A mobile station operable in one of a plurality of Time Division Duplex, TDD, configurations in a communication system, the mobile station comprising: a receiver configured to receive a system information block, SIB, that includes a default TDD configuration defining uplink, downlink and special subframes within one or more radio frames, each radio frame including multiple subframes, and to receive downlink control information and a corresponding error detection code for the downlink control information, wherein the error detection code is scrambled by an identifier associated with the mobile station, processing circuitry, coupled to the receiver, which is configured to: in response to successfully decoding the downlink control information with the error detection code scrambled by the identifier, determine a TDD configuration, among the plurality of TDD configurations including the default TDD configuration, based on the downlink control information, wherein the downlink control information identifies a TDD configuration among the plurality of TDD configurations, determine at least one serving cell, to which to apply the determined TDD configuration, apply the determined TDD configuration to one or more radio frames n+1 up to n+x in the at least one serving cell, wherein n corresponds to a radio frame in which the downlink control information and the error detection code are received by the mobile station, and in response to expiration of the determined TDD configuration, apply the default TDD configuration to a radio frame n+1+x, where x is a positive integer, and wherein x is 1, 2 or 4, and the x is pre-defined and is a fixed amount of time until applying the default TDD configuration. a receiver configured to receive a system information block, SIB, that includes a default TDD configuration defining uplink, downlink and special subframes within one or more radio frames, each radio frame including multiple subframes, and to receive downlink control information and a corresponding error detection code for the downlink control information, wherein the error detection code is scrambled by an identifier associated with the mobile station, processing circuitry, coupled to the receiver, which is configured to: in response to successfully decoding the downlink control information with the error detection code scrambled by the identifier, determine a TDD configuration, among the plurality of TDD configurations including the default TDD configuration, based on the downlink control information, wherein the downlink control information identifies a TDD configuration among the plurality of TDD configurations, determine at least one serving cell, to which to apply the determined TDD configuration, apply the determined TDD configuration to one or more radio frames n+1 up to n+x in the at least one serving cell, wherein n corresponds to a radio frame in which the downlink control information and the error detection code are received by the mobile station, and in response to expiration of the determined TDD configuration, apply the default TDD configuration to a radio frame n+1+x, where x is a positive integer, and wherein x is 1, 2 or 4, and the x is pre-defined and is a fixed amount of time until applying the default TDD configuration. in response to successfully decoding the downlink control information with the error detection code scrambled by the identifier, determine a TDD configuration, among the plurality of TDD configurations including the default TDD configuration, based on the downlink control information, wherein the downlink control information identifies a TDD configuration among the plurality of TDD configurations, determine at least one serving cell, to which to apply the determined TDD configuration, apply the determined TDD configuration to one or more radio frames n+1 up to n+x in the at least one serving cell, wherein n corresponds to a radio frame in which the downlink control information and the error detection code are received by the mobile station, and in response to expiration of the determined TDD configuration, apply the default TDD configuration to a radio frame n+1+x, where x is a positive integer, and wherein x is 1, 2 or 4, and the x is pre-defined and is a fixed amount of time until applying the default TDD configuration.