Method for selecting an enhanced transport format combination based on determined power consumption

1. A method of selecting an enhanced transport format combination used for maximizing power utilization of and power limitation avoidance in a communication network system comprising a communication network entity communicating with a plurality of user equipments on uplink and downlink channels over a radio interface, comprising:

determining a power consumption for an acknowledgement negative acknowledgement transmission and a channel quality indicator transmission on an uplink channel during an enhanced dedicated channel transmission;

using said determined power consumption for predicting available power for each transmission slot of said enhanced dedicated channel transmission;

determining available signal to interference-plus-noise ratio of each transmission slot based on said predicted available power for each transmission slot;

converting said determined available signal to interference-plus-noise ratio of each transmission slot to symbol information of each transmission slot;

determining a received block information for whole transmission time interval of said enhanced dedicated channel transmission based on said symbol information of each slot;

converting said determined receive block information to an available effective signal to interference-plus-noise ratio for said whole transmission time interval of said enhanced dedicated channel transmission;

determining an available effective power offset value based on said available effective signal to interference-plus-noise ratio; and

selecting said enhanced transport format combination based on said determined available effective power offset value.

2. The method of claim 1 , further comprising:

using said determined power consumption for predicting a high speed dedicated physical control channel power consumption during a whole transmission time interval of said enhanced dedicated channel transmission;

determining an available power for said enhanced dedicated channel transmission using said predicted high speed dedicated physical control channel power consumption; and

selecting said enhanced transport format combination based on said determined available power for said enhanced dedicated channel transmission.

3. The method of claim 1 , wherein said acknowledgement/negative acknowledgement transmission power consumption is determined based on a high speed shared control channel reception.

4. The method of claim 1 , wherein said channel quality indicator power consumption is determined by using a pre-determined channel quality indicator feedback cycle.

5. An arrangement for selecting an enhanced transport format combination used for maximizing power utilization efficiency and power limitation avoidance in a communication network system comprising a communication network entity communicating with a plurality of user equipments on uplink and downlink channels over a radio interface, comprising:

means for determining a power consumption for an acknowledgement/negative acknowledgement transmission and a channel quality indicator transmission on an uplink channel during an enhanced dedicated channel transmission;

means for using said determined power consumption for predicting available power for each transmission slot of said enhanced dedicated channel transmission;

means for determining available signal to interference-plus-noise ratio of each transmission slot based on said predicted available power for each transmission slot;

means for converting said determined available signal to interference-plus-noise ratio of each transmission slot to symbol information of each transmission slot;

means for determining a received block information for whole transmission time interval of said enhanced dedicated channel transmission based on said symbol information of each slot;

means for convening said determined receive block information to an available effective signal to interference-plus-noise ratio for said whole transmission time interval of said enhanced dedicated channel transmission;

means for determining an available effective power offset value based on said available effective signal to interference-plus-noise ratio;

means for selecting said enhanced transport format combination based on said determined available effective power offset value.

6. The arrangement of claim 5 , further comprising:

means for using said determined power consumption for predicting a high speed dedicated physical control channel power consumption during a whole transmission time interval of said enhanced dedicated channel transmission;

means for determining an available power for said enhanced dedicated channel transmission using said predicted high speed dedicated physical control channel power consumption; and

means for selecting said enhanced transport format combination based on said determined available power for said enhanced dedicated channel transmission.

7. The arrangement of claim 5 , wherein said means for determining an acknowledgement/negative acknowledgement transmission power consumption is arranged to determine said acknowledgement/negative acknowledgement transmission power consumption based on a high speed shared control channel reception.

8. The arrangement of claim 5 , wherein said means for determining a channel quality indicator power consumption is arranged to determine said channel quality indicator power consumption by using a pre-determined channel quality indicator feedback cycle.