Method and apparatus for transmitting signal in wireless communication system

• US 9,843,381 B2
• Filed: 08/25/2016
• Issued: 12/12/2017
• Est. Priority Date: 12/29/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Han Byul, Kim, Byoung Hoon
• Primary Examiner(s): Liu, Jung-Jen
• Application Number:
  US15/247,155
• Publication Number:
  US 20160365919A1
• Time in Patent Office: 474 Days
• CPC Class Codes: H04B 7/15 Active relay systems
• CPC Class Codes: H04B 7/15507 Relay station based processing for cell extension or control of coverage area, network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method of transmitting a signal of a base station in a wireless communication system is provided. The method includes transmitting a first signal to the relay station through the transmission period in a subframe including a transmission period and a guard time for transmission/reception switching of a relay station, and transmitting a second signal to a macro user equipment through the guard time. Accordingly, a signal can be effectively transmitted in the wireless communication system employing the relay station.

Claims

1. A method for transmitting a control channel and a data channel by a base station (BS), the method comprising:

transmitting multicast/broadcast single frequency network (MBSFN) configuration to a relay node (RN), the MBSFN configuration indicating at least one BS-to-RN subframe among a plurality of subframes, the at least one BS-to-RN subframe being used for communication from the BS to the RN;

transmitting a downlink (DL) control channel intended for the RN in the at least one BS-to-RN subframe, the DL control channel including a downlink resource assignment; and

when the downlink resource assignment is transmitted in a specific frequency band of the DL control channel of the at least one BS-to-RN subframe, and when the downlink resource assignment indicates the specific frequency band, transmitting downlink data on a DL data channel of the at least one BS-to-RN subframe indicated by the downlink resource assignment, wherein the DL data channel is transmitted in the specific frequency band of the at least one BS-to-RN subframe.

2. The method of claim 1, wherein a dedicated reference signal is transmitted in the at least one BS-to-RN subframe.

3. The method of claim 1, wherein each subframe of the at least one BS-to-RN subframe includes a partition in the time domain, the partition separating each of the at least one BS-to-RN subframe into a first part followed by a second part.

4. The method of claim 3, wherein the DL control channel is transmitted in the first part and the DL data channel is transmitted in the second part.

5. The method of claim 4, wherein the second part is contiguous to the first part.

6. The method of claim 4, wherein the second part is not contiguous to the first part.

7. A base station (BS) comprising:

a radio frequency (RF) unit configured to transmit and receive a radio signal; and

a processor coupled to the RF unit and configured to;

transmit multicast/broadcast single frequency network (MBSFN) configuration to a relay node (RN), the MBSFN configuration indicating at least one BS-to-RN subframe among a plurality of subframes, the at least one BS-to-RN subframe being used for communication from the BS to the RN;

transmit a downlink (DL) control channel intended for the RN in the at least one BS-to-RN subframe, the DL control channel including a downlink resource assignment; and

when the downlink resource assignment is transmitted in a specific frequency band of the DL control channel of the at least one BS-to-RN subframe, and when the downlink resource assignment indicates the specific frequency band, transmit downlink data on a DL data channel of the at least one BS-to-RN subframe indicated by the downlink resource assignment, wherein the DL data channel is transmitted in the specific frequency band of the at least one BS-to-RN subframe.

8. The BS of claim 7, wherein a dedicated reference signal is transmitted in the at least one BS-to-RN subframe.

9. The BS of claim 7, wherein each subframe of the at least one BS-to-RN subframe includes a partition in the time domain, the partition separating each of the at least one BS-to-RN subframe into a first part followed by a second part.

10. The BS of claim 9, wherein the DL control channel is transmitted in the first part and the DL data channel is received in the second part.

11. The BS of claim 10, wherein the second part is contiguous to the first part.

12. The BS of claim 10, wherein the second part is not contiguous to the first part.