WO2020221081A1

WO2020221081A1 - Sounding reference signal transmission method and device

Info

Publication number: WO2020221081A1
Application number: PCT/CN2020/086179
Authority: WO
Inventors: 王艺; 扎里非凯文
Original assignee: 华为技术有限公司
Priority date: 2019-04-29
Filing date: 2020-04-22
Publication date: 2020-11-05
Also published as: CN111865524A; CN111865524B

Abstract

The present application provides a sounding reference signal (SRS) transmission method and device. The method comprises: a terminal device receiving first information from a network device, wherein the first information comprises alternation information; and alternately sending SRSs in a frequency domain on the basis of the first information, the SRSs being transmitted in different time units via the same antenna port. The invention can resolve the issue in the prior art in which a side peak can easily be misidentified as a main peak when an antenna port occupies the same resource element (RE) in different time units, thereby improving SRS measurement accuracy and increasing positioning accuracy.

Description

Method and device for transmitting sounding reference signal SRS

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 29, 2019, the application number is 201910354483.8, and the application name is "Method and Apparatus for Transmitting Sounding Reference Signal SRS", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of communications, and more specifically, to a method and device for transmitting a sounding reference signal SRS.

Background technique

Long term evolution (LTE) standardizes the positioning method based on the uplink time difference of arrival (UTDOA), the fifth generation mobile networks (5th generation mobile networks or 5th generation wireless systems, 5G) new air interface (new Radio (NR) also clearly needs to standardize three positioning methods: UTDOA, uplink angle of arrival (UAoA), and multi-cell (Multi-cell) round trip time (RTT).

These three positioning methods all require the terminal device to send a sounding reference signal (SRS), and the network device measures the SRS sent by the terminal device. Since the terminal device and the network device may be out of synchronization, the network device needs to search for the position of the SRS in the time domain when receiving the SRS. Such a search process can be completed through time-domain related operations. For example, the network device generates a sequence of SRS in advance, uses the sequence to slide correlation in the received signal, and captures the correlation peak. Generally speaking, if a network device acquires a correlation peak, it detects SRS, and then can be based on SRS measurements such as Relative Time of Arrival (RTOA), Angle of Arrival (AOA), Transceiving Time Difference (Rx –Tx time difference).

In the current NR SRS configuration method, multiple local peaks appear during the correlation peak detection process, and other side peaks are false alarms. When the base station receives the SRS by sliding correlation, it is easy to identify the side peak as the main peak, which affects the detection of the correlation peak, and then affects the accuracy of the network equipment to detect the SRS, which is not conducive to the improvement of positioning accuracy.

Summary of the invention

In view of this, the present application provides a method and device for transmitting a sounding reference signal SRS, which can improve the accuracy of detecting SRS and help improve positioning accuracy.

In a first aspect, a method for transmitting a sounding reference signal SRS is provided, including: a terminal device receives first information from a network device, the first information includes interleaving information, and the interleaving information is used to determine whether the same antenna port is Information about interleaved resources of SRS transmitted on different time units; determining an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes resources corresponding to SRS signals transmitted on the same antenna port in different time units A pattern interleaved in the frequency domain; sending SRS according to the SRS resource mapping pattern can interleave SRS signals on the same antenna port in different time units, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.

In a possible implementation manner, the interleaving information includes the offset of resource element RE mapping between adjacent time units; the terminal device determines the SRS resource mapping pattern according to the first information, including: The terminal device determines the SRS resource mapping pattern according to the offset of the resource element RE mapping between the adjacent time units. Here, the terminal device may determine the interleaving pattern based on the offset of the resource element RE mapping between adjacent time units sent by the network device to facilitate interleaving transmission.

Optionally, the interleaving information further includes the number of comb teeth and the time domain repetition factor.

In another possible implementation manner, the interleaving information includes a time domain repetition factor and the number of comb teeth; wherein, the terminal device determines the SRS resource mapping pattern according to the first information, including: The time domain repetition factor and the number of comb teeth are used to calculate the RE mapping offset between adjacent time units; the terminal device determines the SRS resource mapping pattern according to the RE mapping offset between adjacent time units . Here, the terminal device may calculate the RE mapping offset of resource elements between adjacent time units based on the time domain repetition factor and the number of comb teeth sent by the network device, so that the interleaving pattern may be determined to facilitate interleaving transmission.

In another possible implementation manner, the first information further includes SRS resource configuration information.

Optionally, the SRS resource configuration information includes the interleaving information. Optionally, the interleaving information includes a positioning indication. Here, the network device can multiplex the function parameters in the SRS resource indication set function to realize the interleaving indication function. Specifically, a positioning function (positioning) can be added to the usage of the SRS resource indication set function, or called a positioning indication, that is, the usage parameter is multiplexed to realize the interleaving indication function. That is to say, the parameter (usage) of the SRS resource indication collection function can be set as the positioning function to realize the interleaving indication.

Optionally, the terminal device determines the SRS resource mapping pattern according to the RE mapping offset between adjacent time units, including:

The terminal device determines the SRS resource mapping pattern according to the following formula:

when

And

And p _i ∈ {1001,1003},

Or when

Does not belong

Time,

among them,

Is the initial cyclic shift in the SRS resource configuration,

The total number of cyclic shifts configured for SRS resources,

Is the number of ports in the SRS resource configuration, p _i =1000+i, p _i is the port number of the SRS resource, i represents the port index,

Is the transmit comb number occupied by port p _i on symbol l′,

The sending comb number configured for the SRS resource, K _TC is the number of comb teeth, O is the offset of the RE mapping between adjacent symbols, l'is the relative index of the SRS symbol, and R is the time domain repetition factor configured for the SRS resource.

Optionally, the O is calculated by the following formula:

among them,

Represents rounding up (ceil).

Or, the O is sent by the network device to the terminal device.

Optionally, in the foregoing various possible implementation manners, the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.

Optionally, the interleaving information includes an interleaving indication, such as a newly added staggering parameter.

Optionally, that the terminal device receives the first information from the network device includes: the terminal device receives the first signaling from the network device, and the first signaling includes the first information. For example, the first signaling may be PDCCH or MAC CE, so as to realize dynamic indication.

Optionally, the terminal device receiving the first information from the network device includes:

The terminal device receives a radio resource control RRC message from the network device, where the RRC message includes the first information.

In a second aspect, a method for transmitting a sounding reference signal SRS is provided, including: a network device determines interleaving information, where the interleaving information is used to determine information about interleaving resources of SRS transmitted on the same antenna port in different time units; The device sends first information, the first information includes the interleaving information, and the first information is used by the terminal device to determine an SRS resource mapping pattern, where the SRS resource mapping pattern includes the same antenna port in different time units The resources corresponding to the SRS signals transmitted on the above are interleaved patterns in the frequency domain, so that the terminal device can interleave the SRS signals of the same antenna port in different time units, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.

In a possible implementation manner, the interleaving information includes the offset of the resource element RE mapping between adjacent time units. Here, the network device provides the terminal device with the resource element RE mapping offset between adjacent time units, so that the terminal device can determine the interleaving based on the resource element RE mapping offset between adjacent time units sent by the network device. Pattern to facilitate interleaved transmission.

Optionally, the offset of the RE mapping between adjacent time units is obtained by the network device from a positioning center.

Optionally, the method further includes: the network device sending the RE mapping offset between the adjacent time units to the adjacent cell network device. In this way, the neighboring cell network device can also obtain the offset of the RE mapping between adjacent time units.

In another possible implementation manner, the interleaving information includes a time domain repetition factor and the number of comb teeth. Here, the network device provides the time domain repetition factor and the number of comb teeth to the terminal device, so that the terminal device can calculate the resource element RE mapping offset between adjacent time units based on the time domain repetition factor and the number of comb teeth sent by the network device, thereby The interleaving pattern can be determined to facilitate interleaving transmission.

Optionally, the sending of the first information by the network device to the terminal device includes: the network device sending the first information to the terminal device through the first signaling. For example, the first signaling may be PDCCH or MAC CE, so as to realize dynamic indication.

Optionally, the sending of the first information by the network device to the terminal device includes: the network device sending a radio resource control RRC message to the terminal device, where the RRC message includes the first information.

In a third aspect, a method for transmitting a sounding reference signal SRS is provided, including: a terminal device receives first indication information from a network device, where the first indication information is used to instruct the terminal device to use the same antenna port when having the same port number SRS signals are sent on different resources of the SRS; according to the first indication information, the same antenna port is used to send SRS signals on different resources with the same SRS port number, and the different resources belong to the same SRS resource set and can be in the same SRS resource set SRS signals are interleaved on different SRS resources with the same port number, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.

Optionally, the terminal device using the same antenna port to send SRS signals on different resources with the same SRS port number according to the first indication information includes: the terminal device according to the first indication information and the SRS resource Spatial relationship information, using the same antenna port to send SRS signals on different resources with the same port number, where the different resources belong to the same SRS resource set, and the different resources have the same spatial relationship information.

Here, if the terminal device receives the first indication information, and the spatial relationship information of each SRS resource in the same SRS resource set is configured to have the same content, the terminal device uses the same antenna or antenna set and has the same port number. SRS signals are sent on different resources. Or, if the terminal device has received the first indication information, and the spatial relationship information of each SRS resource in the same SRS resource set is not configured, the terminal device uses the same antenna or antenna set, and uses the same antenna or antenna set for different resources with the same port number. The SRS signal can be sent on different SRS resources in the same SRS resource set in a staggered manner, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.

Optionally, the first indication information includes a positioning indication, or a common port indication, or a coherent combination indication.

In a fourth aspect, a method for transmitting a sounding reference signal SRS is provided, which includes: a network device sends first indication information to a terminal device, where the first indication information is used to instruct the terminal device to use the same antenna port in the same port number. SRS signals are sent on different resources, and the different resources belong to the same SRS resource set; the network device receives the SRS sent by the terminal device using the same antenna port, and performs multi-symbol joint demodulation on the received SRS. Therefore, network equipment can perform multi-symbol joint demodulation or coherent demodulation for SRS signals that are interleaved on different SRS resources with the same port number in the same SRS resource set, thereby improving the accuracy of detecting SRS and helping Improve positioning accuracy.

Optionally, the method further includes: the network device sends a spatial relationship information configuration to the terminal device, and the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.

In a fifth aspect, a communication device is provided. The communication device includes a module for executing the method in the first aspect or any possible implementation of the first aspect, or for the third aspect or the third aspect. Any possible implementation of the method module.

In a sixth aspect, a communication device is provided. The communication device includes a module for executing the method in the second aspect or any possible implementation of the second aspect, or for executing the fourth aspect or the fourth aspect. The module of the method in any possible implementation of the aspect.

In a seventh aspect, a communication device is provided. The communication device may be the terminal device in the above method design, or may be a chip set in the terminal device. The communication device includes a processor, coupled with a memory, and can be used to execute instructions in the memory to implement the method executed by the terminal device in the first aspect and any one of its possible implementation manners, or to implement the third Aspect and the method executed by the terminal device in any one of its possible implementations. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

When the communication device is a chip set in a terminal device, the communication interface may be an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In an eighth aspect, a communication device is provided. The communication device may be a network device in the design of the above method, or a chip set in the network device. The communication device includes a processor, coupled with a memory, and can be used to execute instructions in the memory to implement the method executed by the network device in the second aspect and any one of its possible implementation manners, or to implement the fourth Aspect and the method executed by the network device in any one of its possible implementations. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

When the communication device is a network device, the communication interface may be a transceiver or an input/output interface.

When the communication device is a chip set in a network device, the communication interface may be an input/output interface.

In a ninth aspect, a program is provided, when the program is executed by a processor, it is used to execute any method in the first aspect or the third aspect and possible implementation manners thereof.

In a tenth aspect, a program is provided, when the program is executed by a processor, it is used to execute any method in the second aspect or the fourth aspect and possible implementation manners thereof.

In an eleventh aspect, a program product is provided. The program product includes program code. When the program code is run by a communication unit, a processing unit or a transceiver, or a processor of a communication device (for example, a terminal device), The communication device is caused to execute any method in the above-mentioned first aspect or third aspect and possible implementation manners thereof.

In a twelfth aspect, a program product is provided, the program product includes: program code, when the program code is run by a communication unit, a processing unit or a transceiver, or a processor of a communication device (for example, a network device), The communication device is caused to execute any method in the foregoing second aspect or fourth aspect and possible implementation manners thereof.

In a thirteenth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores a program that enables a communication device (for example, a terminal device) to execute the first aspect or the third aspect and its possibilities Any one of the implementations.

In a fourteenth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a program, and the program enables a communication device (for example, a network device) to execute the second aspect or the fourth aspect and its possibilities Any one of the implementations.

In a fifteenth aspect, a communication system for transmitting a sounding reference signal SRS is provided, including: a terminal device and a network device, the terminal device is used to implement the first aspect or the third aspect and possible implementations thereof In any method of, the network device is used to execute any method in the above-mentioned second aspect or fourth aspect and possible implementation manners thereof.

Optionally, the communication system may further include other devices that interact or communicate with the terminal device and/or the network device.

Description of the drawings

FIG. 1 is a schematic diagram of the architecture of a mobile communication system applied in an embodiment of the present application;

Fig. 2 is a simulation result diagram of the related detection corresponding to the SRS sent by the prior art;

3 is a schematic interaction diagram of a method for transmitting a sounding reference signal SRS according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an example of applying a resource mapping pattern according to an embodiment of the present application;

FIG. 5 is a schematic diagram of another example of applying the resource mapping pattern of the embodiment of the present application;

FIG. 6 is a schematic diagram of another example of applying the resource mapping pattern of the embodiment of the present application;

FIG. 7 is a schematic interaction diagram of a method for transmitting a sounding reference signal SRS according to another embodiment of the present application;

FIG. 8 is a schematic diagram of an example of applying a resource mapping pattern according to another embodiment of the present application;

FIG. 9 is a schematic diagram of a simulation result of transmitting a sounding reference signal SRS using an embodiment of the present application;

FIG. 10 is a schematic block diagram of an apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of an apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application;

FIG. 12 is a schematic block diagram of another apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram of another apparatus for transmitting a sounding reference signal SRS according to an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below in conjunction with the drawings.

In the embodiments of the present application, "multiple" can be understood as "at least two"; "multiple" can be understood as "at least two".

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access ( wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division Duplex (time division duplex, TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, 5G system or next-generation wireless system, etc.

FIG. 1 is a schematic diagram of the architecture of a mobile communication system applied in an embodiment of the present application. As shown in FIG. 1, the mobile communication system includes a core network device 110, a wireless access network device 120, and at least one terminal device (the terminal device 130 and the terminal device 140 in FIG. 1). The terminal device is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner. The core network device and the wireless access network device can be separate and different physical devices, or they can integrate the functions of the core network device and the logical function of the wireless access network device on the same physical device, or it can be a physical device It integrates the functions of part of the core network equipment and part of the wireless access network equipment. The terminal device can be a fixed location or movable.

Fig. 1 is only a schematic diagram. The communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Fig. 1. The embodiments of the present application do not limit the number of core network equipment, radio access network equipment, and terminal equipment included in the mobile communication system.

Radio access network (RAN) equipment is the access equipment that terminal equipment accesses to the mobile communication system in a wireless manner. It can be a base station NodeB, an evolved NodeB (eNB), and a 5G mobile communication system. One of the next generation NodeB (gNB), the transmission point, the base station in the future mobile communication system or the access node in the wireless fidelity (Wi-Fi) system, the base station in the 5G system or A set of antenna panels (including multiple antenna panels), 5G relay nodes, or network nodes that constitute a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU) etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the radio access network device.

In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). CU implements part of the functions of gNB, and DU implements part of the functions of gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions. The DU is responsible for processing physical layer protocols and real-time services, and realizes the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer. AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer is ultimately carried on the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by DU or DU+AAU. It can be understood that the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.

A terminal device may also be called a terminal, a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and so on. The terminal equipment can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control (industrial control) ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid, and wireless terminals in transportation safety (transportation safety) Terminal, wireless terminal in smart city, wireless terminal in smart home, etc.

Wireless access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites. The embodiments of the present application do not limit the application scenarios of wireless access network equipment and terminal equipment.

The embodiments of the present application may be applicable to downlink signal transmission, may also be applicable to uplink signal transmission, and may also be applicable to device-to-device (D2D) signal transmission. For downlink signal transmission, the sending device is a wireless access network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the sending device is a terminal device, and the corresponding receiving device is a wireless access network device. For D2D signal transmission, the sending device is a terminal device, and the corresponding receiving device is also a terminal device. The embodiment of the present application does not limit the signal transmission direction.

Communication between wireless access network equipment and terminal equipment, as well as between terminal equipment and terminal equipment, can communicate through licensed spectrum, or communicate through unlicensed spectrum, or through licensed spectrum and free spectrum at the same time. Authorize spectrum for communication. Communication between wireless access network equipment and terminal equipment, as well as between terminal equipment and terminal equipment, can communicate through the frequency spectrum below 6 gigahertz (gigahertz, GHz), or through the frequency spectrum above 6G, and can also use below 6G at the same time The frequency spectrum and the frequency spectrum above 6G communicate. The embodiment of the present application does not limit the spectrum resource used between the radio access network device and the terminal device.

The embodiments of this application are mainly applied to 5G NR systems. The embodiments of the present application can also be applied to other communication systems. As long as there is an entity in the communication system that needs to send transmission direction indication information, another entity needs to receive the indication information and determine the transmission direction within a certain period of time according to the indication information.

It should be understood that the communication system in FIG. 1 is only described as an example, and does not limit the protection scope of the embodiments of the present application. The technical solutions of the embodiments of the present application can also be used in other communication systems, as long as the communication system needs to indicate the transmission direction.

In the embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application. For example, the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.

In addition, various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

In the various embodiments of this application, if there is no special description and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be mutually cited. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

To facilitate understanding, the terms or concepts involved in the embodiments of the present application will be explained below.

The time unit (or referred to as a time domain unit) may include other time domain units such as frames, subframes, slots, mini-slots (or mini-slots), symbols and the like. A mini-slot is a time-domain unit whose time-domain length is less than a time slot. The time length of one frame is 10 milliseconds (ms), including 10 subframes, and the time length corresponding to each subframe is 1ms. One slot includes 12 symbols in the case of an extended cyclic prefix and 14 symbols in the case of a normal cyclic prefix. The time domain symbols here may be orthogonal frequency division multiplexing (OFDM) symbols. The number of time-domain symbols included in a mini-slot is less than 14, such as 2 or 4 or 7, and so on. Alternatively, one slot may include 7 time domain symbols, and the number of time domain symbols included in a mini-slot is less than 7, such as 2 or 4, and the specific value is not limited.

The uplink time difference of arrival (UTDOA) is a positioning method based on the uplink time difference of arrival. Specifically, the terminal device sends a sounding reference signal (SRS), the network device receives the sounding reference signal (SRS), and measures the relative time of arrival (relative time of arrival) of the SRS receiving moment with respect to a preset time. time of arrival, RTOA). By subtracting the relative arrival time difference measured by the two network devices, the time difference of arrival (TDOA) from the terminal device to the two network devices can be obtained. Based on the arrival time difference, the distance difference between the terminal device and the two network devices can be obtained, so that it can be determined that the terminal device is on a hyperbola with the positions of the two network devices as the focus. When 3 network devices are involved in positioning, 2 hyperbolas can be drawn, and the intersection (one) of the two hyperbolas is the terminal position.

The uplink angle of arrival (UAoA) is a positioning method based on the uplink angle. Specifically, the terminal device sends an SRS; correspondingly, the network device receives the SRS and measures the SRS angle of arrival, so that it can be determined that the terminal device is on a ray determined by the direction of the angle of arrival. If two network devices are involved in positioning, two rays can be drawn, and the intersection of the two rays is the terminal position.

Multi-cell (Multi-cell) round trip time (RTT) is a positioning method based on RTT. Specifically, the network device sends downlink signals and receives SRS, and the terminal sends SRS and receives downlink signals. The network device and the terminal respectively measure the difference between the sending and receiving time (Rx-Tx time difference), thereby determining the RTT, and further determining that the terminal is on a circle with a radius corresponding to half of the RTT and the network device as the center. When two network devices are involved in positioning, two circles can be drawn, and the focal point (one) of the two circles is the terminal position.

It can be seen from the above description that the above three positioning methods all require SRS participation. The current SRS configuration only supports one SRS resource. Among them, one SRS resource includes at least the number of SRS ports, and the time domain and frequency domain positions corresponding to the SRS resource. If one SRS resource occupies multiple symbols in one time slot, the resource element (RE) positions mapped on each symbol on each port are the same. Regardless of whether frequency hopping is configured or not, in different resource blocks (resource block, RB) (where one RB includes 12 REs), the positions of REs occupied by SRS resources are the same on different symbols. However, the same mapping method of RE positions on different symbols is not conducive to positioning.

The above problems are explained here in conjunction with the simulation results of the example in Fig. 2. Fig. 2 shows a simulation result diagram of the correlation detection corresponding to the SRS sent using the SRS resource mapping pattern in the prior art. Assuming that the positions of REs occupied by SRS resources are the same on different symbols, the terminal equipment transmits SRS signals on the corresponding RE resources of different symbols. In Figure 2, it is assumed that the simulation conditions are set as: fast Fourier transform (FFT) length = 2048, cyclic prefix (CP) length 144, SRS bandwidth 100RB, number of SRS symbols 4, number of SRS comb teeth 4. The simulation result of the correlation peak of SRS in the time domain is shown in Figure 2.

It can be seen from Figure 2 that there are multiple local peaks in the autocorrelation of SRS, among which the central peak is the main peak (ie the highest peak in Figure 2), and the other side peaks are false alarms. When the network device adopts the sliding correlation method to receive SRS, it may identify the side peak as the main peak. This will cause the network equipment to use the SRS corresponding to the side peak to perform positioning, and calculate the corresponding relative arrival time, the difference in receiving and sending time, or the deviation of the arrival angle estimation, etc., which will cause positioning errors and other problems.

Among them, the sliding correlation used by the network equipment can be implemented by the following formula:

Among them, r(n) is the correlation output, y(n) is the received sequence, x(n) is the local sequence, and n is the sampling point number; M is the correlation length, which depends on the sequence length of x(m), where , The value range of m is 0 to M-1; the ^asterisk in the upper right of x ^* indicates conjugate. If y(n)=x(nD), that is, y(n) is the delay of x(n), and D represents the delay of the receiving sequence relative to the sending sequence, then according to the above formula, it can be at r(D) Obtain correlation peaks.

Generally speaking, if y(n) is obtained by the following formula:

That is, y(n) is the signal after x(n) passes through the multipath channel h _n , h _n represents the channel response with a delay of n, and x(n) has ideal autocorrelation characteristics, namely

Then r(n) can be written as r(n)=h _m . δ(n) represents the Kronecker function, which only takes 1 when n=0, and takes 0 when n is other.

It should be understood that the specific explanation related to sliding may refer to the description in the prior art, and for the sake of brevity, it will not be repeated here.

In order to solve the above problems, the embodiments of the present application provide a method for transmitting SRS. A network device sends interleaving information to a terminal device, so that the terminal device transmits SRS signals transmitted on the same antenna port in different time units in a staggered manner in the frequency domain. Eliminate side peaks on the autocorrelation function, thereby improving the accuracy of positioning. Alternatively, the network device may send instruction information to the terminal device to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number, so as to eliminate side peaks on the autocorrelation function, thereby improving positioning accuracy.

Interleaving means that the signals sent by the terminal device or the network device use different frequency domain resources on adjacent units, or the frequency domain resources of the units on the adjacent time domain are offset. Signals include but are not limited to SRS, and time domain units include symbols, mini-slots, time slots, subframes or radio frames, etc. If the time domain unit is a subframe or a radio frame, the signal may occupy part of the symbols in the subframe or radio frame. I won't repeat them below.

FIG. 3 shows a schematic interaction diagram of a method 300 for transmitting a sounding reference signal SRS according to an embodiment of the present application. As shown in FIG. 3, the method 300 includes:

S310: The network device sends first information to the terminal device, where the first information includes interleaving information, and the interleaving information includes information for determining interleaving resources of SRS transmitted on the same antenna port in different time units. Correspondingly, the terminal device receives the first information from the network device.

In the embodiment of the present application, the network device can instruct the terminal device to transmit the SRS signals transmitted on the same antenna port in different time units in a staggered manner in the frequency domain in an explicit or implicit manner. For example, the network equipment can configure corresponding interleaving resources for the terminal equipment, so that the terminal equipment sends SRS signals on the interleaving resources, so as to achieve the purpose of interleaving transmission, or it can also send instructions to the terminal equipment to indicate that the terminal equipment is on the same The SRS signals transmitted by the antenna ports in different time units are transmitted in a staggered manner in the frequency domain.

It should be understood that for the situation where the network device indicates interleaved transmission, the network device may add a positioning function to the parameters of the existing SRS resource indication set function (the positioning function is used to indicate interleaved transmission), or it may be implemented through newly introduced parameters. There is no specific limitation.

In a possible implementation manner, the interleaving information includes: the offset of the RE mapping of adjacent time units. In this implementation manner, the resource interleaving on different time units can be determined by the offset of the RE mapping of adjacent time units. Assuming that one SRS resource is configured, it can be determined that the SRS implements frequency-domain interleaving on different time units through the offset of the RE mapping of adjacent time units. It should be understood that the embodiments of the present application do not limit the number of SRS resource configurations, and may be multiple SRS resources, and each SRS resource uses the same or different offsets of the RE mapping of adjacent time units.

In a possible implementation manner, the interleaving information includes: the number of comb teeth and the time domain repetition factor. Through comb teeth and time domain repetition factor, the terminal device can determine the interleaving of frequency domain resources on multiple time units.

In a possible implementation manner, the interleaving information includes: interleaving indication. The interleaving indication is used to instruct the terminal equipment to alternately send SRS signals transmitted on the same antenna port in different time units in the frequency domain. Through the interleaving indication, the terminal device can interleave the SRS signals transmitted on the same antenna port in different time units in the frequency domain.

In a possible implementation manner, the first information includes SRS resource configuration information, which can be understood as being used to configure SRS resources. The network device can configure multiple SRS resource sets for the terminal device. Optionally, the SRS resource configuration information may include one or more of the following information: port information (for example, the number of ports) corresponding to the SRS resource, cyclic shift information, information about the number of comb teeth, initial cyclic shift, The initial comb number and so on. When the first information includes multiple SRS resource sets, SRS resources in different SRS resource sets are interleaved, including interleaving of resources in the time domain and frequency domain.

Wherein, the SRS resource configuration information may or may not include interleaving information. If the SRS resource configuration information includes interleaving information, the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain. That is to say, the network device can directly instruct the terminal device to alternately transmit the SRS signals transmitted on the same antenna port in different time units in the frequency domain.

In the embodiment of the present application, the network device may reuse the function parameters in the SRS resource indication set function to realize the interleaving indication. Specifically, the parameters (usage) of the SRS resource indication set function include functions: beam management, codebook, non-codebook, antenna switching, and positioning function (positioning) can be added to usage, or called positioning indication, that is, multiplexing The usage parameter realizes the interleaving indication function. That is to say, the parameter (usage) of the SRS resource indication collection function can be set as the positioning function to realize the interleaving indication.

In a possible implementation, the first information includes SRS resource configuration information, and the SRS resource configuration information includes interleaving information. That is to say, when the network device sends the configured SRS resource configuration information to the terminal device, it can add interleaving information in the SRS resource configuration. In this way, the terminal device can determine the interleaving SRS resource mapping pattern based on the interleaving information.

For the case where the SRS resource configuration information includes interleaving information, the interleaving information may include the offset of the RE mapping of adjacent time units. Here, the terminal device may directly obtain the RE mapping offset of the adjacent time unit from the network device, so as to determine the SRS resource mapping pattern subsequently.

Optionally, the interleaving information may also include a time domain repetition factor and the number of comb teeth.

Optionally, the offset of the RE mapping of the adjacent time unit may be obtained by the network device from the positioning center. The positioning center may be a part of the devices or components of the positioning management function (such as a location management function (LMF) and a location management component (LMC).

The network device may be a serving base station of the terminal device. Optionally, the network device may also send the offset of the RE mapping of the adjacent time unit to the adjacent cell network device, so that the adjacent cell network device can obtain the offset of the RE mapping of the adjacent time unit. Shift.

Optionally, the network device may carry the number of comb teeth and the time domain repetition factor in the interleaving information. In this way, the terminal device combines the number of comb teeth, the time domain repetition factor, and the offset of the RE mapping of adjacent time units to obtain the SRS resource mapping pattern.

For the case where the SRS resource configuration information includes interleaving information, the interleaving information includes a time domain repetition factor and the number of comb teeth. Here, the terminal device may obtain the time domain repetition factor and the number of comb teeth from the network device, and then use the time domain repetition factor and the number of comb teeth to calculate the offset of the RE mapping of adjacent time units, so as to determine the SRS resource mapping pattern subsequently.

It should be understood that in the various possible implementation manners described above, even if the network device configures interleaving resources for the terminal device (such as the offset of the RE mapping of adjacent time units, or the time domain repetition factor and the number of comb teeth), the network device The interleaving information can also be used as an interleaving indicator. That is to say, in addition to configuring interleaving resources for the terminal device, the network device may further instruct the terminal device to send SRS signals interlacedly.

In a possible implementation, the first information includes SRS resource configuration information and interleaving information. The interleaving information may be independent of SRS resource configuration information. The interleaving information includes an interleaving indication. Specifically, new positioning parameters can be introduced in the radio resource control (Radio Resource Control, RRC) protocol. For example, a new parameter, such as a staggering parameter, can be introduced into the SRS resource indication collection function to realize the staggering indication function. If the new parameter is configured as true (true) or on (on), the terminal device alternately transmits SRS signals transmitted on the same antenna port in different time units in the frequency domain.

In a possible implementation, the first information may be sent through different messages.

Optionally, the network device sends the first information to the terminal device through an RRC message, that is, the RRC message includes the first information. Here, the network device may send the SRS resource configuration information and the interleaving information to the terminal device through the RRC message.

Or, optionally, the network device may send the interleaving information used as the interleaving indicator to the terminal device through dynamic signaling, such as the first signaling. For example, the first signaling may be physical layer downlink control channel (physical downlink control channel, PDCCH), medium access control layer control element (medium access control control element, MAC CE) and other signaling. Here, the interleaving information can be understood as independent of the SRS resource configuration information. The network device can notify the terminal device to perform interleaving transmission through dynamic signaling, specifically: interleaving the transmission of SRS signals on the same antenna port in different time units in the frequency domain.

Or, optionally, a part of the interleaving information is sent through an RRC message, and another part of the interleaving information is sent through dynamic signaling. For example, the basic configuration of interleaving information, such as interleaving resources (such as the offset of the RE mapping of adjacent time units, or the time domain repetition factor and the number of comb teeth) is configured through RRC, and only the terminal is indicated in the dynamic signaling The device alternately sends SRS signals transmitted on the same antenna port in different time units in the frequency domain. At this time, the dynamic signaling may only include the interleaving indication.

S320: The terminal device determines an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes resource patterns in which SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.

Here, "interleaving" can be understood as "existing offset". The interleaving resource pattern of the SRS signals transmitted on the same antenna port on different time units in the frequency domain can be understood as: REs corresponding to the SRS signals transmitted on the same antenna port on different time units are offset in the frequency domain.

For the case where the interleaving information includes the resource element RE mapping offset between adjacent time units, correspondingly, S320 includes: the terminal device according to the resource element RE mapping offset between adjacent time units , Determine the SRS resource mapping pattern.

That is, the network device may configure the SRS interleaving resource for the terminal device. The specific manifestation is that the SRS resource configuration includes the interleaving information, and the interleaving information includes the offset of the RE mapping of adjacent time units. The terminal device can determine the SRS resource mapping pattern, that is, the SRS interlaced resource, according to the offset of the RE mapping of the adjacent time unit, so as to send the SRS signal on the SRS interlaced resource.

For the interleaving information including the time domain repetition factor and the number of comb teeth, correspondingly, S320 includes: the terminal device calculates the RE mapping offset between adjacent time units according to the time domain repetition factor and the number of comb teeth; The terminal device determines the SRS resource mapping pattern according to the offset of the RE mapping between the adjacent time units.

That is, the network device may send the interleaving information including the time domain repetition factor and the number of comb teeth to the terminal device, instead of directly sending the offset of the RE mapping between adjacent time units. The terminal device uses the time domain repetition factor and the number of comb teeth to calculate the offset of the RE mapping between adjacent time units. For example, the offset of the RE mapping between adjacent time units is: a value obtained by rounding up the ratio of the number of comb teeth to the time domain repetition factor.

In the foregoing various possible implementation manners, the terminal device can determine the SRS resource mapping pattern after obtaining the offset of the RE mapping between adjacent time units.

Specifically, the terminal device may use the following formula to determine the resource mapping of each port in the SRS resource:

when

And

And p _i ∈ {1001,1003},

Or when

Does not belong

Time,

among them,

Is the initial cyclic shift in the SRS resource configuration,

The total number of cyclic shifts configured for SRS resources,

Is the sending comb number occupied by port p _i (on symbol l′),

The sending comb number configured for the SRS resource, K _TC is the number of comb teeth, O is the offset of the RE mapping between adjacent symbols, l'is the relative index of the SRS symbol, and R is the time domain repetition factor configured for the SRS resource. Among them, O is calculated by the following formula:

among them,

Indicates rounding up. Or, O is told by the network device to the terminal device.

For ease of understanding, a 4-symbol single-port SRS resource mapping is taken as an example, and the description will be made in conjunction with the resource mapping patterns in FIGS. 4-6. Here is a unified description. In FIGS. 4 to 6, a 4-symbol single-port SRS resource is mapped to symbol 10, symbol 11, symbol 12, and symbol 13 in a time slot.

Figure 4 is based on

K _TC =2, R=2 as an example, suppose O=1, that is, the RE offset between symbol 10 and symbol 11 is 1;

That is, the symbol 10 occupies comb tooth 0; K _TC =2, that is, the number of comb teeth is 2. Wherein, the time domain repetition factor is 2, which means that the SRS interleaving resources are mapped on two symbols, and the symbol 10 and the symbol 11 occupy the same RB. In FIG. 4, although the mapping positions of symbol 12 and symbol 13 and symbol 10 and symbol 11 in one RB are consistent, this does not constitute a limitation to the embodiment of the present application. In fact, symbol 12 and symbol 13 can be mapped to and through frequency hopping. Symbol 10 is different from symbol 11 on the RB.

Figure 5 is based on

K _TC =4, R=2 as an example, suppose O=2, that is, the RE offset between symbol 10 and symbol 11 is 2;

That is, the symbol 10 occupies comb tooth 1; K _TC =4, that is, the number of comb teeth is 2. Wherein, the time domain repetition factor is 2, which means that the SRS interleaving resources are mapped on two symbols, and the symbol 10 and the symbol 11 occupy the same RB. In Figure 5, the mapping positions of symbol 12 and symbol 13 are consistent with symbol 10 and symbol 11 in one RB, but this does not constitute a limitation to the embodiment of the present application. In fact, symbol 12 and symbol 13 can be mapped to AND symbol through frequency hopping. 10 is on the RB different from the symbol 11.

Figure 6 is based on

K _TC =4, R=4 as an example, suppose O=1, that is, the RE offset between symbol 10 and symbol 11 is 1;

That is, the symbol 10 occupies comb teeth 2; K _TC =4, that is, the number of comb teeth is 4. Wherein, the time domain repetition factor is 4, which means that the SRS interlaced resources are mapped on four symbols, and the symbol 10, the symbol 11, the symbol 12, and the symbol 13 occupy the same RB.

It should be understood that the examples in FIG. 4 to FIG. 6 are only to facilitate those skilled in the art to understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples in FIGS. 4 to 6, and such modifications or changes also fall within the scope of the embodiments of the present application.

S330: The terminal device sends an SRS according to the SRS resource mapping pattern.

The terminal device may, based on the SRS resource mapping pattern determined in the foregoing, alternately transmit the SRS signals transmitted on the same antenna port in different time units in the frequency domain.

Or, for example, for a situation where the staggering parameter is configured, if the staggering parameter is configured to be true or on, the terminal device can staggerly transmit the same antenna in the frequency domain based on the staggering indication SRS signals transmitted by the port in different time units.

For example, for the situation where the usage parameter is reused in the SRS resource configuration information, that is, the usage adds the positioning function, if the usage is set to the positioning function, the terminal device can staggerly transmit the same antenna port in the frequency domain based on the positioning function. SRS signal transmitted on time unit.

Here, the SRS sent by the terminal device may be sent to the serving base station, or may be sent to the neighboring base station, which is not limited.

In this embodiment of the application, by introducing interleaving information, the terminal device can determine the mapping offset of SRS resources in different time units, and can realize that the resources corresponding to the SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain. The pattern configuration. If the SRS resource interleaving mapping pattern is used to transmit the SRS, the side peaks on the autocorrelation function can be eliminated, which helps to improve the accuracy of the relative arrival time, the transmission and reception time difference measurement and the angle of arrival based on SRS measurement.

This application also provides another embodiment, which configures interleaving patterns corresponding to multiple SRS resources included in the same SRS resource set, and transmits SRS signals on different resources with the same port number by using the same antenna port, so as to achieve the elimination of autonomy. The purpose of the side peak on the correlation function helps to improve the accuracy of the relative arrival time based on the SRS measurement, the transmission and reception time difference measurement, and the angle of arrival.

FIG. 7 shows a schematic interaction diagram of a method 700 for transmitting a sounding reference signal SRS according to another embodiment of the present application. As shown in FIG. 7, the method 700 includes:

S710. The network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number. Correspondingly, the terminal device receives the first indication information.

Optionally, the first indication information may specifically be a positioning (position) indication, or a common port (sameport) indication, or a coherent combining indication (coherent combining). For the positioning indication, a new positioning function can be added to the existing parameter usage, that is, the usage parameter is reused to realize the interleaving indication function. A common port (sameport) indication or a coherent combining indication (coherent combining) is a newly introduced parameter.

Specifically, the network device may send SRS resource configuration information to the terminal device. The SRS resource configuration information includes one or more SRS resource sets, and each SRS resource set includes multiple SRS resources. When the network device sends SRS resource configuration information to the terminal device, it can add first indication information to the SRS resource configuration information to indicate whether the SRS signals on different SRS resources with the same port number in the same SRS resource set use the same The antenna port is sent.

S720: According to the first indication information, the terminal device uses the same antenna port to send SRS signals on different resources with the same SRS port number, and the different resources belong to the same SRS resource set.

Specifically, if usage is set to the positioning function, the terminal device uses the same antenna port to send SRS signals on different resources with the same SRS port number; if the sameport indication or coherent combining indication is configured as true (true) or on (on), the terminal device uses the same antenna port to send SRS signals on different resources with the same SRS port number. Therefore, after receiving the first indication information, the terminal device can alternately send SRS signals on different SRS resources with the same port number in the same SRS resource set, thereby improving the accuracy of detecting SRS and helping to improve positioning accuracy.

In order to facilitate understanding, the following description will be made with reference to the example in FIG. 8. As shown in Figure 8, it is assumed that an SRS resource set includes two SRS resources, SRS resource 1 and SRS resource 2, respectively. SRS resource 1 is a 2-port (port 1000 and port 1001, respectively) resource, which is mapped on symbol 10 and symbol 11 in a time slot. The comb structure is 4-comb, in which port 1000 and port 1001 both occupy the comb Tooth 0, which occupies the same RE, is distinguished by sequence cyclic shift.

Similarly, SRS resource 2 is a 2-port (port 1000 and port 1001 respectively) resource, which is mapped on symbol 12 and symbol 13 in a time slot. The comb structure is 4-comb, of which port 1000 and port 1001 Both occupy comb tooth 2, that is, occupy the same RE, and are distinguished by sequence cyclic shift.

If the terminal device receives the first indication information, the terminal device uses the same antenna or antenna assembly to send the SRS signal on the port 1000 of the SRS resource 1 and the port 1000 of the SRS resource 2. Similarly, the terminal device uses the same antenna or antenna set to transmit the SRS signal on the port 1001 of the SRS resource 1 and the port 1001 of the SRS resource 2.

It should be understood that the example in FIG. 8 is only to facilitate those skilled in the art to understand the embodiments of the present application, and is not intended to limit the embodiments of the present application to the specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the example in FIG. 8, and such modifications or changes also fall within the scope of the embodiments of the present application.

Optionally, the terminal device may also combine the spatial relationship information to determine whether to use the same antenna port to send SRS signals on different resources with the same port number. Optionally, the method 700 further includes:

The network device sends a spatial relationship information configuration to the terminal device, and the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources. Correspondingly, the terminal device uses the same antenna port to transmit signals on different resources with the same port number according to the configuration of the first indication information and the spatial relationship information, wherein the different resources belong to the same SRS resource set, and The different resources have the same spatial relationship information.

Wherein, the spatial relationship information may be a downlink signal, and correspondingly, the terminal equipment may use the beam receiving the downlink signal to transmit the SRS. Optionally, the downlink signal may be a synchronization signal physical layer broadcast signal block (synchronization signal/physical broadcast channel block, SS/PBCH block) (also called SSB) or a channel state information reference signal (channel state information reference signal, CSI) -RS).

Alternatively, the spatial relationship information may also be an SRS (such as the first SRS), and correspondingly, the terminal device may use the same beam as the transmission beam corresponding to the first SRS to transmit the SRS.

Specifically, if the terminal device receives the first indication information, and the spatial relationship information of each SRS resource in the same SRS resource set is configured to have the same content, the terminal device uses the same antenna or antenna set and has the same SRS signals are sent on different resources of the port number. Or, if the terminal device has received the first indication information, and the spatial relationship information of each SRS resource in the same SRS resource set is not configured, the terminal device uses the same antenna or antenna set, and uses the same antenna or antenna set for different resources with the same port number. SRS signal is sent on.

For the network device, after the network device sends the first indication information to the terminal device, it can be considered that the terminal device uses the same antenna or antenna set to send SRS signals on different resources with the same port number. Correspondingly, the network device performs multi-symbol joint demodulation on the SRS signal received on the same port number. Among them, multi-symbol joint demodulation can also be called coherent demodulation. The network device may be a serving base station. It should be understood that the "symbol" in the multi-symbol joint demodulation can also be replaced with other time units, that is, the multi-time unit joint demodulation, which is not limited.

Here, if the neighboring cell base station receives the SRS signal that the terminal device uses the same antenna or antenna set and transmits on different resources with the same port number, it can also perform multi-symbol joint demodulation.

FIG. 9 shows a schematic diagram of a simulation result of transmitting a sounding reference signal SRS using an embodiment of the present application. If the method of transmitting the sounding reference signal SRS in the embodiment of the present application (such as the method 300 or the method 700) is adopted, compared with the simulation conditions of FIG. Assuming SRS comb offset=1, other simulation conditions are the same as those in Fig. 2, namely: FFT length=2048, CP length 144, SRS bandwidth 100RB, number of SRS symbols 4, number of SRS comb teeth 4, the simulation result is obtained As shown in Figure 9. It can be seen from FIG. 9 that, compared with FIG. 2, if the interleaving method of the embodiment of the present application is used for transmission, the side peaks are obviously suppressed significantly. In this way, the network device can accurately identify the main peak and use the SRS corresponding to the main peak for positioning, thereby improving the positioning accuracy.

Therefore, the method for transmitting SRS signals in the embodiments of the present application can significantly reduce false peaks, thereby obtaining more reliable SRS detection. Applying the obtained SRS to the three positioning methods mentioned above can improve the accuracy of RTOA, the estimation accuracy of the time difference between sending and receiving, and the estimation accuracy of AoA.

It should be understood that the simulation results in FIG. 9 are only for the convenience of those skilled in the art to understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific scenarios illustrated.

It should also be understood that the various embodiments of the present application can be implemented independently or reasonably combined, and the explanations or descriptions of various terms appearing in the embodiments can be referred to or interpreted in the various embodiments, which is not limited.

It should also be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not be implemented in this application. The implementation process of the example constitutes any limitation.

The method for transmitting a sounding reference signal SRS according to an embodiment of the present application is described in detail above in conjunction with FIG. 1 to FIG. 9. The device for transmitting the sounding reference signal SRS according to the embodiment of the present application will be described below in conjunction with FIG. 10 to FIG. 13. It should be understood that the technical features described in the method embodiments are also applicable to the following device embodiments.

FIG. 10 shows a schematic block diagram of an apparatus 1000 for transmitting a sounding reference signal SRS according to an embodiment of the present application. The apparatus 1000 is configured to execute the method executed by the terminal device in the foregoing method embodiment. Optionally, the specific form of the apparatus 1000 may be a terminal device or a chip in a terminal device. The embodiments of this application do not limit this. The device 1000 includes:

The transceiver module 1010 is configured to receive first information from a network device, where the first information includes interleaving information, and the interleaving information is information used to determine interleaving resources of SRS transmitted on the same antenna port in different time units;

The processing module 1020 is configured to determine an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain ；

The transceiver module 1010 is further configured to send SRS according to the SRS resource mapping pattern.

In a possible implementation manner, the interleaving information includes the offset of resource element RE mapping between adjacent time units; the processing module 1020 is configured to determine the SRS resource mapping pattern according to the first information, specifically It includes: determining the SRS resource mapping pattern according to the resource element RE mapping offset between the adjacent time units. Optionally, the interleaving information further includes the number of comb teeth and the time domain repetition factor.

In a possible implementation manner, the interleaving information includes a time domain repetition factor and the number of comb teeth; wherein, the processing module 1020 is configured to determine an SRS resource mapping pattern according to the first information, which specifically includes: The time domain repetition factor and the number of comb teeth are used to calculate the offset of RE mapping between adjacent time units; and the SRS resource mapping pattern is determined according to the offset of RE mapping between adjacent time units.

In a possible implementation manner, the first information further includes SRS resource configuration information.

Optionally, the SRS resource configuration information includes the interleaving information.

In a possible implementation, the processing module 1020 is configured to determine the SRS resource mapping pattern according to the RE mapping offset between adjacent time units, which specifically includes:

Determine the SRS resource mapping pattern according to the following formula:

when

And

And p _i ∈ {1001,1003},

Or when

Does not belong

Time,

among them,

Is the initial cyclic shift in the SRS resource configuration,

The total number of cyclic shifts configured for SRS resources,

Is the transmit comb number occupied by port p _i on symbol l′,

Optionally, the O is calculated by the following formula:

among them,

Represents rounding up (ceil).

Or, the O is sent by the network device to the terminal device.

Optionally, the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.

Optionally, the interleaving information includes an interleaving indication.

Optionally, the interleaving information includes a positioning indication.

In a possible implementation, the transceiving module 1010 is configured to receive first information from a network device, which specifically includes: receiving first signaling from the network device, where the first signaling includes the first information .

In a possible implementation, the transceiver module 1010 is configured to receive first information from a network device, including: receiving a radio resource control RRC message from the network device, where the RRC message includes the first information .

It should be understood that the apparatus 1000 for transmitting sounding reference signal SRS according to the embodiment of the present application may correspond to the method of the terminal device in the foregoing method embodiment, for example, the method in FIG. 3, and the foregoing and other management of each module in the apparatus 1000 The operations and/or functions are respectively to implement the corresponding steps of the terminal device method in the foregoing method embodiment, and therefore can also achieve the beneficial effects in the foregoing method embodiment. For brevity, details are not repeated here.

Alternatively, the device 1000 is further configured to execute another embodiment of the present application, which specifically includes:

The transceiver module 1010 is configured to receive first indication information from a network device, where the first indication information is used to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number;

The transceiver module 1010 is further configured to use the same antenna port to transmit SRS signals on different resources with the same SRS port number according to the first indication information, and the different resources belong to the same SRS resource set.

Optionally, the transceiver module 1010 is further configured to receive the spatial relationship information configuration sent by the network device, where the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.

In a possible implementation, the transceiver module 1010 is configured to use the same antenna port to send SRS signals on different resources with the same SRS port number according to the first indication information, which specifically includes:

According to the first indication information and the spatial relationship information of the SRS resources, the same antenna port is used to transmit signals on different resources with the same port number, where the different resources belong to the same SRS resource set, and the different resources have The same spatial relationship information.

It should be understood that the apparatus 1000 for transmitting sounding reference signal SRS according to the embodiment of the present application may correspond to the method of the terminal device in the foregoing method embodiment, for example, the method in FIG. 7, and the foregoing and other management of each module in the apparatus 1000 The operations and/or functions are respectively to implement the corresponding steps of the terminal device method in the foregoing method embodiment, and therefore can also achieve the beneficial effects in the foregoing method embodiment. For brevity, details are not repeated here.

It should also be understood that each module in the device 1000 can be implemented in the form of software and/or hardware, which is not specifically limited. In other words, the device 1000 is presented in the form of functional modules. The "module" here can refer to application specific integrated circuits (ASICs), circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the above functions Device. Optionally, in a simple embodiment, those skilled in the art can imagine that the device 1000 may adopt the form shown in FIG. 11. The processing module 1020 may be implemented by the processor 1101 shown in FIG. 11. The transceiver module 1010 may be implemented by the transceiver 1103 shown in FIG. 11. Specifically, the processor is implemented by executing a computer program stored in the memory. Optionally, when the device 1000 is a chip, the function and/or implementation process of the transceiver module 1010 may also be implemented through pins or circuits. Optionally, the memory is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the computer device, as shown in FIG. 11 1102.

In terms of hardware implementation, the foregoing transceiver module 1010 may be a transceiver, and the transceiver (indicated by the transceiver module 1010 in FIG. 10) forms a communication interface in the communication unit. It should be understood that the communication interface may be a software or hardware interface. The communication interface may be a communication interface including wireless transmission and reception, or an interface for a digital signal input after processing the received wireless signal by other processing circuits, or a software or hardware interface for communicating with other modules.

FIG. 11 shows a schematic structural diagram of an apparatus 1100 for transmitting a sounding reference signal SRS according to an embodiment of the present application. As shown in FIG. 11, the apparatus 1100 includes a processor 1101, and the processor 1101 is configured to control and manage the actions of the terminal device.

In a possible implementation manner, the processor 1101 is configured to call an interface to perform the following actions: receive first information from a network device, the first information includes interleaving information, and the interleaving information is used to determine the same antenna Information about the interleaved resources of the SRS transmitted by the port in different time units; the processor 1101 is further configured to determine an SRS resource mapping pattern according to the first information, wherein the SRS resource mapping pattern includes the same antenna port in different The resource corresponding to the SRS signal transmitted in the time unit is staggered in the frequency domain; the processor 1101 is configured to call an interface to perform the following actions: send the SRS according to the SRS resource mapping pattern.

Or, in another possible implementation,

It should be understood that the processor 1101 may call an interface to perform the above-mentioned transceiving action, where the called interface may be a logical interface or a physical interface, which is not limited. Optionally, the physical interface can be implemented by a transceiver. Optionally, the device 1100 further includes a transceiver 1103.

Optionally, the device 1100 further includes a memory 1102, and the memory 1102 can store the program codes in the foregoing method embodiments, so that the processor 1101 can call them. The memory 1102 may be coupled with the processor 1101 or not.

Specifically, if the device 1100 includes the processor 1101, the memory 1102, and the transceiver 1103, the processor 1101, the memory 1102, and the transceiver 1103 communicate with each other through internal connection paths, and transfer control and/or data signals. In a possible design, the processor 1101, the memory 1102, and the transceiver 1103 may be implemented by chips. The processor 1101, the memory 1102, and the transceiver 1103 may be implemented on the same chip or may be implemented on different chips. Or any combination of two functions can be implemented in one chip. The memory 1102 may store program codes, and the processor 1101 calls the program codes stored in the memory 1102 to implement corresponding functions of the apparatus 1100. It should be understood that the apparatus 1100 may also be used to perform other steps and/or operations on the terminal device side in the foregoing embodiment, and for the sake of brevity, details are not described herein.

It should be understood that the apparatus 1100 may also be used to perform other steps and/or operations on the terminal device side in the foregoing embodiment, and for the sake of brevity, details are not described herein.

FIG. 12 shows a schematic block diagram of an apparatus 1200 for transmitting a sounding reference signal SRS according to an embodiment of the present application. The apparatus 1200 is used to execute the method executed by the network device in the foregoing method embodiment. Optionally, the specific form of the apparatus 1200 may be a network device or a chip in a network device. The embodiments of this application do not limit this. The device 1200 includes:

The processing module 1210 is configured to determine interleaving information, where the interleaving information is used to determine information about interleaving resources of SRS transmitted on the same antenna port in different time units;

The transceiver module 1220 is configured to send first information to a terminal device, where the first information includes the interleaving information, and the first information is used by the terminal device to determine an SRS resource mapping pattern, wherein the SRS resource mapping pattern It includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.

In a possible implementation manner, the interleaving information includes the offset of the resource element RE mapping between adjacent time units.

In a possible implementation manner, the interleaving information includes a time domain repetition factor and the number of comb teeth.

Optionally, the offset of the RE mapping between adjacent time units is obtained by the device from a positioning center.

In a possible implementation manner, the transceiving module 1220 is further configured to send the offset of the RE mapping between the adjacent time units to the neighboring cell network device.

In a possible implementation manner, the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.

In a possible implementation manner, the transceiver module 1220 is configured to send the first information to the terminal device, which specifically includes: sending the first information to the terminal device through first signaling.

In a possible implementation manner, the transceiver module 1220 is configured to send the first information to the terminal device, which specifically includes: sending a radio resource control RRC message to the terminal device, where the RRC message includes the first information.

It should be understood that the apparatus 1200 for transmitting the sounding reference signal SRS according to the embodiment of the present application may correspond to the method of the network device in the foregoing method embodiment, for example, the method in the method in FIG. 3, and the foregoing description of each module in the apparatus 1200 The other management operations and/or functions are used to implement the corresponding steps of the network device method in the foregoing method embodiment, and therefore, the beneficial effects in the foregoing method embodiment can also be achieved. For brevity, details are not described here.

Alternatively, the apparatus 1200 may also execute another embodiment of the present application, which specifically includes:

The transceiver module 1220 is configured to send first indication information to a terminal device, where the first indication information is used to instruct the terminal device to use the same antenna port to send SRS signals on different resources with the same port number, and the different resources belong to the same SRS Resource collection

The transceiver module 1220 is further configured to receive the SRS sent by the terminal device using the same antenna port, and perform multi-symbol joint demodulation on the received SRS.

In a possible implementation, the transceiver module 1220 is further configured to send a spatial relationship information configuration to the terminal device, where the spatial relationship information configuration includes the same spatial relationship information configured for different SRS resources.

Optionally, the first indication information is a positioning indication, or a common port indication, or a coherent combination indication.

It should be understood that the apparatus 1200 for transmitting sounding reference signal SRS according to the embodiment of the present application may correspond to the method of the network device in the foregoing method embodiment, for example, the method in FIG. 7, and the foregoing and other management of each module in the apparatus 1200 The operations and/or functions are to implement the corresponding steps of the method of the network device in the foregoing method embodiment, and therefore can also achieve the beneficial effects in the foregoing method embodiment. For brevity, details are not described here.

It should also be understood that each module in the device 1200 can be implemented in the form of software and/or hardware, which is not specifically limited. In other words, the apparatus 1200 is presented in the form of functional modules. The "module" here may refer to application-specific integrated circuits ASIC, circuits, processors and memories that execute one or more software or firmware programs, integrated logic circuits, and/or other devices that can provide the above-mentioned functions. Optionally, in a simple embodiment, those skilled in the art can imagine that the apparatus 1200 may adopt the form shown in FIG. 13. The processing module 1210 may be implemented by the processor 1301 shown in FIG. 13. The transceiver module 1220 may be implemented by the transceiver 1303 shown in FIG. 13. Specifically, the processor is implemented by executing a computer program stored in the memory. Optionally, when the device 1200 is a chip, the function and/or implementation process of the transceiver module 1220 may also be implemented through pins or circuits. Optionally, the memory is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the computer device, such as the memory shown in FIG. 13 1302.

In terms of hardware implementation, the foregoing transceiver module 1220 may be a transceiver, and the transceiver (indicated by the transceiver module 1220 in FIG. 12) forms a communication interface in the communication unit. It should be understood that the communication interface may be a software or hardware interface. The communication interface may be a communication interface including wireless transmission and reception, or an interface for a digital signal input after processing the received wireless signal by other processing circuits, or a software or hardware interface for communicating with other modules.

FIG. 13 shows a schematic structural diagram of an apparatus 1300 for transmitting a sounding reference signal SRS according to an embodiment of the present application. As shown in FIG. 13, the apparatus 1300 includes a processor 1301, and the processor 1301 is configured to control and manage the actions of the network device.

In a possible implementation, the processor 1301 is used to determine interleaving information, and the interleaving information is used to determine information about the interleaving resources of the SRS transmitted on the same antenna port in different time units; the processor 1301 also It is used to invoke the interface to perform the following receiving and sending actions: sending first information to the terminal device, the first information includes the interleaving information, and the first information is used by the terminal device to determine the SRS resource mapping pattern, wherein the SRS The resource mapping pattern includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain.

In another possible implementation manner, the processor 1301 is configured to call the interface to perform the following transceiving actions: send first instruction information to the terminal device, and the first instruction information is used to instruct the terminal device to use the same antenna port when the SRS signals are sent on different resources with the same port number, and the different resources belong to the same SRS resource set; receiving the SRS sent by the terminal device using the same antenna port, and performing multi-symbol joint demodulation on the received SRS.

It should be understood that the processor 1301 may call an interface to perform the above-mentioned transceiving actions, where the called interface may be a logical interface or a physical interface, which is not limited. Optionally, the physical interface can be implemented by a transceiver. Optionally, the device 1300 further includes a transceiver 1303.

Optionally, the device 1300 further includes a memory 1302, and the memory 1302 may store the program code in the foregoing method embodiment, so that the processor 1301 can call it. The memory 1302 may be coupled with the processor 1301 or not.

Specifically, if the device 1300 includes the processor 1301, the memory 1302, and the transceiver 1303, the processor 1301, the memory 1302, and the transceiver 1303 communicate with each other through internal connection paths, and transfer control and/or data signals. In a possible design, the processor 1301, the memory 1302, and the transceiver 1303 may be implemented by chips. The processor 1301, the memory 1302, and the transceiver 1303 may be implemented on the same chip or may be implemented on different chips. Or any combination of two functions can be implemented in one chip. The memory 1302 may store program codes, and the processor 1301 calls the program codes stored in the memory 1302 to implement corresponding functions of the apparatus 1300. It should be understood that the apparatus 1300 may also be used to perform other steps and/or operations on the network device side in the foregoing embodiment, and for the sake of brevity, details are not described here.

It should be understood that the apparatus 1300 may also be used to perform other steps and/or operations on the network device side in the foregoing embodiment, and for the sake of brevity, details are not described here.

The methods disclosed in the above embodiments of the present application may be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.

The above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit ASIC, a ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or Transistor logic devices, discrete hardware components, can also be system on chip (SoC), can also be central processor unit (CPU), can also be network processor (NP), or It is a digital signal processing circuit (digital signal processor, DSP), it can also be a microcontroller (microcontroller unit, MCU), it can also be a programmable logic device (PLD) or other integrated chips. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should also be understood that the term "and/or" in this text is only an association relationship describing associated objects, indicating that three relationships can exist. For example, A and/or B can mean that A alone exists, and both A and B, there are three cases of B alone. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In this application, similar to the meaning of "item includes one or more of the following: A, B, and C", unless otherwise specified, it usually means that the item can be any of the following: A; B ; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A , C and C; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C. The above is an example of three elements A, B and C to illustrate the optional items of the item. When expressed as "the item includes at least one of the following: A, B,..., and X", it means When there are more elements, then the applicable items of the item can also be obtained according to the aforementioned rules.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read only memory ROM, random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for transmitting sounding reference signal SRS, characterized in that it comprises:

The terminal device receives first information from the network device, where the first information includes interleaving information, and the interleaving information is information used to determine the interleaving resources of the SRS transmitted on the same antenna port in different time units;

The terminal device determines an SRS resource mapping pattern according to the first information, where the SRS resource mapping pattern includes a pattern in which resources corresponding to SRS signals transmitted on the same antenna port in different time units are interleaved in the frequency domain;

The terminal device sends the SRS according to the SRS resource mapping pattern.
The method according to claim 1, wherein the interleaving information includes an offset of resource element RE mapping between adjacent time units;

The terminal device determining the SRS resource mapping pattern according to the first information includes:

The terminal device determines the SRS resource mapping pattern according to the resource element RE mapping offset between the adjacent time units.
The method according to claim 1, wherein the interleaving information includes a time domain repetition factor and the number of comb teeth;

Wherein, the terminal device determining the SRS resource mapping pattern according to the first information includes:

The terminal device calculates the RE mapping offset between adjacent time units according to the time domain repetition factor and the number of comb teeth;

The terminal device determines the SRS resource mapping pattern according to the offset of the RE mapping between the adjacent time units.
The method according to any one of claims 1 to 3, wherein the first information further includes SRS resource configuration information.
The method according to claim 4, wherein the SRS resource configuration information includes the interleaving information.
The method according to claim 2, wherein the interleaving information further includes the number of comb teeth and the time domain repetition factor.
The method according to any one of claims 2 to 6, wherein the terminal device determines the SRS resource mapping pattern according to the offset of the RE mapping between the adjacent time units, comprising:

The terminal device determines the SRS resource mapping pattern according to the following formula:

when
And
And p i ∈ {1001,1003},

Or when
Does not belong
Time,

among them,
Is the initial cyclic shift in the SRS resource configuration,
The total number of cyclic shifts configured for SRS resources,
Is the number of ports in the SRS resource configuration, p i =1000+i, p i is the port number of the SRS resource, i represents the port index,
Is the transmit comb number occupied by port p i on symbol l′,
The sending comb number configured for the SRS resource, K TC is the number of comb teeth, O is the offset of the RE mapping between adjacent symbols, l'is the relative index of the SRS symbol, and R is the time domain repetition factor configured for the SRS resource.
The method according to any one of claims 1 to 7, wherein the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.
The method according to claim 8, wherein the interleaving information includes an interleaving indication.
The method according to claim 5, wherein the interleaving information includes a positioning indication.
The method according to any one of claims 1 to 10, wherein the terminal device receiving first information from a network device comprises:

The terminal device receives first signaling from a network device, and the first signaling includes the first information.
The method according to any one of claims 1 to 10, wherein the terminal device receiving first information from a network device comprises:

The terminal device receives a radio resource control RRC message from the network device, where the RRC message includes the first information.
A method for transmitting sounding reference signal SRS, characterized in that it comprises:

The network device determines interleaving information, where the interleaving information is used to determine information about interleaving resources of SRS transmitted on the same antenna port in different time units;

The network device sends first information to a terminal device, the first information includes the interleaving information, and the first information is used by the terminal device to determine an SRS resource mapping pattern, wherein the SRS resource mapping pattern includes the same The resource corresponding to the SRS signal transmitted on the antenna port in different time units is staggered in the frequency domain.
The method according to claim 13, wherein the interleaving information includes an offset of resource element RE mapping between adjacent time units.
The method according to claim 13, wherein the interleaving information includes a time domain repetition factor and the number of comb teeth.
The method according to any one of claims 13 to 15, wherein the first information further includes SRS resource configuration information.
The method according to claim 16, wherein the SRS resource configuration information includes the interleaving information.
The method according to claim 14, wherein the interleaving information further includes the number of comb teeth and the time domain repetition factor.
The method according to claim 14 or 18, wherein the offset of the RE mapping between adjacent time units is obtained by the network device from a positioning center.
The method according to any one of claims 14, 18 and 19, wherein the method further comprises:

The network device sends the RE mapping offset between the adjacent time units to the adjacent cell network device.
The method according to any one of claims 13 to 20, wherein the interleaving information is used to instruct the terminal device to alternately transmit SRS signals transmitted on the same antenna port in different time units in the frequency domain.
The method according to any one of claims 13 to 21, wherein the network device sending the first information to the terminal device comprises:

The network device sends the first information to the terminal device through first signaling.
The method according to any one of claims 13 to 21, wherein the network device sending the first information to the terminal device comprises:

The network device sends a radio resource control RRC message to the terminal device, where the RRC message includes the first information.
A communication system for transmitting sounding reference signal SRS, characterized by comprising: terminal equipment and network equipment, said terminal equipment being used to execute the method according to any one of claims 1 to 12, and said network The device is used to perform the method according to any one of claims 13 to 23.
A device for transmitting a sounding reference signal SRS, wherein the device includes a memory and a processor, the memory stores code and data, the memory is coupled with the processor, and the processor runs the The code in the memory enables the device to execute the method for transmitting a sounding reference signal SRS according to any one of claims 1-12, or to execute the method for transmitting a sounding reference signal SRS according to any one of claims 13-23.
A computer-readable storage medium with instructions stored thereon, wherein the method for transmitting sounding reference signal SRS according to any one of claims 1-12 is executed when the instructions are executed, or the method for transmitting sounding reference signal SRS is executed according to claim 13 -23 The method for transmitting the sounding reference signal SRS described in any one.