CN117714251A

CN117714251A - Resource mapping method, device and communication equipment

Info

Publication number: CN117714251A
Application number: CN202211091585.3A
Authority: CN
Inventors: 袁璞; 刘昊
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2024-03-15
Also published as: WO2024051628A1

Abstract

The application discloses a resource mapping method, a device and communication equipment, which belong to the field of communication, and the resource mapping method in the embodiment of the application comprises the following steps: acquiring information bits and pilot frequency information; performing code modulation on the information bits to obtain at least one modulation symbol block; and mapping the pilot frequency information to a pilot frequency delay Doppler domain resource block, and mapping the at least one modulation symbol block to a matched candidate delay Doppler domain resource block according to the resource priority corresponding to the modulation symbol block to obtain a delay Doppler signal corresponding to the information bit, wherein the resource priority is positively correlated with a pilot frequency distance, and the pilot frequency distance is the distance between the candidate delay Doppler domain resource block and the pilot frequency delay Doppler domain resource block.

Description

Resource mapping method, device and communication equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a resource mapping method, a resource mapping device and communication equipment.

Background

In an orthogonal frequency division multiplexing (Orthogonal frequency division multiplexing, OFDM) multi-carrier system, the size of the subcarrier spacing is limited, so in a high-speed moving scenario, a larger relative speed between the transceiver ends can cause a larger doppler shift of the signal, break the orthogonality between the subcarriers, and cause serious channel interference (Carrier Interference, ICI) between the subcarriers.

In the prior art, an orthogonal time-frequency space (orthogonal time and frequency space, OTFS) modulation technique may be used to reduce ICI between subcarriers, where information bits and pilots are mapped into delay-doppler domain signals at a first communication device, and then, based on a transceiver procedure of an OFDM system, the delay-doppler domain signals are sent to a second communication device, so that the second communication device may recover the information bits and pilots. Because the delay Doppler domain signal can directly reflect the channel delay Doppler response characteristic caused by the geometric characteristic of the relative position of a receiving end, the OTFS modulation technology can reduce the coupling interference among data sample points and reduce ICI among subcarriers.

The OTFS adopts a single-point pulse pilot frequency and a guard interval design surrounding the single-point pulse pilot frequency, so that the pilot frequency and the information bits have enough guard intervals, and mutual interference between the pilot frequency and the information bits can be avoided. However, this pilot signal structure causes a large overhead, and if the pilot guard interval is reduced, a part of information bits near the pilot is interfered by the pilot, thereby affecting demodulation performance.

Disclosure of Invention

The embodiment of the application provides a resource mapping method, a resource mapping device and first communication equipment, which can solve the problem that a pilot signal structure causes larger expenditure, and if pilot guard interval is reduced, a part of information bits close to pilot frequency are interfered by the pilot frequency, so that demodulation performance is affected.

In a first aspect, an embodiment of the present application provides a resource mapping method, where the method includes:

the first communication equipment acquires information bits and pilot frequency information;

the first communication equipment carries out code modulation on the information bits to obtain at least one modulation symbol block;

the first communication device maps the pilot frequency information to a pilot frequency delay Doppler domain resource block, and maps the at least one modulation symbol block to a matched candidate delay Doppler domain resource block according to a resource priority corresponding to the modulation symbol block to obtain a delay Doppler signal corresponding to the information bit, wherein the resource priority is positively correlated with a pilot frequency distance, and the pilot frequency distance is a distance between the candidate delay Doppler domain resource block and the pilot frequency delay Doppler domain resource block.

In a second aspect, an embodiment of the present application provides an apparatus for resource mapping, including:

the acquisition module is used for acquiring information bits and pilot frequency information;

the code modulation module is used for carrying out code modulation on the information bits to obtain at least one modulation symbol block;

and the mapping module is used for mapping the pilot frequency information to a pilot frequency delay Doppler domain resource block, and mapping the at least one modulation symbol block to a matched candidate delay Doppler domain resource block according to the resource priority corresponding to the modulation symbol block to obtain a delay Doppler signal corresponding to the information bit, wherein the resource priority is positively correlated with a pilot frequency distance, and the pilot frequency distance is the distance between the candidate delay Doppler domain resource block and the pilot frequency delay Doppler domain resource block.

In a third aspect, there is provided a first communications device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, there is provided a communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect; the communication equipment is network side equipment or terminal equipment.

In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor realizes the steps of the method according to the first aspect.

In a sixth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions to implement the method of the first aspect.

In a seventh aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect.

In the embodiment of the application, information bits and pilot frequency information are acquired; performing code modulation on the information bits to obtain at least one modulation symbol block; and mapping the pilot frequency information to a pilot frequency delay Doppler domain resource block, and mapping at least one modulation symbol block to a matched candidate delay Doppler domain resource block according to the resource priority corresponding to the modulation symbol block to obtain a delay Doppler signal corresponding to the information bit, wherein the resource priority is positively correlated with a pilot frequency distance, and the pilot frequency distance is the distance between the candidate delay Doppler domain resource block and the pilot frequency delay Doppler domain resource block.

In this way, based on the resource priority of the modulation symbol blocks, the modulation symbol blocks with higher priority are mapped to the delay Doppler domain resource blocks with a longer distance from the pilot frequency information, so that the mutual interference between the pilot frequency information and the information bits is reduced as much as possible, and the second communication device can demodulate the received delay Doppler signals under the condition of reducing the pilot frequency protection interval, thereby improving the transmission and demodulation performance of the information bits.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a flow chart of steps of a resource mapping method of the present application;

FIG. 3 is a schematic diagram of signal transmission of an OTFS system based on OFDM;

figure 4 is a schematic diagram of a delay-doppler domain resource mapping scheme;

fig. 5 is a schematic diagram of a mapping relationship between a code block and a candidate delay-doppler-domain resource block;

figure 6 is a delay-doppler domain schematic;

FIG. 7 is a block diagram of a resource mapping device of the present application;

fig. 8 is a block diagram of a communication device in an embodiment of the present application;

fig. 9 is a block diagram of a terminal device in an embodiment of the present application;

fig. 10 is a block diagram of a network device in an embodiment of the present application;

fig. 11 is a block diagram of a network device in an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and NR terminology is used in much of the description below, but these techniques may also be applied to applications other than NR system applications, such as the 6th generation (6th Generation,6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: 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 functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscr iber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The resource mapping method provided by the embodiment of the application is described in detail below by some embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 2, a flowchart illustrating steps of a resource mapping method of the present application may specifically include the following steps:

in step S11, the first communication device acquires information bits and pilot information.

In an OFDM multi-carrier system, in order to reduce inter-subcarrier ICI, OTFS modulation techniques may be employed to map information bits and pilots into delay-doppler domain signals at a first communication device and then transmit the delay-doppler domain signals to a second communication device based on the transceiver flow of the OFDM system.

As shown in fig. 3, which is a schematic signal transmission diagram of an OTFS system based on OFDM, in a first communication device, a precoder transmits signals x [ k, l ] in a delay-doppler domain using an inverse-octave fourier transform (Inverse symplectic Fourier transform, ISFFT)]Conversion from delay Doppler domain to time-frequency domain to obtain time-frequency domain transmission signal X [ m, n ]]Modulating the time-frequency domain signal by using an OFDM modulator to obtain a transmission signal s (t), transmitting the transmission signal through a channel h (tau, v), and demodulating the received signal r (t) by using an OFDM demodulator by using a second communication device to obtain a time-frequency domain received signal Y [ m, n ] ]Further, the decoder receives the signal Y [ m, n ] in the time-frequency domain by means of an octave Fourier transform (Symplectic Fourier transform, SFFT)]Calculating to obtain a delay Doppler domain received signal y [ k, l ]]Then, the channel estimation and equalization processing on the delay Doppler domain can obtain the estimation of the signal transmitted by the delay Doppler domain

The delay Doppler domain signal comprises information bits and pilot frequency information, wherein the information bits carry information to be transmitted, the information bits comprise data information, control information and the like, the pilot frequency information is known data agreed in advance by both the first communication equipment and the second communication equipment, so that phase reference is provided for the second communication equipment, and channel estimation is carried out. In OTFS systems, 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 fig. 4, in one embodiment, the delay-doppler domain resource mapping method is that the left is a delay-doppler domain transmission signal, where the delay-doppler domain resource block with reference number 1 is used for mappingSurrounding the pilot frequency resource block, which is framed by the pilot frequency delay Doppler domain resource block, is a guard interval delay Doppler domain resource block, and not framed by the delay Doppler domain resource block for mapping information bits, wherein the position information of the pilot frequency delay Doppler domain resource block can be expressed as (l) _p ，k _p ) The area of the guard interval delay doppler domain resource block can be expressed as (2 l) _τ +1)(4k _v +1) -1 the area of the delay-Doppler domain resource block for mapping information bits can be expressed as MN- (2 l) _τ +1)(4k _v +1); the right side is the delay-doppler domain received signal, and the delay-doppler domain resource block denoted by 2 is the two offset peaks occurring in the guard interval resource block. The number of columns of the resource blocks M of the delay-doppler domain determines the delay resolution of the system, the number of columns N determines the doppler resolution of the system, and the sizes of M and N can be designed according to the user requirements.

The occurrence of the offset peak means that two secondary paths with different delay Doppler exist in the channel besides the main path, and the delay Doppler domain expression of the channel can be obtained by measuring the amplitude, the delay and the Doppler parameters of the secondary paths, so that the mutual interference between pilot frequency information and information bits is reduced, and the accuracy of channel estimation is improved. In this resource mapping manner, if no guard interval delay-doppler domain resource block or fewer guard interval delay-doppler domain resource blocks are set, then these two offset peaks will pollute the delay-doppler domain resource blocks near the pilot delay-doppler domain resource block, but the guard interval delay-doppler domain resource block will occupy a larger overhead, so an improvement is needed for this resource mapping manner.

In this embodiment of the present application, the first communication device may be an access network device in fig. 1, such as a base station or an artificial intelligence processing node newly defined at the access network side, or may be a terminal device in fig. 1, or may be a core network device in fig. 1, such as a network data analysis function (Network Data Analytics Function, NWDAF), a location management function (Location Management Function, LMF), or a processing node newly defined at the core network side, or may be a combination of the above multiple nodes. The first communication device may obtain information bits through various modes such as data acquisition and collection, where the information bits are data to be transmitted, and may be image data, audio data, video data, text data, or the like, which is not specifically limited.

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

In this step, the information bits may be coded and modulated, and the information bits are processed into at least one modulation symbol block, where the modulation symbol block corresponds to a resource priority, the resource priority may represent an importance level of the modulation symbol block, a modulation symbol block with a high resource priority has a higher importance level, and a modulation symbol block with a low resource priority has a lower importance level and may contain more redundant information.

In one implementation, the step of performing coded modulation on the information bits to obtain at least one modulation symbol block may include: performing source coding on the information bits to obtain at least one source code block, wherein the source code block has a first priority; determining a code modulation parameter corresponding to the source code block according to the first priority; and carrying out code modulation on the source code block based on the determined code modulation parameters to obtain at least one modulation symbol block, wherein the resource priority corresponding to the modulation symbol block is positively correlated with the first priority.

That is, after the information bits are obtained, source coding is required to be performed on the information bits to obtain a source code block, so that redundant information in the information bits is reduced, and the anti-interference capability during transmission is improved. Then, the source code blocks with different first priorities may be coded and modulated by using different coding and modulation parameters, so as to represent resource priorities corresponding to different modulation symbol blocks, where the coding and modulation parameters may include channel coding parameters and modulation parameters, the channel coding parameters may include code rates and/or cyclic redundancy check (Cyclic Redundancy Check, CRC) check bits with different lengths, the modulation parameters may include modulation orders, and the like, and the method is not specifically limited.

For example, if the information bits are image data, then a wavelet-based source coding method may be employed to process the image data into a plurality of source code blocks, wherein a first higher priority source code block corresponds to base layer (progressive layer) information of the image data that presents the base content of the image data but has less detail information, e.g., lower color depth, lower resolution, etc.; the source code block with lower first priority corresponds to residual layer (residual layer) information of the image data, and has more detail information; when the image data is displayed, the image data can be sequentially displayed in the sequence from the base layer information to the residual layer information, and more details are added to the displayed image next time. Alternatively, if the information bits are video data, the first higher priority source code blocks may correspond to key frames in the video data, and the first lower priority source code blocks correspond to reference frames in the video data; and the like, and is not particularly limited.

In this way, under the condition that the channel capacity is limited, the code modulation and transmission processing can be carried out on only partial source code blocks with higher first priority so as to meet the basic service requirement, for example, only the source code blocks corresponding to the basic layer information and a small amount of residual layer information of the image data can be processed, and the image information with limited details can be provided; and when the channel capacity is high, all the source code blocks can be processed, so that flexible selection is provided for information transmission, and the flexibility of communication and the adaptability of scenes are improved.

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

The channel coding parameters are used for carrying out channel coding on the source code blocks, the modulation parameters are used for modulating the source code blocks after the channel coding, the channel coding adopts an error correction and detection technology to process the source code blocks, the diversity gain can be obtained so as to resist the influence of channel fading, the capability of resisting various interferences when data are transmitted in a channel is enhanced, and the reliability of the system is improved. After the source code blocks with different first priorities are obtained, the channel coding parameters and the modulation parameters corresponding to each first priority can be determined, then the source code blocks are channel coded based on the channel coding parameters, then the modulation parameters are modulated, that is, the different source code blocks are channel coded and modulated with different parameters according to the different first priorities, so as to obtain modulation symbol blocks, and as the channel coding parameters and the modulation parameters correspond to the different first priorities, the resource priorities corresponding to the obtained modulation symbol blocks are positively correlated with the first priorities, so that the situation that the modulation symbol blocks obtained after the same set of coding modulation parameters are used for coding modulation cannot be distinguished in priority is avoided.

For example, for the source code block with higher first priority, the channel coding can be performed with lower code rate, i.e. more redundant bits are added during channel coding to ensure reliability; for the source code blocks with lower first priority, a higher code rate can be used, and fewer redundant bits are added during channel coding.

In one implementation, the step of determining, by the first communication device, a code modulation parameter corresponding to the source code block according to the first priority may include: the first communication equipment respectively determines channel coding parameters and modulation parameters corresponding to source code blocks with different first priorities, namely, each first priority can respectively correspond to different channel coding parameters and modulation parameters, the source code blocks with the same first priority adopt the same channel coding parameters and modulation parameters for coding modulation, and the source code blocks with different first priorities adopt different channel coding parameters and modulation parameters for coding modulation; or the first communication device divides at least two source code blocks with adjacent first priorities into a group according to the order of the first priorities from high to low, and determines the channel coding parameters and the modulation parameters corresponding to each group of source code blocks respectively, that is, the source code blocks with similar first priorities can be divided into a group, for example, if four first priorities exist, two higher first priorities can be divided into a group, two lower first priorities can be divided into another group, and then the channel coding parameters and the modulation parameters corresponding to the source code blocks with corresponding first priorities of each group are determined respectively, so that the source code blocks with similar first priorities are coded and modulated by adopting the same channel coding parameters and modulation parameters, and the number of modulation symbol blocks can be less than that of the source code blocks, and gain caused by the increase of the code length can be obtained.

Alternatively, in another implementation, the step of performing coded modulation on the information bits to obtain at least one modulation symbol block may include: performing source coding on the information bits to obtain at least one source code block, wherein the source code block has a second priority; determining channel coding parameters corresponding to the source code blocks according to the second priority; performing channel coding on the source code block based on the determined channel coding parameters to obtain at least one coding code block, wherein the coding code block has a third priority, and the third priority is positively correlated with the second priority; determining a modulation parameter corresponding to the coding code block according to the third priority; and modulating the code block based on the determined modulation parameter to obtain at least one modulation symbol block, wherein the resource priority corresponding to the modulation symbol block is positively correlated with the third priority.

That is, the source code blocks with different second priorities may be channel coded by using different channel coding parameters to obtain code blocks with different third priorities, then determining the modulation parameter corresponding to each third priority, and modulating based on the modulation parameter to obtain a modulation symbol block, where the obtained modulation symbol block has a resource priority, the resource priority is positively correlated with the third priority, and the resource priority is positively correlated with the second priority. The channel coding and modulation are the same as those of the foregoing embodiments, and are not described herein.

The step of determining, by the first communication device, the channel coding parameter corresponding to the source code block according to the second priority may include: the first communication equipment respectively determines channel coding parameters corresponding to source code blocks with different second priorities; or the first communication equipment divides at least two adjacent source code blocks of the second priority into a group according to the sequence from high to low of the second priority, and respectively determines channel coding parameters corresponding to each group of source code blocks. The step of determining, by the first communication device, a modulation parameter corresponding to the encoded code block according to the third priority may include: the first communication equipment respectively determines modulation parameters corresponding to the code blocks with different third priorities; or the first communication equipment divides at least two adjacent code blocks of the third priority into a group according to the sequence from high to low of the third priority, and determines the modulation parameters corresponding to each group of code blocks respectively.

That is, each second priority may correspond to a different channel coding parameter, the source code blocks with the same second priority use the same channel coding parameter to perform channel coding, or, in the process of performing channel coding on the source code blocks, the source code blocks with similar second priorities may be combined to perform channel coding, where the number of the code blocks is less than the number of the source code blocks, so as to obtain a gain caused by increasing the code length; similarly, each third priority may correspond to a different modulation parameter, and the code blocks with the same third priority are modulated by using the same modulation parameter, or the code blocks with similar third priorities may be combined to modulate in the process of modulating the code blocks, where the number of modulation symbol blocks may be less than the number of code blocks, so as to obtain a gain caused by the increase of the code length.

For example, the source coding scheme used in the present application may include, but is not limited to shannon coding, huffman coding and run length coding; channel coding schemes may include, but are not limited to, block coding, convolutional coding, low density parity check code (Low Density Parity Check Code, LDPC) coding, CRC coding; the modulation mode may include, but is not limited to, quadrature amplitude (Quadrature Amplitude Modulation, QAM) modulation, quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK) modulation, vestigial sideband (vestigial sideband, VSB) modulation, or coded orthogonal frequency division multiplexing (Coded Orthogonal Frequency Division Multiplexing, COFDM) modulation, etc., and may be set according to the requirements, and is not particularly limited.

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 the matched candidate delay-doppler domain resource block according to the resource priority corresponding to the modulation symbol block, so as to obtain the delay-doppler signal corresponding to the information bit, where the resource priority is positively correlated with the pilot distance, and the pilot distance is the distance between the candidate delay-doppler domain resource block and the pilot delay-doppler domain resource block.

In this step, after obtaining at least one modulation symbol block, the obtained pilot information may be mapped onto a pilot delay doppler domain resource block, and the modulation symbol block may be mapped onto a candidate delay doppler domain resource block matched with the resource priority thereof, so that a single point pilot or modulation symbol block is modulated by a pulse in each delay doppler domain resource block, and a delay doppler signal corresponding to an information bit is obtained. The resource priority is positively correlated with the pilot frequency, that is, the farther the candidate delay-doppler-domain resource block is from the pilot frequency delay-doppler-domain resource block, the higher the resource priority of the mapped modulation symbol block, otherwise, the closer the candidate delay-doppler-domain resource block is from the pilot frequency delay-doppler-domain resource block, the lower the resource priority of the mapped modulation symbol block.

In this way, the modulation symbol blocks with higher resource priority are mapped to the candidate delay-Doppler domain resource blocks which are far away from the pilot delay-Doppler domain resource blocks, so that the distance between the modulation symbol blocks with higher resource priority and pilot information in the delay-Doppler domain is far away, and the interference is not easy to occur; correspondingly, the distance between the modulation symbol block with lower resource priority and the pilot frequency information is relatively short, and the possibility of being interfered by the pilot frequency is relatively high; under the condition that the guard interval between the pilot frequency information and the information bits is reduced or canceled, the modulation symbol blocks with higher resource priority can still be transmitted to the second communication equipment without being interfered, the importance degree of the information bits carried by the modulation symbol blocks with lower resource priority is lower, and even if the interference is received, the influence on the second communication equipment to restore the information bits is also smaller, so that the transmission efficiency of the information bits can be improved.

In one implementation, the step of mapping the information bits and the pilot information by the first communication device may include: randomly determining a pilot frequency delay Doppler domain resource block from a delay Doppler domain, and mapping pilot frequency information to the pilot frequency delay Doppler domain resource block; and mapping the modulation symbol block to the matched candidate delay Doppler domain resource block according to the pilot frequency distance resource priority between the candidate delay Doppler domain resource block and the pilot frequency delay Doppler domain resource block to obtain the delay Doppler signal corresponding to the information bit, wherein the candidate delay Doppler domain resource block is other delay Doppler domain resource blocks except the pilot frequency delay Doppler domain resource block in the delay Doppler domain.

That is, the pilot information is mapped onto the delay-doppler domain resource blocks in the delay-doppler domain at random, then, the pilot distances of other delay-doppler domain resource blocks in the delay-doppler domain are determined according to the mapping positions of the pilot information, the delay-doppler domain resource blocks without the pilot information are used as candidate delay-doppler domain resource blocks, and then, the modulation symbol blocks are mapped onto the candidate delay-doppler domain resource blocks with the pilot distances matched with the resource priorities, so as to obtain the delay-doppler signals corresponding to the information bits. In this way, the resource mapping mode provided by the application is more flexible.

Or, the function design can be performed on the resource blocks in the delay-doppler domain in advance, the function configuration and the matched resource priority of each delay-doppler domain resource block are determined, when the resource mapping is performed, the pilot frequency information is directly mapped to the preset pilot frequency delay-doppler domain resource block according to the function configuration information, the corresponding resource priority of each candidate delay-doppler domain resource block is directly obtained, and the modulation symbol block is mapped to the candidate delay-doppler domain resource block matched with the resource priority of the candidate delay-doppler domain resource block, so that the delay-doppler signal corresponding to the information bit is obtained.

In other words, the candidate delay-doppler domain resource block may be divided into two parts, where the first part is far away from the position where the pilot delay-doppler domain resource block is located, and the probability of being interfered by the pilot is low, that is, the delay-doppler domain resource block except for the pilot and pilot guard intervals in the conventional scheme, and the part of delay-doppler domain resource block may be allocated to the modulation symbol block with higher resource priority; the second part is a delay Doppler domain resource block which is adjacent to the position of the pilot delay Doppler domain resource block and possibly subject to pilot interference, namely the delay Doppler domain resource block occupied by the pilot guard interval in the traditional scheme, and the delay Doppler domain resource block is allocated to a modulation symbol block with lower resource priority, so that the channel capacity and the transmission information size are flexibly matched and optimized.

In this step, determining a candidate delay-doppler domain resource block with a pilot frequency distance matching with the resource priority of any modulation symbol block, which may be a modulation symbol block with the highest resource priority matching with the candidate delay-doppler domain resource block with the largest pilot frequency distance according to the corresponding relationship between the magnitude of the pilot frequency distance and the resource priority, a modulation symbol block with the second highest resource priority matching with the candidate delay-doppler domain resource block with the second largest pilot frequency distance, and so on; alternatively, the candidate delay-doppler domain resource blocks may be partitioned according to the pilot frequency distances, where the candidate delay-doppler domain resource blocks with similar pilot frequency distances are used as one partition, so as to obtain at least two partitions, for example, if the candidate delay-doppler domain resource blocks may be partitioned into two partitions and the resource priority is four levels, two modulation symbol blocks with higher resource priority may be partitioned into a first group, two modulation symbol blocks with lower resource priority may be partitioned into a second group, the first group matches the candidate delay-doppler domain resource block partition with larger pilot frequency distances, the group of modulation symbol blocks may be mapped to any candidate delay-doppler domain resource block in the partition, the second group matches the candidate delay-doppler domain resource block partition with smaller pilot frequency distances, the group of modulation symbol blocks may be mapped to any candidate delay-doppler domain resource block in the partition, and so on.

For example, as shown in fig. 5, a mapping relationship between the code blocks and the candidate delay-doppler domain resource blocks is shown. Assuming that the information bits are subjected to source coding and then have L source code blocks, the source code blocks have different second priorities, the source code blocks with the second priorities being similar to each other can be combined for channel coding and become P code blocks required by communication, wherein L is more than or equal to P, and the code blocks have different third priorities. The code blocks with the similar third priority can be combined and modulated to obtain Q modulation symbol blocks, wherein P is more than or equal to Q, and the modulation symbol blocks have different resource priorities. Further, the modulation symbol blocks are mapped onto candidate delay-doppler-domain resource blocks to obtain delay-doppler-domain signals.

As shown in fig. 6, a schematic diagram of a delay-doppler domain is shown, which includes m×n delay-doppler domain resource blocks, where the delay-doppler domain resource block denoted by 1 is a pilot delay-doppler domain resource block for mapping single point pilots, and its location information can be expressed as (l _p ，k _p ) The pilot delays around the Doppler domain resource block in the abscissa range l _p -l _τ ，l _p +l _τ ]And an ordinate range [ k ] _p -k _v ，k _p +k _v ]The candidate delay-doppler domain resource blocks in the range are completely coincident with the pilot interference range and are likely to be interfered by the pilot, so that the pilot distances of the candidate delay-doppler domain resource blocks which are not partitioned are smaller, and the pilot distances of the rest candidate delay-doppler domain resource blocks are larger. In the position except the candidate delay-doppler domain resource blocks which are not partitioned, leakage interference of partial pilot frequency exists, and the interference amount is reduced along with the increase of the distance between the candidate delay-doppler domain resource blocks and the pilot frequency, so that the candidate delay-doppler domain resource blocks with larger remaining pilot frequency distances can be continuously classified according to the pilot frequency distances, for example, the pilot frequency distances of the candidate delay-doppler domain resource blocks in the region D are farthest, and the corresponding resource priorities are highest; the pilot frequency distance of the candidate delay Doppler domain resource blocks in the region C is relatively close, and the corresponding resource priority is only higher than that of the candidate delay Doppler domain resource blocks which are not partitioned around the pilot frequency delay Doppler domain resource blocks; candidate delayed dopplers in region B and region a The pilot frequency distance of the Doppler domain resource block is far, and the corresponding resource priority is higher than the candidate delay Doppler domain resource block in the C area and lower than the candidate delay Doppler domain resource block in the D area.

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

In one implementation, the step of mapping at least one modulation symbol block to the matched candidate delay-doppler domain resource block to obtain the delay-doppler signal corresponding to the information bit may specifically include: and mapping the modulation symbol block corresponding to the control information to a candidate delay Doppler domain resource block of which the pilot frequency distance meets a preset condition, and mapping the modulation symbol block to a matched candidate delay Doppler domain resource block which is not mapped according to the resource priority to obtain a delay Doppler signal corresponding to the information bit.

That is, in a scenario with control information, candidate delay-doppler-domain resource blocks whose pilot distances satisfy a preset condition are allocated to the control information. Generally, before the information bits are analyzed, the control information transmitted in the control channel needs to be utilized, and by adopting the mode, the control information is mapped to the candidate delay-doppler domain resource blocks of which the pilot frequency distances meet the preset conditions, so that the reliability of the control channel can be further improved. The candidate delay-doppler-domain resource blocks with pilot frequency distances meeting the preset conditions may be candidate delay-doppler-domain resource blocks with pilot frequency distances ordered from high to low in the first few bits, or may be candidate delay-doppler-domain resource blocks with the largest pilot frequency distances, or may be candidate delay-doppler-domain resource blocks with pilot frequency distances higher than the preset distances, or the like, which is not particularly limited.

In the present application, when the information bit includes data information and control information, after obtaining a delay doppler signal corresponding to the information bit, the delay doppler signal may be transmitted, and the delay doppler signal is transmitted to the second communication device, so that the second communication device decodes the delay doppler signal according to the control information, to obtain the information bit; the control information may be uplink control information (Uplink Control Information, UCI) or downlink control information (Downlink Control Information, DCI), where the control information includes a coded modulation parameter for decoding a delay-doppler signal, or the control information includes a first index, where the first index is used to query the coded modulation parameter in preset protocol or physical resource control information. That is, the code modulation parameters may be indicated directly by the control information, or may be preset by the protocol, or the physical resource control information indicates an optional value of a set of code modulation parameters, and then the control information indicates an index of the code modulation parameters, so that the corresponding code modulation parameters may be queried in the protocol preset or the physical resource control information according to the index. The code modulation parameters may include a code rate, a CRC check bit, and a modulation order, and may further indicate a mapping relationship between the source code block and the code block.

Wherein in the process of mapping the modulation symbol blocks to the matched delay-doppler-domain resource blocks, the delay-doppler-domain resource blocks with the same pilot frequency distance map modulation symbol blocks with different resource priorities, in this case, the step of transmitting the delay-doppler signal by the first communication device to the second communication device may include: the first communication equipment determines the transmitting power of each modulation symbol block according to the resource priority, and the transmitting power is positively correlated with the resource priority; the first communication device transmits a delay-doppler signal corresponding to the modulation symbol block to the second communication device based on the transmit power of the modulation symbol block. The transmission power may be an absolute power value (dBm) or a relative value (dB) of a certain power value, that is, the delay-doppler signal corresponding to the modulation symbol block with higher resource priority may be sent with a larger power, and the delay-doppler signal corresponding to the modulation symbol block with lower resource priority may be sent with a smaller power, so that the modulation symbol blocks with different resource priorities may be reflected according to different transmission powers, thereby further reducing signal interference.

In one implementation manner, the first communication device may further 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, where the second index is used to query the reference information in a preset protocol or the physical resource control information; the reference information includes location information of the candidate delay-doppler-domain resource block and a correspondence of the candidate delay-doppler-domain resource block and the modulation symbol block.

In this way, the second communication device may decode the received delay-doppler signal according to the reference information to obtain an estimate of the modulation symbol block, and restore the information bit according to the code modulation parameter, where in the process of decoding the delay-doppler signal, it is required to obtain the position information of the delay-doppler domain resource block and the correspondence between the delay-doppler domain resource block and the modulation symbol block, that is, the reference information, because the information amount of the reference information is large, and the information amount carried by the control information is limited, the reference information is directly transmitted 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: delay domain locations of candidate delay-doppler domain resource blocks; doppler domain locations of candidate delay Doppler domain resource blocks; offset between the candidate delay-doppler domain resource block and a preset reference point; delay domain offset between the candidate delay-doppler-domain resource block and a preset reference point; doppler domain offset between the candidate delay Doppler domain resource block and a preset reference point; the size of the resources occupied by the candidate delay-doppler domain resource blocks; the preset reference point is any point in a delay-doppler domain resource block corresponding to a pilot delay-doppler domain resource block or a protection region of pilot information.

That is, assuming that the doppler signal is abstracted to a two-dimensional space with doppler as an abscissa and delay as an ordinate, the delay-doppler-domain resource block may be one polygon, and then the position information may be coordinate values of each vertex of the polygon with respect to a preset reference point in the delay-doppler domain; or some reference point within the polygon, such as some endpoint or center point, the position in the delay-doppler domain resource block relative to the pilot or pilot and some reference point within its guard region, the offset values in both the delay and doppler dimensions, and the size of the resources occupied by the polygon.

From the above, according to the technical solution provided in the present application, based on the resource priority of the modulation symbol block, the modulation symbol block with higher priority is mapped to the delay doppler domain resource block with a longer distance from the pilot information, so that the mutual interference between the pilot information and the information bits is reduced as much as possible, and even if the pilot guard interval is reduced, the second communication device can demodulate the received delay doppler signal, so as to improve the transmission and demodulation performance of the information bits.

For ease of understanding, the resource mapping method of the present application is described in several embodiments below.

In a specific embodiment of the present application, the method comprises the following steps:

and step one, carrying out source coding on the information bits to obtain L source code blocks, wherein each source code block has a second priority.

And step two, carrying out channel coding on the L source code blocks, wherein different channel coding parameters can be given to each source code block according to the difference of the second priority, and the channel coding parameters comprise CRC check bits, coding efficiency and the like. After channel coding, P code blocks are obtained, the code blocks having a third priority.

And thirdly, modulating the P code blocks, wherein different modulation parameters can be given to each code block according to the difference of the third priority, and the modulation parameters can be modulation orders and the like. In the modulation process, the code blocks with similar third priorities can be modulated jointly to obtain Q modulation symbol blocks, and the resource priority corresponding to each modulation symbol block is positively correlated with the third priority.

And step four, mapping the Q modulation symbol blocks to Q candidate delay Doppler domain resource blocks, wherein the resource priority of the modulation symbol blocks is positively correlated with the pilot frequency distance of the delay Doppler domain resource blocks, and the pilot frequency distance is the distance between the candidate delay Doppler domain resource blocks and the pilot frequency delay Doppler domain resource blocks. In one implementation, different transmit powers may be used to distinguish between different resource priority modulation symbol blocks of a delay-doppler-domain resource block mapped to the same pilot distance, if further prioritization is required.

Further, the second step and the third step in the above implementation manner may be combined into one step, so as to obtain the following embodiments:

and step one, carrying out source coding on the information bits to obtain L source code blocks, wherein each source code block has a first priority.

And secondly, carrying out channel coding and modulation on the L source code blocks, wherein different channel coding parameters and modulation parameters can be given to each source code block according to different first priorities, and the channel coding parameters comprise CRC check bits and coding efficiency, and the modulation parameters can be modulation orders and the like. And after channel coding modulation, Q modulation symbol blocks are obtained, and the resource priority corresponding to each modulation symbol block is positively correlated with the first priority.

And thirdly, mapping the Q modulation symbol blocks to Q candidate delay Doppler domain resource blocks, wherein the resource priority of the modulation symbol blocks is positively correlated with the pilot frequency distance of the candidate delay Doppler domain resource blocks. In one implementation, different transmit powers may be used to distinguish between different resource priority modulation symbol blocks of candidate delay-doppler-domain resource blocks mapped to the same pilot distance, if further prioritization is required.

In addition, the delay Doppler domain resource hierarchical mapping method provided by the application not only can be used for a scene of source channel coding, but also can be used for improving the mapping mode of control and data channels in the existing system. Specifically, in the scenario that the control information of the control channel and the information bits of the data channel are mapped in the same delay-doppler domain, better transmission reliability is given to the control information by distinguishing the coding and modulation modes, and in the scenario that the control information exists, the candidate delay-doppler domain resource blocks with the pilot frequency distance meeting the preset condition can be always allocated to the control information, so that the reliability of the control channel is further improved by giving better candidate delay-doppler domain resources to the control information.

In the above embodiment, the signaling interaction manner may be further defined. For example, the first communication device needs to indicate the mapping relationship between the source code block and the channel coding parameter to the second communication device, and also needs to indicate the modulation parameter, and then the first communication device may directly indicate by transmitting uplink or downlink control information to the second communication device, or may also indicate a set of optional values in protocol preset or physical resource control (Radio resource control, RRC) information, where the uplink or downlink control information indicates the first index, and the second communication device may query the optional values according to the first index.

In addition, the first communication device needs to indicate the correspondence between each modulation symbol block and each candidate delay-doppler domain resource block, and the position of the candidate delay-doppler domain resource block, and if the modulation symbol blocks with different resource priorities are allocated with different transmission powers, then the first communication device needs to indicate the transmission power corresponding to each modulation symbol block. The first communication device may directly indicate through RRC, or may 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 may query among the optional values according to the second index.

Wherein the location information includes at least one of:

delay domain locations of candidate delay-doppler domain resource blocks;

doppler domain locations of candidate delay Doppler domain resource blocks;

offset between the candidate delay-doppler domain resource block and a preset reference point;

delay domain offset between the candidate delay-doppler-domain resource block and a preset reference point;

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

the size of the resources occupied by the candidate delay-doppler domain resource blocks;

the preset reference point is any point in a delay-doppler domain resource block corresponding to a pilot delay-doppler domain resource block or a protection region of pilot information.

According to the resource mapping method provided by the embodiment of the application, the execution body can be a resource mapping device. In the embodiment of the present application, a method for executing resource mapping by using a resource mapping device is taken as an example, and the resource mapping device provided in the embodiment of the present application is described.

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

an acquisition module 201, configured to acquire information bits and pilot information;

a code modulation module 202, configured to code-modulate the information bits to obtain at least one modulation symbol block;

and a 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 candidate delay-doppler domain resource block that is matched according to a resource priority corresponding to the modulation symbol block, so as to obtain a delay-doppler signal corresponding to the information bit, where the resource priority is positively correlated with a pilot distance, and the pilot distance is a distance between the candidate delay-doppler domain resource block and the pilot delay-doppler domain resource block.

In one implementation, the code modulation module 202 is specifically configured to:

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

determining a code modulation parameter corresponding to the source code block according to the first priority;

and carrying out code modulation on the corresponding source code blocks based on the determined code modulation parameters to obtain at least one modulation symbol block, wherein the resource priority corresponding to the modulation symbol block is positively correlated with the first priority.

and determining channel coding parameters and modulation parameters corresponding to the source code blocks according to the first priority.

the first communication equipment respectively determines channel coding parameters and modulation parameters corresponding to source code blocks with different first priorities; or alternatively, the first and second heat exchangers may be,

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

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

determining channel coding parameters corresponding to the source code blocks according to the second priority;

performing channel coding on the corresponding source code blocks based on the determined channel coding parameters to obtain at least one coding code block, wherein the coding code block has a third priority, and the third priority is positively related to the second priority;

determining a modulation parameter corresponding to the coding code block according to the third priority;

and modulating the code block based on the determined modulation parameter to obtain at least one modulation symbol block, wherein the resource priority corresponding to the modulation symbol block is positively correlated with the third priority.

the first communication equipment respectively determines channel coding parameters corresponding to source code blocks with different second priorities; or alternatively, the first and second heat exchangers may be,

the first communication equipment divides at least two adjacent source code blocks of the second priority into a group according to the sequence from high to low of the second priority, and respectively determines channel coding parameters corresponding to each group of source code blocks;

the first communication device determines a modulation parameter corresponding to the code block according to the third priority, including:

the first communication equipment respectively determines modulation parameters corresponding to the code blocks with different third priorities; or alternatively, the first and second heat exchangers may be,

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

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

and 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, in case the information bits include data information and control information, the apparatus further includes:

the transmission module is used for transmitting the delay Doppler signal to second communication equipment so that the second communication equipment decodes the delay Doppler signal according to the control information to obtain the information bit; the control information includes a code modulation parameter for decoding the delay Doppler signal, or the control information includes a first index, where the first index is used to query the code modulation parameter in a preset protocol or physical resource control information.

In one implementation, the transmission module is configured to:

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

and the first communication equipment transmits the delay Doppler signal and the downlink control information corresponding to the modulation symbol block to the second communication equipment based on the transmitting power of the modulation symbol block.

In an implementation manner, the delay doppler signal further includes the physical resource control information, where the physical resource control information includes reference information, or the downlink control information includes a second index, where the second index is used to query the reference information in a preset protocol or the physical resource control information; the reference information includes location information of the delay-doppler-domain resource block and a correspondence between the delay-doppler-domain resource block and the modulation symbol block.

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

delay domain locations of the candidate delay-doppler domain resource blocks;

doppler domain locations of the candidate delay Doppler domain resource blocks;

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

delay domain offset between the candidate delay-doppler-domain resource block and the preset reference point;

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

the size of the resources occupied by the candidate delay Doppler domain resource blocks;

the preset reference point is any point in a pilot delay-doppler domain resource block or a delay-doppler domain resource block corresponding to a protection region of the pilot information.

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

randomly determining a pilot frequency delay Doppler domain resource block from a delay Doppler domain, and mapping the pilot frequency information to the pilot frequency delay Doppler domain resource block;

and mapping the at least one modulation symbol block onto the matched candidate delay Doppler domain resource blocks according to the resource priority of the pilot frequency distance between the candidate delay Doppler domain resource blocks and the pilot frequency delay Doppler domain resource blocks and the corresponding modulation symbol block, so as to obtain the delay Doppler signal corresponding to the information bit, wherein the candidate delay Doppler domain resource blocks are other delay Doppler domain resource blocks except the pilot frequency delay Doppler domain resource blocks in the delay Doppler domain.

The resource mapping device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, so that repetition is avoided, and details are not repeated here.

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

The resource mapping device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and in order to avoid repetition, a description is omitted here.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a communication device 300, including a processor 301 and a memory 302, where a program or an instruction capable of running on the processor 301 is stored in the memory 302, and the program or the instruction implements each step of the above-mentioned resource mapping method embodiment when executed by the processor 301, and the steps achieve the same technical effects, so that repetition is avoided, and no further description is given here.

It should be noted that, the terminal device in the embodiment of the present application includes the mobile terminal device and the non-mobile terminal device described above.

Fig. 9 is a schematic hardware structure of a terminal device implementing 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, and processor 910.

Those skilled in the art will appreciate that the terminal device 900 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 910 by a power management system to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal device structure shown in fig. 9 does not constitute a limitation of the terminal device, and the terminal device may include more or less components than those shown in the drawings, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 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 at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also referred to as a 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, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from a network side device, the radio frequency unit 901 may transmit the downlink data to the processor 910 for processing; in addition, the radio frequency unit 901 may send uplink data to the network side device. Typically, 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, and the like.

The 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 storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 910.

Wherein the processor 910 is configured to obtain information bits and pilot information; performing code modulation on the information bits to obtain at least one modulation symbol block; and mapping the pilot frequency information to a pilot frequency delay Doppler domain resource block, and mapping the at least one modulation symbol block to a matched candidate delay Doppler domain resource block according to the resource priority corresponding to the modulation symbol block to obtain a delay Doppler signal corresponding to the information bit, wherein the resource priority is positively correlated with a pilot frequency distance, and the pilot frequency distance is the distance between the candidate delay Doppler domain resource block and the pilot frequency delay Doppler domain resource block.

In this way, based on the resource priority of the modulation symbol blocks, the modulation symbol blocks with higher priority are mapped to the delay-doppler-domain resource blocks with longer distance from the pilot frequency information, so that even if the pilot frequency guard interval is reduced, the mutual interference between the pilot frequency and the information bits can be avoided as much as possible, thereby improving the demodulation performance.

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

Optionally, the processor 910 is further configured to:

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

Optionally, in the case that the information bit includes data information and control information, the radio frequency unit 901 is configured to transmit the delay-doppler signal to a second communication device, so that the second communication device decodes the delay-doppler signal according to the control information to obtain the information bit;

the control information includes a code modulation parameter for decoding the delay Doppler signal, or the control information includes a first index, where the first index is used to query the code modulation parameter in a preset protocol or physical resource control information.

Optionally, the radio frequency unit 901 is configured to:

determining the transmitting power of each modulation symbol block according to the resource priority, wherein the transmitting power is positively related to the resource priority;

and transmitting the delay Doppler signal and the downlink control information corresponding to the modulation symbol block to second communication equipment based on the transmitting power of the modulation symbol block.

Optionally, the delay doppler signal further includes the physical resource control information, where the physical resource control information includes reference information, or the downlink control information includes a second index, where the second index is used to query the reference information in a preset protocol or the physical resource control information; the reference information includes location information of the candidate delay-doppler-domain resource block and a correspondence between the candidate delay-doppler-domain resource block and the modulation symbol block.

Optionally, the location information includes at least one of:

delay domain locations of the candidate delay-doppler domain resource blocks;

doppler domain locations of the candidate delay Doppler domain resource blocks;

Optionally, the processor 910 is further configured to:

and mapping the at least one modulation symbol block to the matched candidate delay Doppler domain resource blocks according to the resource priority corresponding to the modulation symbol block from the pilot frequency between the candidate delay Doppler domain resource blocks and the pilot frequency delay Doppler domain resource blocks to obtain the delay Doppler signal corresponding to the information bit, wherein the candidate delay Doppler domain resource blocks are other delay Doppler domain resource blocks except the pilot frequency delay Doppler domain resource blocks in the delay Doppler domain.

The embodiment of the present application further provides a network side device, as shown in fig. 10, where 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. The antenna 1001 is connected to a radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information via the antenna 1001, and transmits the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes information to be transmitted, and transmits the processed information to the radio frequency device 1002, and the radio frequency device 1002 processes the received information and transmits the processed information through the antenna 1001.

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

The baseband apparatus 1003 may, for example, include at least one baseband board, where a plurality of chips are disposed on the baseband board, as shown in fig. 10, where one chip, for example, a baseband processor, is connected to the memory 1005 through a bus interface, so as to call a program in the memory 1005 to perform the network device operation shown in the above method embodiment.

The network side device may also include a network interface 1006, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1000 of the embodiment of the present invention further includes: instructions or programs stored in the memory 1005 and executable on the processor 1004, the processor 1004 invokes the instructions or programs in the memory 1005 to perform the method performed by the modules shown in fig. 6, and achieve the same technical effects, so repetition is avoided and will not be described herein.

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

Specifically, the network side device 1100 of the embodiment of the present invention further includes: instructions or programs stored in the memory 1103 and capable of running on the processor 1101, the processor 1101 calls the instructions or programs in the memory 1103 to execute the method executed by each module shown in fig. 2, and achieve the same technical effects, so that repetition is avoided, and therefore, the description is omitted herein.

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

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or an instruction, implement each process of the above embodiment of the resource mapping method, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where 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 each process of the above-mentioned resource mapping method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a resource mapping system, which comprises: the terminal can be used for executing the steps of the resource mapping method, and the network side device can be used for executing the steps of the resource mapping method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method for mapping resources, comprising:

2. The method of claim 1, wherein the first communication device code-modulates the information bits to obtain at least one block of modulation symbols, comprising:

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

the first communication equipment determines the code modulation parameters corresponding to the source code blocks according to the first priority;

The first communication device carries out code modulation on the corresponding source code blocks based on code modulation parameters to obtain at least one modulation symbol block, and the resource priority corresponding to the modulation symbol block is positively correlated with the first priority.

3. The method of claim 2, wherein the first communication device determining, according to the first priority, a coded modulation parameter corresponding to the source code block, comprises:

and the first communication equipment determines channel coding parameters and modulation parameters corresponding to the source code blocks according to the first priority.

4. The method of claim 2, wherein the first communication device determining, according to the first priority, a coded modulation parameter corresponding to the source code block, comprises:

5. The method of claim 1, wherein the first communication device code-modulates the information bits to obtain at least one block of modulation symbols, comprising:

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

the first communication equipment determines channel coding parameters corresponding to the source code blocks according to the second priority;

the first communication equipment carries out channel coding on the corresponding source code blocks based on the determined channel coding parameters to obtain at least one coding code block, wherein the coding code block has a third priority, and the third priority is positively related to the second priority;

the first communication equipment determines a modulation parameter corresponding to the coding code block according to the third priority;

and the first communication equipment modulates the 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 correlated with the third priority.

6. The method of claim 5, wherein the first communication device determining the channel coding parameters corresponding to the source code blocks according to the second priority comprises:

7. The method of claim 1, wherein the information bits comprise data information or the information bits comprise: control information, or the information bits include: the data information and the control information are provided,

8. The method of claim 7, wherein in the case where the information bits include data information and control information, the method further comprises:

the first communication device transmits the delay Doppler signal to a second communication device, so that the second communication device decodes the delay Doppler signal according to the control information to obtain the information bit;

9. The method of claim 8, wherein the first communication device transmitting the delay-doppler signal to a second communication device comprises:

the first communication device transmits a delay-doppler signal corresponding to the modulation symbol block to a second communication device based on the transmission power of the modulation symbol block.

10. The method of claim 8, wherein the delay-doppler signal further comprises the physical resource control information, the physical resource control information comprises reference information, or the control information comprises a second index, and the second index is used for querying the reference information in a preset protocol or the physical resource control information; the reference information includes location information of the candidate delay-doppler-domain resource block and a correspondence between the candidate delay-doppler-domain resource block and the modulation symbol block.

11. The method of claim 10, wherein the location information comprises at least one of:

delay domain locations of the candidate delay-doppler domain resource blocks;

doppler domain locations of the candidate delay Doppler domain resource blocks;

12. The method of claim 1, wherein the first communication device maps the pilot information to pilot delay-doppler-domain resource blocks and maps the at least one modulation symbol block to a matching candidate delay-doppler-domain resource block according to the resource priority corresponding to the modulation symbol block to obtain the delay-doppler signal corresponding to the information bit, comprising:

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

and the first communication equipment maps the at least one modulation symbol block to the matched candidate delay Doppler domain resource blocks according to the pilot frequency distance between the candidate delay Doppler domain resource blocks and the pilot frequency delay Doppler domain resource blocks and the resource priority of the modulation symbol block to obtain the delay Doppler signals corresponding to the information bits, wherein the candidate delay Doppler domain resource blocks are other delay Doppler domain resource blocks except the pilot frequency delay Doppler domain resource blocks in the delay Doppler domain.

13. An apparatus for resource mapping, comprising:

14. The apparatus of claim 13, wherein the code modulation module is specifically configured to:

15. The apparatus of claim 14, wherein the code modulation module is specifically configured to:

16. The apparatus of claim 14, wherein the code modulation module is specifically configured to:

17. The apparatus of claim 13, wherein the code modulation module is specifically configured to:

and modulating the code block based on the determined modulation parameter to obtain at least one modulation symbol block, wherein the resource priority corresponds to the modulation symbol block, and the resource priority is positively related to the third priority.

18. The apparatus of claim 17, wherein the code modulation module is specifically configured to:

19. The apparatus of claim 13, wherein the information bits comprise data information or the information bits comprise: control information, or the information bits include: the data information and the control information are provided,

20. The apparatus of claim 19, wherein in the case where the information bits include data information and control information, the apparatus further comprises:

21. The apparatus of claim 20, wherein the transmission module is configured to:

22. The apparatus of claim 20, wherein the delay-doppler signal further comprises the physical resource control information, wherein the physical resource control information comprises reference information, or wherein the control information comprises a second index, and wherein the second index is used for querying the reference information in a preset protocol or the physical resource control information; the reference information includes location information of the candidate delay-doppler-domain resource block and a correspondence between the candidate delay-doppler-domain resource block and the modulation symbol block.

23. The apparatus of claim 22, wherein the location information comprises at least one of:

delay domain locations of the candidate delay-doppler domain resource blocks;

doppler domain locations of the candidate delay Doppler domain resource blocks;

24. The apparatus of claim 13, wherein the mapping module is specifically configured to:

25. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the resource mapping method of any of claims 1 to 12.

26. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the resource mapping method according to any of claims 1-12.