SRS (Sounding Reference Signal) transmission method and device and communication equipment

Abstract

The invention discloses an SRS (Sounding Reference Signal) transmission method and device and communication equipment, and belongs to the technical field of communication, and the method comprises the steps that a terminal obtains N SRS resource sets configured by network side equipment and used for uplink transmission, and N is greater than or equal to 1; the terminal determines pre-codes of M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, and M is greater than or equal to 1; and the terminal sends the M SRSs according to the precoding.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method, apparatus, and communication device for transmitting a sounding reference signal (SRS). Background Art

[0002] Currently, a network-side device configures a resource set of sounding reference signals (SRSs) for uplink transmission for a terminal, and each resource set includes at least one SRS resource.

[0003] Among them, in a codebook-based uplink transmission scheme, the terminal sends SRSs according to at least one configured SRS resource. The network-side device obtains the uplink channel by receiving the SRSs, and based on this, determines the beam, precoding matrix, modulation and coding scheme (MCS), etc. for transmitting the physical uplink shared channel (PUSCH) of the terminal's uplink data bearer channel, and notifies the terminal through the downlink control information (DCI) for scheduling the PUSCH. In this way, after receiving the DCI for scheduling the PUSCH, the terminal selects a precoding matrix for PUSCH transmission from a predefined codebook according to the transmit precoding index and the transmit layer indication field in the DCI, which can also be simply referred to as the (Transmit precoding matrix indicator, TPMI) field, and then precodes the uplink data according to the indicated TPMI and maps it onto the PUSCH resources for transmission.

[0004] In a non-codebook-based uplink transmission scheme, the terminal detects the non-zero power channel state information-reference signal (NZP CSI-RS) sent by the network-side device on the NZP CSI-RS resources configured by the network side to obtain the downlink channel state information; thus, according to channel reciprocity, the downlink channel information is approximately equivalently regarded as the uplink channel information; and then, according to the uplink channel information, a candidate precoding matrix for uplink transmission is calculated to precode and send the SRS; in this way, the network-side device can further determine the precoding matrix used for transmitting the uplink data bearer channel according to the measured precoded SRS, and notify the terminal through the DCI for scheduling the PUSCH.

[0005] It can be seen from this that in the related art, whether it is a codebook-based uplink transmission scheme or a non-codebook-based uplink transmission scheme, the network-side device configures an SRS resource set for the terminal, and single-antenna panel transmission is achieved. Among them, in order to improve uplink transmission performance, uplink coherent transmission can be performed. However, the above-mentioned SRS transmission method is not applicable to uplink coherent transmission. Summary of the Invention

[0006] An embodiment of the present application provides a method, apparatus, and communication device for transmitting a sounding reference signal (SRS), which solves the problem that the SRS transmission in the related art is not applicable to uplink coherent transmission.

[0007] In a first aspect, a method for transmitting a sounding reference signal (SRS) is provided. The method includes:

[0008] The terminal obtains N SRS resource sets configured by the network-side device for uplink transmission, where N is greater than or equal to 1;

[0009] The terminal determines precoding for M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, where M is greater than or equal to 1;

[0010] The terminal transmits the M SRSs according to the precoding.

[0011] In a second aspect, a method for transmitting a sounding reference signal (SRS) is provided. The method includes:

[0012] The network-side device configures N SRS resource sets for the terminal for uplink transmission, where N is greater than or equal to 1;

[0013] The network-side device receives M SRSs transmitted by the terminal according to precoding, where the precoding is determined according to the reference signals associated with the N SRS resource sets for uplink transmission, and M is greater than or equal to 1.

[0014] In a third aspect, a method for transmitting a sounding reference signal (SRS) is provided. The method includes:

[0015] The terminal obtains parameter information of a codebook subset configured by the network-side device;

[0016] The terminal determines precoding for the SRS according to the parameter information of the codebook subset;

[0017] The terminal transmits the SRS based on the precoding.

[0018] In a fourth aspect, a method for transmitting a sounding reference signal (SRS) is provided. The method includes:

[0019] The network-side device sends parameter information of a codebook subset to the terminal;

[0020] The network-side device receives the SRS sent by the terminal according to precoding, where the precoding is determined according to the parameter information of the codebook subset.

[0021] In a fifth aspect, a monitoring reference signal SRS transmission device is provided, which is applied to a terminal. The device includes:

[0022] A first obtaining module, configured to obtain N SRS resource sets for uplink transmission configured by a network-side device, where N is greater than or equal to 1;

[0023] A first determining module, configured to determine precoding for M SRS according to the reference signals associated with the N SRS resource sets for uplink transmission, where M is greater than or equal to 1;

[0024] A first sending module, configured to send the M SRS according to the precoding.

[0025] In a sixth aspect, a monitoring reference signal SRS transmission device is provided, which is applied to a network-side device. The device includes:

[0026] A first configuration module, configured to configure N SRS resource sets for uplink transmission for a terminal, where N is greater than or equal to 1;

[0027] A first receiving module, configured to receive M SRS sent by the terminal according to precoding, where the precoding is determined according to the reference signals associated with the N SRS resource sets for uplink transmission, and M is greater than or equal to 1.

[0028] In a seventh aspect, a monitoring reference signal SRS transmission device is provided, which is applied to a terminal. The device includes:

[0029] A second obtaining module, configured to obtain the parameter information of the codebook subset configured by the network-side device;

[0030] A second determining module, configured to determine the precoding of the SRS according to the parameter information of the codebook subset;

[0031] A second sending module, configured to send the SRS based on the precoding.

[0032] In an eighth aspect, a monitoring reference signal SRS transmission device is provided, which is applied to a network-side device. The device includes:

[0033] A third sending module, configured to send the parameter information of the codebook subset to the terminal;

[0034] A second receiving module, configured to receive the SRS sent by the terminal according to precoding, where the precoding is determined according to the parameter information of the codebook subset.

[0035] In a ninth aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0036] In a tenth aspect, a terminal is provided, including a processor and a communication interface;

[0037] The communication interface is configured to: obtain N sets of SRS resources for uplink transmission configured by a network-side device, where N is greater than or equal to 1;

[0038] The processor is configured to: determine precoding for M SRSs according to the reference signals associated with the N sets of SRS resources for uplink transmission, where M is greater than or equal to 1;

[0039] The communication interface is configured to: send the M SRSs according to the precoding;

[0040] Or,

[0041] The communication interface is configured to: obtain parameter information of a codebook subset configured by a network-side device;

[0042] The processor is configured to: determine precoding for SRS according to the parameter information of the codebook subset;

[0043] The communication interface is configured to: send SRS based on the precoding.

[0044] In an eleventh aspect, a network-side device is provided, which includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the second aspect or the fourth aspect are implemented.

[0045] In a twelfth aspect, a network-side device is provided, including a processor and a communication interface;

[0046] The communication interface is configured to:

[0047] Configure N sets of SRS resources for uplink transmission for a terminal, where N is greater than or equal to 1;

[0048] The network-side device receives M SRSs sent by the terminal according to precoding, where the precoding is determined according to the reference signals associated with the N sets of SRS resources for uplink transmission, and M is greater than or equal to 1;

[0049] Or,

[0050] The communication interface is configured to:

[0051] Send parameter information of a codebook subset to a terminal;

[0052] Receive the sounding reference signal (SRS) sent by the terminal according to precoding, where the precoding is determined according to the parameter information of the codebook subset.

[0053] In a thirteenth aspect, a readable storage medium is provided, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect or the second aspect or the third aspect or the fourth aspect are implemented.

[0054] In a fourteenth aspect, a sounding reference signal (SRS) transmission system is provided, including: a terminal and a network-side device, where the terminal can be used to execute the steps of the method described in the first aspect or the third aspect, and the network-side device can be used to execute the steps of the method described in the second aspect or the fourth aspect.

[0055] In a fifteenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method described in the first aspect or the second aspect or the third aspect or the fourth aspect.

[0056] In a sixteenth aspect, a computer program / program product is provided, the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the second aspect or the third aspect or the fourth aspect.

[0057] In the embodiments of the present application, the terminal can obtain N SRS resource sets configured by the network-side device for uplink transmission, and thus determine the precoding of M SRS according to the reference signals associated with the N SRS resource sets for uplink transmission, and then send M SRS according to the determined precoding, where N is greater than or equal to 1, and M is greater than or equal to 1. That is, in the embodiments of the present application, the network-side device can configure at least one SRS resource set for the terminal. In this way, based on the reference signals associated with the at least one SRS resource set, the precoding of at least one SRS can be determined, and then multiple SRS can be sent based on this precoding. In this case, the network-side device can determine the precoding of multiple uplink transmissions to be coherent based on the multiple SRS sent by the terminal, so that uplink coherent transmission can be achieved. Therefore, the embodiments of the present application provide an SRS transmission method applicable to the uplink coherent transmission scenario. Description of the Drawings

[0058] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0059] Figure 2 is a flowchart of a sounding reference signal (SRS) transmission method in the embodiments of the present application;

[0060] Figure 3 It is a flowchart of another method for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0061] Figure 4 It is a block diagram of a structure of a device for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0062] Figure 5 It is a block diagram of a structure of another device for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0063] Figure 6 It is a flowchart of a method for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0064] Figure 7 It is a flowchart of another method for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0065] Figure 8 It is a block diagram of a structure of a device for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0066] Figure 9 It is a block diagram of a structure of another device for transmitting sounding reference signal (SRS) in an embodiment of the present application;

[0067] Figure 10 It is a block diagram of a structure of a communication device in an embodiment of the present application;

[0068] Figure 11 It is a block diagram of a structure of a terminal in an embodiment of the present application;

[0069] Figure 12 It is a block diagram of a structure of a network - side device in an embodiment of the present application. Detailed implementation manners

[0070] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are a part rather than all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application fall within the scope of protection of the present application.

[0071] The terms "first", "second", etc. in this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same kind, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in this application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0072] The term "indication" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information based on the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0073] It is worth pointing out that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses NR terms in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th generation (6 thGeneration, 6G) communication system.

[0074] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc., which are terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0075] To facilitate the understanding of the transmission of the sounding reference signal SRS in the embodiments of this application, the following related technologies will be introduced first:

[0076] 1. In the codebook-based uplink transmission scheme, an example of the indication in the TPMI field is shown in Table 1:

[0077] Table 1 Example of the indication in the TPMI field

[0078]

[0079] 2. In the non-codebook-based transmission scheme, the SRS Resource Indicator (SRI) field of the DCI selects a subset (i.e., SRI group) of SRS resource indices from a predefined SRI index table to notify the UE of the precoding matrix used for the precoding of the PUSCH. The indication is shown in Table 2.

[0080] Table 2 SRI indication for non-codebook-based PUSCH transmission

[0081]

[0082] Next, in combination with the accompanying drawings, the method for transmitting the sounding reference signal SRS provided in the embodiments of this application will be described in detail through some embodiments and their application scenarios.

[0083] Embodiments of the present application provide a method for transmitting sounding reference signals (SRS), as Figure 2 shown, the method may include the following steps 201 to 203:

[0084] Step 201: The terminal obtains N SRS resource sets configured by the network side device for uplink transmission.

[0085] Wherein, N is greater than or equal to 1.

[0086] In addition, it should be noted that the N SRS resource sets for uplink transmission may be the SRS resource sets in the foregoing codebook-based uplink transmission scheme, or may be the SRS resource sets in the foregoing non-codebook-based transmission scheme.

[0087] Step 202: The terminal determines the precoding of M SRS according to the reference signals associated with the N SRS resource sets for uplink transmission.

[0088] Wherein, M is greater than or equal to 1.

[0089] It should be noted that one or more SRS may be configured in one SRS resource set. Therefore, the number N of SRS resource sets configured by the network side device for the terminal may be equal to or different from the number M of SRS transmitted by the terminal.

[0090] In addition, among the N SRS resource sets for uplink transmission, some SRS resource sets may have associated reference signals, or all SRS resource sets may have associated reference signals; the reference signals associated with different SRS resource sets may be the same or different. For example, the N SRS resource sets are associated with the same first reference signal, or the N SRS resource sets may be respectively associated with a second reference signal. Exemplarily, the reference signals associated with the N SRS resource sets may be CSI-RS.

[0091] Optionally, in step 202, the terminal determines the precoding of the M SRS according to the reference signals associated with the N SRS resource sets for uplink transmission, including the following step A-1 or step A-2:

[0092] Step A-1: The terminal determines the precoding of the M SRS according to the first reference signal, where the first reference signal is one of the reference signals associated with the N SRS resource sets for uplink transmission;

[0093] Step A-2: The terminal determines the precoding of the SRS of the i-th SRS resource set according to the second reference signal associated with the i-th SRS resource set, where i is an integer from 1 to N.

[0094] Among them, the SRS of the i-th SRS resource set refers to the SRS configured in the i-th SRS resource set.

[0095] As can be seen from the above, M SRSs can use one precoding (that is, M SRSs use one large precoding, rather than each of the M SRSs using the same small precoding). In this way, whether the N SRS resource sets are associated with the same reference signal or are respectively associated with a reference signal, one of the reference signals can be selected to determine the precoding of the M SRSs; or, if the N SRS resource sets for uplink transmission are respectively associated with a second reference signal, then each SRS resource set can calculate a corresponding precoding, so that all SRSs of each SRS resource set (that is, all SRSs used for transmission by each SRS resource set) use one precoding.

[0096] Among them, in step A-1, the precoding of the M SRSs is calculated based on the first reference signal. In this way, the N SRS resource sets correspond to coherent transmission, and further, the PUSCH can achieve coherent transmission, thereby improving the uplink transmission performance.

[0097] In addition, in step A-2, when the N SRS resource sets are associated with different second reference signals, according to the different second reference signals, the corresponding precoding of each SRS resource set is obtained respectively. In this case, the network side device can calculate the coherent precoding of the uplink transmission based on the precoding corresponding to each SRS resource set, so as to achieve coherent transmission of the uplink, and further improve the uplink transmission performance.

[0098] Optionally, the first reference signal is the reference signal associated with the target SRS resource set;

[0099] Among them, the target SRS resource set is one of the following:

[0100] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0101] Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index;

[0102] Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0103] Step 203: The terminal sends the M SRSs according to the precoding.

[0104] After the terminal determines the precoding of M SRSs, it performs precoding on the M SRSs according to the precoding and then sends them; after receiving the M SRSs, the network device can determine the precoding for N uplink transmissions to be coherent based on the M SRSs, and thus uplink coherent transmission can be achieved.

[0105] As can be seen from the above steps 201 to 203, in the embodiments of the present application, the network device can configure at least one SRS resource set for the terminal. In this way, based on the reference signals associated with the at least one SRS resource set, the precoding of at least one SRS can be determined, and then multiple SRSs can be sent based on this precoding. In this case, the network device can determine the precoding for multiple uplink transmissions to be coherent based on the multiple SRSs sent by the terminal, thereby enabling uplink coherent transmission. Therefore, the embodiments of the present application provide an SRS transmission method applicable to the uplink coherent transmission scenario.

[0106] Optionally, in the above step 202, when the terminal determines the precoding of M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, it includes:

[0107] When the terminal determines that the network device supports the target transmission scheme, the terminal determines the precoding of M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission;

[0108] Among them, in one of the following items B-1 to B-4, the terminal determines that the network device supports the target transmission scheme:

[0109] Item B-1: The terminal receives a preset signaling; that is, the preset signaling enables the target transmission scheme;

[0110] Among them, the preset signaling can be an RRC signaling;

[0111] Item B-2: The terminal receives a first signaling, and the first signaling is used to activate N SRS resource sets for uplink transmission; that is, when the terminal receives the first signaling, it indicates that the target transmission scheme is enabled;

[0112] Among them, the first signaling can be a network-side signaling;

[0113] Item B-3: The SRS resources for uplink transmission meet the first condition, that is, when the SRS resources for uplink transmission meet the first condition, the target transmission scheme is enabled;

[0114] Optionally, the first condition includes that the SRS resources for uplink transmission are on the same frequency domain unit; wherein, the frequency domain unit may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol;

[0115] Item B-4: The set of SRS resources for uplink transmission satisfies a second condition, that is, when the set of SRS resources for uplink transmission satisfies the second condition, the target transmission scheme is enabled;

[0116] Optionally, the second condition includes that the SRS resources in the set of SRS resources for uplink transmission are on the same frequency domain unit; wherein, the frequency domain unit may be an OFDM symbol.

[0117] Optionally, the method further includes:

[0118] The terminal obtains parameter information of a codebook subset configured by the network side device;

[0119] In the above step A-1, the terminal determines the precoding of the M SRSs according to the first reference signal, including:

[0120] In the case where the parameter information of the codebook subset indicates one codebook subset, the terminal determines the precoding of the M SRSs from the corresponding precodings of the one codebook subset according to the first reference signal;

[0121] In the above step A-2, the terminal determines the precoding of the SRSs of the i-th SRS resource set according to the second reference signal associated with the i-th SRS resource set, including:

[0122] In the case where the parameter information of the codebook subset indicates N codebook subsets, the terminal determines the precoding of the SRSs of the i-th SRS resource set from the corresponding precodings of the i-th codebook subset among the N codebook subsets according to the second reference signal associated with the i-th SRS resource set.

[0123] As described above, in the current non-codebook transmission scheme, the terminal calculates the SRS precoding matrix according to the uplink channel information. Among them, in the process of calculating the SRS, different terminals use different algorithms, but the directions corresponding to the precoding matrices that may be calculated are relatively close. Such terminals have relatively close transmission directions to the network-side device and interfere with each other greatly, so it is difficult to perform pairing, that is, it is difficult to perform multi-user scheduling for these terminals. In the embodiments of the present application, the network-side device can also configure a codebook subset for each terminal respectively, so that the terminal determines the precoding of the SRS according to its own codebook subset. In this way, the directions corresponding to the precodings of the SRS determined by different terminals based on different codebook subsets can be kept at a relatively long distance, thereby reducing interference and facilitating pairing, that is, facilitating multi-user scheduling.

[0124] As can be seen from the above, the network-side device can configure a codebook subset for one terminal. In this way, the terminal only needs to determine the precodings of M SRS according to this codebook subset (that is, according to the above first reference signal, determine the precodings of M SRS from the corresponding precodings of this codebook subset);

[0125] Alternatively, the network-side device can also configure N codebook subsets for one terminal. In this way, the terminal only needs to determine the precoding of the SRS of the i-th SRS resource set according to the i-th codebook subset (that is, according to the second reference signal associated with the i-th SRS resource set, determine the precoding of the SRS of the i-th SRS resource set from the corresponding precodings of the i-th codebook subset). Optionally, the parameter information of the codebook subset includes at least one of the following:

[0126] Discrete Fourier Transform (DFT) vector grouping;

[0127] The basis vector of the Householder transformation.

[0128] Optionally, the parameter information of the codebook subset is indicated by at least one of the following C-1 to C-3:

[0129] Item C-1: Radio Resource Control (RRC) signaling;

[0130] Item C-2: Media Access Control Control Element (MACCE);

[0131] Item C-3: Downlink Control Information (DCI).

[0132] It can be seen therefrom that the parameter information of the codebook subset can be indicated by at least one of RRC signaling, MAC CE, and DCI.

[0133] Among them, the network side device can indicate the codebook subsets of multiple terminals in DCI.

[0134] Optionally, before the terminal obtains the parameter information of the codebook subset configured by the network side device, the method further includes:

[0135] The terminal reports the capability information of the terminal to the network side device;

[0136] Among them, the parameter information of the codebook subset is determined according to the capability information.

[0137] It can be seen therefrom that the terminal can also report its capability information to the network side device, so that the network side device can configure a suitable codebook subset based on the capability information of the terminal.

[0138] Optionally, the capability information includes at least one of the following D-1 to D-3:

[0139] Item D-1: Whether the terminal supports the network side device to configure the codebook subset;

[0140] Item D-2: The number of ports supported by the terminal (i.e., the number of available transmit-receive units (TXRUs));

[0141] Item D-3: The antenna layout information of the terminal.

[0142] It can be seen therefrom that the terminal can report to the network side device at least one of whether it supports the network side device to configure the codebook subset, the number of supported ports, and the antenna layout, so that the network side device can configure a suitable codebook subset based on at least one of whether the terminal supports the network side device to configure the codebook subset, the number of ports supported by the terminal, and the antenna layout of the terminal.

[0143] Optionally, before the terminal transmits the M SRSs according to the precoding, the method further includes:

[0144] The terminal determines the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission;

[0145] The terminal transmits the M SRSs according to the precoding, including:

[0146] The terminal transmits the M SRSs according to the precoding and the transmission power.

[0147] It can be seen from this that if the network - side device configures N SRS resource sets for the terminal, the terminal can further determine the transmission power of M SRSs based on the N SRS resource sets, and then transmit the M SRSs based on the transmission power and the precoding determined according to the reference signals associated with the N SRS resource sets in the foregoing text.

[0148] Optionally, the terminal determines the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission, including:

[0149] The terminal determines a target SRS resource set and determines the transmission power of the target SRS resource set as the transmission power of the M SRSs (that is, the transmission power of the M SRSs is the same as the transmission power of the target SRS resource set);

[0150] Wherein, the target SRS resource set is one of the following E - 1 to E - 3:

[0151] Item E - 1: Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0152] It can be seen from item E - 1 that the transmission power of the M SRSs can be the minimum transmission power among the N SRS resource sets;

[0153] Item E - 2: Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index;

[0154] It can be seen from item E - 2 that the transmission power of the M SRSs can be the transmission power of the SRS resource set with the smallest index among the N SRS resource sets;

[0155] Item E - 3: Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0156] It can be seen from item E - 3 that the transmission power of the M SRSs can be the transmission power of the first SRS resource set among the N SRS resource sets.

[0157] Optionally, the terminal determines the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission, including:

[0158] The terminal determines a target path - loss reference signal and determines the path loss of the M SRSs according to the target path - loss reference signal;

[0159] The terminal determines the transmission power of the M SRSs according to the path loss of the M SRSs;

[0160] Wherein, the target path loss reference signal is determined according to the path loss with the minimum loss among the N paths corresponding to the N SRS resource sets for uplink transmission.

[0161] It should be noted that one SRS resource set corresponds to one path, and there is one path loss (i.e., path loss) for one path.

[0162] From this, it can be known that the transmission power of M SRSs can also be determined according to the minimum path loss among the N paths corresponding to the N SRS resource sets.

[0163] Optionally, the method further includes:

[0164] The terminal receives the uplink transmission parameters sent by the network side device according to the received M SRSs;

[0165] Wherein, the uplink transmission parameters include at least one of first indication information and second indication information;

[0166] The first indication information is used to indicate the precoding of uplink transmission;

[0167] The second indication information is used to indicate the beam of uplink transmission.

[0168] From this, it can be known that through the above step 203, after the terminal sends M SRSs, the network side device can determine the uplink transmission parameters according to the received M SRSs, so as to indicate at least one of the precoding and beam of uplink transmission to the terminal, so that the terminal can perform uplink transmission based on these uplink transmission parameters.

[0169] Optionally, the first indication information includes at least one of the following:

[0170] At least one SRS resource indication SRI;

[0171] At least one coherent phase.

[0172] Wherein, at least one of the at least one SRI and the at least one coherent phase can be carried in the DCI.

[0173] Optionally, the target transmission scheme is the coherent joint reception (CJR) of N transmit receive points (TRPs).

[0174] Exemplarily, when the network-side device supports CJR of N TRPs, the network-side device may configure N SRS resource sets for the terminal for uplink transmission, so that the terminal determines the precoding of M SRSs according to the reference signals associated with the N SRS resource sets, determines the transmission power of the M SRSs according to the N SRS resource sets, and then transmits the M SRSs according to the precoding and transmission power of the M SRSs.

[0175] An embodiment of the present application further provides a method for listening to the transmission of the reference signal SRS, as Figure 3 shown, the method may include the following steps 301 to 302:

[0176] Step 301: The network-side device configures N SRS resource sets for the terminal for uplink transmission.

[0177] Wherein, N is greater than or equal to 1.

[0178] In addition, it should be noted that the N SRS resource sets for uplink transmission may be the SRS resource sets in the foregoing codebook-based uplink transmission scheme or the SRS resource sets in the foregoing non-codebook-based transmission scheme.

[0179] Step 302: The network-side device receives the M SRSs sent by the terminal according to the precoding.

[0180] Wherein, the precoding is determined according to the reference signals associated with the N SRS resource sets for uplink transmission, and M is greater than or equal to 1.

[0181] In addition, among the N SRS resource sets for uplink transmission, some SRS resource sets may have associated reference signals, or all SRS resource sets may have associated reference signals; the reference signals associated with different SRS resource sets may be the same or different. For example, the N SRS resource sets are associated with the same first reference signal, or the N SRS resource sets may be respectively associated with a second reference signal. Exemplarily, the reference signals associated with the N SRS resource sets may be CSI-RS.

[0182] The precoding of the M SRSs may be the same. In this case, the precoding of the M SRSs may be determined according to the first reference signal, and the first reference signal is one of the reference signals associated with the N SRS resource sets; or, the precoding of the SRS of the i-th SRS resource set is determined according to the second reference signal associated with the i-th SRS resource set.

[0183] Optionally, the first reference signal is the reference signal associated with the target SRS resource set;

[0184] Wherein, the target SRS resource set is one of the following:

[0185] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0186] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum index;

[0187] Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0188] In addition, after the terminal determines the precoding of M SRSs, it performs precoding on the M SRSs according to the precoding and then sends them; after the network-side device receives the M SRSs, it can determine the precoding for N uplink transmissions to be coherent based on the M SRSs, and thus uplink coherent transmission can be achieved.

[0189] As can be seen from the above steps 301 to 302, in the embodiments of the present application, the network-side device can configure at least one SRS resource set for the terminal. In this way, based on the reference signals associated with the at least one SRS resource set, the precoding of at least one SRS can be determined, and then multiple SRSs can be sent based on the precoding. In this case, the network-side device can determine the precoding for multiple uplink transmissions to be coherent based on the multiple SRSs sent by the terminal, thereby achieving uplink coherent transmission. Therefore, the embodiments of the present application provide an SRS transmission method applicable to the uplink coherent transmission scenario.

[0190] Optionally, the method further includes:

[0191] The network-side device configures parameter information of a codebook subset for the terminal, and the parameter information of the codebook subset indicates at least one codebook subset.

[0192] It should be noted that in the current non-codebook transmission scheme, the terminal calculates the SRS precoding matrix according to the uplink channel information. Among them, in the process of calculating the SRS, different terminals use different algorithms, but the directions corresponding to the precoding matrices calculated may be relatively close. Such terminals have relatively close transmission directions with the network-side device and interfere with each other greatly, so it is difficult to pair them, that is, it is difficult to perform multi-user scheduling for these terminals. In the embodiments of the present application, the network-side device can also configure a codebook subset for each terminal respectively, so that the terminal determines the precoding of the SRS according to its own codebook subset. In this way, the directions corresponding to the precodings of the SRSs determined by different terminals based on different codebook subsets can be kept at a relatively long distance, thereby reducing interference and facilitating pairing, that is, facilitating multi-user scheduling.

[0193] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0194] Discrete Fourier transform vector grouping;

[0195] Basis vectors of the reflection transformation.

[0196] Optionally, the parameter information of the codebook subset is indicated by at least one of the following C-1 to C-3:

[0197] Item C-1: Radio Resource Control (RRC) signaling;

[0198] Item C-2: Media Access Control Control Element (MAC CE);

[0199] Item C-3: Downlink Control Information (DCI).

[0200] It can be seen therefrom that the parameter information of the codebook subset can be indicated by at least one of RRC signaling, MAC CE, and DCI.

[0201] Among them, the network-side device can indicate the codebook subsets of multiple terminals in the DCI.

[0202] Optionally, before the network-side device configures the parameter information of the codebook subset for the terminal, the method further includes:

[0203] The network-side device receives the capability information of the terminal reported by the terminal;

[0204] Among them, the parameter information of the codebook subset is determined according to the capability information.

[0205] It can be seen therefrom that the terminal can also report its capability information to the network-side device, so that the network-side device can configure a suitable codebook subset based on the capability information of the terminal.

[0206] Optionally, the capability information includes at least one of the following D-1 to D-3:

[0207] Item D-1: Whether the terminal supports the network-side device to configure the codebook subset;

[0208] Item D-2: The number of ports supported by the terminal (i.e., the number of available Transmit / Receive Units (TXRUs));

[0209] Item D-3: The antenna layout information of the terminal.

[0210] It can be seen from this that the terminal can report to the network-side device whether it supports the network-side device to configure a codebook subset, the number of supported ports, and at least one of the antenna layouts, so that the network-side device can configure an appropriate codebook subset for the terminal based on at least one of whether the terminal supports the network-side device to configure a codebook subset, the number of ports supported by the terminal, and the antenna layout of the terminal.

[0211] For the SRS transmission method provided by the embodiments of this application, the execution subject can be an SRS transmission device for listening. In the embodiments of this application, taking the SRS transmission device for listening to execute the SRS transmission method as an example, the SRS transmission device for listening provided by the embodiments of this application is described.

[0212] Embodiments of this application also provide an SRS transmission device for listening, which is applied to a terminal, such as Figure 4 shown. The SRS transmission device 40 for listening includes the following modules:

[0213] A first acquisition module 401, configured to acquire N SRS resource sets for uplink transmission configured by the network-side device, where N is greater than or equal to 1;

[0214] A first determination module 402, configured to determine precoding of M SRS according to the reference signals associated with the N SRS resource sets for uplink transmission, where M is greater than or equal to 1;

[0215] A first transmission module 403, configured to transmit the M SRS according to the precoding.

[0216] Optionally, the first determination module 402 is specifically configured to:

[0217] When it is determined that the network-side device supports the target transmission scheme, determine the precoding of M SRS according to the reference signals associated with the N SRS resource sets for uplink transmission;

[0218] Wherein, in one of the following cases, it is determined that the network-side device supports the target transmission scheme:

[0219] A preset signaling is received;

[0220] A first signaling is received, and the first signaling is used to activate N SRS resource sets for uplink transmission;

[0221] The SRS resources for uplink transmission satisfy the first condition;

[0222] The SRS resource sets for uplink transmission satisfy the second condition.

[0223] Optionally, the first condition includes that the SRS resources for uplink transmission are on the same frequency domain unit;

[0224] The second condition includes that the SRS resources in the SRS resource set for uplink transmission are on the same frequency domain unit.

[0225] Optionally, the first determination module 402 is specifically configured to:

[0226] Determine the precoding of the M SRSs according to a first reference signal, where the first reference signal is one of the reference signals associated with the N SRS resource sets for uplink transmission;

[0227] Or,

[0228] Determine the precoding of the SRSs in the i-th SRS resource set according to a second reference signal associated with the i-th SRS resource set, where i is an integer from 1 to N.

[0229] Optionally, the first reference signal is the reference signal associated with the target SRS resource set;

[0230] Wherein, the target SRS resource set is one of the following:

[0231] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0232] Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index;

[0233] Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0234] Optionally, the device further includes:

[0235] A third acquisition module, configured to acquire parameter information of a codebook subset configured by a network-side device;

[0236] When the first determination module 402 determines the precoding of the M SRSs according to the first reference signal, it is specifically configured to:

[0237] In the case where the parameter information of the codebook subset indicates one codebook subset, determine the precoding of the M SRSs from the corresponding precodings of the one codebook subset according to the first reference signal;

[0238] When the first determination module 402 determines the precoding of the SRSs in the i-th SRS resource set according to the second reference signal associated with the i-th SRS resource set, it is specifically configured to:

[0239] When the parameter information of the codebook subset indicates N codebook subsets, determine the precoding of the SRS of the i-th SRS resource set from the precoding corresponding to the i-th codebook subset among the N codebook subsets according to the second reference signal associated with the i-th SRS resource set.

[0240] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0241] Discrete Fourier transform vector grouping;

[0242] Basis vectors of the reflection transform.

[0243] Optionally, the parameter information of the codebook subset is indicated by at least one of the following:

[0244] Radio Resource Control (RRC) signaling;

[0245] Medium Access Control Control Element (MAC CE);

[0246] Downlink Control Information (DCI).

[0247] Optionally, the device further includes:

[0248] A reporting module, configured to report the capability information of the terminal to the network-side device;

[0249] Wherein, the parameter information of the codebook subset is determined according to the capability information.

[0250] Optionally, the capability information includes at least one of the following:

[0251] Whether the terminal supports the network-side device to configure the codebook subset;

[0252] The number of ports supported by the terminal;

[0253] The antenna layout information of the terminal.

[0254] Optionally, the device further includes:

[0255] A third determination module, configured to determine the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission;

[0256] The first transmission module 403 is specifically configured to:

[0257] Transmit the M SRSs according to the precoding and the transmission power.

[0258] Optionally, the third determination module is specifically configured to:

[0259] Determine a target SRS resource set and determine the transmission power of the target SRS resource set as the transmission power of the M SRSs;

[0260] Wherein, the target SRS resource set is one of the following:

[0261] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0262] Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index;

[0263] Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0264] Optionally, the third determination module is specifically configured to:

[0265] Determine a target path loss reference signal and determine the path loss of the M SRSs according to the target path loss reference signal;

[0266] Determine the transmission power of the M SRSs according to the path loss of the M SRSs;

[0267] Wherein, the target path loss reference signal is determined according to the path loss with the minimum loss among the N paths corresponding to the N SRS resource sets for uplink transmission.

[0268] Optionally, the apparatus further includes:

[0269] A third receiving module, configured to receive uplink transmission parameters sent by the network side device according to the received M SRSs;

[0270] Wherein, the uplink transmission parameters include at least one of first indication information and second indication information;

[0271] The first indication information is used to indicate precoding for uplink transmission;

[0272] The second indication information is used to indicate the beam for uplink transmission.

[0273] Optionally, the first indication information includes at least one of the following:

[0274] At least one SRS resource indication SRI;

[0275] At least one coherent phase.

[0276] Optionally, the target transmission scheme is coherent joint reception CJR of N transmit-receive points TRPs.

[0277] The SRS transmission device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal; exemplarily, the terminal may include, but is not limited to, the types of the above-listed terminal 11, and the embodiments of the present application do not make specific limitations.

[0278] The SRS transmission device provided by the embodiments of the present application can implement Figure 2 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0279] The embodiments of the present application further provide an SRS transmission device, which is applied to a network-side device, such as Figure 5 as shown, the SRS transmission device 50 includes the following modules:

[0280] A first configuration module 501, configured to configure N SRS resource sets for uplink transmission for the terminal, where N is greater than or equal to 1;

[0281] A first receiving module 502, configured to receive M SRSs sent by the terminal according to precoding, where the precoding is determined according to the reference signals associated with the N SRS resource sets for uplink transmission, and M is greater than or equal to 1.

[0282] Optionally, the device further includes:

[0283] A second configuration module, configured to configure parameter information of a codebook subset for the terminal, where the parameter information of the codebook subset indicates at least one codebook subset.

[0284] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0285] Discrete Fourier transform vector groups;

[0286] Basis vectors of reflection transformation.

[0287] Optionally, the parameter information of the codebook subset is indicated by at least one of the following:

[0288] Radio Resource Control (RRC) signaling;

[0289] Media Access Control Control Element (MAC CE);

[0290] Downlink Control Information (DCI).

[0291] Optionally, the device further includes:

[0292] A fourth receiving module, configured to receive the capability information of the terminal reported by the terminal;

[0293] The parameter information of the codebook subset is determined according to the capability information.

[0294] Optionally, the capability information includes at least one of the following:

[0295] Whether the terminal supports the network side device configuration codebook subset;

[0296] The number of ports supported by the terminal;

[0297] Antenna layout information of the terminal.

[0298] The SRS transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network side device; illustratively, the network side device may include but is not limited to the types of network side devices 12 listed above, and the embodiment of the present application does not specifically limit this.

[0299] The monitoring reference signal SRS transmission device provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0300] In addition, as mentioned above, in the current non-codebook transmission scheme, the terminal calculates the precoding matrix of SRS based on the uplink channel information. In the process of calculating SRS, different terminals use different algorithms, but the directions corresponding to the precoding matrices calculated may be relatively close. Such terminals are close to the transmission directions of network-side devices, and the interference between them is large, making it difficult to pair them, that is, it is difficult to implement multi-user scheduling for these terminals. To address this problem, an embodiment of the present application provides a method for monitoring reference signal SRS transmission, such as Figure 6 As shown, the method may include the following steps 601 to 603:

[0301] Step 601: The terminal obtains parameter information of a codebook subset configured by a network side device.

[0302] Among them, the network side device can send parameter information of the codebook subset to the terminal through network signaling; that is, the codebook subset is indicated through the network signaling; in this way, after the terminal obtains the codebook subset, the precoding of the SRS (that is, the precoding matrix) can be determined according to the codebook subset.

[0303] Step 602: The terminal determines the precoding of the SRS according to the parameter information of the codebook subset.

[0304] Optionally, the terminal determines, according to the parameter information of the codebook subset, precoding of the SRS, including:

[0305] The terminal determines the precoding of the SRS from the precodings indicated by the parameter information of the codebook subset according to the uplink channel information.

[0306] It can be seen therefrom that the terminal can select a precoding that matches the uplink channel information from the precodings indicated by the parameter information of the codebook subset.

[0307] Step 603: The terminal sends the SRS based on the precoding.

[0308] It can be seen from Steps 601 to 603 that in the embodiment of the present application, the network-side device can configure a codebook subset for each terminal respectively, so that the terminal determines the precoding of the SRS according to its own codebook subset. In this way, the directions corresponding to the precodings of the SRS determined by different terminals based on different codebook subsets can maintain a relatively long distance, thereby reducing interference and facilitating pairing, that is, facilitating multi-user scheduling.

[0309] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0310] Discrete Fourier transform vector group;

[0311] Basis vectors of reflection transformation.

[0312] Optionally, the parameter information of the codebook subset is indicated by at least one of the following C-1 to C-3:

[0313] Item C-1: Radio Resource Control (RRC) signaling;

[0314] Item C-2: Media Access Control Control Element (MAC CE);

[0315] Item C-3: Downlink Control Information (DCI).

[0316] It can be seen therefrom that the parameter information of the codebook subset can be indicated by at least one of RRC signaling, MAC CE, and DCI.

[0317] Among them, the network-side device can indicate the codebook subsets of multiple terminals in the DCI.

[0318] Optionally, before the terminal obtains the parameter information of the codebook subset configured by the network-side device, the method further includes:

[0319] The terminal reports the capability information of the terminal to the network-side device;

[0320] Among them, the parameter information of the codebook subset is determined according to the capability information.

[0321] It can be seen from this that the terminal can also report its capability information to the network-side device, so that the network-side device can configure a suitable codebook subset for it based on the capability information of the terminal.

[0322] Optionally, the capability information includes at least one of the following D-1 to D-3:

[0323] Item D-1: Whether the terminal supports the network-side device to configure the codebook subset;

[0324] Item D-2: The number of ports supported by the terminal (i.e., the number of available transmit and receive units (TXRUs));

[0325] Item D-3: The antenna layout information of the terminal.

[0326] It can be seen from this that the terminal can report at least one of whether it supports the network-side device to configure the codebook subset, the number of supported ports, and the antenna layout to the network-side device, so that the network-side device can configure a suitable codebook subset for the terminal based on at least one of whether the terminal supports the network-side device to configure the codebook subset, the number of ports supported by the terminal, and the antenna layout of the terminal.

[0327] In summary, the embodiments of the present application provide a network-controllable non-codebook transmission scheme; and, considering the coherent reception capability of the network side, an uplink transmission scheme based on a multi-TRP transmission architecture for coherent reception is also proposed.

[0328] The embodiments of the present application also provide a method for transmitting a sounding reference signal (SRS), as Figure 7 shown, this method may include the following steps 701 to 702:

[0329] Step 701: The network-side device sends the parameter information of the codebook subset to the terminal.

[0330] Among them, the network-side device can send the parameter information of the codebook subset to the terminal through network signaling; that is, the codebook subset is indicated through this network signaling; in this way, after the terminal obtains the codebook subset, it can determine the precoding of the SRS (i.e., the precoding matrix) according to the codebook subset.

[0331] Step 702: The network-side device receives the SRS sent by the terminal according to the precoding.

[0332] Among them, the precoding is determined according to the parameter information of the codebook subset.

[0333] As can be seen from steps 701 to 702, in the embodiments of the present application, the network side device can configure codebook subsets for each terminal respectively, so that the terminal determines the precoding of the SRS according to its own codebook subset. In this way, the directions corresponding to the precodings of the SRS determined by different terminals based on different codebook subsets can maintain a relatively large distance, thereby reducing interference and facilitating pairing, that is, facilitating multi-user scheduling.

[0334] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0335] Discrete Fourier transform vector grouping;

[0336] Basis vectors of reflection transformation.

[0337] Optionally, the parameter information of the codebook subset is indicated by at least one of the following C-1 to C-3:

[0338] Item C-1: Radio Resource Control (RRC) signaling;

[0339] Item C-2: Media Access Control Control Element (MACCE);

[0340] Item C-3: Downlink Control Information (DCI).

[0341] It can be seen therefrom that the parameter information of the codebook subset can be indicated by at least one of RRC signaling, MAC CE, and DCI.

[0342] Among them, the network side device can indicate the codebook subsets of multiple terminals in DCI.

[0343] Optionally, before the network side device sends the parameter information of the codebook subset to the terminal, the method further includes:

[0344] The network side device receives the capability information of the terminal reported by the terminal;

[0345] Among them, the parameter information of the codebook subset is determined according to the capability information.

[0346] It can be seen therefrom that the terminal can also report its capability information to the network side device, so that the network side device can configure a suitable codebook subset based on the capability information of the terminal.

[0347] Optionally, the capability information includes at least one of the following D-1 to D-3:

[0348] Item D-1: Whether the terminal supports the codebook subset configured by the network-side device;

[0349] Item D-2: The number of ports supported by the terminal (i.e., the number of available transmit and receive units (TXRUs));

[0350] Item D-3: The antenna layout information of the terminal.

[0351] It can be seen therefrom that the terminal can report to the network-side device at least one of whether it supports the codebook subset configured by the network-side device, the number of supported ports, and the antenna layout, so that the network-side device can configure an appropriate codebook subset based on at least one of whether the terminal supports the codebook subset configured by the network-side device, the number of ports supported by the terminal, and the antenna layout of the terminal.

[0352] An embodiment of the present application further provides a sounding reference signal (SRS) transmission device, which is applied to a terminal. As Figure 8 shown, the SRS transmission device 80 includes the following modules:

[0353] A second acquisition module 801, configured to acquire parameter information of a codebook subset configured by a network-side device;

[0354] A second determination module 802, configured to determine the precoding of the SRS according to the parameter information of the codebook subset;

[0355] A second transmission module 803, configured to transmit the SRS based on the precoding.

[0356] Optionally, the second determination module 802 is specifically configured to:

[0357] Determine the precoding of the SRS from the precodings indicated by the parameter information of the codebook subset according to the uplink channel information.

[0358] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0359] Discrete Fourier transform vector groups;

[0360] Basis vectors of reflection transforms.

[0361] Optionally, the parameter information of the codebook subset is indicated by at least one of the following:

[0362] Radio resource control (RRC) signaling;

[0363] Media access control control element (MAC CE);

[0364] Downlink control information (DCI).

[0365] Optionally, the device further includes:

[0366] A reporting module, configured to report the capability information of the terminal to the network-side device;

[0367] Wherein, the parameter information of the codebook subset is determined according to the capability information.

[0368] Optionally, the capability information includes at least one of the following:

[0369] Whether the terminal supports the network-side device to configure the codebook subset;

[0370] The number of ports supported by the terminal;

[0371] The antenna layout information of the terminal.

[0372] The sounding reference signal (SRS) transmission device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal; exemplarily, the terminal may include, but is not limited to, the types of the above-mentioned terminal 11, and the embodiments of the present application do not make specific limitations.

[0373] The sounding reference signal (SRS) transmission device provided in the embodiments of the present application can implement Figure 6 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0374] The embodiments of the present application further provide a sounding reference signal (SRS) transmission device, which is applied to a network-side device. As Figure 9 shown, the sounding reference signal (SRS) transmission device 90 includes the following modules:

[0375] A third sending module 901, configured to send the parameter information of the codebook subset to the terminal;

[0376] A second receiving module 902, configured to receive the SRS sent by the terminal according to precoding, where the precoding is determined according to the parameter information of the codebook subset.

[0377] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0378] Discrete Fourier transform vector groups;

[0379] Basis vectors of reflection transformation.

[0380] Optionally, the parameter information of the codebook subset is indicated by at least one of the following:

[0381] Radio Resource Control (RRC) signaling;

[0382] Media Access Control Control Element (MAC CE);

[0383] Downlink control information DCI.

[0384] Optionally, the device further comprises:

[0385] A fourth receiving module, configured to receive capability information of the terminal reported by the terminal;

[0386] The parameter information of the codebook subset is determined according to the capability information.

[0387] Optionally, the capability information includes at least one of the following:

[0388] Whether the terminal supports the network side device configuration codebook subset;

[0389] The number of ports supported by the terminal;

[0390] Antenna layout information of the terminal.

[0391] The SRS transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network side device; illustratively, the network side device may include but is not limited to the types of network side devices 12 listed above, and the embodiment of the present application does not specifically limit this.

[0392] The monitoring reference signal SRS transmission device provided in the embodiment of the present application can achieve Figure 7 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0393] like Figure 10 As shown, the embodiment of the present application further provides a communication device 1000, including a processor 1001 and a memory 1002, and the memory 1002 stores a program or instruction that can be run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned embodiment of the monitoring reference signal SRS transmission method applied to the terminal, and can achieve the same technical effect. When the communication device 1000 is a network side device, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned embodiment of the monitoring reference signal SRS transmission method applied to the network side device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0394] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 2or the steps in the method embodiments shown in FIG. 3. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiments. Each implementation process and implementation manner of the above method embodiments can be applied to this terminal embodiment, and the same technical effects can be achieved. Specifically, Figure 11 FIG. 2 is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0395] The terminal 1100 includes, but is not limited to, at least some components such as a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110.

[0396] Those skilled in the art can understand that the terminal 1100 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 11 The terminal structure shown in FIG. 2 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0397] It should be understood that in the embodiments of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042. The graphics processor 11041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. The other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0398] In the embodiments of the present application, after the radio frequency unit 1101 receives downlink data from a network-side device, it can be transmitted to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Generally, the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0399] The memory 1109 can be used to store software programs or instructions as well as various data. The memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 may include volatile memory or non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0400] The processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1110 either.

[0401] In a first aspect, the radio frequency unit 1101 is used for: obtaining N sets of SRS resources for uplink transmission configured by a network-side device, where N is greater than or equal to 1;

[0402] The processor 1110 is used for: determining precoding of M SRSs according to the reference signals associated with the N sets of SRS resources for uplink transmission, where M is greater than or equal to 1;

[0403] The radio frequency unit 1101 is further configured to: transmit the M SRSs according to the precoding.

[0404] Optionally, the processor 1110 determines the precoding of the M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, including:

[0405] When it is determined that the network side device supports the target transmission scheme, determining the precoding of the M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission;

[0406] Wherein, in one of the following cases, it is determined that the network side device supports the target transmission scheme:

[0407] The radio frequency unit 1101 receives a preset signaling;

[0408] The radio frequency unit 1101 receives a first signaling, and the first signaling is used to activate N SRS resource sets for uplink transmission;

[0409] The SRS resources for uplink transmission satisfy a first condition;

[0410] The SRS resource sets for uplink transmission satisfy a second condition.

[0411] Optionally, the first condition includes that the SRS resources for uplink transmission are on the same frequency domain unit;

[0412] The second condition includes that the SRS resources in the SRS resource sets for uplink transmission are on the same frequency domain unit.

[0413] Optionally, the processor 1110 determines the precoding of the M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, including:

[0414] Determining the precoding of the M SRSs according to the first reference signal, where the first reference signal is one of the reference signals associated with the N SRS resource sets for uplink transmission;

[0415] Or,

[0416] Determining the precoding of the SRSs in the i-th SRS resource set according to the second reference signal associated with the i-th SRS resource set, where i is an integer from 1 to N.

[0417] Optionally, the first reference signal is the reference signal associated with the target SRS resource set;

[0418] Wherein, the target SRS resource set is one of the following:

[0419] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0420] Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index;

[0421] Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0422] Optionally, the radio frequency unit 1101 is further configured to: obtain parameter information of a codebook subset configured by the network side device;

[0423] The processor 1110 determines the precoding of the M SRSs according to the first reference signal, including:

[0424] In the case where the parameter information of the codebook subset indicates a codebook subset, determine the precoding of the M SRSs from the corresponding precodings of the one codebook subset according to the first reference signal;

[0425] The processor 1110 determines the precoding of the SRS of the i-th SRS resource set according to the second reference signal associated with the i-th SRS resource set, including:

[0426] In the case where the parameter information of the codebook subset indicates N codebook subsets, determine the precoding of the SRS of the i-th SRS resource set from the precoding corresponding to the i-th codebook subset among the N codebook subsets according to the second reference signal associated with the i-th SRS resource set.

[0427] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0428] Discrete Fourier transform vector group;

[0429] Basis vectors of reflection transformation.

[0430] Optionally, the parameter information of the codebook subset is indicated by at least one of the following:

[0431] Radio Resource Control (RRC) signaling;

[0432] Medium Access Control Control Element (MAC CE);

[0433] Downlink Control Information (DCI).

[0434] Optionally, the radio frequency unit 1101 is further configured to:

[0435] Report the capability information of the terminal to the network side device;

[0436] Wherein, the parameter information of the codebook subset is determined according to the capability information.

[0437] Optionally, the capability information includes at least one of the following:

[0438] Whether the terminal supports network-side device-configured codebook subsets;

[0439] The number of ports supported by the terminal;

[0440] The antenna layout information of the terminal.

[0441] Optionally, the processor 1110 is further configured to:

[0442] Determine the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission;

[0443] The radio frequency unit 1101 transmits the M SRSs according to the precoding, including:

[0444] Transmit the M SRSs according to the precoding and the transmission power.

[0445] Optionally, the processor 1110 determines the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission, including:

[0446] Determine a target SRS resource set, and determine the transmission power of the target SRS resource set as the transmission power of the M SRSs;

[0447] Wherein, the target SRS resource set is one of the following:

[0448] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power;

[0449] Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum index;

[0450] Among the N SRS resource sets for uplink transmission, the first SRS resource set.

[0451] Optionally, the processor 1110 determines the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission, including:

[0452] Determine a target path loss reference signal, and determine the path loss of the M SRSs according to the target path loss reference signal;

[0453] Determine the transmission power of the M SRSs according to the path loss of the M SRSs;

[0454] Wherein, the target path loss reference signal is determined according to the path loss with the minimum loss among the N paths corresponding to the N SRS resource sets for uplink transmission.

[0455] Optionally, the radio frequency unit 1101 is further configured to:

[0456] Receive the uplink transmission parameters sent by the network side device according to the received M SRSs;

[0457] Wherein, the uplink transmission parameters include at least one of first indication information and second indication information;

[0458] The first indication information is used to indicate the precoding of the uplink transmission;

[0459] The second indication information is used to indicate the beam of the uplink transmission.

[0460] Optionally, the first indication information includes at least one of the following:

[0461] At least one SRS resource indication SRI;

[0462] At least one coherent phase.

[0463] Optionally, the target transmission scheme is coherent joint reception CJR of N transmit-receive points TRP.

[0464] In a second aspect, the radio frequency unit 1101 is configured to: obtain parameter information of a codebook subset configured by a network side device;

[0465] The processor 1110 is configured to: determine the precoding of the SRS according to the parameter information of the codebook subset;

[0466] The radio frequency unit 1101 is further configured to: send the SRS based on the precoding.

[0467] Optionally, the processor 1110 determines the precoding of the SRS according to the parameter information of the codebook subset, including:

[0468] Determine the precoding of the SRS from the precodings indicated by the parameter information of the codebook subset according to the uplink channel information.

[0469] Optionally, the parameter information of the codebook subset includes at least one of the following:

[0470] Discrete Fourier transform vector group;

[0471] Basis vectors of the reflection transform.

[0472] Optionally, the parameter information of the codebook subset is indicated by at least one of the following:

[0473] Radio resource control RRC signaling;

[0474] Media access control control element MAC CE;

[0475] Downlink Control Information (DCI).

[0476] Optionally, the radio frequency unit 1101 is further configured to: report the capability information of the terminal to the network side device;

[0477] Wherein, the parameter information of the codebook subset is determined according to the capability information.

[0478] Optionally, the capability information includes at least one of the following:

[0479] Whether the terminal supports the network side device to configure the codebook subset;

[0480] The number of ports supported by the terminal;

[0481] The antenna layout information of the terminal.

[0482] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0483] The embodiment of the present application further provides a network side device, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement as Figure 3 or the steps of the method embodiment shown in 7. This embodiment of the network side device corresponds to the above-mentioned method embodiment of the network side device. The various implementation processes and implementation manners of the above method embodiment can all be applied to this embodiment of the network side device and can achieve the same technical effects.

[0484] Specifically, the embodiment of the present application further provides a network side device. As Figure 12 shown, the network side device 1200 includes: an antenna 121, a radio frequency device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to the radio frequency device 122. In the uplink direction, the radio frequency device 122 receives information through the antenna 121 and sends the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes the information to be sent and sends it to the radio frequency device 122. The radio frequency device 122 processes the received information and then sends it out through the antenna 121.

[0485] The method executed by the network side device in the above embodiments can be implemented in the baseband device 123, and the baseband device 123 includes a baseband processor.

[0486] The baseband device 123 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, such as Figure 12As shown, one of the chips, for example, is a baseband processor, which is connected to the memory 125 through a bus interface to call the program in the memory 125 and execute the network device operations shown in the above method embodiments.

[0487] The network-side device may further include a network interface 126, which is, for example, a Common Public Radio Interface (CPRI).

[0488] Specifically, the network-side device 1200 in the embodiments of the present invention further includes: instructions or programs stored on the memory 125 and executable on the processor 124. The processor 124 calls the instructions or programs in the memory 125 to execute Figure 5 or Figure 9 the methods executed by the modules shown, and achieves the same technical effects. To avoid repetition, they are not described here again.

[0489] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, they implement each process of the above method embodiments of the listening reference signal SRS transmission method and can achieve the same technical effects. To avoid repetition, they are not described here again.

[0490] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0491] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above method embodiments of the listening reference signal SRS transmission method and can achieve the same technical effects. To avoid repetition, they are not described here again.

[0492] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0493] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above method embodiments of the listening reference signal SRS transmission method and can achieve the same technical effects. To avoid repetition, they are not described here again.

[0494] The embodiment of the present application further provides a sounding reference signal (SRS) transmission system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the above-mentioned SRS transmission method applied to the terminal, and the network-side device can be used to execute the steps of the above-mentioned SRS transmission method applied to the network-side device.

[0495] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0496] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of computer software products plus a necessary general hardware platform, and of course, they can also be implemented by hardware. The computer software products are stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and include several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0497] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A method for transmitting sounding reference signal (SRS), characterized in that The method includes: The terminal obtains N SRS resource sets configured by the network-side device for uplink transmission, where N is greater than or equal to 1; The terminal determines precoding for M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, where M is greater than or equal to 1; The terminal sends the M SRSs according to the precoding.

2. The method according to claim 1, wherein The terminal determines precoding for M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, including: When the terminal determines that the network-side device supports the target transmission scheme, the terminal determines precoding for M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission; Wherein, in one of the following cases, the terminal determines that the network-side device supports the target transmission scheme: The terminal receives a preset signaling; The terminal receives a first signaling, and the first signaling is used to activate N SRS resource sets for uplink transmission; The SRS resources for uplink transmission satisfy a first condition; The SRS resource sets for uplink transmission satisfy a second condition; Wherein, the first condition includes that the SRS resources for uplink transmission are on the same frequency domain unit; The second condition includes that the SRS resources in the SRS resource sets for uplink transmission are on the same frequency domain unit.

3. The method according to claim 1 or 2, characterized in that The terminal determines precoding for the M SRSs according to the reference signals associated with the N SRS resource sets for uplink transmission, including: The terminal determines precoding for the M SRSs according to a first reference signal, and the first reference signal is one of the reference signals associated with the N SRS resource sets for uplink transmission; Or, The terminal determines precoding for the SRSs of the i-th SRS resource set according to a second reference signal associated with the i-th SRS resource set, where i is an integer from 1 to N.

4. The method according to claim 3, characterized in that The first reference signal is the reference signal associated with the target SRS resource set; Wherein, the target SRS resource set is one of the following: Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power; Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index; Among the N SRS resource sets for uplink transmission, the first SRS resource set.

5. The method according to claim 3 or 4, characterized in that, The method further includes: The terminal obtains parameter information of a codebook subset configured by the network-side device; The terminal determines precoding for the M SRSs according to the first reference signal, including: When the parameter information of the codebook subset indicates a codebook subset, the terminal determines precoding for the M SRSs from the corresponding precodings of the one codebook subset according to the first reference signal; The terminal determines precoding for the SRSs of the i-th SRS resource set according to a second reference signal associated with the i-th SRS resource set, including: When the parameter information of the codebook subset indicates N codebook subsets, the terminal determines the precoding of the SRS for the i-th SRS resource set from the precodings corresponding to the i-th codebook subset among the N codebook subsets according to the second reference signal associated with the i-th SRS resource set.

6. The method according to claim 5, characterized in that The parameter information of the codebook subset includes at least one of the following: Discrete Fourier transform vector grouping; Basis vectors of reflection transformation.

7. The method according to claim 5 or 6, characterized in that, Before the terminal obtains the parameter information of the codebook subset configured by the network-side device, the method further includes: The terminal reports the capability information of the terminal to the network-side device; Among them, the parameter information of the codebook subset is determined according to the capability information.

8. The method according to claim 7, wherein The capability information includes at least one of the following: Whether the terminal supports the network-side device to configure the codebook subset; The number of ports supported by the terminal; The antenna layout information of the terminal.

9. The method according to any one of claims 1 to 8, characterized in that, Before the terminal sends the M SRSs according to the precoding, the method further includes: The terminal determines the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission; The terminal sending the M SRSs according to the precoding includes: The terminal sends the M SRSs according to the precoding and the transmission power.

10. The method according to claim 9, wherein The terminal determining the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission includes: The terminal determines a target SRS resource set and determines the transmission power of the target SRS resource set as the transmission power of the M SRSs; Among them, the target SRS resource set is one of the following: Among the N SRS resource sets for uplink transmission, the SRS resource set with the minimum transmission power; Among the N SRS resource sets for uplink transmission, the SRS resource set with the smallest index; Among the N SRS resource sets for uplink transmission, the first SRS resource set.

11. The method according to claim 9, characterized in that The terminal determining the transmission power of the M SRSs according to the N SRS resource sets for uplink transmission includes: The terminal determines a target path loss reference signal and determines the path loss of the M SRSs according to the target path loss reference signal; The terminal determines the transmission power of the M SRSs according to the path loss of the M SRSs; Among them, the target path loss reference signal is determined according to the path loss with the minimum loss among the N paths corresponding to the N SRS resource sets for uplink transmission.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: The terminal receives the uplink transmission parameters sent by the network-side device according to the received M SRSs; Among them, the uplink transmission parameters include at least one of the first indication information and the second indication information; The first indication information is used to indicate the precoding of the uplink transmission; The second indication information is used to indicate the beam of the uplink transmission.

13. The method according to claim 12, wherein The first indication information includes at least one of the following: At least one SRS resource indication SRI; At least one coherent phase.

14. The method according to any one of claims 2 to 13, characterized in that, The target transmission scheme is the coherent joint reception CJR of N transmit-receive points TRP.

15. A method for transmitting sounding reference signal (SRS), characterized in that, The method includes: The network device configures N SRS resource sets for the terminal's uplink transmission, where N is greater than or equal to 1; The network device receives M SRSs sent by the terminal according to precoding, where the precoding is determined based on the reference signals associated with the N SRS resource sets for the terminal's uplink transmission, and M is greater than or equal to 1.

16. The method according to claim 15, wherein The method further includes: The network device configures parameter information of a codebook subset for the terminal, and the parameter information of the codebook subset indicates at least one codebook subset.

17. The method according to claim 16, characterized in that, The parameter information of the codebook subset includes at least one of the following: Discrete Fourier transform vector grouping; Basis vectors of reflection transformation.

18. The method according to any one of claims 15 to 17, characterized in that, Before the network device configures the parameter information of the codebook subset for the terminal, the method further includes: The network device receives the capability information of the terminal reported by the terminal; Wherein, the parameter information of the codebook subset is determined based on the capability information.

19. The method according to claim 18, characterized in that, The capability information includes at least one of the following: Whether the terminal supports the network device to configure a codebook subset; The number of ports supported by the terminal; The antenna layout information of the terminal.

20. A method for listening to the transmission of sounding reference signals (SRS), characterized in that, The method includes: The terminal obtains the parameter information of the codebook subset configured by the network device; The terminal determines the precoding of the SRS according to the parameter information of the codebook subset; The terminal sends the SRS based on the precoding.

21. The method according to claim 20, wherein The terminal determines the precoding of the SRS according to the parameter information of the codebook subset, including: The terminal determines the precoding of the SRS from the precodings indicated by the parameter information of the codebook subset according to the uplink channel information.

22. A method for transmitting a sounding reference signal (SRS), characterized in that, The method includes: The network device sends the parameter information of the codebook subset to the terminal; The network device receives the SRS sent by the terminal according to precoding, where the precoding is determined based on the parameter information of the codebook subset.

23. A sounding reference signal (SRS) transmission apparatus, characterized in that, Applied to the terminal, the apparatus includes: A first acquisition module, configured to acquire N SRS resource sets for the terminal's uplink transmission configured by the network device, where N is greater than or equal to 1; A first determination module, configured to determine the precoding of M SRSs according to the reference signals associated with the N SRS resource sets for the terminal's uplink transmission, where M is greater than or equal to 1; A first sending module, configured to send the M SRSs according to the precoding.

24. The device according to claim 23, characterized in that, The first determination module is specifically configured to: When it is determined that the network device supports the target transmission scheme, determine the precoding of M SRSs according to the reference signals associated with the N SRS resource sets for the terminal's uplink transmission; Wherein, in one of the following cases, it is determined that the network device supports the target transmission scheme: Receiving a preset signaling; Receiving a first signaling, where the first signaling is used to activate N SRS resource sets for the terminal's uplink transmission; The SRS resources for the terminal's uplink transmission satisfy the first condition; The SRS resource sets for the terminal's uplink transmission satisfy the second condition; Wherein, the first condition includes that the SRS resources for the terminal's uplink transmission are on the same frequency domain unit; The second condition includes that the SRS resources in the SRS resource sets for the terminal's uplink transmission are on the same frequency domain unit.

25. The device according to claim 23 or 24, characterized in that The first determination module is specifically configured to: Determine the precoding of the M SRSs according to a first reference signal, where the first reference signal is one of the reference signals associated with the N SRS resource sets for uplink transmission; Or, Determine the precoding of the SRSs of the i-th SRS resource set according to a second reference signal associated with the i-th SRS resource set, where i is an integer from 1 to N.

26. The device according to claim 25, characterized in that, The apparatus further includes: A third obtaining module, configured to obtain parameter information of a codebook subset configured by a network side device; When the first determining module determines the precoding of the M SRSs according to the first reference signal, specifically: In the case where the parameter information of the codebook subset indicates one codebook subset, determine the precoding of the M SRSs from the corresponding precodings of the one codebook subset according to the first reference signal; When the first determining module determines the precoding of the SRSs of the i-th SRS resource set according to the second reference signal associated with the i-th SRS resource set, specifically: In the case where the parameter information of the codebook subset indicates N codebook subsets, determine the precoding of the SRSs of the i-th SRS resource set from the corresponding precodings of the i-th codebook subset among the N codebook subsets according to the second reference signal associated with the i-th SRS resource set.

27. A sounding reference signal (SRS) transmission device for monitoring, characterized in that, Applied to a network side device, the apparatus includes: A first configuration module, configured to configure N SRS resource sets for uplink transmission for a terminal, where N is greater than or equal to 1; A first receiving module, configured to receive M SRSs sent by the terminal according to precoding, where the precoding is determined according to the reference signals associated with the N SRS resource sets for uplink transmission, and M is greater than or equal to 1.

28. The device according to claim 27, wherein The apparatus further includes: A second configuration module, configured to configure parameter information of a codebook subset for the terminal, where the parameter information of the codebook subset indicates at least one codebook subset.

29. A sounding reference signal (SRS) transmission monitoring device, characterized in that, Applied to a terminal, the apparatus includes: A second obtaining module, configured to obtain parameter information of a codebook subset configured by a network side device; A second determining module, configured to determine the precoding of the SRS according to the parameter information of the codebook subset; A second sending module, configured to send the SRS based on the precoding.

30. A sounding reference signal (SRS) transmission monitoring device, characterized in that Applied to a network side device, the apparatus includes: A third sending module, configured to send parameter information of a codebook subset to a terminal; A second receiving module, configured to receive the SRS sent by the terminal according to precoding, where the precoding is determined according to the parameter information of the codebook subset.

31. A communication device, characterized in that, Comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it implements the steps of listening to the transmission of the sounding reference signal SRS as described in any one of claims 1 to 14, or implements the steps of listening to the transmission of the sounding reference signal SRS as described in any one of claims 15 to 19, or implements the steps of listening to the transmission of the sounding reference signal SRS as described in any one of claims 20 to 21, or implements the steps of listening to the transmission of the sounding reference signal SRS as described in any one of claims 22.

32. A readable storage medium, characterized in that, The program or instructions are stored on the readable storage medium, and when the program or instructions are executed by the processor, the steps of listening to the transmission of the sounding reference signal (SRS) as described in any one of claims 1 to 14 are implemented, or the steps of listening to the transmission of the sounding reference signal (SRS) as described in any one of claims 15 to 19 are implemented, or the steps of listening to the transmission of the sounding reference signal (SRS) as described in any one of claims 20 to 21 are implemented, or the steps of listening to the transmission of the sounding reference signal (SRS) as described in claim 22 are implemented.

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