Method and apparatus for enhancing sounding reference signal transmission

Abstract

The present disclosure describes methods, systems, and devices for enhancing the transmission of a sounding reference signal (SRS) for a user equipment (UE). One method includes: receiving downlink control information (DCI) from a network base station via a physical downlink control channel (PDCCH) by the UE, the DCI being configured to trigger the transmission of the SRS according to at least one parameter transmitted by the SRS. Another method includes: sending downlink control information (DCI) to the UE via a physical downlink control channel (PDCCH) by the network base station, the DCI being configured to trigger the transmission of the SRS according to at least one parameter transmitted by the SRS.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to methods and devices for enhancing Sounding Reference Signal (SRS) transmission. Background Art

[0002] Wireless communication technology is moving the world towards an increasingly interconnected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user equipment and wireless access network nodes (including but not limited to wireless base stations). The new generation of networks is expected to provide high-speed, low-latency and ultra-reliable communication capabilities and meet the requirements of different industries and users. Sounding reference signals (SRS) can be transmitted between user equipment and base stations to provide a means for the network to estimate channel states for better communication. There are some difficulties and / or problems associated with scheduling SRS transmissions. The present disclosure may solve at least some of the difficulties and / or problems associated with existing systems to improve the performance of wireless communications. Summary of the invention

[0003] The present document relates to methods, systems, and devices for wireless communications, and more particularly, to methods, systems, and devices for enhancing Sounding Reference Signal (SRS) transmission.

[0004] In one embodiment, the present disclosure describes a method for wireless communication. The method includes enhancing the transmission of a sounding reference signal (SRS) for a user equipment (UE) by: the UE receives downlink control information (DCI) from a network base station via a physical downlink control channel (PDCCH), the DCI being configured to trigger the transmission of the SRS according to at least one parameter of the SRS transmission.

[0005] In another embodiment, the present disclosure describes a method for wireless communication. The method includes enhancing a sounding reference signal (SRS) transmission for a user equipment (UE) by: a network base station sends downlink control information (DCI) to the UE via a physical downlink control channel (PDCCH), the DCI being configured to trigger the SRS transmission according to at least one parameter of the SRS transmission.

[0006] In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0007] In some other embodiments, a device for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0008] In some other embodiments, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to perform the above method.

[0009] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 An example of a wireless communication system including a radio network node and one or more user equipments is shown.

[0011] Figure 2 An example of a network node is shown.

[0012] Figure 3 An example of a user device is shown.

[0013] Figure 4 A flow chart of a method for wireless communication is shown.

[0014] Figure 5 A flow chart of another method for wireless communication is shown.

[0015] Figure 6 A challenge or problem to be solved in a wireless communication system is shown. DETAILED DESCRIPTION

[0016] The present disclosure will be described in detail below with reference to the accompanying drawings, which form a part of the present disclosure and show specific examples of embodiments by way of illustration. However, it is noted that the present disclosure can be implemented in a variety of different forms, and therefore, the subject matter covered or claimed is intended to be construed as not limited to any embodiment to be set forth below.

[0017] Throughout the specification and claims, terms may have nuanced meanings that are indicated or implied in the context, beyond the explicitly stated meanings. Likewise, the phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. The phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. For example, the claimed subject matter is intended to include, in whole or in part, a combination of exemplary embodiments or embodiments.

[0018] In general, terms can be understood at least in part according to the usage in the context. For example, terms such as "and", "or" or "and / or" as used herein can include multiple meanings, which can depend at least in part on the context in which the terms are used. Generally, "or" is intended to represent A, B and C (here for inclusive meanings) and A, B or C (here for exclusive meanings) if used to associate a list, such as A, B or C. In addition, the terms "one or more" or "at least one" as used herein, at least in part depending on the context, can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, terms such as "one", "an" or "the" can also be understood to convey singular usage or to convey plural usage, which depends at least in part on the context. In addition, the term "based on" or "determined by..." can be understood to not necessarily be intended to convey a set of exclusive factors, but can allow the existence of additional factors that are not necessarily explicitly described, and again, this depends at least in part on the context.

[0019] The present disclosure describes methods and apparatus for enhancing sounding reference signal (SRS) transmission.

[0020] New Generation (NG) mobile communication systems are driving the world towards an increasingly connected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user devices and wireless access network nodes (including but not limited to wireless base stations). NG networks are expected to provide high-speed, low-latency and ultra-reliable communication capabilities and meet the requirements of different industries and users.

[0021] The fourth generation of mobile communication technology (4th Generation, 4G) Long-Term Evolution (Long-Term Evolution, LTE) or LTE-Advance (LTE-A) and the fifth generation of mobile communication technology (5th Generation, 5G) are facing more and more demands. Based on this development trend, 4G and 5G systems can develop support for enhanced mobile broadband (enhanced MobileBroadband, eMBB), ultra-reliable low-latency communication (Ultra-Reliable Low-Latency Communication, URLLC) and massive machine type communication (massive Machine-Type Communication, mMTC) features.

[0022] Sounding reference signal (SRS) transmission between user equipment (UE) and radio network nodes can be used to obtain downlink (DL) channel state information (CSI) and / or uplink (UL) CSI, which may achieve excellent downlink and / or uplink performance. For example, for a time division duplex (TDD) system with antenna calibration, channel reciprocity can be used to measure DL CSI based on uplink SRS measurement, and then enable multiple input multiple output (MIMO) performance, auxiliary DL beamforming and / or auxiliary DL precoding.

[0023] An uplink sounding reference signal (SRS) may be a user equipment specific signal and is sent from a user equipment (UE) to a radio network node. SRS capacity may be an issue due to the potentially large number of active UEs in a cell served by a radio network node and the mobility of these large number of active UEs. Considering that the transmit power of a UE is typically much lower than the transmit power of a radio network node, the UE may be limited in allocating transmit power to SRS resources. The relatively low power may result in a relatively low signal to interference and noise ratio (SINR), which may result in poor measurements of uplink CSI and / or downlink CSI. The present disclosure describes one or more embodiments to address at least one or more of the above-mentioned problems.

[0024] In the New Radio (NR) access system, more and more UEs can be located in a serving cell and receive signals from or send signals to a radio network node. For the transmission of aperiodic SRS, existing systems may have some problems and / or difficulties, wherein conflicts may occur between SRS transmissions from different UEs. In the present disclosure, various embodiments are described to increase the flexibility of SRS transmission and enhance SRS transmission.

[0025] In the NR wireless system, SRS can be a signal for measuring the CSI of a channel between a communication node (e.g., a network base station) and a communication terminal device (e.g., a UE). In the LTE system, the communication terminal device periodically sends UL SRS on the last data symbol of a subframe based on parameters indicated by the communication node (e.g., frequency band, frequency domain position, sequence cyclic shift, period, subframe offset, etc.). The communication node determines the CSI of the UE's UL channel based on the received SRS, and performs operations (e.g., frequency selection scheduling and closed-loop power control) according to the determined CSI.

[0026] According to new developments in LTE, (one or more) non-precoded SRS (i.e., antenna-specific SRS) may be used in UL communications, and the demodulation reference signal (DMRS) of the physical UL shared channel (Physical Uplink Shared Channel, PUSCH) may perform precoding. By receiving the non-precoded SRS, the communication node can estimate the original CSI, which may not be acquired based on the precoded DMRS. In this case, the communication terminal device may require more SRS resources when using multiple antennas to send non-precoded SRS, resulting in a reduction in the number of communication terminal devices that are simultaneously multiplexed in the system. The communication terminal device can send SRS configured by high-level signaling (type-0 trigger) or downlink control information (DCI) (type-1 trigger). The SRS transmission configured by high-level signaling is periodic, while the SRS transmission configured by DCI is non-periodic. LTE-A version 10 adds non-periodic SRS, and may improve the utilization of SRS resources and the flexibility of scheduling SRS to a certain extent.

[0027] According to New Radio (NR) Release 15, the uses of SRS can be divided into the following categories: beam management (codebook-based, non-codebook-based) and antenna switching. NR supports beam indication by notifying the UE that a physical uplink shared channel (PDSCH) and / or PDCCH transmission can use the same transmit beam as the configured reference signal (CSI-RS or synchronization signal (SS) block). More formally, it may mean notifying the device to use the same spatial filter as the configured reference signal to transmit a certain PDSCH and / or PDCCH. In more detail, beam indication can be based on the configuration and downlink signaling of the Transmission Configuration Indication (TCI) state. Among other things, each TCI state can include information about the reference signal (CSI-RS or SS block). By associating a certain downlink transmission (PDCCH or PDSCH) with a certain TCI, the network can inform the device that it can assume that the downlink transmission is done using the same spatial filter as the reference signal associated with this TCI.

[0028] The present disclosure describes various embodiments for enhancing SRS transmission between a UE and a wireless network. In one embodiment, the wireless network may include at least one of a base station in a macro cell, a base station or a transmission point in a micro cell, a transmission point in a high frequency communication system, a transmission point in the Internet of Things, a satellite transmission point, etc. In another embodiment, the UE may include at least one of a smart phone, a portable device, a vehicle, a transmission point in a communication system (e.g., a satellite communication system), etc.

[0029] Figure 1 A wireless communication system 100 is shown, which includes a radio network node 118 and one or more user equipment (UE) 110. The radio network node may include a network base station, which may be a nodeB (NB, e.g., gNB) in a mobile telecommunication environment. Each UE may wirelessly communicate with the radio network node via one or more radio channels 115. For example, a first UE 110 may wirelessly communicate with the radio network node 118 via a channel including a plurality of radio channels during a specific time period. The network base station 118 may send high-layer signaling to the UE 110. The high-layer signaling may include configuration information for communication between the UE and the base station. In one embodiment, the high-layer signaling may include a Radio Resource Control (RRC) message.

[0030] Figure 2An example of an electronic device 200 for implementing a network base station is shown. The example electronic device 200 may include wireless transmitting / receiving (Tx / Rx) circuitry 208 to send / receive communications with UEs and / or other base stations. The electronic device 200 may also include network interface circuitry 209 to enable the base station to communicate with other base stations and / or a core network (e.g., optical or wired interconnects, Ethernet, and / or other data transmission media / protocols). The electronic device 200 may include an input / output (I / O) interface 206 to communicate with an operator or the like.

[0031] The electronic device 200 may also include a system circuit 204. The system circuit 204 may include (one or more) processors 221 and / or a memory 222. The memory 222 may include an operating system 224, instructions 226, and parameters 228. The instructions 226 may be configured for one or more of the processors 124 to perform the functions of the network node. The parameters 228 may include parameters that support the execution of the instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping allocations, and / or other parameters.

[0032] Figure 3An example of an electronic device for implementing a terminal device 300 (e.g., a user equipment (UE)) is shown. UE 300 may be a mobile device, such as a smart phone or a mobile communication module provided in a vehicle. UE 300 may include a communication interface 302, a system circuit 304, an input / output (I / O) interface 306, a display circuit 308, and a storage device 309. The display circuit may include a user interface 310. System circuit 304 may include any combination of hardware, software, firmware, or other logic / circuits. System circuit 304 may be implemented, for example, with one or more systems on chip (System on Chip, SoC), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), discrete analog and digital circuits, and other circuits. System circuit 304 may be part of an implementation of any desired function in UE 300. In this regard, the system circuit 304 may include, for example, logic to facilitate the following operations: decoding and playing music and video, such as MP3, MP4, MPEG, AVI, FLAC, AC3 or WAV decoding and playback; running applications; accepting user input; saving and retrieving application data; establishing, maintaining and terminating cellular phone calls or data connections for, for example, Internet connections; establishing, maintaining and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310. The user interface 310 and the input / output (I / O) interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 may include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., infrared sensors), and other types of inputs.

[0033] See also Figure 3, the communication interface 302 may include radio frequency (RF) transmission (Tx) and reception (Rx) circuits 316 that handle the transmission and reception of signals through one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver that includes modulation / demodulation circuits, digital to analog converters (DAC), shaping tables, analog to digital converters (ADC), filters, waveform shapers, filters, preamplifiers, power amplifiers, and / or other logic for transmitting and receiving through one or more antennas or (for some devices) through a physical (e.g., wired) medium. The transmitted and received signals may follow any of a variety of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), frequency channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA) +, 4G / Long Term Evolution (LTE), and 5G standards. However, the techniques described below are applicable to other wireless communication technologies, whether produced by the 3rd Generation Partnership Project (3GPP), GSM Association, 3GPP2, IEEE, or other partners or standards bodies.

[0034] See also Figure 3 , the system circuit 304 may include one or more processors 321 and a memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to implement the desired functions of the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G or other data that will be sent by the UE 300 through the communication interface 302 or has been received through the communication interface 302. In various embodiments, the system power of the UE 300 may be supplied by a power storage device such as a battery or a transformer.

[0035] The present disclosure describes the following embodiments, which may be partially or completely described in the above Figures 2 to 3 The method is implemented on a network base station and / or user equipment described in the embodiment.

[0036] See also Figure 4 , the present disclosure describes an embodiment of a method 400 for enhancing the transmission of a sounding reference signal (SRS) for a user equipment (UE). The method 400 may include step 410: receiving, by the UE, downlink control information (DCI) from a network base station via a physical downlink control channel (PDCCH), the DCI being configured to trigger the transmission of the SRS according to at least one parameter of the SRS transmission.

[0037] See also Figure 5 , the present disclosure describes an embodiment of a method 500 for enhancing the transmission of a sounding reference signal (SRS) for a user equipment (UE). The method 500 may include step 510: a network base station transmits downlink control information (DCI) to the UE via a physical downlink control channel (PDCCH), the DCI being configured to trigger the transmission of the SRS according to at least one parameter of the SRS transmission.

[0038] In various implementations of various embodiments, the SRS transmission may be aperiodic SRS transmission. The DCI may include an uplink shared channel (UL-SCH) field value equal to "0" and no channel state information (CSI) request. In another implementation, the DCI may include a UL-SCH field value equal to "0" and a CSI request.

[0039] In one embodiment, in order to improve the flexibility of SRS transmission, one or more parameters of SRS transmission may be indicated by DCI. The DCI format may be used to schedule a physical uplink shared channel (PUSCH).

[0040] Optionally, in one implementation of this embodiment, one or more parameters for SRS transmission may include at least one of the following parameters: cyclic shift, transmit comb offset, transmit power control (Transmission Power Control, TPC) command, time slot offset for SRS transmission, time domain position of SRS resources, frequency domain position of SRS resources, component carrier group (Component Carrier, CC) or service cell group for SRS transmission, transmission configuration indication for SRS, or spatial relationship information for SRS transmission.

[0041] Optionally, in another embodiment, for example but not limited to, at least one of the following fields in the DCI may be used to indicate whether one or more parameters sent by the SRS are indicated by the DCI.

[0042] In method 1, one bit in the DCI may be used to indicate whether one or more parameters of SRS transmission are indicated by the DCI. In one embodiment, the one bit may be a newly added field in the DCI. In another embodiment, the one bit may be an existing field in the DCI, which may include one of the following fields: an uplink / supplementary uplink (UL / SUL) indicator field, a frequency hopping flag field, a priority indicator field, an invalid symbol mode indicator field, or a minimum applicable scheduling offset indicator field. For example, a value of "1" in the field may indicate that the above-mentioned SRS transmission parameters are indicated by the DCI, and a value of "0" may indicate that the above-mentioned SRS transmission parameters are configured by high-level parameters (e.g., RRC messages). For another example, a value of "0" may indicate that the above-mentioned SRS transmission parameters are indicated by the DCI, and a value of "1" may indicate that the above-mentioned SRS transmission parameters are configured by high-level parameters.

[0043] In method 2, a DCI format with a cyclic redundancy check (CRC) scrambled by a predefined radio network temporary identifier (RNTI) may be used to indicate whether one or more parameters sent by the SRS are indicated by the DCI. For example, but not limited to, the predefined RNTI may include a dedicated SRS RNTI (Dedicated SRS RNTI, D-SRS-RNTI).

[0044] In method 3, the modulation and coding scheme field in the DCI can be used to indicate whether one or more parameters of SRS transmission are indicated by the DCI. For example, when the value of the modulation and coding scheme field is not equal to "00000", the modulation and coding scheme field in the DCI can indicate that the SRS transmission parameters are indicated by the DCI, otherwise the SRS transmission parameters are configured by high-level parameters. For another example, when the value of the modulation and coding scheme field is equal to "00000", the modulation and coding scheme field in the DCI can indicate that the SRS transmission parameters are indicated by the DCI, otherwise the SRS transmission parameters are configured by high-level parameters.

[0045] Optionally and / or alternatively, in another embodiment, in order to improve the flexibility of SRS transmission, one or more parameters of SRS transmission may be indicated by DCI, wherein the DCI format may be used for scheduling of PUSCH. In one embodiment, the one or more parameters of SRS transmission may include at least one of the following parameters: cyclic shift, transmit comb offset, transmit power control (TPC) command, time slot offset for SRS transmission, time domain position of SRS resources, frequency domain position of SRS resources, component carrier group (CC) or service cell group for SRS transmission, transmission configuration indication for SRS, or spatial relationship information for SRS transmission.

[0046] Optionally, in one embodiment, for example but not limited to, the DCI includes at least one of the following fields to indicate at least one parameter of SRS transmission: a modulation and coding scheme field for indicating a time slot offset for SRS transmission; a Hybrid Automatic Repeat Request (HARQ) process number field for indicating a cyclic shift for an SRS sequence; a frequency domain resource allocation field for indicating a frequency domain position of an SRS; a time domain resource allocation field for indicating at least one parameter of a time domain position of an SRS; an antenna port field, or a precoding information and layer number field for indicating a transmission configuration indication; a redundant version field for indicating a transmission comb offset; a carrier indicator field for indicating a component carrier group (CC) or a service cell group for SRS transmission; a TPC command field for a scheduled physical uplink shared channel (PUSCH) for indicating a TPC command for an SRS. In another embodiment, the at least one parameter of the time domain position of the SRS includes at least one of the following parameters: a starting position of an SRS resource, a number of symbols of an SRS resource, or a repetition factor in an SRS resource. Optionally, in another implementation, the sending configuration indication is used to select a configuration of spatial relationship information, where the spatial relationship information is used for SRS sending.

[0047] See also Figure 6 , a time slot 610 with an offset of 2 is configured in the aperiodic SRS resource set for the UE through high-layer RRC signaling, and the time slot 610 indicated by the time slot offset may have been modified as a downlink time slot by DCI, which is used to notify the time slot format. As a result of this problem, the UE may not send an aperiodic SRS 620.

[0048] Optionally and / or alternatively, another embodiment for at least solving the above-mentioned problems and / or difficulties is described. When a non-periodic SRS is triggered by a DCI, the DCI has UL-SCH=0 and has no or a CSI request, and the time slot offset can be indicated by one of the following fields in the DCI: modulation and coding scheme field, HARQ process number field, SRS resource indicator field, frequency domain resource allocation field, time domain resource allocation field, first downlink allocation index field or second downlink allocation index field, antenna port field, or precoding information and layer number field. For example, for a non-periodic SRS resource set triggered by DCI in time slot n, the non-periodic SRS resource set can be sent on the (k+1)th valid time slot counting from time slot n, where k can be the value of the time slot offset indicated by the DCI, or k can be determined by both the value of the time slot offset indicated by the DCI and the value of the time slot offset configured by the higher layer. Optionally, in another embodiment, a time slot may be considered valid if there are sufficient (one or more) available UL symbols for (one or more) configured time domain positions in the time slot for all SRS resources. Optionally, in another embodiment, a minimum timing requirement between the triggering PDCCH and all SRS resources in the resource set may need to be met.

[0049] Optionally and / or alternatively, in another embodiment, in order to improve the flexibility of SRS transmission, the UE may be configured with one or more parameter sets. In one embodiment, the UE may be configured with multiple parameter sets. In another embodiment, one of the multiple parameter sets may be indicated by at least one of the following fields in the DCI: antenna port field, SRS resource indicator field, precoding information and layer number field, or HARQ process number field.

[0050] In another embodiment, the multiple parameter sets may include at least one of the following parameter sets: an SRS-SpatialRelationInfo parameter set, an SRS-SpatialRelationInfoPos-r16 parameter set, or a Transmission Configuration Indication-State (TCI-State) parameter set.

[0051] For example but not limited to, the SRS-SpatialRelationInfo parameter set may include the following contents.

[0052]

[0053]

[0054] The present disclosure describes methods, apparatus, and computer-readable media for wireless communication. The present disclosure solves the problem of SRS transmission between UE and network base station. The methods, devices, and computer-readable media described in the present disclosure may improve the flexibility of SRS transmission and enhance the performance of SRS transmission between user equipment and base station, thereby improving efficiency and overall performance. The methods, devices, and computer-readable media described in the present disclosure may improve the overall efficiency of wireless communication systems.

[0055] References throughout this specification to features, advantages, or similar language do not mean that all features and advantages that can be achieved using the present solution should be or are included in any single embodiment of the present solution. Rather, language referring to features and advantages is understood to mean that a particular feature, advantage, or characteristic described in conjunction with an embodiment is included in at least one embodiment of the present solution. Thus, descriptions of features and advantages and similar language throughout the specification may, but do not necessarily, refer to the same embodiment.

[0056] Furthermore, the features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. One of ordinary skill in the relevant art will recognize, based on the description herein, that the present solution may be implemented without one or more of the particular features or advantages of a particular embodiment. In other cases, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.

Claims

1. A method for wireless communication, comprising: The transmission of a sounding reference signal SRS to a user equipment UE is enhanced by: The UE receives downlink control information DCI from a network base station through a physical downlink control channel PDCCH, where the DCI is configured to trigger the SRS transmission according to at least one parameter of the SRS transmission, The DCI includes at least one of the following: The value of the uplink shared channel UL-SCH field is equal to "0" and there is no channel state information CSI request, or The value of the UL-SCH field is equal to "0" and has the CSI request.

2. The method according to claim 1, wherein: The at least one parameter sent by the SRS includes at least one of the following: Circular shift, Send comb offset, Send power control TPC command, The time slot offset for SRS transmission, The temporal location of the SRS resource, The frequency domain location of the SRS resource, For the component carrier group CC or serving cell group sent by SRS, An indication of the transmission configuration of the SRS, or Spatial relationship information sent for SRS.

3. The method according to any one of claims 1 to 2, wherein: In response to at least one of the following, the at least one parameter of the SRS transmission is indicated by the DCI: The bits in the DCI are predefined values, The DCI has a DCI format, wherein the DCI format has a cyclic redundancy check CRC scrambled by a predefined radio network temporary identifier RNTI, or The Modulation and Coding Scheme field satisfies a predefined condition.

4. The method according to claim 3, wherein: The bit in the DCI is one of the following fields in the DCI: Uplink / supplementary uplink UL / SUL indicator field, Frequency Hopping Flag field, The priority indicator field, Invalid Symbol Mode Indicator field, or A minimum applicable scheduling offset indicator field; and The predefined value includes a value "1" or a value "0".

5. The method according to claim 3, wherein: The predefined RNTI includes a dedicated SRS RNTI (D-SRS-RNTI).

6. The method according to claim 3, wherein: The predefined condition for the modulation and coding scheme field comprises at least one of the following: The value of the Modulation and Coding Scheme field is not equal to "00000", or The value of the modulation and coding scheme field is equal to "00000".

7. The method according to any one of claims 1 to 6, wherein: The DCI includes at least one of the following fields to indicate the at least one parameter of the SRS transmission: The modulation and coding scheme field is used to indicate the time slot offset for SRS transmission. The Hybrid Automatic Repeat Request HARQ process number field is used to indicate the cyclic shift for the SRS sequence. The frequency domain resource allocation field is used to indicate the frequency domain location of the SRS. The time domain resource allocation field is used to indicate at least one parameter of the time domain position of the SRS. The antenna port field, or the precoding information and layer number field, is used to indicate the sending configuration indication, The carrier indicator field is used to indicate the component carrier group CC or serving cell group for SRS transmission. Redundancy version field, used to indicate the send comb offset, or The TPC command field for the scheduled physical uplink shared channel PUSCH is used to indicate the TPC command for the SRS.

8. The method according to claim 7, wherein: The at least one parameter of the time domain position of the SRS includes at least one of the following parameters: The starting position of the SRS resource, The number of symbols of the SRS resource, or The repetition factor in the SRS resource.

9. The method according to claim 7, wherein: The transmission configuration indication is used to select the configuration of the spatial relationship information transmitted for the SRS.

10. The method according to any one of claims 1 to 9, wherein: The time slot offset for the SRS transmission is indicated by one of the following fields in the DCI: Modulation and Coding Scheme field, HARQ process number field, SRS resource indicator field, Frequency domain resource allocation field, Time domain resource allocation field, The first downlink allocation index field or the second downlink allocation index field, Antenna Port field, or Precoding information and layer number fields.

11. The method according to any one of claims 1 to 10, wherein: The UE is pre-configured with a plurality of parameter sets for the SRS transmission.

12. The method according to claim 11, wherein: One of the plurality of parameter sets is indicated by at least one of the following fields in the DCI: Antenna Port field, SRS resource indicator field, Precoding information and layer number fields, or HARQ process number field.

13. The method according to claim 11, wherein: The plurality of parameter sets include at least one of the following parameter sets: SRS-SpatialRelationInfo parameter set, SRS-SpatialRelationInfoPos-r16 parameter set, or Send configuration indication state TCI-State parameter set.

14. A method for wireless communication, comprising: The transmission of a sounding reference signal SRS to a user equipment UE is enhanced by: A network base station sends downlink control information DCI to the UE through a physical downlink control channel PDCCH, where the DCI is configured to trigger the SRS transmission according to at least one parameter sent by the SRS, The DCI includes at least one of the following: The value of the uplink shared channel UL-SCH field is equal to "0" and there is no channel state information CSI request, or The value of the UL-SCH field is equal to "0" and has the CSI request.

15. The method according to claim 14, wherein: The at least one parameter sent by the SRS includes at least one of the following: Circular shift, Send comb offset, Send power control TPC command, The time slot offset for SRS transmission, The temporal location of the SRS resource, The frequency domain location of the SRS resource, For the component carrier group CC or serving cell group sent by SRS, An indication of the transmission configuration of the SRS, or Spatial relationship information sent for SRS.

16. A method according to any one of claims 14 to 15, wherein: In response to at least one of the following, the at least one parameter of the SRS transmission is indicated by the DCI: The bits in the DCI are predefined values, The DCI has a DCI format, wherein the DCI format has a cyclic redundancy check CRC scrambled by a predefined radio network temporary identifier RNTI, or The Modulation and Coding Scheme field satisfies a predefined condition.

17. The method of claim 16, wherein: The bit in the DCI is one of the following fields in the DCI: Uplink / supplementary uplink UL / SUL indicator field, Frequency Hopping Flag field, The priority indicator field, Invalid Symbol Mode Indicator field, or A minimum applicable scheduling offset indicator field; and The predefined value includes a value "1" or a value "0".

18. The method of claim 16, wherein: The predefined RNTI includes a dedicated SRS RNTI (D-SRS-RNTI).

19. The method of claim 16, wherein: The predefined condition for the modulation and coding scheme field comprises at least one of the following: The value of the Modulation and Coding Scheme field is not equal to "00000", or The value of the modulation and coding scheme field is equal to "00000".

20. The method according to any one of claims 14 to 19, wherein: The DCI includes at least one of the following fields to indicate the at least one parameter of the SRS transmission: The modulation and coding scheme field is used to indicate the time slot offset for SRS transmission. The Hybrid Automatic Repeat Request HARQ process number field is used to indicate the cyclic shift for the SRS sequence. The frequency domain resource allocation field is used to indicate the frequency domain location of the SRS. The time domain resource allocation field is used to indicate at least one parameter of the time domain position of the SRS. The antenna port field, or the precoding information and layer number field, is used to indicate the sending configuration indication, The carrier indicator field is used to indicate the component carrier group CC or serving cell group for SRS transmission. Redundancy version field, used to indicate the send comb offset, or The TPC command field for the scheduled physical uplink shared channel PUSCH is used to indicate the TPC command for the SRS.

21. The method of claim 20, wherein: The at least one parameter of the time domain position of the SRS includes at least one of the following parameters: The starting position of the SRS resource, The number of symbols of the SRS resource, or The repetition factor in the SRS resource.

22. The method of claim 20, wherein: The transmission configuration indication is used to select the configuration of the spatial relationship information transmitted for the SRS.

23. A method according to any one of claims 14 to 22, wherein: The time slot offset for the SRS transmission is indicated by one of the following fields in the DCI: Modulation and Coding Scheme field, HARQ process number field, SRS resource indicator field, Frequency domain resource allocation field, Time domain resource allocation field, The first downlink allocation index field or the second downlink allocation index field, Antenna Port field, or Precoding information and layer number fields.

24. A method according to any one of claims 14 to 23, wherein: The UE is pre-configured with a plurality of parameter sets for the SRS transmission.

25. The method of claim 24, wherein: One of the plurality of parameter sets is indicated by at least one of the following fields in the DCI: Antenna Port field, SRS resource indicator field, Precoding information and layer number fields, or HARQ process number field.

26. The method of claim 24, wherein: The plurality of parameter sets include at least one of the following parameter sets: SRS-SpatialRelationInfo parameter set, SRS-SpatialRelationInfoPos-r16 parameter set, or Send configuration indication state TCI-State parameter set.

27. A wireless communication device, comprising a processor, wherein: The processor is configured to implement the method of any one of claims 1 to 26.

28. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 26.

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