Method and apparatus for relaying data in wireless communication system based on TDD

• US 10,313,092 B2
• Filed: 07/06/2016
• Issued: 06/04/2019
• Est. Priority Date: 11/11/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byoung Hoon, Kwon, Yeong Hyeon, Seo, Han Byul, Chung, Jae Hoon, Yun, Young Woo, Lee, Dae Won
• Primary Examiner(s): Nawaz, Asad M
• Assistant Examiner(s): Ali, Syed
• Application Number:
  US15/203,560
• Publication Number:
  US 20160315753A1
• Time in Patent Office: 1,063 Days
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• 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
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and wireless station for receiving signals. The wireless station receives, from a base station, a control signal on a first subframe indicated as a downlink (DL) subframe by a time division duplex (TDD) uplink-downlink (UL-DL) subframe configuration. The control signal includes first information indicating that at least one UL subframe indicated by the TDD UL-DL subframe configuration is reconfigured as a TDD DL subframe. The wireless station receives, from the base station, DL data on a second subframe which was indicated as a TDD UL subframe by the TDD UL-DL subframe configuration but is currently reconfigured as a TDD DL subframe by the control signal. The wireless station transmits, to the base station, UL data on a TDD UL subframe except for being reconfigured as the TDD DL subframe by the control signal.

Claims

1. A method of receiving signals, the method comprising:

receiving, by a wireless station from a base station, a control signal,

wherein the control signal is received on a first subframe indicated as a downlink (DL) subframe by a first time division duplex (TDD) uplink-downlink (UL-DL) subframe configuration,

wherein the control signal includes a second TDD UL-DL subframe configuration,

wherein the second TDD UL-DL subframe configuration allows at least one UL subframe indicated by the first TDD UL-DL subframe configuration, except for one or more DL subframes indicated by the first TDD UL-DL subframe configuration, to be reconfigured as a TDD DL subframe, and

wherein the at least one UL subframe indicated by the first TDD UL-DL subframe configuration is different from a TDD special subframe indicated by the first TDD UL-DL subframe configuration;

receiving, by the wireless station from the base station, DL data on a second subframe which was indicated as a TDD UL subframe by the first TDD UL-DL subframe configuration but is currently reconfigured as a TDD DL subframe by the second TDD UL-DL subframe configuration of the control signal; and

transmitting, by the wireless station to the base station, a first UL data on a first TDD UL subframe,

wherein the first TDD UL subframe on which the first UL data is transmitted is different from the TDD UL subframe currently reconfigured as the TDD DL subframe by the second TDD UL-DL subframe configuration of the control signal,

wherein each of the first and second TDD UL-DL subframe configurations comprises 10 subframes, and

wherein the control signal corresponds to at least one of a physical layer signal and a radio resource control (RRC) signal.

2. The method of claim 1, wherein each of the first and second TDD UL-DL subframe configurations corresponds to at least any one of configurations in Table 1 below, wherein ‘

D’

denotes a DL subframe, ‘

U’

denotes a UL subframe, and ‘

S’

denotes a special subframe;

3. The method of claim 1, wherein the second subframe, which was indicated as the TDD UL subframe by the first TDD UL-DL subframe configuration, but is currently reconfigured as the TDD DL subframe by the second TDD UL-DL subframe configuration, is not allowed for other wireless devices to perform a transmission.

4. The method of claim 1, wherein the one or more DL subframes indicated by the first TDD UL-DL configuration are impossible to be reconfigured by the control signal.

5. The method of claim 1, further comprising:

receiving information indicating a TDD UL subframe, which is not allowed for other wireless devices to perform the transmission.

6. A wireless station for receiving signals, the wireless station comprising:

a transceiver; and

a processor configured to;

control the transceiver to receive, from a base station, a control signal,

wherein the control signal is received on a first subframe indicated as a downlink (DL) subframe by a first time division duplex (TDD) uplink-downlink (UL-DL) subframe configuration,

wherein the control signal includes a second TDD UL-DL subframe configuration,

wherein the second TDD UL-DL subframe configuration allows at least one UL subframe indicated by the first TDD UL-DL subframe configuration, except for one or more DL subframes indicated by the first TDD UL-DL subframe configuration, to be reconfigured as a TDD DL subframe, and

wherein the at least one UL subframe indicated by the first TDD UL-DL subframe configuration is different from a TDD special subframe indicated by the first TDD UL-DL subframe configuration,

control the transceiver to receive, from the base station, DL data on a second subframe which was indicated as a TDD UL subframe by the first TDD UL-DL subframe configuration but is currently reconfigured as a TDD DL subframe by the second TDD UL-DL subframe configuration of the control signal, and

control the transceiver to transmit, to the base station, a first UL data on a first TDD UL subframe,

wherein the first TDD UL subframe on which the first UL data is transmitted is different from the TDD UL subframe currently reconfigured as the TDD DL subframe by the second TDD UL-DL subframe configuration of the control signal,

wherein each of the first and second TDD UL-DL subframe configurations comprises 10 subframes, and

wherein the control signal corresponds to at least one of a physical layer signal and a radio resource control (RRC) signal.

7. The wireless station of claim 6, wherein each of the first and second TDD UL-DL subframe configurations corresponds to at least any one of configurations in Table 1 below, wherein ‘

D’

denotes a DL subframe, ‘

U’

denotes a UL subframe, and ‘

S’

denotes a special subframe;

8. The wireless station of claim 6, wherein the second subframe, which was indicated as the TDD UL subframe by the first TDD UL-DL subframe configuration, but is currently reconfigured as the TDD DL subframe by the second TDD UL-DL subframe configuration, is not allowed for other wireless devices to perform a transmission.

9. The wireless station of claim 6, wherein the one or more DL subframes indicated by the first TDD UL-DL configuration are impossible to be reconfigured by the control signal.