US 9,872,299 B1Granted

Optimized transmit-power allocation in multi-carrier transmission

AssigneeMarvell International Ltd.

InventorsOfir Mahazri, Amit Wix

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Abstract

A method includes, in a wireless communication terminal that transmits a data channel over multiple component carriers, dividing a total transmit-power allocation specified for the data channel into carrier-specific power allocations for the respective component carriers. Block sizes, which specify respective numbers of bits for transmitting the data channel, are initially derived for one or more of the component carriers from a quantized set of block sizes, such that the respective carrier-specific power allocations are not exceeded. For at least a selected component carrier, an extended block size is selected from the quantized set. The extended block size exceeds a carrier-specific power allocation assigned to the selected component carrier, but together with the block sizes of the other component carriers does not exceed the total transmit-power allocation. The data channel is transmitted over the component carriers using the selected block sizes, including the extended block size.

Claims12

Dependent claims

A method, comprising:

in a wireless communication terminal that transmits a data channel over multiple component carriers, comprising at least three component carriers, dividing a total transmit-power allocation specified for the data channel into carrier-specific power allocations for the respective component carriers;
initially deriving for one or more of the component carriers respective block sizes that specify numbers of bits for transmitting the data channel, from a quantized set of block sizes, such that the respective carrier-specific power allocations are not exceeded;
for at least a selected component carrier, selecting from the quantized set an extended block size that exceeds a carrier-specific power allocation assigned to the selected component carrier, but together with the block sizes of the other component carriers does not exceed the total transmit-power allocation, by:
calculating a total quantization loss between the total power allocation and a total transmit power of the multiple component carriers when using the initially-derived block sizes;
and
selecting the extended block size based on the total quantization loss;
and
transmitting the data channel over the component carriers using the selected block sizes, including the extended block size.

5 more elements

Apparatus, comprising:

a transmitter, configured to transmit a data channel over multiple component carriers, comprising at least three component carriers;
and
a processor, configured to:
divide a total transmit-power allocation specified for the data channel into carrier-specific power allocations for the respective component carriers;
initially derive for one or more of the component carriers respective block sizes that specify numbers of bits for transmitting the data channel, from a quantized set of block sizes, such that the respective carrier-specific power allocations are not exceeded;
select from the quantized set, for at least a selected component carrier, an extended block size that exceeds a carrier-specific power allocation assigned to the selected component carrier, but together with the block sizes of the other component carriers does not exceed the total transmit-power allocation, by:
calculating a total quantization loss between the total power allocation and a total transmit power of the multiple component carriers when using the initially-derived block sizes;
and
selecting the extended block size based on the total quantization loss;
and
configure the transmitter to transmit the data channel over the component carriers using the selected block sizes, including the extended block size.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/957,622Filed 3 Dec 2015 · us provisional application
Priority: 9 Dec 2014
Granted: 16 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 52/367
With a discrete range or set of values, e.g. step size, ramping or offsets: power values between minimum and maximum limits, e.g. dynamic range
H04L 1/0007
By adapting the transmission format: by modifying the frame length
H04L 5/001
The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
H04W 52/346
TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading: distributing total power among…