METHOD FOR TRANSMITTING AND RECEIVING SIGNAL USING TIME DIVISION DUPLEX MODE IN WIRELESS ACCESS SYSTEM, AND APPARATUS THEREFOR

• US 20150312905A1
• Filed: 01/07/2013
• Published: 10/29/2015
• Est. Priority Date: 01/06/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: SEO, Hanbyul, KIM, Kijun
• Granted Patent: US 9,282,558 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 17/318 Received signal strength
• 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: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/0098 Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/42 in systems with time, space, frequency or polarisation diversity
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

Disclosed are a method for transmitting and receiving a signal according to a time division duplex mode by using the setting of multiple subframes for one cell in a wireless access system, and an apparatus for supporting the same. According to one embodiment of the present invention, a method for transmitting and receiving a signal of a base station using a time division duplex (TDD) mode in a wireless access system may comprise the steps of: determining the setting of a first subframe allocated to a first terminal and the setting of a second subframe allocated to a second terminal, among the setting of multiple subframes operating at one carrier frequency; transmitting information indicating the first terminal and the second terminal, respectively; and receiving a signal from the first terminal according to the first subframe setting while transmitting a signal to the second terminal according to the second subframe setting.

Claims

1. A method for transmitting and receiving a signal by using a Time Division Duplex (TDD) mode in a wireless access system, the method performed by a base station and comprising:

deciding a first subframe configuration allocated to a first user equipment and a second subframe configuration allocated to a second user equipment, among multiple subframe settings operating in a single carrier frequency;

transmitting information respectively indicating the first subframe configuration and the second subframe configuration to the first user equipment and the second user equipment; and

receiving a signal from the first user equipment with respect to the first subframe configuration and simultaneously transmitting a signal to the second user equipment with respect to the second subframe configuration.

2. The method of claim 1, wherein information indicating the first subframe configuration is transmitted through a system information block (SIB) and is provided to a legacy user equipment.

3. The method of claim 2, wherein the radio resource measurement (RRL) and radio link monitoring (RLM) are set up to be performed only in a subframe designated as a downlink subframe in the first subframe configuration.

4. The method of claim 2, wherein the second subframe configuration is decided as an uplink only in a subframe decided as an uplink in the first subframe configuration.

5. The method of claim 1, wherein the step of transmitting a signal to the second user equipment comprises:

reducing transmission power of a signal being transmitted to the second signal.

6. The method of claim 1, further comprising:

removing interference caused by a signal being transmitted to the second user equipment to interfere with a signal being received from the first user equipment.

7. The method of claim 6, wherein the step of removing interference comprises:

reducing a signal being transmitted to the second user equipment from a signal received from the first user equipment.

8. The method of claim 1, wherein the step of transmitting information comprises:

including an indicator indicating one of the first subframe configuration and the second subframe configuration to downlink control information (DCI) and transmitting the processed information.

9. The method of claim 1, further comprising:

transmitting a signal to the first user equipment with respect to the first subframe configuration and simultaneously receiving a signal from the second user equipment with respect to the second subframe configuration.

10. The method of claim 1, further comprising:

performing scheduling so as to position the first user equipment and the second user equipment at remote distances from one another.

11. The method of claim 1, further comprising:

deciding subframes being set up as downlink in both the first subframe configuration and the second subframe configuration as a first subframe group;

deciding subframes being set up as downlink in any one of the first subframe configuration and the second subframe configuration as a second subframe group; and

transmitting information indicating channel state information measurement to be separately performed in the first subframe group and the second subframe group to the first user equipment and the second user equipment.

12. A base station to transmit and receive a signal by using a Time Division Duplex (TDD) mode in a wireless access system, the base station comprises:

an RF (Radio Frequency) unit configured to transmit and receive a radio signal; and

a processor configured to control the base station including the RF unit,

wherein the processor is configured to;

decide a first subframe configuration allocated to a first user equipment and a second subframe configuration allocated to a second user equipment, among multiple subframe settings operating in a single carrier frequency,

transmit information respectively indicating the first subframe configuration and the second subframe configuration to the first user equipment and the second user equipment, and

receive a signal from the first user equipment with respect to the first subframe configuration and simultaneously transmit a signal to the second user equipment with respect to the second subframe configuration.

13. The base station of claim 12, wherein information indicating the first subframe configuration is transmitted through a system information block (SIB) and is provided to a legacy user equipment.

14. The base station of claim 13, wherein the radio resource measurement (RRL) and radio link monitoring (RLM) are set up to be performed only in a subframe designated as a downlink subframe in the first subframe configuration.

15. The base station of claim 13, wherein the second subframe configuration is decided as an uplink only in a subframe decided as an uplink in the first subframe configuration.