CN113301635B

CN113301635B - Method and equipment for controlling uplink power

Info

Publication number: CN113301635B
Application number: CN202110679193.8A
Authority: CN
Inventors: 付景兴; 喻斌; 钱辰; 熊琦
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2017-07-03
Filing date: 2018-01-12
Publication date: 2023-06-20
Anticipated expiration: 2038-01-12
Also published as: CN113301635A

Abstract

The application discloses a method of an uplink power control method, which is applied to UE, and comprises the following steps: determining the timing relation between a power control command and an uplink physical control channel for performing power control by applying the power control command; and adjusting the transmission power of the corresponding uplink physical control channel according to the determined timing relation and the power control command. The application also discloses corresponding equipment. The application of the method and the device can solve the problem of uplink power control.

Description

Method and equipment for controlling uplink power

The present application is a divisional application of the invention patent application with the application date of 2018, 1-12, the application number of 201810031000.6 and the invention name of "a method and an apparatus for uplink power control".

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a method and apparatus for uplink power control.

Background

Long term evolution (LTE, long Term Evolution) technology supports two duplex modes, frequency Division Duplex (FDD) and Time Division Duplex (TDD). Fig. 1 is a schematic diagram of a frame structure of a TDD system of LTE. Each radio frame is 10 milliseconds (ms) in length and is equally divided into two half frames of length 5ms, each half frame contains 8 time slots of length 0.5ms and 3 special domains of length 1ms, the 3 special domains are respectively a downlink pilot time slot (DwPTS, downlink pilot time slot), a Guard interval (GP, guard period) and an uplink pilot time slot (UpPTS, uplink pilot time slot), and each subframe is composed of two consecutive time slots.

The transmission in the TDD system includes: transmissions from a base station to a User Equipment (UE) (referred to as downlink) and transmissions from a UE to a base station (referred to as uplink). Based on the frame structure shown in fig. 1, 10 subframes are shared between uplink and downlink in every 10ms, and each subframe is allocated to either uplink or downlink, and the subframe allocated to uplink is called an uplink subframe, and the subframe allocated to downlink is called a downlink subframe. In the TDD system, 7 uplink and downlink configurations are supported, as shown in table 1, D represents a downlink subframe, U represents an uplink subframe, and S represents the above special subframe including 3 special domains.

TABLE 1

Hybrid automatic repeat request Acknowledgement (HARQ-ACK, hybrid Automatic Repeat request-Acknowledgement) information for a physical downlink shared channel (PDSCH, physical Downlink Shared Channel) may be on a physical uplink shared channel (PUSCH, physical Uplink Sha)red Channel) or physical uplink control Channel (PUCCH, physical Uplink Control Channel) transmission. For the PDSCH-to-PUCCH timing relationship, the PUCCH indicates HARQ-ACK for PDSCH or SPS release in downlink subframe n-k, assuming the UE feeds back HARQ-ACK information in the PUCCH of uplink subframe n. Where K ε K, the value of K is defined in Table 2, K is M elements { K ₀ ,k ₁ ,…k _M-1 The set of the sequence numbers and the TDD uplink and downlink configuration are called a downlink association set (Downlink association set), and the element k is called a downlink association element. Hereinafter, the downlink subframe corresponding to the downlink association set is simply referred to as Bundling Window (Bundling Window), that is, for all elements K in K, a set { n-K, K e K } formed by n-K. In the PUCCH subframes, one PUCCH resource feedback HARQ-ACK information is allocated for each PDSCH of each downlink subframe. For FDD, M equals 1 and k equals 4.

TABLE 2

According to the existing LTE specifications, the transmission power of the PUCCH channel in subframe i of serving cell c is determined according to the following equation:

wherein the definition of the parameters in the formula is detailed in chapter 5.1.2.1 of version 10.9.0 of the third generation partnership project (3rd Generation Partnership Project,3GPP) specification 36.213 and is briefly described as follows:

P _CMAX,c (i) Is the maximum transmission power on the configured UE's serving cell c;

Δ _{F_PUCCH} (F) Is the power offset relative to the reference format (in LTE the reference format is PUCCH format 1 a);

Δ _TxD (F') is a parameter related to PUCCH format and whether transmit diversity is employed;

PL _c is the link loss;

P _{O_PUCCH} is the power offset value of the higher layer signaling configuration;

g (i) is the accumulated value of the closed loop power control;

h(n _CQI ,n _HARQ ,n _SR ) Is a power offset, is related to the PUCCH format and is related to the number of bits of uplink control information (Uplink Control Information, UCI) that needs to be fed back, n _CQI Is the number of bits of channel state information (Channel State Information, CSI), n, to be fed back in subframe i _SR Is the bit number of the scheduling request (Scheduling Request, SR) to be fed back in the subframe i, and takes the value of 0 or 1, n _HARQ The number of bits of the effective hybrid automatic repeat request Acknowledgement (HARQ-ACK) to be actually fed back in subframe i. For PUCCH format 3, for example, when feedback CSI is required,

g (i) is according to the formula

And obtaining the product.

Where i is the current subframe.

For FDD, M equals 1 and k ₀ Equal to 4;

for TDD, M and k _m Obtained according to table 2. For example, for TDD uplink downlink configuration 1, m equals 2, k for uplink subframe 2 ₀ Equal to 6,k ₁ Equal to 7, that is, the PUCCH transmitted in subframe 2, the PDSCH generating the HARQ-ACK is transmitted on subframes (2-6+10=6) and subframes (2-7+10=5), and the power control command of

subframes

5, 6 of the last radio frame is applied to the PUCCH transmission of subframe 2 of the current radio frame, as shown in fig. 2.

δ _PUCCH Is a power adjustment value obtained from a transmit power control command (TPC command). The TPC commands include TPC commands in downlink control information (DCI, downlink Control Information) in PDCCH scheduling PDSCH (e.g., DCI format 1A), and TPC commands in DCI shared by multiple UEs (e.g., DCI format 3/3A), also referred to as UE-gr An oup DCI. The correspondence between TPC commands and power adjustment values is shown in table 3, table 4.

TABLE 3 Table 3

Values of TPC command field in DCI format 3A	δ _PUCCH [dB]
		0	-1
1	1

TABLE 4 Table 4

Disclosure of Invention

The present application provides a method performed by a terminal in a communication system, the method comprising: determining the transmission power of the first Physical Uplink Shared Channel (PUSCH) transmission; and performing the first PUSCH transmission based on the transmission power, wherein the transmission power of the first PUSCH transmission is determined based on a sum of at least one transmission power control TPC command value received over a duration, the at least one TPC command value not being used to determine a transmission power of a second PUSCH transmission earlier than the first PUSCH transmission, wherein the at least one TPC command value is included in at least one of downlink control information, DCI, or group, DCI, used to schedule PUSCH transmissions.

The application provides a terminal in a communication system, the terminal comprising: a transceiver; and a controller coupled with the transceiver and configured to: determining the transmission power of the first Physical Uplink Shared Channel (PUSCH) transmission; and performing the first PUSCH transmission based on the transmission power, wherein the transmission power of the first PUSCH transmission is determined based on a sum of at least one transmission power control TPC command value received over a duration, the at least one TPC command value not being used to determine a transmission power of a second PUSCH transmission earlier than the first PUSCH transmission, wherein the at least one TPC command value is included in at least one of downlink control information, DCI, or group, DCI, used to schedule PUSCH transmissions.

The present application provides a method performed by a base station in a communication system, the method comprising: a first physical uplink shared channel, PUSCH, transmission is received from a terminal, wherein a transmission power of the first PUSCH transmission is determined based on a sum of at least one transmission power control, TPC, command value received by the terminal over a duration, the at least one TPC command value not being used to determine a transmission power of a second PUSCH transmission earlier than the first PUSCH transmission, wherein the at least one TPC command value is included in at least one of downlink control information, DCI, or group, DCI, used to schedule PUSCH transmissions.

The application provides a base station in a communication system, the base station comprising: a transceiver; and a controller coupled with the transceiver and configured to: a first physical uplink shared channel, PUSCH, transmission is received from a terminal, wherein a transmission power of the first PUSCH transmission is determined based on a sum of at least one transmission power control, TPC, command value received by the terminal over a duration, the at least one TPC command value not being used to determine a transmission power of a second PUSCH transmission earlier than the first PUSCH transmission, wherein the at least one TPC command value is included in at least one of downlink control information, DCI, or group, DCI, used to schedule PUSCH transmissions.

The application provides a method and equipment for uplink power control, so that the power control of a PUCCH is more effective.

The method for controlling uplink power, provided by the application, is applied to UE and comprises the following steps:

determining the timing relation between a power control command and an uplink physical control channel for performing power control by applying the power control command;

and adjusting the transmission power of the corresponding uplink physical control channel according to the determined timing relation and the power control command.

Preferably, the power control command is: a user equipment group (UE) -group power control command, a Downlink Control Information (DCI) transmits at least one power control command, and each power control command is aimed at one UE;

and the UE determines the timing relation between the UE-group power control command and a Physical Uplink Control Channel (PUCCH) for carrying out power control by receiving explicit signaling or implicit signaling from a base station or by a preset method.

Preferably, the method for receiving the display command from the base station includes:

the UE-group power control command is transmitted in a time slot n-k, the PUCCH applying the power control command to adjust the power is transmitted in the time slot n, the UE obtains a k value through an explicit signaling received from a base station, k is an integer greater than or equal to 0, and the k value is the same or different for different UEs in the same group;

Or, the UE-group power control command is transmitted in a time slot n-k, the PUCCH to which the power control command is applied to adjust the power is transmitted in the time slot n, the UE obtains the k value by combining explicit signaling and physical layer signaling, or obtains the k value by physical layer signaling, and k is an integer greater than or equal to 0.

Preferably, the means for obtaining the k value through physical layer signaling includes at least one of the following means:

mode one: the set of power control command TPC timing relationships for different UEs transmitting power control commands in the same UE-group DCI are the same; in addition to the power control command of each UE, the DCI of the UE-group power control command has TPC timing relation indication information, and the UE determines a value in a TPC timing relation set as a time interval ki between the UE-group power control command of the UE and the PUCCH to which the UE-group power control command is applied for adjusting power according to the TPC timing relation indication information, where the time interval value indicated by the TPC timing relation indication information is applied to all UEs in the UE-group;

mode two: the TPC timing relation sets of different UEs transmitting power control commands in the same UE-group DCI are different; in addition to the power control command of each UE, the DCI of the UE-group power control command has TPC timing relationship indication information, and the UE determines a value in a corresponding TPC timing relationship set as a time interval ki between the UE-group power control command of the UE and the PUCCH to which the UE-group power control command is applied for adjusting power according to the TPC timing relationship indication information, where the time interval value indicated by the TPC timing relationship indication information is applied to all UEs in the UE-group;

Mode three: the TPC timing relation sets of different UEs transmitting power control commands in the same UE-group DCI are the same or different; in addition to the power control command of each UE, the DCI of the UE-group power control command also has TPC timing relation indication information corresponding to each UE, and each UE determines, according to the TPC timing relation indication information, a value in the corresponding TPC timing relation set as a time interval ki between the UE-group power control command of the UE and the PUCCH to which the UE-group power control command is applied to adjust power.

Preferably, there are at least two PUCCHs in one slot for time division multiplexed transmission;

the timing relationship between the power control command and the uplink control channel for performing power control by applying the power control command is as follows: and a timing relation between DCI for transmitting TPC and PUCCH for performing power control by applying the TPC, wherein the TPC comprises TPC in UE-group public DCI.

Preferably, the adjusting the transmission power of the corresponding uplink physical control channel according to the determined timing relationship and the power control command includes: determining TPC corresponding to each PUCCH according to the timing relation between the DCI for transmitting the TPC and the PUCCH for carrying out power control by applying the TPC, and calculating the accumulated value of closed loop power control of each PUCCH according to the determined TPC.

Preferably, the accumulated value of closed loop power control for each PUCCH is calculated according to at least one of the following methods:

the method comprises the following steps: for each PUCCH according to

Calculating an accumulated value g_n (i) of closed loop power control, n being a sequence number of the PUCCH, and g (i-1) being equal to an accumulated value of closed loop power control of a last PUCCH in a time slot i-1; wherein: delta _PUCCH The power adjustment value is obtained according to the TPC command; m is the total number of TPC commands directed to slot i; m is m _i Refers to time slots i-m _i The TPC commands of the time slots do not meet the latency processing requirements, and the TPC commands of the time slots cannot be applied to calculate g_n (i);

the second method is as follows: according to

Calculating an accumulated value g (i) of closed loop power control of the at least two PUCCHs; wherein: delta _PUCCH The power adjustment value is obtained according to the TPC command; m is the total number of TPC commands directed to slot i; m is m _i Refers to time slots i-m _i The TPC commands of (a) do not meet the latency processing requirements, and the TPC commands of this time slot cannot be applied to calculate g (i).

Preferably, the adjusting the transmission power of the corresponding uplink physical control channel according to the determined timing relationship and the power control command includes: for each PUCCH, according to a TPC timing relation, performing power control on the PUCCH by using TPC commands which are not applied to the calculation of the accumulated value of the previous closed loop power control in the corresponding DCI and TPC commands which are not applied to the calculation of the accumulated value of the previous closed loop power control in the DCI before the DCI.

Preferably, when DCI-1 transmitting TPC command TPC-1 is transmitted in time slot n-k-l, DCI-2 transmitting TPC command TPC-2 is transmitted in time slot n-k, and PUCCH-1 applying TPC-1 for power control is transmitted in time slot n+p, PUCCH-2 applying TPC-2 for power control is transmitted in time slot n, the PUCCH is power controlled according to at least one of the following methods:

the method comprises the following steps: benefit (benefit)Power adjustment value delta obtained by TPC-1 and TPC-2 _PUCCH (1) And delta _PUCCH (2) Calculating an accumulated value of closed loop power control of PUCCH-2 transmitted in slot n;

the second method is as follows: calculating an accumulated value of closed loop power control of the PUCCH-1 by using the TPC-1; the TPC-2 is used to calculate the accumulated value of the closed loop power control of PUCCH-2.

The application also provides an uplink power control device, which comprises: a timing relationship determination module and a power control module, wherein:

the timing relation determining module is used for determining the timing relation between a power control command and an uplink physical control channel for performing power control by applying the power control command;

the power control module is used for adjusting the transmission power of the corresponding uplink physical control channel according to the determined timing relation and the power control command.

The uplink power control method and the uplink power control device can provide a more effective power control method when determining that the time slot length of the transmission PUCCH is different from the time slot length of the transmission power control command, so that the power control of the PUCCH is more effective. In addition, with the present application, when there is no determined HARQ timing relationship of PDSCH, the present invention proposes a method of determining a timing relationship between a power control command of a UE group and PUCCH to which the power control command transmission is applied.

Drawings

Fig. 1 is a schematic diagram of a frame structure of a TDD system of LTE;

fig. 2 is a schematic diagram of an example of HARQ-ACK timing relationship for LTE;

FIG. 3 is a schematic diagram of a basic flow of power control timing relationship determination in the present application;

fig. 4 is a schematic diagram of a timing relationship between a power control command and adjusting power by applying the power control command when k values of different UEs in the same group in the embodiment of the present application are the same;

fig. 5 is a schematic diagram of a timing relationship between a power control command and a power adjustment by applying the power control command when k values of different UEs in the same group are different in the embodiment of the present application;

fig. 6 is a schematic diagram of a timing relationship between a power control command and a power adjustment by applying the power control command when k values of different UEs in the same group are different in the case of FDD according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a first manner of determining a set of timing relationships and indicating a specific time interval value in the set by physical layer signaling according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a second method for determining a set of timing relationships and indicating a specific time interval value in the set by physical layer signaling according to an embodiment of the present application;

fig. 9 is a schematic diagram of a third way of determining a set of timing relationships and indicating a specific time interval value in the set through physical layer signaling according to an embodiment of the present application;

Fig. 10 is a schematic diagram of transmission of at least two PUCCHs in a time slot according to a time division multiplexing mode in a second embodiment of the present application;

fig. 11 is a schematic diagram of a method for calculating the accumulated values of closed loop power control of two PUCCHs in the same slot in the second embodiment of the present application;

fig. 12 is a schematic view of an application scenario in a third embodiment of the present application;

fig. 13 is a schematic structural diagram of a preferred uplink power control device according to the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and examples.

In order to achieve the object of the present application, the present application proposes a method for uplink power control, as shown in fig. 2, the method includes the following steps:

step 301: determining the timing relation between a power control command and an uplink physical control channel to which the power control command is applied;

step 302: and adjusting the transmission power of the uplink physical control channel according to the power control command according to the determined timing relation between the power control command and the uplink physical control channel.

At this time, the timing relationship between the PDSCH scheduled by the DCI and the PUCCH transmitting the HARQ-ACK generated by the PDSCH is dynamically indicated by information in the DCI.

The technical solution of the present application will be described in further detail below by means of several preferred embodiments.

Example 1

The present embodiment describes a timing relationship between a power control command of a UE-group and uplink PUCCH transmission to which the power control command is applied for power control, where the power control command refers to a common power control command of a UE group (UE-group) (e.g., a power control command of DCI format 3/3A transmission of LTE), and one DCI may provide the power control command for PUCCHs of multiple UEs. The PUCCH herein may be used to transmit HARQ-ACK, CSI, UCI of SR, and the like.

At this time, the timing relationship between the PDSCH and the HARQ-ACK generated by the PDSCH is determined by the DCI indication in the PDCCH scheduling the PDSCH in combination with the higher layer signaling configuration. For example, the base station configures 4 values to the UE through higher layer signaling, respectively: { k0, k1, k2, k3}, the 2 bits included in the DCI indicate that the timing relationship between the PDSCH and the HARQ-ACK generated by the PDSCH is an index of one element of the set { k0, k1, k2, k3}, the PDSCH is transmitted in the slot n-ki, and the HARQ-ACK is transmitted in the slot n, as shown in table 5. And respectively configuring independent timing relation sets for different UEs through independent high-layer signaling. At this time, TPC commands included in DCI in PDCCH of scheduled PDSCH are also determined according to the timing relationship, for example, PDSCH is transmitted in slot n-ki, HARQ-ACK generated by PDSCH is transmitted in slot n, and TPC commands in PDCCH of PDSCH scheduled for transmission in slot n-ki are applied to power control of PUCCH for transmission of HARQ-ACK in slot n. This is a method of performing power control by TPC included in DCI in PDCCH of scheduling PDSCH, which is directed to only one UE.

HARQ-ACK timing relationship indicationValue of	PDSCH transmission and HARQ-ACK transmission time interval ki
		00	K0 of high layer signaling configuration
01	K1 of high layer signaling configuration
		10	K2 of high layer signaling configuration
11	K3 of high layer signaling configuration

TABLE 5

Still another method for transmitting power control commands is to transmit at least one power control command per DCI for one UE, referred to as a UE-group power control command, the DCI being for at least one UE. At this time, since the timing relationship between the PDSCH and the HARQ-ACK generated by the PDSCH is dynamically indicated by the DCI in the PDCCH scheduling the PDSCH, and is no longer a certain timing relationship, at this time, the timing relationship between the DCI transmitting the UE-group power control command and the PUCCH to which the UE-group power control command adjustment power is applied does not exist, and therefore, it is necessary to determine a timing relationship, and thus apply the UE-group power control command to adjust the power of the PUCCH according to the timing relationship.

In this case, how the UE determines a timing relationship between the UE-group power control command and the PUCCH to which the UE-group power control command is applied to adjust power is described below. The UE may determine the timing relationship between the UE-group common power control command and the PUCCH transmission to which the power control command is applied by using explicit signaling (including system information, higher layer signaling, media access layer signaling, or physical layer signaling, etc.), implicit signaling, and a method preset by a protocol, that is, the UE-group common power control command is transmitted in time slot n-k, and the PUCCH to which the power control command is applied is transmitted in time slot n, to determine the timing relationship, that is, determine the k value. Several methods of determining the timing relationship between the UE-group common power control commands and the power-adjusted PUCCH transmissions to which these power control commands are applied are described in detail below.

The method comprises the following steps:

the UE obtains a timing relationship between the UE-group power control commands and PUCCH transmission to which the power control commands are applied by receiving explicit signaling (e.g., system information, higher layer signaling) transmitted by the base station, that is, the UE-group power control commands are transmitted in time slot n-k, the PUCCH to which the power control commands are applied to adjust power is transmitted in time slot n, and the UE obtains k value by receiving explicit signaling (e.g., system information, higher layer signaling) transmitted by the base station, where k is an integer greater than or equal to 0. When the k value is configured by the higher layer signaling, the k value may be configured by common higher layer signaling or UE-specific higher layer signaling. The k values may be the same for different UEs in a group, which may make the transmission more convenient in the case of TDD, as shown in fig. 4, otherwise, if the k values are different for different UEs, it may be inconvenient. For example, assuming that UE-group DCI including a power control command is transmitted in a slot n, k value of UE1 is k1, slot n+k1 of UE1 is an uplink slot, PUCCH may be transmitted, k value of UE2 is k2, and slot n+k2 of UE2 is a downlink slot, PUCCH cannot be transmitted, as shown in fig. 5, which may be inconvenient. The k values may also be different for different UEs in a group, so that in the case of FDD, the power may be adjusted more flexibly for different needs of different UEs, for example, UE-group DCI containing a power control command is transmitted in slot n, k value of UE1 is k1, the power control command of UE1 may be applied to power adjustment of PUCCH transmitted in slot n+k1, k value of UE2 is k2, and the power control command of UE2 may be applied to power adjustment of PUCCH transmitted in slot n+k2, as shown in fig. 6.

Or the k value is preset and determined through a protocol, and the k value is the same for different UEs.

This approach is relatively easy to implement and requires relatively little signaling overhead, but the timing relationship cannot be adjusted relatively flexibly.

The second method is as follows:

there is a timing relationship between the transmission of UE-group power control commands and the PUCCH transmission to which these power control commands are applied to adjust power, that is, the UE-group power control commands are transmitted in time slot n-k, the PUCCH to which these power control commands are applied is transmitted in time slot n, the UE obtains k value by means of explicit signaling and physical layer signaling, or by means of physical layer signaling, k is an integer greater than or equal to 0, and this timing relationship is called TPC timing relationship. For example, the UE obtains a set of timing relationships through explicit signaling (e.g., system information, higher layer signaling), e.g., the set of timing relationships is { k0, k1, k2, k3}, called TPC timing relationship set, and then indicates, through physical layer signaling, a specific time interval value in the set, a correspondence between the TPC timing relationship indication value of the UE-group and the UE-group power control command and the time interval ki for applying the UE-group power control command, as shown in table 6. The method can dynamically adjust the timing relation between the UE-group power control command and the PUCCH transmission applying the power control command to adjust the power, and can adjust the power more timely.

TPC timing relation instruction value of UE-group	UE-group power control command and time interval ki for applying UE-group power control command
		00	k0
01	k1
		10	k2
11	k3

TABLE 6

Several ways of determining the set of timing relationships and indicating a particular time interval value in the set by physical layer signaling are described below.

Mode one:

the set of timing relationships for UEs transmitting power control commands in the same UE-group DCI is the same, the UEs are obtained through explicit signaling (e.g., system information, higher layer signaling), e.g., the set of timing relationships is { k0, k1, k2, k3}. In addition to transmitting the power control command of each UE in the DCI for transmitting the UE-group power control command, a specific TPC timing relationship indication information for indicating a value in the set of timing relationships as a time interval ki between the UE-group power control command of the UE and the PUCCH to which the UE-group power control command is applied, where the time interval value indicated by the timing relationship indication information is applied to all UEs in the UE-group, that is, a time interval ki between the UE-group power control command of all UEs in the group and the PUCCH to which the UE-group power control command is applied, as shown in fig. 7, for example, information in the DCI for transmitting the UE-group is { TPC1, TPC2, …, TPCn, …, TPCn, and the TPC timing relationship indication information }, where N indicates that the DCI for applying the UE-group power control command contains N power control commands, and the timing relationship indication information field of the UE-group includes L bits (for example, the time interval ki between the UE-group power control command and the PUCCH to which the UE-group power control command is applied is indicated by the corresponding to the time interval value indicated by the UE-group power control command of 6).

Mode two:

the TPC timing relation sets of different UEs transmitting power control commands in the same UE-group DCI are different, for example, the UE obtains the TPC timing relation set of the UE through explicit signaling (e.g., higher layer signaling), or the TPC timing relation set of the UE transmitting the power control commands in the UE-group DCI is the same as the HARQ timing relation set of the UE, for example, the TPC timing relation set of UE1 is { k0_1, k1_1, k2_1, k3_1}, and the TPC timing relation set of UE2 is { k0_2, k1_2, k2, k3_3}. In addition to transmitting the power control command of each UE, the DCI for transmitting the UE-group power control command also transmits TPC timing relationship indicating information of a specific UE-group, where the TPC timing relationship indicating information value of the UE-group is the same for all UEs in the UE-group, but since the timing relationship sets of different UEs are different, the time interval ki between the UE-group power control command of each UE and the PUCCH to which the UE-group power control command is applied may also be different. The time interval values of different UEs are applied to different UEs, that is, the time interval ki between the UE-group power control command and the application UE-group power control command of each UE in the group is indicated, as shown in fig. 8, for example, the information in the transmitted DCI is { TPC1, TPC2, …, TPCn, …, TPCn, TPC timing relation indication information of UE-group }, N indicates that the DCI of the UE-group power control command contains N power control commands, the TPC timing relation indication information field of UE-group includes 2 bits, and the correspondence between the TPC timing relation indication information value of UE-group and the time interval between the UE-group power control command and the PUCCH to which the UE-group power control command is applied for adjusting power is shown in table 7 ki. For example, the TPC timing relation indicator value of UE-group is 01, and for UE1, the time interval between the UE-group power control command and PUCCH to which the UE-group power control command is applied to adjust power is k1_1; for UE2, the time interval between the UE-group power control command and the PUCCH to which the UE-group power control command adjustment power is applied is k1_2.

TPC timing relation instruction value of UE-group	Time interval ki of UE1	Time interval ki of UE2	…	Time interval ki of UEN
					00	k0_1	k0_2	k0_N
01	k1_1	k1_2		k1_N
					10	k2_1	k2_2	k2_N
11	k3_1	k3_2		k3_N

TABLE 7

The method can dynamically adjust the time interval between the UE-group power control command and the application UE-group power control command, is easy to realize and requires less signaling overhead.

Mode three:

the TPC timing relationship sets of UEs transmitting power control commands in the same UE-group DCI are different or identical, e.g., the UE obtains the TPC timing relationship set of the UE through explicit signaling (e.g., system information, or higher layer signaling), or the TPC timing relationship set of the UE transmitting power control commands in the UE-group DCI is identical to the HARQ timing relationship set of the UE, e.g., the TPC timing relationship set of UE1 is { k0_1, k1_1, k2_1, k3_1} and the TPC timing relationship set of UE2 is { k0_2, k1_2, k2_2, k3_3}. In addition to transmitting the power control command of each UE, the DCI for transmitting the UE-group power control command also transmits TPC timing relationship indication information of a specific UE-group corresponding to each UE. The TPC timing relationship indication information of different UEs is applied to different UEs, that is, indicates a time interval ki between a UE-group power control command of the UE and a PUCCH to which the UE-group power control command adjustment power is applied, as shown in fig. 9, for example, the information in the transmitted DCI is { TPC1, TPC timing relationship indication information 1 of the UE-group, TPC2, TPC timing relationship indication information 2 of the UE-group, …, TPCN, TPC timing relationship indication information N of the UE-group }, N represents that the DCI of the UE-group power control command includes N power control commands, each TPC timing relationship indication information field of the UE-group includes 2 bits, and the correspondence relationship between the TPC timing relationship indication information value of the UE-group and the time interval ki between the UE-group power control command and the PUCCH to which the UE-group power control command adjustment power is applied is shown in table 8.

TPC timing relation instruction value of UE-group of UE1	Time of UE1Spacing ki
		00	k0_1
01	k1_1
		10	k2_1
11	k3_1

TABLE 8

The method can dynamically adjust the time interval between the UE-group power control command and the application UE-group power control command, and respectively determine TPC timing relation according to different UE conditions, and the required signaling overhead is relatively large.

And a third method:

the UE obtains the timing relation between the UE-group power control command and the PUCCH transmission applying the power control commands to adjust the power by receiving the implicit signaling sent by the base station, that is, the UE-group power control command is transmitted in a time slot n-k, the PUCCH applying the power control commands to adjust the power is transmitted in the time slot n, the UE obtains a k value by receiving the implicit signaling sent by the base station, and k is an integer greater than or equal to 0.

For example, assume that UEs have been configured with a set of HARQ timing relationships, and then each UE selects a value of one determined element in the set of HARQ timing relationships for that UE as a time interval k value between the UE-group power control commands for that UE and PUCCH transmissions to which these power control commands are applied to adjust power. For example, the value of the time interval k between the UE-group power control commands of the UE and the PUCCH transmission to which these power control commands are applied to adjust power is the smallest value (or largest value; or smallest value; and slot n is the uplink slot; or largest value; and slot n is the uplink slot) in the set of HARQ timing relationships. For example, if the set of HARQ timing relationships of the UE is {1,2,3,4}, and the minimum value in the set of HARQ timing relationships is 1, the time interval between the UE-group power control command of the UE and the PUCCH transmission to which the power adjustment command is applied is 1. Or alternatively. For example, the value of the time interval k between the UE-group power control commands of the UE and the PUCCH transmission to which these power control command adjustment powers are applied is the first value in the set of HARQ timing relationships, e.g., the set of HARQ timing relationships of the UE is {1,2,3,4}, the first value in the set of HARQ timing relationships is 1, and the time interval between the UE-group power control commands of the UE and the PUCCH transmission to which these power control command adjustment powers are applied is 1.

This approach does not require additional physical layer signaling overhead, but does not allow for relatively flexible adjustment of the timing relationship.

The method of determining the time interval between the UE-group power control commands and the PUCCH transmission to which these power control command adjustment powers are applied is applicable to determining the time interval between the UE-group power control commands and the PUSCH transmission to which these power control command adjustment powers are applied, except that the UE-group power control commands for PUCCH are replaced with UE-group power control commands for PUSCH, PUCCH is replaced with PUSCH, and the set of UE-configured HARQ timing relationships is replaced with the set of UE-configured time intervals between UL DCI and PUSCH scheduled by the DCI.

The method four:

the UE obtains a timing relationship between the UE-group power control commands and PUCCH transmissions to which these power control commands are applied to adjust power using a default HARQ timing relationship, where the default HARQ timing relationship refers to a timing relationship between a PDSCH scheduled by a PDCCH of a common search space and HARQ transmissions of the PDSCH, which may be preset by a protocol or indicated by system information. That is, the PDSCH scheduled by the PDCCH of the common search space is transmitted in the slot n-k, and the HARQ transmission of the PDSCH is in the slot n, and then the UE receives the UE-group power control command in the slot n-k, and applies the UE-group power control command to the slot n.

Example two

In a New wireless (NR) communication system, there are introduced a plurality of PUCCH transmissions in one slot, for example, two time division multiplexed PUCCH transmissions in one slot n, the former PUCCH being denoted as PUCCH-1 and the latter PUCCH being denoted as PUCCH-2, as shown in fig. 10. At this time, the timing relationship between DCI for transmitting TPC and uplink UCI for power control using the TPC is set in a unit of slot, for example, DCI including TPC is transmitted in slot n and uplink UCI for power control using the TPC is transmitted in slot n+k. The TPC here includes TPC in DCI of the scheduled PDSCH, and TPC in UE-group common DCI. How to perform power control of multiple PUCCHs in one slot at this time is as follows.

The method comprises the following steps:

when at least two PUCCHs in one slot are transmitted in a time division multiplexing manner, an accumulated value g (i) of closed loop power control is calculated for each PUCCH, respectively. For example, there are two time division multiplexed PUCCH transmissions in one slot i, the former PUCCH being denoted PUCCH-1, the latter PUCCH being denoted PUCCH-2, the accumulated value of closed loop power control being denoted g_1 (i) for PUCCH-1, and the accumulated value of closed loop power control being denoted g_2 (i) for PUCCH-2. Delta _PUCCH Is a power adjustment value obtained from a transmission power control command (TPC command), g_1 (i) and g_2 (i) may be according to the formula

And->

Calculated separately, where m _i Refers to time slots i-m _i The TPC commands of (a) do not meet the latency processing requirements.

Specifically, if there are multiple PUCCH transmissions in slot i-1, g (i-1) is equal to the accumulated value of closed loop power control for the last PUCCH in slot i-1, e.g., there are two time division multiplexed PUCCH transmissions in one slot i-1, the former PUCCH is denoted as PUCCH-1, the latter PUCCH is denoted as PUCCH-2, the accumulated value of closed loop power control is denoted as g_1 (i-1) for PUCCH-1, and the accumulated value of closed loop power control is denoted as g_2 (i-1) for PUCCH-2, then g (i-1) is equal to g_2 (i-1).

Here M is the total number of power control commands directed to slot i. For example, M is equal to 3, and power control commands TPC-0, TPC-1 and TPC-2 are received in slots i-k0, i-k1 and i-k2, respectively, and delta is calculated from the power control commands TPC-0, TPC-1 and TPC-2, respectively _PUCCH (i-k0)，δ _PUCCH (i-k1)，δ _PUCCH (i-k 2), and m _i Refers to time slots i-m _i The TPC commands of (1) do not meet the latency processing requirements, and the TPC commands of this time slot cannot be applied to calculate g_1 (i).

For example, as shown in fig. 11, a long PUCCH is denoted as PUCCH-1, a short PUCCH is denoted as PUCCH-2, and a transmission is performed in slot n, and power control commands TPC-0, TPC-1, and TPC-2 are received in slot n, slot n-1, and slot n-2, respectively. For long PUCCH-1, the power control commands TPC-1 and TPC-2 of slots n-1 and n-2 meet the delay requirement, which can be used to obtain the power adjustment value delta _PUCCH (n-1)，δ _PUCCH (n-2) and the power control command TPC-0 of slot n before the UE receives, the UE has started transmitting the long PUCCH-1, and thus the power control command TPC-0 of slot n gets the power adjustment value δ _PUCCH (n) cannot be used to calculate the accumulated value g_1 (n) of the closed loop power control of PUCCH-1, therefore, g_1 (n) =g (n-1) +δ _PUCCH (n-1)+δ _PUCCH (n-2); for the short PUCCH-2, slot n-1 and slot n-2, the power control commands TPC-0, TPC-1 and TPC-2 meet the delay requirement, which can be used to obtain the power adjustment value delta _PUCCH (n)，δ _PUCCH (n-1)，δ _PUCCH (n-2) and then calculating an accumulated value of the closed loop power control using the power adjustment value, thus g_2 (n) =g (n-1) +δ _PUCCH (n)+δ _PUCCH (n-1)+δ _PUCCH (n-2). And g (n) calculated for the accumulated value of the closed loop power control of time slot n+1 is equal to g_2 (n). The above TPC command may be a TPC command included in DCI in PDCCH of scheduling PDSCH, or may be a TPC command in UE-group common DCI.

The second method is as follows:

when at least two PUCCHs in one slot are transmitted in a time division multiplexing manner, an accumulated value g (i) of closed loop power control is uniformly calculated for each PUCCH. For example, there are two time division multiplexed PUCCH transmissions in one slot i, the former PUCCH being denoted as PUCCH-1, the latter PUCCH being denoted as PUCCH-2, the accumulated value of closed loop power control being the same for PUCCH-1 and PUCCH-2, denoted as g (i). Delta _PUCCH Is a power adjustment value obtained from a transmit power control command (TPC command), g (i) may be according to the formula

And (5) calculating to obtain the product.

In particular, the method comprises the steps of,

where M is the total number of power control commands directed to slot i, e.g., M equals 3, and power control commands TPC-0, TPC-1 and TPC-2 are received at slots i-k0, i-k1 and i-k2, respectively, and delta is calculated from the power control commands TPC-0, TPC-1 and TPC-2, respectively _PUCCH (i-k0)，δ _PUCCH (i-k1)，δ _PUCCH (i-k 2), and m _i Refers to time slots i-m _i The TPC commands of the time slots cannot be applied to calculate g (i) because the TPC commands of the time slots do not meet the delay processing requirements of at least one PUCCH power control. For example, as shown in fig. 11, a long PUCCH is denoted as PUCCH-1, a short PUCCH is denoted as PUCCH-2, and a transmission is performed in slot n, and power control commands TPC-0, TPC-1, and TPC-2 are received in slot n, slot n-1, and slot n-2, respectively. For the long PUCCH-1, the power control commands TPC-1 and TPC-2 of slots n-1 and n-2 meet the latency requirement, while the power control command TPC-0 of slot n already starts transmitting the long PUCCH-1 before the UE receives, so the power adjustment value delta obtained by the power control command TPC-0 of slot n _PUCCH (n) cannot meet the latency requirement of the power control of PUCCH-1; for short PUCCH-2, slot n-1 and slot n-2 power control commands TPC-0, TPC-1 and TPC-2 meet the latency requirement of the PUCCH-2 power control, i.e., only slots n-1 and n-2 power control The control commands TPC-1 and TPC-2 simultaneously satisfy the delay requirements of the power control of PUCCH-1 and PUCCH-2, while the slot n power control command TPC-0 does not satisfy the delay requirement of the power control of PUCCH-1, so the power adjustment value δ obtained with TPC-1 and TPC-2 _PUCCH (n-1)，δ _PUCCH (n-2) calculating an accumulated value of closed loop power control, g (n) =g (n-1) +δ _PUCCH (n-1)+δ _PUCCH (n-2)。

Example III

In a New wireless (NR) communication system, there may be a case where DCI for transmitting a TPC command precedes another DCI for transmitting a TPC command, and PUCCH transmission for power control using a previously transmitted TPC command follows PUCCH transmission for power control using a subsequently transmitted TPC command. For example, DCI-1 transmitting TPC command TPC-1 is transmitted in slot n-k-l, DCI-2 transmitting TPC command TPC-2 is transmitted in slot n-k, PUCCH-1 applying TPC-1 for power control is transmitted in slot n+p, and PUCCH-2 applying TPC-2 for power control is transmitted in slot n, as shown in FIG. 12.

How to perform power control of the PUCCH at this time is as follows.

The method comprises the following steps:

for power control of PUCCH transmitted in slot n, slot n-k is used _m TPC commands in the transmitted DCI (require that the TPC not be applied to the calculation of the accumulated value of the previous closed loop power control, time slots n-k according to TPC timing relationship _m TPC commands in the transmitted DCI applied to power control of PUCCH transmitted in slot n) and in slot n-k _m TPC commands in previously transmitted DCI (requiring calculation of accumulated values for which the TPC was not applied to previous closed loop power control, time slots n-k according to TPC timing relationship) _m TPC commands in DCI transmitted before are applied to power control of PUCCH transmitted in slot n+p, p being a positive integer equal to or greater than 1).

Specifically, as shown in FIG. 12, DCI-1 transmitting TPC command TPC-1 is transmitted in slot n-k-l, DCI-2 transmitting TPC command TPC-2 is transmitted in slot n-k, PUCCH-1 performing power control by TPC-1 is transmitted in slot n+p according to TPC timing relationship, TPC-2 performs powerThe rate-controlled PUCCH-2 is transmitted in slot n, at which time the accumulated value of closed-loop power control of the PUCCH-2 transmitted in slot n is adjusted by the power adjustment value delta obtained by TPC-1 and TPC-2 _PUCCH (1) And delta _PUCCH (2) Calculation is performed, i.e. g (n) =g (n-1) +δ _PUCCH (1)+δ _PUCCH (2). Since TPC-2 is slot n-k _m The TPC command in the transmitted DCI is the TPC for the power control applied to the PUCCH of slot n transmission (this TPC was not applied to the calculation of the accumulated value of the previous closed loop power control), while TPC-1 is slot n-k _m DCI transmitted before and in time slot n-k according to TPC timing relation _m The TPC command in the DCI transmitted before is the TPC for the power control applied to the PUCCH transmitted after slot n (this TPC was not applied to the calculation of the accumulated value of the previous closed loop power control), so the power adjustment value delta obtained with TPC-1 and TPC-2 is used according to the previous method _PUCCH (1) And delta _PUCCH (2) An accumulated value of closed loop power control for the calculated slot n is performed. The accumulated value of closed loop power control of PUCCH-1 transmitted in slot n+p does not utilize TPC-1 to obtain power adjustment value delta _PUCCH (1) A calculation is performed, i.e. g (n+p) =g (n+p-1), since TPC-1 is the slot n-k _m The TPC command in the DCI transmitted before is applied to TPC for power control of PUCCH-1 transmitted in slot n+p, but this TPC-1 was once applied to calculation of the accumulated value of PUCCH-2 closed loop power control before, and thus TPC-1 is no longer applied to calculation of the accumulated value of PUCCH-1 closed loop power control.

Thus, the calculation of the base station transmit power control command is performed chronologically, that is, TPC-2 is calculated based on TPC-1, and thus PUCCH-2 should be power controlled using TPC-1 and TPC-2.

The above TPC timing relationship refers to a timing relationship between DCI transmitting TPC commands and PUCCH to which the TPC is applied for power control. For example, DCI including a TPC command is transmitted in slot n-k, and PUCCH for power control using the TPC command is transmitted in slot n, and the time correspondence between the PUCCH and the DCI is referred to as a TPC timing relationship.

The second method is as follows:

for PUCCH transmitted in slot nPower control in time slots n-k _m DCI is transmitted, and time slots n-k are in accordance with TPC timing relation _m The TPC command in the transmitted DCI is TPC applied to the power control of the PUCCH transmitted in slot n, the calculation of the accumulated value of the PUCCH closed loop power control is based on slot n-k _m TPC in the DCI transmitted is performed. Specifically, as shown in fig. 12, DCI-1 for transmitting TPC command TPC-1 is transmitted in slot n-k-l, DCI-2 for transmitting TPC command TPC-2 is transmitted in slot n-k, PUCCH-1 for power control by TPC-1 is transmitted in slot n+p according to TPC timing relation, PUCCH-2 for power control by TPC-2 is transmitted in slot n, and PUCCH-1 calculates the accumulated value of closed loop power control by TPC-1 transmitted in slot n-k-l by DCI-1; PUCCH-2 calculates the accumulated value of closed loop power control using TPC-2 transmitted in slot n-k by DCI-2.

Example two

In a New wireless (NR) communication system, there are introduced a plurality of PUCCH transmissions in one slot, for example, two time division multiplexed PUCCH transmissions in one slot n, the former PUCCH being denoted as PUCCH-1 and the latter PUCCH being denoted as PUCCH-2. At this time, the timing relationship between DCI for transmitting TPC and uplink UCI for power control using the TPC is set in a unit of slot, for example, DCI including TPC is transmitted in slot n and uplink UCI for power control using the TPC is transmitted in slot n+k.

For TPC in UE-group common DCI, when the UE-group common DCI containing TPC is transmitted in slot n, the TPC is applied for power control in slot n+k transmission, and there are multiple PUCCH transmissions in slot n+k, the TPC command is applied for power control of the first PUCCH in the order of front and back in slot n+k, for example, there are two time division multiplexed PUCCH transmissions in slot n+k, the former PUCCH is denoted as PUCCH-1, the latter PUCCH is denoted as PUCCH-2, and the TPC command is applied for power control of PUCCH-1, as shown in fig. 10.

The TPC command in the DL DCI of the scheduled PDSCH may be the power control of the PUCCH to which the HARQ-ACK generated by the PDSCH is applied, for example, when TPC is included in the DCI of the scheduled PDSCH transmitted in the slot n, the HARQ-ACK generated by the PDSCH is transmitted in the slot n+k, the TPC included in the DCI of the scheduled PDSCH performs the power control of the PUCCH to which the HARQ-ACK generated by the PDSCH is transmitted, for example, the slot n+k has two time division multiplexed PUCCH transmissions, the former PUCCH is denoted as PUCCH-1, the latter PUCCH is denoted as PUCCH-2, the HARQ-ACK generated by the PDSCH is transmitted in PUCCH-2, and the TPC command is applied to the power control of PUCCH-2, as shown in fig. 10.

Corresponding to the above method, the present application also discloses an uplink power control device, whose preferred composition structure is shown in fig. 13, including: a timing relationship determination module and a power control module, wherein:

The timing relation determining module is used for determining the timing relation between a power control command and an uplink control channel for performing power control by applying the power control command;

the power control module is used for adjusting the transmission power of the corresponding uplink control channel according to the determined timing relation and the power control command.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.

Claims

1. A method performed by a terminal in a communication system, the method comprising:

determining the transmission time of a Physical Uplink Shared Channel (PUSCH);

determining a transmit power of a PUSCH transmission based on a sum of an accumulated transmit power control TPC command value of a last PUSCH transmission and a TPC command value received over a duration determined based on the PUSCH transmission occasion; and

and executing the PUSCH transmission at the PUSCH transmission occasion based on the transmission power.

2. The method of claim 1, wherein the TPC command value is included in at least one of downlink control information, DCI, or group, DCI, used to schedule the PUSCH transmission.

3. The method of claim 1, further comprising:

configuration information including information about the offset value is received from the base station via higher layer signaling,

wherein each of the offset values is a time interval between the PUSCH transmission and DCI for scheduling the PUSCH transmission.

4. The method of claim 3, wherein, in the case where the PUSCH transmission occasion is associated with a group DCI, the PUSCH transmission occasion is after a number of symbols determined based on a minimum value of the offset values, starting from a symbol in which the group DCI is received.

5. The method of claim 3, wherein, in the event that the PUSCH transmission occasion is associated with DCI for scheduling PUSCH transmission, the PUSCH transmission occasion is determined based on one of the offset values indicated by the DCI.

6. A method performed by a base station in a communication system, the method comprising:

determining the transmission time of a Physical Uplink Shared Channel (PUSCH); and

data is received from a terminal at the PUSCH transmission occasion based on a transmission power determined based on a sum of an accumulated transmission power control, TPC, command value of a last PUSCH transmission and a TPC command value received for a duration determined based on the PUSCH transmission occasion.

7. The method of claim 6, wherein the TPC command value is included in at least one of downlink control information, DCI, or group DCI, used to schedule the PUSCH transmission.

8. The method of claim 6, further comprising:

configuration information including information about the offset value is transmitted to the terminal via higher layer signaling,

9. The method of claim 8, wherein the PUSCH transmission occasion is after a number of symbols determined based on a minimum of the offset values, starting from a symbol in which the group DCI is transmitted, if the PUSCH transmission occasion is associated with the group DCI.

10. The method of claim 8, wherein the PUSCH transmission occasion is determined based on one of the offset values indicated by the DCI for scheduling PUSCH transmission, if the PUSCH transmission occasion is associated with the DCI.

11. A terminal in a communication system, the terminal comprising:

a transceiver; and

a controller coupled with the transceiver and configured to:

Determining the transmission time of a Physical Uplink Shared Channel (PUSCH);

determining a transmit power for a PUSCH transmission based on a sum of an accumulated transmit power control TPC command value for a last PUSCH transmission and a TPC command value received for a duration determined based on the PUSCH transmission occasion, and

12. The terminal of claim 11, wherein the TPC command value is included in at least one of downlink control information, DCI, or group DCI, used to schedule the PUSCH transmission.

13. The terminal of claim 11, the controller further configured to:

14. The terminal of claim 13, wherein the PUSCH transmission occasion is after a number of symbols determined based on a minimum value of the offset values, starting from a symbol from which the group DCI is received, if the PUSCH transmission occasion is associated with a group groupDCI.

15. The terminal of claim 13, wherein the PUSCH transmission occasion is in combination with a determination of a physical uplink shared channel, PUSCH, transmission occasion; and

in the case of DCI association for scheduling PUSCH transmission, the PUSCH transmission occasion is determined based on one of the offset values indicated by the DCI.

16. A base station in a communication system, the base station comprising:

a transceiver; and

a controller coupled with the transceiver and configured to:

determining PUSCH transmission timing

17. The base station of claim 16, wherein the TPC command value is included in at least one of downlink control information, DCI, or group DCI, used to schedule the PUSCH transmission.

18. The base station of claim 16, the controller further configured to:

19. The base station of claim 18, wherein the PUSCH transmission occasion is after a number of symbols determined based on a minimum of the offset values, starting from a symbol from which the group DCI is transmitted, if the PUSCH transmission occasion is associated with a group groupDCI.

20. The base station of claim 18, wherein, in the event that the PUSCH transmission occasion is associated with DCI for scheduling PUSCH transmission, the PUSCH transmission occasion is determined based on one of the offset values indicated by the DCI.

21. A method performed by a terminal in a communication system, the method comprising:

determining the transmission time of a Physical Uplink Control Channel (PUCCH);

determining a Transmission Power Control (TPC) command value meeting the delay requirement of PUCCH transmission;

determining a transmission power of the PUCCH transmission based on a sum of the TPC command value and an accumulated value of a last PUCCH transmission; and

the PUCCH transmission is performed based on the transmission power on at least one of the PUCCH transmission occasions.

22. The method of claim 21, further comprising:

receiving configuration information from a base station, the configuration information including information on PUCCH resources,

wherein the PUCCH transmission occasion is determined based on the configuration information.

23. The method of claim 21, wherein each of the TPC command values is included in at least one of a group common DCI or a DCI scheduling a physical downlink shared channel, PDSCH.

24. The method of claim 21, wherein the sum of TPC command values is used to adjust a transmit power of the PUCCH transmission.

25. A method performed by a base station in a communication system, the method comprising:

determining the transmission time of a Physical Uplink Control Channel (PUCCH); and

receiving a PUCCH transmission based on a transmission power on at least one of the PUCCH transmission occasions,

the transmission power of the PUCCH transmission is determined by the sum of the accumulated value of the last PUCCH transmission and the Transmission Power Control (TPC) command value meeting the delay requirement of the PUCCH transmission.

26. The method of claim 25, wherein each of the TPC command values is included in at least one of a group common DCI or a DCI scheduling a physical downlink shared channel, PDSCH.

27. The method of claim 25, wherein the sum of TPC command values is used to adjust a transmit power of the PUCCH transmission.

28. A terminal in a communication system, the terminal comprising:

a transceiver; and

a controller coupled with the transceiver and configured to:

determines the transmission opportunity of the physical uplink control channel PUCCH,

determines a transmit power control TPC command value that meets the latency requirement of PUCCH transmission,

determining a transmission power of the PUCCH transmission based on a sum of an accumulated value of a last PUCCH transmission and the TPC command value, and

29. The terminal of claim 28, wherein the controller is configured to:

receiving configuration information from a base station, the configuration information including information on PUCCH resources;

30. The terminal of claim 28, wherein each of the TPC command values is included in at least one of a group common DCI or a DCI scheduling a physical downlink shared channel, PDSCH.

31. The terminal of claim 28, wherein the sum of TPC command values is used to adjust a transmit power of the PUCCH transmission.

32. A base station in a communication system, the base station comprising:

a transceiver; and

a controller coupled with the transceiver and configured to:

determining a Physical Uplink Control Channel (PUCCH) transmission opportunity, and

33. The base station of claim 32, wherein each of the TPC command values is included in at least one of a group common DCI or a DCI scheduling a physical downlink shared channel, PDSCH.

34. The base station of claim 32, wherein the sum of TPC command values is used to adjust a transmit power of the PUCCH transmission.