Abstract:
A method and an apparatus for CQI(Channel Quality Indicator) control for adaptive modulation and coding in an OFDMA system improve capacity and fairness of the OFDMA system by variably controlling a size of a sub carrier group. A valid cluster is selected among clusters including one bin or more which are a plurality of subcarrier groups according to a predetermined standard(S335). An average CINR(Carrier-to-Interference-plus-Noise Ratio) of the valid cluster is calculated(S337). The optimum MCS level of each valid cluster is determined based on the average CINR value(S353). The optimum cluster among the valid clusters is determined based on the optimum MCS level(S373).
Abstract:
PURPOSE: A relay terminal for cell information exchange between adjacent base stations in a cellular system is provided to directly transmit operation information and coexistence information to cells, thereby effectively controlling multi cells. CONSTITUTION: Each transceiving device comprises the following units. An address filter(905) classifies cell information. A mutual work function execution unit transmits the cell information to another transceiving device through an interface. The mutual work function execution unit receives cell information which sets a base station of the cell information as a transmission address from another transceiving device.
Abstract:
비면허대역을지원하는통신네트워크를위한스케쥴링방법이개시된다. UE의동작방법은비면허대역에서복수의서브프레임들을포함하는비면허대역버스트를기지국으로부터수신하는단계, 상기비면허대역버스트로부터제어정보를획득하는단계, 및상기제어정보를기반으로상기비면허대역버스트로부터데이터를획득하는단계를포함한다. 따라서, 통신네트워크의성능이향상될수 있다.