Patent ID: 8422583

Claim:
An apparatus, comprising: a transceiver to transmit and receive signals to and from a fixed station; and a controller coupled to the transceiver to control the transceiver to transmit to the fixed station a first channel quality indicator (CQI) that corresponds to a first modulation level to be used by the fixed station to transmit first signals, and to control the transceiver to transmit to the fixed station a differential indicator that comprises two or less bits to differentially indicate a second CQI relative to the first CQI, wherein the second CQI corresponds to a second modulation level to be used by the fixed station to transmit second signals, wherein a plurality of bits used to transmit the second CQI is less than a number of bits used to transmit the first CQI, and wherein the first modulation level and the second modulation level are selected from the group consisting of quadrature phase shift keying (QPSK), 16 quadrature amplitude modulation (QAM), and 64 QAM.