MULTI-CLUSTER UPLINK TRANSMISSION IN WIRELESS COMMUNICATION NETWORK

1 - 8 . (canceled)

9 . A method in a wireless communication device, the method comprising:

determining a difference in a power characteristic for at least two clusters, wherein each cluster includes at least one physical resource block;

determining a power reduction that is bounded by a maximum power reduction (“MPR”) limit that is dependent on a power attribute, wherein the power attribute is the difference in the power characteristic for the at least two clusters;

determining P CMAX based on the power reduction; and

based on P CMAX , determining an uplink transmit power and a power headroom.

10 . The method of claim 9 wherein the MPR limit is based on a piecewise linear function.

11 . (canceled)

12 . The method of claim 9 wherein the MPR limit is computed based on the equation:

MPR=α 0 ( R A ,R ΔP )−α 1 ( R A ,R ΔP ) A−α 2 ( R A ,R ΔP )Δ P,

for A∈R A and ΔP∈R ΔP

where:

A is an allocation ratio of the clusters;

ΔP is a difference in the power characteristic for the two clusters;

R A is a range of values that A can take;

R ΔP is a range of values ΔP can take; and

{α j (R A ,R ΔP )} j=0,1,2 are non-negative real numbers that depend on the range of A and ΔP.

13 . The method of claim 9 wherein at least one of the at least two clusters is for Physical Uplink Control Channel transmission and another of the at least two clusters is for Physical Uplink Shared Channel transmission.

14 . The method of claim 9 wherein the at least two clusters are for Physical Uplink Shared Channel transmission.

15 . The method of claim 9 wherein the at least two clusters are for Sounding Reference Signal transmission.

16 . The method of claim 9 wherein the at least two clusters are for Demodulation Reference Signal transmission.

17 . A method in a wireless communication device, the method comprising:

determining a first attribute and a second attribute based on characteristics of at least two clusters, wherein each cluster includes at least one resource block, and wherein the first attribute is different than the second attribute;

determining a first power reduction value as function of the first attribute;

determining a second power reduction value as function of the second attribute;

determining an maximum power reduction (“MPR”) limit based on the first power reduction value and second power reduction value;

determining a power reduction that is bounded by the MPR limit;

determining P CMAX based on the power reduction; and

based on P CMAX , determining an uplink transmit power and a power headroom.

18 . The method of claim 17 wherein the characteristics of at least two clusters are selected from a group consisting of: a size of the at least two clusters, a spectral distance between the at least two clusters, a distance between outermost clusters of the at least two clusters to an edge of a carrier for each of the outermost clusters, a full span in a frequency domain of the at least two clusters, an absolute value of the size difference between the cluster at the left-most edge and the right-most edge of the configured uplink bandwidth, and a difference in a power characteristic for the at least two clusters.

19 . The method of claim 17 wherein the first attribute and the second attribute each include one at least one of the following characteristics: a size of the at least two clusters, a spectral distance between the at least two clusters, a distance between clusters to an edge of a carrier for the at least two clusters, a full span in a frequency domain of the at least two clusters, an absolute value of the size difference between the cluster at the left-most edge and the right-most edge of the configured uplink bandwidth, and a difference in a power characteristic for the at least two clusters.

20 . The method of claim 17 wherein at least one of the at least two clusters is for Physical Uplink Control Channel transmission and another of the at least two clusters is for Physical Uplink Shared Channel transmission.

21 . The method of claim 17 wherein the at least two clusters are for Physical Uplink Shared Channel transmission.

22 . The method of claim 17 wherein determining the MPR limit includes equating the MPR limit to a lower of the first and second power reduction values.

23 . The method of claim 17 wherein the at least two clusters are for Sounding Reference Signal transmission.

24 . The method of claim 17 wherein the at least two clusters are for Demodulation Reference Signal transmission.