IP Library Granted Patent US 7,818,023
Granted Patent B2
US 7,818,023 · App. 11/861,471 · Granted Oct 19, 2010

Power allocation scheme

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Quick Facts
Patent No.
US 7,818,023
App. No.
11/861,471
Granted
Oct 19, 2010
Kind
B2
Abstract

Systems and methodologies are described that facilitate and effectuate power allocation schemes that reuse power allocation patterns amongst different carriers for sectors in the same cell and uses different power allocation patterns between cells. The frequency reuse scheme generates power allocation patterns, selects one of the generated power allocation patterns for use among at least two carriers of at least two sectors in a cell, and employs a second disparate power allocation pattern for use between at two cells.

Claims (66)

1. A method of operating a first wireless communications device comprising:

using a template pattern as a first power allocation pattern on a plurality of different carriers;

receiving information indicating a dynamically determined power allocation pattern which was dynamically determined based on load information within a first cell in which said wireless communications device is located and load information from neighboring cells;

changing said first power allocation pattern from said template pattern to said dynamically determined power allocation pattern;

transmitting signals in a first carrier of the plurality of carriers, where a total transmission power of the first carrier is set to be a first transmission power value as a function of the dynamically determined power allocation pattern; and

transmitting signals in a second carrier of the plurality of carriers, where a total transmission power of the second carrier is set to be a second transmission power value as a function of the dynamically determined power allocation pattern, the second transmission power value being different from the first transmission power value.

2. The method of claim 1 , where the first transmission power value is at least 3 dB greater than the second transmission power value.

3. A method of operating a base station device serving a plurality of sectors in a first cell, the method further comprising:

determining a first power allocation pattern on a plurality of different carriers;

transmitting signals in a first carrier of the plurality of carriers, wherein transmitting signals in a first carrier includes:

i) transmitting signals to a first sector of the plurality of sectors in the first carrier, where a total transmission power of the first carrier to the first sector is set to be a first transmission power value; and

ii) transmitting signals to a second sector of the plurality of sectors in the first carrier, where a total transmission power of the first carrier to the second sector is set to be the first transmission power value; and

transmitting signals in a second carrier of the plurality of carriers, where a total transmission power of the second carrier is set to be a second transmission power value as a function of the first power allocation pattern, the second transmission power value being different from the first transmission power value.

4. The method of claim 3 ,

wherein transmitting signals in the second carrier of the plurality of carriers includes transmitting signals to the first sector of the plurality of sectors in the second carrier, where the total transmission power of the second carrier to the first sector is set to be the second transmission power value, the method further comprising:

transmitting signals to the second sector of the plurality of sectors in the second carrier, where the total transmission power of the second carrier to the second sector is set to be the second transmission power value.

5. The method of claim 4 , where the first and the second sectors of the cell are geographically adjacent to each other.

6. The method of claim 3 , further comprising

operating a second base station device in a second cell adjacent to said first cell, where the second base station determines a second power allocation pattern on the plurality of carriers, transmits signals in the first carrier to a sector with the total transmission power of the first carrier to the sector being set to be a third transmission power value as a function of the second power allocation pattern, and transmits signals in the second carrier to the sector with the total transmission power of the second carrier to the sector being set to be a fourth transmission power value as a function of the second power allocation pattern, the fourth transmission power value being different from the third transmission power value.

7. The method of claim 6 , where the third transmission power value is equal to the second transmission power value and the fourth transmission power value is equal to the first transmission power value.

8. The method of claim 3 , wherein a second base station serving a plurality of sectors in a second cell, transmits signals to a first sector of the second cell in the first carrier with the total transmission power of the first carrier to the first sector of the second cell being set to be the second transmission power value, transmits signals to a second sector of the second cell in the first carrier with the total transmission power of the first carrier to the second sector of the second cell being set to be the second transmission power value, transmits signals to the first sector of the second cell in the second carrier with the total transmission power of the second carrier to the first sector of the second cell being set to be the first transmission power value, and transmits signals to the second sector of the second cell in the second carrier with the total transmission power of the second carrier to the second sector of the second cell being set to be the first transmission power value.

9. An apparatus operable in a wireless communication system, comprising:

means for evaluating signal to noise ratios of transceived signals emanating from a portable means for transceiving;

means for identifying an appropriate sector and an appropriate carrier with a total transmission power set to be a power level, determined by a power allocation pattern, based at least on the signal to noise ratios; and

means for allocating signals emanating from the portable means for transceiving to a power level such that the total transmission power within the identified sector and the identified carrier is less than or equal to the associated power level in the power allocation pattern.

10. The apparatus of claim 9 , wherein the means for allocating signals emanating from the portable means for transceiving is located at a distant transmitting boundary to a carrier utilizing most power.

11. The apparatus of claim 9 , wherein the means for allocating signals emanating from the portable means for transceiving is positioned in close proximity to means for evaluating.

12. A base station serving a plurality of sectors in a first cell, said base station being configured to execute a method comprising:

determining a first power allocation pattern on a plurality of different carriers;

transmitting signals in a first carrier of the plurality of carriers, wherein transmitting signals in a first carrier includes:

i) transmitting signals to a first sector of the plurality of sectors in the first carrier, where a total transmission power of the first carrier to the first sector is set to be a first transmission power value; and

ii) transmitting signals to a second sector of the plurality of sectors in the first carrier, where a total transmission power of the first carrier to the second sector is set to be the first transmission power value; and

transmitting signals in a second carrier of the plurality of carriers, where a total transmission power of the second carrier is set to be a second transmission power value as a function of the first power allocation pattern, the second transmission power value being different from the first transmission power value.

13. A non-transitory machine-readable medium having stored thereon instructions which, when executed by a machine, cause the machine to perform operations including:

evaluating signal to noise ratios of transceived signals emanating from a portable device;

identifying an appropriate sector in and an appropriate carrier with a total transmission power set to be a power level, determined by a power allocation pattern, based at least on the signal to noise ratios; and

allocating signals emanating from the portable device to a power level such that the total transmission power within the identified sector and the identified carrier is less than or equal to the associated power level in the power allocation pattern.

14. The non-transitory machine-readable medium of claim 13 , wherein the portable device is located at a distant transmitting boundary to a carrier utilizing most power.

15. The non-transitory machine-readable medium of claim 13 , wherein the portable device positioned in close proximity to a carrier consuming least power.

16. An apparatus operable in a wireless communication system, the apparatus comprising:

a processor, configured to:

use a template pattern as a first power allocation pattern on a plurality of different carriers;

receive information indicating a dynamically determined power allocation pattern which was dynamically determined based on load information within a cell in which said wireless communications device is located and load information from neighboring cells;

change said first power allocation pattern from said template pattern to said dynamically determined power allocation pattern;

transmit signals in a first carrier of the plurality of carriers, a total transmission power of the first carrier set to a first transmission power value based on the dynamically determined power allocation pattern; and

transmit signals in a second carrier of the plurality of carriers, a total transmission power of the second carrier set to a second transmission power value based at least on the dynamically determined power allocation pattern, the second transmission power value distinct from the first transmission power value; and

a memory coupled to the processor for storing data.

17. The apparatus of claim 16 , the first transmission power value is at least 3 dB greater than the second transmission power value.

18. A base station device serving a plurality of sectors in a first cell, said base station device comprising:

a processor configured to:

determine a first power allocation pattern on a plurality of different carriers;

transmit signals in a first carrier of the plurality of carriers, in transmitting signals in a first carrier said processor being configured to

(i) transmit signals to a first sector of the plurality of sectors in the first carrier, a total transmission power of the first carrier to the first sector being set to a first transmission power value, and

(ii) transmit signals to a second sector of the plurality of sectors in the first carrier, a total transmission power of the first carrier to the second sector being set to the first transmission power value;

transmit signals in a second carrier of the plurality of carriers, where a total transmission power of the second carrier is set to be a second transmission power value as a function of the first power allocation pattern, the second transmission power value being different from the first transmission power value; and

a memory coupled to the processor for storing data.

19. The base station of claim 18 ,

wherein in transmitting signals in the second carrier of the plurality of carriers the processor is further configured to transmit signals to the first sector of the plurality of sectors in the second carrier, the total transmission power of the second carrier to the first sector being set to the second power transmission power value; and

wherein said processor is further configured to transmit signals to the second sector of the plurality of sectors in the second carrier, the total transmission power of the second carrier to the second sector being set to the second transmission power value.

20. The base station of claim 19 , wherein the first and the second sectors are geographically adjacent to each other.

21. A base station serving a plurality of sectors in a first cell, comprising:

means for using a template pattern as a first power allocation pattern on a plurality of different carriers;

means for receiving information indicating a dynamically determined power allocation pattern which was dynamically determined based on load information within a first cell in which said wireless communications device is located and load information from neighboring cells;

means for changing said first power allocation pattern from said template pattern to said dynamically determined power allocation pattern;

means for transmitting signals in a first carrier of the plurality of carriers, a total transmission power of the first carrier being set to be a first transmission power value as a function of the dynamically determined power allocation pattern; and

means for transmitting signals in a second carrier of the plurality of carriers, a total transmission power of the second carrier being set to be a second transmission power value as a function of the dynamically determined power allocation pattern, the second transmission power value being different from the first transmission power value.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 10, 2007
From: LI, JUNYI; DAS, ARNAB; WU, XINZHOU
To: QUALCOMM INCORPORATED
Reel/Frame 020222/0167 →