CONTROL SIGNAL TRANSCEIVING METHOD IN A RADIO CONNECTION SYSTEM, CAPABLE OF SUPPORTING CARRIER AGGREGATION WHICH EXPANDS A COMMON SEARCH SPACE IN ORDER TO EFFECTIVELY TRANSMIT AND RECEIVE CONTROL INFORMATION

摘要

PURPOSE: A control signal transceiving method in a radio connection system is provided to effectively distribute and use a CSS[Common Search Space] for each of terminals in case a LTE terminal and a LTE-A terminal coexist.;CONSTITUTION: A terminal which enters a base station for the first time or a terminal to connect to the base station by turning on the power performs initial cell search(S1110). The base station transmits a unicast message to each terminal or transmits a broadcast message by upper layer signaling in order to inform LTE-A terminals within a self-domain about an expanded CCS domain(S1120). LTE terminals perform BD[Blind Decoding] about a CSS and a USS[User equipment specific Search Space] which are defined in a LTE system(S1130). The LTE terminals obtain DCI[Downlink Control Information] by receiving a PDCCH[Physical Downlink Control Channel] which is transmitted from the base station by performing BD(S1140).;COPYRIGHT KIPO 2013;[Reference numerals] (S1110) Initial cell search; (S1120) Upper layer signaling; (S1130) BD execution; (S1140) PDCCH signal