WO2018228465A1 - Determination method for sending power, processing chip and communication device - Google Patents

Abstract

Provided is a determination method for sending power. The method comprises: a first device determining a relative power ratio of a phase tracking reference signal (PTRS) to a data channel or a relative power ratio of the PTRS to a demodulation reference signal (DMRS), wherein the relative power ratio of the PTRS to the data channel is determined by means of a first function and a first variable, the relative power ratio of the PTRS to the DMRS is determined by means of a second function, the first variable and a second variable, the first variable comprises the number of transport layers or the number of DMRS ports, and the second variable comprises the frequency domain density of the DMRS; based on the relative power ratio of the PTRS to the data channel, and sending power of the data channel or the relative power ratio of the PTRS to the DMRS, and sending power of the DMRS, determining sending power of the PTRS; and using the sending power of the PTRS to send the PTRS to a second device.

Description

Method for determining transmission power, processing chip and communication device Technical field

The present invention relates to the field of communications technologies, and in particular, to a method for determining transmit power, a processing chip, and a communication device.

Background technique

In the 5G communication system, a higher carrier frequency (referred to as high frequency) relative to Long Term Evolution (LTE) will be adopted. According to the current standard, the frequency is generally higher than 6 GHz, and the currently focused frequency band is 28 GHz. 38GHz, 72GHz, etc., to achieve wireless communication with greater bandwidth and higher transmission rate. However, compared with traditional low-frequency communication, the radio frequency distortion of high-frequency systems will be more serious, especially the influence of phase noise. In addition, the effects of Doppler and Carrier Frequency Offset (CFO) will increase as the frequency becomes higher.

Taking Massive input massive output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) as an example, considering the phase noise and carrier frequency offset of the receiving end and the transmitting end, the receiving end fast Fu The receive expression on the kth subcarrier of the nth receive antenna after the Fourier Transform (FFT) is:

among them,

which is:

among them,

a channel representing the mth transmit antenna to the nth receive antenna on the kth subcarrier,

Indicates the transmission data of the mth antenna on the kth subcarrier,

Represents noise on the kth subcarrier on the nth receive antenna.

Indicates the phase noise at the receiving end and the phase deviation caused by the CFO on the kth subcarrier on the nth receiving antenna.

Indicates the phase noise of the transmitter and the phase offset caused by the CFO to the kth subcarrier on the mth receiving antenna. It can be seen from the expression that the influence of phase noise on OFDM performance is mainly reflected in Common Phase Error (CPE) and Inter-carrier Interference (ICI); the influence of CFO on OFDM performance is mainly Reflecting ICI. Among them, ICI has less impact on performance than CPE in actual system. Therefore, CPE is usually compensated in the phase noise compensation scheme.

1A is a constellation point where a 64QAM modulated signal is not affected by phase noise; FIG. 1B is a constellation point of a 2G band 64QAM modulated signal affected by phase noise; and FIG. 1C is a constellation point of a 28GAM modulated signal affected by phase noise in a 28G band. As shown in FIG. 1A to FIG. 1C, taking phase noise as an example, as the frequency band increases, the phase noise level deteriorates at a level of 20*log ^(f1/f2) . Taking the 2G band and the 28G band as an example, the phase noise level of the 28G band is 23 dB higher than that of the 2G band. The higher the phase noise level, the greater the influence of the Common Phase Error (CPE), and the greater the phase error caused by the CPE.

Different subcarriers of the same OFDM symbol are affected by the same CPE, and the phase error on different subcarriers is different due to the influence of Gaussian white noise. In the frequency domain, a certain number of Phase Compensation Reference Signals (PCRS) (also referred to as Phase Tracking Reference Signals (PTRS)) are required. Currently, there is no uniform naming in the industry. The present invention is convenient for subsequent PTRS) to estimate the CPE and average it to minimize the effects of Gaussian white noise.

At present, how to determine the transmit power of PTRS is a technical problem to be solved.

Summary of the invention

The embodiment of the present application provides a method for determining a transmit power, which can flexibly adapt to different DMRS port numbers, PTRS port numbers, and port multiplexing mode configurations to ensure efficient use of energy and improve accuracy of PTRS measurements.

In a first aspect, the embodiment of the present application provides a method for determining transmit power, including: determining, by a first device, a relative power ratio of a phase tracking reference signal PTRS and a data channel, or a relative power ratio of a PTRS and a demodulation reference signal DMRS, Wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable, and the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, wherein the first variable includes the number of transmission layers or the DMRS The number of ports, the second variable includes the frequency domain density of the DMRS; the first device determines the transmit power of the PTRS based on the relative power ratio of the PTRS and the data channel and the transmit power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmit power of the DMRS; The first device transmits the PTRS to the second device using the transmit power of the PTRS.

According to the first aspect, in a possible implementation manner, the first device includes a terminal device, the second device includes a base station device, and the data channel includes a physical uplink shared channel PUSCH.

According to the first aspect, in a possible implementation manner, the first device includes a base station device, the second device includes a terminal device, and the data channel includes a physical downlink shared channel PDSCH.

According to the first aspect and all possible implementations thereof, in a possible implementation, the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable, including:

Relative power ratio of PTRS and data channel = 10log ₁₀ (X)

Where X includes the first variable.

According to the first aspect and all possible implementations thereof, in a possible implementation, the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, including:

Relative power ratio of PTRS and DMRS = 10log ₁₀ (XY)

Where X includes the first variable and Y includes the second variable.

In a second aspect, the embodiment of the present application provides a method for determining a transmit power, including: determining, by a lookup table, a relative power ratio of a phase tracking reference signal PTRS and a data channel, or a relative of a PTRS and a demodulation reference signal DMRS; Power ratio; the first device determines the transmit power of the PTRS based on the relative power ratio of the PTRS and the data channel and the transmit power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmit power of the DMRS; the first device uses the transmit power of the PTRS The second device sends a PTRS.

According to the second aspect, in a possible implementation manner, the first device includes a terminal device, the second device includes a base station device, and the data channel includes a physical uplink shared channel PUSCH.

According to the second aspect, in a possible implementation manner, the first device includes a base station device, the second device includes a terminal device, and the data channel includes a physical downlink shared channel PDSCH.

According to the second aspect and all possible implementation manners, in a possible implementation manner, the first device determines, by using a lookup table, a relative power ratio of the PTRS and the data channel, including:

The first device determines the relative power ratio of the PTRS and the data channel by looking up the following table:

Transport layer layer	Relative power ratio (dB) of PTRS and PUSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

or

DMRS port number	Relative power ratio (dB) of PTRS and PUSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78

7	8.45
8	9

According to the second aspect and all possible implementation manners, in a possible implementation manner, the first device determines, by using a lookup table, a relative power ratio of the PTRS and the data channel, including:

The first device determines the relative power ratio of the PTRS and the data channel by looking up the following table:

Transport layer layer	Relative power ratio (dB) of PTRS and PDSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

or

DMRS port number	Relative power ratio (dB) of PTRS and PDSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

According to the second aspect and all possible implementation manners, in a possible implementation manner, the first device determines, by using a lookup table, a relative power ratio of the PTRS and the DMRS, including:

The first device determines the relative power ratio of PTRS and DMRS by looking up the following table:

Transport layer layer	Frequency domain density of DMRS	Relative power ratio (dB) of PTRS and DMRS
1	1/4	(-)6
2	1/4	(-)3
3	1/4	(-) 1.23
4	1/4	0
5	1/4	0
6	1/4	0
7	1/4	0
8	1/4	3

or

DMRS port number	Frequency domain density of DMRS	Relative power ratio (dB) of PTRS and DMRS
1	1/4	(-)6

2	1/4	(-)3
3	1/4	(-) 1.23
4	1/4	0
5	1/4	0
6	1/4	0
7	1/4	0
8	1/4	3

In a third aspect, an embodiment of the present application provides a processing chip, configured to: determine a relative power ratio of a phase tracking reference signal PTRS and a data channel, or a relative power ratio of a PTRS and a demodulation reference signal DMRS, where the PTRS and the data channel The relative power ratio is determined by the first function and the first variable, and the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, wherein the first variable includes the number of transmission layers or the number of DMRS ports, and the second The variable includes the frequency domain density of the DMRS; the transmission power of the PTRS is determined based on the relative power ratio of the PTRS and the data channel and the transmission power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmission power of the DMRS.

According to the third aspect, in a possible implementation manner, the data channel includes a physical uplink shared channel PUSCH or a physical downlink shared channel PDSCH.

According to the third aspect and all possible implementations thereof, in a possible implementation, the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable, including:

Relative power ratio of PTRS and data channel = 10log ₁₀ (X)

Where X includes the first variable.

According to the third aspect and all possible implementations thereof, in a possible implementation, the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, including:

Relative power ratio of PTRS and DMRS = 10log ₁₀ (XY)

Where X includes the first variable and Y includes the second variable.

In a fourth aspect, the embodiment of the present application provides a processing chip, configured to: determine, by using a lookup table, a relative power ratio of a phase tracking reference signal PTRS and a data channel, or a relative power ratio of a PTRS and a demodulation reference signal DMRS; The transmission power of the PTRS is determined by the relative power ratio of the data channel and the transmission power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmission power of the DMRS.

According to the fourth aspect, in a possible implementation manner, the data channel includes a physical uplink shared channel PUSCH.

According to the fourth aspect and all possible implementation manners, in a possible implementation manner, the data channel includes a physical downlink shared channel PDSCH.

According to the fourth aspect and all possible implementation manners, in a possible implementation manner, determining, by looking up the table, a relative power ratio of the PTRS and the data channel includes:

Determine the relative power ratio of the PTRS and data channel by looking up the following table:

Transport layer layer	Relative power ratio (dB) of PTRS and PUSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

or

DMRS port number	Relative power ratio (dB) of PTRS and PUSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

According to the fourth aspect and all possible implementation manners, in a possible implementation manner, determining, by looking up the table, a relative power ratio of the PTRS and the data channel includes:

Determine the relative power ratio of the PTRS and data channel by looking up the following table:

Transport layer layer	Relative power ratio (dB) of PTRS and PDSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

or

DMRS port number	Relative power ratio (dB) of PTRS and PDSCH
1	0
2	3
3	4.77
4	6
5	7
6	7.78
7	8.45
8	9

According to the fourth aspect and all possible implementation manners, in a possible implementation manner, determining a relative power ratio of the PTRS and the DMRS by using a lookup table includes:

Determine the relative power ratio of PTRS and DMRS by looking up the following table:

Transport layer layer	Frequency domain density of DMRS	Relative power ratio (dB) of PTRS and DMRS
1	1/4	(-)6
2	1/4	(-)3
3	1/4	(-) 1.23
4	1/4	0
5	1/4	0
6	1/4	0
7	1/4	0
8	1/4	3

or

DMRS port number	Frequency domain density of DMRS	Relative power ratio (dB) of PTRS and DMRS
1	1/4	(-)6
2	1/4	(-)3
3	1/4	(-) 1.23
4	1/4	0
5	1/4	0
6	1/4	0
7	1/4	0
8	1/4	3

In a fifth aspect, the present application provides a communication device, including a processor and a transmitter, for performing the method provided by the first aspect and all possible implementations thereof.

In a sixth aspect, the present application provides a communication device, including a processor and a transmitter, for performing the method provided by the second aspect and all possible implementations thereof.

In a seventh aspect, the present application provides a method for determining transmit power, including: a first device mapping data onto multiple transport layers, where multiple transport layers include a first transport layer, and a first transport layer corresponds to the first The RE set and the second RE set, the first RE set and the second RE set both comprise a plurality of REs, and each of the first RE sets is mapped with a phase tracking reference signal PTRS, each of the second RE sets None of the REs can be used to map data; the first device uses the power of all REs in the second RE set to enhance the transmit power of the PTRS mapped on all REs in the first RE set; the first device uses the enhanced transmit power to transmit the PTRS .

In an eighth aspect, the embodiment of the present application provides a communications device, including: a processor, configured to map data to multiple transport layers, where multiple transport layers include a first transport layer, and the first transport layer corresponds to the first a RE set and a second RE set, the first RE set and the second RE set both comprise a plurality of REs, and each of the first RE sets is mapped with a phase tracking reference signal PTRS, each of the second RE sets None of the REs can be used to map data; the power of all REs in the second RE set is used to enhance the transmit power of the PTRS mapped on all REs in the first RE set; and the transmitter is configured to use the enhanced transmit power to transmit the PTRS .

In the embodiment of the present application, the transmitting device first determines the relative power ratio of the PTRS and the data channel or the DMRS by looking up the table or calculating, and then determining the sending power of the PTRS according to the data channel or the transmitting power of the DMRS, and then transmitting the PTRS by using the sending power. It can flexibly adapt to different DMRS port numbers, PTRS port numbers, and port multiplexing mode configuration to ensure efficient use of energy.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1A is a constellation point where a 64QAM modulated signal is not affected by phase noise;

1B is a constellation point of a 2G band 64QAM modulated signal affected by phase noise;

Figure 1C shows the constellation points of the 64GAM modulated signal in the 28G band affected by phase noise;

FIG. 2 is a schematic structural diagram of an application scenario according to an embodiment of the present disclosure;

3 is a resource grid diagram of an LTE system;

4A is a schematic diagram of a pilot pattern (uplink transmission, one transport layer, one DMRS port, one PTRS port) according to an embodiment of the present application;

FIG. 4B is a schematic diagram of a pilot pattern according to an embodiment of the present disclosure (uplink transmission, two transmission layers, two DMRS ports, one PTRS port, and two DMRS ports are one group);

FIG. 4C is a schematic diagram of a pilot pattern according to an embodiment of the present disclosure (uplink transmission, two transport layers, two DMRS ports, two PTRS ports, and two DMRS ports are two groups);

FIG. 5 is a schematic flowchart of a method for determining transmission power according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of hardware of a communication device according to an embodiment of the present disclosure.

detailed description

The present application will be further described in detail below with reference to the accompanying drawings.

The embodiments of the present application can be applied to various mobile communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband). Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, general purpose Other mobile communication systems such as the Universal Mobile Telecommunication System (UMTS), the evolved Long Term Evolution (eLTE) system, and the 5G system (for example, New Radio (NR) system).

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) A terminal, also called a User Equipment (UE), is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like. Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.

2) Network equipment, which may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device may be a network device in a future 5G network, such as a gNB in an NR system. Or a small station, a micro station, a TRP (transmission reception point), or any other wireless device such as a relay station, an access point, or a network device in a future evolved Public Land Mobile Network (PLMN). The device is accessed, but the embodiment of the present application is not limited thereto.

3) "Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. The character "/" generally indicates that the contextual object is an "or" relationship. In the meantime, it should be understood that although the terms first, second, third, etc. may be used to describe various messages, requests, and terminals in the embodiments of the present application, these messages, requests, and terminals should not be limited to these terms. These terms are only used to distinguish messages, requests, and terminals from one another.

FIG. 2 is a schematic structural diagram of an application scenario provided by an embodiment of the present application. In the networking architecture shown in FIG. 2, the base station 101 and the terminal 102 are mainly included. The base station 101 can communicate with the terminal 102 using a low frequency (mainly below 6 GHz) or a relatively high frequency (6 GHz or higher) millimeter wave band. For example, the millimeter wave band may be 28 GHz, 38 GHz, or an enhanced-band band of a data plane covering a smaller area, such as a band above 70 GHz. The terminal 102 covered by the base station 101 can communicate with the base station 101 using a low frequency or high frequency millimeter wave band. FIG. 2 is only a simplified schematic diagram of an example, and other devices may be included in the network, which are not shown in FIG. 2.

The communication method and device provided by the embodiments of the present application may be applied to a terminal, where the terminal includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as a browser, an address book, word processing software, and instant messaging software.

Furthermore, various aspects or features of the present application can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (Digital Versatile Disc, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, a variety of media capable of storing, containing, and/or carrying instructions and/or data.

In order to better understand the present application, the present application will be described below in conjunction with the accompanying drawings.

Embodiment 1:

3 is a resource grid diagram of an LTE system. As shown in the figure, the transmission of the channel in the LTE system is in units of radio frames, and one radio frame includes 10 subframes, each of which has a length of 1 millisecond (ms), and each subframe includes Two slots, each slot is 0.5ms. The number of symbols included in each slot is related to the length of the CP (cyclic prefix) in the subframe. If the CP is a normal (normal) CP, each slot includes 7 symbols, and each subframe consists of 14 symbols. If the CP is an extended (long) CP, each slot includes 6 symbols, and each subframe consists of 12 symbols. Symbol composition. The downlink symbols are called orthogonal frequency division multiplexing (OFDM) symbols. In the LTE system, a resource element (RE) is the smallest unit in the time-frequency domain, and is uniquely identified by an index pair (k, l), where k is a subcarrier index and l is a symbol index.

Compared with existing wireless communication networks, next-generation wireless communication networks operating in the range above 6 GHz will suffer from more severe medium-frequency distortion, especially phase noise. The higher the phase noise level, the greater the impact of CPE. Therefore, PTRS is introduced for phase noise estimation.

However, the PTRS occupies some REs, and the occupied REs are originally used to transmit data channels (in the case of uplink transmission, the data channel includes a physical uplink shared channel (PUSCH), and in the downlink transmission, the data channel includes a physical downlink. Physical downlink shared channel (PDSCH) or other reference signal. The most common case is that the occupied RE is originally used to transmit a data channel. For this case, the total power of the PTRS should be equal to the total power of the data channel to be sent on the occupied RE (in the embodiment of the present application) The "power" is equivalent to the "transmit power"). Because the total power available at the transmitting end is pre-configured, if the transmission power of the PTRS is greater than the transmission power of the data channel originally to be transmitted on the occupied RE, the total power available may be exceeded, and if the PTRS is If the transmission power is smaller than the transmission power of the data channel to be sent on the occupied RE, the power is wasted. Of course, if the transmission power of the PTRS is only slightly smaller than the difference (the difference does not exceed the preset threshold), the RE is occupied. The transmission power of the data channel to be transmitted is also feasible.

The above line transmission is taken as an example. The transmission power of the PTRS is equal to the transmission power of the data channel originally to be transmitted on the occupied RE, and the formula (1) can be obtained:

N _layers ×N _RE/layers ×P _PUSCH =N _{PTRS ports} ×N _{RE/PTRS ports} ×P _PTRS (1)

N _layers are the number of transmission layers, and N _RE/layers is the number of REs that cannot be used due to PTRS on each transport layer (in units of 1 resource block (RB), 1 ODFM symbol), and P _{PUSCH is} the transmission. The power of the PUSCH on the layer (in units of 1 RE), the number of _{PTRS ports in the} N _{PTRS ports} , and the number of _REs occupied by each PTRS port in the N _{RE/PTRS ports} (in units of 1 RB, 1 ODFM symbols, The assumption is 1), P _PTRS is the power of PTRS (in units of 1 RE).

Equation (2) can be further derived from equation (1):

Also due to: N _{RE / layerss} = N _{PTRS ports} × N _{RE / PTRS ports}

Formula (3) can be further derived:

Equation (4) can be further derived from equation (3):

Relative power ratio of PTRS and PUSCH = 10log ₁₀ (N _layers ) (4)

And because: the number of transmission layers is equal to the number of DMRS ports, so we can also get the formula (5):

Relative power ratio of PTRS and PUSCH = 10log ₁₀ (N _{DMRS ports} ) (5)

The terminal device may calculate the relative power ratio of the PTRS and the PUSCH by using Equation (4) or (5), and then combine the power of the PUSCH to finally obtain the power of the PTRS, and use the power of the PTRS to transmit the PTRS.

The formula (4) or (5) can be used to calculate the relative power of PTRS and PUSCH when the number of transmission layers is 1-8, the number of DMRS ports is 1-8, and the number of PTRS ports is equal to or less than the number of DMRS ports. Ratio, as shown in Table (1):

Table 1)

Transport layer layer	DMRS port number	Relative power ratio (dB) of PTRS and PUSCH
1	1	0
2	2	3

3	3	4.77
4	4	6
5	5	7
6	6	7.78
7	7	8.45
8	8	9

When the number of transmission layers is 1-12, the number of DMRS ports is 1-12, and the number of PTRS ports is equal to or smaller than the number of DMRS ports, Table (1) can be further extended, as shown in Table (2):

Table 2)

Transport layer layer	DMRS port number	Relative power ratio (dB) of PTRS and PUSCH
1	1	0
2	2	3
3	3	4.77
4	4	6
5	5	7
6	6	7.78
7	7	8.45
8	8	9
9	9	9.54
10	10	10
11	11	10.41
12	12	10.79

For the sake of industrial practice, the values of the relative power ratios of PTRS and PUSCH in Tables (1) and (2) can be removed by decimals, and integers are used, for example, when the number of transmission layers is 3 and the number of DMRS ports is 3. The value of the relative power ratio of PTRS and PUSCH can be an integer of 4.77, and the value obtained is 4. It is also possible to reserve only one decimal place for the relative power ratios of PTRS and PUSCH in Table (1) and Table (2), for example, when the number of transmission layers is 3 and the number of DMRS ports is 3, the relative power ratio of PTRS and PUSCH The value can hold one decimal for 4.77 and the value is 4.7. Whether to take an integer or to keep a decimal number rounded off, the embodiment of the present application is not limited.

The terminal device can also obtain the relative power ratio of the PTRS and the PUSCH by looking up a table (for example, Table (1) or Table (2)), and then combining the power of the PUSCH to finally obtain the power of the PTRS, and using the power of the PTRS. Send PTRS.

On the other hand, the above line transmission is taken as an example. The transmission power of the DMRS is equal to the transmission power of the data channel originally to be transmitted on the occupied RE, and formula (6) can be obtained:

N _layers ×N' _RE/layers ×P _PUSCH =N _{DMRS ports} ×N _{RE/DMRS ports} ×P _DMRS (6)

N _layers are the number of transmission layers, N _{DMRS ports} are the number of DMRS ports, and N' _RE/layers is the number of REs per transmission layer (in units of 1 RB 1 OFDM symbols, usually 12 REs), N _{RE/DMRS ports} The number of REs occupied by each DMRS port (in units of 1 RB, 1 OFDM symbol), P _DMRS is the power spectrum density (PSD) of the DMRS (in units of 1 RE), and P _{PUSCH is the PUSCH on} the transport layer. Power (in 1 RE unit).

Equation (7) can be further derived from equation (6):

And because: the number of transport layers is equal to the number of DMRS ports, so we can get the formula (8):

And because: D _DMRS is the frequency domain density of DMRS, equal to

Can draw the formula (9):

According to formula (9), formula (10) can be further obtained:

According to formula (3) and formula (9), formula (11) can be further obtained:

Equation (12) can be further obtained according to formula (11):

According to formula (12), formula (13) can be further obtained:

Relative power ratio of PTRS and DMRS = 10log ₁₀ (N _layers D _DMRS ) (13)

And because: the number of transmission layers is equal to the number of DMRS ports, so we can also get the formula (14):

Relative power ratio of PTRS and DMRS = 10log ₁₀ (N _{DMRS ports} D _DMRS ) (14)

The terminal device can calculate the relative power ratio of the PTRS and the DMRS through the formula (13) or (14), and combine the power of the DMRS to finally obtain the power of the PTRS, and use the power of the PTRS to transmit the PTRS.

The formula (13) or (14) can be used to calculate the relative power of PTRS and DMRS when the number of transmission layers is 1-8, the number of DMRS ports is 1-8, and the number of PTRS ports is equal to or less than the number of DMRS ports. Ratio, as shown in Table (3):

table 3)

Transport layer layer	DMRS port number	Frequency domain density of DMRS	Relative power ratio (dB) of PTRS and DMRS
1	1	1/4	(-)6
2	2	1/4	(-)3
3	3	1/4	(-) 1.23
4	4	1/4	0
5	5	1/4	0
6	6	1/4	0
7	7	1/4	0

8

8

1/4

3

When the number of transmission layers is 1-12, the number of DMRS ports is 1-12, and the number of PTRS ports is equal to or smaller than the number of DMRS ports, Table (3) can be further extended, as shown in Table (4):

Table 4)

Transport layer layer	DMRS port number	Frequency domain density of DMRS	Relative power ratio (dB) of PTRS and DMRS
1	1	1/4	(-)6
2	2	1/4	(-)3
3	3	1/4	(-) 1.23
4	4	1/4	0
5	5	1/4	0
6	6	1/4	0
7	7	1/4	0
8	8	1/4	3
9	9	1/6	1.76
10	10	1/6	2.22
11	11	1/6	2.63
12	12	1/6	3.01

The frequency domain density of the DMRS can also be other values, such as 1/2, 1/3, etc., assuming that the frequency domain density of the DMRS can be 1/2, 1/3 for each transmission layer or each DMRS port number. , 1/4 and 1/6, then we can get the table (5) as follows:

table 5)

Table (5) provides a relative power ratio of the PTRS and the DMRS including a plurality of configuration possibilities, which can be arbitrarily split and used in the embodiment of the present application.

In Tables (3)-(5), since the number of transport layers is equal to the number of DMRS ports, the first two columns can retain only one of the columns. In addition, for the convenience of industrial practice, the value of the relative power ratio of PTRS and DMRS in Tables (3)-(5) can be removed by a decimal number, for example, when the number of transmission layers is 9, and the number of DMRS ports is 9. The value of the relative power ratio of PTRS and DMRS can be an integer of 1.76, and the value obtained is 1. It is also possible to reserve only one decimal place for the values of the relative power ratios of PTRS and DMRS in Tables (3)-(5), for example, when the number of transmission layers is 9, and the number of DMRS ports is 9, the relative power ratio of PTRS and PUSCH. The value can hold a fraction of 1.76 and get a value of 1.7. Whether to take an integer or to keep a decimal number rounded off, the embodiment of the present application is not limited.

The terminal device can obtain the relative power ratio of the PTRS and the DMRS by looking up a table (for example, Table (3), Table (4) or Table (5)), and combining the power of the DMRS to finally obtain the power of the PTRS, and use The power of the PTRS is used to transmit the PTRS.

In the process of formula derivation, the N _{RE/PTRS ports} , that is, the number of REs occupied by each PTRS port (in units of 1 RB, 1 ODFM symbols) is assumed to be 1, but in implementation, 1 RB, 1 ODFM Within the symbol, the number of REs occupied by each PTRS port may also be greater than 1, that is, N _{RE / PTRS ports} > 1, in this case, formula (4), formula (5), formula (13), formula (14) In the middle, you need to add the frequency domain density of PTRS as another variable, as shown in formula (15):

Relative power ratio of PTRS and PUSCH = 10log ₁₀ (N _layers D _PTRS )

Relative power ratio of PTRS and PUSCH = 10log ₁₀ (N _{DMRS ports} D _PTRS )

Relative power ratio of PTRS and DMRS = 10log ₁₀ (N _layers D _DMRS D _PTRS )

Relative power ratio of PTRS and DMRS = 10log ₁₀ (N _{DMRS ports} D _DMRS D _PTRS ) (15)

Where D _PTRS is the frequency domain density of PTRS.

Correspondingly, the relative power ratio values in tables (1)-(5) will vary according to the frequency domain density of different PTRS, but can be calculated by equation (15).

In the embodiment of the present application, the terminal device calculates by using the formula (4) or (5), or obtains the relative power ratio of the PTRS and the PUSCH by using the table (1) or the table (2), and can combine the power of the PUSCH. And another parameter OFFSET _PTRS-PUSCH , which finally derives the power of the PTRS and uses the power of the PTRS to transmit the PTRS. Wherein, OFFSET _PTRS-PUSCH indicates a reference offset between PTRS power and PUSCH power, which can be configured by the base station. Similarly, the terminal device calculates by formula (13) or (14), or obtains the relative power ratio of PTRS and DMRS through table (3), table (4) or table (5), and can combine PUSCH. The power, as well as another parameter, OFFSET _PTRS-DMRS , ultimately yields the power of the PTRS and uses the power of the PTRS to transmit the PTRS. The OFFSET _PTRS-DMRS indicates a reference offset between the PTRS power and the DMRS power, which can be configured by the base station, and can be obtained by accumulating the OFFSET _PTRS-PUSCH and the reference offset OFFSET _DMRS-PUSCH between the DMRS power and the PUSCH power. .

In the embodiment of the present application, the relative power ratio of the PTRS and the PUSCH, and the relative power ratio of the PTRS and the DMRS may also be preset or configured by the base station, and the terminal device directly acquires the relative power ratio of the PTRS and the PUSCH, and the relative power ratio of the PTRS and the DMRS. Thereafter, the power of the PTRS is derived according to the method described in the embodiment of the present application.

In the embodiment of the present application, the base station may also configure the maximum power P _MAX of the PTRS. When the power of the PTRS calculated by the terminal device calculated by any formula in the embodiment of the present application is greater than P _MAX , the terminal device uses the P _{MAX to} send the PTRS.

Next, the embodiment of the present application will verify the formula (4), the formula (5), the formula (13), the formula (14), and the tables (1) to (5) by way of example. In the following examples, the DMRS ports are grouped according to the crystal oscillator, and the DMRS ports of the same local oscillator are divided into one group, and the phase noise experienced by all the ports in the group can be measured by the PTRS on one port.

FIG. 4A is a schematic diagram of a pilot pattern (uplink transmission, one transport layer, one DMRS port, one PTRS port) according to an embodiment of the present application. As can be seen from FIG. 4A, in the time-frequency resource mapping mode of the PTRS, the powers of the PTRS and the PUSCH are consistent, and the relative power ratio of the PTRS and the PUSCH is 0 dB.

FIG. 4B is a schematic diagram of a pilot pattern according to an embodiment of the present disclosure (uplink transmission, two transmission layers, two DMRS ports, one PTRS port, and two DMRS ports are one group). As can be seen from FIG. 4B, FIG. 4B(1) is a schematic diagram of a pilot pattern of the transmission layer 1, and FIG. 4B(2) is a schematic diagram of a pilot pattern of the transmission layer 2. Since two layers of transmission are used, the power of the PUSCH of each layer is only half of the total power, and the PTRS is transmitted by only one port, and the total power is used, so the relative power ratio of the PTRS and the PUSCH is 3 dB.

FIG. 4C is a schematic diagram of a pilot pattern according to an embodiment of the present disclosure (uplink transmission, two transmission layers, two DMRS ports, two PTRS ports, and two DMRS ports are two groups). As can be seen from FIG. 4C, FIG. 4C(1) is a schematic diagram of a pilot pattern of the transmission layer 1, and FIG. 4C(2) is a schematic diagram of a pilot pattern of the transmission layer 2. Due to the orthogonal assumption between the PTRS and the data, the RE transmitting the PTRS at the transport layer 1 cannot map the data at the transport layer 2. Then the power on these unused REs can be used to enhance the transmit power of the PTRS. That is, in order to maintain the total power consistency, the PTRS power transmitted at each layer should be twice the power of the data channel.

It can be seen that all the formulas and tables in the embodiment of the present application are verified in FIG. 4A to FIG. 4C. The examples of other transmission layer numbers, DMRS port numbers, and PTRS port numbers are also the same, and are not enumerated here. "Other" in Figures 4A-4C refers to what does not define the upper mapping of the RE, and may map data channels or other reference signals. "Not used" means that the RE is not available due to orthogonal multiplexing of the PTRS and the data channel, or cannot be used to map data.

FIG. 5 is a schematic flowchart of a method for determining transmission power according to an embodiment of the present disclosure. As shown in Figure 5, it includes:

S50: the terminal device determines a relative power ratio of the PTRS and the PUSCH.

The terminal device may determine the relative power ratio of the PTRS and the PUSCH according to the formula provided in the embodiment of the present application, or by searching the table provided in the embodiment of the present application, or the terminal device may also determine the relative power ratio of the PTRS and the DMRS.

S51: The terminal device determines a transmit power of the PTRS.

The terminal device determines the transmission power of the PTRS based on the relative power ratio of the PTRS and the PUSCH, and the transmission power of the PUSCH, or determines the transmission power of the PTRS based on the relative power ratio of the PTRS and the DMRS, and the transmission power of the DMRS.

S52: The terminal device sends the PTRS by using the determined transmit power.

In the embodiment of the present application, the above-mentioned line transmission is taken as an example for description. For the downlink transmission, the new radio (NR) adopts the uplink and downlink symmetric DMRS and PTRS pilot pattern design, so in the embodiment of the present application, All formulas and tables are still applicable to the determination of the downlink PTRS power, as long as the "PUSCH" involved is changed to "PDSCH".

In the embodiment of the present application, after the pilot pattern is acquired by the base station, when the pilot pattern of the PTRS to be transmitted and the pilot pattern of other reference signals to be sent (ie, other reference signals except PTRS) conflict, the sentence pattern is changed. In other words, when the pilot pattern indicates that the PTRS to be transmitted and other reference signals to be transmitted occupy the same or the same RE (collision RE), optionally, the PTRS is not allowed to occupy the RE of other reference signals, that is, sending other The priority of the reference signal is greater than the priority of the transmitted PTRS. At this time, the base station device maps other reference signals to be transmitted to the conflicting RE, and transmits only other reference signals on the conflicting RE. The method described in the previous embodiment can be used to determine the PTRS transmission power.

Alternatively, the PTRS to be transmitted is allowed to occupy the RE of other reference signals to be transmitted. At this time, the base station device maps the PTRS to be transmitted to the conflicting RE, and only transmits the PTRS on the conflicting RE. Moreover, the power of the RE originally used to transmit other reference signals (excluding the conflicting REs that map the PTRS to be transmitted) can be used to power enhance the PTRS.

In general, the embodiment of the present application uses an RE that does not map data. In the embodiment of the present application, the meanings of the following expressions may be the same: an RE that cannot be used for mapping data, an RE that is not used for mapping data, an RE that does not map data, and a muted. The power of the PTRS is enhanced by the power of the PTRS, and the relative power ratio of the enhanced PTRS and the data (which may also be referred to as "the difference between the power of the PTRS and the power of the data") is equal to the number of transmission layers (in the multilayer transmission, The number of transmission layers is greater than or equal to 2), that is, 10log ₁₀ (N _layers ). When the number of PTRS ports is equal to the number of DMRS ports, in order to ensure orthogonal multiplexing of PTRS and data of different transport layers of the UE, some REs on a certain transport layer will not map data, and the power of these unmapped REs will be Used to enhance the power of the PTRS of the transport layer. In this case, the relative power ratio of the PTRS and the data on each transport layer is equal to the logarithm of the number of transport layers; when the number of PTRS ports is less than the number of DMRS ports, the power can be "borrowed" across layers, that is, using a certain transmission. The power of the RE of the data is not mapped on the layer to enhance the power of the PTRS on the other transport layer, and the relative power ratio of the transmission power of the PTRS and the data on the transport layer where the PTRS is located is equal to the logarithm of the number of transport layers.

In the embodiment of the present application, the transmitting device first determines the relative power ratio of the PTRS and the data channel or the DMRS by looking up the table or calculating, and then determining the sending power of the PTRS according to the data channel or the transmitting power of the DMRS, and then transmitting the PTRS by using the sending power. It can flexibly adapt to different DMRS port numbers, PTRS port numbers, and port multiplexing mode configuration to ensure efficient use of energy.

FIG. 6 is a schematic structural diagram of hardware of a communication device according to an embodiment of the present disclosure. As shown in FIG. 6, the communication device 60 includes:

a memory 61, configured to store program code including computer operating instructions;

The processor 62 is configured to execute the computer operation instruction to execute:

Determining a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS, wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable, PTRS and DMRS The relative power ratio is determined by the second function, the first variable, and the second variable, wherein the first variable includes a number of transmission layers or a number of DMRS ports, and the second variable includes a frequency domain density of the DMRS;

Determining the transmit power of the PTRS based on the relative power ratio of the PTRS and the data channel and the transmit power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmit power of the DMRS;

The transmitter 63 is configured to send the PTRS to another communication device by using the transmit power of the PTRS.

Optionally, the processor 62 is further configured to execute the computer operating instructions to perform:

Determining, by looking up the table, a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS;

The transmission power of the PTRS is determined based on the relative power ratio of the PTRS and the data channel and the transmission power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmission power of the DMRS.

Embodiment 2:

In the first embodiment, the sending end first obtains the relative power ratio of the PTRS and the data channel or the DMRS, and determines the sending power of the PTRS according to the data channel or the transmitting power of the DMRS. The sending power of the PTRS is directly calculated in the embodiment of the present application. .

In the LTE system, the uplink transmit power should satisfy the signal-to-interference plus noise ratio required for the PUSCH data transmission to achieve a 10% error rate based on different modulation and coding schemes (MCS). , SINR), the base station device determines the PUSCH transmission power based on this requirement.

Taking the above line transmission as an example, the calculation formula of the transmission power of the data channel can be:

In formula (16), i denotes a subframe number (or slot number, symbol number), c denotes a cell number (or beam number, beam group number), and j denotes a preset value, which can be configured or preset by the base station device ;

P _PUSCH,c (i) represents the transmission power of the terminal device transmitting the PUSCH to the cell c in the subframe i;

For _PCMAX, the linear value of _c(i) , P _CMAX,c (i) represents the available transmit power of the terminal device;

Is P _PUCCH (i) a linear value, P _PUCCH (i) denotes a transmission power of the terminal apparatus on the subframe i used in the PUCCH;

M _PUSCH,c (i) represents the bandwidth occupied by the PUSCH resources on the subframe i, in units of the number of RBs;

P _{O_PUSCH,c} (j) represents PUSCH reference power, P _{O_PUSCH,c} (j)=P _{O_UE_PUSCH,c} (j)+P _{O_NOMINAL_PUSCH,c} (j), where P _{O_NOMINAL_PUSCH,c} (j) represents half of cell c The static transmit power reference is usually a common value configured by the base station device for all terminal devices in the cell, and P _{O_UE_PUSCH,c} (j) represents the power offset of each terminal device in the cell c on the semi-static transmit power reference of the cell c. , usually a unique value configured by the base station device for each terminal device;

α _c (j) represents the degree of road damage compensation;

PL _c denotes a reference signal of the terminal device to the cell c (for example, a channel state information reference signal (CSI-RS), a cell-specific reference signal (CRS), a synchronization signal block (Synchronization) Signal block, referred to as SS Block), etc.) measured path loss value;

Δ _TF,c (i) indicates that the transmission power per RB is allowed to be adaptive to the transmission information data rate according to the transmission format;

f _c (i) indicates the closed-loop power control specific to the terminal device, which can be divided into two types: the cumulative value and the absolute value. Which mode is determined by the accumulationEnable parameter configured by the base station device, and if the TPC is accumulated, f _c (i)=f _c (i-1)+δ _PUSCH,c (iK _PUSCH ), that is, f _c (i) is the TPC integrated value before the ith subframe and received on the iK _PUSCH subframe The sum of the TPC values δ _PUSCH,c indicated in the Downlink Control Information (DCI).

In the embodiment of the present application, considering that PTRS is used for tracking phase to assist data demodulation, when directly calculating the transmission power of PTRS, reference may be made to some parameters in formula (16) to obtain a method for determining transmission power. ,include:

The terminal device acquires preset adjustment parameters and a transmission bandwidth of the PTRS;

The terminal device determines a transmit power of the PTRS, where the transmit power of the PTRS is determined by at least a preset function, an adjustment parameter, and a transmission bandwidth of the PTRS;

The terminal device transmits the PTRS to the base station device using the transmission power of the PTRS.

In the embodiment of the present application, considering that the PTRS is used to track the phase to assist data demodulation, when directly calculating the transmission power of the PTRS, reference may be made to some parameters in the formula (16), and the transmission power of the PTRS is determined by the following formula. :

In equation (17), the parameters P _CMAX,c (i), P _{O_PUSCH,c} (j), α _c (j), PL _c and f _c (i) are all multiplexed from equation (16). In addition, P _PTRS,c (i) represents the transmission power of the PTRS, including the transmission power of the terminal device transmitting the PTRS to the cell c in the subframe i, and the unit of the value is dBm; M _PTRS,c indicates the transmission of the PTRS Bandwidth; P _{PTRS_OFFSET, c} (m) represents the preset adjustment parameter, m=0 or 1.

In this embodiment of the present application, the base station device may configure or preset parameters by using RRC signaling or DCI.

In the embodiment of the present application, the transmission power of the PTRS is obtained by directly calculating, so that the terminal device can conveniently determine the transmission power of the PTRS.

Embodiment 3:

The embodiment of the present application provides another method for directly calculating the transmit power of the PTRS, including:

The terminal device acquires the PTRS reference power;

The terminal device determines a transmit power of the PTRS, where the transmit power of the PTRS is determined by at least a preset function and a PTRS reference power;

The terminal device transmits the PTRS to the base station device using the transmission power of the PTRS.

The terminal device can determine the transmit power of the PTRS by using the following formula:

In the formula (18), the meanings of the parameters P _PTRS,c (i), P _CMAX,c (i), α _c (j) and PL _c are the same as in the formula (17). In addition, P _{O_PTRS,c} (j) represents PTRS reference power, P _{O_PTRS,c} (j)=P _{O_NOMINAL_PTRS} +P _{O_UE_PTRS} , P _{O_NOMINAL_PTRS} indicates that the base station device configures a common value for all terminal devices in the cell c, and P _{O_UE_PTRS} indicates the base station. The device is a unique value configured for each terminal device in the cell c.

Further, the parameter g(i) may also be added in the formula (18), so that each terminal device can adjust the transmission power of the PTRS according to its own condition, as shown in the following formula:

Where g(i) represents an adjustment parameter specific to the terminal device.

Further, the parameters h(n _RS ), Δ _PTRS (F), and Δ _TxD (N _PTRS-port ) can also be added in the formula (18) to obtain the following formula:

In the formula (20), n _RS represents a priority parameter of the PTRS, and h(n _RS ) represents a power offset obtained by the terminal device through the n _RS ;

F denotes a pilot pattern, and Δ _PTRS (F) denotes an adjustment amount caused by the pilot pattern, and different adjustment amounts caused by different pilot patterns;

N _PTRS-port indicates the number of antenna ports that transmit the PTRS, and Δ _TxD (N _PTRS-port ) indicates the amount of adjustment of the power caused by the number of antenna ports. Different antenna port numbers also cause different adjustment amounts.

In the embodiment of the present application, the transmission power of the PTRS is obtained by directly calculating, so that the terminal device can conveniently determine the transmission power of the PTRS.

The method for determining the transmission power provided by the second embodiment and the third embodiment may also be performed by the communication device shown in FIG. 6. For example, the memory 61 is configured to store a program code including a computer operation instruction, and the processor 62 uses The required parameters are obtained, and the transmission power of the PTRS is calculated by using one of the parameters and equations (17)-(20), and the transmitter 63 is configured to transmit the PTRS to another communication device using the transmission power of the PTRS.

The embodiment of the present application further provides a computer readable storage medium for storing computer software instructions required to execute the foregoing processor, which includes a program for executing the above-mentioned processor.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims (58)

1. A method for determining transmission power, comprising:

   The first device determines a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS, wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable And determining a relative power ratio of the PTRS and the DMRS by using a second function, the first variable, and a second variable, wherein the first variable includes a number of transmission layers or a number of DMRS ports, and the second variable includes the DMRS Frequency domain density;

   Determining, by the first device, a transmit power of the PTRS based on a relative power ratio of the PTRS and the data channel and a transmit power of the data channel, or a relative power ratio of the PTRS and the DMRS and a transmit power of the DMRS;

   The first device sends the PTRS to the second device by using the transmit power of the PTRS.
2. The method according to claim 1, wherein the first device comprises a terminal device, the second device comprises a base station device, and the data channel comprises a physical uplink shared channel PUSCH.
3. The method according to claim 1, wherein the first device comprises a base station device, the second device comprises a terminal device, and the data channel comprises a physical downlink shared channel PDSCH.
4. The method according to any one of claims 1-3, wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable comprises:

   Relative power ratio of PTRS and data channel = 10log ₁₀ (X)

   Wherein the X includes the first variable.
5. The method according to any one of claims 1 to 3, wherein the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, including:

   Relative power ratio of PTRS and DMRS = 10log ₁₀ (XY)

   Wherein the X includes the first variable, and the Y includes the second variable.
6. A method for determining transmission power, comprising:

   Determining, by the lookup table, a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS;

   Determining, by the first device, a transmit power of the PTRS based on a relative power ratio of the PTRS and the data channel and a transmit power of the data channel, or a relative power ratio of the PTRS and the DMRS and a transmit power of the DMRS;

   The first device sends the PTRS to the second device by using the transmit power of the PTRS.
7. The method according to claim 6, wherein the first device comprises a terminal device, the second device comprises a base station device, and the data channel comprises a physical uplink shared channel PUSCH.
8. The method according to claim 6, wherein the first device comprises a base station device, the second device comprises a terminal device, and the data channel comprises a physical downlink shared channel PDSCH.
9. The method according to claim 7, wherein the determining, by the lookup table, the relative power ratio of the PTRS and the data channel comprises:

   The first device determines a relative power ratio of the PTRS and the data channel by looking up a table:

   Transport layer layer Relative power ratio (dB) of PTRS and PUSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9

   or

   DMRS port number Relative power ratio (dB) of PTRS and PUSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9
10. The method according to claim 8, wherein the determining, by the lookup table, the relative power ratio of the PTRS and the data channel comprises:

    The first device determines a relative power ratio of the PTRS and the data channel by looking up a table:

    Transport layer layer Relative power ratio (dB) of PTRS and PDSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9

    or

    DMRS port number Relative power ratio (dB) of PTRS and PDSCH

    1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9
11. The method according to any one of claims 6-8, wherein the determining, by the lookup table, the relative power ratio of the PTRS and the DMRS comprises:

    The first device determines a relative power ratio of the PTRS and the DMRS by looking up a table:

    Transport layer layer Frequency domain density of DMRS Relative power ratio (dB) of PTRS and DMRS 1 1/4 (-)6 2 1/4 (-)3 3 1/4 (-) 1.23 4 1/4 0 5 1/4 0 6 1/4 0 7 1/4 0 8 1/4 3

    or

    DMRS port number Frequency domain density of DMRS Relative power ratio (dB) of PTRS and DMRS 1 1/4 (-)6 2 1/4 (-)3 3 1/4 (-) 1.23 4 1/4 0 5 1/4 0 6 1/4 0 7 1/4 0 8 1/4 3
12. A processing chip, characterized in that the processing chip is used for:

    Determining a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS, wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable, The relative power ratio of the PTRS and the DMRS is determined by a second function, the first variable and the second variable, wherein the first variable comprises a number of transmission layers or a number of DMRS ports, and the second variable comprises a frequency domain of the DMRS density;

    The transmission power of the PTRS is determined based on the PTRS and the data channel relative power ratio and the transmission power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmission power of the DMRS.
13. The processing chip according to claim 12, wherein the data channel comprises a physical uplink shared channel PUSCH or a physical downlink shared channel PDSCH.
14. The processing chip according to claim 12 or 13, wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable comprises:

    Relative power ratio of PTRS and data channel = 10log ₁₀ (X)

    Wherein the X includes the first variable.
15. The processing chip according to claim 12 or 13, wherein the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, including:

    Relative power ratio of PTRS and DMRS = 10log ₁₀ (XY)

    Wherein the X includes the first variable, and the Y includes the second variable.
16. A processing chip, characterized in that the processing chip is used for:

    Determining, by looking up the table, a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS;

    The transmission power of the PTRS is determined based on the PTRS and the data channel relative power ratio and the transmission power of the data channel, or the relative power ratio of the PTRS and the DMRS and the transmission power of the DMRS.
17. The processing chip of claim 16, wherein the data channel comprises a physical uplink shared channel PUSCH.
18. The processing chip of claim 16, wherein the data channel comprises a physical downlink shared channel PDSCH.
19. The method according to claim 17, wherein said determining a relative power ratio of the PTRS and the data channel by looking up the table comprises:

    Determine the relative power ratio of the PTRS and data channel by looking up the following table:

    Transport layer layer Relative power ratio (dB) of PTRS and PUSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9

    or

    DMRS port number Relative power ratio (dB) of PTRS and PUSCH 1 0 2 3 3 4.77

    4 6 5 7 6 7.78 7 8.45 8 9
20. The processing chip according to claim 18, wherein the determining the relative power ratio of the PTRS and the data channel by the lookup table comprises:

    Determine the relative power ratio of the PTRS and data channel by looking up the following table:

    Transport layer layer Relative power ratio (dB) of PTRS and PDSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9

    or

    DMRS port number Relative power ratio (dB) of PTRS and PDSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9
21. The processing chip according to any one of claims 16 to 18, wherein the determining a relative power ratio of the PTRS and the DMRS by using a look-up table comprises:

    Determine the relative power ratio of the PTRS and DMRS by looking up the following table:

    DMRS port number Frequency domain density of DMRS Relative power ratio (dB) of PTRS and DMRS 1 1/4 (-)6 2 1/4 (-)3 3 1/4 (-) 1.23 4 1/4 0 5 1/4 0 6 1/4 0 7 1/4 0 8 1/4 3

    or

    DMRS port number Frequency domain density of DMRS Relative power ratio (dB) of PTRS and DMRS 1 1/4 (-)6 2 1/4 (-)3 3 1/4 (-) 1.23 4 1/4 0 5 1/4 0 6 1/4 0 7 1/4 0 8 1/4 3
22. A communication device, comprising:

    a processor, configured to determine a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS, wherein a relative power ratio of the PTRS and the data channel passes the first function and the first The variable determines that the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, wherein the first variable includes a number of transmission layers or a number of DMRS ports, and the second variable includes Describe the frequency domain density of the DMRS;

    Determining a transmit power of the PTRS based on the PTRS and a data channel relative power ratio and a transmit power of the data channel, or a relative power ratio of the PTRS and DMRS and a transmit power of the DMRS;

    And a transmitter, configured to send the PTRS to another communication device by using the transmit power of the PTRS.
23. The communication device according to claim 22, wherein said communication device comprises a terminal device, said another communication device comprises a base station device, and said data channel comprises a physical uplink shared channel PUSCH.
24. The communication device according to claim 22, wherein said communication device comprises a base station device, said another communication device comprises a terminal device, and said data channel comprises a physical downlink shared channel PDSCH.
25. The communication device according to any one of claims 22-24, wherein the relative power ratio of the PTRS and the data channel is determined by the first function and the first variable comprises:

    Relative power ratio of PTRS and data channel = 10log ₁₀ (X)

    Wherein the X includes the first variable.
26. The communication device according to any one of claims 22 to 24, wherein the relative power ratio of the PTRS and the DMRS is determined by the second function, the first variable, and the second variable, including:

    Relative power ratio of PTRS and DMRS = 10log ₁₀ (XY)

    Wherein the X includes the first variable, and the Y includes the second variable.
27. A communication device, comprising:

    a processor, configured to determine, by using a look-up table, a relative power ratio of the phase tracking reference signal PTRS and the data channel, or a relative power ratio of the PTRS and the demodulation reference signal DMRS;

    Determining a transmit power of the PTRS based on the PTRS and a data channel relative power ratio and a transmit power of the data channel, or a relative power ratio of the PTRS and DMRS and a transmit power of the DMRS;

    And a transmitter, configured to send the PTRS to the second device by using the transmit power of the PTRS.
28. The communication device according to claim 27, wherein said communication device comprises a terminal device, said another communication device comprises a base station device, and said data channel comprises a physical uplink shared channel PUSCH.
29. The communication device according to claim 27, wherein said communication device comprises a base station device, said another communication device comprises a terminal device, and said data channel comprises a physical downlink shared channel PDSCH.
30. The communication device according to claim 28, wherein said determining a relative power ratio of the PTRS and the data channel by looking up the table comprises:

    Determine the relative power ratio of the PTRS and data channel by looking up the following table:

    Transport layer layer Relative power ratio (dB) of PTRS and PUSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9

    or

    DMRS port number Relative power ratio (dB) of PTRS and PUSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9
31. The communication device according to claim 29, wherein said determining a relative power ratio of the PTRS and the data channel by the lookup table comprises:

    Determine the relative power ratio of the PTRS and data channel by looking up the following table:

    Transport layer layer Relative power ratio (dB) of PTRS and PDSCH 1 0 2 3 3 4.77

    4 6 5 7 6 7.78 7 8.45 8 9

    or

    DMRS port number Relative power ratio (dB) of PTRS and PDSCH 1 0 2 3 3 4.77 4 6 5 7 6 7.78 7 8.45 8 9
32. The communication device according to any one of claims 27 to 29, wherein the determining the relative power ratio of the PTRS and the DMRS by the lookup table comprises:

    Determine the relative power ratio of the PTRS and DMRS by looking up the following table:

    Transport layer layer Frequency domain density of DMRS Relative power ratio (dB) of PTRS and DMRS 1 1/4 (-)6 2 1/4 (-)3 3 1/4 (-) 1.23 4 1/4 0 5 1/4 0 6 1/4 0 7 1/4 0 8 1/4 3

    or

    DMRS port number Frequency domain density of DMRS Relative power ratio (dB) of PTRS and DMRS 1 1/4 (-)6 2 1/4 (-)3 3 1/4 (-) 1.23 4 1/4 0 5 1/4 0 6 1/4 0 7 1/4 0 8 1/4 3
33. A method for determining transmission power, comprising:

    The first device maps data to a plurality of transport layers, wherein the plurality of transport layers includes a first transport layer, the first transport layer corresponding to the first RE set and the second RE set, the first RE set And the second RE set includes a plurality of REs, and each of the first RE sets is mapped with a phase tracking reference signal PTRS, and each of the second RE sets cannot be used for mapping. data;

    The first device uses the power of all REs in the second RE set to enhance the transmit power of the PTRS mapped on all REs in the first RE set;

    The first device transmits the PTRS using the enhanced transmit power.
34. A communication device, comprising:

    a processor, configured to map data to a plurality of transport layers, wherein the plurality of transport layers includes a first transport layer, the first transport layer corresponding to a first RE set and a second RE set, the first The RE set and the second RE set both include a plurality of REs, and each of the first RE sets is mapped with a phase tracking reference signal PTRS, and each RE in the second RE set cannot be used. Mapping data;

    Using the power of all REs in the second RE set to enhance the transmit power of the PTRS mapped on all REs in the first RE set;

    a transmitter for transmitting the PTRS using the enhanced transmit power.
35. A method for determining transmission power, comprising:

    The terminal device determines the transmit power of the phase tracking reference signal PTRS according to a preset formula;

    The terminal device sends a PTRS to the base station device by using the transmit power of the PTRS;

    The preset formula includes:

    

    The i indicates a subframe number, the c indicates a cell number, the j indicates a preset value, the P _{PTRS, c} (i) indicates a transmit power of the PTRS, and the transmit power of the PTRS includes a The terminal device sends the transmit power of the PTRS to the cell c in subframe i, where P _CMAX,c (i) represents the available transmit power of the terminal device, and the P _{PTRS_OFFSET,c} (m) represents a preset adjustment. a parameter, the m=0 or 1, the M _{PTRS, c} represents a transmission bandwidth of the PTRS, the P _{O_PUSCH, c} (j) represents a PUSCH reference power, and the α _c (j) represents a road loss compensation degree The PL _c represents a path loss value measured by the terminal device for the cell c reference signal, and the f _c (i) represents the closed loop power control specific to the terminal device.
36. A method for determining transmission power, comprising:

    The terminal device determines the transmit power of the PTRS according to a preset formula;

    The terminal device sends a PTRS to the base station device by using the transmit power of the PTRS;

    The preset formula includes:

    

    The i indicates a subframe number, the c indicates a cell number, the j indicates a preset value, the P _{PTRS, c} (i) indicates a transmit power of the PTRS, and the transmit power of the PTRS includes a The terminal device sends the transmit power of the PTRS to the cell c in subframe i, where P _CMAX,c (i) represents the available transmit power of the terminal device, and the P _{O_PTRS,c} (j) represents the PTRS reference power. The α _c (j) represents a road loss compensation degree, and the PL _c represents a path loss value measured by the terminal device to the cell c reference signal.
37. The method according to claim 36, wherein the preset formula further comprises:

    

    Wherein g(i) represents an adjustment parameter specific to the terminal device.
38. The method according to claim 37, wherein the preset formula further comprises:

    

    The n _RS represents a priority parameter of the PTRS, the h(n _RS ) represents a power offset acquired by the terminal device by using the n _RS , and the F represents a pilot pattern, where the Δ _PTRS (F) represents an adjustment amount of power caused by the pilot pattern, the N _PTRS-port represents a number of antenna ports transmitting the PTRS, and the Δ _TxD (N _PTRS-port ) indicates that the number of antenna ports causes The amount of power adjustment.
39. A terminal device, comprising:

    a processor, configured to determine a transmit power of the phase tracking reference signal PTRS according to a preset formula;

    a transmitter, configured to send, by using a transmit power of the PTRS, a PTRS to the base station device;

    The preset formula includes:

    

    The i indicates a subframe number, the c indicates a cell number, the j indicates a preset value, the P _{PTRS, c} (i) indicates a transmit power of the PTRS, and the transmit power of the PTRS includes a The terminal device sends the transmit power of the PTRS to the cell c in subframe i, where P _CMAX,c (i) represents the available transmit power of the terminal device, and the P _{PTRS_OFFSET,c} (m) represents a preset adjustment. a parameter, the m=0 or 1, the M _{PTRS, c} represents a transmission bandwidth of the PTRS, the P _{O_PUSCH, c} (j) represents a PUSCH reference power, and the α _c (j) represents a road loss compensation degree The PL _c represents a path loss value measured by the terminal device for the cell c reference signal, and the f _c (i) represents the closed loop power control specific to the terminal device.
40. A terminal device, comprising:

    a processor, configured to determine a transmit power of the PTRS according to a preset formula;

    a transmitter, configured to send, by using a transmit power of the PTRS, a PTRS to the base station device;

    The preset formula includes:

    

    The i indicates a subframe number, the c indicates a cell number, the j indicates a preset value, the P _{PTRS, c} (i) indicates a transmit power of the PTRS, and the transmit power of the PTRS includes a The terminal device sends the transmit power of the PTRS to the cell c in subframe i, where P _CMAX,c (i) represents the available transmit power of the terminal device, and the P _{O_PTRS,c} (j) represents the PTRS reference power. The α _c (j) represents a road loss compensation degree, and the PL _c represents a path loss value measured by the terminal device to the cell c reference signal.
41. The terminal device according to claim 40, wherein the preset formula further comprises:

    

    Wherein g(i) represents an adjustment parameter specific to the terminal device.
42. The terminal device according to claim 41, wherein the preset formula further comprises:

    

    The n _RS represents a priority parameter of the PTRS, the h(n _RS ) represents a power offset acquired by the terminal device by using the n _RS , and the F represents a pilot pattern, where the Δ _PTRS (F) represents an adjustment amount of power caused by the pilot pattern, the N _PTRS-port represents a number of antenna ports transmitting the PTRS, and the Δ _TxD (N _PTRS-port ) indicates that the number of antenna ports causes The amount of power adjustment.
43. A method for determining transmission power, comprising:

    The first device determines a relative power ratio of the phase tracking reference signal PTRS and the data channel;

    Determining, by the first device, a transmit power of the PTRS based on the PTRS and a data channel relative power ratio;

    The first device sends the PTRS to the second device by using the transmit power of the PTRS;

    Wherein, in the uplink transmission or the downlink transmission, when the number of transmission layers is 1, the relative power ratio of the PTRS and the data channel is 0 dB.
44. The method according to claim 43, wherein the determining, by the first device, the transmit power of the PTRS based on the PTRS and a data channel relative power ratio comprises:

    The first device determines a transmit power of the PTRS based on the PTRS and a data channel relative power ratio and a transmit power of the data channel.
45. The method according to claim 43 or 44, wherein in the uplink transmission or the downlink transmission, when the number of transmission layers is 2, the relative power ratio of the PTRS and the data channel is 3 dB.
46. The method according to claim 43 or 44, wherein in the uplink transmission or the downlink transmission, when the number of transmission layers is 3, the relative power ratio of the PTRS and the data channel is 4.77 dB.
47. The method according to claim 43 or 44, wherein, in the uplink transmission or the downlink transmission, when the number of transmission layers is 4, the relative power ratio of the PTRS and the data channel is 6 dB.
48. The method according to claim 43 or 44, wherein, in the downlink transmission, when the number of transmission layers is 5, the relative power ratio of the PTRS and the data channel is 7 dB.
49. The method according to claim 43 or 44, wherein, in the downlink transmission, when the number of transmission layers is 6, the relative power ratio of the PTRS and the data channel is 7.78 dB.
50. A communication device, comprising:

    a processor: configured to determine a relative power ratio of the phase tracking reference signal PTRS and the data channel;

    Determining a transmit power of the PTRS based on the PTRS and a data channel relative power ratio;

    a transmitter: configured to send the PTRS to a second device by using a transmit power of the PTRS;

    Wherein, in the uplink transmission or the downlink transmission, when the number of transmission layers is 1, the relative power ratio of the PTRS and the data channel is 0 dB.
51. The apparatus according to claim 50, wherein the processor is specifically configured to determine a transmit power of the PTRS based on the PTRS and a data channel relative power ratio and a transmit power of the data channel.
52. The apparatus according to claim 50 or 51, wherein, in the uplink transmission or the downlink transmission, when the number of transmission layers is 2, the relative power ratio of the PTRS and the data channel is 3 dB.
53. The apparatus according to claim 50 or 51, wherein, in the uplink transmission or the downlink transmission, when the number of transmission layers is 3, the relative power ratio of the PTRS and the data channel is 4.77 dB.
54. The apparatus according to claim 50 or 51, wherein, in the uplink transmission or the downlink transmission, when the number of transmission layers is 4, the relative power ratio of the PTRS and the data channel is 6 dB.
55. The apparatus according to claim 50 or 51, wherein, in the downlink transmission, when the number of transmission layers is 5, the relative power ratio of the PTRS and the data channel is 7 dB.
56. The apparatus according to claim 50 or 51, wherein, in the downlink transmission, when the number of transmission layers is 6, the relative power ratio of the PTRS and the data channel is 7.78 dB.
57. A computer storage medium having stored thereon a computer program, characterized in that the program, when executed by a processor, implements the method of any of claims 43-49.
58. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of claims 43-49.

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