Apparatus and method for uplink power control for variable interference conditions

Patent metadata

Field	Value
Publication number	US-10237833-B2
Application number	US-201214233367-A
Country	US
Kind code	B2
Filing date	Jun 28, 2012
Priority date	Jul 28, 2011
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

According to an example embodiment of this application, a method may include by a processor, processing communication with a network element, the communication comprising one or more frames, wherein each frame comprises at least two subframes; receiving a signaling indicating definition of subframe groups; receiving a power control command for controlling a transmission power; and applying the power control command.

First claim

What is claimed is:

1. A method, comprising:
processing at a user equipment a communication with a network element, wherein the communication comprising one or more frames, and wherein each of the one or more frames comprises at least two subframes;
receiving at the user equipment a signal indicating a definition of subframe groups each comprising at least one of the at least two subframes in a time domain, wherein the definition defines a plurality of subframes which are subjected to power control as a subframe group;
receiving at the user equipment separate reference power levels for each of the subframe groups, wherein the reference power levels define a power level for the user equipment to use during a transmission;
receiving at the user equipment a power control command for controlling a transmission power associated with at least one of the subframe groups; and
controlling power at the user equipment by applying the power control command to the reference power levels for at least one of the subframe groups.

2. The method as claimed in claim 1 , wherein applying the power control command comprises at least one of applying the power control command to at least one of the at least two subframes where the communication is scheduled, applying the power control command to a plurality of the subframe groups where the communication is scheduled, and applying the power control command to at least one of the at least two subframes where the communication is scheduled and the corresponding subframes in a same one of the subframe groups.

3. The method as claimed in claim 2 , wherein the transmission power of at least one of the subframes is based at least on the received power control command and the transmission power of a previous subframe belonging to the same one of the subframe groups.

4. The method as claimed in claim 1 , wherein a timing relationship between at least one of the at least two subframes where the power control command is received and another of the subframes where the power control command is applied, is predefined.

5. A method as claimed in claim 1 , wherein receiving a power control command comprises receiving separate power control commands for each of the subframe groups in a single message with a power control command index assigned for each of the subframe groups.

6. The method according to claim 1 , wherein the power control command is an accumulative power control command.

7. An apparatus, comprising:
at least one processor; and
at least one memory including computer program code,
wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
process at a user equipment a communication with a network element, wherein the communication comprising one or more frames, and wherein each of the one or more frames comprises at least two subframes;
receive at the user equipment a signaling indicating a definition of subframe groups each comprising at least one of the at least two subframes in a time domain, wherein the definition defines a plurality of subframes which are subjected to power control as a subframe group;
receive at the user equipment separate reference power levels for each of the subframe groups, wherein the reference power levels define a power level for the user equipment to use during a transmission;
receive at the user equipment a power control command for controlling a transmission power associated with at least one of the subframe groups; and
control power at the user equipment by applying the power control command to the reference power levels for at least one of the subframe groups.

8. The apparatus as claimed in claim 7 , wherein the power control command is applied to at least one of the subframes where the communication is scheduled, a plurality of subframe groups where the communication is scheduled, and at least one of the subframes where the communication is scheduled and the corresponding subframes in a same one of the subframe groups.

9. The apparatus as claimed in claim 8 , wherein the transmission power of at least one of the subframes is based at least on the received power control command and the transmission power of a previous subframe belonging to the same one of the subframe groups.

10. The apparatus as claimed in claim 7 , wherein the timing relationship between at least one of the subframes where the power control command is received and another of the subframes where the power control command is applied, is predefined.

11. The apparatus as claimed in claim 7 , wherein the power control command is received as separate power control commands for each of the subframe groups in a single message with a power control command index assigned for each of the subframe groups.

12. The apparatus as claimed in claim 7 , wherein the power control command is an accumulative power control command.

13. A computer program product comprising a non-transitory computer-readable medium bearing computer program code embodied therein for use with a computer, the computer program code when executed in hardware perform a process comprising:
processing at a user equipment a communication with a network element, wherein the communication comprising one or more frames, and wherein each of the one or more frames comprises at least two subframes;
receiving at the user equipment a signaling indicating a definition of subframe groups each comprising at least one of the at least two subframes in a time domain, wherein the definition defines a plurality of subframes which are subjected to power control as a subframe group;
receiving at the user equipment separate reference power levels for each of the subframe groups, wherein the reference power levels define a power level for the user equipment to use during a transmission;
receiving at the user equipment a power control command for controlling a transmission power associated with at least one of the subframe groups; and
controlling power at the user equipment by applying the power control command to the reference power levels for at least one of the subframe groups.

14. The computer program product as claimed in claim 13 , wherein the computer program code for applying the power control command comprises code for at least one of applying the power control command to at least one of the subframes where the communication is scheduled, applying the power control command to a plurality of subframe groups where the communication is scheduled, and applying the power control command to at least one of the subframes where the communication is scheduled and the corresponding subframes in a same one of the subframe groups.

15. The computer program product as claimed in claim 14 , wherein the transmission power of at least one of the subframes is based at least on the received power control command and the transmission power of a previous subframe belonging to the same one of the subframe groups.

16. The computer program product as claimed in claim 13 , wherein the timing relationship between at least one of the subframes where the power control command is received and another of the subframes where the power control command is applied, is predefined.

17. The computer program product as claimed in claim 13 , wherein the computer program code for receiving a power control command comprises code for receiving separate power control commands for each of the subframe groups in a single message with a power control command index assigned for each of the subframe groups.

18. The computer program product as c

Assignees

• Ribeiro Cassio Barboza
• Korhonen Juha Sakari
• Tiirola Esa Tapani
• Pajukoski Kari Pekka
• Nokia Technologies Oy

Inventors

• Ribeiro Cássio Barboza
• Korhonen Juha Sakari
• Tiirola Esa Tapani
• Pajukoski Kari Pekka

Classifications

• H04W52/146 Primary

  Uplink power control · CPC title

• H04J3/1694

  Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers (Passive Optical Networks H04Q11/0062) · CPC title

• H04W52/346

  distributing total power among users or channels · CPC title

• H04W52/244 Primary

  Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI] · CPC title

• H04W52/58

  Format of the TPC bits · CPC title