Communication Method and a Radio System

The method of claim 9, the method further comprising dividing the number of sub-channels of the received signal by two.

A communication method of an orthogonal frequency division multiple access radio system, wherein the number of sub-channels for a transmission of a user terminal has been decreased, the method comprising

• increasing the number of sub-channels for a transmission of a user terminal, if the transmission power of the signal is other than the maximum, for canceling at least partly the limitation concerning the number of sub-channels.

A communication method of an orthogonal frequency division multiple access radio system, wherein the number of sub-channels for a transmission of a user terminal has been set to a decreased level, the method comprising

• increasing the number of sub-channels for a transmission of a user terminal if the protection against interference of the signal differs from the maximum for canceling at least partly the limitation concerning the number of the sub-channels.

An orthogonal frequency division multiple access radio system, the radio system comprising a network system and a user terminal, wherein the radio system is in a state where the number of sub-channels for a transmission of the user terminal has been decreased by the network system, the network system being configured to increase the number of sub-channels for a transmission of the user terminal if the transmission power of the signal is other than the maximum for canceling at least partly the limitation concerning the number of the sub-channels.

An orthogonal frequency division multiple access radio system, the radio system comprising a network system and a user terminal, wherein the radio system is in a state where the number of sub-channels for a transmission of the user terminal has been decreased by the network system, the network system being configured to increase the

• number of sub-channels for a transmission of the user terminal if the protection against interference of the signal is other than the maximum for canceling at least partly the limitation concerning the number of the sub-channels.

A network element in an orthogonal frequency division multiple access radio system, the network element comprising

• a meter configured to measure a quality of a received signal transmitted by a user terminal and to perform at least one comparison operation including a comparison operation with the measured quality;
• and
• an allocator of radio resources configured to decrease the number of sub-channels for a transmission of the user terminal if each comparison results in a value at a predetermined threshold or in a predetermined range, the network element being configured to transmit a control signal to the user terminal about a decrease in the number of sub-channels for the transmission of the user terminal.

A user terminal of an orthogonal frequency division multiple access radio system, the user terminal comprising a converter,

• the user terminal configured to receive a control signal from a network system of the radio system about a decrease in the number of sub-channels for a transmission of the user terminal, the converter in the user terminal being configured to decrease the number of sub-channels for the transmission in response to the control signal, the user terminal being configured to transmit with the decreased number of sub-channels.