CN116528367A

CN116528367A - Information transmission method and device, network side equipment and terminal

Info

Publication number: CN116528367A
Application number: CN202210074906.2A
Authority: CN
Inventors: 袁璞; 秦飞; 纪子超; 潘学明; 刘昊; 姜大洁
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2023-08-01
Also published as: WO2023138633A1

Abstract

The application discloses an information transmission method, an information transmission device, network side equipment and a terminal, which belong to the field of mobile communication, and the information transmission method in the embodiment of the application comprises the following steps: the network side equipment sends first information to a first terminal; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2; and the network side equipment transmits first modulation data with the first terminal according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

Description

Information transmission method and device, network side equipment and terminal

Technical Field

The application belongs to the technical field of mobile communication, and particularly relates to an information transmission method, an information transmission device, network side equipment and a terminal.

Background

In a complex electromagnetic wave transmission environment in a city, inter-symbol interference ISI (Inter Symbol Interference) is generated in the time domain and inter-carrier interference ICI (Inter Carrier Interference) is generated in the frequency domain due to the presence of a large number of scattering, reflection and refraction surfaces. For this purpose, other modulation schemes are introduced, taking orthogonal Time-Frequency space (Orthogonal Time Frequency Space, OTFS) modulation as an example, the core of the OTFS modulation is that the transmitting end transmits data mapped on the Delay Doppler (DD) domain, such as quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) symbols (Symbol), through inverse-octal fourier transform (Inverse Sympletic Finite Fourier Transform, ISFFT) to the Time-Frequency (TF) domain (domain), and then returns to the Delay Doppler domain for processing through octal fourier transform (Sympletic Finite Fourier Transform, SFFT) at the receiving end.

When the OTFS modulated channel is estimated, a transmitting end maps pilot frequency pulses to a delay Doppler domain, and a receiving end estimates the channel response of the delay Doppler domain by utilizing the delay Doppler image analysis of the pilot frequency. The channel estimation is not accurate enough due to poor delay resolution and Doppler resolution when performing OTFS modulation channel estimation.

Disclosure of Invention

The embodiment of the application provides an information transmission method, an information transmission device, network side equipment and a terminal, which can solve the problem that channel estimation is inaccurate due to poor delay resolution and Doppler resolution when OTFS modulation channel estimation is carried out.

In a first aspect, an information transmission method is provided, applied to a network side device, and the method includes:

the network side equipment sends first information to a first terminal; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2;

and the network side equipment performs the first modulation data transmission with the first terminal according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

In a second aspect, there is provided an apparatus for information transmission, comprising:

the configuration module is used for sending first information to the first terminal; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2;

and the transmission module is used for transmitting the first modulation data with the first terminal according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

In a third aspect, an information transmission method is provided, applied to a first terminal, and the method includes:

the first terminal receives first information from network side equipment; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2;

And the first terminal transmits the first modulation data with the network side equipment according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

In a fourth aspect, there is provided an apparatus for information transmission, comprising:

the configuration module is used for receiving the first information from the network side equipment; the device supports transmission of first modulation data, wherein the first information is used for indicating position information of N first symbols occupied by the first modulation data in L multiplied by N symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in the L multiplied by N symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2;

and the transmission module is used for transmitting the first modulation data with the network side equipment according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

In a fifth aspect, there is provided an information transmission method applied to a second terminal, the method including:

the second terminal receives second information from the network side equipment; the second terminal is a terminal supporting transmission of second modulation data, the second information is used for indicating the second terminal to transmit the second modulation data at a position where a second symbol is located, the second symbol is a symbol except for N first symbols in the l×n symbols, the N first symbols are N symbols occupied by the first modulation data in the l×n symbols of the time-frequency domain resource, the N first symbols are arranged at intervals in the l×n symbols of the time-frequency domain resource, the first modulation data is data for converting data mapped in a first signal domain into data located in a time-frequency domain, N is a number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2;

And the second terminal transmits the second modulation data with the network side equipment according to the position of the second symbol.

In a sixth aspect, there is provided an apparatus for information transmission, comprising:

the configuration module is used for receiving second information from the network side equipment; the device is a terminal supporting transmission of second modulated data, the second information is used for indicating a position where a second symbol is located to perform transmission of the second modulated data, the second symbol is a symbol except for N first symbols in the l×n symbols, the N first symbols are N symbols occupied by the first modulated data in the l×n symbols of the time-frequency domain resource, the N first symbols are arranged at intervals in the l×n symbols of the time-frequency domain resource, the first modulated data is data that transforms data mapped in a first signal domain to data located in a time-frequency domain, N is a number of symbols included in each time slot, and L is a positive integer greater than or equal to 2;

and the transmission module is used for transmitting the second modulation data with the network side equipment according to the position of the second symbol.

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

An eighth aspect provides a network side device, including a processor and a communication interface, where the processor is configured to determine location information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, and the communication interface is configured to send the first information to a first terminal; and carrying out the first modulation data transmission with the first terminal according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

In a ninth aspect, there is provided a terminal 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 tenth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine location information of the N first symbols in the lxn symbols of the time-frequency domain resource according to first information, and the communication interface is configured to receive the first information from a network side device; and transmitting the first modulation data with the network side equipment according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

An eleventh aspect provides an information transmission system, comprising: a terminal operable to perform the steps of the information transmission method according to the third or fifth aspect, and a network side device operable to perform the steps of the information transmission method according to the first aspect.

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

In a thirteenth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions to implement the method according to the first aspect, or to implement the method according to the third aspect, or to implement the method according to the fifth aspect.

In a fourteenth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to implement the steps of the method as described in the first, third or fifth aspects.

In this embodiment of the present application, first information is sent to a first terminal through a network side device, where the first information is used to indicate position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, where the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource; according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource, the network side equipment transmits the first modulation data with the first terminal; therefore, by widening the signal time, the Doppler resolution is increased, and the channel estimation accuracy of OTFS modulation is improved.

Drawings

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

fig. 2 is a schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a time-frequency domain resource configuration according to an embodiment of the present application;

fig. 4 is a schematic diagram of another time-frequency domain resource configuration provided in an embodiment of the present application;

fig. 5 is a schematic diagram of another time-frequency domain resource configuration provided in an embodiment of the present application;

fig. 6 is a schematic diagram of another time-frequency domain resource configuration provided in an embodiment of the present application;

Fig. 7 is a schematic diagram of another time-frequency domain resource configuration provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

fig. 9 is a flowchart of another information transmission method according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another information transmission device according to an embodiment of the present application;

fig. 11 is a flowchart of another information transmission method according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another information transmission device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a network side device implementing an embodiment of the present application;

fig. 15 is a schematic structural diagram of a terminal for implementing 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 FrequencyDivision 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 is used in much of the description that follows NR terminology, but these techniques can also be applied to applications other than NR system applications, such as generation 6 (6 ^th 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 transmitting/receiving point (TransmittingReceivingPoint, 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: a core network node, a core network function, a mobility management entity (Mobility Management Entity, MME), an access mobility management function (Access and Mobility Management Function, AMF), a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), a policy control function (Policy Control Function, PCF), a policy and charging rules function (Policy and Charging Rules Function, PCRF), an edge application service discovery function (EdgeApplicationServerDiscoveryFunction, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), a home subscriber server (Home Subscriber Server, HSS), a centralized network configuration (Centralized network configuration, CNC), a network storage function (Network Repository Function, NRF), a network opening function (NetworkExposureFunction, NEF), a local NEF (LocalNEF, or L-NEF), a binding support function (Binding Support Function, BSF), an application function (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 information transmission 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.

As shown in fig. 2, the embodiment of the present application provides an information transmission method, where the execution body of the method is a network side device, in other words, the method may be executed by software or hardware installed in the network side device. The method comprises the following steps.

Step 210, the network side equipment sends first information to the first terminal; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, and L is a positive integer greater than or equal to 2.

The information transmission system of the embodiment of the application may include two types of terminals, namely a first terminal and a second terminal, where the first terminal is a terminal supporting transmission of first modulation data, and the second terminal is a terminal supporting transmission of second modulation data.

It should be understood that the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, and the first signal domain may be a delay doppler domain, a delay time domain, a delay sequence domain, or a delay angle domain. For simplicity, the delay-doppler domain is taken as an example in the following embodiments, and accordingly, the first modulation is OTFS modulation, and the first modulation data is OTFS data or OTFS symbols.

It should be appreciated that the second modulation is orthogonal frequency division multiplexing (Orthogonal frequency division multiplex, OFDM) modulation and the second modulated data is OFDM data or OFDM symbols. The OFDM modulation may specifically be Cyclic prefix orthogonal frequency division multiplexing (Cyclic prefix-Orthogonal frequency division multiplex, CP-OFDM) modulation or discrete fourier transform spread orthogonal frequency division multiplexing (Discrete Fourier Transform-Size-Orthogonal frequency division multiplex, DFT-S-OFDM) modulation.

The system may employ different modulation waveforms depending on the requirements of different terminals, e.g., OTFS for high mobility terminals as a first terminal and OFDM modulation for low mobility users as a second terminal. For a terminal supporting two modulation modes at the same time, switching can be performed at the time slot or symbol level according to actual requirements.

The network side device may configure, for the first terminal, time-frequency domain resources for mapping the first modulation data by sending first information to the first terminal. As shown in fig. 3, the dot-pattern in the figure is the position of the first symbol occupied by the first modulation data.

In one embodiment, the first information may be in at least one of the following forms:

a system information block (System Information Block, SIB) broadcast signal;

radio resource control (Radio Resource Control, RRC) signaling;

downstream control information (DownlinkControlInformation, DCI).

The first information and the second information may be the same piece of information, i.e. the content indicated by the first information and the second information may be contained in the same piece of information.

The channel estimation accuracy of the OTFS modulation depends on the delay resolution Δτ and the doppler resolution Δv, i.e.:

wherein τ _r To delay the size of the resource, v _r For the size of the doppler resource, M and N are the number of resource bins in the delay direction and the number of resource bins in the doppler direction of the DD domain, respectively, Δf is the subcarrier spacing, and T is the time of one symbol.

As can be seen from the above equation, the way to increase the resolution is to increase the signal bandwidth, i.e., mΔf, or increase the signal time, i.e., NT, and thus the channel estimation accuracy of OTFS modulation can be improved by increasing the value of N to increase the doppler resolution.

The OFTS modulation is first modulation data to be mapped in the delay-doppler domain, for example, QAM symbols, and transformed into the time-frequency domain by the ISFFT. If there is a QAM symbol set of NxM, X _NM ＝[X ₁ ,X ₂ ,…,X _N ]Wherein the QAM symbol X _n Representing the nth column vector, N and M correspond to the doppler domain and delay domain, respectively. X is X _NM Obtaining a transformed symbol set s in the time-frequency domain by ISFFT _NM ＝[s ₁ ,s ₂ ,…,s _N ]Wherein s is _n And N and M at the moment correspond to a time domain and a frequency domain respectively for the OTFS symbol, and then the OTFS symbol is mapped to a resource grid of a time-frequency domain, namely the OTFS symbol is mapped to a symbol of a time-frequency domain resource for transmission.

The resource grid size for mapping the time-frequency domain of the first modulation data is ln×m. When l=1, the size of the resource grid of the time-frequency domain is n×m, and at this time, the first modulation data occupies the resource grid of all the time-frequency domains. When L is more than or equal to 2, the first modulation data are mapped to LN multiplied by M resource grids at equal intervals. In the time domain, the N OTFS symbols are equally spaced and mapped onto the lxn symbols, where the symbol in the time-frequency domain occupied by the first modulation data is a first symbol.

The nature of the fourier transform can be used to construct s including zero-valued symbols _NM From the known symbol set X in the delay-Doppler domain _NM ＝[X ₁ ,X ₂ ,…,X _N ]Construction of symbol set X by replication _LNM Thereby constructing a transformed symbol set s with sparse characteristics in the time-frequency domain after transformation _LNM ＝[s ₁ ,0,…,0,s ₂ ,0,…,0,…,0,s _N ,0,…,0,]Including N OTFS symbols carrying information and (L-1) N0 value symbols, and L-1 zero value symbols between every two OTFS symbols, will s _LNM The l×n symbols in the (b) are mapped to the l×n symbols of the time-frequency domain resource, and are transmitted, so that N first symbols occupied by the OTFS symbols are arranged at equal intervals in the l×n symbols of the time-frequency domain resource, as shown in fig. 3, and the other symbols except for the first symbols are used for mapping 0-value symbols. Taking l=2 as an example, construct X _2NM ＝[X ₁ ,X ₂ ,…,X _N ,X ₁ ,X ₂ ,…,X _N ]Transformed symbol set s obtained after transformation _2NM ＝[s ₁ ,0,s ₂ ,0,…,s _N ,0]Including N OTFS symbols and N0 value symbols carrying information, and comparing the s with the first value _2NM The transmission is performed in 2×m resource cells mapped to the time-frequency domain.

In one embodiment, the N is the number of symbols contained in each slot, and the lxn symbols correspond to L slots.

Step 220, the network side device performs transmission of the first modulation data with the first terminal according to the position information of the N first symbols in the l×n symbols of the time-frequency domain resource.

The network side equipment and the first terminal can send or receive first modulation data through the N first symbols through the position information of the N first symbols.

The OTFS symbols in all N first symbols are converged from the received L×N symbols at the receiving end to form an N×M transformed symbol set s _NM SFFT conversion is then performed to convert the symbol set into a DD field of N x M, and subsequent demodulation and decoding processes are performed.

By mapping the data replication of the DD domain, the single point pilot pulse becomes multi-point, and the channel estimation may be performed in the guard symbol (GAP) of any replication region, or may further consider the merging detection of the replication regions.

As can be seen from the technical method in the embodiment of the present application, first information is sent to a first terminal through a network side device, where the first information is used to indicate position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, and the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource; according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource, the network side equipment transmits the first modulation data with the first terminal; therefore, by widening the signal time, the Doppler resolution is increased, and the channel estimation accuracy of OTFS modulation is improved.

Based on the above embodiment, the first modulation data is mapped to N first symbols in the lxn symbols of the time-frequency domain resource, which essentially widens the signal time by data replication in the DD domain, and greatly increases the overhead of the resource by adding zero value symbols. In a multi-user concurrency scene, if a simple time division mode is adopted for the allocation of the time-frequency domain resources of the first modulation data of the first terminal and the second modulation data of the second terminal, the time delay requirement of the second terminal on the second modulation data cannot be ensured due to the fact that the number of symbols used for transmitting the first modulation data is large.

For this reason, the embodiment of the present application adopts a hybrid framing modulation manner of OTFS waveforms and OFDM waveforms to ensure that OFDM symbols can be transmitted in each slot, where the OFDM symbols can multiplex the transformed symbol set s of the above embodiment _LNM The symbol of 0 value in the time-frequency domain resource.

As shown in fig. 4, the trellis diagram is the position of the second symbol occupied by the second modulation data, and when the QAM symbol of the OTFS system is duplicated and mapped in the DD domain, the transformed symbol set thereof is actually mapped in the TF domain in a non-orthogonal manner with the QAM symbol set of the OFDM system, except that the OFDM symbol set is mapped to the symbol occupied by the 0-value symbol of the transformed symbol set, thereby avoiding inter-symbol interference.

In one embodiment, when sending the first information to the first terminal, the method further includes:

the network side equipment sends second information to a second terminal; the second terminal is a terminal supporting transmission of second modulation data, the second information is used for indicating the second terminal to transmit the second modulation data at a position where a second symbol is located, and the second symbol is a symbol other than the first symbol in the l×n symbols.

And the network side equipment configures time-frequency domain resources for mapping the second modulation data for the second terminal through second information of the second terminal.

In one embodiment, the second information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

the first information and the second information may be two different pieces of information, or may be the same piece of information, and may indicate, by one piece of information, a time-frequency domain resource mapping the first modulation data and a time-frequency domain resource mapping the second modulation data, or may indicate only the time-frequency domain resource mapping the first modulation data, and the second terminal determines the time-frequency domain resource mapping the second modulation data by mapping the time-frequency domain resource of the first modulation data.

When the position information of the first symbol is semi-static configuration, the network side device can indicate the fast matching mode of the OFDM symbol through SIB broadcast signals or RRC signaling, namely the time-frequency domain resources which are reserved except the first symbol occupied by the OTFS symbol.

When the location information of the first symbol is dynamically configured, the network side device may indicate a set of location configuration lists available as the second symbol through SIB broadcast signals or RRC signaling, and then indicate indexes of the location configuration lists by DCI.

When the position information of the first symbol is dynamically configured, the position configuration can also be indicated directly through DCI.

As can be seen from the technical solutions of the embodiments of the present application, the embodiments of the present application indicate the OFDM symbol multiplexing transformation symbol set s to the second terminal _LNM The 0 value symbol occupies the symbol in the time-frequency domain resource, so that the time delay requirement of the second terminal on the second modulation data is ensured and the resource utilization efficiency is improved under the condition of improving the channel estimation accuracy of OTFS modulation.

Based on the above embodiments, the manner of indicating the position information of the N first symbols occupied by the first modulation data in the l×n symbols of the time-frequency domain resource by the first information may be various. In one embodiment, the first information is used to indicate a mapping manner of mapping the first modulation data to time-frequency domain resources, where the mapping manner is used to determine at least one of the following:

the number of the first symbols in each slot;

the spacing between each first symbol.

Further, the interval between each first symbol is the same.

In one embodiment, the time-frequency domain resources corresponding to the first modulation data in each time slot are the same.

Taking the related art NR frame structure as an example, each slot may include 14 symbols, there are three mapping manners for mapping the first symbol of the OTFS symbols.

In one embodiment, as shown in fig. 5, there is only one first symbol in each slot, and the position of the first symbol may be configured at any one of the 1 st to 14 th symbols of each slot.

In another embodiment, as shown in fig. 6, there are 2 first symbols in each slot, and the requirement of equal spacing between each first symbol is satisfied. Thus, the position of the first symbol in each slot may be seven groups: (1,8), (2,9), (3,10), (4,11), (5,12), (6,13), (7,14).

In another embodiment, as shown in fig. 7, there are 7 first symbols in each slot, and the requirement of equal spacing between each first symbol is satisfied. Thus, the position of the first symbol in each slot may be two sets: (1,3,5,7,9,11,13), (2,4,6,8,10,12,14).

In one embodiment, the NR frame structure is not limited, but the time-frequency domain resources corresponding to the first modulation data in each slot are required to be the same. In the case where each slot includes M symbols, then the number of first symbols configurable per slot is all submultiples of the M.

In another embodiment, the first information may respectively indicate the time-frequency domain resources corresponding to the first modulation data through specific indication information. The first information comprises first indication information and/or second indication information; the first indication information is used for indicating time domain resource information corresponding to the first modulation data, and the second indication information is used for indicating frequency domain resource information corresponding to the first modulation data.

In one embodiment, the first indication information is used to indicate at least one of the following time domain resource information:

the position of the time domain resource occupied by the first modulation data;

the size of the time domain resource occupied by the first modulation data;

and the interval between the time domain resources occupied by the first modulation data.

In one embodiment, the location of the time domain resource occupied by the first modulation data includes at least one of:

the position of a first time slot, wherein the first time slot is the time slot in which the first modulation data is located;

the position of the first symbol.

The position of the first slot may be an absolute position, such as an index of a slot; the relative position may be the number of forward or backward offset slots of the slot in which the first indication information is located.

The first symbol is located in a position that is an index of the first symbol within each slot.

In an embodiment, the size of the time domain resource occupied by the first modulation data may be indicated directly or indirectly.

Wherein the direct indication may indicate the number of the first slots and/or the number of the first symbols;

the indirect indication may indicate the number of first symbols by indicating a size of the first modulation data in the doppler dimension.

In an embodiment, the interval between the time domain resources occupied by the first modulation data is an interval between each first symbol, and specifically may be granularity of a symbol.

In one embodiment, the second indication information is used to indicate at least one of the following frequency domain resource information:

the position of the frequency domain resource occupied by the first modulation data;

the size of the frequency domain resource occupied by the first modulation data;

and the interval between the frequency domain resources occupied by the first modulation data.

In one embodiment, the location of the frequency domain resource occupied by the first modulation data includes at least one of:

a location of a first frequency domain resource, the first frequency domain resource being a physical resource block (PhysicalResourceBlock, PRB) or a group of resource blocks (ResourceBlock Group, RBG) occupied by the first modulation data;

And the second frequency domain resource is the position of a subcarrier occupied by the first modulation data in each first frequency domain resource, namely the position of a subcarrier in each PRB or RBG.

The location of the first frequency domain resource may be an absolute location, e.g. a number of PRBs or PRGs; but also a relative position, e.g. offset of PRBs or PRGs with respect to a reference position defined by the protocol. The minimum unit of the offse may be a subcarrier, a PRB, or an RBG.

In one embodiment, the size of the frequency domain resource occupied by the first modulation data may be indicated by a direct or indirect method.

Wherein the direct indication may indicate the number of the first frequency domain resources and/or the number of the second frequency domain resources;

the indirect indication may indicate a size of the frequency domain resource occupied by the first modulation data by indicating a size of a delay dimension corresponding to the first modulation data.

In one embodiment, the interval between the frequency domain resources occupied by the first modulation data is the number of subcarriers of the interval between the second frequency domain resources.

In one embodiment, if the time-frequency domain resources corresponding to the first modulation data in each time slot are not limited to be the same, the time-frequency domain resources in which each first modulation data is located may be only equally spaced, and the positions of the first symbols in each time slot are not required to be the same, or the positions of the subcarriers in each PRB or RBG are required to be the same.

According to the technical scheme of the embodiment of the application, the embodiment of the application indicates the time-frequency domain resource occupied by the first modulation data in various modes, so that the interference between the OTFS symbol and the OFDM symbol is avoided.

In the related art NR system, the control resource set (Control Resource Set, CORESET) resources where the control channel is located are contiguous and occupy 1 to 3 OFDM symbols.

Based on the above embodiment, further, in a case that a symbol for transmitting CORESET is included in a slot in which the first modulation data is located, and the first condition is satisfied, the method further includes:

the network side equipment sends configuration information of CORESET, wherein the configuration information of CORESET is used for indicating that symbols for transmitting CORESET in a time slot where the first modulation data are located are arranged at intervals;

wherein the first condition includes:

the interval between each first symbol is less than the number of symbols used to transmit CORESET.

For example, in the case that there are 7 first symbols in each slot and the requirement of equal spacing between each first symbol is satisfied, only one second symbol for mapping OFDM symbols is spaced between each first symbol, and if more than 1 OFDM symbols configured by CORESET, discontinuous mapping of CORESET may result. At this time, the network side device is required to send configuration information of CORESET, and the indication is that the symbols for CORESET transmission are arranged at intervals.

To achieve this configuration, in one embodiment, a time domain mapping field for CORESET may be used in the protocol: two values are added to the duration field inside the controlresucouceset. The following is shown:

the value of maxCoReSetDuration is increased from 3 to 5, where 4 represents 2 symbols of CORESET in a spaced arrangement and 5 represents 3 symbols of CORESET in a spaced arrangement.

In another embodiment, a one bit field may be added to the protocol to indicate the spacing arrangement, for example:

combMapping BOOLEAN,

namely, when the duration is configured, when the combMapping value is 0, CORESET resources are continuously distributed; when the combMapping value is 1, the CORESET resources are arranged at intervals.

As can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, by including symbols for transmitting CORESET in a time slot in which the first modulated data is located, and when the interval between each first symbol is smaller than the number of symbols for transmitting CORESET, it is indicated that the symbols for transmitting CORESET in the time slot in which the first modulated data is located adopt interval arrangement, so that accurate transmission of CORESET is ensured.

In the related art NR system, the start position of the DMRS may be on the 1 st, 2 nd, 3 rd symbols; the time domain density can be 1 symbol, 2 symbols, 3 symbols, 4 symbols, and mapped according to fixed several modes. At this time, a collision may occur with the position of the first symbol.

Based on the above embodiment, further, in the case that the symbol for transmitting the demodulation reference signal (Demodulation Reference Signal, DMRS) is included in the slot in which the first modulation data is located, the method further includes:

the network side equipment sends configuration information of the DMRS, wherein the configuration information of the DMRS is used for indicating an offset corresponding to a symbol used for transmitting the DMRS, and the symbol used for transmitting the DMRS avoids a first symbol through the offset; wherein the offset is related to the position of the first symbol.

To achieve this configuration, in one embodiment, the time domain mapping field for DMRS in the protocol is in the IE PDSCH-TimeDomainResourceAllocation, IE DMRS-DownlinkConfig. A dmrsOffset field may be added to the IE PDSCH-timedomainresource allocation to indicate whether the DMRS symbols need to be offset, with 0 and 1 representing 1 symbol to the left and right, respectively:

dmrsOffset BOOLEAN,

meanwhile, a DMRS symbol sequence number indicating that an offset is required is also required. Since the NR DMRS occupies at most 4 symbols in one slot in the related art, it may be indicated in a bit map form;

offsetDmrs BIT STRING(SIZE(4)),

as can be seen from the technical solutions of the foregoing embodiments, in the embodiments of the present application, when a symbol for transmitting a DMRS is included in a slot in which first modulation data is located, an offset corresponding to the symbol for transmitting the DMRS is indicated, and the symbol for transmitting the DMRS is avoided from the first symbol by using the offset, so that accuracy of DMRS transmission is ensured.

According to the information transmission method provided by the embodiment of the application, the execution main body can be an information transmission device. In the embodiment of the present application, an information transmission device is described by taking an example in which the information transmission device performs an information transmission method.

As shown in fig. 8, the information transmission apparatus includes: a configuration module 801 and a transmission module 802.

Wherein, the configuration module 801 is configured to send first information to a first terminal; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2; the transmission module 802 is configured to perform transmission of the first modulated data with the first terminal according to location information of the N first symbols in the l×n symbols of the time-frequency domain resource.

Further, the first signal domain is at least one of:

Delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

Further, the first information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

as can be seen from the technical method in the embodiment of the present application, first information is sent to a first terminal, where the first information is used to indicate position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, and the N first symbols are arranged at equal intervals in l×n symbols of the time-frequency domain resource; according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource, the network side equipment transmits the first modulation data with the first terminal; therefore, by widening the signal time, the Doppler resolution is increased, and the channel estimation accuracy of OTFS modulation is improved.

Based on the above embodiment, further, when sending the first information to the first terminal, the configuration module is further configured to send the second information to the second terminal; the second terminal is a terminal supporting transmission of second modulation data, the second information is used for indicating the second terminal to transmit the second modulation data at a position where a second symbol is located, and the second symbol is a symbol other than the first symbol in the l×n symbols.

Further, the second modulation is an OFDM modulation.

Further, the second information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

Based on the foregoing embodiment, further, the first information is configured to indicate a mapping manner of mapping the first modulation data to a time-frequency domain resource, where the mapping manner is used to determine at least one of the following:

the number of the first symbols in each slot;

the spacing between each first symbol.

Further, the interval between each first symbol is the same.

Further, the first information comprises first indication information and/or second indication information; the first indication information is used for indicating time domain resource information corresponding to the first modulation data, and the second indication information is used for indicating frequency domain resource information corresponding to the first modulation data.

Further, the first indication information is used for indicating at least one of the following time domain resource information:

the position of the time domain resource occupied by the first modulation data;

the size of the time domain resource occupied by the first modulation data;

Further, the location of the time domain resource occupied by the first modulation data includes at least one of:

the position of the first symbol.

Further, the size of the time domain resource occupied by the first modulation data includes at least one of the following:

the number of first time slots;

the number of the first symbols;

the first modulation data is of a size in the doppler dimension.

Further, the interval between the time domain resources occupied by the first modulation data is the interval between each first symbol.

Further, the second indication information is used for indicating at least one of the following frequency domain resource information:

Further, the location of the frequency domain resource occupied by the first modulation data includes at least one of:

the position of a first frequency domain resource, wherein the first frequency domain resource is a PRB or RBG occupied by the first modulation data;

and the second frequency domain resource is the subcarrier occupied by the first modulation data in each first frequency domain resource.

Further, the size of the frequency domain resource occupied by the first modulation data includes at least one of the following:

the number of first frequency domain resources;

the number of second frequency domain resources;

and the size of the delay dimension corresponding to the first modulation data.

Further, the interval between the frequency domain resources occupied by the first modulation data is the number of subcarriers of the interval between the second frequency domain resources.

Further, the method is characterized in that the time-frequency domain resources corresponding to the first modulation data in each time slot are the same.

Based on the above embodiment, further, in the case that the time slot in which the first modulation data is located includes a symbol for transmitting CORESET, and the first condition is satisfied, the configuration module is further configured to send configuration information of CORESET, where the configuration information of CORESET is used to indicate that the symbol for transmitting CORESET in the time slot in which the first modulation data is located adopts a spacing arrangement;

Wherein the first condition includes:

Based on the above embodiment, further, in a case that the time slot in which the first modulation data is located includes a symbol for transmitting a DMRS, the configuration module is further configured to send configuration information of the DMRS, where the configuration information of the DMRS is used to indicate an offset corresponding to the symbol for transmitting the DMRS; wherein the offset is related to the position of the first symbol.

The information transmission device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic 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 information transmission device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 to 7, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

As shown in fig. 9, the embodiment of the present application further provides an information transmission method, where the execution body of the method is the first terminal, in other words, the method may be executed by software or hardware installed in the first terminal. The method comprises the following steps.

Step 910, the first terminal receives first information from a network side device; the first terminal is a terminal supporting transmission of first modulation data, the first information is used for indicating position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in l×n symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2.

Further, the first information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

further, the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

And step 920, the first terminal performs transmission of the first modulation data with the network side device according to the position information of the N first symbols in the l×n symbols of the time-frequency domain resource.

As can be seen from the technical method in the embodiment of the present application, first information is received from a network side device, where the first information is used to indicate position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, and the N first symbols are arranged at equal intervals in l×n symbols of the time-frequency domain resource; according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource, the network side equipment transmits the first modulation data with the first terminal; therefore, by widening the signal time, the Doppler resolution is increased, and the channel estimation accuracy of OTFS modulation is improved.

The number of the first symbols in each slot;

the spacing between each first symbol.

Further, the interval between each first symbol is the same.

the position of the time domain resource occupied by the first modulation data;

the size of the time domain resource occupied by the first modulation data;

the position of the first symbol.

the number of first time slots;

The number of the first symbols;

the first modulation data is of a size in the doppler dimension.

the number of first frequency domain resources;

the number of second frequency domain resources;

and the size of the delay dimension corresponding to the first modulation data.

Further, the time-frequency domain resources corresponding to the first modulation data in each time slot are the same.

receiving configuration information of CORESET from the network side equipment, wherein the configuration information of CORESET is used for indicating that symbols for transmitting CORESET in a time slot where the first modulation data are located adopt interval arrangement;

wherein the first condition includes:

Based on the above embodiment, further, in a case that the symbol for transmitting the DMRS is included in the slot in which the first modulation data is located, the method further includes:

receiving configuration information of a DMRS from the network side equipment, wherein the configuration information of the DMRS is used for indicating an offset corresponding to a symbol used for transmitting the DMRS; wherein the offset is related to the position of the first symbol.

As shown in fig. 10, the information transmission apparatus includes: a configuration module 1001 and a transmission module 1002.

The configuration module 1001 is configured to receive first information from a network side device; the device supports transmission of first modulation data, wherein the first information is used for indicating position information of N first symbols occupied by the first modulation data in L multiplied by N symbols of a time-frequency domain resource, the N first symbols are arranged at intervals in the L multiplied by N symbols of the time-frequency domain resource, the first modulation data is data for transforming data mapped in a first signal domain into a time-frequency domain, N is the number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2; the transmission module 1002 is configured to perform transmission of the first modulated data with the network side device according to location information of the N first symbols in the l×n symbols of the time-frequency domain resource.

Further, the first information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

further, the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

As can be seen from the technical method in the embodiment of the present application, first information is received from a network side device, where the first information is used to indicate position information of N first symbols occupied by the first modulation data in l×n symbols of a time-frequency domain resource, and the N first symbols are arranged at equal intervals in l×n symbols of the time-frequency domain resource; transmitting the first modulation data according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource; therefore, by widening the signal time, the Doppler resolution is increased, and the channel estimation accuracy of OTFS modulation is improved.

the number of the first symbols in each slot;

The spacing between each first symbol.

Further, the interval between each first symbol is the same.

the position of the time domain resource occupied by the first modulation data;

the size of the time domain resource occupied by the first modulation data;

the position of the first symbol.

the number of first time slots;

the number of the first symbols;

the first modulation data is of a size in the doppler dimension.

the number of first frequency domain resources;

the number of second frequency domain resources;

and the size of the delay dimension corresponding to the first modulation data.

Based on the above embodiment, further, in the case that the time slot in which the first modulation data is located includes a symbol for transmitting CORESET, and the first condition is satisfied, the configuration module is further configured to receive, from the network side device, configuration information of CORESET, where the configuration information of CORESET is used to indicate that the symbol for transmitting CORESET in the time slot in which the first modulation data is located adopts a spacing arrangement;

wherein the first condition includes:

Based on the above embodiment, further, in a case that the time slot in which the first modulation data is located includes a symbol for transmitting a DMRS, the configuration module is further configured to receive, from the network side device, configuration information of the DMRS, where the configuration information of the DMRS is used to indicate an offset corresponding to the symbol for transmitting the DMRS; wherein the offset is related to the position of the first symbol.

The information transmission device provided in this embodiment of the present application can implement each process implemented by the method embodiment of fig. 9, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

As shown in fig. 11, the embodiment of the present application further provides an information transmission method, where the execution subject of the method is the second terminal, in other words, the method may be executed by software or hardware installed in the second terminal. The method comprises the following steps.

Step 1110, the second terminal receives second information from the network side device; the second terminal is a terminal supporting transmission of second modulation data, the second information is used for indicating the second terminal to transmit the second modulation data at a position where a second symbol is located, the second symbol is a symbol except for N first symbols in the l×n symbols, the N first symbols are N symbols occupied by the first modulation data in the l×n symbols of the time-frequency domain resource, the N first symbols are arranged at intervals in the l×n symbols of the time-frequency domain resource, the first modulation data is data for converting data mapped in a first signal domain into data located in a time-frequency domain, N is a number of symbols contained in each time slot, and L is a positive integer greater than or equal to 2;

Step 1120, the second terminal performs transmission of the second modulation data according to the location of the second symbol and the network side device.

Further, the second modulation is an OFDM modulation.

Further, the second information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

further, the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

As can be seen from the technical solutions of the embodiments of the present application, the embodiments of the present application transform the symbol set s by indicating OFDM symbol multiplexing _LNM The 0 value symbol occupies the symbol in the time-frequency domain resource, so that the time delay requirement of the second modulation data is ensured and the resource utilization efficiency is improved under the condition of improving the channel estimation accuracy of OTFS modulation.

As shown in fig. 12, the information transmission apparatus includes: a configuration module 1201 and a transmission module 1202.

The configuration module 1201 is configured to receive second information from a network side device; the device is a terminal supporting transmission of second modulated data, the second information is used for indicating a position where a second symbol is located to perform transmission of the second modulated data, the second symbol is a symbol except for N first symbols in the l×n symbols, the N first symbols are N symbols occupied by the first modulated data in the l×n symbols of the time-frequency domain resource, the N first symbols are arranged at intervals in the l×n symbols of the time-frequency domain resource, the first modulated data is data obtained by transforming data mapped in a first signal domain into data located in a time-frequency domain, N is a number of symbols included in each time slot, and L is a positive integer greater than or equal to 2; the transmission module 1202 is configured to perform transmission of the second modulated data according to the location of the second symbol and the network side device.

Further, the second modulation is an OFDM modulation.

Further, the second information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

further, the first signal domain is at least one of:

Delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

The information transmission device provided in this embodiment of the present application can implement each process implemented by the method embodiment of fig. 11, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 13, the embodiment of the present application further provides a communication device 1300, including a processor 1301 and a memory 1302, where the memory 1302 stores a program or instructions that can be executed on the processor 1301, for example, when the communication device 1300 is a terminal, the program or instructions implement the steps of the above-mentioned information transmission method embodiment when executed by the processor 1301, and achieve the same technical effects. When the communication device 1300 is a network side device, the program or the instruction, when executed by the processor 1301, implements the steps of the above-described information transmission method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the processor is used for determining the position information of N first symbols occupied by the first modulation data in L multiplied by N symbols of time-frequency domain resources, and the communication interface is used for sending the first information to the first terminal; and transmitting the first modulation data with the first terminal according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 14, the network side device 1400 includes: an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144, and a memory 145. The antenna 141 is connected to the radio frequency device 142. In the uplink direction, the radio frequency device 142 receives information via the antenna 141, and transmits the received information to the baseband device 143 for processing. In the downlink direction, the baseband device 143 processes information to be transmitted, and transmits the processed information to the radio frequency device 142, and the radio frequency device 142 processes the received information and transmits the processed information through the antenna 141.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 143, where the baseband apparatus 143 includes a baseband processor.

The baseband device 143 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 14, where one chip, for example, a baseband processor, is connected to the memory 145 through a bus interface, so as to call a program in the memory 145 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 146, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1400 of the embodiment of the present invention further includes: instructions or programs stored in the memory 145 and executable on the processor 144, the processor 144 invokes the instructions or programs in the memory 145 to perform the methods performed by the modules shown in fig. 8 and achieve the same technical effects, and are not described herein in detail for the sake of avoiding repetition.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for determining the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource according to the first information, and the communication interface is used for receiving the first information from the network side equipment; and transmitting the first modulation data with the network side equipment according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 15 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1500 includes, but is not limited to: at least some of the components of the radio frequency unit 1501, the network module 1502, the audio output unit 1503, the input unit 1504, the sensor 1505, the display unit 1506, the user input unit 1507, the interface unit 1508, the memory 1509, and the processor 1510, among others.

Those skilled in the art will appreciate that the terminal 1500 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically connected to the processor 1510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 15 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, 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 1504 may include a graphics processing unit (Graphics Processing Unit, GPU) 15041 and a microphone 15042, with the graphics processor 15041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1507 includes at least one of a touch panel 15071 and other input devices 15072. The touch panel 15071 is also referred to as a touch screen. The touch panel 15071 may include two parts, a touch detection device and a touch controller. Other input devices 15072 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 the network side device, the radio frequency unit 1501 may transmit the downlink data to the processor 1510 for processing; in addition, the radio frequency unit 1501 may send uplink data to the network side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low noise amplifiers, diplexers, and the like.

The memory 1509 may be used to store software programs or instructions and various data. The memory 1509 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory 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 1509 may include volatile memory or nonvolatile memory, or the memory 1509 may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (ProgrammableROM, PROM), an erasable programmable Read-only memory (ErasablePROM, EPROM), an electrically erasable programmable Read-only memory (ElectricallyEPROM, EEPROM), or a flash memory, among others. 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 1509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1510 may include one or more processing units; optionally, the processor 1510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, 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 1510.

Wherein, the radio frequency unit 1501 is configured to receive first information from a network side device; wherein the terminal supports transmission of first modulated data.

The processor 1510 is configured to determine, according to the first information, location information of N first symbols occupied by the first modulated data in l×n symbols of the time-frequency domain resource, where the N first symbols are arranged at equal intervals in l×n symbols of the time-frequency domain resource, the first modulated data is data that is obtained by transforming data mapped in a first signal domain into data located in a time-frequency domain, N is a number of symbols included in each time slot, and L is a positive integer greater than or equal to 2.

The radio frequency unit 1501 is further configured to perform transmission of the first modulation data with the network side device according to location information of the N first symbols in the lxn symbols of the time-frequency domain resource.

Further, the first information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

further, the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

According to the method and the device, the Doppler resolution is increased by widening the signal time, and the channel estimation accuracy of OTFS modulation is improved.

Further, the first information is used for indicating a mapping manner of mapping the first modulation data to time-frequency domain resources, and the mapping manner is used for determining at least one of the following:

the number of the first symbols in each slot;

the spacing between each first symbol.

Further, the interval between each first symbol is the same.

The position of the time domain resource occupied by the first modulation data;

the size of the time domain resource occupied by the first modulation data;

the position of the first symbol.

the number of first time slots;

the number of the first symbols;

the first modulation data is of a size in the doppler dimension.

the number of first frequency domain resources;

the number of second frequency domain resources;

and the size of the delay dimension corresponding to the first modulation data.

According to the method and the device, the time-frequency domain resources occupied by the first modulation data are indicated in various modes, and interference between the OTFS symbol and the OFDM symbol is avoided.

Further, the radio frequency unit 1501 is further configured to receive second information from a network side device; wherein the terminal is a terminal supporting transmission of second modulation data.

The processor 1510 is configured to determine, according to the second information, that the terminal performs transmission of the second modulated data at a position where a second symbol is located, where the second symbol is a symbol other than N first symbols in the l×n symbols, the N first symbols are N symbols occupied by the first modulated data in the l×n symbols of the time-frequency domain resource, the N first symbols are arranged at intervals in the l×n symbols of the time-frequency domain resource, the first modulated data is data that transforms data mapped in a first signal domain to data located in a time-frequency domain, N is a number of symbols included in each time slot, and L is a positive integer greater than or equal to 2.

The radio frequency unit 1501 is further configured to perform transmission of the second modulation data with the network side device according to a location where the second symbol is located.

Further, the second modulation is an OFDM modulation.

Further, the second information is in at least one of the following forms:

SIB broadcast signals;

RRC signaling;

DCI。

further, the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

The embodiment of the application transforms the symbol set s by indicating OFDM symbol multiplexing _LNM The 0 value symbol occupies the symbol in the time-frequency domain resource, so that the time delay requirement of the second modulation data is ensured and the resource utilization efficiency is improved under the condition of improving the channel estimation accuracy of OTFS modulation.

Further, in the case that the time slot in which the first modulation data is located includes a symbol for transmitting CORESET, and the first condition is satisfied, the radio frequency unit 1501 is further configured to receive, from the network side device, configuration information of CORESET, where the configuration information of CORESET is used to indicate that the symbol for transmitting CORESET in the time slot in which the first modulation data is located adopts a spacing arrangement;

Wherein the first condition includes:

According to the method and the device for transmitting the CORESET, when the time slot in which the first modulation data are located comprises symbols used for transmitting the CORESET, and the interval between each first symbol is smaller than the number of the symbols used for transmitting the CORESET, the symbols used for transmitting the CORESET in the time slot in which the first modulation data are located are indicated to be arranged at intervals, and therefore accurate transmission of the CORESET is guaranteed.

Further, in the case that the time slot in which the first modulation data is located includes a symbol for transmitting a DMRS, the radio frequency unit 1501 is further configured to receive, from the network side device, configuration information of the DMRS, where the configuration information of the DMRS is used to indicate an offset corresponding to the symbol for transmitting the DMRS; wherein the offset is related to the position of the first symbol.

According to the method and the device for transmitting the DMRS, under the condition that the time slot where the first modulation data is located comprises the symbol used for transmitting the DMRS, the offset corresponding to the symbol used for transmitting the DMRS is indicated, and the symbol used for transmitting the DMRS is enabled to avoid the first symbol through the offset, so that accuracy of the transmission of the DMRS is guaranteed.

The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction realizes each process of the above embodiment of the information transmission method when executed by a processor, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

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 used for running a program or an instruction, so that each process of the above information transmission method embodiment can be implemented, and the same technical effect can be achieved, so that repetition is avoided, and no redundant description is provided here.

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 method embodiments, and achieve the same technical effects, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides an information transmission system, which comprises: the terminal can be used for executing the steps of the information transmission method, and the network side device can be used for executing the steps of the information transmission 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. An information transmission method, comprising:

and the network side equipment transmits the first modulation data with the first terminal according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

2. The method of claim 1, wherein the first information is used to indicate a mapping manner of the first modulation data to time-frequency domain resources, and wherein the mapping manner is used to determine at least one of:

the number of the first symbols in each slot;

the spacing between each first symbol.

3. The method of claim 2, wherein the spacing between each of the first symbols is the same.

4. The method according to claim 1, wherein the first information comprises first indication information and/or second indication information; the first indication information is used for indicating time domain resource information corresponding to the first modulation data, and the second indication information is used for indicating frequency domain resource information corresponding to the first modulation data.

5. The method of claim 4, wherein the first indication information is used to indicate at least one of the following time domain resource information:

the position of the time domain resource occupied by the first modulation data;

the size of the time domain resource occupied by the first modulation data;

6. The method of claim 5, wherein the location of the time domain resource occupied by the first modulation data comprises at least one of:

the position of the first symbol.

7. The method of claim 6, wherein the size of the time domain resource occupied by the first modulation data comprises at least one of:

The number of first time slots;

the number of the first symbols;

the first modulation data is of a size in the doppler dimension.

8. The method of claim 6 wherein the time domain resources occupied by the first modulated data are spaced apart by each first symbol.

9. The method of claim 4, wherein the second indication information is used to indicate at least one of frequency domain resource information:

10. The method of claim 9, wherein the location of the frequency domain resource occupied by the first modulation data comprises at least one of:

11. The method of claim 10, wherein the size of the frequency domain resource occupied by the first modulation data comprises at least one of:

The number of first frequency domain resources;

the number of second frequency domain resources;

and the size of the delay dimension corresponding to the first modulation data.

12. The method of claim 10 wherein the spacing between frequency domain resources occupied by the first modulation data is the number of subcarriers of the spacing between the second frequency domain resources.

13. The method according to any of claims 1-12, wherein the time-frequency domain resources corresponding to the first modulation data in each time slot are the same.

14. The method of claim 1, wherein the symbol for transmitting the set of control resources is included in a time slot in which the first modulation data is located, and wherein the method further comprises, if the first condition is satisfied:

the network side equipment sends configuration information of a control resource set, wherein the configuration information of the control resource set is used for indicating that symbols for transmitting the control resource set in a time slot where the first modulation data are located are arranged at intervals;

wherein the first condition includes:

the interval between each first symbol is smaller than the number of symbols used for transmitting the set of control resources.

15. The method of claim 1, wherein in the case where the symbol for transmitting the demodulation reference signal is included in the slot in which the first modulation data is located, the method further comprises:

The network side equipment sends configuration information of a demodulation reference signal, wherein the configuration information of the demodulation reference signal is used for indicating an offset corresponding to a symbol used for transmitting the demodulation reference signal; wherein the offset is related to the position of the first symbol.

16. The method of claim 1, wherein when sending the first information to the first terminal, the method further comprises:

17. The method of claim 16, wherein the second modulation is an orthogonal frequency division multiplexing modulation.

18. The method according to claim 16, characterized in that the first information and/or the second information is in at least one of the following forms:

a system information block broadcast signal;

radio resource control signaling;

downlink control information.

19. The method of claim 1, wherein the first signal domain is at least one of:

Delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

20. An information transmission apparatus, comprising:

21. An information transmission method, comprising:

22. The method of claim 21, wherein the first information is used to indicate a mapping manner of the first modulation data to time-frequency domain resources, and wherein the mapping manner is used to determine at least one of:

the number of the first symbols in each slot;

the spacing between each first symbol.

23. The method of claim 22, wherein the spacing between each of the first symbols is the same.

24. The method according to claim 21, wherein the first information comprises first indication information and/or second indication information; the first indication information is used for indicating time domain resource information corresponding to the first modulation data, and the second indication information is used for indicating frequency domain resource information corresponding to the first modulation data.

25. The method of claim 24, wherein the first indication information is used to indicate at least one of the following time domain resource information:

the position of the time domain resource occupied by the first modulation data;

The size of the time domain resource occupied by the first modulation data;

26. The method of claim 25, wherein the location of the time domain resource occupied by the first modulation data comprises at least one of:

the position of the first symbol.

27. The method of claim 26, wherein the size of the time domain resource occupied by the first modulation data comprises at least one of:

the number of first time slots;

the number of the first symbols;

the first modulation data is of a size in the doppler dimension.

28. The method of claim 26 wherein the time domain resources occupied by the first modulated data are spaced apart by each first symbol.

29. The method of claim 24, wherein the second indication information is used to indicate at least one of frequency domain resource information:

30. The method of claim 29, wherein the location of the frequency domain resource occupied by the first modulation data comprises at least one of:

31. The method of claim 30, wherein the size of the frequency domain resource occupied by the first modulation data comprises at least one of:

the number of first frequency domain resources;

the number of second frequency domain resources;

and the size of the delay dimension corresponding to the first modulation data.

32. The method of claim 30 wherein the spacing between the frequency domain resources occupied by the first modulation data is the number of subcarriers of the spacing between the second frequency domain resources.

33. The method according to any of claims 21-32, wherein the time-frequency domain resources corresponding to the first modulation data in each time slot are the same.

34. The method of claim 21, wherein the first modulation data comprises symbols for transmitting a set of control resources in a time slot in which the first modulation data is located, and wherein the method further comprises, if a first condition is satisfied:

receiving configuration information of a control resource set from the network side equipment, wherein the configuration information of the control resource set is used for indicating that symbols for transmitting the control resource set in a time slot where the first modulation data are positioned adopt interval arrangement;

wherein the first condition includes:

35. The method of claim 21, wherein in the case where the symbol for transmitting the demodulation reference signal is included in the slot in which the first modulation data is located, the method further comprises:

receiving configuration information of a demodulation reference signal from the network side equipment, wherein the configuration information of the demodulation reference signal is used for indicating an offset corresponding to a symbol used for transmitting the demodulation reference signal; wherein the offset is related to the position of the first symbol.

36. The method of claim 21, wherein the first information is in at least one of the following forms:

A system information block broadcast signal;

radio resource control signaling;

downlink control information.

37. The method of claim 21, wherein the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

38. An information transmission apparatus, comprising:

and the transmission module is used for carrying out the first modulation data with the network side equipment according to the position information of the N first symbols in the L multiplied by N symbols of the time-frequency domain resource.

39. An information transmission method, comprising:

40. The method of claim 39, wherein the second modulation is orthogonal frequency division multiplexing modulation.

41. The method of claim 39, wherein the second information is in at least one of the following forms:

A system information block broadcast signal;

radio resource control signaling;

downlink control information.

42. The method of claim 39, wherein the first signal domain is at least one of:

delay doppler domain;

delay time domain;

a delay sequence domain;

delay angle domain.

43. An information transmission apparatus, comprising:

the configuration module is used for receiving second information from the network side equipment; the device is a terminal supporting transmission of second modulated data, the second information is used for indicating that the second modulated data is transmitted at a position where a second symbol is located, the second symbol is a symbol except for N first symbols in the l×n symbols, the N first symbols are N symbols occupied by the first modulated data in the l×n symbols of the time-frequency domain resource, the N first symbols are arranged at intervals in the l×n symbols of the time-frequency domain resource, the first modulated data is data for transforming data mapped in a first signal domain into data located in a time-frequency domain, N is a number of symbols included in each time slot, and L is a positive integer greater than or equal to 2;

44. A network side 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 information transmission method of any one of claims 1 to 19.

45. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the information transmission method of any one of claims 21 to 37, or performs the steps of the information transmission method of any one of claims 39 to 42.

46. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions, which when executed by a processor, implements the method of steps of the information transmission method according to any of claims 1 to 19, or implements the steps of the information transmission method according to any of claims 21 to 37, or implements the steps of the information transmission method according to any of claims 39 to 42.