Transmission method, apparatus, terminal and network side device of srs

Abstract

The embodiment of the application discloses a SRS transmission method, device, terminal and network side equipment, and belongs to the technical field of communication. The SRS transmission method comprises the following steps: a terminal determines a sending parameter of a SRS, wherein the sending parameter comprises at least one of the following: a TCI state, a precoding, and a power control parameter; and the terminal sends the SRS according to the sending parameter.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a sounding reference signal (SRS) transmission method and device, a terminal and a network side device. BACKGROUND

[0002] In order to improve the efficiency of beam management and reduce the beam update delay, a unified transmission configuration indication (TCI) architecture is introduced in a mobile communication system, that is, a unified set of beam indication information is used for uplink and downlink transmission.

[0003] However, under the unified TCI framework, how the terminal transmits the sounding reference signal (SRS) is a technical problem that needs to be solved. SUMMARY

[0004] The embodiments of the present application provide a SRS transmission method and device, a terminal and a network side device, which can solve the problem that the terminal cannot transmit SRS, and thus cannot perform channel performance estimation according to the SRS, thereby affecting the effectiveness of communication.

[0005] In a first aspect, a SRS transmission method is provided, which includes: a terminal determining a transmission parameter of a SRS, the transmission parameter including at least one of the following: a TCI state, a precoding, and a power control parameter; and the terminal transmitting the SRS according to the transmission parameter.

[0006] In a second aspect, a SRS transmission method is provided, which includes: a network side device receiving a SRS, the SRS being transmitted by a terminal according to a determined transmission parameter, the transmission parameter including at least one of the following: a TCI state, a precoding, and a power control parameter.

[0007] In a third aspect, a SRS transmission device is provided, which includes: a determination module configured to determine a transmission parameter of a SRS, the transmission parameter including at least one of the following: a TCI state, a precoding, and a power control parameter; and a transmission module configured to transmit the SRS according to the transmission parameter.

[0008] In a fourth aspect, a SRS transmission device is provided, which includes: a receiving module configured to receive a SRS, the SRS being transmitted by a terminal according to a determined transmission parameter, the transmission parameter including at least one of the following: a TCI state, a precoding, and a power control parameter.

[0009] In a fifth aspect, a terminal is provided, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the method of the first aspect.

[0010] In a sixth aspect, a terminal is provided, which includes a processor and a communication interface, wherein the processor is configured to determine a transmission parameter of a SRS, and the transmission parameter includes at least one of a TCI state, a precoding, and a power control parameter; and the communication interface is configured to transmit the SRS according to the transmission parameter.

[0011] In a seventh aspect, a network-side device is provided, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the method of the second aspect.

[0012] In an eighth aspect, a network-side device is provided, which includes a processor and a communication interface, wherein the communication interface is configured to receive a SRS, and the SRS is transmitted by a terminal according to a determined transmission parameter, and the transmission parameter includes at least one of a TCI state, a precoding, and a power control parameter.

[0013] In a ninth aspect, a readable storage medium is provided, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the method of the first aspect or the method of the second aspect.

[0014] In a tenth aspect, a chip is provided, which includes a processor and a communication interface, and the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method of the first aspect or the method of the second aspect.

[0015] In an eleventh aspect, a computer program / program product is provided, which is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to implement the method of the first aspect or the method of the second aspect.

[0016] In the embodiments of the present application, a terminal determines a transmission parameter of a SRS, and transmits the SRS according to the determined transmission parameter, and the transmission parameter includes at least one of a TCI state, a precoding, and a power control parameter. The embodiments of the present application are beneficial to effective transmission of the SRS, and further improve the performance of uplink data transmission through SRS measurement to obtain transmission parameters for PUSCH. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1is a schematic diagram of a wireless communication system according to an embodiment of the present application;

[0018] Figure 2 is a schematic flow chart of a transmission method of SRS according to an embodiment of the present application;

[0019] Figure 3 is a schematic flow chart of a transmission method of SRS according to an embodiment of the present application;

[0020] Figure 4 is a structural schematic diagram of a transmission apparatus of SRS according to an embodiment of the present application;

[0021] Figure 5 is a structural schematic diagram of a transmission apparatus of SRS according to an embodiment of the present application;

[0022] Figure 6 is a structural schematic diagram of a communication device according to an embodiment of the present application;

[0023] Figure 7 is a structural schematic diagram of a terminal according to an embodiment of the present application;

[0024] Figure 8 is a structural schematic diagram of a network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly below with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, not to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are usually a category, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0027] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, and these technologies can also be applied outside the NR system application, such as 6th Generation (6G) communication systems. th

[0028] Figure 1 ​A schematic 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. The terminal 11 can also be referred to as a terminal device or a user terminal (User Equipment, UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with wireless communication function, such as a refrigerator, a television, a washing machine, or furniture, etc.), and the like. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart ankle bracelet, a smart ankle chain, etc.), a smart wristband, smart clothing, a game console, and the like. 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 be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a next generation node B (gNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only the base station in the NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0029] The SRS transmission method, device, terminal and network side device provided by the embodiments of the present application will be described in detail below in combination with the drawings and some embodiments and application scenarios.

[0030] The various embodiments of this application can be applied to scenarios of Physical Uplink Shared Channel (PUSCH) transmission based on non-codebook, that is, the terminal can first receive the Channel State Information-Reference Signal (CSI-RS) and obtain the downlink channel state information through the received CSI-RS.

[0031] Based on channel reciprocity, the downlink channel information can be approximately equivalent to the uplink channel information. In this way, the terminal can calculate candidate precoding for uplink transmission based on the uplink channel information, precode the SRS based on the precoding, and send it. The SRS is associated with the aforementioned CSI-RS.

[0032] After the terminal sends the SRS, the network-side device can further determine the precoding used for PUSCH transmission based on the measured precoded SRS, and notify the terminal through the Downlink Control Information (DCI) of the PUSCH. The terminal can then use the precoding indicated by the network-side device to send the PUSCH.

[0033] The subsequent embodiments of this application mostly use the scenario of non-codebook PUSCH transmission as an example to illustrate how SRS should be transmitted. It can be understood that the SRS transmission method provided in the embodiments of this application is not limited to the above-mentioned scenario of non-codebook PUSCH transmission.

[0034] like Figure 2 As shown, this application embodiment provides an SRS transmission method 200, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal, and the method includes the following steps.

[0035] S202: The terminal determines the transmission parameters of the SRS, the transmission parameters including at least one of the following: Transmission Configuration Indicator (TCI) status, precoding, power control parameters.

[0036] In one embodiment, the transmission parameters include the TCI state. This embodiment can be applied to scenarios involving non-codebook-based PUSCH transmission, where the SRS is configured with an associated CSI-RS. Thus, the TCI state used by the SRS can reference the TCI state of the CSI-RS; for example, the beam information of the SRS can reference the beam information of the CSI-RS, enabling the SRS and CSI-RS to use the same beam for transmission.

[0037] In other examples, the embodiments of the present application can be applied in a unified TCI framework, i.e., a unified set of beam indication information is used for uplink and downlink transmission of the terminal. For example, a unified beam is used for uplink and downlink, and a joint TCI state is used for all channels and / or signals of uplink and downlink (referred to as joint TCI state), i.e., the SRS and the associated CSI-RS are transmitted using the joint TCI state.

[0038] In another embodiment, the transmission parameter includes precoding, which can be applied in the scenario of non-codebook-based PUSCH transmission, and the SRS is configured with an associated CSI-RS. In this way, the terminal can calculate the precoding of the SRS according to the CSI-RS.

[0039] In other examples, the SRS is not configured with an associated CSI-RS, and the terminal can also calculate the precoding of the SRS according to a target reference signal, which will be described in detail in subsequent embodiments.

[0040] In another embodiment, the transmission parameter includes a power control parameter, which can be applied in the scenario of non-codebook-based PUSCH transmission, and the SRS is configured with an associated CSI-RS. In this way, the terminal can determine the power control parameter according to the first command.

[0041] In this embodiment, the first command can be used to indicate a TCI state, and the TCI state indicated by the first command includes at least one of the following: a joint TCI state; a separate TCI state, which includes an uplink TCI state and a downlink TCI state.

[0042] The joint TCI state mentioned in various embodiments of the present application can be a unified set of beam indication information used for uplink and downlink transmission of the terminal, i.e., a unified joint TCI state is used; the separate TCI state mentioned in various embodiments of the present application can be that two separate TCI states are indicated by the DCI, one downlink TCI state is applied to downlink channels or signals, and one uplink TCI state is applied to uplink channels or signals.

[0043] It should be noted that the above multiple embodiments respectively introduce how the terminal determines the TCI state, precoding and power control parameter used for SRS transmission. In fact, the above multiple embodiments can be combined as needed, so that the terminal can simultaneously use one or more of the above embodiments to determine the transmission parameter of the SRS.

[0044] S204: The terminal transmits the SRS according to the transmission parameter.

[0045] The terminal can send the SRS according to the determined sending parameter in this step. It can be understood that the terminal may also need parameters other than the sending parameter to send the SRS, and these parameters can be obtained according to the protocol agreement or network side device indication.

[0046] The terminal determines the sending parameter of the SRS and sends the SRS according to the determined sending parameter. The sending parameter includes at least one of the following: a TCI state, precoding, and a power control parameter. The embodiments of the present application are beneficial to effective transmission of the SRS, and further obtain the transmission parameter for the PUSCH through SRS measurement, thereby further improving the performance of uplink data transmission.

[0047] The SRS transmission method provided by the embodiments of the present application can be applied in a unified TCI architecture, so that the SRS is effectively transmitted. The unified TCI architecture is that a set of unified beam indication information is used for uplink and downlink transmission of the terminal. For example, one is to use one beam for uplink and downlink. When the DCI indicates one TCI state, all channels and / or signals of uplink and downlink apply the TCI state (referred to as joint TCI state). Another scheme is that the DCI indicates a pair of beams, that is, two TCI states, one is applied to the downlink channel or signal, and one is applied to the uplink channel or signal. The two TCI states can be referred to as separate TCI states.

[0048] Optionally, based on the embodiment 200, before the terminal determines the sending parameter of the SRS, the method further includes: the terminal receives a CSI-RS, the CSI-RS is associated with the SRS, and the CSI-RS uses a downlink TCI state indicated by a first command; wherein the TCI state indicated by the first command can include at least one of the following: a joint TCI state, the joint TCI state is used as an uplink TCI state and the downlink TCI state at the same time; a separate TCI state, the separate TCI state includes an uplink TCI state and the downlink TCI state. This embodiment assumes that the TCI state indicated by the first command includes the joint TCI state, or includes the downlink TCI state in the separate TCI state. This embodiment can be applied in the scene of non-codebook-based PUSCH transmission.

[0049] In one embodiment, the TCI state indicated by the first command is the joint TCI state, and the sending parameter includes the TCI state. The terminal determines the sending parameter of the SRS, including: the terminal takes the joint TCI state as the TCI state of the SRS.

[0050] In this embodiment, the CSI-RS and the PUSCH in the non-codebook-based PUSCH transmission scenario can both use the joint TCI state; that is, the SRS in this embodiment is used for PUSCH transmission.

[0051] In this embodiment, the terminal determining the transmission parameter of the SRS can further include: the terminal taking the power control parameter for SRS transmission contained or associated by the joint TCI state as the power control parameter of the SRS.

[0052] In another embodiment, the TCI state indicated by the first command is the separate TCI state, and the CSI-RS uses the first command downlink TCI state. In this embodiment, the terminal determining the transmission parameter of the SRS includes: the terminal taking the power control parameter for SRS transmission contained or associated by the uplink TCI state as the power control parameter of the SRS.

[0053] In this embodiment, in the case where the terminal determines the power control parameter according to the first command, the beam information used by the terminal to transmit the SRS can refer to the beam information of the CSI-RS, so that the SRS and the CSI-RS are transmitted using the same beam.

[0054] In this embodiment, the terminal can further transmit a PUSCH; wherein the terminal transmits the PUSCH by referring to the power control parameter for PUSCH transmission contained or associated by the uplink TCI state, that is, the SRS in this embodiment is used for PUSCH transmission.

[0055] In this embodiment, the SRS and / or the PUSCH can ignore the first information, which is information other than the power control parameter in the information contained or associated by the uplink TCI state.

[0056] In each of the above embodiments, in the case where the transmission parameter includes precoding, the terminal determining the transmission parameter of the SRS includes: the terminal calculating the precoding of the SRS according to the CSI-RS.

[0057] Optionally, based on the embodiment 200, the transmission parameter includes a TCI state, and the terminal determining the transmission parameter of the SRS includes: the terminal taking the uplink TCI state indicated by the first command as the TCI state of the SRS; wherein the TCI state indicated by the first command includes at least one of the following: a joint TCI state, which simultaneously serves as a downlink TCI state and the uplink TCI state; a separate TCI state, which includes the uplink TCI state and a downlink TCI state, this embodiment assumes that the TCI state indicated by the first command includes a joint TCI state, or an uplink TCI state included in a separate TCI state.

[0058] The terminal uses the uplink TCI state in the separated TCI state indicated by the first command as the TCI state of the SRS.

[0059] On the basis of the above embodiment, before the terminal determines the transmission parameter of the SRS, the method further comprises: the terminal receives a CSI-RS, the CSI-RS is associated with the SRS, and the CSI-RS does not use the TCI state indicated by the first command, for example, the CSI-RS does not use the downlink TCI state in the separated TCI state indicated by the first command.

[0060] The embodiment meets one of the following conditions:

[0061] 1) The reference signal of QCL type D in the TCI state indicated by the first command is the same as the reference signal in the TCI state associated with the CSI-RS.

[0062] 2) The reference signal corresponding to the QCL in the TCI state indicated by the first command is quasi co-located with the CSI-RS.

[0063] Through the restriction of at least one of the above two conditions, in the scenario of non-codebook-based PUSCH transmission, the SRS and the CSI-RS are transmitted using the same beam, so that the precoding of the SRS calculated by the CSI-RS is more accurate, the transmission quality of the SRS and the PUSCH is improved, and the communication efficiency is improved.

[0064] Optionally, based on the embodiment 200, the SRS is not configured with an associated CSI-RS, and the terminal determining the transmission parameter of the SRS comprises: the terminal calculating the precoding used by the SRS according to a target reference signal; wherein the target reference signal is one of the following:

[0065] 1) The non-zero power CSI-RS closest to the SRS and associated with the same TCI state of the SRS. Optionally, the SRS is at least one of non-periodic, semi-persistent, and periodic, and correspondingly, the CSI-RS can also be at least one of non-periodic, semi-persistent, and periodic.

[0066] 2) The non-zero power CSI-RS farthest from the SRS and associated with the same TCI state of the SRS, X is a positive integer. The above time unit can be a time slot, an orthogonal frequency division multiplexing (OFDM) symbol, a millisecond, etc.

[0067] 3) The CSI-RS in the TCI state indicated by the target resource.

[0068] 4) The second command configures or updates the CSI-RS. The second command can be a Radio Resource Control (RRC) command, or a Media Access Control-Control Element (MAC CE) command.

[0069] The embodiment can be applied in a unified TCI framework to enable efficient SRS transmission. The embodiment can be applied in a non-codebook-based PUSCH transmission scenario, or in other scenarios.

[0070] Optionally, based on the embodiment 200, the terminal determining the transmission parameter of the SRS comprises: the terminal determining the transmission parameter of the SRS according to a resource set to which the SRS belongs; wherein the resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set refers to a joint TCI state, and the second SRS resource set refers to a separate TCI state.

[0071] It should be noted that the first SRS resource set and the second SRS resource set mentioned in the embodiment can be the first SRS resource set and the second SRS resource set after sorting according to the size (or small size) of the identifier of the SRS resource set. Therefore, in the above embodiment, the first SRS resource set refers to the joint TCI state, and the second SRS resource set refers to the separate TCI state. In other examples, the second SRS resource set can refer to the joint TCI state, and the first SRS resource set can refer to the separate TCI state.

[0072] Optionally, the first SRS resource set referring to the joint TCI state comprises: the SRS in the first SRS resource set, the CSI-RS associated with the SRS in the first SRS resource set, and the PUSCH associated with the SRS in the first SRS resource set all using the joint TCI state.

[0073] Optionally, the separate TCI state comprises an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI state comprises at least one of the following:

[0074] 1) The CSI-RS associated with the SRS in the second SRS resource set uses the downlink TCI state;

[0075] 2) the SRS in the second SRS resource set, the SRS in the second SRS resource set referring to the power control parameters contained or associated with the second information, and ignoring the first information, the first information being information other than the power control parameters contained or associated with the uplink TCI state.

[0076] For example, the first command indicates a joint TCI state and a separate TCI state at the same time. The joint TCI state mentioned in this embodiment can be a set of unified beam indication information (such as a unified joint TCI state) used by the terminal for uplink and downlink transmission. The separate TCI state mentioned in this embodiment can be a pair of beams indicated by the DCI, that is, two TCI states, one downlink TCI state applied to a downlink channel or signal, and one uplink TCI state applied to an uplink channel or signal.

[0077] This embodiment assumes that the RRC configures the terminal with an SRS resource set, which includes a first SRS resource set and a second SRS resource set. The RRC-configured first SRS resource set can refer to a joint TCI state, and the SRS resource in the first SRS resource set, the associated CSI-RS, and the PUSCH all refer to the joint TCI state.

[0078] The RRC-configured second SRS resource set refers to a separate TCI state. Specifically, the CSI-RS associated with the SRS resource in the second SRS resource set applies a downlink TCI state, and the SRS resource in the second SRS resource set and the associated PUSCH only refer to the power control parameter set associated or contained in the uplink TCI state, and ignore other information. In this embodiment, the beam information of the SRS resource in the second SRS resource set and the associated PUSCH refers to the beam information of the CSI-RS.

[0079] The grouping method of dividing the SRS resource set into the first SRS resource set and the second SRS resource set described above can be directly according to the SRS resource group.

[0080] For example, the RRC configures two SRS resource sets, SRS resource set 1 and SRS resource set 2. The SRS resource set 1 is associated with the CSI-RS 1, and the SRS resource set 2 is associated with the CSI-RS 2.

[0081] If the first command indicates a joint TCI state, the SRS resource set 1, the CSI-RS 1, and the PUSCH associated from the SRS resource set 1 apply the joint TCI state.

[0082] The second TCI state is a separate TCI state, including one downlink TCI state and one uplink TCI state, the CSI-RS2 applies the downlink TCI state, the SRS resource from the SRS resource set 2 and the PUSCH associated with the SRS resource only refer to the uplink TCI state associated or including the power control parameter set, and ignore other information.

[0083] Optionally, before the terminal determines the transmission parameter of the SRS, the method further includes: the terminal receives a second command, the second command being used for indicating at least one of the following: a resource pool of the TCI state; a mode of the TCI state, wherein the mode of the TCI state includes joint indication or separate indication.

[0084] The joint indication mentioned in this embodiment can be that the terminal uses a unified set of beam indication information (such as a unified joint TCI state) for uplink and downlink transmission; the separate indication mentioned in various embodiments of the present application can be that the DCI indicates a pair of beams, that is, two separate TCI states, one of which is applied to a downlink channel or signal, and one of which is applied to an uplink channel or signal.

[0085] In a multi-TRP scenario, the terminal or the SRS can be indicated multiple joint TCI states, each joint TCI state corresponding to one TRP; the terminal or the SRS can also be indicated multiple groups of separate TCI states, each group of separate TCI states corresponding to one TRP.

[0086] In this embodiment, the resource pool of the TCI state and the mode of the TCI state can satisfy at least one of the following:

[0087] 1) The resource pool of the TCI state is associated with a control resource set resource pool index (CORESETPoolIndex). Since the CORESETPoolIndex is associated with a TRP, the resource pool of the TCI state is also associated with the TRP.

[0088] 2) The mode of the TCI state is associated with the CORESETPoolIndex. Since the CORESETPoolIndex is associated with a TRP, the mode of the TCI state is also associated with the TRP.

[0089] 3) The resource pool of the TCI state is associated with the first SRS resource set.

[0090] 4) The mode of the TCI state is associated with the first SRS resource set.

[0091] 5) The resource pool of the TCI state is associated with the second SRS resource set.

[0092] 6) The mode of the TCI state is associated with the second SRS resource set.

[0093] 7) The resource pool of the TCI state is associated with the mode of the TCI state.

[0094] In this embodiment, the network side device can configure whether the TCI state indication mode is separate or joint, and these indication modes can be associated with the TRP, which can be distinguished by the identity of the SRS resource set and can also be distinguished by the identity of the resource pool of the TCI state.

[0095] Through the above association, in a multi-transmission and reception point / multi-antenna panel (multi-TRP / multi-panel, hereinafter collectively referred to as M-TRP or multi-TRP) scenario, different TCI state indication modes can be configured for different TRPs based on the capability of the terminal and the channel condition, increasing the network configuration flexibility, while also ensuring the performance of the uplink transmission.

[0096] Optionally, based on the embodiment 200, the terminal satisfies at least one of the following:

[0097] 1) The SRS is associated with a CSI-RS, and the terminal is configured to be jointly indicated by the uplink and downlink beams, and in this example, the terminal does not expect to be configured to be indicated by separate TCI states. This embodiment enables the SRS and the CSI-RS to be transmitted using the same beam, so that the precoding of the SRS calculated by the CSI-RS is more accurate, improving the transmission quality of the SRS and the PUSCH, and improving the communication efficiency.

[0098] 2) The CSI-RS associated with the SRS is indicated by the TCI state of the first command, and the first command can refer to the description of the previous embodiment.

[0099] 3) The QCL relationship associated with the TCI state indicated by the first command does not take effect on the SRS and / or PUSCH, wherein the SRS is used for the PUSCH transmission, and the first command can refer to the description of the previous embodiment. Optionally, the QCL relationship in this embodiment can be a type D QCL relationship.

[0100] The above describes the transmission method of the SRS according to the embodiments of the present application in detail. Figure 2 The transmission method of the SRS according to another embodiment of the present application is described in detail below. It can be understood that the interaction between the network side device described from the network side device and the terminal is the same as the description of the terminal side in the method shown in the description, and the related description is appropriately omitted to avoid repetition. Figure 3 The transmission method of the SRS according to another embodiment of the present application is described in detail below. It can be understood that the interaction between the network side device described from the network side device and the terminal is the same as the description of the terminal side in the method shown in the description, and the related description is appropriately omitted to avoid repetition. Figure 2 The description of the terminal side in the method shown in the description is the same, and the related description is appropriately omitted to avoid repetition.

[0101] Figure 3 is a flowchart of the implementation process of the SRS transmission method according to the embodiments of the present application, which can be applied to a network side device. As shown inFigure 3 As shown, the method 300 includes the following steps.

[0102] S302: The network-side device receives an SRS, which is transmitted by a terminal according to determined transmission parameters, and the transmission parameters include at least one of the following: a TCI state, precoding, and a power control parameter.

[0103] In the embodiments of the present application, the network-side device receives an SRS, which is transmitted by a terminal according to determined transmission parameters, and the transmission parameters include at least one of the following: a TCI state, precoding, and a power control parameter. The embodiments of the present application are beneficial to effective transmission of the SRS, and further improve the performance of uplink data transmission through SRS measurement to obtain transmission parameters for PUSCH.

[0104] Optionally, as one embodiment, before the network-side device receives the SRS, the method further includes: the network-side device transmits a CSI-RS, the CSI-RS is associated with the SRS, and the CSI-RS uses a downlink TCI state indicated by a first command; wherein the TCI state indicated by the first command includes at least one of the following: a joint TCI state, which is used as an uplink TCI state and the downlink TCI state at the same time; and a separate TCI state, which includes an uplink TCI state and the downlink TCI state.

[0105] Optionally, as one embodiment, the TCI state indicated by the first command is the joint TCI state; wherein the TCI state of the SRS is the joint TCI state, and / or the power control parameter of the SRS is a power control parameter for SRS transmission contained or associated by the joint TCI state.

[0106] Optionally, as one embodiment, the TCI state indicated by the first command is the separate TCI state; wherein the power control parameter of the SRS is a power control parameter for SRS transmission contained or associated by the uplink TCI state.

[0107] Optionally, as one embodiment, after the network-side device receives the SRS, the method further includes: the network-side device receives a PUSCH; wherein the transmission of the PUSCH refers to a power control parameter for PUSCH transmission contained or associated by the uplink TCI state, and the SRS is used for the PUSCH transmission.

[0108] ​Optionally, as an embodiment, the TCI state of the SRS is an uplink TCI state indicated by a first command; wherein the TCI state indicated by the first command comprises at least one of: a joint TCI state, the joint TCI state being used as both a downlink TCI state and the uplink TCI state; and a separate TCI state, the separate TCI state comprising the uplink TCI state and the downlink TCI state.

[0109] Optionally, as an embodiment, before the network-side device receives the SRS, the method further comprises: the network-side device sending a CSI-RS, the CSI-RS being associated with the SRS, and the CSI-RS not using the TCI state indicated by the first command; wherein a reference signal of QCL type D in the TCI state is the same as a reference signal in a TCI state associated with the CSI-RS; or the CSI-RS is quasi co-located with a reference signal corresponding to QCL in the TCI state.

[0110] Optionally, as an embodiment, the SRS has no associated CSI-RS configured, and a precoding used by the SRS is calculated by the terminal according to a target reference signal; wherein the target reference signal is one of:

[0111] 1) a non-zero-power CSI-RS closest to the SRS and associated with the same TCI state as the SRS.

[0112] 2) a non-zero-power CSI-RS other than the closest one to the SRS and associated with the same TCI state as the SRS, X being a positive integer.

[0113] 3) a CSI-RS in a TCI state indicated for a target resource.

[0114] 4) a CSI-RS configured or updated by a second command.

[0115] Optionally, as an embodiment, a transmission parameter of the SRS is determined by the terminal according to a resource set to which the SRS belongs; wherein the resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set referring to a joint TCI state, and the second SRS resource set referring to a separate TCI state.

[0116] Optionally, as an embodiment, the first SRS resource set referring to a joint TCI state comprises: an SRS in the first SRS resource set, a CSI-RS associated with the SRS in the first SRS resource set, and a PUSCH associated with the SRS in the first SRS resource set, all using the joint TCI state.

[0117] Optionally, as an embodiment, the separated TCI states include uplink TCI states and downlink TCI states, and the second SRS resource set references the separated TCI states, including at least one of the following: a CSI-RS associated with an SRS in the second SRS resource set uses the downlink TCI state; the SRS in the second SRS resource set and a PUSCH associated with the SRS in the second SRS resource set both reference second information, and ignore first information, the second information being a power control parameter included in or associated with the uplink TCI state, and the first information being information included in or associated with the uplink TCI state, other than the power control parameter.

[0118] Optionally, as an embodiment, before the network-side device receives the SRS, the method further includes: the network-side device sending a second command, the second command being used to indicate at least one of the following: a resource pool of TCI states; a mode of TCI states, wherein the mode of TCI states includes joint indication or separate indication.

[0119] Optionally, as an embodiment, at least one of the following is satisfied: the resource pool of TCI states is associated with a CORESETPoolIndex; the mode of TCI states is associated with the CORESETPoolIndex; the resource pool of TCI states is associated with the first SRS resource set; the mode of TCI states is associated with the first SRS resource set; the resource pool of TCI states is associated with the second SRS resource set; the mode of TCI states is associated with the second SRS resource set; and the resource pool of TCI states is associated with the mode of TCI states.

[0120] Optionally, as an embodiment, at least one of the following is satisfied: the SRS is associated with a CSI-RS, and the terminal is configured to be uplink and downlink beam joint indication; the CSI-RS associated with the SRS uses a TCI state indicated by the first command; and a QCL relationship associated with the TCI state indicated by the first command does not take effect on the SRS and / or a PUSCH, and the SRS is used for transmission of the PUSCH.

[0121] It should be noted that the SRS transmission method provided in the embodiments of the present application can be executed by an SRS transmission device, or a control module in the SRS transmission device for executing the SRS transmission method. In the embodiments of the present application, the SRS transmission device executes the SRS transmission method as an example, and the SRS transmission device provided in the embodiments of the present application is described.

[0122] Figure 4 is a structural schematic diagram of the SRS transmission device according to the embodiments of the present application, which can correspond to the terminal in other embodiments. As shown in FIG. 8, the SRS transmission device includes a receiving module 801, a determining module 802, a sending module 803, and a processing module 804. Figure 4As shown, the apparatus 400 includes the following modules.

[0123] The determining module 402 can be configured to determine a transmission parameter of the SRS, the transmission parameter including at least one of the following: a TCI state, a precoding, a power control parameter.

[0124] The sending module 404 can be configured to send the SRS according to the transmission parameter.

[0125] In the embodiments of the present application, the apparatus 400 determines a transmission parameter of the SRS, and sends the SRS according to the determined transmission parameter, the transmission parameter including at least one of the following: a TCI state, a precoding, a power control parameter. The embodiments of the present application are beneficial to effective transmission of the SRS, and further can obtain a transmission parameter for PUSCH through SRS measurement, and further improve the performance of uplink data transmission.

[0126] Optionally, as an embodiment, the apparatus further includes a receiving module, which can be configured to: receive a CSI-RS, the CSI-RS being associated with the SRS, the CSI-RS using a downlink TCI state indicated by a first command; wherein the TCI state indicated by the first command includes at least one of the following: a joint TCI state, the joint TCI state being used as both the downlink TCI state and an uplink TCI state; a separate TCI state, the separate TCI state including the uplink TCI state and the downlink TCI state.

[0127] Optionally, as an embodiment, the TCI state indicated by the first command is the joint TCI state, the transmission parameter includes the TCI state, and the determining module 402 can be configured to use the joint TCI state as the TCI state of the SRS.

[0128] Optionally, as an embodiment, the CSI-RS and the PUSCH both use the joint TCI state; wherein the SRS is used for the PUSCH transmission.

[0129] Optionally, as an embodiment, the TCI state indicated by the first command is the joint TCI state, the transmission parameter includes a power control parameter, and the determining module 402 can be configured to use a power control parameter for SRS transmission included in or associated with the joint TCI state as the power control parameter of the SRS.

[0130] Optionally, as an embodiment, the TCI state indicated by the first command is the separate TCI state, the transmission parameter includes a power control parameter, and the determining module 402 can be configured to use a power control parameter for SRS transmission included in or associated with the uplink TCI state as the power control parameter of the SRS.

[0131] Optionally, as an embodiment, the sending module 404 can also be configured to send a PUSCH, wherein the PUSCH is transmitted with reference to the power control parameter for PUSCH transmission contained in or associated with the uplink TCI state, and the SRS is used for the PUSCH transmission.

[0132] Optionally, as an embodiment, the SRS and / or the PUSCH ignore first information, wherein the first information is information other than the power control parameter in the information contained in or associated with the uplink TCI state.

[0133] Optionally, as an embodiment, the sending parameter includes precoding, and the determining module 402 can be configured to calculate the precoding of the SRS according to the CSI-RS.

[0134] Optionally, as an embodiment, the sending parameter includes a TCI state, and the determining module 402 can be configured to use the uplink TCI state indicated by the first command as the TCI state of the SRS, wherein the TCI state indicated by the first command includes at least one of the following: a joint TCI state, which is used as both a downlink TCI state and the uplink TCI state; and a separate TCI state, which includes the uplink TCI state and a downlink TCI state.

[0135] Optionally, as an embodiment, the apparatus further includes a receiving module, which can be configured to receive a CSI-RS, wherein the CSI-RS is associated with the SRS, and the CSI-RS does not use the TCI state indicated by the first command; wherein the reference signal of QCL type D in the TCI state is the same as the reference signal in the TCI state associated with the CSI-RS; or the CSI-RS is quasi-co-located with the reference signal corresponding to the QCL in the TCI state.

[0136] Optionally, as an embodiment, the SRS is not configured with an associated CSI-RS, and the determining module 402 can be configured to calculate the precoding used by the SRS according to a target reference signal, wherein the target reference signal is one of the following:

[0137] 1) a non-zero power CSI-RS that is closest to the SRS and is associated with the same TCI state as the SRS.

[0138] 2) a non-zero power CSI-RS that is not closest to the SRS and is associated with the same TCI state as the SRS, wherein X is a positive integer.

[0139] 3) a CSI-RS in the TCI state indicated for the target resource.

[0140] 4) a CSI-RS configured or updated by the second command.

[0141] Optionally, as one embodiment, the determining module 402 can be configured to determine the transmission parameter of the SRS according to a resource set to which the SRS belongs; wherein the resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set refers to a joint TCI state, and the second SRS resource set refers to a separate TCI state.

[0142] Optionally, as one embodiment, the first SRS resource set referring to the joint TCI state comprises that: the SRS in the first SRS resource set, a CSI-RS associated with the SRS in the first SRS resource set, and a PUSCH associated with the SRS in the first SRS resource set all use the joint TCI state.

[0143] Optionally, as one embodiment, the separate TCI state comprises an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI state comprises at least one of the following: a CSI-RS associated with the SRS in the second SRS resource set uses the downlink TCI state; the SRS in the second SRS resource set and a PUSCH associated with the SRS in the second SRS resource set both refer to second information and ignore first information, the second information being a power control parameter contained or associated with the uplink TCI state, and the first information being information other than the power control parameter in the information contained or associated with the uplink TCI state.

[0144] Optionally, as one embodiment, the apparatus further comprises a receiving module configured to receive a second command, the second command being used to indicate at least one of the following: a resource pool of a TCI state; and a mode of a TCI state, wherein the mode of the TCI state comprises joint indication or separate indication.

[0145] Optionally, as one embodiment, at least one of the following is met: the resource pool of the TCI state is associated with a CORESETPoolIndex; the mode of the TCI state is associated with the CORESETPoolIndex; the resource pool of the TCI state is associated with the first SRS resource set; the mode of the TCI state is associated with the first SRS resource set; the resource pool of the TCI state is associated with the second SRS resource set; the mode of the TCI state is associated with the second SRS resource set; and the resource pool of the TCI state is associated with the mode of the TCI state.

[0146] Optionally, as an embodiment, at least one of the following is met: the SRS is associated with a CSI-RS, the terminal is configured to perform joint indication of uplink and downlink beams; the CSI-RS associated with the SRS uses a TCI state indicated by a first command; a QCL relationship associated with the TCI state indicated by the first command is not effective for the SRS and / or PUSCH, and the SRS is used for the PUSCH transmission.

[0147] The apparatus 400 according to the embodiments of the present application can refer to the flow of the method 200 according to the embodiments of the present application, and each unit / module in the apparatus 400 and the above-mentioned other operations and / or functions are respectively used to implement the corresponding flow in the method 200 and can achieve the same or equivalent technical effects, and for the sake of brevity, will not be repeated here.

[0148] The SRS transmission apparatus in the embodiments of the present application can be an apparatus, an apparatus with an operating system, or an electronic device, and can also be a component in a terminal, an integrated circuit, or a chip. The apparatus or electronic device can be a mobile terminal or a non-mobile terminal. Illustratively, the mobile terminal can include, but is not limited to, the types of terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc., and the embodiments of the present application are not limited specifically.

[0149] The SRS transmission apparatus provided by the embodiments of the present application can implement the various processes of the method embodiments Figure 2 and achieve the same technical effects, and for the sake of brevity, will not be repeated here.

[0150] Figure 5 is a structural schematic diagram of the SRS transmission apparatus according to the embodiments of the present application, and the apparatus can correspond to the network side device in other embodiments. As shown in Figure 5 , the apparatus 500 includes the following modules.

[0151] The receiving module 502 can be used to receive the SRS, wherein the SRS is transmitted by the terminal according to the determined transmission parameters, and the transmission parameters include at least one of the following: a TCI state, a precoding, and a power control parameter.

[0152] In the embodiments of the present application, the apparatus 500 receives the SRS, which is transmitted by the terminal according to the determined transmission parameter, the transmission parameter including at least one of the following: a TCI state, a precoding, and a power control parameter. The embodiments of the present application facilitate effective transmission of the SRS, and further improve the performance of uplink data transmission by measuring the SRS to obtain transmission parameters for the PUSCH.

[0153] Optionally, as an embodiment, the apparatus further includes a sending module, which can be configured to send a CSI-RS, the CSI-RS being associated with the SRS, and the CSI-RS using a downlink TCI state indicated by a first command; wherein the TCI state indicated by the first command includes at least one of the following: a joint TCI state, the joint TCI state being used as both the downlink TCI state and an uplink TCI state; and a separate TCI state, the separate TCI state including the uplink TCI state and the downlink TCI state.

[0154] Optionally, as an embodiment, the TCI state indicated by the first command is the joint TCI state; wherein the TCI state of the SRS is the joint TCI state, and / or the power control parameter of the SRS is a power control parameter for SRS transmission included in or associated with the joint TCI state.

[0155] Optionally, as an embodiment, the TCI state indicated by the first command is the separate TCI state; wherein the power control parameter of the SRS is a power control parameter for SRS transmission included in or associated with the uplink TCI state.

[0156] Optionally, as an embodiment, the receiving module 502 can also be configured to receive a PUSCH; wherein the PUSCH refers to a power control parameter for PUSCH transmission included in or associated with the uplink TCI state, and the SRS is used for the PUSCH transmission.

[0157] Optionally, as an embodiment, the TCI state of the SRS is an uplink TCI state indicated by a first command; wherein the TCI state indicated by the first command includes at least one of the following: a joint TCI state, the joint TCI state being used as both a downlink TCI state and the uplink TCI state; and a separate TCI state, the separate TCI state including the uplink TCI state and the downlink TCI state.

[0158] Optionally, as one embodiment, the apparatus further comprises a sending module, which can be used for sending a CSI-RS, the CSI-RS being associated with the SRS, and the CSI-RS not using the TCI state indicated by the first command; wherein the reference signal of QCL type D in the TCI state is the same as the reference signal in the TCI state associated with the CSI-RS; or the CSI-RS is quasi co-located with the reference signal corresponding to the QCL in the TCI state.

[0159] Optionally, as one embodiment, the SRS is not configured with an associated CSI-RS, and the precoding used by the SRS is calculated by the terminal according to a target reference signal; wherein the target reference signal is one of the following:

[0160] 1) the non-zero power CSI-RS closest to the SRS and associated with the same TCI state as the SRS.

[0161] 2) the non-zero power CSI-RS other than the closest to the SRS and associated with the same TCI state as the SRS, X being a positive integer.

[0162] 3) the CSI-RS in the TCI state indicated by the target resource.

[0163] 4) the CSI-RS configured or updated by the second command.

[0164] Optionally, as one embodiment, the sending parameter of the SRS is determined by the terminal according to the resource set to which the SRS belongs; wherein the resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set referring to a joint TCI state, and the second SRS resource set referring to a separate TCI state.

[0165] Optionally, as one embodiment, the first SRS resource set referring to a joint TCI state comprises: the SRS in the first SRS resource set, the CSI-RS associated with the SRS in the first SRS resource set, and the PUSCH associated with the SRS in the first SRS resource set all using the joint TCI state.

[0166] Optionally, as one embodiment, the separate TCI states include an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI states includes at least one of the following: a CSI-RS associated with an SRS in the second SRS resource set uses the downlink TCI state; the SRS in the second SRS resource set and the SRS in the second SRS resource set associated with a PUSCH all refer to second information and ignore first information, the second information being a power control parameter included or associated with the uplink TCI state, and the first information being information included or associated with the uplink TCI state other than the power control parameter.

[0167] Optionally, as one embodiment, the apparatus further includes a sending module, which can be used for sending a second command, the second command being used for indicating at least one of the following: a resource pool of TCI states; a mode of TCI states, wherein the mode of TCI states includes joint indication or separate indication.

[0168] Optionally, as one embodiment, at least one of the following is met: the resource pool of TCI states is associated with a CORESETPoolIndex; the mode of TCI states is associated with the CORESETPoolIndex; the resource pool of TCI states is associated with the first SRS resource set; the mode of TCI states is associated with the first SRS resource set; the resource pool of TCI states is associated with the second SRS resource set; the mode of TCI states is associated with the second SRS resource set; and the resource pool of TCI states is associated with the mode of TCI states.

[0169] Optionally, as one embodiment, at least one of the following is met: the SRS is associated with a CSI-RS, and the terminal is configured to be uplink and downlink beam joint indication; the CSI-RS associated with the SRS uses a TCI state indicated by the first command; and a QCL relationship associated with the TCI state indicated by the first command does not take effect on the SRS and / or a PUSCH, and the SRS is used for the PUSCH transmission.

[0170] The apparatus 500 according to the embodiments of the present application can refer to the flow of the method 300 corresponding to the embodiments of the present application, and each unit / module in the apparatus 500 and the above-mentioned other operations and / or functions are respectively used to implement the corresponding flow in the method 300, and can achieve the same or equivalent technical effects. For the sake of brevity, it will not be repeated here.

[0171] Optionally, as one embodiment, the separate TCI states include an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI states includes at least one of the following: a CSI-RS associated with an SRS in the second SRS resource set uses the downlink TCI state; the SRS in the second SRS resource set and the SRS in the second SRS resource set associated with a PUSCH all refer to second information and ignore first information, the second information being a power control parameter included or associated with the uplink TCI state, and the first information being information included or associated with the uplink TCI state other than the power control parameter. Figure 6As shown, the embodiments of the present application further provide a communication device 600, which comprises a processor 601, a memory 602, and a program or instruction stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement each process of the above-mentioned SRS transmission method embodiments and achieve the same technical effects. When the communication device 600 is a network side device, the program or instruction is executed by the processor 601 to implement each process of the above-mentioned SRS transmission method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0172] The embodiments of the present application further provide a terminal, which comprises a processor and a communication interface. The processor is configured to determine a sending parameter of an SRS, wherein the sending parameter comprises at least one of a TCI state, a precoding, and a power control parameter. The communication interface is configured to send the SRS according to the sending parameter. The terminal embodiment corresponds to the above-mentioned terminal side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the terminal embodiment and achieve the same technical effects. Specifically, Figure 7 To implement the hardware structure of a terminal according to the embodiments of the present application.

[0173] The terminal 700 comprises, but is not limited to, at least part of the following components: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710, etc.

[0174] Those skilled in the art can understand that the terminal 700 further comprises a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 710 through a power management system, so as to realize the functions of power management, discharge management, and power consumption management through the power management system. Figure 7 The terminal structure shown in the above-mentioned figures does not constitute a limitation on the terminal. The terminal can comprise more or fewer components than those shown in the figures, or combine certain components, or arrange different components, and details are not described herein.

[0175] It should be understood that in the embodiments of the present application, the input unit 704 can include a graphics processor (GPU) 7041 and a microphone 7042. The graphics processor 7041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 can include a display panel 7061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 can include two parts of a touch detection device and a touch controller. The other input devices 7072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0176] In the embodiments of the present application, the radio frequency unit 701 receives downlink data from a network side device and processes the data by the processor 710. In addition, the radio frequency unit 701 sends uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

[0177] The memory 709 can be used to store software programs or instructions and various data. The memory 709 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 709 can include a high-speed random access memory, and can also include a non-transitory memory, which can 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. For example, at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device.

[0178] The processor 710 can include one or more processing units; optionally, the processor 710 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 710.

[0179] The radio frequency unit 701 can be configured to transmit the SRS according to the transmission parameter.

[0180] The processor 710 can be configured to determine the transmission parameter of the SRS, and the transmission parameter includes at least one of the following: a TCI state, a precoding, and a power control parameter.

[0181] In the embodiments of the present application, the terminal determines the transmission parameter of the SRS, and transmits the SRS according to the determined transmission parameter, and the transmission parameter includes at least one of the following: a TCI state, a precoding, and a power control parameter. The embodiments of the present application are beneficial to the effective transmission of the SRS, and further can obtain the transmission parameter of the PUSCH through the SRS measurement, and further improve the performance of the uplink data transmission.

[0182] The terminal 700 provided by the embodiments of the present application can also implement each process of the above-mentioned SRS transmission method embodiments, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0183] The embodiments of the present application also provide a network side device, which includes a processor and a communication interface, the communication interface is configured to receive the SRS, and the SRS is transmitted by a terminal according to a determined transmission parameter, and the transmission parameter includes at least one of the following: a TCI state, a precoding, and a power control parameter. The network side device embodiment is corresponding to the above-mentioned network side device method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

[0184] Specifically, the embodiments of the present application also provide a network side device. As shown in the Figure 8 The network side device 800 includes an antenna 81, a radio frequency device 82, and a baseband device 83. The antenna 81 is connected with the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81, and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent, and sends it to the radio frequency device 82. The radio frequency device 82 processes the received information and sends it out through the antenna 81.

[0185] The above-mentioned frequency band processing device can be located in the baseband device 83, and the method executed by the network side device in the above-mentioned embodiments can be implemented in the baseband device 83. The baseband device 83 includes a processor 84 and a memory 85.

[0186] The baseband device 83 can include at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in the Figure 8 One of the chips is, for example, the processor 84, which is connected with the memory 85 to call the program in the memory 85 and execute the operation of the network side device shown in the above-mentioned method embodiments.

[0187] The baseband device 83 can further include a network interface 86 for interacting information with the radio frequency device 82, which is, for example, a common public radio interface (CPRI).

[0188] Specifically, the network side device of the embodiment of the present application further includes instructions or programs stored on the memory 85 and executable on the processor 84, and the processor 84 invokes the instructions or programs in the memory 85 to execute the method performed by each module shown in the above embodiment and achieve the same technical effects. To avoid repetition, the details are not described here. Figure 5 The method performed by each module shown in the above embodiment and achieve the same technical effects. To avoid repetition, the details are not described here.

[0189] The embodiment of the present application also provides a readable storage medium, and the readable storage medium stores programs or instructions, which are executed by a processor to implement each process of the SRS transmission method embodiment and achieve the same technical effects. To avoid repetition, the details are not described here.

[0190] The processor can be the processor in the terminal described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0191] The embodiment of the present application further provides a chip, and the chip includes a processor and a communication interface. The communication interface is coupled with the processor, and the processor is used to run programs or instructions to implement each process of the SRS transmission method embodiment and achieve the same technical effects. To avoid repetition, the details are not described here.

[0192] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0193] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without further constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently or with intervening action(s) with those involved. In addition, features described in relation to one example can be combined in other examples.

[0194] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be implemented by means of software and the necessary universal hardware platform, of course, can also be implemented by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disc, optical disc), and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network side device, etc.) execute the method described in each embodiment of the present application.

[0195] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative rather than limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope of protection of the claims, which all belong to the protection of the present application.

Claims

1. A method for sounding reference signal (SRS) transmission, the method comprising: The method comprises: A terminal determines a transmission parameter of an SRS, the transmission parameter comprising at least one of: a transmission configuration indication (TCI) state, a precoding, and a power control parameter; The terminal transmits the SRS according to the transmission parameter; The terminal determines the transmission parameter of the SRS, comprising: The terminal determines the transmission parameter of the SRS according to a resource set to which the SRS belongs; The resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set referring to a joint TCI state, and the second SRS resource set referring to a separate TCI state; The first SRS resource set referring to the joint TCI state comprises: SRSs in the first SRS resource set, a CSI-RS associated with the SRSs in the first SRS resource set, and a PUSCH associated with the SRSs in the first SRS resource set, all of which use the joint TCI state; The separate TCI state comprises an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI state comprises at least one of: A CSI-RS associated with SRSs in the second SRS resource set uses the downlink TCI state; SRSs in the second SRS resource set and a PUSCH associated with the SRSs in the second SRS resource set both refer to second information and ignore first information, the second information being a power control parameter included in or associated with the uplink TCI state, and the first information being information other than the power control parameter included in or associated with the uplink TCI state.

2. The method of claim 1, wherein, Before the terminal determines the transmission parameter of the SRS, the method further comprises: The terminal receives a channel state information reference signal (CSI-RS), the CSI-RS being associated with the SRS, and the CSI-RS using a downlink TCI state indicated by a first command; The TCI state indicated by the first command comprises at least one of: A joint TCI state serving as both an uplink TCI state and the downlink TCI state; A separate TCI state comprising an uplink TCI state and the downlink TCI state.

3. The method of claim 2, wherein, The TCI state indicated by the first command is the joint TCI state, the transmission parameter comprises a TCI state, and the terminal determines the transmission parameter of the SRS, comprising: The terminal takes the joint TCI state as the TCI state of the SRS.

4. The method of claim 3, wherein, The CSI-RS and a physical uplink shared channel (PUSCH) both use the joint TCI state, and the SRS is used for transmission of the PUSCH.

5. The method of claim 2, wherein, The TCI state indicated by the first command is the joint TCI state, the transmission parameter comprises a power control parameter, and the terminal determines the transmission parameter of the SRS, comprising: The terminal takes a power control parameter for SRS transmission included in or associated with the joint TCI state as the power control parameter of the SRS.

6. The method of claim 2, wherein, The first command indicates a TCI state as the separate TCI state, the sending parameter includes a power control parameter, and the terminal determines the sending parameter of the SRS includes: The terminal takes the power control parameter for SRS transmission contained or associated by the uplink TCI state as the power control parameter of the SRS.

7. The method of claim 6, wherein, The method further includes: The terminal sends a PUSCH; wherein the sending of the PUSCH refers to a power control parameter for PUSCH transmission contained or associated by the uplink TCI state, and the SRS is used for the PUSCH transmission.

8. The method of claim 7, wherein, The SRS and / or the PUSCH ignore first information, the first information being information contained or associated by the uplink TCI state other than the power control parameter.

9. The method of claim 2, wherein, The sending parameter includes precoding, and the terminal determines the sending parameter of the SRS includes: The terminal calculates the precoding of the SRS according to the CSI-RS.

10. The method of claim 1, wherein, The sending parameter includes a TCI state, and the terminal determines the sending parameter of the SRS includes: The terminal takes the uplink TCI state indicated by the first command as the TCI state of the SRS; The TCI state indicated by the first command includes at least one of: A joint TCI state, which simultaneously serves as a downlink TCI state and the uplink TCI state; A separate TCI state, which includes the uplink TCI state and a downlink TCI state.

11. The method of claim 10, wherein, Before the terminal determines the sending parameter of the SRS, the method further includes: The terminal receives a CSI-RS, the CSI-RS is associated with the SRS, and the CSI-RS does not use the TCI state indicated by the first command; The reference signal of QCL type D in the TCI state is the same as the reference signal in the TCI state associated with the CSI-RS; or The CSI-RS and the reference signal corresponding to QCL in the TCI state are quasi co-located.

12. The method of claim 1, wherein, The SRS has no associated CSI-RS configured, and the terminal determines the sending parameter of the SRS includes: The terminal calculates the precoding used by the SRS according to a target reference signal; wherein the target reference signal is one of: A non-zero power CSI-RS closest to the SRS and associated with the same TCI state as the SRS; A non-zero power CSI-RS other than the closest one to the SRS and associated with the same TCI state as the SRS, the distance being greater than or equal to X time units, X being a positive integer; A CSI-RS in the TCI state indicated by a target resource; A CSI-RS configured or updated by a second command.

13. The method of claim 1, wherein, Before the terminal determines the sending parameter of the SRS, the method further includes that the terminal receives a second command, the second command being used to indicate at least one of: A resource pool of a TCI state; a mode of a TCI state, wherein the mode of the TCI state includes joint indication or separate indication.

14. The method of claim 13, wherein, At least one of the following is met: The resource pool of the TCI state is associated with a control resource set resource pool index CORESETPoolIndex; The mode of the TCI state is associated with a CORESETPoolIndex; The resource pool of the TCI state is associated with the first SRS resource set; The mode of the TCI state is associated with the first SRS resource set; The resource pool of the TCI state is associated with the second SRS resource set; The mode of the TCI state is associated with the second SRS resource set; The resource pool of the TCI state is associated with the mode of the TCI state.

15. The method of claim 1, wherein, At least one of the following is met: The SRS is associated with a CSI-RS, and the terminal is configured to perform joint uplink and downlink beam indication; The CSI-RS associated with the SRS uses a TCI state indicated by a first command; The QCL relationship associated with the TCI state indicated by the first command does not take effect on the SRS and / or PUSCH, and the SRS is used for the PUSCH transmission.

16. A method for transmission of SRS, the method comprising: Comprise: The network side device receives the SRS, which is sent by the terminal according to the determined transmission parameter, and the transmission parameter includes at least one of the following: TCI state, precoding, power control parameter; The transmission parameter of the SRS is determined by the terminal according to the resource set to which the SRS belongs; Wherein, the resource set includes a first SRS resource set and a second SRS resource set, the first SRS resource set refers to a joint TCI state, and the second SRS resource set refers to a separate TCI state; Wherein, the first SRS resource set referring to the joint TCI state includes: the SRS in the first SRS resource set, the CSI-RS associated with the SRS in the first SRS resource set, and the PUSCH associated with the SRS in the first SRS resource set all use the joint TCI state; The separate TCI state includes an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI state includes at least one of the following: The CSI-RS associated with the SRS in the second SRS resource set uses the downlink TCI state; The SRS in the second SRS resource set, the SRS in the second SRS resource set, and the PUSCH associated with the SRS in the second SRS resource set all refer to the second information and ignore the first information, the second information is the power control parameter included or associated with the uplink TCI state, and the first information is information other than the power control parameter included or associated with the uplink TCI state.

17. The method of claim 16, wherein, Before the network side device receives the SRS, the method further comprises: The network side device sends a CSI-RS, which is associated with the SRS, and the CSI-RS uses a downlink TCI state indicated by a first command; Wherein, the TCI state indicated by the first command includes at least one of the following: The joint TCI state, which simultaneously serves as an uplink TCI state and a downlink TCI state; The separate TCI state, which includes an uplink TCI state and a downlink TCI state.

18. The method of claim 17, wherein, The TCI state indicated by the first command is the joint TCI state; The TCI state of the SRS is the joint TCI state; and / or The power control parameter of the SRS is a power control parameter for SRS transmission contained or associated by the joint TCI state.

19. The method of claim 17, wherein, The TCI state indicated by the first command is the separate TCI state; The power control parameter of the SRS is a power control parameter for SRS transmission contained or associated by the uplink TCI state.

20. The method of claim 19, wherein, After the network side device receives the SRS, the method further comprises: The network side device receives the PUSCH; wherein the transmission of the PUSCH refers to a power control parameter for PUSCH transmission contained or associated by the uplink TCI state, and the SRS is used for the PUSCH transmission.

21. The method of claim 16, wherein, The TCI state of the SRS is the uplink TCI state indicated by the first command; The TCI state indicated by the first command comprises at least one of the following: The joint TCI state simultaneously serves as a downlink TCI state and the uplink TCI state; The separate TCI state comprises the uplink TCI state and the downlink TCI state.

22. The method of claim 21, wherein, Before the network side device receives the SRS, the method further comprises: The network side device transmits a CSI-RS, the CSI-RS is associated with the SRS, and the CSI-RS does not use the TCI state indicated by the first command; The reference signal of QCL type D in the TCI state is the same as the reference signal in the TCI state associated with the CSI-RS; or The CSI-RS and the reference signal corresponding to QCL in the TCI state are quasi co-located.

23. The method of claim 16, wherein, The SRS does not configure an associated CSI-RS, and the precoding used by the SRS is calculated by the terminal according to a target reference signal; wherein the target reference signal is one of the following: The non-zero power CSI-RS closest to the SRS and associated with the same TCI state as the SRS; The non-zero power CSI-RS farthest from the SRS and associated with the same TCI state as the SRS, X is a positive integer; The CSI-RS in the TCI state indicated by the target resource; The CSI-RS configured or updated by the second command.

24. The method of claim 16, wherein, Before the network side device receives the SRS, the method further comprises: the network side device transmits a second command, the second command is used to indicate at least one of the following: The resource pool of the TCI state; the mode of the TCI state, wherein the mode of the TCI state comprises joint indication or separate indication.

25. The method of claim 24, wherein, At least one of the following is met: The resource pool of the TCI state is associated with CORESETPoolIndex; The mode of the TCI state is associated with CORESETPoolIndex; The resource pool of the TCI state is associated with the first SRS resource set; The mode of the TCI state is associated with the first SRS resource set; The resource pool of the TCI state is associated with the second SRS resource set; a pattern of the TCI state is associated with the second SRS resource set; a resource pool of the TCI state is associated with the pattern of the TCI state.

26. The method of claim 16, wherein, at least one of the following is met: the SRS is associated with a CSI-RS, and the terminal is configured to perform joint indication of uplink and downlink beams; the CSI-RS associated with the SRS uses a TCI state indicated by a first command; a QCL relationship associated with the TCI state indicated by the first command does not take effect on the SRS and / or PUSCH, and the SRS is used for the PUSCH transmission.

27. An apparatus for transmitting SRS, the apparatus comprising: comprising: a determination module configured to determine a transmission parameter of an SRS, the transmission parameter comprising at least one of the following: a TCI state, a precoding, a power control parameter; a sending module configured to send the SRS according to the transmission parameter; wherein the determination module is further configured to: determine the transmission parameter of the SRS according to a resource set to which the SRS belongs; wherein the resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set referring to a joint TCI state, and the second SRS resource set referring to a separate TCI state; wherein the first SRS resource set referring to the joint TCI state comprises that an SRS in the first SRS resource set, a CSI-RS associated with the SRS in the first SRS resource set, and a PUSCH associated with the SRS in the first SRS resource set all use the joint TCI state; the separate TCI state comprises an uplink TCI state and a downlink TCI state, and the second SRS resource set referring to the separate TCI state comprises at least one of the following: a CSI-RS associated with an SRS in the second SRS resource set uses the downlink TCI state; an SRS in the second SRS resource set, and a PUSCH associated with the SRS in the second SRS resource set all refer to second information and ignore first information, the second information being a power control parameter included or associated with the uplink TCI state, and the first information being information other than the power control parameter included or associated with the uplink TCI state.

28. An apparatus for transmitting SRS, the apparatus comprising: comprising: a receiving module configured to receive an SRS, the SRS being sent by a terminal according to a determined transmission parameter, the transmission parameter comprising at least one of the following: a TCI state, a precoding, and a power control parameter; the transmission parameter of the SRS is determined by the terminal according to a resource set to which the SRS belongs; wherein the resource set comprises a first SRS resource set and a second SRS resource set, the first SRS resource set referring to a joint TCI state, and the second SRS resource set referring to a separate TCI state; wherein the first SRS resource set referring to the joint TCI state comprises that an SRS in the first SRS resource set, a CSI-RS associated with the SRS in the first SRS resource set, and a PUSCH associated with the SRS in the first SRS resource set all use the joint TCI state; The separated TCI states comprise uplink TCI states and downlink TCI states, and the second SRS resource set references separated TCI states comprising at least one of the following: The SRS in the second SRS resource set is associated with a CSI-RS using the downlink TCI state; The SRS in the second SRS resource set and the SRS in the second SRS resource set associated with a PUSCH both reference second information and ignore first information, the second information being a power control parameter contained in or associated with the uplink TCI state, and the first information being information other than the power control parameter contained in or associated with the uplink TCI state.

29. A terminal, characterized by A processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions being executed by the processor to implement the SRS transmission method of any one of claims 1 to 15.

30. A network-side device, comprising: A processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions being executed by the processor to implement the SRS transmission method of any one of claims 16 to 26.

31. A readable storage medium, characterized by, A readable storage medium storing a program or instructions, the program or instructions being executed by a processor to implement the SRS transmission method of any one of claims 1 to 15, or to implement the SRS transmission method of any one of claims 16 to 26.

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