CN114070501B

CN114070501B - Method and equipment for sending aperiodic sounding reference signal

Info

Publication number: CN114070501B
Application number: CN202010761941.2A
Authority: CN
Inventors: 沈兴亚
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2023-04-07
Anticipated expiration: 2040-07-31
Also published as: WO2022022103A1; CN114070501A

Abstract

The embodiment of the application provides a method and equipment for sending an aperiodic sounding reference signal, wherein when DCI (Downlink control information) received by user equipment is used for scheduling at least two PDSCHs, a first time slot is determined according to a time slot where the last PDSCH of the at least two PDSCHs is located; and determining a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot, and then transmitting the aperiodic SRS in the target time slot. In the embodiment of the application, when the DCI is used for scheduling the at least two PDSCHs, a collision between the time when the UE transmits the aperiodic SRS and the time when the UE receives the PDSCH can be effectively avoided, so that the UE can normally transmit the aperiodic SRS.

Description

Method and equipment for sending aperiodic sounding reference signal

Technical Field

The embodiment of the present application relates to the field of mobile communication technologies, and in particular, to a method and an apparatus for sending a non-periodic Sounding Reference Signal (SRS).

Background

In uplink transmission, user Equipment (UE) needs to send an SRS to network Equipment, so that the network Equipment monitors uplink channel state information, thereby implementing functions such as frequency selective scheduling and link adaptation.

In a New Radio (NR) system, a network device may send Downlink Control Information (DCI) to trigger a UE to send an aperiodic SRS.

However, when one DCI schedules a plurality of Physical Downlink Shared Channels (PDSCHs), the time when the UE transmits the aperiodic SRS may collide with the time when the UE receives the PDSCHs, thereby causing the failure of the UE to transmit the aperiodic SRS.

Disclosure of Invention

The embodiment of the application provides a sounding reference signal transmission method and device, which can solve the technical problem that when one DCI schedules a plurality of PDSCHs, the time for UE to send an aperiodic SRS may conflict with the time for UE to receive the PDSCH, so that the UE cannot send the aperiodic SRS.

In a first aspect, an embodiment of the present application provides a method for sending an aperiodic sounding reference signal, including:

the method comprises the steps that user equipment receives DCI, wherein the DCI is used for scheduling at least two PDSCHs and triggering the user equipment to send an aperiodic SRS.

And determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs.

And determining a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot.

And transmitting the aperiodic SRS in the target time slot.

In a possible design, the determining, according to the serving cell scheduled by the DCI and the serving cell where the user equipment transmits the aperiodic SRS, a target slot for transmitting the aperiodic SRS based on the first slot and whether the serving cell is the same serving cell as the serving cell where the user equipment transmits the aperiodic SRS includes:

and when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining the target time slot according to the position of the first time slot, the number of intervals of the first time slot and the number of intervals of the second time slot.

And when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining the target time slot according to the position of the first time slot and the interval number of the first time slot.

The first number of time slot intervals is configured by a network device, the second number of time slot intervals is determined according to a parameter configured by the network device, and the parameter configured by the network device includes a first parameter group of a carrier where a Physical Downlink Control Channel (PDCCH) is received and a second parameter group of a carrier where the aperiodic SRS is transmitted; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of slots.

In a possible design, the determining, according to the first slot and whether the serving cell scheduled by the DCI and the serving cell from which the user equipment transmits the aperiodic SRS are the same serving cell, a target slot to transmit the aperiodic SRS includes:

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining a first target time slot according to the position of the first time slot, the number of intervals of the first time slot and the number of intervals of the second time slot, and determining a first available time slot after the first target time slot as the target time slot.

When the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining a second target time slot according to the position of the first time slot and the interval number of the first time slot, and determining a first available time slot after the second target time slot as the target time slot.

The number of the first time slot intervals is greater than or equal to the number of time slots occupied by preparation time required by the user equipment before the non-periodic SRS is sent, the number of the second time slot intervals is determined according to parameters configured by network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier where the PDCCH is received and a second parameter group of the carrier where the non-periodic SRS is sent; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of slots.

In a possible design, the determining a first time slot according to a time slot in which a last PDSCH of the at least two PDSCHs is located includes:

and determining the first time slot according to the time slot of the last PDSCH in the at least two PDSCHs, the subcarrier interval of the uplink carrier where the user equipment is located during uplink transmission and the subcarrier interval of the downlink carrier where the user equipment is located during downlink reception.

determining the first time slot according to the position of the Nth time slot after the time slot of the last PDSCH in the at least two PDSCHs, the subcarrier interval of the uplink carrier where the user equipment is located during uplink transmission and the subcarrier interval of the downlink carrier where the user equipment is located during downlink reception; n is a natural number which is less than or equal to the number of the first time slot intervals.

determining the first time slot according to the position of the Nth time slot before the time slot of the last PDSCH in the at least two PDSCHs, the subcarrier interval of the uplink carrier where the user equipment is located during uplink transmission and the subcarrier interval of the downlink carrier where the user equipment is located during downlink reception; n is a natural number and is less than or equal to the number of PDSCHs scheduled by the DCI.

In one possible embodiment, the method further comprises:

and determining a second time slot according to the position of the time slot of the DCI, the subcarrier spacing of the uplink carrier where the user equipment is located during uplink transmission and the subcarrier spacing of the downlink carrier where the user equipment is located during downlink reception.

And when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining the target time slot according to the position of the second time slot, the number of the first time slot intervals, the number of the second time slot intervals and the position of the time slot in which the last PDSCH of the at least two PDSCHs is located.

And when the serving cell scheduled by the DCI and the serving cell of the user equipment for sending the aperiodic SRS are the same serving cell, determining the target time slot according to the position of the second time slot, the number of the first time slot intervals and the position of the time slot of the last PDSCH in the at least two PDSCHs.

The first time slot interval number is configured by network equipment, the second time slot interval number is determined according to parameters configured by the network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier where a PDCCH is received and a second parameter group of the carrier where the aperiodic SRS is sent; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of slots.

In one possible embodiment, the method further includes:

When the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining a first target time slot according to the position of the second time slot, the number of first time slot intervals, the number of second time slot intervals and the position of the time slot in which the last PDSCH of the at least two PDSCHs is located, and determining a first available time slot after the first target time slot as the target time slot.

When the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining a second target time slot according to the position of the second time slot, the number of intervals of the first time slot and the position of the time slot in which the last PDSCH of the at least two PDSCHs is located, and determining a first available time slot after the second target time slot as the target time slot.

The number of the first time slot intervals is greater than or equal to the number of time slots occupied by preparation time required by the user equipment before the aperiodic SRS is sent, the number of the second time slot intervals is determined according to parameters configured by network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier where the PDCCH is received and a second parameter group of the carrier where the aperiodic SRS is sent; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of slots.

The first time slot interval number is configured by the network equipment, the second time slot interval number is determined according to parameters configured by the network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier where the PDCCH is located when the PDCCH is received and a second parameter group of the carrier where the aperiodic SRS is located when the PDCCH is sent; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of slots.

The transmitting the aperiodic SRS in the target slot includes:

and when the target time slot is overlapped with the time slot where any one PDSCH of the at least two PDSCHs is located, transmitting the aperiodic SRS in the target time slot.

In a second aspect, an embodiment of the present application provides an apparatus for transmitting an aperiodic sounding reference signal, where the apparatus includes:

a receiving module, configured to receive downlink control information DCI, where the DCI is used to schedule at least two physical downlink shared channels PDSCH and to trigger the ue to send an aperiodic sounding reference signal SRS.

And the processing module is used for determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs.

The processing module is further configured to determine a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell in which the user equipment transmits the aperiodic SRS are the same serving cell and the first time slot.

A sending module, configured to send the aperiodic SRS in the target timeslot.

In a third aspect, an embodiment of the present application provides a user equipment, including: at least one processor and memory; the memory stores computer-executable instructions; the at least one processor executes computer-executable instructions stored by the memory to cause the at least one processor to perform the method of transmitting an aperiodic sounding reference signal as provided in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer executable instruction is stored, and when a processor executes the computer executable instruction, the method for transmitting an aperiodic sounding reference signal is implemented as provided in the first aspect.

According to the method and the device for sending the aperiodic sounding reference signal, when DCI received by user equipment is used for scheduling at least two PDSCHs, a first time slot is determined according to a time slot where the last PDSCH of the at least two PDSCHs is located; and determining a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot, and then transmitting the aperiodic SRS in the target time slot. In the embodiment of the application, when the DCI is used for scheduling the at least two PDSCHs, the target time slot for transmitting the aperiodic SRS is determined by combining the serving cell scheduled by the DCI, the serving cell in which the user equipment transmits the aperiodic SRS, and the time slot in which the last PDSCH in the at least two PDSCHs is located, so that a collision between the time when the UE transmits the aperiodic SRS and the time when the UE receives the PDSCH can be effectively avoided, and the UE can be ensured to normally transmit the aperiodic SRS.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive exercise.

Fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a first flowchart illustrating a method for transmitting an aperiodic sounding reference signal according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a second method for sending an aperiodic sounding reference signal according to an embodiment of the present application;

fig. 4 is a first schematic diagram of timeslot allocation according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a timeslot allocation according to an embodiment of the present application;

fig. 6 is a schematic diagram of timeslot allocation according to a third embodiment of the present application;

fig. 7 is a third flowchart illustrating a method for transmitting an aperiodic sounding reference signal according to an embodiment of the present application;

fig. 8 is a schematic diagram illustrating program modules of an apparatus for transmitting an aperiodic sounding reference signal according to an embodiment of the present application;

fig. 9 is a schematic hardware structure diagram of a user equipment provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application can be applied to various communication systems, such as: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (LTE-a) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum, a Universal Mobile telecommunications System (GSM) System, a UMTS (Universal Mobile telecommunications System), a Wireless Local Area Network (WLAN) System, and other Wireless communication systems.

Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-Machine (M2M) Communication, machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.

Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a wireless communication system according to an embodiment of the present disclosure. The wireless communication system provided by the embodiment including UE101 and network device 102.

Alternatively, the UE101 may refer to various forms of user equipment, access terminal, subscriber unit, subscriber station, mobile Station (MS), remote station, remote terminal, mobile device, terminal device (terminal equipment), wireless communication device, user agent, or user device. The present invention may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which is not limited in this embodiment of the present invention as long as the UE101 can wirelessly communicate with the Network device 102.

In the embodiment of the application, a unidirectional communication link from an access network to UE is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the UE to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

Optionally, the Network device 102, that is, a public mobile communication Network device, is an interface device for the UE101 to Access the internet, and is also a form of a Radio Station, and refers to a Radio transceiver Station for performing information transmission with the UE101 in a certain Radio coverage area, and includes a Base Station (BS), which may also be referred to as a Base Station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a Base Station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a Base Station function in a 3G network includes a node B (NodeB), a device providing a Base Station function in a 4G network includes an Evolved node B (eNB), and in a Wireless Local Area Network (WLAN), the device providing a Base Station function is an Access Point (AP), a device providing a Base Station function in a 5G NR, a gNB (ng-eNB) that continues to evolve, where the gNB and the UE communicate with each other by using an NR technology, and the ng-eNB and the UE communicate with each other by using an Evolved Universal Terrestrial Radio Access network (E-eNB) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The network device 102 in the embodiment of the present application also includes a device that provides a base station function in a future new communication system, and the like.

The network device 102 may send Downlink scheduling Information (DL Grant) to the UE101 through Downlink Control Information (DCI) to indicate PDSCH transmission, so that the UE101 receives data. Wherein, the same DCI may include scheduling information of at least two PDSCHs. In addition, the DCI may also trigger the UE101 to transmit an aperiodic SRS.

In the existing communication system, the detection of the uplink channel is completed by a sounding signal. The base station can obtain uplink channel information by the user equipment sending sounding signals at one or more symbols of the SRS subframe, thereby carrying out resource scheduling and measurement of uplink transmission. The SRS in the LTE/NR system may be transmitted periodically, that is, the terminal device may continuously transmit a sounding signal at a certain period until entering a state without data transmission. The parameters of the periodic SRS are configured by a higher layer, and include CS (cyclic Shift), bandwidth, frequency hopping parameters, period, and transmission subframe position of the SRS.

Due to the long scheduling period and the low scheduling efficiency, the periodic SRS usually occupies more physical resources. In order to improve the utilization rate of SRS resources and reduce the overhead of the SRS resources, aperiodic SRS transmission is introduced into an LTE-A/NR system. Unlike the periodic SRS, the aperiodic SRS is dynamically activated by the base station, and once activated, the ue only transmits a one-time sounding signal, but does not periodically transmit a signal. Through the aperiodic sounding signal, the base station can more flexibly obtain the required channel information, and the transmission of the periodic SRS is closed or reduced when the condition allows, so that the physical resource overhead of the SRS is reduced.

Currently, when one DCI is used to schedule multiple PDSCHs, the time when the UE transmits the aperiodic SRS may collide with the time when the UE receives the PDSCHs, thereby causing the failure of the UE to transmit the aperiodic SRS.

In order to solve the above technical problem, an embodiment of the present application provides a method for sending an aperiodic sounding reference signal, where when DCI is used to schedule at least two PDSCHs, a target timeslot for sending an aperiodic SRS is determined by combining a serving cell scheduled by the DCI, a serving cell where a user equipment sends the aperiodic SRS, and a timeslot where a last PDSCH in the at least two PDSCHs is located, so that a conflict between a time when a UE sends the aperiodic SRS and a time when the UE receives the PDSCH can be effectively avoided. Please refer to the following embodiments of the present application:

referring to fig. 2, fig. 2 is a flowchart illustrating a first method for sending an aperiodic sounding reference signal according to an embodiment of the present application, where an execution subject of the embodiment is a UE in the embodiment shown in fig. 1. As shown in fig. 2, the method includes:

s201, the user equipment receives DCI, and the DCI is used for scheduling at least two PDSCHs and triggering the user equipment to send an aperiodic SRS.

In the embodiment of the application, after receiving DCI sent by a network device, a user equipment analyzes downlink scheduling information contained in the DCI, determines a PDSCH scheduled by the DCI, and continues to execute the following steps S202 to S204 when the DCI includes scheduling information of two or more PDSCHs; when the DCI includes only scheduling information of one PDSCH, the user equipment may transmit the aperiodic SRS according to a time slot indicated by the network equipment.

S202, determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs.

It is understood that the PDSCH is a kind of physical downlink channel in the wireless communication system, and is used for transmitting downlink user data. When downlink data transmission is performed on the PDSCH, the base station is required to assign time domain resources and frequency domain resources to the downlink data to perform data transmission on the PDSCH. In this embodiment of the present application, the position of each PDSCH on the time domain may be determined according to the starting symbol and the symbol length of each PDSCH on the time domain in the at least two PDSCHs, and then the position of the last PDSCH and the time slot of the last PDSCH are determined from the at least two PDSCHs.

After the time slot of the last PDSCH in the at least two PDSCHs is determined, a first time slot may be determined according to the time slot, where the first time slot may be an nth time slot before or after the time slot of the last PDSCH in the at least two PDSCHs, and N is a natural number greater than 0.

S203, determining a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot.

In the embodiment of the application, after the first time slot is determined, whether a serving cell scheduled by DCI and a serving cell where the user equipment transmits the aperiodic SRS are the same serving cell is detected, and then a target time slot for transmitting the aperiodic SRS is determined according to the detection result and the first time slot.

For example, the target timeslot may be an m-th timeslot (m is a natural number greater than 0) after a timeslot where a last PDSCH of the at least two PDSCHs is located.

Alternatively, the target time slot may be a first available time slot after a time slot in which a last PDSCH of the at least two PDSCHs is located.

And S204, transmitting the aperiodic SRS in the target time slot.

According to the sending method of the aperiodic sounding reference signal provided by the embodiment of the application, when the DCI is used for scheduling at least two PDSCHs, the target time slot for sending the aperiodic SRS is determined by combining the serving cell scheduled by the DCI, the serving cell for sending the aperiodic SRS by the user equipment and the time slot where the last PDSCH of the at least two PDSCHs is located, so that the conflict between the time when the UE sends the aperiodic SRS and the time when the UE receives the PDSCH can be effectively avoided, and the UE can be ensured to normally send the aperiodic SRS.

Based on the content described in the foregoing embodiment, in a feasible implementation manner of the present application, referring to fig. 3, fig. 3 is a second flowchart of a method for sending an aperiodic sounding reference signal provided in the embodiment of the present application, where the method for sending an aperiodic sounding reference signal includes:

s301, the user equipment receives DCI, and the DCI is used for scheduling at least two PDSCHs and triggering the user equipment to transmit an aperiodic SRS.

S302, determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs.

S303, detecting whether the serving cell scheduled by the DCI is the same as the serving cell of the user equipment for transmitting the non-periodic SRS. If not, go to step S304; if yes, go to step S305.

S304, determining the target time slot according to the position of the first time slot, the number of the first time slot intervals and the number of the second time slot intervals. The process continues to step S306.

S305, determining a target time slot according to the position of the first time slot and the number of the intervals of the first time slot. The process continues to step S306.

The first time slot interval number is configured by network equipment, the second time slot interval number is determined according to parameters configured by the network equipment, and the parameters comprise a first parameter group of a carrier where a PDCCH is received and a second parameter group of the carrier where an aperiodic SRS is sent; the first parameter set and the second parameter set respectively comprise at least one of the following parameters: subcarrier spacing, number of slots.

S306, the aperiodic SRS is sent in the target time slot.

For example, in this embodiment of the present application, when the serving cell scheduled by the DCI and the serving cell from which the user equipment transmits the aperiodic SRS are not the same serving cell, the target timeslot Ks may be determined by:

when the serving cell scheduled by the DCI and the serving cell from which the user equipment transmits the aperiodic SRS are the same serving cell, the target timeslot Ks may be determined in the following manner:

wherein the content of the first and second substances,

the first time slot may be used to indicate the first time slot, where μ SRS indicates a subcarrier interval of an uplink carrier where the aperiodic SRS is transmitted by the user equipment in an uplink direction, and μ PDCCH indicates a subcarrier interval of a downlink carrier where the PDCCH is received by the user equipment in a downlink direction. k represents the number of the first slot intervals, and is configured by the network device through Radio Resource Control (RRC) signaling. />

And the number of the second time slot intervals is represented by a first parameter group of a carrier where the user equipment receives the PDCCH and a second parameter group of the carrier where the non-periodic SRS is transmitted.

Illustratively, the first parameter set of the carrier on which the PDCCH is received includes μ _offset,PDCCH (indicating the subcarrier spacing of the carrier on which the PDCCH is received),

(indicating the number of slots of a carrier on which a PDCCH is received or a time domain parameter of the carrier on which the PDCCH is received); the second parameter set for the carrier on which the aperiodic SRS is transmitted comprises ≥>

(indicating the subcarrier spacing of the carrier on which the aperiodic SRS is transmitted), "based on the measured time interval, and>

(indicating the number of slots of the carrier on which the aperiodic SRS is transmitted or the time domain parameter of the carrier on which the aperiodic SRS is transmitted).

In a possible embodiment, n represents a position of a time slot in which a last PDSCH of the at least two PDSCHs is located.

Exemplarily, referring to fig. 4, fig. 4 is a schematic diagram of a timeslot allocation provided in an embodiment of the present application. In fig. 4, it is assumed that the current radio frame includes 20 slots (solt), which are

slots

0, 1, 2, 3, … …; the DCI is used for scheduling three PDSCHs, and time slots of the three PDSCHs are respectively

time slots

0, 1 and 2; assuming that the subcarrier spacing of the uplink carrier where the ue is located during uplink transmission is the same as the subcarrier spacing of the downlink carrier where the ue is located during downlink reception, and k =2, it may be determined that the target slot for transmitting the aperiodic SRS is slot 5.

In a second possible implementation manner, N represents a position of an nth time slot after a time slot in which a last PDSCH of the at least two PDSCHs is located, and N is a natural number less than or equal to the number of intervals of the first time slot.

Exemplarily, referring to fig. 5, fig. 5 is a schematic diagram of a timeslot allocation provided in an embodiment of the present application. In fig. 5, it is assumed that the current radio frame includes 20 slots (solt), which are

slots

0, 1, 2, 3, … …; the DCI is used for scheduling three PDSCHs, and the time slots of the three PDSCHs are respectively

time slots

0, 1 and 2; assuming that the subcarrier spacing of the uplink carrier where the ue is located during uplink transmission is the same as the subcarrier spacing of the downlink carrier where the ue is located during downlink reception, and N =1,k =2, it can be determined that the target timeslot for transmitting the aperiodic SRS is timeslot 6.

In a possible embodiment, N represents a position of an nth time slot before a time slot in which a last PDSCH is located in the at least two PDSCHs, where N is a natural number and is less than or equal to the number of PDSCHs scheduled by the DCI.

Exemplarily, referring to fig. 6, fig. 6 is a schematic diagram of a timeslot allocation diagram three provided in the embodiment of the present application. In fig. 6, it is assumed that the current radio frame includes 20 slots (solt), which are

slots

time slots

0, 1 and 2; assuming that the subcarrier spacing of the uplink carrier where the ue is located during uplink transmission is the same as the subcarrier spacing of the downlink carrier where the ue is located during downlink reception, and N =1,k =2, it can be determined that the target timeslot for transmitting the aperiodic SRS is timeslot 4.

In a possible embodiment, n represents a position of a time slot in which the DCI is located, and k is associated with a position of a time slot in which a last PDSCH of the at least two PDSCHs is located, that is, k = j + k, where j is the number of PDSCHs scheduled by the DCI.

According to the sending method of the aperiodic sounding reference signal provided by the embodiment of the application, when the DCI is used for scheduling at least two PDSCHs, the serving cell scheduled by the DCI and the serving cell for sending the aperiodic SRS by the user equipment are combined, and the aperiodic SRS is sent by using the m-th (m is a natural number greater than 0) time slot after the time slot where the last PDSCH of the at least two PDSCHs is located, so that a conflict between the time when the UE sends the aperiodic SRS and the time when the UE receives the PDSCH can be effectively avoided, and the UE can be ensured to normally send the aperiodic SRS.

Based on the content described in the foregoing embodiment, in a feasible implementation manner of the present application, referring to fig. 7, fig. 7 is a flowchart illustrating a third flowchart of a method for sending an aperiodic sounding reference signal provided in the embodiment of the present application, where the method for sending an aperiodic sounding reference signal includes:

s701, the user equipment receives DCI, and the DCI is used for scheduling at least two PDSCHs and triggering the user equipment to send an aperiodic SRS.

S702, determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs.

S703, detecting whether the serving cell scheduled by the DCI is the same as the serving cell transmitted by the user equipment for the aperiodic SRS. If not, go to step S704; if yes, go to step S705.

S704, determining a first target time slot according to the position of the first time slot, the number of the first time slot intervals and the number of the second time slot intervals, and determining a first available time slot after the first target time slot as a target time slot. The process continues to step S706.

S705, according to the position of the first time slot and the number of the first time slot intervals, determining a second target time slot, and determining a first available time slot after the second target time slot as a target time slot. The process continues to step S706.

Optionally, an interval between a time slot in which a last PDSCH of the at least two PDSCHs is located and a first available time slot after the first target time slot or the second target time slot satisfies a processing capability of the user equipment.

The number of the first time slot intervals is larger than or equal to the number of time slots occupied by preparation time required by user equipment before sending the non-periodic SRS, and the number of the second time slot intervals is based on

And (4) determining.

S706, the aperiodic SRS is sent in the target time slot.

Specifically, in this embodiment of the present application, when the serving cell scheduled by the DCI and the serving cell from which the user equipment transmits the aperiodic SRS are not the same serving cell, the target timeslot may be a first available timeslot after the first target timeslot Ks. Wherein the first target slot Ks may be determined by:

when the serving cell scheduled by the DCI and the serving cell from which the user equipment transmits the aperiodic SRS are the same serving cell, the target timeslot may be a first available timeslot after a second target timeslot Ks ', where the second target timeslot Ks' may be determined by:

wherein the content of the first and second substances,

the number k may be used to indicate the first time slot, and is determined according to a switching time required for uplink and downlink transmission on the user equipment side and/or a preparation time for sending an SRS by the user equipment.

The number of the second time slot intervals is shown, and is determined according to parameters configured by the network device, which may specifically refer to the foregoing embodiments.

According to the sending method of the aperiodic sounding reference signal provided by the embodiment of the application, when the DCI is used for scheduling at least two PDSCHs, the serving cell scheduled by the DCI and the serving cell for sending the aperiodic SRS by the user equipment are combined, and the first available time slot after the time slot where the last PDSCH of the at least two PDSCHs is located is used for sending the aperiodic SRS, so that the conflict between the time when the UE sends the aperiodic SRS and the time when the UE receives the PDSCH can be effectively avoided, and the UE can be ensured to normally send the aperiodic SRS.

Based on the content described in the foregoing embodiment, in a possible implementation manner of the present application, the method for transmitting an aperiodic sounding reference signal includes:

when the serving cell scheduled by the DCI and the serving cell from which the user equipment transmits the aperiodic SRS are not the same serving cell, the target timeslot may be the first available timeslot after the first target timeslot Ks.

Wherein the first target slot Ks may be determined by:

wherein k represents the number of the first slot intervals, and is configured by the network device through RRC signaling. n represents the position of the time slot where the last PDSCH of the at least two PDSCHs is located.

When the target time slot is overlapped with the time slot where any one PDSCH of the at least two PDSCHs is located, sending an aperiodic SRS in the target time slot, and not receiving the PDSCH; therefore, the problem that the UE cannot transmit the aperiodic SRS when the time of transmitting the aperiodic SRS by the UE and the time of receiving the PDSCH by the UE conflict can be avoided.

Or when the target time slot is overlapped with the time slot where any one PDSCH of the at least two PDSCHs is located, the PDSCH is received in the target time slot, and the aperiodic SRS is not transmitted, so that the problem that the UE cannot receive the PDSCH when the time when the UE transmits the aperiodic SRS conflicts with the time when the UE receives the PDSCH can be avoided.

Further, based on the content described in the foregoing embodiments, an apparatus for transmitting an aperiodic sounding reference signal is further provided in the embodiments of the present application, and referring to fig. 8, fig. 8 is a schematic diagram of program modules of an apparatus for transmitting an aperiodic sounding reference signal provided in the embodiments of the present application.

In this embodiment, the device 80 for sending the aperiodic sounding reference signal includes:

a receiving module 801, configured to receive downlink control information DCI, where the DCI is used to schedule at least two PDSCHs and to trigger a user equipment to send an aperiodic SRS.

A processing module 802, configured to determine a first time slot according to a time slot where a last PDSCH of the at least two PDSCHs is located; and determining a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot.

A sending module 803, configured to send the aperiodic SRS in the target slot.

The apparatus 80 for transmitting an aperiodic sounding reference signal provided in this embodiment of the application, when DCI is used to schedule at least two PDSCHs, determines a target time slot for transmitting an aperiodic SRS by combining a serving cell scheduled by the DCI, a serving cell for transmitting the aperiodic SRS by a user equipment, and a time slot in which a last PDSCH of the at least two PDSCHs is located, so as to effectively avoid a collision between a time when a UE transmits the aperiodic SRS and a time when the UE receives the PDSCH, thereby ensuring that the UE can normally transmit the aperiodic SRS.

Optionally, the processing module 802 is specifically configured to:

and when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the non-periodic SRS are not the same serving cell, determining a target time slot according to the position of the first time slot, the number of the first time slot intervals and the number of the second time slot intervals. When the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the non-periodic SRS are the same serving cell, determining a target time slot according to the position of the first time slot and the number of intervals of the first time slot;

the first time slot interval number is configured by the network equipment, the second time slot interval number is determined according to parameters configured by the network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier where the PDCCH is located when the PDCCH is received and a second parameter group of the carrier where the aperiodic SRS is located when the PDCCH is sent; the first parameter set and the second parameter set respectively comprise at least one of the following parameters: subcarrier spacing, number of slots.

Optionally, the processing module 802 is specifically configured to:

when the serving cell scheduled by the DCI and the serving cell of the user equipment for sending the non-periodic SRS are not the same serving cell, determining a first target time slot according to the position of the first time slot, the number of the first time slot intervals and the number of the second time slot intervals, and determining a first available time slot after the first target time slot as a target time slot; when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the non-periodic SRS are the same serving cell, determining a second target time slot according to the position of the first time slot and the number of the first time slot intervals, and determining a first available time slot after the second target time slot as the target time slot.

The number of the first time slot intervals is larger than or equal to the number of time slots occupied by preparation time required by the user equipment before the non-periodic SRS is sent, and the number of the second time slot intervals is determined according to parameters configured by the network equipment.

In a possible embodiment, the processing module 802 is further specifically configured to:

and determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs, the subcarrier interval of the uplink carrier where the user equipment is located during uplink transmission and the subcarrier interval of the downlink carrier where the user equipment is located during downlink reception.

determining a first time slot according to the position of an Nth time slot after the time slot of the last PDSCH in the at least two PDSCHs, the subcarrier interval of an uplink carrier where the user equipment is located during uplink transmission and the subcarrier interval of a downlink carrier where the user equipment is located during downlink reception; n is a natural number less than or equal to the number of the first time slot intervals.

In a third possible embodiment, the processing module 802 is further specifically configured to:

determining a first time slot according to the position of the Nth time slot before the time slot of the last PDSCH in the at least two PDSCHs, and the subcarrier interval of an uplink carrier in which the user equipment is positioned during uplink transmission and the subcarrier interval of a downlink carrier in which the user equipment is positioned during downlink reception; n is a natural number, and N is less than or equal to the number of PDSCHs scheduled by the DCI.

In a possible implementation, the processing module 802 is further configured to:

determining a second time slot according to the position of the time slot of the DCI, the subcarrier spacing of the uplink carrier where the user equipment is located during uplink transmission and the subcarrier spacing of the downlink carrier where the user equipment is located during downlink reception;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for sending the non-periodic SRS are not the same serving cell, determining a target time slot according to the position of a second time slot, the number of intervals of the first time slot, the number of intervals of the second time slot and the position of the time slot of the last PDSCH in the at least two PDSCHs;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining a target time slot according to the position of a second time slot, the number of intervals of the first time slot and the position of the time slot of the last PDSCH in the at least two PDSCHs;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for sending the non-periodic SRS are not the same serving cell, determining a first target time slot according to the position of a second time slot, the number of first time slot intervals, the number of second time slot intervals and the position of the time slot in which the last PDSCH of the at least two PDSCHs is located, and determining a first available time slot after the first target time slot as the target time slot;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for sending the aperiodic SRS are the same serving cell, determining a second target time slot according to the position of the second time slot, the number of the first time slot intervals and the position of the time slot of the last PDSCH in the at least two PDSCHs, and determining a first available time slot after the second target time slot as a target time slot;

the number of the first time slot intervals is larger than or equal to the number of time slots occupied by preparation time required by user equipment before the non-periodic SRS is sent, and the number of the second time slot intervals is determined according to parameters configured by network equipment.

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining a first target time slot according to the position of the first time slot, the number of the first time slot intervals and the number of the second time slot intervals, and determining a first available time slot after the first target time slot as a target time slot;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for sending the non-periodic SRS are the same serving cell, determining a second target time slot according to the position of the first time slot and the number of intervals of the first time slot, and determining a first available time slot after the second target time slot as the target time slot;

the first time slot interval number is configured for the network equipment, and the second time slot interval number is determined according to parameters configured for the network equipment.

The sending module 803 is further configured to:

and when the target time slot is overlapped with the time slot where any one PDSCH of the at least two PDSCHs is positioned, transmitting the aperiodic SRS in the target time slot.

It can be understood that, each module in the aforementioned aperiodic sounding reference signal sending apparatus 80 is implemented in the same principle and manner as each step in the aperiodic sounding reference signal sending method described in the foregoing embodiment, so that reference may be made to the description of each embodiment in the aperiodic sounding reference signal sending method, and details are not repeated here.

Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a user equipment, where the user equipment includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes computer-executable instructions stored in the memory to implement the aspects described in the embodiments of the method for transmitting an aperiodic sounding reference signal as described above.

For better understanding of the embodiment of the present application, referring to fig. 9, fig. 9 is a schematic diagram of a hardware structure of a user equipment provided in the embodiment of the present application.

As shown in fig. 9, the user equipment 90 of the present embodiment includes: a processor 901 and a memory 902; wherein

A memory 902 for storing computer-executable instructions;

the processor 901 is configured to execute the computer execution instructions stored in the memory to implement the steps performed by the user equipment in the foregoing embodiments, which may be specifically referred to in the foregoing description of the method embodiments.

Alternatively, the memory 902 may be separate or integrated with the processor 901.

When the memory 902 is provided separately, the device further comprises a bus 903 for connecting said memory 902 and the processor 901.

Further, based on the content described in the foregoing embodiments, the present application also provides a computer-readable storage medium, where computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the steps performed by the user equipment in the foregoing embodiments are implemented.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the methods disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The memory may comprise a high speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one magnetic disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, or the like.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for transmitting an aperiodic sounding reference signal, the method comprising:

the method comprises the steps that user equipment receives Downlink Control Information (DCI), wherein the DCI is used for scheduling at least two Physical Downlink Shared Channels (PDSCHs) and triggering the user equipment to send an aperiodic Sounding Reference Signal (SRS);

determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs;

determining a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot;

transmitting the aperiodic SRS in the target time slot;

determining, according to the first time slot and whether the serving cell scheduled by the DCI and the serving cell where the user equipment transmits the aperiodic SRS are the same serving cell, a target time slot for transmitting the aperiodic SRS, including:

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining the target time slot according to the position of the first time slot, the number of intervals of the first time slot and the number of intervals of the second time slot;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining the target time slot according to the position of the first time slot and the interval number of the first time slot;

the first time slot interval number is configured by network equipment, the second time slot interval number is determined according to parameters configured by the network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier when a Physical Downlink Control Channel (PDCCH) is received and a second parameter group of the carrier when the aperiodic SRS is sent; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of slots.

2. The method of claim 1, wherein the determining, according to the serving cell scheduled by the DCI and a serving cell from which the user equipment transmits the aperiodic SRS, a target slot for transmitting the aperiodic SRS according to the first slot and whether the serving cell is the same serving cell as the first slot comprises:

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining a first target time slot according to the position of the first time slot, the number of intervals of the first time slot and the number of intervals of a second time slot, and determining a first available time slot after the first target time slot as the target time slot;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining a second target time slot according to the position of the first time slot and the interval number of the first time slot, and determining a first available time slot after the second target time slot as the target time slot;

3. The method according to claim 1 or 2, wherein the determining the first time slot according to the time slot in which the last PDSCH of the at least two PDSCHs is located comprises:

4. The method according to claim 1 or 2, wherein the determining the first time slot according to the time slot in which the last PDSCH of the at least two PDSCHs is located comprises:

5. The method according to claim 1 or 2, wherein the determining the first time slot according to the time slot in which the last PDSCH of the at least two PDSCHs is located comprises:

6. The method of claim 1, further comprising:

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining the target time slot according to the position of the second time slot, the number of first time slot intervals, the number of second time slot intervals and the position of the time slot in which the last PDSCH in the at least two PDSCHs is located;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining the target time slot according to the position of the second time slot, the number of intervals of the first time slot and the position of the time slot in which the last PDSCH in the at least two PDSCHs is located;

7. The method of claim 1, further comprising:

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are not the same serving cell, determining a first target time slot according to the position of the second time slot, the number of first time slot intervals, the number of second time slot intervals and the position of the time slot in which the last PDSCH in the at least two PDSCHs is located, and determining a first available time slot after the first target time slot as the target time slot;

when the serving cell scheduled by the DCI and the serving cell of the user equipment for transmitting the aperiodic SRS are the same serving cell, determining a second target time slot according to the position of the second time slot, the number of intervals of the first time slot and the position of the time slot in which the last PDSCH in the at least two PDSCHs is located, and determining a first available time slot after the second target time slot as the target time slot;

8. The method of claim 1, wherein the determining, according to the serving cell scheduled by the DCI and a serving cell from which the user equipment transmits the aperiodic SRS, a target slot for transmitting the aperiodic SRS according to the first slot and whether the serving cell is the same serving cell as the first slot comprises:

the first time slot interval number is configured by the network equipment, the second time slot interval number is determined according to parameters configured by the network equipment, and the parameters configured by the network equipment comprise a first parameter group of a carrier where the PDCCH is located when the PDCCH is received and a second parameter group of the carrier where the aperiodic SRS is located when the PDCCH is sent; the first parameter set and the second parameter set respectively include at least one of the following parameters: subcarrier spacing, number of time slots;

the transmitting the aperiodic SRS in the target slot includes:

9. An apparatus for transmitting an aperiodic sounding reference signal, the apparatus comprising:

a receiving module, configured to receive downlink control information DCI, where the DCI is used to schedule at least two physical downlink shared channels PDSCH and trigger the ue to send an aperiodic sounding reference signal SRS;

the processing module is used for determining a first time slot according to the time slot of the last PDSCH in the at least two PDSCHs;

the processing module is further configured to determine a target time slot for transmitting the aperiodic SRS according to whether the serving cell scheduled by the DCI and the serving cell for transmitting the aperiodic SRS by the user equipment are the same serving cell and the first time slot;

a sending module, configured to send the aperiodic SRS in the target timeslot;

the processing module is specifically configured to:

10. A user device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of transmitting aperiodic sounding reference signal as recited in any of claims 1 to 8.

11. A computer-readable storage medium having computer-executable instructions stored therein, which when executed by a processor, implement the method according to any one of claims 1 to 8 for transmitting the aperiodic sounding reference signal.