH using only available OFDM symbols; and   transmit the LAA PUSCH with UCI multiplexing subject to LBT.   
     
     
         12 . A method for reporting uplink control information (UCI) when one or more Licensed-Assisted Access (LAA) serving cells are configured, comprising:
 determining if physical uplink shared channel (PUSCH) transmissions are scheduled on LAA serving cells and licensed cells;   determining a type of UCI to be reported;   determining a channel and cells to carry different UCI;   transmitting the channel on the cells determined to carry UCI;   determining whether a LAA PUSCH is transmitted and UCI is multiplexed; and   dropping LAA PUSCH or transmitting LAA PUSCH subject to listen-before-talk (LBT).   
     
     
         13 . The method of  claim 12 , wherein if PUSCH transmissions are scheduled on Licensed-Assisted Access (LAA) serving cells and licensed cells, and the LAA cell has the lowest cell ID among all cells with scheduled PUSCH, then the method further comprises:
 determining a licensed cell with the lowest Cell ID among all licensed cells with scheduled PUSCH transmissions;   determining a type of UCI to be reported;   determining reporting the UCI on physical uplink control channel (PUCCH) or a selected licensed cell PUSCH follow existing rules;   transmitting PUCCH and/or licensed PUSCH with UCI multiplexing as scheduled; and   transmitting LAA PUSCH subject to LBT.   
     
     
         14 . The method of  claim 12 , wherein if PUSCH transmissions are scheduled only on LAA serving cells, then the method further comprises:
 determining that the UCI includes hybrid automatic repeat request acknowledgement (HARQ-ACK) and/or scheduling request (SR) and/or periodic channel state information (P-CSI) only;   determining a PUCCH resource and format for UCI reporting for PUCCH only reporting when there is no PUSCH transmission;   transmitting a PUCCH carrying HARQ-ACK and/or SR and/or P-CSI;   determining if simultaneous PUCCH and PUSCH is configured; and   determining a LAA PUSCH transmission.   
     
     
         15 . The method of  claim 14 , wherein if simultaneous PUCCH and PUSCH is not configured, then the method further comprises:
 dropping a LAA PUSCH.   
     
     
         16 . The method of  claim 14 , wherein if simultaneous PUCCH and PUSCH is configured, then the method further comprises:
 transmitting a LAA PUSCH subject to LBT.   
     
     
         17 . The method of  claim 12 , wherein if PUSCH transmissions are scheduled only on LAA serving cells, then the method further comprises:
 determining that the UCI includes HARQ-ACK and/or SR and/or P-CSI and aperiodic CSI (A-CSI);   determining a PUCCH resource and format for UCI reporting for PUCCH only reporting for HARQ-ACK and/or SR and/or P-CSI when there is no PUSCH transmission;   transmitting PUCCH carrying HARQ-ACK and/or SR and/or P-CSI;   determining if simultaneous PUCCH and PUSCH is configured; and   determining a LAA PUSCH transmission.   
     
     
         18 . The method of  claim 17 , wherein if simultaneous PUCCH and PUSCH is not configured, then the method further comprises:
 dropping A-CSI and dropping LAA PUSCH.   
     
     
         19 . The method of  claim 17 , wherein if simultaneous PUCCH and PUSCH is not configured, then the method further comprises:
 multiplexing A-CSI on a LAA PUSCH; and   transmitting a LAA PUSCH subject to LBT.   
     
     
         20 . The method of  claim 17 , wherein if both P-CSI and A-CSI are scheduled, and simultaneous PUCCH and PUSCH is configured, both P-CSI and A-CSI are reported, wherein the method further comprises:
 transmitting a PUCCH carrying P-CSI;   multiplexing A-CSI on LAA PUSCH; and   transmitting the LAA PUSCH subject to LBT.   
     
     
         21 . The method of  claim 12 , wherein if PUSCH transmissions are scheduled only on LAA serving cells, then the method further comprises:
 determining the UCI includes A-CSI only;   multiplexing A-CSI on LAA PUSCH; and   transmitting LAA PUSCH subject to LBT.   
     
     
         22 . The method of  claim 12 , wherein if UCI is multiplexed on LAA PUSCH, then the method further comprises:
 determining a set of control transmission offsets for LAA that is different from normal UL transmissions by higher layer signaling;   determining a number of symbols for the UCI multiplexing on LAA PUSCH;   multiplexing control symbols on LAA PUSCH using only available OFDM symbols; and   transmitting the LAA PUSCH with UCI multiplexing subject to LBT.