Reference signal transmission method and related apparatus

Abstract

Provided are a reference signal transmission method and a related apparatus. The method comprises: receiving configuration information of SRS resources, wherein the SRS resources correspond to three ports, and the configuration information comprises the maximum number nSRS cs,max of CS values, a comb offset formula (I) of a reference port, and the CS value nSRS cs of the reference port, and the reference port is a predefined one among the three ports; and on the basis of the configuration information of the SRS resources, a terminal device determining respective CS values and comb offsets corresponding to the three ports, and then sending the SRS resources corresponding to the three ports to a network device. The present application provides a solution for determining the CS values and the comb offsets corresponding to the ports when the SRS resources correspond to the three ports, so that the terminal device can send the SRS resources corresponding to the three ports to the network device.

Description

A reference signal transmission method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 31, 2023, with application number 202311134240.6 and application name “A reference signal transmission method and related device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to a reference signal transmission method and related devices. Background Art

[0003] In wireless communications, network devices can configure reference signal resources for terminal devices. Accordingly, the terminal devices send reference signals to the network devices based on the reference signal resources. The network devices can obtain uplink channel information based on the received reference signals, and can even use channel reciprocity to obtain downlink channel information.

[0004] Taking the Sounding Reference Signal (SRS) as an example, network equipment can configure SRS resources for terminal devices. One SRS resource can correspond to one or more ports, and the terminal device can use the SRS resources on different ports to send different SRSs. Currently, one SRS resource can correspond to two ports, but a two-port SRS resource may not meet user needs. However, evolving to four ports in the short term is difficult. Therefore, three ports are attracting industry attention as a potential important evolutionary model.

[0005] When one SRS resource corresponds to three ports, how to transmit the SRSs of the three ports is an urgent problem to be solved.

[0006] Summary of the Invention

[0007] The present application provides a reference signal transmission method and related apparatus, so as to be able to transmit SRSs of three ports when one SRS resource corresponds to three ports.

[0008] In the first aspect, the present application provides a method for transmitting a reference signal, which can be executed by a terminal device, or by a component configured in the terminal device (such as a chip, a chip system, etc.), or by a logic module or software that can realize all or part of the functions of the terminal device. The present application does not limit this.

[0009] Exemplarily, the method includes: receiving configuration information of an SRS resource, the SRS resource corresponding to three ports, the configuration information including the maximum number of CS values Comb offset (CO) of the reference port And the cyclic shift (CS) value of the reference port The reference port is a predefined port among the three ports; and SRS resources corresponding to the three ports are sent to the network device.

[0010] The configuration information may be used to indicate the CS values ​​and comb offsets corresponding to the three ports.

[0011] Based on the above technical solution, the terminal device can receive the configuration information of the SRS resource, and determine the CS value and comb offset of each of the three ports corresponding to the SRS resource based on the maximum number of CS values ​​included in the configuration information, the comb offset of the reference port, and the CS value of the reference port. In this way, the terminal device can generate the SRS of the three ports based on the CS values ​​and comb offsets corresponding to the three ports, and then send the SRS resources corresponding to the three ports to the network device.

[0012] On the second aspect, the present application provides a method for transmitting a reference signal, which can be executed by a network device, or by a component configured in the network device (such as a chip, a chip system, etc.), or by a logic module or software that can realize all or part of the functions of the network device. The present application does not limit this.

[0013] Exemplarily, the method includes: sending configuration information of SRS resources to the terminal device, the SRS resources corresponding to three ports, the configuration information including the maximum number of CS values Comb offsets for predefined reference ports And the CS value of the reference port Receive SRS resources corresponding to the above three ports.

[0014] The above configuration information can be used to indicate the CS value and comb offset corresponding to each of the three ports.

[0015] Based on the above technical solution, the network device can send configuration information of the SRS resource to the terminal device to indicate the maximum number of CS values, the comb offset of the reference port, and the CS value of the reference port. In this way, the terminal device can determine the CS value and comb offset corresponding to each of the three ports based on the above configuration information, generate the SRS of the three ports, and then facilitate the terminal device to send the SRS resources corresponding to the above three ports to the network device. Accordingly, the network device can receive the SRS resources corresponding to the above three ports.

[0016] In this application, the comb offset of the reference port can be understood as the reference comb offset, which is used to determine the comb offset values ​​corresponding to the above three ports. K TC The CS value of the reference port can be understood as the reference CS value, which is used to determine the CS values ​​corresponding to the three ports mentioned above. and This can be configured via the high-level parameter "transmissionComb".

[0017] In combination with the first aspect and the second aspect, in some possible implementations, when the frequency domain resources of the SRSs of X ports among the three ports correspond to the same comb tooth offset, the minimum value of the difference between any two CS values ​​among the X CS values ​​corresponding to the X ports is or Wherein, X is an integer less than or equal to 3 and greater than 1.

[0018] Among them, the frequency domain resources of the SRS of the X ports among the above three ports correspond to the same comb tooth offset. It can be understood that the frequency domain resources of the SRS of the X ports among the above three ports are determined by the same comb tooth offset, or in other words, the X ports among the above three ports correspond to the same comb tooth offset.

[0019] One possible situation is that the frequency domain resources of the SRS of two of the three ports correspond to the same comb offset, and the difference in CS values ​​corresponding to the two ports is or

[0020] Another possible situation is that the frequency domain resources of the SRS of the three ports correspond to the same comb offset, and the minimum difference between the CS values ​​corresponding to any two ports of the three ports is or

[0021] In combination with the first aspect and the second aspect, in some possible implementations, the frequency domain resources of the SRS of the first port and the second port among the above three ports correspond to different comb tooth offsets with the frequency domain resources of the SRS of the third port among the above three ports, wherein the reference port is the first port or the second port.

[0022] Among them, the frequency domain resources of the SRS of the first port and the second port among the above three ports correspond to different comb tooth offsets from the frequency domain resources of the SRS of the third port among the above three ports. It can be understood that the comb tooth offsets corresponding to the first port and the second port are different from the comb tooth offsets corresponding to the third port, or in other words, the frequency domain resources of the SRS of the first port and the second port are determined by one comb tooth offset, and the frequency domain resources of the SRS of the third port are determined by another comb tooth offset.

[0023] The following describes in detail the CS values ​​and comb tooth offsets corresponding to the three ports when the comb tooth offsets corresponding to the first port and the second port are different from the comb tooth offset corresponding to the third port.

[0024] Optionally, the difference between the CS value corresponding to the third port and the CS value of the reference port changes as the CS value of the reference port changes.

[0025] If the configured CS value of the reference port changes, the difference between the CS value corresponding to the third port and the CS value of the reference port will also change accordingly. In other words, the difference between the CS value corresponding to the third port and the CS value of the reference port is related to the CS value of the reference port. In this way, the difference between the CS value corresponding to the third port and the CS value of the reference port can be adjusted by configuring different CS values ​​of the reference port, which helps to increase the flexibility of the difference between the CS value corresponding to the third port and the CS value of the reference port.

[0026] Optionally, the CS value corresponding to the third port is related to the CS value of the reference port, or when the CS value of the reference port is different, the difference between the CS value corresponding to the third port and the CS value of the reference port is different. In other words, if the CS value of the configured reference port changes, the CS value corresponding to the third port will also change accordingly.

[0027] A possible design of the CS value corresponding to the third port is: satisfy: in, Follow The changing function value, The value is an integer, and mod means the remainder operation.

[0028] For example, That is, the CS value corresponding to the third port satisfy: m is an integer, and mod represents the remainder operation. It can be seen that if the CS values ​​of the reference ports of different SRS resources are In addition, if the CS values ​​corresponding to the reference ports of different SRS resources are different, then the CS value corresponding to the third port is different. Therefore, the difference corresponding to the third ports of different SRS resources is greater than or equal to 2. In other words, there is an interval between the CS values ​​corresponding to the third ports of different SRS resources. In this way, the CS value of the interval can correspond to the SRS resources of other types of ports (such as four ports, or two ports, etc.), which is beneficial to improving resource utilization. In addition, the interval is beneficial to reducing the possibility of conflict between SRS resources of different types of ports.

[0029] Optionally, the CS value corresponding to the port number pi among the three ports above is Satisfies the following formula:

[0030] in, With port number and Related, mod means remainder operation, the value of pi is 1000, 1001 or 1002, and the port number 1000 is the reference port.

[0031] One possible design is, In other words, the CS value corresponding to the port number pi among the three ports mentioned above is Satisfies the following formula:

[0032] Optionally, when and or 2 o'clock, In other words, the CS value corresponding to the port number pi among the three ports mentioned above is Satisfies the following formula:

[0033] Where mod represents the remainder operation, the value of pi is 1000, 1001, or 1002, and the port number 1000 is the reference port.

[0034] Optionally, the comb offset corresponding to the port number pi among the three ports is Satisfies the following formula: in, Indicates the number of ports is 3, K TC Indicates the comb degree, mod indicates the remainder operation, and the port number 1000 is the reference port.

[0035] In combination with the first aspect and the second aspect, in some possible implementations, the frequency domain resources of the SRS of each of the three ports correspond to the same comb tooth offset.

[0036] The frequency domain resources of the SRS of each of the three ports correspond to the same comb tooth offset. It can be understood that the comb tooth offsets corresponding to each of the three ports are the same, or the frequency domain resources of the SRS of each of the three ports are determined by the same comb tooth offset.

[0037] In this design, the CS value corresponding to the port number pi among the three ports is Satisfies the following formula:

[0038] or,

[0039] Where mod represents the remainder operation, the value of pi is 1000, 1001, or 1002, and the port number 1000 is the reference port.

[0040] In combination with the first aspect and the second aspect, in some possible implementations, the frequency domain resources of the SRS of each of the three ports correspond to three different comb tooth offsets.

[0041] The frequency domain resources of the SRS of each of the three ports correspond to three different comb tooth offsets. It can be understood that the comb tooth offsets corresponding to each of the three ports are different, or in other words, the frequency domain resources of the SRS of each of the three ports are determined by three different comb tooth offsets.

[0042] Exemplarily, the comb tooth offset corresponding to the frequency domain resource of the SRS of each of the three ports, or in other words, the comb tooth offset corresponding to each of the three ports satisfies the following formula:

[0043] or,

[0044] or,

[0045] in, Indicates that the number of ports is 3, mod indicates the remainder operation, the value of pi is 1000, 1001, or 1002, and the port number 1000 is the reference port.

[0046] In combination with the first aspect and the second aspect, in some possible implementations, the number of comb tooth offsets corresponding to the frequency domain resources of the SRSs of the three ports is predefined or indicated by a network device.

[0047] Optionally, when the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is indicated by the network device, the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is related to the value range of the CS value of the reference port.

[0048] In other words, the network device can flexibly indicate the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports of the terminal device based on the value range of the CS value of the reference port, thereby facilitating the terminal device to choose a method to determine the CS value corresponding to each port based on the design of the number of comb tooth offsets.

[0049] In a third aspect, the present application provides a communications device that can implement the method described in the first aspect and any possible implementation of the first aspect, or implement the method described in the second aspect and any possible implementation of the second aspect. The device includes corresponding modules for executing the above methods. The modules included in the device can be implemented in software and / or hardware.

[0050] In a fourth aspect, the present application provides a communication device comprising a processor. The processor is coupled to a memory and can be configured to execute a computer program in the memory to implement the method of the first aspect and any possible implementation of the first aspect, or to implement the method of the second aspect and any possible implementation of the second aspect.

[0051] Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface. The communication interface is configured to receive signals from a communication device other than the apparatus and transmit the signals to the processor, or to transmit signals from the processor to the communication device other than the apparatus. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[0052] Optionally, the device further comprises a memory, the processor being coupled to the memory, wherein the memory is used to store program instructions and data.

[0053] In a fifth aspect, the present application provides a computer-readable storage medium, which stores a computer program or instructions. When the computer program or instructions are executed, it implements the method in the first aspect and any possible implementation of the first aspect, or implements the method in the second aspect and any possible implementation of the second aspect.

[0054] In a sixth aspect, the present application provides a computer program product comprising instructions, which, when executed, implement the method of the first aspect and any possible implementation of the first aspect, or implement the method of the second aspect and any possible implementation of the second aspect.

[0055] In the seventh aspect, the present application provides a chip system, which includes at least one processor for supporting the implementation of the functions involved in the above-mentioned first aspect and any possible implementation method of the first aspect, or for supporting the implementation of the functions involved in the above-mentioned second aspect and any possible implementation method of the second aspect, for example, receiving or processing the data involved in the above-mentioned method, etc.

[0056] In one possible design, the chip system further includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0057] The chip system can be composed of chips, or can include chips and other discrete devices.

[0058] In an eighth aspect, the present application provides a communication system, comprising a terminal device for implementing the method described in the first aspect and any possible implementation of the first aspect, and a network device for implementing the method described in the second aspect and any possible implementation of the second aspect.

[0059] It should be understood that the third to eighth aspects of the present application correspond to the technical solutions of the first and second aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] FIG1 is a schematic diagram of frequency domain resources of SRS;

[0061] FIG2 is a schematic diagram of SRS occupying frequency domain resources provided in an embodiment of the present application;

[0062] FIG3 is a schematic diagram of channel responses corresponding to four ports of SRS resources provided in an embodiment of the present application;

[0063] FIG4 is a schematic flowchart of a reference signal transmission method provided in an embodiment of the present application;

[0064] FIG5 is a schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application;

[0065] FIG6 is another schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application;

[0066] 7 is a schematic diagram of CS values ​​corresponding to each port when SRS resources provided in an embodiment of the present application correspond to different numbers of ports;

[0067] FIG8 is another schematic diagram of CS values ​​corresponding to each port when SRS resources correspond to different numbers of ports provided in an embodiment of the present application;

[0068] FIG9 is another schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application;

[0069] FIG10 is another schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application;

[0070] FIG11 is a schematic diagram of CS values ​​corresponding to SRS resources of different ports provided in an embodiment of the present application;

[0071] FIG12 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0072] FIG13 is another schematic block diagram of a communication device provided in an embodiment of the present application;

[0073] FIG14 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0074] FIG15 is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0075] The technical solution in this application will be described below with reference to the accompanying drawings.

[0076] The technical solutions provided in this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, sidelink communication system, universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA).

[0077] The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system, etc. This application does not limit this.

[0078] The following first introduces the network elements involved in the embodiments of the present application: network devices and terminal devices.

[0079] In the embodiment of the present application, the network device can be any device with wireless transceiver function. The network device includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved Node B, or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It may also be a gNB or a transmission point (TRP or TP) in a 5G (such as NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or it may also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc. The network device may also be a wireless controller in a cloud radio access network (CRAN) scenario.

[0080] In an embodiment of the present application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0081] The terminal device may be a device that provides voice / data connectivity to users, such as a handheld device or vehicle-mounted device with wireless connection function. At present, some examples of terminal devices may include: mobile phones, tablet computers, computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, drones, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). Mobile network, PLMN) terminal equipment, etc.

[0082] Wearable devices, also known as wearable smart devices, are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include those that are fully functional, large in size, and can achieve full or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0083] Furthermore, terminal devices can also be end devices in the Internet of Things (IoT) system. IoT is a crucial component of future information technology development. Its primary technical feature is connecting objects to the Internet through communications technology, thereby enabling intelligent networks that interconnect humans and machines, and objects and things. IoT technology, for example, utilizes narrowband (NB) technology to achieve massive connectivity, deep coverage, and power-saving terminals.

[0084] In addition, terminal devices can also include sensors such as smart printers, train detectors, and gas stations. Their main functions include collecting data (part of the terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0085] It should be understood that this application does not limit the specific forms of network devices and terminal devices.

[0086] Before introducing the method provided in the embodiments of the present application, the following points are explained.

[0087] First, to facilitate a clear description of the technical solutions of the embodiments of this application, in the embodiments of this application, terms such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the first port and the second port are merely used to distinguish between different ports and do not limit their order. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that terms such as "first" and "second" do not necessarily indicate differences.

[0088] Second, in the embodiments described herein, various terms and abbreviations, such as sounding reference signal (SRS), cyclic shift (CS) value, and comb offset (CO), are provided for ease of description and are not intended to limit this application in any way. This application does not exclude the possibility of defining other terms in existing or future protocols that can achieve the same or similar functions.

[0089] Third, the "protocol" involved in the embodiments of the present application may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, which is not limited in this application.

[0090] Fourth, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0091] Fifth, in this application, the offset can be used to represent the degree of offset between two objects, or the distance between two objects. For example, the subcarrier offset can be obtained by subtracting the numbers of two subcarriers.

[0092] Sixth, in this application, indications include direct indications (also called explicit indications) and implicit indications (also called indirect indications). Direct indication of information A refers to including information A; implicit indication of information A refers to indicating information A through the correspondence between information A and information B and direct indication of information B. The correspondence between information A and information B can be predefined, pre-stored, pre-burned, or pre-configured.

[0093] Seventh, in this application, information C is used to determine information D, including situations where information D is determined solely based on information C, as well as situations where information D is determined based on information C and other information. Furthermore, information C can also be used to determine information D indirectly, for example, where information D is determined based on information E, and information E is determined based on information C.

[0094] Eighth, the "sending" and "receiving" in this application indicate the direction of signal transmission. For example, "sending information to a terminal device" can be understood as the destination end of the information being the terminal device, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from a network device" can be understood as the source end of the information being the network device, which can include direct receiving from the network device through the air interface, and also includes indirect receiving from the network device through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0095] In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices; or it can be carried out within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wiring or interface.

[0096] Ninth, in this application, words such as "example," "exemplarily," "for example," or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this application as "example," "exemplarily," "for example," or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "example," "exemplarily," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0097] Tenth, in this application, the meanings of the symbols are as follows:

[0098] The maximum number of CS values ​​can be, for example, 6, 8, 12, etc.

[0099] The CS value of the predefined reference port, where It should be understood that in this application, the CS value of the reference port can be understood as the reference CS value, which is used to determine the CS values ​​corresponding to the three ports mentioned above. The CS value of the reference port is also called the CS parameter of the reference port, or the CS index of the reference port. The actual cyclic shift corresponding to the reference port

[0100] The CS value corresponding to the port with port number pi. It should be understood that in this application, the CS value corresponding to the port with port number pi is It can be understood as a cyclic shift parameter, rather than the actual cyclic shift corresponding to the port. When determining the actual cyclic shift corresponding to the port, it is necessary to determine it based on the cyclic shift parameter. For example, the actual cyclic shift corresponding to the port number pi is The CS value corresponding to the port with port number pi is also called the CS parameter corresponding to the port with port number pi, or the CS index corresponding to the port with port number pi. In other words, in this application, the CS value can be replaced by the CS parameter and the CS index, and the three have the same meaning.

[0101] The number of ports corresponding to the SRS resources. The solution provided in this application is for a scenario where the number of ports corresponding to the SRS resources is 3.

[0102] The comb offset of the predefined reference port, where

[0103] K TC : Comb degree. The value of the comb degree can be, for example, 2, 4, or 8. The comb degree characterizes the frequency domain density of the SRS in the frequency domain subcarrier mapping. The value of the comb degree can be the index difference of adjacent subcarriers mapped by the SRS.

[0104] The comb offset corresponding to the port number pi.

[0105] mod: The remainder operation, representing the remainder after dividing two numerical expressions. For example, the remainder function can be in the form of mod(x, y) or x mod y, representing the remainder after dividing x by y. This application does not limit the format.

[0106] Indicates rounding down. When L is not an integer, represents the largest integer less than L. For example,

[0107] Indicates rounding up. When L is not an integer, represents the smallest integer greater than L. For example, It is understood that in this application, if L is an integer, then or

[0108] Eleventh, in this application, the solution provided by this application is described by taking SRS as an example, but this should not constitute any limitation to this application. The technical solution provided by this application can also be applied to other types of reference signals, such as demodulation reference signal (DMRS), phase tracking reference signal (PTRS), tracking reference signal (TRS), channel state information-reference signal (CSI-RS), etc. In addition, the port numbers involved in this application (such as 1000, 1001, 1002) can also be replaced with other numbers, and this application does not limit this.

[0109] In order to better understand the method provided in the embodiments of the present application, the terms involved in the present application are briefly explained below.

[0110] 1. SRS: An uplink reference signal (SRS) is an uplink reference signal sent by a terminal device to a network device. Upon receiving the SRS, the network device can obtain uplink channel information based on the SRS. It can even leverage channel reciprocity (e.g., in a TDD system) to obtain downlink channel information. After obtaining the downlink channel information corresponding to the terminal device, the network device can perform data transmission resource scheduling or precoding processing based on this downlink channel information.

[0111] 2. Port: It can be understood as a transmitting antenna identified by the receiving end, or a transmitting antenna that can be distinguished in space. The transmitting antenna can be a virtual antenna or a spatial resource. The receiving end can be a network device or a terminal device. Each virtual antenna or spatial resource can correspond to an antenna port, and each virtual antenna can be a weighted combination of multiple physical antennas. In this application, the port can also be called an SRS port or an antenna port. This application does not limit the specific name of the port. The port can carry SRS, and each port corresponds to an SRS. Different ports can be multiplexed by code division, frequency division, time division or space division. Currently, an SRS resource can correspond to one, two or four ports, and each port can be configured with its own time domain, frequency domain, and code domain resources. Under normal circumstances, each port will occupy different time domain, frequency domain, and code domain resources to reduce mutual interference. Each port can correspond to a physical antenna or a virtual antenna of a terminal device, and this application does not limit this.

[0112] 3. CS: For different ports, terminal devices can transmit signals on the same time-frequency resources through code division multiplexing (equivalent to different CSs, i.e., different CS values). One possible implementation is to multiply the SRS sequence in the frequency domain by a phase offset factor (here referred to as CS), which is equivalent to generating a cyclic shift offset in the SRS sequence in the time domain. Since the maximum channel delay is often limited, code division orthogonality can be achieved for different ports. In other words, different ports correspond to different CS values, which act on the SRS sequence, resulting in different SRSs for different ports.

[0113] 4. Comb offset: It can also be called comb offset value, comb value, comb index, etc., and this application does not limit its name. Different comb offsets represent different subcarrier groups or subcarrier positions, and the subcarriers in the subcarrier group are equally spaced. The subcarriers in the subcarrier group can be regarded as the teeth of a comb, and the comb degree refers to the difference in the numbers of every two adjacent subcarriers in the subcarrier group. The position of each subcarrier used to carry SRS in the subcarrier group can be determined based on the comb offset and the comb degree.

[0114] The concept of comb tooth offset will be described in detail below with reference to FIG. 1 .

[0115] Figure 1 is a schematic diagram of SRS frequency domain resources. Figure 1 a), b) and c) respectively show the distribution of SRS frequency domain resources under different combing degrees.

[0116] As shown in a) of Figure 1, the comb tooth degree = 2, and the shaded part indicates the position of the subcarrier represented by each comb tooth when the comb tooth offset is 0, that is, the position of the frequency domain resource of the SRS. Among them, the first subcarrier is numbered 0, the second subcarrier is numbered = 0 + comb tooth degree = 0 + 2 = 2, the third subcarrier is numbered = 2 + comb tooth degree = 2 + 2 = 4, the fourth subcarrier is numbered = 4 + comb tooth degree = 4 + 2 = 6, and so on. The white part indicates the position of each subcarrier when the comb tooth offset is 1. Among them, the first subcarrier is numbered 1, the second subcarrier is numbered = 1 + comb tooth degree = 1 + 2 = 3, the third subcarrier is numbered = 3 + comb tooth degree = 3 + 2 = 5, and so on.

[0117] As shown in b) of Figure 1, the comb tooth degree = 4, and the shaded part indicates the position of the subcarrier represented by each comb tooth when the comb tooth offset is 0, that is, the position of the frequency domain resource of the SRS. Among them, the first subcarrier is numbered 0, the second subcarrier is numbered = 0 + comb tooth degree = 0 + 4 = 4, and the third subcarrier is numbered = 4 + comb tooth degree = 4 + 4 = 8. The white part indicates the position of each subcarrier when the comb tooth offset is 1, 2, and 3. Among them, when the comb tooth offset is 1, the first subcarrier is numbered 1, the second subcarrier is numbered = 1 + comb tooth degree = 1 + 4 = 5, and the third subcarrier is numbered = 5 + comb tooth degree = 5 + 4 = 9. When the comb tooth offset is 2 and 3, the calculation method of the number of each subcarrier is similar and will not be described in detail here.

[0118] As shown in Figure 1(c), the comb tooth degree = 8. The shaded area indicates the position of the subcarriers represented by each comb tooth when the comb tooth offset is 0, that is, the location of the SRS frequency domain resources. The first subcarrier is numbered 0, the second subcarrier is numbered = 0 + comb tooth degree = 0 + 8 = 8, and the third subcarrier is numbered = 8 + comb tooth degree = 8 + 8 = 16. The white area indicates the position of each subcarrier when the comb tooth offset is 1 to 7, and will not be detailed here.

[0119] 5. SRS Measurement Bandwidth and Frequency Hopping Bandwidth: The SRS measurement bandwidth is the total bandwidth used by network devices for channel measurement using SRS. At each SRS transmission, the SRS resource can transmit signals across the entire measurement bandwidth or across a portion of the measurement bandwidth. Transmitting signals across only a portion of the measurement bandwidth is called frequency hopping (FH), with the length of each transmission portion being the FH. By using multiple SRS transmissions, network devices can determine the channel corresponding to the entire SRS measurement bandwidth.

[0120] The measurement bandwidth and frequency hopping bandwidth of the SRS will be described below in conjunction with Figure 2. Figure 2 is a schematic diagram of the frequency domain resources occupied by the SRS according to an embodiment of the present application.

[0121] As shown in Figure 2, one grid represents a subband in the frequency domain (for example, a resource block (RB)). The measurement bandwidth of the SRS is 16 RBs, and the frequency hopping bandwidth of the SRS is 4 RBs. The terminal device sends the SRS four times, and the network device can complete the measurement of the bandwidth.

[0122] 6. SRS sequence corresponding to each port: The network device can configure SRS resources for the terminal device. The SRS resources can correspond to one or more ports. The number of ports corresponding to the SRS resources can be set by the parameter The value of this parameter can be 1, 2 or 4. The SRS sequence corresponding to the port number pi among the multiple ports satisfies the following formula:

[0123] in, For the SRS base sequence, a ZC sequence can usually be used. The specific generation method is determined by the sequence length. v and u are the numbers of a base sequence in the SRS base sequence group. For different SRS sequence lengths, there are at least 30 base sequences. These 30 base sequences are further divided into 30 base sequence groups, each group corresponds to a group number u, u∈{0, 1..., 29}. Based on different SRS sequence lengths, each base sequence group further contains 1 or 2 base sequences, corresponding to sequence numbers v, u∈{0, 1}. δ=log2(K TC ). Among them, K TC Indicates the degree of combing. Indicates the length of the SRS sequence, in is the number of subcarriers in an RB, s is the number of RBs occupied by SRS in one frequency hopping transmission, and n is the number of sequence elements.

[0124] From the calculation formula of the above SRS sequence, it can be seen that each port corresponds to an α i(denotes cyclic shift), where in,

[0125] Yes and K TC Joint configuration. and K TC The corresponding relationship is shown in Table 1.

[0126] Table 1

[0127] It is understood that in this application, the CS value corresponding to the port number pi is It can be understood as a cyclic shift parameter, rather than the actual cyclic shift α corresponding to the port. i , just in determining the actual cyclic shift α corresponding to the port i When the cyclic shift parameter (i.e. ) determines, for example, the actual cyclic shift corresponding to the port number pi The port here corresponds to the actual cyclic shift α i It can be considered as the phase offset factor multiplied by the SRS sequence in the frequency domain, which is equivalent to the offset of the cyclic shift generated by the SRS sequence in the time domain.

[0128] In addition, one port corresponds to one comb offset. The comb offset corresponding to the port number pi satisfies the following formula:

[0129] FIG3 is a schematic diagram of channel responses corresponding to four ports of SRS resources provided in an embodiment of the present application.

[0130] As shown in Figure 3, assume that the network device configures the port number corresponding to SRS resource 1 for the terminal device K TC =2, The CS values ​​corresponding to the four ports are 0, 2, 4, and 6, respectively. The vertical lines in the boxes represent the channel responses corresponding to the ports. It can be seen that the channel responses corresponding to the four ports are different.

[0131] Taking SRS as an example, network equipment can configure SRS resources for terminal devices. One SRS resource can correspond to one or more ports, and the terminal device can use the SRS resources on different ports to send different SRSs. Currently, one SRS resource can correspond to two ports, but two-port SRS resources may not meet user needs. However, evolving to four ports in the short term is difficult. Therefore, three ports are attracting industry attention as a potential important evolutionary model.

[0132] To this end, the present application provides a reference signal transmission method, where a terminal device can receive configuration information of an SRS resource, and determine the CS value and comb offset of each of the three ports corresponding to the SRS resource based on the maximum number of CS values ​​included in the configuration information, the comb offset of the reference port, and the CS value of the reference port. In this way, the terminal device can generate the SRS of the three ports based on the CS values ​​and comb offsets corresponding to the three ports, and then send the SRS resources corresponding to the three ports to the network device.

[0133] The following will describe in detail the reference signal transmission method provided by the embodiment of the present application in conjunction with the accompanying drawings. It should be understood that the embodiment shown below describes the method from the perspective of the interaction between the terminal device and the network device, but should not constitute any limitation on the execution subject of the method. As long as it is possible to run a program that records the code of the method provided by the embodiment of the present application, the method provided by the embodiment of the present application can be executed. For example, the terminal device can also be replaced by a component configured in the terminal device (such as a chip, a chip system, etc.), or other functional modules that can call a program and execute the program, and the network device can also be replaced by a component configured in the network device (such as a chip, a chip system, etc.), or other functional modules that can call a program and execute the program. The embodiment of the present application does not limit this.

[0134] Figure 4 is a schematic flow chart of a reference signal transmission method provided by an embodiment of the present application. The method 400 shown in Figure 4 may include step 410 and step 420. The various steps in the method 400 are described in detail below.

[0135] In step 410, the network device sends configuration information of an SRS resource to the terminal device, where the SRS resource corresponds to three ports. Accordingly, the terminal device receives the configuration information of the SRS resource.

[0136] The configuration information includes the maximum number of CS values, the comb offset of the predefined reference port, and the CS value of the reference port. The predefined reference port can be any one of the three ports, and this application does not limit this. The configuration information can be used to indicate the CS value and comb offset corresponding to each of the three ports.

[0137] In addition, the SRS resource corresponds to three ports, which can be understood as the SRS resource is configured with three ports, or in other words, the SRSs of the three ports are sent through the SRS resource. The terminal device can determine the CS value and comb offset corresponding to each of the three ports based on the configuration information of the SRS resource.

[0138] The comb offset corresponding to the frequency domain resource of the SRS of each of the three ports mentioned above includes the following three possible designs:

[0139] Design 1: The frequency domain resources of the SRS for each of the three ports correspond to the same comb offset. That is, the comb offsets corresponding to each of the three ports are the same, or in other words, the frequency domain resources of the SRS for each of the three ports are determined by the same comb offset. It will be understood that in this design, the comb offset corresponding to the frequency domain resources of the SRS for each of the three ports can be configured by the network device, for example, the comb offset of the reference port.

[0140] Design 2: The frequency domain resources of the SRS for the first and second ports of the three ports correspond to different comb offsets than the frequency domain resources of the SRS for the third port of the three ports, where the reference port is the first port or the second port. In other words, the comb offsets corresponding to the first and second ports are different from the comb offsets corresponding to the third port. Alternatively, the frequency domain resources of the SRS for the first and second ports are determined by one comb offset, while the frequency domain resources of the SRS for the third port are determined by another comb offset.

[0141] Design 3: The frequency domain resources of the SRS of each of the three ports correspond to three different comb tooth offsets. That is, the comb tooth offsets corresponding to each of the three ports are different, or in other words, the frequency domain resources of the SRS of each of the three ports are determined by three different comb tooth offsets.

[0142] The following describes in detail how to determine the CS value and comb offset corresponding to each port under the above design.

[0143] It should be noted that, in this application, one port pi corresponds to one comb tooth offset. Indicates the starting frequency domain position of the port pi It is determined according to the following formula: in, Indicates the configured frequency domain RB offset, represents the frequency domain subband offset, Indicates the comb offset, It is configured by the network device. After the terminal device determines the comb offset corresponding to the port, it can determine the starting frequency domain position according to the above formula.

[0144] For Design 1:

[0145] The three ports corresponding to the SRS resource correspond to the same comb offset, which can be indicated by the network device, for example. The CS value corresponding to the port with port number pi among the three ports is Satisfies the following formula:

[0146] or,

[0147] Among them, the maximum number of CS values Comb offsets for predefined reference ports And the CS value of the reference port It is the network device configuration. In addition, the other expressions in the formula Any value other than 8.

[0148] It is understood that in this application, the port number 1000 is used as a reference port for example only and should not constitute any limitation to this application. For example, when the port number Y is used as the reference port, the CS value corresponding to the port number pi among the three ports is Satisfies the following formula: or,

[0149] The value of pi can be Y, Y+1 or Y+2.

[0150] Illustratively, after receiving the above configuration information, the terminal device may determine the CS value corresponding to each of the above three ports according to Formula 3 or Formula 4.

[0151] 5 and 6 , an example of using Formula 3 and Formula 4 to obtain the CS value corresponding to each of the three ports will be given below.

[0152] FIG5 is a schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application.

[0153] As shown in Figure 5a), K TC =2, The SRS resources configured on the network device correspond to three ports, namely The frequency domain resources of the SRS of the three ports correspond to the same comb tooth offset, that is, the three ports correspond to the same comb tooth offset, and the comb tooth offset is specifically 0. For SRS resource 1, according to formula 3, the port number 1000 (also known as port 0 in the figure) corresponds to CS 0, the port number 1001 (also known as port 1 in the figure) corresponds to CS 2, and the port number 1002 (also known as port 2 in the figure) corresponds to CS 4. For SRS resource 2, according to Formula 3, the port numbered 1000 (i.e., port 0 in the figure) corresponds to CS 1, the port numbered 1001 (i.e., port 1 in the figure) corresponds to CS 3, and the port numbered 1002 (i.e., port 2 in the figure) corresponds to CS 5. For the three ports corresponding to the same SRS resource, the difference between the CS value corresponding to port 0 and the CS value corresponding to port 1 is 2, the difference between the CS value corresponding to port 1 and the CS value corresponding to port 2 is 2, and the difference between the CS value corresponding to port 0 and the CS value corresponding to port 2 is 4. In other words, the minimum difference between any two of the three CS values ​​corresponding to the three ports is

[0154] As shown in Figure 5(b), K TC =2, The SRS resources configured on the network device correspond to three ports, namely The frequency domain resources of the SRS of the three ports correspond to the same comb tooth offset, which is specifically 0. For SRS resource 1, according to formula 4, the port number 1000 (i.e., port 0 in the figure) corresponds to CS 0, the port number 1001 (i.e., port 1 in the figure) corresponds to CS 3, and the port number 1002 (i.e., port 2 in the figure) corresponds to CS 6. For SRS resource 2, according to Formula 4, the port numbered 1000 (i.e., port 0 in the figure) corresponds to CS 1, the port numbered 1001 (i.e., port 1 in the figure) corresponds to CS 4, and the port numbered 1002 (i.e., port 2 in the figure) corresponds to CS 7. Among them, for the three ports corresponding to the same SRS resource, the difference between the CS value corresponding to port 0 and the CS value corresponding to port 1 is 3, the difference between the CS value corresponding to port 1 and the CS value corresponding to port 2 is 3, and the difference between the CS value corresponding to port 0 and the CS value corresponding to port 2 is 6. In other words, the minimum value of the difference between any two of the three CS values ​​corresponding to the three ports is

[0155] FIG6 is another schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application. Unlike FIG5 , in FIG6 , Divisible by 3.

[0156] As shown in Figure 6a), K TC =4, The SRS resources configured on the network device correspond to three ports, namely The frequency domain resources of the SRS of the three ports correspond to the same comb tooth offset, which is specifically 0. For SRS resource 1, according to Formula 3 or Formula 4, the port numbered 1000 (i.e., port 0 in the figure) corresponds to CS 0, the port numbered 1001 (i.e., port 1 in the figure) corresponds to CS 4, and the port numbered 1002 (i.e., port 2 in the figure) corresponds to CS 8. For SRS resource 2, according to formula 3 or formula 4, the port number 1000 (i.e., port 0 in the figure) corresponds to CS 1, the port number 1001 (i.e., port 1 in the figure) corresponds to CS 5, and the port number 1002 (i.e., port 2 in the figure) corresponds to CS 9. Similarly, we can derive and The CS values ​​corresponding to each port are not described in detail here. For the three ports corresponding to the same SRS resource, the difference between the CS value corresponding to port 0 and the CS value corresponding to port 1 is 4, the difference between the CS value corresponding to port 1 and the CS value corresponding to port 2 is 4, and the difference between the CS value corresponding to port 0 and the CS value corresponding to port 2 is 8. In other words, the minimum difference between any two CS values ​​of the three ports is

[0157] As shown in Figure 6(b), K TC =8, The SRS resources configured on the network device correspond to three ports, namely The frequency domain resources of the SRS of the three ports correspond to the same comb tooth offset, which is specifically 0. For SRS resource 1, according to Formula 3 or Formula 4, the port numbered 1000 (i.e., port 0 in the figure) corresponds to CS 0, the port numbered 1001 (i.e., port 1 in the figure) corresponds to CS 2, and the port numbered 1002 (i.e., port 2 in the figure) corresponds to CS 4. For SRS resource 2, according to Formula 3 or Formula 4, the port numbered 1000 (i.e., port 0 in the figure) corresponds to CS 1, the port numbered 1001 (i.e., port 1 in the figure) corresponds to CS 3, and the port numbered 1002 (i.e., port 2 in the figure) corresponds to CS 5. For the three ports corresponding to the same SRS resource, the difference between the CS value corresponding to port 0 and the CS value corresponding to port 1 is 2, the difference between the CS value corresponding to port 1 and the CS value corresponding to port 2 is 2, and the difference between the CS value corresponding to port 0 and the CS value corresponding to port 2 is 4. In other words, the minimum value of the difference between any two of the three CS values ​​corresponding to the three ports is

[0158] As can be seen from Figures 5 and 6, when the frequency domain resources of the SRS of the three ports correspond to the same comb offset, the minimum difference between the CS values ​​corresponding to any two ports of the three ports is or

[0159] It is not difficult to understand that for Design 1, there is a high possibility that the SRS resources corresponding to three ports conflict with the SRS resources corresponding to two ports (or four ports). Several examples of conflicts are given below in conjunction with FIG. 7 and FIG. 8 .

[0160] FIG7 is a schematic diagram of CS values ​​corresponding to respective ports when SRS resources provided in an embodiment of the present application correspond to different numbers of ports.

[0161] As shown in Figure 7a), K TC =2, For the SRS resources corresponding to three ports (3-port SRS resources in the figure), the frequency domain resources of the SRS of the three ports correspond to the same comb tooth offset, which is specifically 0. According to Formula 3 or Formula 4, the three ports correspond to CS 1, CS 4, and CS 7, respectively. For the SRS resources corresponding to the four ports (4-port SRS resources in the figure), the frequency domain resources of the SRS of the four ports correspond to the same comb tooth offset, which is specifically 0. According to Formula 1, the four ports correspond to CS 0, CS 2, CS 4, and CS 6, respectively. It can be seen that the 4-port-SRS resource will conflict with the 3-port-SRS resource on CS 4 with a comb offset of 0.

[0162] As shown in Figure 7b), K TC =8, For the SRS resources corresponding to three ports (3-port SRS resources in the figure), the frequency domain resources of the SRS of the three ports correspond to the same comb tooth offset, which is specifically 0. According to Formula 3 or Formula 4, the three ports correspond to CS 0, CS 2, and CS 4, respectively. For the SRS resources corresponding to the four ports (4-port SRS resources in the figure), the frequency domain resources of the SRS of the four ports correspond to two comb tooth offsets. According to Formula 2, the comb tooth offsets are specifically 0 and 4. If According to Formula 1, the four ports correspond to CS 1 and CS 4 respectively. It can be seen that the 4-port-SRS resource will conflict with the 3-port-SRS resource on CS 4 with a comb offset of 0.

[0163] FIG8 is another schematic diagram of the CS values ​​corresponding to each port when SRS resources correspond to different numbers of ports, provided in an embodiment of the present application. Unlike FIG7 , in FIG8 , the frequency domain resources of the SRSs of the three ports of the SRS resource correspond to two comb tooth offsets. However, when the frequency domain resources of the SRSs of the three ports of the SRS resource correspond to two comb tooth offsets, if the CS values ​​corresponding to each of the three ports are determined based on Formula 1, conflicts may also occur.

[0164] As shown in Figure 8a), K TC =2, For the SRS resources corresponding to three ports (3-port-SRS resources in the figure), the frequency domain resources of the SRS of the three ports correspond to two comb offsets. According to Formula 2, the comb offsets are 0 and 1 respectively. For example, the comb offset corresponding to the frequency domain resources of the SRS of ports 0 and 2 is 0, and the comb offset corresponding to the frequency domain resources of the SRS of port 1 is 1. Then, when the comb offset is 0, the CS values ​​corresponding to ports 0 and 2 can be determined according to the method of determining the CS value for the SRS resources of the two ports. For example, if That is, for the SRS resource 1 with three ports (referred to as 3-port-SRS resource 1 in the figure), the port numbered 1000 (also port 0 in the figure) corresponds to CS 0, the port numbered 1001 (also port 1 in the figure) corresponds to CS 2, and the port numbered 1002 (also port 2 in the figure) corresponds to CS 4. and The CS values ​​corresponding to each port can be obtained similarly, and will not be repeated here. For the SRS resources corresponding to two ports (the 2-port-SRS resource in the figure), the frequency domain resources of the SRSs of these two ports correspond to the same comb offset, specifically 1. Each of the two ports corresponds to CS 0 and CS 3, respectively. It can be seen that the 2-port-SRS resource will conflict with the 3-port-SRS resource on CS 3, which has a comb offset of 1.

[0165] As shown in Figure 8(b), K TC =8, For the SRS resources corresponding to three ports (3-port-SRS resources in the figure), the frequency domain resources of the SRS of the three ports correspond to two comb offsets. According to Formula 1, the comb offsets are 0 and 4 respectively. For example, the comb offset corresponding to the frequency domain resources of the SRS of ports 0 and 2 is 0, and the comb offset corresponding to the frequency domain resources of the SRS of port 1 is 4. Then, when the comb offset is 0, the CS values ​​corresponding to ports 0 and 2 can be determined according to the method of determining the CS value for the SRS resources of the two ports. For example, if That is, for the SRS resource 1 with three ports (referred to as 3-port-SRS resource 1 in the figure), the port numbered 1000 (also port 0 in the figure) corresponds to CS 0, the port numbered 1001 (also port 1 in the figure) corresponds to CS 0, and the port numbered 1002 (also port 2 in the figure) corresponds to CS 3. and The CS values ​​corresponding to each port can be obtained similarly, and will not be repeated here. For the SRS resources corresponding to two ports (the 2-port-SRS resource in the figure), the frequency domain resources of the SRSs of these two ports correspond to the same comb offset, specifically 4. Each of the two ports corresponds to CS 0 and CS 3, respectively. It can be seen that the 2-port-SRS resource will conflict with the 3-port-SRS resource on CS 3, which has a comb offset of 4.

[0166] In summary, there is a high possibility that the SRS resources corresponding to the three ports conflict with the SRS resources of the two ports (or four ports). Therefore, in the present application, when the frequency domain resources of the SRS of the first port and the second port among the above three ports correspond to different comb tooth offsets from the frequency domain resources of the SRS of the third port among the above three ports, the difference between the CS value corresponding to the third port and the CS value of the reference port changes as the CS value of the reference port changes. If the CS value of the configured reference port changes, the difference between the CS value corresponding to the third port and the CS value of the reference port will also change accordingly. In other words, the difference between the CS value corresponding to the third port and the CS value of the reference port is related to the CS value of the reference port. In this way, the difference between the CS value corresponding to the third port and the CS value of the reference port can be adjusted by configuring different CS values ​​of the reference ports.

[0167] Optionally, the CS value corresponding to the third port among the three ports is related to the CS value of the reference port. That is, if the CS value of the reference port changes, the CS value corresponding to the third port will also change accordingly.

[0168] One possible implementation is that the CS value corresponding to the third port satisfy: in, Follow The changing function value, The value is an integer, and mod means the remainder operation.

[0169] For example, That is, the CS value corresponding to the third port satisfy: m is an integer. It can be seen that if the CS value of the reference port of different SRS resources is In addition, if the CS values ​​corresponding to the reference ports of different SRS resources are different, then the CS value corresponding to the third port is different. Therefore, the difference between the third ports of different SRS resources is greater than or equal to 2. In other words, there is an interval between the CS values ​​corresponding to the third ports of different SRS resources. In this way, the CS values ​​of this interval can correspond to SRS resources of other types of ports (such as four ports, or two ports, etc.), which is conducive to improving resource utilization. In addition, this interval helps reduce the possibility of conflict between SRS resources of different types of ports. For example, m can be a positive integer such as 1, 2, 3, or a negative integer such as -1, -2, etc., and this application does not limit this.

[0170] For example, the CS value corresponding to the port with the port number pi among the three ports can be determined by the following formula, or in other words, the CS value corresponding to the port with the port number pi among the three ports can be determined by the following formula: Satisfies the following formula:

[0171] in, With port number and Related, mod means remainder operation, the value of pi is 1000, 1001 or 1002, and the port number 1000 is the reference port.

[0172] One possible design is, In other words, the CS value corresponding to the port number pi among the three ports mentioned above is Satisfies the following formula:

[0173] Where mod represents the remainder operation, the value of pi is 1000, 1001, or 1002, and the port number 1000 is the reference port.

[0174] It is understood that in this application, the port number 1000 is used as a reference port for example only and should not constitute any limitation to this application. For example, when the port number Y is used as the reference port, the CS value corresponding to the port number pi among the three ports is Satisfies the following formula: The value of pi can be Y, Y+1 or Y+2.

[0175] Optionally, when and or 2 o'clock, In other words, the CS value corresponding to the port number pi among the three ports mentioned above is Satisfies the following formula:

[0176] The value of pi is 1000, 1001 or 1002, and the port number 1000 is the reference port. and or 2, the terminal device can determine the CS value corresponding to each of the three ports according to Formula 6. or When the value is other, the terminal device can determine the CS value corresponding to each of the three ports according to Formula 5.

[0177] It is understood that in this application, the port number 1000 is used as a reference port for example only and should not constitute any limitation to this application. For example, when the port number Y is used as a reference port, and or 2, the CS value corresponding to the port number pi among the three ports above is Satisfies the following formula:

[0178] The value of pi can be Y, Y+1 or Y+2.

[0179] In addition, the comb offset corresponding to the port number pi among the three ports mentioned above is Satisfies the following formula:

[0180] in, Indicates the number of ports is 3, K TC Indicates the comb tooth degree. The value of pi is 1000, 1001, or 1002. The port numbered 1000 is the reference port.

[0181] It is understood that in this application, the port number 1000 is used as a reference port for example only and should not constitute any limitation to this application. For example, when the port number Y is used as the reference port, the comb offset corresponding to the port number pi among the three ports is Satisfies the following formula: The value of pi can be Y, Y+1 or Y+2.

[0182] 9 and 10 , an example of using Formula 5 and Formula 6 to obtain the CS value corresponding to each of the three ports will be given below.

[0183] FIG9 is another schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application, wherein port 1 is an example of the third port, port 0 is an example of the first port, and port 2 is an example of the second port.

[0184] As shown in Figure 9a), K TC =2, The SRS resources configured on the network device correspond to three ports, namely According to Formula 7, the comb offset corresponding to the frequency domain resources of the SRS of the port number 1000 (i.e., port 0 in the figure) and the port number 1002 (i.e., port 2 in the figure) is 0, and the comb offset corresponding to the frequency domain resources of the SRS of the port number 1001 (i.e., port 1 in the figure) is 1. For SRS resource 1, according to formula 5, the port number 1000 (i.e., port 0 in the figure) corresponds to CS 0, the port number 1001 (i.e., port 1 in the figure) corresponds to CS 1, and the port number 1002 (i.e., port 2 in the figure) corresponds to CS 4. Similarly, we can get The CS values ​​corresponding to each port when the value is 1, 2, or 3. For the three ports corresponding to the same SRS resource, the frequency domain resources of the SRSs of port 0 and port 2 correspond to the same comb offset, and the difference between the CS values ​​corresponding to port 0 and port 2 is 4. In other words, when the frequency domain resources of the SRSs of two of the three ports correspond to the same comb offset, the difference between the CS values ​​corresponding to the two ports is 6. As can be seen from the figure, when the comb offset is 1, the positions with CS values ​​of 0, 2, 4, and 6 are vacant. Therefore, these positions can be used for SRS resources corresponding to two ports (or one port, or four ports).

[0185] As shown in Figure 9(b), K TC =4, The SRS resources configured on the network device correspond to three ports, namely According to Formula 7, the comb offset corresponding to the frequency domain resources of the SRS of the port number 1000 (i.e., port 0 in the figure) and the port number 1002 (i.e., port 2 in the figure) is 0, and the comb offset corresponding to the frequency domain resources of the SRS of the port number 1001 (i.e., port 1 in the figure) is 2. For SRS resource 1, according to formula 5, the port number 1000 (that is, port 0 in the figure) corresponds to CS 0, the port number 1001 (that is, port 1 in the figure) corresponds to CS 1, and the port number 1002 (that is, port 2 in the figure) corresponds to CS 6. Similarly, we can get The CS values ​​corresponding to each port when the value is 1, 2, 3, 4, or 5. For the three ports corresponding to the same SRS resource, the frequency domain resources of the SRS of port 0 and port 2 correspond to the same comb offset, and the difference between the CS values ​​corresponding to port 0 and port 2 is 6. In other words, when the frequency domain resources of the SRS of two of the three ports correspond to the same comb offset, the difference between the CS values ​​corresponding to the two ports is 6.

[0186] FIG10 is another schematic diagram of CS values ​​corresponding to various ports provided in an embodiment of the present application.

[0187] As shown in Figure 10a), K TC =4, The SRS resources configured on the network device correspond to three ports, namely According to Formula 7, the comb offset corresponding to the frequency domain resources of the SRS of the port number 1000 (i.e., port 0 in the figure) and the port number 1002 (i.e., port 2 in the figure) is 0, and the comb offset corresponding to the frequency domain resources of the SRS of the port number 1001 (i.e., port 1 in the figure) is 2. For SRS resource 1, according to Formula 5, the port number 1000 (i.e., port 0 in the figure) corresponds to CS 2, the port number 1001 (i.e., port 1 in the figure) corresponds to CS 5, and the port number 1002 (i.e., port 2 in the figure) corresponds to CS 8. Similarly, we can get When the value is 3 or 5, the CS value corresponding to each port. For SRS resources corresponding to four ports, the comb offset corresponding to the frequency domain resources of the SRS of ports 0 and 2 is 0, and the comb offset corresponding to the frequency domain resources of the SRS of ports 1 and 3 is 2. Port 0 corresponds to CS 6, port 1 corresponds to CS 9, port 2 corresponds to CS 0, and port 3 corresponds to CS 3.

[0188] As shown in Figure 10(b), K TC =8, The SRS resources configured on the network device correspond to three ports, namely According to Formula 7, the comb offset corresponding to the frequency domain resources of the SRS of the port number 1000 (i.e., port 0 in the figure) and the port number 1002 (i.e., port 2 in the figure) is 0, and the comb offset corresponding to the frequency domain resources of the SRS of the port number 1001 (i.e., port 1 in the figure) is 4. For SRS resource 1, according to formula 6, the port number 1000 (that is, port 0 in the figure) corresponds to CS 0, the port number 1001 (that is, port 1 in the figure) corresponds to CS 1, and the port number 1002 (that is, port 2 in the figure) corresponds to CS 3. Similarly, we can get When the value is 1 or 2, the CS value corresponding to each port. For the three ports corresponding to the same SRS resource, the frequency domain resources of the SRS of port 0 and port 2 correspond to the same comb offset, and the difference between the CS values ​​corresponding to port 0 and port 2 is 3. In other words, when the frequency domain resources of the SRS of two of the three ports correspond to the same comb offset, the difference between the CS values ​​corresponding to the two ports is 3.

[0189] As can be seen from Figures 9 and 10, when the frequency domain resources of the SRS of two of the three ports correspond to the same comb offset, the difference in CS values ​​corresponding to the two ports is or

[0190] Figure 11 is a schematic diagram of CS values ​​corresponding to SRS resources of different ports provided in an embodiment of the present application. In Figure 11, for an SRS resource corresponding to three ports, the CS value of each port can be determined directly according to the method for determining the CS value when the SRS resource corresponds to four ports. In other words, the CS value of each port when the SRS resource corresponds to three ports can be calculated according to Formula 1.

[0191] As shown in Figure 11, K TC =4, The SRS resources configured on the network device correspond to three ports, namely The comb offset corresponding to the frequency domain resources of the SRS of the port number 1000 (i.e., port 0 in the figure) and the port number 1002 (i.e., port 2 in the figure) is 0, and the comb offset corresponding to the frequency domain resources of the SRS of the port number 1001 (i.e., port 1 in the figure) is 2. For SRS resource 1, port number 1000 (also known as port 0 in the diagram) corresponds to CS 7, port number 1001 (also known as port 1 in the diagram) corresponds to CS 10, and port number 1002 (also known as port 2 in the diagram) corresponds to CS 1. Similarly, the CS values ​​corresponding to the ports of other SRS resources can be obtained. For an SRS resource with four ports, port 0 corresponds to CS 6, port 1 corresponds to CS 9, port 2 corresponds to CS 3, and port 3 corresponds to CS 0. For design three:

[0192] The frequency domain resources of the SRS of each of the three ports correspond to three different comb tooth offsets. Under this design, the CS value corresponding to each of the three ports may be configured by the network device.

[0193] Exemplarily, the comb tooth offset corresponding to the frequency domain resource of the SRS of each of the three ports, or in other words, the comb tooth offset corresponding to each of the three ports satisfies the following formula:

[0194] or,

[0195] or,

[0196] in, Indicates that the number of ports is 3, mod indicates the remainder operation, the value of pi is 1000, 1001, or 1002, and the port number 1000 is the reference port.

[0197] For example, K TC =8, The comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1000 is 0, the comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1001 is 1, and the comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1002 is 2.

[0198] For example, K TC =8, The comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1000 is 0, the comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1001 is 3, and the comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1002 is 6.

[0199] For example, K TC =8, The comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1000 is 0, the comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1001 is 2, and the comb tooth offset corresponding to the frequency domain resource of the SRS of the port number 1002 is 5.

[0200] It can be understood that if the terminal device supports multiple of the above-mentioned Design 1, Design 2 or Design 3, the network device can indicate which design to use, or the protocol predefines which design to use. In other words, the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports can be predefined or indicated by the network device. When the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is 1, the terminal device uses Design 1 to determine the comb tooth offsets and CS values ​​corresponding to each port; when the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is 2, the terminal device uses Design 2 to determine the comb tooth offsets and CS values ​​corresponding to each port; when the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is 3, the terminal device uses Design 3 to determine the comb tooth offsets and CS values ​​corresponding to each port.

[0201] In the case where the number of comb offsets corresponding to the frequency domain resources of the SRSs of the three ports is indicated by a network device, one possible implementation is that the number of comb offsets corresponding to the frequency domain resources of the SRSs of the three ports is related to the value range of the CS value of the reference port. In other words, the network device can implicitly indicate the number of comb offsets corresponding to the frequency domain resources of the SRSs of the three ports through the value range of the CS value of the reference port.

[0202] For example, if the terminal device supports both Design 1 and Design 2, the CS value of the reference port can be in the range of When , it indicates that design 1 is adopted, that is, the frequency domain resources of the SRS of each of the three ports correspond to the same comb tooth offset.

[0203] For example, when and (ie, the three ports corresponding to the SRS resource), the comb tooth offsets corresponding to the three ports corresponding to the SRS resource are the same, for example, the comb tooth offsets corresponding to the three ports are the same. The calculation formula for the CS value corresponding to each of the three ports may be, for example:

[0204] or,

[0205] For example, when and (i.e., three ports corresponding to SRS resources), the frequency domain resources of the SRS of the first port and the second port among the three ports correspond to different comb tooth offsets from the frequency domain resources of the SRS of the third port among the three ports. The comb tooth offset corresponding to the frequency domain resource of the SRS of the port with port number pi satisfies the following formula:

[0206] The CS value corresponding to each of the three ports satisfies the following formula, for example:

[0207] For another example, when the terminal device supports three designs, namely, design 1, design 2, and design 3, the range of the CS value of the reference port can be divided into three sections, such as Each section corresponds to a design.

[0208] For example, when and (ie, the three ports corresponding to the SRS resource), the comb tooth offsets corresponding to the three ports corresponding to the SRS resource are the same, for example, the comb tooth offsets corresponding to the three ports are the same. The calculation formula for the CS value corresponding to each of the three ports may be, for example:

[0209] or,

[0210] when and (i.e., three ports corresponding to SRS resources), the frequency domain resources of the SRS of the first port and the second port among the three ports correspond to different comb tooth offsets from the frequency domain resources of the SRS of the third port among the three ports. The comb tooth offset corresponding to the frequency domain resource of the SRS of the port with port number pi satisfies the following formula:

[0211] The CS value corresponding to each of the three ports satisfies the following formula, for example:

[0212] when and (ie, three ports corresponding to SRS resources), the frequency domain resources of the SRS of the three ports correspond to three different comb tooth offsets. For example, the comb tooth offset corresponding to the frequency domain resources of the SRS of each port satisfies the following formula:

[0213] or,

[0214] or,

[0215] In addition, the CS value corresponding to each of the three ports mentioned above

[0216] In step 420, the terminal device sends the SRS resources corresponding to the three ports to the network device. Correspondingly, the network device receives the SRS resources corresponding to the three ports.

[0217] After determining the CS value and comb offset corresponding to each of the three ports, the terminal device sends the SRS of the three ports to the network device through the SRS resource.

[0218] Based on the above technical solution, the terminal device can receive the configuration information of the SRS resource, and determine the CS value and comb offset of each of the three ports corresponding to the SRS resource based on the maximum number of CS values ​​included in the configuration information, the comb offset of the reference port, and the CS value of the reference port. In this way, the terminal device can generate the SRS of the three ports based on the CS values ​​and comb offsets corresponding to the three ports, and then send the SRS resources corresponding to the three ports to the network device.

[0219] 12 to 15 are schematic structural diagrams of possible communication devices provided in embodiments of the present application.

[0220] FIG12 is a schematic block diagram of a communication device 1200 provided in an embodiment of the present application.

[0221] As shown in FIG. 12 , the communication device 1200 includes a first transceiver module 1210 and a second transceiver module 1220 .

[0222] The above-mentioned device 1200 can be used to implement the functions of the terminal device in the method embodiment shown in Figure 4 above, or the above-mentioned device 1200 is used to implement the functions of the network device in the method embodiment shown in Figure 4 above.

[0223] When the apparatus 1200 is used to implement the function of the terminal device in the method embodiment shown in FIG4 , the first transceiver module 1210 can be used to receive the configuration information of the SRS resource, the SRS resource corresponding to three ports, and the configuration information including the maximum number of CS values. Comb offset of the reference port and the CS value of the reference port The reference port is a predefined port among the three ports; the second transceiver module 1220 may be configured to send the SRS resources corresponding to the three ports to the network device.

[0224] When the apparatus 1200 is used to implement the function of the network device in the method embodiment shown in FIG4 , the first transceiver module 1210 can be used to send the configuration information of the SRS resource to the terminal device, wherein the SRS resource corresponds to three ports and the configuration information includes the maximum number of CS values. Comb offset of the reference port and the CS value of the reference port The reference port is a predefined port among the three ports; the second transceiver module 1220 can be used to receive SRS resources corresponding to the three ports.

[0225] A more detailed description of the first transceiver module 1210 and the second transceiver module 1220 can be directly obtained by referring to the relevant description in the method embodiment shown in Figure 4, and will not be repeated here.

[0226] It should be understood that the division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically as separate modules, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0227] Figure 13 is another schematic block diagram of a communication device 1300 provided in an embodiment of the present application. The device 1300 may be a chip system, or may be a device configured with a chip system for implementing the method described in the above method embodiment. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0228] As shown in Figure 13, the device 1300 may include a processor 1310 and a communication interface 1320. The communication interface 1320 may be used to communicate with other devices via a transmission medium, thereby enabling the device 1300 to communicate with other devices. The communication interface 1320 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of performing transceiver functions. The processor 1310 may utilize the communication interface 1320 to input and output data and implement the method described in the embodiment corresponding to Figure 4. Specifically, the device 1300 may be used to implement the functions of a network device or terminal device in the above-described method embodiments.

[0229] Optionally, the device 1300 further includes at least one memory 1330 for storing program instructions and / or data. The memory 1330 is coupled to the processor 1310. Coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. The processor 1310 may operate in conjunction with the memory 1330. The processor 1310 may execute program instructions stored in the memory 1330. At least one of the at least one memory may be included in the processor.

[0230] The specific connection medium between the processor 1310, communication interface 1320, and memory 1330 is not limited in the embodiments of the present application. In Figure 13, the processor 1310, communication interface 1320, and memory 1330 are connected via a bus 1340. Bus 1340 is represented by a bold line in Figure 13, and the connection methods between other components are only for schematic illustration and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in Figure 13, but this does not mean that there is only one bus or one type of bus.

[0231] Figure 14 is a schematic diagram of the structure of a network device provided in an embodiment of the present application, which may be, for example, a base station. A base station is an example of a network device. As shown in the figure, the base station 1400 may include one or more DUs 1410 and one or more CUs 1420. The CU 1420 may communicate with the next generation core network (NG core, NC). The DU 1410 may include at least one antenna 1411, at least one radio frequency unit 1412, at least one processor 1413, and at least one memory 1414. The DU 1410 is primarily used for transmitting and receiving radio frequency signals, converting radio frequency signals into baseband signals, and performing some baseband processing. The CU 1420 may include at least one processor 1422 and at least one memory 1421. The CU 1420 and the DU 1410 may communicate via an interface, wherein the control plane (CP) interface may be an Fs-C, such as F1-C, and the user plane (UP) interface may be an Fs-U, such as F1-U.

[0232] The CU 1420 is primarily used for baseband processing and base station control. The DU 1410 and CU 1420 can be physically located together or separately, i.e., in a distributed base station. The CU 1420 is the control center of the base station, also known as a processing unit, and is primarily used to perform baseband processing functions. For example, the CU 1420 can be used to control the base station to execute the method executed by the network device in the embodiment shown in FIG3 .

[0233] In one example, the CU 1420 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 1421 and the processor 1422 may serve one or more boards. That is, a memory and a processor may be separately set on each board. It is also possible that multiple boards share the same memory and processor. In addition, necessary circuits may be provided on each board. The DU 1410 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 1414 and the processor 1413 may serve one or more boards. That is, a memory and a processor may be separately set on each board. It is also possible that multiple boards share the same memory and processor. In addition, necessary circuits may be provided on each board.

[0234] It should be understood that the base station 1400 shown in Figure 14 is only one possible architecture of a network device and should not constitute any limitation to this application. The method provided in this application is applicable to network devices with other architectures. For example, network devices including a CU, a DU, and an active antenna processing unit (AAU). This application does not limit the specific architecture of the network device.

[0235] FIG15 is a schematic diagram of the structure of a terminal device 1500 provided in an embodiment of the present application. The terminal device 1500 can be used to implement the steps performed by the terminal device in the embodiment shown in FIG4. As shown in FIG15, the terminal device 1500 includes a processor 1501 and a transceiver 1502.

[0236] Optionally, the terminal device 1500 further includes a memory 1503. The processor 1501, the transceiver 1502, and the memory 1503 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 1503 is used to store a computer program, and the processor 1501 is used to call and execute the computer program from the memory 1503 to control the transceiver 1502 to send and receive signals.

[0237] Optionally, the terminal device 1500 may further include an antenna 1504 for transmitting, via wireless signals, uplink data or uplink control signaling output by the transceiver 1502. Optionally, the terminal device 1500 may further include a Wi-Fi module 1511 for accessing a wireless network.

[0238] The processor 1501 and the memory 1503 may be combined into a processing device, and the processor 1501 is used to execute the program code stored in the memory 1503 to implement the above functions. In specific implementation, the memory 1503 may also be integrated into the processor 1501 or independent of the processor 1501.

[0239] The transceiver 1502 may correspond to the first transceiver module 1210, the second transceiver module 1220 in FIG. 12 , or the communication interface 1320 in FIG. The transceiver 1502 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0240] Optionally, the terminal device 1500 may further include a power supply 1505 for providing power to various devices or circuits in the terminal device 1500 .

[0241] In addition, in order to make the functions of the terminal device more complete, the terminal device 1500 may also include one or more of an input unit 1506, a display unit 1507, an audio circuit 1508, a camera 1509 and a sensor 1510, and the audio circuit may also include a speaker 1508a, a microphone 1508b, etc.

[0242] It should be understood that the operations and / or functions of the various modules in the terminal device 1500 are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the description of the above method embodiments. To avoid repetition, detailed description is appropriately omitted here.

[0243] The present application also provides a computer program product, which includes: a computer program (also referred to as code, or instructions). When the computer program is executed, the method described in the embodiment shown in FIG. 4 can be implemented.

[0244] The present application also provides a computer-readable storage medium storing a computer program (also referred to as code or instructions). When the computer program is executed, the method described in the embodiment shown in FIG4 can be implemented.

[0245] An embodiment of the present application provides a communication system, which includes the terminal device and the network device as described above.

[0246] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0247] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0248] The terms "unit", "module", etc. used in this specification can be used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. The terms "unit" and "module" in the embodiments of this application have the same meaning and can be used interchangeably.

[0249] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, and can be electrical, mechanical, or other forms.

[0250] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0251] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0252] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0253] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the technology or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0254] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for transmitting a reference signal, characterized in that: include: Receive configuration information of a sounding reference signal SRS resource, the SRS resource corresponds to three ports, and the configuration information includes: the maximum number of cyclic shift CS values Comb offset at reference port and the CS value of the reference port The reference port is a predefined port among the three ports; The SRS resources corresponding to the three ports are sent to the network device.

2. The method according to claim 1, characterized in that When the frequency domain resources of the SRS of X ports among the three ports correspond to the same comb tooth offset, the minimum value of the difference between any two CS values ​​among the X CS values ​​corresponding to the X ports is or Wherein, X is an integer less than or equal to 3 and greater than 1.

3. The method according to claim 2, characterized in that The frequency domain resources of the SRS of the first port and the second port among the three ports correspond to different comb tooth offsets from the frequency domain resources of the SRS of the third port among the three ports, wherein the reference port is the first port or the second port.

4. The method according to claim 3, characterized in that The difference between the CS value corresponding to the third port and the CS value of the reference port changes as the CS value of the reference port changes.

5. The method according to claim 4, characterized in that The CS value corresponding to the third port satisfy: in, Follow The changing function value, The value is an integer, and mod means the remainder operation.

6. The method according to claim 5, characterized in that The CS value corresponding to the third port satisfy: in, m is an integer.

7. The method according to any one of claims 3 to 6, characterized in that The CS value corresponding to the port with port number pi among the three ports Satisfies the following formula: in, With port number and Related, mod means remainder operation, the value of pi is 1000, 1001 or 1002, and the port number 1000 is the reference port.

8. The method according to claim 7, characterized in that The CS value corresponding to the port with port number pi among the three ports Satisfies the following formula: in, 9. The method according to claim 7 or 8, characterized in that when and or 2, the CS value corresponding to the port with port number pi among the three ports is Satisfies the following formula: in, 10. The method according to any one of claims 3 to 9, characterized in that The comb offset corresponding to the port with port number pi among the three ports Satisfies the following formula: in, Indicates the number of ports is 3, K TC Indicates the comb tooth degree, mod indicates the modulus operation, and the port number 1000 is the reference port.

11. The method according to claim 2, characterized in that The frequency domain resources of the SRS of each of the three ports correspond to the same comb tooth offset.

12. The method according to claim 11, characterized in that The CS value corresponding to the port with port number pi among the three ports Satisfies the following formula: or Among them, mod represents the remainder operation, the value of pi is 1000, 1001 or 1002, and the port number 1000 is the reference port.

13. The method according to claim 1, characterized in that The frequency domain resources of the SRS of each of the three ports correspond to three different comb tooth offsets.

14. The method according to any one of claims 1 to 13, characterized in that The number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is predefined or indicated by the network device.

15. The method according to claim 14, characterized in that When the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is indicated by the network device, the number of comb tooth offsets corresponding to the frequency domain resources of the SRS of the three ports is related to the value range of the CS value of the reference port.

16. A method for transmitting a reference signal, characterized in that: include: Send the configuration information of the sounding reference signal SRS resource to the terminal device, the SRS resource corresponds to three ports, and the configuration information includes the maximum number of cyclic shift CS values Comb offset at reference port and the CS value of the reference port The reference port is a predefined port among the three ports; The SRS resources corresponding to the three ports are received.

17. The method according to claim 16, characterized in that When the frequency domain resources of the SRS of X ports among the three ports correspond to the same comb tooth offset, the minimum value of the difference between any two CS values ​​among the X CS values ​​corresponding to the X ports is or Wherein, X is an integer less than or equal to 3 and greater than 1.

18. The method according to claim 17, characterized in that The frequency domain resources of the SRS of the first port and the second port among the three ports correspond to different comb tooth offsets from the frequency domain resources of the SRS of the third port among the three ports, wherein the reference port is the first port or the second port.

19. The method according to claim 18, characterized in that The difference between the CS value corresponding to the third port and the CS value of the reference port changes as the CS value of the reference port changes.

20. The method of claim 19, wherein: The CS value corresponding to the third port satisfy: in, For Follow The changing function value, The value is an integer, and mod means the remainder operation.

21. The method of claim 20, wherein: The CS value corresponding to the third port satisfy: in, m is an integer.

22. The method according to any one of claims 18 to 21, characterized in that The CS value corresponding to the port with port number pi among the three ports Satisfies the following formula: in, With port number and Related, mod means remainder operation, the value of pi is 1000, 1001 or 1002, and the port number 1000 is the reference port.

23. The method of claim 22, wherein: The CS value corresponding to the port with port number pi among the three ports Satisfies the following formula: in, 24. The method according to claim 22 or 23, characterized in that when and or 2, the CS value corresponding to the port with port number pi among the three ports is Satisfies the following formula: in, 25. The method according to any one of claims 18 to 24, characterized in that The comb offset corresponding to the port with port number pi among the three ports Satisfies the following formula: in, Indicates the number of ports is 3, K TC Indicates the comb tooth degree, mod indicates the modulus operation, and the port number 1000 is the reference port.

26. A communication device, characterized in that: The method comprises a module for implementing the method according to any one of claims 1 to 15, or comprises a module for implementing the method according to any one of claims 16 to 25.

27. A communication device, characterized in that: comprising a processor and a memory, wherein: The memory is used to store computer programs; The processor is configured to call the computer program so that the apparatus implements the method according to any one of claims 1 to 15, or the apparatus implements the method according to any one of claims 16 to 25.

28. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction. When the computer program or instruction is executed by a computer, the method according to any one of claims 1 to 15 is implemented, or the method according to any one of claims 16 to 25 is implemented.

29. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed by a computer, the method according to any one of claims 1 to 15 is implemented, or the method according to any one of claims 16 to 25 is implemented.

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