Multi-level control for measurement reports
View Patent ↗The present invention relates to a method, terminal device, network element, system and computer program product for handling measurement reports in a communication network. At least two different levels of measurements reports ( 15 ) are provided, wherein each of the at least two levels corresponds to a different amount of resource blocks on which the measurement reports are based. The level of a received measurement report ( 15 ) is detected and a compensation offset is selected based on the detection result and applied to the measurement report. Thereby, measurement errors and biases of the measurement reports can be dynamically corrected in multi-level reporting schemes.
1. A method, comprising:
receiving, at a network element, at least two different levels of measurement reports from a terminal device, each of said at least two different levels corresponding to a different amount of resource blocks on which said measurement reports are based;
detecting, at the network element, the level of a received measurement report;
providing a plurality of different, compensation offset values for said at least two different levels of said measurement reports;
applying to said detected level of said received measurement report, by the network element, a compensation offset value selected based on a result of the detecting; and
dividing a complete measurement report into sub-reports covering different ones of said resource blocks, wherein each of said at least two different levels covers a different number of said sub-reports.
2. A method according to claim 1 , wherein said measurement report is a channel quality report.
3. A method according to claim 1 , wherein said resource blocks correspond to groups of sub-carriers of an orthogonal frequency division multiplexing transmission.
4. A method according to claim 1 , further comprising using at least one of said measurement reports for making at least one of a scheduling and link adaptation decision.
5. A method according to claim 1 , further comprising using said compensation offset for mapping said measurement report into a signal-to-noise ratio.
6. A method according to claim 1 , wherein the compensation offset is a time-varying compensation offset.
7. An apparatus, comprising:
a detector configured to detect at least two different levels of measurement reports received from a terminal device of a communication network, each of said at least two levels corresponding to a different amount of resource blocks on which said measurement report is based; and
a compensator configured to apply to each level of said received measurement reports a compensation offset value selected in response to the detecting,
wherein a plurality of different compensation offset values is provided for said at least two different levels of said measurement reports, and
wherein the compensator is further configured to divide a complete measurement report into sub-reports covering different ones of said resource blocks, wherein each of said at least two different levels covers a different number of said sub-reports.
8. An apparatus according to claim 7 , wherein said measurement reports are channel quality reports.
9. An apparatus according to claim 7 , wherein said resource blocks correspond to groups of sub-carriers of an orthogonal frequency division multiplexing transmission.
10. An apparatus according to claim 7 , wherein said compensator is further configured to use said measurement report to make at least one of a scheduling and link adaptation decision.
11. An apparatus according to claim 7 , wherein said compensator is further configured to use said compensation offset for mapping said measurement report into a signal-to-noise ratio.
12. An apparatus according to claim 7 , further comprising:
a memory configured to store a plurality of different compensation offset values for said at least two different levels of said measurement reports.
13. An apparatus according to claim 7 , wherein said apparatus is a base station device.
14. A system, comprising:
a network element; and
a terminal device configured to transmit at least two different levels of measurement reports,
wherein the network element comprises
a detector configured to detect at least two different levels of measurement reports received from a terminal device of a communication network, each of said at least two levels corresponding to a different amount of resource blocks on which said measurement reports are based; and
a compensator configured to apply to each level of said received measurement reports a compensation offset value selected in response to the detecting,
wherein a plurality of different compensation offset values is provided for said at least two different levels of said measurement reports, and
wherein the compensator is further configured to divide a complete measurement report into sub-reports covering different ones of said resource blocks, wherein each of said at least two different levels covers a different number of said sub-reports.
15. A computer program embodied on a non-transitory machine-readable medium, said computer program configured to control a computer device to:
provide at least two different levels of measurement reports received from a terminal device of a communication network, each of said at least two different levels corresponding to a different amount of resource blocks on which said measurement reports are based;
detect the levels of received measurement reports;
apply to each level of said received measurement reports a compensation offset value selected based on the detected level; and
divide a complete measurement report into sub-reports covering different ones of said resource blocks, wherein each of said at least two different levels covers a different number of said sub-reports,
wherein a plurality of different compensation offset values is provided for said at least two different levels of said measurement reports.
16. An apparatus, comprising:
detecting means for detecting at least two different levels of measurement reports received from a terminal device of a communication network, said levels indicating amounts of resource blocks on which said measurement report is based; and
compensation means for applying to said received measurement report a compensation offset value selected in response to the detecting,
wherein a plurality of different compensation offset values is provided for said at least two different levels of said measurement reports, and
wherein the compensation means is further for dividing a complete measurement report into sub-reports covering different ones of said resource blocks, wherein each of said at least two different levels covers a different number of said sub-reports.