WO2023025082A1

WO2023025082A1 - Communication method and communication apparatus

Info

Publication number: WO2023025082A1
Application number: PCT/CN2022/113870
Authority: WO
Inventors: 胡丹; 张旭
Original assignee: 华为技术有限公司
Priority date: 2021-08-23
Filing date: 2022-08-22
Publication date: 2023-03-02
Also published as: CN115714703A

Abstract

Disclosed in the embodiments of the present application are a communication method and a communication apparatus, which are used for performing signal processing on an uplink signal. The method comprises: first performing signal processing on first information, so as to obtain processed first information, wherein the signal processing comprises π/2 BPSK modulation, layer mapping, discrete Fourier transform (DFT) pre-coding, pre-coding and OFDM waveform generation; and finally, sending the processed first information to a network device, and mapping two modulation symbols onto different transmission layers by means of layer mapping. Thus, the transmission rate is increased.

Description

A communication method and communication device

This application claims the priority of the Chinese patent application with the application number 202110969071.2 and the title of the invention "a communication method and communication device" submitted to the China Patent Office on August 23, 2021, the entire contents of which are incorporated in this application by reference .

technical field

The present application relates to the technical field of communication, and in particular, to a communication method and a communication device.

Background technique

For the new generation of wireless access technology (new radio access technology, NR), the transmission of its uplink signal supports π/2 binary phase shift keying (binary phase shift keying, BPSK) modulation. By processing the uplink signal through π/2 BPSK modulation, multiple modulation symbols can be obtained, and the phase difference between any two adjacent modulation symbols is 90°, so as to ensure a lower peak-to-average signal after channel processing. Ratio (peak-to-average ratio, PAPR). However, the current π/2 BPSK modulation only supports single-layer transmission, and the transmission rate is limited.

Contents of the invention

Embodiments of the present application provide a communication method and a communication device, which are used to perform signal processing on uplink signals.

The first aspect of the present application provides a communication method. In this method, the first information is first signal-processed to obtain the processed first information. The signal processing includes π/2 BPSK modulation, layer mapping, and discrete Fourier transform. Transform DFT precoding, precoding and OFDM waveform generation, and finally send the processed first information to the network equipment, and map the two modulation symbols on different transmission layers through layer mapping to improve the transmission rate.

In some feasible implementation manners, the π/2 BPSK modulation includes: performing the π/2 BPSK modulation on the first information to obtain the modulated first information, and the number of layers of the transmission layer is greater than or equal to 2 The layer mapping includes: performing the layer mapping on the modulated first information to obtain the layer-mapped first information; the DFT precoding includes: performing the layer mapping on the layer-mapped first information The DFT precoding is performed to obtain the first information after DFT precoding; the precoding includes: performing the precoding on the first information after DFT precoding to obtain the first information after precoding; the OFDM The waveform generation includes: performing the OFDM waveform generation on the precoded first information to obtain the first information of the discrete Fourier transform extended orthogonal frequency division multiplexing DFT-s-OFDM waveform; Sending the processed first information includes: sending the first information of the DFT-s-OFDM waveform to the network device, and in the case of a higher transmission rate, the low π/2 BPSK modulation is also guaranteed. PAPR characteristics.

In some feasible implementation manners, the number of transmission layers is 2, and performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: converting the modulated first information The 4 consecutive modulation symbols corresponding to the bits in the information are respectively mapped to 2 transmission layers to obtain the first information after the layers are mapped, wherein the first modulation symbol in the 4 consecutive modulation symbols and The second modulation symbol is sequentially mapped to the first layer of the 2-layer transmission layer, and the fourth modulation symbol and the third modulation symbol among the 4 modulation symbols are sequentially mapped to the second layer of the 2-layer transmission layer. layer, so that the phase difference between any two adjacent modulation symbols in any transmission layer is equal to 90°, and the phase difference between modulation symbols mapped to corresponding positions on multiple transmission layers is equal to 90°, ensuring In the case of a higher transmission rate, the low PAPR characteristics of π/2 BPSK modulation are also guaranteed.

In some feasible implementation manners, the number of transmission layers is 2, and performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: converting the modulated first information The 4 consecutive modulation symbols corresponding to the bits in the information are respectively mapped to the 2 transmission layers to obtain the first information after the layers are mapped, wherein the first modulation symbol and the second modulation symbol in the 4 modulation symbols are The modulation symbols are sequentially mapped to the first layer of the 2-layer transmission layer, and the third modulation symbol and the fourth modulation symbol among the 4 modulation symbols are sequentially mapped to the second layer of the 2-layer transmission layer. , so that the phase difference between any two adjacent modulation symbols in any transmission layer is equal to 90°, and the phase difference between modulation symbols mapped to corresponding positions on multiple transmission layers is equal to 90°, which ensures a relatively In the case of high transmission rate, the low PAPR characteristic of π/2 BPSK modulation is also guaranteed.

In some feasible implementation manners, the precoded information includes at least one of the following:

or

or

Then, after precoding, the low PAPR characteristic of π/2 BPSK modulation is also guaranteed when a high transmission rate is guaranteed.

In some feasible implementation manners, the number of transmission layers is 4, and performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: converting the modulated first information Process 2 of the 4 consecutive modulation symbols corresponding to bits in a piece of information so that their corresponding phases are rotated by 45° or -45° to obtain 2 unprocessed modulation symbols and 2 processed modulation symbols ; Mapping one of the unprocessed two modulation symbols and one of the processed two modulation symbols to any layer of the four-layer transmission layer to obtain the layer mapping The last first information makes the phase difference between any two adjacent modulation symbols in any transmission layer equal to 45°, 90° or 135°, and is mapped on the modulation symbols at corresponding positions on multiple transmission layers The phase difference between them is equal to 45°, 90° or 135°, which ensures the low PAPR characteristics of π/2 BPSK modulation while ensuring a high transmission rate.

or

In some feasible implementation manners, the number of transmission layers is 3, and performing the layer mapping on the modulated first information to obtain the layer-mapped first information includes: converting the modulated first information Process 2 of the 4 consecutive modulation symbols corresponding to bits in a piece of information so that their corresponding phases are rotated by 45° or -45° to obtain 2 unprocessed modulation symbols and 2 processed modulation symbols ; Mapping any 3 modulation symbols of the 2 unprocessed modulation symbols and the processed 2 modulation symbols to any layer of the 3-layer transmission layer, to obtain the first information after the layer mapping , 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 modulation symbols mapped on corresponding positions on multiple transmission layers is equal to 45°, 90° or 135°, which guarantees the low PAPR characteristics of π/2 BPSK modulation while ensuring a high transmission rate.

or

The second aspect of the present application provides a communication device, the communication device is used to execute the method described in any one of the foregoing first aspects.

In a third aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer executes any one of the above-mentioned first aspect or second aspect. method described in the item.

The fourth aspect of the present application provides a computer program product, the computer program product includes computer-executable instructions, and the computer-executable instructions are stored in a computer-readable storage medium; at least one processor of the device can read the computer-readable storage medium. The computer executes the instruction, and at least one processor executes the computer-executed instruction to make the device implement the method provided by the above first aspect or any possible implementation manner of the first aspect.

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

A sixth aspect of the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor, configured to support a communication device to implement the functions involved in the first aspect or any possible implementation manner of the first aspect.

In a possible design, the system-on-a-chip may further include a memory, and the memory is used for storing necessary program instructions and data of the communication device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

Wherein, the technical effects brought about by the third to sixth aspects or any one of the possible implementations may refer to the first aspect or the technical effects brought about by different possible implementations of the first aspect, which will not be repeated here.

Description of drawings

Figure 1-1 is a schematic diagram of the architecture of the mobile communication system provided by this application;

Figure 1-2 is another schematic diagram of the architecture of the mobile communication system provided by the present application;

Figure 2-1 is a schematic diagram of an embodiment of a communication method provided by the present application;

Figure 2-2 is a schematic diagram of the mapping relationship between modulation symbols and corresponding phases in this application;

FIG. 3 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

Embodiments of the present application are described below in conjunction with the accompanying drawings. The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is merely a description of the manner in which objects with the same attribute are described in the embodiments of the present application. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, product, or apparatus comprising a series of elements is not necessarily limited to those elements, but may include elements not expressly included. Other elements listed explicitly or inherent to the process, method, product, or apparatus.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as code division multiple access (code division multiple access, CDMA), time division multiple access (time division multiple access, TDMA), frequency division multiple access (frequency division multiple access) , FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency-division multiple access (single carrier FDMA, SC-FDMA) and other systems, etc. The term "system" can be used interchangeably with "network". The CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA), CDMA2000, and the like. UTRA may include wideband CDMA (wideband CDMA, WCDMA) technology and other CDMA variant technologies. CDMA2000 can cover interim standard (interim standard, IS) 2000 (IS-2000), IS-95 and IS-856 standards. A TDMA system may implement a wireless technology such as global system for mobile communication (GSM). OFDMA system can implement such as evolved universal wireless terrestrial access (evolved UTRA, E-UTRA), ultra mobile broadband (umb), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA and other wireless technologies. UTRA and E-UTRA are UMTS and UMTS evolutions. 3GPP in long term evolution (long term evolution, LTE) and various versions based on LTE evolution are new versions of UMTS using E-UTRA. The technical solution of the embodiment of the present application can also be applied to the new radio (new radio, NR) system in the fifth generation (5th generation, 5G) mobile communication system of the long term evolution (long termevolution, LTE) system and the future mobile communication system, etc. .

The system architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

As shown in FIG. 1-1, it is a schematic structural diagram of a mobile communication system applied in the 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 (such as the terminal device 130 and the terminal device 140 in FIG. 1-1). The terminal device is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner. Alternatively, the mobile communication system includes core network equipment, at least two radio access network equipment and at least one terminal equipment, as shown in Figure 1-2.

The terminal equipment in the embodiment of the present application may be called a terminal (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) and so on. Terminal equipment can be mobile phone, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, industrial control (industrial control) ), wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

The radio access network device in the embodiment of the present application is an access device for a terminal device to access the mobile communication system through wireless means, and may be a base station NodeB, an evolved base station (evolved NodeB, eNB), a transmission and reception point (transmission reception point, TRP), the next generation NodeB (gNB) in the 5G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc. The embodiment of the present application does not limit the specific technology and specific equipment form adopted by the radio access network equipment.

The core network equipment and the wireless access network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same physical equipment, or it can be a physical equipment It integrates some functions of core network equipment and some functions of wireless access network equipment. Terminal equipment can be fixed or mobile. It should be noted that core network equipment, radio access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft and drones in the air , balloons and satellites. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device. In this embodiment of the present application, a terminal device or a 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 memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide the method according to the embodiment of the present application. For example, the execution body of the method provided by the embodiment of this application may be a wireless access network device or a terminal device, or a functional module in a terminal device or an access network device that can call a program and execute the program .

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

Additionally, 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 in this application covers a computer program accessible from any computer readable device, carrier or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or tapes, etc.), optical disks (e.g., compact discs (compact discs, CDs), digital versatile discs (digital versatile discs, DVDs), etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), card, stick or key drive, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.

In this application, the PUSCH can be used as the uplink data channel, the downlink shared channel (physical downlinkshare channel, PDSCH) can be used as the downlink data channel, or the PUCCH can be used as the uplink control channel, and the physical downlink control channel (physical downlink control channel, PDCCH) The downlink control channel is used as an example for description, but this application does not limit the specific names of the uplink data channel, downlink data channel, uplink control channel and downlink control channel, which may have different names in different systems.

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

Wherein, b(i) is the information to be modulated (such as a codeword), b(i)=0 or 1, i is the index of the network (or cell), j is an imaginary symbol, and d(i) is the pair b(i ) modulation symbols for π/2 BPSK modulation. Exemplarily, if i is an even number (then i+1 is an odd number), and b(i)=b(i+1)=0, then

That is, its phase is 45°,

That is, its phase is 135°; if i is an even number (then i+1 is an odd number), b(i)=b(i+1)=1, then

That is, its phase is 225° (or -135°),

That is, its phase is 315° (or -45°).

It can be seen that the phase difference between any two adjacent modulation symbols d(i) and d(i+1) is 90°, thus ensuring a lower peak-to-average ratio (peak-to- average ratio, PAPR). If i is an odd number, i+1 is an even number, which is similar to the above situation and will not be repeated here.

In order to increase the transmission rate, it is necessary to enable π/2 BPSK modulation to support the transmission of multiple transmission layers. Taking the 2-layer transmission layer as an example, two adjacent modulation symbols will be mapped on different layers: x ⁽⁰⁾ (i)=d(2i), x ⁽¹⁾ (i)=d(2i+1). Among them, d(2i) and d(2i+1) represent two consecutive modulation symbols, x ⁽⁰⁾ (i) represents the modulation symbol mapped to the first transmission layer, and x ⁽¹⁾ (i) represents the mapping to the modulation symbols on 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(2i) is 45° or -135°, and the phase of d(2i+2) is also 45° or -135°, then the phase difference between d(2i) and d(2i+2) is 0° or 180°, resulting in a phase difference of 0° or 180° between x ⁽⁰⁾ (i) and x ⁽⁰⁾ (i+1) in the same transmission layer, the low PAPR characteristics of π/2 BPSK modulation cannot be guaranteed.

Therefore, when using π/2 BPSK to modulate the uplink signal, it is impossible to use multiple transmission layers for transmission, which limits the transmission rate. To this end, a communication method and a communication device provided in the embodiments of the present application are used to perform signal processing on an uplink signal.

The communication system 100 provided by this application is introduced above, and the communication method based on the communication system 100 is introduced next. When the method is described below, its executing subject may be a terminal device or a wireless access device, which is not limited here. Exemplarily, the operations performed by the terminal device may also be performed by a module (for example, a chip) in the terminal device, and similarly, the operations performed by the wireless access device may also be performed by a module (for example, a chip) in the wireless access device )implement. Please refer to Figure 2-1, a communication method provided by this application, including:

201. Perform π/2 BPSK modulation on the first information to obtain modulated first information.

In some feasible implementations, the first information may be the transmission codeword (codeword, CW) of PUSCH in long term evolution (long term evolution, LTE), and the first information may also be the CW of PUCCH in LTE, which is not done here limited. It should be noted that the CW may be generated by channel coding (and interleaving) from information in a transport block (transport block, TB). In this embodiment of the present application, the first information may be multiple bits in the CW (for example, 0101000100), or may be one bit in the CW (for example, 0 or 1), which is not limited here.

In the embodiment of the present application, BPSK modulation is a technology that transmits digital information by using the phase change of the carrier while keeping the amplitude and frequency unchanged. In some feasible implementation manners, a binary number (0 or 1) is used as an input through a modulation mapper, and the generated complex-valued modulation symbol is used as an output. For example, the first information is input, and the modulated first information is output. For example, π/2 BPSK modulation is a common way of BPSK modulation.

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

j is an imaginary number symbol, and d(i) is a modulation symbol for performing π/2 BPSK modulation on b(i). That is, after performing π/2 BPSK modulation on b(i), the modulated first information obtained is 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

Exemplarily, the mapping relationship between d(i) and phase shown in Table 1-1 above may be as shown in FIG. 2-2.

In the embodiment of the present application, after b(i) is modulated by π/2 BPSK, multiple continuous modulation symbols can be obtained, for example, two continuous modulation symbols are d(2i) and d(2i+1). When b(i)=0, then

Then different modulation symbols and corresponding phases are obtained, as shown in Table 1-2 below:

Table 1-2

If b(i)=1, then

Then different modulation symbols and corresponding phases can be obtained, as shown in Table 1-3 below:

Table 1-3

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

Then different modulation symbols and corresponding phases can be obtained, as shown in Table 1-4 below:

Table 1-4

If b(i)=1, then

Then different modulation symbols and corresponding phases can be obtained, as shown in Table 1-5 below:

Table 1-5

Generally, the continuous 2 ⁿ modulation symbols are: d(2 ⁿ *i), d(2 ⁿ *i+1), d(2 ⁿ *i+2), d(2 ⁿ *i+3), ..., d( ²ⁿ *i+ ²ⁿ -1). If b(i)=0, then

Then different modulation symbols and corresponding phases can be obtained, as shown in Table 1-6 below:

Table 1-6

If b(i)=1, then

Then you can get different modulation symbols and corresponding phases, as shown in Table 1-7 below:

Table 1-7

202. Perform layer mapping on the modulated first information to obtain layer-mapped first information.

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

It should be noted that the layer mapping is to map the modulation symbol d(i) to different transmission layers. It should be noted that the transport layer is a transport channel, and the number of layers in the transport layer represents the number of transport channels used at the same time. For example, the number of layers of the transmission layer is 2, that is, two transmission channels transmit information at the same time. At the same time, the information transmitted by the two transport layers may be the same or different, which is not limited here. In the embodiment of the present application, the number of layers of the transmission layer is greater than or equal to 2, for example, 2, 3, 4, 5..., which is not limited here. For example, the modulation symbols shown in Table 1-4, Table 1-5, Table 1-6, or Table 1-7 are respectively mapped to multi-layer transmission layers to obtain the first information after layer mapping, and the first information after layer mapping The first information includes modulation symbols at each position in each layer of the multi-layer transmission layer.

In the embodiment of this application, in order to ensure the low PAPR characteristics of π/2 BPSK modulation, when the modulated first information is layer-mapped, two conditions need to be met at the same time: condition 1, any two in the 1-layer transmission layer There should be a phase difference of 45°, 90° or 135° between adjacent modulation symbols; condition 2, there should be a phase difference of 45°, 90° or 135° between the two modulation symbols mapped on the corresponding positions of the 2-layer transmission layer °Phase difference.

If the mapping method meets these two conditions, you can enable π/2 BPSK modulation to support two or more transmission layers, and you can map two adjacent modulation symbols on different transmission layers, and ensure the same The phase difference between two adjacent modulation symbols in the transmission layer is not equal to 0° or 180°, which ensures the low PAPR characteristics of π/2 BPSK modulation while ensuring a high transmission rate.

The following illustrates various mapping methods that meet the above two conditions by using examples.

Example 1, when the number of transmission layers is 2, map various modulation symbols shown in Table 1-4 or Table 1-5 to 2 transmission layers. Among them, as shown in Table 2-1 below, the first modulation symbol and the second modulation symbol of the four consecutive modulation symbols can be mapped to the first layer of the two-layer transmission layer in turn, and the first and second modulation symbols of the four modulation symbols The 4 modulation symbols and the third modulation symbol are sequentially mapped to the second layer of the two-layer transmission layer. Exemplarily, the mapping method can be shown in the following table 2-1:

table 2-1

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(4i) x ⁽⁰⁾ (i)=d(4i)	x ⁽⁰⁾(i+1)＝d(4i+1) x ⁽⁰⁾ (i+1)=d(4i+1)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(4i+3) x ⁽¹⁾ (i) = d(4i+3)	x ⁽¹⁾(i+1)＝d(4i+2) x ⁽¹⁾ (i+1)=d(4i+2)

The phase of x ⁽⁰⁾ (i) in the layer 1 transmission layer is 45° (or 225°, -135°), and the phase of x ⁽⁰⁾ (i+1) is 135° (or 315°, -45°) °), so the phase difference between x ⁽⁰⁾ (i) and x ⁽⁰⁾ (i+1) is 90°. The phase of x ⁽¹⁾ (i) in the layer 2 transmission layer is 135° (or 315°, -45°), and the phase of x ⁽¹⁾ (i+1) is 45° (or 225°, -135 °), so the phase difference between x ⁽¹⁾ (i) and x ⁽¹⁾ (i+1) is 90°, which meets condition 1 above. The phase difference between x ⁽⁰⁾ (i) in the layer 1 transmission layer and x ⁽¹⁾ (i) in the layer 2 transmission layer is 90°, and x ⁽⁰⁾ in the layer 1 transmission layer The phase difference between (i+1) and x ⁽¹⁾ (i+1) in the second transmission layer is 90°, then the above condition 2 is met. Therefore, the mapping method shown in Table 2-1 meets the above conditions 1 and 2, so it can guarantee the low PAPR characteristics of π/2 BPSK modulation, so two adjacent modulation symbols can be mapped to different transmission layers As shown above, a higher transmission rate is ensured.

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

Table 2-2

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(4i+3) x ⁽⁰⁾ (i)=d(4i+3)	x ⁽⁰⁾(i+1)＝d(4i+2) x ⁽⁰⁾ (i+1)=d(4i+2)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(4i) x ⁽¹⁾ (i)=d(4i)	x ⁽¹⁾(i+1)＝d(4i+1) x ⁽¹⁾ (i+1)=d(4i+1)

Table 2-3

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(4i+1) x ⁽⁰⁾ (i)=d(4i+1)	x ⁽⁰⁾(i+1)＝d(4i) x ⁽⁰⁾ (i+1)=d(4i)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(4i+2) x ⁽¹⁾ (i) = d(4i+2)	x ⁽¹⁾(i+1)＝d(4i+3) x ⁽¹⁾ (i+1)=d(4i+3)

Table 2-4

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(4i+2) x ⁽⁰⁾ (i)=d(4i+2)	x ⁽⁰⁾(i+1)＝d(4i+1) x ⁽⁰⁾ (i+1)=d(4i+1)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(4i+3) x ⁽¹⁾ (i) = d(4i+3)	x ⁽¹⁾(i+1)＝d(4i) x ⁽¹⁾ (i+1)=d(4i)

Table 2-5

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(4i+2) x ⁽⁰⁾ (i)=d(4i+2)	x ⁽⁰⁾(i+1)＝d(4i+3) x ⁽⁰⁾ (i+1)=d(4i+3)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(4i+1) x ⁽¹⁾ (i) = d(4i+1)	x ⁽¹⁾(i+1)＝d(4i) x ⁽¹⁾ (i+1)=d(4i)

The mapping methods shown in Table 2-2, Table 2-3, Table 2-4, and Table 2-5 all meet the above conditions 1 and 2, so the low PAPR characteristics of π/2 BPSK modulation can be guaranteed, that is, the Two adjacent modulation symbols will be mapped on different transmission layers, thus ensuring a higher transmission rate.

Generally, when the number of layers of the transmission layer is 2, the various modulation symbols shown in Table 1-6 or Table 1-7 are mapped to the 2-layer transmission layer. Specifically, the mapping method can be shown in the following table 3- 1 shows:

Table 3-1

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(2 ⁿi) x ⁽⁰⁾ (i) = d(2 ⁿ i)	x ⁽⁰⁾(i+1)＝d(2 ⁿi+1) x ⁽⁰⁾ (i+1)=d(2 ⁿ i+1)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(2 ⁿi+3) x ⁽¹⁾ (i)=d(2 ⁿ i+3)	x ⁽¹⁾(i+1)＝d(2 ⁿi+2) x ⁽¹⁾ (i+1)=d(2 ⁿ i+2)

Among them, the phase of x ⁽⁰⁾ (i) in the first layer of transmission layer is 45° (or 225°, -135°), and the phase of x ⁽⁰⁾ (i+1) is 135° (or 315°, -45°), so the phase difference between x ⁽⁰⁾ (i) and x ⁽⁰⁾ (i+1) is 90°. The phase of x ⁽¹⁾ (i) in the layer 2 transmission layer is 135° (or 315°, -45°), and the phase of x ⁽¹⁾ (i+1) is 45° (or 225°, -135 °), so the phase difference between x ⁽¹⁾ (i) and x ⁽¹⁾ (i+1) is 90°, which meets condition 1 above. The phase difference between x ⁽⁰⁾ (i) in layer 1 transmission layer and x ⁽¹⁾ (i) in layer 2 transmission layer is 90°, and x ⁽⁰⁾⁽ i) in layer 1 transmission layer ( The phase difference between i+1) and x ⁽¹⁾ (i+1) in the second transmission layer is 90°, which meets the above condition 2. Therefore, the mapping method shown in Table 3-1 meets the above conditions 1 and 2, so it can guarantee the low PAPR characteristics of π/2 BPSK modulation, so two adjacent modulation symbols can be mapped to different transmission layers As shown above, a higher transmission rate is ensured.

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

Table 3-2

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(2 ⁿi+3) x ⁽⁰⁾ (i)＝d( ²ⁿ i+3)	x ⁽⁰⁾(i+1)＝d(2 ⁿi+2) x ⁽⁰⁾ (i+1)=d(2 ⁿ i+2)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(2 ⁿi) x ⁽¹⁾ (i) = d(2 ⁿ i)	x ⁽¹⁾(i+1)＝d(2 ⁿi+1) x ⁽¹⁾ (i+1)=d(2 ⁿ i+1)

Table 3-3

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(2 ⁿi+1) x ⁽⁰⁾ (i) = d(2 ⁿ i+1)	x ⁽⁰⁾(i+1)＝d(2 ⁿi) x ⁽⁰⁾ (i+1)=d(2 ⁿ i)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(2 ⁿi+2) x ⁽¹⁾ (i)=d(2 ⁿ i+2)	x ⁽¹⁾(i+1)＝d(2 ⁿi+3) x ⁽¹⁾ (i+1)=d(2 ⁿ i+3)

Table 3-4

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(2 ⁿi+2) x ⁽⁰⁾ (i)=d(2 ⁿ i+2)	x ⁽⁰⁾(i+1)＝d(2 ⁿi+1) x ⁽⁰⁾ (i+1)=d(2 ⁿ i+1)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(2 ⁿi+3) x ⁽¹⁾ (i)=d(2 ⁿ i+3)	x ⁽¹⁾(i+1)＝d(2 ⁿi) x ⁽¹⁾ (i+1)=d(2 ⁿ i)

Table 3-5

第1层传输层Layer 1 transport layer	x ⁽⁰⁾(i)＝d(2 ⁿi+2) x ⁽⁰⁾ (i)=d(2 ⁿ i+2)	x ⁽⁰⁾(i+1)＝d(2 ⁿi+3) x ⁽⁰⁾ (i+1)=d(2 ⁿ i+3)
第2层传输层Layer 2 transport layer	x ⁽¹⁾(i)＝d(2 ⁿi+1) x ⁽¹⁾ (i)=d(2 ⁿ i+1)	x ⁽¹⁾(i+1)＝d(2 ⁿi) x ⁽¹⁾ (i+1)=d(2 ⁿ i)

The above mapping methods shown in Table 3-2, Table 3-3, Table 3-4 and Table 3-5 all meet the above conditions 1 and 2, so the low PAPR characteristics of π/2 BPSK modulation can be guaranteed, that is, Mapping two adjacent modulation symbols on different transmission layers ensures a higher transmission rate as shown.

The above example 1 describes the implementation of directly mapping the modulation symbols to multiple transmission layers. In some feasible implementations, the modulation symbols may be processed to a certain extent before being mapped to multiple transmission layers.

In some possible implementations, two modulation symbols with a phase difference of 90° in Table 1-4 can also be multiplied by

That is, the corresponding phase is rotated by ±45°. Exemplarily, multiply d(4i+2) in Table 1-4 by

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

Get j or -1, that is, its phase is 90° or 180°, as shown in Table 4-1 below:

Table 4-1

Next, based on the foregoing two conditions, the foregoing modulation symbols can be mapped to the transmission layer, which will be described below with an example.

Example 2, when the number of layers of the transmission layer is 2, the modulation symbols shown in Table 4-1 or Table 4-2 are mapped to the 2-layer transmission layer. For example, the mapping method can be entered in the following Table 4-2 Shown:

Table 4-2

It should be noted that in the above Table 4-2, the phase difference between x ⁽⁰⁾ (i) and x ⁽⁰⁾ (i+1) in the first layer of the transmission layer is 45°, 90° or 135° , the phase difference between x ⁽¹⁾ (i) and x ⁽¹⁾ (i+1) in the second transmission layer is 45°, 90° or 135°, then the above condition 1 is met. The phase difference between x ⁽⁰⁾ (i) in the layer 1 transmission layer and x ⁽¹⁾ (i) in the layer 2 transmission layer is 45°, 90° or 135°, and the layer 1 transmission layer If the phase difference between x ⁽⁰⁾ (i+1) in and x ⁽¹⁾ (i+1) in the second transport layer is 45°, 90° or 135°, the above condition 2 is met. Therefore, the values in x ⁽⁰⁾ (i), x ⁽⁰⁾ (i+1), x ⁽¹⁾ (i) and x ⁽¹⁾ (i+1) can be exchanged with each other, as long as the resulting mapping conforms to The above conditions 1 and 2 are enough, and there is no limitation this time, so the low PAPR characteristics of π/2 BPSK modulation can be guaranteed, so two adjacent modulation symbols can be mapped on different transmission layers, as shown Guaranteed a high transfer rate.

Example 3, when the number of layers of the transmission layer is 4, various modulation symbols shown in Table 4-1 or Table 4-2 are mapped to the 4-layer transmission layer. For example, the mapping method can be entered in the following table 5 Shown:

table 5

Among them, the values in the above x ⁽⁰⁾ (i), x ⁽¹⁾ (i), x ⁽²⁾ (i), x ⁽³⁾ (i) can be interchanged, x ⁽⁰⁾ (i+1 ), x ⁽¹⁾ (i+1), x ⁽²⁾ (i+1), x ⁽³⁾ (i+1) can also be adaptively exchanged, and the above mapping method meets the aforementioned two conditions. , is not limited here.

Since the mapping method shown in Table 5 meets the above conditions 1 and 2, the low PAPR characteristics of π/2 BPSK modulation can be guaranteed, so two adjacent modulation symbols can be mapped on different transmission layers, As shown thus ensuring a higher transmission rate.

Example 4, when the number of layers of the transmission layer is 3, 2 modulation symbols among the 4 consecutive modulation symbols corresponding to the bits in the modulated first information can be processed so that the corresponding phases are rotated by 45° or - 45°, get the unprocessed 2 modulation symbols and the processed 2 modulation symbols, and then map any 3 modulation symbols among the unprocessed 2 modulation symbols and the processed 2 modulation symbols to the 3-layer transmission layer For any layer, the first information after layer mapping is obtained.

Exemplarily, the modulation symbols shown in Table 4-1 or Table 4-2 can be mapped to the 3-layer transmission layer. Exemplarily, the mapping method can be shown in the following Table 6:

Table 6

Among them, the values in the above x ⁽⁰⁾ (i), x ⁽¹⁾ (i), x ⁽²⁾ (i) can be from d(4i), d(4i+1),

and

Choose three of them, and their positions can also be exchanged arbitrarily, x ⁽⁰⁾ (i+1), x ⁽¹⁾ (i+1), x ⁽²⁾ (i+1) can also be obtained from d(4i) , d(4i+1),

and

Three of them are adaptively selected so that the above-mentioned mapping methods meet the above-mentioned two conditions, and there is no limitation here.

Therefore, the mapping method shown in Table 6 meets the above conditions 1 and 2, so the low PAPR characteristics of π/2 BPSK modulation can be guaranteed, so two adjacent modulation symbols can be mapped on different transmission layers , which ensures a higher transmission rate.

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

In the embodiment of the present application, the layer-mapped first information is obtained, and DFT precoding may be performed on the layer-mapped first information. Specifically, DFT transform is performed on the modulation symbols of each transmission layer in different transmission layers after layer mapping. When DFT precoding is performed, in addition to the modulation symbol corresponding to the first information after layer mapping, it may also include phase tracking reference signal (phase tracking reference signal, PTRS), demodulation reference signal (demodulation reference signal, DMRS) , channel sounding reference signal (sounding reference signal, SRS), physical uplink control channel (physical uplink control channel, PUCCH) and other corresponding symbols, which are not limited here.

204. Perform precoding on the DFT precoded first information to obtain precoded first information.

In the embodiment of the present application, after the DFT-precoded first information is obtained, the DFT-precoded first information may be precoded by using the precoded information. It should be noted that the precoding information can be a precoding matrix, the number of rows of the precoding matrix is equal to the number of transmitting antenna ports, the number of transmitting antenna ports is greater than or equal to 1, and the number of columns of the precoding matrix is equal to the number of transmission layer The number of layers, the codewords included in the precoding matrix are non-coherent codewords or coherent codewords.

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

It should be noted that, in order to ensure that the PAPR of the precoded first information remains unchanged, a non-coherent precoding matrix or a partially coherent precoding matrix can be used to precode the DFT precoded first information, so that it can be guaranteed There is no impact on PAPR in the case of multiple transport layers. In some possible implementation manners, the precoding may be multiple-in multiple-out (multiple-in multipleout, 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 DFT precoded first information is precoded according to the indicated precoding matrix. Alternatively, the precoding matrix corresponding to the first information may also be determined according to the precoding information on the SRS indicated by the SRS resource indication information indicated by the radio access network device or the core network device.

The following example illustrates.

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

or

or:

or

It should be noted that, for the mapping methods shown in Table 5, the precoding information (precoding matrix) may include at least one of the following:

or

It should be noted that, for the mapping methods shown in Table 6, the precoding information (precoding matrix) may include at least one of the following:

or

205. Perform OFDM waveform generation on the precoded first information to obtain the first information of the discrete Fourier transform extended orthogonal frequency division multiplexing DFT-s-OFDM waveform.

In the embodiment of this application, after obtaining the precoded first information, the OFDM waveform can be generated from the precoded first information to obtain the first information of the DFT-s-OFDM waveform, that is, each of the transmitting antenna ports The symbols on the transmitting antenna ports respectively generate OFDM waveforms to obtain the first information of the DFT-s-OFDM waveform.

Through the above steps 201-205, the signal processing of the first information is realized, and the processed first information is obtained.

206. Send the processed first information to the network device.

In this embodiment of the present application, the terminal device sends the first information of the DFT-s-OFDM waveform to the radio access network device, or the radio access network device sends the first information of the DFT-s-OFDM waveform to the core network device.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Depending on the application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In order to facilitate better implementation of the above solutions in the embodiments of the present application, related devices for implementing the above solutions are also provided below.

Please refer to FIG. 3, a communication device 300 provided in the embodiment of the present application 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 the processed first information. The signal processing includes π/2 binary phase shift keying BPSK modulation, layer mapping, discrete Fourier transform DFT precoding, 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 feasible implementation manners, the processing module 302 is specifically configured to:

Carry out π/2 BPSK modulation to the first information, obtain the first information after modulation, the number of layers of the transmission layer is greater than or equal to 2; Carry out layer mapping to the first information after modulation, obtain the first information after layer mapping; Perform DFT precoding on the first information after layer mapping to obtain the first information after DFT precoding; perform precoding on the first information after DFT precoding to obtain the first information after precoding; Generate the OFDM waveform with one piece of information to obtain the first information of the discrete Fourier transform extended orthogonal frequency division multiplexing DFT-s-OFDM waveform; the transceiver module 301 is specifically used for: sending the DFT-s-OFDM waveform to the network equipment first information.

In some feasible implementation manners, the number of transmission layers is 2, and the processing module 302 is specifically configured to: respectively map 4 consecutive modulation symbols corresponding to bits in the modulated first information to 2 transmission layers to obtain a layer The first information after mapping, wherein the first modulation symbol and the second modulation symbol of the 4 consecutive modulation symbols are mapped to the first layer of the 2-layer transmission layer in turn, and the fourth modulation symbol of the 4 modulation symbols The symbol and the 3rd modulation symbol are sequentially mapped into the 2nd layer of the 2-layer transmission layer.

Mapping the 4 consecutive modulation symbols corresponding to the bits in the modulated first information to 2 transmission layers respectively, to obtain the layer-mapped first information, wherein the first modulation symbol in the 4 consecutive modulation symbols and the second modulation symbol are sequentially mapped to the first layer of the two-layer transmission layer, and the third modulation symbol and the fourth modulation symbol among the four modulation symbols are sequentially mapped to the second layer of the two-layer transmission layer.

or

or

It should be noted that the information interaction and execution process between the modules/units of the above-mentioned device are based on the same concept as the method embodiment of the present application, and the technical effect it brings is the same as that of the method embodiment of the present application. The specific content can be Refer to the descriptions in the foregoing method embodiments of the present application, and details are not repeated here.

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

Next, another communication device provided by the embodiment of the present application is introduced. Referring to FIG. 4 , a communication device 400 includes: 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 through a bus or in other ways, wherein connection through a bus is taken as an example in FIG. 4 .

The memory 404 may include read-only memory and random-access memory, and provides instructions and data to the processor 403 . A part of the memory 404 may also include a non-volatile random access memory (non-volatile random access memory, NVRAM). The memory 404 stores operating systems and operating instructions, executable modules or data structures, or their subsets, or their extended sets, wherein the operating instructions may include various operating instructions for implementing various operations. The operating system may include various system programs for implementing various basic services and processing hardware-based tasks.

The processor 403 controls operations of the communication device, and the processor 403 may also be called a central processing unit (central processing unit, CPU). In a specific application, various components of the communication device are coupled together through a bus system, where the bus system may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, the various buses are referred to as bus systems in the figures.

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 403 or implemented by the processor 403 . The processor 403 may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 403 or an instruction in the form of software. The above-mentioned processor 403 may be a general-purpose processor, a digital signal processor (digital signal processing, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field-programmable gate array (field-programmable gate array, FPGA) or Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. 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 can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. 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 above method in combination with its hardware.

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

In the embodiment of the present application, the processor 403 is configured to execute the communication method executed by the aforementioned communication device.

In another possible design, when the communication device is a chip, it includes: a processing unit and a communication unit, the processing unit may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin or a circuit wait. The processing unit may execute the computer-executed instructions stored in the storage unit, so that the chip in the terminal executes the method for sending wireless report information according to any one of the above-mentioned first aspects. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (read -only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM), etc.

Wherein, the processor mentioned above can be a general-purpose central processing unit, microprocessor, ASIC, or one or more integrated circuits for controlling the program execution of the above method.

In addition, it should be noted that the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be A physical unit can be located in one place, or it can be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the device embodiments provided in the present application, the connection relationship between the modules indicates that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general-purpose hardware, and of course it can also be realized by special hardware including application-specific integrated circuits, dedicated CPUs, dedicated memories, Special components, etc. to achieve. In general, all functions completed by computer programs can be easily realized by corresponding hardware, and the specific hardware structure used to realize the same function can also be varied, such as analog circuits, digital circuits or special-purpose circuit etc. However, for this application, software program implementation is a better implementation mode in most cases. Based on this understanding, the essence of the technical solution of this application or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the method described in each embodiment of the present application .

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it 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 the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server, or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (Solid State Disk, SSD)), etc.

Claims

A communication method, characterized in that, comprising:

Perform signal processing on the first information to obtain the processed first information, the signal processing includes π/2 binary phase shift keying BPSK modulation, layer mapping, discrete Fourier transform DFT precoding, precoding and orthogonal frequency Division multiplexing OFDM waveform generation;

Send the processed first information to the network device.
The method according to claim 1, characterized in that,

The π/2 BPSK modulation includes:

Performing the π/2 BPSK modulation on the first information to obtain the modulated first information, the number of layers of the transmission layer is greater than or equal to 2;

The layer mapping includes:

performing the layer mapping on the modulated first information to obtain the first information after layer mapping;

The DFT precoding includes:

performing the DFT precoding on the layer-mapped first information to obtain the DFT precoded first information;

The precoding includes:

performing the precoding on the DFT precoded first information to obtain the precoded first information;

The OFDM waveform generation includes:

Performing the OFDM waveform generation on the precoded first information to obtain the first information of the discrete Fourier transform extended orthogonal frequency division multiplexing DFT-s-OFDM waveform;

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

Send the first information of the DFT-s-OFDM waveform to the network device.
The method according to claim 2, wherein the number of transmission layers is 2, the layer mapping is performed on the modulated first information, and the layer-mapped first information obtained includes:

respectively mapping 4 consecutive modulation symbols corresponding to bits in the modulated first information to 2 transmission layers to obtain the layer-mapped first information, wherein the 4 consecutive modulation symbols The first modulation symbol and the second modulation symbol of the 4 modulation symbols are sequentially mapped to the first layer of the 2-layer transmission layer, and the fourth modulation symbol and the third modulation symbol of the 4 modulation symbols are sequentially mapped to the Layer 2 of the transport layer.
The method according to claim 2, wherein the number of transmission layers is 2, the layer mapping is performed on the modulated first information, and the layer-mapped first information obtained includes:

Mapping 4 consecutive modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively, to obtain the layer-mapped first information, wherein the 4th modulation symbol in the 4 modulation symbols 1 modulation symbol and the 2nd modulation symbol are sequentially mapped to the first layer of the 2-layer transmission layer, and the 3rd modulation symbol and the 4th modulation symbol among the 4 modulation symbols are sequentially mapped to the 2nd layer In layer 2 of the transport layer.
The method according to any one of claims 1-4, wherein the precoded information includes at least one of the following:

or
The method according to any one of claims 1-4, wherein the precoded information includes at least one of the following:

or
A communication device, characterized by comprising:

A processing module, configured to perform signal processing on the first information to obtain the processed first information, the signal processing includes π/2 binary phase shift keying BPSK modulation, layer mapping, discrete Fourier transform DFT precoding, precoding Coding and Orthogonal Frequency Division Multiplexing OFDM waveform generation;

A transceiver module, configured to send the processed first information to a network device.
The communication device according to claim 7, wherein the processing module is specifically used for:

Performing the π/2 BPSK modulation on the first information to obtain the modulated first information, the number of layers of the transmission layer is greater than or equal to 2;

performing the layer mapping on the modulated first information to obtain the first information after layer mapping;

performing the DFT precoding on the layer-mapped first information to obtain the DFT precoded first information;

performing the precoding on the DFT precoded first information to obtain the precoded first information;

Performing the OFDM waveform generation on the precoded first information to obtain the first information of the discrete Fourier transform extended orthogonal frequency division multiplexing DFT-s-OFDM waveform;

The transceiver module is specifically configured to: send the first information of the DFT-s-OFDM waveform to the network device.
The communication device according to claim 8, wherein the number of transmission layers is 2, and the processing module is specifically used for:

respectively mapping 4 consecutive modulation symbols corresponding to bits in the modulated first information to 2 transmission layers to obtain the layer-mapped first information, wherein the 4 consecutive modulation symbols The first modulation symbol and the second modulation symbol of the 4 modulation symbols are sequentially mapped to the first layer of the 2-layer transmission layer, and the fourth modulation symbol and the third modulation symbol of the 4 modulation symbols are sequentially mapped to the Layer 2 of the transport layer.
The communication device according to claim 8, wherein the number of transmission layers is 2, and the processing module is specifically used for:

Mapping 4 consecutive modulation symbols corresponding to bits in the modulated first information to 2 transmission layers respectively, to obtain the layer-mapped first information, wherein the 4th modulation symbol in the 4 modulation symbols 1 modulation symbol and the 2nd modulation symbol are sequentially mapped to the first layer of the 2-layer transmission layer, and the 3rd modulation symbol and the 4th modulation symbol among the 4 modulation symbols are sequentially mapped to the 2nd layer In layer 2 of the transport layer.
The communication device according to any one of claims 7-10, wherein the precoded information includes at least one of the following:

or
The communication device according to any one of claims 7-10, wherein the precoded information includes at least one of the following:

or
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program, and the program causes a computer device to execute the method according to any one of claims 1-6.
A computer program product, characterized in that the computer program product includes computer-executable instructions stored in a computer-readable storage medium; at least one processor of the device reads from the computer-readable storage medium Taking the computer-executable instructions, execution of the computer-executable instructions by the at least one processor causes the device to perform the method according to any one of claims 1-6.
A communication device, characterized in that the communication device includes at least one processor, a memory, and a communication interface;

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

The memory is used to store instructions, the processor is used to execute the instructions, and the communication interface is used to communicate with other communication devices under the 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 according to any one of claims 1-6.
A chip system, characterized in that, the chip system includes a processor and a memory, the memory and the processor are interconnected by a line, instructions are stored in the memory, and the processor is used to execute claims 1- The method of any one of 6.