METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING A CONTROL FORMAT INDICATOR CHANNEL FOR A RELAY BACKHAUL LINK IN A WIRELESS COMMUNICATION SYSTEM

• US 20120121028A1
• Filed: 07/14/2010
• Published: 05/17/2012
• Est. Priority Date: 07/14/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, So Yeon, Cho, Han Gyu, Moon, Sung Ho, Kwon, Yeong Hyeon, Chung, Jae Hoon, Park, Gyu Jin
• Granted Patent: US 8,792,327 B2
• Time in Patent Office: Days
• US Class Current: 375/259
• CPC Class Codes: H04L 27/00 Modulated-carrier systems
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• 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 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The present invention relates to a method and an apparatus for transmitting/receiving a control format indicator channel for a relay backhaul link in a wireless communication system. According to one aspect of the present invention, a method for transmitting a control format indicator channel for a relay backhaul link in a wireless communication system is configured such that a base station generates a relay physical control format indicator channel (hereinafter, referred to as “R-PCFICH”) containing information on a relay physical downlink control channel (hereinafter, referred to as “R-PDCCH”) region, and transmits the R-PCFICH through a first OFDM symbol of the R-PDCCH region.

Claims

1. A method for transmitting a control format indicator channel for a backhaul link by a base station (BS) of a wireless communication system, the method comprising:

generating a relay physical control format indicator channel (R-PCFICH) including information of a relay physical downlink control channel (R-PDCCH) region; and

transmitting the R-PCFICH through a first orthogonal frequency division multiplexing (OFDM) symbol of the R-PDCCH region,

wherein the R-PCFICH further includes information regarding a number of OFDM symbols contained in the R-PDCCH region.

2. The method according to claim 1, wherein the R-PCFICH further includes an integer number of physical resource blocks (PRBs).

3. The method according to claim 1, wherein the R-PCFICH is distributed and mapped on a frequency axis of the first OFDM symbol at regular intervals.

4. The method according to claim 1, wherein the information regarding the number of OFDM symbols is represented in units of one OFDM symbol or units of a predetermined number of OFDM symbols.

5. The method according to claim 1, wherein the R-PCFICH is transmitted per every subframe.

6. A method for receiving a control format indicator channel for a backhaul link by a user equipment (UE) of a wireless communication system, the method comprising:

receiving a relay physical control format indicator channel (R-PCFICH) including information of a relay physical downlink control channel (R-PDCCH) region through a first orthogonal frequency division multiplexing (OFDM) symbol of the R-PDCCH region; and

decoding the R-PDCCH region using the information of the R-PDCCH region,

wherein the R-PCFICH further includes information regarding a number of OFDM symbols contained in the R-PDCCH region.

7. The method according to claim 6, wherein the R-PCFICH further includes an integer number of physical resource blocks (PRBs).

8. The method according to claim 6, wherein the R-PCFICH is distributed and mapped on a frequency axis of the first OFDM symbol at regular intervals.

9. The method according to claim 6, wherein the information regarding the number of OFDM symbols is represented in units of one OFDM symbol or units of a predetermined number of OFDM symbols.

10. The method according to claim 6, wherein the R-PCFICH is transmitted per every subframe.

11. A base station (BS) for a wireless communication system supporting a relay node (RN), the BS comprising:

a processor for generating a relay physical control format indicator channel (R-PCFICH) including information of a relay physical downlink control channel (R-PDCCH) region; and

a transmission module for transmitting the R-PCFICH through a first orthogonal frequency division multiplexing (OFDM) symbol of the R-PDCCH region,

wherein the R-PCFICH further includes information regarding a number of OFDM symbols contained in the R-PDCCH region.

12. The base station (BS) according to claim 11, wherein the R-PCFICH further includes an integer number of physical resource blocks (PRBs).

13. The base station (BS) according to claim 11, wherein the R-PCFICH is distributed and mapped on a frequency axis of the first OFDM symbol at regular intervals.

14. The base station (BS) according to claim 11, wherein the information regarding the number of OFDM symbols is represented in units of one OFDM symbol or units of a predetermined number of OFDM symbols.

15. The base station (BS) according to claim 11, wherein the R-PCFICH is transmitted per every subframe.

16. A user equipment (UE) for a wireless communication system supporting a relay node (RN), the UE comprising:

a reception module for receiving a relay physical control format indicator channel (R-PCFICH) including information of a relay physical downlink control channel (R-PDCCH) region through a first orthogonal frequency division multiplexing (OFDM) symbol of the R-PDCCH region; and

a processor for decoding the R-PDCCH region using the information of the R-PDCCH region,

wherein the R-PCFICH further includes information regarding a number of OFDM symbols contained in the R-PDCCH region.

17. The user equipment (UE) according to claim 16, wherein the R-PCFICH further includes an integer number of physical resource blocks (PRBs).

18. The user equipment (UE) according to claim 16, wherein the R-PCFICH is distributed and mapped on a frequency axis of the first OFDM symbol at regular intervals.

19. The user equipment (UE) according to claim 16, wherein the information regarding the number of OFDM symbols is represented in units of one OFDM symbol or units of a predetermined number of OFDM symbols.

20. The user equipment (UE) according to claim 16, wherein the R-PCFICH is transmitted per every subframe.