Sequence generation method, communication device, equipment, storage medium and program product

Abstract

The invention discloses a sequence generation method, a communication device, equipment, a storage medium and a program product. The method comprises the steps that a first node generates a reference signal sequence in a first mode or generates the reference signal sequence in a second mode; the first mode comprises the following steps: generating a base sequence based on a ZC sequence, and taking the base sequence as a reference signal sequence, or performing DFT on the base sequence to obtain the reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has phase cyclic shift relative to the ZC sequence; the second mode comprises the following steps: generating a reference signal sequence based on the ZC sequence; wherein the length of the reference signal sequence is equal to the length of a root sequence, and the reference signal sequence does not have phase cyclic shift relative to the ZC sequence; and the first node sends the reference signal sequence.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a sequence generation method, communication device, equipment, storage medium, and program product. Background Technology

[0002] In sensing systems, the generation method of the reference signal sequence can be similar to that of the sounding reference signal (SRS) sequence. However, if the reference signal sequence is generated in the same way as the SRS sequence, it will result in the reference signal sequence not having constant amplitude characteristics. In other words, when the reference signal sequence is converted into a time-domain signal, a power imbalance will occur in the time domain, and the reference signal sequence will have a high peak-to-average power ratio (PAPR). Summary of the Invention

[0003] This application provides a sequence generation method, a communication device, a communication equipment, a computer storage medium, and a computer program product.

[0004] The sequence generation method provided in this application includes:

[0005] The first node generates the reference signal sequence using either the first method or the second method.

[0006] The first method includes: generating a base sequence based on the ZC sequence, using the base sequence as a reference signal sequence, or performing a Discrete Fourier Transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence;

[0007] The second method includes: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence has no phase cyclic shift relative to the ZC sequence;

[0008] The first node sends the reference signal sequence.

[0009] The sequence generation method provided in this application includes:

[0010] The second node receives a reference signal sequence sent by the first node, wherein the reference signal sequence is generated using a first method or a second method;

[0011] The first method includes: generating a base sequence based on the ZC sequence, using the base sequence as a reference signal sequence, or performing a Discrete Fourier Transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence;

[0012] The second method includes: generating a reference signal sequence based on the ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence.

[0013] The communication device provided in this application embodiment is applied to a first node, and the device includes:

[0014] A processing unit is configured to generate a reference signal sequence using a first method or a second method; the first method includes: generating a base sequence based on a ZC sequence and using the base sequence as the reference signal sequence, or performing a Discrete Fourier Transform (DFT) on the base sequence to obtain the reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence; the second method includes: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence;

[0015] The first communication unit is used to transmit the reference signal sequence.

[0016] The communication device provided in this application embodiment is applied to a second node, and the device includes:

[0017] The second communication unit is used to receive a reference signal sequence sent by the first node, wherein the reference signal sequence is generated in a first manner or in a second manner;

[0018] The first method includes: generating a base sequence based on the ZC sequence, using the base sequence as a reference signal sequence, or performing a Discrete Fourier Transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence;

[0019] The second method includes: generating a reference signal sequence based on the ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence.

[0020] The communication device provided in this application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute any of the above-described sequence generation methods.

[0021] The computer-readable storage medium provided in this application embodiment is used to store a computer program that causes a computer to execute any of the above-described sequence generation methods.

[0022] The computer program product provided in this application includes computer program instructions that cause a computer to execute any of the above-described sequence generation methods.

[0023] The technical solution of this application embodiment has two aspects. On the one hand, the first node can generate the reference signal sequence using a first method. In the first method, a DFT transform is introduced to make the reference signal sequence have constant amplitude characteristics (i.e., a low PAPR). On the other hand, the first node can generate the reference signal sequence using a second method. In the second method, the length of the reference signal sequence is limited to be equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence. This ensures that the reference signal sequence has constant amplitude characteristics (i.e., a low PAPR). Such a reference signal sequence is less prone to signal distortion during signal processing (such as power amplification and digital-to-analog conversion) and signal transmission, which helps to improve the service performance of the reference signal. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the constant amplitude characteristics of the ZC sequence;

[0025] Figure 2 This is a schematic diagram of the non-constant amplitude characteristic of an SRS sequence;

[0026] Figure 3 This is a flowchart illustrating the sequence generation method provided in the embodiments of this application. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the constant amplitude characteristics of a reference signal sequence generated by a first method according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the constant amplitude characteristics of a reference signal sequence generated by the second method according to an embodiment of this application;

[0029] Figure 6 This is a flowchart illustrating the sequence generation method provided in the embodiments of this application. Figure 2 ;

[0030] Figure 7This is a schematic diagram of the cyclic autocorrelation function of the SRS sequence provided in the embodiments of this application;

[0031] Figure 8 This is a schematic diagram of the time-domain power of the SRS sequence provided in the embodiments of this application;

[0032] Figure 9 This is a schematic diagram of the cyclic autocorrelation function of the reference signal sequence generated by the first method according to an embodiment of this application;

[0033] Figure 10 This is a time-domain power diagram of a reference signal sequence generated by a first method according to an embodiment of this application;

[0034] Figure 11 This is a schematic diagram of the cyclic autocorrelation function of the reference signal sequence generated by the second method according to an embodiment of this application;

[0035] Figure 12 This is a time-domain power diagram of a reference signal sequence generated by the second method according to an embodiment of this application;

[0036] Figure 13 This is a schematic diagram of the structural composition of the communication device provided in the embodiments of this application. Figure 1 ;

[0037] Figure 14 This is a schematic diagram of the structural composition of the communication device provided in the embodiments of this application. Figure 2 ;

[0038] Figure 15 This is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0039] Figure 16 This is a schematic structural diagram of the chip according to an embodiment of this application. Detailed Implementation

[0040] It should be noted that the term "and / or" in this document is merely a description of 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. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. It should also be understood that "instruction" mentioned in this document can be direct instruction, indirect instruction, or an indication of a related relationship. For example, A instructing B can mean that A directly instructs B, for example, B can be obtained through A; it can also mean that A indirectly instructs B, for example, A instructs C, B can be obtained through C; or it can mean that there is a related relationship between A and B. It should also be understood that "protocol" mentioned in this document can refer to standard protocols in the field of communication, such as the NR protocol and related protocols applied in future communication systems; this application does not limit this.

[0041] To facilitate understanding of the technical solutions of the embodiments of this application, the relevant technologies of the embodiments of this application are described below. The following relevant technologies are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and they all fall within the protection scope of the embodiments of this application.

[0042] 1. Communication perception

[0043] Integrated communication and sensing is one of the key technologies of the sixth major mobile communication system. The working modes of a sensing system can be divided into two main categories: independent sensing and cooperative sensing. Independent sensing is a self-transmitting and self-receiving or A-to-A-receiving mode, where node A sends a sensing signal, and the echo signal reflected by the target object returns to node A for reception. Sensing of the detected target is completed through the self-transmission and self-receiving of the signal. Cooperative sensing is an A-to-B-receiving mode, where node A sends a sensing signal, and one or more other cooperative nodes B receive the sensing signal. Sensing of the detected target is completed through joint processing of the signals.

[0044] For a receiving node to perform a sensing task, it must know the transmitted sensing signal sequence. In independent sensing mode, the receiving node naturally knows the transmitted signal sequence. However, in cooperative sensing mode, the transmitting node must inform the receiving node of the transmitted signal sequence in some way. A simple approach is to fully reuse existing communication reference signals to perform the sensing function, such as Positioning Reference Signal (PRS), Channel Status Information-Reference Signal (CSI-RS), and Demodulation Reference Signal (DMRS). The transmitting node transmits the reference signal sequence according to predetermined rules, and the receiving node can calculate the transmitted reference signal sequence using these rules to perform subsequent sensing tasks.

[0045] 2. ZC sequence

[0046] The basic sequences used for reference signals in communication systems mainly include the Zadoff-Chu (ZC) sequence, the longest linear feedback shift register (m) sequence, and the Gold sequence. For example, the Sounding Reference Signal (SRS) in New Radio (NR), the Physical Random Access Channel preamble (PRACH preamble), and the Primary Synchronization Signal (PSS) in Long Term Evolution (LTE) use the ZC sequence as their basic sequence; the PSS in NR uses the m sequence as its basic sequence; and the Secondary Synchronization Signal (SSS), CSI-RS, and PRS in NR use the Gold sequence as their basic sequence.

[0047] ZC sequences have constant amplitude characteristics, such as Figure 1 As shown, the Discrete Fourier Transform (DFT) of the ZC sequence is still a ZC sequence; therefore, the PAPR of the ZC sequence is low. The ZC sequence exhibits good autocorrelation and cross-correlation properties. The correlation between the ZC sequence and its cyclically shifted sequence is zero, and the cyclic cross-correlation between different root sequences is very low, with a correlation of 10*log10(1 / (Mzc)^0.5), where Mzc is the length of the ZC sequence. Furthermore, the ZC sequence has high Doppler tolerance, meaning it has good resistance to frequency shift and good detection performance for high Doppler frequency-shifted echo signals reflected from high-speed targets.

[0048] The formula for generating ZC sequences is:

[0049]

[0050] Where u is the root sequence number of the ZC sequence, and N ZC N is the length of the root sequence. ZC It must be an odd number, and u and N ZC Coprime (coprime). Generally, N... ZC It will take prime numbers. It should be noted that the length N of the root sequence is... ZC The root sequence number u is a key parameter for generating the ZC sequence.

[0051] 3. Reference signal sequence

[0052] Taking the SRS reference signal as an example, the base sequence used by SRS is the ZC sequence. The formula for generating the SRS sequence is as follows:

[0053]

[0054] in, Represents an SRS sequence; It is obtained by subsequent calculation using formula (4).

[0055] This represents the number of subcarriers occupied in the SRS frequency domain, calculated based on the higher-layer parameter configuration. This represents the number of OFDM symbols occupied in the SRS time domain and is configured by higher-level parameters.

[0056] SRS supports multi-port transmission. This represents the number of antenna ports for the SRS. p i Let δ be the number of the i-th port; δ = log2(K TC ), K TC K is configured for transport combo. TC ∈{2,4,8}, configured by the higher-level parameter transmissionComb; α i For port p i The corresponding cyclic shift is calculated using the following formula:

[0057]

[0058]

[0059] in, It is obtained from the high-level parameter transmissionComb. K configured by transport comb TCSure.

[0060] u and v represent the sequence group number and the sequence number within the group, respectively. When SRS is configured for frequency hopping, the values ​​of u and v will change during the generation of the SRS sequence for the same UE; when SRS is configured for non-frequency hopping, the value of u is fixed. v = 0. It is obtained by configuring the sequence identifier (sequenceId) in the high-level parameter SRS-Resource IE.

[0061] Furthermore, in formula (2) Generate using the following formula:

[0062]

[0063] 0≤n≤M ZC (4)

[0064] Where α is the cyclic shift, which is calculated using the above formula (3); It is a ZC sequence; M ZC The length of the SRS sequence is equal to that in formula (2).

[0065] Furthermore, in formula (4) (i.e., the ZC sequence) is generated using the following formula:

[0066]

[0067] Where, N ZC N represents the length of the root sequence. ZC It is less than M ZC The largest prime number.

[0068] Although ZC sequences have constant amplitude characteristics, the actual sequence length M used in SRS is limited. ZC Greater than the root sequence length N ZC And there exists a phase cyclic shift term e jαn This causes the actual SRS sequence to no longer have constant amplitude characteristics, such as... Figure 2 As shown.

[0069] In a sensing system, the generation method of the reference signal sequence can refer to the generation method of the SRS sequence. However, since the actual sequence length M used in SRS is... ZC Greater than the root sequence length N ZC And there exists a phase cyclic shift term e jαnThis causes the actual SRS sequence to lose its constant amplitude characteristic and exhibit power imbalance in the time domain, resulting in a high PAPR (Power Averaging Reduction). On one hand, transmitting a signal with a high PAPR places high demands on the power amplifier, requiring the transmitting power amplifier to have a strictly linear region to ensure the signal is not distorted. Once this linear region is exceeded or the linearity is not ideal, signal distortion will occur, significantly impacting sensing performance. On the other hand, the echo signal from the sensing signal transmitted by the transmitting node, after reflection from the target object, is very weak at the receiving node, and power imbalance in the time domain makes it even more prone to distortion of this weak signal. Therefore, it is necessary to design a sequence with constant amplitude characteristics and balanced power in the time domain for the sensing reference signal. To this end, the technical solution of the embodiments of this application is proposed.

[0070] To facilitate understanding of the technical solutions of the embodiments of this application, the technical solutions of this application are described in detail below through specific embodiments. The embodiments of this application include at least some of the following contents.

[0071] It should be noted that, according to the application scenario / business scenario of the reference signal, the reference signal / reference signal sequence described in the embodiments of this application can be a sensing reference signal / sensing reference signal sequence (corresponding to a sensing scenario / sensing business). However, it is not limited to this. The reference signal / reference signal sequence described in the embodiments of this application can also be applied to other scenarios, and correspondingly, the reference signal / reference signal sequence can also have other naming methods.

[0072] It should be noted that the first node described in the embodiments of this application is a reference signal / reference signal sequence transmitting node (hereinafter referred to as the transmitting node). The first node can be a base station. However, it is not limited to this; the first node can also be a terminal.

[0073] It should be noted that the second node described in the embodiments of this application is a reference signal / reference signal sequence receiving node (hereinafter referred to as the receiving node). The second node can be a base station or a terminal.

[0074] Figure 3 This is a flowchart illustrating the sequence generation method provided in the embodiments of this application. Figure 1 ,like Figure 3 As shown, the sequence generation method includes the following steps:

[0075] Step 301: The first node generates a reference signal sequence using either the first method or the second method.

[0076] In this embodiment, the first node determines the generation method of the reference signal sequence. There are two generation methods for the reference signal sequence, referred to as the first method and the second method, respectively. The first method can also be called generation method type 1 (Type 1), and the second method can also be called generation method type 2 (Type 2). These two generation methods are described below.

[0077] 1. First method

[0078] The first method includes: 1) generating a base sequence based on the ZC sequence (which can be a pure ZC sequence); 2) performing a Discrete Fourier Transform (DFT) on the base sequence to obtain a reference signal sequence.

[0079] Here, the length of the reference signal sequence is greater than the length of the root sequence (i.e., the length of the ZC sequence), and the reference signal sequence has a phase cyclic shift relative to the ZC sequence.

[0080] Here, the reference signal supports multi-antenna port (multi-port) transmission; in the first mode, different antenna ports correspond to / use different phase cyclic shifts.

[0081] It should be noted that the basis sequence may not be a pure ZC sequence and may not possess constant amplitude characteristics. Therefore, a DFT transform is required on the basis sequence to obtain the final reference signal sequence. The reference signal sequence after the DFT transform possesses constant amplitude characteristics.

[0082] like Figure 4 As shown, the length of a pure ZC sequence is N. ZC (that is, the length of the pure ZC sequence is equal to the length N of the root sequence) ZC Based on this ZC sequence, after transformation (involving sequence growth and phase cyclic shift), the length of the resulting base sequence is M. ZC (M ZC >N ZC After performing a DFT transform on the base sequence, the length of the resulting reference signal sequence is M. ZC After the reference signal sequence is converted into a time-domain signal, the time-domain power has a constant amplitude characteristic.

[0083] It should be noted that in the first approach, the DFT transformation of the base sequence can be omitted, and the base sequence can be directly used as the reference signal sequence. For example, the base sequence generated based on the ZC sequence may have constant amplitude characteristics. In this case, the DFT transformation of the base sequence can be omitted, and the base sequence can be directly used as the final reference signal sequence.

[0084] The following explains the specific method for generating the reference signal sequence in the first approach.

[0085] 1) Generation of base sequences

[0086] The formula for generating the base sequence is:

[0087]

[0088]

[0089] in, Represents the base sequence; It is obtained by subsequent calculation using formula (9).

[0090] This represents the number of subcarriers occupied in the frequency domain of the reference signal, calculated based on the higher-layer parameter configuration.

[0091] This represents the number of OFDM symbols occupied in the time domain of the reference signal, and is configured by higher-layer parameters.

[0092] With transport comb configuration K TC Related. To configure more flexible reference signal density, more transmission comb configurations K can be set. TC The value of K, for example TC ∈{1,2,3,4,6,8,12}, configured by higher-layer parameters. The number of subcarriers occupied in the frequency domain of the reference signal is calculated as follows:

[0093]

[0094] Where, m RS The number of PRBs occupied by the reference signal is configured by higher-layer parameters; It is the number of subcarriers in each PRB, which is fixed at 12.

[0095] The reference signal supports multi-port transmission. p is the number of antenna ports for the reference signal. i Let α be the number of the i-th port; i For port p i The corresponding cyclic shift is calculated using the following formula:

[0096]

[0097] in, The initial phase cyclic shift is configured by the higher-level parameter `transmissionComb`, and the maximum phase cyclic shift is... K configured by transport comb TC Confirmed, p startIt is the starting number of the port of the reference signal. For example, if the port number of the reference signal is 8000 to 8003, then the starting number of the port is 8000.

[0098] Furthermore, in formula (6) Generate using the following formula:

[0099]

[0100] 0≤n≤M ZC (9)

[0101] Where α is the cyclic shift, which is calculated using the above formula (8); For ZC sequences; u is the root sequence number of the ZC sequence, configured by higher-level parameters; M ZC The length of the reference signal sequence is equal to that in formula (6).

[0102] Furthermore, in formula (9) (i.e., the ZC sequence) is generated using the following formula:

[0103]

[0104] Where, N ZC N represents the length of the root sequence. ZC It is less than M ZC The largest prime number.

[0105] 2) Generation of the reference signal sequence

[0106] The base sequences generated in the above process Do M ZC The point-wise DFT transform yields the final sensing reference signal sequence as follows:

[0107]

[0108] in, That is, the length of the reference signal sequence is equal to the number of subcarriers occupied in the frequency domain of the reference signal; This represents the number of OFDM symbols occupied in the time domain of the reference signal.

[0109] 2. Second method

[0110] The second method includes generating a reference signal sequence based on the ZC sequence (which needs to be a pure ZC sequence).

[0111] Here, the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence.

[0112] Here, the reference signal supports multi-antenna port (multi-port) transmission; in the second method, different antenna ports correspond to / use different root sequence numbers.

[0113] like Figure 5 As shown, the length of a pure ZC sequence is N. ZC (that is, the length of the pure ZC sequence is equal to the length N of the root sequence) ZC Based on this ZC sequence, after transformation (with consistent control sequence lengths and different root sequence numbers corresponding to / using different antenna ports), the length of the resulting reference signal sequence is M. ZC (M ZC =N ZC Furthermore, the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence, and after converting the reference signal sequence into a time-domain signal, the time-domain power has a constant amplitude characteristic.

[0114] The following explains the specific method for generating the reference signal sequence in the second approach.

[0115] The formula for generating the reference signal sequence is:

[0116]

[0117] in, Represents a reference signal sequence; It is calculated using the subsequent formula (15).

[0118] This represents the number of subcarriers occupied in the frequency domain of the reference signal, calculated based on the higher-layer parameter configuration.

[0119] This represents the number of OFDM symbols occupied in the time domain of the reference signal, and is configured by higher-layer parameters.

[0120] With transport comb configuration K TC Related. To configure more flexible reference signal density, more transmission comb configurations K can be set. TC The value of K, for example TC ∈{1,2,3,4,6,8,12}, configured by higher-layer parameters. The number of subcarriers occupied in the frequency domain of the reference signal is calculated as follows:

[0121]

[0122] in, Not exceeding The largest prime number of . Where m RS The number of RBs occupied by the reference signal is configured by higher-layer parameters; This refers to the number of subcarriers in each PRB, which is fixed at 12. It should be noted that due to the sequence length in the second method... Set to no more than The largest prime number will have some resource elements (REs) left empty in the last one or more PRBs.

[0123] The reference signal supports multi-port transmission. p is the number of antenna ports for the reference signal. i Let u be the number of the i-th port; i For port p i The corresponding root sequence number is calculated using the following formula:

[0124]

[0125] Among them, u0 is configured by higher-level parameters; p start It is the starting number of the port of the reference signal. For example, if the port number of the reference signal is 8000 to 8003, then the starting number of the port is 8000. It is determined by the above formula (13).

[0126] Furthermore, in formula (12) Generate using the following formula:

[0127]

[0128] Where, N ZC Represents the length of the root sequence, which is equal to the length of the root sequence in formula (12). u i Calculated using the above formula (14); u is the root sequence number, configured by the higher-level parameters.

[0129] It should be noted that, compared to the first method, the second method has lower processing complexity, but may result in resource waste. In addition, the second method's "different antenna ports use different root sequence numbers" makes the cross-correlation characteristics between ports better.

[0130] In some implementations, the first node may select either the first or second method described above to generate the reference signal sequence according to the following selection criteria:

[0131] 1) The first method is used by default to generate the reference signal sequence;

[0132] 2) Based on the perceived task volume and / or resource utilization rate, select either the first or second method described above to generate the reference signal sequence. Specifically, if the perceived task volume is less than or equal to the first threshold and the resource utilization rate in the system is less than or equal to the second threshold, select the second method to generate the reference signal sequence. If the perceived task volume is greater than the first threshold, or the resource utilization rate in the system is greater than the second threshold, select the first method to generate the reference signal sequence. In other words, when the perceived task volume is low and the resource utilization rate in the system is low, the second method is used to generate the reference signal sequence; when the perceived task volume is high or the resource utilization rate in the system is high, the first method is used to generate the reference signal sequence.

[0133] The first node generates a reference signal sequence according to the selected generation method (first method or second method).

[0134] Step 302: The first node sends a reference signal sequence.

[0135] In some implementations, the first node sends a related configuration of the reference signal to the second node. This related configuration includes at least one of the following: a configuration of the reference signal sequence (i.e., a related configuration for generating the reference signal sequence), a time-frequency resource configuration of the reference signal, and a reporting configuration of the reference signal. Thus, the second node can receive the reference signal sequence according to this related configuration.

[0136] In some implementations, the first node is base station A and the second node is base station B. Base station A sends the relevant configuration of the reference signal to base station B through Xn interface signaling.

[0137] In some implementations, the first node is base station A and the second node is a terminal. Base station A sends relevant configurations of reference signals to base station B through one or more of the following signaling: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (MAC CE), and Downlink Control Information (DCI).

[0138] In some implementations, the configuration of the reference signal sequence (i.e., the relevant configuration for generating the reference signal sequence) includes at least one of the following:

[0139] 1) Method for generating the reference signal sequence.

[0140] Here, the reference signal sequence can be generated using either method one or method two as described above.

[0141] 2) The first set of parameters is used by the first node to generate the reference signal sequence in the first manner.

[0142] Here, the first set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal (i.e., m) RS ), transmit Comb configuration (i.e., K) TC ), the number of OFDM symbols occupied by the reference signal (i.e. The number of antenna ports of the reference signal (i.e. Phase cyclic shift parameter of the reference signal (i.e. The root sequence number (i.e., u) of the ZC sequence used for reference signal generation, and the indication information, wherein the indication information is used to indicate whether the reference signal sequence needs to be DFT transformed or not before transmission.

[0143] It should be noted that the indication information is an optional parameter. When the step "perform a DFT transformation on the base sequence to obtain the sensing reference signal sequence" is not present in the first method, this indication information needs to be added to indicate "whether a DFT transformation of the reference signal sequence is required before transmission". This indication information can be represented by an enable / disable field. For example, a value of "enable" means "a DFT transformation of the reference signal sequence is required before transmission"; a value of "disable" means "a DFT transformation of the reference signal sequence is not required before transmission". When there is no "enable / disable" field, it defaults to the first method having the step "perform a DFT transformation on the base sequence to obtain the sensing reference signal sequence", and therefore, a DFT transformation of the reference signal sequence is not required before transmission.

[0144] 3) The second set of parameters is used by the first node to generate the reference signal sequence in the second way.

[0145] Here, the second set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal (i.e., m) RS ), and the transmission comb configuration (i.e., K) TC ), the number of OFDM symbols occupied by the reference signal (i.e. The number of antenna ports of the reference signal (i.e. The root sequence number (i.e., u0) of the ZC sequence used to generate the reference signal corresponding to the starting antenna port.

[0146] In some implementations, the time-frequency resource configuration of the reference signal includes at least one of the following:

[0147] 1) Starting position in the frequency domain.

[0148] Here, the starting position in the frequency domain includes, for example, the starting PRB number.

[0149] 2) Time domain period.

[0150] 3) Starting position in the time domain.

[0151] Here, the starting position in the time domain includes, for example, the starting radio frame number, the starting timeslot number, and the starting OFDM symbol number within the timeslot.

[0152] In some implementations, the reporting configuration of the reference signal includes at least one of the following:

[0153] 1) Type of reported quantity.

[0154] Here, the types of reported quantities include, for example, Reference Signal Receiving Power (RSRP) and Signal to Interference plus Noise Ratio (SINR).

[0155] 2) Reporting method.

[0156] Here, the reporting methods include periodic reporting and non-periodic reporting.

[0157] The first node transmits the generated reference signal sequence on time-frequency resources corresponding to the time-frequency resource configuration of the aforementioned reference signal.

[0158] The technical solution of this application proposes a method for generating a reference signal sequence based on a ZC sequence. This reference signal sequence has good autocorrelation and cross-correlation characteristics and an extremely low peak-to-average power ratio (PAPR). Furthermore, the technical solution of this application also provides relevant configurations for the reference signal sequence so that the receiving end of the reference signal sequence can accurately calculate the sensing reference signal sequence transmitted by the transmitting end.

[0159] Figure 6 This is a flowchart illustrating the sequence generation method provided in the embodiments of this application. Figure 2 ,like Figure 6 As shown, the sequence generation method includes the following steps:

[0160] Step 601: The second node receives the reference signal sequence sent by the first node; wherein the reference signal sequence is generated using either the first method or the second method.

[0161] The following explains these two generation methods.

[0162] 1. First method

[0163] The first method includes: 1) generating a base sequence based on the ZC sequence (which can be a pure ZC sequence); 2) performing a Discrete Fourier Transform (DFT) on the base sequence to obtain a reference signal sequence.

[0164] Here, the length of the reference signal sequence is greater than the length of the root sequence (i.e., the length of the ZC sequence), and the reference signal sequence has a phase cyclic shift relative to the ZC sequence.

[0165] Here, the reference signal supports multi-antenna port (multi-port) transmission; in the first mode, different antenna ports correspond to / use different phase cyclic shifts.

[0166] It should be noted that in the first approach, the DFT transformation of the base sequence can be omitted, and the base sequence can be directly used as the reference signal sequence. For example, the base sequence generated based on the ZC sequence may have constant amplitude characteristics. In this case, the DFT transformation of the base sequence can be omitted, and the base sequence can be directly used as the final reference signal sequence.

[0167] For details on the specific method of generating the reference signal sequence in the first approach, please refer to the preceding text. Figure 3 Related descriptions.

[0168] 2. Second method

[0169] The second method includes generating a reference signal sequence based on the ZC sequence (which needs to be a pure ZC sequence).

[0170] Here, the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence.

[0171] Here, the reference signal supports multi-antenna port (multi-port) transmission; in the second method, different antenna ports correspond to / use different root sequence numbers.

[0172] For details on the specific generation method of the reference signal sequence in the second method, please refer to the preceding text. Figure 3 Related descriptions.

[0173] In some implementations, the second node receives the relevant configuration of the reference signal sent by the first node. The relevant configuration of the reference signal includes at least one of the following: configuration of the reference signal sequence, configuration of the time and frequency resources of the reference signal, and configuration of the reporting of the reference signal.

[0174] In some implementations, the first node is base station A, and the second node is base station B. Base station B receives the relevant configuration of the reference signal sent by base station A through the Xn interface signaling.

[0175] In some implementations, the first node is base station A, and the second node is a terminal that receives relevant configurations of reference signals transmitted by base station A through one or more of the following signaling: RRC signaling, MAC CE, and DCI.

[0176] In some implementations, the configuration of the reference signal sequence (i.e., the relevant configuration for generating the reference signal sequence) includes at least one of the following:

[0177] 1) Method for generating the reference signal sequence.

[0178] Here, the reference signal sequence can be generated using either method one or method two as described above.

[0179] 2) The first set of parameters is used by the first node to generate the reference signal sequence in the first manner.

[0180] Here, the first set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal (i.e., m) RS ), transmit Comb configuration (i.e., K) TC ), the number of OFDM symbols occupied by the reference signal (i.e. The number of antenna ports of the reference signal (i.e. Phase cyclic shift parameter of the reference signal (i.e. The root sequence number (i.e., u) of the ZC sequence used for reference signal generation, and the indication information, wherein the indication information is used to indicate whether the reference signal sequence needs to be DFT transformed or not before transmission.

[0181] It should be noted that the indication information is an optional parameter. When the step "perform a DFT transformation on the base sequence to obtain the sensing reference signal sequence" is not present in the first method, this indication information needs to be added to indicate "whether a DFT transformation of the reference signal sequence is required before transmission". This indication information can be represented by an enable / disable field. For example, a value of "enable" means "a DFT transformation of the reference signal sequence is required before transmission"; a value of "disable" means "a DFT transformation of the reference signal sequence is not required before transmission". When there is no "enable / disable" field, it defaults to the first method having the step "perform a DFT transformation on the base sequence to obtain the sensing reference signal sequence", and therefore, a DFT transformation of the reference signal sequence is not required before transmission.

[0182] 3) The second set of parameters is used by the first node to generate the reference signal sequence in the second way.

[0183] Here, the second set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal (i.e., m) RS ), and the transmission comb configuration (i.e., K) TC ), the number of OFDM symbols occupied by the reference signal (i.e. The number of antenna ports of the reference signal (i.e. The root sequence number (i.e., u0) of the ZC sequence used to generate the reference signal corresponding to the starting antenna port.

[0184] In some implementations, the time-frequency resource configuration of the reference signal includes at least one of the following:

[0185] 1) Starting position in the frequency domain.

[0186] Here, the starting position in the frequency domain includes, for example, the starting PRB number.

[0187] 2) Time domain period.

[0188] 3) Starting position in the time domain.

[0189] Here, the starting position in the time domain includes, for example, the starting radio frame number, the starting timeslot number, and the starting OFDM symbol number within the timeslot.

[0190] In some implementations, the reporting configuration of the reference signal includes at least one of the following:

[0191] 1) Type of reported quantity.

[0192] Here, the types of reported quantities include, for example, Reference Signal Receiving Power (RSRP) and Signal to Interference plus Noise Ratio (SINR).

[0193] 2) Reporting method.

[0194] Here, the reporting methods include periodic reporting and non-periodic reporting.

[0195] The technical solution of this application proposes a method for generating a reference signal sequence based on a ZC sequence. This reference signal sequence has good autocorrelation and cross-correlation characteristics and an extremely low peak-to-average power ratio (PAPR). Furthermore, the technical solution of this application also provides relevant configurations for the reference signal sequence so that the receiving end of the reference signal sequence can accurately calculate the sensing reference signal sequence transmitted by the transmitting end.

[0196] The technical solutions of the embodiments of this application are illustrated below with specific application examples. In these examples, a sensing reference signal is used as an example. For the sensing reference signal, Figure 3 In formulas (6) to (15), “RS” (i.e., reference signal) can be replaced with “SENRS” (i.e., sensing reference signal).

[0197] Application Example 1

[0198] This application example uses the first method (i.e., generation method Type 1) to generate the sensing reference signal sequence.

[0199] For the first method (i.e., generation method Type 1), the relevant configuration for generating the reference signal sequence is as follows:

[0200] 1) Number of PRBs occupied by the sensing reference signal m SENRS =106;

[0201] 2) Transmit Comb Configuration K TC =2;

[0202] 3) The number of OFDM symbols occupied in the time domain of the sensing reference signal

[0203] 4) Number of antenna ports for sensing reference signal

[0204] 5) Sensing reference signal phase cyclic shift parameter

[0205] 6) The root sequence number u of the ZC sequence used to generate the sensing reference signal is 25;

[0206] The number of subcarriers occupied by the sensing reference signal is calculated as follows:

[0207]

[0208] Assuming the reference signal is sensed The numbering of the four antenna ports p i The starting number p among the four antenna ports is 8000 to 8003. start For 8000, transmit Comb configuration K TC =2 corresponds to the maximum phase cyclic shift And the initial phase is cyclically shifted. If configured to 0, the phase cyclic shifts on the four antenna ports are as follows:

[0209]

[0210] The following is the process of generating the basis sequence corresponding to antenna port p0:

[0211]

[0212] Among them, the ZC sequence (i.e. The specific generation process is as follows:

[0213]

[0214] Through the above process, the basis sequence on the l′-th OFDM symbol can be obtained as follows:

[0215]

[0216] Next, a 636-point DFT transformation is performed on the base sequence as follows:

[0217]

[0218] 0≤n<636, l′∈{0,1,2}

[0219] Cyclic autocorrelation and time-domain power characteristics of SRS sequences are as follows: Figure 7 and Figure 8 As shown, the cyclic autocorrelation and time-domain power characteristics of the sensing parameter signal sequence generated by Method 1 are as follows: Figure 9 and Figure 10 As shown, the cyclic autocorrelation function of the SRS sequence, besides having a correlation peak close to 1 at the cyclic shift of 0, exhibits glitches at some cyclic shifts, with a correlation value of approximately 0.25. In contrast, the autocorrelation function of the sensing parameter signal sequence generated through Method 1 is highly ideal, showing a correlation peak of 1 only at the cyclic shift of 0, without any other glitches. Furthermore, the time-domain power of the SRS sequence varies, with a relative power peak reaching approximately 3.9 and an average power of 1, i.e., PAPR = 3.9 = 5.9 dB. In contrast, the time-domain power distribution of the sensing parameter signal sequence generated through Method 1 is highly ideal, with a relative power equal to 1 everywhere, i.e., PAPR = 1 = 0 dB.

[0220] Application Example 2

[0221] This application example uses the second method (i.e., generation method Type 2) to generate the sensing reference signal sequence.

[0222] For the second method (i.e., generation method Type 2), the relevant configuration for generating the reference signal sequence is as follows:

[0223] 1) Number of PRBs occupied by the sensing reference signal m SENRS =106;

[0224] 2) Transmit Comb Configuration K TC =2;

[0225] 3) The number of OFDM symbols occupied in the time domain of the sensing reference signal

[0226] 4) Number of antenna ports for sensing reference signal

[0227] 5) The root sequence number y = 25 of the ZC sequence used to generate the sensing reference signal;

[0228] The number of subcarriers occupied by the sensing reference signal is calculated as follows:

[0229]

[0230] Assuming the reference signal is sensed The numbering of the four antenna ports p i For 8000~8003, the starting port p among the four antenna ports. start If the value is 8000, then the root sequence number u used by the four antenna ports is... i They are respectively:

[0231]

[0232]

[0233] The following is the process of generating the sensing reference signal sequence corresponding to antenna port p0:

[0234]

[0235] The cyclic autocorrelation and time-domain power characteristics of the sensing parameter signal sequence generated by method two are as follows: Figure 11 and Figure 12 As shown, the autocorrelation function of the sensing parameter signal sequence generated by Method 2 is very ideal, with a correlation peak of 1 only at the cyclic shift of 0, and no other glitches; the time-domain power distribution is also very ideal, with the relative power equal to 1 everywhere, i.e., PAPR = 1 = 0 dB.

[0236] The technical solution of this application proposes a method for generating a sensing reference signal sequence based on a ZC sequence and a corresponding configuration method. Compared with existing SRS reference signal sequences, this sensing reference signal sequence has better autocorrelation and cross-correlation characteristics, and an extremely low peak-to-average power ratio (PAPR), i.e., it has constant amplitude characteristics. Such a reference signal sequence is more suitable as a sensing reference signal sequence. During signal processing, such as power amplification, digital-to-analog conversion, and signal transmission, signal distortion is less likely to occur, which helps to improve sensing performance.

[0237] Figure 13 This is a schematic diagram of the structural composition of the communication device provided in the embodiments of this application. Figure 1 Applied to the first node, such as Figure 13 As shown, the communication device includes:

[0238] Processing unit 1301 is configured to generate a reference signal sequence using a first method or a second method; the first method includes: generating a base sequence based on a ZC sequence, using the base sequence as the reference signal sequence, or performing a Discrete Fourier Transform (DFT) on the base sequence to obtain the reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence; the second method includes: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence;

[0239] The first communication unit 1302 is used to transmit the reference signal sequence.

[0240] In some implementations, the reference signal supports transmission via multiple antenna ports;

[0241] In the first method, different antenna ports correspond to different phase cyclic shifts;

[0242] In the second method, different antenna ports correspond to different root sequence numbers.

[0243] In some implementations, the first communication unit 1302 is used to send relevant configurations of the reference signal to the second node. The relevant configurations of the reference signal include at least one of the following: configuration of the reference signal sequence, configuration of the time and frequency resources of the reference signal, and configuration of the reporting of the reference signal.

[0244] In some implementations, the configuration of the reference signal sequence includes at least one of the following:

[0245] The method for generating the reference signal sequence;

[0246] The first set of parameters is used by the first node to generate a reference signal sequence using the first method;

[0247] The second set of parameters is used by the first node to generate a reference signal sequence using the second method.

[0248] In some implementations, the first set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal, the transmission comb configuration, the number of OFDM symbols occupied by the reference signal, the number of antenna ports of the reference signal, the phase cyclic shift parameter of the reference signal, the root sequence number of the ZC sequence used to generate the reference signal, and indication information, wherein the indication information is used to indicate whether the reference signal sequence needs to be DFT transformed or not before transmission.

[0249] In some implementations, the second set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal, the transmission comb configuration, the number of orthogonal frequency division multiplexing (OFDM) symbols occupied by the reference signal, the number of antenna ports of the reference signal, and the root sequence number of the ZC sequence used to generate the reference signal corresponding to the starting antenna port.

[0250] Those skilled in the art should understand that Figure 13 The functions of each unit in the communication device shown can be understood by referring to the relevant description of the aforementioned method. Figure 13 The functions of each unit in the communication device shown can be implemented by a program running on a processor or by specific logic circuits.

[0251] Figure 14 This is a schematic diagram of the structural composition of the communication device provided in the embodiments of this application. Figure 2 Applied to the second node, such as Figure 14 As shown, the communication device includes:

[0252] The second communication unit 1401 is used to receive a reference signal sequence sent by the first node, wherein the reference signal sequence is generated in a first manner or in a second manner;

[0253] The first method includes: generating a base sequence based on the ZC sequence, using the base sequence as a reference signal sequence, or performing a Discrete Fourier Transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence;

[0254] The second method includes: generating a reference signal sequence based on the ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence.

[0255] In some implementations, the reference signal supports transmission via multiple antenna ports;

[0256] In the first method, different antenna ports correspond to different phase cyclic shifts;

[0257] In the second method, different antenna ports correspond to different root sequence numbers.

[0258] In some embodiments, the second communication unit 1401 is used to receive the relevant configuration of the reference signal sent by the first node. The relevant configuration of the reference signal includes at least one of the following: configuration of the reference signal sequence, configuration of the time and frequency resources of the reference signal, and configuration of the reporting of the reference signal.

[0259] In some implementations, the configuration of the reference signal sequence includes at least one of the following:

[0260] The method for generating the reference signal sequence;

[0261] The first set of parameters is used by the first node to generate a reference signal sequence using the first method;

[0262] The second set of parameters is used by the first node to generate a reference signal sequence using the second method.

[0263] In some implementations, the first set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal, the transmission comb configuration, the number of OFDM symbols occupied by the reference signal, the number of antenna ports of the reference signal, the phase cyclic shift parameter of the reference signal, the root sequence number of the ZC sequence used to generate the reference signal, and indication information, wherein the indication information is used to indicate whether the reference signal sequence needs to be DFT transformed or not before transmission.

[0264] In some implementations, the second set of parameters includes one or more of the following parameters: the number of PRBs occupied by the reference signal, the transmission comb configuration, the number of OFDM symbols occupied by the reference signal, the number of antenna ports of the reference signal, and the root sequence number of the ZC sequence used to generate the reference signal corresponding to the starting antenna port.

[0265] Those skilled in the art should understand that Figure 14 The functions of each unit in the communication device shown can be understood by referring to the relevant description of the aforementioned method. Figure 14 The functions of each unit in the communication device shown can be implemented by a program running on a processor or by specific logic circuits.

[0266] Figure 15 This is a schematic structural diagram of a communication device 1500 provided in an embodiment of this application. Figure 15 The communication device 1500 shown includes a processor 1510, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0267] Optionally, such as Figure 15 As shown, the communication device 1500 may further include a memory 1520. The processor 1510 can retrieve and run computer programs from the memory 1520 to implement the methods described in this embodiment.

[0268] The memory 1520 can be a separate device independent of the processor 1510, or it can be integrated into the processor 1510.

[0269] Optionally, such as Figure 15 As shown, the communication device 1500 may also include a transceiver 1530, and the processor 1510 may control the transceiver 1530 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0270] The transceiver 1530 may include a transmitter and a receiver. The transceiver 1530 may further include an antenna, and the number of antennas may be one or more.

[0271] Optionally, the communication device 1500 may specifically be the first node in the embodiments of this application, and the communication device 1500 may implement the corresponding processes implemented by the first node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0272] Optionally, the communication device 1500 may specifically be the second node in the embodiments of this application, and the communication device 1500 may implement the corresponding processes implemented by the second node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0273] Figure 16 This is a schematic structural diagram of the chip according to an embodiment of this application. Figure 16 The chip 1600 shown includes a processor 1610, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0274] Optionally, such as Figure 16 As shown, chip 1600 may further include memory 1620. Processor 1610 can retrieve and run computer programs from memory 1620 to implement the methods described in this embodiment.

[0275] The memory 1620 can be a separate device independent of the processor 1610, or it can be integrated into the processor 1610.

[0276] Optionally, the chip 1600 may also include an input interface 1630. The processor 1610 can control the input interface 1630 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0277] Optionally, the chip 1600 may also include an output interface 1640. The processor 1610 can control the output interface 1640 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0278] Optionally, the chip can be applied to the first node in the embodiments of this application, and the chip can implement the corresponding processes implemented by the first node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0279] Optionally, the chip can be applied to the second node in the embodiments of this application, and the chip can implement the corresponding processes implemented by the second node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0280] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0281] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0282] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0283] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0284] This application also provides a computer-readable storage medium for storing computer programs.

[0285] Optionally, the computer-readable storage medium can be applied to the first node in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the first node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0286] Optionally, the computer-readable storage medium can be applied to the second node in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the second node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0287] This application also provides a computer program product, including computer program instructions.

[0288] Optionally, the computer program product can be applied to the first node in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0289] Optionally, the computer program product can be applied to the second node in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the second node in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0290] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0291] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0292] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0293] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0294] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0295] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0296] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sequence generation method, characterized by, The method comprises: The first node generates a reference signal sequence in a first manner or in a second manner; The first manner comprises: generating a base sequence based on a ZC sequence, taking the base sequence as a reference signal sequence, or performing a discrete Fourier transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence; The second manner comprises: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence; The first node transmits the reference signal sequence.

2. The method of claim 1, wherein, The reference signal supports multi-antenna port transmission; In the first manner, different antenna ports correspond to different phase cyclic shifts; In the second manner, different antenna ports correspond to different root sequence numbers.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: The first node transmits, to a second node, related configurations of a reference signal, the related configurations of the reference signal comprising at least one of the following: configuration of a reference signal sequence, time-frequency resource configuration of a reference signal, reporting configuration of a reference signal.

4. The method of claim 3, wherein, The configuration of the reference signal sequence comprises at least one of the following: A generation manner of a reference signal sequence; A first set of parameters, used by the first node to generate a reference signal sequence in the first manner; A second set of parameters, used by the first node to generate a reference signal sequence in the second manner.

5. The method of claim 4, wherein, The first set of parameters comprises one or more of the following parameters: a number of physical resource blocks (PRBs) occupied by a reference signal, a transmission comb configuration, a number of OFDM symbols occupied by a reference signal, a number of antenna ports of a reference signal, a phase cyclic shift parameter of a reference signal, a root sequence number of a ZC sequence used for generating a reference signal, and indication information, wherein the indication information is used to indicate whether the reference signal sequence needs to be subjected to a DFT transform before being transmitted or does not need to be subjected to a DFT transform.

6. The method of claim 4, wherein, The second set of parameters comprises one or more of the following parameters: a number of PRBs occupied by a reference signal, a transmission comb configuration, a number of OFDM symbols occupied by a reference signal, a number of antenna ports of a reference signal, and a root sequence number of a ZC sequence used for generating a reference signal corresponding to a starting antenna port.

7. A sequence generation method characterized by, The method comprises: The second node receives a reference signal sequence transmitted by a first node, wherein the reference signal sequence is generated in a first manner or in a second manner; The first manner comprises: generating a base sequence based on a ZC sequence, taking the base sequence as a reference signal sequence, or performing a discrete Fourier transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the length of the root sequence, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence; The second manner comprises: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the length of the root sequence, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence; The second mode comprises: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the root sequence length, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence.

8. The method of claim 7, wherein, The reference signal supports multi-antenna port transmission. In the first mode, different antenna ports correspond to different phase cyclic shifts. In the second mode, different antenna ports correspond to different root sequence numbers.

9. The method according to claim 7 or 8, characterized in that, The method further comprises: The second node receives a related configuration of the reference signal transmitted by the first node, and the related configuration of the reference signal comprises at least one of the following: a configuration of a reference signal sequence, a time-frequency resource configuration of a reference signal, and a reporting configuration of a reference signal.

10. The method of claim 9, wherein, The configuration of the reference signal sequence comprises at least one of the following: A generation mode of a reference signal sequence; A first set of parameters for the first node to generate a reference signal sequence in the first mode; A second set of parameters for the first node to generate a reference signal sequence in the second mode.

11. The method of claim 10, wherein, The first set of parameters comprises one or more of the following parameters: a number of PRBs occupied by a reference signal, a transmission Comb configuration, a number of OFDM symbols occupied by a reference signal, a number of antenna ports of a reference signal, a phase cyclic shift parameter of a reference signal, a root sequence number of a ZC sequence used for generating a reference signal, and indication information, wherein the indication information is used to indicate whether the reference signal sequence needs to be subjected to DFT transformation before being transmitted or does not need to be subjected to DFT transformation.

12. The method of claim 10, wherein, The second set of parameters comprises one or more of the following parameters: a number of PRBs occupied by a reference signal, a transmission Comb configuration, a number of OFDM symbols occupied by a reference signal, a number of antenna ports of a reference signal, and a root sequence number of a ZC sequence used for generating a reference signal corresponding to a starting antenna port.

13. A communications device, characterized by Applied to a first node, the apparatus comprises: A processing unit configured to generate a reference signal sequence in a first mode or generate a reference signal sequence in a second mode; the first mode comprises: generating a base sequence based on a ZC sequence, taking the base sequence as a reference signal sequence, or performing discrete Fourier transform (DFT) transformation on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the root sequence length, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence; the second mode comprises: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the root sequence length, and the reference signal sequence does not have a phase cyclic shift relative to the ZC sequence; A first communication unit configured to transmit the reference signal sequence.

14. A communications device, characterized by Applied to a second node, the apparatus comprises: A second communication unit configured to receive a reference signal sequence transmitted by a first node, wherein the reference signal sequence is generated in a first mode or generated in a second mode; The first mode comprises: generating a base sequence based on a ZC sequence, taking the base sequence as a reference signal sequence, or performing a discrete Fourier transform (DFT) on the base sequence to obtain a reference signal sequence; wherein the length of the reference signal sequence is greater than the root sequence length, and the reference signal sequence has a phase cyclic shift relative to the ZC sequence. The second mode comprises: generating a reference signal sequence based on a ZC sequence; wherein the length of the reference signal sequence is equal to the root sequence length, and the reference signal sequence has no phase cyclic shift relative to the ZC sequence.

15. A communication device, characterized by Comprise: A processor and a memory for storing a computer program, the processor being configured to invoke and run the computer program stored in the memory to execute the method of any one of claims 1 to 12.

16. A computer readable storage medium characterized by: A computer program for storing, the computer program causing a computer to execute the method of any one of claims 1 to 12.

17. A computer program product, characterised in that, Computer program instructions for causing a computer to execute the method of any one of claims 1 to 12.

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