CN115714703A

CN115714703A - Communication method and communication device

Info

Publication number: CN115714703A
Application number: CN202110969071.2A
Authority: CN
Inventors: 胡丹; 张旭
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2023-02-24
Also published as: WO2023025082A1

Abstract

The embodiment of the application discloses a communication method and a communication device, which are used for carrying out signal processing on an uplink signal. In the method, first information is subjected to signal processing to obtain processed first information, the signal processing comprises pi/2 BPSK modulation, layer mapping, discrete Fourier Transform (DFT) precoding, precoding and OFDM waveform generation, and finally the processed first information is sent to network equipment, and two modulation symbols are mapped on different transmission layers through the layer mapping to improve the transmission rate.

Description

Communication method and communication device

Technical Field

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

Background

For new radio access technology (NR), the transmission of its uplink signal supports pi/2 Binary Phase Shift Keying (BPSK) modulation. The uplink signal is processed through pi/2 BPSK modulation, multiple modulation symbols can be obtained, wherein the phase difference between any two adjacent modulation symbols is 90 °, and therefore a low peak-to-average ratio (PAPR) is guaranteed after a channel processing procedure. However, currently only single-layer transmission is supported based on pi/2 BPSK modulation, and the transmission rate is limited.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which are used for carrying out signal processing on an uplink signal.

In the method, first, signal processing is performed on first information to obtain processed first information, the signal processing includes pi/2 BPSK modulation, layer mapping, discrete Fourier Transform (DFT) precoding, and OFDM waveform generation, and finally, the processed first information is sent to a network device, and two modulation symbols are mapped on different transmission layers through the layer mapping, so that the transmission rate is improved.

In some possible implementations, the pi/2 BPSK modulation includes: carrying out the pi/2 BPSK modulation on the first information to obtain modulated first information, wherein the number of transmission layers is greater than or equal to 2; the layer mapping includes: performing the layer mapping on the modulated first information to obtain layer-mapped first information; the DFT precoding comprises: performing the DFT precoding on the first information after the layer mapping to obtain first information after DFT precoding; the pre-coding includes: performing the pre-coding on the DFT pre-coded first information to obtain pre-coded first information; the OFDM waveform generation includes: the pre-coded first information is subjected to OFDM waveform generation to obtain first information of a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform; the sending the processed first information to the network device includes: and sending the first information of the DFT-s-OFDM waveform to the network equipment, so that the low PAPR characteristic of pi/2 BPSK modulation is ensured under the condition of ensuring higher transmission rate.

In some feasible implementation manners, the number of transmission layers is 2, and the performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: mapping 4 continuous modulation symbols corresponding to bits in the modulated first information into 2 transmission layers respectively to obtain the layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the 4 continuous modulation symbols are sequentially mapped into the 1 st layer of the 2 transmission layers, and the 4 th modulation symbol and the 3 rd modulation symbol in the 4 modulation symbols are sequentially mapped into the 2 nd layer of the 2 transmission layers, so that the phase difference between any two adjacent modulation symbols in any one transmission layer is equal to 90 °, the phase difference between the modulation symbols mapped at corresponding positions on multiple transmission layers is equal to 90 °, and the low PAPR characteristic of the pi/2 BPSK modulation is ensured under the condition of ensuring a high transmission rate.

In some feasible implementation manners, the number of transmission layers is 2, and the performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: respectively mapping 4 continuous modulation symbols corresponding to bits in the modulated first information into 2 transmission layers to obtain the layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the 4 modulation symbols are sequentially mapped into the 1 st layer of the 2 transmission layers, and the 3 rd modulation symbol and the 4 th modulation symbol in the 4 modulation symbols are sequentially mapped into the 2 nd layer of the 2 transmission layers, so that the phase difference between any two adjacent modulation symbols in any one transmission layer is equal to 90 °, the phase difference between the modulation symbols mapped at corresponding positions on a plurality of transmission layers is equal to 90 °, and the low PAPR characteristic of pi/2 BPSK modulation is ensured under the condition of ensuring a high transmission rate.

In some possible implementations, the pre-coded information includes at least one of:

or

or

Then, after precoding, the low PAPR characteristic of pi/2 BPSK modulation is also guaranteed under the condition that a higher transmission rate is guaranteed.

In some feasible implementation manners, the number of transmission layers is 4, and the performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: processing 2 modulation symbols in 4 continuous modulation symbols corresponding to bits in the modulated first information, and rotating the corresponding phases by 45 degrees or-45 degrees to obtain unprocessed 2 modulation symbols and processed 2 modulation symbols; mapping 1 modulation symbol in the unprocessed 2 modulation symbols and 1 modulation symbol in the processed 2 modulation symbols to any layer of the 4 transmission layers to obtain the layer-mapped first information, so that the phase difference between any two adjacent modulation symbols in any transmission layer is equal to 45 °, 90 ° or 135 °, and the phase difference between the modulation symbols mapped to corresponding positions on the multiple transmission layers is equal to 45 °, 90 ° or 135 °, thereby ensuring the low PAPR characteristic of pi/2 BPSK modulation under the condition of ensuring a high transmission rate.

In some possible implementations, the precoded information includes at least one of:

or

In some feasible implementation manners, the number of transmission layers is 3, and the performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: processing 2 modulation symbols in 4 continuous modulation symbols corresponding to bits in the modulated first information, and rotating the corresponding phases by 45 degrees or-45 degrees to obtain unprocessed 2 modulation symbols and processed 2 modulation symbols; mapping the unprocessed 2 modulation symbols and any 3 modulation symbols of the processed 2 modulation symbols to any layer of the 3 transmission layers to obtain the layer-mapped first information, so that the phase difference between any two adjacent modulation symbols in any one transmission layer is equal to 45 °, 90 ° or 135 °, and the phase difference between the modulation symbols mapped to corresponding positions on the multiple transmission layers is equal to 45 °, 90 ° or 135 °, thereby ensuring the low PAPR characteristic of pi/2 BPSK modulation under the condition of ensuring a high transmission rate.

or

A second aspect of the present application provides a communication device for performing the method of any of the preceding first aspects.

In a third aspect, the present application provides a computer-readable storage medium having stored therein instructions, which when executed on a computer, cause the computer to perform the method of any one of the first or second aspects described above.

A fourth aspect of the present application provides a computer program product comprising computer executable instructions stored in a computer readable storage medium; the computer executable instructions may be read by at least one processor of the device from a computer readable storage medium, the execution of which by the at least one processor causes the device to carry out the method provided by the first aspect or any one of the possible implementations of the first aspect described above.

A fifth aspect of the present application provides a communication device that may include at least one processor, a memory, and a communication interface. At least one processor is coupled with the memory and the communication interface. The memory is configured to store instructions, the at least one processor is configured to execute the instructions, and the communication interface is configured to communicate with other communication devices under control of the at least one processor. The instructions, when executed by at least one processor, cause the at least one processor to perform the method of the first aspect or any possible implementation of the first aspect.

A sixth aspect of the present application provides a chip system, which includes a processor and is configured to enable a communication apparatus to implement the functions recited in the first aspect or any one of the possible implementation manners of the first aspect.

In one possible design, the system-on-chip may further include a memory, the memory being configured to hold program instructions and data necessary for the communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

For technical effects brought by any one of the possible implementation manners of the third aspect to the sixth aspect, reference may be made to technical effects brought by different possible implementation manners of the first aspect or the first aspect, and details are not described here.

Drawings

FIG. 1-1 is a block diagram of a mobile communication system according to the present application;

fig. 1-2 are schematic diagrams of another architecture of a mobile communication system provided herein;

FIG. 2-1 is a schematic diagram of an embodiment of a communication method provided in the present application;

fig. 2-2 is a schematic diagram of a mapping relationship between modulation symbols and corresponding phases in the present application;

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

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

Detailed Description

Embodiments of the present application are described below with reference to the accompanying drawings. The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely descriptive of the manner in which objects of the same nature are distinguished in the embodiments of the application. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the embodiment of the present application may be applied to various communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. The term "system" may be used interchangeably with "network". CDMA systems may implement wireless technologies such as universal radio terrestrial access (UTRA), CDMA2000, and the like. UTRA may include Wideband CDMA (WCDMA) technology and other CDMA variant technologies. CDMA2000 may cover the Interim Standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards. TDMA systems may implement wireless technologies such as global system for mobile communications (GSM). The OFDMA system may implement wireless technologies such as evolved universal radio terrestrial access (E-UTRA), ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash OFDMA, and the like. UTRA and E-UTRA are UMTS as well as UMTS evolved versions. Various versions of 3GPP are new versions of UMTS using E-UTRA in Long Term Evolution (LTE) and LTE-based evolution. The technical solution of the embodiment of the present application may also be applied to a New Radio (NR) system in a fifth generation (5 th generation,5 g) mobile communication system of a Long Term Evolution (LTE) system, a future mobile communication system, and the like.

The system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Fig. 1-1 is a schematic diagram of an architecture of a mobile communication system applied to an embodiment of the present application. The mobile communication system 100 includes a core network device 110, a radio access network device 120, and at least one terminal device (e.g., terminal device 130 and terminal device 140 in fig. 1-1). The terminal equipment is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network equipment in a wireless or wired mode. Or the mobile communication system comprises a core network device, at least two radio access network devices and at least one terminal device, as shown in fig. 1-2.

The terminal device in the embodiment of the present application may be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with 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 surgery (remote medical supply), 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), and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

The radio access network device in the embodiment of the present application is an access device in which a terminal device accesses to the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved NodeB (eNB), a Transmission Reception Point (TRP), a next generation base station (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, and the like. The embodiments of the present application do not limit the specific technologies and the specific device forms adopted by the radio access network device.

The core network device and the radio access network device may be separate physical devices, or the function of the core network device and the logical function of the radio access network device may be integrated on the same physical device, or a physical device may be integrated with a part of the function of the core network device and a part of the function of the radio access network device. The terminal equipment may be fixed or mobile. It should be noted that the core network device, the radio access network device and the terminal device may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, drones, balloons, and satellites. The embodiment of the application does not limit the application scenarios of the network device and the terminal device. In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. The embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided in the embodiment of the present application, as long as the communication can be performed according to the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, for example, the execution main body of the method provided in the embodiment of the present application may be a radio access network device or a terminal device, or a functional module capable of calling the program and executing the program in the terminal device or the access network device.

It should be noted that fig. 1-1 and fig. 1-2 are only schematic diagrams, and the communication system may further include other network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in fig. 1-1 and fig. 1-2. The embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminal devices included in the mobile communication system.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., compact Disk (CD), digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

In the present application, a PUSCH may be used as an uplink data channel and a downlink shared channel (PDSCH) may be used as a downlink data channel, or a PUCCH may be used as an uplink control channel and a Physical Downlink Control Channel (PDCCH) may be used as a downlink control channel, which are described as an example, but specific names of the uplink data channel, the downlink data channel, the uplink control channel, and the downlink control channel are not limited in the present application, and may be different names in different systems.

When the terminal device or the wireless access device transmits a signal through an uplink channel, the flow of channel processing includes, but is not limited to, modulation, layer mapping, precoding, and waveform generation. Among them, new radio access technology (NR), whose uplink transmission supports pi/2 BPSK modulation:

where b (i) is information to be modulated (e.g., a codeword), b (i) =0 or 1,i is an index of a network (or a cell), j is an imaginary symbol, and d (i) is a modulation symbol that is pi/2 BPSK-modulated on b (i). Illustratively, if i is even (then i +1 is odd), and b (i) = b (i + 1) =0, then

I.e. its phase is 45,

i.e. its phase is 135 °; if i is even (i +1 is odd), b (i) = b (i + 1) =1, then

I.e. its phase is 225 deg. (or-135 deg.),

i.e., its phase is 315 deg. (or-45 deg.).

It can be seen that the phase difference between any two adjacent modulation symbols d (i) and d (i + 1) is 90 °, so as to ensure a low peak-to-average ratio (PAPR) after passing through the channel processing procedure. If i is an odd number, i +1 is an even number, which is similar to the above case and will not be described herein.

To increase the transmission rate, it is necessary to enable pi/2 BPSK modulation to support transmission of multiple transmission layers. Taking a 2-layer transmission layer as an example, two adjacent modulation symbols will be mapped on different layers: x is the number of ⁽⁰⁾ (i)＝d(2i)、x ⁽¹⁾ (i) = d (2i + 1). Wherein d (2 i) and d (2i + 1) represent two consecutive modulation symbols, x ⁽⁰⁾ (i) Representing modulation symbols, x, mapped onto the first transport layer ⁽¹⁾ (i) Indicating modulation symbols mapped onto the second transport layer. Then, x ⁽⁰⁾ (i+1)＝d(2(i+1))＝d(2i+2)、 x ⁽¹⁾ (i + 1) = d (2 (i + 1) + 1) = d (2i + 3). According to

The phase of d (2 i) is 45 ° or-135 °, the phase of d (2i + 2) is also 45 ° or-135 °, then the phase difference of d (2 i) and d (2i + 2) is 0 ° or 180 °, resulting in x in the same transmission layer ⁽⁰⁾ (i) And x ⁽⁰⁾ The phase difference between (i + 1) is 0 ° or 180 °, the low PAPR characteristic of the pi/2 BPSK modulation cannot be guaranteed.

Therefore, when pi/2 BPSK is currently used to modulate the uplink signal, the transmission cannot be performed using multiple transmission layers, so that the transmission rate is limited. Therefore, a communication method and a communication device provided in the embodiments of the present application are used for performing signal processing on an uplink signal.

The communication system 100 provided in the present application is described above, and a communication method performed based on the communication system 100 is described next. When the method is described below, the execution subject may be a terminal device or a wireless access device, and is not limited herein. For example, the operations performed by the terminal device may also be performed by a module (e.g., a chip) in the terminal device, and similarly, the operations performed by the wireless access device may also be performed by a module (e.g., a chip) in the wireless access device. Referring to fig. 2-1, a communication method provided by the present application includes:

201. and carrying out pi/2 BPSK modulation on the first information to obtain modulated first information.

In some possible implementations, the first information may be a Code Word (CW) of a PUSCH in Long Term Evolution (LTE), and the first information may also be a CW of a PUCCH in LTE, which is not limited herein. It should be noted that the CW may be generated by channel coding (and interleaving) from information in a Transport Block (TB). In this embodiment of the application, the first information may be multiple bits (e.g., 0101000100) in the CW, or may also be 1 bit (e.g., 0 or 1) in the CW, which is not limited herein.

In the embodiments of the present application, BPSK modulation is a technique in which digital information is transferred by using a change in the phase of a carrier wave while the amplitude and frequency are kept constant. In some possible implementations, a binary digit (0 or 1) is taken as an input by the modulation mapper, and the resulting complex-valued modulation symbol is taken as an output. For example, first information is input, and modulated first information is output. For example, pi/2 BPSK modulation is a common way of BPSK modulation.

For example, the first information is b (i) (i.e., 0 or 1), i is the index of the network (or cell), modulated by π/2BPSK, and transmitted by

j is an imaginary symbol, and d (i) is a modulation symbol obtained by subjecting b (i) to pi/2 BPSK modulation. That is, after pi/2 BPSK modulation is performed on b (i), the modulated first information is obtained as a complex-valued modulation symbol d (i). According to different values of i and b (i), different modulation symbols d (i) and corresponding phases can be obtained, as shown in table 1-1 below:

TABLE 1-1

For example, the mapping relationship between d (i) and phase shown in the above table 1-1 may be as shown in fig. 2-2.

In the embodiment of the present application, after pi/2 BPSK modulation is performed on b (i), a plurality of consecutive modulation symbols can be obtained, for example, the consecutive 2 modulation symbols are d (2 i) and d (2i + 1). When b (i) =0, then

Different modulation symbols and corresponding phases are obtained, as shown in the following tables 1-2:

tables 1 to 2

If b (i) =1, then

Different modulation symbols and corresponding phases can be obtained as shown in tables 1-3 below:

tables 1 to 3

As another example, consecutive 4 modulation symbols: d (4 i), d (4i + 1), d (4i + 2), d (4i + 3). Then, if b (i) =0, then

Different modulation symbols and corresponding phases can be obtained as shown in tables 1-4 below:

tables 1 to 4

If b (i) =1, then

Different modulation symbols and corresponding phases may be obtained, as shown in tables 1-5 below：

Tables 1 to 5

Generally, 2 in succession ⁿ The modulation symbols are: d (2) ⁿ *i)、d(2 ⁿ *i+1)、d(2 ⁿ *i+2)、 d(2 ⁿ *i+3)、……、d(2 ⁿ *i+2 ⁿ -1). If b (i) =0, then

Different modulation symbols and corresponding phases can be obtained, as specified in tables 1-6 below:

tables 1 to 6

If b (i) =1, then

Different modulation symbols and corresponding phases can be obtained, as shown in the following tables 1 to 7:

tables 1 to 7

202. And carrying out layer mapping on the modulated first information to obtain the layer-mapped first information.

In the embodiment of the present application, the modulated first information is modulation symbol d (i) obtained by performing pi/2 BPSK modulation on the first information b (i).

It should be noted that the layer mapping is to map the modulation symbols d (i) to different transmission layers. It should be noted that the transmission layers are transmission channels, and the number of transmission layers indicates the number of transmission channels used simultaneously. For example, the number of transmission layers is 2, i.e., 2 transmission channels simultaneously transmit information. The information transmitted by the two transport layers may be the same or different at the same time, and is not limited herein. In the embodiment of the present application, the number of transport layers is greater than or equal to 2, for example, 2, 3, 4, 5 \8230; \8230, which is not limited herein. For example, modulation symbols shown in tables 1 to 4, tables 1 to 5, tables 1 to 6, or tables 1 to 7 are mapped to the multi-layer transmission layer, respectively, to obtain layer-mapped first information, where the layer-mapped first information includes modulation symbols at various positions in each layer of the multi-layer transmission layer.

In the embodiment of the present application, in order to ensure the low PAPR characteristic of pi/2 BPSK modulation, when performing layer mapping on the modulated first information, 2 conditions need to be met simultaneously: condition 1, there should be a phase difference of 45 °, 90 °, or 135 ° between any two adjacent modulation symbols within the layer 1 transport layer; condition 2, there should be a 45 °, 90 °, or 135 ° phase difference between 2 modulation symbols mapped at corresponding positions of the 2-layer transport layer.

If the mapping mode meets the 2 conditions, pi/2 BPSK modulation can be enabled to support 2 or more transmission layers, two adjacent modulation symbols can be mapped on different transmission layers, and it is ensured that the phase difference between the two adjacent modulation symbols in the same transmission layer is not equal to 0 ° or 180 °, so that the low PAPR characteristic of pi/2 BPSK modulation is also ensured under the condition of ensuring a high transmission rate.

Various mapping modes meeting the above 2 conditions are described below by way of example.

Example 1, when the number of transmission layers is 2, various modulation symbols as shown in tables 1 to 4 or tables 1 to 5 are mapped onto the 2-layer transmission layer. As shown in the following table 2-1, the 1 st modulation symbol and the 2 nd modulation symbol in the 4 consecutive modulation symbols may be sequentially mapped into the 1 st layer of the 2-layer transmission layer, and the 4 th modulation symbol and the 3 rd modulation symbol in the 4 modulation symbols may be sequentially mapped into the 2 nd layer of the 2-layer transmission layer. For example, the mapping can be shown in the following table 2-1:

TABLE 2-1

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(4i)	x ⁽⁰⁾ (i+1)＝d(4i+1)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(4i+3)	x ⁽¹⁾ (i+1)＝d(4i+2)

X in layer 1 transport layer ⁽⁰⁾ (i) Is 45 ° (or 225 °, -135 °), x ⁽⁰⁾ The phase of (i + 1) is 135 ° (or 315 °, -45 °), so x ⁽⁰⁾ (i) And x ⁽⁰⁾ The phase difference between (i + 1) is 90 °. X in layer 2 transport layer ⁽¹⁾ (i) Is 135 ° (or 315 °, -45 °), x ⁽¹⁾ The phase of (i + 1) is 45 ° (or 225 °, -135 °), so x ⁽¹⁾ (i) And x ⁽¹⁾ The phase difference between (i + 1) is 90 °, the above condition 1 is satisfied. X in layer 1 transport layer ⁽⁰⁾ (i) And x in layer 2 transport layer ⁽¹⁾ (i) 90 deg. between, x in layer 1 transport layer ⁽⁰⁾ X in (i + 1) and layer 2 transport layers ⁽¹⁾ The phase difference between (i + 1) is 90 °, the above condition 2 is satisfied. Therefore, the mapping scheme shown in table 2-1 satisfies the above conditions 1 and 2, and thus can ensure the low PAPR characteristic of the pi/2 BPSK modulation, and thus can ensure the low PAPR characteristicTwo adjacent modulation symbols will be mapped on different transmission layers, which ensures a higher transmission rate.

It should be noted that, based on the above 2 conditions, the positions of the modulation symbols in table 2-1 can be transformed to obtain the following tables 2-2, 2-3, 2-4, and 2-5:

tables 2 to 2

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(4i+3)	x ⁽⁰⁾ (i+1)＝d(4i+2)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(4i)	x ⁽¹⁾ (i+1)＝d(4i+1)

Tables 2 to 3

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(4i+1)	x ⁽⁰⁾ (i+1)＝d(4i)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(4i+2)	x ⁽¹⁾ (i+1)＝d(4i+3)

Tables 2 to 4

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(4i+2)	x ⁽⁰⁾ (i+1)＝d(4i+1)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(4i+3)	x ⁽¹⁾ (i+1)＝d(4i)

Tables 2 to 5

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(4i+2)	x ⁽⁰⁾ (i+1)＝d(4i+3)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(4i+1)	x ⁽¹⁾ (i+1)＝d(4i)

The mapping manners shown in tables 2-2, 2-3, 2-4 and 2-5 all conform to the above condition 1 and condition 2, so that the low PAPR characteristic of pi/2 BPSK modulation can be ensured, that is, two adjacent modulation symbols can be mapped on different transmission layers, thereby ensuring a higher transmission rate.

Generally, when the number of transmission layers is 2, various modulation symbols shown in tables 1 to 6 or tables 1 to 7 are mapped to the 2-layer transmission layer, and specifically, the mapping manner can be shown in the following table 3 to 1:

TABLE 3-1

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(2 ⁿ *i)	x ⁽⁰⁾ (i+1)＝d(2 ⁿ *i+1)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(2 ⁿ *i+3)	x ⁽¹⁾ (i+1)＝d(2 ⁿ *i+2)

Wherein x in the layer 1 transport layer ⁽⁰⁾ (i) Is 45 ° (or 225 °, -135 °), x ⁽⁰⁾ The phase of (i + 1) is 135 ° (or 315 °, -45 °), so x ⁽⁰⁾ (i) And x ⁽⁰⁾ The phase difference between (i + 1) is 90 °. X in layer 2 transport layer ⁽¹⁾ (i) Is 135 ° (or 315 °, -45 °), x ⁽¹⁾ The phase of (i + 1) is 45 ° (or 225 °, -135 °), so x ⁽¹⁾ (i) And x ⁽¹⁾ The phase difference between (i + 1) is 90 °, the above condition 1 is satisfied. X in layer 1 transport layer ⁽⁰⁾ (i) And x in layer 2 transport layer ⁽¹⁾ (i) 90 deg. phase difference therebetween, x in layer 1 transport layer ⁽⁰⁾ X in the (i + 1) and layer 2 transport layers ⁽¹⁾ The phase difference between (i + 1) is 90 °, the above condition 2 is satisfied. Therefore, the mapping manner shown in table 3-1 meets the above condition 1 and condition 2, so that the low PAPR characteristic of pi/2 BPSK modulation can be ensured, and thus two adjacent modulation symbols can be mapped on different transmission layers, thereby ensuring a higher transmission rate.

It should be noted that, based on the above 2 conditions, the positions of the modulation symbols in table 3-1 may be transformed to obtain the following tables 3-2, 3-3, 3-4, and 3-5:

TABLE 3-2

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(2 ⁿ *i+3)	x ⁽⁰⁾ (i+1)＝d(2 ⁿ *i+2)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(2 ⁿ *i)	x ⁽¹⁾ (i+1)＝d(2 ⁿ *i+1)

Tables 3 to 3

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(2 ⁿ *i+1)	x ⁽⁰⁾ (i+1)＝d(2 ⁿ *i)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(2 ⁿ *i+2)	x ⁽¹⁾ (i+1)＝d(2 ⁿ *i+3)

Tables 3 to 4

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(2 ⁿ *i+2)	x ⁽⁰⁾ (i+1)＝d(2 ⁿ *i+1)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(2 ⁿ *i+3)	x ⁽¹⁾ (i+1)＝d(2 ⁿ *i)

Tables 3 to 5

Layer 1 transport layer	x ⁽⁰⁾ (i)＝d(2 ⁿ *i+2)	x ⁽⁰⁾ (i+1)＝d(2 ⁿ *i+3)
			Layer 2 transport layer	x ⁽¹⁾ (i)＝d(2 ⁿ *i+1)	x ⁽¹⁾ (i+1)＝d(2 ⁿ *i)

The mapping manners shown in tables 3-2, 3-3, 3-4 and 3-5 all conform to the condition 1 and the condition 2, so that the low PAPR characteristic of the pi/2 BPSK modulation can be ensured, that is, two adjacent modulation symbols can be mapped on different transmission layers, thereby ensuring a higher transmission rate.

The above example 1 describes an implementation manner of directly mapping the modulation symbols to the multi-layer transmission layer, and in some feasible implementation manners, the modulation symbols may also be mapped to the multi-layer transmission layer after being subjected to certain processing.

In some possible implementations, 2 of the modulation symbols in tables 1-4 with a phase difference of 90 ° may also be multiplied by

I.e. the corresponding phase is rotated by ± 45 °. Illustratively, multiply d (4i + 2) in tables 1-4 by

Get 1 or j, i.e. its phase is 0 ° or 90 °, multiply d (4i + 3)

To obtain j or-1, i.e.The phase is 90 ° or 180 °, as shown in table 4-1 below:

TABLE 4-1

Next, based on the 2 conditions, the above modulation symbols can be mapped to the transmission layer, which is described below by way of example.

Example 2, when the number of transmission layers is 2, the modulation symbols shown in table 4-1 or table 4-2 are mapped to the 2-layer transmission layer, and the mapping manner can be shown in the following table 4-2 as an example:

TABLE 4-2

In Table 4-2, x in the layer 1 transport layer ⁽⁰⁾ (i) And x ⁽⁰⁾ The phase difference between (i + 1) is 45 °, 90 ° or 135 °, x in layer 2 transport layer ⁽¹⁾ (i) And x ⁽¹⁾ The phase difference between (i + 1) is 45 °, 90 ° or 135 °, and the above condition 1 is satisfied. X in layer 1 transport layer ⁽⁰⁾ (i) And x in layer 2 transport layer ⁽¹⁾ (i) The phase difference between them is 45 deg., 90 deg. or 135 deg., x in the layer 1 transport layer ⁽⁰⁾ X in (i + 1) and layer 2 transport layers ⁽¹⁾ The phase difference between (i + 1) is 45 °, 90 ° or 135 °, and the above condition 2 is satisfied. Thus, x ⁽⁰⁾ (i)、x ⁽⁰⁾ (i+1)、x ⁽¹⁾ (i) And x ⁽¹⁾ The values in (i + 1) may be exchanged, and the obtained mapping manner only needs to meet the above conditions 1 and 2, which is not limited this time, so that the low PAPR characteristic of the pi/2 BPSK modulation can be ensured, and thus two adjacent modulation symbols can be mapped on different transmission layers, thereby ensuring a higher transmission rate.

Example 3, when the number of transmission layers is 4, various modulation symbols shown in table 4-1 or table 4-2 are mapped to the 4-layer transmission layer, and the mapping manner can be shown in table 5 below as an example:

TABLE 5

Wherein, x is ⁽⁰⁾ (i)、x ⁽¹⁾ (i)、x ⁽²⁾ (i)、x ⁽³⁾ (i) The values in (1) can be interchanged, x ⁽⁰⁾ (i+1)、x ⁽¹⁾ (i+1)、 x ⁽²⁾ (i+1)、x ⁽³⁾ The (i + 1) may also be adaptively interchanged, and the mapping manner may be in accordance with the 2 conditions described above, which is not limited herein.

Since the mapping manner shown in table 5 conforms to the above condition 1 and condition 2, the low PAPR characteristic of the pi/2 BPSK modulation can be ensured, and thus two adjacent modulation symbols can be mapped on different transmission layers, which ensures a higher transmission rate.

Example 4, when the number of transmission layers is 3, 2 modulation symbols of consecutive 4 modulation symbols corresponding to bits in the modulated first information may be processed, so that a corresponding phase thereof is rotated by 45 ° or-45 °, to obtain unprocessed 2 modulation symbols and processed 2 modulation symbols, and then any 3 modulation symbols of the unprocessed 2 modulation symbols and the processed 2 modulation symbols are mapped to any layer of the 3 transmission layers, so as to obtain the layer-mapped first information.

For example, modulation symbols shown in table 4-1 or table 4-2 may be mapped to a 3-layer transmission layer, and the mapping manner may be shown in table 6 below:

TABLE 6

Wherein, x is ⁽⁰⁾ (i)、x ⁽¹⁾ (i)、x ⁽²⁾ (i) The value of (C) may be from d (4 i), d (4 i + 1),

And

optionally three of (1), the positions of which can be arbitrarily interchanged, x ⁽⁰⁾ (i+1)、x ⁽¹⁾ (i+1)、x ⁽²⁾ (i + 1) may also be selected from d (4 i), d (4 i + 1),

And

the number of the mapping modes is 3, so that the mapping modes meet the 2 conditions, which is not limited herein.

Therefore, the mapping manner shown in table 6 meets the above condition 1 and condition 2, so that the low PAPR characteristic of the pi/2 BPSK modulation can be ensured, and thus two adjacent modulation symbols can be mapped on different transmission layers, which ensures a higher transmission rate.

203. And performing DFT precoding on the layer-mapped first information to obtain the DFT-precoded first information.

In the embodiment of the present application, the first information after layer mapping is obtained, and DFT precoding may be performed on the first information after layer mapping. Specifically, DFT conversion is performed on modulation symbols of each of the different transmission layers after layer mapping. When DFT precoding is performed, in addition to modulation symbols corresponding to the first information after layer mapping, corresponding symbols such as a Phase Tracking Reference Signal (PTRS), a demodulation reference signal (DMRS), a channel Sounding Reference Signal (SRS), and a Physical Uplink Control Channel (PUCCH) may be included, which is not limited herein.

204. And precoding the first information after DFT precoding to obtain the first information after precoding.

In the embodiment of the application, after the first information after DFT precoding is obtained, the first information after DFT precoding may be precoded through the precoded information. It should be noted that the precoding information may be a precoding matrix, where a row number of the precoding matrix is equal to the number of transmit antenna ports, the number of transmit antenna ports is greater than or equal to 1, a column number of the precoding matrix is equal to the number of transmission layers, and a codeword included in the precoding matrix is an incoherent codeword or a coherent codeword.

It should be noted that, when the code word included in the precoding matrix is a non-coherent code word, the precoding matrix is a non-coherent precoding matrix. The non-coherent code word includes only one non-zero element in each column, and the rows where the non-zero elements in any two columns in each precoding matrix are located are different. When there are multiple transmit antenna ports, precoding processing needs to be performed on the DFT precoded first information.

It should be noted that, in order to ensure that the PAPR of the precoded first information is not changed, the first information after DFT precoding may be precoded by using a non-coherent precoding matrix or a partially coherent precoding matrix, so that the PAPR may not be affected under the condition of ensuring multiple transmission layers. In some possible implementations, the precoding may be a multiple-in multiple-out (MIMO) precoding.

It should be noted that the precoding matrix may be directly indicated by the radio access network device or the core network device, and then the first information after DFT precoding is precoded according to the indicated precoding matrix. Or, the precoding matrix corresponding to the first information may also be determined according to the information of precoding on the SRS, which is indicated by the SRS resource indication information, through the SRS resource indication information indicated by the radio access network device or the core network device.

The following examples are given.

For the mapping manners shown in the above tables 4-4, 4-5, 4-6, 4-7, 4-8, 4-9, 4-10, 4-11, or 4-12, the precoding information (precoding matrix) thereof may include at least one of the following:

or

Or:

or

Note that, for the mapping scheme shown in table 5, the precoding information (precoding matrix) may include at least one of the following:

or

Note that, for the mapping method shown in table 6, the information (precoding matrix) of precoding may include at least one of the following:

or

205. And carrying out OFDM waveform generation on the pre-coded first information to obtain first information of a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform.

In the embodiment of the application, after the precoded first information is obtained, the precoded first information may be generated into an OFDM waveform to obtain the first information of the DFT-s-OFDM waveform, that is, a symbol on each of the transmitting antenna ports is generated into an OFDM waveform to obtain the first information of the DFT-s-OFDM waveform.

Through the steps 201-205, the first information is subjected to signal processing to obtain the processed first information.

206. And sending the processed first information to the network equipment.

In the embodiment of the application, the terminal equipment sends the first information of the DFT-s-OFDM waveform to the wireless access network equipment, or the wireless access network equipment sends the first information of the DFT-s-OFDM waveform to the core network equipment.

It should be noted that for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

To facilitate better implementation of the above-described aspects of the embodiments of the present application, the following also provides relevant means for implementing the above-described aspects.

Referring to fig. 3, a communication apparatus 300 according to an embodiment of the present disclosure may include: a transceiver module 301 and a processing module 302, wherein,

the processing module 302 is configured to perform signal processing on the first information to obtain processed first information, where the signal processing includes pi/2 binary phase shift keying BPSK modulation, layer mapping, discrete fourier transform DFT precoding, and orthogonal frequency division multiplexing OFDM waveform generation.

The transceiver module 301 is configured to send the processed first information to the network device.

In some possible implementations, the processing module 302 is specifically configured to:

carrying out pi/2 BPSK modulation on the first information to obtain modulated first information, wherein the number of transmission layers is greater than or equal to 2; carrying out layer mapping on the modulated first information to obtain layer-mapped first information; DFT pre-coding is carried out on the first information after layer mapping, and the first information after DFT pre-coding is obtained; precoding the first information after DFT precoding to obtain the first information after precoding; carrying out OFDM waveform generation on the pre-coded first information to obtain first information of a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform; the transceiver module 301 is specifically configured to: first information of a DFT-s-OFDM waveform is transmitted to a network device.

In some possible implementations, the number of transmission layers is 2, and the processing module 302 is specifically configured to: and mapping 4 continuous modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively to obtain layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the 4 continuous modulation symbols are mapped to the 1 st layer of the 2 transmission layers in sequence, and the 4 th modulation symbol and the 3 rd modulation symbol in the 4 modulation symbols are mapped to the 2 nd layer of the 2 transmission layers in sequence.

and mapping continuous 4 modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively to obtain layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the continuous 4 modulation symbols are sequentially mapped to the 1 st layer of the 2-layer transmission layer, and the 3 rd modulation symbol and the 4 th modulation symbol in the 4 modulation symbols are sequentially mapped to the 2 nd layer of the 2-layer transmission layer.

or

or

It should be noted that, because the contents of information interaction, execution process, and the like between the modules/units of the apparatus are based on the same concept as the method embodiment of the present application, the technical effect brought by the contents is the same as the method embodiment of the present application, and specific contents may refer to the description in the foregoing method embodiment of the present application, and are not described herein again.

The embodiment of the present application further provides a computer storage medium, where the computer storage medium stores a program, and the program executes some or all of the steps described in the above method embodiments.

Referring to fig. 4, a communication apparatus 400 according to another embodiment of the present application is described, including: a receiver 401, a transmitter 402, a processor 403 and a memory 404. In some embodiments of the present application, the receiver 401, the transmitter 402, the processor 403 and the memory 404 may be connected by a bus or other means, wherein fig. 4 illustrates the connection by a bus.

Memory 404 may include both read-only memory and random-access memory and provides instructions and data to processor 403. A portion of memory 404 may also include non-volatile random access memory (NVRAM). The memory 404 stores an operating system and operating instructions, executable modules or data structures, or a subset or an expanded set thereof, wherein the operating instructions may include various operating instructions for performing various operations. The operating system may include various system programs for implementing various basic services and for handling hardware-based tasks.

Processor 403 controls the operation of the communication device, and processor 403 may also be referred to as a Central Processing Unit (CPU). In a particular application, the various components of the communication device are coupled together by a bus system that may include a power bus, a control bus, a status signal bus, etc., in addition to a data bus. For clarity of illustration, the various buses are referred to in the figures as a bus system.

The method disclosed in the embodiments of the present application may be applied to the processor 403, or implemented by the processor 403. Processor 403 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 403. The processor 403 may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 404, and the processor 403 reads the information in the memory 404, and completes the steps of the method in combination with the hardware.

The receiver 401 may be used to receive input numeric or character information and to generate signal inputs related to related settings and function controls of the communication device, the transmitter 402 may include a display device such as a display screen, and the transmitter 402 may be used to output numeric or character information through an external interface.

In this embodiment, the processor 403 is configured to execute the communication method executed by the foregoing communication apparatus.

In another possible design, when the communication device is a chip, the method includes: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, a pin or a circuit, etc. The processing unit may execute the computer-executable instructions stored in the storage unit to cause the chip in the terminal to execute the method for transmitting the wireless report information according to any one of the first aspect. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

The processor mentioned in any of the above may be a general purpose central processing unit, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the programs of the above methods.

It should be noted that the above-described embodiments of the apparatus are merely schematic, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiments of the apparatus provided in the present application, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be implemented as one or more communication buses or signal lines.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits. However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be substantially embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods described in the embodiments of the present application.

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 in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (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 a computer can store or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

Claims

1. A method of communication, comprising:

performing signal processing on the first information to obtain processed first information, wherein the signal processing comprises pi/2 binary phase shift keying BPSK modulation, layer mapping, discrete Fourier Transform (DFT) precoding, precoding and Orthogonal Frequency Division Multiplexing (OFDM) waveform generation;

and sending the processed first information to network equipment.

2. The method of claim 1,

the pi/2 BPSK modulation comprises:

carrying out the pi/2 BPSK modulation on the first information to obtain modulated first information, wherein the number of transmission layers is greater than or equal to 2;

the layer mapping includes:

performing the layer mapping on the modulated first information to obtain layer-mapped first information;

the DFT precoding includes:

performing the DFT precoding on the first information after layer mapping to obtain first information after DFT precoding;

the pre-coding includes:

performing the pre-coding on the DFT pre-coded first information to obtain pre-coded first information;

the OFDM waveform generation includes:

the OFDM waveform generation is carried out on the pre-coded first information to obtain first information of a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform;

the sending the processed first information to the network device includes:

transmitting first information of the DFT-s-OFDM waveform to the network device.

3. The method of claim 2, wherein the number of transmission layers is 2, and the performing the layer mapping on the modulated first information to obtain the layer-mapped first information comprises:

and mapping continuous 4 modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively to obtain the layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the continuous 4 modulation symbols are sequentially mapped to the 1 st layer of the 2-layer transmission layers, and the 4 th modulation symbol and the 3 rd modulation symbol in the 4 modulation symbols are sequentially mapped to the 2 nd layer of the 2-layer transmission layers.

4. The method of claim 2, wherein the number of transmission layers is 2, and the performing the layer mapping on the modulated first information to obtain the layer-mapped first information comprises:

and mapping 4 continuous modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively to obtain the layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the 4 modulation symbols are sequentially mapped to the 1 st layer of the 2-layer transmission layers, and the 3 rd modulation symbol and the 4 th modulation symbol in the 4 modulation symbols are sequentially mapped to the 2 nd layer of the 2-layer transmission layers.

5. The method according to any of claims 1-4, wherein the precoded information comprises at least one of:

or

6. The method according to any of claims 1-4, wherein the pre-coded information comprises at least one of:

or

7. A communications apparatus, comprising:

the processing module is used for carrying out signal processing on the first information to obtain processed first information, wherein the signal processing comprises pi/2 binary phase shift keying BPSK modulation, layer mapping, discrete Fourier Transform (DFT) precoding, precoding and Orthogonal Frequency Division Multiplexing (OFDM) waveform generation;

and the transceiver module is used for sending the processed first information to the network equipment.

8. The communication device according to claim 7, wherein the processing module is specifically configured to:

carrying out the pi/2 BPSK modulation on the first information to obtain modulated first information, wherein the number of layers of the transmission layer is greater than or equal to 2;

the pre-coded first information is subjected to OFDM waveform generation to obtain first information of a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform;

the transceiver module is specifically configured to: transmitting first information of the DFT-s-OFDM waveform to the network device.

9. The communications apparatus according to claim 8, wherein the number of transmission layers is 2, and the processing module is specifically configured to:

and mapping 4 continuous modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively to obtain the layer-mapped first information, wherein the 1 st modulation symbol and the 2 nd modulation symbol in the 4 continuous modulation symbols are mapped to the 1 st layer of the 2 transmission layers in sequence, and the 4 th modulation symbol and the 3 rd modulation symbol in the 4 modulation symbols are mapped to the 2 nd layer of the 2 transmission layers in sequence.

10. The communications apparatus according to claim 8, wherein the number of transmission layers is 2, and the processing module is specifically configured to:

11. A communication apparatus according to any of claims 7-10, wherein the precoded information comprises at least one of:

or

12. A communication apparatus according to any of claims 7-10, wherein the precoded information comprises at least one of:

or

13. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program that causes a computer device to execute the method of any one of claims 1-6.

14. A computer program product, comprising computer executable instructions, the computer executable instructions being stored in a computer readable storage medium; at least one processor of a device reads the computer-executable instructions from the computer-readable storage medium, execution of the computer-executable instructions by the at least one processor causing the device to perform the method of any of claims 1-6.

15. A communication device, comprising at least one processor, a memory, and a communication interface;

the at least one processor is coupled with the memory and the communication interface;

the memory is configured to store instructions, the processor is configured to execute the instructions, and the communication interface is configured to communicate with other communication devices under control of the at least one processor;

the instructions, when executed by the at least one processor, cause the at least one processor to perform the method of any of claims 1-6.

16. A chip system, comprising a processor and a memory, the memory and the processor interconnected by a line, the memory having stored therein instructions, the processor configured to perform the method of any of claims 1-6.