WO2024051628A1

WO2024051628A1 - Resource mapping method, apparatus, and communication device

Info

Publication number: WO2024051628A1
Application number: PCT/CN2023/116667
Authority: WO
Inventors: 袁璞; 刘昊
Original assignee: 维沃移动通信有限公司
Priority date: 2022-09-07
Filing date: 2023-09-04
Publication date: 2024-03-14
Also published as: CN117714251A

Abstract

Disclosed in the present application are a resource mapping method, an apparatus, and a communication device, belonging to the field of communications. The resource mapping method in the embodiments of the present application comprises: acquiring information bits and pilot information; performing code modulation on the information bits to obtain at least one modulation symbol block; and mapping the pilot information to a pilot delay-Doppler domain resource block, and according to the resource priority corresponding to the modulation symbol block, mapping to a matched candidate delay-Doppler domain resource block the at least one modulation symbol block, so as to obtain delay-Doppler signals corresponding to the information bits, the resource priority being positively correlated with a pilot distance, and the pilot distance being the distance between the candidate delay-Doppler domain resource block and the pilot delay-Doppler domain resource block.

Description

Resource mapping method, device and communication device

Cross-references to related applications

This application claims priority to the Chinese patent application filed with the China Patent Office on September 7, 2022, with application number 202211091585.3 and titled "Resource Mapping Method, Device and Communication Equipment", the entire content of which is incorporated into this application by reference. .

Technical field

The present application belongs to the field of communication technology, and specifically relates to a resource mapping method, device and communication equipment.

Background technique

In an orthogonal frequency division multiplexing (OFDM) multi-carrier system, the size of the sub-carrier spacing is limited. Therefore, in high-speed mobile scenarios, the larger relative speed between the transceiver and the receiver will lead to larger signal generation. The Doppler frequency shift destroys the orthogonality between sub-carriers and causes serious channel interference (Carrier Interference, ICI) between sub-carriers.

In related technology, orthogonal time and frequency space (OTFS) modulation technology can be used to reduce ICI between subcarriers. The first communication device maps the information bits and pilots into delayed Doppler domain signals, and then , based on the transceiver process of the OFDM system, the delayed Doppler domain signal is sent to the second communication device, and then the second communication device can restore the information bits and pilots. Since the delayed Doppler domain signal can directly reflect the channel delayed Doppler response characteristics caused by the geometric characteristics of the relative position of the transmitter and receiver, OTFS modulation technology can reduce the coupling interference between data samples and reduce the ICI between subcarriers.

Among them, OTFS uses a single-point pulse pilot and a guard interval design surrounding it, so that there is a sufficient guard interval between the pilot and the information bits, thereby avoiding mutual interference between the pilot and the information bits. However, this pilot signal structure will cause a large overhead, and if the pilot guard interval is reduced, some information bits close to the pilot will be interfered by the pilot, thus affecting the demodulation performance.

Contents of the invention

The embodiments of the present application provide a resource mapping method, device and first communication equipment, which can solve the problem that the pilot signal structure will cause a large overhead, and if the pilot guard interval is reduced, some information bits close to the pilot will be affected. Pilot interference affects demodulation performance.

In a first aspect, embodiments of the present application provide a resource mapping method, which method includes:

The first communication device acquires information bits and pilot information;

The first communication device performs encoding and modulation on the information bits to obtain at least one modulation symbol block;

The first communication device maps the pilot information to a pilot delay Doppler domain resource block, and maps the at least one modulation symbol block to a matching resource block according to the resource priority corresponding to the modulation symbol block. Candidate delays are much On the Puler domain resource block, the delayed Doppler signal corresponding to the information bit is obtained, wherein the resource priority is positively related to the pilot distance, and the pilot distance is the candidate delayed Doppler domain resource block. The distance between the Doppler domain resource blocks and the pilot delay.

In the second aspect, embodiments of the present application provide a resource mapping device, including:

Acquisition module, used to obtain information bits and pilot information;

A coding and modulation module, used to code and modulate the information bits to obtain at least one modulation symbol block;

A mapping module configured to map the pilot information to a pilot delay Doppler domain resource block, and map the at least one modulation symbol block to a matching resource block according to the resource priority corresponding to the modulation symbol block. On the candidate delayed Doppler domain resource block, the delayed Doppler signal corresponding to the information bit is obtained, wherein the resource priority is positively related to the pilot distance, and the pilot distance is the candidate delayed Doppler The distance between the domain resource block and the pilot delay Doppler domain resource block.

In a third aspect, a first communication device is provided. The first communication device includes a processor and a memory. The memory stores a program or instructions executable on the processor. The program or instructions are processed by the processor. When the processor is executed, the steps of the method described in the first aspect are implemented.

In a fourth aspect, a communication device is provided, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the first The steps of the method described in the aspect; wherein the communication device is a network side device or a terminal device.

In a fifth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. .

In a seventh aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the method described in the first aspect. Method steps.

In an eighth aspect, a transmission device/device is provided, wherein the device/device is (configured to) perform steps to implement the method as described in the first aspect.

In the embodiment of this application, information bits and pilot information are obtained; the information bits are coded and modulated to obtain at least one modulation symbol block; the pilot information is mapped to the pilot delay Doppler domain resource block, and the information bits are coded and modulated according to the modulation symbol The resource priority corresponding to the block maps at least one modulation symbol block to the matching candidate delayed Doppler domain resource block to obtain the delayed Doppler signal corresponding to the information bit, where the resource priority is positively related to the pilot distance. , the pilot distance is the distance between the candidate delayed Doppler domain resource block and the pilot delayed Doppler domain resource block.

In this way, based on the resource priority of the modulation symbol block, the modulation symbol block with a higher priority is mapped to the delayed Doppler domain resource block that is far away from the pilot information, thereby minimizing the interference between the pilot information and the information bits. Mutual interference to ensure that the second communication device can also demodulate the received delayed Doppler signal while reducing the pilot guard interval, thereby improving the transmission and demodulation performance of information bits.

Description of the drawings

Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is a step flow chart of a resource mapping method in this application;

Figure 3 is a schematic diagram of signal transmission of an OFDM-based OTFS system;

Figure 4 is a schematic diagram of a delayed Doppler domain resource mapping method;

Figure 5 is a schematic diagram of the mapping relationship between a coding code block and a candidate delayed Doppler domain resource block;

Figure 6 is a schematic diagram of the delayed Doppler domain;

Figure 7 is a structural diagram of a resource mapping device of the present application;

Figure 8 is a structural block diagram of a communication device in an embodiment of the present application;

Figure 9 is a structural block diagram of a terminal device in an embodiment of the present application;

Figure 10 is a structural block diagram of a network side device in an embodiment of the present application;

Figure 11 is a structural block diagram of a network side device in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (Long Term Evolution, LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code 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 (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and uses NR terminology in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th Generation , 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. Wireless communication system includes terminal 11 and network side equipment 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (PC), teller machines or self-service Terminal devices such as mobile phones, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may include an access network device or a core network device, where the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or Wireless access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmission Reception Point (TRP) or all Some other appropriate terminology in the above field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the base station in the NR system is used as an example for introduction, and The specific type of base station is not limited. Core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiment of this application, only the core network equipment in the NR system is used as an example for introduction, and the specific type of the core network equipment is not limited.

The resource mapping method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Referring to Figure 2, a step flow chart of a resource mapping method of the present application is shown, which may specifically include the following steps:

In step S11, the first communication device obtains information bits and pilot information.

In the OFDM multi-carrier system, in order to reduce the ICI between sub-carriers, OTFS modulation technology can be used. The first communication device maps the information bits and pilots into delayed Doppler domain signals. Then, based on the transceiver process of the OFDM system , sending the delayed Doppler domain signal to the second communication device.

As shown in Figure 3, it is a schematic diagram of the signal transmission of the OFDM-based OTFS system. In the first communication device, the precoder uses the inverse symplectic Fourier transform (ISFFT) to transmit the delayed Doppler domain signal x [k, l] is converted from the delayed Doppler domain to the time-frequency domain to obtain the time-frequency domain transmission signal X[m,n], and then the OFDM modulator is used to modulate the time-frequency domain signal to obtain the transmission signal s(t ), after the transmission of channel h(τ,v), the second communication device uses the OFDM demodulator to demodulate the received signal r(t) to obtain the time-frequency domain received signal Y[m,n], and then the decoder The symplectic Fourier transform (SFFT) is used to calculate the time-frequency domain received signal Y[m, n] to obtain the delayed Doppler domain received signal y[k, l], which is then passed through the delayed Doppler domain By performing channel estimation and equalization processing, we can obtain an estimate of the transmitted signal in the delayed Doppler domain.

The delayed Doppler domain signal includes information bits and pilot information. The information bits carry information that needs to be transmitted, including data information and/or control information, etc. The pilot information is advanced by both the first communication device and the second communication device. The agreed-upon known data provides a phase reference for the second communication device to perform channel estimation. In the OTFS system, in order to avoid mutual interference between pilot information and information bits, a sufficient guard interval needs to be left between the two. As shown in Figure 4, it is a delayed Doppler domain resource mapping method in an embodiment. The left side is the delayed Doppler domain transmission signal, in which the delayed Doppler domain resource block numbered 1 is used for mapping. The pilot delay Doppler domain resource block of a single-point pilot. The selected pilot resource block is surrounded by the guard interval delayed Doppler domain resource block. The unselected one is used for mapping information bits. Delayed Doppler domain resource block, where the location information of the pilot delayed Doppler domain resource block can be expressed as (l _p , k _p ), and the area of the guard interval delayed Doppler domain resource block can be expressed as (2l _r +1)(4k _v +1)-1, the area of the delayed Doppler domain resource block used to map information bits can be expressed as MN-(2l _r +1)(4k _v +1); the right side is the delayed Doppler domain resource block The signal is received in the Puler domain, and the delayed Doppler domain resource block numbered 2 is the two offset peaks that appear in the guard interval resource block. Among them, the number of resource block columns M in the delayed Doppler domain determines the delay resolution of the system, and the number of rows N determines the Doppler resolution of the system. The sizes of M and N can be designed according to user needs. When M and N When it is not large enough, there will be off-grid interference caused by quantization errors between delayed Doppler domain resource blocks.

The appearance of the offset peak means that in addition to the main path, there are two secondary paths with different delay Dopplers in the channel. By measuring the amplitude, delay and Doppler parameters of the secondary paths, the delay of the channel can be obtained Doppler domain expression, thereby reducing the mutual interference between pilot information and information bits, and improving the accuracy of channel estimation. In this resource mapping method, if the guard interval delay Doppler domain resource blocks are not set or there are fewer guard interval delay Doppler domain resource blocks, then these two offset peaks will affect the pilot delay Doppler domain. Delayed Doppler domain resource blocks near resource blocks cause pollution. However, guard interval delayed Doppler domain resource blocks will occupy a large overhead. Therefore, this resource mapping method needs to be improved.

In this embodiment of the present application, the first communication device may be the access network device in Figure 1, such as a base station or a newly defined artificial intelligence processing node on the access network side, or it may be the terminal device in Figure 1, or it may be The core network equipment in Figure 1, such as Network Data Analytics Function (NWDAF) and positioning management function (Location Management Function, LMF), or a newly defined processing node on the core network side, or a combination of multiple nodes mentioned above. The first communication device can obtain information bits through various methods such as data collection and collection. The information bits are data that need to be transmitted, and can be image data, audio data, video data or text data, etc., and are not specifically limited.

In step S12, the first communication device performs coding and modulation on the information bits to obtain at least one modulation symbol block.

In this step, the information bits can be coded and modulated, and the information bits can be processed into at least one modulation symbol block, where the modulation symbol block corresponds to the resource priority. The resource priority can reflect the importance of the modulation symbol block. The resource priority Modulation symbol blocks with a high resource priority have a high degree of importance, while modulation symbol blocks with a low resource priority have a low degree of importance and may contain more redundant information.

In one implementation, the step of encoding and modulating the information bits to obtain at least one modulation symbol block may include: performing source encoding on the information bits to obtain at least one source code block, and the source code block has the first priority; according to The first priority is to determine the coding and modulation parameters corresponding to the source code block; based on the determined coding and modulation parameters, the source code block is coded and modulated to obtain at least one modulation symbol block. The resource priority corresponding to the modulation symbol block is the same as the first priority. levels are positively related.

That is to say, after obtaining the information bits, it is necessary to perform source coding on the information bits to obtain the source code blocks, thereby reducing redundant information in the information bits and improving the anti-interference ability during transmission. Then, source code blocks with different first priorities can be coded and modulated using different coding and modulation parameters, thereby reflecting the resource priorities corresponding to different modulation symbol blocks, where the coding and modulation parameters can include channel coding parameters and modulation parameters, The channel coding parameters may include code rates and/or cyclic redundancy check (CRC) check bits of different lengths, and the modulation parameters may include modulation orders, etc., and are not specifically limited.

For example, if the information bits are image data, then a source coding method based on wavelet changes can be used to process the image data into multiple source code blocks, where the first source code block with a higher priority corresponds to the image The essential layer information of the data, which presents the basic content of the image data, but has less detailed information, such as lower color depth, lower resolution, etc.; while the first lower priority information The source code block corresponds to the residual layer information of the image data and has more detailed information; when displaying the image data, it can be presented in order from the basic layer information to the residual layer information, and the order is the displayed Images add more details. Alternatively, if the information bits are video data, then the first source code block with a higher priority may correspond to a key frame in the video data, and the first source code block with a lower priority may correspond to a reference frame in the video data. ;Wait, there is no specific limit.

In this way, when the channel capacity is limited, only part of the source code blocks with a higher first priority can be encoded, modulated and transmitted to meet the basic needs of the business. For example, only the basic layer information of image data can be processed. and a small amount of source code blocks corresponding to the residual layer information, providing limited detail image information; when the channel capacity is high, all source code blocks can be processed, thus providing flexible options for information transmission and improving communication flexibility. and adaptability to the scene.

For example, according to the first priority, the step of determining the coding modulation parameters corresponding to the source code block may include: According to the first priority, the channel coding parameters and modulation parameters corresponding to the source code block are determined.

Among them, the channel coding parameters are used to channel code the source code blocks, and the modulation parameters are used to modulate the source code blocks after channel coding. The channel coding uses correction and error detection technology to process the source code blocks to obtain diversity. Gain to combat the effects of channel fading, enhance the ability to withstand various interferences when data is transmitted in the channel, and improve system reliability. After obtaining the source code blocks with different first priorities, the channel coding parameters and modulation parameters corresponding to each first priority can be determined, and then the source code blocks are channel coded based on the channel coding parameters, and then based on the modulation parameters. Modulation, that is to say, perform channel coding and modulation with different parameters on different source code blocks according to different first priorities to obtain modulation symbol blocks. Since the channel coding parameters and modulation parameters correspond to different first priorities, Then, the resource priority corresponding to the obtained modulation symbol block is positively related to the first priority, thereby avoiding the situation where the modulation symbol blocks obtained after coding and modulating using the same set of coding modulation parameters cannot distinguish the priorities.

For example, for source code blocks with a higher first priority, a lower code rate can be used for channel coding, that is, more redundant bits are added during channel coding to ensure reliability; for source codes with a lower first priority block, you can use a higher code rate and add fewer redundant bits during channel coding.

In an implementation manner, the step of the first communication device determining the coding modulation parameters corresponding to the source code blocks according to the first priority may include: the first communication device respectively determines the channel coding corresponding to the source code blocks with different first priorities. Parameters and modulation parameters, that is to say, each first priority can correspond to different channel coding parameters and modulation parameters respectively. Source code blocks with the same first priority use the same channel coding parameters and modulation parameters for coding and modulation. Source code blocks with different first priorities use different channel coding parameters and modulation parameters for coding and modulation; or, the first communication device, according to the order from high to low first priorities, combines at least one adjacent first priority The two source code blocks are divided into one group, and the channel coding parameters and modulation parameters corresponding to each group of source code blocks are determined respectively. That is to say, the source code blocks with similar first priorities can be grouped into one group. For example, if There are four first priorities. Then, the two higher first priorities can be divided into one group, and the two lower first priorities can be divided into another group. Then, the first priority of each group can be determined separately. The channel coding parameters and modulation parameters corresponding to the source code blocks corresponding to the first level. In this way, the source code blocks with similar first priority use the same channel coding parameters and modulation parameters for coding and modulation, and the number of modulation symbol blocks will be less than the source code blocks. The number can obtain the gain brought by the increase in code length.

Or, in another implementation manner, the step of encoding and modulating the information bits to obtain at least one modulation symbol block may include: performing source encoding on the information bits to obtain at least one source code block, and the source code block has a second priority; determine the channel coding parameters corresponding to the source code block according to the second priority; perform channel coding on the source code block based on the determined channel coding parameters to obtain at least one coded code block, and the coded code block has the third priority , the third priority is positively related to the second priority; according to the third priority, the modulation parameters corresponding to the encoding code block are determined; based on the determined modulation parameters, the encoding code block is modulated to obtain at least one modulation symbol block, modulation The resource priority corresponding to the symbol block is positively related to the third priority.

That is to say, source code blocks with different second priorities can be channel coded using different channel coding parameters to obtain coded code blocks with different third priorities. Then, the modulation parameters corresponding to each third priority are determined. , And perform modulation based on the modulation parameters to obtain a modulation symbol block. Then, the obtained modulation symbol block has a resource priority. The resource priority is positively related to the third priority, and the third priority is positively related to the second priority. Then the resource priority is Level and second priority are also positively related. The methods used for channel coding and modulation are the same as those in the previous embodiments and will not be described again here.

Wherein, the step of the first communication device determining the channel coding parameters corresponding to the source code blocks according to the second priority may include: the first communication device respectively determining the channel coding parameters corresponding to the source code blocks with different second priorities; or, The first communication device divides at least two source code blocks adjacent to the second priority into one group according to the order of the second priority from high to low, and determines the channel coding parameters corresponding to each group of source code blocks. The step of the first communication device determining the modulation parameters corresponding to the encoded code blocks according to the third priority may include: the first communication device respectively determining the modulation parameters corresponding to the encoded code blocks of different third priorities; or, the first communication device According to the order of the third priority from high to low, at least two code blocks adjacent to the third priority are divided into one group, and the modulation parameters corresponding to each group of code blocks are determined respectively.

That is to say, each second priority can correspond to different channel coding parameters respectively. Source code blocks with the same second priority use the same channel coding parameters for channel coding, or the process of channel coding the source code blocks. In , the source code blocks that are similar to the second priority can be combined for channel coding. In this case, the number of coding code blocks will be less than the number of source code blocks, thereby obtaining the gain brought by the increase in code length; similarly, Each third priority level can correspond to different modulation parameters respectively. Coded code blocks with the same third priority level are modulated using the same modulation parameters. Alternatively, in the process of modulating the coded code blocks, the third priority level is approximated. The encoding code blocks can also be combined for modulation. In this case, the number of modulation symbol blocks will be less than the number of encoding code blocks, thereby obtaining the gain brought by the increase in code length.

For example, the source coding methods used in this application may include, but are not limited to, Shannon coding, Huffman coding, and run-length coding; the channel coding methods may include, but are not limited to, block coding, convolutional coding, and low-density parity check codes. (Low Density Parity Check Code, LDPC) coding, CRC coding; modulation methods may include but are not limited to Quadrature Amplitude Modulation (QAM) modulation, Quadrature Phase Shift Keying (QPSK) modulation, residual Sideband (vestigial sideband, VSB) modulation or coded orthogonal frequency division multiplexing (Coded Orthogonal Frequency Division Multiplexing, COFDM) modulation, etc., can be set according to needs, and there are no specific restrictions.

In step S13, the first communication device maps the pilot information to the pilot delay Doppler domain resource block, and maps at least one modulation symbol block to a matching candidate delay according to the resource priority corresponding to the modulation symbol block. On the Doppler domain resource block, the delayed Doppler signal corresponding to the information bit is obtained, where the resource priority is positively related to the pilot distance, and the pilot distance is the candidate delayed Doppler domain resource block and the pilot delayed Doppler The distance between domain resource blocks.

In this step, after at least one modulation symbol block is obtained, the obtained pilot information can be mapped to the pilot delay Doppler domain resource block, and the modulation symbol block can be mapped to a candidate delay that matches its resource priority. On the Doppler domain resource block, the pulse in each delayed Doppler domain resource block is modulated with a single-point pilot or modulation symbol block to obtain a delayed Doppler signal corresponding to the information bit. Among them, resource priority is positively related to pilot distance, that is to say, The farther the candidate delayed Doppler domain resource block is from the pilot delayed Doppler domain resource block, the higher the resource priority of the mapped modulation symbol block. On the contrary, the closer to the pilot delayed Doppler domain resource block, the higher the resource priority. For candidate delayed Doppler domain resource blocks, the resource priority of the mapped modulation symbol block is lower.

In this way, the modulation symbol block with higher resource priority is mapped to the candidate delayed Doppler domain resource block that is farther from the pilot delayed Doppler domain resource block, so that in the delayed Doppler domain, the resource priority is higher. Modulation symbol blocks with high resource priority are far away from pilot information and are less susceptible to interference; correspondingly, modulation symbol blocks with lower resource priority are closer to pilot information and are more likely to be subject to pilot interference; in When the guard interval between pilot information and information bits is reduced or eliminated, modulation symbol blocks with higher resource priority can still be transmitted to the second communication device without interference, while modulation symbol blocks with lower resource priority can still be transmitted to the second communication device without interference. The information bits carried by the modulation symbol block are of low importance. Even if interference is received, the impact on the second communication device's restoration of the information bits will be small, thereby improving the transmission efficiency of the information bits.

In one implementation, the step of mapping information bits and pilot information by the first communication device may include: randomly determining pilot delayed Doppler domain resource blocks from the delayed Doppler domain, and mapping the pilot information to the pilot information. on the frequency delay Doppler domain resource block; according to the pilot distance resource priority between the candidate delay Doppler domain resource block and the pilot delay Doppler domain resource block, the modulation symbol block is mapped to the matching candidate delay On the Doppler domain resource block, the delayed Doppler signal corresponding to the information bit is obtained, where the candidate delayed Doppler domain resource block is other than the pilot delayed Doppler domain resource block in the delayed Doppler domain. Delayed Doppler domain resource block.

That is to say, the pilot information is first randomly mapped to the delayed Doppler domain resource blocks in the delayed Doppler domain, and then, based on the mapping position of the pilot information, other delayed Dopplers in the delayed Doppler domain are determined. pilot distance of domain resource blocks, and these delayed Doppler domain resource blocks with no pilot information mapped are used as candidate delayed Doppler domain resource blocks, and then the modulation symbol blocks are mapped to pilot distances consistent with the resource priority. On the matched candidate delayed Doppler domain resource block, a delayed Doppler signal corresponding to the information bit is obtained. In this way, the resource mapping method provided by this application is more flexible.

Alternatively, you can also perform functional design on the resource blocks in the delayed Doppler domain in advance, determine the functional configuration and matching resource priority of each delayed Doppler domain resource block, and perform resource mapping based on the functional configuration information. , directly map the pilot information to the preset pilot delay Doppler domain resource block, directly obtain the corresponding resource priority of each candidate delay Doppler domain resource block, and map the modulation symbol block to its resource On the candidate delayed Doppler domain resource blocks with matching priorities, a delayed Doppler signal corresponding to the information bit is obtained.

In other words, the candidate delayed Doppler domain resource block can be divided into two parts. The first part is far away from the position of the pilot delayed Doppler domain resource block and has a low possibility of being interfered by the pilot, that is, the pilot in the traditional scheme and the delayed Doppler domain resource blocks outside the pilot guard interval. This part of the delayed Doppler domain resource blocks will be allocated to modulation symbol blocks with higher resource priority; the second part is the adjacent pilot delayed Doppler domain. The location of the resource block is a delayed Doppler domain resource block that may be subject to pilot interference, that is, the delayed Doppler domain resource block occupied by the pilot guard interval in the traditional solution. This part of the delayed Doppler domain resource block will are allocated to modulation symbol blocks with lower resource priority, thereby flexibly matching and optimizing channel capacity and transmission information size.

In this step, candidate delay DOPs whose pilot distance matches the resource priority of any modulation symbol block are determined. The Doppler domain resource block can be based on the corresponding relationship between the pilot distance and the resource priority. The candidate delayed Doppler domain resource block with the largest pilot distance matches the modulation symbol block with the highest resource priority, and the second largest pilot distance The candidate delayed Doppler domain resource blocks match the modulation symbol block with the second highest resource priority, and so on; alternatively, the candidate delayed Doppler domain resource blocks can also be partitioned according to the pilot distance, and the pilot distances are close to each other. The candidate delayed Doppler domain resource block is used as a partition to obtain at least two partitions. For example, if the candidate delayed Doppler domain resource block can be divided into two partitions and the resource priority is divided into four levels, then, it can be The two modulation symbol blocks with higher resource priority are divided into the first group, and the two modulation symbol blocks with lower resource priority are divided into the second group. The first group matches the candidate delay DOP with larger pilot distance. Doppler domain resource block partition, then the group of modulation symbol blocks can be mapped to any candidate delayed Doppler domain resource block in the partition, and the second group matches the candidate delayed Doppler domain resource block partition with a smaller pilot distance, Then the group of modulation symbol blocks can be mapped to any candidate delayed Doppler domain resource block in the partition, etc., without specific limitations.

For example, as shown in Figure 5, it is a schematic diagram of the mapping relationship between encoded code blocks and candidate delayed Doppler domain resource blocks. Assume that after the information bits are source coded, there are L source code blocks. The source code blocks have different second priorities. The source code blocks with similar second priorities can be combined for channel coding to become P codes required for communication. Code blocks, where L≥P, encode code blocks with different third priorities. Coded code blocks with similar third priority levels can be combined for modulation to obtain Q modulation symbol blocks, where P≥Q, and the modulation symbol blocks have different resource priorities. Furthermore, the modulation symbol block is mapped to the candidate delayed Doppler domain resource block to obtain a delayed Doppler domain signal.

As shown in Figure 6, it is a schematic diagram of a delayed Doppler domain, including M×N delayed Doppler domain resource blocks. The delayed Doppler domain resource block numbered 1 is used to map single-point pilots. The position information of the pilot delayed Doppler domain resource block can be expressed as (l _p , k _p ), and the area around the pilot delayed Doppler domain resource block is located in the abscissa range [l _p -lτ, l _p +l _τ ] and the candidate delayed Doppler domain resource blocks within the ordinate range [k _p -k _v , k _p +k _v ] completely coincide with the pilot interference range and are likely to be subject to pilot interference, therefore, these are not partitioned The pilot distance of the candidate delayed Doppler domain resource blocks is small, and the pilot distance of the remaining candidate delayed Doppler domain resource blocks is large. Among them, leakage interference of some pilots also exists outside the candidate delayed Doppler domain resource blocks that have not been partitioned, and the amount of interference decreases as the distance from the pilot increases. Therefore, the rest can be Candidate delayed Doppler domain resource blocks with larger pilot distances are further classified according to their pilot distances. For example, candidate delayed Doppler domain resource blocks in the D region have the farthest pilot distance and the corresponding resource priority is the highest; The pilot distance of the candidate delayed Doppler domain resource blocks in area C is relatively close, and the corresponding resource priority is only higher than the candidate delayed Doppler domain resource blocks that are not partitioned around the pilot delayed Doppler domain resource blocks; The pilot distance of candidate delayed Doppler domain resource blocks in area B and area A is far, and the corresponding resource priority is higher than that of candidate delayed Doppler domain resource blocks in area C, but lower than that of candidate delayed Doppler domain resource blocks in area D. Doppler domain resource block.

In this application, the information bits may include data information, or the information bits may include control information, or the information bits may also include data information and control information, where the resource priority corresponding to the modulation symbol block corresponding to the control information is higher than that of the data The resource priority of the modulation symbol block corresponding to the information.

Then, in one implementation, the step of mapping at least one modulation symbol block to a matching candidate delayed Doppler domain resource block to obtain a delayed Doppler signal corresponding to the information bit may specifically include: mapping the control information to The corresponding modulation symbol block is mapped to the candidate delay Doppler domain resource block whose pilot distance meets the preset conditions, and the modulation symbol block is mapped to the matching unmapped candidate delay Doppler domain according to the resource priority. On the resource block, the delayed Doppler signal corresponding to the information bit is obtained.

That is to say, in a scenario where there is control information, candidate delayed Doppler domain resource blocks whose pilot distances meet preset conditions are allocated to the control information. Usually, before parsing the information bits, it is necessary to use the control information transmitted in the control channel. Using the above method, the control information is mapped to the candidate delayed Doppler domain resource blocks whose pilot distance meets the preset conditions, which can further improve the control channel. reliability. Among them, the candidate delayed Doppler domain resource blocks whose pilot distances meet the preset conditions can be the candidate delayed Doppler domain resource blocks that are ranked in the top few by pilot distances from high to low, or they can also be the pilot distances. The largest candidate delayed Doppler domain resource block may also be a candidate delayed Doppler domain resource block whose pilot frequency distance is higher than the preset distance, etc., and is not specifically limited.

In this application, when the information bits include data information and control information, after obtaining the delayed Doppler signal corresponding to the information bit, the delayed Doppler signal can be transmitted, and the delayed Doppler signal can be transmitted to the second Communication equipment, so that the second communication equipment decodes the delayed Doppler signal according to the control information to obtain information bits; where the control information can be uplink control information (UCI) or downlink control information (Downlink Control Information (DCI), the control information includes coding modulation parameters for decoding the delayed Doppler signal, or the control information includes a first index, the first index is used to allocate all parameters in the preset protocol or physical resource control information. Query the above coding modulation parameters. That is to say, the coding modulation parameters can be directly indicated through the control information, or preset through the protocol, or the physical resource control information indicates a set of optional values of the coding modulation parameters, and then the control information indicates the index of the coding modulation parameters. In this way, According to the index, the corresponding coding and modulation parameters can be queried in the protocol preset or physical resource control information. The encoding modulation parameters may include code rate, CRC check bits, and modulation order. In addition, they may also indicate the mapping relationship between the source code block and the encoding code block.

Among them, in the process of mapping modulation symbol blocks to matching delayed Doppler domain resource blocks, delayed Doppler domain resource blocks with the same pilot distance map modulation symbol blocks with different resource priorities. In this case , the step of the first communication device transmitting the delayed Doppler signal to the second communication device may include: the first communication device determines the transmit power of each modulation symbol block according to the resource priority, and the transmit power is consistent with the resource priority. Positive correlation; the first communication device transmits the delayed Doppler signal corresponding to the modulation symbol block to the second communication device based on the transmission power of the modulation symbol block. Among them, the transmit power can be an absolute power value (dBm), or a relative value (dB) relative to a certain power value. That is to say, the delayed Doppler signal corresponding to the modulation symbol block with a higher resource priority can use a higher delay Doppler signal. Transmit with high power, the delayed Doppler signal corresponding to the modulation symbol block with lower resource priority can be transmitted with smaller power, so that modulation symbol blocks with different resource priorities can be reflected according to different transmission power, further reducing signal interference. .

In an implementation manner, the first communication device may also transmit physical resource control information to the second communication device, where the physical resource control information includes reference information, or the control information includes a second index, and the second index is used for Reference information is queried in the preset protocol or physical resource control information; the reference information includes location information of the candidate delayed Doppler domain resource blocks and the correspondence between the candidate delayed Doppler domain resource blocks and the modulation symbol blocks.

In this way, the second communication device can decode the received delayed Doppler signal based on the reference information to obtain an estimate of the modulation symbol block, and then restore the information bits based on the coded modulation parameters. When decoding the delayed Doppler signal During the process, it is necessary to obtain the position information of the delayed Doppler domain resource block and the correspondence between the delayed Doppler domain resource block and the modulation symbol block, that is, reference information. Since the reference information has a large amount of information, the information carried by the control information The amount is limited, therefore, the reference information is transmitted directly through the physical resource control information, or the second index is transmitted through the control information.

For example, the location information may include at least one of the following: a delay domain location of the candidate delayed Doppler domain resource block; a Doppler domain location of the candidate delayed Doppler domain resource block; a relationship between the candidate delayed Doppler domain resource block and The offset between preset reference points; the delay domain offset between the candidate delayed Doppler domain resource block and the preset reference point; the Doppler between the candidate delayed Doppler domain resource block and the preset reference point Domain offset; the resource size occupied by the candidate delayed Doppler domain resource block; where the preset reference point is the delayed Doppler domain resource block corresponding to the pilot delayed Doppler domain resource block or the protection area of the pilot information. any point.

That is to say, assuming that the Doppler signal is abstracted into a two-dimensional space with Doppler as the abscissa and delay as the ordinate, the delayed Doppler domain resource block can be a polygon, then the position information can be The coordinate value of each vertex of the polygon relative to the preset reference point in the delayed Doppler domain; or the coordinate value of a certain reference point within the polygon, such as an endpoint or center point, relative to the delayed Doppler domain resource block. The position of a reference point within the pilot or pilot and its protection area, the offset value in the two dimensions of delay and Doppler, and the resource size occupied by the polygon.

It can be seen from the above that the technical solution provided by this application is based on the resource priority of the modulation symbol block, and maps the modulation symbol block with a higher priority to the delayed Doppler domain resource block that is far away from the pilot information, so as to maximize the Reduce the mutual interference between pilot information and information bits. Even when the pilot guard interval is reduced, the second communication device can demodulate the received delayed Doppler signal, thereby improving the transmission and accuracy of information bits. Demodulation performance.

In order to facilitate understanding, the resource mapping method of this application is described below in several specific implementation modes.

In a specific embodiment of the present application, the following steps are included:

Step 1: Perform source coding on the information bits to obtain L source code blocks, each of which has a second priority.

Step 2: Perform channel coding on L source code blocks. Each source code block can be given different channel coding parameters according to the second priority. The channel coding parameters include CRC check digits and coding efficiency. After channel coding, P code blocks are obtained, and the code blocks have the third priority.

Step 3: Modulate the P code blocks, wherein each code block can be given different modulation parameters according to the third priority, and the modulation parameters can be modulation orders, etc. During the modulation process, coding code blocks with similar third priorities can be jointly modulated to obtain Q modulation symbol blocks, and the resource priority corresponding to each modulation symbol block is positively related to the third priority.

Step 4: Map Q modulation symbol blocks to Q candidate delayed Doppler domain resource blocks, where the resource priority of the modulation symbol block is positively related to the pilot distance of the delayed Doppler domain resource block, and the pilot distance That is, the candidate delay The distance between Doppler domain resource blocks and pilot delay Doppler domain resource blocks. In one implementation, for modulation symbol blocks with different resource priorities mapped to delayed Doppler domain resource blocks of the same pilot distance, if the priorities need to be further subdivided, different transmit powers can be used for differentiation.

Further, steps two and three in the above implementation can be combined into one step, resulting in the following embodiment:

Step 1: Perform source coding on the information bits to obtain L source code blocks, each of which has the first priority.

Step 2: Perform channel coding and modulation on the L source code blocks. Each source code block can be given different channel coding parameters and modulation parameters according to the first priority. The channel coding parameters include CRC check digits. As well as coding efficiency, the modulation parameters can be modulation orders, etc. After channel coding and modulation, Q modulation symbol blocks are obtained, and the resource priority corresponding to each modulation symbol block is positively related to the first priority.

Step 3: Map Q modulation symbol blocks to Q candidate delayed Doppler domain resource blocks, where the resource priority of the modulation symbol block is positively related to the pilot distance of the candidate delayed Doppler domain resource blocks. In one implementation, for modulation symbol blocks with different resource priorities mapped to candidate delayed Doppler domain resource blocks at the same pilot distance, if the priorities need to be further subdivided, different transmit powers can be used to distinguish them. .

In addition, the delayed Doppler domain resource hierarchical mapping method provided by this application can not only be used in source channel coding scenarios, but can also be used to improve the mapping method of control and data channels in existing systems. Specifically, in a scenario where the control information of the control channel and the information bits of the data channel are mapped in the same delayed Doppler domain, in addition to giving the control information better transmission reliability by distinguishing the coding and modulation methods, it can also be used In the scenario where control information exists, candidate delayed Doppler domain resource blocks whose pilot distances meet preset conditions are always allocated to the control information, thereby further improving the control channel by giving control information better candidate delayed Doppler domain resources. reliability.

In the above embodiment, the signaling interaction method may be further defined. For example, the first communication device needs to indicate to the second communication device the mapping relationship between the source code blocks and the encoding code blocks and the channel coding parameters, and also needs to indicate the modulation parameters. Then, the first communication device can communicate with the second communication device by The device transmits uplink or downlink control information to indicate directly, or it can also indicate a set of optional values in the protocol default or physical resource control (Radio resource control, RRC) information. The uplink or downlink control information indicates the first index, and the first index is indicated by the uplink or downlink control information. The second communication device can query among the optional values according to the first index.

In addition, the first communication device also needs to indicate the corresponding relationship between each modulation symbol block and each candidate delayed Doppler domain resource block, as well as the location of the candidate delayed Doppler domain resource block. If modulation symbol blocks with different resource priorities are If different transmit powers are allocated, the transmit power corresponding to each modulation symbol block also needs to be indicated. Then, the first communication device can directly indicate through RRC, or it can also indicate a set of optional values in the protocol preset or RRC information, and the second index is indicated by the uplink or downlink control information, and the second communication device can indicate according to the second The index is queried on optional values.

The location information includes at least one of the following:

The delay domain position of the candidate delayed Doppler domain resource block;

The Doppler domain position of the candidate delayed Doppler domain resource block;

The offset between the candidate delayed Doppler domain resource block and the preset reference point;

The delay domain offset between the candidate delay Doppler domain resource block and the preset reference point;

The Doppler domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

The resource size occupied by the candidate delayed Doppler domain resource block;

The preset reference point is any point in the pilot delayed Doppler domain resource block or the delayed Doppler domain resource block corresponding to the protection area of the pilot information.

For the resource mapping method provided by the embodiment of the present application, the execution subject may be a resource mapping device. In the embodiment of the present application, the method of performing resource mapping by the resource mapping device is taken as an example to illustrate the resource mapping device provided by the embodiment of the present application.

As shown in Figure 7, it is a structural diagram of a resource mapping device of the present application. The present application provides a resource mapping device, including:

Acquisition module 201 is used to acquire information bits and pilot information;

Coding and modulation module 202, used to perform coding and modulation on the information bits to obtain at least one modulation symbol block;

Mapping module 203, configured to map the pilot information to a pilot delay Doppler domain resource block, and map the at least one modulation symbol block to a matching resource block according to the resource priority corresponding to the modulation symbol block. On the candidate delayed Doppler domain resource blocks, the delayed Doppler signal corresponding to the information bit is obtained, wherein the resource priority is positively related to the pilot distance, and the pilot distance is the candidate delayed Doppler The distance between the Doppler domain resource block and the pilot delay Doppler domain resource block.

In one implementation, the coding and modulation module 202 is specifically used to:

Perform source coding on the information bits to obtain at least one source code block, where the source code block has a first priority;

According to the first priority, determine the coding modulation parameters corresponding to the source code block;

Based on the determined coding and modulation parameters, the corresponding source code block is coded and modulated to obtain at least one modulation symbol block, and the resource priority corresponding to the modulation symbol block is positively related to the first priority.

According to the first priority, the channel coding parameters and modulation parameters corresponding to the source code block are determined.

The first communication device determines the channel coding parameters and modulation corresponding to the source code blocks of different first priorities respectively. parameters; or,

The first communication device divides at least two source code blocks adjacent to the first priority into one group according to the order of the first priority from high to low, and determines the corresponding source code blocks of each group respectively. channel coding parameters and modulation parameters.

Perform source coding on the information bits to obtain at least one source code block, where the source code block has a second priority;

According to the second priority, determine the channel coding parameters corresponding to the source code block;

Based on the determined channel coding parameters, perform channel coding on the corresponding source code block to obtain at least one coded code block. The coded code block has a third priority, and the third priority is the same as the second priority. positive correlation;

According to the third priority, determine the modulation parameters corresponding to the encoded code block;

Based on the determined modulation parameters, the encoding code block is modulated to obtain at least one modulation symbol block, and the resource priority corresponding to the modulation symbol block is positively related to the third priority.

The first communication device determines channel coding parameters corresponding to source code blocks of different second priorities respectively; or,

The first communication device divides at least two source code blocks adjacent to the second priority into one group according to the order of the second priority from high to low, and determines the information corresponding to each group of source code blocks respectively. Channel coding parameters;

The first communication device determines the modulation parameters corresponding to the encoding code block according to the third priority, including:

The first communication device determines the modulation parameters corresponding to the encoding code blocks of different third priorities respectively; or,

The first communication device divides at least two encoding code blocks adjacent to the third priority into one group according to the order from high to low of the third priority, and determines the corresponding encoding code blocks of each group respectively. modulation parameters.

In one implementation, the information bits include data information, or the information bits include: control information, or the information bits include: data information and control information,

Wherein, the resource priority corresponding to the modulation symbol block corresponding to the control information is higher than the resource priority corresponding to the modulation symbol block corresponding to the data information.

In one implementation, when the information bits include data information and control information, the device further includes:

A transmission module configured to transmit the delayed Doppler signal to a second communication device, so that the second communication device decodes the delayed Doppler signal according to the control information to obtain the information bits; Wherein, the control information includes coding modulation parameters for decoding the delayed Doppler signal, or the control information includes a first index, and the first index is used to control preset protocols or physical resources. Query the coding modulation parameters in the information.

In one implementation, the transmission module is used for:

The first communication device determines the transmit power of each modulation symbol block according to the resource priority, and the transmit power is positively related to the resource priority;

The first communication device transmits the delayed Doppler signal and downlink control information corresponding to the modulation symbol block to the second communication device based on the transmission power of the modulation symbol block.

In one implementation, the delayed Doppler signal further includes the physical resource control information, and the physical resource control information includes reference information, or the downlink control information includes a second index, and the second index Used to query the reference information in a preset protocol or the physical resource control information; the reference information includes the location information of the delayed Doppler domain resource block and the relationship between the delayed Doppler domain resource block and The corresponding relationship between the modulation symbol blocks.

In one implementation, the location information includes at least one of the following:

The delay domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

Doppler domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

Wherein, the preset reference point is any point in the pilot delayed Doppler domain resource block or the delayed Doppler domain resource block corresponding to the protection area of the pilot information.

In one implementation, the mapping module 203 is specifically used to:

Randomly determine pilot delay Doppler domain resource blocks from the delay Doppler domain, and map the pilot information to the pilot delay Doppler domain resource blocks;

According to the pilot distance between the candidate delayed Doppler domain resource block and the pilot delayed Doppler domain resource block and the resource priority corresponding to the modulation symbol block, the at least one modulation symbol block is mapped to the corresponding On the matching candidate delayed Doppler domain resource blocks, the delayed Doppler signal corresponding to the information bit is obtained, wherein the candidate delayed Doppler domain resource block is the delayed Doppler domain in the delayed Doppler domain except the guide Delay Doppler domain resource blocks other than frequency delay Doppler domain resource blocks.

The resource mapping device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, details will not be described here.

The resource mapping device in the embodiment of the present application may be a terminal device, such as a terminal device with an operating system, or may be a component in the terminal device, such as an integrated circuit or chip. The terminal device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The resource mapping device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2. To avoid duplication, details will not be described here.

Optionally, as shown in Figure 8, this embodiment of the present application also provides a communication device 300, which includes a processor 301 and a memory 302. The memory 302 stores programs or instructions that can be run on the processor 301. program or instructions When executed by the processor 301, each step of the above resource mapping method embodiment is implemented and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.

It should be noted that the terminal equipment in the embodiment of the present application includes the above-mentioned mobile terminal equipment and non-mobile terminal equipment.

Figure 9 is a schematic diagram of the hardware structure of a terminal device that implements an embodiment of the present application.

The terminal device 900 includes but is not limited to: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 909, interface unit 908, memory 907, processor 910, etc. part.

Those skilled in the art can understand that the terminal device 900 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 910 through a power management system, thereby managing charging, discharging, and function through the power management system. Consumption management and other functions. The structure of the terminal device shown in Figure 9 does not constitute a limitation on the terminal device. The terminal device may include more or less components than shown in the figure, or combine certain components, or arrange different components, which will not be described again here. .

It should be understood that in the embodiment of the present application, the input unit 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042. The graphics processor 9041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras). The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072 . Touch panel 9071, also known as touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. Other input devices 9072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network side device. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

Memory 909 may be used to store software programs or instructions as well as various data. The memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 909 may include volatile memory or nonvolatile memory, or memory 909 may include both volatile and nonvolatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 910.

Among them, the processor 910 is used to obtain information bits and pilot information; encode and modulate the information bits to obtain at least one modulation symbol block; map the pilot information to a pilot delay Doppler domain resource block, and According to the resource priority corresponding to the modulation symbol block, the at least one modulation symbol block is mapped to a matching candidate delayed Doppler domain resource block to obtain a delayed Doppler signal corresponding to the information bit, wherein, The resource priority is positively related to the pilot distance, which is the distance between the candidate delayed Doppler domain resource block and the pilot delayed Doppler domain resource block.

In this way, based on the resource priority of the modulation symbol block, the modulation symbol block with a higher priority is mapped to the delayed Doppler domain resource block that is far away from the pilot information, even when the pilot guard interval is reduced. Mutual interference between pilots and information bits can be avoided as much as possible, thereby improving demodulation performance.

Optionally, the processor 910 is also configured to perform source coding on the information bits to obtain at least one source code block, where the source code block has a first priority;

Optionally, the processor 910 is further configured to determine channel coding parameters and modulation parameters corresponding to the source code block according to the first priority.

Optionally, the processor 910 is also used to:

The first communication device determines channel coding parameters and modulation parameters corresponding to source code blocks of different first priorities respectively; or,

Optionally, the processor 910 is also used to:

Optionally, processor 910 is also used to:

Optionally, the information bits include data information, or the information bits include: control information, or the information bits include: data information and control information,

Optionally, when the information bits include data information and control information, the radio frequency unit 901 is configured to transmit the delayed Doppler signal to the second communication device, so that the second communication device can The control information decodes the delayed Doppler signal to obtain the information bits;

Wherein, the control information includes coding modulation parameters for decoding the delayed Doppler signal, or the control information includes a first index, and the first index is used to control preset protocols or physical resources. Query the coding modulation parameters in the information.

Optionally, radio frequency unit 901 is used for:

Determine the transmit power of each modulation symbol block according to the resource priority, where the transmit power is positively related to the resource priority;

Based on the transmit power of the modulation symbol block, the delayed Doppler signal and downlink control information corresponding to the modulation symbol block are transmitted to the second communication device.

Optionally, the delayed Doppler signal also includes the physical resource control information, and the physical resource control information includes reference information, or the downlink control information includes a second index, and the second index is used for Query the reference information in a preset protocol or the physical resource control information; the reference information includes the location information of the candidate delayed Doppler domain resource block and the relationship between the candidate delayed Doppler domain resource block and The corresponding relationship between the modulation symbol blocks.

Optionally, the location information includes at least one of the following:

Optionally, processor 910 is also used to:

According to the pilot distance between the candidate delayed Doppler domain resource block and the pilot delayed Doppler domain resource block and the resource priority corresponding to the modulation symbol block, the at least one modulation symbol block is mapped to a matching On the candidate delayed Doppler domain resource blocks, the delayed Doppler signal corresponding to the information bit is obtained, wherein the candidate delayed Doppler domain resource block is the delayed Doppler domain except the pilot Delayed Doppler domain resource blocks other than delayed Doppler domain resource blocks.

An embodiment of the present application also provides a network side device. As shown in Figure 10, the network side device 1000 includes: an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004, and a memory 1005. Antenna 1001 is connected to radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and sends it out through the antenna 1001.

The method performed by the network side device in the above embodiment can be implemented in the baseband device 1003, which includes a baseband processor.

The baseband device 1003 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.

The network side device may also include a network interface 1006, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 1000 in the embodiment of the present application also includes: instructions or programs stored in the memory 1005 and executable on the processor 1004. The processor 1004 calls the instructions or programs in the memory 1005 to execute each of the steps shown in Figure 6. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.

An embodiment of the present application also provides a network side device. As shown in Figure 11, the network side device 1100 includes: a processor 1101, a network interface 1102 and a memory 1103. Among them, the network interface 1102 is, for example, a common public radio interface (CPRI).

Specifically, the network side device 1100 in this embodiment of the present application also includes: stored in the memory 1103 and available at The processor 1101 calls the instructions or programs in the memory 1103 to execute the method of executing each module shown in Figure 2, and achieves the same technical effect. To avoid repetition, it will not be described again here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above resource mapping method embodiment. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above resource mapping method embodiment. Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.

Embodiments of the present application also provide a resource mapping system, including: a terminal and a network side device. The terminal can be used to perform the steps of the resource mapping method as described above. The network side device can be used to perform the resource mapping method as described above. Mapping method steps.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be to be combined or integrated into another system, or some features may be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

It can be understood that the embodiments described in the embodiments of the present disclosure can be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, modules, units, and subunits can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), programmable logic device (Programmable Logic Device, PLD), field-programmable gate array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, used to execute the disclosure other electronic units or combinations thereof with the above functions.

For software implementation, the technology described in the embodiments of the present disclosure can be implemented through modules (such as procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure. Software code may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A resource mapping method, including:

The first communication device acquires information bits and pilot information;

The first communication device performs encoding and modulation on the information bits to obtain at least one modulation symbol block;

The first communication device maps the pilot information to a pilot delay Doppler domain resource block, and maps the at least one modulation symbol block to a matching resource block according to the resource priority corresponding to the modulation symbol block. On the candidate delayed Doppler domain resource blocks, the delayed Doppler signal corresponding to the information bit is obtained, wherein the resource priority is positively related to the pilot distance, and the pilot distance is the candidate delayed Doppler The distance between the Doppler domain resource block and the pilot delay Doppler domain resource block.
The method according to claim 1, wherein the first communication device performs coding and modulation on the information bits to obtain at least one modulation symbol block, including:

The first communication device performs source coding on the information bits to obtain at least one source code block, and the source code block has a first priority;

The first communication device determines the coding modulation parameter corresponding to the source code block according to the first priority;

The first communication device performs coding and modulation on the corresponding source code block based on the coding modulation parameter to obtain at least one modulation symbol block, and the resource priority corresponding to the modulation symbol block is positively related to the first priority.
The method according to claim 2, wherein the first communication device determines the coding modulation parameters corresponding to the source code block according to the first priority, including:

The first communication device determines channel coding parameters and modulation parameters corresponding to the source code block according to the first priority.
The method according to claim 2, wherein the first communication device determines the coding modulation parameters corresponding to the source code block according to the first priority, including:

The first communication device determines channel coding parameters and modulation parameters corresponding to source code blocks of different first priorities respectively; or,

The first communication device divides at least two source code blocks adjacent to the first priority into one group according to the order of the first priority from high to low, and determines the corresponding source code blocks of each group respectively. channel coding parameters and modulation parameters.
The method according to claim 1, wherein the first communication device performs coding and modulation on the information bits to obtain at least one modulation symbol block, including:

The first communication device performs source coding on the information bits to obtain at least one source code block, and the source code block has a second priority;

The first communication device determines the channel coding parameters corresponding to the source code block according to the second priority;

The first communication device performs channel coding on the corresponding source code block based on the determined channel coding parameters to obtain at least one coded code block. The coded code block has a third priority, and the third priority Positively related to said second priority;

The first communication device determines the modulation parameter corresponding to the encoding code block according to the third priority;

The first communication device modulates the encoded code block based on the determined modulation parameter to obtain at least one modulation symbol block, and the resource priority corresponding to the modulation symbol block is positively related to the third priority.
The method according to claim 5, wherein the first communication device determines the channel coding parameters corresponding to the source code block according to the second priority, including:

The first communication device determines channel coding parameters corresponding to source code blocks of different second priorities respectively; or,

The first communication device divides at least two source code blocks adjacent to the second priority into one group according to the order of the second priority from high to low, and determines the information corresponding to each group of source code blocks respectively. Channel coding parameters;

The first communication device determines the modulation parameters corresponding to the encoding code block according to the third priority, including:

The first communication device determines the modulation parameters corresponding to the encoding code blocks of different third priorities respectively; or,

The first communication device divides at least two encoding code blocks adjacent to the third priority into one group according to the order from high to low of the third priority, and determines the corresponding encoding code blocks of each group respectively. modulation parameters.
The method according to claim 1, wherein the information bits include data information, or the information bits include: control information, or the information bits include: data information and control information,

Wherein, the resource priority corresponding to the modulation symbol block corresponding to the control information is higher than the resource priority corresponding to the modulation symbol block corresponding to the data information.
The method according to claim 7, wherein when the information bits include data information and control information, the method further includes:

The first communication device transmits the delayed Doppler signal to a second communication device, so that the second communication device decodes the delayed Doppler signal according to the control information to obtain the information bits ;

Wherein, the control information includes coding modulation parameters for decoding the delayed Doppler signal, or the control information includes a first index, and the first index is used to control preset protocols or physical resources. Query the coding modulation parameters in the information.
The method of claim 8, wherein the first communication device transmits the delayed Doppler signal to a second communication device, comprising:

The first communication device determines the transmit power of each modulation symbol block according to the resource priority, and the transmit power is positively related to the resource priority;

The first communication device transmits the delayed Doppler signal corresponding to the modulation symbol block to the second communication device based on the transmission power of the modulation symbol block.
The method according to claim 8, wherein the delayed Doppler signal further includes the physical resource control information, the physical resource control information includes reference information, or the control information includes a second index , the second index is used to query the reference information in a preset protocol or the physical resource control information; the reference information includes the location information of the candidate delayed Doppler domain resource block and the candidate Correspondence between delayed Doppler domain resource blocks and the modulation symbol blocks.
The method of claim 10, wherein the location information includes at least one of the following:

The delay domain position of the candidate delayed Doppler domain resource block;

The Doppler domain position of the candidate delayed Doppler domain resource block;

The offset between the candidate delayed Doppler domain resource block and the preset reference point;

The delay domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

Doppler domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

The resource size occupied by the candidate delayed Doppler domain resource block;

Wherein, the preset reference point is any point in the pilot delayed Doppler domain resource block or the delayed Doppler domain resource block corresponding to the protection area of the pilot information.
The method according to claim 1, wherein the first communication device maps the pilot information to a pilot delay Doppler domain resource block, and maps the pilot information to a pilot delay Doppler domain resource block according to the resource priority corresponding to the modulation symbol block. The at least one modulation symbol block is mapped to a matching candidate delayed Doppler domain resource block to obtain a delayed Doppler signal corresponding to the information bit, including:

The first communication device randomly determines a pilot delay Doppler domain resource block from the delay Doppler domain, and maps the pilot information to the pilot delay Doppler domain resource block;

The first communication device modulates the at least one modulation symbol according to a pilot distance between the candidate delayed Doppler domain resource block and the pilot delayed Doppler domain resource block and a resource priority of the modulation symbol block. The symbol block is mapped to a matching candidate delayed Doppler domain resource block to obtain a delayed Doppler signal corresponding to the information bit, wherein the candidate delayed Doppler domain resource block is the delayed Doppler domain Other delayed Doppler domain resource blocks except the pilot delayed Doppler domain resource block.
A resource mapping device, which includes:

Acquisition module, used to obtain information bits and pilot information;

A coding and modulation module, used to code and modulate the information bits to obtain at least one modulation symbol block;

A mapping module configured to map the pilot information to a pilot delay Doppler domain resource block, and map the at least one modulation symbol block to a matching resource block according to the resource priority corresponding to the modulation symbol block. On the candidate delayed Doppler domain resource block, the delayed Doppler signal corresponding to the information bit is obtained, wherein the resource priority is positively related to the pilot distance, and the pilot distance is the candidate delayed Doppler The distance between the domain resource block and the pilot delay Doppler domain resource block.
The device according to claim 13, wherein the coding and modulation module is specifically used for:

Perform source coding on the information bits to obtain at least one source code block, where the source code block has a first priority;

According to the first priority, determine the coding modulation parameters corresponding to the source code block;

Based on the determined coding and modulation parameters, the corresponding source code block is coded and modulated to obtain at least one modulation symbol block, and the resource priority corresponding to the modulation symbol block is positively related to the first priority.
The device according to claim 14, wherein the coding and modulation module is specifically used for:

According to the first priority, the channel coding parameters and modulation parameters corresponding to the source code block are determined.
The device according to claim 14, wherein the coding and modulation module is specifically used for:

The first communication device determines channel coding parameters and modulation parameters corresponding to source code blocks of different first priorities respectively; or,

The first communication device divides at least two source code blocks adjacent to the first priority into one group according to the order of the first priority from high to low, and determines the corresponding source code blocks of each group respectively. channel coding parameters and modulation parameters.
The device according to claim 13, wherein the coding and modulation module is specifically used for:

Perform source coding on the information bits to obtain at least one source code block, where the source code block has a second priority;

According to the second priority, determine the channel coding parameters corresponding to the source code block;

Based on the determined channel coding parameters, perform channel coding on the corresponding source code block to obtain at least one coded code block. The coded code block has a third priority, and the third priority is the same as the second priority. positive correlation;

According to the third priority, determine the modulation parameters corresponding to the encoded code block;

Based on the determined modulation parameters, the encoding code block is modulated to obtain at least one modulation symbol block, the resource priority corresponding to the modulation symbol block, and the resource priority is positively related to the third priority.
The device according to claim 17, wherein the coding and modulation module is specifically used for:

The first communication device determines channel coding parameters corresponding to source code blocks of different second priorities respectively; or,

The first communication device divides at least two source code blocks adjacent to the second priority into one group according to the order of the second priority from high to low, and determines the information corresponding to each group of source code blocks respectively. Channel coding parameters;

The first communication device determines the modulation parameters corresponding to the encoding code block according to the third priority, including:

The first communication device determines the modulation parameters corresponding to the encoding code blocks of different third priorities respectively; or,

The first communication device divides at least two encoding code blocks adjacent to the third priority into one group according to the order from high to low of the third priority, and determines the corresponding encoding code blocks of each group respectively. modulation parameters.
The device of claim 13, wherein the information bits comprise data information, or the information bits comprise control information, or the information bits comprise data information and control information,

Wherein, the resource priority corresponding to the modulation symbol block corresponding to the control information is higher than the resource priority corresponding to the modulation symbol block corresponding to the data information.
The device according to claim 19, wherein when the information bits include data information and control information, the device further includes:

A transmission module configured to transmit the delayed Doppler signal to a second communication device, so that the second communication device decodes the delayed Doppler signal according to the control information to obtain the information bits; Wherein, the control information includes coding modulation parameters for decoding the delayed Doppler signal, or the control information includes a first index, and the first index is used to control preset protocols or physical resources. Query the coding modulation parameters in the information.
The device according to claim 20, wherein the transmission module is used for:

The first communication device determines the transmit power of each modulation symbol block according to the resource priority, and the transmit power is positively related to the resource priority;

The first communication device transmits the delayed Doppler signal and downlink control information corresponding to the modulation symbol block to the second communication device based on the transmission power of the modulation symbol block.
The apparatus according to claim 20, wherein the delayed Doppler signal further includes the physical resource control information, the physical resource control information includes reference information, or the control information includes a second index , the second index is used to query the reference information in a preset protocol or the physical resource control information; the reference information includes the location information of the candidate delayed Doppler domain resource block and the candidate Correspondence between delayed Doppler domain resource blocks and the modulation symbol blocks.
The device of claim 22, wherein the location information includes at least one of the following:

The delay domain position of the candidate delayed Doppler domain resource block;

The Doppler domain position of the candidate delayed Doppler domain resource block;

The offset between the candidate delayed Doppler domain resource block and the preset reference point;

The delay domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

Doppler domain offset between the candidate delayed Doppler domain resource block and the preset reference point;

Wherein, the preset reference point is any point in the pilot delayed Doppler domain resource block or the delayed Doppler domain resource block corresponding to the protection area of the pilot information.
The device according to claim 13, wherein the mapping module is specifically used for:

Randomly determine pilot delay Doppler domain resource blocks from the delay Doppler domain, and map the pilot information to the pilot delay Doppler domain resource blocks;

According to the pilot distance between the candidate delayed Doppler domain resource block and the pilot delayed Doppler domain resource block and the resource priority corresponding to the modulation symbol block, the at least one modulation symbol block is mapped to the corresponding On the matching candidate delayed Doppler domain resource blocks, the delayed Doppler signal corresponding to the information bit is obtained, wherein the candidate delayed Doppler domain resource block is the delayed Doppler domain in the delayed Doppler domain except the guide Delay Doppler domain resource blocks other than frequency delay Doppler domain resource blocks.
A communication device, which includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any of claims 1 to 12 is implemented. Steps of the resource mapping method described in one item.
A readable storage medium, wherein a program or instructions are stored on the readable storage medium, and when the program or instructions are executed by a processor, the steps of the resource mapping method according to any one of claims 1-12 are implemented.