Granted Patent B2

US 12,256,337 · App. 18/205,217 · Granted Mar 18, 2025

Inventors: Antti Piipponen (Helsinki, FI); Vesa Lehtinen (Tampere, FI); Petri Vasenkari (Turku, FI); Jaakko Marttila (Tampere, FI)

Assignee: NOKIA TECHNOLOGIES OY

H04W52/243H04L5/0007H04L5/0039H04W52/146H04W52/36

Abstract

Claims (179)

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 (IMD 3 ) 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 start is 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 CRB is a number of contiguously allocated resource blocks of the resource block allocation;

F C is a center frequency of the frequency channel;

BW Channel is a bandwidth of the frequency channel;

f start,max,IMD3 is an allocation start of the IMD 3 region,

AW max,IMD3 is an allocation bandwidth of the IMD 3 region,

F UL_low is an edge frequency of the uplink operating band,

offset IMD3 is a threshold frequency offset associated with the IMD 3 region,

Δ start refers to an edge of the regrowth region,

AW max,regrowth is an allocation bandwidth of the regrowth region, and

offset regrowth is a threshold frequency offset associated with the regrowth region.

2. The method of claim 1 , wherein the edge of the regrowth region is defined using:

RB start =L CRB /2+Δ start /RBW.

3. The method of claim 1 , wherein f start,max,IMD3 and AW max,IMD3 define resource allocation region borders for the IMD 3 region.

4. The method of claim 1 , wherein f start,max,IMD3 is a maximum value of RB start within the IMD 3 region.

5. The method of claim 1 , wherein AW max,IMD3 is a maximum value of L CRB within the IMD 3 region.

6. The method of claim 1 , wherein determining the A-MPR comprises determining the A-MPR for the transmission power of the user device based on the resource block allocation being within at least one of the following: the IMD 3 region or the regrowth region.

7. The method of claim 1 , wherein the IMD 3 region is a resource allocation region in which the transmission power of the user device is limited by intermodulation distortion to reduce interference to a protected frequency band.

8. The method of claim 1 , wherein the regrowth region is a resource allocation region in which the transmission power of the user device is limited by spectral regrowth to reduce interference to a protected frequency band.

9. An apparatus configured for power control, the apparatus comprising:

at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least:

receiving 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 user device transmission power based at least in part on the A-MPR,

wherein the A-MPR is determined by:

if:

RB start ≤f start,max,IMD3 /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 (IMD 3 ) 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 ≤AW 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,regowth /RBW , and

F C −BW Channel /2< F UL_low +offset regrowth ,

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 start is 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 CRB is a number of contiguously allocated resource blocks of the resource block allocation;

F C is a center frequency of the frequency channel;

BW Channel is a bandwidth of the frequency channel;

f start,max,IMD3 is an allocation start of the IMD 3 region,

AW max,IMD3 is an allocation bandwidth of the IMD 3 region,

F UL_low is an edge frequency of the uplink operating band,

offset IMD3 is a threshold frequency offset associated with the IMD 3 region,

Δ start refers to an edge of the regrowth region,

AW max,regrowth is an allocation bandwidth of the regrowth region, and

offset regrowth is a threshold frequency offset associated with the regrowth region.

10. The apparatus of claim 9 , wherein the edge of the regrowth region is defined using:

RB start =L CRB /2+Δ start /RBW.

11. The apparatus of claim 10 , further comprising:

a transceiver configured to receive the resource block allocation for uplink transmission that includes the one or more resource blocks within the frequency channel.

12. The apparatus of claim 10 , further comprising:

a transceiver configured to transmit signals for which the transmission power is controlled based on the A-MPR.

13. The apparatus of claim 9 , wherein f start,max,IMD3 and AW max,IMD3 define resource allocation region borders for the IMD 3 region.

14. The apparatus of claim 9 , wherein f start,max,IMD3 is a maximum value of RB start within the IMD 3 region.

15. The apparatus of claim 9 , wherein AW max,IMD3 is a maximum value of L CRB within the IMD 3 region.

16. The apparatus of claim 9 , wherein the instructions, when executed by the at least one processor, cause the apparatus to perform:

determining the A-MPR by determining the A-MPR for the transmission power of the user device based on the resource block allocation being within at least one of the following: the IMD 3 region or the regrowth region.

17. The apparatus of claim 9 , wherein the IMD 3 region is a resource allocation region in which the transmission power of the user device is limited by intermodulation distortion to reduce interference to a protected frequency band.

18. The apparatus of claim 9 , wherein the regrowth region is a resource allocation region in which the transmission power of the user device is limited by spectral regrowth to reduce interference to a protected frequency band.

19. The apparatus of claim 9 , wherein the apparatus comprises a user equipment.

20. 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 a maximum power reduction (MPR);

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

determining a maximum of the MPR and the A-MPR; and

controlling a transmission power of the user device based on the maximum of the MPR and the A-MPR,

wherein determining the A-MPR comprises:

if:

RB start ≤f start,max,IMD3 /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 (IMD 3 ) region;

else, if:

RB start ≤L CRB /2+Δ start /RBW , and

L CRB ≤AW max,regrowth /RBW ; and

F C −BW Chanel /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 ≤AW max,IMD3 /RBW , and

F C −BW Channel /2< F UL_low +offset regrowth ,

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 regrowth ,

then, defining the A-MPR to equal 0 such that the MPR is the maximum of the MPR and the A-MPR,

wherein:

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

RB start is 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 CRB is a number of contiguously allocated resource blocks of the resource block allocation;

F C is a center frequency of the frequency channel;

BW Channel is a bandwidth of the frequency channel;

f start,max,IMD3 is an allocation start of the IMD 3 region,

AW max,IMD3 is an allocation bandwidth of the IMD 3 region,

F UL_low is an edge frequency of the uplink operating band,

offset IMD3 is a threshold frequency offset associated with the IMD 3 region,

Δ start refers to an edge of the regrowth region,

AW max,regrowth is an allocation bandwidth of the regrowth region, and

offset regrowth is a threshold frequency offset associated with the regrowth region.

21. An apparatus configured for power control, the apparatus comprising:

at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least:

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

determining a maximum power reduction (MPR);

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

determining a maximum of the MPR and the A-MPR; and

controlling a user device transmission power based on the maximum of the MPR and A-MPR,

wherein determining the A-MPR comprises:

if:

RB start ≤f start,max,IMD3 /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 (IMD 3 ) 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 ≤AW max,IMD3 /RBW , and

F C −BW Channel /2< F UL_low +offset IMD3 ,

nor:

RB start ≤L CRB /2+ 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 to equal 0 such that the MPR is the maximum of the MPR and the A-MPR,

wherein:

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

RB start is 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 CRB is a number of contiguously allocated resource blocks of the resource block allocation,

F C is a center frequency of the frequency channel;

BW Channel is a bandwidth of the frequency channel;

f start,max,IMD3 is an allocation start of the IMD 3 region,

AW max,IMD3 is an allocation bandwidth of the IMD 3 region,

F UL_low is an edge frequency of the uplink operating band,

offset IMD3 is a threshold frequency offset associated with the IMD 3 region,

Δ start refers to an edge of the regrowth region,

AW max,regrowth is an allocation bandwidth of the regrowth region, and

offset regrowth is a threshold frequency offset associated with the regrowth region.

Assignments (1)

Continuity (4)

References Cited (90)