Method for transmitting sounding reference signal in frequency division duplex system and terminal

Abstract

The present invention provides a sounding reference signal transmission method and terminal for a frequency division duplex system. The terminal includes a signal transceiver antenna, a signal transmitting module, a signal receiving module, a duplexer, and a signal processing module, wherein the duplexer includes an uplink signal terminal connected to the signal transmitting module, a downlink signal terminal connected to the signal receiving module, and a signal common terminal connected to the signal transceiver antenna; when the SRS request information from the base station is received through the signal receiving module, the signal processing module can generate SRS information based on the SRS request information, and send the SRS information to the base station through the signal transmitting module, the duplexer, and the signal transceiver antenna. According to the solution provided by an embodiment of the present invention, when the SRS request information from the base station is received, the SRS information can be generated based on the SRS request information, and the SRS information can be sent to the base station using a transmission link composed of the signal transmitting module, the duplexer, and the signal transceiver antenna, thereby enabling the transmission of SRS information in an FDD system.

Description

Technical Field

[0001] Embodiments of the present invention relate to, but are not limited to, the field of communication technologies, and in particular to a sounding reference signal transmission method, a terminal, and a computer-readable storage medium for a frequency division duplex system. Background Art

[0002] Currently, all base stations support beamforming technology, enabling them to transmit signals in a directional manner to terminals. When a base station needs to transmit signals in a directional manner, it must first detect information such as the terminal's location and transmission channel quality. This allows it to more accurately allocate resources to each terminal. The Sounding Reference Signal (SRS) is one way terminals provide the base station with information such as their location and transmission channel quality.

[0003] However, in related technologies, the SRS technology is mainly applied to a time division duplex (TDD) system, while there is no specific solution for applying the SRS technology to a frequency division duplex (FDD) system. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] Embodiments of the present invention provide a method, a terminal, and a computer-readable storage medium for transmitting a sounding reference signal in a frequency division duplex system, which can implement transmission of a sounding reference signal in a frequency division duplex system.

[0006] In a first aspect, an embodiment of the present invention provides a terminal, including:

[0007] Signal transceiver antenna;

[0008] Signal transmission module;

[0009] signal receiving module;

[0010] A duplexer, comprising an uplink signal terminal, a downlink signal terminal and a signal common terminal, wherein the uplink signal terminal is connected to the signal transmitting module, the downlink signal terminal is connected to the signal receiving module, and the signal common terminal is connected to the signal transmitting and receiving antenna;

[0011] A signal processing module is respectively connected to the signal transmitting module and the signal receiving module. The signal processing module is used to generate SRS information according to the SRS request information when the SRS request information is received from the base station through the signal receiving module, and send the SRS information to the base station through the signal transmitting module, the duplexer and the signal transceiver antenna.

[0012] In a second aspect, an embodiment of the present invention further provides a sounding reference signal transmission method for a frequency division duplex system, which is applied to a terminal supporting an FDD system, wherein the terminal includes a signal transceiver antenna, a duplexer, a signal transmitting module, a signal receiving module, and a signal processing module, wherein the duplexer includes an uplink signal end, a downlink signal end, and a signal common end, the uplink signal end is connected to the signal transmitting module, the downlink signal end is connected to the signal receiving module, the signal common end is connected to the signal transceiver antenna, and the signal processing module is connected to the signal transmitting module and the signal receiving module, respectively;

[0013] The method comprises:

[0014] When receiving SRS request information from a base station through the signal receiving module, generating SRS information according to the SRS request information;

[0015] The SRS information is sent to a base station through the signal transmission module, the duplexer and the signal transceiver antenna.

[0016] In a third aspect, an embodiment of the present invention further provides a terminal, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the sounding reference signal transmission method as described in the second aspect above is implemented.

[0017] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the sounding reference signal transmission method as described in the second aspect above.

[0018] An embodiment of the present invention includes: a terminal including a signal transceiver antenna, a signal transmitting module, a signal receiving module, a duplexer, and a signal processing module, wherein the duplexer includes an uplink signal terminal, a downlink signal terminal, and a signal common terminal, the uplink signal terminal being connected to the signal transmitting module, the downlink signal terminal being connected to the signal receiving module, and the signal common terminal being connected to the signal transceiver antenna; a signal processing module being connected to the signal transmitting module and the signal receiving module, respectively, and the signal processing module being configured to, upon receiving SRS request information from a base station via the signal receiving module, generate SRS information based on the SRS request information, and transmit the SRS information to the base station via the signal transmitting module, the duplexer, and the signal transceiver antenna. According to the solution provided by the embodiment of the present invention, when the signal receiving module receives SRS request information from a base station, SRS information can be generated based on the SRS request information, and the SRS information can be transmitted to the base station via a transmission link formed by the signal transmitting module, the duplexer, and the signal transceiver antenna, thereby enabling transmission of SRS information in an FDD system.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0021] Figure 1 is a schematic diagram of a terminal capable of supporting an FDD system provided by an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of a terminal capable of supporting an FDD system provided by another embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of a terminal capable of supporting an FDD system provided by another embodiment of the present invention;

[0024] Figure 4 is a schematic diagram of a terminal capable of supporting an FDD system provided by another embodiment of the present invention;

[0025] Figure 5 is a schematic diagram of a terminal capable of supporting an FDD system provided by another embodiment of the present invention;

[0026] Figure 6This is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system provided by one embodiment of the present invention;

[0027] Figure 7 is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system provided by another embodiment of the present invention;

[0028] Figure 8 is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system provided by another embodiment of the present invention;

[0029] Figure 9 is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system provided by another embodiment of the present invention;

[0030] Figure 10 is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system provided by another embodiment of the present invention;

[0031] Figure 11 This is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0034] The present invention provides a method for transmitting a sounding reference signal for a frequency division duplex (FDD) system, a terminal, and a computer-readable storage medium. The terminal includes a signal transceiver antenna, a signal transmitting module, a signal receiving module, a duplexer, and a signal processing module. The duplexer includes an uplink signal terminal, a downlink signal terminal, and a signal common terminal. The uplink signal terminal is connected to the signal transmitting module, the downlink signal terminal is connected to the signal receiving module, the signal common terminal is connected to the signal transceiver antenna, and the signal processing module is connected to the signal transmitting module and the signal receiving module, respectively. Therefore, the terminal can support an FDD system. Furthermore, when an SRS request message from a base station is received via the signal receiving module, the signal processing module can generate SRS information based on the SRS request message and transmit the SRS information to the base station via the signal transmitting module, the duplexer, and the signal transceiver antenna. Therefore, for a terminal supporting an FDD system, when an SRS request message from a base station is received via the signal receiving module, SRS information can be generated based on the SRS request message and transmitted to the base station via the transmission link formed by the signal transmitting module, the duplexer, and the signal transceiver antenna. This enables transmission of SRS information in an FDD system.

[0035] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, Figure 1 FIG. 1 is a schematic diagram of a terminal capable of supporting an FDD system provided by an embodiment of the present invention.

[0037] like Figure 1 As shown, the terminal includes: a signal transceiver antenna 100, a signal transmission module 200, a signal receiving module 300, a duplexer 400 and a signal processing module 800, wherein the duplexer 400 includes an uplink signal terminal 410, a downlink signal terminal 420 and a signal common terminal 430, the uplink signal terminal 410 is connected to the signal transmission module 200, the downlink signal terminal 420 is connected to the signal receiving module 300, and the signal common terminal 430 is connected to the signal transceiver antenna 100; the signal processing module 800 is respectively connected to the signal transmission module 200 and the signal receiving module 300.

[0038] In one embodiment, when the terminal position changes or the channel environment changes and the base station detects that the signal quality of the terminal has decreased, the base station will send SRS request information to the terminal. In addition, the base station can also send SRS request information to the terminal at regular intervals. Therefore, when the signal processing module 800 receives the SRS request information from the base station through the signal receiving module 300, the signal processing module 800 can generate corresponding SRS information based on the SRS request information, and send the SRS information to the base station through the signal transmitting module 200, the duplexer 400 and the signal transceiver antenna 100, so that the base station can perform corresponding channel quality estimation based on the SRS information, and thus can adjust the base station's transmitting antenna accordingly, so that the maximum gain direction of the base station's transmitting antenna can be toward the terminal, so as to improve the quality of the terminal receiving the base station signal.

[0039] In one embodiment, the signal transceiver antenna refers to an antenna with a larger operating frequency band that can support uplink signal and downlink signal transmission. The operating frequency of the signal transceiver antenna includes the uplink signal transmission frequency and the downlink signal transmission frequency. Therefore, the terminal can send uplink signals and receive downlink signals through the signal transceiver antenna. Figure 1 In the terminal structure, when the signal transceiver antenna 100 receives SRS request information from a base station, the signal transceiver antenna 100 transmits the SRS request information to the signal processing module 800 through the duplexer 400 and the signal receiving module 300. Therefore, the signal processing module 800 can generate SRS information based on the SRS request information and send the SRS information to the base station through the signal transmitting module 200, the duplexer 400, and the signal transceiver antenna 100. Therefore, for a terminal supporting an FDD system, when the signal receiving module 300 receives SRS request information from a base station, it can generate SRS information based on the SRS request information and send the SRS information to the base station using the transmission link formed by the transmitting module 200, the duplexer 400, and the signal transceiver antenna 100, thereby enabling the transmission of SRS information in the FDD system.

[0040] In one embodiment, the terminal may be a terminal that supports at least one of a 3G network standard, a 4G network standard, a 5G network standard, and subsequent higher network standards, and this embodiment does not specifically limit this. It is worth noting that the structure of the terminal described in this embodiment is intended to more clearly illustrate the technical solution of the embodiment of the present invention and does not constitute a limitation on the technical solution provided by the embodiment of the present invention. Those skilled in the art will appreciate that with the evolution of network standards and the emergence of new application scenarios, the technical solution provided by the embodiment of the present invention is equally applicable to similar technical problems.

[0041] In addition, in one embodiment, referring to Figure 2The terminal also includes a first switching switch 500, the signal transmission module 200 includes a first transmitting end 210 and a second transmitting end 220, the first transmitting end 210 is connected to the uplink signal end 410, and the first switching switch 500 is respectively connected to the second transmitting end 220, the signal receiving module 300, the downlink signal end 420 and the signal processing module 800.

[0042] In one embodiment, after the signal processing module 800 receives SRS request information from the base station and generates SRS information, the signal processing module 800 can control the first switching switch 500 to connect the second transmitting end 220 and the downlink signal end 420, and modulate the SRS information to the downlink signal transmission frequency to obtain a first SRS signal. Then, the signal transmitting module 200 is used to transmit the first SRS signal, so that the first SRS signal can be transmitted to the duplexer 400 through the second transmitting end 220 and the downlink signal end 420, and transmitted to the base station through the duplexer 400 and the signal transceiver antenna 100.

[0043] In one embodiment, by controlling the first switch 500 to interconnect the second transmitting end 220 and the downlink signal end 420, the signal transmitting module 200, the duplexer 400, and the signal transceiver antenna 100 can form a transmission link for transmitting a signal modulated to the downlink signal transmission frequency. Therefore, after the signal processing module 800 modulates the SRS information to the downlink signal transmission frequency to obtain the first SRS signal, the SRS information can be sent to the base station via this transmission link. Because the frequency of the first SRS signal is consistent with the downlink signal transmission frequency, when the base station receives the first SRS signal, it can accurately determine the channel quality of the terminal's downlink channel, thereby more accurately adjusting the base station's transmitting antenna so that the maximum gain direction of the base station's transmitting antenna is more accurately oriented toward the terminal, thereby improving the quality of the terminal's reception of the base station signal.

[0044] It is worth noting that although the first SRS signal and the uplink signal are sent using different transmission links, the transmitting module 200 is used in common. Therefore, in the process of sending the first SRS signal to the base station, the uplink signal sent by the terminal to the base station will be temporarily interrupted. In order to reduce the impact of the sending of the first SRS signal on the sending of the uplink signal, the first SRS signal and the uplink signal can be sent at intervals, or the first SRS signal and the uplink signal can be allocated to different time slots, and different signals are sent according to different time slots. This embodiment does not specifically limit this.

[0045] In addition, in one embodiment, referring to Figure 3The signal transmission module 200 also includes a first transmission chain 230 and a second switching switch 240. The second switching switch 240 is respectively connected to the signal processing module 800, the first transmission chain 230, the first transmitting end 210 and the second transmitting end 220. The first transmission chain 230 is connected to the signal processing module 800.

[0046] In one embodiment, when the signal processing module 800 receives SRS request information from the base station and generates SRS information, and modulates the SRS information to the downlink signal transmission frequency to obtain the first SRS signal, since the frequency of the first SRS signal is different from the frequency of the uplink signal, in order to distinguish the first SRS signal from the uplink signal and transmit them through different transmission links, a second switch 240 can be provided in the signal transmission module 200, and the second switch 240 is respectively connected to the signal processing module 800, the first transmission link 230, the first transmitting end 210, and the second transmitting end 210. End 220, therefore, when it is necessary to send the first SRS signal to the base station, the signal processing module 800 can first control the second switching switch 240 to make the first transmission chain 230 alternately connected to the first transmission end 210 and the second transmission end 220, and use the first transmission chain 230 to alternately transmit the uplink signal and the first SRS signal, so that the first SRS signal is transmitted to the duplexer 400 through the second transmission end 220 and the downlink signal end 420, and the uplink signal is transmitted to the duplexer 400 through the first transmission end 210 and the uplink signal end 410, thereby achieving transmission isolation between the first SRS signal and the uplink signal.

[0047] In one embodiment, the signal processing module 800 simultaneously controls the second switch 240 and alternately transmits the uplink signal and the first SRS signal using the first transmission link 230. This not only accurately isolates the transmission of the first SRS signal from the uplink signal, but also prevents signal transmission failures caused by untimely or erroneous transmission link switching. It is worth noting that the signal processing module 800 can simultaneously control the second switch 240 and alternately transmit the uplink signal and the first SRS signal using the first transmission link 230 at fixed time intervals or according to signal transmission time slots, and this embodiment does not specifically limit this. For example, when the signal processing module 800 synchronously controls the second switching switch 240 and utilizes the first transmission link 230 to alternately transmit the uplink signal and the first SRS signal according to the signal transmission time slot, the first transmission link 230 and the first transmitting end 210 can be connected within the time slot length for transmitting the uplink signal. At this time, only the uplink signal is transmitted within the time slot length; and the first transmission link 230 and the second transmitting end 220 are connected within the time slot length for transmitting the first SRS signal. At this time, only the first SRS signal is transmitted within the time slot length.

[0048] In addition, in one embodiment, referring to Figure 4 The signal transmission module 200 further includes a first transmission chain 230 and a second transmission chain 250. The first transmission chain 230 is connected to the signal processing module 800 and the first transmitting end 210 respectively, and the second transmission chain 250 is connected to the signal processing module 800 and the second transmitting end 220 respectively.

[0049] It is worth noting that Figure 4 The embodiment shown is similar to the above-mentioned embodiment. Figure 3 The embodiments shown are technical solutions that are parallel to each other.

[0050] In one embodiment, since the signal transmission module 200 includes a first transmission chain 230 and a second transmission chain 250, and the first transmission chain 230 is respectively connected to the signal processing module 800 and the first transmitting end 210, and the second transmission chain 250 is respectively connected to the signal processing module 800 and the second transmitting end 220, when the signal processing module 800 receives SRS request information from the base station and generates SRS information, the signal processing module 800 can modulate the SRS information to the downlink signal transmission frequency to obtain a first SRS signal. Since the frequency of the first SRS signal is different from the frequency of the uplink signal, the second transmission chain 250 can be used to transmit the first SRS signal, and the first transmission chain 230 can be used to transmit the uplink signal. Since the first transmission chain 230 and the second transmission chain 250 are isolated from each other, the first SRS signal and the uplink signal will not affect each other. Therefore, the first SRS signal and the uplink signal can be transmitted simultaneously, which not only does not affect the terminal sending the uplink signal to the base station, but also ensures that the terminal can send the first SRS signal to the base station, so that the base station can accurately judge the channel quality of the terminal's downlink channel based on the first SRS signal, thereby being able to more accurately adjust the base station's transmitting antenna so that the maximum gain direction of the base station's transmitting antenna can be more accurately directed towards the terminal, thereby improving the quality of the terminal receiving the base station signal.

[0051] In one embodiment, the second transmission link may be a dedicated link for transmitting the first SRS signal, or a universal link that can be configured to transmit the first SRS signal. An appropriate selection may be made based on actual application conditions, and this embodiment does not impose any specific limitation on this.

[0052] In addition, Figure 2 、 Figure 3 and Figure 4Different from the illustrated embodiment, in one embodiment, the signal processing module 800 can also modulate the SRS information to the uplink signal transmission frequency to obtain a second SRS signal. Therefore, the signal transmission module 200 can be used to transmit the second SRS signal to the duplexer 400 through the uplink signal terminal 410, so that the second SRS signal can be transmitted to the base station through the duplexer 400 and the signal transceiver antenna 100. It is worth noting that when the terminal sends the second SRS signal to the base station through the transmitting module 200, the duplexer 400 and the signal transceiver antenna 100, that is, when the terminal sends the second SRS signal to the base station through the uplink signal transmission link formed by the transmitting module 200, the duplexer 400 and the signal transceiver antenna 100, the uplink signal sent by the terminal to the base station will be temporarily interrupted. In order to reduce the impact of the sending of the second SRS signal on the sending of the uplink signal, the second SRS signal and the uplink signal can be sent at intervals, or the second SRS signal and the uplink signal can be allocated to different time slots, and different signals are sent according to different time slots. This embodiment does not specifically limit this.

[0053] In addition, in one embodiment, referring to Figure 5 The terminal further includes a signal receiving antenna 600 and a third switch 700. The third switch 700 is connected to the signal transmitting module 200, the signal receiving module 300, the signal receiving antenna 600 and the signal processing module 800 respectively.

[0054] In one embodiment, when the terminal includes a signal transceiver antenna 100 and a signal receiving antenna 600, the signal processing module 800 can control the third switching switch 700 to connect the signal transmission module 200 and the signal receiving antenna 600, and modulate the SRS information to the downlink signal transmission frequency to obtain a third SRS signal, and then use the signal transmission module 200 to transmit the third SRS signal to the base station through the signal receiving antenna 600.

[0055] In one embodiment, the number of signal receiving antennas 600 corresponds to the number of third switches 700, and the signal receiving antennas 600 and the third switches 700 are connected in a one-to-one correspondence. The number of receiving antennas 600 and the number of third switches 700 can be one or more, and can be appropriately selected based on actual application conditions. This embodiment does not specifically limit this.

[0056] In one embodiment, when a terminal includes a signal transceiver antenna 100 and a signal receiving antenna 600, that is, when the terminal includes multiple signal receiving antennas, when the terminal receives SRS request information from a base station, the terminal can transmit corresponding SRS information to the base station via these signal receiving antennas in turn. Since the terminal uses multiple signal receiving antennas to transmit SRS information to the base station, the base station can perform more accurate channel quality estimation based on the multiple received SRS information, thereby more accurately adjusting the base station's transmitting antenna so that the maximum gain direction of the base station's transmitting antenna can be more accurately oriented toward the terminal, thereby improving the quality of the base station signal received by the terminal.

[0057] Those skilled in the art will understand that the terminal structures involved in the above embodiments do not constitute a limitation on the embodiments of the present invention, and may include more or fewer components than those in the above figures, or a combination of certain components, or a different arrangement of components.

[0058] Based on the terminal structure of the above embodiment, various embodiments of a sounding reference signal transmission method for a frequency division duplex system are proposed below.

[0059] like Figure 6 As shown, Figure 6 is a flowchart of a method for transmitting a sounding reference signal in a frequency division duplex system according to an embodiment of the present invention. The transmission method can be applied to Figure 1 For the terminal supporting the FDD system in the embodiment shown, the transmission method includes but is not limited to the following steps:

[0060] Step S100, when an SRS request message is received from a base station through a signal receiving module, SRS message is generated according to the SRS request message;

[0061] Step S200: SRS information is sent to a base station via a signal transmission module, a duplexer, and a signal transceiver antenna.

[0062] In one embodiment, when the terminal position changes or the channel environment changes and the base station detects that the signal quality of the terminal has decreased, the base station will send SRS request information to the terminal. In addition, the base station can also send SRS request information to the terminal at regular intervals. Therefore, when the terminal receives the SRS request information from the base station through the signal receiving module, it can generate corresponding SRS information based on the SRS request information, and send the SRS information to the base station through the signal transmitting module, duplexer and signal transceiver antenna, so that the base station can perform corresponding channel quality estimation based on the SRS information, and thus can adjust the base station's transmitting antenna accordingly, so that the maximum gain direction of the base station's transmitting antenna can be toward the terminal, so as to improve the quality of the terminal receiving the base station signal.

[0063] In one embodiment, a signal transceiver antenna is an antenna with a relatively large operating frequency band that can support uplink and downlink signal transmission. The operating frequency of the signal transceiver antenna includes both the uplink and downlink signal transmission frequencies. Therefore, the terminal can transmit uplink signals and receive downlink signals via the signal transceiver antenna. Therefore, when the signal transceiver antenna receives SRS request information from a base station, the terminal can receive the SRS request information via a duplexer and a signal receiving module. The terminal can then generate SRS information based on the SRS request information and transmit the SRS information to the base station via the signal transmitting module, the duplexer, and the signal transceiver antenna. Therefore, for a terminal supporting an FDD system, when the signal receiving module receives SRS request information from a base station, the terminal can generate SRS information based on the SRS request information and transmit the SRS information to the base station using a transmission link formed by the transmitting module, the duplexer, and the signal transceiver antenna, thereby enabling the transmission of SRS information in an FDD system.

[0064] In addition, in one embodiment, when the terminal further includes a first switching switch, and the signal transmitting module includes a first transmitting end and a second transmitting end, and the first transmitting end is connected to the uplink signal end, and the first switching switch is respectively connected to the second transmitting end, the signal receiving module and the downlink signal end, then, referring to Figure 7 Step S200 may include but is not limited to the following steps:

[0065] Step S210, controlling the first switch to connect the second transmitting end and the downlink signal end;

[0066] Step S220, modulating the SRS information to a downlink signal transmission frequency to obtain a first SRS signal;

[0067] Step S230 : Using the signal transmission module to transmit the first SRS signal, so that the first SRS signal is transmitted to the duplexer through the second transmitting end and the downlink signal end, and is then transmitted to the base station through the duplexer and the signal transceiver antenna.

[0068] In one embodiment, when the terminal receives SRS request information from the base station and generates SRS information, the terminal can control the first switching switch to connect the second transmitting end and the downlink signal end, and modulate the SRS information to the downlink signal transmission frequency to obtain a first SRS signal. Then, the first SRS signal is transmitted using the signal transmission module, so that the first SRS signal can be transmitted to the duplexer through the second transmitting end and the downlink signal end, and transmitted to the base station through the duplexer and the signal transceiver antenna.

[0069] In one embodiment, by controlling the first switching switch to interconnect the second transmitting end and the downlink signal end, the signal transmitting module, the duplexer, and the signal transceiver antenna can form a transmission link for transmitting a signal modulated to the downlink signal transmission frequency. Therefore, after the terminal modulates the SRS information to the downlink signal transmission frequency to obtain the first SRS signal, the SRS information can be sent to the base station using this transmission link. Because the frequency of the first SRS signal is consistent with the downlink signal transmission frequency, when the base station receives the first SRS signal, it can accurately determine the channel quality of the terminal's downlink channel, thereby more accurately adjusting the base station's transmitting antenna so that the maximum gain direction of the base station's transmitting antenna is more accurately oriented toward the terminal, thereby improving the quality of the terminal's reception of the base station signal.

[0070] It is worth noting that although the first SRS signal and the uplink signal are sent using different transmission links, they both use a common transmission module. Therefore, in the process of sending the first SRS signal to the base station, the uplink signal sent by the terminal to the base station will be temporarily interrupted. In order to reduce the impact of the sending of the first SRS signal on the sending of the uplink signal, the first SRS signal and the uplink signal can be sent at intervals, or the first SRS signal and the uplink signal can be allocated to different time slots, and different signals are sent according to different time slots. This embodiment does not specifically limit this.

[0071] In addition, in one embodiment, when the signal transmission module further includes a first transmission link and a second switching switch, and the second switching switch is connected to the first transmission link, the first transmitting end and the second transmitting end respectively, then, referring to Figure 8 The transmission of the first SRS signal by the signal transmission module in step S230 may include but is not limited to the following steps:

[0072] Step S231, controlling the second switch to enable the first transmission link to alternately connect to the first transmitting end and the second transmitting end;

[0073] Step S232: alternately transmit an uplink signal and a first SRS signal using the first transmission link, wherein the first SRS signal is transmitted to the duplexer via the second transmitting end and the downlink signal end, and the uplink signal is transmitted to the duplexer via the first transmitting end and the uplink signal end.

[0074] In one embodiment, when a terminal receives SRS request information from a base station and generates SRS information, and modulates the SRS information to a downlink signal transmission frequency to obtain a first SRS signal, since the frequency of the first SRS signal is different from the frequency of the uplink signal, in order to distinguish the first SRS signal from the uplink signal and transmit them through different transmission links, a second switching switch can be provided in the signal transmission module, and the second switching switch is respectively connected to the first transmission link, the first transmitting end, and the second transmitting end. Therefore, when it is necessary to send the first SRS signal to the base station, the terminal can first control the second switching switch so that the first transmission link alternately connects the first transmitting end and the second transmitting end, and uses the first transmission link to alternately transmit the uplink signal and the first SRS signal, so that the first SRS signal is transmitted to the duplexer through the second transmitting end and the downlink signal end, while the uplink signal is transmitted to the duplexer through the first transmitting end and the uplink signal end, thereby achieving transmission isolation between the first SRS signal and the uplink signal.

[0075] In one embodiment, the terminal synchronously controls the second switch and alternately transmits the uplink signal and the first SRS signal using the first transmission link. This not only accurately isolates the transmission of the first SRS signal and the uplink signal, but also avoids signal transmission failures caused by untimely or erroneous transmission link switching. It is worth noting that the synchronous control of the second switch and alternate transmission of the uplink signal and the first SRS signal using the first transmission link can be performed at fixed time intervals or according to signal transmission time slots, and this embodiment does not specifically limit this. For example, when synchronous control of the second switch and alternate transmission of the uplink signal and the first SRS signal using the first transmission link are performed according to signal transmission time slots, the first transmission link and the first transmitter can be connected within the time slot length for transmitting the uplink signal, in which case only the uplink signal is transmitted within the time slot length; and the first transmission link and the second transmitter can be connected within the time slot length for transmitting the first SRS signal, in which case only the first SRS signal is transmitted within the time slot length.

[0076] In addition, in one embodiment, when the signal transmission module further includes a first transmission link and a second transmission link, and the first transmission link is connected to the first transmission end, and the second transmission link is connected to the second transmission end, then, referring to Figure 9 The step S230 of transmitting the first SRS signal by using the signal transmission module may also include but is not limited to the following steps:

[0077] Step S233: Transmit the first SRS signal using the second transmission link;

[0078] Step S234: Transmit the uplink signal using the first transmission link.

[0079] It is worth noting that Figure 9 The embodiment shown is similar to the above-mentioned embodiment. Figure 8 The embodiments shown are technical solutions that are parallel to each other.

[0080] In one embodiment, since the signal transmission module includes a first transmission link and a second transmission link, and the first transmission link is connected to the first transmitting end and the second transmission link is connected to the second transmitting end, when the terminal receives SRS request information from the base station and generates SRS information, the terminal can modulate the SRS information to the downlink signal transmission frequency to obtain a first SRS signal. Since the frequency of the first SRS signal is different from the frequency of the uplink signal, the first SRS signal can be transmitted using the second transmission link, and the uplink signal can be transmitted using the first transmission link. Since the first transmission link and the second transmission link are isolated from each other, the first SRS signal and the uplink signal do not affect each other. Therefore, the first SRS signal and the uplink signal can be transmitted simultaneously. This not only does not affect the terminal's ability to transmit uplink signals to the base station, but also ensures that the terminal can transmit the first SRS signal to the base station. Therefore, the base station can accurately determine the channel quality of the terminal's downlink channel based on the first SRS signal, thereby more accurately adjusting the base station's transmitting antenna so that the maximum gain direction of the base station's transmitting antenna is more accurately oriented toward the terminal, thereby improving the quality of the base station signal received by the terminal.

[0081] In one embodiment, the second transmission link may be a dedicated link for transmitting the first SRS signal, or a universal link that can be configured to transmit the first SRS signal. An appropriate selection may be made based on actual application conditions, and this embodiment does not impose any specific limitation on this.

[0082] In addition, Figure 7 、 Figure 8 and Figure 9 In one embodiment, the reference Figure 10 Step S200 may also include but is not limited to the following steps:

[0083] Step S240, modulating the SRS information to the uplink signal transmission frequency to obtain a second SRS signal;

[0084] Step S250: Using the signal transmission module, the second SRS signal is transmitted to the duplexer through the uplink signal terminal, so that the second SRS signal is transmitted to the base station through the duplexer and the signal transceiver antenna.

[0085] In one embodiment, the terminal may further modulate the SRS information onto an uplink signal transmission frequency to obtain a second SRS signal. Therefore, the terminal may utilize a signal transmission module to transmit the second SRS signal to a duplexer via an uplink signal terminal, so that the second SRS signal can be transmitted to the base station via the duplexer and the signal transceiver antenna. It is noteworthy that while the terminal transmits the second SRS signal to the base station via the transmission module, the duplexer, and the signal transceiver antenna, i.e., while the terminal transmits the second SRS signal to the base station via the uplink signal transmission link formed by the transmission module, the duplexer, and the signal transceiver antenna, the uplink signal transmitted by the terminal to the base station may be temporarily interrupted. To reduce the impact of the transmission of the second SRS signal on the transmission of the uplink signal, the second SRS signal and the uplink signal may be transmitted at intervals, or the second SRS signal and the uplink signal may be allocated to different time slots, with different signals being transmitted corresponding to the different time slots. This embodiment does not specifically limit this.

[0086] In addition, in one embodiment, when the terminal further includes a signal receiving antenna and a third switch, and the third switch is connected to the signal transmitting module, the signal receiving module and the signal receiving antenna respectively, then, referring to Figure 11 The transmission method may also include but is not limited to the following steps:

[0087] Step S300, controlling the third switch to connect the signal transmitting module and the signal receiving antenna;

[0088] Step S400, modulating the SRS information to a downlink signal transmission frequency to obtain a third SRS signal;

[0089] Step S500: Utilize the signal transmitting module to transmit the third SRS signal to the base station via the signal receiving antenna.

[0090] In one embodiment, when the terminal includes a signal transmitting and receiving antenna and a signal receiving antenna, the terminal can control the third switching switch to connect the signal transmitting module and the signal receiving antenna, and modulate the SRS information to the downlink signal transmission frequency to obtain a third SRS signal, and then use the signal transmitting module to transmit the third SRS signal to the base station through the signal receiving antenna.

[0091] In one embodiment, the number of signal receiving antennas corresponds to the number of third switches, and the signal receiving antennas and the third switches are connected in a one-to-one correspondence. The number of receiving antennas and the number of third switches can be one or more, and can be appropriately selected based on actual application conditions. This embodiment does not specifically limit this.

[0092] In one embodiment, when a terminal includes a signal transceiver antenna and a signal receiving antenna, that is, when the terminal includes multiple signal receiving antennas, when the terminal receives SRS request information from a base station, the terminal may transmit corresponding SRS information to the base station via these signal receiving antennas in turn. Since the terminal transmits SRS information to the base station using multiple signal receiving antennas, the base station can perform more accurate channel quality estimation based on the multiple received SRS information, thereby more accurately adjusting the base station's transmitting antenna so that the maximum gain direction of the base station's transmitting antenna is more accurately oriented toward the terminal, thereby improving the quality of the base station signal received by the terminal.

[0093] In addition, an embodiment of the present invention further provides a terminal, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor.

[0094] The processor and the memory may be connected via a bus or other means.

[0095] It should be noted that the terminal in this embodiment can be Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 or Figure 5 The terminals in the illustrated embodiments all belong to the same inventive concept, and therefore have the same implementation principles and beneficial effects, which will not be described in detail here.

[0096] The non-transient software program and instructions required to implement the sounding reference signal transmission method of the above embodiment are stored in the memory. When executed by the processor, the sounding reference signal transmission method of the above embodiment is executed, for example, the above-described Figure 6 Method steps S100 to S200, Figure 7 Method steps S210 to S230, Figure 8 Method steps S231 to S232, Figure 9 Steps S233 to S234 of the method, Figure 10 Method steps S240 to S250, Figure 11 Method steps S300 to S500 in .

[0097] The terminal embodiment described above is merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0098] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. The computer-executable instructions are executed by a processor or controller, for example, by a processor in the above-mentioned terminal embodiment, so that the above-mentioned processor can execute the sounding reference signal transmission method in the above-mentioned embodiment, for example, executing the above-described Figure 6 Method steps S100 to S200, Figure 7 Method steps S210 to S230, Figure 8 Method steps S231 to S232, Figure 9 Steps S233 to S234 of the method, Figure 10 Method steps S240 to S250, Figure 11 Method steps S300 to S500 in .

[0099] Those skilled in the art will appreciate that all or some of the steps and systems in the method disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include computer storage media (or non-transitory media) and communication media (or temporary media). As known to those skilled in the art, the term computer storage media is included in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) and is volatile and non-volatile, removable, and non-removable. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory, or other memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0100] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the above implementation. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A terminal, characterized in that: include: Signal transceiver antenna; Signal transmission module; signal receiving module; A duplexer, comprising an uplink signal terminal, a downlink signal terminal and a signal common terminal, wherein the uplink signal terminal is connected to the signal transmitting module, the downlink signal terminal is connected to the signal receiving module, and the signal common terminal is connected to the signal transmitting and receiving antenna; a signal processing module, connected to the signal transmitting module and the signal receiving module, respectively, the signal processing module being configured to, upon receiving a sounding reference signal (SRS) request information from a base station via the signal receiving module, generate SRS information according to the SRS request information, and send the SRS information to the base station via the signal transmitting module, the duplexer, and the signal transceiver antenna; The terminal further includes a first switching switch, the signal transmitting module includes a first transmitting end and a second transmitting end, the first transmitting end is connected to the uplink signal end, and the first switching switch is respectively connected to the second transmitting end, the signal receiving module, the downlink signal end and the signal processing module; The signal processing module is further configured to: Controlling the first switch to connect the second transmitting end and the downlink signal end; Modulating the SRS information to a downlink signal transmission frequency to obtain a first SRS signal; The first SRS signal is transmitted by using the signal transmission module, so that the first SRS signal is transmitted to the duplexer through the second transmitting end and the downlink signal end, and is transmitted to the base station through the duplexer and the signal transceiver antenna.

2. The terminal according to claim 1, wherein The signal transmission module further includes a first transmission link and a second switch, the second switch being connected to the signal processing module, the first transmission link, the first transmitting end, and the second transmitting end respectively, and the first transmission link being connected to the signal processing module; The signal processing module is further configured to: controlling the second switch so that the first transmission link alternately connects the first transmitting end and the second transmitting end; The first transmission link is used to alternately transmit an uplink signal and the first SRS signal, wherein the first SRS signal is transmitted to the duplexer through the second transmitting end and the downlink signal end, and the uplink signal is transmitted to the duplexer through the first transmitting end and the uplink signal end.

3. The terminal according to claim 1, wherein The signal transmission module further includes a first transmission link and a second transmission link, the first transmission link is connected to the signal processing module and the first transmitting end respectively, and the second transmission link is connected to the signal processing module and the second transmitting end respectively; The signal processing module is further configured to: transmitting the first SRS signal using the second transmission link; An uplink signal is transmitted using the first transmission link. The terminal according to claim 1 , wherein: The signal processing module is further configured to: Modulating the SRS information to an uplink signal transmission frequency to obtain a second SRS signal; The signal transmission module is used to transmit the second SRS signal to the duplexer through the uplink signal end, so that the second SRS signal is transmitted to the base station through the duplexer and the signal transceiver antenna.

5. The terminal according to any one of claims 1 to 4, characterized in that: It also includes a signal receiving antenna and a third switch, wherein the third switch is connected to the signal transmitting module, the signal receiving module, the signal receiving antenna and the signal processing module respectively; The signal processing module is further configured to: Controlling the third switch to connect the signal transmitting module and the signal receiving antenna; Modulating the SRS information to a downlink signal transmission frequency to obtain a third SRS signal; The signal transmitting module is used to transmit the third SRS signal to a base station through the signal receiving antenna.

6. A method for transmitting a sounding reference signal for a frequency division duplex (FDD) system, the method being applied to a terminal supporting a frequency division duplex (FDD) system, the terminal comprising a signal transceiver antenna, a duplexer, a signal transmitting module, a signal receiving module, and a signal processing module; the duplexer comprising an uplink signal terminal, a downlink signal terminal, and a signal common terminal; the uplink signal terminal being connected to the signal transmitting module, the downlink signal terminal being connected to the signal receiving module, the signal common terminal being connected to the signal transceiver antenna, and the signal processing module being connected to the signal transmitting module and the signal receiving module, respectively; The method comprises: When receiving SRS request information from a base station through the signal receiving module, generating SRS information according to the SRS request information; Sending the SRS information to a base station through the signal transmission module, the duplexer and the signal transceiver antenna; The terminal further includes a first switching switch, the signal transmitting module includes a first transmitting end and a second transmitting end, the first transmitting end is connected to the uplink signal end, and the first switching switch is respectively connected to the second transmitting end, the signal receiving module and the downlink signal end; The sending of the SRS information to a base station through the signal transmission module, the duplexer, and the signal transceiver antenna includes: Controlling the first switch to connect the second transmitting end and the downlink signal end; Modulating the SRS information to a downlink signal transmission frequency to obtain a first SRS signal; The first SRS signal is transmitted by using the signal transmission module, so that the first SRS signal is transmitted to the duplexer through the second transmitting end and the downlink signal end, and is transmitted to the base station through the duplexer and the signal transceiver antenna.

7. The method according to claim 6, characterized in that The signal transmission module further includes a first transmission link and a second switch, wherein the second switch is connected to the first transmission link, the first transmitting end, and the second transmitting end respectively; The transmitting the first SRS signal by using the signal transmitting module includes: controlling the second switch so that the first transmission link alternately connects the first transmitting end and the second transmitting end; The first transmission link is used to alternately transmit an uplink signal and the first SRS signal, wherein the first SRS signal is transmitted to the duplexer through the second transmitting end and the downlink signal end, and the uplink signal is transmitted to the duplexer through the first transmitting end and the uplink signal end.

8. The method according to claim 6, characterized in that The signal transmission module further includes a first transmission link and a second transmission link, wherein the first transmission link is connected to the first transmitting end, and the second transmission link is connected to the second transmitting end; The transmitting the first SRS signal by using the signal transmitting module includes: transmitting the first SRS signal using the second transmission link; An uplink signal is transmitted using the first transmission link.

9. The method according to claim 6, characterized in that The sending of the SRS information to a base station through the signal transmission module, the duplexer, and the signal transceiver antenna includes: Modulating the SRS information to an uplink signal transmission frequency to obtain a second SRS signal; The signal transmission module is used to transmit the second SRS signal to the duplexer through the uplink signal end, so that the second SRS signal is transmitted to the base station through the duplexer and the signal transceiver antenna.

10. The method according to any one of claims 6 to 9, characterized in that The terminal further includes a signal receiving antenna and a third switch, wherein the third switch is connected to the signal transmitting module, the signal receiving module and the signal receiving antenna respectively; The method further comprises: Controlling the third switch to connect the signal transmitting module and the signal receiving antenna; Modulating the SRS information to a downlink signal transmission frequency to obtain a third SRS signal; The signal transmitting module is used to transmit the third SRS signal to a base station through the signal receiving antenna.

11. A terminal comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the sounding reference signal transmission method according to any one of claims 6 to 10 when executing the computer program.

12. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the sounding reference signal transmission method according to any one of claims 6 to 10.

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