Method and device for setting a control channel and a data channel in a wireless communication system
The present invention relates to a method for configuring a starting position of a control channel in a wireless communication system, and a terminal using the same. The method includes receiving duration information about a physical downlink control channel from the first orthogonal frequency division multiplexing (OFDM) symbol of a downlink subframe; and configuring a first OFDM symbol after OFDM symbols indicated by the duration information, as a starting point of an enhanced-physical downlink control channel. The downlink subframe includes a plurality of subcarriers in a frequency domain and 12 or 14 OFDM symbols in a time domain. The PDCCH includes the first N (N is a natural number of from 1 to 4) number of OFDM symbols of the downlink subframe. The duration information indicates the N number of OFDM symbols. The E-PDCCH comprises the starting point to the last OFDM symbol of the downlink subframe.
1. A method for configuring a starting position of channel, performed by a User Equipment, UE, in a time domain in a wireless communication system, the method comprising:
upon receiving position information informing of a starting position of an Enhanced Physical Downlink Control CHannel, EPDCCH, through a Radio Resource Control, RRC, message, determining, by the UE, a starting Orthogonal Frequency Division Multiplexing, OFDM, symbol of the EPDCCH based on the position information,
wherein if a Physical Downlink Shared Channel, PDSCH, is determined to have been assigned by the EPDCCH in a same serving cell, a starting OFDM symbol for the PDSCH corresponds to the starting OFDM symbol of the EPDCCH indicated by the received position information; and
when no position information informing of a starting position of the EPDCCH is received through RRC messaging, recognizing, by the UE, as the start point of the EPDCCH an OFDM symbol next to a Physical Downlink Control Channel, PDCCH, region checked through a Physical Control Format Indicator Channel, PCFICH.
2. The method of claim 1 , wherein the position information indicates an OFDM symbol in a subframe comprising a plurality of OFDM symbols.
3. The method of claim 1 , wherein the EPDCCH is demodulated by a Demodulation Reference Signal, DM RS.
4. The method of claim 1 , wherein if the PDSCH is assigned by the EPDCCH in a different serving cell, the starting OFDM symbol for the PDSCH is set by information other than the received position information.
5. A User Equipment UE, the UE comprising:
a Radio Frequency, RF, unit configured to transmit and receive radio signals; and
a processor connected to the RF unit, wherein the processor is configured to:
upon receiving position information informing of a starting position of an Enhanced Physical Downlink Control CHannel, EPDCCH, through a Radio Resource Control, RRC, message, t-e-determine a starting Orthogonal Frequency Division Multiplexing, OFDM, symbol of the EPDCCH based on the position information,
wherein if a Physical Downlink Shared Channel, PDSCH, is determined to have been assigned by the EPDCCH in a same serving cell, a starting OFDM symbol for the PDSCH corresponds to the starting OFDM symbol of the EPDCCH indicated by the received position information; and
when no position information informing of a starting position of the EPDCCH is received through RRC messaging, to recognize as the start point of an EPDCCH an OFDM symbol next to a Physical Downlink Control Channel, PDCCH, region checked through a Physical Control Format Indicator Channel, PCFICH.
6. The UE of claim 5 , wherein the position information indicates an OFDM symbol in a subframe comprising a plurality of OFDM symbols.
7. The UE of claim 5 , wherein the EPDCCH is demodulated by a Demodulation Reference Signal, DM RS.
8. The UE of claim 5 , wherein if the PDSCH is assigned by the EPDCCH in a different serving cell, the starting OFDM symbol for the PDSCH is set by information other than the received position information.