METHOD FOR DETERMINING UPLINK TRANSMISSION POWER IN A NETWORK INCLUDING A PLURALITY OF CELLS, AND APPARATUS THEREFOR

• US 20140146750A1
• Filed: 05/07/2012
• Published: 05/29/2014
• Est. Priority Date: 05/06/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Dongcheol, Jang, Jiwoong, Cho, Hangyu
• Granted Patent: US 9,491,717 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/244 Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level
• CPC Class Codes: H04W 52/346 distributing total power among users or channels

Abstract

Disclosed is a method for determining uplink transmission power in a network including a plurality of cells, and an apparatus therefor. The method for a terminal to determine uplink transmission power in a network including a plurality of cells may comprise the following steps: receiving information including values of path-loss compensation factors set for each of the plurality of cells; determining uplink transmission power using the value of the path-loss compensation factor corresponding to the cell, from among the plurality of cells, in which the terminal is currently located; and a step of transmitting an uplink signal using the determined transmission power.

Claims

1. A method of determining an uplink transmit power by a user equipment in a network including a plurality of cells, the method comprising:

receiving information containing a pathloss compensation factor value set for each of the plurality of the cells;

determining an uplink transmit power using a pathloss compensation factor value corresponding to a cell at which the user equipment is currently positioned among the plurality of the cells; and

transmitting an uplink signal using the determined transmit power.

2. The method of claim 1, wherein the plurality of the cells comprise a heterogeneous cell and wherein the set pathloss compensation factor value is different from each other between the heterogeneous cells.

3. The method of claim 1, wherein the pathloss compensation factor value set for each of the cells is configured in accordance with the cells based on a resource allocation pattern for each of the cells.

4. The method of claim 3, wherein the pathloss compensation factor value set for each of the cells is configured with a specific time unit in each of the cells.

5. The method of claim 4, wherein the specific time unit comprises a frame, a subframe, or a symbol unit.

6. The method of claim 1, wherein the uplink transmit power corresponds to a transmit power for PUSCH (physical uplink shared channel) transmission.

7. The method of claim 3, wherein the pathloss compensation factor value set for each of each of the plurality of the cells is set further based on whether each of the cells corresponds to an isolated cell.

8. The method of claim 3, further comprising:

receiving information on the resource allocation pattern for each of the cells, wherein the resource allocation pattern for each of the cells comprises at least one an ABS (almost blanking subframe) assignment pattern information for each of the cells, information on PUSCH (physical uplink shared channel) transmission resource for each of the cells, or information on PUCCH transmission resource information for each of the cells.

9. A user equipment for determining an uplink transmit power in a network including a plurality of cells, the user equipment comprising:

a receiver configured to receive information containing a pathloss compensation factor value set per each of the plurality of the cells;

a processor configured to determine a uplink transmit power using the pathloss compensation factor value corresponding to a cell at which the user equipment is currently positioned among each of the plurality of the cells; and

a transmitter configured to transmit an uplink signal using the determined transmit power.

10. The user equipment of claim 9, wherein the pathloss compensation factor value set for each of the cells is configured in accordance with the cells based on a resource allocation pattern for each of the cells.

11. The user equipment of claim 10, wherein the receiver is configured to further receive information on the resource allocation pattern for each of the cells, wherein the resource allocation pattern for each of the cells comprises at least one an ABS (almost blanking subframe) assignment pattern information according to the cells, information on PUSCH (physical uplink shared channel) transmission resource for each of the cells, or information on PUCCH transmission resource for each of the cells.