CN114389743B

CN114389743B - Power control method, network equipment, terminal, device and storage medium

Info

Publication number: CN114389743B
Application number: CN202011112047.9A
Authority: CN
Inventors: 徐明宇; 宋溪; 刘蓉
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2023-12-26
Anticipated expiration: 2040-10-16
Also published as: CN114389743A; WO2022078205A1

Abstract

The embodiment of the application provides a power control method, network equipment, a terminal, a device and a storage medium, wherein the method comprises the following steps: acquiring an adaptive modulation coding AMC parameter value of a current closed-loop power control period; the AMC parameter value is used for representing a modulation and coding strategy MCS of the current closed-loop power control period; and determining a power adjustment value of a next closed-loop power control period based on the AMC parameter value and a power control mode of a current closed-loop power control period. According to the power control method, the network equipment, the terminal, the device and the storage medium, based on the MCS level range in the AMC, power consumption and interference are reduced by controlling the too high power transmission, performance is improved by improving the too low power transmission, and BLER is reduced.

Description

Power control method, network equipment, terminal, device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a power control method, a network device, a terminal, an apparatus, and a storage medium.

Background

The power control process of the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) is to adjust the transmission power of the PUSCH, so as to compensate the effects of path loss, shadow fading, fast fading and the like; meanwhile, power control of PUSCH is also used to control interference levels between cells.

In the prior art, PUSCH power control mainly consists of two parts, open loop and closed loop. An important part that is essential in the closed loop power control process is the transmit power control (Transmission Power Control, TPC) command update. PUSCH power control is performed by updating TPC commands.

However, the prior art schemes may result in that the performance of the modulation and coding strategy (Modulation and Coding Scheme, MCS) is not properly matched because of either too high or too low a transmit power, because there are upper and lower limits on the MCS level in the adaptive modulation coding (Adaptive Modulation and Coding, AMC). The upper limit of the MCS level causes the problem that the performance is improved and the interference is increased instead of the performance which is necessarily brought along with the power improvement; the lower limit of MCS level results in too low power and not proper MCS matching, causing a problem of increased Block Error Rate (BLER).

Disclosure of Invention

The embodiment of the application provides a power control method, network equipment, a terminal, a device and a storage medium, which are used for solving the technical problem that interference and block error rate cannot be considered in the prior art.

In a first aspect, an embodiment of the present application provides a power control method, including:

Acquiring an adaptive modulation coding AMC parameter value of a current closed-loop power control period; the AMC parameter value is used for representing a modulation and coding strategy MCS of the current closed-loop power control period;

and determining a power adjustment value of a next closed-loop power control period based on the AMC parameter value and a power control mode of a current closed-loop power control period.

Optionally, according to a power control method of an embodiment of the present application, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically includes:

if the power control mode of the current closed loop power control period is a far-end power control mode and the AMC parameter value is smaller than the lower limit value of the minimum target AMC parameter, determining that the power adjustment value is larger than zero; the power control mode of the current closed-loop power control period is the remote power control mode and is determined in the last closed-loop power control period;

if the power control mode of the current closed-loop power control period is a remote power control mode, the AMC parameter value is larger than or equal to the lower limit value of the minimum target AMC parameter, and the AMC parameter value is smaller than the upper limit value of the minimum target AMC parameter, determining that the power adjustment value is equal to zero;

And if the power control mode of the current closed-loop power control period is a remote power control mode and the AMC parameter value is greater than or equal to the upper limit value of the minimum target AMC parameter, determining that the power adjustment value is equal to zero and exiting the remote power control mode.

Optionally, according to the power control method of an embodiment of the present application, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically further includes:

if the power control mode of the current closed loop power control period is a near-end power control mode and the AMC parameter value is larger than the upper limit value of the maximum target AMC parameter, determining that the power adjustment value is smaller than zero; the power control mode of the current closed-loop power control period is the near-end power control mode and is determined in the last closed-loop power control period;

if the power control mode of the current closed-loop power control period is a near-end power control mode, the AMC parameter value is larger than the lower limit value of the maximum target AMC parameter, and the AMC parameter value is smaller than or equal to the upper limit value of the maximum target AMC parameter, determining that the power adjustment value is equal to zero;

And if the power control mode of the current closed-loop power control period is a near-end power control mode and the AMC parameter value is smaller than or equal to the lower limit value of the maximum target AMC parameter, determining that the power adjustment value is equal to zero and exiting the near-end power control mode.

Optionally, according to a power control method of an embodiment of the present application, the AMC parameter value is an MCS level value.

Optionally, according to the power control method of an embodiment of the present application, the AMC parameter value is a signal-to-interference-and-noise ratio SINR value corresponding to an MCS level.

smoothing a plurality of AMC parameter values in the current closed loop power control period;

and determining a power adjustment value of the next closed-loop power control period based on the smoothed AMC parameter value and the power control mode of the current closed-loop power control period.

Performing linear average processing on a plurality of AMC parameter values in the current closed-loop power control period;

and determining a power adjustment value of the next closed-loop power control period based on the AMC parameter value after the linear average processing and the power control mode of the current closed-loop power control period.

In a second aspect, embodiments of the present application further provide a power control method, including:

acquiring a power adjustment value indicated by network equipment; the power adjustment value is determined by the network equipment according to the adaptive modulation coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period;

and performing power control according to the power adjustment value.

In a third aspect, embodiments of the present application further provide a base station, including a memory, a transceiver, and a processor;

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Optionally, according to the network device of one embodiment of the present application, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically includes:

Optionally, according to the network device of one embodiment of the present application, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically further includes:

Optionally, according to a network device of one embodiment of the present application, the AMC parameter value is an MCS level value.

Optionally, according to a network device of one embodiment of the present application, the AMC parameter value is a signal to interference and noise ratio SINR value corresponding to an MCS level.

In a fourth aspect, embodiments of the present application further provide a terminal, including a memory, a transceiver, and a processor;

and performing power control according to the power adjustment value.

In a fifth aspect, embodiments of the present application further provide a power control apparatus, including:

the first acquisition module is used for acquiring the adaptive modulation coding AMC parameter value of the current closed-loop power control period; the AMC parameter value is used for representing a modulation and coding strategy MCS of the current closed-loop power control period;

and the determining module is used for determining a power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period.

In a sixth aspect, embodiments of the present application further provide a power control apparatus, including:

The second acquisition module is used for acquiring a power adjustment value indicated by the network equipment; the power adjustment value is determined by the network equipment according to the adaptive modulation coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period;

and the control module is used for carrying out power control according to the power adjustment value.

In a seventh aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the power control method according to the first or second aspect as described above.

According to the power control method, the network equipment, the terminal, the device and the storage medium, based on the MCS level range in the AMC, power consumption and interference are reduced by controlling the too high power transmission, performance is improved by improving the too low power transmission, and BLER is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a power control method according to an embodiment of the present application;

FIG. 2 is a second schematic diagram of a power control method according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a power control device according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a second power control device according to an embodiment of the present application.

Detailed Description

The power control process of the PUSCH is to adjust the transmitting power of the PUSCH, so as to compensate the influences of path loss, shadow fading, fast fading and the like; meanwhile, power control of PUSCH is also used to control interference levels between cells. PUSCH power control consists mainly of two parts, open loop and closed loop. An important part that is indispensable in the closed loop power control process is TPC command update.

The existing standard specifies that TPC commands need to be included in a physical downlink control channel (Physical Downlink Control Channel, PDCCH) with downlink control information (Downlink Control Information, DCI) Format (Format) 0, or in a PDCCH of DCI Format 3/3A and encoded in combination with other TPC commands (in this case cyclic redundancy check (Cyclic Redundancy Check, CRC) check bits of the PDCCH are scrambled by TPC-PUSCH-RNTI). The current PUSCH power control adjustment state is denoted by f (i).

If the UE specific parameter (Accumulation-enabled) notified by the radio resource control (Radio Resource Control, RRC) layer turns on the accumulated-value power control, or TPC command word delta _PUSCH Contained in the PDCCH of DCI Format0 and the CRC check bit scrambled with a Temporary (check) C-RNTI, the calculation formula of f (i) is as follows:

f(i)＝f(i-1)+δ _PUSCH (i-K _PUSCH )

wherein f (i) is the current PUSCH power control adjustment state, δ _PUSCH (i-K _PUSCH ) Finger i-K _PUSCH T of DCI format0 or 3/3A transmission on subframePC commands, f (0) is the initial value after f (i) resets.

K _PUSCH The determination method of the value of (2) is as follows:

for frequency division duplexing (Frequency Division Duplex, FDD), K _PUSCH ＝4；

K for different TDD uplink/downlink (UL/DL) configurations (configurations) 1-6 for time division duplexing (Time Division Duplex, TDD) _PUSCH The values are shown in Table 1.

For TDD UL/DL configuration 0:

when PUSCH transmission scheduled by PDCCH DCI format0 is located in subframe 2 or 7 and the low bit of UL index information field in DCI is 1, K _PUSCH ＝7；

For PUSCH transmissions for other cases, K _PUSCH The values of (2) are determined according to table 1.

TABLE 1K for different TDD UL/DL configurations _PUSCH Value taking

The UE tries to decode the PDCCH of a DCI Format0 with the C-RNTI or SPS-RNTI (semi-persistent scheduling RNTI) of the UE in each discontinuous reception (Discontinuous Reception, DRX) subframe, and also tries to decode the PDCCH of a DCI Format3/3A with the TPC-PUSCH-RNTI of the UE.

If the UE detects PDCCHs of DCI Format0 and DCI Format3/3A simultaneously in the same subframe, the UE only uses TPC command delta given by DCI Format0 _PUSCH 。

When the TPC command is not decoded in a certain subframe, or the UE is in DRX state, or the i-th subframe is not an uplink subframe in TDD mode, δ _PUSCH ＝0dB。

When the correction value delta is accumulated _PUSCH dB contains the adjustment value for PDCCH with DCI format0, see table 2; however, if DCI ForThe function of mat0 is SPS activation or SPS release, then delta _PUSCH ＝0dB。

TABLE 2 DCI Format 0/3TPC Command word meaning

When the correction value delta is accumulated _PUSCH dB contains when PDCCH with DCI format3/3A, its adjustment value set includes two kinds: set 1 is given by table 2, set 2 is given by table 3, and the specific choice of which set is determined by the number of bits of the RRC layer parameter TPC-Index.

Table 3 DCI format 3A TPC Command word meanings

If the UE reaches the maximum transmit power, the "positive" TPC commands are not accumulated;

if the UE reaches the minimum transmit power, the 'negative' TPC command is not accumulated;

the UE in the following state needs to reset the accumulation of TPC commands:

when P _{O_UE_PUSCH} When changed;

when a random access response message is received (in a synchronized/re-synchronized state).

If the UE-specific parameter accounting-enabled configured by the RRC layer does not open the cumulative value mode, the UE is in the absolute closed loop mode, f (i) =δ _PUSCH (i-K _PUSCH ) Wherein delta _PUSCH (i-K _PUSCH ) By sub-frame i-K _PUSCH PDCCH indication with DCI format0 in (b).

K _PUSCH The value of (2) is determined as follows:

for FDD, K _PUSCH ＝4；

For TDD UL/DL configuration 1-6,K _PUSCH The values are shown in table 1;

for TDD UL/DL configuration 0:

when formed by PDCCH DCI formatWhen 0 scheduled PUSCH transmission is located in subframe 2 or 7 and the low bit of UL index information field in DCI is 1, then K _PUSCH ＝7；

For PUSCH transmissions for other cases, K _PUSCH Given in table 1.

Delta in absolute value mode _PUSCH Indicated by PDCCH with DCI format0, δ _PUSCH The values are shown in Table 2; delta if the function of DCI Format0 is SPS activation or SPS release _PUSCH ＝0dB。

F (i) =f (i-1) if a PDCCH with DCI format0 is not decoded in a certain subframe, or the UE is in DRX state, or the i-th subframe is not an uplink subframe in TDD mode.

For two TPC adjustment value f (x) calculation methods (cumulative or absolute), the initial values are set as:

P _{O_UE_PUSCH} when the configuration changes, f (i) =0.

Otherwise, the calculation is performed by the following formula:

f(0)＝ΔP _rampup +δ _msg2

wherein delta _msg2 Is the TPC command word indicated in the random access response message, TPC command word delta for the scheduled PUSCH _msg2 The values of (2) are shown in Table 4. Δprampp is configured by the RRC layer and corresponds to the total amount of power ramp-up from the first to the last preamble transmission.

Table 4 TPC command word delta for scheduled PUSCH _msg2

TPC Command	Value(in dB)
		0	-6
1	-4
		2	-2
3	0
		4	2
5	4
		6	6
7	8

The 5G UE performs PUSCH transmission, and performs transmission power calculation according to the following formula:

(1)P _CMAX,f,c (i) The method comprises the following steps The maximum transmit power calculated by the UE. And the UE combines the maximum transmitting power configured by the high-level parameters, the application scene and the output power determined by the self radio frequency requirement.

(2)P _{O_PUSCH,b,f,c} (j) The method comprises the following steps UE reference transmit power, cell level nominal power parameter P configured by higher layers _{O_NOMINAL_PUSCH,f,c} (j) And UE level nominal power parameter P _{O_UE_PUSCH,b,f,c} (j) Composition is prepared. J is an index associated with the service, and takes the following values:

1. if the UE is not configured with P0-PUSCH-AlphaSet or PUSCH transmission scheduled by RAR UL grant, j=0, P _{O_UE_PUSCH,b,f,c} (0) =0 andP _{O_NOMINAL_PUSCH,f,c} (0)＝P _{O_PRE} +Δ _{PREAMBLE_Msg3} wherein the preamble target received power P _{O_PRE} And msg3 preamble offset delta _{PREAMBLE_Msg3} Specified by the high-level parameters preambleReceivedTargetPower, msg3-DeltaPreamble, Δ if the msg3-DeltaPreamble configuration is not given _{PREAMBLE_Msg3} ＝0dB。

2. If PUSCH transmission configured by configured grant configuration parameters configuredgrantconfigug, j=1, p _{O_NOMINAL_PUSCH,f,c} (1)P _{O_NOMINAL_PUSCH,f,c} (1) Provided by P0-NominalWithoutGrant, or if P0-NominalWithoutGrant does not provide configuration, P _{O_NOMINAL_PUSCH,f,c} (1)＝P _{O_NOMINAL_PUSCH,f,c} (0) And po_ue_pusch, b, f, c (1) obtains the P0-PUSCH-Alpha configuration from the P0-PUSCH-Alpha setid P0 value configuration index of the no-schedule configuration IE ConfiguredGrantConfig. Wherein NominalWithoutGrant is unlicensed Po-nominal, and AlphaSetId is alpha parameter set ID.

3. When J e {2,., J-1} = S _J ,P _{O_NOMINAL_PUSCH,f,c} (j) Specified by the high-level parameter P0-NominalWithGrant, or P when P0-NominalWithGrant is not configured _{O_NOMINAL_PUSCH,f,c} (j)＝P _{O_NOMINAL_PUSCH,f,c} (0) PO_UE_PUSCH, b, f, c (j) obtains the p0-PUSCH-Alpha configuration from the p0 value configuration index specified by the p0-PUSCH-Alpha SetId.

1) If multiple groups of high-level parameters SRI-PUSCH-PowerControl are configured, each group is associated with a P0-PUSCH-AlphaSetId, and if DCI format 0_1 contains an SRI domain, UE selects one group of SRI-PUSCH-PowerControl configuration according to the SRI-PUSCH-PowerControl Id, acquires the P0-PUSCH-AlphaSetId from the SRI-PUSCH-PowerControl configuration, and determines P according to the P0-PUSCH-AlphaSet corresponding to the ID _{O_UE_PUSCH,b,f,c} (j) A. The invention relates to a method for producing a fibre-reinforced plastic composite Wherein PowerControl is power control.

2) If PUSCH transmission is scheduled through DCI format 0_0 or DCI format 0_1 without SRI field, or SRI-puschwanercontrol is not provided for UE, j=2 and P is acquired from the first P0-PUSCH-AlphaSet of P0-AlphaSets list _{O_UE_PUSCH,b,f,c} (j)。

(3)α _b,f,c (j)：

When j=0, α _b,f,c (0) The value is the high-level parameter msg3-Alpha, if the high-level parameter is not configured, alpha _b,f,c (0)＝1。

2.j =1, α _b,f,c (1) The value is the Alpha value in the P0-PUSCH-Alpha set corresponding to the ID configured by the P0-PUSCH-Alpha in the higher layer parameter configuration GrantConfig;

3.j∈S _J When alpha is _b,f,c (j) The value is the alpha value in the P0-PUSCH-alpha set corresponding to the P0-PUSCH-alpha SetId, and the determination method of the P0-PUSCH-alpha SetId is as follows:

1) If multiple groups of high-level parameters SRI-PUSCH-PowerControl are configured, each group is associated with a P0-PUSCH-AlphaSetId, and if DCI format 0_1 contains an SRI domain, UE selects one group of SRI-PUSCH-PowerControl configuration according to the SRI-PUSCH-PowerControl Id, acquires the P0-PUSCH-AlphaSetId from the SRI-PUSCH-PowerControl configuration, and determines alpha according to the P0-PUSCH-AlphaSet corresponding to the ID _b,f,c (j)；

2) If PUSCH transmission is scheduled through DCI format 0_0 or DCI format 0_1 without SRI field, or SRI-puschwanercontrol is not provided for UE, j=2 and a is obtained from the first P0-PUSCH-AlphaSet of the P0-AlphaSet list _b,f,c (j)。

(4)The number of resource blocks on the ith PUSCH transmission opportunity;

(5)PL _b,f,c (q _d ): UE use index q _d The downlink of the reference signal measurement activates the path loss of BWP in dB. Wherein BWP is a bandwidth part. The UE is based on the reference signal q _d The measured downlink activates the path loss of BWP in dB. The reference signal selection flow is as follows:

1. if the PUSCH-PathlossReferenceRS higher layer configuration parameters are not provided for the UE or before the UE is provided with the special higher layer configuration parameters, the UE uses the reference signal of the SS/PBCH used in acquiring the MIB; pathloss reference is the pathloss reference.

2. If multiple sets of reference signal sets are configured for the UE, and each set of parameter signals is associated with CSI-RS (or simultaneously) by SSB-Index associated SSB or CSI-RS-Index, which set of reference signals is specifically used is determined according to PUSCH-pathlos reference RS-Id, the method for determining PUSCH-pathlos reference RS-Id is as follows:

1) If the PUSCH transmission is scheduled through RAR UL grant, the UE uses the same reference signal resource index q as the corresponding PRACH transmission _d ；

2) If multiple groups of higher layer parameters SRI-PUSCH-PowerControl are configured, one PUSCH-PatholossReferenceRS-Id is associated in each group, and if DCI Format0_1 contains one SRI field, the UE finds the associated q based on the SRI-PUSCH-PowerControl Id _d Then according to q _d From determining the associated SSB or CSI-RS reference signal Index SSB-Index or CSI-RS-Index, further determining the cell reference signal resource configuration according to the SSB-Index or CSI-RS-Index, wherein the determined reference symbol resource is a reference symbol set of a serving cell c or a cell designated by pathlossereference linking;

3) If the PUSCH transmission scheduled by DCI format 0_0 and the PUCCH-spatlrelationinfo is configured for the first PUCCH resource of the UE activated BWP by the higher layer, the UE PUSCH uses the RS resource q in the first PUCCH resource _d The method comprises the steps of carrying out a first treatment on the surface of the spatial relation info is spatial relationship information.

4) If there is a PUSCH transmission scheduled by DCI format 0_0 and no PUCCH-spacialrelation info parameter is configured for UE PUCCH transmission, or by DCI format0_1 scheduling without SRI field, or no SRI-PUSCH-PowerControl IE is configured for UE, the UE finally determines the reference signal resource index q _d Equal to 0, corresponding to the reference signal resource on the current serving cell or the serving cell indicated by pathloss reference linking;

5) For the scheduling-free PUSCH transmission, if the ConfiguredGrantConfig IE contains rrc-configurable uplink grant, q _d Equal to the reference signal resource of the current serving cell corresponding to pathloss reference index in the rrc-configurable uplink grant or the serving cell reference signal resource indicated by pathloss reference index;

6) For scheduling-free PUSCH transmission, if the rrc-configurable uplink is not included in ConfiguredGrantConfig IE, the UE finds the PathlossReferenceRS-Id configuration from the resources mapped by the SRI field index value of DCI format0_1 at the time of activation, and if the SRI field is not included in the DCI, the UE finally determines the reference signal resource index q _d Equal to 0, corresponds to the reference signal resource on the current serving cell or serving cell indicated by pathassreferencelinking.

PL _b,f,c (q _d ) =preferenceSignalPower-higher layer filtered RSRP, referenceSignalPower is configured by higher-layer parameters, RSRP is configured by q _d The corresponding reference service cell is measured, and the higher-layer filtering configuration is configured by QuantityConfig of the reference service cell.

If the UE is not configured with periodic CSI-RS reception, the reference signal power is provided by ss-PBCH-BlockPower, and if the UE is configured with periodic CSI-RS reception, the reference signal power is provided by ss-PBCH-BlockPower or PowerControlOffsetSS, and corresponds to SSB transmission power; if no configuration powerControlOffsetSS, UE is provided the offset is 0dB.

(6)Δ _TF,b,f,c (i) The method comprises the following steps Belonging to a closed-loop parameter, the method is used for compensating the change of the received power caused by different modulation and coding schemes and controlling whether the closed-loop parameter is used or not through a higher-layer parameter deltaMCS.

When K is _S When the number of the samples is =1.25,when K is _S ＝0，Δ _TF,b,f,c (i) The value of ks=0, which can be controlled by deltaMCS, by default, ks=0;

when K is _S When=1.25, further determination of BPRE sum is requiredThe value is taken, the BPRE is the number of bits contained by each RE,specific determination method for reflecting UCI carried by PUSCHThe method is as follows:

1. when there is UL-SCH data transmission on PUSCHWhen no transmission of only CSI is made, no UL-SCH data is +. >Wherein: c is a transmission code block, K _r Is the size of code block r, N _RE Is composed ofThe RE quantity calculated by the formula, +.>Is the number of symbols of PUSCH on transmission opportunity i,/->The number of the subcarriers outside the DM-RS subcarriers and the time-frequency domain tracking reference signal point is removed.

2. When the PUSCH contains UL-SCH dataWhen only CSI-RS is transmitted and no UL-SCH data is transmitted

3.Q _m Is the modulation order, R is the target code rate, provided by PUSCH transmission scheduling DCI containing CSI but not UL-SCH.

For single layer transmission only, delta if PUSCH multi-stream transmission _TF,b,f,c (i)＝0。

(7)f _b,f,c (i, l) is a closed loop parameter, which is the power adjustment amount issued by the base station to the UE by TPC command words. The method comprises the following steps:

1.δ _PUSCH,b,f,c (i, l): is a TPC command word value contained in DCI format 0_0 or DCI format 0_1, or in a DCI format2_2TPC command word scrambled using TPC-PUSCH-RNTI.

1) If the UE has two closed loop procedures, two pusch-PC-adaptation states need to be configured, l e {0,1}, if the UE does not configure two pusch-PC-adaptation states, l=0:

1> if PUSCH transmission or retransmission scheduled by configurationgrantconfig, then closed loop procedure number is specified by powercontrolloopconse;

2> if the UE is provided with SRI-PUSCH-PowerControl configuration, the UE finds the associated SRI-PUSCH-closedloop index through the SRI of DCI format 0_1;

3> if PUSCH transmission scheduled using DCI format 0_0 or DCI format 0_1 without SRI field, or SRI-PUSCH-PowerControl is not configured, l=0;

4> if the UE acquires one TPC command word from DCI format 2_2 scrambled by TPC-PUSCH-RNTI, the value of l is provided by the DCI format 2_2 closed loop procedure indication field.

2. The absolute PUSCH power control adjustment value of the closed loop process l is

1)δ _PUSCH,b,f,c The values are shown in Table 5:

TABLE 5 delta _PUSCH,b,f,c Is of the value of (2)

2)Is D _i Sum of all TPC command word values in the set, D _i Is from transmission opportunity i-i ₀ Front K _PUSCH (i-i ₀ ) -1 symbol to K before transmission opportunity i _PUSCH (i) The sum of TPC command words received during the symbol;

3) If the PUSCH is scheduled by DCI format 0_0 or DCI format 0_1, K _PUSCH (i) Is the symbol between the last symbol received from the corresponding PDCCH to the first symbol of the PUSCH transmissionA number;

4) K if PUSCH transmission scheduled by configurable GrantConfig _PUSCH (i) For min { K _PUSCH,min 2}, whereink2 is specified in PUSCH-ConfigCommon IE;

5) If UE transmits opportunities i-i on PUSCH ₀ When the maximum power has been reached andthen f _b,f,c (i,l)＝f _b,f,c (i-i ₀ ,l)；

6) If UE transmits opportunities i-i on PUSCH ₀ When the minimum power has been reached andthen f _b,f,c (i,l)＝f _b,f,c (i-i ₀ ,l)；

7) F when UE resets accumulated value of PUSCH closed loop power control adjustment _b,f,c (k,l)＝0,k＝0,1,...,i。

3. If the closed loop process l employs accumulated power control adjustment, i.e., tpc-Accumulation is configured, then f _b,f,c (i,l)＝δ _PUSCH,b,f,c (i,l)：δ _PUSCH,b,f,c The value is equal to the absolute value formula.

4. If the UE receives a PRACH random access response message, f _b,f,c (0,l)＝ΔP _rampup,b,f,c +δ _msg2,b,f,c Where l=0 and δ _msg2,b,f,c Is the TPC command word value in the random access response grant (should be the TPC command word in DCI Format 0_0); the power ramp-up value is:

wherein DeltaP _{rampuprequested,b,f,c} The maximum ramp-up power representing random access from the first to the last time is provided by the higher layers,is the number of resource blocks corresponding to the first PUSCH transmission. Delta _TF,b,f,c (0) Is the power adjustment value for the first PUSCH transmission.

The power control algorithm of the PUSCH is two parts of the setting of an open loop operating point and the closed loop power control algorithm. Wherein the closed-loop power control is reflected in the parameter f (i), the closed-loop power control power adjustment is determined by the difference between the measured value and the target value, and the target value is different for different users.

The influence factors of AMC are not considered in the closed loop target value of the existing power control algorithm. Because too high or too low a transmit power does not have an appropriate MCS to match its performance, because there are upper and lower limits for the MCS level in AMC. The upper limit of the MCS level causes the problem that the performance is improved and the interference is increased instead of the performance which is necessarily brought along with the power improvement; the lower limit of MCS level results in too low a power and not a proper MCS to match, causing the problem of increased BLER.

In order to solve the deficiencies of the existing schemes, embodiments of the present application propose a power control strategy in combination with AMC. When the channel condition is poor and the MCS level is low, the UE transmitting power is not reduced any more so as not to further reduce the performance. Similarly, when the channel condition is good and the UE does not need a large transmit power, the UE transmit power can be reduced, the influence on the performance of other users can be reduced, and the interference of the local area or the neighboring area can be reduced.

The event or period performs a power protection decision and a specific power adjustment operation, the power adjustment being generated prior to the transmission of the TPC command.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Fig. 1 is one of schematic diagrams of a power control method according to an embodiment of the present application, as shown in fig. 1, where an execution body of the power control method may be a network device, for example, a base station, etc. The method comprises the following steps:

Step 101, obtaining the adaptive modulation coding AMC parameter value of the current closed loop power control period; the AMC parameter value is used to characterize the modulation and coding strategy MCS of the current closed-loop power control period.

Specifically, at the time of system initialization, the remote power control mode flag flag_min_pc_protection=false is set, i.e. the remote power control mode is not entered, and the near power control mode flag flag_max_pc_protection=false is set, i.e. the near power control mode is not entered.

In the current closed-loop power control period, first, the network device acquires the AMC parameter value of the current closed-loop power control period. The AMC parameter value is used to characterize the MCS of the current closed-loop power control period. For example, an MCS level value may be used as the AMC parameter value, or a signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio, SINR) value corresponding to the MCS level may be used.

Step 102, determining a power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period.

Specifically, after determining the AMC parameter value of the current closed-loop power control period, the base station may determine a power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period.

Wherein the power control modes include a far-end power control mode and a near-end power control mode. When flag_min_pc_protect=false, it indicates that the remote power control mode is not entered, and when flag_min_pc_protect=true, it indicates that the remote power control mode is currently entered. When flag_max_pc_protect=false, it indicates that the near-end power control mode is not entered, and when flag_max_pc_protect=true, it indicates that the near-end power control mode is currently entered.

The power adjustment value may be a fixed value or a value determined according to the AMC parameter value.

According to the power control method provided by the embodiment of the application, based on the MCS level range in the AMC, the power consumption and the interference are reduced by controlling the too high power transmission, the performance is improved by improving the too low power transmission, and the BLER is reduced.

Based on any one of the above embodiments, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically includes:

Specifically, in the embodiment of the present application, the specific steps for determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period are as follows:

if flag_min_pc_protect=false and flag_max_pc_protect=false, no power control mode is entered, the following determination is made:

if the AMC parameter value is less than the lower limit value of the minimum target AMC parameter, it is determined that the power adjustment value is greater than zero, and the remote power control mode is entered, i.e., flag_min_pc_detect=true is set.

If the AMC parameter value is greater than the upper limit value of the maximum target AMC parameter, it is determined that the power adjustment value is less than zero, and the near-end power control mode is entered, i.e., flag_max_pc_detect=true is set.

If the flag_min_pc_detect=true and the AMC parameter value is less than the lower limit value of the minimum target AMC parameter in the current closed-loop power control period, it is determined that the power adjustment value is greater than zero.

And if the flag_min_pc_protection=true, the AMC parameter value is larger than or equal to the lower limit value of the minimum target AMC parameter and the AMC parameter value is smaller than the upper limit value of the minimum target AMC parameter in the current closed-loop power control period, determining that the power adjustment value is equal to zero.

If the flag_min_pc_protect=true and the AMC parameter value is equal to or greater than the upper limit value of the minimum target AMC parameter in the current closed-loop power control period, then the power adjustment value is determined to be equal to zero and the remote power control mode is exited, i.e. the flag_min_pc_protect=false is reset.

The magnitudes of the lower limit value of the minimum target AMC parameter and the upper limit value of the minimum target AMC parameter may be configured according to practical situations, and are not limited herein.

According to the power control method provided by the embodiment of the application, the power adjustment value is determined according to the relation between the AMC parameter value and the preset threshold value, so that the power consumption and interference are further reduced, the performance is improved, and the BLER is reduced.

Based on any one of the foregoing embodiments, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically further includes:

Specifically, in the embodiment of the present application, the specific step of determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period further includes:

if the flag_max_pc_detect=true and the AMC parameter value is greater than the upper limit value of the maximum target AMC parameter in the current closed-loop power control period, it is determined that the power adjustment value is less than zero.

And if the flag_max_pc_protection=true and the AMC parameter value is greater than the lower limit value of the maximum target AMC parameter and the AMC parameter value is less than or equal to the upper limit value of the maximum target AMC parameter in the current closed-loop power control period, determining that the power adjustment value is equal to zero.

If the flag_max_pc_protect=true and the AMC parameter value is less than or equal to the lower limit value of the maximum target AMC parameter in the current closed-loop power control period, then the power adjustment value is determined to be equal to zero and the near-end power control mode is exited, i.e. the flag_max_pc_protect=false is reset.

The magnitudes of the lower limit value of the maximum target AMC parameter and the upper limit value of the maximum target AMC parameter may be configured according to practical situations, and are not limited herein.

Based on any of the above embodiments, the AMC parameter value is an MCS level value.

Specifically, in the embodiment of the present application, the AMC parameter value is an MCS level value.

The specific steps for determining the power adjustment value of the next closed-loop power control period based on the MCS level value and the power control mode of the current closed-loop power control period are as follows:

if the MCS level value is less than the lower limit value of the minimum target MCS level, it is determined that the power adjustment value is greater than zero, and the remote power control mode is entered, i.e., flag_min_pc_detect=true is set.

If the MCS level value is greater than the upper limit value of the maximum target MCS level, it is determined that the power adjustment value is less than zero, and the near-end power control mode is entered, i.e., flag_max_pc_detect=true is set.

If the flag_min_pc_detect=true and the MCS level value is less than the lower limit value of the minimum target MCS level in the current closed loop power control period, it is determined that the power adjustment value is greater than zero.

And if the flag_min_pc_protection=true and the MCS level value is greater than or equal to the lower limit value of the minimum target MCS level and the MCS level value is less than the upper limit value of the minimum target MCS level in the current closed-loop power control period, determining that the power adjustment value is equal to zero.

If the flag_min_pc_protection=true and the MCS level value is equal to or greater than the upper limit value of the minimum target MCS level in the current closed-loop power control period, determining that the power adjustment value is equal to zero and exiting the remote power control mode, i.e., resetting the flag_min_pc_protection=false.

The magnitudes of the lower limit value of the minimum target MCS level and the upper limit value of the minimum target MCS level may be configured according to actual situations, which are not limited herein.

If the flag_max_pc_detect=true and the MCS level value is greater than the upper limit value of the maximum target MCS level within the current closed loop power control period, it is determined that the power adjustment value is less than zero.

If the flag_max_pc_protection=true and the MCS level value is greater than the lower limit value of the maximum target MCS level and the MCS level value is less than or equal to the upper limit value of the maximum target MCS level in the current closed-loop power control period, it is determined that the power adjustment value is equal to zero.

If the flag_max_pc_protection=true and the MCS level value is less than or equal to the lower limit value of the maximum target MCS level in the current closed-loop power control period, the power adjustment value is determined to be equal to zero and the near-end power control mode is exited, i.e. the flag_max_pc_protection=false is reset.

The magnitudes of the lower limit value of the maximum target MCS level and the upper limit value of the maximum target MCS level may be configured according to actual situations, and are not limited herein.

According to the power control method provided by the embodiment of the application, the power adjustment value is determined according to the relation between the MCS level value and the preset threshold value, so that the power consumption and the interference are further reduced, the performance is improved, and the BLER is reduced.

Based on any of the above embodiments, the AMC parameter value is a signal-to-interference-and-noise ratio SINR value corresponding to an MCS level.

Specifically, in the embodiment of the present application, the AMC parameter value is the SINR value corresponding to the MCS level.

The specific steps for determining the power adjustment value of the next closed-loop power control period based on the SINR value and the power control mode of the current closed-loop power control period are as follows:

if the SINR value is less than the lower limit of the minimum target SINR, it is determined that the power adjustment value is greater than zero, and the remote power control mode is entered, i.e., flag_min_pc_detect=true is set.

If the SINR value is greater than the upper limit of the maximum target SINR, then it is determined that the power adjustment value is less than zero and the near-end power control mode is entered, i.e., flag_max_pc_detect=true is set.

If the flag_min_pc_detect=true and the SINR value is less than the lower limit for the minimum target SINR during the current closed loop power control period, then it is determined that the power adjustment value is greater than zero.

And if the flag_min_pc_protection=true, the SINR value is larger than or equal to the lower limit value of the minimum target SINR and the SINR value is smaller than the upper limit value of the minimum target SINR in the current closed-loop power control period, determining that the power adjustment value is equal to zero.

If the flag_min_pc_guard=true and the SINR value is equal to or greater than the upper limit of the minimum target SINR during the current closed loop power control period, then determining that the power adjustment value is equal to zero and exiting the far end power control mode, i.e., resetting the flag_min_pc_guard=false.

The magnitudes of the lower limit value of the minimum target SINR and the upper limit value of the minimum target SINR may be configured according to practical situations, which are not limited herein.

If the flag_max_pc_detect=true and the SINR value is greater than the upper limit of the maximum target SINR during the current closed loop power control period, then it is determined that the power adjustment value is less than zero.

And if the flag_max_pc_protection=true and the SINR value is greater than the lower limit value of the maximum target SINR and the SINR value is less than or equal to the upper limit value of the maximum target SINR in the current closed-loop power control period, determining that the power adjustment value is equal to zero.

If the flag_max_pc_guard=true and the SINR value is less than or equal to the lower limit of the maximum target SINR during the current closed loop power control period, then the power adjustment value is determined to be equal to zero and the near end power control mode is exited, i.e., the flag_max_pc_guard=false is reset.

The magnitudes of the lower limit value of the maximum target SINR and the upper limit value of the maximum target SINR may be configured according to practical situations, which are not limited herein.

According to the power control method provided by the embodiment of the application, the power adjustment value is determined according to the relation between the SINR value and the preset threshold value, so that the power consumption and interference are further reduced, the performance is improved, and the BLER is reduced.

Specifically, in the embodiment of the present application, the determining the power adjustment value of the next closed-loop power control period based on the AMC parameter value and the power control mode of the current closed-loop power control period specifically includes:

first, a smoothing process is performed on a plurality of AMC parameter values in a current closed-loop power control period.

Taking the AMC parameter value as an MCS level value as an example, the calculation formula of the smoothing process is as follows:

EMCS _{PRB_K} ＝βEMCS _{PRB_K-1} +(1-β)MCS _{PRB_k}

wherein EMCS _{PRB_K} To smooth the Kth MCS level value, EMCS _{PRB_K-1} To smooth the K-1 MCS level value, the MCS _{PRB_K} And (3) taking the value of the Kth MCS level determined for scheduling in the uplink scheduling module, wherein beta is a smoothing factor.

Then, a power adjustment value of the next closed-loop power control period is determined based on the smoothed AMC parameter value and the power control mode of the current closed-loop power control period.

According to the power control method, the AMC parameter values are smoothed, so that the power consumption and interference are further reduced, the performance is improved, and the BLER is reduced.

First, a linear averaging process is performed on a plurality of AMC parameter values in a current closed-loop power control period.

Then, a power adjustment value of the next closed-loop power control period is determined based on the linear-average-processed AMC parameter value and the power control mode of the current closed-loop power control period.

Based on any of the above embodiments, in the current closed loop power control period, if flag_min_pc_detect=true, the remote power control mode is entered:

if Δpower is positive, power Δpower needs to be increased, and TPC command word delta is sent _PUSCH 。

Otherwise, the delta power is 0, the absolute value mode is closed-loop power control, and the last TPC command is kept unchanged; the accumulation mode is closed loop power control, and the TPC command is 0.

If flag_max_pc_detect=true, enter the near-end power control mode:

if Δpower is negative, the power Δpower is reduced and TPC command word delta is sent _PUSCH 。

Otherwise, executing the normal closed loop power control flow.

Based on any of the foregoing embodiments, fig. 2 is a schematic diagram of a power control method according to the embodiment of the present application, and as shown in fig. 2, the embodiment of the present application provides a power control method, and an execution subject of the method may be a terminal. The method comprises the following steps:

step 201, obtaining a power adjustment value indicated by a network device; the power adjustment value is determined by the network device according to the adaptive modulation and coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period.

And 202, performing power control according to the power adjustment value.

Specifically, the power control method provided in this embodiment of the present application is the same as the method described in the foregoing corresponding embodiment, and can achieve the same technical effects, and the difference is only that the execution main body is different, so that the parts and beneficial effects of the embodiment that are the same as those of the foregoing corresponding method embodiment are not specifically repeated.

Based on any of the foregoing embodiments, fig. 3 is a schematic structural diagram of a network device according to an embodiment of the present application, as shown in fig. 3, where the network device includes a memory 320, a transceiver 300, and a processor 310:

A memory 320 for storing a computer program; a transceiver 300 for transceiving data under the control of the processor 310; a processor 310 for reading the computer program in the memory 320 and performing the following operations:

Specifically, the transceiver 300 is used to receive and transmit data under the control of the processor 310.

Wherein in fig. 3, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 310 and various circuits of memory represented by memory 320, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 300 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 310 is responsible for managing the bus architecture and general processing, and the memory 320 may store data used by the processor 310 in performing operations.

The processor 310 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

It should be noted that, the network device provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method and achieve the same technical effects, and the same parts and beneficial effects as those of the embodiment of the method in the embodiment are not described in detail herein.

Specifically, the network device provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method, and can achieve the same technical effects, and the parts and beneficial effects that are the same as those of the embodiment of the method in the embodiment are not described in detail herein.

Based on any of the foregoing embodiments, fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present application, as shown in fig. 4, where the network device includes a memory 420, a transceiver 400, and a processor 410:

a memory 420 for storing a computer program; a transceiver 400 for transceiving data under the control of the processor 410; a processor 410 for reading the computer program in the memory 420 and performing the following operations:

and performing power control according to the power adjustment value.

Specifically, the transceiver 400 is configured to receive and transmit data under the control of the processor 410.

Wherein in fig. 4, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 410 and various circuits of memory represented by memory 420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 400 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including transmission media including wireless channels, wired channels, optical cables, and the like. The user interface 430 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 410 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 410 in performing operations.

Alternatively, the processor 410 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multicore architecture.

The processor is configured to execute any of the methods provided in the embodiments of the present application by invoking a computer program stored in a memory in accordance with the obtained executable instructions. The processor and the memory may also be physically separate.

Based on any of the foregoing embodiments, fig. 5 is one of schematic diagrams of a power control apparatus according to an embodiment of the present application, as shown in fig. 5, where the power control apparatus includes a first obtaining module 501 and a determining module 502, where:

The first obtaining module 501 is configured to obtain an adaptive modulation and coding AMC parameter value of a current closed-loop power control period; the AMC parameter value is used for representing a modulation and coding strategy MCS of the current closed-loop power control period; the determining module 502 is configured to determine a power adjustment value of a next closed-loop power control period based on the AMC parameter value and a power control mode of a current closed-loop power control period.

Specifically, the power control device provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method, and can achieve the same technical effects, and the parts and beneficial effects that are the same as those of the embodiment of the method in the embodiment are not described in detail herein.

Based on any of the above embodiments, fig. 6 is a second schematic diagram of a power control device according to an embodiment of the present application, as shown in fig. 6, the power control device includes a second obtaining module 601 and a control module 602, where:

the second obtaining module 601 is configured to obtain a power adjustment value indicated by the network device; the power adjustment value is determined by the network equipment according to the adaptive modulation coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period; the control module 602 is configured to perform power control according to the power adjustment value.

It should be noted that the division of the units/modules in the embodiments of the present application is merely a logic function division, and other division manners may be implemented in practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Based on any one of the foregoing embodiments, the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to perform the method provided in the foregoing embodiments, where the method includes:

acquiring an adaptive modulation coding AMC parameter value of a current closed-loop power control period; the AMC parameter value is used for representing a modulation and coding strategy MCS of the current closed-loop power control period; and determining a power adjustment value of a next closed-loop power control period based on the AMC parameter value and a power control mode of a current closed-loop power control period.

Or comprises:

acquiring a power adjustment value indicated by network equipment; the power adjustment value is determined by the network equipment according to the adaptive modulation coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period; and performing power control according to the power adjustment value.

It should be noted that: the processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

In addition, it should be noted that: in the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may each be made between a network device and a terminal device using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of power control, comprising:

determining a power adjustment value of a next closed-loop power control period based on the AMC parameter value and a power control mode of a current closed-loop power control period; the power control modes include a far-end power control mode and a near-end power control mode.

2. The power control method according to claim 1, wherein the determining the power adjustment value of the next closed loop power control period based on the AMC parameter value and the power control mode of the current closed loop power control period specifically comprises:

3. The power control method according to claim 2, wherein the determining the power adjustment value of the next closed loop power control period based on the AMC parameter value and the power control mode of the current closed loop power control period, specifically further comprises:

4. A power control method according to any of claims 1-3, characterized in that the AMC parameter value is an MCS level value.

5. A power control method according to any one of claims 1-3, characterized in that the AMC parameter value is a signal to interference and noise ratio SINR value corresponding to an MCS level.

6. A power control method according to any of claims 1-3, characterized in that said determining a power adjustment value for a next closed loop power control period based on said AMC parameter value and a power control mode of a current closed loop power control period, in particular comprises:

7. A power control method according to any of claims 1-3, characterized in that said determining a power adjustment value for a next closed loop power control period based on said AMC parameter value and a power control mode of a current closed loop power control period, in particular comprises:

8. A method of power control, comprising:

acquiring a power adjustment value indicated by network equipment; the power adjustment value is determined by the network equipment according to the adaptive modulation coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period; the power control modes include a far-end power control mode and a near-end power control mode;

and performing power control according to the power adjustment value.

9. A network device comprising a memory, a transceiver, and a processor;

10. The network device according to claim 9, wherein the determining the power adjustment value of the next closed loop power control period based on the AMC parameter value and the power control mode of the current closed loop power control period, specifically comprises:

11. The network device according to claim 10, wherein said determining a power adjustment value for a next closed loop power control period based on said AMC parameter value and a power control mode of a current closed loop power control period, in particular further comprises:

12. The network device according to any of claims 9-11, wherein the AMC parameter value is an MCS level value.

13. The network device according to any of claims 9-11, wherein the AMC parameter value is a signal to interference and noise ratio, SINR, value corresponding to an MCS level.

14. The network device according to any of claims 9-11, wherein said determining a power adjustment value for a next closed loop power control period based on said AMC parameter value and a power control mode of a current closed loop power control period, in particular comprises:

15. The network device according to any of claims 9-11, wherein said determining a power adjustment value for a next closed loop power control period based on said AMC parameter value and a power control mode of a current closed loop power control period, in particular comprises:

16. A terminal comprising a memory, a transceiver, and a processor;

and performing power control according to the power adjustment value.

17. A power control apparatus, comprising:

A determining module, configured to determine a power adjustment value of a next closed-loop power control period based on the AMC parameter value and a power control mode of a current closed-loop power control period; the power control modes include a far-end power control mode and a near-end power control mode.

18. A power control apparatus, comprising:

the second acquisition module is used for acquiring a power adjustment value indicated by the network equipment; the power adjustment value is determined by the network equipment according to the adaptive modulation coding AMC parameter value of the last closed-loop power control period and the power control mode of the last closed-loop power control period; the power control modes include a far-end power control mode and a near-end power control mode;

19. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 8.