CN107613557B

CN107613557B - Method, terminal, network equipment and system for determining transmitting power

Info

Publication number: CN107613557B
Application number: CN201610541156.XA
Authority: CN
Inventors: 高雪娟; 刘松涛; 潘学明
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-07-11
Filing date: 2016-07-11
Publication date: 2020-03-24
Anticipated expiration: 2036-07-11
Also published as: CN107613557A; WO2018010488A1

Abstract

The invention provides a method, a terminal, network equipment and a system for determining transmission power, wherein the method comprises the following steps: the terminal acquires a power deviation value corresponding to the first TTI length; the terminal determines a transmit power of a channel transmitted using the first TTI length based on the power offset value. The embodiment of the invention can better support the service types with rich future types. The embodiment of the invention can improve the transmission performance of the communication system.

Description

Method, terminal, network equipment and system for determining transmitting power

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, a network device, and a system for determining transmit power.

Background

With the development and change of the mobile communication service demand, a plurality of organizations such as International Telecommunication Union (ITU) define higher user plane delay performance requirements for future mobile communication systems. The performance of shortening the user plane delay can be achieved by reducing the length of a Transmission Time Interval (TTI). However, in future mobile communication systems, not all traffic transmissions need to be transmitted using TTIs of reduced length, such as: some services may also be transmitted using a TTI that is fixed to be 1 millisecond (ms) in length. That is, in future system communication systems, there may occur a plurality of TTIs with different lengths, for example: TTIs of length 1ms and TTIs of length shorter than 1ms occur. TTIs of different lengths differ in channel estimation, which affects transmission performance. It can be seen that the problem of poor transmission performance exists in the current communication system.

Disclosure of Invention

The invention aims to provide a method, a terminal, network equipment and a system for determining transmission power, which solve the problem of poor transmission performance.

In order to achieve the above object, an embodiment of the present invention provides a transmission power determining method, including:

the terminal acquires a power deviation value corresponding to the first TTI length;

the terminal determines a transmit power of a channel transmitted using the first TTI length based on the power offset value.

Optionally, the first TTI length is equal to 1ms, or the first TTI length is less than 1 ms.

Optionally, the power offset value corresponding to the first TTI length is a power offset value corresponding to the first TTI length separately configured for the terminal in a cell; or

And the power deviation value corresponding to the first TTI length is a power deviation value corresponding to the first TTI length configured for all terminals in a cell.

Optionally, the obtaining, by the terminal, a power offset value corresponding to the first TTI length includes:

the terminal receives a power offset value corresponding to the first TTI length sent by the network equipment; or

The terminal receives a power deviation value corresponding to a second TTI length sent by network equipment and a deviation between the power deviation value corresponding to the first TTI length and the power deviation value corresponding to the second TTI length, and obtains the power deviation value corresponding to the first TTI length by using the power deviation value corresponding to the second TTI length and the deviation.

the terminal acquires a power deviation value corresponding to the first TTI length agreed in advance; or

The terminal obtains a power deviation value corresponding to a second TTI length agreed in advance and the deviation between the power deviation value corresponding to the first TTI length and the power deviation value corresponding to the second TTI length, and obtains the power deviation value corresponding to the first TTI length by using the power deviation value corresponding to the second TTI length and the deviation.

Optionally, the method further includes:

if a first TTI with the first TTI length and a second TTI with the second TTI length exist in the same subframe, the terminal acquires a power offset value corresponding to the second TTI length;

and the terminal determines the transmission power of the channel transmitted by using the second TTI length based on the power offset value corresponding to the second TTI length.

and the terminal determines a first TTI length of the channel and acquires a power offset value corresponding to the first TTI length.

Optionally, the determining, by the terminal, the transmission power of the channel transmitted using the first TTI length based on the power offset value includes:

and the terminal determines the transmission power of the channel transmitted by using the first TTI length according to a preset transmission power calculation formula, wherein the transmission power calculation formula comprises the power deviation value.

Optionally, the determining, by the terminal, the transmission power of the channel transmitted by using the first TTI length according to a preset transmission power calculation formula includes:

the terminal determines the transmit power of a channel transmitted using the first TTI length by:

wherein, P_PUSCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, M, of the terminal_PUSCH(i) For the number of uplink resource blocks RB allocated to the terminal, P_{O_PUSCH}(j) From P_{O_NOMINAL_PUSCH}(j) And P_{O_UE_PUSCH}(j) Sum composition, P_{O_NOMINAL_PUSCH}(j) Normalizing the initial power value, P, for cell-specific_{O_UE_PUSCH}(j) The initial value of the power of the exclusive part of the terminal is j is a parameter corresponding to a system scheduling mode, α is a cell-specific path loss compensation coefficient, and PL is the downlink path loss estimated by the terminal;

wherein, K_SIs configured by radio resource control RRC, corresponding to the current transmission format, BPRE is the cell specific parameter corresponding to the modulation coding mode,

f (i) is a cell specific parameter, and f (i) is an adjustment value for the current power control; delta_PUSCHA power offset value corresponding to the first TTI length;

or

wherein, P_PUCCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, P, of the terminal_{0_PUCCH}From P_{0_NOMINAL_PUCHH}And P_{0_UE_PUCCH}Sum composition, P_{0_NOMINAL_PUCHH}Normalizing the initial power value, P, for cell-specific_{0_UE_PUCCH}For the initial value of the terminal-specific part power, PL is the estimated downlink path loss of the terminal, h (n)_CQI,n_HARQ,n_SR) Configuring independent parameters, delta, corresponding to Channel Quality Indication (CQI) information bit (bit) number, Hybrid Automatic Repeat reQuest (HARQ) information bit number and Scheduling ReQuest (SR) in transmission frame format_{F_PUCCH}(F) For cell-specific parameters, Δ_TxD(F') is the terminal specific parameter;

for Frequency Division Duplexing (FDD), g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For Time-Division Duplexing (TDD),

where g (i) is the current channel power control modulation value, K_PUCCHPredefining parameters for the system, corresponding to TDD uplink and downlink configuration, k_mParameters predefined for the system, corresponding to the transmission frame structure, δ_PUCCHFor the dedicated correction value of the terminal, M is a value corresponding to the TDD frame structure, Delta_PUCCHIs the power offset value.

Optionally, the channel includes one or more of the following:

a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a short Physical Uplink Shared Channel (sPUSCH), a short Physical Uplink Control Channel (sPUCCH), and a Channel Sounding Reference Signal (SRS) transmission Channel.

The embodiment of the invention also provides a method for determining the transmitting power, which comprises the following steps:

the network equipment sends an indication message used for determining a power offset value corresponding to a first TTI length to a terminal, so that the terminal obtains the power offset value corresponding to the first TTI length and determines the transmission power of a channel transmitted by using the first TTI length based on the power offset value.

Optionally, the indication message sent by the network device to the terminal for determining the power offset value corresponding to the first TTI length includes:

a power offset value corresponding to the first TTI length sent by the network equipment to the terminal; or

And the network equipment sends a power deviation value corresponding to a second TTI length and the deviation between the power deviation value corresponding to the first TTI length and the power deviation value corresponding to the second TTI length to the terminal, so that the terminal uses the power deviation value corresponding to the second TTI length and the deviation to obtain the power deviation value corresponding to the first TTI length.

Optionally, if a first TTI with the first TTI length and a second TTI with the second TTI length exist in the same subframe, the indication message is further used to determine a power offset value corresponding to the second TTI length, so that the terminal determines, based on the power offset value corresponding to the second TTI length, a transmission power of a channel transmitted by using the second TTI length;

or

The method further comprises the following steps:

if the first TTI with the first TTI length and the second TTI with the second TTI length exist in the same subframe, the network device sends an indication message used for determining a power offset value corresponding to the second TTI length to the terminal, so that the terminal determines the transmission power of a channel transmitted by using the second TTI length based on the power offset value corresponding to the second TTI length.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

An embodiment of the present invention further provides a terminal, including:

a first obtaining module, configured to obtain a power offset value corresponding to a first TTI length;

a first determining module to determine a transmit power of a channel transmitted using the first TTI length based on the power offset value.

Optionally, the first obtaining module is configured to receive a power offset value corresponding to the first TTI length sent by a network device; or

The first obtaining module is configured to receive a power offset value corresponding to a second TTI length sent by a network device, and a deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length, and obtain the power offset value corresponding to the first TTI length by using the power offset value corresponding to the second TTI length and the deviation.

Optionally, the first obtaining module is configured to obtain a power offset value corresponding to the predetermined first TTI length; or

The first obtaining module is configured to obtain a power offset value corresponding to a second TTI length agreed in advance, and a deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length, and obtain the power offset value corresponding to the first TTI length by using the power offset value corresponding to the second TTI length and the deviation.

Optionally, the terminal further includes:

a second obtaining module, configured to obtain a power offset value corresponding to a second TTI length if a first TTI of the first TTI length and a second TTI of the second TTI length exist in a same subframe;

a second determining module, configured to determine a transmit power of a channel transmitted using the second TTI length based on a power offset value corresponding to the second TTI length.

Optionally, the first obtaining module is configured to determine a first TTI length of the channel, and obtain a power offset value corresponding to the first TTI length.

Optionally, the first determining module is configured to determine the transmit power of the channel transmitted by using the first TTI length according to a preset transmit power calculation formula, where the transmit power calculation formula includes the power offset value.

Optionally, the first determining module is configured to determine the transmission power of the channel transmitted using the first TTI length by:

or

The first determining module is configured to determine a transmit power of a channel transmitted using the first TTI length by:

wherein, P_PUCCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, P, of the terminal_{0_PUCCH}From P_{0_NOMINAL_PUCHH}And P_{0_UE_PUCCH}Sum composition, P_{0_NOMINAL_PUCHH}Normalizing the initial power value, P, for cell-specific_{0_UE_PUCCH}For the initial value of the terminal-specific part power, PL is the estimated downlink path loss of the terminal, h (n)_CQI,n_HARQ,n_SR) For the independent parameter, Delta, corresponding to the number of CQI information bits, the number of HARQ information bits and the SR configuration in the transmission frame format_{F_PUCCH}(F) For cell-specific parameters, Δ_TxD(F') is the terminal specific parameter;

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

where g (i) is the current channel power control modulation value, K_PUCCHPredefining parameters for the system, corresponding to TDD uplink and downlink configuration, k_mParameters predefined for the system, corresponding to the transmission frame structure, δ_PUCCHFor the terminal-specific correction value, M is Δ corresponding to the TDD frame structure_PUCCHIs the power offset value.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

An embodiment of the present invention further provides a network device, including:

the terminal comprises a first sending module, a second sending module and a control module, wherein the first sending module is used for sending an indication message used for determining a power offset value corresponding to a first TTI length to the terminal, so that the terminal can determine the transmission power of a channel transmitted by using the first TTI length based on the power offset value.

Optionally, the first sending module is configured to send a power offset value corresponding to the first TTI length to the terminal; or

The first sending module is configured to send a power offset value corresponding to a second TTI length and a deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length to the terminal, so that the terminal obtains the power offset value corresponding to the first TTI length by using the power offset value corresponding to the second TTI length and the deviation.

or

The network device further includes:

and a second sending module, configured to send, to the terminal, an indication message for determining a power offset value corresponding to a second TTI length if a first TTI of the first TTI length and a second TTI of the second TTI length exist in the same subframe, so that the terminal determines, based on the power offset value corresponding to the second TTI length, transmission power of a channel transmitted using the second TTI length.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

An embodiment of the present invention further provides a transmission power determining system, including:

the network equipment is used for sending an indication message used for determining a power offset value corresponding to the first TTI length to the terminal;

the terminal is configured to obtain a power offset value corresponding to the first TTI length according to the indication message, and determine, based on the power offset value, transmission power of a channel transmitted using the first TTI length.

The technical scheme of the invention at least has the following beneficial effects:

in the embodiment of the invention, the terminal acquires the power offset value corresponding to the first TTI length; the terminal determines a transmit power of a channel transmitted using the first TTI length based on the power offset value. Because the power offset value corresponding to the TTI length is introduced when the transmitting power of the channel is determined, the performance difference caused by the channel estimation difference is compensated, and the transmission performance of the communication system is improved.

Drawings

Fig. 1 is a schematic diagram of a network structure according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of a method for determining transmit power according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of another method for determining transmit power according to an embodiment of the present invention;

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

fig. 5 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another network device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a transmission power determination system according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, fig. 1 is a schematic diagram of a network structure provided by an embodiment of the present invention, as shown in fig. 1, including one or more terminals 11 and a network device 12, where one terminal 11 is illustrated in the drawing by way of example. The terminal 11 may be a terminal side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that a specific type of the terminal 11 is not limited in the embodiment of the present invention. The terminal 11 may establish communication with the network device 12, where the network in the drawing may indicate that the terminal 11 wirelessly establishes communication with the network device 12, and the network device 12 may be an evolved node B (eNB) or another base station, or may be a network side device such as an access point device, and it should be noted that a specific type of the network device 12 is not limited in this embodiment of the present invention.

Based on the network structure shown in fig. 1, an embodiment of the present invention provides a method for determining transmit power, as shown in fig. 2, including the following steps:

201. the terminal acquires a power deviation value corresponding to the first TTI length;

202. the terminal determines a transmit power of a channel transmitted using the first TTI length based on the power offset value.

In this embodiment of the present invention, the power offset value corresponding to the first TTI length may be configured in advance by the terminal, for example: the power offset value corresponding to the first TTI length may be a default value corresponding to the first TTI length. Or the power offset value corresponding to the first TTI length may be obtained dynamically, for example: receiving a network device temporary configuration or indication. Of course, the power offset value corresponding to the first TTI length may also be predetermined and agreed by the terminal and the network device, and the embodiment of the present invention is not limited thereto. In addition, different TTI lengths can correspond to different power offset values in the embodiment of the invention, so that the power offset value corresponding to the TTI length can be introduced when the transmission power of the channel is determined, so as to compensate performance difference caused by channel estimation difference, and improve the transmission performance of the communication system. In addition, due to the power offset value corresponding to the TTI length introduced when the transmission power is determined, the transmission performance difference caused by the transmission difference of Demodulation Reference signals (DMRS) of different TTI lengths can be compensated, so as to improve the transmission performance of the communication system.

The channel transmitted using the first TTI length may be understood as a channel transmitted using a TTI of the first TTI length, or may be understood as a channel transmitted using a TTI of the first TTI length. In addition, the transmission power may be understood as a transmission power of the terminal when performing the channel transmission.

In this embodiment, it may be implemented that the first TTI length may be 1ms or less than 1ms, for example: the first TTI length may be 0.5ms or 0.3ms, or may be 2, 3, 4, or 7 symbols, etc. Of course, in the embodiment of the present invention, it is not excluded that the first TTI length may be greater than 1ms, and the embodiment of the present invention is not limited thereto. In this embodiment, it may be implemented that a corresponding power offset value is obtained for a TTI length equal to 1ms or less than 1ms, so that a corresponding transmission power may be determined to improve transmission performance.

Optionally, the power offset value corresponding to the first TTI length may be a power offset value corresponding to the first TTI length separately configured for the terminal in a cell.

In this embodiment, it may be implemented that the terminal is configured with one power offset value corresponding to the first TTI length independently, that is, the terminal is configured with a dedicated power offset value corresponding to the first TTI length. In this embodiment, different terminals may configure different power offset values corresponding to the first TTI length, and if the same terminal supports different TTI lengths, the power offset values corresponding to the different TTI lengths may also be configured independently. In this embodiment, since the power offset value is configured for the terminal separately, the channel estimation difference can be further compensated, so as to further improve the transmission performance of the communication system.

Optionally, the power offset value corresponding to the first TTI length is a power offset value corresponding to the first TTI length configured for all terminals in a cell.

In this embodiment, it can be achieved that the power offset values corresponding to the first TTI lengths of all terminals in the same cell are the same. Due to the power offset values corresponding to the first TTI lengths of all terminals in the cell, transmission resources can be saved, for example: the network device can configure the power offset value corresponding to the first TTI length for all terminals in the cell only through the broadcast message.

Optionally, the obtaining, by the terminal, a power offset value corresponding to the first TTI length may include:

and the terminal receives a power offset value corresponding to the first TTI length sent by the network equipment.

In this embodiment, the terminal may receive the power offset value corresponding to the first TTI length sent by the network device, that is, the power offset value corresponding to the first TTI length is configured to the terminal by the network device. For example: the power offset value may be transmitted through configuration signaling, or may be transmitted through a broadcast message, etc.

In this embodiment, the terminal may receive the power offset value corresponding to the second TTI length sent by the network device, and the deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length, and the power offset value corresponding to the first TTI length does not need to be sent, so that transmission overhead may be saved. In this embodiment, the second TTI length is different from the first TTI length, and the second TTI length may be a TTI length that is present in the same subframe or at the same time as the first TTI length, that is, scheduling of two TTI lengths may be present in the terminal in the same subframe. Thus, by the embodiment, different transmission powers can be configured for different TTI lengths to compensate for channel estimation differences, so that the transmission performance of the communication system is improved.

and the terminal acquires a power deviation value corresponding to the first TTI length agreed in advance.

In this embodiment, the power offset value corresponding to the first TTI length agreed in advance may be obtained, so that network equipment does not need to participate in obtaining the power offset, and transmission overhead is saved. In addition, the predetermined may be predetermined by the terminal and the network device.

In this embodiment, the power offset value corresponding to the second TTI length and the deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length may be predetermined, so that transmission overhead may be saved. In this embodiment, the second TTI length is different from the first TTI length, and the second TTI length may be a TTI length that is present in the same subframe or at the same time as the first TTI length, that is, scheduling of two TTI lengths may be present in the terminal in the same subframe. Thus, by the embodiment, different transmission powers can be configured for different TTI lengths to compensate for channel estimation differences, so that the transmission performance of the communication system is improved.

Optionally, the method may further include the steps of:

In this embodiment, if the first TTI and the second TTI exist in the same subframe, the transmission power of the channel transmitted using the second TTI length and the transmission power of the channel transmitted using the first TTI length may be determined respectively. Therefore, different transmitting powers are configured for channels corresponding to different TTI lengths to compensate for channel estimation differences, and the transmission performance of the communication system is improved. In addition, the first TTI and the second TTI in the same subframe may be understood as the first TTI and the second TTI in the terminal. In addition, the presence of the first TTI and the second TTI described above may be understood as the presence of transmissions of the first TTI and the second TTI. In this embodiment, the embodiment of obtaining the power offset value corresponding to the second TTI length and determining the transmission power may refer to obtaining the first TTI length and determining the transmission power corresponding to the first TTI length, which is not described herein again.

In this embodiment, the TTI length of the channel may be determined first, and then the corresponding power offset value may be obtained. For example: the terminal determines the TTI length of the channel according to Downlink Control Information (DCI) for uplink resource scheduling, where the DCI indicates the TTI length of the channel. Of course, in this embodiment, the indication of the TTI length through the DCI is not limited, and the TTI length may also be predetermined by the terminal and the network device, which is not limited in this embodiment of the present invention.

In addition, it should be noted that, in the embodiment of the present invention, the power offset value corresponding to the TTI length may be a value predetermined by the network device and the terminal, or may be a default value of the network device, or may be configured by the network device through a user, or may be obtained by the user through a large amount of experimental data and configured to the network device and/or the terminal, and the like, which is not limited in the embodiment of the present invention.

In this embodiment, since the transmit power calculation formula includes the power offset value, the power offset value corresponding to the TTI length introduced when calculating the transmit power of the channel can be implemented to compensate for the performance difference caused by the channel estimation difference, ensure the performance stability of transmission, improve the accuracy of channel estimation, and ensure the reliable transmission of data. In addition, due to the power offset value corresponding to the TTI length introduced when the transmission power is determined, the transmission performance difference caused by the DMRS transmission difference of different TTI lengths can be compensated, so that the transmission performance of the communication system is improved.

In this embodiment, the transmit power calculation formula may be a calculation formula obtained by introducing a power offset parameter corresponding to the TTI length into a Power Control (PC) formula, where the power offset parameter indicates the power offset value. In addition, the introduction here may be to add a power offset value corresponding to the TTI length when calculating the transmission power, that is, the transmission power determined in this embodiment may be the power obtained by adding the transmission power calculated by using the PC formula and the power offset value corresponding to the TTI length.

f (i) is a cell specific parameter, and f (i) is an adjustment value for the current power control; delta_PUSCHAnd the power offset value is corresponding to the first TTI length.

In this embodiment, the above formula can be used to realize the correspondence based on the first TTI lengthDetermines the transmit power of the channel. Further, f (i) is f (i-1) + δ_PUSCH(i-K_PUSCH)，δ_PUSCHA correction value specific to the terminal, also called Transmit Power Control (TPC), K_PUSCHParameters are predefined for the system corresponding to the TDD uplink and downlink configuration. In addition, the following part of the above formula can be understood as the PC formula:

in addition, in this embodiment, only the PUSCH channel is described as an example.

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

In this embodiment, the determination of the transmission power of the channel based on the power offset value corresponding to the first TTI length can be implemented by the above formula. In addition, Δ_{F_PUCCH}(F) The cell specific parameters may be signaled by higher layers to correspond to the transmission format of the PUCCH. Delta_TxD(F') may be informed by higher layers that the UE-specific parameters are related to the number of transmit antennas. In addition, the following part of the above formula can be understood as the PC formula:

note that, in this embodiment, only the PUCCH channel is described as an example. For example: for the SRS transmission channel, which may be a PC formula in the channel, refer to the above-mentioned PDSCH and PDCCH channel embodiments, which are not described herein again.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, SRS transmission channel.

In this embodiment, determining the transmission power of the PUSCH, PUCCH, sPUSCH, sPUCCH, SRS transmission channel may be implemented.

Based on the network structure shown in fig. 1, an embodiment of the present invention provides a method for determining transmit power, as shown in fig. 3, including the following steps:

301. the network equipment sends an indication message used for determining a power offset value corresponding to a first TTI length to a terminal, so that the terminal obtains the power offset value corresponding to the first TTI length and determines the transmission power of a channel transmitted by using the first TTI length based on the power offset value.

In this embodiment, the indication message may be a broadcast message or configuration signaling, etc. After the terminal obtains the power offset value corresponding to the first TTI length according to the indication message, the terminal may determine the transmission power of the channel transmitted by using the first TTI length based on the power offset value.

or

The method may further comprise:

302. if the first TTI with the first TTI length and the second TTI with the second TTI length exist in the same subframe, the network device sends an indication message used for determining a power offset value corresponding to the second TTI length to the terminal, so that the terminal determines the transmission power of a channel transmitted by using the second TTI length based on the power offset value corresponding to the second TTI length.

It should be noted that, in this embodiment, the execution order of step 301 and step 302 is not limited, for example: may be performed simultaneously or sequentially.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

It should be noted that, this embodiment is used as an implementation manner of a network device side corresponding to the embodiment shown in fig. 2, and a specific implementation manner of this embodiment may refer to a relevant description of the embodiment shown in fig. 2, so as to avoid repeated description, and this embodiment is not described again. In this embodiment, the transmission performance of the communication system can also be improved.

The embodiments described in the above examples are illustrated below by way of a number of examples:

example 1:

in this example, the power offset value corresponding to the TTI length is configured through configuration signaling:

the method comprises the following steps: assuming that the channel is PUSCH, and distinguishing the TTI lengths in the system into 1ms and 0.5ms, i.e. normal TTI and slot-based sTTI, the system configures the power offset value of different TTI lengths as Δ_{PUSCH_normal_TTI}And delta_{PUSCH_sTTI}And via a broadcast channel or ROne of the RC signalling is broadcast to all terminals of the cell. Assuming that the signaling uses 1bit to indicate the power offset value, the corresponding relationship is shown in table 1. Taking only 1bit as an example here, when there are more power offset values agreed or configurable in the system, more bits are needed, but the indication is similar.

Table 1:

signalling the status	Indicated power offset value
		0	Δ_{PUSCH_normal_TTI}
1	Δ_{PUSCH_sTTI}

The terminal receives the related signaling, obtains a power deviation value of normal TTI and slot-based sTTI, determines a power deviation value corresponding to the TTI length according to the TTI length indicated in the DCI for scheduling the PUSCH, and determines the transmission power of the PUSCH according to the following formula based on the power deviation value:

wherein, Delta_PUSCHFor a power offset value corresponding to the TTI length, Δ for normal TTI_PUSCH＝Δ_{PUSCH_normal_TTI}(ii) a For sTTI, Δ_PUSCH＝Δ_{PUSCH_sTTI}。

The method 2 comprises the following steps: the system configures the deviation of different TTI lengths from the power offset value of the normal TTI, i.e. configures the power offset value of the normal TTI to be Δ_{PUSCH_normal_TTI}Power offset value of sTTIIs composed of

Wherein

Is the deviation of the sTTI power offset value from the normal TTI power offset value. And broadcasts to all terminals of the cell through one of a broadcast channel, System Information Block (SIB) Information, or RRC signaling. Assuming that the signaling uses 1bit to indicate the deviation of the power offset value, the corresponding relationship is shown in table 2. Taking only 2 bits as an example here, when the deviation of the power offset value agreed or configurable in the system is larger, more bits are needed, but the indication is similar.

Table 2:

the terminal receives the related signaling, obtains a power deviation value of a normal TTI and a slot-based sTTI, determines a power deviation value corresponding to the TTI length according to the TTI length indicated in the downlink control channel which uses the uplink DCI format and corresponds to the PUSCH, and determines the PUSCH according to the following formula based on the power deviation value:

wherein, Delta_PUSCHFor a power offset value corresponding to the TTI length, Δ for normal TTI_PUSCH＝Δ_{PUSCH_normal_TTI}(ii) a For sTTI, according to the indication state of the signaling

Or

Example 2:

the example is illustrated by pre-specifying power offset values corresponding to different TTI lengths, assuming the above informationIs known as PUSCH and distinguishes between TTI lengths within the system, 1ms and 0.5ms, i.e. normal TTI and slot-based sTTI. The system pre-stipulates the power offset value corresponding to different TTI lengths as delta_{PUSCH_normal_TTI}And delta_{PUSCH_sTTI}The terminal determines the transmission power of the current resource scheduling according to the TTI length indicated in the uplink resource scheduling DCI:

wherein, Delta_PUSCHFor power offset values, Δ for normal TTI_PUSCH＝Δ_{PUSCH_normal_TTI}(ii) a For the duration of the sTTI,

or the deviation of the power offset value of different TTI lengths relative to the normal TTI is predetermined by the system, namely the power offset value of the normal TTI is determined to be delta_{PUSCH_normal_TTI}The power offset value of sTTI is

Wherein

Is the deviation of the sTTI power offset value from the normal TTI power offset value. The terminal determines the transmission power of the current resource scheduling according to the TTI length indicated in the uplink resource scheduling DCI:

referring to fig. 4, which shows a terminal structure, the terminal 40 includes the following modules:

a first obtaining module 41, configured to obtain a power offset value corresponding to the first TTI length;

a first determining module 42 for determining a transmit power of a channel transmitted using the first TTI length based on the power offset value.

Optionally, the first obtaining module 41 is configured to receive a power offset value corresponding to the first TTI length sent by the network device; or

The first obtaining module 41 is configured to receive a power offset value corresponding to a second TTI length sent by a network device, and a deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length, and obtain the power offset value corresponding to the first TTI length by using the power offset value corresponding to the second TTI length and the deviation.

Optionally, the first obtaining module 41 is configured to obtain a power offset value corresponding to the predetermined first TTI length; or

The first obtaining module 41 is configured to obtain a power offset value corresponding to a second TTI length agreed in advance, and a deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length, and obtain the power offset value corresponding to the first TTI length by using the power offset value corresponding to the second TTI length and the deviation.

Optionally, as shown in fig. 5, the terminal 40 further includes:

a second obtaining module 43, configured to obtain a power offset value corresponding to a second TTI length if a first TTI of the first TTI length and a second TTI of the second TTI length exist in a same subframe;

a second determining module 44, configured to determine the transmission power of the channel transmitted using the second TTI length based on the power offset value corresponding to the second TTI length.

Optionally, the first obtaining module 41 is configured to determine a first TTI length of the channel, and obtain a power offset value corresponding to the first TTI length.

Optionally, the first determining module 42 is configured to determine the transmission power of the channel transmitted by using the first TTI length according to a preset transmission power calculation formula, where the transmission power calculation formula includes the power offset value.

Optionally, the first determining module 42 is configured to determine the transmission power of the channel transmitted using the first TTI length by:

f (i) is a cell specific parameter, and f (i) is an adjustment value for the current power control; delta_PUSCHA power offset corresponding to the first TTI length;

or

The first determining module 42 is configured to determine the transmit power of the channel transmitted using the first TTI length by:

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

It should be noted that the terminal 40 in this embodiment may be the terminal in the embodiment shown in fig. 1 to fig. 3, and any implementation of the terminal in the embodiment shown in fig. 1 to fig. 3 may be implemented by the terminal 40 in this embodiment to achieve the same beneficial effects, which is not described herein again.

Referring to fig. 6, which illustrates a network device architecture, a network device 60 includes the following modules:

a first sending module 61, configured to send an indication message used for determining a power offset value corresponding to a first TTI length to a terminal, so that the terminal determines, based on the power offset value, a transmission power of a channel transmitted using the first TTI length.

Optionally, the network device may further include:

a second sending module 62, configured to send, to the terminal, an indication message for determining a power offset value corresponding to a second TTI length if a first TTI of the first TTI length and a second TTI of the second TTI length exist in the same subframe, so that the terminal determines, based on the power offset value corresponding to the second TTI length, transmission power of a channel transmitted using the second TTI length.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

It should be noted that, in this embodiment, the network device 60 may be the network device in the embodiment shown in fig. 1 to fig. 3, and any implementation of the network device in the embodiment shown in fig. 1 to fig. 3 may be implemented by the network device 60 in this embodiment to achieve the same beneficial effects, which is not described herein again.

Referring to fig. 7, there is shown a structure of a terminal including: a processor 700, a transceiver 710, a memory 720, a user interface 730, and a bus interface, wherein:

the processor 700, which is used to read the program in the memory 720, executes the following processes:

acquiring a power offset value corresponding to the first TTI length;

determining a transmit power of a channel transmitted using the first TTI length based on the power offset value.

Among other things, the transceiver 710 is used for receiving and transmitting data under the control of the processor 700.

In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 730 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

Optionally, the obtaining the power offset value corresponding to the first TTI length includes:

receiving, by the transceiver 710, a power offset value corresponding to the first TTI length sent by a network device; or

The transceiver 710 receives a power offset value corresponding to a second TTI length sent by a network device, and a deviation between the power offset value corresponding to the first TTI length and the power offset value corresponding to the second TTI length, and obtains the power offset value corresponding to the first TTI length by using the power offset value corresponding to the second TTI length and the deviation.

acquiring a power offset value corresponding to the first TTI length agreed in advance; or

And acquiring a power deviation value corresponding to a second preset TTI length and the deviation between the power deviation value corresponding to the first TTI length and the power deviation value corresponding to the second TTI length, and acquiring the power deviation value corresponding to the first TTI length by using the power deviation value corresponding to the second TTI length and the deviation.

Optionally, the processor 700 is further configured to:

if a first TTI with the first TTI length and a second TTI with the second TTI length exist in the same subframe, acquiring a power offset value corresponding to the second TTI length;

and determining the transmission power of the channel transmitted by using the second TTI length based on the power offset value corresponding to the second TTI length.

and determining a first TTI length of the channel, and acquiring a power offset value corresponding to the first TTI length.

Optionally, the determining the transmission power of the channel transmitted using the first TTI length based on the power offset value includes:

and determining the transmission power of the channel transmitted by using the first TTI length according to a preset transmission power calculation formula, wherein the transmission power calculation formula comprises the power offset value.

Optionally, the determining the transmission power of the channel transmitted by using the first TTI length according to a preset transmission power calculation formula includes:

determining a transmit power of a channel transmitted using the first TTI length by:

or

for FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For the case of TDD it is also possible to,

where g (i) is the current channel power control modulation value, K_PUCCHPredefining parameters for the system, corresponding to TDD uplink and downlink configuration, k_mParameters predefined for the system, and transmissionThe frame structure corresponds to, delta_PUCCHFor the terminal-specific correction value, M is Δ corresponding to the TDD frame structure_PUCCHIs the power offset value.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

It should be noted that the terminal in this embodiment may be the terminal in the embodiment shown in fig. 1 to fig. 3, and any implementation of the terminal in the embodiment shown in fig. 1 to fig. 3 may be implemented by the terminal in this embodiment to achieve the same beneficial effects, which is not described herein again.

Referring to fig. 8, there is shown a structure of a network device including: a processor 800, a transceiver 810, a memory 820, a user interface 830, and a bus interface, wherein:

the processor 800, which is used to read the program in the memory 820, executes the following processes:

an indication message sent by the transceiver 810 to the terminal for determining a power offset value corresponding to the first TTI length enables the terminal to obtain the power offset value corresponding to the first TTI length, and determine the transmission power of a channel transmitted using the first TTI length based on the power offset value.

Among other things, a transceiver 810 for receiving and transmitting data under the control of the processor 800.

In fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 830 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

Optionally, the indication message sent to the terminal for determining the power offset value corresponding to the first TTI length includes:

a power offset value corresponding to the first TTI length sent to the terminal; or

And sending a power deviation value corresponding to a second TTI length and the deviation between the power deviation value corresponding to the first TTI length and the power deviation value corresponding to the second TTI length to the terminal, so that the terminal uses the power deviation value corresponding to the second TTI length and the deviation to obtain the power deviation value corresponding to the first TTI length.

Optionally, the processor 800 is further configured to:

if the first TTI and the second TTI have the first TTI and the second TTI, respectively, in the same subframe, the indication message sent by the transceiver 810 to the terminal is used to determine the power offset value corresponding to the second TTI, so that the terminal determines the transmission power of the channel transmitted by using the second TTI based on the power offset value corresponding to the second TTI.

Optionally, the channel includes one or more of the following:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

It should be noted that the network device in this embodiment may be the network device in the embodiment shown in fig. 1 to fig. 3, and any implementation of the network device in the embodiment shown in fig. 1 to fig. 3 may be implemented by the network device in this embodiment to achieve the same beneficial effects, which is not described herein again.

Referring to fig. 9, a transmit power determination system is shown comprising:

the network device 91, configured to send an indication message to the terminal 92 for determining a power offset value corresponding to the first TTI length;

the terminal 92 is configured to obtain a power offset value corresponding to the first TTI length according to the indication message, and determine the transmission power of the channel transmitted according to the first TTI length based on the power offset value.

In this embodiment, the network device 91 and the terminal 92 may be the network device and the terminal introduced in the embodiments shown in fig. 1 to 8, and the embodiments thereof may refer to the embodiments shown in fig. 1 to 8, and the same technical effect can also be achieved, which is not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for determining transmit power, comprising:

the terminal acquires a power deviation value corresponding to the length of a first Transmission Time Interval (TTI);

the terminal determining a transmit power of a channel transmitted using the first TTI length based on the power offset value;

wherein the terminal determines a transmit power of a channel transmitted using the first TTI length based on the power offset value, comprising:

wherein, P_PUSCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, M, of the terminal_PUSCH(i) For the uplink resource block R allocated to the terminalNumber of B, P_{O_PUSCH}(j) From P_{O_NOMINAL_PUSCH}(j) And P_{O_UE_PUSCH}(j) Sum composition, P_{O_NOMINAL_PUSCH}(j) Normalizing the initial power value, P, for cell-specific_{O_UE_PUSCH}(j) The initial value of the power of the exclusive part of the terminal is j is a parameter corresponding to a system scheduling mode, α is a cell-specific path loss compensation coefficient, and PL is the downlink path loss estimated by the terminal;

or

wherein, P_PUCCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, P, of the terminal_{0_PUCCH}From P_{0_NOMINAL_PUCHH}And P_{0_UE_PUCCH}Sum composition, P_{0_NOMINAL_PUCHH}Normalizing the initial power value, P, for cell-specific_{0_UE_PUCCH}For the initial value of the terminal-specific part power, PL is the estimated downlink path loss of the terminal, h (n)_CQI,n_HARQ,n_SR) For the independent parameters corresponding to the number of channel quality indicator CQI information bits, the number of hybrid automatic repeat request HARQ information bits and the scheduling request SR configuration in the transmission frame format,Δ_{F_PUCCH}(F) for cell-specific parameters, Δ_TxD(F') is the terminal specific parameter;

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

2. The method of claim 1, wherein the first TTI length is equal to 1ms or the first TTI length is less than 1 ms.

3. The method of claim 1, wherein the power offset value for the first TTI length is a power offset value for the first TTI length that is separately configured for the terminal in a cell; or

4. The method of any of claims 1-3, wherein the obtaining, by the terminal, the power offset value for the first TTI length comprises:

5. The method of any of claims 1-3, wherein the obtaining, by the terminal, the power offset value for the first TTI length comprises:

6. The method of any one of claims 1-3, further comprising:

7. The method of any of claims 1-3, wherein the obtaining, by the terminal, the power offset value for the first TTI length comprises:

8. The method of any one of claims 1-3, wherein the channel comprises one or more of:

the method comprises the steps of physical uplink shared channel PUSCH, physical uplink control channel PUCCH, short physical uplink shared channel sUSCH, short physical uplink control channel sUCCH and channel sounding reference signal SRS transmission channel.

9. A method for determining transmit power, comprising:

the network equipment sends an indication message used for determining a power offset value corresponding to a first TTI length to a terminal, so that the terminal obtains the power offset value corresponding to the first TTI length and determines the transmission power of a channel transmitted by using the first TTI length based on the power offset value;

wherein the determining a transmit power of a channel transmitted using the first TTI length based on the power offset value comprises:

or

wherein, P_PUCCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, P, of the terminal_{0_PUCCH}From P_{0_NOMINAL_PUCHH}And P_{0_UE_PUCCH}Sum composition, P_{0_NOMINAL_PUCHH}Normalizing the initial power value, P, for cell-specific_{0_UE_PUCCH}For the initial value of the terminal-specific part power, PL is the estimated downlink path loss of the terminal, h (n)_CQI,n_HARQ,n_SR) Configuring independent parameters, delta, corresponding to the number of channel quality indicator CQI information bits, the number of hybrid automatic repeat request HARQ information bits and the scheduling request SR in the transmission frame format_{F_PUCCH}(F) For cell-specific parameters, Δ_TxD(F') is the terminal specific parameter;

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

10. The method of claim 9, wherein the first TTI length is equal to 1ms or the first TTI length is less than 1 ms.

11. The method of claim 9, wherein the power offset value for the first TTI length is a power offset value for the first TTI length that is separately configured for the terminal in a cell; or

12. The method of any of claims 9-11, wherein the indication message sent by the network device to the terminal for determining the power offset value for the first TTI length comprises:

13. The method of any of claims 9-11, wherein if a first TTI of the first TTI length and a second TTI of the second TTI length are present in the same subframe, the indication message is further used to determine a power offset value corresponding to the second TTI length, such that the terminal determines the transmit power of a channel transmitted using the second TTI length based on the power offset value corresponding to the second TTI length;

or

The method further comprises the following steps:

14. The method of any one of claims 9-11, wherein the channel comprises one or more of:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

15. A terminal, comprising:

a first determining module to determine a transmit power of a channel transmitted using the first TTI length based on the power offset value;

wherein the first determining module is configured to determine a transmit power of a channel transmitted using the first TTI length by:

or

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

where g (i) is the current channel power control modulation value, K_PUCCHPredefining parameters for the system, as opposed to TDD uplink and downlink configurationsShould, k_mParameters predefined for the system, corresponding to the transmission frame structure, δ_PUCCHFor the terminal-specific correction value, M is Δ corresponding to the TDD frame structure_PUCCHIs the power offset value.

16. The terminal of claim 15, wherein the first TTI length is equal to 1ms or the first TTI length is less than 1 ms.

17. The terminal of claim 15, wherein the power offset value for the first TTI length is a power offset value for the first TTI length that is separately configured for the terminal in a cell; or

18. The terminal of any one of claims 15-17, wherein the first obtaining module is configured to receive a power offset value corresponding to the first TTI length sent by a network device; or

19. The terminal of any one of claims 15 to 17, wherein the first obtaining module is configured to obtain a power offset value corresponding to the first TTI length agreed in advance; or

20. The terminal according to any of claims 15-17, characterized in that the terminal further comprises:

21. The terminal of any one of claims 15-17, wherein the first obtaining module is configured to determine a first TTI length of the channel, and obtain a power offset value corresponding to the first TTI length.

22. The terminal of any of claims 15-17, wherein the channel comprises one or more of:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

23. A network device, comprising:

a first sending module, configured to send an indication message to a terminal, where the indication message is used to determine a power offset value corresponding to a first TTI length, so that the terminal determines, based on the power offset value, a transmission power of a channel transmitted using the first TTI length;

or

wherein, P_PUCCH(i) For the transmission power of the channel, i denotes the ith subframe, P_MAXIs the maximum transmission power, P, of the terminal_{0_PUCCH}From P_{0_NOMINAL_PUCHH}And P_{0_UE_PUCCH}Sum composition, P_{0_NOMINAL_PUCHH}Normalizing the initial power value, P, for cell-specific_{0_UE_PUCCH}Power initialization for the terminal-specific partThe value, PL, is the estimated downlink path loss of the terminal, h (n)_CQI,n_HARQ,n_SR) Configuring independent parameters, delta, corresponding to the number of channel quality indicator CQI information bits, the number of hybrid automatic repeat request HARQ information bits and the scheduling request SR in the transmission frame format_{F_PUCCH}(F) For cell-specific parameters, Δ_TxD(F') is the terminal specific parameter;

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,

24. The network device of claim 23, wherein the first TTI length is equal to 1ms or the first TTI length is less than 1 ms.

25. The network device of claim 23, wherein the power offset value for the first TTI length is a power offset value for the first TTI length that is separately configured for the terminal in a cell; or

26. The network device of any one of claims 23-25, wherein the first transmitting module is configured to transmit a power offset value corresponding to the first TTI length to the terminal; or

27. The network device of any one of claims 23-25, wherein if a first TTI of the first TTI length and a second TTI of a second TTI length exist in the same subframe, the indication message is further configured to determine a power offset value corresponding to the second TTI length, such that the terminal determines a transmit power of a channel transmitted using the second TTI length based on the power offset value corresponding to the second TTI length;

or

The network device further includes:

28. The network device of any one of claims 23-25, wherein the channel comprises one or more of:

PUSCH, PUCCH, sUSCH, sUCCH, and SRS transport channels.

29. A transmit power determination system, comprising:

the terminal is used for acquiring a power deviation value corresponding to the first TTI length according to the indication message and determining the transmission power of a channel transmitted by using the first TTI length based on the power deviation value;

or

for frequency division duplex FDD, g (i) ═ g (i-1) + δ_PUCCH(i-K_PUCCH)；

For time division duplex TDD,