CN108737051A

CN108737051A - A kind of transmission method, relevant device and the system of detection reference signal SRS

Info

Publication number: CN108737051A
Application number: CN201710276872.4A
Authority: CN
Inventors: 王三新
Original assignee: Shenzhen Jinli Communication Equipment Co Ltd
Current assignee: Shenzhen Jinli Communication Equipment Co Ltd
Priority date: 2017-04-25
Filing date: 2017-04-25
Publication date: 2018-11-02
Also published as: WO2018196337A1

Abstract

The embodiment of the invention discloses a kind of transmission method, relevant device and the system of detection reference signal SRS, the method includes：System bandwidth is divided at least one configured bandwidth by base station, and each configured bandwidth in respectively described at least one configured bandwidth configures corresponding SRS parameter set information, and the SRS parameter set information is used to determine the mode that terminal sends SRS；Determine that the terminal sends the corresponding target configured bandwidths of SRS；SRS configuration informations are sent to the terminal, the SRS configuration informations include the mark of each configured bandwidth corresponding SRS parameter set information and the target configured bandwidth at least one configured bandwidth.Using the embodiment of the present invention, the SRS in 5G under different business scene can be supported to send, improve integrality and the flexibility of SRS transmissions.

Description

Sounding Reference Signal (SRS) transmission method, related equipment and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a related device, and a system for transmitting a sounding reference signal SRS.

Background

With the commercial use of fourth generation communication technologies and the continuous growth of mobile services, research work on fifth generation communication technologies (5G) has been started worldwide. 5G is a multi-technology converged communication, and meets the requirements of wide data and service connection through technology alternation and innovation.

The third generation partnership project 3GPP has established a Study Item (SI) on 5G new air interface (NewRAT, NR) technology at 71 conferences on the wireless network RAN. Currently, the research of 3GPP for new NR over air interfaces mainly focuses on the following aspects: initial access, channel coding, Multiple-Input Multiple-Output (MIMO), scheduling and Hybrid Automatic repeat request (HARQ), flexible duplexing, and interference cancellation.

In the MIMO research process, different pilot transmission schemes need to be designed according to different transmission requirements in order to improve performance. At present, the pilots discussed in the 3GPP standard mainly include Channel state pilot Reference Signal (CSI-RS), Demodulation Reference Signal (DMRS), Sounding Reference Signal (SRS), and the like.

In the prior art, the SRS exists in LTE, but the SRS cannot support SRS transmission in multiple service scenarios. Therefore, a more complete and flexible SRS transmission mechanism is needed.

Disclosure of Invention

The embodiment of the invention provides a Sounding Reference Signal (SRS) transmission method, related equipment and a system, which can support SRS transmission in 5G under different service scenes and improve the integrity and flexibility of SRS transmission.

In a first aspect, an embodiment of the present invention provides a method for transmitting a sounding reference signal SRS, where the method includes:

a base station divides at least one configuration bandwidth in a system bandwidth, and configures corresponding SRS parameter set information for each configuration bandwidth in the at least one configuration bandwidth, wherein the SRS parameter set information is used for determining the SRS sending mode of a terminal;

the base station determines a target configuration bandwidth corresponding to SRS sent by the terminal;

the base station sends SRS configuration information to the terminal, wherein the SRS configuration information comprises SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of the target configuration bandwidth, and the SRS configuration information is used for the terminal to send the SRS to the base station on the target configuration bandwidth according to the SRS sending mode corresponding to the target configuration bandwidth.

Specifically, the base station may divide the system bandwidth into at least one configuration bandwidth according to KPIs corresponding to different service data. Further, according to KPIs corresponding to different service data, corresponding SRS parameter set information may also be configured for each configuration bandwidth of the at least one configuration bandwidth, where the SRS parameter set information is used to determine a method for the terminal to transmit an SRS. By implementing the embodiment of the invention, the SRS transmission under different service scenes in 5G can be supported, and the completeness and flexibility of the SRS transmission are realized.

In some embodiments, the base station may divide the system bandwidth into at least one configured bandwidth according to the number of terminals in the serving cell and KPIs corresponding to different service data.

By executing the steps, the base station can divide a larger configuration bandwidth for the terminal supporting more service data and divide a smaller configuration bandwidth for the terminal supporting less service data, so as to realize the rationality of service data transmission.

In some embodiments, the determining, by the base station, a target configuration bandwidth corresponding to SRS transmission by the terminal includes: the base station determines a target configuration bandwidth corresponding to SRS sent by the terminal according to the KPI corresponding to the service data supported by the terminal; or, the base station determines a target configuration bandwidth corresponding to the SRS transmitted by the terminal according to the working frequency band supported by the terminal.

By executing the above steps, the base station can determine the target configuration frequency band occupied by the terminal for sending the SRS, and further determine the target SRS parameter set information corresponding to the target configuration frequency band, that is, determine the target mode for the terminal for sending the SRS, and thus, the terminal is padded with the target mode for sending the SRS.

In some embodiments, the SRS parameter set information is determined by a key performance indicator KPI corresponding to service data supported by the terminal. Specifically, the KPI indicator is a parameter indicator used for evaluating the quality of service or performance, and may include delay, reliability, throughput, or other parameter information used for influencing SRS transmission. The SRS parameter set information may include subcarrier spacing, symbol length, or other parameter information for determining SRS transmission for a terminal.

In some embodiments, the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to SRS transmission determined by the base station by the terminal; the SRS configuration information is further used for the terminal to transmit the SRS to the base station in sequence according to the sequence of the identifier of the at least one hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth after transmitting the SRS to the base station over the target configuration bandwidth, where the hopping bandwidth and the target configuration bandwidth have the same bandwidth.

By performing the above steps, the method in which the base station can configure SRS transmission for the terminal is as follows: and the terminal sequentially transmits the SRS to the base station according to the SRS transmission mode corresponding to the SRS parameter set information corresponding to the target configuration bandwidth and the sequence of the at least one identifier of the frequency hopping bandwidth, so that the frequency hopping transmission of the SRS is completed among a plurality of configuration bandwidths, and the frequency hopping transmission of the SRS among the configuration bandwidths is realized.

In some embodiments, the target configuration bandwidth comprises at least one frequency hopping sub-bandwidth, and the SRS configuration information further comprises an identification of the at least one frequency hopping sub-bandwidth; the SRS configuration information is used for the terminal to transmit the SRS to the base station on the target configuration bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth, and specifically includes: and the SRS configuration information is used for the terminal to sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

By performing the above steps, the method in which the base station can configure SRS transmission for the terminal is as follows: and the terminal sequentially transmits the SRS to the base station according to the SRS transmission mode corresponding to the target configuration bandwidth and the sequence of the identification of the at least one frequency hopping sub-bandwidth so as to complete the frequency hopping transmission of the SRS in a certain configuration bandwidth and realize the frequency hopping transmission of the SRS in the configuration bandwidth.

In some embodiments, the base station may send the SRS configuration information or the SRS parameter set information corresponding to each of the at least one configuration bandwidth to the base station in a broadcast message or a common control message.

In a second aspect, an embodiment of the present invention provides a method for transmitting a sounding reference signal SRS, where the method includes:

a terminal receives SRS configuration information issued by a base station, wherein the SRS configuration information comprises SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of a target configuration bandwidth corresponding to an SRS sent by the terminal, and the SRS parameter set information is used for determining the SRS sending mode of the terminal;

and the terminal transmits the SRS to the base station on the target configuration bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth.

Specifically, the terminal may receive SRS configuration information sent by the base station, and then the terminal may determine, from the SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth, a manner of sending an SRS for the terminal corresponding to the target configuration bandwidth; finally, the terminal sends the SRS to the base station on the target configuration bandwidth according to the terminal SRS sending mode corresponding to the target configuration bandwidth; by implementing the embodiment of the invention, the SRS transmission under different service scenes in 5G can be supported, and the completeness and flexibility of the SRS transmission are realized.

In some embodiments, the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to SRS transmission by the terminal; after the sending the SRS to the base station over the target configuration bandwidth, the method further includes: and the terminal sequentially transmits the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth, wherein the frequency hopping bandwidth and the target configuration bandwidth have the same frequency bandwidth.

By executing the above steps, the terminal can complete the frequency hopping transmission of the SRS between each frequency hopping bandwidth according to the SRS transmission mode configured by the base station.

In some embodiments, the target configuration bandwidth comprises at least one frequency hopping sub-bandwidth, and the SRS configuration information further comprises an identification of the at least one frequency hopping sub-bandwidth; the terminal sends the SRS to the base station on the target configuration bandwidth according to the SRS sending mode corresponding to the target configuration bandwidth, including: and the terminal sequentially transmits the SRS to the base station according to the sequence of the identification of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

By executing the above steps, the terminal can complete the frequency hopping transmission of the SRS within the configured bandwidth according to the SRS transmission mode configured by the base station.

In some embodiments, the frequency hopping bandwidth includes an identifier of at least one frequency hopping sub-bandwidth, and the terminal sequentially transmits the SRS to the base station according to an order of the identifier of the at least one frequency hopping bandwidth and a SRS transmission mode corresponding to the target configuration bandwidth, including: the terminal may sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

In some embodiments, the terminal acquires the SRS parameter set information through a broadcast message or a common control message.

With reference to the first aspect or the second aspect, in some embodiments, the at least one frequency hopping bandwidth is obtained by repartitioning, by the base station, the system bandwidth according to a frequency bandwidth of the target configuration bandwidth.

In combination with the first or second aspect, in some embodiments, the SRS parameter set information comprises a subcarrier spacing and a symbol length; the bandwidth of the configured bandwidth is a positive integer multiple of the subcarrier spacing.

With reference to the first aspect or the second aspect, in some embodiments, frequency domain resources occupied by any two configuration bandwidths of the at least one configuration bandwidth do not overlap.

In a third aspect, an embodiment of the present invention provides a base station, including a functional unit configured to perform the method of the first aspect.

In a fourth aspect, an embodiment of the present invention provides a terminal, including a functional unit configured to execute the method of the second aspect.

In a fifth aspect, an embodiment of the present invention provides a base station, including a memory, an input device, an output device, and a processor coupled to the input device and the output device; the memory is configured to store instructions, the processor is configured to execute the instructions, and the input device and the output device are configured to communicate with other devices under control of the processor; wherein the processor, when executing the instructions, performs the method described in the first aspect above.

In a sixth aspect, an embodiment of the present invention provides a terminal, including a memory, an input device, an output device, and a processor coupled to the input device and the output device; the memory is configured to store instructions, the processor is configured to execute the instructions, and the input device and the output device are configured to communicate with other devices under control of the processor; wherein the processor, when executing the instructions, performs the method described in the first aspect above.

In a seventh aspect, a system for transmitting sounding reference signals SRS is provided, including a base station and a terminal; wherein,

the base station may be the base station of the third or fifth aspect;

the terminal may be the base station of the fourth or sixth aspect.

In an eighth aspect, a computer-readable storage medium is provided that stores program code for sounding reference signal, SRS, transmission. The program code comprises instructions for performing the method described in the first aspect above.

In a ninth aspect, a computer-readable storage medium is provided that stores program code for sounding reference signal, SRS, transmission. The program code comprises instructions for performing the method described in the second aspect above.

By implementing the embodiment of the invention, the SRS transmission under different service scenes in 5G can be supported, and the completeness and flexibility of the SRS transmission are realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart illustrating a method for transmitting a sounding reference signal SRS according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a configured bandwidth partitioning according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a terminal transmitting an SRS on a symbol N according to an embodiment of the present invention;

fig. 4 is a schematic diagram of SRS hopping between configured bandwidths according to an embodiment of the present invention;

fig. 5 is a schematic diagram of equally dividing a system bandwidth into 5 configuration bandwidths according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a terminal transmitting an SRS according to an embodiment of the present invention;

fig. 7 is a schematic diagram of another terminal transmitting an SRS according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a transmission system of a sounding reference signal SRS according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

In particular implementations, the terminals described in embodiments of the invention include, but are not limited to, other portable devices such as mobile phones, laptop computers, or tablet computers having touch sensitive surfaces (e.g., touch screen displays and/or touch pads). It should also be understood that in some embodiments, the device is not a portable communication device, but is a desktop computer having a touch-sensitive surface (e.g., a touch screen display and/or touchpad).

In the discussion that follows, a terminal that includes a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, mouse, and/or joystick.

Referring to fig. 1, which is a flowchart illustrating a method for transmitting a sounding reference signal SRS according to an embodiment of the present invention, the method shown in the figure may include the following steps:

step S101, a base station divides at least one configuration bandwidth in a system bandwidth, and configures corresponding SRS parameter set information for each configuration bandwidth in the at least one configuration bandwidth; the SRS parameter set information is used for determining the SRS sending mode of the terminal.

In the embodiment of the invention, the base station divides the system bandwidth into one or more configuration bandwidths according to the key performance indicators KPI corresponding to different service data. The base station can also respectively configure corresponding SRS parameter set information for each configuration bandwidth in the at least one configuration bandwidth according to Key Performance Indicators (KPIs) corresponding to different service data.

There are a variety of vertical traffic scenarios in 5G, including one or more of the following: mobile Broadband enhancement (eMBB), Ultra-high-Reliable Low-Latency Communications (URLLC), large-scale internet of things (mtc), or other application scenarios. Different service scenes correspond to different service data, Key Performance Indicators (KPIs) in different service scenes may be different, that is, different service data may correspond to different KPIs.

Under the same service scene, the types of services supported by the terminal may be the same or different. Different services (or types of services) may correspond to different KPIs. That is, for the same service scenario, there may be different KPIs, which are suitable for different types of services.

For example, in a URLLC service scenario, the specific service types supported by the URLLC service scenario may include car networking services, industrial control services, telemedicine services, and so on, which may correspond to different KPIs. For example, for car networking services, its KPI is more concerned about reliability; for industrial control business, the KPI is concerned more about reliability and time delay; for telemedicine services, the KPI is more concerned about data volume and reliability. At this time, the configuration bandwidths which can be divided by the base station for the car networking service, the industrial control service and the remote medical service are configuration bandwidth 1, configuration bandwidth 1 and configuration bandwidth 3 respectively, and configuration bandwidth 1< configuration bandwidth 2< configuration bandwidth 3. Meanwhile, the base station may also configure corresponding SRS parameter set information, such as subcarrier spacing and symbol length, for the three configuration bandwidths (configuration bandwidths 1, 2, and 3) according to the KPIs corresponding to the three services. Respectively as follows: the subcarrier interval 1 corresponding to the car networking service is less than the subcarrier interval 2 corresponding to the industrial control service is less than the subcarrier interval 3 corresponding to the remote medical service, and the symbol length 1 corresponding to the car networking service is greater than the symbol length 2 corresponding to the industrial control service and is greater than the symbol length 3 corresponding to the remote medical service.

In some embodiments, the base station may further divide the system bandwidth into at least one configured bandwidth according to the number of terminals in the serving cell and KPIs corresponding to different service data.

In an embodiment of the present invention, if the amount of the first service data supported by the terminal is a first amount, the configured bandwidth is a first configured bandwidth, and the first configured bandwidth is used for transmitting the first service data; if the number of the second service data supported by the terminal to be transmitted is a second number, the configured bandwidth is a second configured bandwidth, and the second configured bandwidth is used for transmitting the second service data; and if the first quantity is greater than the second quantity and the KPI corresponding to the first service data is different from the KPI corresponding to the second service data, the first configuration bandwidth is greater than the second configuration bandwidth.

For example, if there are 100 ues in the current serving cell of the base station, 70 ues have requirements for the time delay KPI when transmitting the first service data, and the remaining 30 ues have requirements for the reliability KPI when transmitting the second service data. Then, at this time, the configured bandwidth divided for the first service data by the base station is a first configured bandwidth, and the configured bandwidth divided for the second service data is a second configured bandwidth, where the first configured bandwidth is greater than the second configured bandwidth. For example, in the case of a system bandwidth of 100MHZ (megahertz), the configured bandwidth divided by the base station for the first service data is 80M, and the configured bandwidth divided by the base station for the second service data is 20 MHZ. That is, the base station divides 80M bandwidth for transmitting the first service data, divides 30M bandwidth for transmitting the second service data, the KPI indicator corresponding to the first service data is time delay, and the KPI indicator corresponding to the second service data is reliability.

In some embodiments, please refer to fig. 2, which is a schematic diagram illustrating a configured bandwidth partitioning according to an embodiment of the present invention. As can be seen from the figure, the base station may divide the system bandwidth (e.g., 100MHz) supported by the base station into N configuration bandwidths, where each configuration bandwidth does not overlap with each other, and the frequency bandwidths of each configuration bandwidth may also be different.

In some embodiments, the base station may also update or re-partition each configured bandwidth according to KPIs corresponding to different service data in real time or periodically.

In some embodiments, the type of service supported by each of the at least one configuration bandwidth may be the same or different. That is, each of the at least one configuration bandwidth may be used for transmitting different types of service data and may also be used for transmitting the same type of service data. The frequency bandwidths corresponding to each configuration bandwidth in the at least one configuration bandwidth may be the same or different. However, the frequency domain resources occupied by each configuration bandwidth in the at least one configuration bandwidth are not overlapped with each other, that is, each configuration bandwidth occupies different frequency domain resources or frequency bandwidths on the system bandwidth.

In yet another embodiment of the present invention, the SRS parameter set information includes a subcarrier spacing and a symbol length; if the terminal transmits a KPI corresponding to first service data as a first indicator, a subcarrier interval in first SRS parameter set information corresponding to the first service data is a first subcarrier interval and a symbol length in the first SRS parameter set information is a first symbol length, and a first configuration bandwidth corresponding to the first SRS parameter set information is used for transmitting the first service data; if the terminal transmits a KPI corresponding to second service data as a second index, a subcarrier interval in second SRS parameter set information corresponding to the second service data is a second subcarrier interval and a symbol length in the second SRS parameter set information is a second symbol length, and a second configuration bandwidth corresponding to the second SRS parameter set information is used for transmitting the second service data; wherein the first indicator is higher than the second indicator, then the first subcarrier spacing is greater than the second subcarrier spacing and the first symbol length is less than the second symbol length.

For example, in an unmanned scenario, traffic data such as an automobile control command has high requirements on reliability and a delay KPI (e.g., transmission delay does not exceed 1ms), at this time, the SRS parameter set information that the base station may configure/bind for the traffic data with high requirements on such delay KPI may be first SRS parameter set information, which may include information such as a first subcarrier interval (e.g., 60KHZ, 120KHZ, etc.), a first symbol length (e.g., 16.67us, 8.3us), and the like. For traffic data such as video data, voice data, etc. that is not critical to timeliness or latency (e.g., transmission latency does not exceed 10ms), the SRS parameter set information that the base station may configure/bind for such traffic data may be second SRS parameter set information, which may include information of a second subcarrier spacing (e.g., 15kHZ, 60kHZ, etc.), a second symbol length (e.g., 66.67us, 16.67us), etc. The first subcarrier spacing is greater than the second subcarrier spacing, and the first symbol length is less than the second symbol length.

In some embodiments, the bandwidth of the configured bandwidth is a positive integer multiple of the subcarrier spacing. That is, a plurality of subcarrier intervals can be spliced into the configuration bandwidth on the frequency domain resource.

For understanding that the SRS parameter set information is used to determine a manner in which the terminal transmits the SRS, reference may be specifically made to fig. 3, which is a schematic diagram of the terminal transmitting the SRS on a symbol N according to an embodiment of the present invention. As can be seen from fig. 3, the SRS parameter set information uses different subcarrier intervals and different symbol lengths. As shown in fig. 3, the SRS is transmitted by using a subcarrier spacing of 15kHZ on the configured bandwidth of the vertical line grid; and transmitting the SRS by adopting a subcarrier interval of 30kHZ on the configuration bandwidth of the horizontal line grid. It can also be seen from the figure that the corresponding symbol length on the configuration bandwidth of the vertical line grid and the configuration bandwidth of the horizontal line grid is 2:1, that is, the terminal transmits the SRS to the base station in the time of one symbol length on the configuration bandwidth of the vertical line grid, whereas the terminal transmits the SRS to the base station in the time of 0.5 symbol length on the configuration bandwidth of the horizontal line grid.

The symbol N is merely an example and is not limited. Here, symbol N may be symbol 1, symbol 2 …, or the last symbol of the data subframe, and since symbol N is prior art, it is not described in detail here.

Step S102, the base station determines a target configuration bandwidth corresponding to the SRS sent by the terminal.

In a specific implementation manner of step S102, the base station may determine, according to a type of a service supported by the terminal, a target configuration bandwidth corresponding to SRS transmission by the terminal.

Specifically, the base station is a configuration bandwidth divided according to KPIs corresponding to service data supported by each terminal. As can be seen, for each terminal, the base station may determine, according to the KPI corresponding to the service data supported by the terminal, a target configuration bandwidth corresponding to the SRS sent by the terminal, where the target configuration bandwidth is a bandwidth in the at least one configuration bandwidth.

In another specific implementation manner of step S102, the base station may determine, according to an operating frequency band supported by the terminal, a target configuration bandwidth corresponding to SRS transmission by the terminal.

Specifically, the working frequency bands correspondingly set by different manufacturers for the terminals leaving the factory can be different; alternatively, the radio frequency modules (e.g., WIFI, SIM card) of different terminals may use different operating frequency bands for networking communication. For example, the mobile terminal may support configuration bandwidths corresponding to two frequency bands of 1880-1900MHz (megahertz) and 2010-2025MHz, the unicom terminal may support configuration bandwidths corresponding to two frequency bands of 1940-1955MHz and 2130-2145MHz, and the telecommunication terminal may support configuration bandwidths corresponding to two frequency bands of 1920-1935MHz and 2110-2125 MHz.

It should be noted that the target configuration bandwidth is a bandwidth in the at least one configuration bandwidth, and the target configuration bandwidth is a bandwidth occupied by the terminal for sending the SRS, which is determined by the base station, that is, a mode for the terminal for sending the SRS is determined.

In some embodiments, the base station may also configure corresponding transmission parameters for the terminal to transmit SRS. The transmission parameters are also used to determine the SRS transmission mode of the terminal. The transmission parameters and the SRS parameter set information include parameter information used to determine a mode in which the terminal transmits the SRS in two dimensions. The transmission parameters may include an identification of the target configuration bandwidth, a transmission bandwidth type (e.g., full bandwidth), periodic or aperiodic transmission, a transmission period of the SRS (or transmission time of the SRS), a multiple access scheme (e.g., frequency division multiple access, code division multiple access, etc.), or some other parameter information for affecting the terminal to transmit the SRS.

In some embodiments, the transmission bandwidth types may include full bandwidth, half bandwidth, 1/4 bandwidth, and 1/2 bandwidthⁿBandwidth, and the like, where n is a positive integer. The multiple access method is to support multiple terminals to implement SRS multiplexing for multiple user terminals by using frequency division multiple access and/or code division multiple access within the same configured bandwidth, and belongs to the prior art, and is not described in detail here.

Step S103 of sending, to the terminal, SRS configuration information, where the SRS configuration information includes SRS parameter set information corresponding to each configuration bandwidth of the at least one configuration bandwidth and an identifier of the target configuration bandwidth, and the SRS configuration information is used for the terminal to send, to the base station, the SRS over the target configuration bandwidth in a manner of sending an SRS corresponding to the target configuration bandwidth.

In the embodiment of the present invention, after the base station configures some parameters (such as transmission parameters and SRS parameter set information) for transmitting the SRS for the terminal, the base station may transmit SRS configuration information to the terminal. Wherein the SRS configuration information may include SRS parameter set information corresponding to each configuration bandwidth of the at least one configuration bandwidth and an identifier of the target configuration bandwidth.

Specifically, the base station may send, in the form of a broadcast message or common control information, the SRS configuration information or SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth to the terminal. That is, the base station may send the SRS configuration information to the terminal through a Broadcast Channel (BCH) or a Control Channel (CCH).

In some embodiments, the identification of the target configuration bandwidth is used to identify the frequency domain resource of the target configuration bandwidth, and the identification of the target configuration bandwidth may include an index of the target configuration bandwidth, such as configuration bandwidth 1, a name of the target configuration bandwidth, a width of the target configuration bandwidth, a starting frequency domain position of the target configuration bandwidth, and so on.

In some embodiments, the SRS configuration information further includes the above-mentioned transmission parameters, such as transmission bandwidth type, transmission period, and multiple access method.

In some embodiments, to implement SRS reporting of the whole configured bandwidth or system bandwidth by each terminal, different SRS symbols may be transmitted in a frequency hopping manner, that is, frequency hopping is performed on the configured bandwidth according to a certain sequence. Fig. 4 is a schematic diagram of SRS hopping between configured bandwidths according to an embodiment of the present invention. Fig. 4 shows 4 SRS hopping transmission modes, where a white grid, a gray grid, a vertical line grid, and a horizontal line grid represent schematic diagrams of SRS hopping transmission performed in the configuration bandwidth 1, the configuration bandwidth 2, the configuration bandwidth 3, and the configuration bandwidth N, respectively. Here, SRS symbol 1, SRS symbol 2, and SRS symbol N may be understood as different time points in the time domain concept.

In some embodiments, the SRS is used for estimating frequency domain information of an uplink channel and performing frequency selective scheduling, and may also be used for estimating an uplink channel and performing downlink beamforming. In the embodiment of the present invention, the SRS may be used to perform bandwidth (or channel) detection and evaluation on the target configuration bandwidth accordingly.

In some embodiments, the base station may further configure the terminal with a manner in which the terminal performs frequency-hopping SRS transmission between different configured bandwidths. For example, after the base station determines the target configuration bandwidth occupied by sending the SRS (that is, determines the SRS parameter set information correspondingly adopted by sending the SRS), the base station may repartition the system bandwidth except the target configuration bandwidth according to the frequency bandwidth of the target configuration bandwidth to obtain at least one hopping bandwidth. The base station may further carry the identifier of the at least one hopping bandwidth in the SRS configuration information and send the SRS configuration information to the terminal. The SRS configuration information may also be used to instruct the terminal to perform SRS hopping transmission among the at least one hopping bandwidth according to the sequence of the identifier of the at least one hopping bandwidth and a manner in which the target configuration bandwidth corresponds to SRS transmission. The identifier of the at least one frequency hopping bandwidth may be ordered or out-of-order and carried in the SRS configuration information.

In some embodiments, the at least one frequency hopping bandwidth is obtained by the base station by repartitioning the system bandwidth according to the frequency bandwidth of the target configuration bandwidth. That is, after the base station determines a target configuration bandwidth occupied by sending the SRS to the terminal (i.e., determines a SRS sending manner corresponding to the target configuration bandwidth), the base station may equally divide the system bandwidth according to a frequency bandwidth of the target configuration bandwidth to obtain at least one hopping bandwidth.

For example, assume that the base station divides a 100MHz system bandwidth into three configuration bandwidths with frequency bandwidths of 20MHz, 40MHz, and 40MHz respectively according to KPIs corresponding to different service data, and the subcarrier intervals respectively configured for the three configuration bandwidths are 15KHz, 30KHz, and 60 KHz. The base station configures the user terminal A with a configuration bandwidth 1 occupying 20MHz to transmit the SRS with full bandwidth. Since the base station wants the terminals to transmit SRS in the system bandwidth to perform full-band channel detection on the system bandwidth, the base station may divide the system bandwidth 100MHz into equal parts again according to the frequency bandwidth 20MHz according to the frequency bandwidth of the configured bandwidth 1(20MHz), so as to obtain 5 hopping bandwidths, which are respectively the hopping bandwidths 1 to 5. Further, the base station may also configure, for the user equipment a, an order for performing frequency hopping transmission SRS in each frequency hopping bandwidth, for example, sequentially hopping to frequency hopping bandwidth 1 and frequency hopping bandwidth 2 … frequency hopping bandwidth 5, or out-of-order hopping to frequency hopping bandwidth 1, frequency hopping bandwidth 3, frequency hopping bandwidth 4 … frequency hopping bandwidth 5, frequency hopping bandwidth 2, and the like.

It should be noted that the target configuration bandwidth is a bandwidth occupied by the terminal for first sending the SRS, and then the SRS is sent on the at least one hopping bandwidth according to the sequence of the identifier of the at least one hopping bandwidth and the SRS sending mode (such as subcarrier interval and symbol length) corresponding to the target configuration bandwidth.

In some embodiments, the base station may also configure the terminal with the manner in which the terminal performs frequency hopping SRS transmission within the same configuration bandwidth. For example, after the base station determines the target configuration bandwidth occupied by sending the SRS (that is, determines the SRS parameter set information correspondingly adopted by sending the SRS), the base station may configure, according to the number of terminals currently performing service data transmission within the target configuration bandwidth, a manner in which the terminals perform frequency hopping SRS sending within the same configuration bandwidth. For example, 5 ues occupy the configured bandwidth 1 in the symbol N of each subframe and need to transmit SRS, and at this time, the configured frequency band 1 may be at least equally divided into 5 parts, where it is assumed that 5 parts are equally divided to obtain 5 hopping sub-bandwidths, which are respectively the hopping sub-bandwidths 1 to 5. If the channel detection of the entire configured bandwidth 1 is to be completed, the base station needs to configure the frequency hopping transmission mode of the SRS in the configured bandwidth 1 for the 5 ues as follows: the user terminal performs the frequency hopping transmission of the SRS in the configured bandwidth 1 according to the frequency hopping sequence (such as the frequency hopping sub-bandwidths 1 to 5) in the set bandwidth and the SRS transmission method corresponding to the configured bandwidth 1. Different user terminals occupy different frequency hopping sub-bandwidths on the same sub-frame symbol N to transmit the SRS, so that after each user terminal transmits the SRS in the 5 frequency hopping sub-bandwidths in a frequency hopping manner, the channel detection of the configuration bandwidth 1 can be completed.

In some embodiments, the target configuration bandwidth may include at least one frequency hopping sub-bandwidth, and the base station may send, to the terminal, the SRS configuration information carrying an identifier of the at least one frequency hopping sub-bandwidth, so as to instruct the terminal to sequentially send the SRS to the base station according to an order of the identifiers of the at least one frequency hopping sub-bandwidth and a SRS sending manner corresponding to the target configuration bandwidth. The sequence of the at least one identifier of the frequency hopping sub-bandwidth may be sequential or out of order, which is not limited herein.

In some embodiments, the frequency hopping bandwidth may also include at least one frequency hopping sub-bandwidth, and the base station may send, to the terminal, the SRS configuration information carrying an identifier of the at least one frequency hopping sub-bandwidth, so as to instruct the terminal to sequentially send, to the base station, the SRS in the frequency hopping bandwidth according to an order of the identifier of the at least one frequency hopping sub-bandwidth and a SRS sending manner corresponding to the target configuration bandwidth. The sequence of the at least one identifier of the frequency hopping sub-bandwidth may be sequential or out of order, which is not limited herein.

That is, the base station may configure SRS hopping transmission within the target configuration bandwidth for the terminal, or may configure SRS hopping transmission within the hopping bandwidth for the terminal.

Step S104, the terminal receives SRS configuration information sent by the base station.

Step S105, the terminal sends the SRS to the base station on the target configuration bandwidth according to the SRS sending mode corresponding to the target configuration bandwidth.

In an embodiment of the present invention, the terminal receives the SRS configuration information, where the SRS configuration information may include SRS parameter set information corresponding to each configuration bandwidth of the at least one configuration bandwidth and an identifier of a target configuration bandwidth corresponding to SRS transmission from the terminal. Then, the terminal may determine, according to SRS parameter set information corresponding to each configuration bandwidth of the at least one configuration bandwidth and an identifier of the target configuration bandwidth, target SRS parameter set information corresponding to the target configuration bandwidth, where the target SRS parameter set information may include a subcarrier interval and a symbol length. Finally, the terminal may transmit SRS to the base station over the target configuration bandwidth according to a manner corresponding to the target SRS parameter set information (e.g., parameters such as subcarrier spacing of 15KHz, symbol length of 66.67us, etc.).

In another embodiment of the present invention, the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to the SRS transmitted by the terminal; after the sending the SRS to the base station over the target configuration bandwidth, the method further includes: and the terminal sequentially transmits the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth, wherein the frequency hopping bandwidth and the target configuration bandwidth have the same frequency bandwidth.

Specifically, after the terminal transmits the SRS over the target configuration bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth, the terminal may continue to transmit the SRS to the base station over the at least one hopping bandwidth in sequence according to the sequence of the identifiers of the at least one hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth. For details, reference may be made to the detailed description in the foregoing embodiments, which are not repeated herein.

To a certain extent, this is understood to mean: and the terminal transmits the SRS on the at least one frequency hopping bandwidth (namely the target configuration bandwidth) according to the sequence (the set frequency hopping sequence) of the identifier of the at least one frequency hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth. That is, the target configuration bandwidth is subjected to position shifting according to the sequence of the at least one identifier of the frequency hopping bandwidth (setting a frequency hopping sequence), so as to implement frequency hopping transmission of the SRS.

In some embodiments, the at least one frequency hopping bandwidth is obtained by the base station by repartitioning the system bandwidth according to a frequency bandwidth of the target configuration bandwidth, and the frequency hopping bandwidth has a frequency bandwidth same as the target configuration bandwidth. For details, reference may be made to the description of the foregoing embodiments, which are not repeated herein.

For example, assuming that the system bandwidth supported by the base station is 100MHZ, the base station divides the system bandwidth into 5 configuration bandwidths according to the actual situation of the current cell, where the configuration bandwidths are respectively configuration bandwidth 1 to configuration bandwidth 5, and each configuration bandwidth occupies 20 MHZ. Assume that there are two ues, terminal 1 and terminal 2, in the serving cell of the current base station. Wherein, the terminal 1 occupies 60MHz band resource of the system bandwidth for related service transmission, and the terminal 2 occupies 20MHz band resource of the system bandwidth for related service transmission.

Currently, configuring, by a base station, an SRS transmission mode for a terminal 2 includes: the full-bandwidth SRS is transmitted over the configured bandwidth 5. Because the terminal 2 only uses the frequency domain resource of 20MHz, the terminal can realize the channel estimation of the full frequency band of 20MHz by using the SRS sending mode, and the frequency hopping sending of the SRS is not needed.

The base station configuring the SRS transmission mode for the terminal 1 includes: the full-bandwidth SRS transmission is performed with an SRS transmission period of 5ms (milliseconds) occupying the configuration bandwidth 1. Since the terminal 1 needs to perform channel detection of the full frequency band on the frequency domain resource 60MHz used by the terminal, the base station needs to configure a frequency hopping transmission method of the SRS for the terminal. Specifically, the base station divides the frequency band resource of 60MHz into frequency hopping bandwidths 1-3, the frequency bandwidth of each frequency hopping bandwidth is 20MHz, and the SRS frequency hopping transmission mode configured by the base station for the terminal may be: and carrying out frequency hopping transmission of the SRS on the corresponding target frequency hopping bandwidth according to the set frequency hopping sequence (such as the frequency hopping bandwidths 1 to 3). The hopping sequence of the terminal 1 in the hopping bandwidths 1 to 3 may be varied, and may be determined according to the actual base station configuration, for example, the channel estimation of the full frequency band of 60MHZ may be performed according to the sequence of the hopping bandwidth 1, the hopping bandwidth 2, and the hopping bandwidth 3, or according to the sequence of the hopping bandwidth 2, the hopping bandwidth 3, and the hopping bandwidth 1.

In some embodiments, the target configuration bandwidth and the hopping bandwidth may include at least one hopping sub-bandwidth, and the SRS configuration information further includes an identification of the at least one hopping sub-bandwidth; the terminal sequentially transmits the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth, and the method includes: and the terminal sequentially transmits the SRS to the base station according to the sequence of the identification of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

That is, the terminal may sequentially transmit the SRS to the base station within the frequency hopping bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth and the sequence of the identifier of the at least one frequency hopping sub-bandwidth. In some embodiments, the terminal may perform SRS hopping transmission in the same manner in at least one subsequent hopping bandwidth according to the SRS hopping transmission mode in the target configuration bandwidth.

It should be noted that, according to the SRS transmission mode configured by the base station for the terminal, the terminal can implement both the SRS hopping transmission within the configured bandwidth and the SRS hopping transmission between the configured bandwidths.

To assist the detailed understanding of the above embodiments, the following detailed description is made by way of two examples. If the system bandwidth (or cell bandwidth) supported by the base station is 100MHz, the base station statically divides the system bandwidth into 5 configuration bandwidths according to KPI indicators corresponding to different service data, as shown in fig. 5. From the figure, 5 configuration bandwidths are respectively: configuration bandwidth 1, configuration bandwidth 2, configuration bandwidth 3, configuration bandwidth 4 and configuration bandwidth 5, wherein each configuration bandwidth occupies a frequency bandwidth of 20 MHZ. According to KPIs corresponding to service data supported by each terminal, SRS parameter set information configured for configuration bandwidths 1 to 3 comprises subcarrier intervals of 15KHz, SRS parameter set information configured for configuration bandwidth 4 comprises subcarrier intervals of 30KHz, and SRS parameter set information configured for configuration bandwidth 5 comprises subcarrier intervals of 60 KHz. The ratio of the symbol lengths in the SRS parameter set information is 4:2:1, as shown in fig. 5. Alternatively, the base station may notify the above configuration (i.e., the SRS parameter set information, the subcarrier spacing and the symbol length of the 5 configuration bandwidths and the corresponding configurations of the 5 configuration bandwidths) to the terminal through the common control information.

The first embodiment is as follows: for the user terminal 1, the base station also configures related transmission parameters for the user terminal, where the transmission parameters are used to determine a method for transmitting the SRS, and each of the transmission parameters includes: the SRS sending period is 5ms, and the configuration bandwidth 1 is occupied on the symbol N of the corresponding data subframe. To complete the SRS channel detection of the whole system, the base station may repartition the system bandwidth according to the frequency bandwidth (20MHz) of the configured bandwidth 1 to obtain 5 hopping bandwidths, which are respectively the hopping bandwidth 1 to the hopping bandwidth 5. The base station also configures the user terminal 1 with corresponding transmission parameters, which may include: and sequentially carrying out SRS frequency hopping transmission of the full bandwidth according to the set frequency hopping sequence from the frequency hopping bandwidth 1 to the frequency hopping bandwidth 5. For the user terminal 2, the configuration of the transmission parameters for determining the SRS transmission mode by the base station includes: the SRS transmission period is 5ms, and the configured bandwidth 4 is occupied by the symbol N of the corresponding data subframe, and the method similarly includes: and sequentially carrying out frequency hopping transmission of the SRS with the half bandwidth according to the set frequency hopping sequence from the frequency hopping bandwidth 4, the frequency hopping bandwidth 5, the frequency hopping bandwidth 1 to the frequency hopping bandwidth 3.

Accordingly, the base station may inform the corresponding user terminals, here user terminal 1 and user terminal 2, of the relevant transmission parameters. After receiving the relevant transmission parameters and the common control information, the user terminal may transmit the SRS to the base station according to the SRS transmission mode corresponding to the relevant transmission parameters and the common control information, which may be specifically shown in fig. 6 and is a terminal SRS transmission diagram provided in the embodiment of the present invention. Here, both user terminal 1 and user terminal 2 are located within the serving cell of the base station.

It should be noted that, assuming that the length of each subframe is 1ms, here, a transmission period of 5ms means that the SRS is transmitted every five subframes, for example, after the SRS is transmitted by the symbol N of the first subframe, the SRS is transmitted by the symbol N of the sixth subframe. In addition, since the symbol length of each configured bandwidth is different, the user terminals in different configured bandwidths will use different numbers of symbols to transmit SRS. For example, the configuration bandwidth 1-3 of the 15kHz subcarrier is used for transmitting the SRS by adopting one symbol. For a ue within the configured bandwidth 4 of 30khz subcarrier, two symbols may be used to transmit SRS in one period, such as two symbols used by ue 2 in fig. 6. Similarly, a user terminal with a configuration bandwidth of 5 of 60khz subcarrier can transmit SRS with 4 symbols.

As can be seen from fig. 6, the gray grid indicates SRS transmission by the user terminal 1, and the vertical line grid indicates SRS transmission by the user terminal 2. It takes 20ms for the ue 1 and the ue 2 to complete the detection of the entire system bandwidth, that is, complete the SRS transmission over the entire system bandwidth. The user terminal 1 completes the frequency hopping transmission of the SRS from the frequency hopping bandwidth 1 to the frequency hopping bandwidth 5 in sequence according to the set frequency hopping sequence in a full bandwidth mode. And performing frequency hopping transmission of the SRS on the frequency hopping bandwidth 1 to the frequency hopping bandwidth 5 according to the corresponding manner of the SRS parameter set information (such as subcarrier spacing of 15KHz) configured corresponding to the configuration bandwidth 1.

The user terminal 2 completes the frequency hopping transmission of the SRS on the frequency hopping bandwidth 4, the frequency hopping bandwidth 5, the frequency hopping bandwidth 1 to the frequency hopping bandwidth 3 in sequence according to the set frequency hopping sequence in a half-bandwidth mode. And performs the frequency hopping transmission of the SRS according to the corresponding manner of the SRS parameter set information (e.g. subcarrier spacing of 30KHz) configured corresponding to the configuration bandwidth 4.

Example two: in addition to configuring the transmission parameters for the user terminal 1 and the user terminal 2 in the first embodiment, the base station further configures the transmission parameters for determining the SRS transmission manner for the user terminal 3, including: the SRS sending period is 5ms, the configured bandwidth 4 is occupied on the symbol N of each data subframe, and the SRS frequency hopping sending of 1/4 bandwidth is also configured according to the set frequency hopping sequence from the frequency hopping bandwidth 4 to the frequency hopping bandwidth 5 from the frequency hopping bandwidth 1 to the frequency hopping bandwidth 3.

As can be seen from the foregoing description, after receiving the transmission parameters and the common control information corresponding to each terminal, each user terminal transmits an SRS to the base station according to the SRS transmission mode corresponding to the transmission parameters and the common control information. Specifically, refer to fig. 7, which is a schematic diagram of another terminal transmitting an SRS according to an embodiment of the present invention. Here, user terminal 1, user terminal 2 and user terminal 3 are all located in the serving cell of the base station.

As can be seen from fig. 7, the gray grid represents SRS transmission by user terminal 1, the vertical grid represents SRS transmission by user terminal 2, and the horizontal grid represents SRS transmission by user terminal 3. The user terminal 1 and the user terminal 2 need to spend 20ms of time to complete the detection of the whole system bandwidth, and the user terminal 3 needs to spend 45ms of time to complete the detection of the whole system bandwidth, that is, to complete the SRS transmission on the whole system bandwidth.

In addition, the user terminal 3 completes the frequency hopping transmission of the SRS over the frequency hopping bandwidth 4, the frequency hopping bandwidth 5, the frequency hopping bandwidth 1 to the frequency hopping bandwidth 3 in sequence according to the set frequency hopping sequence in a manner of 1/4 bandwidth. And performs the frequency hopping transmission of the SRS according to the corresponding manner of the SRS parameter set information (e.g. subcarrier spacing of 30KHz) configured corresponding to the configuration bandwidth 4. For SRS hopping transmission of the user terminal 1 and the user terminal 2, refer to the specific description related to the first embodiment, which is not repeated herein.

It is noted that, as shown in fig. 7, user 2 and user 3 both use two symbols to transmit SRS in the same period, and the difference is only that: user 2 sends 1/2 bandwidth per symbol and user 3 sends 1/4 bandwidth per symbol.

Further, the base station may configure the user terminal 3 with SRS hopping transmission schemes within the same configuration bandwidth. Specifically, referring to fig. 7, when the user terminal 3 transmits the SRS in different configured bandwidths, the frequency band positions occupied by the first five periods are different from the frequency band positions occupied by the last five periods, so that the SRS coverage of the whole bandwidth can be completed.

By implementing the embodiment of the invention, the SRS transmission under different service scenes in 5G can be supported, and the integrity and the flexibility of the SRS transmission are improved.

Based on the same inventive concept, please refer to fig. 8, which shows a schematic structural diagram of an embodiment of a base station and a terminal according to the present invention, and a transmission system 80 of a sounding reference signal SRS formed by the base station and the terminal. As shown in fig. 8, a communication connection, such as a bluetooth or WiFi connection, may exist between the base station 100 and the terminal 200, and data communication between the two may be implemented. The description is developed below.

As shown in fig. 8, the base station 100 may include: a communication unit 101 and a processing unit 102. Wherein:

the processing unit 102 is configured to divide a system bandwidth into at least one configuration bandwidth, and configure, for each configuration bandwidth in the at least one configuration bandwidth, corresponding SRS parameter set information, where the SRS parameter set information is used to determine a SRS transmission mode of a terminal;

the processing unit 102 is further configured to determine a target configuration bandwidth corresponding to SRS transmission by the terminal;

the communication unit 101 is configured to send, to the terminal, SRS configuration information, where the SRS configuration information includes SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of the target configuration bandwidth, and the SRS configuration information is used for the terminal to send, to the base station, the SRS over the target configuration bandwidth according to a SRS sending manner corresponding to the target configuration bandwidth.

In an embodiment of the present invention, the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to the SRS transmitted by the terminal, which is determined by the base station; the SRS configuration information is further used for the terminal to transmit the SRS to the base station in sequence according to the sequence of the identifier of the at least one hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth after transmitting the SRS to the base station over the target configuration bandwidth, where the hopping bandwidth and the target configuration bandwidth have the same bandwidth.

In another embodiment of the present invention, the at least one frequency hopping bandwidth is obtained by the processing unit 102 of the base station repartitioning the system bandwidth according to the frequency bandwidth of the target configuration bandwidth.

In another embodiment of the present invention, the target configuration bandwidth includes at least one frequency hopping sub-bandwidth, and the SRS configuration information further includes an identifier of the at least one frequency hopping sub-bandwidth; the SRS configuration information is used for the terminal to transmit the SRS to the base station on the target configuration bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth, and specifically includes: and the SRS configuration information is used for the terminal to sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

As shown in fig. 8, the terminal 200 may include: a communication unit 201. Wherein:

the communication unit 201 is configured to receive SRS configuration information issued by a base station, where the SRS configuration information includes SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of a target configuration bandwidth corresponding to an SRS transmitted by the terminal, and the SRS parameter set information is used to determine a SRS transmission mode of the terminal;

the communication unit 201 is further configured to transmit the SRS to the base station over the target configuration bandwidth according to the SRS transmission method corresponding to the target configuration bandwidth.

Optionally, the terminal 200 may further include a processing unit 202. The processing unit may be a processor.

In an embodiment of the present invention, the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to the SRS sent by the terminal; after the SRS is transmitted to the base station on the target configuration bandwidth, the communication unit 201 is further configured to: and the terminal sequentially transmits the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth, wherein the frequency hopping bandwidth and the target configuration bandwidth have the same frequency bandwidth.

In another embodiment of the present invention, the at least one frequency hopping bandwidth is obtained by the base station repartitioning the system bandwidth according to the frequency bandwidth of the target configuration bandwidth.

In another embodiment of the present invention, the target configuration bandwidth includes at least one frequency hopping sub-bandwidth, and the SRS configuration information further includes an identifier of the at least one frequency hopping sub-bandwidth; the communication unit 201 is specifically configured to sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

It should be noted that details not mentioned in the embodiment of fig. 8 and specific implementations of each functional unit are please refer to the embodiment of fig. 1, and are not repeated here.

Fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 100 in the present embodiment as shown in the figure may include: one or more processors 801; one or more input devices 802, one or more output devices 803, and memory 804. The processor 801, the input device 802, the output device 803, and the memory 804 described above are connected by a bus 805. The memory 802 is used to store instructions and the processor 801 is used to execute instructions stored by the memory 802. The processor 801 is configured to support the base station 100 to perform relevant steps in the above sounding reference signal SRS transmission method embodiment, for example, steps S101 to S103 in fig. 1, and/or to perform other steps of the technology described herein.

Fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal 200 in the present embodiment as shown in the figure may include: one or more processors 901; one or more input devices 902, one or more output devices 903, and memory 904. The processor 901, the input device 902, the output device 903, and the memory 904 are connected by a bus 905. The memory 902 is used for storing instructions and the processor 901 is used for executing the instructions stored by the memory 902. Wherein, the processor 901 is configured to support the terminal 200 to perform relevant steps in the above sounding reference signal SRS transmission method embodiment, for example, steps S104 to S105 in fig. 1, and/or to perform other steps of the technology described herein.

It should be appreciated that in some embodiments, the Processor 801 may be a Central Processing Unit (CPU), and the Processor may be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The input device 802 may include a touch pad, a fingerprint sensor (for collecting fingerprint information of a user and direction information of the fingerprint), a microphone, etc., and the output device 803 may include a display (LCD, etc.), a speaker, etc.

The memory 804 may include both read-only memory and random access memory, and provides instructions and data to the processor 801. A portion of the memory 804 may also include non-volatile random access memory. For example, the memory 804 may also store device type information.

In a specific implementation, the processor 801, the input device 802, and the output device 803 described in the embodiment of the present invention may execute the implementation described in the embodiment of the method for transmitting a sounding reference signal SRS provided in the embodiment of the present invention, and may also execute the implementation of the terminal described in the embodiment of the present invention, which is not described herein again.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the related devices and the units described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, related devices and methods may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components 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 units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units 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 units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims

1. A method for transmitting Sounding Reference Signals (SRS), the method comprising:

determining a target configuration bandwidth corresponding to SRS sent by the terminal;

and sending SRS configuration information to the terminal, wherein the SRS configuration information comprises SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of the target configuration bandwidth, and the SRS configuration information is used for the terminal to send the SRS to the base station on the target configuration bandwidth according to an SRS sending mode corresponding to the target configuration bandwidth.

2. The method of claim 1, wherein the base station partitions at least one configured bandwidth within a system bandwidth, comprising:

and dividing the system bandwidth into at least one configuration bandwidth according to Key Performance Indicators (KPIs) corresponding to different service data and the number of terminals in the service cell.

3. The method of claim 1, wherein the determining a target configuration bandwidth corresponding to the terminal transmitting the SRS comprises:

determining a target configuration bandwidth corresponding to SRS sent by the terminal according to KPIs corresponding to service data supported by the terminal; or,

and determining a target configuration bandwidth corresponding to the SRS sent by the terminal according to the working frequency band supported by the terminal.

4. The method of claim 1, wherein the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to SRS transmission determined by the base station by the terminal;

the SRS configuration information is further used for the terminal to transmit the SRS to the base station in sequence according to the sequence of the identifier of the at least one hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth after transmitting the SRS to the base station over the target configuration bandwidth, where the hopping bandwidth and the target configuration bandwidth have the same bandwidth.

5. The method of claim 4, wherein the at least one hopping bandwidth is obtained by the base station repartitioning the system bandwidth according to a frequency bandwidth of the target configuration bandwidth.

6. The method according to any of claims 1-5, wherein the target configuration bandwidth comprises at least one frequency hopping sub-bandwidth, and wherein the SRS configuration information further comprises an identification of the at least one frequency hopping sub-bandwidth; the SRS configuration information is used for the terminal to transmit the SRS to the base station on the target configuration bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth, and includes:

and the SRS configuration information is used for the terminal to sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

7. The method of any one of claims 1 to 5, wherein the SRS parameter set information corresponding to each of the at least one configuration bandwidth is transmitted by the base station in a broadcast message or a common control message.

8. The method according to any of claims 1-5, wherein the SRS parameter set information includes subcarrier spacing and symbol length; the bandwidth of the configured bandwidth is a positive integer multiple of the subcarrier spacing.

9. The method according to any of claims 1-5, wherein frequency domain resources occupied by any two of the at least one configuration bandwidth do not overlap.

10. A method for transmitting Sounding Reference Signals (SRS), the method comprising:

11. The method of claim 10, wherein the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth for the terminal to transmit SRS; after the sending the SRS to the base station over the target configuration bandwidth, the method further includes:

and the terminal sequentially transmits the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth, wherein the frequency hopping bandwidth and the target configuration bandwidth have the same frequency bandwidth.

12. The method of claim 11, wherein the at least one hopping bandwidth is obtained by the base station repartitioning the system bandwidth according to a frequency bandwidth of the target configuration bandwidth.

13. The method according to any of claims 10-12, wherein the target configuration bandwidth comprises at least one frequency hopping sub-bandwidth, and wherein the SRS configuration information further comprises an identification of the at least one frequency hopping sub-bandwidth; the terminal sends the SRS to the base station on the target configuration bandwidth according to the SRS sending mode corresponding to the target configuration bandwidth, including:

and the terminal sequentially transmits the SRS to the base station according to the sequence of the identification of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

14. The method according to any of claims 10-12, wherein the terminal acquires the SRS parameter set information through a broadcast message or a common control message.

15. The method according to any of claims 10-12, wherein the SRS parameter set information comprises subcarrier spacing and symbol length; the bandwidth of the configured bandwidth is a positive integer multiple of the subcarrier spacing.

16. The method according to any of claims 10-12, wherein frequency domain resources occupied by any two of the at least one configuration bandwidth do not overlap.

17. A base station, characterized in that the base station comprises a processing unit and a communication unit, wherein:

the processing unit is configured to divide at least one configuration bandwidth within a system bandwidth, and configure corresponding SRS parameter set information for each configuration bandwidth in the at least one configuration bandwidth, where the SRS parameter set information is used to determine a SRS transmission mode of a terminal;

the processing unit is further configured to determine a target configuration bandwidth corresponding to SRS transmission by the terminal;

the communication unit is configured to send, to the terminal, SRS configuration information, where the SRS configuration information includes SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of the target configuration bandwidth, and the SRS configuration information is used for the terminal to send, to the base station, the SRS over the target configuration bandwidth in a manner of sending an SRS corresponding to the target configuration bandwidth.

18. The base station of claim 17,

the processing unit is specifically configured to divide the system bandwidth into at least one configured bandwidth according to key performance indicators KPI corresponding to different service data and the number of terminals in the serving cell.

19. The base station of claim 17,

the processing unit is specifically configured to determine, according to a KPI corresponding to service data supported by the terminal, a target configuration bandwidth corresponding to SRS sent by the terminal; or,

the processing unit is specifically configured to determine, according to a working frequency band supported by the terminal, a target configuration bandwidth corresponding to SRS transmission by the terminal.

20. The base station of claim 17, wherein the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth corresponding to SRS transmission determined by the base station by the terminal; the SRS configuration information is further used for the terminal to transmit the SRS to the base station in sequence according to the sequence of the identifier of the at least one hopping bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth after transmitting the SRS to the base station over the target configuration bandwidth, where the hopping bandwidth and the target configuration bandwidth have the same bandwidth.

21. The base station of claim 20, wherein the at least one frequency hopping bandwidth is obtained by the processing unit repartitioning the system bandwidth according to a frequency bandwidth of the target configuration bandwidth.

22. The base station according to any of claims 17-21, wherein the target configuration bandwidth comprises at least one frequency hopping sub-bandwidth, and wherein the SRS configuration information further comprises an identification of the at least one frequency hopping sub-bandwidth; the SRS configuration information is used for the terminal to transmit the SRS to the base station on the target configuration bandwidth according to the SRS transmission mode corresponding to the target configuration bandwidth, and specifically includes: and the SRS configuration information is used for the terminal to sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

23. The base station according to any of claims 17-21,

the communication unit is further configured to send, to the terminal, SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth in a form of a broadcast message or a common control message.

24. The base station according to any of claims 17-21, wherein the SRS parameter set information comprises subcarrier spacing and symbol length; the bandwidth of the configured bandwidth is a positive integer multiple of the subcarrier spacing.

25. The base station according to any of claims 17-21, wherein frequency domain resources occupied by any two of said at least one configuration bandwidth do not overlap.

26. A terminal, characterized in that the terminal comprises a communication unit, wherein:

the communication unit is configured to receive SRS configuration information issued by a base station, where the SRS configuration information includes SRS parameter set information corresponding to each configuration bandwidth in the at least one configuration bandwidth and an identifier of a target configuration bandwidth corresponding to an SRS transmitted by the terminal, and the SRS parameter set information is used to determine a SRS transmission mode of the terminal;

the communication unit is further configured to transmit the SRS to the base station over the target configuration bandwidth in a manner of transmitting the SRS corresponding to the target configuration bandwidth.

27. The terminal of claim 26, wherein the SRS configuration information further includes an identifier of at least one frequency hopping bandwidth for SRS transmission from the terminal; after the SRS is transmitted to the base station on the target configuration bandwidth,

the communication unit is further configured to sequentially transmit SRS to the base station according to the sequence of the identifier of the at least one hopping bandwidth and a SRS transmission mode corresponding to the target configuration bandwidth, where the hopping bandwidth and the target configuration bandwidth have the same frequency bandwidth.

28. The method of claim 27, wherein the at least one hopping bandwidth is obtained by the base station repartitioning the system bandwidth according to a frequency bandwidth of the target configuration bandwidth.

29. The terminal according to any of claims 26-28, wherein the target configuration bandwidth comprises at least one frequency hopping sub-bandwidth, and wherein the SRS configuration information further comprises an identification of the at least one frequency hopping sub-bandwidth;

the communication unit is specifically configured to sequentially transmit the SRS to the base station according to the sequence of the identifier of the at least one frequency hopping sub-bandwidth and the SRS transmission mode corresponding to the target configuration bandwidth.

30. A terminal according to any of claims 26-28,

the communication unit is specifically configured to acquire the SRS parameter set information through a broadcast message or a common control message.

31. The terminal according to any of claims 26-28, wherein the SRS parameter set information comprises subcarrier spacing and symbol length; the bandwidth of the configured bandwidth is a positive integer multiple of the subcarrier spacing.

32. The terminal according to any of claims 26-28, wherein frequency domain resources occupied by any two of the at least one configuration bandwidth do not overlap.

33. A transmission system of Sounding Reference Signals (SRS), the system comprising a base station and a terminal, wherein:

the base station is a base station according to any of the preceding claims 17-25;

the terminal is a terminal according to any of the preceding claims 26-32.