WO2023116874A1

WO2023116874A1 - Communication resource determination method, and terminal and network-side device

Info

Publication number: WO2023116874A1
Application number: PCT/CN2022/141347
Authority: WO
Inventors: 刘殷卉; 李�根
Original assignee: 维沃移动通信有限公司
Priority date: 2021-12-23
Filing date: 2022-12-23
Publication date: 2023-06-29
Also published as: CN116367327A

Abstract

The present application belongs to the technical field of mobile communications. Disclosed are a communication resource determination method, and a terminal and a network-side device. The communication resource determination method in the embodiments of the present application comprises: according to a first time-domain position and/or a first frequency-domain position corresponding to a first physical downlink control channel, a network-side device determining a second time-domain position and/or a second frequency-domain position of a first demodulation reference signal which is associated with the first physical downlink control channel; and according to the second time-domain position and/or the second frequency-domain position, the network-side device sending to a terminal the first demodulation reference signal which is associated with the first physical downlink control channel, wherein the first physical downlink control channel is sent on the basis of a discrete Fourier transform-size orthogonal frequency division multiplex waveform.

Description

Communication resource determination method, terminal and network side equipment

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202111592898.2 filed on December 23, 2021, the entire content of which is hereby incorporated by reference.

technical field

The present application belongs to the technical field of mobile communication, and specifically relates to a method for determining communication resources, a terminal and a network side device.

Background technique

In wireless communication, for a certain semiconductor technology, the maximum output power of a radio frequency power amplifier (Power Amplifier, PA) decreases as the frequency of the wireless signal increases. That is to say, compared with medium and low frequency mobile communication, in high frequency communication system, for example frequency fc>52.6GHz, the maximum output power of PA is lower. Therefore, it is necessary to use a signal waveform with a lower "peak-to-average ratio" in order to improve the power amplifier efficiency of the PA, thereby ensuring the power of the output signal.

In the 5G NR system, the UL uses a discrete Fourier transform-spread-orthogonal frequency division multiplexing (Discrete Fourier Transform-size-Orthogonal frequency division multiplex, DFT-s-OFDM) waveform. DFT-s-OFDM waveform can allocate different sub-carriers for different users to realize multi-user communication. Therefore, in high-frequency communication systems, the use of DFT-s-OFDM waveforms for DL is beneficial to the output signal power of base station equipment.

The DFT-s-OFDM waveform is used to transmit the Physical Downlink Control Channel (PDCCH). Since the time-frequency resource position of the Demodulation Reference Signal (DMRS) associated with the PDCCH is not designed, the terminal cannot The PDCCH effectively performs channel estimation and demodulation, which affects data transmission efficiency.

Contents of the invention

The embodiment of the present application provides a communication resource determination method, a terminal and a network side device, which can solve the problem that the terminal cannot effectively perform channel estimation and demodulation on the PDCCH of the DFT-s-OFDM waveform.

In the first aspect, a method for determining communication resources is provided, which is applied to a network side device, and the method includes:

The network side device determines the second time domain position and the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. /or a second frequency domain location;

The network side device sends a first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel It is transmitted based on discrete Fourier transform-spread-OFDM waveform;

Wherein, the first time domain position is the time domain position of the first physical downlink control channel or the time domain position of the first control resource set where the first physical downlink control channel is located; the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.

In a second aspect, an apparatus for determining communication resources is provided, including:

A determining module, configured to determine the second time domain of the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel location and/or second frequency domain location;

A sending module, configured to send a first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel It is transmitted based on discrete Fourier transform-spread-OFDM waveform;

In a third aspect, a method for determining communication resources is provided, which is applied to a terminal, and the method includes:

The terminal determines the second time domain position and/or the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel second frequency domain position;

The terminal receives the first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel is based on Discrete Fourier transform-spread-OFDM waveform reception;

In a fourth aspect, an apparatus for determining communication resources is provided, including:

A receiving module, configured to receive a first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel Received based on discrete Fourier transform-spread-OFDM waveform;

In a fifth aspect, a network-side device is provided, the network-side device includes a processor and a memory, the memory stores programs or instructions that can run on the processor, and the programs or instructions are executed by the processor When realizing the steps of the method as described in the first aspect.

According to a sixth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is configured to determine according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel The second time-domain position and/or the second frequency-domain position of the first demodulation reference signal associated with the first physical downlink control channel, the communication interface is used for according to the second time-domain position and/or the second In the frequency domain position, the first demodulation reference signal associated with the first physical downlink control channel is sent; wherein, the first physical downlink control channel is sent based on discrete Fourier transform-spread-OFDM waveform of.

In a seventh aspect, there is provided a terminal, the terminal includes a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the following steps are implemented: The steps of the method described in the three aspects.

In an eighth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to determine the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel The second time-domain position and/or the second frequency-domain position of the first demodulation reference signal associated with the first physical downlink control channel, the communication interface is used for according to the second time-domain position and/or the second frequency-domain position A location for receiving a first demodulation reference signal associated with the first physical downlink control channel; wherein the first physical downlink control channel is received based on a discrete Fourier transform-spread-OFDM waveform.

A ninth aspect provides a system for determining communication resources, including: a terminal and a network-side device, the terminal can be used to perform the steps of the method for determining communication resources as described in the third aspect, and the network-side device can be used to perform steps such as The steps of the communication resource determination method described in the first aspect.

In a tenth aspect, a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method as described in the first aspect are implemented, or the The steps of the method described in the third aspect.

In an eleventh aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the method described in the first aspect. method, or implement the method as described in the third aspect.

In a twelfth aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the A method for determining communication resources, or implementing the steps of the method described in the third aspect.

In this embodiment of the present application, according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel, the second position of the first demodulation reference signal associated with the first physical downlink control channel is determined. A time domain position and/or a second frequency domain position; according to the second time domain position and/or the second frequency domain position, send to the terminal a first demodulation reference signal associated with the first physical downlink control channel, so that the terminal The first demodulation reference signal can be accurately obtained based on the second time domain position and the second frequency domain position, and channel estimation and demodulation can be smoothly performed on the first physical downlink control channel, so as to improve data transmission efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of a wireless communication system applicable to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a method for determining communication resources provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a time-frequency position of a communication resource provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of time-frequency positions of another communication resource provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 11 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 13 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 14 is a schematic diagram of a time-frequency position of another communication resource provided by an embodiment of the present application;

FIG. 15 is a schematic diagram of time-frequency positions of another communication resource provided by an embodiment of the present application;

FIG. 16 is a schematic diagram of time-frequency positions of another communication resource provided by an embodiment of the present application;

FIG. 17 is a schematic structural diagram of an apparatus for determining communication resources provided by an embodiment of the present application;

FIG. 18 is a schematic flowchart of another method for determining communication resources provided by an embodiment of the present application;

FIG. 19 is a schematic structural diagram of another device for determining communication resources provided by an embodiment of the present application;

FIG. 20 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 21 is a schematic structural diagram of a network-side device implementing an embodiment of the present application;

FIG. 22 is a schematic structural diagram of a terminal implementing an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. 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 described herein and that "first" and "second" distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

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

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

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

As shown in Figure 2, the example of this application provides a method for determining communication resources. The execution body of the method is a network-side device. In other words, the method can be executed by software or hardware installed on the network-side device. The network-side The device may be an access network device such as a base station. The method for determining communication resources may include the following steps.

Step 210, the network side device determines the second position of the first demodulation reference signal (Demodulation Reference Signal, DMRS) associated with the first PDCCH according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH. a time domain location and/or a second frequency domain location;

Wherein, the first time domain position is the time domain position of the first PDCCH or the time domain position of the first Control Resource Set (CORESET) where the first PDCCH is located; the first frequency domain The location is the frequency domain location of the first PDCCH or the frequency domain location of the first CORESET where the first PDCCH is located.

It should be understood that the first PDCCH in the method for determining communication resources in the embodiment of the present application is sent and received based on the DFT-s-OFDM waveform, and the first DMRS associated with the first PDCCH can be sent using the CP-OFDM waveform and receive.

It should be understood that the first DMRS is used to perform coherent demodulation on the first PDCCH.

The network side device determines the second time domain position of the first DMRS associated with the first PDCCH according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH, including where the first DMRS is located. The time domain position of the first symbol etc. of .

The PDCCH and the associated DMRS are Time Division Multiplexing (Time Division Multiplexing, TDM).

The network side device determines the second frequency domain position of the first DMRS associated with the first PDCCH according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH, including where the first DMRS is located. The frequency domain positions of the first physical resource block (Physical Resource Block, PRB), the first subcarrier where the first DMRS is located, and the like.

Step 220, the network side device sends the first DMRS associated with the first PDCCH according to the second time domain position and/or the second frequency domain position; wherein, the first PDCCH is based on DFT-s- OFDM waveforms are transmitted.

The terminal receives the first DMRS associated with the first PDCCH based on the second time domain position and/or the second frequency domain position, so as to demodulate the received first PDCCH according to the first DMRS, and obtain the information carried by the PDCCH.

It can be seen from the technical solutions provided by the above embodiments of the present application that in the embodiments of the present application, the network side equipment determines the association of the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH. The second time domain position and/or the second frequency domain position of the first demodulation reference signal; the network side device sends the first physical The first demodulation reference signal associated with the downlink control channel, so that the terminal can accurately acquire the first DMRS based on the second time domain position and the second frequency domain position, and successfully perform channel estimation and summing on the first PDCCH demodulation to improve data transmission efficiency.

Based on the above embodiment, further, the second time domain position of the first DMRS in step 210 includes a position of a first symbol, where the first symbol is a symbol where the first demodulation reference signal is located. The position of the first symbol may be determined in various manners, and the embodiments of this application only provide several specific implementation manners.

It should be understood that the symbols involved in the embodiments of the present application correspond to the symbols of the PDCCH are OFDM symbols of the DFT-s-OFDM waveform, and the symbols where the DMRS is located may be the OFDM symbols of the CP-OFDM waveform.

The start symbol and symbol length of the first symbol of the first DMRS may be predefined by a protocol or configured by a network side.

In an implementation manner, the first symbol is a specified symbol before or after the second symbol, and the second symbol is a symbol where the first PDCCH is located.

The start symbol and symbol length of the second symbol may be predefined by the protocol or configured by the network side.

Further, the position of the specified symbol is predefined by the protocol or configured by the network side.

Further, the specified symbol is N2 symbols starting from the N1 symbol, that is, the first symbol where the first DMRS is located starts from the N1 symbol, and the symbol length occupied by the first DMRS is N2, The N1 and N2 are predefined by the protocol or configured by the network side.

The first symbol is N2 symbols starting from the N1 symbol before the first OFDM symbol included in the second symbol; or, the first symbol is after the last OFDM symbol included in the second symbol The N2 symbols starting with the N1-th symbol of .

For example, as shown in FIG. 3, the second symbol of the first PDCCH includes an OFDM symbol, the first symbol of the first DMRS is an OFDM symbol before the second symbol, and the first symbol is the OFDM symbol before the second symbol. N2=1 OFDM symbols starting from the N1=1th symbol before the second symbol.

As shown in FIG. 4, the second symbol of the first PDCCH includes an OFDM symbol, the first symbol of the first DMRS is an OFDM symbol after the second symbol, and the first symbol is the OFDM symbol after the second symbol. N2=1 OFDM symbols starting from the N1=1th symbol after the second symbol.

The frequency domain position of the first DMRS can be set according to actual needs, and the first DMRS can occupy all or part of the subcarriers. Figure 3 and Figure 4 give examples of three methods, 3a and 4a The first DMRS in 3b occupies all subcarriers, and 3b, 3c, 4b, 4c all occupy part of subcarriers.

In another implementation manner, the first symbol is a designated symbol before or after the third symbol, and the third symbol is a symbol where the first CORESET is located.

The start symbol and symbol length of the third symbol may be predefined by the protocol or configured by the network side.

The first symbol is N2 symbols starting from the N1 symbol before the first OFDM symbol included in the third symbol; or, the first symbol is after the last OFDM symbol included in the third symbol The N2 symbols starting with the N1-th symbol of .

For example, as shown in FIG. 3, the third symbol of the first CORESET includes an OFDM symbol, the first symbol of the first DMRS is an OFDM symbol before the third symbol, and the first symbol is the N2=1 OFDM symbols starting from the N1=1th symbol after the third symbol.

As shown in FIG. 4, the third symbol of the first CORESET includes an OFDM symbol, the first symbol of the first DMRS is an OFDM symbol after the third symbol, and the first symbol is the OFDM symbol after the third symbol. N2=1 OFDM symbols starting from the N1=1th symbol after three symbols.

In another implementation manner, when the second symbols are discontinuous, the first symbol is a designated symbol between the second symbols.

The first symbol is N2 symbols starting from the N1-th symbol among the OFDM symbols included in the second symbol.

For example, as shown in FIG. 5, the second symbol of the first PDCCH includes two discontinuous OFDM symbols, the first symbol of the first DMRS is one OFDM symbol between the second symbols, and the The first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the second symbols.

The frequency domain position of the first DMRS can be set according to actual needs, and the first DMRS can occupy all or part of the subcarriers. Figure 5 gives examples of three methods, and the first DMRS in 5a DMRS occupies all subcarriers, and 5b and 5c both occupy part of subcarriers.

In another implementation manner, when the third symbols are discontinuous, it is a specified symbol between the third symbols.

For example, as shown in FIG. 5, the third symbol of the first CORESET includes two discontinuous OFDM symbols, the first symbol of the first DMRS is one OFDM symbol between the third symbols, and the The first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the third symbols.

In another implementation manner, the first symbol is a specified symbol in the third symbol.

The first symbol is N2 symbols starting from the N1-th symbol among the OFDM symbols included in the third symbol.

For example, as shown in FIG. 6, the third symbol of the first CORESET includes two consecutive OFDM symbols, the first symbol of the first DMRS is one of the OFDM symbols of the third symbol, and the first The symbols are N2=1 OFDM symbols starting from the N1=1th symbol of the third symbol.

As shown in FIG. 7, the third symbol of the first CORESET includes two consecutive OFDM symbols, the first symbol of the first DMRS is one of the OFDM symbols of the third symbol, and the first symbol is N2=1 OFDM symbols starting from the N1=2th symbol of the third symbol.

As shown in FIG. 8, the third symbol of the first CORESET includes three consecutive OFDM symbols, the first symbol of the first DMRS is one of the OFDM symbols of the third symbol, and the first symbol is N2=1 OFDM symbols starting from the N1=2th symbol of the third symbol.

The frequency domain position of the first DMRS can be set according to actual needs, and the first DMRS can occupy all or part of the subcarriers. Figure 6, Figure 7 and Figure 8 all give examples of the three ways, The first DMRS in 6a, 7a and 8a occupies all subcarriers, and in 6b, 6c, 7b, 7c and 8b, 8c all occupy part of subcarriers.

In another embodiment, the first symbol is a specified symbol between the second symbol and the fourth symbol, and the fourth symbol is the symbol where the second PDCCH is located; wherein, the second PDCCH is A PDCCH paired with the first PDCCH.

The start symbol and symbol length of the fourth symbol may be predefined by the protocol or configured by the network side.

The first symbol is N2=1 OFDM symbols starting from the N1=1-th symbol between the OFDM symbols included in the second symbol and the OFDM symbols included in the fourth symbol.

For example, as shown in FIG. 9, the second symbol of the first PDCCH and the fourth symbol of the second PDCCH include one OFDM symbol, and the first symbol of the first DMRS is the second symbol and the fourth symbol of the second PDCCH. One OFDM symbol between symbols, the first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the second symbol and the fourth symbol.

As shown in Figure 10, the second symbol of the first PDCCH and the fourth symbol of the second PDCCH include two OFDM symbols, and the first symbol of the first DMRS is the second symbol and the fourth symbol One OFDM symbol in between, the first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the second symbol and the fourth symbol.

As shown in FIG. 11, the second symbol of the first PDCCH and the fourth symbol of the second PDCCH respectively include one OFDM symbol and two OFDM symbols, wherein, the second symbol in 11a and 11c includes one OFDM symbol, and the fourth A symbol includes two OFDM symbols, the second symbol in 11b and 11d includes two OFDM symbols, and the fourth symbol includes one OFDM symbol. The first symbol of the first DMRS is an OFDM symbol between the second symbol and the fourth symbol, and the first symbol is the N1th symbol between the second symbol and the fourth symbol = 1 symbol starting N2 = 1 OFDM symbol.

The frequency domain position of the first DMRS can be set according to actual needs, and the first DMRS can occupy all or part of the subcarriers. Figures 9-11 only show the first DMRS associated with the second PDCCH. In the two modes where two DMRSs occupy the same symbol, the first DMRS and the second DMRS respectively occupy different subcarriers.

It should be understood that the first DMRS and the second DMRS may also occupy different symbols or partially occupy the same symbols.

In another embodiment, the first symbol is a specified symbol between the third symbol and the fifth symbol, and the fifth symbol is the symbol where the second CORESET is located; wherein, the second CORESET is A set of control resources paired with the first CORESET.

The first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the OFDM symbols included in the third symbol and the OFDM symbols included in the fifth symbol.

The start symbol and symbol length of the fifth symbol may be predefined by the protocol or configured by the network side.

For example, as shown in FIG. 9, both the third symbol of the first CORESET and the fifth symbol of the second CORESET include an OFDM symbol, and the first symbol of the first DMRS is the combination of the third symbol and the fifth symbol of the second CORESET. One OFDM symbol between five symbols, the first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the third symbol and the fifth symbol.

As shown in Figure 10, the third symbol of the first CORESET and the fifth symbol of the second CORESET both include two OFDM symbols, and the first symbol of the first DMRS is the third symbol and the fifth symbol One OFDM symbol between symbols, the first symbol is N2=1 OFDM symbols starting from the N1=1th symbol between the third symbol and the fifth symbol.

As shown in Figure 11, the third symbol of the first CORESET and the fifth symbol of the second CORESET include one OFDM symbol and two OFDM symbols respectively, wherein, the third symbol in 11a and 11c includes one OFDM symbol, and the fifth symbol of A symbol includes two OFDM symbols, the third symbol in 11b and 11d includes two OFDM symbols, and the fifth symbol includes one OFDM symbol. The first symbol of the first DMRS is an OFDM symbol between the third symbol and the fifth symbol, and the first symbol is the N1th symbol between the third symbol and the fifth symbol = 1 symbol starting N2 = 1 OFDM symbol.

The frequency domain position of the first DMRS may be set according to actual needs, and the first DMRS may occupy all or part of subcarriers. Figures 9-11 only show two ways in which the first DMRS and the third DMRS associated with the second CORESET occupy the same symbol, and the first DMRS and the third DMRS respectively occupy different symbols. subcarrier.

It should be understood that the first DMRS and the third DMRS may also occupy different symbols or partially occupy the same symbols.

In another implementation manner, the first symbol is a specified symbol in the fifth symbol.

The first symbol is N2=1 OFDM symbols starting from the N1=1-th symbol among the OFDM symbols included in the fifth symbol.

As shown in FIG. 12, the third symbol of the first CORESET includes one OFDM symbol, the fifth symbol of the second CORESET includes two OFDM symbols, and the first symbol of the first DMRS is the OFDM symbol of the first CORESET. One OFDM symbol in the five symbols, the first symbol is N2=1 OFDM symbols starting from the N1=1th symbol in the fifth symbol.

As shown in Figure 13, the third symbol of the first CORESET includes two OFDM symbols, the fifth symbol of the second CORESET includes one OFDM symbol, and the first symbol of the first DMRS is the third OFDM symbol. One OFDM symbol in the symbols, the first symbol is N2=1 OFDM symbols starting from the N1=2th symbol in the third symbol.

As shown in FIG. 14, the third symbol of the first CORESET and the fifth symbol of the second CORESET both include two consecutive OFDM symbols, and the third symbol and the fifth symbol overlap in one of the OFDM symbols, The first symbol is an OFDM symbol that overlaps the second symbol and the fourth symbol, and the first symbol is N2=1 OFDM symbols starting from the N1=1th symbol in the fifth symbol; Alternatively, the first symbol is N2=1 OFDM symbols starting from the N1=2th symbol in the third symbol.

The frequency domain position of the first DMRS may be set according to actual needs, and the first DMRS may occupy all or part of subcarriers. Figures 12-14 only show two ways in which the first DMRS and the third DMRS occupy the same symbol, and the first DMRS and the third DMRS occupy the same symbol and respectively occupy different subcarrier.

It should be understood that the symbol length occupied by each PDCCH and each CORESET can be predefined by the protocol or configured by the network side, and can also be set to 3 or 4, etc.

It can be seen from the technical solutions provided by the above embodiments of the present application that in the embodiments of the present application, the network side device determines the position of the symbol of the first DMRS associated with the first PDCCH according to various preset methods, so that the terminal can Accurately acquire the first DMRS at the second time domain position, and successfully perform channel estimation and demodulation on the first PDCCH.

Based on the above embodiment, further, the second frequency domain position of the first DMRS in the step 210 includes the index value (PRB index) of the first PRB, and the first PRB is the PRB where the first DMRS is located ; The first PRB index is determined by at least one of the following:

The index value (RB index) of the resource block (Resource Block, RB) where the first PDCCH is located;

The RB index of the resource block where the first CORESET is located.

In an implementation manner, the first PRB index may be the same as the RB index of the first PDCCH, that is, full coverage, or has a corresponding relationship with the PB index of the first PDCCH, that is, partial coverage.

In another implementation manner, the first PRB index may be the same as the RB index of the first CORESET, that is, full coverage, or has a corresponding relationship with the RB index of the first CORESET, that is, partial coverage.

In an implementation manner, the first DMRS is transmitted on all or part of the subcarriers where the first PRB is located.

In one embodiment, the second frequency domain position further includes an index value of a first subcarrier, where the first subcarrier is a subcarrier occupied by the first DMRS; the index of the first subcarrier The value is determined by the first index N3 and the second index N4; wherein, the first index N3 is used to indicate the subcarrier interval (interval), that is, the interval number of each subcarrier in the first subcarrier can be known through N3, The second indicator is used to indicate an offset value (offset) of the first subcarrier.

Further, the first index and the second index are predefined by the protocol or configured by the network side.

In an implementation manner, the index value k of the first subcarrier is determined by the following formula:

k=N3×n+N4, n=0,1,...

Wherein, N3 is the first index, and N4 is the second index.

As shown in Figure 3-8, N3=1 and N4=0 corresponding to the index value k of the first subcarrier in 3a, 4a, 5a, 6a, 7a and 8a; 3b, 4b, 5b, 6b, 7b and N3=2, N4=0 corresponding to the index value k of the first subcarrier in 8b; N3=2 corresponding to the index value k of the first subcarrier in 3c, 4c, 5c, 6c, 7c, and 8c, N4=1.

As shown in Figure 9-14, the index value k=N3×n+N4, n=0,1,..., where N3 =2, N4=1, the index value of the subcarrier corresponding to the second DMRS or the third DMRS k'=N3'×n+N4', n=0,1,..., where N3'=2, N4 '=0; N3=2, N4=0 corresponding to the index value k of the first subcarrier in 9b, 10b, 11b, 11c, 12b, 13b, 14b, and the subcarrier corresponding to the second DMRS or the third DMRS The index value k' of the carrier corresponds to N3'=2 and N4'=1.

Further, the index value or the second index of the first subcarrier is determined by at least one of the following:

The relative positional relationship between the position of the first DMRS in the time domain and the position of the first symbol where the first PDCCH is located; as shown in Figure 3 and Figure 4, when the first symbol is located before the first PDCCH, It can be set as k or N4 corresponding to 3b, and when the first symbol is located after the first PDCCH, it can be set as k or N4 corresponding to 4c;

The relative positional relationship between the position of the first DMRS in the time domain and the position of the first symbol where the first CORESET is located; as shown in Figure 3 and Figure 4, when the first symbol is located before the first CORESET, It can be set as k or N4 corresponding to 3c, and when the first symbol is located after the first CORESET, it can be set as k or N4 corresponding to 4b;

The identifier of the first PDCCH; as shown in Figure 3, according to the identifier of the first PDCCH, k or N4 corresponding to 3a, 3b or 3c can be set respectively;

The minimum or maximum value of the index value (CCE index) of the control channel element (Control Channel Element, CCE) occupied by the first PDCCH; as shown in Figure 3, according to the index value of the CCE occupied by the first PDCCH The minimum or maximum value can be set as k or N4 corresponding to 3a, 3b or 3c respectively;

The sign of the search space (Search Space) corresponding to the first PDCCH; As shown in Figure 3, according to the sign of the Search Space corresponding to the first PDCCH, k or N4 corresponding to 3a, 3b or 3c can be set respectively;

The identifier of the first CORESET; as shown in FIG. 3 , according to the identifier of the first CORESET, k or N4 corresponding to 3a, 3b or 3c can be set respectively.

It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application determine the second frequency domain position of the first DMRS associated with the first PDCCH, so that the terminal can accurately obtain the DMRS based on the second frequency domain position. The first DMRS, and successfully perform channel estimation and demodulation on the first PDCCH.

Based on the above embodiment, further, the determination of the second time domain position and/or the second frequency domain position in step 210 may be further combined with the time domain position and the second DMRS of the second PDCCH paired with the first PDCCH /or a frequency domain position, or a time domain position and/or a frequency domain position of the third DMRS of the second CORESET paired with the first CORESET.

In an implementation manner, the second time domain position is the same as the time domain position of the second DMRS of the second PDCCH; wherein, the second PDCCH is a PDCCH paired with the first PDCCH. It specifically includes: the symbol position where the first DMRS is located is completely or partly the same as the symbol position where the second DMRS is located.

In an implementation manner, the second frequency domain position is different from the frequency domain position of the second DMRS of the second PDCCH.

For example, as shown in Figures 9-11, the second symbol of the first PDCCH and the fourth symbol of the second PDCCH may occupy one or two OFDM symbols respectively, and the symbol position of the first DMRS is the same as that of the fourth symbol of the second PDCCH. The symbol positions of the two DMRSs are the same, which are N2=1 OFDM symbols starting from the N1=1-th symbol between the second symbol and the fourth symbol. However, the subcarriers occupied by the first DMRS are different from the subcarriers occupied by the second DMRS, and the subcarriers occupied by the first DMRS are k=N3×n+N4, n=0, 1,...; The subcarriers occupied by the two DMRSs are k'=N3'×n+N4', n=0, 1, . . . Among them, N3=2, N4=1, N3'=2, N4'=0 in 9a, 10a, 11a, 11d, N3=2, N4=0, N3'=2, N4 in 9b, 10b, 11b, 11c '=1.

It should be understood that the first PDCCH may have a pairing relationship with multiple PDCCHs, that is, there are multiple second PDCCHs, and the second time domain position is the same as the time domain position of the second DMRS of the second PDCCH, It includes: the symbol positions where the first DMRS is located are all or partly the same as the symbol positions where each second DMRS is located.

Taking the case where the first PDCCH is paired with two second PDCCHs as an example for illustration, the first PDCCH is paired with the second PDCCH-1, and the first PDCCH is paired with the second PDCCH-2, the The second DMRS-1 is a DMRS corresponding to the second PDCCH-1, and the second DMRS-2 is a DMRS corresponding to the second PDCCH-2.

As shown in FIG. 15, the second symbol of the first PDCCH, the fourth symbol of the second PDCCH-1 and the fourth symbol of the second PDCCH-2 all include an OFDM symbol, and the first DMRS is located Part of the symbol position is the same as the symbol position of the second DMRS-1, and part of it is the same as the symbol position of the second DMRS-2. However, the subcarriers occupied by the first DMRS and the second DMRS-1 are different, the subcarriers occupied by the first DMRS and the second DMRS-2 are different, and the subcarriers occupied by the first DMRS in different OFDM symbols The subcarriers are also different. In 15a, in the symbol where the second DMRS-1 is located, N3=2 and N4=0 corresponding to the subcarrier k corresponding to the first DMRS, and N3 corresponding to the subcarrier k′ corresponding to the second DMRS-1 '=2, N4'=1, in the symbol where the second DMRS-2 is located, the subcarrier k corresponding to the first DMRS corresponds to N3=2, N4=1, and the second DMRS-2 corresponds to N3'=2, N4'=0 corresponding to subcarrier k'; in 15b, in the symbol where the second DMRS-1 is located, N3=2, N4=1 corresponding to subcarrier k corresponding to the first DMRS, The subcarrier k' corresponding to the second DMRS-1 corresponds to N3'=2, N4'=0, and in the symbol where the second DMRS-2 is located, the subcarrier k corresponding to the first DMRS corresponds to N3 =2, N4=0, N3'=2, N4'=1 corresponding to the subcarrier k' corresponding to the second DMRS-2.

As shown in FIG. 16, the third symbol of the first PDCCH, the fourth symbol of the second PDCCH-1 and the fourth symbol of the second PDCCH-2 all include an OFDM symbol, and the first DMRS is located The symbol position of , the symbol position of the second DMRS-1 and the symbol position of the second DMRS-2 are all the same. The subcarriers occupied by the first DMRS are different from those of the second DMRS-1 and the second DMRS-2. In 16a, the subcarrier k corresponding to the first DMRS corresponds to N3=2, N4=1, the subcarrier k' corresponding to the second DMRS-1 corresponds to N3'=2, N4'=0, and the second The subcarrier k' corresponding to the second DMRS-2 corresponds to N3'=2, N4'=0; the subcarrier k corresponding to the first DMRS in 16b corresponds to N3=2, N4=0, and the second DMRS- The subcarrier k' corresponding to 1 corresponds to N3'=2 and N4'=1, and the subcarrier k' corresponding to the second DMRS-2 corresponds to N3'=2 and N4'=1.

In another implementation manner, the second time domain position is the same as the time domain position of the third DMRS of the second CORESET; wherein, the second CORESET is a control resource set paired with the first CORESET. It specifically includes: the symbol position where the first DMRS is located is completely or partly the same as the symbol position where the third DMRS is located.

In another implementation manner, the second frequency domain position is different from the frequency domain position of the third DMRS of the second CORESET.

For example, as shown in FIG. 9-14, the third symbol of the first CORESET and the fifth symbol of the second CORESET may respectively include one or two OFDM symbols, and the symbol position where the first DMRS is located is the same as The symbol position of the third DMRS is the same, which is the N2=1 OFDM symbol starting from the N1=1th symbol between the third symbol and the fifth symbol, or the N2=1 OFDM symbol in the third symbol N2 = 1 OFDM symbol starting from the N1 = 2th symbol, and N2 = 1 OFDM symbol starting from the N1 = 1st symbol in the fifth symbol. However, the subcarriers occupied by the first DMRS and the third DMRS are different, the subcarriers occupied by the first DMRS are k=N3×n+N4, n=0, 1,...; the subcarriers occupied by the third DMRS The subcarriers are k″=N3″×n+N4″, n=0, 1,…. Among them, N3=N3″=2, N4=1, N4 in 9a, 10a, 11a, 11d, 12a, 13a, 14a "=0, N3=2, N4=0, N3"=2, N4"=1 in 9b, 10b, 11b, 11c, 12b, 13b, 14b.

It should be understood that the first CORESET may have a pairing relationship with multiple CORESETs, that is, there are multiple second CORESETs, and the second time domain position is the same as the time domain position of the third DMRS of the second CORESET, It includes: the symbol positions where the first DMRS is located are all or partly the same as the symbol positions where each third DMRS is located.

Taking the case where the first CORESET is paired with two second CORESETs as an example for illustration, the first CORESET is paired with the second CORESET-1, and the first CORESET is paired with the second CORESET-2, the The third DMRS-1 is a DMRS corresponding to the second CORESET-1, and the third DMRS-2 is a DMRS corresponding to the second CORESET-2.

As shown in FIG. 15, the third symbol of the first CORESET, the fifth symbol of the second CORESET-1 and the fifth symbol of the second CORESET-2 all include one OFDM symbol, and the first DMRS is located Part of the symbol position of the third DMRS-1 is the same as the symbol position of the third DMRS-2, and part of the symbol position of the third DMRS-2 is the same. In 15a, in the symbol where the third DMRS-1 is located, N3=2 and N4=0 corresponding to the subcarrier k corresponding to the first DMRS, and N3 corresponding to the subcarrier k″ corresponding to the third DMRS-1 "=2, N4"=1, in the symbol where the third DMRS-2 is located, N3=2, N4=1 corresponding to the subcarrier k corresponding to the first DMRS, and the corresponding subcarrier k of the third DMRS-2 Subcarrier k" corresponds to N3"=2, N4"=0; in 15b, in the symbol where the third DMRS-1 is located, N3=2, N4=1 corresponding to subcarrier k corresponding to the first DMRS, The subcarrier k" corresponding to the third DMRS-1 corresponds to N3"=2, N4"=0, and in the symbol where the third DMRS-2 is located, the subcarrier k corresponding to the first DMRS corresponds to N3 =2, N4=0, N3"=2, N4"=1 corresponding to the subcarrier k" corresponding to the third DMRS-2.

As shown in FIG. 16, the third symbol of the first CORESET, the fifth symbol of the second CORESET-1 and the fifth symbol of the second CORESET-2 all include one OFDM symbol, and the first DMRS is located The symbol position of , the symbol position of the third DMRS-1 and the symbol position of the third DMRS-2 are all the same. However, the subcarriers occupied by the first DMRS, the third DMRS-1 and the third DMRS-2 are all different. In 16a, the subcarrier k corresponding to the first DMRS corresponds to N3=2, N4=1, the subcarrier k" corresponding to the third DMRS-1 corresponds to N3"=2, N4"=0, the first The subcarrier k" corresponding to the three DMRS-2 corresponds to N3"=2, N4"=0; the subcarrier k corresponding to the first DMRS in 16b corresponds to N3=2, N4=0, and the third DMRS- The subcarrier k" corresponding to 1 corresponds to N3"=2, N4"=1, and the subcarrier k" corresponding to the third DMRS-2 corresponds to N3"=2, N4"=1.

It can be seen from the technical solutions provided by the above embodiments of the present application that in the embodiments of the present application, the time domain position of the first DMRS is set to be the same as the time domain position of the second DMRS or the same as the time domain position of the third DMRS, and the set The frequency domain position of the first DMRS is different from the frequency domain position of the second DMRS or different from the frequency domain position of the third DMRS, so that the DMRS of multiple PDCCHs occupy the same symbol in the time domain, reducing the overhead of transmitting DMRS, Save communication resources.

The communication resource determination method provided in the embodiment of the present application may be executed by a communication resource determination device. In the embodiment of the present application, the method for determining the communication resource performed by the device for determining the communication resource is taken as an example to describe the device for determining the communication resource provided in the embodiment of the present application.

As shown in FIG. 17 , the device for determining communication resources includes: a determining module 171 and a sending module 172 . Wherein, the determining module 171 is configured to determine the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. The second time domain position and/or the second frequency domain position; the sending module 172 is configured to send the first physical downlink control channel association to the terminal according to the second time domain position and/or the second frequency domain position The first demodulation reference signal; wherein, the first physical downlink control channel is based on discrete Fourier transform-spread-OFDM waveform transmission;

It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application determine the first solution associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH adjusting the second time domain position and/or the second frequency domain position of the reference signal; according to the second time domain position and/or the second frequency domain position, sending the first demodulation associated with the first physical downlink control channel to the terminal A reference signal, so that the terminal can accurately acquire the first DMRS based on the second time domain position and the second frequency domain position, and successfully perform channel estimation and demodulation on the first PDCCH, so as to improve data transmission efficiency.

Based on the above embodiment, further, the second time domain position includes a position of a first symbol, and the first symbol is a symbol where the first demodulation reference signal is located; the position of the first symbol includes at least the following one item:

is a specified symbol before or after the second symbol, and the second symbol is the symbol where the first physical downlink control channel is located;

is a designated symbol before or after a third symbol, and the third symbol is a symbol where the first control resource set is located;

where the second symbols are discontinuous, a designated symbol between the second symbols;

where the third symbols are discontinuous, a designated symbol between the third symbols;

is the specified symbol in said third symbol;

is a designated symbol between the second symbol and the fourth symbol, and the fourth symbol is a symbol where the second physical downlink control channel is located;

is a designated symbol between the third symbol and the fifth symbol, and the fifth symbol is a symbol where the second control resource set is located;

is the specified symbol in said fifth symbol;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.

Further, the specified symbols are N2 symbols starting from the N1-th symbol, and the N1 and N2 are predefined by the protocol or configured by the network side.

It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application determine the position of the symbol of the first DMRS associated with the first PDCCH according to multiple preset methods, so that the terminal can Accurately acquire the first DMRS at the domain position, and successfully perform channel estimation and demodulation on the first PDCCH.

Based on the above embodiment, further, the second frequency domain position includes an index value of a first physical resource block, and the first physical resource block is a physical resource block where the first demodulation reference signal is located; the second The index value of a physical resource block is determined by at least one of the following:

an index value of the resource block where the first physical downlink control channel is located;

The index value of the resource block where the first control resource set is located.

Further, the index value of the first physical resource block is the same as at least one of the following:

The index value of the resource block of the first physical downlink control channel;

The index value of the resource block of the first control resource set.

Further, the first demodulation reference signal is transmitted on all or part of the subcarriers where the first physical resource block is located.

Further, the second frequency domain position also includes an index value of a first subcarrier, where the first subcarrier is a subcarrier occupied by the first demodulation reference signal; the index value of the first subcarrier It is determined by a first index and a second index; wherein, the first index is used to indicate the subcarrier spacing, and the second index is used to indicate the offset value of the first subcarrier.

Further, the index value k of the first subcarrier is determined by the following formula:

k=N3×n+N4, n=0,1,...

Wherein, N3 is the first index, and N4 is the second index.

The relative positional relationship between the position of the first demodulation reference signal in the time domain and the position of the first symbol where the first physical downlink control channel is located;

The relative positional relationship between the position of the first demodulation reference signal in the time domain and the position of the first symbol where the first control resource set is located;

An identifier of the first physical downlink control channel;

The minimum value or maximum value of the index value of the control channel element occupied by the first physical downlink control channel;

An identifier of a search space corresponding to the first physical downlink control channel;

An identifier of the first set of control resources.

Based on the above embodiment, further, the second time domain position is at least one of the following:

It is the same as the time domain position of the second demodulation reference signal of the second physical downlink control channel;

same as the time domain position of the third demodulation reference signal of the second control resource set;

Further, the second frequency domain position is at least one of the following:

Different from the frequency domain position of the second demodulation reference signal of the second physical downlink control channel;

Different from the frequency domain position of the third demodulation reference signal of the second control resource set;

The apparatus for determining communication resources in this embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or other devices other than the terminal. Exemplarily, the terminal may include, but not limited to, the types of terminal 11 listed above, and other devices may be servers, Network Attached Storage (NAS), etc., which are not specifically limited in this embodiment of the present application.

The device for determining communication resources provided by the embodiments of the present application can implement the various processes implemented by the method embodiments in Fig. 2 to Fig. 16 and achieve the same technical effect. To avoid repetition, details are not repeated here.

As shown in FIG. 18 , the example of the present application provides a method for determining communication resources, and the method is executed by a terminal. In other words, the method can be executed by software or hardware installed in the terminal. The method for determining communication resources may include the following steps.

Step 181, the terminal determines the second time domain position of the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel And/or a second frequency domain position; wherein, the first time domain position is the time domain position of the first physical downlink control channel or the time domain of the first control resource set where the first physical downlink control channel is located Position: the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.

The step 182 can implement the method embodiment of the step 210 in FIG. 2 , and obtain the same or similar technical effects, and the repeated parts will not be repeated here.

Step 182: The terminal receives the first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel Channels are received based on discrete Fourier transform-spread-OFDM waveforms.

It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application determine the first solution associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH adjust the second time domain position and/or the second frequency domain position of the reference signal; according to the second time domain position and/or the second frequency domain position, obtain the information associated with the first physical downlink control channel of the network side equipment The first demodulation reference signal, so that the terminal can accurately obtain the first DMRS based on the second time domain position and the second frequency domain position, and successfully perform channel estimation and demodulation on the first PDCCH, so as to improve Data transfer efficiency.

is the specified symbol in said third symbol;

is the specified symbol in said fifth symbol;

The embodiment of the present application can realize the above-mentioned embodiment of the method for determining the second time domain position, and obtain the same technical effect, and the repeated part will not be repeated here.

It can be seen from the technical solutions provided by the above embodiments of the present application that in the embodiments of the present application, the terminal determines the position of the symbol of the first DMRS associated with the first PDCCH according to multiple preset methods, so that the terminal can be based on the first PDCCH. Accurately acquire the first DMRS at the second time domain position, and successfully perform channel estimation and demodulation on the first PDCCH.

The index value of the resource block of the first control resource set.

k=N3×n+N4, n=0,1,...

Wherein, N3 is the first index, and N4 is the second index.

An identifier of the first physical downlink control channel;

An identifier of the first set of control resources.

The embodiment of the present application can implement the method embodiment for determining the second frequency domain position as described below, and obtain the same technical effect, and the repeated part will not be repeated here.

Further, the second frequency domain position is at least one of the following:

The embodiment of the present application can realize the same method embodiment of the network side device, and obtain the same technical effect, and the repeated parts will not be repeated here.

As shown in FIG. 19 , the device for determining communication resources includes: a determining module 191 and a receiving module 192 . Wherein, the determining module 191 is configured to determine the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. The second time domain position and/or the second frequency domain position; the receiving module 192 is configured to receive the first physical downlink control channel associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position A demodulation reference signal; wherein, the first physical downlink control channel is received based on a discrete Fourier transform-spread-OFDM waveform; wherein the first time domain position is the first The time domain position of the physical downlink control channel or the time domain position of the first control resource set where the first physical downlink control channel is located; the first frequency domain position is the frequency domain position of the first physical downlink control channel or The frequency domain position of the first control resource set where the first physical downlink control channel is located.

It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application determine the first solution associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first PDCCH adjusting the second time domain position and/or the second frequency domain position of the reference signal; according to the second time domain position and/or the second frequency domain position, sending the first demodulation associated with the first physical downlink control channel to the terminal Reference signal, so that the first DMRS can be accurately obtained based on the second time domain position and the second frequency domain position, and channel estimation and demodulation of the first PDCCH can be smoothly performed, so as to improve data transmission efficiency.

is a designated symbol in said third symbol;

is the specified symbol in said fifth symbol;

It can be seen from the technical solutions provided by the above embodiments of the present application that the embodiments of the present application determine the position of the symbol of the first DMRS associated with the first PDCCH according to various preset methods, so that the position of the first DMRS associated with the first PDCCH can be determined based on the second time domain position Accurately acquire the first DMRS, and successfully perform channel estimation and demodulation on the first PDCCH.

Based on the above embodiment, further, the second frequency domain position includes an index value of a first physical resource block, where the first physical resource block is the physical resource block where the first demodulation reference signal is located; the second The index value of a physical resource block is determined by at least one of the following:

The index value of the resource block of the first control resource set.

k=N3×n+N4, n=0,1,...

Wherein, N3 is the first index, and N4 is the second index.

An identifier of the first physical downlink control channel;

An identifier of the first set of control resources.

Further, the second frequency domain position is at least one of the following:

The device for determining communication resources provided by the embodiment of the present application can implement various processes implemented by the method embodiment in FIG. 18 and achieve the same technical effect. To avoid repetition, details are not repeated here.

Optionally, as shown in FIG. 20 , this embodiment of the present application also provides a communication device 2000, including a processor 2001 and a memory 2002, and the memory 2002 stores programs or instructions that can run on the processor 2001, such as , when the communication device 2000 is a terminal, when the program or instruction is executed by the processor 2001, each step of the above embodiment of the method for determining a communication resource can be implemented, and the same technical effect can be achieved. When the communication device 2000 is a network-side device, when the program or instruction is executed by the processor 2001, the steps of the above embodiment of the method for determining communication resources can be implemented, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a network side device, including a processor and a communication interface, and the processor is configured to determine the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. The second time-domain position and/or the second frequency-domain position of the first demodulation reference signal associated with the physical downlink control channel, the communication interface is used to send to the terminal according to the second time-domain position and/or the second frequency-domain position Sending a first demodulation reference signal associated with the first physical downlink control channel; wherein, the first physical downlink control channel is sent based on a discrete Fourier transform-spread-OFDM waveform. The network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 21 , the network side device 2100 includes: an antenna 211 , a radio frequency device 212 , a baseband device 213 , a processor 214 and a memory 215 . The antenna 211 is connected to the radio frequency device 212 . In the uplink direction, the radio frequency device 212 receives information through the antenna 211, and sends the received information to the baseband device 213 for processing. In the downlink direction, the baseband device 213 processes the information to be sent and sends it to the radio frequency device 212 , and the radio frequency device 212 processes the received information and sends it out through the antenna 211 .

The method performed by the network side device in the above embodiments may be implemented in the baseband device 213, where the baseband device 213 includes a baseband processor.

The baseband device 213 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG. The program executes the network device operations shown in the above method embodiments.

The network side device may also include a network interface 216, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 2100 in the embodiment of the present application further includes: instructions or programs stored in the memory 215 and executable on the processor 214, and the processor 214 calls the instructions or programs in the memory 215 to execute the various programs shown in FIG. The method of module execution achieves the same technical effect, so in order to avoid repetition, it is not repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, and the processor is used to determine the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. The second time domain position and/or the second frequency domain position of the first demodulation reference signal associated with the control channel, the communication interface is used to obtain the network side device according to the second time domain position and/or the second frequency domain position The first demodulation reference signal associated with the first physical downlink control channel. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 22 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 2200 includes, but is not limited to: a radio frequency unit 2201, a network module 2202, an audio output unit 2203, an input unit 2204, a sensor 2205, a display unit 2206, a user input unit 2207, an interface unit 2208, a memory 2209, and a processor 2210. At least some parts.

Those skilled in the art can understand that the terminal 2200 can also include a power supply (such as a battery) for supplying power to various components, and the power supply can be logically connected to the processor 2210 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 22 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components, which will not be repeated here.

It should be understood that, in this embodiment of the present application, the input unit 2204 may include a graphics processing unit (Graphics Processing Unit, GPU) 22041 and a microphone 22042, and the graphics processor 22041 is used in video capture mode or image capture mode by an image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. The display unit 2206 may include a display panel 22061, and the display panel 22061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 2207 includes at least one of a touch panel 22071 and other input devices 22072 . Touch panel 22071, also called touch screen. The touch panel 22071 may include two parts, a touch detection device and a touch controller. Other input devices 22072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, after receiving the downlink data from the network side device, the radio frequency unit 2201 may transmit it to the processor 2210 for processing; in addition, the radio frequency unit 2201 may send uplink data to the network side device. Generally, the radio frequency unit 2201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 2209 can be used to store software programs or instructions as well as various data. The memory 2209 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playing function, image playback function, etc.), etc. Furthermore, memory 2209 may include volatile memory or nonvolatile memory, or, memory 2209 may include both volatile and nonvolatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synch link DRAM , SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DRRAM). The memory 2209 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 2210 may include one or more processing units; optionally, the processor 2210 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 2210 .

Wherein, the radio frequency unit 2201 is configured to obtain the first demodulation reference signal associated with the first physical downlink control channel of the network side device according to the second time domain position and/or the second frequency domain position; wherein, the The first physical downlink control channel is received based on discrete Fourier transform-spread-OFDM waveform.

The processor 2210 is configured to determine a second timing of the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. A domain position and/or a second frequency domain position; wherein, the first time domain position is the time domain position of the first physical downlink control channel or the first control resource set where the first physical downlink control channel is located Time domain position; the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.

Through the embodiment of the present application, the terminal can accurately obtain the first DMRS based on the second time domain position and the second frequency domain position, and successfully perform channel estimation and demodulation on the first PDCCH, so as to improve data transmission efficiency .

A specified symbol before or after the second symbol, where the second symbol is the symbol where the first physical downlink control channel is located;

is a designated symbol in said third symbol;

is the specified symbol in said fifth symbol;

Through the embodiments of the present application, the terminal can accurately acquire the first DMRS based on the second time domain position, and successfully perform channel estimation and demodulation on the first PDCCH.

The index value of the resource block of the first control resource set.

k=N3×k+N4, k=0,1,...

Wherein, N3 is the first index, and N4 is the second index.

An identifier of the first physical downlink control channel;

An identifier of the first set of control resources.

Through the embodiments of the present application, the terminal can accurately acquire the first DMRS based on the second frequency domain position, and successfully perform channel estimation and demodulation on the first PDCCH.

Further, the second frequency domain position is at least one of the following:

Through the embodiment of the present application, the DMRSs of multiple PDCCHs occupy the same symbol in the time domain, reducing the overhead of transmitting DMRSs and saving communication resources.

The embodiment of the present application also provides a readable storage medium. The readable storage medium stores a program or an instruction. When the program or instruction is executed by the processor, each process of the above embodiment of the communication resource determination method is implemented, and can achieve The same technical effects are not repeated here to avoid repetition.

Wherein, the processor is the processor in the terminal described in the foregoing embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk, and the like.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above embodiment of the method for determining communication resources Each process, and can achieve the same technical effect, in order to avoid repetition, will not repeat them here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

The embodiment of the present application further provides a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above method for determining communication resources Each process of the example, and can achieve the same technical effect, in order to avoid repetition, no more details here.

The embodiment of the present application also provides a communication resource determination system, including: a terminal and a network side device, the terminal can be used to perform the steps of the method for determining communication resources as described above, and the network side device can be used to perform the above steps The steps of the communication resource determining method.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, 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.

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

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

Claims

A communication resource determination method, comprising:

The network side device determines the second time domain position and the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel. /or a second frequency domain location;

The network side device sends a first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel It is transmitted based on discrete Fourier transform-spread-OFDM waveform;

Wherein, the first time domain position is the time domain position of the first physical downlink control channel or the time domain position of the first control resource set where the first physical downlink control channel is located; the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.
The method according to claim 1, wherein the second time domain position comprises a position of a first symbol, and the first symbol is a symbol where the first demodulation reference signal is located; the position of the first symbol Include at least one of the following:

is a specified symbol before or after the second symbol, and the second symbol is the symbol where the first physical downlink control channel is located;

is a designated symbol before or after a third symbol, and the third symbol is a symbol where the first control resource set is located;

where the second symbols are discontinuous, a designated symbol between the second symbols;

where the third symbols are discontinuous, a designated symbol between the third symbols;

is the specified symbol in said third symbol;

is a designated symbol between the second symbol and the fourth symbol, and the fourth symbol is a symbol where the second physical downlink control channel is located;

is a designated symbol between the third symbol and the fifth symbol, and the fifth symbol is a symbol where the second control resource set is located;

is the specified symbol in said fifth symbol;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.
The method according to claim 2, wherein the position of the specified symbol is predefined by the protocol or configured by the network side.
The method according to claim 3, wherein the specified symbols are N2 symbols starting from the N1-th symbol, and the N1 and N2 are predefined by the protocol or configured by the network side.
The method according to claim 1, wherein the second frequency domain position includes an index value of a first physical resource block, and the first physical resource block is a physical resource block where the first demodulation reference signal is located; The index value of the first physical resource block is determined by at least one of the following:

an index value of the resource block where the first physical downlink control channel is located;

The index value of the resource block where the first control resource set is located.
The method according to claim 5, wherein the index value of the first physical resource block is the same as at least one of the following:

The index value of the resource block of the first physical downlink control channel;

The index value of the resource block of the first control resource set.
The method according to claims 5 and 6, wherein the first demodulation reference signal is transmitted on all or part of the subcarriers where the first physical resource block is located.
The method according to claim 7, wherein the second frequency domain position further comprises an index value of a first subcarrier, and the first subcarrier is a subcarrier occupied by the first demodulation reference signal; The index value of the first subcarrier is determined by a first index and a second index; wherein, the first index is used to indicate the subcarrier spacing, and the second index is used to indicate the offset value of the first subcarrier.
The method according to claim 8, wherein the first index and the second index are predefined by a protocol or configured by a network side.
The method according to claim 8, wherein the index value k of the first subcarrier is determined by the following formula:

k=N3×n+N4, n=0,1,...

Wherein, N3 is the first index, and N4 is the second index.
The method according to any one of claims 8-10, wherein the index value or the second index of the first subcarrier is determined by at least one of the following:

The relative positional relationship between the position of the first demodulation reference signal in the time domain and the position of the first symbol where the first physical downlink control channel is located;

The relative positional relationship between the position of the first demodulation reference signal in the time domain and the position of the first symbol where the first control resource set is located;

An identifier of the first physical downlink control channel;

The minimum value or maximum value of the index value of the control channel element occupied by the first physical downlink control channel;

An identifier of a search space corresponding to the first physical downlink control channel;

An identifier of the first set of control resources.
The method according to claim 1, wherein the second time domain location is at least one of the following:

It is the same as the time domain position of the second demodulation reference signal of the second physical downlink control channel;

same as the time domain position of the third demodulation reference signal of the second control resource set;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.
The method according to claim 1, wherein the second frequency domain location is at least one of the following:

Different from the frequency domain position of the second demodulation reference signal of the second physical downlink control channel;

Different from the frequency domain position of the third demodulation reference signal of the second control resource set;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.
A device for determining communication resources, comprising:

A determining module, configured to determine the second time domain of the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel location and/or second frequency domain location;

A sending module, configured to send a first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel It is transmitted based on discrete Fourier transform-spread-OFDM waveform;

Wherein, the first time domain position is the time domain position of the first physical downlink control channel or the time domain position of the first control resource set where the first physical downlink control channel is located; the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.
A communication resource determination method, comprising:

The terminal determines the second time domain position and/or the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel second frequency domain position;

The terminal receives the first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel is based on Discrete Fourier transform-spread-OFDM waveform reception;

Wherein, the first time domain position is the time domain position of the first physical downlink control channel or the time domain position of the first control resource set where the first physical downlink control channel is located; the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.
The method according to claim 15, wherein the second time domain position comprises a position of a first symbol, and the first symbol is a symbol where the first demodulation reference signal is located; the position of the first symbol Include at least one of the following:

is a specified symbol before or after the second symbol, and the second symbol is the symbol where the first physical downlink control channel is located;

is a designated symbol before or after a third symbol, and the third symbol is a symbol where the first control resource set is located;

where the second symbols are discontinuous, a designated symbol between the second symbols;

where the third symbols are discontinuous, a designated symbol between the third symbols;

is a designated symbol in said third symbol;

is a designated symbol between the second symbol and the fourth symbol, and the fourth symbol is a symbol where the second physical downlink control channel is located;

is a designated symbol between the third symbol and the fifth symbol, and the fifth symbol is a symbol where the second control resource set is located;

is the specified symbol in said fifth symbol;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.
The method according to claim 16, wherein the position of the specified symbol is predefined by the protocol or configured by the network side.
The method according to claim 17, wherein the specified symbols are N2 symbols starting from the N1-th symbol, and the N1 and N2 are predefined by the protocol or configured by the network side.
The method according to claim 15, wherein the second frequency domain position includes an index value of a first physical resource block, and the first physical resource block is a physical resource block where the first demodulation reference signal is located; The index value of the first physical resource block is determined by at least one of the following:

an index value of the resource block where the first physical downlink control channel is located;

The index value of the resource block where the first control resource set is located.
The method according to claim 19, wherein the index value of the first physical resource block is the same as at least one of the following:

The index value of the resource block of the first physical downlink control channel;

The index value of the resource block of the first control resource set.
The method according to claims 19 and 20, wherein the first demodulation reference signal is transmitted on all or part of the subcarriers where the first physical resource block is located.
The method according to claim 20, wherein the second frequency domain position further comprises an index value of a first subcarrier, and the first subcarrier is a subcarrier occupied by the first demodulation reference signal; The index value of the first subcarrier is determined by a first index and a second index; wherein, the first index is used to indicate the subcarrier spacing, and the second index is used to indicate the offset value of the first subcarrier.
The method according to claim 22, wherein the first index and the second index are predefined by a protocol or configured by a network side.
The method according to claim 22, wherein the index value k of the first subcarrier is determined by the following formula:

k=N3×n+N4, n=0,1,...

Wherein, N3 is the first index, and N4 is the second index.
The method according to any one of claims 22-24, wherein the index value or the second index of the first subcarrier is determined by at least one of the following:

The relative positional relationship between the position of the first demodulation reference signal in the time domain and the position of the first symbol where the first physical downlink control channel is located;

The relative positional relationship between the position of the first demodulation reference signal in the time domain and the position of the first symbol where the first control resource set is located;

An identifier of the first physical downlink control channel;

The minimum value or maximum value of the index value of the control channel element occupied by the first physical downlink control channel;

An identifier of a search space corresponding to the first physical downlink control channel;

An identifier of the first set of control resources.
The method according to claim 15, wherein the second time domain location is at least one of the following:

It is the same as the time domain position of the second demodulation reference signal of the second physical downlink control channel;

same as the time domain position of the third demodulation reference signal of the second control resource set;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.
The method according to claim 15, wherein the second frequency domain location is at least one of the following:

Different from the frequency domain position of the second demodulation reference signal of the second physical downlink control channel;

Different from the frequency domain position of the third demodulation reference signal of the second control resource set;

Wherein, the second physical downlink control channel is a physical downlink control channel paired with the first physical downlink control channel, and the second control resource set is a control resource set paired with the first control resource set.
A device for determining communication resources, comprising:

A determining module, configured to determine the second time domain of the first demodulation reference signal associated with the first physical downlink control channel according to the first time domain position and/or the first frequency domain position corresponding to the first physical downlink control channel location and/or second frequency domain location;

A receiving module, configured to receive a first demodulation reference signal associated with the first physical downlink control channel according to the second time domain position and/or the second frequency domain position; wherein, the first physical downlink control channel Received based on discrete Fourier transform-spread-OFDM waveform;

Wherein, the first time domain position is the time domain position of the first physical downlink control channel or the time domain position of the first control resource set where the first physical downlink control channel is located; the first frequency domain position is the frequency domain position of the first physical downlink control channel or the frequency domain position of the first control resource set where the first physical downlink control channel is located.
A network side device, comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, any one of claims 1 to 13 can be realized. The steps of the communication resource determination method described in the item.
A terminal, including a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are executed by the processor, the process described in any one of claims 15 to 27 is implemented. Steps of the communication resource determination method described above.
A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the communication resource determination method according to any one of claims 1-13 is implemented, or the communication resource determination method according to any one of claims 1-13 is implemented, or the The steps of the communication resource determination method according to any one of claims 15 to 27.