Slot structure of long physical uplink control channel (PUCCH) design for 5th generation (5G) new radio (NR)
A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to determine the uplink control channel (PUCCH) format and configuration based on a signaling from a base station (gNB). The instructions are also executable to determine the demodulation reference signal (DMRS) locations in the configured PUCCH. The instructions are further executable to determine the uplink control information (UCI) multiplexing methods on the configured PUCCH. The instructions are additionally executable to determine the resource of the control channel for UCI feedback. The instructions are also executable to transmit UCI feedback on the selected control channel.
1. A user equipment (UE), comprising:
a processor; and
memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:
transmit uplink control information (UCI) on a physical uplink control channel (PUCCH) resource using a PUCCH format that supports more than 2 bits of UCI payload, wherein
a position(s) in time domain of a demodulation reference signal (DMRS) for the PUCCH resource using the PUCCH format is determined based on a length of the PUCCH resource, a starting OFDM symbol of the PUCCH resource, a frequency hopping configuration for the PUCCH resource, and a parameter of the quantity of DMRS,
a PUCCH with only 1 DMRS does not support a frequency hopping and the PUCCH with 2 or more DMRS s supports a configurable frequency hopping,
in a case where frequency hopping is configured, the parameter, configured by higher layer signaling, of the quantity of DMRS is configurable as 1 or 2 DMRSs in a hop for PUCCH length 10 to 14 symbols using the PUCCH format that supports more than 2 bits of UCI payload, and the same number of DMRSs is applied in each hop, thus results in a total of 2 or 4 DMRSs in the PUCCH; and the same DMRS positions are determined as with frequency hopping.
2. A base station (gNB), comprising:
a processor; and
memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:
receive uplink control information (UCI) on a physical uplink control channel (PUCCH) resource using a PUCCH format that supports more than 2 bits of UCI payload, wherein
a position(s) in time domain of a demodulation reference signal (DMRS) for the PUCCH resource using the PUCCH format is determined based on a length of the PUCCH resource, a starting OFDM symbol of the PUCCH resource, a frequency hopping configuration for the PUCCH resource, and a parameter of the quantity of DMRS,
a PUCCH with only 1 DMRS does not support a frequency hopping and the PUCCH with 2 or more DMRSs supports a configurable frequency hopping,
in a case where frequency hopping is configured, the parameter, configured by higher layer signaling, of the quantity of DMRS is configurable as 1 or 2 DMRSs in a hop for PUCCH length 10 to 14 symbols using the PUCCH format that supports more than 2 bits of UCI payload, and the same number of DMRSs is applied in each hop, thus results in a total of 2 or 4 DMRSs in the PUCCH; and the same DMRS positions are determined as with frequency hopping.
3. A method by a user equipment (UE), the method comprising:
transmitting uplink control information (UCI) on a physical uplink control channel (PUCCH) resource using a PUCCH format that supports more than 2 bits of UCI payload, wherein
a position(s) in time domain of a demodulation reference signal (DMRS) for the PUCCH resource using the PUCCH format is determined based on a length of the PUCCH resource, a starting OFDM symbol of the PUCCH resource, a frequency hopping configuration for the PUCCH resource, and a parameter of the quantity of DMRS,
a PUCCH with only 1 DMRS does not support a frequency hopping and the PUCCH with 2 or more DMRSs supports a configurable frequency hopping,
in a case where frequency hopping is configured, the parameter, configured by higher layer signaling, of the quantity of DMRS is configurable as 1 or 2 DMRSs in a hop for PUCCH length 10 to 14 symbols using the PUCCH format that supports more than 2 bits of UCI payload, and the same number of DMRSs is applied in each hop, thus results in a total of 2 or 4 DMRSs in the PUCCH; and the same DMRS positions are determined as with frequency hopping.
4. A method by a base station apparatus, the method comprising:
receiving uplink control information (UCI) on a physical uplink control channel (PUCCH) resource using a PUCCH format that supports more than 2 bits of UCI payload, wherein
a position(s) in time domain of a demodulation reference signal (DMRS) for the PUCCH resource using the PUCCH format is determined based on a length of the PUCCH resource, a starting OFDM symbol of the PUCCH resource, a frequency hopping configuration for the PUCCH resource, and a parameter of the quantity of DMRS,
a PUCCH with only 1 DMRS does not support a frequency hopping and the PUCCH with 2 or more DMRSs supports a configurable frequency hopping,
in a case where frequency hopping is configured, the parameter, configured by higher layer signaling, of the quantity of DMRS is configurable as 1 or 2 DMRSs in a hop for PUCCH length 10 to 14 symbols using the PUCCH format that supports more than 2 bits of UCI payload, and the same number of DMRSs is applied in each hop, thus results in a total of 2 or 4 DMRSs in the PUCCH; and the same DMRS positions are determined as with frequency hopping.