IP Library › Granted Patent US 12701515

Granted Patent B2

US 12701515 · App. 18/593,676 · Granted Aug 4, 2026

System and method for wireless power control

Inventors: Jialing Liu (Palatine, IL); Weimin Xiao (Hoffman Estates, IL); Qian Cheng (Naperville, IL)

Assignee: FUTUREWEI TECHNOLOGIES, INC.

H04W52/146 H04W52/08 H04W52/10 H04W52/241 H04W52/242 H04W52/245 H04W72/23 H04W52/50 H04W72/0473

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Quick Facts

Patent No.: US 12701515
App. No.: 18/593,676
Granted: Aug 4, 2026
Kind: B2

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Abstract

A method for operating a user equipment (UE) includes receiving at least one of a configuration of a first group of one or more downlink (DL) signals, a configuration of a second group of one or more open-loop power control (PC) parameters, a configuration of a third group of one or more closed-loop PC parameters, or a configuration of a fourth group of one or more loop states, receiving a configuration of a PC setting, wherein the PC setting is associated with at least one of a subset of the first group, a subset of the second group, a subset of the third group, or a subset of the fourth group, selecting a transmit power level in accordance with the PC setting and a pathloss, wherein the pathloss is determined in accordance with a DL reference signal (SS) and a synchronization signal (SS).

Claims (58)

1 . A method comprising:

receiving, by a user equipment (UE), a group of power control (PC) configuration parameters using radio resource control (RRC) signaling, the group of PC configuration parameters being different from a PC adjustment state of the UE, wherein the group of PC configuration parameters is configured to be used for power control of an uplink (UL) transmission, and wherein the group of PC configuration parameters includes at least one of an open-loop power control offset parameter (P o ) or an open-loop power control scaling parameter (alpha);

receiving, by the UE, an indication of the PC adjustment state using downlink control information (DCI) signaling;

determining, by the UE, a transmit power level for the UL transmission in accordance with the group of PC configuration parameters, the PC adjustment state, and a pathloss estimate calculated based on a downlink (DL) signal received by the UE; and

transmitting, by the UE, the UL transmission at the transmit power level.

2 . The method of claim 1 , the receiving the indication of the PC adjustment state comprising:

receiving, by the UE, a configuration indicating a plurality of PC adjustment states, the plurality of PC adjustment states including the PC adjustment state, each of the plurality of PC adjustment states associated with a different closed-loop index; and

receiving, by the UE, a closed-loop index associated with the PC adjustment state.

3 . The method of claim 1 , further comprising:

receiving, by the UE, a configuration indicating an association of the group of PC configuration parameters, a first index of the PC adjustment state, a second index of the DL signal, and the UL transmission.

4 . The method of claim 1 , the UL transmission including a physical uplink shared channel (PUSCH) transmission, a physical uplink control channel (PUCCH) transmission, or a sounding reference signal (SRS) transmission.

5 . The method of claim 4 , the UL transmission including the PUCCH transmission, the method further comprising:

receiving, by the UE, a second group of PC configuration parameters for the PUSCH transmission, the group of PC configuration parameters for the PUCCH transmission being different from the second group of PC configuration parameters for the PUSCH transmission.

6 . The method of claim 5 , an open-loop PC parameter in the group of PC configuration parameters for the PUCCH transmission being different from a second open-loop PC parameter in the second group of PC configuration parameters for the PUSCH transmission, wherein the open-loop PC parameter is one of an alpha parameter or a P o parameter.

7 . A user equipment (UE) comprising:

at least one processor; and

a non-transitory computer readable storage medium storing programming, the programming including instructions that, when executed by the at least one processor, cause the UE to perform operations including:

receiving a group of power control (PC) configuration parameters using radio resource control (RRC) signaling, the group of PC configuration parameters being different from a PC adjustment state of the UE, wherein the group of PC configuration parameters is configured to be used for power control of an uplink (UL) transmission, and wherein the group of PC configuration parameters includes at least one of an open-loop power control offset parameter (Po) or an open-loop power control scaling parameter (alpha);

receiving, by the UE, an indication of the PC adjustment state using downlink control information (DCI) signaling;

determining a transmit power level for the UL transmission in accordance with the group of PC configuration parameters, the PC adjustment state, and a pathloss estimate calculated based on a downlink (DL) signal received by the UE; and

transmitting the UL transmission at the transmit power level.

8 . The UE of claim 7 , the receiving the indication of the PC adjustment state comprising:

receiving a configuration indicating a plurality of PC adjustment states, the plurality of PC adjustment states including the PC adjustment state, each of the plurality of PC adjustment states associated with a different closed-loop index; and

receiving a closed-loop index associated with the PC adjustment state.

9 . The UE of claim 7 , the operations further comprising:

10 . The UE of claim 7 , the UL transmission including a physical uplink shared channel (PUSCH) transmission, a physical uplink control channel (PUCCH) transmission, or a sounding reference signal (SRS) transmission.

11 . The UE of claim 10 , the UL transmission including the PUCCH transmission, the operations further comprising:

12 . The UE of claim 11 , an open-loop PC parameter in the group of PC configuration parameters for the PUCCH transmission being different from a second open-loop PC parameter in the second group of PC configuration parameters for the PUSCH transmission, wherein the open-loop PC parameter is one of an alpha parameter or a P o parameter.

13 . A method comprising:

transmitting, by a base station, a group of power control (PC) configuration parameters using radio resource control (RRC) signaling, the group of PC configuration parameters being different from a PC adjustment state of a user equipment (UE), wherein the group of PC configuration parameters is configured to be used for power control of an uplink (UL) transmission based on the group of PC configuration parameters, the PC adjustment state, and a pathloss estimate calculated based on a downlink (DL) signal, and wherein the group of PC configuration parameters includes at least one of an open-loop power control offset parameter (P o ) or an open-loop power control scaling parameter (alpha);

transmitting, by the base station, an indication of the PC adjustment state using downlink control information (DCI) signaling; and

receiving, by the base station, the UL transmission.

14 . The method of claim 13 , the transmitting the indication of the PC adjustment state comprising:

transmitting, by the base station, a configuration indicating a plurality of PC adjustment states including the PC adjustment state, each of the plurality of PC adjustment states associated with a different closed-loop index; and

transmitting, by the base station, a closed-loop index associated with the PC adjustment state.

15 . The method of claim 13 , further comprising:

transmitting, by the base station, a configuration indicating an association of the group of PC configuration parameters, a first index of the PC adjustment state, a second index of the DL signal, and the UL transmission.

16 . The method of claim 13 , the UL transmission including a physical uplink shared channel (PUSCH) transmission, a physical uplink control channel (PUCCH) transmission, or a sounding reference signal (SRS) transmission.

17 . The method of claim 16 , the UL transmission including the PUCCH transmission, the method further comprising:

transmitting, by the base station, a second group of PC configuration parameters for the PUSCH transmission, the group of PC configuration parameters for the PUCCH transmission being different from the second group of PC configuration parameters for the PUSCH transmission.

18 . The method of claim 17 , an open-loop PC parameter in the group of PC configuration parameters for the PUCCH transmission being different from a second open-loop PC parameter in the second group of PC configuration parameters for the PUSCH transmission, wherein the open-loop PC parameter is one of an alpha parameter or a P o parameter.

19 . A base station comprising:

at least one processor; and

a non-transitory computer readable storage medium storing programming, the programming including instructions that, when executed by the at least one processor, cause the base station to perform operations including:

transmitting a group of power control (PC) configuration parameters using radio resource control (RRC) signaling, the group of PC configuration parameters being different from a PC adjustment state of a user equipment (UE), wherein the group of PC configuration parameters is configured to be used for power control of an uplink (UL) transmission based on the group of PC configuration parameters, the PC adjustment state, and a pathloss estimate calculated based on a downlink (DL) signal, and wherein the group of PC configuration parameters includes at least one of an open-loop power control offset parameter (P o ) or an open-loop power control scaling parameter (alpha);

transmitting, by the base station, an indication of the PC adjustment state using downlink control information (DCI) signaling; and

receiving the UL transmission.

20 . The base station of claim 19 , the transmitting the indication of the PC adjustment state comprising:

transmitting a configuration indicating a plurality of PC adjustment states including the PC adjustment state, each of the plurality of PC adjustment states associated with a different closed-loop index; and

transmitting a closed-loop index associated with the PC adjustment state.

21 . The base station of claim 19 , the operations further comprising:

transmitting a configuration indicating an association of the group of PC configuration parameters, a first index of the PC adjustment state, a second index of the DL signal, and the UL transmission.

22 . The base station of claim 19 , the UL transmission including a physical uplink shared channel (PUSCH) transmission, a physical uplink control channel (PUCCH) transmission, or a sounding reference signal (SRS) transmission.

23 . The base station of claim 22 , the UL transmission including the PUCCH transmission, the operations further comprising:

transmitting a second group of PC configuration parameters for the PUSCH transmission, the group of PC configuration parameters for the PUCCH transmission being different from the second group of PC configuration parameters for the PUSCH transmission.

24 . The base station of claim 23 , an open-loop PC parameter in the group of PC configuration parameters for the PUCCH transmission being different from a second open-loop PC parameter in the second group of PC configuration parameters for the PUSCH transmission, wherein the open-loop PC parameter is one of an alpha parameter or a P o parameter.