Method for receiving control information in orthogonal frequency division multiplexing system of mobile communication system

摘要

The present invention relates to receiving control information in an orthogonal frequency division multiplexing (OFDM) system of a mobile communication system. The present invention includes receiving information related to a number of OFDM symbols in a subframe for receiving first control information, receiving information related to a number of OFDM symbols in the subframe for receiving second control information, decoding the first control information according to the received information related to the number of OFDM symbols in the subframe for receiving the first control information, and decoding the second control information according to the received information related to the number of OFDM symbols in the subframe for receiving the second control information, wherein the number of OFDM symbols for receiving the first control information is less than or equal to the number of OFDM symbols for receiving the second control information.

主权项

id="REI-00004" date="20150519" 1. A method of transmitting downlink channels at a base station of an orthogonal frequency division multiplexing (OFDM) system, the method comprising:
transmitting first information indicating a size m of a first region through a broadcast channel, wherein the first region is defined by m OFDM symbol(s) starting from a beginning of a subframe and the first region is used for first channels that carry hybrid automatic repeat request (HARQ) ACK/NACKs; transmitting second information indicating a size n of a second region through a physical control format indicator channel (PCFICH), wherein the second region is defined by n OFDM symbol(s) starting from the beginning of the subframe and the second region is used for second channels that carry downlink control information; and transmitting the HARQ ACK/NACKs and the downlink control information through the first channels and second channels, respectively, wherein first resources for the first channels are identified from the first information, and second resources for the second channels are identified from remaining resources excluding the first resources within the second region, and wherein the second channels are physical downlink control channels (PDCCHs).