Hybrid automatic repeat request-acknowledge (HARQ-ACK) codebook generation for inter-band time division duplex (TDD) carrier aggregation (CA)

• US 9,362,998 B2
• Filed: 07/29/2013
• Issued: 06/07/2016
• Est. Priority Date: 07/27/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: He, Hong, Fwu, Jong-Kae, Han, Seunghee, Chatterjee, Debdeep
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): NGUYEN, HIEN M
• Application Number:
  US14/129,128
• Publication Number:
  US 20150131494A1
• Time in Patent Office: 1,044 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/327 Received signal code power [RSCP]
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/046 taking physical layer constraints into account
• CPC Class Codes: H04B 7/0469 taking special antenna structures, e.g. cross polarized antennas into account
• CPC Class Codes: H04B 7/0478 Special codebook structures directed to feedback optimisation
• CPC Class Codes: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/08 : Access point devices

Abstract

Technology to determine a Hybrid Automatic Repeat reQuest-ACKnowledge (HARQ-ACK) codebook size for inter-band time division duplex (TDD) carrier aggregation (CA) is disclosed. In an example, a user equipment (UE) operable to determine a HARQ-ACK codebook size for inter-band TDD CA can include computer circuitry configured to: Determine a HARQ bundling window for inter-band TDD CA including a number of downlink (DL) subframes using HARQ-ACK feedback; divide the HARQ bundling window into a first part and a second part; and calculate the HARQ-ACK codebook size based on the first part and the second part. The first part can include DL subframes of configured serving cells that occur no later than the DL subframe where a downlink control information (DCI) transmission for uplink scheduling on a serving cell is conveyed, and the second part can include physical downlink shared channel (PDSCH) subframes occurring after the DCI transmission of the serving cells.

Claims

1. A user equipment (UE) operable to determine a Hybrid Automatic Repeat reQuest-ACKnowledge (HARQ-ACK) codebook size for inter-band time division duplex (TDD) carrier aggregation (CA), the UE comprising:

one or more processors;

a memory device including instructions that, when executed by the one or more processors, causes the UE to;

determine a HARQ bundling window for inter-band TDD CA including a number of downlink (DL) subframes using HARQ-ACK feedback;

divide the HARQ bundling window into a first part and a second part, wherein the first part of the HARQ bundling window includes DL subframes of configured serving cells that occur no later than the DL subframe where a downlink control information (DCI) transmission for uplink scheduling on a serving cell is conveyed, and the second part of the HARQ bundling window includes physical downlink shared channel (PDSCH) subframes occurring after the DCI transmission of the serving cells; and

calculate the HARQ-ACK codebook size based on the first part and the second part.

2. The UE of claim 1, wherein:

the HARQ-ACK codebook size on a physical uplink shared channel (PUSCH) is represented by O^ACK=Σ

_c=0<sup>NcellsDL−

1</sup>(B_c^DL×

C_c^DL), where N_cells^DL is the number of configured cells, B_c^DL is the number of downlink subframes for which the UE needs to feedback HARQ-ACK bits for the c-th serving cell, c is a non-negative integer, and C_c^DL=1 if a transmission mode configured in the c-th serving cell supports one transport block (TB) or spatial HARQ-ACK bundling is applied, otherwise C_c^DL=2.

3. The UE of claim 2, wherein:

4. The UE of claim 2, wherein:

5. The UE of claim 2, wherein:

B_c^DL=M_c when a serving cell carrying the uplink grant is uplink-downlink (UL-DL) configuration 0, a physical uplink control channel (PUCCH) format 3 is configured for a transmission of HARQ-ACK, and detection of a physical downlink control channel (PDCCH) with DCI format 0 or 4 corresponding to subframe ‘

n’

;

where M_c is a number of elements in the set k ε

K as defined in a Table 10.1.3.1-1 in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard Release 11 Technical Specification (TS) 36.213 associated with subframe ‘

n’

for HARQ-ACK feedback, and the set K does not include a special subframe of UL-DL configurations 0 and 5 with normal downlink cyclic prefixing (CP) and the set K does not include a special subframe of UL-DL configurations 0 and 4 with extended downlink CP;

otherwise

B_c^DL=M_c−

1 when a serving cell carrying the uplink grant is uplink-downlink (UL-DL) configuration 0, a physical uplink control channel (PUCCH) format 3 is configured for a transmission of HARQ-ACK, and detection of a physical downlink control channel (PDCCH) with DCI format 0 or 4 corresponding to subframe ‘

n’

;

where the set K does include a special subframe of UL-DL configurations 0 or 5 with normal downlink cyclic prefixing (CP) or the set K does include a special subframe of UL-DL configurations 0 or 4 with extended downlink CP.

6. The UE of claim 1, wherein the memory device includes instructions that, when executed by one or more processors, further causes the UE to:

receive an uplink grant in a DCI transmission including downlink assignment index (DAI) information in a value W_DAI^UL for the first part, wherein the DCI transmission is transmitted with an Long Term Evolution (LTE) DCI format 0 or a DCI format 4.

7. The UE of claim 1, wherein the memory device includes instructions that, when executed by the one or more processors, further causes the UE to:

transmit HARQ-ACK codebook through the physical uplink shared channel (PUSCH) scheduled by the DCI for uplink scheduling.

8. The UE of claim 1, wherein:

the HARQ bundling window with HARQ bundling window size M_c includes a set of DL subframes associated with one uplink (UL) subframe which carries the HARQ-ACK feedbacks as defined in a Table 10.1.3.1-1 in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard Release 11 Technical Specification (TS) 36.213.

9. The UE of claim 1, wherein a TDD configuration of a primary cell (PCell) in the inter-band TDD CA differs from a TDD configuration of a secondary cell (SCell) in the inter-band TDD CA.

10. The UE of claim 1, wherein the UE includes an antenna, a touch sensitive display screen, a speaker, a microphone, a graphics processor, an application processor, internal memory, or a non-volatile memory port.

11. A computer-implemented method for Hybrid Automatic Repeat reQuest-ACKnowledge (HARQ-ACK) codebook size generation for inter-band time division duplex (TDD) carrier aggregation (CA) at a user equipment (UE), the computer-implemented method comprising:

receiving, using one or more processors, configuration information including a physical downlink shared channel (PDSCH) bundling window for inter-band TDD CA including at least one downlink (DL) subframe using HARQ-ACK feedback;

dividing, using the one or more processors, the PDSCH bundling window into a first part and a second part, wherein the first part of the PDSCH bundling window includes DL subframes of all configured serving cells that occur no later than the DL subframe where a downlink control information (DCI) transmission for uplink scheduling on a serving cell is conveyed, and the second part of the PDSCH bundling windows includes physical downlink shared channel (PDSCH) subframes occurring after the DCI transmission of all the serving cells; and

generating, using the one or more processors, the HARQ-ACK codebook size based on the first part and the second part.

12. The method of claim 11, wherein:

the HARQ-ACK codebook size on a physical uplink shared channel (PUSCH) is represented by O^ACK=Σ

_c=0<sup>NcellsDL−

1</sup>(B_c^DL×

C_c^DL), where N_cells^DL is the number of configured cells, B_c^DL is the number of downlink subframes for which the UE needs to feedback HARQ-ACK bits for the c-th serving cell, c is a non-negative integer, and C_c^DL=1 if a transmission mode configured in the c-th serving cell supports one transport block (TB) or spatial HARQ-ACK bundling is applied, otherwise C_c^DL=2.

13. The method of claim 12, wherein:

14. The method of claim 12, wherein:

15. The method of claim 12, wherein:

B_c^DL=M_c when the DCI transmission does not include a W_DAI^UL value, where M_c=M_c^A+M_c^B is a number of elements in the set k ε

K as defined in a Table 10.1.3.1-1 in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard Release 11 Technical Specification (TS) 36.213 associated with subframe ‘

n’

for HARQ-ACK feedback, and the set K does not include a PDSCH, M_c^A is a number of DL subframes in a first part, and M_c^B is a number of DL subframes in a second part;

otherwise

B_c^DL=M_c−

1 when the DCI transmission does not include a W_DAI^UL value, and where the set K does include does include a PDSCH.

16. The method of claim 11, further comprising:

receiving an uplink grant in a DCI transmission including downlink assignment index (DAI) information in a value W_DAI^UL for the first part, wherein the DCI transmission is transmitted with a DCI format used for uplink grants.

17. The method of claim 11, further comprising:

transmitting HARQ-ACK feedback for PDSCH subframes of the HARQ bundling window with the calculated HARQ-ACK codebook size in uplink control information (UCI) on physical uplink shared channel (PUSCH).

18. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement the method of claim 11.

19. A user equipment (UE) configured to calculate a Hybrid Automatic Repeat reQuest-ACKnowledge (HARQ-ACK) codebook size for time division duplex (TDD) carrier aggregation (CA), the UE comprising:

one or more processors;

a memory device including instructions that, when executed by the one or more processors, causes the UE to;

determine a HARQ bundling window for inter-band TDD CA including a number of downlink (DL) subframes using HARQ-ACK feedback;

partition the HARQ bundling window into a first part and a second part, wherein the first part of the HARQ bundling window includes DL subframes of configured serving cells that occur no later than the DL subframe where a downlink control information (DCI) transmission for uplink scheduling on a serving cell is conveyed, and the second part of the HARQ bundling window includes physical downlink shared channel (PDSCH) subframes occurring after the DCI transmission of the serving cells; and

determine the HARQ-ACK codebook size based on the first part and the second part and a DCI format.

20. The UE of claim 19, wherein:

the HARQ-ACK codebook size on a physical uplink shared channel (PUSCH) is represented by O^ACK=Σ

_c=0<sup>NcellsDL−

1</sup>(B_c^DL×

C_c^DL), where N_cells^DL is the number of configured cells, B_c^DL is the number of downlink subframes for which the UE needs to feedback HARQ-ACK bits for the c-th serving cell, c is a non-negative integer, and C_c^DL=1 if a transmission mode configured in the c-th serving cell supports one transport block (TB) or spatial HARQ-ACK bundling is applied, otherwise C_c^DL=2.

21. The UE of claim 20, wherein:

22. The UE of claim 20, wherein:

B_c^DL=M_c when a serving cell carrying the uplink grant is uplink-downlink (UL-DL) configuration 0, a physical uplink control channel (PUCCH) format 3 is configured for a transmission of HARQ-ACK, and detection of a physical downlink control channel (PDCCH) with DCI format 0 or 4 corresponding to subframe ‘

n’

;

where M_c is a number of elements in the set k ε

K as defined in a Table 10.1.3.1-1 in a Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard Release 11 Technical Specification (TS) 36.213 associated with subframe ‘

n’

for HARQ-ACK feedback, and the set K does not include a special subframe of UL-DL configurations 0 and 5 with normal downlink cyclic prefixing (CP) and the set K does not include a special subframe of UL-DL configurations 0 and 4 with extended downlink CP;

otherwise

B_c^DL=M_c−

1 when a serving cell carrying the uplink grant is uplink-downlink (UL-DL) configuration 0, a physical uplink control channel (PUCCH) format 3 is configured for a transmission of HARQ-ACK, and detection of a physical downlink control channel (PDCCH) with DCI format 0 or 4 corresponding to subframe ‘

n’

;

where the set K does include a special subframe of UL-DL configurations 0 or 5 with normal downlink cyclic prefixing (CP) or the set K does include a special subframe of UL-DL configurations 0 or 4 with extended downlink CP.

23. The UE of claim 19, further comprising:

a transceiver to receive an uplink grant in a DCI transmission including downlink assignment index (DAI) information in a value W_DAI^UL for the first part, wherein the DCI transmission is transmitted with a DCI format used for uplink grants.

24. The UE of claim 19, further comprising:

a transceiver to transmit HARQ-ACK codebook through the physical uplink shared channel (PUSCH) scheduled by the DCI for uplink scheduling to a node, wherein the node is selected from the group consisting of a base station (BS), a Node B (NB), an evolved Node B (eNB), a baseband unit (BBU), a remote radio head (RRH), a remote radio equipment (RRE), a remote radio unit (RRU), and a central processing module (CPM).

25. A computer implemented method for Hybrid Automatic Repeat reQuest-ACKnowledge (HARQ-ACK) codebook size generation for inter-band time division duplex (TDD) carrier aggregation (CA) at a user equipment (UE), the computer-implemented method comprising:

receiving, using on or more processors, configuration information including a physical downlink shared channel (PDSCH) bundling window for inter-band TDD CA including at least one downlink (DL) subframe using HARQ-ACK feedback;

dividing, using one or more processors, the PDSCH bundling window into a first part and a second part; and

generating, using the one or more processors, the HARQ-ACK codebook size based on a size of the first part of the PDSCH bundling window and a size of the second part of the PDSCH bundling window.

26. The method of claim 25, wherein the first part includes DL subframes of all configured serving cells that occur no later than the DL subframe where a downlink control information (DCI) transmission for uplink scheduling on a serving cell is conveyed, and the second part includes physical downlink shared channel (PDSCH) subframes occurring after the DCI transmission of all the serving cells.