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US 11,121,845 B2Granted
Cyclic shift configuration for PUCCH with pi/2 BPSK modulation
AssigneeQUALCOMM Incorporated
InventorsWei Yang, Yi Huang
Life of this patent
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Abstract
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may cyclically shift, based at least in part on a cyclic shift index selected from a group of cyclic shift indexes, a demodulation reference signal (DMRS) sequence. The UE may transmit, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation. Numerous other aspects are provided.
Claims52
A method of wireless communication performed by a user equipment (UE), comprising:
- cyclically shifting, based at least in part on a cyclic shift index selected from a group of cyclic shift indexes, a demodulation reference signal (DMRS) sequence,
- wherein each cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes is at least 2 and is not 6, and
- wherein a first value of a first cyclic gap is different from a second value of a second cyclic gap;
- and
- transmitting, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
2 more elements
A method of wireless communication performed by a user equipment (UE), comprising:
- receiving an indication of a plurality of groups of cyclic shift indexes,
- wherein each group of cyclic shift indexes, of the plurality of groups of cyclic shift indexes, is associated with one or more demodulation reference signal (DMRS) sequences;
- cyclically shifting a DMRS sequence of the one or more DMRS sequences based at least in part on a cyclic shift index that is included in a group of cyclic shift indexes associated with the DMRS sequence,
- wherein a first value of a first cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence is different from a second value of a second cyclic gap between the cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence;
- and
- transmitting, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
3 more elements
A user equipment (UE) for wireless communication, comprising:
- a memory;
- and
- one or more processors coupled to the memory, the memory and the one or more processors configured to:
- cyclically shift, based at least in part on a cyclic shift index selected from a group of cyclic shift indexes, a demodulation reference signal (DMRS) sequence,
- wherein each cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes is at least 2 and is not 6, and
- wherein a first value of a first cyclic gap is different from a second value of a second cyclic gap;
- and
- transmit, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
5 more elements
A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:
- one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to:
- cyclically shift, based at least in part on a cyclic shift index selected from a group of cyclic shift indexes, a demodulation reference signal (DMRS) sequence,
- wherein each cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes is at least 2 and is not 6, and
- wherein a first value of a first cyclic gap is different from a second value of a second cyclic gap;
- and
- transmit, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
3 more elements
An apparatus for wireless communication, comprising:
- means for cyclically shifting, based at least in part on a cyclic shift index selected from a group of cyclic shift indexes, a demodulation reference signal (DMRS) sequence,
- wherein each cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes is at least 2 and is not 6, and
- wherein a first value of a first cyclic gap is different from a second value of a second cyclic gap;
- and
- means for transmitting, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
2 more elements
A user equipment (UE) for wireless communication, comprising:
- a memory;
- and
- one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:
- receive an indication of a plurality of groups of cyclic shift indexes,
- wherein each group of cyclic shift indexes, of the plurality of groups of cyclic shift indexes, is associated with one or more demodulation reference signal (DMRS) sequences;
- cyclically shift a DMRS sequence of the one or more DMRS sequences based at least in part on a cyclic shift index that is included in a group of cyclic shift indexes associated with the DMRS sequence,
- wherein a first value of a first cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence is different from a second value of a second cyclic gap between the cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence;
- and
- transmit, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
6 more elements
A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:
- one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to:
- receive an indication of a plurality of groups of cyclic shift indexes,
- wherein each group of cyclic shift indexes, of the plurality of groups of cyclic shift indexes, is associated with one or more demodulation reference signal (DMRS) sequences;
- cyclically shift a DMRS sequence of the one or more DMRS sequences based at least in part on a cyclic shift index that is included in a group of cyclic shift indexes associated with the DMRS sequence,
- wherein a first value of a first cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence is different from a second value of a second cyclic gap between the cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence;
- and
- transmit, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
4 more elements
An apparatus for wireless communication, comprising:
- means for receiving an indication of a plurality of groups of cyclic shift indexes,
- wherein each group of cyclic shift indexes, of the plurality of groups of cyclic shift indexes, is associated with one or more demodulation reference signal (DMRS) sequences;
- means for cyclically shifting a DMRS sequence of the one or more DMRS sequences based at least in part on a cyclic shift index that is included in a group of cyclic shift indexes associated with the DMRS sequence,
- wherein a first value of a first cyclic gap between cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence is different from a second value of a second cyclic gap between the cyclic shift indexes included in the group of cyclic shift indexes associated with the DMRS sequence;
- and
- means for transmitting, on a physical uplink control channel (PUCCH), a DMRS corresponding to the shifted DMRS sequence with pi/2 binary phase shift key (BPSK) modulation.
3 more elements
Dependencies are inferred from the claim text.