ENHANCED PUCCH REPORTING FOR CARRIER AGGREGATION

• US 20150200751A1
• Filed: 01/10/2014
• Published: 07/16/2015
• Est. Priority Date: 01/10/2014
• Status: Abandoned Application

• Current Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yin, Zhanping, Yamada, Shohei
• Application Number:
  US14/152,362
• Publication Number:
  US 20150200751A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

A User Equipment (UE) for performing carrier aggregation is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. Multiple serving cells are configured. The UE determines a first parameter that defines a maximum number of elements with downlink (DL) assignments for a subframe in the DL association set for a serving cell. The UE determines physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) information for the serving cell according to the first parameter. The UE sends the PDSCH HARQ-ACK information.

Claims

1. A user equipment (UE) for performing carrier aggregation, comprising:

a processor;

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to;

determine a first parameter that defines a maximum number of elements with downlink (DL) assignments for a subframe in the DL association set for a serving cell, wherein multiple serving cells are configured;

determine physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) information for the serving cell according to the first parameter; and

send the PDSCH HARQ-ACK information.

2. The UE of claim 1, wherein the instructions are further executable to receive the first parameter via higher layer signaling from an evolved Node B (eNB).

3. The UE of claim 1, wherein the first parameter is pre-defined as 4.

4. The UE of claim 3, wherein if the UE is configured with physical uplink control channel (PUCCH) format 1b with channel selection, the first parameter is assumed to be set.

5. The UE of claim 1, wherein determining the PDSCH HARQ-ACK information for the serving cell according to the first parameter comprises determining a number of HARQ-ACK bits for the serving cell according to the first parameter.

6. The UE of claim 1, wherein the instructions are further executable to:

configure the UE with physical uplink control channel (PUCCH) format 1b with channel selection; and

send the PDSCH HARQ-ACK information using PUCCH format 1b with channel selection, wherein the number of elements for the subframe of the DL association set in the serving cell equals

max(M_primary,min(M_secondary,M_config)), wherein M_primary is the number of elements for the subframe of the DL association set in a primary cell, M_secondary is the number of elements for the subframe of the DL association set in a secondary cell and M_config is the first parameter.

7. The UE of claim 6, wherein the primary cell is a time-division duplexing (TDD) cell with a DL-reference uplink/downlink (UL/DL) configuration belonging to a TDD UL/DL configuration in the set of {0, 1, 2, 3, 4, 6}, and wherein the secondary cell is a frequency-division duplexing (FDD) cell.

8. The UE of claim 6, wherein every serving cell is a time-division duplexing (TDD) cell, a DL-reference uplink/downlink (UL/DL) configuration of the primary cell belongs to a TDD UL/DL configuration in the set of {0,1,2,3,4,6}, and a DL-reference UL/DL configuration of the secondary cell belongs to a TDD UL/DL configuration 5.

9. The UE of claim 1, wherein the instructions are further executable to:

configure the UE with physical uplink control channel (PUCCH) format 3;

generate the PDSCH HARQ-ACK information for the serving cell based on the minimum number between the number of elements with DL assignments for the subframe in the DL association set for the serving cell and the first parameter; and

send the PDSCH HARQ-ACK information using PUCCH format 3.

10. The UE of claim 9, wherein a primary cell is a time-division duplexing (TDD) cell and a secondary cell is a frequency-division duplexing (FDD) cell.

11. The UE of claim 9, wherein every serving cell is a time-division duplexing (TDD) cell, and wherein a DL-reference uplink/downlink (UL/DL) configuration of a primary cell belongs to a TDD UL/DL configuration in the set of {0,1,2,3,4,6}.

12. An evolved Node B (eNB) for performing carrier aggregation, comprising:

a processor;

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to;

determine a first parameter that defines a maximum number of elements with downlink (DL) assignments for a subframe in the DL association set for a serving cell, wherein multiple serving cells are configured; and

receive physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) information for the serving cell, wherein the PDSCH HARQ-ACK information is determined according to the first parameter.

13. The eNB of claim 12, wherein the instructions are further executable to send the first parameter via higher layer signaling to a user equipment (UE).

14. The eNB of claim 12, wherein the first parameter is pre-defined as 4.

15. The eNB of claim 14, wherein if a user equipment (UE) is configured with physical uplink control channel (PUCCH) format 1b with channel selection, the first parameter is assumed to be set.

16. The eNB of claim 12, wherein determining the PDSCH HARQ-ACK information for the serving cell comprises determining a number of HARQ-ACK bits for the serving cell according to the first parameter.

17. The eNB of claim 12, wherein the instructions are further executable to:

configure a user equipment (UE) with physical uplink control channel (PUCCH) format 1b with channel selection; and

receive the PDSCH HARQ-ACK information using PUCCH format 1b with channel selection, wherein the number of elements for the subframe of the DL association set in the serving cell equals

max(M_primary,min(M_secondary,M_config)), wherein M_primary is the number of elements for the subframe of the DL association set in a primary cell, M_secondary is the number of elements for the subframe of the DL association set in a secondary cell and M_config is the first parameter.

18. The eNB of claim 17, wherein the primary cell is a time-division duplexing (TDD) cell with a DL-reference uplink/downlink (UL/DL) configuration belonging to a TDD UL/DL configuration in the set of {0,1,2,3,4,6}, and wherein the secondary cell is a frequency-division duplexing (FDD) cell.

19. The eNB of claim 17, wherein every serving cell is a time-division duplexing (TDD) cell, a DL-reference uplink/downlink (UL/DL) configuration of the primary cell belongs to a TDD UL/DL configuration in the set of {0,1,2,3,4,6}, and a DL-reference UL/DL configuration of the secondary cell belongs to a TDD UL/DL configuration 5.

20. The eNB of claim 12, wherein the instructions are further executable to:

configure a user equipment (UE) with physical uplink control channel (PUCCH) format 3; and

receive the PDSCH HARQ-ACK information using PUCCH format 3, wherein the PDSCH HARQ-ACK information is generated based on the minimum number between the number of elements with DL assignments for the subframe in the DL association set for the serving cell and the first parameter.

21. The eNB of claim 20, wherein a primary cell is a time-division duplexing (TDD) cell and a secondary cell is a frequency-division duplexing (FDD) cell.

22. The eNB of claim 20, wherein every serving cell is a time-division duplexing (TDD) cell, and wherein a DL-reference uplink/downlink (UL/DL) configuration of a primary cell belongs to a TDD UL/DL configuration in the set of {0,1,2,3,4,6}.

23. A method for performing carrier aggregation by a user equipment (UE), comprising:

determining a first parameter that defines a maximum number of elements with downlink (DL) assignments for a subframe in the DL association set for a serving cell, wherein multiple serving cells are configured;

determining physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) information for the serving cell according to the first parameter; and

sending the PDSCH HARQ-ACK information.

24. The method of claim 23, wherein determining the PDSCH HARQ-ACK information for the serving cell according to the first parameter comprises determining a number of HARQ-ACK bits for the serving cell according to the first parameter.

25. The method of claim 23, further comprising:

configuring the UE with physical uplink control channel (PUCCH) format 1b with channel selection; and

sending the PDSCH HARQ-ACK information using PUCCH format 1b with channel selection, wherein the number of elements for the subframe of the DL association set in the serving cell equals

max(M_primary,min(M_secondary,M_config)), wherein M_primary is the number of elements for the subframe of the DL association set in a primary cell, M_secondary is the number of elements for the subframe of the DL association set in a secondary cell and M_config is the first parameter.

26. The method of claim 23, further comprising:

configuring the UE with physical uplink control channel (PUCCH) format 3;

generating the PDSCH HARQ-ACK information for the serving cell based on the minimum number between the number of elements with DL assignments for the subframe in the DL association set for the serving cell and the first parameter; and

sending the PDSCH HARQ-ACK information using PUCCH format 3.

27. A method for performing carrier aggregation by an evolved Node B (eNB), comprising:

determining a first parameter that defines a maximum number of elements with downlink (DL) assignments for a subframe in the DL association set for a serving cell, wherein multiple serving cells are configured; and

receiving physical downlink shared channel (PDSCH) hybrid automatic repeat request acknowledgement/negative acknowledgement (HARQ-ACK) information for the serving cell, wherein the PDSCH HARQ-ACK information is determined according to the first parameter.

28. The method of claim 27, wherein determining the PDSCH HARQ-ACK information for the serving cell comprises determining a number of HARQ-ACK bits for the serving cell according to the first parameter.

29. The method of claim 27, further comprising:

configuring a user equipment (UE) with physical uplink control channel (PUCCH) format 1b with channel selection; and

receiving the PDSCH HARQ-ACK information using PUCCH format 1b with channel selection, wherein the number of elements for the subframe of the DL association set in the serving cell equals

max(M_primary,min(M_secondary,M_config)), wherein M_primary is the number of elements for the subframe of the DL association set in a primary cell, M_secondary is the number of elements for the subframe of the DL association set in a secondary cell and M config is the first parameter.

30. The method of claim 27, further comprising:

configuring a user equipment (UE) with physical uplink control channel (PUCCH) format 3; and

receiving the PDSCH HARQ-ACK information using PUCCH format 3, wherein the PDSCH HARQ-ACK information is generated based on the minimum number between the number of elements with DL assignments for the subframe in the DL association set for the serving cell and the first parameter.