WO2024055729A1

WO2024055729A1 - Channel resource mapping method and apparatus, storage medium and electronic apparatus

Info

Publication number: WO2024055729A1
Application number: PCT/CN2023/105955
Authority: WO
Inventors: 田科; 李军; 吕博; 史雅茹; 王卫乔; 王得名; 陈帅
Original assignee: 三维通信股份有限公司
Priority date: 2022-09-15
Filing date: 2023-07-05
Publication date: 2024-03-21
Also published as: CN115484684B; CN115484684A

Abstract

Disclosed in the present application are a channel resource mapping method and apparatus, a storage medium and an electronic apparatus. The channel resource mapping method comprises: acquiring avoidance mapping grids occupied, in candidate mapping grids, by reference signals comprised in a physical downlink shared channel (PDSCH) of target resources to be mapped, wherein the candidate mapping grids are mapping grids for positioning the target resources by means of time-frequency domain positions; sorting target mapping grids other than the avoidance mapping grids in the candidate mapping grids, so as to obtain a resource mapping table; and according to the resource mapping table, controlling the target resources to be mapped to the target mapping grids. By using the above technical solution, the problems in the related art such as high complexity of channel resource mapping are solved.

Description

Channel resource mapping method and device, storage medium and electronic device

This application claims priority to the Chinese patent application filed with the China Patent Office on September 15, 2022, with the application number 202211123497.7 and the invention title "Channel Resource Mapping Method and Device, Storage Medium and Electronic Device", the entire content of which is incorporated by reference. incorporated in this application.

Technical field

The present application relates to the field of communications, and in particular, to a channel resource mapping method and device, a storage medium, and an electronic device.

Background technique

All high-level signaling and business data in the 5G-NR (New Radio) system are carried on the PDSCH (Physical Downlink Shared CHannel, physical downlink shared channel), which needs to be transmitted through scheduling, which greatly increases the amount of scheduled traffic. increase, while the requirements for flexibility in resource allocation have also increased significantly. PDSCH maps virtual resource blocks allocated to users by higher layers to physical resource blocks through specific mapping relationships to achieve flexible allocation of resources. In the NR system, the downlink physical channels are reduced to three, namely PBCH (Physical Broadcast Channel, physical broadcast channel), PDCCH (Physical Downlink Control Channel, physical downlink control channel), and PDSCH. Downlink reference signals mainly include SSB (Synchronization Signaling Block, synchronous broadcast block), DMRS (DeModulation Reference Signal, demodulation reference signal), CSI-RS (Channel State Information-Reference Signal, channel state information reference signal). Since the reference signals occupy specific RE (Resource Element, resource particle) positions in the downlink time-frequency resource grid, PDSCH needs to avoid these signals during the resource mapping process, which makes the logic complex and increases the difficulty of implementation.

Currently, when mapping PDSCH channel resources, specific REs occupied by SSB, CORESET (Control-Resource Set, Control Resource Set), DMRS and CSI-RS need to be eliminated. Traditional PDSCH channel resource mapping methods are implemented based on protocol standards, namely First, the time domain and frequency domain resources occupied by SSB, CORESET, DMRS, CSI-RS and PDSCH in a time slot are sequentially numbered in ascending order starting from 0, and then the SSB, CORESET, DMRS and CSI-RS signals and RE positions of PDSCH resource conflicts. Finally, when performing resource mapping data, the conflicting RE positions are skipped.

No effective solution has yet been proposed for the problem of high complexity in channel resource mapping in related technologies.

Contents of the invention

Embodiments of the present application provide a channel resource mapping method and device, a storage medium, and an electronic device to at least solve the problem of high complexity in channel resource mapping in related technologies.

According to an embodiment of the present application, a channel resource mapping method is provided, including:

Obtain the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is a mapping of the target resource through time and frequency domain positions. Mapping grid for positioning;

Sort the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table;

Control the mapping of the target resource to the target mapping grid according to the resource mapping table.

Optionally, the obtaining the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel of the target resource to be mapped in the candidate mapping grid includes:

Obtain first configuration information from the transmission protocol corresponding to the PDSCH, where the first configuration information is used to indicate the allocation method of time-frequency domain resources in the PDSCH;

Determine the corresponding reference time-frequency domain position of the reference signal in the candidate mapping grid according to the first configuration information;

The mapping grid indicated by the reference time-frequency domain position is determined as the avoidance mapping grid.

Optionally, before obtaining the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, the method further includes:

Obtain second configuration information from the transmission protocol corresponding to the PDSCH, where the second configuration information is used to indicate the allocated time-frequency domain position of the PDSCH in all channel positions;

Obtain an initial time-frequency domain position that satisfies the second configuration information from an initial mapping grid, where the initial mapping grid is constructed from all channel locations;

The mapping grid constructed from the initial time-frequency domain position is determined as the candidate mapping grid.

Optionally, sorting the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table, including:

Number each time-frequency domain position in the target mapping grid to obtain a sequence number set;

Record each sequence number and each time-frequency domain position in the sequence number set with a corresponding relationship to obtain the resource mapping table.

Optionally, number each time-frequency domain position in the target mapping grid to obtain a sequence number set, including:

Number the time-frequency domain positions included in the target time domain in the target mapping grid according to frequency domain order;

When the time-frequency domain positions belonging to the target time domain are numbered, the time-frequency domain positions included in the next time domain of the target time domain in the target mapping grid continue to be numbered in frequency domain order. , until all time-frequency domain positions in the target mapping grid are numbered, and the sequence number set is obtained.

Optionally, controlling the mapping of the target resource to the target according to the resource mapping table The mapping grid includes:

Obtain each candidate resource in the target resource;

Read the target sequence number matching each candidate resource from the resource mapping table, where the resource mapping table records the corresponding sequence number and the time-frequency domain position in the target mapping grid. , the sequence number is obtained by numbering each time-frequency domain position in the target mapping grid;

Each candidate resource is mapped to a time-frequency domain position corresponding to the target sequence number.

Optionally, reading the target sequence number matching each candidate resource from the resource mapping table includes:

Determine the resource size of each candidate resource;

One or more sequence numbers whose amount of resources allowed to be carried match the resource size are read from the resource mapping table as the target sequence number.

According to another embodiment of the embodiment of the present application, a channel resource mapping device is also provided, including:

The first acquisition module is configured to acquire the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is the pass time Frequency domain position mapping grid for locating the target resource;

A sorting module configured to sort the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table;

A mapping module configured to control the mapping of the target resource into the target mapping grid according to the resource mapping table.

According to yet another aspect of the embodiment of the present application, a computer-readable storage medium is also provided. The computer-readable storage medium stores a computer program, wherein the computer program is configured to Set to execute the above channel resource mapping method at runtime.

According to another aspect of the embodiment of the present application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the above-mentioned steps through the computer program. Channel resource mapping method.

In this embodiment of the present application, the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid is obtained, where the candidate mapping grid is a time-frequency domain position A mapping grid for locating target resources; sorting the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table; controlling the mapping of target resources to the target mapping grid according to the resource mapping table , that is, first obtain the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, and then add the avoidance mapping grid in the candidate mapping grid except for the avoidance mapping grid. The target mapping grids are sorted to obtain the resource mapping table. The resource mapping table obtained at this time has already removed the avoidance mapping grids in advance, so the mapping grids to be mapped indicated by the resource mapping table have all avoided the reference signal. , and then directly control the mapping of the target resources to the target mapping grid according to the resource mapping table. Adopting the above technical solution solves the problem of high complexity in mapping channel resources in related technologies, and achieves the technical effect of reducing the complexity of mapping channel resources.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, for those of ordinary skill in the art, It is said that other drawings can be obtained based on these drawings without exerting creative labor.

Figure 1 is a schematic diagram of the hardware environment of a channel resource mapping method according to an embodiment of the present application. picture;

Figure 2 is a flow chart of a channel resource mapping method according to an embodiment of the present application;

Figure 3 is a schematic diagram of PDSCH time domain resource allocation according to an embodiment of the present application;

Figure 4 is a schematic diagram of a channel resource mapping method according to an embodiment of the present application;

Figure 5 is a structural block diagram of a channel resource mapping device according to an embodiment of the present application.

Detailed ways

In order to enable those in the technical field to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of protection of this application.

It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

The method embodiments provided by the embodiments of this application can be executed in a computer terminal, a device terminal, or a similar computing device. Taking running on a computer terminal as an example, FIG. 1 is a schematic diagram of the hardware environment of a channel resource mapping method according to an embodiment of the present application. As shown in Figure 1, the computer terminal may include one or more (only one is shown in Figure 1) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 configured to store data. In an exemplary embodiment, the above-mentioned computer terminal may also include a transmission device 106 configured to have a communication function and an input and output device 108. Persons of ordinary skill in the art can understand that the structure shown in Figure 1 is only illustrative, and it does not limit the structure of the above-mentioned computer terminal. For example, the computer terminal may also include more or fewer components than shown in FIG. 1 , or have a different configuration with equivalent functions or more functions than shown in FIG. 1 .

The memory 104 may be configured to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the message push sending method in the embodiment of the present invention. The processor 102 runs the computer program stored in the memory 104 , thereby executing various functional applications and data processing, that is, implementing the above method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may include memory located remotely relative to the processor 102, and these remote memories may be connected to the computer terminal through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

The transmission device 106 is configured to receive or send data via a network. Optional examples of the above-mentioned network may include a wireless network provided by the communication provider of the computer terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, NIC for short), which can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (Radio Frequency, RF for short) module, which is configured to communicate with the Internet wirelessly.

This embodiment provides a channel resource mapping method, which is applied to the above-mentioned computer terminal. Figure 2 is a flow chart of a channel resource mapping method according to an embodiment of the present application. As shown in Figure 2, the process includes Follow these steps:

Step S202: Obtain the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is determined by the time-frequency domain position pair. The mapping grid for locating the target resources;

Step S204: Sort the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table;

Step S206: Control the mapping of the target resource to the target mapping grid according to the resource mapping table.

Through the above steps, the avoidance mapping grids occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grids are first obtained, and then the target mapping grids in the candidate mapping grids except the avoidance mapping grids are sorted to obtain a resource mapping table. At this time, the resource mapping table obtained has already removed the avoidance mapping grids in advance, so the mapping grids to be mapped indicated by the resource mapping table have already avoided the reference signal, and the target resource can be directly controlled to be mapped to the target mapping grid according to the resource mapping table. The above technical solution solves the problem of high complexity of channel resource mapping in related technologies, and achieves the technical effect of reducing the complexity of channel resource mapping.

In the technical solution provided in step S202 above, the reference signal may include, but is not limited to, Synchronous Broadcast Block (SSB), Demodulation Reference Signal (DMRS), Channel State Information Reference Signal (CSI-RS), etc., since the reference signal occupies the downlink For specific RE positions in the time-frequency resource grid, PDSCH needs to avoid these signals during the resource mapping process. The logic is complex and increases the difficulty of implementation.

Optionally, in this embodiment, the time-frequency domain position may refer to a position positioned in two dimensions: time-domain position and frequency-domain position. That is to say, a uniquely determined time-domain position and a corresponding uniquely determined The frequency domain position can determine the unique time-frequency domain position.

Optionally, in this embodiment, the NR system corresponding to the physical downlink shared channel PDSCH is a 5G system. The time domain scheduling of the 5G system is more precise and flexible, and can handle OFDM (Orthogonal Frequency Divisition Multiplexing, orthogonal) within one time slot. Frequency division multiplexing) symbols for scheduling, and can support both slot-based and non-slot-based scheduling. Like frequency domain scheduling, NR's DCI (Downlink Control Information) has special time domain resource allocation information bits to support different time domain configuration information for PDSCH. Figure 3 is a PDSCH according to an embodiment of the present application. A schematic diagram of time domain resource allocation is shown in Figure 3. These The information includes the PDSCH scheduled time slot offset value K0, time domain starting symbol S and time domain symbol number L.

Optionally, in this embodiment, the frequency domain resource scheduling of PDSCH can be divided into two types: Type0 (Type 0) and Type 1 (Type 1) according to whether the scheduled RB is a continuous RB, where Type0 represents a non-continuous RB. Scheduling, Type1 represents continuous RB scheduling.

Optionally, in this embodiment, RB (Resource Element, time-frequency resource unit) in the NR system is divided into physical resource block (Physical Resource Block, PRB) and virtual resource (Virtual Resource Block, VRB). The frequency domain of PDSCH The mapping of resources from VRB to PRB is divided into two methods: interleaving and non-interleaving. Frequency domain resource allocation type Type0 is allocated based on Resource Block Group (RBG) in the form of bitmap. RBG is a group of consecutively numbered VRBs. The size of RBG, that is, the number of VRBs contained in each RBG, is determined based on the RBG configuration and partial bandwidth (Bandwidth Pant, BWP). The resource allocated to PDSCH in frequency domain resource allocation type Type1 is a non-interleaved or interleaved VRB that is continuously numbered within the BWP. The frequency domain start position RB_start and continuous RB length L of Type1 are determined by the resource indication value (Resource Indication Value, RIV) Field indicates allocation.

In an exemplary embodiment, the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel of the target resource to be mapped in the candidate mapping grid may be, but is not limited to, obtained in the following manner: from the PDSCH Obtain the first configuration information in the corresponding transmission protocol, wherein the first configuration information is used to indicate the allocation method of the time-frequency domain resources in the PDSCH; determine according to the first configuration information where the reference signal is The corresponding reference time-frequency domain position in the candidate mapping grid; determine the mapping grid indicated by the reference time-frequency domain position as the avoidance mapping grid.

Optionally, in this embodiment, the first configuration information may be, but is not limited to, a kind of DCI included in the NR protocol, where the DCI has special time domain resource allocation information bits for carrying different time domain information for PDSCH. Configuration information.

Optionally, in this embodiment, determining the reference time-frequency domain position corresponding to the reference signal in the candidate mapping grid according to the first configuration information may be, but is not limited to, the following process: After receiving the high-level configuration parameters, the mapping positions of the PDSCH channel and signals such as SSB, CORESET, DMRS, and CSI-RS have been determined, so the corresponding resource mapping table can be obtained during parameter preprocessing and calculation.

Optionally, in this embodiment, SSB and CORESET are scheduled in units of RB in the frequency domain. Therefore, the resources occupied by SSB and CORESET in the time domain and frequency domain can be calculated based on RB during preprocessing. When generating the preprocessing table, you only need to multiply by 12; different from the above two signals, DMRS and CSI-RS are scheduled in units of RE in the frequency domain, and the occupancy situation in each RB is consistent. Therefore, DMRS and CSI-RS only need to mark the location within 1 RB in the frequency domain, and the remaining RBs are incremented according to regular rules to obtain the resource mapping table.

In an exemplary embodiment, before the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped is acquired in the avoidance mapping grid occupied by the candidate mapping grid, the reference signal included in the physical downlink shared channel PDSCH may also be obtained from the avoidance mapping grid occupied by the PDSCH. Obtain the second configuration information from the corresponding transmission protocol, wherein the second configuration information is used to indicate the allocated time-frequency domain position of the PDSCH in all channel positions; obtain from the initial mapping grid that satisfies the second The initial time-frequency domain position of the configuration information, wherein the initial mapping grid is constructed from the all channel positions; the mapping grid constructed from the initial time-frequency domain position is determined as the candidate mapping grid.

Optionally, in this embodiment, the second configuration information is used to indicate that the time-frequency domain position allocated to the PDSCH among all channel positions may, but is not limited to, refer to the time for calculating the PDSCH channel resources in the time-frequency mapping grid. Domain position, that is, the starting position and the number of continuous RBs occupied by the PDSCH channel resources in the frequency domain under the entire bandwidth. That is, the starting position and the number of continuous symbols of OFDM symbols in a time slot.

In the technical solution provided in step S204 above, sorting the target mapping grids in the candidate mapping grids except the avoidance mapping grids may be but is not limited to the following process: If there is no For conflicting signals such as SSB, CORESET, DMRS, and CSI-RS, the initial sequence number of the element in the resource mapping table is Rb Start*12RE, and the incremental sequence number is Rb Start*12RE+1, Rb Start*12RE+2,..., Rb Start*12RE+Rb End*12RE; If there are conflicting symbols on the current time domain symbols, you need to delete the symbol positions occupied by the conflicting signals and reorder them. For example, the frequency domain position occupied by a certain control symbol is Rb Start*12+n, then the elements of the resource mapping table are sorted as It becomes Rb Start*12+1, Rb Start*12+2,..., Rb Start*12+n-1, Rb Start*12+n+1, Rb Start*12+Rb End*12. At the same time, the frequency domain resource size occupied by PDSCH on each time domain symbol can be recorded. In this way, when mapping PDSCH resources, you only need to directly read elements from the resource mapping table as the address of the resource mapping grid to complete the mapping of input data.

In an exemplary embodiment, the resource mapping table can be obtained by sorting the target mapping grids in the candidate mapping grids except the avoidance mapping grid in the following manner: Number each time-frequency domain position in the grid to obtain a sequence number set; record each sequence number and each time-frequency domain position in the sequence number set with a corresponding relationship to obtain the resource mapping table .

Optionally, in this embodiment, before processing the resource mapping, the resource mapping grid can be preprocessed to eliminate occupied conflict signals to obtain a resource mapping table in which the frequency domain is rearranged in an incremental manner. s position. When performing resource mapping, you only need to read the input data in order, and at the same time, read the value of the resource mapping table in order as the sequence number of the resource mapping raster, and map the data directly.

In an exemplary embodiment, each time-frequency domain position in the target mapping grid can be numbered in the following manner, but is not limited to, to obtain a sequence number set: The included time-frequency domain positions are numbered according to frequency domain order; when the time-frequency domain positions belonging to the target time domain are numbered, the next time domain of the target time domain in the target mapping grid is The included time-frequency domain positions are continued to be numbered in frequency domain order until all time-frequency domain positions in the target mapping grid are numbered, and the sequence number set is obtained.

Optionally, in this embodiment, each time-frequency domain position in the target mapping grid is numbered, and the sequence number set obtained is numbered in the frequency domain first and then the time domain. When the entire frequency domain position corresponding to the domain is numbered, you can jump to the next time domain. Continue to number the frequency domain position corresponding to the next time domain.

In the technical solution provided in step S206 above, when performing resource mapping, the data to be mapped needs to be stored as input data of the resource mapping module. The input data of resource mapping does not need to consider the order of conflict signals. At the same time, the PDSCH resource mapping input data is arranged in the frequency domain first and then the time domain. In this way, when mapping PDSCH resources, you only need to directly read the elements from the resource mapping table as the address of the resource mapping grid to complete the mapping of the input data. That’s it.

In an exemplary embodiment, the mapping of the target resource to the target mapping grid may be controlled according to the resource mapping table in the following manner: obtaining each candidate resource in the target resource; Read the target sequence number matching each candidate resource from the resource mapping table, where the resource mapping table records the sequence number with the corresponding relationship and the time-frequency domain position in the target mapping grid, so The sequence number is obtained by numbering each time-frequency domain position in the target mapping grid; each candidate resource is mapped to the time-frequency domain position corresponding to the target sequence number.

Optionally, in this embodiment, mapping each candidate resource to the time-frequency domain position corresponding to the target sequence number does not need to consider the situation of being occupied by SSB, CORESET, DMRS or CSI-RS, because The occupied symbols have been processed when generating the resource mapping table. There is no need to consider the RB situation during the mapping process, and a cycle is performed according to the number of actually occupied frequency domain resources in the resource mapping table until all the data in the frequency domain is mapped. At this time, the entire frequency domain mapping of the first symbol ends, and the next symbol is updated until the last time domain symbol ends the cycle. At this point, all PDSCH data resources except the resources occupied by SSB, CORESET, DMRS and CSI-RS are fully mapped. complete.

In an exemplary embodiment, the target sequence number matching each candidate resource may be read from the resource mapping table in the following manner: determining the resource size of each candidate resource; One or more sequence numbers whose amount of resources allowed to be carried match the resource size are read from the resource mapping table as the target sequence number.

Optionally, in this embodiment, the time domain decision starts from the starting symbol i=S, and the frequency domain decision starts from j=Rb Start. First, the number of frequency domain resources actually occupied by the PDSCH on the time domain symbol is obtained as the frequency domain Sign of the end of domain determination. Then the target sequence number is obtained from the resource mapping table as the address of the time-frequency resource mapping raster to map the input data to the specified location. For example, the number of frequency domain resources owned by PDSCH on this time domain symbol is 100, but 30 are already occupied by reference signals. Then the number of frequency domain resources actually occupied by PDSCH on this time domain symbol is 70, and then the number of frequency domain resources occupied by PDSCH on this time domain symbol is 70, and then the number of frequency domain resources occupied by PDSCH on this time domain symbol is 100. Obtain the corresponding 70 resources required, and the corresponding one or more sequence numbers as the target sequence number, and use one or more sequence numbers as the target sequence number as the address of the time-frequency resource mapping grid to input the data Map to the specified location.

In order to better understand the mapping process of the above channel resources, the mapping process of the above channel resources will be described below with reference to optional embodiments, but this is not intended to limit the technical solutions of the embodiments of the present application.

This embodiment provides a channel resource mapping method. Figure 4 is a schematic diagram of a channel resource mapping method according to an embodiment of the present application. As shown in Figure 4, it mainly includes the following steps:

Step S401: Calculate the time domain position of the PDSCH channel resource in the time-frequency mapping grid, that is, the starting position and the number of continuous symbols of OFDM symbols in a time slot;

Step S402: Calculate the frequency domain position of the PDSCH channel resource, that is, the starting position and the number of continuous RBs occupied by the PDSCH channel resource in the frequency domain under the entire bandwidth;

Step S403: SSB, PDSCH Control Resource Set (CORESET), DMRS and CSI-RS will all be mapped to the PDSCH time-frequency domain location, so these signals should be avoided during resource mapping. Based on step S601 and step S602, eliminate specific REs that conflict with the above-mentioned signal and PDSCH time-frequency resources;

Step S404: Complete the data resource mapping of PDSCH.

Through the above embodiments, compared with the traditional method, the resource mapping scheme proposed in this application directly omits the calculation of the reference signal conflict location, and can directly locate the time domain and frequency domain through the resource mapping table. Domain position, thereby completing the corresponding PDSCH resource mapping, the amount of calculation is significantly reduced, and the time consumption during the implementation of the embedded software system is greatly reduced, which has certain significance for improving the performance of the entire system.

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

Figure 5 is a structural block diagram of a channel resource mapping device according to an embodiment of the present application; as shown in Figure 5, it includes:

The first acquisition module 502 is configured to acquire the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is through A mapping grid for positioning the target resource in the time-frequency domain;

The sorting module 504 is configured to sort the target mapping grids in the candidate mapping grids except the avoidance mapping grids to obtain a resource mapping table;

The mapping module 506 is configured to control the mapping of the target resource to the target mapping grid according to the resource mapping table.

Through the above embodiment, firstly, the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid is obtained, and then the avoidance mapping grid is removed from the candidate mapping grid. The target mapping grids outside the grid are sorted to obtain the resource mapping table. The resource mapping table obtained at this time has already removed the avoidance mapping grids in advance, so the mapping grids to be mapped indicated by the resource mapping table have been avoided. a reference letter No., and then directly control the mapping of the target resources to the target mapping grid according to the resource mapping table. Adopting the above technical solution solves the problem of high complexity in mapping channel resources in related technologies, and achieves the technical effect of reducing the complexity of mapping channel resources.

In an exemplary embodiment, the acquisition module includes:

The first acquisition unit is configured to acquire first configuration information from the transmission protocol corresponding to the PDSCH, where the first configuration information is used to indicate the allocation method of time-frequency domain resources in the PDSCH;

A first determination unit configured to determine the corresponding reference time-frequency domain position of the reference signal in the candidate mapping grid according to the first configuration information;

The second determination unit is configured to determine the mapping grid indicated by the reference time-frequency domain position as the avoidance mapping grid.

In an exemplary embodiment, the device further includes:

The second acquisition module is configured to obtain the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped before the avoidance mapping grid occupied in the candidate mapping grid, from the PDSCH corresponding to the Obtaining second configuration information in the transmission protocol, wherein the second configuration information is used to indicate the allocated time-frequency domain position of the PDSCH in all channel positions;

The third acquisition module is configured to acquire the initial time-frequency domain position that satisfies the second configuration information from an initial mapping grid, where the initial mapping grid is constructed from all channel locations;

The determining module is configured to determine the mapping grid constructed by the initial time-frequency domain position as the candidate mapping grid.

In an exemplary embodiment, the sorting module includes:

A numbering unit configured to number each time-frequency domain position in the target mapping grid to obtain a sequence number set;

The recording unit is configured to record each sequence number and each time-frequency domain position in the sequence number set having a corresponding relationship to obtain the resource mapping table.

In an exemplary embodiment, the numbering unit is further configured to:

In an exemplary embodiment, the mapping module includes:

The second acquisition unit is configured to acquire each candidate resource in the target resource;

A reading unit configured to read the target sequence number matching each candidate resource from the resource mapping table, wherein the resource mapping table records the sequence number with the corresponding relationship and the target mapping network. The time-frequency domain position in the grid, the sequence number is obtained by numbering each time-frequency domain position in the target mapping grid;

A mapping unit is configured to map each candidate resource to a time-frequency domain position corresponding to the target sequence number.

In an exemplary embodiment, the reading unit is further configured to:

Determine the resource size of each candidate resource;

Embodiments of the present application also provide a storage medium that includes a stored program, wherein any of the above methods is executed when the program is run.

Optionally, in this embodiment, the above-mentioned storage medium may be configured to store files for execution to Program code for the next steps:

S1. Obtain the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is a pair of the reference signals included in the physical downlink shared channel PDSCH through the time-frequency domain position. The mapping grid for locating target resources;

S2, sort the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table;

S3: Control the mapping of the target resource to the target mapping grid according to the resource mapping table.

An embodiment of the present application also provides an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

Optionally, the above-mentioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the above-mentioned processor, and the input-output device is connected to the above-mentioned processor.

Optionally, in this embodiment, the above-mentioned processor may be configured to perform the following steps through a computer program:

Optionally, in this embodiment, the above storage medium may include but is not limited to: U disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), Various types of mobile hard drives, magnetic disks or CDs can be The medium on which program code is stored.

Optionally, for optional examples in this embodiment, reference may be made to the examples described in the above-mentioned embodiments and optional implementations, which will not be described again in this embodiment.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present application can be implemented using general-purpose computing devices, and they can be concentrated on a single computing device, or distributed across a network composed of multiple computing devices. , optionally, they may be implemented in program code executable by a computing device, such that they may be stored in a storage device for execution by the computing device, and in some cases, may be in a sequence different from that herein. The steps shown or described are performed either individually as individual integrated circuit modules, or as multiple modules or steps among them as a single integrated circuit module. As such, the application is not limited to any specific combination of hardware and software.

The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications can also be made. should be regarded as the scope of protection of this application.

Claims

A channel resource mapping method, including:

Obtain the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is a mapping of the target resource through time and frequency domain positions. Mapping grid for positioning;

Sort the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table;

Control the mapping of the target resource to the target mapping grid according to the resource mapping table.
The method according to claim 1, wherein the obtaining the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel of the target resource to be mapped in the candidate mapping grid includes:

Obtain first configuration information from the transmission protocol corresponding to the PDSCH, where the first configuration information is used to indicate the allocation method of time-frequency domain resources in the PDSCH;

Determine the corresponding reference time-frequency domain position of the reference signal in the candidate mapping grid according to the first configuration information;

The mapping grid indicated by the reference time-frequency domain position is determined as the avoidance mapping grid.
The method according to claim 1, wherein before obtaining the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, the method further include:

Obtain second configuration information from the transmission protocol corresponding to the PDSCH, where the second configuration information is used to indicate the allocated time-frequency domain position of the PDSCH in all channel positions;

Obtain an initial time-frequency domain position that satisfies the second configuration information from an initial mapping grid, where the initial mapping grid is constructed from all channel locations;

The mapping grid constructed from the initial time-frequency domain position is determined as the candidate mapping grid.
The method according to claim 1, wherein said sorting the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table includes:

Number each time-frequency domain position in the target mapping grid to obtain a sequence number set;

Record each sequence number and each time-frequency domain position in the sequence number set with a corresponding relationship to obtain the resource mapping table.
The method according to claim 4, wherein said numbering each time-frequency domain position in the target mapping grid to obtain a sequence number set includes:

Number the time-frequency domain positions included in the target time domain in the target mapping grid according to frequency domain order;

When the time-frequency domain positions belonging to the target time domain are numbered, the time-frequency domain positions included in the next time domain of the target time domain in the target mapping grid continue to be numbered in frequency domain order. , until all time-frequency domain positions in the target mapping grid are numbered, and the sequence number set is obtained.
The method according to claim 1, wherein the controlling the mapping of the target resource to the target mapping grid according to the resource mapping table includes:

Obtain each candidate resource in the target resource;

Read the target sequence number matching each candidate resource from the resource mapping table, where the resource mapping table records the corresponding sequence number and the time-frequency domain position in the target mapping grid. , the sequence number is obtained by numbering each time-frequency domain position in the target mapping grid;

Each candidate resource is mapped to a time-frequency domain position corresponding to the target sequence number.
The method according to claim 6, wherein reading the target sequence number matching each candidate resource from the resource mapping table includes:

Determine the resource size of each candidate resource;

One or more sequence numbers whose amount of resources allowed to be carried match the resource size are read from the resource mapping table as the target sequence number.
A channel resource mapping device, including:

The first acquisition module is configured to acquire the avoidance mapping grid occupied by the reference signal included in the physical downlink shared channel PDSCH of the target resource to be mapped in the candidate mapping grid, wherein the candidate mapping grid is the pass time Frequency domain position mapping grid for locating the target resource;

A sorting module configured to sort the target mapping grids in the candidate mapping grids except the avoidance mapping grid to obtain a resource mapping table;

A mapping module configured to control the mapping of the target resource into the target mapping grid according to the resource mapping table.
A computer-readable storage medium includes a stored program, wherein the method of any one of claims 1 to 7 is executed when the program is run.
An electronic device includes a memory and a processor, a computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.