METHOD AND APPARATUS FOR APPLYING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20140233469A1
• Filed: 05/02/2012
• Published: 08/21/2014
• Est. Priority Date: 05/02/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Dong Youn, Kim, Min Gyu, Yang, Suck Chel, Ahn, Joon Kui
• Granted Patent: US 9,385,857 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 27/2636 with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0019 in which one code is applied, as a temporal sequence, to all frequencies
• 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 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

Provided are a method and an apparatus for applying control information in a wireless communication system. The method includes the steps of: receiving a setting for ACK/NACK(acknowledgement/not-acknowledgement) repetition from a base station; receiving control information to be applied at a particular time point from the base station; transmitting ACK/NACK for the control information; and performing an operation according to the control information at the particular time point when the transmitted ACK/NACK is ACK, wherein the operation at the particular time point is applied to a subframe which is determined according to the setting for ACK/NACK repetition.

Claims

1. A method of applying control information of a terminal in a wireless communication system, the method comprising:

receiving a setting as to whether ACK/NACK (acknowledgement/not-acknowledgement) repetition is performed from a base station;

receiving control information that is applied from a specific time from the base station;

transmitting an ACK/NACK for the control information; and

performing an operation according to the control information from the specific time in a case where the transmitted ACK/NACK is an ACK,

wherein the operation performed from the specific time is determined depending on whether the ACK/NACK repetition is set.

2. The method of claim 1, wherein the control information is included in a higher layer signal received through a PDSCH (physical downlink shared channel).

3. The method of claim 1, wherein in a case where the ACK/NACK repetition is set, the ACK/NACK for the control information is repeatedly transmitted in subframes whose number is indicated by a parameter (N_ANRep) configured by a higher layer signal by the parameter.

4. The method of claim 3, wherein when a subframe in which the control information is received is a subframe n, and a maximum value of values that may be possessed by the parameter (N_ANRep) is max(N_{ANRep,configurable}), a subframe in which the operation according to the control information is performed begins from a subframe (n+max(N_{ANRep,configurable})+7).

5. The method of claim 4, wherein a serving cell in which the terminal operates is a serving cell that operates in FDD (frequency division duplex).

6. The method of claim 1, wherein a serving cell in which the terminal operates is a serving cell that operates in TDD (time division duplex).

7. The method of claim 6, wherein in a case where the ACK/NACK repetition is not set, when a downlink subframe for receiving the control information is a subframe n, and an uplink subframe in which the ACK/NACK for the control information is transmitted is a subframe n+m(n), a subframe in which the operation according to the control information is performed begins from a subframe n+m(n)+4, wherein m(n) is given as in the following table according to a UL-DL configuration of the serving cell in which the terminal operates and the subframe n:

8. The method of claim 7, wherein in a case where the ACK/NACK repetition is set so that the ACK/NACK for the control information is repeatedly transmitted in uplink subframes whose number is the same as a parameter N_ANRep configured by a higher layer signal, when a subframe for receiving the control information is a subframe n, a subframe in which the operation according to the control information is a subframe n+a+4, wherein a is a maximum value of values given as the number of subframes from the subframe n to N_ANRep uplink subframes including the subframe n+m(n) in a UL-DL configuration of a serving cell in which the terminal operates.

9. The method of claim 7, wherein in a case where the ACK/NACK repetition is set so that the ACK/NACK for the control information is repeatedly transmitted in N_ANRep uplink subframes, where N_ANRep is a parameter configured by a higher layer signal, if a subframe for receiving the control information is a subframe n, a subframe in which an operation according to the control information is performed is given as a subframe n+a+4, wherein a is a maximum value of values given as the number of subframes from the subframe n to N_ANRep uplink subframes including the subframe n+m(n) in a UL-DL configuration of a serving cell in which the terminal operates.

10. A terminal comprising:

an RF (Radio Frequency) unit transmitting and receiving a radio signal; and

a processor connected to the RF unit, wherein the processor receives a setting as to whether to perform ACK/NACK (acknowledgement/not-acknowledgement) repetition from a base station, receives control information that is applied from a specific time from the base station, transmits an ACK/NACK for the control information, and in a case where the transmitted ACK/NACK is an ACK, performs an operation according to the control information from the specific time, wherein the operation performed from the specific time applies from a subframe determined depending on whether the ACK/NACK repetition is set.