	US 12,256,337 B2
	Additional maximum power reduction for uplink transmission for wireless networks
Antti Piipponen, Helsinki (FI); Vesa Lehtinen, Tampere (FI); Petri Vasenkari, Turku (FI); and Jaakko Marttila, Tampere (FI)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on Jun. 2, 2023, as Appl. No. 18/205,217.
Application 18/205,217 is a continuation of application No. 17/886,941, filed on Aug. 12, 2022, granted, now 11,711,770.
Application 17/886,941 is a continuation of application No. 16/982,386, granted, now 11,463,965, issued on Oct. 4, 2022, previously published as PCT/FI2019/005025, filed on Mar. 28, 2019.
Claims priority of provisional application 62/653,423, filed on Apr. 5, 2018.
Prior Publication US 2023/0309026 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 52/24 (2009.01); H04L 5/00 (2006.01); H04W 52/14 (2009.01); H04W 52/36 (2009.01)

CPC H04W 52/243 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0039 (2013.01); H04W 52/146 (2013.01); H04W 52/36 (2013.01)]

21 Claims

1. A method of power control, the method comprising:

receiving, by a user device, a resource block allocation for uplink transmission that includes one or more resource blocks within a frequency channel in an uplink operating band;

determining an additional maximum power reduction (A-MPR); and

controlling a transmission power of the user device based at least in part on the A-MPR, wherein determining the A-MPR comprises:

if:

RB_start≤f_{start,max,MMD3}/RBW; and

L_CRB≤AW_max,IMD3/RBW; and

F_C−BW_Channel/2<F_{UL_low}+offset_IMD3,

then, defining the A-MPR according to a first value associated with a third order intermodulation distortion (IMD3) region;

else, if:

RB_start≤L_CRB/2+Δ_start/RBW; and

L_CRB≤AW_max,regrowth/RBW; and

F_C−BW_Channel/2<F_{UL_low}+offset_regrowth,

then, defining the A-MPR according to a second value associated with a regrowth region, else, if:

neither:

RB_start≤f_{start,max,IMD3}/RBW, and

L_CRB≤ΔW_max,IMD3/RBW, and

F_C−BW_Channel/2<F_{UL_low}+offset_IMD3,

nor:

RB_start≤L_CRB/2+Δ_start/RBW, and

L_CRB≤AW_max,regrowth/RBW, and

F_C−BW_Channel/2<F_{UL_low}+offset_growth,

then, defining the A-MPR to equal 0,

wherein:

RBW is a bandwidth of a resource block of the one or more resource blocks;

RB_startis an index of a lowest allocated resource block of the resource block allocation within the frequency channel, with RB_start=0 being a lowest resource block in the frequency channel;

L_CRBis a number of contiguously allocated resource blocks of the resource block allocation;

F_Cis a center frequency of the frequency channel;

BW_Channelis a bandwidth of the frequency channel;

f_{start,max,IMD3}is an allocation start of the IMD3 region,

AW_max,IMD3is an allocation bandwidth of the IMD3 region,

F_{UL_low}is an edge frequency of the uplink operating band,

offset_IMD3is a threshold frequency offset associated with the IMD3 region,

Δ_startrefers to an edge of the regrowth region,

AW_max,regrowthis an allocation bandwidth of the regrowth region, and

offset_regrowthis a threshold frequency offset associated with the regrowth region.