Resource assignments for uplink control channel

• US 9,860,881 B2
• Filed: 06/26/2015
• Issued: 01/02/2018
• Est. Priority Date: 10/11/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gaal, Peter, Chen, Wanshi, Luo, Xiliang, Montojo, Juan
• Primary Examiner(s): HOANG, THAI D
• Application Number:
  US14/752,780
• Publication Number:
  US 20150319751A1
• Time in Patent Office: 921 Days
• Field of Search: 370203, 370208-210, 375260
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/51 based on terminal or device properties

Abstract

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.

Claims

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.