Method and apparatus for multiplexing UCI
A base station (BS) and a method for configuring uplink control information (UCI) multiplexing performed by a BS are provided. The method includes: transmitting, to a user equipment (UE), a Radio Resource Control (RRC) configuration to configure a first sequence and a second sequence; transmitting, to the UE, a first downlink control information (DCI) format including a first indicator and a second DCI format including a second indicator; and receiving, from the UE, a UCI message which is multiplexed by the UE based on one of a first value corresponding to the first indicator and a second value corresponding to the second indicator. The first value corresponding to the first indicator is determined by the UE based on the first sequence. The second value corresponding to the second indicator is determined by the UE based on the second sequence.
1. A base station (BS), comprising:
at least one processor; and
at least one memory coupled to the at least one processor and storing one or more instructions that, when executed by the at least one processor, cause the BS to:
transmit, to a user equipment (UE), a Radio Resource Control (RRC) configuration to configure a first sequence associated with a first RRC parameter and a second sequence associated with a second RRC parameter, the first sequence having a first length and corresponding to a first plurality of beta offset indexes, and the second sequence having a second length and corresponding to a second plurality of beta offset indexes;
transmit, to the UE, a first downlink control information (DCI) format including a first indicator indicating one of the first plurality of beta offset indexes and a second DCI format including a second indicator indicating one of the second plurality of beta offset indexes; and
receive, from the UE, an uplink control information (UCI) message which is multiplexed by the UE based on one of a first value corresponding to the first indicator or a second value corresponding to the second indicator,
wherein:
the first value corresponding to the first indicator is determined by the UE based on the first sequence,
the second value corresponding to the second indicator is determined by the UE based on the second sequence,
the first length of the first sequence corresponding to the first indicator is different from the second length of the second sequence corresponding to the second indicator, and
a third length of the first indicator is different from a fourth length of the second indicator.
2. The BS of claim 1 , wherein:
the first DCI format is for scheduling an enhanced mobile broadband (eMBB) transmission corresponding to low priority, and
the second DCI format is for scheduling an ultra-reliable and low-latency communications (URLLC) transmission corresponding to high priority.
3. The BS of claim 1 , wherein the second DCI format has fewer bits than the first DCI format.
4. The BS of claim 1 , wherein the UCI message is multiplexed in a physical uplink shared channel (PUSCH) transmission scheduled by one of the first DCI format or the second DCI format.
5. The BS of claim 4 , wherein the first value corresponding to the first indicator or the second value corresponding to the second indicator determines a number of resources for multiplexing the UCI message in the PUSCH transmission.
6. A method for configuring uplink control information (UCI) multiplexing by a base station (BS), the method comprising:
transmitting, to a user equipment (UE), a Radio Resource Control (RRC) configuration to configure a first sequence associated with a first RRC parameter and a second sequence associated with a second RRC parameter, the first sequence having a first length and corresponding to a first plurality of beta offset indexes, and the second sequence having a second length and corresponding to a second plurality of beta offset indexes;
transmitting, to the UE, a first downlink control information (DCI) format including a first indicator indicating one of the first plurality of beta offset indexes and a second DCI format including a second indicator indicating one of the second plurality of beta offset indexes; and
receiving, from the UE, a UCI message which is multiplexed by the UE based on one of a first value corresponding to the first indicator or a second value corresponding to the second indicator,
wherein:
the first value corresponding to the first indicator is determined by the UE based on the first sequence,
the second value corresponding to the second indicator is determined by the UE based on the second sequence,
the first length of the first sequence corresponding to the first indicator is different from the second length of the second sequence corresponding to the second indicator, and
a third length of the first indicator is different from a fourth length of the second indicator.
7. The method of claim 6 , wherein the first DCI format is for scheduling an enhanced mobile broadband (eMBB) transmission corresponding to low priority and the second DCI format is for scheduling an ultra-reliable and low-latency communications (URLLC) transmission corresponding to high priority.
8. The method of claim 6 , wherein the second DCI format has fewer bits than the first DCI format.
9. The method of claim 6 , wherein the UCI message is multiplexed in a physical uplink shared channel (PUSCH) transmission scheduled by one of the first DCI format or the second DCI format.
10. The method of claim 9 , wherein the first value corresponding to the first indicator or the second value corresponding to the second indicator determines a number of resources for multiplexing the UCI message in the PUSCH transmission.