Method for optimizing uplink power-control parameters in LTE
View Patent ↗One embodiment of the present invention provides a system for setting uplink power-control parameters for a cell within a wireless network. During operation, the system receives parameters associated with uplink power for a plurality of user devices within the cell over a predetermined time interval, and averages the received parameters over the user devices and the predetermined time interval to obtain an averaged parameter. The system then determines a set of power-control parameters for the cell based on the averaged parameter, and sends the set of power-control parameters to the user devices to allow the user devices to control transmission power using the set of power-control parameters.
1. A computing system for setting uplink power-control parameters for a cell within a wireless network, the system comprising:
a power-metric determination mechanism configured to determine a long-term power metric for the cell based on an average uplink path-loss parameter calculated over a plurality of user devices over a pre-determined time interval;
a cell-type determination mechanism configured to determine a type for the cell based on the long-term power metric; and
a power-control-parameter determination mechanism configured to determine a set of power-control parameters for the cell based on the cell type.
2. The computing system of claim 1 , wherein the wireless network is a Long Term Evolution (LTE) network.
3. The computing system of claim 1 , wherein the uplink path-loss parameter includes a loss-to-serving-cell portion indicating path-loss between a user device and a base station located in the cell and a loss-to-neighbors portion indicating path-loss between a user device and base stations located at neighboring cells.
4. The computing system of claim 3 , wherein the loss-to-serving-cell portion is based on an average path loss over all active UEs within the cell, and the loss-to-neighbors portion is based on an average path loss over all UEs that report a reference signal received power (RSRP).
5. The computing system of claim 1 , wherein the long-term power metric is determined based on an average path loss to a base station in the cell and an average path loss to a base station in a neighboring cell.
6. The computing system of claim 1 , wherein the predetermined time interval is a number of hours, days, or weeks.
7. The computing system of claim 1 , further comprising a lookup table indicating mapping between a cell type and a set of power-control parameters.
8. A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for setting uplink power-control parameters for a cell within a wireless network, the method comprising:
determining a long-term power metric for the cell based on an average uplink path-loss parameter calculated over a plurality of user devices over a pre-determined time interval;
determining a type for the cell based on the long-term power metric; and
transmitting a set of power-control parameters for the cell based on the cell type.
9. The computer-readable storage medium of claim 8 , wherein the wireless network is a Long Term Evolution (LTE) network.
10. The computer-readable storage medium of claim 8 , wherein the uplink path-loss parameter includes a loss-to-serving-cell portion indicating path-loss between the user device and the base station and a loss-to-neighbors portion indicating path-loss between the user device and base stations located at neighboring cells.
11. The computer-readable storage medium of claim 10 , wherein the loss-to-serving-cell portion is based on an average path loss over all active UEs within the cell, and the loss-to-neighbors portion is based on an average path loss over all UEs that report a reference signal received power (RSRP).
12. The computer-readable storage medium of claim 8 , wherein the long-term power metric is determined based on an average path loss to a base station in the cell and an average path loss to a base station in a neighboring cell.
13. The computer-readable storage medium of claim 8 , wherein the predetermined time interval is a number of hours, days, or weeks.
14. The computer-readable storage medium of claim 8 , wherein the method further comprises looking up a lookup table indicating mapping between a cell type and a set of power-control parameters.
15. A computer-executable method for setting uplink power-control parameters for a cell within a wireless network, the method comprising:
determining a long-term power metric for the cell based on an average uplink path-loss parameter calculated over a plurality of user devices over a pre-determined time interval;
determining a type for the cell based on the long-term power metric; and
transmitting a set of power-control parameters for the cell based on the cell type.
16. The method of claim 15 , wherein the wireless network is a Long Term Evolution (LTE) network.
17. The method of claim 15 , wherein the uplink path-loss parameter includes a loss-to-serving-cell portion indicating path-loss between the user device and the base station and a loss-to-neighbors portion indicating path-loss between the user device and base stations located at neighboring cells.
18. The method of claim 17 , wherein the loss-to-serving-cell portion is based on an average path loss over all active UEs within the cell, and the loss-to-neighbors portion is based on an average path loss over all UEs that report a reference signal received power (RSRP).
19. The method of claim 15 , wherein the long-term power metric is determined based on an average path loss to a base station in the cell and an average path loss to a base station in a neighboring cell.
20. The method of claim 15 , wherein the predetermined time interval is a number of hours, days, or weeks.
21. The method of claim 15 , further comprising looking up a lookup table indicating mapping between a cell type and a set of power-control parameters.