Method for transmitting control information in wireless communication system and device therefor
The present invention relates to a wireless communication system. In particular, the present invention relates to a method for receiving a downlink control channel in a wireless communication system, and a device therefore, more particularly, to the method and a device therefore, the method comprising the steps of: receiving an upper layer signal including a plurality of frequency resource sets; receiving a subframe carrying a plurality of downlink control channel candidates; and monitoring the plurality of control channel candidates in one specific frequency resource set from the plurality of frequency resource sets, for the downlink control channel, wherein the one specific frequency resource set is determined according to the type or the characteristic of the subframe.
1. A method for receiving signals by a communication device in a time division duplex (TDD) based wireless communication system, the method comprising:
receiving a downlink signal via a downlink period in a specific subframe comprising the downlink period, a guard period, and an uplink period,
wherein each length of the downlink period, the guard period, and the uplink period in the specific subframe is predetermined according to a subframe configuration of the specific subframe; and
selectively monitoring a physical downlink control channel (PDCCH) according to the subframe configuration of the specific subframe,
wherein when a normal cyclic prefix (CP) is configured in downlink, the PDCCH is not monitored for subframe configuration # 0 or # 5 ,
wherein the PDCCH is assigned within a resource region starting from an N th orthogonal frequency division multiplexing (OFDM) symbol in a subframe, and
wherein N is an integer of 2 or more.
2. The method of claim 1 , wherein when the normal CP is configured in downlink, the PDCCH is monitored for subframe configuration # 1 to # 4 or # 6 to # 8 .
3. The method of claim 1 , wherein when the normal CP is configured in downlink, each length of the downlink period and the uplink period in the specific subframe is given as follows:
Length of uplink
Subframe
Length of downlink period
period (the number of
Configuration
(the number of OFDM symbols)
OFDM symbols)
0
3
1
1
9
1
2
10
1
3
11
1
4
12
1
5
3
2
6
9
2
7
10
2
8
11
2
wherein one subframe comprises 14 OFDM symbols.
4. The method of claim 1 , wherein the monitoring includes decoding the PDCCH.
5. A communication device used for in a time division duplex (TDD) based wireless communication system, the communication device comprising:
a radio frequency (RF) unit; and
a processor, wherein the processor is configured to:
receive, through the RF unit, a downlink signal via a downlink period in a specific subframe comprising the downlink period, a guard period, and an uplink period,
wherein each length of the downlink period, the guard period, and the uplink period in the specific subframe is predetermined according to a subframe configuration of the specific subframe, and
selectively monitor a physical downlink control channel (PDCCH) according to the subframe configuration of the specific subframe,
wherein when a normal cyclic prefix (CP) is configured in downlink, the PDCCH is not monitored for subframe configuration # 0 or # 5 ,
wherein the PDCCH is assigned within a resource region starting from an N th orthogonal frequency division multiplexing (OFDM) symbol in a subframe, and
wherein N is an integer of 2 or more.
6. The communication device of claim 5 , wherein when the normal CP is configured in downlink, the PDCCH is monitored for subframe configuration # 1 to # 4 or # 6 to # 8 .
7. The communication device of claim 5 , wherein when the normal CP is configured in downlink, each length of the downlink period and the uplink period in the specific subframe is given as follows:
Length of uplink
Subframe
Length of downlink period
period (the number of
Configuration
(the number of OFDM symbols)
OFDM symbols)
0
3
1
1
9
1
2
10
1
3
11
1
4
12
1
5
3
2
6
9
2
7
10
2
8
11
2
wherein one subframe comprises 14 OFDM symbols.
8. The communication device of claim 5 , wherein the monitoring includes decoding the PDCCH.