Performance measurement

1. A controlling node for a cell in a cellular communications system, the controlling node comprising:

a measurer, implemented by a central processing unit executing computer-readable instructions stored on a non-transitory computer-readable storage medium, for measuring, to measure a performance indicator of the communication between the node and at least one user in the cell, wherein

the performance indicator is measured as the amount of data bits successfully transferred in data blocks in at least one direction, uplink and/or downlink, between the controlling node and at least one user during said defined amount of time, divided by the number of smallest physical resources in the system in terms of time and frequency which have been used for said successful transfer of the data bits during said defined amount of time;

an aggregator, implemented by the central processing unit executing computer-readable instructions stored on the non-transitory computer-readable storage medium, to aggregate the measured performance indicator for said at least one user over a defined amount of time; and

an excluder, implemented by the central processing unit executing computer-readable instructions stored on the non-transitory computer-readable storage medium, to exclude from said aggregated measurement one or more predefined combinations of one or more data blocks and one or more said smallest physical resources in the system.

2. The controlling node of claim 1 , wherein the one or more predefined combinations comprise a combination of one or more data blocks which have been scheduled for transmission by the controlling node prior to the controlling node receiving information on the quality of the channel on which said one or more data blocks are to be transmitted and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

3. The controlling node of claim 1 , wherein one or more predefined combination comprise a combination of one or more data blocks which have been scheduled by the controlling node for transmission from a transmit buffer with said transmit buffer only filled to a defined limit and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

4. The controlling node of claim 1 , wherein the one or more predefined combinations comprise a combination of one or more data blocks which have been scheduled by the controlling node for uplink transmission from a user who cannot utilize more than a certain amount of its output power and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

5. The controlling node of claim 1 , wherein the one or more predefined combinations comprise a combination of one or more data blocks which have been scheduled by the controlling node for transmission from a transmitting party which is either the controlling node or a user in the cell, said transmitting party having a coder-decoder whose efficiency is below a defined limit and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

6. The controlling node of claim 2 , arranged to carry out said scheduling of transmission and corresponding smallest physical units.

7. The controlling node of claim 2 , arranged to receive said scheduling of transmission and corresponding smallest physical units from another node in the system.

8. The controlling node of claim 1 , wherein the controlling node is an eNodeB in a Long-Term Evolution (LTE) system.

9. The controlling node of claim 8 , wherein said performance indicator is the Radio Link Bit Rate.

10. The controlling node of claim 1 , wherein the controlling node is a base station (BS) in a WiMax system.

11. The controlling node of claim 10 , wherein said performance indicator is the Physical Layer Data Rate.

12. A method for measuring a performance indicator of the communication between a controlling node of a cell in a cellular communications system and at least one user in the cell, the method comprising the steps of:

measuring and aggregating, by a central processing unit, the measured performance indicator for said at least one user over a defined amount of time, wherein the performance indicator is measured as the amount of data bits successfully transferred in data blocks in at least one direction, uplink and/or downlink, between the controlling node and the at least one user during said defined amount of time divided by the number of smallest physical resources in the system in terms of time and frequency which have been used for said successful transfer of the data bits during said defined amount of time, and

identifying, by the central processing unit, one or more predefined combinations of one or more data blocks wherein one or more said smallest physical resources in the system meeting said identified predefined combinations are excluded from said aggregated measurement.

13. The method of claim 12 , wherein the one or more predefined combinations comprise a combination of one or more data blocks which have been scheduled for transmission by the controlling node prior to the controlling node receiving information on the quality of the channel on which said one or more data blocks are to be transmitted, and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

14. The method of claim 12 , wherein the one or more predefined combination comprise a combination of one or more data blocks which have been scheduled by the controlling node for transmission from a transmit buffer with said transmit buffer only filled to a defined limit, and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

15. The method of claim 12 , wherein the one or more predefined combinations comprise a combination of one or more data blocks which have been scheduled by the controlling node for uplink transmission from a user who cannot utilize more than a certain amount of its output power, and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

16. The method of claim 12 , wherein the one or more predefined combinations comprise a combination of one or more data blocks which have been scheduled by the controlling node for transmission from a transmitting party which is either the controlling node or a user in the cell, said transmitting party having a coder-decoder whose efficiency is below a defined limit, and the said smallest physical units which have been scheduled by the controlling node for the transmission of those one or more data blocks.

17. The method of claim 16 , wherein said scheduling of transmission and corresponding smallest physical units is carried out by the controlling node.

18. The method of claim 16 , wherein said scheduling of transmission and corresponding smallest physical units from another node in the system is carried out by another node in the system and received by the controlling node.

19. The method of claim 18 , applied in an eNodeB in a Long-Term Evolution (LTE) system.

20. The method of claim 12 , according to which said data blocks are Long-Term Evolution (LTE) Transport Blocks.

21. The method of claim 12 , applied in a base station (BS) in a WiMax system.

22. The method of claim 21 , wherein said data blocks are WiMax PDUs, Protocol Data Units.