Selection of acknowledgment timing in wireless communications

• US 10,164,672 B2
• Filed: 12/03/2013
• Issued: 12/25/2018
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: He, Hong, Han, Seunghee, Fwu, Jong-Kae, Chatterjee, Debdeep, Huang, Rui
• Primary Examiner(s): Sefcheck, Gregory B
• Assistant Examiner(s): Esmaeilian, Majid
• Application Number:
  US14/440,860
• Publication Number:
  US 20150304087A1
• Time in Patent Office: 1,848 Days
• Field of Search: 370280
• CPC Class Codes: H04B 1/12 Neutralising, balancing, or compensation arrangements
• CPC Class Codes: H04B 1/3827 Portable transceivers
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04B 17/26 using historical data, averaging values or statistics
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/03305 Joint sequence estimation and interference removal joint detection of several desired signals H04L25/03331
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• 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: H04L 5/0057 : Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0058 : Allocation criteria
• CPC Class Codes: H04L 5/0092 : Indication of how the channel is divided
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/10 : Reselecting an access point controller
• CPC Class Codes: H04W 40/16 : based on interference
• CPC Class Codes: H04W 52/0261 : managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/40 : during macro-diversity or soft handoff
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/121 : for groups of terminals or users
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/52 : based on load
• CPC Class Codes: H04W 72/54 : based on quality criteria
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/566 : of the information or information source or recipient
• CPC Class Codes: H04W 72/569 : of the traffic information
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/18 : Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 92/18 : between terminal devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Disclosed is a User Equipment device configured to select a suitable acknowledgement timing configuration in a time division duplex-frequency division duplex (TDD-FDD) carrier aggregation (CA) enabled wireless network, comprising establishing, by a user equipment (UE), a connection to a primary serving cell (PCell) and a secondary serving cell (SCell) of a base station, the PCell having a first TDD or first FDD configuration, the SCell having a second FDD or second TDD configuration, receiving, by the UE, downlink data through the PCell and SCell, categorizing a type of downlink data subframe in use by the SCell, selecting, by the UE, a hybrid automatic repeat request (HARQ) timing configuration based on the type of downlink data subframe for use by the SCell, and transmitting acknowledgement information associated with the downlink data according to the selected hybrid automatic repeat request (HARQ) timing configuration on PCell. Other embodiments may be described and claimed.

Claims

1. A user equipment (UE) comprising processing circuitry configured to:

establish a connection to a primary serving cell (PCell) and a secondary serving cell (SCell) of an enhanced-Node B (eNB) configured for Time Division Duplex (TDD)-Frequency Division Duplex (FDD) carrier aggregation (CA), the PCell having a first TDD or first FDD configuration, the SCell having a second FDD or second TDD configuration such that only one of the PCell and the SCell have a TDD configuration and only one of the PCell and the SCell have a FDD configuration, such that the PCell and the SCell include both of the TDD configuration and the FDD configuration;

receive downlink data through the PCell and SCell;

categorize a type of downlink data subframe in use by the SCell;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use with downlink data received from the SCell based on the type of downlink data subframe received;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use on the PCell based on a PCell TDD uplink-downlink timing sequence configuration indicated in a received first system information block (SIB1) when the PCell is TDD configured;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use on the PCell based on a FDD HARQ timing sequence configuration when the PCell is FDD configured; and

transmit acknowledgement information associated with the downlink data according to the selected hybrid automatic repeat request (HARQ) timing sequence configuration on the PCell, wherein the HARQ timing sequence configuration for use on the SCell for DL subframe n-k, where k>

=4, is transmitted in a first available uplink data subframe n on the PCell, wherein appropriate values for k are determined irrespective of a type of downlink data subframe in use on the SCell.

2. The UE of claim 1, wherein the processing circuitry is further configured to select a hybrid automatic repeat request (HARQ) timing sequence configuration for use by the PCell based on the type of downlink data subframe.

3. The UE of claim 1, wherein a type of downlink data subframe in use by the SCell is a first type downlink data subframe or a second type downlink data subframe;

wherein the first type downlink data subframe comprises a subframe that is a downlink data subframe on both the PCell and the SCell, or that is a downlink data subframe on both a scheduling cell and a scheduled cell in a case of a cross-carrier scheduling configuration, and wherein more than one TDD serving cell is configured and the configured scheduling cell is not the PCell; and

/or

wherein the second type of downlink data subframe comprises a subframe that is downlink only on the SCell.

4. The UE of claim 3, wherein if the UE is configured for use with more than one serving cell and if at least one of the more than one serving cell is deployed with a TDD uplink-downlink (UL-DL) configuration, and other ones of the more than one serving cell are deployed with a different full-downlink (full-DL) TDD configuration or FDD configuration, and wherein if a serving cell deployed with a TDD UL/DL configuration is set as the PCell, then the processing circuitry is further configured to select the HARQ timing sequence configuration for use with the PCell and SCell, respectively, are defined as follows:

wherein, for a downlink channel on the SCell deployed with FDD or full-DL TDD configuration, if a downlink channel transmission is indicated by the detection of a corresponding downlink control channel or if a downlink control channel indicates a downlink Semi-Persistence Scheduling (SPS) release within subframe n-k, where k∈

K and K, wherein K is a set of M elements {k₀, k₁, . . . k_(M-1)}, depending on the subframe n, the processing circuitry is further configured to select the HARQ timing sequence configuration for use on the PCell as follows;

a) if the downlink data subframe is a first type of downlink data subframe, then the HARQ timing sequence configuration selected follows a PCell SIB1 TDD timing sequence configuration regardless of cross-carrier scheduling or self-scheduling configuration, or alternatively follow a DL-reference UL/DL timing sequence configuration, wherein the DL-reference UL/DL configuration is jointly determined by a scheduling cell SIB1 TDD configuration and a PCell SIB1 timing sequence configuration in case of cross-carrier scheduling;

b) if the downlink data subframe is a second type of downlink data subframe, the HARQ timing sequence configuration selected for use is defined by the following different alternatives;

i) the selected HARQ timing sequence configuration for DL data transmission in subframe n-k, where k>

=4, comprises transmitting a HARQ in a first available UL subframe n on PCell;

ii) the HARQ timing sequence configuration selected for DL data transmission in subframe n-k, where k>

=4, comprises transmitting a HARQ in an available UL subframe n on PCell in a distributed fashion across available UL subframes.

5. The UE of claim 1, wherein, for a downlink channel on the SCell, if the SCell is deployed with FDD or full-DL TDD configuration, a downlink channel transmission is indicated by the detection of a corresponding downlink control channel or if a downlink control channel indicates a downlink SPS release within subframe n-k, where k∈

K and K is a set of M elements {k₀, k₁, . . . k_(M-1)} depending on the subframe n.

6. The UE of of claim 1, wherein, for a downlink channel on the SCell, the HARQ timing sequence configuration used follows one DL-reference UL/DL configuration depending on a DL-to-UL switch-point periodicity of a UL/DL configuration in use on the PCell.

7. The UE of claim 6, wherein one DL-reference UL/DL configuration is TDD UL/DL configuration 2 if DL-to-UL switch point periodicity of a UL/DL configuration on PCell is 5 milliseconds (ms) or 10 ms.

8. The UE of claim 1, wherein the processing circuitry is configured to transmit acknowledgement information associated with the downlink data according to the selected hybrid automatic repeat request (HARQ) timing sequence configuration and comprises being configured to transmit acknowledgement information on a physical uplink shared channel (PUSCH) on the PCell.

9. The UE of claim 1, wherein the processing circuitry is configured to transmit acknowledgement information comprising transmitting for a PCell PDSCH or a SCell PDSCH on a UL subframe of a PUSCH or physical uplink control channel (PUCCH) on PCell.

10. The UE of claim 1, wherein the HARQ timing sequence configuration for use on the SCell for DL subframe n-k, where k>

=4, is transmitted in a first available uplink data subframe n on the PCell, where in appropriate values for k are determined irrespective of a type of downlink data subframe in use on the SCell.

11. User Equipment (UE) comprising processing circuitry configured to:

receive a downlink data subframe from a PCell and a SCell, wherein the PCell and the SCell are set up between the UE and an enhanced-Node B (eNB) in a time division duplex frequency division duplex (TDD-FDD) carrier aggregation (CA) formation, such that only one of the PCell and the SCell have a TDD configuration and only one of the PCell and the SCell have a FDD configuration, such that the PCell and the SCell include both of the TDD configuration and the FDD configuration;

determine a type of downlink data subframe received from the SCell;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use by the UE for data received from the SCell based on the type of downlink data subframe, wherein the HARQ timing sequence configuration for use on the SCell for DL subframe n-k, where k>

=4, is transmitted in a first available uplink data subframe n on the PCell, wherein appropriate values for k are determined irrespective of a type of downlink data subframe in use on the SCell;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use on the PCell based on a PCell TDD uplink-downlink timing sequence configuration indicated in a received first system information block (SIB1) when the PCell is TDD configured; and

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use on the PCell based on a FDD HARQ timing sequence configuration when the PCell is FDD configured.

12. The UE of claim 11, wherein the processing circuitry is further configured to transmit an acknowledgement using the selected HARQ timing sequence configuration.

13. The UE of claim 11, wherein the processing circuitry is further configured to detect a downlink control channel transmission, and wherein, for a downlink channel on the SCell deployed with FDD or full-DL TDD configuration, if a downlink channel transmission is indicated by a detection of a corresponding downlink control channel or if a downlink control channel indicates a downlink Semi-Persistence Scheduling (SPS) release within subframe n-k, where k∈

K and K, wherein K is a set of M elements {k₀, k₁, . . . k_(M-1)}, and depending on the subframe n, the UE is further configured to select a HARQ timing sequence configuration for use on the PCell indicated by a PCell SIB1 TDD timing sequence configuration.

14. A method for selecting a suitable acknowledgement timing configuration in a time division duplex frequency division duplex (TDD-FDD) carrier aggregation (CA) enabled wireless communication network, comprising:

associating, by a user equipment (UE), with a primary serving cell (PCell) and a secondary serving cell (SCell) of an enhanced-Node B (eNB), the PCell having a first TDD or first FDD configuration, the SCell having a second FDD or second TDD configuration, such that only one of the PCell and the SCell have a TDD configuration and only one of the PCell and the SCell have a FDD configuration, such that the PCell and the SCell include both of the TDD configuration and the FDD configuration;

receiving, by the UE, downlink data through the PCell and SCell;

categorizing a type of downlink data subframe in use by the SCell;

selecting, by the UE, a hybrid automatic repeat request (HARQ) timing sequence configuration for use by the SCell based on the type of downlink data subframe;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use on the PCell based on a PCell TDD uplink-downlink timing sequence configuration indicated in a received first system information block (SIB1) when the PCell is TDD configured;

select a hybrid automatic repeat request (HARQ) timing sequence configuration for use on the PCell based on a FDD HARQ timing sequence configuration when the PCell is FDD configured; and

transmitting acknowledgement information associated with the downlink data according to the selected hybrid automatic repeat request (HARQ) timing sequence configuration on the PCell, wherein the HARQ timing sequence configuration for use on the SCell for DL subframe n-k, where k>

=4, is transmitted in a first available uplink data subframe n on the PCell, wherein appropriate values for k are determined irrespective of a type of downlink data subframe in use on the SCell.

15. The method of claim 14, wherein the hybrid automatic repeat request (HARQ) timing sequence configuration is selected for the PCell as follows:

a PCell TDD uplink-downlink timing sequence configuration indicated in a first system information block (SIB1) configuration when PCell is TDD;

or

a FDD HARQ timing sequence configuration when PCell is FDD.

16. The method of claim 14, wherein a type of downlink data subframe in use by the SCell is a first type downlink data subframe or a second type downlink data subframe;

wherein the first type downlink data subframe comprises a subframe that is a downlink data subframe on both the PCell and the SCell, or that is a downlink data subframe on both a scheduling cell and a scheduled cell in a case of a cross-carrier scheduling configuration, and wherein more than one TDD serving cell is configured and the configured scheduling cell is not the PCell; and

/or

wherein the second type of downlink data subframe comprises a subframe that is downlink only on the SCell;

wherein if a UE is configured for use with more than one serving cell and if at least one of the more than one serving cell is deployed with a TDD uplink-downlink (UL-DL) configuration, and other ones of the more than one serving cell are deployed with a different full-downlink (full-DL) TDD configuration or FDD configuration, and wherein if a serving cell deployed with a TDD UL/DL configuration is set as the PCell, then the HARQ timing sequence configurations set for use with the PCell and SCell, respectively, are defined as follows;

wherein, for a downlink channel on the SCell deployed with FDD or full-DL TDD configuration, if a downlink channel transmission is indicated by the detection of a corresponding downlink control channel or if a downlink control channel indicates a downlink Semi-Persistence Scheduling (SPS) release within subframe n-k, where k∈

K and K, wherein K is a set of M elements {k₀, k₁, . . . k_(M-1)}, depending on the subframe n, wherein a UL/DL timing sequence configuration for use on the PCell is defined as follows;

c) if the downlink data subframe is a first type of downlink data subframe, then the HARQ timing sequence configuration used should follow a PCell SIB1 TDD timing sequence configuration regardless of cross-carrier scheduling or self-scheduling configuration, or alternatively follow a DL-reference UL/DL timing sequence configuration, wherein the DL-reference UL/DL configuration is jointly determined by a scheduling cell SIB1 TDD configuration and a PCell SIB1 timing sequence configuration in case of cross-carrier scheduling;

d) if the downlink data subframe is a second type of downlink data subframe, the HARQ timing sequence configuration for use is defined by the following different alternatives;

i) the HARQ timing sequence configuration for DL data transmission in subframe n-k, where k>

=4, comprises transmitting a HARQ in a first available UL subframe n on PCell;

ii) the HARQ timing sequence configuration for DL data transmission in subframe n-k, where k>

=4, comprises transmitting a HARQ in an available UL subframe n on PCell in a distributed fashion across available UL subframes.

17. The method of claim 14, wherein, for a downlink channel on the SCell, if the SCell is deployed with FDD or full-DL TDD configuration, a downlink channel transmission is indicated by the detection of a corresponding downlink control channel or if a downlink control channel indicates a downlink SPS release within subframe n-k, where k∈

K and K is a set of M elements {k₀, k₁, . . . k_(M-1)} depending on the subframe n;

or

wherein, for a downlink channel on the SCell, the HARQ timing sequence configuration used follows one DL-reference UL/DL configuration depending on the DL-to-UL switch-point periodicity of a UL/DL configuration in use on the PCell.

18. The method of claim 14, including a non-transitory machine readable medium comprising a plurality of instructions that, in response to being executed on a computing device, cause the computing device to carry out the method according claim 14.