HARQ Feedback Using Carrier Aggregation

Patent metadata

Field	Value
Publication number	US-2016205690-A1
Application number	US-201615079762-A
Country	US
Kind code	A1
Filing date	Mar 24, 2016
Priority date	Sep 27, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

Embodiments provide methods and devices for data transmission and assignment of uplink control channel resources in an uplink FDD carrier, for enabling a recipient to provide HARQ feedback for data transmitted in the downlink using carrier aggregation of a downlink FDD carrier and at least one TDD carrier. A method includes associating each downlink subframe in the downlink FDD carrier with an uplink control channel subframe in the uplink FDD carrier, associating each downlink subframe and special subframe in the TDD carrier with an uplink control channel subframe in the uplink FDD carrier, assigning uplink control channel resources in the uplink FDD carrier to the recipient, according to the made associations, and transmitting data on said downlink FDD carrier and/or TDD carrier, to be received by the recipient.

First claim

What is claimed is:

1 . A method, comprising:
associating, in a radio network node, each downlink subframe in a downlink Frequency-Division Duplexing (FDD) carrier with an uplink control channel subframe in an uplink FDD carrier; associating each downlink subframe and special subframe in a Time-Division Duplexing (TDD) carrier with an uplink control channel subframe in the uplink FDD carrier; assigning uplink control channel resources in the uplink control channel subframe in the uplink FDD carrier to a recipient, according to the associations; and transmitting data on one or more of the downlink FDD carrier and the TDD carrier, to be received by the recipient.

2 . The method according to claim 1 , wherein each downlink subframe and special subframe in the TDD carrier is associated with an uplink control channel subframe in the uplink FDD carrier in a one-to-one manner.

3 . The method according to claim 1 , wherein each downlink subframe and special subframe in the TDD carrier is associated with an uplink control channel subframe in the uplink FDD carrier in a many-to-one manner.

4 . The method according to claim 1 , wherein the association of each downlink subframe in the downlink FDD carrier and the association of each downlink subframe and special subframe in the TDD carrier with an uplink control channel subframe in the uplink FDD carrier generates an uplink control channel subframe in the uplink FDD carrier comprising only hybrid automatic repeat request (HARQ) feedback related to the downlink FDD carrier.

5 . The method according to claim 1 , where hybrid automatic repeat request (HARQ) feedback for a downlink sub-frame n is transmitted on the uplink control channel subframe in the uplink FDD carrier number n+an offset value k.

6 . The method according to claim 5 , wherein the offset value k for providing HARQ feedback on the uplink control channel subframe in the uplink FDD carrier is determined from a higher layer configured entity or by a downlink control channel.

7 . The method according to claim 1 , further comprising receiving hybrid automatic repeat request (HARQ) feedback from the recipient, related to the transmitted data, on the uplink control channel resources in the uplink control channel subframe in the uplink FDD carrier assigned to the recipient.

8 . The method according to claim 7 , wherein the HARQ feedback is received on a scheduling request resource.

9 . The method according to claim 8 , wherein spatial bundling is performed in uplink control channel subframes which are assigned for HARQ feedback of both the downlink FDD carrier and TDD carrier; and spatial bundling is not performed in uplink control channel subframes which are assigned for HARQ feedback of the downlink FDD carrier.

10 . The method according to claim 1 , wherein a type of uplink control channel subframe in the uplink FDD carrier and the subframe in the TDD carrier associated with an uplink control channel subframe in the uplink FDD carrier is determined from a higher layer configured entity or by a downlink control channel.

11 . The method according to claim 1 , wherein any hybrid automatic repeat request (HARQ) feedback on the uplink control channel subframe in the uplink FDD carrier does not relate to any spatial subframe bundling for a TDD carrier.

12 . A radio network node, comprising:
a processor; a computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
associating each downlink subframe in a downlink Frequency-Division Duplexing (FDD) carrier with an uplink control channel subframe in a uplink FDD carrier; and
associating each downlink subframe and special subframe in a Time-Division Duplexing (TDD) carrier with an uplink control channel subframe in the uplink FDD carrier; and
assigning uplink control channel resources in the uplink control channel subframe in the uplink FDD carrier to a recipient according to the associations; and
a transmitter, configured for transmitting, to the recipient, data on one or more of the downlink FDD carrier and the TDD carrier.

13 . The radio network node according to claim 12 , wherein the program further includes instructions for associating each downlink subframe and special subframe in the TDD carrier with an uplink control channel subframe in the uplink FDD carrier in a one-to-one manner.

14 . The radio network node according to claim 12 , wherein the program further includes associating each downlink subframe and special subframe in the TDD carrier with an uplink control channel subframe in the uplink FDD carrier in a many-to-one manner.

15 . The radio network node according to claim 12 , further comprising:
a receiver, configured for receiving hybrid automatic repeat request (HARQ) feedback from the recipient, related to the transmitted data, on the uplink control channel resource in the uplink control channel subframe in the uplink FDD carrier assigned to the recipient.

16 . A method, comprising:
receiving, by a recipient, data on one or more of: subframes on a downlink data channel of a downlink Frequency-Division Duplexing (FDD) carrier and a downlink subframe on a downlink data channel of a Time-Division Duplexing (TDD) carrier; determining whether the data has been correctly received; selecting a sequence and a modulation symbol, or selecting a modulation symbol, to form a hybrid automatic repeat request (HARQ) message in an uplink control channel subframe of an uplink FDD carrier, corresponding to one of:
a Discontinuous Transmission (DTX) for data not having been received, and
a DTX for data not having been received with one of: an acknowledgement (ACK) for data determined to have been correctly received, and a non-acknowledgement (NACK) for data determined to not having been correctly received; and
transmitting HARQ feedback related to the received data on an uplink control channel resource in the uplink control channel subframe of an uplink FDD carrier assigned to the recipient, the HARQ feedback comprising the selected sequence and modulation symbol or the selected modulation symbol.

17 . The method according to claim 16 , further comprising transmitting HARQ feedback from the recipient, related to the transmitted data, on the uplink control channel resource in the uplink control channel subframe of the uplink FDD carrier assigned to the recipient.

18 . The method according to claim 17 , wherein the HARQ feedback is transmitted on a scheduling request resource.

19 . The method according to claim 18 , wherein spatial bundling is performed in uplink control channel subframes which are assigned for HARQ feedback of both the downlink FDD carrier and TDD carrier; and spatial bundling is not performed in uplink control channel subframes which are assigned for HARQ feedback of the downlink FDD carrier.

20 . A device, comprising:
a receiver, configured to receive data on one or more of: downlink subframes on a downlink data channel of a Frequency-Division Duplexing (FDD) carrier and downlink subframes on a downlink data channel of a Time-Division Duplexing (TDD) carrier; a processor; a computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
determining whether the data has been correctly received; and
selecting a sequence and a modulation symbol, or selecting a modulation symbol to form a HARQ message in an uplink control channel sub-frame of an uplink FDD carrier, corresponding to one o

Assignees

• Huawei Tech Co Ltd

Inventors

• Berggren Fredrik
• Cheng Yan
• Xue Lixia
• Mazzarese David Jean-Marie

Classifications

• H04L1/1861

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L1/1854

  Scheduling and prioritising arrangements · CPC title

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title

• H04L5/1469

  using time-sharing · CPC title