Apparatus and methods for improving performance in multi-flow communication

• US 9,137,812 B2
• Filed: 06/07/2013
• Issued: 09/15/2015
• Est. Priority Date: 08/03/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Bharadwaj, Arjun, Sambhwani, Sharad Deepak
• Primary Examiner(s): MEW, KEVIN D
• Application Number:
  US13/912,413
• Publication Number:
  US 20140036799A1
• Time in Patent Office: 830 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 2001/0092 Error control systems characterised by the topology of the transmission link
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

A method that includes determining a multi-flow configuration for a multi-flow communication of a user equipment (UE), wherein the multi-flow configuration identifies whether a multi-frequency configuration is utilized and whether multiple-input multiple-output (MIMO) communication is configured for at least one cell in the multi-flow communication, determining one or more cell groups based on the multi-flow configuration, and determining at least one of a channel quality indicator (CQI) repetition rule or a hybrid automatic repeat request acknowledgment (HARQ-ACK) repetition rule for the multi-flow communication based on one or more of the multi-flow configuration or the one or more cell groups.

Claims

1. A method comprising:

determining a multi-flow configuration for a multi-flow communication of a user equipment (UE), wherein the multi-flow configuration identifies

whether a multi-frequency configuration is utilized, and

whether multiple-input multiple-output (MIMO) communication is configured for at least one cell in the multi-flow communication;

determining one or more cell groups based on the multi-flow configuration; and

determining at least one of a channel quality indicator (CQI) repetition rule or a hybrid automatic repeat request acknowledgment (HARQ-ACK) repetition rule for the multi-flow communication based on one or more of the multi-flow configuration or the one or more cell groups, wherein the CQI repetition rule allows an independent CQI repetition factor to be configured for each cell group that comprises a plurality of cells that share a Node B.

2. The method of claim 1, wherein each cell group of the one or more cell groups comprises one or more cells that share a Node B.

3. The method of claim 1, wherein the HARQ-ACK repetition rule allows for an independent HARQ-ACK repetition factor to be configured for each cell group that comprises a plurality of cells whose HARQ-ACKs are jointly scheduled.

4. The method of claim 1, wherein the CQI repetition rule allows for a single CQI repetition factor to be configured for all cells of the one or more cell groups, when the multi-flow configuration is a single-frequency dual-cell (SF-DC) configuration and MIMO communication is not configured.

5. The method of claim 1, wherein the CQI repetition rule allows for an independent CQI repetition factor to be configured for each cell of the one or more cell groups, when the multi-flow configuration is a single-frequency dual-cell (SF-DC) configuration and MIMO communication is configured.

6. The method of claim 1, wherein the CQI repetition rule allows for an independent CQI repetition factor to be configured for each cell group that comprises a plurality of cells that share a Node B, when the multi-flow configuration is a dual-frequency three-cell (DF-3C) configuration and MIMO communication is not configured.

7. The method of claim 1, wherein the CQI repetition rule allows for an independent CQI repetition factor for each cell group that comprises a plurality of cells who share a Node B, when the multi-flow configuration is a dual-frequency three-cell (DF-3C) configuration and MIMO communication is configured.

8. The method of claim 1, wherein the CQI repetition rule allows for an independent HARQ-ACK repetition factor for each cell group that comprises a plurality of cells whose HARQ-ACKs are jointly scheduled, when the multi-flow configuration is a dual-frequency three-cell (DF-3C) configuration and MIMO communication is configured.

9. The method of claim 1, wherein the CQI repetition rule allows for an independent CQI repetition factor for each cell of the one or more cell groups, when the multi-flow configuration is a dual-frequency four-cell (DF-4C) configuration.

10. The method of claim 1, wherein the CQI repetition rule allows for an independent HARQ-ACK repetition factor for each cell group that comprises a plurality of cells whose HARQ-ACKs are jointly scheduled, when the multi-flow configuration is a dual-frequency four-cell (DF-4C) configuration.

11. A non-transitory computer-readable medium storing executable code for wireless communication, comprising:

code for determining a multi-flow configuration for a multi-flow communication of a user equipment (UE), wherein the multi-flow configuration identifies

whether a multi-frequency configuration is utilized, and

whether multiple-input multiple-output (MIMO) communication is configured for at least one cell in the multi-flow communication;

code for determining one or more cell groups based on the multi-flow configuration; and

code for determining at least one of a channel quality indicator (CQI) repetition rule or a hybrid automatic repeat request acknowledgment (HARQ-ACK) repetition rule for the multi-flow communication based on one or more of the multi-flow configuration or the one or more cell groups, wherein the CQI repetition rule allows an independent CQI repetition factor to be configured for each cell group that comprises a plurality of cells that share a Node B.

12. An apparatus comprising:

means for determining a multi-flow configuration for a multi-flow communication of a user equipment (UE), wherein the multi-flow configuration identifies

whether a multi-frequency configuration is utilized, and

whether multiple-input multiple-output (MIMO) communication is configured for at least one cell in the multi-flow communication;

means for determining one or more cell groups based on the multi-flow configuration; and

means for determining at least one of a channel quality indicator (CQI) repetition rule or a hybrid automatic repeat request acknowledgment (HARQ-ACK) repetition rule for the multi-flow communication based on one or more of the multi-flow configuration or the one or more cell groups, wherein the CQI repetition rule allows an independent CQI repetition factor to be configured for each cell group that comprises a plurality of cells that share a Node B.

13. An apparatus comprising:

at least one processor; and

a memory coupled to the at least one processor;

wherein the at least one processor is configured to;

determine a multi-flow configuration for a multi-flow communication of a user equipment (UE), wherein the multi-flow configuration identifies

whether a multi-frequency configuration is utilized, and

whether multiple-input multiple-output (MIMO) communication is configured for at least one cell in the multi-flow communication;

determine one or more cell groups based on the multi-flow configuration; and

determine at least one of a channel quality indicator (CQI) repetition rule or a hybrid automatic repeat request acknowledgment (HARQ-ACK) repetition rule for the multi-flow communication based on one or more of the multi-flow configuration or the one or more cell groups, wherein the CQI repetition rule allows an independent CQI repetition factor to be configured for each cell group that comprises a plurality of cells that share a Node B.

14. The apparatus of claim 13, wherein. each cell group of the one or more cell groups comprises one or more cells that share a Node B.

15. The apparatus of claim 13, wherein the HARQ-ACK repetition rule allows for an independent HARQ-ACK repetition factor to be configured for each cell group that comprises a plurality of cells whose HARQ-ACKs are jointly scheduled.

16. The apparatus of claim 13, wherein the CQI repetition rule allows for a single CQI repetition factor to be configured for all cells of the one or more cell groups, when the multi-flow configuration is a single-frequency dual-cell (SF-DC) configuration and MIMO communication is not configured.

17. The apparatus of claim 13, wherein the CQI repetition rule allows for an independent CQI repetition factor to be configured for each cell of the one or more cell groups, when the multi-flow configuration is a single-frequency dual-cell (SF-DC) configuration and MIMO communication is configured.

18. The apparatus of claim 13, wherein the CQI repetition rule allows for an independent CQI repetition factor to be configured for each cell group that comprises a plurality of cells that share a Node B, when the multi-flow configuration is a dual-frequency three-cell (DF-3C) configuration and MIMO communication is not configured.

19. The apparatus of claim 13, wherein the CQI repetition rule allows for an independent CQI repetition factor for each cell group that comprises a plurality of cells who share a Node B, when the multi-flow configuration is a dual-frequency three-cell (DF-3C) configuration and MIMO communication is configured.

20. The apparatus of claim 13, wherein the CQI repetition rule allows for an independent HARQ-ACK repetition factor for each cell group that comprises a plurality of cells whose HARQ-ACKs are jointly scheduled, when the multi-flow configuration is a dual-frequency three-cell (DF-3C) configuration and MIMO communication is configured.

21. The apparatus of claim 13, wherein the CQI repetition rule allows for an independent CQI repetition factor for each cell of the one or more cell groups, when the multi-flow configuration is a dual-frequency four-cell (DF-4C) configuration.

22. The apparatus of claim 13, wherein the CQI repetition rule allows for an independent HARQ-ACK repetition factor for each cell group that comprises a plurality of cells whose HARQ-ACKs are jointly scheduled, when the multi-flow configuration is a dual-frequency four-cell (DF-4C) configuration.