CN112583759A

CN112583759A - Information transmission method and communication device

Info

Publication number: CN112583759A
Application number: CN201910928049.6A
Authority: CN
Inventors: 袁世通; 刘凤威; 黄煌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2021-03-30
Anticipated expiration: 2039-09-27
Also published as: CN112583759B; WO2021057948A1

Abstract

The application provides an information transmission method and a communication device. In the information transmission method, the indication information received by the terminal device may be used to indicate that the modulation mode of the uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation, and further, the terminal device may determine a Phase Tracking Reference Signal (PTRS) scaling factor based on the indication information. Therefore, when the modulation mode of uplink transmission is APSK or non-uniform constellation, the terminal device can determine the power for sending the PTRS by using the PTRS scaling factor so as to send the PTRS. Compared with a QAM modulation mode, the APSK or the non-uniform constellation has better phase noise resistance, so that the PTRS scaling factor corresponding to the APRK or the non-uniform constellation is determined based on the indication information, the PTRS can be mapped to the outermost periphery of the APRK or the non-uniform constellation, the sending power of a reference signal can be improved, and the phase noise compensation precision of a receiving end can be improved.

Description

Information transmission method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information transmission method and a communication apparatus.

Background

In order to increase the capacity of communication systems, a new generation of 5G communication systems is shifting to higher millimeter wave frequencies. However, due to mismatch of transmitter and receiver frequency oscillators, millimeter wave devices suffer from severe phase noise, as shown in fig. 1, the left diagram is a 64 Quadrature Amplitude Modulation (QAM) constellation in an ideal case, and the right diagram is a 64QAM constellation affected by phase noise.

In a multi-carrier system, the phase noise may be embodied as a Common Phase Error (CPE) and an inter-carrier interference (ICI). Aiming at the adverse effect brought by the phase noise, the new generation 5G communication system can estimate the influence degree of the reference signal on the phase noise, and then perform phase noise compensation at the receiving end. However, with the development of 5G communication systems, how to further improve the phase-to-average power ratio (PAPR) of signals is a problem to be solved.

Disclosure of Invention

The application provides an information transmission method and a communication device, which are beneficial to improving the sending power of a reference signal and improving the phase noise compensation precision of a receiving end.

In a first aspect, the present application provides an information transmission method. In the information transmission method, the terminal device may receive indication information sent by the network device, where the indication information is used to indicate that the modulation mode adopted by the uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation. The terminal device can determine a Phase Tracking Reference Signal (PTRS) scaling factor according to the indication information so as to determine the power for transmitting the PTRS. Compared with a QAM modulation mode, the APSK or non-uniform constellation has better phase noise resistance and lower PAPR, so that the PTRS scaling factor corresponding to the APSK or non-uniform constellation is determined based on the indication information so as to map the PTRS to the outermost periphery of the APSK or non-uniform constellation, the transmission power of the reference signal can be improved, and the phase noise compensation precision of a receiving end can be improved.

In an embodiment, the indication information is used to indicate that the mapping manner of the uplink transmission is APSK or a non-uniform constellation, and the terminal device may determine a PTRS scaling factor according to the indication information. Or, the indication information is used to indicate that the constellation used for uplink transmission is APSK or a non-uniform constellation. This embodiment facilitates APSK or non-uniform constellation modulation of data and uses PTRS scaling factors to map PTRS to the outermost or most reliable constellation points on the APSK or non-uniform constellation.

In an embodiment, after determining that the modulation mode of the uplink transmission is the APSK and PTRS scaling factor according to the indication information, the terminal device may send the PTRS according to the APSK and PTRS scaling factor.

In one possible design, the terminal device sends the PTRS according to the APSK and the PTRS scaling factor, including: the terminal equipment modulates the PTRS sequence to four constellation points on the innermost circle constellation in the APSK to obtain a first modulation symbol sequence; and the terminal equipment utilizes the PTRS scaling factor to carry out power boosting on the first modulation symbol sequence so as to map each modulation symbol in the first modulation symbol sequence to four constellation points on the outermost circular constellation in the APSK, and obtain and send a second symbol sequence. Therefore, in the design, the PTRS can be mapped to the outermost periphery of the APSK or the constellation point with the highest reliability, so that the transmission power of the PTRS is improved, and the phase noise compensation precision of a receiving end can be improved.

In another possible design, the PTRS may be mapped to the outermost periphery of APSK or to the constellation points with the highest reliability and equal phase difference. In the design, the phase difference between constellation points mapped by the PTRS is large, so that the phase noise resistance of the PTRS can be improved.

In another embodiment, the terminal device further determines the phase rotation factor according to the indication information. Correspondingly, the terminal device may perform phase rotation on the four constellation points in the first modulation symbol sequence according to the phase rotation factor, and then perform power boosting by using the PTRS scaling factor, and map the power boosting to the four constellation points on the outermost circular constellation. Or, after the terminal device performs power boosting on the first modulation symbol sequence by using the PTRS scaling factor, the terminal device further maps the first modulation symbol after power boosting to four constellation points on the outermost circular constellation based on the phase rotation factor. Therefore, when the phases of the four constellation points of the PTRS mapped on the innermost annular constellation and the four constellation points of the PTRS mapped on the outermost annular constellation are not equal, the PTRS can be transmitted in an APSK modulation mode through the design, and therefore the phase noise compensation precision of a receiving end can be improved.

In an embodiment, after determining that the modulation mode of the uplink transmission is the non-uniform constellation and the PTRS scaling factor according to the indication information, the terminal device may send the PTRS according to the non-uniform constellation and the PTRS scaling factor.

In one possible design, a terminal device sends a PTRS using a modulation scheme of uplink transmission as a non-uniform constellation and a PTRS scaling factor, including: the terminal equipment modulates the PTRS sequence to four constellation points with the minimum amplitude in the non-uniform constellation to obtain a first modulation symbol sequence; and the terminal equipment utilizes the PTRS scaling factor to carry out power boost on the first modulation symbol sequence, maps the first modulation symbol sequence to four constellation points with the maximum amplitude in the non-uniform constellation, and obtains and sends a second modulation symbol sequence.

In another possible design, the terminal device may map the PTRS to the constellation point with the largest amplitude and equal phase difference in the non-uniform constellation. In the design, the phase difference between constellation points mapped by the PTRS is large, so that the phase noise resistance of the PTRS can be improved.

In another embodiment, the terminal device may further determine the phase rotation factor according to the indication information. That is to say, in this embodiment, it may be determined, according to the indication information, that the modulation scheme of the uplink transmission is the non-uniform constellation and the PTRS scaling factor and the phase rotation factor corresponding to the non-uniform constellation. Correspondingly, the terminal device may perform phase rotation on the first modulation symbol sequence according to the phase rotation factor, and then perform power boosting by using the PTRS scaling factor, and map the power boosting to the four constellation points with the largest amplitude in the non-uniform constellation. Or the terminal equipment utilizes the PTRS scaling factor to perform power boosting on the first modulation symbol sequence, and then maps the first modulation symbol after power boosting to four constellation points with the maximum amplitude in the non-uniform constellation based on the phase rotation factor. Therefore, when the phases of the four constellation points with the minimum amplitude mapped by the PTRS are not equal to the four constellation points with the maximum amplitude mapped by the PTRS, the implementation mode can realize the transmission of the PTRS in a non-uniform constellation modulation mode, so that the phase noise compensation precision of a receiving end can be improved.

In an embodiment, the indication information may be an index of a modulation and coding scheme or a newly added indication field.

In one embodiment, the PTRS scaling factor for non-uniform constellation or APSK is predefined or configured for higher layer signaling.

In an example, after receiving the indication information sent by the network device, the terminal device may obtain the PTRS scaling factor according to predefined content.

In another example, the higher layer signaling configuration indicates a table of correspondence between information and PTRS scaling factors. In this way, after the terminal device receives the indication information sent by the network device, the PTRS scaling factor can be obtained based on the corresponding relation table, so as to determine the power for sending the PTRS.

In one embodiment, the predefined or higher layer signaling configuration:

when the APSK is 4-12APSK with radius proportion of 3/1 of the circular ring constellation, the PTRS scaling factor of the APSK is

When the APSK is 4-12APSK with radius proportion of 2/1 of the circular ring constellation, the PTRS scaling factor of the APSK is

When the APSK is 4-12APSK with the radius ratio of 2.5/1 of the circular ring constellation, the PTRS scaling factor of the APSK is

As can be seen, in this embodiment, when the terminal device determines that the modulation scheme adopted for uplink transmission is one of the APSKs according to the indication information, the PTRS scaling factor may be determined according to the content configured by the predefined or higher layer signaling.

For the non-uniform constellation, the PTRS scaling factor corresponding to each non-uniform constellation that is similar to the non-uniform constellation may also be predefined or configured by a higher layer signaling, so that it is beneficial for the terminal device to determine the PTRS scaling factor according to the modulation method indicated by the indication information and the corresponding relationship.

In one embodiment, the PTRS scaling factor for APSK is calculated based on the power normalization factor and the distance L of APSK. The distance L is a distance between a constellation point in the APSK and an origin of the APSK, and the constellation point is a constellation point mapped by the PTRS in the APSK. For example, the distance is a distance between a constellation point with the highest normalized quantization power in the APSK and the origin, and the constellation point with the highest normalized quantization power is the constellation point mapped by the PTRS using the PTRS scaling factor. Wherein the origin is the origin of the coordinate system of the APSK.

In one embodiment, the PTRS scaling factor for the non-uniform constellation is calculated based on the power normalization factor and the distance L for the non-uniform constellation. The distance L is a distance between a constellation point in the non-uniform constellation and an origin of the non-uniform constellation, the constellation point being a constellation point to which the PTRS is mapped in the non-uniform constellation. For example, the distance is a distance between a constellation point with the highest normalized quantization power in the non-uniform constellation and the origin, and the constellation point with the highest normalized quantization power is the constellation point mapped by the PTRS scaling factor for boosting the PTRS.

In one embodiment, the power normalization factor of APSK is predefined or calculated based on the radius or radius ratio of multiple circular ring constellations in APSK.

In one embodiment, the power normalization factor for the non-uniform constellation is predefined or calculated based on the values of the constellation points in the non-uniform constellation.

In one embodiment, the PTRS scaling factor, the power normalization factor, or the radius or radius ratio of the plurality of circular ring constellations of the APSK is determined based on the constellation distribution of the APSK. For example, the radius or the radius ratio of each ring of the APSK is determined according to the constellation distribution of the APSK; determining a power normalization factor based on the radius or the radius ratio of each ring; the PTRS scaling factor for APSK is determined based on the power normalization factor and the distance L described above.

In one embodiment, the PTRS scaling factor and the power normalization factor of the non-uniform constellation are determined based on the constellation distribution of the non-uniform constellation. For example, a power normalization factor is determined according to the constellation distribution of the non-uniform constellation; the PTRS scaling factor for the non-uniform constellation is determined based on the power normalization factor and the distance L described above.

In another embodiment, the terminal device further receives second indication information sent by the network device, where the second indication information is used to indicate the phase rotation factor; further, the terminal device determines a phase rotation factor according to the second indication information to determine a rotation phase of transmitting the PTRS.

In one embodiment, the phase rotation factor is predefined or configured by higher layer signaling. For example, the phase rotation factor corresponding to each modulation scheme may be predefined or configured by higher layer signaling. In this embodiment, the terminal device may determine the phase rotation factor according to the indication information and the content configured by the predefined or higher layer signaling.

In another embodiment, the phase rotation factor corresponding to each APSK or non-uniform constellation may be calculated based on the constellation distribution of each APSK or non-uniform constellation.

In a second aspect, an embodiment of the present application further provides an information transmission method. In the information transmission method, network equipment sends indication information to terminal equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation. Therefore, the terminal equipment can determine the PTRS scaling factor of the phase tracking reference signal according to the indication information so as to determine the power for transmitting the PTRS.

In one embodiment, the information transmission method further includes: the network equipment determines that the constellation diagram adopted by the uplink transmission is APSK or non-uniform constellation. Furthermore, the network device may send the indication information to the terminal device, so that the terminal device determines that the modulation method adopted by the uplink transmission is APSK or a non-uniform constellation.

In another embodiment, the indication information is also used to determine a phase rotation factor that is used to determine the phase of rotation of the transmit PTRS.

The PTRS scaling factor for APSK or non-uniform constellation is predefined or configured for higher layer signaling.

In one embodiment, the PTRS scaling factor of the APSK, either predefined or configured for higher layer signaling, is:

In one embodiment, the PTRS scaling factor of the APSK or the non-uniform constellation is calculated based on a power normalization factor of the APSK or the non-uniform constellation and a distance L; the distance L is a distance between a constellation point and an origin point in the APSK or the non-uniform constellation; the constellation point is a constellation point to which the PTRS is mapped in the APSK or the non-uniform constellation.

In one embodiment, the power normalization factor of the APSK or the non-uniform constellation is predefined; or the power normalization factor of the APSK is obtained by calculation based on the radius or the radius ratio of a plurality of circular ring constellations in the APSK; the power normalization factor of the non-uniform constellation is calculated and obtained based on the energy of each constellation point in the non-uniform constellation and the number of the constellation points.

In one embodiment, the PTRS scaling factor, power normalization factor or radius ratio of a plurality of circular ring constellations of the APSK is determined based on a predefined constellation distribution of the APSK; the PTRS scaling factor or power normalization factor of the non-uniform constellation is determined based on a predefined constellation distribution of the non-uniform constellation.

In another embodiment, the network device further sends second indication information to the terminal device, where the second indication information is used to indicate a rotating phase factor of the PTRS. Thus, it is advantageous for the terminal device to determine the rotational phase of the transmission PTRS according to the second indication information.

In a third aspect, the present application further provides an information transmission method. The information transmission method can map the uplink control information or PTRS to a physical uplink shared channel for transmission. In the information transmission method, the terminal device can receive indication information sent by the network device, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation; and the terminal equipment determines a placeholder according to the indication information, wherein the placeholder is used for mapping the coded uplink control information UCI bit or PTRS bit to the amplitude phase shift keying APSK or the constellation point of the non-uniform constellation.

In one embodiment, the placeholder is used to map the encoded UCI bits or PTRS bits onto equi-phase spaced constellation points on the outermost circular constellation of the amplitude phase shift keying APSK.

In one embodiment, the coded UCI bits include C0 and C1, the extra bit C2 is equal to (C0+ C1) mod2, xx is a space-occupying bit, and then the constellation points mapped by the coded UCI bits are: xxC0C1, xxC2C0, xxC1C 2.

In one embodiment, the placeholder is predefined or higher layer signaling configured. For example, the protocol may predefine or higher layer signaling may configure the placeholder corresponding to each APSK. Therefore, the terminal device can determine the placeholder according to the indication information, and then map the coded UCI bit or PTRS bit to the constellation point with the highest normalized quantization power in the outermost ring or the non-uniform constellation of the APSK by using the placeholder.

Therefore, the information transmission method can map the coded information bits to the constellation points of the outermost circular constellation of the APSK, or map the coded information bits to the constellation points with the highest normalized quantization power in the non-uniform constellation, thereby realizing the maximization of the Euclidean distance, being beneficial to enhancing the phase noise resistance and improving the reliability of UCI or PTRS.

In a fourth aspect, an embodiment of the present application further provides a communication apparatus. The communication device may be a terminal device, a device in the terminal device, or a device capable of being used in cooperation with the terminal device. The communication device has a function of implementing part or all of the functions of the terminal device in the method examples of the first aspect or the third aspect, for example, the function of the terminal device may have the functions in part or all of the embodiments in this application, or may have the function of implementing any one of the embodiments in this application separately. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the terminal device may include a processing unit and a transceiver unit in its structure. The processing unit is configured to support the terminal device to perform corresponding functions in the method provided by the first aspect or the third aspect. The transceiver unit is used for supporting communication between the terminal device and other devices, and the other devices may be network devices. The terminal device may further comprise a memory unit for coupling with the processing unit and the transceiving unit, which stores program instructions and data necessary for the terminal device.

In one embodiment, a terminal device includes a processing unit and a transceiving unit;

the communication unit is used for receiving indication information sent by network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

and the processing unit is used for determining a PTRS scaling factor according to the indication information, wherein the PTRS scaling factor is used for determining the power for transmitting the PTRS.

In another embodiment, in the terminal device:

the communication unit is used for receiving indication information sent by the network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

and the processing unit is used for determining a placeholder according to the indication information, wherein the placeholder is used for mapping the encoded uplink control information UCI bit or PTRS bit to the amplitude phase shift keying APSK or a constellation point of the non-uniform constellation.

As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

In one embodiment, a terminal device includes a processor and a transceiver;

the transceiver is used for receiving indication information sent by network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

a processor, configured to determine a PTRS scaling factor according to the indication information, where the PTRS scaling factor is used to indicate a power at which the PTRS is transmitted.

In another embodiment, in the terminal device:

the transceiver is used for receiving indication information sent by the network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

and the processor is used for determining a placeholder according to the indication information, wherein the placeholder is used for mapping the encoded uplink control information UCI bit or PTRS bit to the amplitude phase shift keying APSK or a constellation point of the non-uniform constellation.

In a specific implementation, the processor may be configured to perform the method provided in the first aspect or the third aspect, such as but not limited to baseband related processing, and the transceiver may be configured to perform, such as but not limited to radio frequency transceiving. The above devices may be respectively disposed on separate chips, or at least a part or all of the devices may be disposed on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor and the transceiver can be integrated on the same chip, and the digital baseband processor can be arranged on a separate chip. With the development of integrated circuit technology, more and more devices can be integrated on the same chip, for example, a digital baseband processor can be integrated on the same chip with various application processors (such as, but not limited to, a graphics processor, a multimedia processor, etc.). Such a chip may be referred to as a system on chip (soc). Whether each device is separately located on a different chip or integrated on one or more chips often depends on the specific needs of the product design. The embodiment of the present application does not limit the specific implementation form of the above device.

In a fifth aspect, an embodiment of the present application further provides a communication apparatus. The communication device may be a network device, a device in the network device, or a device capable of being used in cooperation with the network device. The communication apparatus has a function of implementing part or all of the functions of the network device in the method example described in the second aspect, for example, the function of the network device may have the functions in part or all of the embodiments in this application, or may have the functions of implementing any of the embodiments in this application separately. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the network device may include a processing unit and a transceiver unit in its structure. The processing unit is configured to support the terminal device to perform corresponding functions in the method provided by the second aspect. The transceiver unit is used for supporting communication between the network device and other devices, and the other devices may be terminal devices. The network device may further comprise a storage unit for coupling with the processing unit and the transceiving unit, which stores program instructions and data necessary for the network device.

In one embodiment, a network device includes a processing unit and a transceiver unit;

the processing unit is used for determining that the modulation mode of uplink transmission is APSK or a non-uniform constellation;

and the transceiver unit is used for sending indication information to the terminal equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation.

Therefore, the terminal equipment can determine the PTRS scaling factor of the phase tracking reference signal according to the indication information so as to determine the power for transmitting the PTRS.

As an example, the processing unit may be a processor, the transceiving unit may be a transceiver, and the storage unit may be a memory.

In one embodiment, a network device includes a processor and a transceiver;

the processor is used for determining that the modulation mode of uplink transmission is APSK or a non-uniform constellation;

the transceiver is used for sending indication information to the terminal equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation.

In a specific implementation, the processor may be configured to perform the method provided in the second aspect, such as but not limited to baseband related processing, and the transceiver may be configured to perform, such as but not limited to radio frequency transceiving. The above devices may be respectively disposed on separate chips, or at least a part or all of the devices may be disposed on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor and the transceiver can be integrated on the same chip, and the digital baseband processor can be arranged on a separate chip. With the development of integrated circuit technology, more and more devices can be integrated on the same chip, for example, a digital baseband processor can be integrated on the same chip with various application processors (such as, but not limited to, a graphics processor, a multimedia processor, etc.). Such a chip may be referred to as a system on chip (soc). Whether each device is separately located on a different chip or integrated on one or more chips often depends on the specific needs of the product design. The embodiment of the present application does not limit the specific implementation form of the above device.

In a sixth aspect, an embodiment of the present application provides a processor, configured to execute the method provided in the first aspect or the third aspect. In the process of executing the method provided by the first aspect or the third aspect, the processes of transmitting the information or the data and receiving the information or the data may be understood as a process of outputting the information or the data by a processor and a process of receiving the information or the data by the processor. Specifically, upon outputting the information or data, the processor outputs the information or data to the transceiver for transmission by the transceiver. Further, the information or data may need to be processed after being output by the processor before reaching the transceiver. Similarly, when the processor receives the input information or data, the transceiver receives the information or data and inputs the information or data into the processor. Further, after the transceiver receives the information or data, the information or data may need to be processed and then input to the processor.

Based on the above principle, for example, the indication information received in the method provided in the first aspect may be understood as the indication information received by the transceiver input into the processor.

As such, the operations relating to the transmission, and reception by the processor may be more generally understood as operations relating to processor output and reception, input, and the like, rather than operations relating directly to transmission, and reception by the rf circuitry and antenna, unless specifically stated otherwise, or otherwise not contradicted by their actual role or inherent logic in the associated description.

In particular implementations, the processor may be a processor dedicated to performing the methods, or may be a processor executing computer instructions in a memory to perform the methods, such as a general purpose processor. The memory may be a non-transitory (non-transitory) memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor or separately disposed on different chips.

In a seventh aspect, an embodiment of the present application further provides a chip system, where the chip system includes a processor and an interface. The chip system can be deployed in a terminal device.

In one possible design, the interface is configured to receive indication information sent by the network device, where the indication information is used to indicate that a modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation; the processor is configured to determine a PTRS scaling factor according to the indication information, the PTRS scaling factor being used to determine a power at which to transmit the PTRS.

In one possible design, the processor is configured to invoke and execute a computer program stored in the memory to support the terminal device to implement the functions related to the first aspect or the third aspect, for example, determine a PTRS scaling factor according to the indication information, where the PTRS scaling factor is used to determine the power for transmitting the PTRS.

In one possible design, the system-on-chip further includes a memory for storing necessary program instructions and data for the terminal device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In an eighth aspect, an embodiment of the present application further provides a chip system, where the chip system includes a processor and an interface. The system-on-chip may be deployed in a network device.

In one possible design, the processor is configured to determine that the modulation scheme of the uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation; the interface is used for sending indication information, and the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation.

In one possible design, the processor is configured to retrieve from the memory and execute the computer program stored in the memory to support the terminal device to implement the function according to the second aspect, for example, determine that the modulation scheme of the uplink transmission is amplitude phase shift keying APSK or non-uniform constellation.

In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the terminal device, which includes a program for executing the method according to the first aspect or the third aspect.

In a tenth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the terminal device, which includes a program for executing the method according to the second aspect.

In an eleventh aspect, embodiments of the present application provide a computer program product comprising instructions, which when run on a computer, cause the computer to perform the method of the first or third aspect.

In a twelfth aspect, embodiments of the present application provide a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method of the second aspect described above.

In a thirteenth aspect, an embodiment of the present application provides a system, where the system includes a terminal device and a network device. The network device is configured to determine that the modulation scheme of the uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation, and send indication information, where the indication information is used to indicate that the modulation scheme of the uplink transmission is the Amplitude Phase Shift Keying (APSK) or the non-uniform constellation. The terminal equipment is used for receiving indication information sent by the network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation; and determining a PTRS scaling factor according to the indication information, wherein the PTRS scaling factor is used for determining the power for transmitting the PTRS.

Drawings

Fig. 1 is a schematic diagram of a 64QAM constellation provided in an embodiment of the present application under an ideal condition and under the influence of phase noise;

fig. 2 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

fig. 3 is a schematic diagram of a BPSK constellation provided in an embodiment of the present application;

fig. 4 is a schematic diagram of a constellation of QPSK provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of a constellation of 4-12APSK provided in the embodiment of the present application;

fig. 6 is a schematic diagram of a constellation of 8-8APSK provided in an embodiment of the present application;

fig. 7 is a schematic diagram of a constellation of 64APSK provided in an embodiment of the present application;

fig. 8 is a constellation diagram of a non-uniform constellation according to an embodiment of the present application;

fig. 9 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

fig. 10 is a schematic flowchart of another information transmission method provided in an embodiment of the present application;

FIG. 11 is a schematic diagram of another constellation of 4-12APSK provided in the embodiment of the present application;

fig. 12 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a chip according to an embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the application can be particularly applied to various communication systems. For example, with the continuous development of communication technology, the technical solution of the present application can also be used in future networks, such as a 5G system, which can also be referred to as a New Radio (NR) system; or may also be used for device-to-device (D2D) systems, machine-to-machine (M2M) systems, and so forth.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one network device and one terminal device, the number and form of the devices shown in fig. 2 are used for example and do not constitute a limitation to the embodiments of the present application, and two or more network devices and two or more terminal devices may be included in practical applications.

In this application, the network device may be a device with a wireless transceiving function or a chip disposed on the device, and the network device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), network equipment controller (BSC), network equipment transceiver station (BTS), home network equipment (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), Access Point (AP) in wireless fidelity (WIFI) system, wireless relay Node, wireless backhaul Node, transmission point (TRP or transmission point, TP), etc., and may also be equipment used in 5G, 6G, or even 7G systems, such as NB in NR systems, or transmission point (TRP or TP), equipment (e.g., a group of antennas) in 5G, or a group of antennas including panels, it may also be a network node forming a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), or a piconet network device (pico cell), or a femto network device (femto cell), or a vehicle networking (V2X) or a Road Side Unit (RSU) in an intelligent driving scenario.

In some deployments, the gNB or transmission point may include a Centralized Unit (CU), a Distributed Unit (DU), and so on. The gNB or transmission point may also include a Radio Unit (RU). A CU implements part of the function of a gNB or a transmission point, and a DU implements part of the function of the gNB or the transmission point, for example, the CU implements the function of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer, and the DU implements the function of a Radio Link Control (RLC), a Media Access Control (MAC) layer and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the physical layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, can also be considered as being transmitted by the DU or the DU + RU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in a Core Network (CN), which is not limited herein.

In this application, a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a user agent, or a user equipment, and may be applied to 5G, 6G, or even 7G systems. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wireless terminal in the aforementioned V2X car networking, or an RSU of a wireless terminal type, and the like.

To facilitate understanding of the embodiments disclosed herein, the following description is made.

(1) Some of the scenarios in the embodiment disclosed in the present application are described by taking a scenario of an NR network in a wireless communication network as an example, it should be noted that the solution in the embodiment disclosed in the present application may also be applied to other wireless communication networks, and corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.

(2) Embodiments disclosed herein will present various aspects, embodiments, or features of the application in the context of a system comprising a plurality of devices, components, modules, etc. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.

(3) In the embodiments disclosed herein, the term "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.

(4) In the embodiments disclosed in the present application, "of", "corresponding" and "corresponding" may be sometimes used in a mixed manner, and it should be noted that the intended meaning is consistent when the difference is not emphasized.

(5) In the embodiments disclosed in the present application, at least one may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present application. In the embodiments disclosed in the present application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", and the like, and the technical features described in the "first" and the "second" are not in sequence or in magnitude.

To facilitate an understanding of the embodiments disclosed herein, some concepts related to the embodiments of the present application will be first explained. The description of these concepts includes, but is not limited to, the following.

1. Modulation system

In a communication system, information bits to be transmitted are generally represented by 0 and 1, and a radio signal is an analog signal having a frequency, an amplitude, and a phase. Thus, information bits may be carried on the radio signal by modulation.

For example, fig. 3 is a schematic diagram of a BPSK constellation. In the Binary Phase Shift Keying (BPSK) constellation shown in fig. 3, the phase of the information bit 1 is 0, and the phase of the information bit 0 is pi.

As another example, fig. 4 is a schematic diagram of a QPSK constellation. In Quadrature Phase Shift Keying (QPSK) shown in fig. 4, each constellation point has its own amplitude and phase, and the distances between the four constellation points and the origin are the same, and have the same amplitude; the phase difference between each constellation point and the adjacent constellation point is pi/2. It can be seen that the phase changes more in QPSK and each constellation point can represent two information bits.

Wherein the origin point described herein refers to the origin of the coordinate system of the corresponding constellation diagram.

As shown in fig. 3 and 4, each constellation point has its own amplitude and phase, and each constellation point may also be referred to as a symbol.

Each signal s (t) may be denoted as x (t) + jy (t), the real part x (t) may be regarded as an amplitude modulation of the cosine signal; the imaginary part y (t) can be considered as amplitude modulation of the sinusoidal signal. x (t) and y (t) are orthogonal components of the signal s (t) decomposition, so x (t) can be called In-phase component (In-phase component), and the horizontal axis In the constellation diagram is represented by I; y (t) may be referred to as a Quadrature component (Q), so the vertical axis in the constellation diagram is denoted by Q.

And the number of the information bits represented by each constellation point is the modulation order of the modulation mode. For example, the modulation order of BPSK shown in fig. 3 is 1; the modulation order of QPSK shown in fig. 4 is 2.

2. Phase Tracking Reference Signal (PTRS)

The phase tracking reference signal is used for channel estimation to evaluate the influence of phase noise on the signal and partially compensate for signal distortion caused by the phase noise.

3. Amplitude Phase Shift Keying (APSK)

APSK is an amplitude phase modulation mode, in which constellation points are radially dispersed from the center to the outside.

As shown in fig. 5, fig. 5 is a schematic diagram of a constellation of 4-12 APSK. 4-12APSK indicates that the APSK includes two circular ring constellations, where the innermost circular ring constellation has 4 constellation points with equal spacing, and the outermost circular ring constellation has 12 constellation points with equal spacing, as shown in fig. 5, r2 indicates the radius of the outermost circular ring constellation, and r1 indicates the radius of the innermost circular ring constellation. The modulation order of the 4-12APSK is 4.

As another example, the constellation shown in FIG. 6 is that of 8-8 APSK. The 8-8APSK comprises two circular ring constellations, wherein 8 constellation points which are equally spaced are arranged on the innermost circular ring constellation of the two circular ring constellations, and 8 constellation points which are equally spaced are also arranged on the outermost circular ring constellation. The modulation order of the 8-8APSK is 4.

As another example, the constellation shown in fig. 7 is a 64APSK constellation. The 64APSK comprises four circular ring constellations, and sequentially comprises 4 constellation points, 12 constellation points, 20 constellation points and 28 constellation points which are equally spaced from inside to outside, and the total number of the constellation points is 64. Wherein, the modulation order of the 64APSK is 6.

4. Non-uniform constellation

The non-uniform constellation is relative to a modulation mode that constellation points such as QAM are uniformly distributed.

As shown in fig. 8, fig. 8 is a constellation diagram of a non-uniform constellation according to an embodiment of the present application. The non-uniform constellation shown in fig. 8 is a pi/2-64-non-uniform constellation (pi/2-64-non-uniform constellation, pi/2-64-NUC), which has 64 constellation points and a modulation order of 6.

The embodiment of the application provides an information transmission method, which can determine a PTRS scaling factor corresponding to an APSK or a modulation mode of a non-uniform constellation based on indication information, so that a phase tracking reference signal can be mapped onto a constellation point of an outermost circular constellation of the APSK or a constellation point with the maximum normalized quantization power in the non-uniform constellation, thereby not only facilitating the improvement of the transmission power of the reference signal, but also improving the phase noise compensation precision of a receiving end. The embodiments disclosed in the present application are explained below with reference to the drawings.

That is, the present application is directed to a mobile communication system, such as the communication system shown in fig. 2, which may introduce modulation schemes of APSK or non-uniform constellation and PTRS scaling factors corresponding to these modulation schemes to map PTRS to APSK or non-uniform constellation. Therefore, aiming at the antenna structure in mobile communication, the method and the device can enhance the phase noise resistance of uplink transmission, avoid PRPR (pulse repetition rate) promotion and improve the phase noise compensation precision of a receiving end by utilizing PTRS (packet transport radio service).

Referring to fig. 9, fig. 9 is a schematic flowchart illustrating an information transmission method according to an embodiment of the present disclosure. The information transmission method may include, but is not limited to, the following steps:

101. the method comprises the steps that network equipment sends indication information, and terminal equipment receives the indication information sent by the network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

102. and the terminal equipment determines a PTRS scaling factor according to the indication information, wherein the PTRS scaling factor is used for determining the power for transmitting the PTRS.

In an embodiment, the indication information is used to indicate that the modulation scheme or the mapping scheme of the uplink transmission is APSK or a non-uniform constellation.

In one embodiment, the PTRS scaling factor for non-uniform constellation or APSK is predefined or configured for higher layer signaling. Therefore, after the terminal equipment receives the indication information sent by the network equipment, the PTRS scaling factor can be obtained according to the predefined content or the content configured by the high-level signaling.

In one embodiment, the predefinable or higher layer signaling is configurable:

The APSK is 4-1 of radius proportion 2/1 of a circular ring constellationAt 2APSK, the PTRS scaling factor of the APSK is

In one embodiment, the terminal device determines the PTRS scaling factor according to the indication information, and includes: the terminal equipment determines a mapping mode of uplink transmission according to the indication information; and the terminal equipment determines the PTRS scaling factor according to the mapping mode of the uplink transmission.

That is, the corresponding relationship between each indication information and each PTRS scaling factor is known to both the network device and the terminal device, and may be protocol predefined or configured by higher layer signaling. The correspondence between the respective indication information and the respective PTRS scaling factors may be one or more sets predefined by the protocol, or a subset of one set predefined by the protocol. The corresponding relationship between each indication information and each PTRS scaling factor may be expressed in the form of one or more tables, but may also be expressed in other forms.

In the embodiment of the present application, the indication information is used to indicate a modulation method adopted by uplink transmission, so as to determine a PTRS scaling factor corresponding to the modulation method. The indication information can be indicated in several ways including, but not limited to:

in the first embodiment, the indication information is a newly defined Modulation and Coding Scheme (MCS) index (index), and each MCS index may indicate a modulation scheme such as the APSK or the non-uniform constellation. Wherein the current MCS index is used to indicate the modulation order.

In the second method, the indication information is a new indication field, and the modulation method such as the APSK or the non-uniform constellation can be indicated by combining the current MCS index. For example, a plurality of modulation schemes having the same modulation order may be determined based on the MCS index, and one modulation scheme may be determined from the plurality of modulation schemes based on the indication information.

The first mode is described below with reference to tables 1 and 2, and the second mode is described below with reference to tables 3 and 4.

For example, see tables 1 and 2 below, which are provided for correspondence between various indication information and various PTRS scaling factors provided in the embodiments of the present application. In this example, the indication information may be an index of a modulation and coding scheme, table 1 is a modulation and coding scheme index table for uplink transmission, and table 2 is a correspondence table between each PTRS scaling factor and each modulation scheme. The indication information may be used to indicate I shown in the first column_MCS(ii) a The terminal equipment is based on the received I_MCSThe modulation scheme is determined from table 1, and the PTRS scaling factor is determined from table 2 based on the modulation scheme.

As shown in Table 1, the first column is the index I of the modulation and coding scheme_MCSThe second column is a modulation order Q_mAnd the third column indicates the modulation scheme. As shown in table 2, the first column is the modulation scheme; the second column is the PTRS scaling factor. In table 1 and table 2, the modulation methods are 16QAM and 4-12APSK as examples. When the modulation method is 4-12APSK as shown in fig. 5, the ratio (r2/r1) of the radii of the two circular ring constellations of APSK is different, and the corresponding PTRS scaling factors are also different. As 4-12APSK (3/1), r2/r1 is 3/1 in FIG. 5; 4-12APSK (2/1) denotes r2/r1 ═ 2/1 in fig. 5; 4-12APSK (2.5/1) indicates that r2/r1 is 2.5/1 in FIG. 5.

Table 1 index table of modulation and coding scheme for uplink transmission

Modulation coding scheme index I_MCS	Modulation order Qm	Modulation system
			0	4	4-12APSK(3/1)
1	4	4-12APSK(2/1)
			2	4	4-12APSK(2.5/1)
3	10	1024QAM

Table 2 table of correspondence between each PTRS scaling factor and each modulation mode

It can be seen that, in this embodiment, the indication information may be an index of a modulation and coding scheme, and a correspondence between the modulation scheme indicated by the indication information shown in table 1 and table 2 and the PTRS scaling factor may be configured by predefined or high-layer signaling. Alternatively, the indication information may be an index of a modulation and coding scheme, and the PTRS scaling factor of the modulation scheme indicated by the indication information shown in table 1 or table 2 may be configured by predefined or high-layer signaling. That is, in this embodiment, the determining, by the terminal device, the PTRS scaling factor according to the indication information includes: the terminal equipment determines a modulation mode according to the indication information; and the terminal equipment determines the PTRS scaling factor according to the modulation mode.

For another example, see tables 3 and 4 below, which are provided for correspondence between each piece of indication information and each PTRS scaling factor provided in the embodiments of the present application. In this example, the indication information may be a new field, such as a new field in the downlink control information. Table 3 is a modulation and coding scheme index table of the physical uplink shared channel. The difference from table 1 is that table 3 does not include the third column in table 1, i.e. table 3 does not modify the modulation and coding scheme index table of the physical uplink shared channel. Table 4 is a table of correspondence between PTRS scaling factors and modulation schemes. In comparison with table 2, table 4 adds a new column of indication information whose value range is related to the number of modulation schemes determined based on the modulation order of table 3 in table 4. For example, in table 4, the modulation orders of 4 to 12APSK are all 4, and there are three 4 to 12APSK with different radius ratios, so the value range of the indication information is 0 to 3, and the three 4 to 12APSK can be indicated respectively.

That is, in this embodiment, the determining, by the terminal device, the PTRS scaling factor according to the indication information includes: the terminal equipment determines a modulation mode according to the indication information and the index of the modulation coding mode; and the terminal equipment determines the PTRS scaling factor according to the modulation mode. The index of the modulation coding mode is used for indicating the modulation order. The terminal equipment can determine the modulation mode based on the modulation order and the indication information.

Table 3 index table of modulation and coding scheme for uplink transmission

Modulation coding scheme index I_MCS	Modulation order Qm
		0	4
1	4
		2	4
3	10

Table 4 table of correspondence between each PTRS scaling factor and each modulation scheme

For example, with I_MCSFor example, 1, the terminal device may determine that the modulation order of the uplink transmission is 4. The terminal equipment can determine the modulation mode to be 4-12APSK from the table 4 according to the modulation order. The terminal device can determine the modulation mode to be 4-12APSK (2/1) according to the indication information sent by the network device, for example, the indication information is 1, and further obtains the PTRS scaling factor corresponding to 4-12APSK (2/1) to be

The tables 1 to 4 may include, but are not limited to, the information shown in the header. The information of the header in table 1 and table 2, or the information of the header in table 3 and table 4 may be disposed in one table, or may be disposed in multiple tables as shown above, and the embodiment of the present application is not limited thereto.

For non-uniform constellations and other APSKs, the indication information and PTRS scaling factors may also be configured in a predefined or higher layer signaling manner in the manner of the above table. For example, one table is used to determine a modulation mode or a modulation order corresponding to each indication information; and the other table is used for determining the modulation modes corresponding to the modulation modes or the indication information and the corresponding PTRS scaling factors respectively.

That is, the above tables 1 to 4 may further include information such as non-uniform constellations and non-uniform constellations corresponding to indexes of modulation coding schemes, such as one or more modulation schemes shown in fig. 6 to 8, and corresponding PTRS scaling factors. The terminal can determine that the mapping mode adopted by uplink transmission is APSK or non-uniform constellation according to the indication information or the modulation order and the indication information; further, a corresponding PTRS scaling factor is determined based on APSK or the non-uniform constellation.

For example, the PTRS scaling factor corresponding to 64APSK and the PTRS scaling factor corresponding to pi/2-64-NUC may also be configured by predefined or higher layer signaling according to the embodiments shown in tables 1 to 4.

In the embodiment of the present application, the PTRS scaling factor corresponding to each modulation mode may be obtained through calculation, in addition to performing predefined or high-level signaling configuration by using the foregoing method. The following illustrates a related embodiment for calculating the PTRS scaling factor.

In another embodiment, the PTRS scaling factor corresponding to the APSK or the non-uniform constellation may be calculated based on the power normalization factor and the distance L of the APSK or the non-uniform constellation. The distance L is a distance between a constellation point in the non-uniform constellation and an origin of the non-uniform constellation, where the constellation point is a constellation point mapped by PTRS in APSK or the non-uniform constellation. For example, the distance is the distance between the origin and a constellation point with the highest normalized quantization power in the non-uniform constellation. As another example, the distance is a distance between one of the constellation points mapped by PTRS in the non-uniform constellation and the origin.

Herein, the distance L may be a euclidean distance between the above-described mapped constellation point and the origin.

In one example, the PTRS scaling factor β:

for example, 4-12APSK shown in fig. 5, assuming that PTRS maps to four constellation points whose information bits are 0000, 0001, 0011 and 0010, the distances of the four constellation points from the origin are r2, i.e., the distance L is equal to r 2. Assume a power normalization factor of 4-12APSK as shown in FIG. 5

Distance L is equal to

Then it is determined that,

for another example, in 64APSK shown in fig. 7, assuming that PTRS is mapped to four constellation points whose information bits are 000100, 010100, 100100, and 110100, the distance L is a distance from an origin of any one of the four constellation points, such as r 4. The r4 is the radius of the annular constellation of the outermost ring in the 64 APSK. Assuming the power normalization factor of 64APSK shown in fig. 7 to be a, then,

for another example, in the non-uniform constellation pi/2-64-NUC shown in fig. 8, assuming that PTRS is mapped to four constellation points with information bits of "111000", "011000", "101000", "001000", the distance L is a distance from an origin of any one of the four constellation points. Assuming the power normalization factor of pi/2-64-NUC shown in fig. 8 to be alpha, then,

optionally, the PTRS may also be mapped to four constellation points with information bits of "001000", "011000", "101000", and "111000", where normalized quantization powers of the four constellation points are also higher, which is beneficial to enhancing phase noise resistance of the PTRS.

In one embodiment, the power normalization factor of each modulation scheme is predefined or configured by higher layer signaling. For example, but not limited to, the power normalization factor corresponding to each modulation scheme may be configured by predefined or high-level signaling using the tables of the embodiments shown in table 1 to table 4. For example, the power normalization factor substituted for the second column in table 2 above. In this way, after determining the modulation mode used for uplink transmission according to the indication information, the terminal device may determine the power normalization factor corresponding to the modulation mode based on table 2, and thus may calculate the PTRS scaling factor corresponding to the modulation mode according to the power normalization factor and the calculation formula of the PTRS scaling factor.

In another embodiment, the power normalization factor of the APSK is calculated based on the radius or radius ratio of the plurality of circular ring constellations in the APSK.

For example, for 4-12APSK shown in fig. 5, assuming that the radius ratio r2/r1 of two circular ring constellations is known, the terminal device may calculate the value of each constellation point in the 4-12APSK constellation according to the number of constellation points on each circular ring constellation and the radius ratio of the two circular ring constellations. Then, the terminal device calculates the ratio of the energy sum of all constellation points to the number 16 of the constellation points by using the values of the 16 constellation points, and obtains the average power. Then the power normalization factor is equal to the square root of the average power. Therefore, the PTRS scaling factor can be obtained by using the calculation formula of the PTRS scaling factor according to the distance L and the power normalization factor.

It can be seen that, in this embodiment, the protocol may predefine or the higher layer signaling may configure the power normalization factor or the radius ratio of each APSK, so as to obtain the PTRS scaling factor.

In another embodiment, the power normalization factor for APSK may be calculated based on the constellation distribution of APSK. The constellation distribution of APSK is used to calculate the value of each constellation point. That is, the terminal device may calculate a value for each constellation point based on the constellation distribution of APSK.

For example, taking 4-12APSK shown in fig. 5 as an example, the innermost circular ring constellation has four constellation points, and the values of the four constellation points are respectively denoted as S¹ ₀，S¹ ₁，S¹ ₂，S¹ ₃：

S¹ ₀＝r1*e^{(j*π*((0)+0.5)/2)}；

S¹ ₁＝r1*e^{(j*π*((1)+0.5)/2)}；

S¹ ₂＝r1*e^{(j*π*((2)+0.5)/2)}；

S¹ ₃＝r1*e^{(j*π*((3)+0.5)/2)}；

There are twelve constellation points on the outmost circular constellation, and the values of the twelve constellation points are respectively marked as S² ₀，S² ₁，…，S² ₁₁：

S¹ ₀＝r2*e^{(j*π*((0)+0.5)/6)}；

S² ₁＝r2*e^{(j*π*((1)+0.5)/6)}；

...

S² ₁₁＝r2*e^{(j*π*((11)+0.5)/6)}；

Then, the power normalization factor α:

For example, the value of each constellation point in the non-uniform constellation shown in FIG. 8

The following constellation distribution calculation can be used:

then, substituting the information bits of each constellation point in the non-uniform constellation shown in fig. 8 into the above formula (3), the value of each constellation point can be obtained. And the terminal equipment calculates the energy sum of all the constellation points based on the value of each constellation point. The terminal device calculates the ratio of the energy sum to the number 64 of constellation points to obtain the average power. The power normalization factor for the non-uniform constellation shown in fig. 8 is the square root of the average power. That is, for the non-uniform constellation shown in fig. 8, the values of all constellation points can be obtained based on equation (3); then, the values of all constellation points are substituted into the formula (4), so as to obtain the power normalization factor α of the non-uniform constellation shown in fig. 8, for example, the power normalization factor α of the non-uniform constellation shown in fig. 8 is obtained by calculation and is equal to 1.

Further, assuming that PTRS needs to be mapped to four constellation points "111000", "011000", "101000" and "001000" in the non-uniform constellation shown in fig. 8, the six information bits represented by one of the constellation points are input into the above equation (3), and then:

wherein a is the real part of the value of the constellation point, and b is the imaginary part of the value of the constellation point;

then, the distance L between the constellation point and the origin:

in this way, the terminal device may calculate the PTRS scaling factor of the non-uniform constellation based on the calculated power normalization factor and the distance L.

In one embodiment, the radii or ratio of radii of the plurality of circular ring constellations of APSK may be predefined or calculated based on the values of the constellation points on each circular ring constellation. The value of each constellation point may be calculated based on the constellation distribution of the APSK, as described in equation (3) above.

In another embodiment, the power normalization factor for APSK or non-uniform constellations may be predefined or may be determined based on the constellation distribution. For example, the terminal device calculates the power normalization factor using the above equation (2).

In yet another embodiment, the PTRS scaling factor for APSK or non-uniform constellation may be predefined or may be determined based on constellation distribution. For example, the terminal device calculates the power normalization factor and the distance L by using the above formulas (2) and (5), and further calculates the PTRS scaling factor by using the formulas.

Therefore, in the embodiment of the present application, the terminal device may determine, according to the indication information, that the modulation mode adopted for uplink transmission is APSK or a non-uniform constellation, and may further send the PTRS based on the PTRS scaling factors corresponding to the modulation modes. Therefore, the embodiment of the application can adopt an APSK or non-uniform constellation mapping mode to transmit the PTRS and the data, and is beneficial to improving the phase noise resistance of the signal and reducing the PAPR of the signal compared with the mapping mode adopting QAM.

Referring to fig. 10, fig. 10 is a schematic flowchart illustrating another information transmission method according to an embodiment of the present application. As shown in fig. 10, compared with the information transmission method shown in fig. 9, the information transmission method may further perform power boosting by using a PTRS scaling factor after performing phase rotation on the modulation symbol mapped by the PTRS. For example, but not limited to, the information transmission method shown in fig. 10 includes:

201. the method comprises the steps that network equipment sends indication information, and terminal equipment receives the indication information sent by the network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

202. the terminal equipment determines a PTRS scaling factor according to the indication information, wherein the PTRS scaling factor is used for determining the power for sending the PTRS;

203. the terminal device determines a phase rotation factor according to the indication information, and the phase rotation factor is used for determining a rotation phase for transmitting the PTRS.

In a possible implementation manner, a terminal device sends a PTRS by using a modulation scheme APSK and a PTRS scaling factor of uplink transmission, including: the terminal equipment modulates the PTRS sequence to four constellation points on the innermost circle constellation in the APSK to obtain a first modulation symbol sequence; wherein, the four constellation points on the innermost annular constellation can be part or all of the constellation points on the innermost annular constellation and have equal phase difference. And the terminal equipment utilizes the PTRS scaling factor to carry out power boost on the first modulation symbol sequence, maps the first modulation symbol sequence to four constellation points on the outermost circular constellation in the APSK, and obtains and sends a second modulation symbol sequence.

When the phases of the four constellation points mapped on the innermost annular constellation by the PTRS and the four constellation points mapped on the outermost annular constellation by the PTRS are not equal, the four constellation points on the innermost annular constellation are subjected to phase rotation based on the phase rotation factor, and then power is boosted by using the PTRS scaling factor to be mapped to the four constellation points on the outermost annular constellation.

In a possible implementation manner, a terminal device sends a PTRS by using a non-uniform constellation of a modulation scheme of uplink transmission and a PTRS scaling factor, including: the terminal equipment modulates the PTRS sequence into a non-uniform constellation, such as pi/2-64-NUC shown in figure 8, and obtains a first modulation symbol sequence on four constellation points with the minimum amplitude; and the terminal equipment utilizes the PTRS scaling factor to carry out power boost on the first modulation symbol sequence, maps the first modulation symbol sequence to four constellation points with the maximum amplitude in the non-uniform constellation, and obtains and sends a second modulation symbol sequence.

When the PTRS mapping is performed between the four constellation points with the minimum amplitude and the four constellation points with the maximum amplitude, the PTRS scaling factor is used to perform power boosting after performing phase rotation on the four constellation points with the minimum amplitude based on the phase rotation factor, and the PTRS mapping is performed on the four constellation points with the maximum amplitude.

In another embodiment, in the APSK or non-uniform constellation, after power boosting is performed on the PTRS by using the PTRS scaling factor, the PTRS may perform phase rotation based on the phase rotation factor to map to a constellation point with a larger amplitude, so as to resist phase noise. That is, before or after the power boosting of the constellation point with smaller amplitude mapped by PTRS in each APSK or non-uniform constellation by the PTRS scaling factor, the phase rotation can be performed based on the phase rotation factor.

In the above embodiments or implementations, the first modulation symbol sequence may be modulated based on a QPSK constellation. And then mapping the first modulation symbol sequence to four constellation points with the maximum amplitude in the APSK or the non-uniform constellation respectively based on the PTRS scaling factor or the PTRS scaling factor and the phase rotation factor. Among them, APSK or four constellation points with the maximum amplitude in the non-uniform constellation may also be four constellation points with the highest normalized quantization power.

In one possible design, the first modulation symbol sequence is mapped to the four constellation points with the largest amplitude in the APSK or non-uniform constellation, respectively, may have equal phase differences. This design may further improve the phase noise immunity of the PTRS.

For example, as shown in fig. 11, fig. 11 is another constellation diagram of 4-12 APSK. In fig. 4, the phases of the inner and outer ring constellation points are not consistent, and when the terminal device transmits the PTRS, it needs to perform phase rotation in addition to power boosting based on the PTRS scaling factor, as described above, the phase rotation factor may be configured by the network device, or may be predefined, as shown in fig. 11, the constellation point of the information bit 1100 needs to perform phase rotation of ± 1/12 pi or ± 1/4 pi, and then is mapped to the outermost ring constellation point. I.e., the rotational phase determined based on the phase rotation factor is equal to either 1/12 pi or 1/4 pi.

In one embodiment, the phase rotation factor is determined based on further indication information, which is sent by the network device to the terminal device.

In another embodiment, the terminal device may further determine the phase rotation factor according to the indication information. The phase rotation factor is either predefined or configured by higher layer signaling. The tables shown in tables 2 and 4 above may also include a list of phase rotation factors. So that the terminal device can know the phase rotation factor based on the indication information and the above table.

Referring to fig. 12, fig. 12 is a schematic flowchart illustrating an information transmission method according to an embodiment of the present disclosure. As shown in fig. 12, the information transmission method may include, but is not limited to, the following steps:

301. the method comprises the steps that the network equipment sends indication information, the terminal equipment can receive the indication information sent by the network equipment, and the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

302. and the terminal equipment determines a placeholder according to the indication information, wherein the placeholder is used for mapping the encoded UCI or PTRS bit to the APSK or the non-uniform constellation.

In an alternative embodiment, the placeholder is used to map the encoded UCI bits to constellation points on the outermost circular constellation of APSK, or to map the encoded UCI bits to constellation points with the largest euclidean distance in a non-uniform constellation.

Wherein, a placeholder is added after (or low bit) the coded UCI bit, or the placeholder is added before (or high bit) the coded UCI bit.

In another alternative embodiment, the placeholders are used to map the encoded PTRS bits onto APSK or non-uniform constellations. One possible implementation of this embodiment is: the terminal equipment modulates the PTRS sequence by adopting a modulation mode with a modulation order of 2, such as QPSK, and then obtains a first modulation symbol sequence; and the terminal equipment adds a placeholder behind each modulation symbol in the first modulation symbol sequence so as to map the placeholder to the constellation point with the maximum Euclidean distance in the APSK or the non-uniform constellation.

In an alternative design, the coded UCI or PTRS bits may be mapped to constellation points with maximum euclidean distance and equal phase difference in APSK or non-uniform constellation based on the placeholders. The design may further improve the phase noise resistance of the UCI or PTRS.

For example, assuming that the placeholder is xx, the coded UCI bit or PTRS bit is C0, C1, and bit C2 is additionally introduced to improve transmission reliability, C2 is equal to (C0+ C1) mod2, then the constellation points mapped to APSK are: xxC0C1, xxC2C0, xxC1C2, xxC2C 1; alternatively, C0C1xx, C2C0xx, C1C2xx, C2C1 xx.

Assuming that for 4-12APSK shown in fig. 5, the placeholder xx is 00, and the coded UCI bits are 0 and 1, the additionally introduced C2 is equal to 1, and the constellation points mapped to APSK are: 0001. 0010, 0011, 0010, i.e. four constellation points as marked by the box in fig. 5.

Assume that for pi/2-64-NUC shown in fig. 8, the modulation symbols obtained after QPSK modulation is performed on a PTRS sequence are 00, 01, 10, and 11, respectively; the placeholder is 1000; then, placeholders are added after each modulation symbol in the first modulation symbol sequence to obtain "001000", "011000", "101000", "111000", which can be mapped to the four constellation points identified by the box shown in fig. 8.

In one embodiment, the placeholder is predefined or higher layer signaling configured. For example, the protocol may predefine or higher layer signaling may configure placeholders for each APSK or non-uniform constellation. Thus, the terminal device can determine the placeholder according to the indication information.

For example, the correspondence between the indication information and the placeholder may refer to the correspondence between the indication information and the PTRS scaling factor, that is, be represented in a table manner. That is, the protocol may be predefined or the high-level signaling may configure the following table, and the terminal device may determine, according to the indication information, that the modulation mode adopted by the uplink transmission is APSK or a non-uniform constellation; the placeholders may then be determined from a table such as that shown in table 5 based on the modulation scheme. The placeholders corresponding to the modulation schemes shown in table 5 include, but are not limited to, the placeholders shown in table 5. For example, for 64APSK or π/2-64-NUC, the placeholders may be the last four bits in c1c2xxxx, and c1c2 is the encoded information bit.

TABLE 5 correspondence between modulation schemes and placeholders

Modulation system	Placeholder
		4-12APSK(3/1)	00
64APSK	0100
		π/2-64-NUC	0100

It can be seen that, in the embodiment of the present application, the information transmission method can map the encoded information bits to the constellation point with the maximum euclidean distance, and the terminal device can map the encoded UCI bits or the encoded PTRS bits to the APSK or the non-uniform constellation based on the placeholder, so as to enhance the resistance of the phase noise and improve the reliability of the UCI or the PTRS.

Corresponding to the method provided by the above method embodiment, the embodiment of the present application further provides a corresponding communication device, where the communication device includes a module for executing the above embodiment. The module may be software, hardware, or a combination of software and hardware.

Fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus 1300 shown in fig. 13 may include a transceiving unit 1301 and a processing unit 1302. The transceiving unit 1301 may include a transmitting unit and a receiving unit, where the transmitting unit is configured to implement a transmitting function, the receiving unit is configured to implement a receiving function, and the transceiving unit 1301 may implement a transmitting function and/or a receiving function. The transceiving unit may also be described as a communication unit.

Communication apparatus 1300 may be a terminal device, an apparatus in a terminal device, or an apparatus that can be used in cooperation with a terminal device.

In a possible design, the transceiver 1301 is configured to receive indication information sent by a network device, where the indication information is used to indicate that a modulation mode of uplink transmission is amplitude phase shift keying APSK or a non-uniform constellation; a processing unit 1302, configured to determine a PTRS scaling factor according to the indication information, where the PTRS scaling factor is used to determine a power for transmitting the PTRS.

Optionally, the processing unit 1302 is configured to determine a PTRS scaling factor according to the indication information, where the PTRS scaling factor is used to determine power for sending the PTRS.

In one possible design, the correspondence between the modulation mode and the PTRS scaling factor or the phase rotation factor may be referred to in the description of the method embodiments.

In another possible design, the PTRS scaling factor corresponding to the modulation scheme is obtained by calculation.

For example, the PTRS scaling factor of the APSK or the non-uniform constellation is calculated based on a power normalization factor and a distance L of the APSK or the non-uniform constellation; the distance L is a distance between a constellation point and an origin point in the APSK or the non-uniform constellation; the constellation point is a constellation point to which the PTRS is mapped in the APSK or the non-uniform constellation.

As another example, the APSK or power normalization factor of the non-uniform constellation is predefined; or the power normalization factor of the APSK is obtained by calculation based on the radius or the radius ratio of a plurality of circular ring constellations in the APSK; the power normalization factor of the non-uniform constellation is obtained through calculation based on the energy sum of the constellation points in the non-uniform constellation and the number of the constellation points.

As another example, a PTRS scaling factor, a power normalization factor, or a radius or radius ratio of a plurality of circular ring constellations of the APSK is determined based on a predefined constellation distribution of the APSK; the PTRS scaling factor or power normalization factor of the non-uniform constellation is determined based on a predefined constellation distribution of the non-uniform constellation.

In yet another possible design, the processing unit 1302 is further configured to determine a phase rotation factor according to the indication information, where the phase rotation factor is used to determine a rotation phase for transmitting the PTRS.

Wherein the phase rotation factor is predefined or configured by higher layer signaling. For example, the phase rotation factor corresponding to each modulation scheme is configured by predefined or by higher layer signaling.

The communication apparatus 1300 may be a network device, an apparatus in a network device, or an apparatus capable of being used in cooperation with a network device.

In one design, the processing unit 1302 is configured to determine that a constellation used for uplink transmission is APSK or a non-uniform constellation; the transceiving unit 1301 is configured to send indication information to a terminal device, where the indication information is used to indicate that a modulation mode of uplink transmission is amplitude phase shift keying APSK or a non-uniform constellation. Therefore, the terminal equipment can determine the PTRS scaling factor of the phase tracking reference signal according to the indication information so as to determine the power for transmitting the PTRS.

The corresponding relationship between each modulation mode and each PTRS scaling factor, or the calculation method of each PTRS scaling factor corresponding to each modulation mode may refer to the relevant contents of the above method embodiments. And will not be described in detail herein.

Fig. 14 shows a schematic structural diagram of a communication apparatus. The communication apparatus 1400 may be a network device, a terminal device, a chip system, a processor, or the like supporting the network device to implement the method described above, or a chip, a chip system, a processor, or the like supporting the terminal device to implement the method described above. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.

The communications device 1400 may include one or more processors 1401. The processor 1401 may be a general purpose processor, a special purpose processor, or the like. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a terminal chip, a DU or CU, etc.), execute a software program, and process data of the software program.

Optionally, the communications apparatus 1400 may include one or more memories 1402 on which instructions 1404 may be stored, the instructions being executable on the processor 1401 to cause the apparatus 1400 to perform the methods described in the method embodiments above. Optionally, the memory 1402 may further store data therein. The processor 1401 and the memory 1402 may be provided separately or integrated together.

Optionally, the communication device 1400 may further include a transceiver 1405 and an antenna 1406. The transceiver 1405 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc. for implementing a transceiving function. The transceiver 1405 may include a receiver and a transmitter, and the receiver may be referred to as a receiver or a receiving circuit, etc. for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmission circuit, etc. for implementing the transmission function.

The communication device 1400 is a terminal device: processor 1401 is configured to perform step 102 in fig. 9; steps 202, 203 in fig. 10 are performed. The transceiver 1405 is used to perform step 101 in fig. 9; step 201 in fig. 10 is performed; step 301 in fig. 12 is performed.

The communication device 1400 is a network device: the processor 1401 is configured to determine that a modulation scheme adopted by uplink transmission is APSK or a non-uniform constellation; further, the transceiver 1405 is configured to perform step 101 in fig. 9; step 201 in fig. 10 is performed; step 301 in fig. 12 is performed.

In another possible design, a transceiver to perform receive and transmit functions may be included in processor 1401. The transceiver may be, for example, a transceiver circuit, or an interface circuit. The transmit and receive circuitry, interfaces or interface circuitry used to implement the receive and transmit functions may be separate or integrated. The transceiver circuit, the interface circuit or the interface circuit may be used for reading and writing code/data, or the transceiver circuit, the interface circuit or the interface circuit may be used for transmitting or transferring signals.

In yet another possible design, the processor 1401 may optionally be provided with instructions 1403, and the instructions 1403, when executed on the processor 1401, may cause the communication apparatus 1400 to perform the method described in the above method embodiment. The instructions 1403 may be solidified in the processor 1401, in which case the processor 1401 may be implemented in hardware.

In yet another possible design, the communication device 1400 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various IC process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), Bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

The communication apparatus in the above description of the embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 14. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication means may be:

(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;

(2) a set of one or more ICs, which optionally may also include storage components for storing data, instructions;

(3) an ASIC, such as a modem (MSM);

(4) a module that may be embedded within other devices;

(5) receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, and the like;

(6) others, and so forth.

For the case that the communication device may be a chip or a system of chips, see the schematic structural diagram of the chip shown in fig. 15. The chip 1500 shown in fig. 15 comprises a processor 1501 and an interface 1502. The number of the processors 1501 may be one or more, and the number of the interfaces 1502 may be more.

For the case that the chip is used for realizing the functions of the terminal device in the embodiment of the present application: the interface 1502 is configured to receive indication information sent by a network device, where the indication information is used to indicate that a modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation; processor 1501 is configured to determine a PTRS scaling factor based on the indication information, the PTRS scaling factor being used to determine a power at which to transmit the PTRS.

For the case that the chip is used to implement the functions of the network device in the embodiment of the present application: the processor 1501 is configured to determine that the modulation mode of the uplink transmission is amplitude phase shift keying APSK or a non-uniform constellation; the interface 1502 is configured to send indication information, where the indication information is used to indicate that the modulation scheme of uplink transmission is amplitude phase shift keying APSK or a non-uniform constellation.

Optionally, the chip further comprises a memory 1503, the memory 1503 being used for storing necessary program instructions and data of the terminal device.

Fig. 16 provides a schematic structural diagram of a terminal device. For convenience of explanation, fig. 16 shows only main components of the terminal device. As shown in fig. 16, the terminal apparatus 1000 includes a processor 1602, a memory, a control circuit 1601, an antenna, and an input-output device. The processor 1602 is mainly used for processing a communication protocol and communication data, controlling the whole terminal, executing a software program, and processing data of the software program. The memory is used primarily for storing software programs and data. The control circuit 1601 may include a radio frequency circuit, which is mainly used for conversion between baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is powered on, the processor 1602 may read the software program in the storage unit, analyze and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1602 performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives a radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, the baseband signal is output to the processor, and the processor converts the baseband signal into the data and processes the data.

For ease of illustration, fig. 16 shows only one memory and processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor in fig. 16 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a computer, implements the functionality of any of the above-described method embodiments.

The present application also provides a computer program product which, when executed by a computer, implements the functionality of any of the above-described method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence.

The correspondence shown in the tables in the present application may be configured or predefined. The values of the information in each table are only examples, and may be configured to other values, which is not limited in the present application. When the correspondence between the information and each parameter is configured, it is not always necessary to configure all the correspondences indicated in each table. For example, in the table in the present application, the correspondence shown in some rows may not be configured. For another example, appropriate modification adjustments, such as splitting, merging, etc., can be made based on the above tables. The names of the parameters in the tables may be other names understandable by the communication device, and the values or the expression of the parameters may be other values or expressions understandable by the communication device. When the above tables are implemented, other data structures may be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables may be used.

Predefinition in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An information transmission method, comprising:

the method comprises the steps that terminal equipment receives indication information sent by network equipment, wherein the indication information is used for indicating that the modulation mode of uplink transmission is Amplitude Phase Shift Keying (APSK) or a non-uniform constellation;

and the terminal equipment determines a Phase Tracking Reference Signal (PTRS) scaling factor according to the indication information, wherein the PTRS scaling factor is used for determining the power for sending the PTRS.

2. The method of claim 1, further comprising:

and the terminal equipment determines a phase rotation factor according to the indication information, wherein the phase rotation factor is used for determining a rotation phase for sending the PTRS.

3. The method according to claim 1 or 2,

the APSK or PTRS scaling factor corresponding to the non-uniform constellation is predefined or configured by high-layer signaling;

alternatively, the APSK or the corresponding phase rotation factor of the non-uniform constellation is predefined or configured by higher layer signaling.

4. The method according to any one of claims 1 to 3,

the APSK is a circular ring constellationIs 4-12APSK of radius proportion 3/1, the PTRS scaling factor of the APSK is

5. The method according to any one of claims 1 to 4,

the PTRS scaling factor of the APSK or the non-uniform constellation is obtained by calculation based on the power normalization factor and the distance L of the APSK or the non-uniform constellation;

the distance L is a distance between a constellation point and an origin point in the APSK or the non-uniform constellation;

the constellation point is a constellation point to which the PTRS is mapped in the APSK or the non-uniform constellation.

6. The method of claim 5,

the APSK or a power normalization factor of the non-uniform constellation is predefined; alternatively, the first and second electrodes may be,

the power normalization factor of the APSK is obtained by calculation based on the radius or radius ratio of a plurality of circular ring constellations in the APSK; the power normalization factor of the non-uniform constellation is obtained through calculation based on the energy sum of the constellation points in the non-uniform constellation and the number of the constellation points.

7. The method according to any of claims 1 to 6, wherein the PTRS scaling factor, power normalization factor or radius ratio of multiple circular ring constellations of the APSK is determined based on a predefined constellation distribution of the APSK;

the PTRS scaling factor or power normalization factor of the non-uniform constellation is determined based on a predefined constellation distribution of the non-uniform constellation.

8. A communications apparatus, comprising:

and the processing unit is used for determining a Phase Tracking Reference Signal (PTRS) scaling factor according to the indication information, wherein the PTRS scaling factor is used for determining the power for transmitting the PTRS.

9. The apparatus of claim 8,

the processing unit is further configured to determine a phase rotation factor according to the indication information, where the phase rotation factor is used to determine a rotation phase for transmitting the PTRS.

10. The apparatus according to claim 8 or 9,

11. The apparatus according to any one of claims 8 to 10,

12. The apparatus according to any one of claims 9 to 11,

13. The apparatus of claim 12,

14. The apparatus according to any of claims 9 to 13, wherein the PTRS scaling factor, power normalization factor or radius ratio of multiple circular ring constellations of the APSK is determined based on a predefined constellation distribution of the APSK;

15. A communications apparatus, comprising: a processor, the method of any one of claims 1 to 7 being performed when the processor invokes a computer program in memory.

16. A communications apparatus, comprising: a memory and a processor; the memory for storing a computer program, the communication device performing the method of any one of claims 1 to 7 when the processor invokes the computer program in the memory.

17. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 7.