Patent ID: 7411931

Claim:
A terminal comprising: at least one radio transceiver including a plurality of radio receivers and at least one transmitter, each radio receiver including an antenna which receives a plurality of encoded data streams and a detecting function which decodes the plurality of encoded data streams into decoded data; and a terminal controller which controls the at least one radio transceiver, wherein a data transmission system includes a station which transmits the plurality of encoded data streams using a plurality antennas to the terminal and a station controller which controls the station, and wherein in response to a transmission from the station that the terminal is to operate at least one of the radio receivers, in at least one frequency band not used to receive the plurality of encoded data streams during at least one identified data frame therein, to measure a radio indicator of the at least one frequency band not used to receive the plurality of encoded data streams, the terminal controller causes at least one of the radio receivers to be tuned to the at least one frequency band during the at least one identified data frame, to make measurements therein, and to transmit the measurements with the at least one transmitter of the at least one radio transceiver to the station and to adjust handling of feedback sent in an uplink direction accordingly to correspond to a resulting plurality of data streams less than the plurality of data streams prior to a resulting non-multiple input multiple output transmission, wherein the feedback comprises said measurement of said radio indicator sent from the terminal.