METHOD AND APPARATUS FOR PERFORMING HARQ BASED ON DYNAMIC CHANGE OF WIRELESS RESOURCES IN WIRELESS COMMUNICATION SYSTEM

• US 20150092629A1
• Filed: 05/02/2013
• Published: 04/02/2015
• Est. Priority Date: 05/03/2012
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Hanbyul, Kim, Myoungseob, Lee, Seungmin, Yang, Suckchel
• Application Number:
  US14/398,668
• Publication Number:
  US 20150092629A1
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• 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 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1461 Suppression of signals in the return path, i.e. bidirectional control circuits
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for a terminal to transceive a signal through a base station and a predetermined carrier in a time division duplex (TDD) communication system. In detail, the method includes the steps of: receiving, from the base station, information on dynamically changeable uplink/downlink subframe settings; selecting a representative uplink/downlink subframe setting from among the uplink/downlink subframe settings; and performing a hybrid automatic repeat request (HARQ) operation according to the representative uplink/downlink subframe setting.

Claims

1-14. -14. (canceled)

15. A method for transmitting and receiving signals at a user equipment (UE) in a time division duplex (TDD) communication system, the method comprising:

configuring a reference uplink/downlink configuration for a first serving cell from a plurality of uplink/downlink configurations by a higher layer,

receiving downlink control information containing a specific uplink/downlink configuration for the first serving cell among the plurality of uplink/downlink configurations from a base station; and

transmitting and receiving the signals based on the specific uplink/downlink configuration,

wherein, if at least one subframe is indicated as an uplink subframe in the reference uplink/downlink configuration, the UE is not expected to receive the downlink control information containing the specific uplink/downlink configuration that indicates at least one subframe as a downlink subframe.

16. The method according to claim 15, wherein one or more downlink subframes indicated by the specific uplink/downlink configuration are a subset of downlink subframes indicated by reference uplink/downlink configuration.

17. The method according to claim 15, wherein the reference uplink/downlink configuration has a maximum number of downlink subframes among the plurality of uplink/downlink configurations.

18. The method according to claim 15, wherein transmitting and receiving the signals comprises:

transmitting an acknowledgement (ACK)/negative ACK (NACK) response for at least one downlink data signal, on the uplink subframe indicated by the specific uplink/downlink configuration,

wherein the downlink subframe, on which the at least one downlink data signal is received, is indicated by the reference uplink/downlink configuration.

19. The method according to claim 15, wherein the reference uplink/downlink configuration indicates at least one downlink subframe corresponding to an acknowledgement (ACK)/negative ACK (NACK) response which is transmitted on the uplink subframe indicated by the specific uplink/downlink configuration.

20. The method according to claim 15, wherein configuring the reference uplink/downlink configuration for the first serving cell comprises:

configuring the reference uplink/downlink configuration for the second serving cell by the higher layer;

determining one of the reference uplink/downlink configuration for the first serving cell and the reference uplink/downlink configuration for the second serving cell as the reference uplink/downlink configuration for both the first serving cell and the second serving cell.

21. The method according to claim 20, wherein the reference uplink/downlink configuration for the first serving cell is different from the reference uplink/downlink configuration for the second serving cell.

22. A user equipment (UE) apparatus in a time division duplex (TDD) communication system, the UE apparatus comprising:

a wireless communication module configured to transmit and receive signals with a base station; and

a processor configured to process the signals,

wherein the processor configures a reference uplink/downlink configuration for a first serving cell from a plurality of uplink/downlink configurations by a higher layer, and

wherein the processor controls the wireless communication module to receive downlink control information containing a specific uplink/downlink configuration for the first serving cell among the plurality of uplink/downlink configurations from a base station, and to transmit and receiving signals based on the specific uplink/downlink configuration,

wherein, if at least one subframe is indicated as an uplink subframe in the reference uplink/downlink configuration, the UE is not expected to receive the downlink control information containing the specific uplink/downlink configuration that indicates at least one subframe as a downlink subframe.

23. The UE apparatus according to claim 22, wherein one or more downlink subframes indicated by the specific uplink/downlink configuration are a subset of downlink subframes indicated by reference uplink/downlink configuration.

24. The UE apparatus according to claim 22, wherein the reference uplink/downlink configuration has a maximum number of downlink subframes among the plurality of uplink/downlink configurations.

25. The UE apparatus according to claim 22, wherein the processor controls the wireless communication module to transmit an acknowledgement (ACK)/negative ACK (NACK) response for at least one downlink data signal, on the uplink subframe indicated by the specific uplink/downlink configuration,

wherein the downlink subframe, on which the at least one downlink data signal is received, is indicated by the reference uplink/downlink configuration.

26. The UE apparatus according to claim 22, wherein the reference uplink/downlink configuration indicates at least one downlink subframe corresponding to an acknowledgement (ACK)/negative ACK (NACK) response which is transmitted on the uplink subframe indicated by the specific uplink/downlink configuration.

27. The UE apparatus according to claim 22, wherein the processor configures the reference uplink/downlink configuration for the second serving cell by the higher layer and determines one of the reference uplink/downlink configuration for the first serving cell and the reference uplink/downlink configuration for the second serving cell as the reference uplink/downlink configuration for both the first serving cell and the second serving cell.

28. The UE apparatus according to claim 27, wherein the reference uplink/downlink configuration for the first serving cell is different from the reference uplink/downlink configuration for the second serving cell.