CONFIGURATION OF UPLINK OPEN LOOP POWER CONTROL PARAMETERS

• US 20150319702A1
• Filed: 05/02/2014
• Published: 11/05/2015
• Est. Priority Date: 05/02/2014
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Patel, Chirag Sureshbhai, Chande, Vinay, Yu, Liwen, Kadous, Tamer Adel
• Application Number:
  US14/268,173
• Publication Number:
  US 20150319702A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/243 taking into account interferences

Abstract

A method or apparatus for configuring OLPC parameters for uplink communications in a cellular wireless network includes determining an estimated number of neighbor cells deployed within radio range of a cell, and configuring OLPC parameters for uplink communications, based on the estimated number of neighbor cells. Determining the estimated number of neighbor cells may include measuring respective signal strengths of the neighbor cells using network listen functionality. At least two OLPC intermediate parameters P_o and α may be selected from a data table, based on the estimated number of neighbor cells. A path loss statistic may be determined, based on UE measurement reports including path losses of UEs to itself and other cells. The OLPC parameters may be selected based on the path loss statistic and P_o and α, and/or adapted based on at least one of UE power headroom reports or overload indicators received from the neighbor cells.

Claims

1. A method for configuring open loop power control (OLPC) parameters for uplink communications in a cellular wireless network, the method comprising:

determining, by a cell, an estimated number of neighbor cells deployed within radio range of the cell; and

configuring OLPC parameters for uplink communications, based on the estimated number of neighbor cells.

2. The method of claim 1, wherein determining the estimated number of neighbor cells comprises measuring respective signal strengths of the neighbor cells using a network listen functionality.

3. The method of claim 1, further comprising selecting at least two OLPC intermediate parameters P_o and α

from a data table, based on the estimated number of neighbor cells.

4. The method of claim 3, further comprising determining a path loss statistic based on one or more UE measurement reports each indicating a path loss of a UE to at least one of the cell or one of the neighbor cells.

5. The method of claim 4, further comprising selecting the OLPC parameters further based on the path loss statistic and the OLPC intermediate parameters P_o and α

.

6. The method of claim 1, further comprising adapting the OLPC parameters based on at least one of a UE power headroom report or overload indicator received from the neighbor cells.

7. The method of claim 1, further comprising determining whether to change an OLPC parameter based at least in part on a change in an estimated deployment density of the neighbor cells in a geographical neighborhood of the cell.

8. The method of claim 1, wherein the cell is a small cell.

9. The method of claim 1, wherein the neighbor cells comprise small cells.

10. An apparatus for wireless communication, the apparatus comprising:

means for determining an estimated number of neighbor cells deployed within radio range of a cell; and

means for configuring OLPC parameters for uplink communications, based on the estimated number of neighbor cells.

11. An apparatus for wireless communication, comprising:

at least one processor configured for determining an estimated number of neighbor cells deployed within radio range of a cell, and configuring OLPC parameters for uplink communications, based on the estimated number of neighbor cells; and

a memory coupled to the at least one processor for storing data.

12. The apparatus of claim 11, wherein the processor is further configured for determining the estimated number of neighbor cells at least in part by measuring respective signal strengths of the neighbor cells using a network listen functionality.

13. The apparatus of claim 11, wherein the processor is further configured for selecting at least two OLPC intermediate parameters P_o and α

from a data table, based on the estimated number of neighbor cells.

14. The apparatus of claim 13, wherein the processor is further configured for determining a path loss statistic based on one or more UE measurement reports each indicating a path loss of a UE to at least one of the cell or one of the neighbor cells.

15. The apparatus of claim 14, wherein the processor is further configured for selecting the OLPC parameters further based on the path loss statistic and the OLPC intermediate parameters P_o and α

.

16. The apparatus of claim 11, wherein the processor is further configured for adapting the OLPC parameters based on at least one of a UE power headroom report or overload indicator received from the neighbor cells.

17. The apparatus of claim 11, wherein the processor is further configured for determining whether to change an OLPC parameter based at least in part on a change in estimated deployment density of the neighbor cells in a geographical neighborhood of the cell.

18. The apparatus of claim 11, wherein the processor is further configured for operating the cell comprising a small cell.

19. The apparatus of claim 11, wherein the processor is further configured for determining the estimated number of neighbor cells comprising small cells.

20. A non-transitory computer-readable medium holding instructions, that when executed by a processor, cause a computer to:

determine an estimated number of neighbor cells deployed within radio range of a cell; and

configure OLPC parameters for uplink communications, based on the estimated number of neighbor cells.

21. The non-transitory computer-readable medium of claim 20, holding further instructions for determining the estimated number of neighbor cells at least in part by measuring respective signal strengths of the neighbor cells using a network listen functionality.

22. The non-transitory computer-readable medium of claim 20, holding further instructions for selecting at least two OLPC intermediate parameters P_o and a from a data table, based on the estimated number of neighbor cells.

23. The non-transitory computer-readable medium of claim 22, holding further instructions for determining a path loss statistic based on one or more UE measurement reports each indicating a path loss of a UE to at least one of the cell or one of the neighbor cells.

24. The non-transitory computer-readable medium of claim 23, holding further instructions for selecting the OLPC parameters further based on the path loss statistic and the OLPC intermediate parameters P_o and α

.

25. The non-transitory computer-readable medium of claim 20, holding further instructions for determining whether to change an OLPC parameter based at least in part on a change in estimated deployment density of the neighbor cells in a geographical neighborhood of the cell.

26. The non-transitory computer-readable medium of claim 20, holding further instructions for adapting the OLPC parameters based on at least one of a UE power headroom report or overload indicator received from the neighbor cells.