Sounding reference signal generation method and apparatus

Abstract

The application provides a sounding reference signal generation method and device, generates SRS based on a TD-OCC sequence, can reduce interference between SRSs, and is thus beneficial to channel estimation of a network device. The method can include: receiving first configuration information, the first configuration information being used to configure a repetition factor of SRS in a time domain, the value of the repetition factor being a positive integer greater than or equal to 1; determining a TD-OCC sequence matched with the repetition factor, the sequence length of the TD-OCC sequence being less than or equal to the value of the repetition factor; and generating SRS based on the TD-OCC sequence.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method and apparatus for generating a detection reference signal. Background Technology

[0002] In time-division duplex (TDD) scenarios, network devices can measure the sounding reference signal (SRS) transmitted by user equipment (UE) to obtain uplink channel information, and infer the channel state information (CSI) of the downlink channel based on the reciprocity of the uplink and downlink channels. In the 3GPP (3rd Generation Partnership Project)... rd The 3GPP (3G Generation Partnership Project) standard, Release 18, introduced Coherent Joint Transmission (CJT), which can support up to four network devices simultaneously providing downlink transmission for the UE. With the introduction of CJT, more transmission reception points (TRPs) need to use SRS for channel estimation, thus significantly increasing the demand for SRS. This introduces more interference between SRSs, which directly affects the channel estimation of network devices. Therefore, reducing SRS interference is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] This application provides a method and apparatus for generating a detection reference signal, which can reduce interference between SRS, thereby facilitating channel estimation by network devices.

[0004] In a first aspect, this application provides a method for generating a sounding reference signal (SRS). The method may include: receiving first configuration information, the first configuration information being used to configure a repetition factor of the SRS in the time domain, the repetition factor being a positive integer greater than or equal to 1; determining a time division orthogonal cover code (TD-OCC) sequence that matches the repetition factor, the sequence length of the TD-OCC sequence being less than or equal to the value of the repetition factor; and generating the SRS based on the TD-OCC sequence.

[0005] It is evident that generating TD-OCC sequences based on repetition factors, and then generating SRS based on TD-OCC sequences, can reduce interference between SRS, thereby benefiting network devices in channel estimation. Generating SRS based on TD-OCC sequences can also improve system capacity.

[0006] In one possible implementation, determining the TD-OCC sequence matching the repetition factor may include: generating a TD-OCC sequence matching the repetition factor based on a first TD-OCC sequence and / or a second TD-OCC sequence. The sequence length of the first TD-OCC sequence is a first threshold, and the sequence length of the second TD-OCC sequence is a second threshold, where the first threshold is less than the second threshold. The first and second TD-OCC sequences can be existing TD-OCC sequences. Generating a TD-OCC sequence for generating SRS based on existing TD-OCC sequences can improve the utilization rate of existing TD-OCC sequences and save signaling overhead.

[0007] In one possible implementation, the sequence length of the TD-OCC sequence used to generate the SRS is divisible by a first threshold and / or a second threshold, and the sequence length of the TD-OCC sequence used to generate the SRS is equal to the value of the repeat factor. This allows for full utilization of existing TD-OCC sequences.

[0008] In one possible implementation, the sequence length of the TD-OCC sequence used to generate the SRS cannot be divided by a first threshold and / or a second threshold, and the sequence length of the TD-OCC sequence used to generate the SRS is less than the value of the repetition factor. This helps to improve system capacity.

[0009] In one possible implementation, the method further includes receiving a first modification command, which instructs modification of a first TD-OCC sequence and / or a second TD-OCC sequence. This helps to improve the flexibility of the generated SRS.

[0010] In one possible implementation, the method further includes: receiving second configuration information, the second configuration information being used to configure one or more reference TD-OCC sequences for the SRS; determining a TD-OCC sequence matching the repetition factor, which may include: generating a TD-OCC sequence matching the repetition factor based on one or more reference TD-OCC sequences. Therefore, the network device can instruct the terminal device to use which TD-OCC sequences(s) to generate the TD-OCC sequence for generating the SRS, so that the network device can quickly process the received SRS.

[0011] In one possible implementation, the method further includes receiving a second modification command, which instructs the modification of one or more reference TD-OCC sequences. This helps to improve the flexibility of the generated SRS.

[0012] In one possible implementation, both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources. The method further includes discarding the time-domain resources of the SRS and transmitting the physical uplink channel on the time-domain resources of the physical uplink channel. Therefore, in the event of a conflict between the time-domain resources of the SRS and the time-domain resources of the physical uplink channel, the physical uplink channel is transmitted first to avoid time-domain conflicts.

[0013] In one possible implementation, both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources. The method further includes: determining the conflicting TD-OCC sequences corresponding to the first time-domain resources and discarding the SRS symbols corresponding to the conflicting TD-OCC sequences. Therefore, when the time-domain resources of the SRS conflict with the time-domain resources of the physical uplink channel, discarding the SRS symbols corresponding to the conflicting TD-OCC sequences avoids time-domain conflicts while still allowing the transmission of some SRS symbols.

[0014] In one possible implementation, the repetition factor is taken from a preset set of values. This preset set of values ​​can be predefined by the protocol or indicated by higher-level parameters.

[0015] Secondly, this application provides a method for generating a detection reference signal, which may include: sending first configuration information, the first configuration information being used to configure a repetition factor of the SRS in the time domain, the repetition factor being a positive integer greater than or equal to 1; the repetition factor being used to determine a TD-OCC sequence matching the repetition factor, the sequence length of the TD-OCC sequence being less than or equal to the value of the repetition factor, the TD-OCC sequence being used to generate the SRS.

[0016] It is evident that by sending the first configuration information, the terminal device can generate SRS based on the TD-OCC sequence, which can reduce interference between SRS and improve system capacity.

[0017] In one possible implementation, the method further includes sending second configuration information, which configures one or more reference TD-OCC sequences for the SRS, so that the terminal device generates a TD-OCC sequence matching the repetition factor based on the one or more reference TD-OCC sequences. Thus, the network device can instruct the terminal device to use which TD-OCC sequences to generate the TD-OCC sequence for generating the SRS, enabling the network device to quickly process the received SRS.

[0018] In one possible implementation, the method further includes sending a second modification command, which instructs the modification of one or more reference TD-OCC sequences. As can be seen, the second modification command improves flexibility.

[0019] In one possible implementation, the repetition factor is taken from a preset set of values. This preset set of values ​​can be predefined by the protocol or indicated by higher-level parameters.

[0020] Thirdly, this application provides a communication device. In one implementation, the device includes a processing unit and a communication unit. The communication unit is configured to receive first configuration information, which configures a repetition factor of the SRS in the time domain, wherein the repetition factor is a positive integer greater than or equal to 1. The processing unit is configured to determine a TD-OCC sequence matching the repetition factor, wherein the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor. Based on the TD-OCC sequence, an SRS is generated. In another implementation, the device includes a communication unit configured to send the first configuration information, which configures a repetition factor of the SRS in the time domain, wherein the repetition factor is a positive integer greater than or equal to 1. The repetition factor is used to determine a TD-OCC sequence matching the repetition factor, wherein the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor. The TD-OCC sequence is used to generate the SRS.

[0021] Fourthly, this application provides a communication device including a processor, a memory, and a computer program or instructions stored in the memory, characterized in that the processor executes the computer program or instructions to implement the method as described in the first aspect and any possible implementation thereof, or the method as described in the second aspect and any possible implementation thereof.

[0022] Fifthly, this application provides a chip. In one implementation, the chip is configured to receive first configuration information, which configures the repetition factor of the SRS in the time domain, wherein the repetition factor is a positive integer greater than or equal to 1; a processing unit is configured to determine a TD-OCC sequence matching the repetition factor, wherein the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor; and to generate the SRS based on the TD-OCC sequence. In another implementation, the chip is configured to send the first configuration information, which configures the repetition factor of the SRS in the time domain, wherein the repetition factor is a positive integer greater than or equal to 1; the repetition factor is used to determine a TD-OCC sequence matching the repetition factor, wherein the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor, and the TD-OCC sequence is used to generate the SRS.

[0023] In a sixth aspect, this application provides a computer-readable storage medium storing computer-readable instructions that, when executed on a computer, cause the communication device to perform the methods of the first aspect and any possible implementation thereof, or the methods of the second aspect and any possible implementation thereof.

[0024] In a seventh aspect, this application provides a computer program or computer program product, including code or instructions that, when executed on a computer, cause the computer to perform the method as described in the first aspect and any possible implementation thereof, or the method as described in the second aspect and any possible implementation thereof.

[0025] Eighthly, this application provides a chip module, which includes a communication module, a power module, a storage module, and a chip, wherein: the power module is used to provide electrical energy to the chip module; the storage module is used to store data and instructions; the communication module is used for internal communication within the chip module, or for communication between the chip module and external devices; and the chip is used to execute the method as described in the first aspect and any possible implementation thereof, or the method as described in the second aspect and any possible implementation thereof. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the system architecture of a communication system applying this application;

[0027] Figure 2 This is an example diagram of OCC sequences used to generate CSI-RS;

[0028] Figure 3 This is a flowchart illustrating an SRS generation method provided in this application;

[0029] Figure 4 This is a schematic diagram of the structure of a communication device provided in this application;

[0030] Figure 5 This is a schematic diagram of another communication device provided in this application;

[0031] Figure 6 This is a schematic diagram of the structure of a chip module provided in an embodiment of this application. Detailed Implementation

[0032] In this application, the terms "first," "second," etc., are used to distinguish identical or similar items with essentially the same function and purpose. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, nor do they imply that they must be different. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0033] It should be understood that in this application, "at least one" refers to one or more; "multiple" refers to two or more. Furthermore, the word "equal to" in this application can be used in conjunction with "greater than" or "less than". When "equal to" and "greater than" are used together, the technical solution using "greater than" is adopted; when "equal to" and "less than" are used together, the technical solution using "less than" is adopted.

[0034] First, the system architecture involved in this application will be described.

[0035] This application can be applied to fifth-generation (5G) systems, also known as new radio (NR) systems; or to sixth-generation (6G) systems, or seventh-generation (7G) systems, or other future communication systems; or it can also be used for device-to-device (D2D) systems, machine-to-machine (M2M) systems, vehicle-to-everything (V2X) systems, etc.

[0036] This application can be applied to Figure 1 In the system architecture shown. Figure 1 The communication system 10 shown may include, but is not limited to, network equipment 110 and terminal equipment 120. Figure 1 The number and form of the devices are used for illustration and do not constitute a limitation on the embodiments of this application. For example, in actual applications, multiple terminal devices may be included.

[0037] Terminal devices, also known as UEs, mobile stations (MS), and mobile terminals (MTs), are devices that provide voice and / or data connectivity to users. Examples include handheld devices and in-vehicle devices with wireless connectivity. Currently, some examples of terminal devices include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes.

[0038] In this application, the apparatus for implementing the functions of a terminal device can be the terminal device itself; it can also be an apparatus capable of supporting the terminal device in implementing the functions, such as a chip or chip module, which can be installed in the terminal device or used in conjunction with the terminal device. In the technical solution provided in this application, the example of the terminal device being used to implement the functions of the terminal device is described.

[0039] Network equipment, also known as access network equipment, refers to radio access network (RAN) nodes (or devices) that connect terminal devices to a wireless network; it can also be called a base station. Examples of RAN nodes include: evolved Node B (gNB), transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), and wireless fidelity (Wi-Fi) access point (AP). Furthermore, in a network architecture, network equipment can include centralized unit (CU) nodes, distributed unit (DU) nodes, or RAN equipment including both CU and DU nodes. It should be noted that centralized unit nodes and distributed unit nodes may also use other names, and this application does not limit them.

[0040] In this application, the apparatus for implementing the functions of a network device can be a network device itself; it can also be an apparatus capable of supporting the network device in implementing those functions, such as a chip or chip module. This apparatus can be installed in or used in conjunction with the network device. In the technical solutions provided in this application, the example of a network device being used to implement the functions of a network device is used to describe the technical solutions provided in this application.

[0041] It is understood that the communication system described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and does not constitute a limitation on the technical solutions provided in the embodiments of this application. Those skilled in the art will know that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0042] Secondly, the relevant names or terms involved in this application are explained in order to facilitate understanding by those skilled in the art.

[0043] 1. Repeating factor

[0044] In this application, the repetition factor (R) is used to describe the transmission unit of SRS time-domain symbols, that is, how many SRS symbols are used as the transmission unit in the time domain. For example, a repetition factor of 4 indicates that 4 SRS symbols are used as the transmission unit. As another example, a repetition factor of 2 indicates that 2 SRS symbols are used as the transmission unit. The repetition factor can be understood as a symbol-level repetition parameter. It should be noted that the name "repetition factor" is used as an example; other names used to describe the essence of the repetition factor can be replaced with "repetition factor".

[0045] The repetition factor is typically configured along with the time-domain symbol count of an SRS resource, which represents the number of symbols occupied by an SRS resource in the time domain. The repetition factor and the time-domain symbol count of the SRS resource can be configured by the higher-level parameter `resourceMapping`. For example, the configuration of the higher-level parameter `resourceMapping` may include:

[0046]

[0047] The number of time-domain symbols in an SRS resource can be represented as N_symbol, and the repetition factor can be represented as R. For example, R17 supports (N_symbol, R) = {(8,1), (8,2), (8,4), (8,8), (12,1), (12,2), (12,4), (12,6), (12,12), (10,1), (10,2), (10,5), (10,10), (14,1), (14,2), (14,7), (14,14)}.

[0048] For example, (N_symbol, R) = (8, 2), where 8 represents that an SRS resource occupies 8 symbols in the time domain; 2 represents that every 2 symbols are transmitted as a whole, for example, every 2 symbols are frequency hopping as a whole; then these 8 symbols can be divided into 2 symbols * 4, that is, 4 transmissions, each transmission is used to transmit 2 symbols. Each of these 8 symbols carries the same SRS information.

[0049] For example, (N_symbol, R) = (12, 1), where 12 indicates that an SRS resource occupies 12 symbols in the time domain; 1 indicates that each symbol is transmitted as a whole, for example, each symbol is frequency hopping as a whole; then these 12 symbols can be divided into 1 symbol * 12, that is, 12 transmissions, each transmission is used to transmit 1 symbol. Each of these 12 symbols carries the same SRS information.

[0050] Currently, the range of time-domain symbol count for SRS resources can be {1, 2, 4, 8, 10, 12, 14}, and the range of R can be {1, 2, 4, 5, 6, 7, 8, 10, 12, 14}. It should be noted that the symbols involved in this application can be orthogonal frequency division multiplexing (OFDM) symbols, discrete Fourier transform-spread OFDM symbols, or other symbols; this application does not impose any limitations.

[0051] 2. TD-OCC sequence

[0052] A TD-OCC sequence refers to an OCC sequence in the time domain. A TD-OCC sequence can also be described as a time-domain OCC sequence.

[0053] In one implementation, the TD-OCC sequence can be used to generate the physical uplink control channel (PUCCH).

[0054] For example, for PUCCH format 2, the TD-OCC sequence used to generate PUCCH can be shown in Table 1 or Table 2 below.

[0055] Table 1: At that time, for the orthogonal sequence w of PUCCH format2 n (i)

[0056] 0 [+1 +1] 1 [+1 -1]

[0057] Table 2: At that time, for the orthogonal sequence w of PUCCH format2 n (i)

[0058] 0 [+1 +1 +1 +1] 1 [+1 -1 +1 -1] 2 [+1 +1 -1 -1] 3 [+1 -1 -1 +1]

[0059] Where n represents the orthogonal sequence index, w n (i) represents the TD-OCC sequence corresponding to the orthogonal sequence index, where i represents the i-th element in the orthogonal sequence index. This indicates that PUCCH format2 occupies 2 symbols in a subframe (SF), and its corresponding TD-OCC sequence can be [+1 +1] or [+1 -1]. This indicates that PUCCHformat2 occupies 4 symbols in a subframe SF, and its corresponding TD-OCC sequence can be [+1 +1 +1 +1] or [+1 -1 +1 -1] or [+1 +1 -1 -1] or [+1 -1 -1 +1].

[0060] For example, for PUCCH format4 and interleaved PUCCH format3, the TD-OCC sequence used to generate PUCCH can be shown in Table 3 or Table 4 below.

[0061] Table 3: At that time, for the orthogonal sequence w of PUCCH format4 and PUCCH format3 with interleaving mapping n (i)

[0062] 0 [+1 +1] 1 [+1 -1]

[0063] Table 4: At that time, for the orthogonal sequence w of PUCCH format4 and PUCCH format3 with interleaving mapping n (i)

[0064] 0 [+1 +1 +1 +1] 1 [+1 -j +1 +j] 2 [+1 -1 +1 -1] 3 [+1 +j -1 -j]

[0065] in, The PUCCH format4 or PUCCH format3 with interleaving mapping occupies 2 symbols in one SF, and its corresponding TD-OCC sequence can be [+1 +1] or [+1 -1]. PUCCH format4 or PUCCH format3 of interleaved mapping occupies 4 symbols in a subframe SF, and its corresponding TD-OCC sequence can be [+1 +1 +1 +1] or [+1 -j +1 +j] or [+1 -1 +1 -1] or [+1 +j -1 -j].

[0066] In another implementation, the TD-OCC sequence can be used to generate the physical uplink shared channel (PUSCH) modulation and demodulation reference signal (DM-RS). For example, the TD-OCC sequence used to generate the PUSCH DM-RS is shown in Table 5 below.

[0067] Table 5: Parameters for PUSCH DM-RS Type 1

[0068]

[0069] Among them, w f (k') represents the frequency domain OCC sequence, w t (l') represents the TD-OCC sequence. CDM stands for code division multiplexing, and the index of a CDM group is represented by λ.

[0070] In another implementation, the TD-OCC sequence can be used to generate the Physical Downlink Shared Channel (PDSCH) DM-RS. For example, the TD-OCC sequence used to generate the PDSCH DM-RS is shown in Table 6 below.

[0071] Table 6: Parameters for PDSCH DM-RS Type 1

[0072]

[0073] Among them, w f (k') represents the frequency domain OCC sequence, w t (l') represents the TD-OCC sequence.

[0074] In another implementation, the TD-OCC sequence can be used for the channel state information-reference signal (CSI-RS). For example, for CDM type CDM4(FD2,TD2), the TD-OCC sequence used to generate CSI-RS is shown in Table 7 below; for CDM type CDM8(FD2,TD4), the TD-OCC sequence used to generate CSI-RS is shown in Table 8 below.

[0075] Table 7: Frequency domain sequence w of CDM4(FD2,TD2) f (k') and time-domain sequence w t (l')

[0076] 0 [+1 +1] [+1 +1] 1 [+1 -1] [+1 +1] 2 [+1 +1] [+1 -1] 3 [+1 -1] [+1 -1]

[0077] Table 8: Frequency domain sequence w of CDM4(FD2,TD4) f (k') and time-domain sequence w t (l')

[0078] 0 [+1 +1] [+1 +1 +1 +1] 1 [+1 -1] [+1 +1 +1 +1] 2 [+1 +1] [+1 -1 +1 -1] 3 [+1 -1] [+1 -1 +1 -1] 4 [+1 +1] [+1 +1 -1 -1] 5 [+1 -1] [+1 +1 -1 -1] 6 [+1 +1] [+1 -1 -1 -1] 7 [+1 -1] [+1 -1 -1 -1]

[0079] For example, see Figure 2 The diagram shows an example of an OCC sequence used to generate CSI-RS. Figure 2Taking CDM4 (FD2, TD2) as an example, it occupies 2 resource elements (REs) in the frequency domain and 2 symbols in the time domain. Antenna ports 3000 to 3003 occupy the same time-frequency resources. The CSI-RS transmitted on these four antenna ports are multiplied by different OCC sequences to achieve orthogonality between CSI-RS, enabling the transmission of four CSI-RS on the same time-frequency resource. The base sequences of these four CSI-RS can be the same or different. Using different OCC sequences to generate different CSI-RS on the same time-frequency resource can improve system capacity. It should be noted that... Figure 2 The OCC sequence in the data consists of a frequency domain OCC sequence and a time-frequency OCC sequence.

[0080] To reduce interference between SRSs, their orthogonality can be improved. Improving the orthogonality of SRSs can be achieved by generating SRSs using TD-OCC sequences. Therefore, this application provides an SRS generation method and apparatus that can reduce interference between SRSs, thereby facilitating channel estimation by network devices.

[0081] The SRS generation method provided in this application is described below.

[0082] Please see Figure 3 This is a flowchart illustrating the SRS generation method provided in this application. The process specifically includes the following steps:

[0083] S301, the network device sends the first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device.

[0084] The first configuration information is used to configure the repetition factor of the SRS in the time domain. The repetition factor is a positive integer greater than or equal to 1. This application can be adapted to cases where the repetition factor is greater than 1. The repetition factor is one of a preset set of values. The preset value range can be predefined by the protocol. For example, the preset value set {1,2,4,5,6,7,8,10,12,14} may change as the standard evolves (e.g., adding or removing some values). For ease of description, the repetition factor will be abbreviated as R below.

[0085] Optionally, the first configuration information may also include TD-OCC information used by the SRS resource. The TD-OCC information may include one or more TD-OCC sequence index numbers, or it may be used to configure the length information of the TD-OCC sequence, or it may be used to configure the generation information of the TD-OCC sequence.

[0086] Optionally, the first configuration information may also include activation and / or deactivation indication information for the SRS TD-OCC function. When the SRS TD-OCC function is activated, R can simultaneously be associated with TD-OCC information. That is, while configuring R, the first configuration information can also implicitly locate the TD-OCC information associated with R. The TD-OCC information may contain one or more OCC sequence index numbers, or it may be used to configure the length information of the TD-OCC sequence, or it may be used to configure the generation information of the TD-OCC sequence. The terminal device may also report to the network device whether it supports the SRS TD-OCC capability. If the terminal device supports the SRS TD-OCC capability, it indicates that the terminal device can generate and / or use the SRS TD-OCC sequence, and the first configuration information may include or implicitly indicate the TD-OCC information. If the terminal device does not support the TD-OCC capability of SRS, it means that the terminal device cannot generate and / or use the TD-OCC sequence of SRS. Therefore, the first configuration information does not contain or implicitly indicate the TD-OCC information.

[0087] Optionally, the first configuration information may also include indication information to instruct the terminal device to activate or deactivate the first capability. The first capability refers to the simultaneous use of TD-OCC sequences of different sequence lengths within a single SRS resource. In other words, the first capability refers to the simultaneous use of TD-OCC sequences of different sequence lengths within a single SRS resource. The terminal device may also report to the network device whether it supports the first capability.

[0088] The first configuration information can be radio resource control (RRC) signaling.

[0089] S302, the terminal device determines a TD-OCC sequence that matches the repeat factor, wherein the sequence length of the TD-OCC sequence is less than or equal to the value of the repeat factor.

[0090] The terminal device can use method 1, method 2 or method 3 to determine the TD-OCC sequence that matches R, where the sequence length of the TD-OCC sequence is less than or equal to the value of R.

[0091] The SRS symbols mentioned in this application refer to symbols used for transmitting SRS, and the symbols may be OFDM symbols, DFT-s-OFDM symbols, or other symbols, which are not limited in this application.

[0092] Method 1: The terminal device generates a TD-OCC sequence that matches R based on the first TD-OCC sequence and / or the second TD-OCC sequence.

[0093] In this application, the sequence length of the first TD-OCC sequence is a first threshold, and the sequence length of the second TD-OCC sequence is a second threshold, with the first threshold being less than the second threshold. For example, the first threshold is 2, and the second threshold is 4. As shown in Tables 1 to 8 above, the sequence length of the TD-OCC sequence is typically 2 or 4. This application uses a first TD-OCC sequence with a sequence length of 2 and a second TD-OCC sequence with a sequence length of 4 as an example, i.e., using a first threshold of 2 and a second threshold of 4 as an example.

[0094] Optionally, for cases where R is an even number, the sequence length of the TD-OCC sequence matching R is equal to the value of R. For example, if R = 6, the TD-OCC sequence matching R consists of a first TD-OCC sequence and a second TD-OCC sequence. For cases where R is an odd number, the sequence length of the TD-OCC sequence matching R is less than the value of R. For example, if R = 5, the TD-OCC sequence matching R consists of a second TD-OCC sequence.

[0095] Optionally, the sequence length of a TD-OCC sequence matching R can be divisible by 2 and / or 4, and the sequence length of a TD-OCC sequence matching R is equal to the value of R. For example, if R = 6, which is divisible by 2, the TD-OCC sequence matching R consists of a first TD-OCC sequence and a second TD-OCC sequence. Alternatively, the sequence length of a TD-OCC sequence matching R cannot be divisible by 2 and / or 4, and the sequence length of a TD-OCC sequence matching R is less than the value of R. For example, if R = 7, which is not divisible by 2 and / or 4, the TD-OCC sequence matching R consists of a first TD-OCC sequence and a second TD-OCC sequence.

[0096] Optionally, taking a TD-OCC sequence with a length of 2 that matches R=7 as an example, 7 divided by 2 leaves a remainder of 1. In this case, the TD-OCC sequence matching R consists of three TD-OCC sequences with a length of 2. These three TD-OCC sequences with a length of 2 can be the same TD-OCC sequence. Of the seven SRS symbols in R=7, one SRS symbol is not multiplied by the TD-OCC sequence, while three groups of two SRS symbols are multiplied by the TD-OCC sequence with a length of 2. Optionally, this one SRS symbol can be either the last SRS symbol in time or the first SRS symbol in time among the seven SRS symbols.

[0097] Optionally, taking a TD-OCC sequence with a length of 4 that matches R=7 as an example, 7 divided by 4 leaves a remainder of 3. In this case, the TD-OCC sequence matching R is a single TD-OCC sequence with a length of 4. This means that among the 7 SRS symbols corresponding to R=7, 3 SRS symbols are not multiplied by the TD-OCC sequence, while 4 SRS symbols are multiplied by the TD-OCC sequence with a length of 4. Optionally, the 3 SRS symbols can be either the last three SRS symbols in time or the first three SRS symbols in time.

[0098] Optionally, taking the TD-OCC sequence lengths of 4 and 2 that match R=7 as examples, 7 divided by 4 leaves a remainder of 3, and 3 divided by 2 leaves a remainder of 1. In this case, the TD-OCC sequence matching R consists of one TD-OCC sequence of length 4 and one TD-OCC sequence of length 2. This means that among the 7 SRS symbols corresponding to R=7, one SRS symbol is not multiplied by the TD-OCC sequence, while 4 SRS symbols are multiplied by the TD-OCC sequence of length 4 and 2 SRS symbols are multiplied by the TD-OCC sequence of length 2. Optionally, the 1 SRS symbol can be the last SRS symbol in time among the 7 SRS symbols or the first SRS symbol in time among the 7 SRS symbols.

[0099] Optionally, the formula can be used to describe this: when the length of the TD-OCC sequence matching R is M, the quotient of R divided by M is denoted as X, and the remainder is denoted as Y. This means that among the R SRS symbols, there are X groups of M SRS symbols, each multiplied by or associated with a TD-OCC sequence of length M, and Y SRS symbols that do not require TD-OCC operation. In this formula, the TD-OCC sequences used by the X groups of M SRS symbols can be the same. Optionally, the Y SRS symbols can be the last Y SRS symbols in time from the R SRS symbols or the first Y SRS symbols in time from the R SRS symbols.

[0100] Optionally, the formula can be used to describe the situation where, when the sequence lengths of the TD-OCC sequences matching R are M and N (M>N), the quotient of R divided by M is denoted as X1, and the remainder as Y1. The quotient of Y1 divided by N is denoted as X3, and the remainder as Y2. This means that among the R SRS symbols, there is one X1 group of M SRS symbols, each multiplied by or associated with a TD-OCC sequence of length M, and another X3 group of N SRS symbols, each multiplied by or associated with a TD-OCC sequence of length N. Optionally, there may also be Y2 SRS symbols that are not multiplied by a TD-OCC sequence. The TD-OCC sequences used in the X1 group of M SRS symbols can be the same, and / or the TD-OCC sequences used in the X3 group of N SRS symbols can also be the same. Optionally, the Y2 SRS symbols can be the last Y2 SRS symbols in time among the R SRS symbols or the first Y2 SRS symbols in time among the R SRS symbols. In terms of timing, the M SRS symbols in group X1 can be before or after the N SRS symbols in group X3.

[0101] For example, based on method 1, taking the preset value set of R {1,2,4,5,6,7,8,10,12,14} as an example, the TD-OCC sequence matching R is introduced.

[0102] For R = 2:

[0103] The TD-OCC sequence matching R can be a first TD-OCC sequence. The first TD-OCC sequence in this application can be, but is not limited to: a TD-OCC sequence of length 2 used to generate PUCCH, a TD-OCC sequence of length 2 used to generate DM-RS (PUSCH DM-RS or PDSCH DM-RS), a TD-OCC sequence of length 2 used to generate CSI-RS, or other TD-OCC sequences of length 2. For example, the terminal device may choose to... The orthogonal sequence w used to generate PUCCH n (i) as the first TD-OCC sequence; or choose to use The orthogonal sequence w used to generate PUCCH n (i) as the first TD-OCC sequence; or select the w to be used to generate PUSCH DM-RS. t (l') as the first TD-OCC sequence; or select [w] to be used to generate CSI-RS. t (0) w t (1)] is the first TD-OCC sequence. For example, the terminal device can select [+1 +1] or [+1 -1], which can be predefined by the protocol or configured by the base station through higher-layer signaling.

[0104] For R=4:

[0105] (1) The TD-OCC sequence matching R can be a second TD-OCC sequence. The second TD-OCC sequence in this application can be, but is not limited to: a TD-OCC sequence of length 4 used to generate PUCCH, a TD-OCC sequence of length 4 used to generate DM-RS (PUSCHDM-RS or PDSCHDM-RS), a TD-OCC sequence of length 4 used to generate CSI-RS, or other TD-OCC sequences of length 4. For example, the terminal device can select any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)] ​​is the second TD-OCC sequence.

[0106] (2) The TD-OCC sequence matched with R can also be a combination of two first TD-OCC sequences. These two first TD-OCC sequences can be the same (e.g., to increase the gain) or different. For example, one is [+1 +1] and the other is [+1 -1]; or both are [+1 -1]; or both are [+1 +1].

[0107] For R=5:

[0108] (1) The TD-OCC sequence matching R can be a second TD-OCC sequence, which can be any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)]. Optionally, if R is not divisible by the second TD-OCC sequence, the SRS symbol corresponding to the remainder can be the last or first SRS symbol in time corresponding to R, and the SRS symbol corresponding to the remainder may not use the TD-OCC operation.

[0109] (2) The TD-OCC sequence matched with R can also be a combination of two first TD-OCC sequences. These two first TD-OCC sequences can be the same (e.g., to increase gain) or different. For example, one is [+1 +1] and the other is [+1 -1]; or both are [+1 -1]; or both are [+1 +1]. Optionally, if R is not divisible by the second TD-OCC sequence, the SRS symbol corresponding to the remainder can be the last or first SRS symbol in time corresponding to R, and the SRS symbol corresponding to the remainder may not use TD-OCC operation.

[0110] For R=6:

[0111] (1) The TD-OCC sequence matching R can be a combination of one first TD-OCC sequence and one second TD-OCC sequence, that is, one first TD-OCC sequence first, and one second TD-OCC sequence after the first TD-OCC sequence. The first TD-OCC sequence can be, for example, [+1 +1] or [+1 -1], and the second TD-OCC sequence can be, for example, any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)]. For example, if the first TD-OCC sequence is [+1 +1] and the second TD-OCC sequence is [+1 +1 -1 -1], then the TD-OCC sequence matching R is [+1 +1 +1 +1 -1 -1]. In terms of time, the SRS symbol corresponding to the second TD-OCC sequence can be first, followed by the SRS symbol corresponding to the first TD-OCC sequence; or the SRS symbol corresponding to the first TD-OCC sequence can be first, followed by the SRS symbol corresponding to the second TD-OCC sequence.

[0112] (2) The TD-OCC sequence matched with R can also be a combination of three first TD-OCC sequences. These three first TD-OCC sequences can be all the same (e.g., to increase the gain) or partially different (e.g., the first two first TD-OCC sequences are the same) or all two adjacent sequences are different. For example, the first one is [+1 +1], the second one is [+1 -1], and the third one is [+1 +1]; or all three are [+1 -1]; or all three are [+1 +1]; or the first one is [+1 +1], the second one is [+1 +1], and the third one is [+1 -1]; and so on.

[0113] For R=7:

[0114] (1) The TD-OCC sequence matching R can be a combination of one first TD-OCC sequence and one second TD-OCC sequence. The first TD-OCC sequence can be, for example, [+1 +1] or [+1 -1], and the second TD-OCC sequence can be, for example, any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)]. For example, if the first TD-OCC sequence is [+1 +1] and the second TD-OCC sequence is [+1 +1 -1 -1], then the TD-OCC sequence matching R is [+1 +1 +1 +1 -1 -1]. In terms of time, the SRS symbol corresponding to the second TD-OCC sequence can be first, followed by the SRS symbol corresponding to the first TD-OCC sequence; or the SRS symbol corresponding to the first TD-OCC sequence can be first, followed by the SRS symbol corresponding to the second TD-OCC sequence.

[0115] (2) The TD-OCC sequence matched with R can also be a combination of three first TD-OCC sequences. These three first TD-OCC sequences can be all the same (e.g., to increase the gain) or partially different (e.g., the first two first TD-OCC sequences are the same) or all two adjacent sequences are different. For example, the first one is [+1 +1], the second one is [+1 -1], and the third one is [+1 +1]; or all three are [+1 -1]; or all three are [+1 +1]; or the first one is [+1 +1], the second one is [+1 +1], and the third one is [+1 -1]; and so on.

[0116] For R=8:

[0117] (1) The TD-OCC sequence matched with R can also be a combination of four first TD-OCC sequences. These four first TD-OCC sequences can be all the same (e.g., to increase the gain) or partially different (e.g., the first two first TD-OCC sequences are the same) or the two adjacent sequences are all different. For example, all four are [+1 +1]; or all four are [+1 -1]; etc.

[0118] (2) The TD-OCC sequence matched with R can also be a combination of two second TD-OCC sequences, which can be the same (e.g., to increase gain) or different. The second TD-OCC sequence can be, for example, any one of the w sequences in Table 2. n(i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)].

[0119] (3) The TD-OCC sequence matching R can be a combination of two first TD-OCC sequences and one second TD-OCC sequence. These two first TD-OCC sequences can be the same or different. For example, the first TD-OCC sequence can be [+1 +1] or [+1 -1], and the second TD-OCC sequence can be any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)]. In terms of time, the SRS symbol corresponding to the second TD-OCC sequence may be first, followed by the SRS symbols corresponding to the two first TD-OCC sequences; or the SRS symbols corresponding to the two first TD-OCC sequences may be first, followed by the SRS symbol corresponding to the second TD-OCC sequence; or the SRS symbol corresponding to one first TD-OCC sequence may be first, followed by the SRS symbol corresponding to the second TD-OCC sequence, and followed by the SRS symbol corresponding to another first TD-OCC sequence.

[0120] For R = 10:

[0121] (1) The TD-OCC sequence that matches R can also be a combination of 5 first TD-OCC sequences. These 5 first TD-OCC sequences can be all the same or partially different (e.g., the first 2 first TD-OCC sequences are the same) or the two adjacent sequences are all different.

[0122] (2) The TD-OCC sequence matching R can also be a combination of 3 first TD-OCC sequences + 1 second TD-OCC sequence. These 3 first TD-OCC sequences can be all the same or partially different (e.g., the first 2 first TD-OCC sequences are the same) or the two adjacent sequences are all different. In terms of time, the SRS symbols corresponding to the second TD-OCC sequence can be first, followed by the SRS symbols corresponding to the 3 first TD-OCC sequences; or the SRS symbols corresponding to the 3 first TD-OCC sequences can be first, followed by the SRS symbols corresponding to the second TD-OCC sequence; or the SRS symbols corresponding to the 2 first TD-OCC sequences can be first, followed by the SRS symbols corresponding to the second TD-OCC sequence, and followed by the SRS symbols corresponding to the other first TD-OCC sequence; or the SRS symbols corresponding to the 1 first TD-OCC sequence can be first, followed by the SRS symbols corresponding to the second TD-OCC sequence, and followed by the SRS symbols corresponding to the other 2 first TD-OCC sequences.

[0123] (3) The TD-OCC sequence matching R can also be a combination of one first TD-OCC sequence and two second TD-OCC sequences, which can be the same or different. In terms of time, the SRS symbols corresponding to the two second TD-OCC sequences can be first, followed by the SRS symbol corresponding to the first TD-OCC sequence; or the SRS symbols corresponding to the first TD-OCC sequence can be first, followed by the SRS symbols corresponding to the two second TD-OCC sequences; or the SRS symbol corresponding to one second TD-OCC sequence can be first, the SRS symbol corresponding to the first TD-OCC sequence can be in the middle, and the SRS symbol corresponding to the other second TD-OCC sequence can be last.

[0124] For R = 12:

[0125] (1) The TD-OCC sequence that matches R can also be a combination of 6 first TD-OCC sequences. These 6 first TD-OCC sequences can be all the same or partially different (e.g., the first 2 first TD-OCC sequences are the same) or the two adjacent sequences are all different.

[0126] (2) The TD-OCC sequence that matches R can also be a combination of three second TD-OCC sequences. These three second TD-OCC sequences can be all the same or partially different (e.g., the first two second TD-OCC sequences are the same) or the two adjacent sequences are all different.

[0127] (3) The TD-OCC sequence matching R can also be a combination of two second TD-OCC sequences and two first TD-OCC sequences. The two second TD-OCC sequences can be the same or different, and the two first TD-OCC sequences can be the same or different. In terms of time, the SRS symbols corresponding to the two second TD-OCC sequences can be first, followed by the SRS symbols corresponding to the two first TD-OCC sequences; or the SRS symbols corresponding to the two first TD-OCC sequences can be first, followed by the SRS symbols corresponding to the two second TD-OCC sequences; or the SRS symbols corresponding to one first TD-OCC sequence can be first, the SRS symbols corresponding to two second TD-OCC sequences can be in the middle, and the SRS symbol corresponding to another first TD-OCC sequence can be last; or the SRS symbols corresponding to one second TD-OCC sequence can be first, the SRS symbols corresponding to two first TD-OCC sequences can be in the middle, and the SRS symbol corresponding to another second TD-OCC sequence can be last.

[0128] For R=14:

[0129] (1) The TD-OCC sequence that matches R can also be a combination of 7 first TD-OCC sequences. These 7 first TD-OCC sequences can be all the same or partially different (e.g., the first 2 first TD-OCC sequences are the same) or the two adjacent sequences are all different.

[0130] (2) The TD-OCC sequence that matches R can also be a combination of 2 second TD-OCC sequences + 3 first TD-OCC sequences. The 2 second TD-OCC sequences can be the same or different. The 3 first TD-OCC sequences can be completely the same or partially the same (e.g., the first 2 second TD-OCC sequences are the same) or the two adjacent sequences are different. In terms of time, the order could be: two SRS symbols corresponding to the second TD-OCC sequence first, followed by three SRS symbols corresponding to the first TD-OCC sequence; or three SRS symbols corresponding to the first TD-OCC sequence first, followed by two SRS symbols corresponding to the second TD-OCC sequence; or one SRS symbol corresponding to the second TD-OCC sequence first, three SRS symbols corresponding to the second TD-OCC sequence in the middle, and another SRS symbol corresponding to the second TD-OCC sequence in the middle; or one SRS symbol corresponding to the first TD-OCC sequence first, two SRS symbols corresponding to the second TD-OCC sequence in the middle, and another two SRS symbols corresponding to the first TD-OCC sequence in the middle; or two SRS symbols corresponding to the first TD-OCC sequence first, two SRS symbols corresponding to the second TD-OCC sequence in the middle, and another SRS symbol corresponding to the first TD-OCC sequence in the middle; and so on.

[0131] (3) The TD-OCC sequence matching R can also be a combination of one second TD-OCC sequence and five first TD-OCC sequences (for example, the second TD-OCC sequence can be placed first, last, or in the middle). These five first TD-OCC sequences can be completely identical or partially identical (for example, the first two second TD-OCC sequences are identical) or two adjacent sequences are all different. In terms of time, the SRS symbol corresponding to one second TD-OCC sequence can be first, followed by the SRS symbols corresponding to the five first TD-OCC sequences; or the SRS symbols corresponding to the five first TD-OCC sequences can be first, followed by the SRS symbol corresponding to one second TD-OCC sequence; and so on.

[0132] (4) The TD-OCC sequence matching R can also be a combination of three second TD-OCC sequences and one first TD-OCC sequence (for example, the first TD-OCC sequence can be placed first, last, or in the middle). The three second TD-OCC sequences can be completely identical or partially identical (for example, the first two second TD-OCC sequences are identical) or the two adjacent sequences are all different. In terms of time, the SRS symbol corresponding to the first TD-OCC sequence can be first, followed by the SRS symbol corresponding to the three second TD-OCC sequences; or the SRS symbol corresponding to the three second TD-OCC sequences can be first, followed by the SRS symbol corresponding to the first TD-OCC sequence; and so on.

[0133] Furthermore, for method 1 above, the network device can also send a first modification command to the terminal device, and correspondingly, the terminal device receives the first modification command from the network device. The first modification command is used to instruct the modification of the first TD-OCC sequence and / or the second TD-OCC sequence matching R. For example, if R = 6, the TD-OCC sequence matching R is [+1 +1 +1 +1 -1 -1], composed of the first TD-OCC sequence [+1 +1] + the second TD-OCC sequence [+1 +1 -1 -1]. The first modification command can instruct the modification of the first TD-OCC sequence to [+1 -1], thus the newly formed TD-OCC sequence matching R is [+1 -1 +1 +1 -1 -1]. The first modification command can be, for example, a medium access control-control element (MAC-CE) or downlink control information (DCI). Modifying the first TD-OCC sequence and / or the second TD-OCC sequence through the first modification command helps improve the flexibility of the generated SRS.

[0134] Method 2: The terminal device generates a TD-OCC sequence that matches R based on the second configuration information.

[0135] The second configuration information can be sent from the network device to the terminal device, and the terminal device receives the second configuration information from the network device. The second configuration information can be RRC signaling. The second configuration information is used to configure one or more reference TD-OCC sequences. The terminal device generates a TD-OCC sequence matching R based on the configured one or more reference TD-OCC sequences. The specific number of reference TD-OCC sequences can be related to the value of R. The second configuration information can apply to every R consecutive SRS symbols of an SRS resource, or to the entire SRS symbol set, or to all SRS resources in the SRS resource set, or to every R consecutive SRS symbols of all SRS resources in the SRS resource set.

[0136] For example, when R=4, the second configuration information is used to configure a reference TD-OCC sequence with a sequence length of 4. This reference TD-OCC sequence can be any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)], or other TD-OCC sequences with a sequence length of 4. For example, R=6, the second configuration information is used to configure one reference TD-OCC sequence [+1 +1] with a sequence length of 2 and one reference TD-OCC sequence [+1 +1 -1 -1] with a sequence length of 4. The second configuration information can also be used to configure the order of these two reference TD-OCC sequences (e.g., the reference TD-OCC sequence with a sequence length of 2 comes first).

[0137] Furthermore, for method 2 described above, the network device can also send a second modification command to the terminal device, and the terminal device receives the second modification command from the network device. The second modification command is used to instruct the modification of one or more of the aforementioned reference TD-OCC sequences. For example, if R = 6, and the second configuration information indicates two TD-OCC sequences, [+1 +1] and [+1 +1 -1 -1], the second modification command can instruct [+1 +1] to be modified to [+1 -1], so that the TD-OCC sequence matching R can be represented as [+1 -1 +1 +1 -1 -1]. The second modification command can be, for example, MAC-CE. Modifying the reference TD-OCC sequence indicated by the second configuration information using the second modification command helps improve flexibility.

[0138] Method 3: The terminal device generates a TD-OCC sequence that matches R based on the TD-OCC sequence predefined in the protocol. In other words, the protocol can predefine the TD-OCC sequence corresponding to each value of R.

[0139] For example, based on method 3, taking the preset value set of R {1,2,4,5,6,7,8,10,12,14} as an example, the TD-OCC sequence matching R is introduced.

[0140] For R=2: The TD-OCC sequence that matches R can be a TD-OCC sequence with a predefined sequence length of 2, such as [+1 +1] or [+1 -1], or other TD-OCC sequences with a sequence length of 2.

[0141] For R=4: The TD-OCC sequence matching R can be a TD-OCC sequence with a predefined sequence length of 4, for example, it can be any one of the w sequences in Table 2. n (i), or any of the w options in Table 4 n (i), or any of the options in Table 8 [w t (0) w t (1) w t (2) w t (3)], or it can be other TD-OCC sequences with a length of 4. It can also be a combination of two TD-OCC sequences with a length of 2 predefined by the protocol, and these two TD-OCC sequences with a length of 2 can be the same or different.

[0142] For R=5: The TD-OCC sequence that matches R can be a TD-OCC sequence with a predefined sequence length of 5; or it can be a TD-OCC sequence with a predefined sequence length of 4 (which is beneficial for expansion).

[0143] For R=6: the TD-OCC sequence matching R can be a TD-OCC sequence with a predefined sequence length of 6; it can also be a TD-OCC sequence with a predefined sequence length of 5 (which is beneficial for expansion); it can also be a combination of a TD-OCC sequence with a predefined sequence length of 4 and a TD-OCC sequence with a predefined sequence length of 2; or it can be a combination of three TD-OCC sequences with a predefined sequence length of 2.

[0144] For R=7: The TD-OCC sequence that matches R can be a TD-OCC sequence with a predefined sequence length of 7, or a TD-OCC sequence with a predefined sequence length of 6 (which is beneficial for expansion).

[0145] For R=8: The TD-OCC sequence matching R can be a TD-OCC sequence with a predefined sequence length of 8; it can also be a TD-OCC sequence with a predefined sequence length of 7 (which is beneficial for expansion); it can also be a combination of four TD-OCC sequences with a predefined sequence length of 2; it can also be a combination of two TD-OCC sequences with a sequence length of 4; or it can be a combination of one TD-OCC sequence with a sequence length of 4 and two TD-OCC sequences with a sequence length of 2.

[0146] For R=10: The TD-OCC sequence matching R can be a TD-OCC sequence with a predefined sequence length of 10; it can also be a combination of 5 TD-OCC sequences with a predefined sequence length of 2; it can also be a combination of 4 TD-OCC sequences with a sequence length of 2 and 1 TD-OCC sequence with a sequence length of 2; or it can be a combination of 3 TD-OCC sequences with a sequence length of 2 and 1 TD-OCC sequence with a sequence length of 4.

[0147] For R=12: The TD-OCC sequence matching R can be a TD-OCC sequence with a predefined sequence length of 12; it can also be a combination of 6 TD-OCC sequences with a predefined sequence length of 2; it can also be a combination of 2 TD-OCC sequences with a sequence length of 4 and 2 TD-OCC sequences with a sequence length of 2; or it can be a combination of 3 TD-OCC sequences with a sequence length of 4.

[0148] For R=14: The TD-OCC sequence matching R can be a TD-OCC sequence with a predefined sequence length of 14; it can also be a combination of 7 predefined TD-OCC sequences with a sequence length of 2; it can also be a combination of 2 TD-OCC sequences with a sequence length of 4 and 3 TD-OCC sequences with a sequence length of 2; it can also be a combination of 5 TD-OCC sequences with a sequence length of 2 and 1 TD-OCC sequence with a sequence length of 4; or it can also be a combination of 1 TD-OCC sequence with a sequence length of 2 and 3 TD-OCC sequences with a sequence length of 4.

[0149] Methods 1 to 3 described above can be executed individually or in combination, such as combining methods 2 and 3. The second configuration information is used to indicate at least one TD-OCC sequence among a plurality of predefined TD-OCC sequences. It should be noted that methods 1 to 3 described above are for illustrative purposes only and do not constitute a limitation of this application.

[0150] S303, the terminal device generates SRS based on this TD-OCC sequence.

[0151] Optionally, the terminal device generates the SRS based on the TD-OCC sequence and the SRS base sequence. For example, multiplying the TD-OCC sequence by the SRS base sequence yields the SRS sequence, and the SRS can be obtained from this SRS sequence. The SRS base sequence may or may not use R as the transmission unit. If R is used as the transmission unit, then the TD-OCC sequence and the SRS base sequence have the same sequence length. If R is not used as the transmission unit, then a base sequence corresponding to the TD-OCC sequence is selected from the SRS base sequence, and multiplying this base sequence by the TD-OCC sequence yields the SRS sequence. In other words, the generated SRS refers to an SRS with a transmission unit of R. For example, if R = 4, the generated SRS refers to an SRS with a transmission unit of 4 symbols in the time domain. As another example, if R = 6, the generated SRS refers to an SRS with a transmission unit of 6 symbols in the time domain.

[0152] For example, R=6. SRS1 is generated based on TD-OCC sequence 1, SRS2 is generated based on TD-OCC sequence 2, SRS3 is generated based on TD-OCC sequence 3, and SRS4 is generated based on TD-OCC sequence 4. The sequence length of these four TD-OCC sequences is 6, and these four SRSs occupy the same 6 symbols in the time domain. Because these four TD-OCC sequences are orthogonal, the interference between these four SRSs is small. Therefore, these 6 symbols can carry the SRSs of 4 terminal devices or the 4 SRSs of 1 terminal device, which helps to improve system capacity.

[0153] exist Figure 3In the illustrated embodiment, generating a TD-OCC sequence based on a repetition factor and then generating an SRS based on the TD-OCC sequence can reduce interference between SRSs, thereby benefiting network devices in channel estimation. Generating an SRS based on a TD-OCC sequence can also improve system capacity.

[0154] As an optional embodiment, if the network device may not configure TD-OCC sequences for certain Rs, or if the protocol does not predefine TD-OCC sequences for certain Rs, such as not configuring TD-OCC sequences for R=5 or R=7, then the method provided in this application cannot be applied, or a frequency hopping method can be used to reduce interference between SRSs. Alternatively, the frequency hopping method and the method provided in this application are mutually exclusive.

[0155] As an optional implementation, the generated SRS is an SRS with R as the transmission unit, and the SRS symbol corresponding to the TD-OCC sequence will not span two adjacent R SRS symbols. That is, the starting symbol of each R SRS symbol is the start of a new TD-OCC sequence. For example, (12,6), the starting symbol of every 6 SRS symbols is the start of a new TD-OCC sequence.

[0156] As an optional embodiment, if both the time-domain resources of the generated SRS and the time-domain resources of the physical uplink channel include the first time-domain resources, then the time-domain resources of the SRS are discarded and the physical uplink channel is transmitted on the time-domain resources of the physical uplink channel. The physical uplink channel can be a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH). Since both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources, it can be understood that the time-domain resources of the SRS and the time-domain resources of the physical uplink channel occupy the same time-domain resources, or that the SRS and the physical uplink channel collide in the time domain. Discarding the time-domain resources of the SRS can be understood as discarding the entire SRS resource, that is, not transmitting the SRS.

[0157] In another implementation, when both the time-domain resources for generating the SRS and the time-domain resources for the physical uplink channel include the first time-domain resource, the conflicting SRS TD-OCC sequences corresponding to the first time-domain resource are determined, and the SRS symbols corresponding to the conflicting SRS TD-OCC sequences are discarded. For example, if R = 6, the TD-OCC sequences matching R consist of a TD-OCC sequence with a sequence length of 2 and a TD-OCC sequence with a sequence length of 4. If the conflicting TD-OCC sequence corresponding to the first time-domain resource is a TD-OCC sequence with a sequence length of 2, then the SRS symbols corresponding to the TD-OCC sequence with a sequence length of 2 are discarded, and the SRS symbols corresponding to the TD-OCC sequence with a sequence length of 4 are retained, so that the SRS can still be transmitted. If the conflicting TD-OCC sequences corresponding to the first time-domain resource are these two TD-OCC sequences, then these two TD-OCC sequences can be discarded, and the SRS is either not transmitted or the transmitted SRS does not use TD-OCC sequences. For example, if the TD-OCC sequence matching R is a predefined TD-OCC sequence of length 6, and the conflicting TD-OCC sequence corresponding to the first time-domain resource is also a TD-OCC sequence of length 6, then this TD-OCC sequence of length 6 is discarded, and SRS is either not transmitted or the transmitted SRS does not use a TD-OCC sequence. This avoids time-domain conflicts. The time-domain resources of SRS and the time-domain resources of the physical uplink channel both include the first time-domain resource. This can be understood as the time-domain resources of SRS and the time-domain resources of the physical uplink channel occupying the same time-domain resources, or SRS and the physical uplink channel colliding in the time domain. Discarding the time-domain resources of SRS can be understood as discarding the entire SRS resource, that is, not transmitting SRS. The physical uplink channel can be the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH).

[0158] Please see Figure 4 , Figure 4 This is a schematic diagram of a communication device provided in an embodiment of this application. The communication device 40 can be a terminal device or a device compatible with a terminal device. Figure 4 As shown, the communication device 40 includes a processing unit 401 and a communication unit 402.

[0159] In one implementation, the communication unit 402 is used to receive first configuration information, which is used to configure the repetition factor of SRS in the time domain; the repetition factor is a positive integer greater than or equal to 1.

[0160] Processing unit 401 is used to determine the TD-OCC sequence that matches the repeat factor, wherein the sequence length of the TD-OCC sequence is less than or equal to the value of the repeat factor; and to generate SRS based on the TD-OCC sequence.

[0161] Optionally, the processing unit 401 is specifically used to generate a TD-OCC sequence that matches the repeat factor based on the first TD-OCC sequence and / or the second TD-OCC sequence; the sequence length of the first TD-OCC sequence is a first threshold, the sequence length of the second TD-OCC sequence is a second threshold, and the first threshold is less than the second threshold.

[0162] Optionally, the sequence length of the TD-OCC sequence can be divided by the first threshold and / or the second threshold, and the sequence length of the TD-OCC sequence is equal to the value of the repeat factor;

[0163] or,

[0164] The sequence length of the TD-OCC sequence cannot be divided by the first threshold and / or the second threshold, and the sequence length of the TD-OCC sequence is less than the value of the repeat factor.

[0165] Optionally, the communication unit 402 is also configured to receive a first modification signaling, which is used to indicate modification of a first TD-OCC sequence and / or a second TD-OCC sequence.

[0166] Optionally, the communication unit 402 is also configured to receive second configuration information, which is used to configure one or more reference TD-OCC sequences for the SRS;

[0167] Processing unit 401 is specifically used to generate a TD-OCC sequence that matches the repeat factor based on one or more reference TD-OCC sequences.

[0168] Optionally, the communication unit 402 is also configured to receive a second modification signaling, which indicates the modification of one or more reference TD-OCC sequences.

[0169] Optionally, both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources;

[0170] The processing unit 401 is also used to discard the time-frequency resources of the SRS; the communication unit 402 is also used to transmit the physical uplink channel on the time-domain resources of the physical uplink channel.

[0171] Optionally, both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources;

[0172] The processing unit 401 is specifically used to determine the conflicting SRS TD-OCC sequence corresponding to the first time-domain resource and discard the SRS symbol corresponding to the conflicting SRS TD-OCC.

[0173] Optionally, the repeating factor can be one of the preset value sets.

[0174] The communication device 40 can be a network device or a device compatible with a network device. For example... Figure 4 As shown, the communication device 40 includes a communication unit 402.

[0175] In one implementation, the communication unit 402 is used to send first configuration information, which is used to configure the repetition factor of the SRS in the time domain; the repetition factor is a positive integer greater than or equal to 1; the repetition factor is used to determine the TD-OCC sequence that matches the repetition factor, and the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor; the TD-OCC sequence is used to generate the SRS.

[0176] Please see Figure 5 , Figure 5 This is a schematic diagram of another communication device provided in an embodiment of this application. The communication device 50 can be a terminal device or a device compatible with a terminal device. The communication device 50 can be a network device or a device compatible with a network device. Optionally, the communication device may further include a memory 503. The transceiver 501, processor 502, and memory 503 can be connected via a bus 504 or other means. The bus is in... Figure 5 The connections between other components are shown in bold lines only and are not intended to be limiting. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0177] The coupling in this application embodiment is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. This application embodiment does not limit the specific connection medium between the transceiver 501, processor 502, and memory 503 described above.

[0178] Memory 503 may include read-only memory and random access memory, and provides instructions and data to processor 502. A portion of memory 503 may also include non-volatile random access memory.

[0179] Processor 502 can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor; optionally, processor 502 can also be any conventional processor.

[0180] In one optional implementation, memory 503 is used to store program instructions; processor 502 is used to call the program instructions stored in memory 503 for execution. Figure 3 The steps performed by the terminal device in the corresponding embodiment. In another optional embodiment, memory 503 is used to store program instructions; processor 502 is used to call the program instructions stored in memory 503 for execution. Figure 3 The steps performed by the network device in the corresponding embodiment.

[0181] In the embodiments of this application, the methods provided in the embodiments of this application can be implemented by running a computer program (including program code) capable of performing the steps involved in the above-described methods on a general-purpose computing device, such as a computer, which includes processing elements and storage elements such as a CPU, random access memory (RAM), and read-only memory (ROM). The computer program can be recorded on, for example, a computer-readable recording medium, loaded into the aforementioned computing device through the computer-readable recording medium, and run therein.

[0182] Based on the same inventive concept, the communication device 50 provided in the embodiments of this application solves the problem in the same way and with the same beneficial effects as this application. Figure 3 The principles and beneficial effects of solving the problem in the illustrated embodiments are similar. Please refer to the implementation principles and beneficial effects of the method. For the sake of brevity, they will not be repeated here.

[0183] The aforementioned communication device may be, for example, a chip or a chip module.

[0184] This application also provides a chip, which includes a processor that can execute the relevant steps of the terminal device in the foregoing method embodiments.

[0185] In one implementation, the chip is used to: receive first configuration information, the first configuration information being used to configure the repetition factor of the SRS in the time domain; the repetition factor being a positive integer greater than or equal to 1; determine a TD-OCC sequence matching the repetition factor, the sequence length of the TD-OCC sequence being less than or equal to the value of the repetition factor; and generate the SRS based on the TD-OCC sequence.

[0186] Optionally, the chip is specifically used to generate a TD-OCC sequence that matches the repeat factor based on a first TD-OCC sequence and / or a second TD-OCC sequence; the sequence length of the first TD-OCC sequence is a first threshold, the sequence length of the second TD-OCC sequence is a second threshold, and the first threshold is less than the second threshold.

[0187] Optionally, the sequence length of the TD-OCC sequence can be divided by the first threshold and / or the second threshold, and the sequence length of the TD-OCC sequence is equal to the value of the repeat factor;

[0188] or,

[0189] The sequence length of the TD-OCC sequence cannot be divided by the first threshold and / or the second threshold, and the sequence length of the TD-OCC sequence is less than the value of the repeat factor.

[0190] Optionally, the chip is also configured to receive a first modification signaling, which indicates the modification of a first TD-OCC sequence and / or a second TD-OCC sequence.

[0191] Optionally, the chip is also used to receive second configuration information, which is used to configure one or more reference TD-OCC sequences for the SRS;

[0192] This chip is specifically used to generate a TD-OCC sequence that matches the repeat factor based on one or more reference TD-OCC sequences.

[0193] Optionally, the chip is also configured to receive a second modification signaling, which indicates the modification of one or more reference TD-OCC sequences.

[0194] Optionally, both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources;

[0195] This chip is also used to discard the time-frequency resources of the SRS; and to transmit the physical uplink channel on the time-domain resources of the physical uplink channel.

[0196] Optionally, both the time-domain resources of the SRS and the time-domain resources of the physical uplink channel include the first time-domain resources;

[0197] Specifically, this chip is used to determine the conflicting TD-OCC sequence corresponding to the first time-domain resource and discard the SRS symbol corresponding to the conflicting TD-OCC sequence.

[0198] Optionally, the repeating factor can be one of the preset value sets.

[0199] In another implementation, the chip is used to: send first configuration information, which is used to configure the repetition factor of the SRS in the time domain; the repetition factor is a positive integer greater than or equal to 1; the repetition factor is used to determine the TD-OCC sequence that matches the repetition factor, the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor; the TD-OCC sequence is used to generate the SRS.

[0200] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of a chip module provided in an embodiment of this application. The chip module 60 can perform the relevant steps of the terminal device in the aforementioned method embodiments. The chip module 60 includes: a communication interface 601 and a chip 602.

[0201] The communication interface is used for internal communication within the chip module, or for communication between the chip module and external devices. The communication interface can also be described as a communication module. Chip 602 is used to implement the functions of the terminal device in this embodiment.

[0202] For example, chip 602 is used to receive first configuration information, which is used to configure the repetition factor of SRS in the time domain; the value of the repetition factor is a positive integer greater than or equal to 1; determine a TD-OCC sequence that matches the repetition factor, the sequence length of the TD-OCC sequence is less than or equal to the value of the repetition factor; and generate SRS based on the TD-OCC sequence.

[0203] Optionally, the chip module 60 may also include a storage module 603 and a power module 604. The storage module 603 is used to store data and instructions. The power module 604 is used to provide power to the chip module.

[0204] For various devices and products applied to or integrated into chip modules, each of its modules can be implemented using hardware methods such as circuits. Different modules can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module. Alternatively, at least some modules can be implemented using software programs that run on the processor integrated inside the chip module, while the remaining (if any) modules can be implemented using hardware methods such as circuits.

[0205] This application also provides a computer-readable storage medium storing one or more instructions adapted for loading by a processor and executing the methods provided in the above-described method embodiments.

[0206] This application also provides a computer program product containing a computer program or instructions, which, when run on a computer, causes the computer to perform the method provided in the above-described method embodiments.

[0207] It should be noted that, for the sake of simplicity, the above embodiments are all described as a series of actions. Those skilled in the art should understand that this application is not limited to the described order of actions, as some steps in the embodiments of this application can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions, steps, modules, or units involved are not necessarily essential to the embodiments of this application.

[0208] In the above embodiments, the descriptions of each embodiment in this application have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0209] The steps of the methods or algorithms described in the embodiments of this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, portable hard disks, read-only optical discs (CD-ROMs), or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Additionally, the ASIC can reside in a terminal device or management device. Alternatively, the processor and storage medium can exist as discrete components in the terminal device or management device.

[0210] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in the embodiments of this application can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0211] Regarding the modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, hardware modules / units, or a combination of both. For example, for various devices and products applied to or integrated into a chip, all of their modules / units can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits; for various devices and products applied to or integrated into a chip module, all of their modules / units can be implemented using hardware methods such as circuits, and different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The components can be implemented using software programs that run on the processor integrated within the chip module. The remaining (if any) modules / units can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into the terminal, each of its components / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or in different components within the terminal. Alternatively, at least some modules / units can be implemented using software programs that run on the processor integrated within the terminal, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits.

[0212] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above descriptions are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A method for generating a detection reference signal, characterized in that, The method includes: The system receives first configuration information, which is used to configure the repetition factor of the sounding reference signal (SRS) in the time domain; the repetition factor is a positive integer greater than or equal to 1; the first configuration information is also used to indicate the activation of a first capability, which is to use TD-OCC sequences of different sequence lengths simultaneously within one SRS resource. Determine the time-division orthogonal covering code (TD-OCC) sequence that matches the repeat factor, wherein the sequence length of the TD-OCC sequence that matches the repeat factor is less than or equal to the value of the repeat factor; the TD-OCC sequence that matches the repeat factor includes TD-OCC sequences with different sequence lengths; The SRS is generated based on the TD-OCC sequence that matches the repeat factor.

2. The method according to claim 1, characterized in that, The step of determining the TD-OCC sequence that matches the repeat factor includes: Based on the first TD-OCC sequence and / or the second TD-OCC sequence, a TD-OCC sequence matching the repeat factor is generated; the sequence length of the first TD-OCC sequence is a first threshold, the sequence length of the second TD-OCC sequence is a second threshold, and the first threshold is less than the second threshold.

3. The method according to claim 2, characterized in that, The sequence length of the TD-OCC sequence is divisible by the first threshold and / or the second threshold, and the sequence length of the TD-OCC sequence is equal to the value of the repeat factor. or, The sequence length of the TD-OCC sequence cannot be divided by the first threshold and / or the second threshold, and the sequence length of the TD-OCC sequence is less than the value of the repeat factor.

4. The method according to claim 2, characterized in that, The method further includes: Receive a first modification signaling, the first modification signaling being used to indicate modification of the first TD-OCC sequence and / or the second TD-OCC sequence.

5. The method according to claim 1, characterized in that, The method further includes: Receive second configuration information, the second configuration information being used to configure one or more reference TD-OCC sequences for the SRS; The step of determining the TD-OCC sequence that matches the repeat factor includes: Based on the one or more reference TD-OCC sequences, generate a TD-OCC sequence that matches the repeat factor.

6. The method according to claim 5, characterized in that, The method further includes: Receive a second modification signaling, which is used to indicate modification of the one or more reference TD-OCC sequences.

7. The method according to any one of claims 1 to 6, characterized in that, The time-domain resources of the SRS and the time-domain resources of the physical uplink channel both include the first time-domain resources; The method further includes: The time-frequency resources of the SRS are discarded and the physical uplink channel is transmitted on the time-domain resources of the physical uplink channel.

8. The method according to any one of claims 1 to 6, characterized in that, The time-domain resources of the SRS and the time-domain resources of the physical uplink channel both include the first time-domain resources; The method further includes: Identify the conflicting TD-OCC sequence corresponding to the first time-domain resource, and discard the SRS symbol corresponding to the conflicting TD-OCC sequence.

9. The method according to any one of claims 1 to 6, characterized in that, The repeating factor takes the value of one of the preset value sets.

10. A method for generating a detection reference signal, characterized in that, The method includes: Send first configuration information, which is used to configure the repetition factor of the SRS in the time domain; the repetition factor is a positive integer greater than or equal to 1; the first configuration information is also used to indicate the activation of a first capability, which is to use TD-OCC sequences of different sequence lengths simultaneously within one SRS resource; the repetition factor is used to determine the TD-OCC sequence that matches the repetition factor, and the sequence length of the TD-OCC sequence that matches the repetition factor is less than or equal to the value of the repetition factor; the TD-OCC sequence that matches the repetition factor includes TD-OCC sequences of different sequence lengths; the TD-OCC sequence that matches the repetition factor is used to generate the SRS.

11. A communication device, comprising a processor, a memory, and a computer program or instructions stored in the memory, characterized in that, The processor executes the computer program or instructions to implement the steps of the method according to any one of claims 1-9; or to implement the steps of the method according to claim 10.

12. A chip, comprising a processor, characterized in that, The processor performs the steps of the method according to any one of claims 1-9, or performs the steps of the method according to claim 10.

13. A chip module, characterized in that, The chip module includes a communication module, a power module, a storage module, and a chip, wherein: the power module is used to provide power to the chip module; the storage module is used to store data and instructions; the communication module is used for internal communication within the chip module, or for communication between the chip module and external devices; the chip is used to perform the steps of the method according to any one of claims 1-9; or to perform the steps of the method according to claim 10.

14. A computer-readable storage medium, characterized in that, It stores a computer program or instructions that, when executed, implement the steps of the method according to any one of claims 1-9, or perform the steps of the method according to claim 10.

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