Method and apparatus for transmitting control information in wireless communication system
The present invention pertains to a wireless communication system, and more particularly, to a method of receiving a downlink (DL) control channel in a wireless communication system and an apparatus therefor, and the method comprises the following steps: receiving a radio resource control (RRC) message including resource block (RB) allocation information; receiving a subframe having a plurality of physical RBs; and monitoring a plurality of downlink control channel candidates in a physical RB set corresponding to the RB allocation information from the plurality of physical RBs to detect a downlink control channel allocated to a communication device, wherein the plurality of downlink control channel candidates do not continuously exist in a virtual RB set corresponding to the physical RB set.
1. A method for receiving a downlink control channel by a communication device in a wireless communication system, the method comprising:
receiving resource information; and
decoding downlink control channel candidates in a resource set based on the received resource information;
wherein the downlink control channel candidates include n th and (n+1) th downlink control channel candidates for a given aggregation level;
wherein a spacing between a last resource of the n th downlink control channel candidate and a first resource of the (n+1) th downlink control channel candidate in the resource set depends on the given aggregation level.
2. The method of claim 1 , wherein the resource set for control information is defined by a resource block set and an orthogonal frequency division multiplexing (OFDM) symbol set in one time unit.
3. The method of claim 2 , wherein resources other than resources in the resource set for control information in a bandwidth of the time unit are used for a physical downlink shared channel (PDSCH) transmission.
4. The method of claim 1 , wherein the n th and (n+1) th downlink control channel candidates of the aggregation level are discontinuous in the control channel element set.
5. The method of claim 1 , wherein each of the n th and (n+1) th downlink control channel candidates of the aggregation level consists of L consecutive control channel elements, and wherein L represents the aggregation level.
6. The method of claim 1 , wherein the downlink control channel candidates include physical downlink control channel candidates, and the downlink control channel includes an PDCCH.
7. A communication apparatus for use in a wireless communication system, comprising:
a transmitter and a receiver; and
a processor, operatively connected to the transmitter and the receiver, configured to:
control the receiver to receive resource information, and
decode downlink control channel candidates in a resource set based on the received resource information,
wherein the downlink control channel candidates include n th and (n+1) th downlink control channel candidates for a given aggregation level;
wherein a spacing between a last resource of the n th downlink control channel candidate and a first resource of the (n+1) th downlink control channel candidate in the resource set depends on the given aggregation level.
8. The communication apparatus of claim 7 , wherein the resource set for control information is defined by a resource block set and an orthogonal frequency division multiplexing (OFDM) symbol set in one time unit.
9. The communication apparatus of claim 8 , wherein resources other than resources in the resource set for control information in a bandwidth of the time unit are used for a physical downlink shared channel (PDSCH) transmission.
10. The communication apparatus of claim 7 , wherein the n th and (n+1) th downlink control channel candidates of the aggregation level are discontinuous in the control channel element set.
11. The communication apparatus of claim 7 , wherein each of the n th and (n+1) th downlink control channel candidates of the aggregation level consists of L consecutive control channel elements, and wherein L represents the aggregation level.
12. The communication apparatus of claim 7 , wherein the downlink control channel candidates include physical downlink control channel candidates, and the downlink control channel includes an PDCCH.
13. The method of claim 1 , wherein the spacing between the last resource of the n th downlink control channel candidate and the first resource of the (n+1) th downlink control channel candidate in the resource set further depends on a number of control channel elements in the resource set.
14. The method of claim 1 , wherein the received resource information is related to frequency resources.
15. The apparatus of claim 7 , wherein the spacing between the last resource of the n th downlink control channel candidate and the first resource of the (n+1) th downlink control channel candidate in the resource set further depends on a number of control channel elements in the resource set.
16. The apparatus of claim 7 , wherein the received resource information is related to frequency resources.