Patent ID: 8717998

Claim:
Apparatus for use in a wireless communications network, the apparatus comprising: a non-transitory memory storing a set of instructions; and a processor executing the set of instructions to perform operations comprising: determining a first and second amount of data to be transmitted for an upcoming transmission period for a first data stream and a second data stream, respectively; and when the amount of data to be transmitted for the second stream is less than, by a predetermined threshold, the amount of data to be transmitted for the first stream during the upcoming transmission period, then: determining a first number of subcarriers needed to carry the data of the first data stream during the transmission period; determining a second number of subcarriers needed to carry the data of the second data stream during the transmission period, the second number being a subset of the first number; and using the first number of the subcarriers for transmission of the first stream, and the second number of subcarriers for transmission of the second data stream, respectively; otherwise: determining an equal number of subcarriers needed to carry the data of the first stream and the data of the second stream during the transmission period; and using the equal number of subcarriers for transmission of the first data stream and for transmission of the second data stream.