USER EQUIPMENT, PDSCH A/N TRANSMITTING METHOD THEREOF, TRANSMISSION/RECEPTION POINT, AND PDSCH A/N RECEIVING METHOD THEREOF

• US 20130155915A1
• Filed: 12/14/2012
• Published: 06/20/2013
• Est. Priority Date: 12/16/2011
• Status: Active Grant

• Current Assignee: Pantech Corporation (Ideahub, Inc.)
• Original Assignee: Pantech Corporation (Ideahub, Inc.)
• Inventors: PARK, Dong Hyun, YOON, Sung Jun
• Granted Patent: US 8,873,519 B2
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• 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 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• 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 system that includes a transmission/reception point and a user equipment having different configurations in inter-band and performs a TDD (Time Division Duplex) method.

Claims

1. A user equipment configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), the PCell and the SCell having different Time Division Duplex (TDD) Uplink-Downlink (UL-DL) configurations, the user equipment comprising:

a transmitter configured to transmit first acknowledgement/negative acknowledgement (A/N) in an uplink subframe determined by a reference TDD configuration for the SCell, the first A/N corresponding to a physical downlink shared channel (PDSCH) transmission on the SCell,

wherein the reference TDD configuration for the SCell has a greatest number of uplink subframes from among one or more reference TDD configurations for the TDD UL-DL configurations of the PCell and the SCell in Table 1 below;

2. The user equipment of claim 1, wherein the transmitter is configured to transmit second A/N in an uplink subframe determined by a reference TDD configuration for the PCell, the second A/N corresponding to a PDSCH transmission on the PCell,

wherein the reference TDD configuration for the PCell is the TDD UL-DL configuration of the PCell.

3. The user equipment of claim 1, wherein, if the one or more reference TDD configurations include the TDD UL-DL configuration of the SCell, the reference TDD configuration for the SCell is the TDD UL-DL configuration of the SCell.

4. A method for transmitting acknowledgement/negative acknowledgement (A/N) by a user equipment configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), the PCell and the SCell having different Time Division Duplex (TDD) Uplink-Downlink (UL-DL) configurations, the method comprising:

transmitting first A/N in an uplink subframe determined by a reference TDD configuration for the SCell, the first A/N corresponding to a physical downlink shared channel (PDSCH) transmission on the SCell,

wherein the reference TDD configuration for the SCell has a greatest number of uplink subframes from among one or more reference TDD configurations for the TDD UL-DL configurations of the PCell and the SCell in Table 1 below;

5. The method of claim 4, further comprising:

transmitting second A/N in an uplink subframe determined by a reference TDD configuration for the PCell, the second A/N corresponding to a PDSCH transmission on the PCell,

wherein the reference TDD configuration for the PCell is the TDD UL-DL configuration of the PCell.

6. The method of claim 4, wherein, if the one or more reference TDD configurations include the TDD UL-DL configuration of the SCell, the reference TDD configuration for the SCell is the TDD UL-DL configuration of the SCell.

7. A transmission/reception point that communicates with a user equipment configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), the PCell and the SCell having different Time Division Duplex (TDD) Uplink-Downlink (UL-DL) configurations, the transmission/reception point comprising:

a receiver configured to receive first acknowledgement/negative acknowledgement (A/N) from the user equipment in an uplink subframe determined by a reference TDD configuration for the SCell, the first A/N corresponding to a physical downlink shared channel (PDSCH) transmission on the SCell,

wherein the reference TDD configuration for the SCell has a greatest number of uplink subframes from among one or more reference TDD configurations for the TDD UL-DL configurations of the PCell and the SCell in Table 1 below;

8. The transmission/reception point of claim 7, wherein the receiver is configured to receive second A/N from the user equipment in an uplink subframe determined by a reference TDD configuration for the PCell, the second A/N corresponding to a PDSCH transmission on the PCell,

wherein the reference TDD configuration for the PCell is the TDD UL-DL configuration of the PCell.

9. The transmission/reception point of claim 7, wherein, if the one or more reference TDD configurations include the TDD UL-DL configuration of the SCell, the reference TDD configuration for the SCell is the TDD UL-DL configuration of the SCell.

10. A method for receiving acknowledgement/negative acknowledgement (A/N) by a transmission/reception point that communicates with a user equipment configured with at least two serving cells comprising a primary cell (PCell) and a secondary cell (SCell), the PCell and the SCell having different Time Division Duplex (TDD) Uplink-Downlink (UL-DL) configurations, the method comprising:

receiving first A/N from the user equipment in an uplink subframe determined by a reference TDD configuration for the SCell, the first A/N corresponding to a physical downlink shared channel (PDSCH) transmission on the SCell,

wherein the reference TDD configuration for the SCell has a greatest number of uplink subframes from among one or more reference TDD configurations for the TDD UL-DL configurations of the PCell and the SCell in Table 1 below;

11. The method of claim 10, further comprising:

receiving second A/N from the user equipment in an uplink subframe determined by a reference TDD configuration for the PCell, the second A/N corresponding to a PDSCH transmission on the PCell,

wherein the reference TDD configuration for the PCell is the TDD UL-DL configuration of the PCell.

12. The method of claim 10, wherein, if the one or more reference TDD configurations include the TDD UL-DL configuration of the SCell, the reference TDD configuration for the SCell is the TDD UL-DL configuration of the SCell.