METHOD AND APPARATUS OF TRANSMITTING AND RECEIVING BACKHAUL DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

• US 20120069790A1
• Filed: 05/19/2010
• Published: 03/22/2012
• Est. Priority Date: 05/19/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chung, Jae Hoon, Park, Kyu Jin, Moon, Sung Ho, Kwon, Yeong Hyeon
• Granted Patent: US 8,644,210 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• 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: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

The present invention relates to a method and an apparatus of transmitting and receiving backhaul downlink control information in a wireless communication system. In the method for transmitting backhaul downlink control information from a base station in a wireless communication system according to one aspect of the present invention, the base station transmits resource allocation information to at least one terminal and at least one relay node via a relay-physical downlink control channel (hereinafter referred to as “R-PDCCH”); transmits backhaul system information to the at least one relay node and the at least one terminal via a relay physical downlink shared channel (hereinafter referred to as “R-PDSCH”) which is determined according to the resource allocation information; and changes a backhaul downlink resource block according to the backhaul system information.

Claims

1. A method for transmitting backhaul downlink control information by a base station of a wireless communication system, the method comprising:

transmitting resource assignment information to one or more user equipments (UEs) and one or more relay nodes (RNs) over a relay-physical downlink control channel (R-PDCCH);

transmitting backhaul system information to the one or more RNs and the one or more UEs over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information; and

changing a backhaul downlink resource region according to the backhaul system information.

2. The method according to claim 1, wherein the backhaul system information is resource assignment information of the backhaul downlink.

3. The method according to claim 1, wherein the R-PDCCH is assigned to OFDM symbols located after a guard time for transmission/reception (Tx/Rx) mode switching of a backhaul downlink.

4. A method for receiving backhaul downlink control information by a relay node (RN) of a wireless communication system, the method comprising:

receiving resource assignment information from a base station over a relay-physical downlink control channel (R-PDCCH);

receiving backhaul system information from the base station over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information; and

receiving a backhaul downlink subframe according to the backhaul system information.

5. The method according to claim 4, wherein the R-PDCCH is assigned to OFDM symbols located after a guard time for transmission/reception (Tx/Rx) mode switching of a backhaul downlink.

6. A method for receiving backhaul downlink control information by a user equipment (UE) of a wireless communication system, the method comprising:

receiving resource assignment information from a base station over a relay-physical downlink control channel (R-PDCCH);

receiving backhaul system information from the base station over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information; and

receiving a downlink subframe according to the backhaul system information.

7. The method according to claim 6, wherein the R-PDCCH is assigned to OFDM symbols located after a guard time for transmission/reception (Tx/Rx) mode switching of a backhaul downlink.

8. A base station comprising:

a transmission (Tx) module for transmitting resource assignment information to one or more user equipments (UEs) and one or more relay nodes (RNs) over a relay-physical downlink control channel (R-PDCCH), and transmitting backhaul system information to the one or more RNs and the one or more UEs over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information; and

a processor for changing a backhaul downlink resource region according to the backhaul system information.

9. The base station according to claim 8, wherein the R-PDCCH is assigned to OFDM symbols located after a guard time for transmission/reception (Tx/Rx) mode switching of a backhaul downlink.

10. A relay node (RN) comprising:

a reception (Rx) module for receiving resource assignment information from a base station over a relay-physical downlink control channel (R-PDCCH), receiving backhaul system information from the base station over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information, and receiving a backhaul downlink subframe according to the backhaul system information.

11. A user equipment (UE) comprising:

a reception (Rx) module for receiving resource assignment information from a base station over a relay-physical downlink control channel (R-PDCCH), receiving backhaul system information from the base station over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information, and receiving a downlink subframe according to the backhaul system information; and

a processor for decoding the subframe.

12. A method for transmitting backhaul downlink control information by a base station of a wireless communication system, the method comprising:

transmitting first resource assignment information to one or more user equipments (UEs) over a physical downlink control channel (PDCCH);

transmitting backhaul system information to the one or more UEs over a physical downlink shared channel (PDSCH) determined according to the first resource assignment information;

transmitting second resource assignment information to one or more relay nodes (RNs) over a relay-physical downlink control channel (R-PDCCH);

transmitting the backhaul system information to the one or more RNs over a relay-physical downlink shared channel (R-PDSCH) determined according to the second resource assignment information; and

changing a backhaul downlink resource region according to the backhaul system information.

13. A method for transmitting backhaul downlink control information by a base station of a wireless communication system, the method comprising:

transmitting resource assignment information to one or more user equipments (UEs) over a physical downlink control channel (PDCCH);

transmitting the resource assignment information to one or more relay nodes (RNs) over a relay-physical downlink control channel (R-PDCCH);

transmitting backhaul system information to the one or more RNs and the one or more UEs over a relay-physical downlink shared channel (R-PDSCH) determined according to the resource assignment information; and

changing a backhaul downlink resource region according to the backhaul system information.

14. A method for transmitting backhaul control information by a base station of a wireless communication system, the method comprising:

transmitting uplink resource assignment information to a relay node (RN) over an uplink grant relay-physical downlink control channel (R-PDCCH) multiplexed by a frequency division multiplexing (FDM) scheme; and

receiving data from the relay node (RN) through uplink resources assigned according to the resource assignment information.