Method and apparatus of transmitting and receiving backhaul downlink control information in a wireless communication system
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.
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.