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

• US 9,414,369 B2
• Filed: 02/05/2015
• Issued: 08/09/2016
• 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
• Assistant Examiner(s): ALI, SYED
• Application Number:
  US14/615,236
• Publication Number:
  US 20150156765A1
• Time in Patent Office: 551 Days
• Field of Search: 370/279
• US Class Current: 1/1
• 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 a wireless station are described for receiving signals. The wireless station receives from a base station configured to use at least one of a plurality of time division duplex (TDD) uplink-downlink (UL-DL) subframe configurations, each of which indicates locations of at least one DL subframe and at least one UL subframe in a radio frame, a signal including information indicating that at least one uplink subframe indicated by the at least one of the plurality of TDD UL-DL subframe configurations is reconfigured as a DL subframe. The wireless station receives, from the base station, DL data on the UL subframe according to the signal.

Claims

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

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

wherein the wireless station and the base station are configured to use at least one of a plurality of time division duplex (TDD) uplink-downlink (UL-DL) subframe configurations, each of which indicates locations of one or more TDD DL subframes and one or more TDD UL subframes in a radio frame,

wherein the radio frame comprises 10 subframes,

wherein the first signal includes first information indicating that at least one TDD UL subframe indicated by the at least one of the plurality of TDD UL-DL subframe configurations is reconfigured as at least one TDD DL subframe, and

wherein the at least one of the plurality of TDD UL-DL subframe configurations corresponds to one or more of configurations in Table 1 below, wherein ‘

D’

denotes a DL subframe, ‘

U’

denotes a UL subframe, and ‘

S’

denotes a special subframe;

2. The method of claim 1, wherein the first signal corresponds to at least one of a physical layer signal and a radio resource control (RRC) signal.

3. The method of claim 1, wherein the first signal allows only at least one UL subframe among the one or more UL subframes and the one or more DL subframes, indicated by the at least one TDD UL-DL configuration to be reconfigured as the DL subframe.

4. The method of claim 1, wherein the one or more UL subframes except for the one or more DL subframes indicated by the at least one TDD UL-DL configuration are reconfigured as the DL subframe.

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

6. The method of claim 1, further comprising:

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

7. A method of transmitting signals, the method comprising:

transmitting, from a base station to a wireless station, a first signal,

wherein the base station and the wireless station are configured to use at least one of a plurality of time division duplex (TDD) uplink-downlink (UL-DL) subframe configurations, each of which indicates locations of one or more TDD DL subframes and one or more TDD UL frames in a radio frame,

wherein the radio frame comprises 10 subframes,

wherein the first signal includes first information indicating that at least one TDD UL subframe indicated by the at least one of the plurality of TDD UL-DL subframe configurations is reconfigured as at least one TDD DL subframe, and

wherein the at least one of the plurality of TDD UL-DL subframe configurations corresponds to one or more 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 method of claim 7, wherein the first signal corresponds to at least one of a physical layer signal and a radio resource control (RRC) signal.

9. 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 first signal,

wherein the base station and the wireless station are configured to use at least one of a plurality of time division duplex (TDD) uplink-downlink (UL-DL) subframe configurations, each of which indicates locations of one or more TDD DL subframes and one or more TDD UL subframes in a radio frame,

wherein the radio frame comprises 10 subframes,

wherein the first signal includes first information indicating that at least one TDD UL subframe indicated by the at least one TDD UL-DL subframe configuration is reconfigured as at least one TDD DL subframe, and

wherein the at least one of the plurality of TDD UL-DL subframe configurations corresponds to one or more of configurations in Table 1 below, wherein ‘

D’

denotes a DL subframe, ‘

U’

denotes a UL subframe, and ‘

S’

denotes a special subframe;

10. The wireless station of claim 9, wherein the first signal corresponds to at least one of a physical layer signal and a radio resource control (RRC) signal.