CN112543086B - Design method for control resource set, network equipment and terminal equipment - Google Patents

Abstract

The embodiment of the application discloses a design method for controlling a resource set, network equipment and terminal equipment, wherein the method applied to the network equipment comprises the following steps: configuring a control resource set to adopt single carrier wave waveform transmission; the control resource set comprises a first type symbol and a second type symbol, wherein the first type symbol is used for transmitting a reference signal, and the second type symbol is used for transmitting control information; and sending the configuration information of the control resource set. Thus, the reference signal and the control information can occupy separate symbols, thereby avoiding frequency division multiplexing of different control resource sets, and ensuring better coverage performance by transmitting the control channel by a single carrier.

Description

Design method, network equipment and terminal equipment for controlling resource collection

technical field

The present application relates to wireless communication technologies, and in particular to a method for designing a set of control resources, network equipment and terminal equipment.

Background technique

In the Long Term Evolution (LTE) system, the downlink channel uses a multi-carrier Orthogonal Frequency Division Multiplexing (OFDM) waveform, and the uplink channel uses a single-carrier waveform, specifically discrete Fourier transform Spread spectrum orthogonal frequency division multiplexing (Discrete Fourier Transform-Spread-OFDM, DFT-S-OFDM). In the New Radio (NR) system, the downlink channel adopts OFDM waveform, and the uplink channel adopts two configurable waveforms, wherein the two waveforms are OFDM and DFT-S-OFDM respectively. The uplink adopts single-carrier DFT-S-OFDM because the single-carrier has a lower peak-to-average power ratio (Peak to Average Power Ratio, PAPR), and higher transmit power can be used to send data, which can effectively improve the user's uplink coverage performance.

The downlink control channel of the NR system introduces the concept of a control resource set, which includes a certain number of frequency domain resources (in units of resource blocks (RB)) and time domain resources (in units of OFDM symbols). In the control resource set, the base station sends downlink control information to the user, and the user blindly detects the downlink control information in the corresponding search space in the configured control resource set.

Adopting single-carrier transmission is a method to effectively improve the coverage performance of the control channel. In the coverage performance-oriented scenario, the channel conditions between the user and the base station are poor, and more control time-frequency resources need to be occupied. The single-carrier control resource set and the multi-carrier control resource set adopt Frequency Division Multiplexing (FDM). , FDM) method, will lose the PAPR gain brought by the single carrier, and can no longer reflect the advantages of the single carrier control resource set.

Contents of the invention

In order to solve the above technical problems, the embodiments of the present application expect to provide a method for designing a set of control resources, a network device, and a terminal device.

The technical scheme of the present application is realized like this:

In the first aspect, a method for designing a control resource set is provided, which is applied to a network device. The method includes: configuring the control resource set to be transmitted by a single-carrier waveform; wherein, the control resource set includes symbols of the first type and symbols of the second type. A type of symbol, the first type of symbol is used to transmit a reference signal, and the second type of symbol is used to transmit control information; and configuration information of the control resource set is sent.

In a second aspect, a method for designing a set of control resources is provided, which is applied to a terminal device. The method includes: acquiring waveform indication information of the set of control resources; determining that the set of control resources uses a single Carrier waveform transmission; wherein, the set of control resources includes symbols of a first type and symbols of a second type, the symbols of the first type are used for transmitting reference signals, and the symbols of the second type are used for transmitting control information.

In a third aspect, a data transmission method is provided, which is applied to a network device, and the method includes:

Send downlink control information DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform.

In a fourth aspect, a data receiving method is provided, which is applied to a terminal device, and the method includes:

Acquire DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform.

In a fifth aspect, a network device is provided, and the network device includes:

The first configuration unit is configured to configure the control resource set to be transmitted using a single carrier waveform; wherein the control resource set includes a first type of symbol and a second type of symbol, the first type of symbol is used to transmit a reference signal, and the second type of symbol Class II symbols are used to transmit control information;

The first communication unit is configured to send configuration information of the set of control resources.

In a sixth aspect, a terminal device is provided, and the terminal device includes:

a second communication unit, configured to acquire waveform indication information of the set of control resources;

The first processing unit is configured to determine, based on the waveform indication information, that the control resource set uses a single carrier waveform for transmission; wherein the control resource set includes a first type of symbol and a second type of symbol, and the first type of symbol is used For transmitting reference signals, the second type of symbols is used for transmitting control information.

In a seventh aspect, a network device is provided, and the network device includes:

The third communication unit is configured to send downlink control information DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform.

In an eighth aspect, a terminal device is provided, and the terminal device includes:

The fourth communication unit is configured to acquire DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform.

A ninth aspect provides a network device, including: a first processor and a first memory configured to store a computer program that can run on the processor, wherein the first processor is configured to run the computer program , execute the steps of the method in the first aspect or the third aspect.

In a tenth aspect, a terminal device is provided, including: a second processor and a second memory configured to store a computer program that can run on the processor, wherein the second processor is configured to run the computer program , execute the steps of the method in the second aspect or the fourth aspect.

In an eleventh aspect, a computer-readable storage medium is provided, on which a computer program is stored, wherein, when the computer program is executed by a processor, the steps of the aforementioned method are implemented.

Using the above technical solution, when the single carrier waveform is used to transmit the control resource set, the configured control resource set includes the first type of symbols and the second type of symbols, the reference signal occupies the first type of symbols alone, and the control information independently occupies the second type of symbols, so that Frequency division multiplexing of different control resource sets is avoided, so that a single carrier transmits the control channel to ensure better coverage performance.

Description of drawings

FIG. 1 is a first schematic flowchart of a design method of a control resource set in an embodiment of the present application;

FIG. 2 is a schematic diagram of a composition structure of a control resource set in the prior art;

FIG. 3 is a schematic diagram of a first component structure of a control resource set in an embodiment of the present application;

FIG. 4 is a schematic diagram of a second component structure of a control resource set in an embodiment of the present application;

FIG. 5 is a schematic diagram of the first structure of the search space configuration in the embodiment of the present application;

FIG. 6 is a schematic diagram of a second structure of a search space configuration in an embodiment of the present application;

FIG. 7 is a second schematic flowchart of a design method of a control resource set in an embodiment of the present application;

FIG. 8 is a schematic flowchart of a data sending method in an embodiment of the present application;

FIG. 9 is a schematic flowchart of a data receiving method in an embodiment of the present application;

FIG. 10 is a schematic diagram of a first composition structure of a network device in an embodiment of the present application;

FIG. 11 is a schematic diagram of a second composition structure of a network device in an embodiment of the present application;

FIG. 12 is a schematic diagram of a third composition structure of a network device in an embodiment of the present application;

FIG. 13 is a schematic diagram of a first composition structure of a terminal device in an embodiment of the present application;

FIG. 14 is a schematic diagram of a second composition structure of a terminal device in an embodiment of the present application;

FIG. 15 is a schematic diagram of a third composition structure of a terminal device in an embodiment of the present application.

Detailed ways

In order to understand the characteristics and technical contents of the embodiments of the present application in more detail, the implementation of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present application.

The embodiment of the present application provides a method for designing a set of control resources, which is applied to a network device and used to indicate that a waveform of a control channel is a single-carrier waveform. Fig. 1 is a schematic flowchart of a first flow chart of a method for designing a set of control resources according to an embodiment of the present application. As shown in Fig. 1, the method may specifically include:

Step 101: Configure a control resource set to be transmitted using a single-carrier waveform; wherein, the control resource set includes a first type of symbol and a second type of symbol, the first type of symbol is used to transmit a reference signal, and the second type of symbol is used for for transmission of control information;

Step 102: Send configuration information of the set of control resources.

Here, the subject of execution of steps 101 to 102 may be a processor of a network device. Here, the network device may be a fixed station or a base station for communicating with terminal devices, specifically, it may be an access point, Node B, base station, enhanced base station, evolved Node B (evolved Node B, eNB) or other names. A terminal device may be a user device having a wireless communication function. For example, smartphones, personal computers (such as tablets, desktop computers, notebooks, netbooks, PDAs, etc.), e-book readers, portable multimedia players, audio/video players, video cameras, virtual reality devices, and wearable devices, etc. .

In some embodiments, the configuration information of the control resource set includes waveform indication information; wherein the waveform indication information is used to indicate that the control resource set uses a single carrier waveform for transmission.

In practical applications, since the single-carrier control resource set is not suitable for frequency-domain multiplexing of multi-carrier control resource sets, and the single-carrier control resource set is mainly for coverage enhancement scenarios, it will occupy more time-frequency resources. Therefore, it is considered that a single carrier control resource set occupies relatively large frequency domain resources. For example, the NR system has relatively large bandwidth and supports the design of a bandwidth part (BWP). Therefore, based on the bandwidth of the control resource set, it is possible to implicitly indicate that the control resource set uses a single-carrier waveform transmission to reduce signaling overhead, without requiring additional signaling to indicate the control channel waveform. Here, the BWP refers to part of the frequency domain resources within the carrier bandwidth allocated by the base station to the terminal. The size of the BWP is less than or equal to the maximum bandwidth supported by the terminal, and the BWP can be a continuous frequency domain resource. For example, the BWP can include multiple consecutive subcarriers, and the BWP can include multiple consecutive physical resource blocks (physical resource blocks, PRB) .

In practical applications, the waveform indication information is the bandwidth information of the control resource set, and when the bandwidth information is the entire bandwidth of the part bandwidth BWP or the preset frequency domain resource, it implicitly indicates that the control resource set adopts a single carrier Waveform transmission.

Specifically, when the number of the preset frequency domain resources is greater than the preset characteristic value, it is implicitly indicated that the set of control resources is transmitted in the form of a single carrier. For example, the control resource set includes a certain number of frequency domain resources, and the frequency domain resources can be based on RBs. When the number of RBs of the frequency domain resources is greater than the preset characteristic value (for example, the preset characteristic value is 20 RBs), the control resource set is determined Transmission using a single carrier waveform.

In some embodiments, the set of control resources includes a first-type symbol and at least one second-type symbol; wherein, the first-type symbol is the first symbol in the control resource set, and the at least one The second type of symbols are symbols after the first symbol in the set of control resources.

FIG. 2 is a schematic diagram of the composition structure of the control resource set in the prior art. Currently, the control resource set is configured with a maximum of 3 OFDM symbols, including a certain number of CCEs. As shown in Figure 2, the control resource set is configured with 2 OFDM symbols in the time domain, and occupies part of the bandwidth in the frequency domain. The control resource set includes k+1 CCEs, and each CCE includes 6 REGs, and is first Time domain followed by frequency domain mapping. Each REG occupies one RB in the frequency domain and one OFDM symbol in the time domain. Each REG includes 12 REs, among which 3 REs are used to send reference signals, and the remaining 9 REs are used to send control information.

In the embodiment of the present application, when the control resource set is transmitted using a single-carrier waveform, in order to ensure better coverage performance of the single-carrier, the reference signal occupies a separate OFDM symbol, and the control information occupies the rest of the symbols.

Figure 3 is a schematic diagram of the first component structure of the control resource set in the embodiment of the present application. As shown in Figure 3, the control resource set occupies X symbols in the time domain and the entire bandwidth in the frequency domain, and the single carrier control resource The set reference signal occupies the first symbol (ie, the first type of symbol) in the control resource set, and the control information occupies one or more symbols (ie, at least one second type of symbol) after the first symbol. For example, when X=2, the first symbol in the control resource set is used to transmit a demodulation reference signal (Demodulation Reference Signal, DMRS), and the second symbol is used to transmit DCI. When X=3, the first symbol in the control resource set is used to transmit DMRS, and the second and third symbols are used to transmit DCI. When X=4, the first symbol in the control resource set is used to transmit DMRS, and the second to fourth symbols are used to transmit DCI.

Correspondingly, the method further includes: configuring radio resource control (Radio Resource Control, RRC) signaling of the control resource set, to indicate quasi-co-located (QCL) of the first type of symbol and the second type of symbol information.

Exemplarily, the symbols of the first type and the symbols of the second type have the same QCL information, that is, indicate that the control information and the reference signal are sent through the same beam.

In some other embodiments, the set of control resources includes at least one symbol group; wherein, each symbol group includes one first-type symbol and at least one second-type symbol.

FIG. 4 is a schematic diagram of the second composition structure of the control resource set in the embodiment of the present application. As shown in FIG. 4, the control resource set occupies X symbols in the time domain and occupies the entire bandwidth in the frequency domain, which is a single carrier control The resource set is configured with an even number of symbols, and every two symbols are a group, and reference signals and control information are sent in sequence. The first symbol in each group is used to transmit DMRS, and the second symbol is used to transmit DCI. For example, when X can take 2, 4, 6, 8, 10 and other even numbers.

Correspondingly, the method further includes: configuring the RRC signaling of the control resource set to indicate the QCL information of the first type of symbols and the second type of symbols.

Exemplarily, the first-type symbols occupied by reference signals in each symbol group and the second-type symbols occupied by control information have the same QCL information, that is, they are sent through the same beam; symbols between different symbol groups may have the same The QCL information or different QCL information can be sent through the same beam or through different beams, and the QCL indication information is realized through the RRC signaling indication for configuring the control resource set.

In some embodiments, the method further includes: configuring detection indication information; wherein the detection indication information is used to indicate a search space when the terminal device detects the set of control resources. Here, the search space is to realize flexible scheduling among users. Each terminal device is assigned a control channel search space, and users need to blindly detect whether there is their own control channel in the search space according to predetermined rules.

Specifically, the detection indication information includes: the detection indication information includes: an indication of an aggregation level and/or an indication of a starting symbol position; wherein, the aggregation level is in units of symbols.

Here, the aggregation level (Aggregation Level) is used to indicate the number of search symbols, and the start symbol position is used to indicate the start symbol position of the search. In the prior art, the aggregation level is divided into 4 levels, corresponding to the values of 1, 2, 4, and 8, indicating the number of Control Channel Elements (CCEs) that the PDCCH of the terminal device may occupy, where CCE is the control channel element (CCE) The basic unit of channel physical resources, each CCE is composed of 9 resource element groups (Resource Element Group, REG), and each REG contains 4 available resource elements (Resource Element, RE). The starting position is used to indicate the starting CCE position of blind detection.

In the embodiment of the present application, the aggregation level can introduce a new parameter slot aggregation level (Slot AggregationLevel, SAL), or reuse the existing AL parameter configuration, but the physical meaning of the multiplexed AL is different from the existing AL, take The latter AL has the same physical meaning as the newly introduced SAL.

The position of the start symbol can be fixedly set as the symbol occupied by the first control information, or the start symbol corresponding to the user equipment can be determined through the identification information of the user equipment.

The blind detection process of the first composition structure and the second composition structure of the control resource set will be described with examples below.

FIG. 5 is a schematic diagram of the first structure of the search space configuration in the embodiment of the present application; as shown in FIG. 5, the control resource set includes 3 symbols, namely symbol #0, symbol #1 and symbol #2, and SAL1 indicates that it occupies 1 symbol The control channel candidates of SAL2 represent the control channel candidates occupying 2 symbols.

Specifically, SAL1 is configured as 1, indicating that only the symbol occupied by the first control information of the control resource set is blindly detected, that is, symbol #1, and subsequent symbols are not blindly detected;

SAL1 is configured as 2, which means that symbol #1 and symbol #2 are blindly detected respectively, and symbol #1 and symbol #2 are not blindly detected at the same time;

SAL2 is configured as 1, indicating that it is necessary to blindly detect symbol 1 and symbol 2 at the same time;

SAL1 is configured as 1, and SAL2 is configured as 1, indicating that only the symbol occupied by the first control information of the control resource set is blindly detected, that is, symbol #1, and subsequent symbols are not blindly detected; at the same time, symbol 1 and symbol 2 are blindly detected ;

SAL1 is configured as 1, and SAL1 is configured as 2 to detect two symbols, that is, to blindly detect symbol #1 and symbol #2 respectively, and to blindly detect symbol #1 and symbol #2 at the same time. Here, the simultaneous blind detection can be that different symbols transmit the same redundancy version (Redundancy Version, RV), or different symbols transmit different RVs, and the terminal side performs combined detection operations according to the configuration.

In practical applications, when SAL1 is configured as 1, the start symbol of blind detection can be fixedly set to the symbol occupied by the first control information, or the start symbol corresponding to the user equipment can be determined through the identification information of the user equipment.

Figure 6 is a schematic diagram of the second structure of the search space configuration in the embodiment of the present application; as shown in Figure 6, the control resource set includes 4 symbols, which are divided into 2 symbol groups, that is, group #0 and group #1, SAL1 means occupied A control channel candidate of 1 control resource group (2 symbols, reference signal symbol+control information symbol), SAL2 indicates a control channel candidate occupying 2 control resource groups (4 symbols).

Specifically, SAL1 is configured as 1, which means that only the symbols of the first symbol group of the control resource set are blindly detected, that is, group #0, and symbols of other control resource groups are not blindly detected;

SAL1 is configured as 2, which means to blindly detect group #0 and group #1 respectively, but not to blindly detect group #0 and group #1 at the same time;

SAL2 is configured as 1, indicating simultaneous blind detection of group #0 and group #1;

SAL1 is configured as 1, and SAL2 is configured as 1, indicating that only blind detection of the first symbol group of the control resource set, that is, group #0, and blind detection of group #0 and group #1 at the same time;

SAL1 is configured as 2, and SAL2 is configured as 1, indicating blind detection of group #0 and group #1 respectively, and simultaneous blind detection of group #0 and group #1; here, simultaneous blind detection can be that different symbol groups transmit the same RedundancyVersion (RedundancyVersion, RV), or different symbol groups transmit different RVs, and the terminal side performs a merge detection operation according to the configuration.

In practical applications, when SAL1 is configured as 1, the symbol group for blind detection can be fixed as group #0, or the initial symbol group corresponding to the user equipment can be determined through the identification information of the user equipment.

Here, depending on the design structure of the single-carrier control resource set, the design of the search space based on the symbol level effectively utilizes the characteristics of the single-carrier, and the implementation complexity is low and easy to implement.

Using the above technical solution, when the single carrier waveform is used to transmit the control resource set, the configured control resource set includes the first type of symbols and the second type of symbols, the reference signal occupies the first type of symbols alone, and the control information independently occupies the second type of symbols, so that Frequency division multiplexing of different control resource sets is avoided, so that a single carrier transmits the control channel to ensure better coverage performance.

Based on the same inventive concept, the embodiment of the present application also provides another method for designing a control resource set, which is applied to a terminal device and used to indicate that the waveform of the control channel is a single-carrier waveform. Fig. 7 is a second schematic flow chart of the method for designing a set of control resources in the embodiment of the present application. As shown in Fig. 7, the method may specifically include:

Step 701: Obtain waveform indication information of the set of control resources;

Step 702: Based on the waveform indication information, determine that the control resource set adopts single-carrier waveform transmission; wherein, the control resource set includes a first type of symbol and a second type of symbol, and the first type of symbol is used to transmit a reference signal , the second type of symbols are used to transmit control information.

In some embodiments, the waveform indication information is the bandwidth information of the control resource set, and when the bandwidth information is the entire bandwidth of the BWP or the preset frequency domain resources, it implicitly indicates that the control resource set uses a single carrier Waveform transmission.

In practical applications, since the single-carrier control resource set is not suitable for frequency-domain multiplexing of multi-carrier control resource sets, and the single-carrier control resource set is mainly for coverage enhancement scenarios, it will occupy more time-frequency resources. Therefore, it is considered that a single carrier control resource set occupies relatively large frequency domain resources. For example, the NR system has relatively large bandwidth and supports the design of a bandwidth part (BWP). Therefore, based on the bandwidth of the control resource set, it is possible to implicitly indicate that the control resource set adopts single-carrier waveform transmission to reduce signaling overhead, without indicating the control channel waveform through additional signaling. Here, the BWP refers to part of the frequency domain resources within the carrier bandwidth allocated by the base station to the terminal. The size of the BWP is less than or equal to the maximum bandwidth supported by the terminal, and the BWP can be a continuous frequency domain resource. For example, the BWP can include multiple consecutive subcarriers, and the BWP can include multiple consecutive physical resource blocks (physical resource blocks, PRB) .

Specifically, when the number of the preset frequency domain resources is greater than the preset characteristic value, it is implicitly indicated that the set of control resources is transmitted in the form of a single carrier. For example, the control resource set includes a certain number of frequency domain resources, and the frequency domain resources may be in units of RBs. When the number of RBs occupied by the frequency domain resources is larger than the preset characteristic value (for example, the preset characteristic value is 20 RBs), It is determined that the set of control resources is transmitted using a single carrier waveform.

In some embodiments, the set of control resources includes a first-type symbol and at least one second-type symbol; wherein, the first-type symbol is the first symbol in the control resource set, and the at least one The second type of symbols are symbols after the first symbol in the set of control resources.

FIG. 2 is a schematic diagram of the composition structure of the control resource set in the prior art. Currently, the control resource set is configured with a maximum of 3 OFDM symbols, including a certain number of CCEs. As shown in Figure 2, the control resource set is configured with 2 OFDM symbols in the time domain, and occupies part of the bandwidth in the frequency domain. The control resource set includes k+1 CCEs, and each CCE includes 6 REGs, and is first Time domain followed by frequency domain mapping. Each REG occupies one RB in the frequency domain and one OFDM symbol in the time domain. Each REG includes 12 REs, among which 3 REs are used to send reference signals, and the remaining 9 REs are used to send control information.

In the embodiment of the present application, when the control resource set is transmitted using a single-carrier waveform, in order to ensure better coverage performance of the single-carrier, the reference signal occupies a separate OFDM symbol, and the control information occupies the rest of the symbols.

Figure 3 is a schematic diagram of the first component structure of the control resource set in the embodiment of the present application. As shown in Figure 3, the control resource set occupies X symbols in the time domain and the entire bandwidth in the frequency domain, and the single carrier control resource The aggregated reference signal occupies the first symbol (ie, the first type of symbol) in the control resource set, and the control information occupies one or more symbols (ie, at least one second type of symbol) after the first symbol. For example, when X=2, the first symbol in the control resource set is used to transmit a demodulation reference signal (Demodulation Reference Signal, DMRS), and the second symbol is used to transmit DCI. When X=3, the first symbol in the control resource set is used to transmit DMRS, and the second and third symbols are used to transmit DCI. When X=4, the first symbol in the control resource set is used to transmit DMRS, and the second to fourth symbols are used to transmit DCI.

Correspondingly, the method further includes: configuring radio resource control (Radio Resource Control, RRC) signaling of the control resource set, to indicate quasi-co-located (QCL) of the first type of symbol and the second type of symbol information.

Exemplarily, the symbols of the first type and the symbols of the second type have the same QCL information, that is, indicate that the control information and the reference signal are sent through the same beam.

In some other embodiments, the set of control resources includes at least one symbol group; wherein, each symbol group includes one first-type symbol and at least one second-type symbol.

FIG. 4 is a schematic diagram of the second composition structure of the control resource set in the embodiment of the present application. As shown in FIG. 4, the control resource set occupies X symbols in the time domain and occupies the entire bandwidth in the frequency domain, which is a single carrier control The resource set is configured with an even number of symbols, and every two symbols are a group, and reference signals and control information are sent in sequence. The first symbol in each group is used to transmit DMRS, and the second symbol is used to transmit DCI. For example, when X can take 2, 4, 6, 8, 10 and other even numbers.

Correspondingly, the method further includes: configuring the RRC signaling of the control resource set to indicate the QCL information of the first type of symbols and the second type of symbols.

Exemplarily, the first-type symbols occupied by reference signals in each symbol group and the second-type symbols occupied by control information have the same QCL information, that is, they are sent through the same beam; symbols between different symbol groups may have the same The QCL information or different QCL information can be sent through the same beam or through different beams, and the QCL indication information is realized through the RRC signaling indication for configuring the control resource set.

In some embodiments, the method further includes: configuring detection indication information; wherein the detection indication information is used to indicate a search space when the terminal device detects the set of control resources. Here, the search space is to realize flexible scheduling among users. Each terminal device is assigned a control channel search space, and users need to blindly detect whether there is their own control channel in the search space according to predetermined rules.

Specifically, the detection indication information includes: the detection indication information includes: an indication of an aggregation level and/or an indication of a starting symbol position; wherein, the aggregation level is in units of symbols.

Here, the aggregation level (Aggregation Level) is used to indicate the number of search symbols, and the start symbol position is used to indicate the start symbol position of the search. In the prior art, the aggregation levels are divided into 4 levels, corresponding to the values of 1, 2, 4, and 8, indicating the number of Control Channel Elements (CCEs) that the PDCCH of the terminal device may occupy, where CCE is the control channel element (CCE) The basic unit of channel physical resources, each CCE is composed of 9 resource element groups (Resource Element Group, REG), and each REG contains 4 available resource elements (Resource Element, RE). The starting position is used to indicate the starting CCE position of blind detection.

In the embodiment of the present application, the aggregation level can introduce a new parameter slot aggregation level (Slot AggregationLevel, SAL), or reuse the existing AL parameter configuration, but the physical meaning of the multiplexed AL is different from the existing AL, take The latter AL has the same physical meaning as the newly introduced SAL.

The position of the start symbol can be fixedly set as the symbol occupied by the first control information, or the start symbol corresponding to the user equipment can be determined through the identification information of the user equipment.

The blind detection process of the first composition structure and the second composition structure of the control resource set will be described with examples below.

FIG. 5 is a schematic diagram of the first structure of the search space configuration in the embodiment of the present application; as shown in FIG. 5, the control resource set includes 3 symbols, namely symbol #0, symbol #1 and symbol #2, and SAL1 indicates that it occupies 1 symbol The control channel candidates of SAL2 represent the control channel candidates occupying 2 symbols.

Specifically, SAL1 is configured as 1, indicating that only the symbol occupied by the first control information of the control resource set is blindly detected, that is, symbol #1, and subsequent symbols are not blindly detected;

SAL1 is configured as 2, which means that symbol #1 and symbol #2 are blindly detected respectively, and symbol #1 and symbol #2 are not blindly detected at the same time;

SAL2 is configured as 1, indicating that it is necessary to blindly detect symbol 1 and symbol 2 at the same time;

SAL1 is configured as 1, and SAL2 is configured as 1, indicating that only the symbol occupied by the first control information of the control resource set is blindly detected, that is, symbol #1, and subsequent symbols are not blindly detected; at the same time, symbol 1 and symbol 2 are blindly detected ;

SAL1 is configured as 1, and SAL1 is configured as 2 to detect two symbols, that is, to blindly detect symbol #1 and symbol #2 respectively, and to blindly detect symbol #1 and symbol #2 at the same time. Here, the simultaneous blind detection can be that different symbols transmit the same redundancy version (Redundancy Version, RV), or different symbols transmit different RVs, and the terminal side performs combined detection operations according to the configuration.

In practical applications, when SAL1 is configured as 1, the start symbol of blind detection can be fixedly set to the symbol occupied by the first control information, or the start symbol corresponding to the user equipment can be determined through the identification information of the user equipment.

Figure 6 is a schematic diagram of the second structure of the search space configuration in the embodiment of the present application; as shown in Figure 6, the control resource set includes 4 symbols, which are divided into 2 symbol groups, that is, group #0 and group #1, SAL1 means occupied A control channel candidate of 1 control resource group (2 symbols, reference signal symbol+control information symbol), SAL2 indicates a control channel candidate occupying 2 control resource groups (4 symbols).

Specifically, SAL1 is configured as 1, which means that only the symbols of the first symbol group of the control resource set are blindly detected, that is, group #0, and symbols of other control resource groups are not blindly detected;

SAL1 is configured as 2, which means to blindly detect group #0 and group #1 respectively, but not to blindly detect group #0 and group #1 at the same time;

SAL2 is configured as 1, indicating simultaneous blind detection of group #0 and group #1;

SAL1 is configured as 1, and SAL2 is configured as 1, indicating that only blind detection of the first symbol group of the control resource set, that is, group #0, and blind detection of group #0 and group #1 at the same time;

SAL1 is configured as 2, and SAL2 is configured as 1, indicating blind detection of group #0 and group #1 respectively, and simultaneous blind detection of group #0 and group #1; here, simultaneous blind detection can be that different symbol groups transmit the same RedundancyVersion (RedundancyVersion, RV), or different symbol groups transmit different RVs, and the terminal side performs a merge detection operation according to the configuration.

In practical applications, when SAL1 is configured as 1, the symbol group for blind detection can be fixed as group #0, or the initial symbol group corresponding to the user equipment can be determined through the identification information of the user equipment.

Here, depending on the design structure of the single-carrier control resource set, the design of the search space based on the symbol level effectively utilizes the characteristics of the single-carrier, and the implementation complexity is low and easy to implement.

Using the above technical solution, when a single-carrier waveform is used to transmit the control resource set, the configured control resource set includes the first type of symbols and the second type of symbols, the reference signal occupies the first type of symbols alone, and the control information independently occupies the second type of symbols, so that Frequency division multiplexing of different control resource sets is avoided, so that a single carrier transmits the control channel to ensure better coverage performance.

The embodiment of the present application also provides a data sending method, which is applied to a network device and used to indicate that a waveform of a data channel is a single-carrier waveform. FIG. 8 is a schematic flow diagram of a data sending method in an embodiment of the present application. As shown in FIG. 8, the method may specifically include:

Step 801: Send downlink control information DCI, the DCI indicates that the scheduled data channel adopts single-carrier waveform transmission.

In practical applications, the method further includes: by configuring the frequency domain resource allocation domain in the DCI as the entire bandwidth of the BWP or preset frequency domain resources, implicitly indicating that the scheduled data channel adopts single-carrier waveform transmission.

Specifically, the resource allocation field in the DCI field is used to implicitly indicate the transmission waveform of the control resource set. For example, if the scheduling bandwidth of the control resource set indicated by the resource allocation field is the entire bandwidth of the frequency band, it is determined that the control resource set uses a single carrier waveform for transmission; or the control resource set includes a certain number of frequency domain resources, and the frequency domain resources can be expressed in RB In a unit, when the number of RBs that occupy a large frequency domain resource is greater than a preset characteristic value (for example, the preset characteristic value is 20 RBs), it is determined that the control resource set is transmitted using a single-carrier waveform. This implicit indication method using waveform indication information can realize dynamic indication of different waveforms to better adapt to different scenarios; in addition, the multiplexing resource allocation domain implements implicit indication, which can reduce DCI overhead.

The embodiment of the present application also provides a data receiving method, which is applied to a terminal device and used to indicate that the waveform of the data channel is a single-carrier waveform. Fig. 9 is a schematic flow chart of the data receiving method in the embodiment of the present application. As shown in Fig. 9, the method may specifically include:

Step 901: Acquire DCI, and the DCI indicates that the scheduled data channel adopts single-carrier waveform transmission.

In some embodiments, the frequency domain resource allocation domain in the DCI is obtained, and when the frequency domain resource allocation domain is configured as the entire bandwidth of the BWP or preset frequency domain resources, it is determined that the data channel adopts a single carrier waveform.

Specifically, the resource allocation field in the DCI field is used to implicitly indicate the transmission waveform of the control resource set. For example, if the scheduling bandwidth of the control resource set indicated by the resource allocation field is the entire bandwidth of the frequency band, it is determined that the control resource set uses a single carrier waveform for transmission; or if the number of frequency domain resources in the resource allocation field is greater than the preset characteristic value, the implicit The formula indicates that the set of control resources is transmitted in the form of a single carrier. For example, the control resource set includes a certain number of frequency domain resources, and the frequency domain resources may be in units of RBs. When the number of RBs occupied by the frequency domain resources is larger than the preset characteristic value (for example, the preset characteristic value is 20 RBs), It is determined that the set of control resources is transmitted using a single carrier waveform. This implicit indication method using waveform indication information can realize dynamic indication of different waveforms to better adapt to different scenarios; in addition, the multiplexing resource allocation domain implements implicit indication, which can reduce DCI overhead.

The embodiment of the present application also provides a first network device, as shown in Figure 10, the network device includes:

The first configuration unit 1001 is configured to configure a control resource set to be transmitted using a single-carrier waveform; wherein, the control resource set includes a first type of symbol and a second type of symbol, the first type of symbol is used to transmit a reference signal, and the The second type of symbols is used to transmit control information;

The first communication unit 1002 is configured to send configuration information of the set of control resources.

In some embodiments, the configuration information of the control resource set includes waveform indication information; wherein the waveform indication information is used to indicate that the control resource set uses a single carrier waveform for transmission.

In some embodiments, the waveform indication information is the bandwidth information of the control resource set, and when the bandwidth information is the entire bandwidth of the partial bandwidth BWP or the preset frequency domain resources, it implicitly indicates that the control resource set uses Single carrier waveform transmission.

In some embodiments, the set of control resources includes a first-type symbol and at least one second-type symbol; wherein, the first-type symbol is the first symbol in the control resource set, and the at least one The second type of symbols are symbols after the first symbol in the set of control resources.

In some embodiments, the first configuring unit is further configured to configure detection indication information; wherein the detection indication information is used to indicate a search space for the terminal device to detect the set of control resources.

In some embodiments, the detection indication information includes: an indication of an aggregation level and/or an indication of a starting symbol position; wherein, the aggregation level is in units of symbols.

The embodiment of the present application also provides a second network device, as shown in Figure 11, the network device includes:

The third communication unit 1101 is configured to send downlink control information DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform.

In some embodiments, the network device further includes: a second configuration unit 1102, configured to implicitly indicate the scheduled frequency domain resources by configuring the frequency domain resource allocation domain in the DCI as the entire bandwidth of the BWP or preset frequency domain resources. The data channel is transmitted using a single carrier waveform.

In some embodiments, when the frequency-domain resource allocation domain is such that when the number of preset frequency-domain resources is greater than a preset characteristic value, it implicitly indicates that the set of control resources is transmitted in the form of a single carrier.

The embodiment of the present application also provides a third network device. As shown in FIG. 12 , the network device includes: a first processor 1201 and a first memory configured to store computer programs that can run on the first processor 1201 1202, wherein the first processor 1201 is configured to execute the steps of the foregoing method applied to a network device when running the computer program.

Of course, in actual application, as shown in FIG. 12 , various components in the network device are coupled together through the first bus system 1203 . It can be understood that the first bus system 1203 is used to realize connection and communication between these components. In addition to the data bus, the first bus system 1203 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as the first bus system 1203 in FIG. 12 .

The embodiment of the present application also provides the first type of terminal equipment, as shown in Figure 13, the terminal equipment includes:

The second communication unit 1301 is configured to acquire waveform indication information of the set of control resources;

The first processing unit 1302 is configured to determine, based on the waveform indication information, that the control resource set adopts a single-carrier waveform transmission; wherein, the control resource set includes a first type of symbol and a second type of symbol, and the first type of symbol Used for transmitting reference signals, the second type of symbols is used for transmitting control information.

In some embodiments, the waveform indication information is the bandwidth information of the control resource set, and when the bandwidth information is the entire bandwidth of the BWP or the preset frequency domain resources, it implicitly indicates that the control resource set uses a single carrier Waveform transmission.

In some embodiments, when the number of the preset frequency domain resources is greater than a preset characteristic value, it implicitly indicates that the set of control resources is transmitted in the form of a single carrier.

In some embodiments, the set of control resources includes a first-type symbol and at least one second-type symbol; wherein, the first-type symbol is the first symbol in the control resource set, and the at least one The second type of symbols are symbols after the first symbol in the set of control resources.

In some embodiments, the set of control resources includes at least one symbol group; wherein, each symbol group includes one first-type symbol and at least one second-type symbol.

In some embodiments, the processing unit is further configured to acquire detection indication information; and determine a search space for detecting the set of control resources based on the detection indication information.

In some embodiments, the detection indication information includes: an indication of an aggregation level and/or an indication of a starting symbol position; wherein, the aggregation level is in units of symbols.

The embodiment of the present application also provides a second type of terminal equipment, as shown in Figure 14, the network equipment includes:

The fourth communication unit 1401 is configured to obtain DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform.

In some embodiments, the terminal device further includes: a second processing unit 1402, configured to obtain a frequency domain resource allocation field in DCI, when the frequency domain resource allocation field is configured as the entire bandwidth of the BWP or the preset frequency When domain resources are used, it is determined that the data channel adopts a single-carrier waveform.

In some embodiments, the frequency-domain resource allocation field is configured to implicitly indicate that the set of control resources is transmitted in a single-carrier form when the number of preset frequency-domain resources is greater than a preset characteristic value.

The embodiment of the present application also provides a third terminal device. As shown in FIG. 15 , the terminal device includes: a second processor 1501 and a second memory 1502 configured to store computer programs that can run on the second processor 1501 ; Wherein, the second processor 1501 is configured to execute the steps of the aforementioned method applied to the terminal device when running the computer program.

Of course, in actual application, as shown in FIG. 15 , various components in the network device are coupled together through the second bus system 1503 . It can be understood that the second bus system 1503 is used to realize connection and communication between these components. In addition to the data bus, the second bus system 1503 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as the second bus system 1503 in FIG. 15 .

In practical applications, the above-mentioned processor can be an application-specific integrated circuit (ASIC, Application Specific Integrated Circuit), a digital signal processing device (DSPD, Digital Signal Processing Device), a programmable logic device (PLD, Programmable Logic Device), a field programmable gate At least one of an array (Field-Programmable Gate Array, FPGA), a controller, a microcontroller, and a microprocessor. It can be understood that, for different devices, the electronic device used to implement the above processor function may also be other, which is not specifically limited in this embodiment of the present application.

Above-mentioned memory can be volatile memory (volatile memory), such as random access memory (RAM, Random-Access Memory); Or non-volatile memory (non-volatile memory), such as read-only memory (ROM, Read-Only Memory), flash memory (flash memory), hard disk (HDD, Hard Disk Drive) or solid-state drive (SSD, Solid-State Drive); or a combination of the above types of memory, and provide instructions and data to the processor.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to any network device or terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding functions implemented by the processor in the methods of the embodiments of the present application For the sake of brevity, the process will not be repeated here.

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

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

In addition, each functional unit in each embodiment of the present invention can be integrated into one processing module, or each unit can be used as a single unit, or two or more units can be integrated into one unit; the above-mentioned integration The unit can be realized in the form of hardware or in the form of hardware plus software functional unit. Those of ordinary skill in the art can understand that all or part of the steps to realize the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the Including the steps of the foregoing method embodiments; and the foregoing storage medium includes: a removable storage device, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc. A medium on which program code can be stored.

The methods disclosed in several method embodiments provided in this application can be combined arbitrarily to obtain new method embodiments under the condition of no conflict.

The features disclosed in several product embodiments provided in this application can be combined arbitrarily without conflict to obtain new product embodiments.

The features disclosed in several method or device embodiments provided in this application can be combined arbitrarily without conflict to obtain new method embodiments or device embodiments.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (23)

1. A method for designing a set of control resources, applied to a network device, characterized in that the method comprises: Configure the control resource set to be transmitted using a single-carrier waveform; wherein, the control resource set includes a first type of symbol and a second type of symbol, the first type of symbol is used to transmit a reference signal, and the second type of symbol is used for transmission control Information; wherein, the resource allocation field in the DCI field is used to implicitly indicate the transmission waveform of the control resource set; Send configuration information of the set of control resources. 2. The method according to claim 1, wherein the configuration information of the control resource set includes waveform indication information; wherein the waveform indication information is used to indicate that the control resource set adopts single-carrier waveform transmission. 3. The method according to claim 2, wherein the waveform indication information is the bandwidth information of the control resource set, and when the bandwidth information is the entire bandwidth of the partial bandwidth BWP or the preset frequency domain resources, It implicitly indicates that the set of control resources is transmitted using a single-carrier waveform. 4. The method according to claim 3, wherein when the number of the preset frequency-domain resources is greater than a preset characteristic value, it implicitly indicates that the set of control resources is transmitted in a single-carrier form. 5. The method according to claim 1, wherein the set of control resources comprises a first-type symbol and at least one second-type symbol; Wherein, the first type of symbol is the first symbol in the control resource set, and the at least one second type of symbol is a symbol after the first symbol in the control resource set; The symbols of the first type and the symbols of the second type have the same quasi-co-located QCL information. 6. The method according to claim 1, wherein the set of control resources comprises at least one symbol group; Wherein, each symbol group includes a first-type symbol and at least one second-type symbol; The symbols of the first type and the symbols of the second type in each symbol group have the same QCL information. 7. The method according to any one of claims 1-6, wherein the method further comprises: Configuring detection indication information; wherein, the detection indication information is used to indicate a search space when the terminal device detects the set of control resources. 8. The method according to claim 7, wherein the detection indication information comprises: an indication of an aggregation level and/or an indication of a starting symbol position; wherein the aggregation level is in units of symbols. 9. A method for designing a set of control resources, applied to a terminal device, characterized in that the method comprises: Acquiring waveform indication information of the set of control resources; Based on the waveform indication information, it is determined that the control resource set uses a single carrier waveform for transmission; wherein the control resource set includes a first type of symbol and a second type of symbol, the first type of symbol is used to transmit a reference signal, and the The second type of symbols is used to transmit control information; where the resource allocation field in the DCI field is used to implicitly indicate the transmission waveform of the control resource set. 10. The method according to claim 9, wherein the waveform indication information is the bandwidth information of the control resource set, and when the bandwidth information is the entire bandwidth of the BWP or the preset frequency domain resource, implicitly Instructing the set of control resources to be transmitted using a single-carrier waveform. 11. The method according to claim 10, wherein when the number of the preset frequency domain resources is greater than a preset characteristic value, it implicitly indicates that the set of control resources is transmitted in the form of a single carrier. 12. The method according to claim 9, wherein the set of control resources includes a symbol of the first type and at least one symbol of the second type; wherein the symbol of the first type is a symbol in the set of control resources The first symbol, the at least one second-type symbol is a symbol after the first symbol in the control resource set; The symbols of the first type and the symbols of the second type have the same quasi-co-located QCL information. 13. The method according to claim 9, wherein the set of control resources includes at least one symbol group; wherein each symbol group includes a first-type symbol and at least one second-type symbol; The symbols of the first type and the symbols of the second type in each symbol group have the same QCL information. 14. The method according to any one of claims 9-13, wherein the method further comprises: Obtain detection instruction information; Based on the detection indication information, determine a search space for detecting the set of control resources. 15. The method according to claim 14, wherein the detection indication information comprises: an indication of an aggregation level and/or an indication of a starting symbol position; wherein the aggregation level is in units of symbols. 16. A data sending method applied to a network device, wherein the method comprises: Send downlink control information DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform; By configuring the frequency domain resource allocation domain in the DCI as the entire bandwidth of the BWP or preset frequency domain resources, it is implicitly indicated that the scheduled data channel adopts single-carrier waveform transmission. 17. A data receiving method applied to a terminal device, characterized in that the method comprises: Acquiring DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform; Obtain the frequency domain resource allocation domain in the DCI, and when the frequency domain resource allocation domain is configured as the entire bandwidth of the BWP or preset frequency domain resources, determine that the data channel adopts a single carrier waveform. 18. A network device, characterized in that the network device comprises: The first configuration unit is configured to configure the control resource set to be transmitted using a single carrier waveform; wherein the control resource set includes a first type of symbol and a second type of symbol, the first type of symbol is used to transmit a reference signal, and the second type of symbol The second type of symbol is used to transmit control information; wherein, the resource allocation field in the DCI field is used to implicitly indicate the transmission waveform of the control resource set; The first communication unit is configured to send configuration information of the set of control resources. 19. A terminal device, characterized in that the terminal device comprises: A second communication unit, configured to acquire waveform indication information of a set of control resources; The first processing unit is configured to determine, based on the waveform indication information, that the control resource set uses a single carrier waveform for transmission; wherein the control resource set includes a first type of symbol and a second type of symbol, and the first type of symbol is used For the transmission of reference signals, the second type of symbols is used for transmission of control information; where the resource allocation field in the DCI field is used to implicitly indicate the transmission waveform of the control resource set. 20. A network device, the network device comprising: The third communication unit is configured to send downlink control information DCI, where the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform; The second configuration unit is configured to implicitly indicate that the scheduled data channel adopts single-carrier waveform transmission by configuring the frequency domain resource allocation domain in the DCI as the entire bandwidth of the BWP or the preset frequency domain resources. 21. A terminal device, the terminal device comprising: The fourth communication unit is configured to obtain DCI, and the DCI indicates that the scheduled data channel is transmitted using a single-carrier waveform; The second processing unit is configured to obtain a frequency domain resource allocation domain in the DCI, and determine that the data channel adopts a single carrier waveform when the frequency domain resource allocation domain is configured as the entire bandwidth of the BWP or preset frequency domain resources. 22. A network device comprising: a first processor and a first memory configured to store a computer program executable on the first processor, Wherein, the first processor is configured to execute the steps of the method according to any one of claims 1 to 8 or 16 when running the computer program. 23. A terminal device comprising: a second processor and a second memory configured to store a computer program executable on the second processor, Wherein, the second processor is configured to execute the steps of the method according to any one of claims 9 to 15 or 17 when running the computer program.

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