Resource assignments for uplink control channel
A wireless communication method includes allocating physical uplink control channel (PUCCH) data in first slot to a first orthogonal cover code (OCC). The method also includes allocating PUCCH data in a second slot of the same subframe to a different orthogonal cover code (OCC). Another method includes mapping PUCCH resources to physical resource blocks based on a user equipment (UE) specific signaling parameter (e.g., a resource index) and a number of symbols in a slot of a subframe.
1. A method of wireless communication, comprising:
determining, at a base station, a user equipment (UE) specific signaling parameter; and
transmitting, from the base station to a first UE, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
2. The method of claim 1 , in which the resource index is selected such that a metric of estimated interference between the first UE and a second UE at a first slot of a subframe is different from the metric of estimated interference between the first UE and the second UE at a second slot of the subframe.
3. The method of claim 2 , in which the metric of estimated interference is expected average cross-correlation in time varying radio channels between two orthogonal cover codes (OCCs) assigned to the first UE and the second UE.
4. The method of claim 2 , in which the PUCCH format 3 resources are further mapped to PRBs based on a number of subcarriers used for mapping a first PUCCH format 3 resource of the plurality of PUCCH format 3 resources.
5. A method of wireless communication, comprising:
determining, at a user equipment (UE), a UE specific signaling parameter; and
receiving, at the UE from a base station, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
6. A base station for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory, the at least one processor being configured:
to determine a user equipment (UE) specific signaling parameter; and
to transmit, from the base station to a first UE, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs to be used for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
7. The base station of claim 6 , in which the resource index is selected such that a metric of estimated interference between the first UE and a second UE at a first slot of a subframe is different from the metric of estimated interference between the first UE and the second UE at a second slot of the subframe.
8. The base station of claim 7 , in which the metric of estimated interference is expected average cross-correlation in time varying radio channels between two orthogonal cover codes (OCCs) assigned to the first UE and the second UE.
9. The base station of claim 7 , in which the PUCCH format 3 resources are further mapped to PRBs based on a number of subcarriers used for mapping a first PUCCH format 3 resource of the plurality of PUCCH format 3 resources.
10. A user equipment (UE) for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory, the at least one processor being configured:
to determine a UE specific signaling parameter; and
to receive, from a base station, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs to be used for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
11. An apparatus for wireless communication, comprising:
means for determining, at a base station, a user equipment (UE) specific signaling parameter; and
means for transmitting, from the base station to the UE, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs to be used for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
12. An apparatus for wireless communication, comprising:
means for determining, at a user equipment (UE), a UE specific signaling parameter; and
means for receiving, at the UE from a base station, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs to be used for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
13. A non-transitory computer-readable medium having program code recorded thereon, when executed by a processor, the program code performing:
determining, at a base station, a user equipment (UE) specific signaling parameter; and
transmitting, from the base station to a first UE, in accordance with a plurality of physical uplink control channel (PUCCH), the PRBs to be used for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.
14. A non-transitory computer-readable medium having program code recorded thereon, when executed by a processor, the program code performing:
determining, at a user equipment (UE), a UE specific signaling parameter; and
receiving, at the UE from a base station, in accordance with a plurality of physical uplink control channel (PUCCH) format 3 resources mapped to physical resource blocks (PRBs), the PRBs to be used for transmission of the PUCCH format 3 resources determined based on a quotient determined from a resource index for transmission of the PUCCH format 3 resources based on an identified antenna port and a spreading factor dependent denominator.