Method and device for sending sounding reference signal SRS

Abstract

The present application provides a method for sending a sounding reference signal SRS, which can support multiple frequency hopping modes, thereby improving the flexibility of frequency hopping. The method includes: a terminal device receives first configuration information of an SRS resource from a network device, the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number N of SRS resources mapped to the same subcarrier and mapped to at least one continuous symbol in a time unit, N ≥ 1 and is an integer; the terminal device determines at least one first frequency domain resource mapped by the SRS resource in the first time unit according to the first configuration information; the terminal device sends the SRS to the network device in the at least one first frequency domain resource.

Description

[0001] This application is a divisional application based on the Chinese patent application filed with the China Patent Office on November 17, 2017, with application number 201711149046.X and application name “Method and device for sending sounding reference signal SRS”, all contents of which are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of communications, and in particular to a method and device for sending a sounding reference signal (SRS). Background Art

[0003] In Long Term Evolution (LTE) or evolved LTE (LTE-Advanced, LTE-A) systems, uplink measurements of terminal devices are achieved by sending a sounding reference signal (SRS). The network device obtains uplink channel state information by measuring the SRS sent by the terminal device. Furthermore, in LTE or LTE-A systems, due to the different distances between the terminal device and the network device (for example, a base station), the long-distance terminal device may be limited by power. In order to ensure that the base station receives an SRS with sufficient power, the terminal device must ensure narrowband when sending SRS. At this time, in order to measure the SRS of the total system bandwidth, the measurement of the total system bandwidth can only be completed by frequency hopping.

[0004] However, in LTE or LTE-A systems, frequency hopping is based on the bandwidth configured at the cell level, that is, the frequency hopping mode of the terminal device is determined according to the total SRS measurement bandwidth uniformly configured in the cell, and only supports frequency hopping between time slots. In addition, LTE does not support non-periodic SRS measurement.

[0005] This shows that the existing communication system does not provide sufficient support for frequency hopping and has poor flexibility. Summary of the invention

[0006] The present application provides a method for sending a reference signal, which can support multiple frequency hopping modes, thereby improving the flexibility of frequency hopping.

[0007] In a first aspect, the present application provides a method for sending a sounding reference signal SRS, the method comprising: a terminal device receives first configuration information of an SRS resource from a network device, the first configuration information comprising a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number N of SRS resources mapped to the same subcarrier and mapped to at least one continuous symbol within a time unit, N ≥ 1 and is an integer; the terminal device determines, based on the first configuration information, at least one first frequency domain resource mapped to the SRS resource within the first time unit; the terminal device sends the SRS to the network device in the at least one first frequency domain resource.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the terminal device determines at least one first frequency domain resource mapped to the SRS resource within the first time unit based on the first configuration information, including: the terminal device determines at least one second frequency domain resource of the SRS resource within the first time unit based on the first configuration information and the second configuration information, and the second frequency domain resource is a part of the first frequency domain resource; and the terminal device sends the SRS to the network device in the at least one first frequency domain resource, including: the terminal device sends the SRS to the network device in the at least one second frequency domain resource.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter, the SRS bandwidth parameter being used to determine the bandwidth occupied by the second frequency domain position, and the SRS bandwidth position parameter being used to determine the position of the bandwidth corresponding to the second frequency domain resources in the bandwidth corresponding to the first frequency domain resources.

[0010] In combination with the first aspect, in some implementations of the first aspect, the bandwidth corresponding to the second frequency domain resource is a user-level configuration parameter C SRS A bandwidth in the configured SRS bandwidth set.

[0011] In combination with the first aspect, in some implementations of the first aspect, the first configuration information further includes the number of symbols that the SRS resource can occupy in one time unit. is a positive integer, and the terminal device determines at least one first frequency domain resource mapped by the SRS resource within the first time unit according to the first configuration information, including: the terminal device determines at least one third frequency domain resource mapped by the SRS resource within the first time unit according to the first configuration information and the third configuration information, and the at least one third frequency domain resource is a subset of the set consisting of the at least one first frequency domain resource in one or more of the time units; and the terminal device sends the SRS to the network device at the at least one first frequency domain resource, including: the terminal device sends the SRS to the network device at the at least one third frequency domain position.

[0012] In combination with the first aspect, in some implementations of the first aspect, the third configuration information is used to indicate the number of reference symbols. The number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in a first time unit, wherein Greater than Is a positive integer.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the third configuration information is used to configure at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth frequency domain resource only includes one first frequency domain resource.

[0014] In combination with the first aspect, in some implementations of the first aspect, the SRS resource is a non-periodic SRS resource, the total bandwidth to be measured is composed of K non-overlapping SRS bandwidths, and the terminal device sends the SRS to the network device in the at least one first frequency domain resource, including: if the is less than K·N, the terminal device sends the SRS on each first frequency domain resource in the at least one first frequency domain resource, and does not send the SRS on a time unit other than the first time unit; or, if the is greater than the K·N, the terminal device sends the SRS on the first K·N symbols of the SRS resource.

[0015] In combination with the first aspect, in some implementations of the first aspect, a frequency interval between a first frequency domain position of a bandwidth occupied by the at least one first frequency domain resource and a first frequency domain position of the total bandwidth to be measured is not greater than a first threshold value, and / or a frequency interval between a second frequency domain position in the at least one first frequency domain resource and a second frequency domain position of the total bandwidth to be measured is not greater than a second threshold value, and the first threshold value is determined according to at least one of the following parameters: the K, the The N, the total bandwidth to be measured and the user-level SRS bandwidth, and / or the second threshold value are determined according to at least one of the following parameters: the K, the The N, the total bandwidth to be measured and the user-level SRS bandwidth.

[0016] Here, the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain position of the subcarrier with the lowest, highest or center frequency in the bandwidth occupied by the at least one first frequency domain resource, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the lowest, highest or center frequency. The second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain position of the subcarrier with the highest, lowest or center frequency in the bandwidth occupied by the at least one first frequency domain resource, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the highest, lowest or center frequency.

[0017] Similarly, the first frequency domain position of the total bandwidth to be measured may be the frequency domain position of the subcarrier with the lowest, highest or center frequency in the total bandwidth to be measured, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the lowest, highest or center frequency. The second frequency domain position of the total bandwidth to be measured may be the frequency domain position of the subcarrier with the highest, lowest or center frequency in the total bandwidth to be measured, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the highest, lowest or center frequency.

[0018] In combination with the first aspect, in some implementations of the first aspect, a frequency interval between third frequency domain positions of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: the K, the The N, the total bandwidth to be measured and the user-level SRS bandwidth.

[0019] In an embodiment of the present application, the third frequency domain position may be any frequency domain position of the bandwidth occupied by the first frequency domain resource. For example, the frequency domain position of the lowest frequency subcarrier, the frequency domain position of the highest frequency subcarrier, the frequency domain position of the center frequency subcarrier, or the frequency domain position of any subcarrier. Taking the frequency domain position of the lowest frequency subcarrier as an example, that is to say, the frequency interval between the frequency domain positions of the lowest frequency subcarriers of two adjacent first frequency domain resources is not greater than the third threshold value.

[0020] In combination with the first aspect, in some implementations of the first aspect, the starting symbol of the SRS resource in a time unit, the number of symbols occupied by the SRS resource in a time unit The repetition factor of the SRS resource is jointly encoded.

[0021] In combination with the first aspect, in some implementations of the first aspect, the SRS resource is a non-periodic SRS resource, and the method further includes: if K is not equal to The terminal device does not send the SRS on the SRS resource within the first time unit; or, if K is greater than The terminal device does not send the SRS on the SRS resource within the first time unit; or, if K is less than Then the terminal device does not send the SRS on the SRS resource within the first time unit.

[0022] In combination with the first aspect, in some implementations of the first aspect, the repetition factor of the SRS resource includes 1, 2 and 4.

[0023] In combination with the first aspect, in some implementations of the first aspect, the first time unit is a time slot, a subframe, a mini time slot, or a transmission time interval TTI.

[0024] In a second aspect, the present application provides a method for receiving a sounding reference signal SRS, the method comprising: a network device sends first configuration information of an SRS resource to a terminal device, the first configuration information comprising a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number N of SRS resources mapped to the same subcarrier and mapped to at least one continuous symbol within a time unit, N ≥ 1 and is an integer; the network device receives the SRS sent by the terminal device in at least one first frequency domain resource, wherein the at least one first frequency domain resource is the frequency domain resource of the SRS sent determined by the terminal device according to the first configuration information.

[0025] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: the network device sends second configuration information to the terminal device, so that the terminal device determines at least one second frequency domain resource based on the first configuration information and the second configuration information, the second frequency domain resource is part of the bandwidth of the first frequency domain resource; and the network device receives the SRS sent by the terminal device in at least one first frequency domain resource, including: the network device receives the SRS sent by the terminal device in the at least one second frequency domain resource.

[0026] In combination with the second aspect, in certain implementations of the second aspect, the second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter, the SRS bandwidth parameter is used to determine the bandwidth occupied by the second frequency domain resources, and the SRS bandwidth position parameter is used to determine the position of the bandwidth corresponding to the second frequency domain resources in the bandwidth corresponding to the first frequency domain resources.

[0027] In conjunction with the second aspect, in some implementations of the second aspect, the bandwidth corresponding to the second frequency domain resource is a user-level configuration parameter C SRS A bandwidth in the configured SRS bandwidth set.

[0028] In conjunction with the second aspect, in some implementations of the second aspect, the first configuration information further includes the number of symbols that the SRS resource can occupy in one time unit. is a positive integer, and the method further includes: the network device sends third configuration information to the terminal device, so that the terminal device determines at least one third frequency domain resource according to the first configuration information and the third configuration information, and the at least one third frequency domain resource is a subset of the set consisting of the at least one first frequency domain resource within one or more time units; and the network device receives the SRS sent by the terminal device in the at least one first frequency domain resource, including: the network device receives the SRS sent by the terminal device in the at least one third frequency domain resource.

[0029] In conjunction with the second aspect, in some implementations of the second aspect, the third configuration information is used to indicate the number of reference symbols. The number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, wherein the Greater than And the Is a positive integer.

[0030] In combination with the second aspect, in certain implementations of the second aspect, the third configuration information is used to configure at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth frequency domain resource only includes one first frequency domain resource.

[0031] In combination with the second aspect, in some implementations of the second aspect, the SRS resource is a non-periodic SRS resource, the total bandwidth to be measured corresponds to K non-overlapping frequency resources, the bandwidth of the frequency resources is the SRS bandwidth, and the network device receives the SRS sent by the terminal device in at least one first frequency domain resource, including: if is less than K·N, the terminal device sends the SRS on each first frequency domain resource in the at least one first frequency domain resource, and does not send the SRS on a time unit other than the first time unit; or is greater than K·N, the terminal device sends the SRS on the first K·N symbols of the SRS resource.

[0032] In combination with the second aspect, in some implementations of the second aspect, a frequency interval between a lowest first frequency domain resource in the at least one first frequency domain resource and a lowest frequency of the total bandwidth to be measured is not greater than a first threshold value, and / or a frequency interval between a highest frequency domain position in the at least one first frequency domain resource and a highest frequency of the total bandwidth to be measured is not greater than a second threshold value, and the first threshold value and the second threshold value are determined according to at least one of the following parameters: K, N, the total bandwidth and user-level SRS bandwidth to be measured.

[0033] In combination with the second aspect, in some implementations of the second aspect, a frequency interval between two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: K, N, the total bandwidth and user-level SRS bandwidth to be measured.

[0034] In conjunction with the second aspect, in certain implementations of the second aspect, the starting symbol of the SRS resource in a time unit, the number of symbols occupied by the SRS resource in a time unit, It is jointly encoded with the repetition factor of the SRS resource.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, the SRS resource is a non-periodic SRS resource, and the method further includes: if K is not equal to The network device fails to receive the SRS in the first time unit; or, if K is greater than The network device fails to receive the SRS in the first time unit; or, if K is less than The network device cannot receive the SRS in the first time unit.

[0036] In combination with the second aspect, in some implementations of the second aspect, the repetition factor of the SRS resource includes 1, 2 and 4.

[0037] In combination with the second aspect, in some implementations of the second aspect, the first time unit is a time slot, a subframe, a mini time slot, or a transmission time interval TTI.

[0038] In a third aspect, the present application provides a terminal device, which has the functions of implementing the terminal device in the method design of the first aspect. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0039] In a fourth aspect, the present application provides a network device, which has the functions of implementing the network device in the method design of the second aspect. These functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0040] In a fifth aspect, the present application provides a terminal device, the terminal device comprising a transceiver, a processor and a memory. The processor is used to control the transceiver to send and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the terminal device executes the method in the first aspect above.

[0041] In a sixth aspect, the present application provides a network device, the network device comprising a transceiver, a processor and a memory. The processor is used to control the transceiver to receive and transmit signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the network device executes the method in the second aspect.

[0042] In a seventh aspect, the present application provides a communication device, which may be a terminal device in the above method design, or a chip set in the terminal device. The communication device includes: a memory for storing computer executable program code; a communication interface, and a processor, the processor is coupled to the memory and the communication interface. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device executes the method executed by the terminal device in any possible design of the first aspect or the second aspect.

[0043] In an eighth aspect, the present application provides a communication device, which includes: the communication device can be a network device in the above method design, or a chip set in the network device. The communication device includes: a memory for storing computer executable program code; a communication interface, and a processor, the processor is coupled to the memory and the communication interface. The program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device executes the method executed by the network device in any possible design of the first aspect or the second aspect.

[0044] In a ninth aspect, the present application provides a computer program product, which includes: a computer program code, and when the computer program code is run on a computer, the computer executes the methods in the above aspects.

[0045] In a tenth aspect, a computer-readable medium is provided, wherein the computer-readable medium stores a program code, and when the computer program code runs on a computer, the computer executes the methods in the above aspects.

[0046] In the eleventh aspect, the present application provides a chip system, which includes a processor for a terminal device to implement the functions involved in the above aspects, for example, receiving or processing the data and / or information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0047] In a twelfth aspect, the present application provides a chip system, which includes a processor for supporting a network device to implement the functions involved in the above aspects, for example, sending or processing the data and / or information involved in the above methods. In a possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0048] In an embodiment of the present application, the network device can support multiple frequency hopping modes by configuring the repetition factor of the SRS resources. For example, it can support frequency hopping between time slots, frequency hopping between time slots and on each symbol within a time slot, frequency hopping between time slots and between every two symbols within a time slot, frequency hopping of periodic or semi-persistent SRS resources and non-periodic SRS, etc., which can improve the flexibility of frequency hopping. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 The wireless communication system 100 is applicable to the embodiment of the present application.

[0050] Figure 2 It is a schematic interaction diagram of sending a reference signal according to an embodiment of the present application.

[0051] Figure 3 is a schematic diagram of the repetition factor of the SRS resource.

[0052] Figure 4 This is a schematic diagram of the terminal device sending SRS later.

[0053] Figure 5 It is a schematic diagram of determining the second frequency domain resources in an embodiment of the present application.

[0054] Figure 6 It is a schematic diagram of determining the third frequency domain resources in an embodiment of the present application.

[0055] Figure 7 It is a schematic diagram of a terminal device sending SRS.

[0056] Figure 8 is another schematic diagram of a terminal device sending an SRS.

[0057] Fig. 9 It is a frequency hopping pattern under a configuration of an embodiment of the present application.

[0058] Fig.10 It is a frequency hopping pattern under another configuration of an embodiment of the present application.

[0059] Fig.11 It is a frequency hopping pattern under one configuration.

[0060] Fig.12 It is a frequency hopping pattern in another configuration.

[0061] Fig.13 It is a frequency hopping pattern under a configuration of an embodiment of the present application.

[0062] Fig.14 It is a frequency hopping pattern under another configuration of an embodiment of the present application.

[0063] Fig.15 It is a frequency hopping pattern under a configuration of an embodiment of the present application.

[0064] Fig.16 It is a frequency hopping pattern under another configuration of an embodiment of the present application.

[0065] Fig.17 A schematic block diagram of a terminal device 500 according to an embodiment of the present application.

[0066] Fig.18 A schematic block diagram of a network device 600 according to an embodiment of the present application.

[0067] Fig.19 This is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application.

[0068] Fig. 20 A schematic structural diagram of a network device 800 according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0070] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0071] Figure 1 The wireless communication system 100 is applicable to the embodiment of the present application. The communication system 100 may include at least one network device 101, and the network device 101 and one or more terminal devices (for example, Figure 1The network device 101 may be a base station, or a device in which a base station and a base station controller are integrated, or other devices having similar communication functions.

[0072] The wireless communication systems mentioned in the embodiments of the present application include but are not limited to: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, next generation communication system (e.g., fifth-generation (5G) communication system), a fusion system of multiple access systems, or an evolution system, the three major application scenarios of the next generation 5G mobile communication system, eMBB, URLLC and eMTC, or new communication systems that will appear in the future.

[0073] The network device 101 involved in the embodiment of the present application can be any device with a wireless transceiver function or a chip that can be set in the device. The device includes but is not limited to: a base station (for example, a base station NodeB, an evolved base station eNodeB, a network device in a fifth generation (5G) communication system (for example, a transmission point (TP), a transmission reception point (TRP), a base station, a small base station device, etc.), a network device in a future communication system, an access node in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, etc.

[0074] The terminal devices involved in the embodiments of the present application (for example Figure 1The terminal device 102 in the embodiment may include various access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication devices, user agents or user devices with wireless communication functions. For example, it may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a machine type communication (MTC) terminal, a customer premise equipment (CPE), a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present application do not limit the application scenarios. In the present application, the aforementioned terminal devices and chips that can be set in the aforementioned terminal devices are collectively referred to as terminal devices.

[0075] In order to facilitate understanding of the solution, some concepts involved in the embodiments of the present application are first briefly introduced.

[0076] SRS resources refer to resources configured by the network device for the terminal device for sending the sounding reference signal SRS. In an embodiment of the present application, the terminal device uses a time unit as the unit for sending SRS to the network device. The network device configures SRS resources for the terminal device, including the configuration of frequency domain resources, time domain resources, and code domain resources. The embodiment of the present application mainly involves the configuration of time domain resources and frequency domain resources. Optionally, SRS resources can be understood as a set of SRS resource configurations.

[0077] The time unit mentioned in the embodiment of the present application may be a subframe, a time slot, a mini time slot, or a transmission time interval (TTI), and the first time unit is an example of a time unit. Alternatively, the first time unit may also be understood as a time unit that currently needs to transmit the SRS.

[0078] The total bandwidth to be measured: represents the frequency hopping range, which is a user-level configuration parameter C SRS One of the configured bandwidth sets. In this application, it is denoted as b hop .

[0079] In addition, the "total bandwidth to be measured includes K non-overlapping frequency resources" and "total number of hops K" described in the embodiments of the present application are actually describing the total bandwidth to be measured from different perspectives. In other words, only after K hops of frequency hopping can the entire total bandwidth to be measured be covered and measured, and each hop corresponds to the bandwidth occupied by one frequency resource among the K non-overlapping frequency resources. Moreover, the bandwidth occupied by each frequency resource in the K non-overlapping frequency resources is one SRS bandwidth.

[0080] User-level configuration parameters C SRS : Used to configure a bandwidth set, which includes multiple SRS bandwidths.

[0081] User-level configuration bandwidth B SRS :It is the C SRS An SRS bandwidth in the configured bandwidth set.

[0082] The SRS bandwidth refers to the bandwidth used to transmit the SRS in one symbol.

[0083] For the meaning of these parameters, please refer to the relevant description in LTE. SRS is a cell-level configuration parameter, while in NR, C SRS is a user-level configuration parameter.

[0084] In addition, two concepts that are easily confused in the embodiments of the present application are briefly distinguished. One is the number of symbols that the SRS resource can occupy within a period of time. One is how many symbols the terminal device sends SRS to the network device in one time unit. The former can be considered as the configuration of the network device. The terminal device can use the configuration of the network device to send SRS. At this time, the number of symbols used by the terminal device when sending SRS is the same as Alternatively, the terminal device may also use only part of the SRS resources configured by the network device (for example, part of the frequency domain resources or part of the time domain resources) to send the SRS. In this case, the number of symbols used by the terminal device when sending the SRS is the same as Not equal, for example, may be less than

[0085] In addition, the numbers "first", "second", etc. that appear in the embodiments of the present application are only for distinguishing different description objects, for example, to distinguish different frequency domain resources (for example, first frequency domain resources, second frequency domain resources), threshold values ​​(for example, first threshold value, second threshold value and third threshold value) or configuration information, etc., and should not constitute a limitation on the technical solution of the embodiments of the present application.

[0086] See also Figure 2 , Figure 2 It is a schematic interaction diagram of sending a reference signal according to an embodiment of the present application.

[0087] This article takes a sounding reference signal (SRS) as an example to illustrate the technical solution of the embodiment of the present application. The technical solution of the present application can also be used in scenarios of other reference signal transmission for channel measurement.

[0088] 210. The network device sends first configuration information of the SRS resource to the terminal device. The terminal device receives the first configuration information of the SRS resource from the network device.

[0089] The first configuration information of the SRS resource is used to indicate the time domain parameters configured by the network device for the SRS resource. Specifically, these time domain parameters include time domain parameters at the time slot level and time domain parameters at the symbol level.

[0090] For periodic or semi-persistent SRS resources, the time domain parameters at the time slot level include the period and time domain offset of the SRS resources.

[0091] For non-periodic SRS resources, the time domain parameters at the time slot level include the time domain offset of the SRS resources, or the minimum value of the time domain offset.

[0092] Considering that NR supports different subcarrier spacing and a larger carrier frequency range. In addition, the channel changes at different carrier frequencies. For example, the channel changes faster at high frequencies and slower at low frequencies. In addition, the time slot length is different for different subcarrier spacing. Therefore, the absolute time length corresponding to the same time slot level period is also different. For example, the time length of a 15KHz time slot can be 4 times the time length of a 60KHz time slot.

[0093] In order to take into account the measurement requirements of the terminal device for carrier frequency and subcarrier spacing, the following three configuration schemes are proposed in the embodiments of the present application (hereinafter referred to as Scheme A, Scheme B and Scheme C respectively).

[0094] Plan A

[0095] Supports a larger configurable period range.

[0096] In solution A, the network device can configure the slot-level parameters of the SRS resource according to Table 1. Compared with the period configuration of only 2 to 320 ms supported in LTE, the configuration of 640 slots and 1280 slots is increased, and the network device can configure a larger slot-level period for a larger subcarrier spacing.

[0097] Table 1

[0098]

[0099]

[0100] Alternatively, the case where the period is 2 may not be included, see Table 2.

[0101] Table 2

[0102]

[0103] Alternatively, some cycles include multiple time offsets, see Table 3, and the remaining parts of Table 3 are not limited.

[0104] Table 3

[0105]

[0106]

[0107] Plan B

[0108] Different subcarrier spacings correspond to different configuration tables, or a group of subcarrier spacings corresponds to a group of configuration tables.

[0109] For example, 15 KHz corresponds to a period of 2 to 320 time slots, and 60 KHz corresponds to a period of 10 to 1280 time slots. See Table 4 and Table 5.

[0110] Table 4

[0111]

[0112] Table 5

[0113]

[0114] Alternatively, the case where the period is 2 may not be included. Alternatively, a plurality of offsets may be included in one period.

[0115] Plan C

[0116] Different carrier frequencies correspond to different configuration tables. For example, Table 4 and Table 5 in Solution B are for frequencies below 6 GHz and above 6 GHz, respectively. Alternatively, different carrier frequencies correspond to different cycle units. For example, the tables in Solution A and Solution B use time slots as the unit of cycle. In Solution C, the unit of cycle below 6 GHz is k=2 μ The period above 6GHz carrier frequency is time slots k = 2 μ-2 Wherein, μ is the index of the subcarrier spacing. See Table 6.

[0117] Table 6

[0118]

[0119] Alternatively, the case where the period is 2 may not be included, or a plurality of offsets may be included in one period.

[0120] In addition, for non-periodic SRS resources, the network device may configure or predefine the time interval or the minimum time interval between the PDCCH carrying the DCI or the control resource set (Control Resource Set, CORESET) and the SRS resources.

[0121] For ease of explanation, the time slot where the PDCCH or CORESET carrying the DCI is located is recorded as time slot m, and the time slot where the SRS resource is located is recorded as time slot n, where m≤n, and m and n are positive integers.

[0122] Specifically, the unit of the cycle may be any of the following optional cases.

[0123] (1) The time slot level interval between time slot m and time slot n.

[0124] (2) The symbol-level interval between the symbol of the PDCCH or CORESET carrying the DCI and the first or last symbol of the SRS resource in time slot n.

[0125] For case (2), optionally, there is no need to configure the starting symbol of the SRS resource.

[0126] Optionally, the optional value of the symbol level interval has a certain range to ensure that the SRS resource is mapped to the symbol where the SRS can be sent, such as the last 6 symbols of time slot n.

[0127] (3) The time interval is configured by the network device, and the time interval has a minimum value, which can be predefined. For example, the minimum value can be predefined as 4 time slots. Alternatively, the terminal device can report the minimum value to the network device based on its own measurement capability. Optionally, the network device can select a time interval from some candidate values ​​and configure it to the terminal device.

[0128] (4) The terminal device may report at least one of the following: a time interval, a minimum value of the time interval, and a candidate value of the time interval.

[0129] (5) The network device configures the time interval for the SRS resource.

[0130] Optionally, the network device configures a time interval for an SRS resource set where the SRS resource is located. When a terminal device sends an SRS resource in an SRS resource set, the time interval of the SRS resource set is used. At this time, optionally, the network device may not need to configure the time interval information of each SRS resource in the SRS resource. Alternatively, the terminal device jointly determines the time interval between the transmission of the DCI and SRS resources based on the time interval of the SRS resource set and the time interval of the SRS resource (for example, the sum of the two). The time interval of the SRS resource set and / or the SRS resource can be determined based on the identifier of the SRS resource set or the identifier of the SRS resource. For example, the time interval is equal to the identifier value or the sum of the identifier value and a certain offset value.

[0131] The terminal device determines the time domain resources of the SRS resources according to the symbol or time slot where the PDCCH or CORESET carrying the DCI is located and the time interval. For example, the terminal device determines m as the sum of n and the time domain interval. For another example, the terminal device determines the time domain resources of the SRS resources according to the sum of the symbol where the PDCCH or CORESET carrying the DCI is located and the time domain interval.

[0132] Optionally, the DCI may be used to trigger at least one SRS resource, or may be used to trigger at least one SRS resource set. When used to trigger an SRS resource set, the DCI includes information indicating an SRS resource set identifier or an identifier indicating an SRS resource set.

[0133] Optionally, the above method for determining the time domain interval for a non-periodic SRS may also be used for a semi-persistent SRS.

[0134] Semi-persistent SRS means that the transmission of SRS can be activated (activated) by DCI or MAC CE trigger, and the transmission of SRS can be deactivated (deactivated) by DCI or MAC CE trigger. Alternatively, the transmission of SRS can be activated (activated) by DCI or MAC CE trigger, and deactivated after a period of time. This period of time can be specified by the protocol (no base station configuration is required, local pre-stored or pre-configured) or can be configured by the base station. Alternatively, it can also be activated after a period of time after receiving the configuration information, and deactivated by DCI or MAC CE trigger, or deactivated after a period of time. The period between receiving the configuration information and activation can be specified by the protocol (no base station configuration is required, local pre-stored or pre-configured) or can be configured by the base station, and the period between activation and deactivation can also be specified by the protocol (no base station configuration is required, local pre-stored or pre-configured) or can be configured by the base station.

[0135] Similar to the method for determining the time domain interval of non-periodic SRS, the base station configures or predefines the first time interval and / or the second time interval. The first time interval is the time interval or the minimum time interval between the PDCCH or PDSCH where the DCI for activating the semi-persistent SRS resource is located, or the CORESET or MAC CE is located, and the semi-persistent SRS resource. For example, the terminal device can start transmission at the first transmission opportunity of the semi-persistent SRS after the time interval, and the transmission opportunity is determined according to the time domain configuration information of the semi-persistent SRS. The second time interval is the time interval between the PDCCH or PDSCH where the DCI for deactivating the semi-persistent SRS resource is located, or the CORESET or MAC CE is located, and the stop transmission of the semi-persistent SRS resource or the last transmission of the SRS resource. For example, the terminal device can stop transmitting the semi-persistent SRS after the time interval.

[0136] Optionally, the configuration method and reporting method of the specific time interval are the same as the non-periodic SRS resources.

[0137] Optionally, the DCI or MAC CE can be used to activate or deactivate triggering at least one semi-persistent SRS resource, and can also be used to activate or deactivate at least one semi-persistent SRS resource set. When used to activate or deactivate a semi-persistent SRS resource set, the DCI or MAC CE contains information for indicating a semi-persistent SRS resource set identification or an identifier for indicating an SRS resource set, an identifier of a semi-persistent SRS resource set in all semi-persistent SRS resource sets or all SRS resource sets, or is supported in the form of a bitmap. Each bit in the bitmap corresponds to a semi-persistent SRS resource set, and the length of the bitmap is not less than the number of configured semi-persistent SRS resource sets, or is equal to the number of semi-persistent SRS resource sets or the maximum number.

[0138] Optionally, some rows or some columns in the table in the above solution can be used separately, or at least some rows or at least some columns can be used as part of a complete configuration table, which is not limited here.

[0139] The symbol-level time domain parameters of the SRS resource are introduced below.

[0140] In the embodiment of the present application, the symbol-level time domain parameters of the SRS resource mainly include the following:

[0141] (1) The starting symbol of the SRS resource in a time slot.

[0142] Since SRS is generally configured on the last M symbols in a time slot, the starting symbol of the SRS resource in a time slot is located on the last M symbols in a time slot. For example, if the starting symbol of the SRS resource in a time slot is located on the last 6 symbols of the time slot, the starting symbol position of the SRS resource in the time slot is the last 6 symbols.

[0143] (2) The number of symbols of SRS resources.

[0144] The number of symbols of the SRS resource, that is, the number of symbols occupied by the SRS resource in a time slot (hereinafter referred to as ), Is a positive integer.

[0145] (3) Repetition factor of SRS resources.

[0146] In the embodiment of the present application, the repetition factor of the SRS resource refers to the number N of SRS resources mapped to the same subcarrier and to at least one continuous symbol in a time slot, where N≥1 and is an integer.

[0147] For the sake of simplicity in description, the repetition factor of the SRS resource is denoted as Lr below. That is, Lr=N.

[0148] In the embodiment of the present application, the repetition factor may also be referred to as the repetition length.

[0149] See also Figure 3 , Figure 3 It is a schematic diagram of the repetition length of the SRS resource. Figure 3 In the example, the number of symbols of the SRS resource is 4. Figure 3 In (A), the repetition length of the SRS resource is equal to 1. Figure 3 As shown in (B) in FIG. 8 , the repetition length of the SRS resource is equal to 2. Figure 3 As shown in (C) in FIG. 8 , the repetition length of the SRS resource is equal to 4.

[0150] It is understandable that the above-mentioned starting symbol of the SRS resource in a time slot, the number of symbols of the SRS resource and the repetition length of the SRS resource satisfy some constraints. For example, the starting symbol of the SRS resource in a time slot determines the maximum number of symbols of the SRS resource. For example, if the starting position of the SRS resource in a time slot is the last symbol in this time slot, the number of symbols of the SRS resource can only be equal to 1. For another example, the number of symbols of the SRS resource determines the repetition length of the SRS resource. In other words, the repetition length of the SRS resource will not exceed the number of symbols of the SRS resource.

[0151] If the number of symbols included in a time slot is recorded as N, and the index of the symbol in the time slot is 0 to N-1. N is a positive integer. Then these constraints can be expressed as:

[0152] (1) The maximum value of the starting symbol of SRS is not greater than NM.

[0153] (2) The sum of the number of symbols of the SRS resource and the starting symbol of the SRS resource is not greater than N-1.

[0154] Optionally, the number of symbols of the SRS resource can be equal to 1, 2 or 4.

[0155] Optionally, the repetition factor of the SRS resource can be equal to 1, 2 or 4.

[0156] Furthermore, considering these constraints, the present application proposes to jointly encode the above three symbol-level time domain parameters of the SRS resources to reduce resource overhead.

[0157] It is understandable that the starting symbol of the SRS resource, the number of symbols of the SRS resource and the repetition factor of the SRS resource can be jointly encoded by the network device and sent to the terminal device through a signaling. For example, this signaling can be the first configuration information in the embodiment of the present application.

[0158] Table 7 of joint coding is given below, taking M=6 as an example.

[0159] Table 7

[0160]

[0161] As an optional solution, the repetition length of the SRS resource can also be configured separately, see Table 8 below.

[0162] Table 8

[0163]

[0164] In addition, the repetition length of the SRS resource is configured as shown in Table 9.

[0165] Table 9

[0166] SRS resource repetition length configuration SRS resource repetition length Lr 00 1 01 2 10 4 11 reserved

[0167] Optionally, some rows or some columns in the table in the above solution can be used separately, or at least some rows or at least some columns can be used as part of a complete configuration table, which is not limited here.

[0168] 220. The terminal device determines, based on the time domain configuration information of the SRS resource, that the SRS resource is mapped to one less first frequency domain position within the first time unit.

[0169] For non-periodic SRS resources, time domain configuration information of the SRS resources may be carried by downlink control information (Downlink Control Information, DCI).

[0170] If the time slot in which the terminal device receives the downlink control information is time slot n, the terminal device can send the SRS to the network device in time slot n+k, where k is the time domain offset of the SRS resource, and n and k are positive integers.

[0171] If the symbol configured for sending SRS on time slot n+k cannot send SRS, for example, the SRS resource is configured on the same symbol as PUCCH or PUSCH, or the Slot Format Indicator (SFI) indicates that the SRS resource is a downlink resource or an unknown resource, the terminal device sends SRS on the symbol at the same position in time slot n+k+1. Figure 4 , Figure 4 It is a schematic diagram of a terminal device deferring the sending of SRS.

[0172] Further, if the symbol configured for sending SRS in time slot n+k+1 continues to be unable to send SRS, the terminal device sends SRS in time slot n+k+2, and so on.

[0173] However, in order to prevent multiple postponements of SRS transmission, the network device may preconfigure the maximum time-domain and frequency-domain amount t (t>0 and an integer) for transmitting SRS, that is, if the SRS triggered by the DCI on time slot n is not transmitted in the time slot after time slot n+t.

[0174] The time domain offset t may be configured by high-level signaling and / or DCI of the network device. Alternatively, t may also be predefined.

[0175] The following describes a process in which a terminal device determines, according to first configuration information, at least one first frequency domain resource mapped to an SRS resource within a first time unit.

[0176] For ease of understanding, we take one time unit as one time slot as an example for description below.

[0177] Specifically, the terminal device determines the count n of sending the SRS according to the first configuration information of the SRS resource and the current time slot. SRS , and then according to n SRS Determine the frequency domain resource mapped by the SRS resource in the current time slot (referred to as the first frequency domain resource in this application, the bandwidth of the first frequency domain resource is the SRS bandwidth, and is determined by B SRS configuration).

[0178] The following describes periodic (including semi-persistent) SRS resources and non-periodic SRS resources respectively.

[0179] 1. Periodic or semi-continuous SRS resources.

[0180] For periodic or semi-persistent SRS resources, n SRS Represents the count of the positions available for SRS transmission on the same subcarrier in consecutive symbols within a radio frame period. SRS It can be calculated and determined according to the following parameters: system frame number, time slot number, symbol number (ie, symbol index), starting symbol of SRS resource, number of symbols of SRS resource and repetition factor of SRS resource.

[0181] Specifically, n SRS It can be calculated according to the following formula (1):

[0182]

[0183] The physical meanings of the parameters in formula (1) are as follows: Indicates the number of symbols of SRS resources; n indicates the system frame number; Indicates the time slot number; n s Indicates the time slot number within the frame; T SRS Indicates the period of SRS resources; n symbol Indicates the symbol number in the time slot; Indicates the starting symbol of the SRS resource in a time slot (hereinafter referred to as the starting symbol of the SRS resource); Lr indicates the repetition factor of the SRS resource. Symbol Indicates rounding down.

[0184] in The number of symbols representing the difference between the symbol in the time slot and the starting symbol of the SRS resource can be used as a separate variable or obtained by other expressions, for example, according to the symbol number in the subframe or frame, the starting symbol of the SRS resource, the subframe number, etc.

[0185] in It represents the sequence number of the current time slot in all time slots that can be used to send the SRS within a frame period, and can also be calculated by other equivalent expressions. represents the sum of the number of symbols of the SRS sent by all users up to the current time slot within a frame period, and can also be calculated by other equivalent expressions.

[0186] Optionally, n in formula (1) SRS It can be a calculation method in one case, and it does not exclude that the n is calculated according to other formulas in other cases. SRS .

[0187] 2. Non-periodic SRS resources.

[0188] (1) If the non-periodic SRS resource only supports frequency hopping within a time slot.

[0189] In this case, n SRS Indicates the count of the number of transmission positions of the SRS resource triggered this time on the same subcarrier in consecutive symbols. SRS It can be calculated and determined based on the following parameters: the starting symbol of the SRS resource in a time slot, the symbol number and the repetition factor of the SRS resource (denoted as L r ).

[0190] Specifically, n SRS It can be calculated according to the following formula (2):

[0191]

[0192] Optionally, the number of symbols transmitted by the SRS is the minimum value of the number of symbols of the SRS resource and the product of the total number of hops and the repetition factor. When the number of hops is less than the product of the total number of hops and the repetition factor K·N, only the number of symbols of the SRS resource is sent The SRS resource does not complete the transmission of all hops. When it is greater than the product of the total hop count and the repetition factor K·N, SRS is transmitted only in K·N symbols of the SRS resource, and the remaining symbols in the SRS resource are not used for the SRS transmission. Optionally, it can be used for transmission of other uplink channels (e.g., PUSCH), or not for transmission, or for transmission of other SRS.

[0193] in The number of symbols representing the difference between the symbol in the time slot and the start symbol of the SRS can be used as a separate variable or obtained by other expressions. For example, it can be determined according to the symbol number in the subframe or frame, the start symbol of the SRS, the subframe number, etc. The time slot mentioned here is determined according to the time interval introduced in the aforementioned step 210 and the resource where the PDCCH or CORESET carrying the DCI for triggering the SRS transmission is located.

[0194] For example, this constraint is expressed as the following formula (3):

[0195]

[0196] Alternatively, this constraint can be expressed as the following formula (4):

[0197]

[0198] (2) If the non-periodic SRS resource supports intra-slot frequency hopping and inter-slot frequency hopping.

[0199] In this case, n SRS Indicates the count of the number of transmission positions of the SRS resource triggered this time on the same subcarrier in consecutive symbols. SRS The calculation can be determined based on the following parameters: the starting symbol of the SRS resource, the number of symbols of the SRS resource, the repetition factor of the SRS resource, the symbol number, the time difference between the triggering DCI and the current time slot, and the time domain offset. The time domain offset mentioned here is the time interval in step 210 above.

[0200] Specifically, n SRS It can be calculated according to the following formula (5):

[0201]

[0202] Here, n SRS The maximum value is the total number of hops.

[0203] in The number of symbols representing the difference between the symbol number in the time slot and the SRS start symbol can be used as a separate variable or obtained by other expressions, for example, according to the symbol number in the subframe or frame, the start symbol of the SRS, the subframe number, etc.

[0204] The time difference between triggering DCI and the current time slot.

[0205] The time slot difference between the first transmission of the non-periodic SRS and the current time slot may be calculated by other equivalent methods.

[0206] The number of all symbols that can be used to transmit the aperiodic SRS from the first transmission of the aperiodic SRS to the current time slot can also be calculated by other equivalent expressions.

[0207] The terminal device determines n SRS After that, we can use n SRS At least one frequency domain resource (referred to as a first frequency domain resource in this application) to which the SRS resource is mapped in the current time slot is determined.

[0208] 230. The terminal device sends an SRS to the network device in the determined at least one first frequency domain resource.

[0209] In step 220, after the terminal device determines at least one first frequency domain resource to which the SRS resource is mapped in the current time slot, in step 230, the terminal device sends the SRS to the network device in the at least one first frequency domain resource.

[0210] Those skilled in the art should understand that the process in which a terminal device sends an SRS to a network device through at least one first frequency domain resource is a frequency hopping process.

[0211] In an embodiment of the present application, the network device can support multiple frequency hopping modes by configuring the repetition factor of the SRS resources. For example, it can support frequency hopping between time slots, frequency hopping between time slots and on each symbol within a time slot, frequency hopping between time slots and between every two symbols within a time slot, frequency hopping of non-periodic SRS, etc., which can improve the flexibility of frequency hopping.

[0212] In the above method 200, the terminal device sends an SRS to the network device in the determined at least one first frequency domain resource.

[0213] Optionally, the terminal device may send SRS on each first frequency domain resource in the at least one first frequency domain resource. Alternatively, in order to reduce the measurement time of the total bandwidth to be measured, the present application further proposes the following frequency hopping methods, so that the terminal device can send SRS on some resource blocks (RBs) of the at least one first frequency domain resource.

[0214] Method 1

[0215] The terminal device determines at least one second frequency domain resource mapped by the SRS resource in the first time unit according to the first configuration information and the second configuration information, wherein the second frequency domain resource is a part of the first frequency domain resource. The terminal device sends the SRS to the network device in the at least one second frequency domain resource.

[0216] In mode 1, in addition to configuring the time slot level time domain parameters and symbol level time domain indicated by the first configuration information described above, the network device also configures the second configuration information. Based on the first configuration information and the second configuration information, the terminal device can determine at least one second frequency domain resource based on at least one first frequency domain resource. Among them, a second frequency domain resource is a part of a first frequency domain resource.

[0217] Optionally, the second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter.

[0218] It should be noted that the SRS bandwidth position parameter is used to determine the bandwidth occupied by the second frequency domain resource. The SRS bandwidth position parameter is used to determine the position of the bandwidth occupied by the second frequency domain resource in the bandwidth occupied by the first frequency domain resource.

[0219] In the following, the SRS bandwidth parameter is denoted as b subband , the SRS bandwidth location parameter is recorded as

[0220] It is understandable that b subband In fact, it configures the actual bandwidth size used by the terminal device when sending SRS. subband The value range is B SRS ≤ b subband ≤3, and b subband The specific value of the configured bandwidth can be obtained by querying the SRS bandwidth configuration table.

[0221] It is used to configure the position of the actual bandwidth when the terminal device sends SRS in the SRS bandwidth. The value range is Assuming that a user-level SRS bandwidth can contain at most k b subband The corresponding bandwidth is The specific value should be k is a positive integer.

[0222] The following is an example of a configuration table applicable to the embodiment of the present application. See Table 10.

[0223] Table 10

[0224]

[0225]

[0226]

[0227] Combine the following Figure 5 Give an example.

[0228] See also Figure 5 , Figure 5 It is a schematic diagram of determining the second frequency domain resources.

[0229] exist Figure 5 In the network device configuration, user-level configuration parameters C SRS =24, B SRS =1. If the network device is configured with b subband =2, Then the terminal device sends the SRS only on one subband of the user-level SRS bandwidth. The subband of the user-level SRS bandwidth is the second frequency domain resource mentioned in the embodiment of the present application.

[0230] The number of resource blocks RB occupied by the second frequency domain resource in the frequency domain is represented by m SRS,subband , mSRS,subband It can be obtained by querying the SRS bandwidth configuration table.

[0231] Understandably, Figure 5 In the example, only one second frequency domain resource is used. When there are at least two second frequency domain resources, the starting frequency domain positions of the at least two second frequency domain resources can be calculated and determined according to the following formula (6):

[0232]

[0233] Optionally, in method 1, and b subband and B SRS The relationship between them can be interchanged. That is, B SRS Used to indicate the actual bandwidth used by the terminal device when sending SRS. subband Used to indicate the user-level SRS bandwidth.

[0234] Method 2

[0235] The terminal device determines, based on the first configuration information and the third configuration information, at least one third frequency domain resource to which the SRS resource is mapped within the first time unit, wherein the set formed by the at least one third frequency domain resource is a subset of the set formed by the at least one first frequency domain resource. The terminal device sends the SRS to the network device in the at least one third frequency domain resource.

[0236] In mode 2, in addition to configuring the first configuration information described above, the network device also configures the third configuration information. Based on the first configuration information and the third configuration information, the terminal device can determine at least one third frequency domain resource on the basis of at least one first frequency domain resource. The set consisting of the at least one third frequency domain resource is a subset of the set consisting of at least one first frequency domain resource in one or more time units.

[0237] In mode 2, the third configuration information can be used to indicate the number of reference symbols.

[0238] In this application, reference numerals Used to determine at least one first frequency domain resource occupied by the SRS resource within a first time unit (for example, a time slot), wherein: And it is an integer.

[0239] It should be noted that the number of reference symbols The value range is greater than or equal to the number of symbols of the SRS resource

[0240] Specifically, in mode 2, for periodic or semi-persistent SRS resources, the terminal device can calculate n according to the following formula (7): SRS :

[0241]

[0242] It can be understood by those skilled in the art that, compared with the above formula (1), formula (7) calculates n SRS In the parameters, the parameters becomes The rest is the same. is the number of symbols that the SRS resource can occupy in a time slot, because The value is greater than In the case of the value of SRS The value of will also be different.

[0243] In other words, according to formula (7), The terminal device actually only hops SRS is sent on symbols. That is, The SRS of the symbols is not sent. Therefore, the terminal device can send the SRS only on part of the first frequency domain resources. The part of the first frequency domain resources mentioned here is the at least one third frequency domain resource mentioned in this application. In other words, the set composed of the at least one third frequency domain resource is actually a subset of the set composed of the at least one first frequency domain resource.

[0244] Combine the following Figure 6 Give an example.

[0245] See also Figure 6 , Figure 6 is a schematic diagram for determining the third frequency domain resources. Figure 6 As shown, if the network device configuration For an SRS resource with 4 symbols, there are 4 first frequency domain positions in a time slot. At this time, the terminal device will send SRS on each first frequency domain resource. The terminal device has a time slot. symbol hopping is calculated, but in practice only The SRS is sent on symbols, and the terminal device can also send the SRS only on part of the RBs.

[0246] It should be understood that for non-periodic SRS resources that only support intra-slot frequency hopping, method 2 is not applicable. For non-periodic SRS resources that support intra-slot frequency hopping and inter-slot frequency hopping, method 2 is applicable. For example, calculate n SRS The formula can be shown as formula (8):

[0247]

[0248] In the embodiment of the present application, for a non-periodic SRS resource, if only frequency hopping within a time slot is supported, when the total number of hops K is greater than the number of symbols of the SRS resource, if only the previous Jump, and forward The ions may not be evenly distributed in the total bandwidth to be measured, thus causing inaccurate measurement of the total bandwidth to be measured.

[0249] It should be noted that, in the embodiment of the present application, the total number of hops corresponding to the total bandwidth to be measured is recorded as K. In other words, the total bandwidth to be measured includes K non-overlapping frequency resources, and the bandwidth of each frequency resource in the K non-overlapping frequency resources is the SRS bandwidth.

[0250] Combine the following Figure 7 The situation where the total hop number is greater than the number of symbols of the SRS resource, resulting in inaccurate measurement of the total bandwidth to be measured, is described.

[0251] Assume that the bandwidth configuration parameters in Table 11 are used.

[0252] Table 11

[0253]

[0254] For example, if the network device is configured with b hop =0, B SRS =3, n RRC = 0, the 4 hops that the terminal device measures for the total bandwidth to be measured may be as follows Figure 7 See Figure 7 , Figure 7 This is a schematic diagram of a terminal device sending SRS. Figure 7 It can be seen that after the terminal device has 4 hops, the frequency hopping pattern is only distributed in the first 3 / 4 of the total bandwidth to be measured.

[0255] For example, if the network device is configured with b hop =0, B SRS =3, n RRC = 0, the 2 hops that the terminal device measures for the total bandwidth to be measured may be as follows Figure 8 See the situation shown in Figure 8 , Figure 8 is another schematic diagram of the terminal device sending SRS. Similarly, after the terminal device has performed 2-hop measurements, the frequency hopping pattern is only distributed in the first 1 / 2 of the total bandwidth to be measured.

[0256] above Figure 7 and Figure 8In the case shown in , for higher frequency bands not covered by the frequency hopping pattern, the channel measurement results can only be obtained by extrapolation, so the accuracy is low.

[0257] Therefore, in view of the problem that occurs when sending SRS using non-periodic SRS resources, the present application proposes some solutions to make the frequency hopping pattern cover the total bandwidth to be measured as evenly as possible, thereby improving the accuracy of the measurement.

[0258] Solution 1

[0259] The frequency interval between the first frequency domain position of the bandwidth occupied by at least one first frequency domain resource and the first frequency domain position of the total bandwidth to be measured is not greater than the first threshold value, and / or the frequency interval between the second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the second frequency domain position of the total bandwidth to be measured is not greater than the second threshold value. The relationship satisfied between the at least one first frequency domain resource and the total bandwidth to be measured is hereinafter referred to as constraint condition 1.

[0260] Here, the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain position of the subcarrier with the lowest, highest or center frequency in the bandwidth occupied by the at least one first frequency domain resource, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the lowest, highest or center frequency. The second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource may be the frequency domain position of the subcarrier with the highest, lowest or center frequency in the bandwidth occupied by the at least one first frequency domain resource, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the highest, lowest or center frequency.

[0261] Similarly, the first frequency domain position of the total bandwidth to be measured may be the frequency domain position of the subcarrier with the lowest, highest or center frequency in the total bandwidth to be measured, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the lowest, highest or center frequency. The second frequency domain position of the total bandwidth to be measured may be the frequency domain position of the subcarrier with the highest, lowest or center frequency in the total bandwidth to be measured, or may be other frequency domain positions adjacent to the frequency domain position of the subcarrier with the highest, lowest or center frequency.

[0262] The first threshold value can be determined according to at least one of the following parameters: K, N, The total bandwidth to be measured and the user-level SRS bandwidth, and / or the second threshold value can also be determined according to at least one of the following parameters: K, N, The total bandwidth and user-level SRS bandwidth to be measured.

[0263] It can be understood that in the design concept of Scheme 1, the frequency interval between the first frequency domain position of the bandwidth occupied by at least one first frequency domain resource and the first frequency domain position of the total bandwidth to be measured should not be greater than the first threshold, and / or the frequency bandwidth between the second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the second frequency domain position of the total bandwidth to be measured should not be greater than the second threshold.

[0264] In other words, constraint condition 1 will ensure that the at least one first frequency domain resource is not distributed only in a part of the total bandwidth to be measured, but covers a larger bandwidth range as much as possible, thereby improving the measurement accuracy.

[0265] Specifically, there are several ways to ensure that the at least one first frequency domain resource determined and the total bandwidth to be measured satisfy constraint condition 1 described in solution 1.

[0266] Method A

[0267] In method A, we assume that to complete the coverage measurement of the total bandwidth to be measured, a total of K frequency hopping times are required. The K frequency hopping times correspond to the frequency hopping tree structure with a total of nodes. Divide these K nodes equally into segments, each of which is separated by nodes, the i-th segment is located at node exist During the frequency hopping process, set the counter flag(i) and the frequency hopping counter NUM i , Initialize flag(i)=0,NUM i =1.

[0268] For the Kth frequency hopping, calculate NUM as follows: k .

[0269] (1) Calculate according to formula (9) The corresponding node (hereinafter referred to as node A) position

[0270]

[0271] (2) Assume that node A is located in segment i, that is If flag(i) = 0, the frequency hopping position is considered to be at node A, and the process goes to step (3). If flag(i) = 1, then NUM k-1 =NUM k +1, return to step (1) to recalculate the frequency hopping position.

[0272] (3) Set flag(i) to 1 and end.

[0273] In addition, in scheme 1, the starting position of the subband for transmitting the SRS is calculated according to the following formula (10):

[0274]

[0275] The frequency hopping pattern determined according to the method of solution 1 is described below by way of example.

[0276] First, assume that the bandwidth configuration shown in Table 12 is used.

[0277] Table 12

[0278]

[0279] If the network device is configured with b hop =0, B SRS =3, n RRC =0, according to the method of solution 1, NUM can be calculated 0 =1, NUM 1 =1, NUM 2 =1, NUM 3 =3. For frequency hopping patterns, see Fig. 9 As shown, Fig. 9 It is a frequency hopping pattern under one configuration of this application.

[0280] If the network device is configured with b hop =0, B SRS =3, n RRC =0, according to the method of solution 1, NUM can be calculated 0 =1, NUM 1 =2. For frequency hopping patterns, see Fig.10 As shown, Fig.10 This is a frequency hopping pattern under another configuration of the present application.

[0281] from Fig. 9 and Fig.10 It can be seen that for In terms of frequency hopping, according to the method provided in Solution 1, it can be ensured that the terminal device sends SRS The frequency domain positions are located at evenly spaced The frequency interval between the lowest frequency subcarrier of the frequency hopping bandwidth and the lowest subcarrier of the SRS resource is not greater than a threshold value (i.e., the first threshold). The frequency interval between the highest frequency subcarrier of the frequency hopping bandwidth and the highest frequency subcarrier of the SRS resource is not greater than a threshold value (in order to distinguish it from the first threshold value, it is recorded as the second threshold value here).

[0282] It is understood that the first threshold value and the second threshold value may be equal or unequal. For example, the first threshold value and the second threshold value may both be equal to That is, the frequency interval between the lowest frequency subcarrier in the total bandwidth to be measured and the lowest frequency subcarrier of the SRS resource is not greater than The user-level SRS bandwidth. Alternatively, the first threshold value and the second threshold value may also be set separately. This embodiment of the present application is not limited.

[0283] Solution 2

[0284] The frequency interval between the third frequency domain positions of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: K, The total bandwidth and user-level SRS bandwidth to be measured.

[0285] Here, the third frequency domain position may be the frequency domain position of the subcarrier with the lowest, highest or center frequency in the bandwidth occupied by the first frequency domain resource, or the frequency domain position of the subcarrier with the highest, lowest or center frequency in the bandwidth occupied by the first frequency domain resource. Alternatively, it may be the frequency domain position of the subcarrier with any frequency between the lowest frequency and the highest frequency.

[0286] In solution 2, we continue to assume that to complete the coverage measurement of the total bandwidth to be measured, a total of K frequency hopping times are required.

[0287] For non-periodic SRS resources, assuming that a time slot needs to be Frequency hopping. The corresponding design within the total bandwidth to be measured SRS mapping subcarrier position The frequency interval between subcarriers mapped to adjacent SRS resources in the frequency domain is denoted as Δf k ,in,

[0288] In an alternative embodiment, the frequency interval Δf k It is based on the number of frequency hopping in a time slot and the total number of hops K, and should make Frequency spacing Δf k Not greater than the third threshold.

[0289] For example, the third threshold value may be user-level bandwidth B SRS , that is |Δf i -Δf j |≤B SRS .

[0290] Option 2 can ensure The frequency domain positions of the secondary frequency hopping are evenly distributed in the total bandwidth to be measured, and the frequency interval between the third frequency domain positions of two adjacent frequency domain resources for sending SRS by the terminal device is substantially equal.

[0291] Optionally, the starting subcarrier for SRS resource mapping may be calculated according to the following formulas (11) to (13):

[0292]

[0293] in,

[0294]

[0295]

[0296] Alternatively, the starting subcarrier for SRS resource mapping may be calculated according to the following formulas (14) and (15):

[0297]

[0298]

[0299] It should be understood that the formula for calculating the frequency domain position of the subcarrier to which the SRS resource is mapped in Solution 2 is not limited to the above formulas, and other forms of formulas may also be used.

[0300] Combine the following Fig.11 and Fig.12 , an example is given to illustrate the frequency hopping pattern determined according to Scheme 2.

[0301] First, assume that the bandwidth configuration shown in Table 13 is adopted.

[0302] Table 13

[0303]

[0304] For example, if the network device is configured with b hop =0, B SRS =3, n RRC = 0, if the formula (11)-(13) is used for calculation, the determined frequency hopping pattern is as follows Fig.11 shown. Fig.11 is an example of a frequency hopping pattern under one configuration. If formulas (14) and (15) are used for calculation, the determined frequency hopping pattern is as follows Fig.12 shown. Fig.12 is another example of a frequency hopping pattern in one configuration.

[0305] from Fig.11 and Fig.12It can be seen that the frequency hopping pattern is determined according to the scheme provided by Scheme 2. After 4 frequency hoppings, the frequency domain position of the SRS sent by the terminal device is more evenly distributed in the entire bandwidth, thereby improving the accuracy of channel measurement.

[0306] For example, if the network device is configured with b hop =0, B SRS =3, n RRC = 0, if the formula (11)-(13) is used for calculation, the determined frequency hopping pattern is as follows Fig.13 shown. Fig.13 is an example of a frequency hopping pattern under one configuration. If formulas (14) and (15) are used for calculation, the determined frequency hopping pattern is as follows Fig.14 shown. Fig.14 is another example of a frequency hopping pattern under a configuration of the present application.

[0307] Method 3

[0308] For the number of symbols equal to The SRS resources of the network device are configured as follows by default:

[0309] (1) The total number of hops K is not equal to or

[0310] (2) The total number of hops K is greater than or

[0311] (3) The total number of hops K is less than

[0312] In other words, the terminal device does not assume that it will receive or assumes that it will not receive the signal sent by the network device indicating that K is not equal to or,

[0313] The terminal device does not assume that it will receive or assumes that it will not receive the signal sent by the network device to indicate that K is greater than or,

[0314] The terminal device does not think that it will receive or assumes that it will not receive the signal sent by the network device indicating that K is less than instructions.

[0315] Based on the default configuration, if K is not equal to or K is greater than or K is less than Then the terminal device does not send SRS on the SRS resources configured in the current time slot.

[0316] It can be understood that, through mode 3, it is possible to measure only part of the RBs of the total bandwidth to be measured, thereby reducing the time for measuring the total bandwidth.

[0317] Method 4

[0318] The terminal device determines the frequency hopping pattern according to the following formulas (16), (17) and (18) to send SRS on part of the RBs.

[0319]

[0320] In mode 4, in order to achieve uniform frequency hopping on some RBs, the network device configures parameter b minhop . b minhop The default setting can be equal to B SRS That is, if the network device is configured with b minhop The terminal device uses b minhop If the network device is not configured with b minhop The value of b minhop Take B SRS For example, according to C SRS The configured bandwidth set determines the bandwidth of the fourth frequency domain resource. According to formula (17), only the bth frequency domain resource in the SRS tree bandwidth structure hop +1~b minhop Layer frequency hopping, and in the bth minhop +1~B SRS There is no frequency hopping on the layer. Therefore, the SRS can be sent only on the partial RB of the bandwidth occupied by each fourth frequency domain resource. The bandwidth corresponding to the partial RB mentioned here is B SRS A bandwidth of the first frequency domain resource is determined.

[0321] Combine the following Fig.15 and Fig.16 An example of determining a frequency hopping pattern according to the method of Mode 4 is given below.

[0322] See also Fig.15 , Fig.15 is a frequency hopping pattern in a configuration of an embodiment of the present application. Fig.15 As shown, C SRS =24, b minhop With B SRS If both are configured as 2, the bandwidth of the fourth frequency domain resource is the same as the bandwidth of the first frequency domain resource, so the SRS can be sent on all RBs within the total bandwidth to be measured by frequency hopping.

[0323] See also Fig.16 , Fig.16 is a frequency hopping pattern in another configuration of the embodiment of the present application. Fig.16As shown, C SRS =24, b minhop Both are configured as 1, B SRS If the configuration is 2, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource. For example, in this embodiment, the bandwidth of the fourth frequency domain resource is twice the bandwidth of the first frequency domain resource. Then, according to formula (17), it is determined that the fourth frequency domain resources of two adjacent SRS transmissions are different, that is, frequency hopping, but the relative position of the first frequency domain resource that actually sends the SRS in the fourth frequency domain resource remains unchanged, that is, no frequency hopping. Therefore, the SRS can be sent on a first frequency domain resource bandwidth in all fourth frequency domain resources within the bandwidth to be measured by frequency hopping, that is, the SRS is sent on part of the RBs within the bandwidth to be measured, and it is also ensured that the RB blocks for sending the SRS are evenly distributed within the bandwidth to be measured.

[0324] Optionally, formulas (16) and (18) may also have other different calculation methods or expressions, which are not limited in the present invention.

[0325] Optionally, the value range of b in formula (17) is 0 to b max , for example b max =B SRS , or other values.

[0326] Then the limiting condition of formula (17) can be changed as follows:

[0327]

[0328] or,

[0329]

[0330] Or the value range of b can be further limited in the limiting conditions. Or other equivalent expressions can be used, which are not limited in the present invention.

[0331] Note that the symbols used in this article And Meaning the same.

[0332] The pre-definition may also be specified in the communication protocol.

[0333] The indication information or configuration information in the embodiment of the present application may be transmitted through one signaling or through multiple signalings. The signaling may be carried in RRC signaling, or in MAC CE signaling, or in DCI. The transmission by multiple signalings may be that the indication information or configuration information is divided into multiple parts, each part is transmitted by one signaling. It may also be that a candidate set of indication information or configuration information is first configured by one signaling, and then another signaling indicates one of the information in the candidate set. It may also be that a candidate set of indication information or configuration information is first configured by one signaling, and then a subset of the candidate set is indicated by a second signaling, and then a third signaling indicates one of the information in the subset of the candidate set. Optionally, the indication information or configuration information may also be configured by combining the above-mentioned multiple methods.

[0334] Combination of the above Figures 1 to 16 The method for sending a reference signal in an embodiment of the present application is described in detail. Figures 17 to 20 The terminal device and network device of the embodiment of the present application are described.

[0335] Fig.17 FIG. 5 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. Fig.17 As shown, the terminal device 500 includes a receiving unit 510, a processing unit 520 and a sending unit 530. Among them,

[0336] The receiving unit 510 is configured to receive first configuration information of a sounding reference signal SRS resource from a network device, where the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number N of SRS resources mapped to the same subcarrier and to at least one continuous symbol in a time unit, where N ≥ 1 and is an integer;

[0337] The processing unit 520 is configured to determine, according to the first configuration information, at least one first frequency domain resource mapped to the SRS resource in the first time unit;

[0338] The sending unit 530 is configured to send the SRS to the network device in the at least one first frequency domain resource.

[0339] The various units in the terminal device 500 of the embodiment of the present application and the above-mentioned other operations or functions are respectively for implementing the corresponding processes executed by the terminal device in the method for sending a reference signal, and will not be repeated here.

[0340] Fig.18 FIG. 6 is a schematic block diagram of a network device 600 according to an embodiment of the present application. Fig.18 As shown, the network device 600 includes a sending unit 610 and a receiving unit 620.

[0341] A sending unit 610 is configured to send first configuration information of an SRS resource to a terminal device, where the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number N of SRS resources mapped to the same subcarrier and to at least one continuous symbol in a time unit, where N ≥ 1 and is an integer;

[0342] The receiving unit 620 is used to receive an SRS sent by a terminal device in at least one first frequency domain resource, where the at least one first frequency domain resource is a frequency domain position for sending the SRS determined by the terminal device according to first configuration information.

[0343] Each unit in the network device 600 of the embodiment of the present application and the above-mentioned other operations or functions are respectively for implementing the corresponding processes executed by the network device in the method for sending a reference signal, which will not be described in detail here for the sake of brevity.

[0344] Fig.19 FIG. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present application. Fig.19 As shown, the terminal device 700 includes: one or more processors 701, one or more memories 702, and one or more transceivers 703. The processor 701 is used to control the transceiver 703 to send and receive signals, the memory 702 is used to store a computer program, and the processor 701 is used to call and run the computer program from the memory 702, so that the terminal device 700 executes the method for sending a reference signal. For the sake of brevity, it is not repeated here.

[0345] Fig. 20 FIG. 8 is a schematic structural diagram of a network device 800 according to an embodiment of the present application. Fig. 20 As shown, the network device 800 includes: one or more processors 801, one or more memories 802, and one or more transceivers 803. The processor 801 is used to control the transceiver 803 to send and receive signals, the memory 802 is used to store computer programs, and the processor 801 is used to call and run the computer program from the memory 802, so that the network device 800 performs the method for sending a reference signal. For the sake of brevity, it is not repeated here.

[0346] In addition, the present application also provides a computer program product, which includes: computer program code, when the computer program code is run on a computer, it enables the computer to execute the corresponding process and / or operation performed by the terminal device in the above-mentioned method of sending a reference signal.

[0347] In addition, the present application also provides a computer-readable medium, which stores a program code. When the computer program code runs on a computer, the computer executes the corresponding process and / or operation performed by the terminal device in the above-mentioned sending of the reference signal.

[0348] In addition, the present application also provides a chip system, which includes a processor for a terminal device to implement the functions involved in the method of sending a reference signal. For example, such as receiving or processing the data and / or information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0349] In addition, the present application also provides a chip system, which includes a processor for supporting the network device to implement the functions involved in the method of sending a reference signal. For example, such as sending or processing the data and / or information involved in the above method. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0350] In the above embodiments, the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. For example, the processor may include a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, etc. The processor may distribute the functions of controlling and processing signals of the mobile device among these devices according to the respective functions of these devices. In addition, the processor may include the function of operating one or more software programs, which may be stored in a memory.

[0351] The functions of the processor can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0352] The memory may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions. It may also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0353] Optionally, the above-mentioned memory and storage may be physically independent units, or the memory may be integrated with the processor.

[0354] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0355] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0356] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0357] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the technical solution of this embodiment.

[0358] 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.

[0359] In conjunction with the foregoing description, those skilled in the art will appreciate that the methods of the embodiments herein can be implemented by hardware (e.g., logic circuits), or software, or a combination of hardware and software. Whether these methods are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0360] When the above functions are implemented in the form of software and sold or used as an independent product, they can be stored in a computer-readable storage medium. In this case, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform 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 read-only memory (ROM), a random access memory (RAM), a disk or an optical disk.

[0361] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: include: Receive first configuration information of an SRS resource from a network device, wherein the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number L of at least one continuous symbol in which the SRS resource is mapped to the same subcarrier within a time unit. r , L r ≥1 and is an integer, the first configuration information also includes the number of symbols of the SRS resource and the starting symbol of the SRS resource in a time unit, the value of the repetition factor is not greater than the number of symbols of the SRS resource, and the starting symbol of the SRS resource in a time unit determines the maximum number of symbols of the SRS resource; Determine, according to the first configuration information, at least one first frequency domain resource to which the SRS resource is mapped within a first time unit; Sending an SRS to the network device in the at least one first frequency domain resource.

2. The method according to claim 1, characterized in that The sum of the starting symbol of the SRS resource in a time unit and the number of symbols of the SRS resource is not greater than L r -1.

3. The method according to claim 1 or 2, characterized in that: The SRS resource is a non-periodic SRS resource, the SRS resource is mapped in a time unit, and the count n of the positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is SRS It is expressed as: Wherein l' is the number of symbols that differ between a symbol in a time slot and the SRS start symbol.

4. The method according to claim 1 or 2, characterized in that: The SRS resource is a periodic SRS resource, and the number of positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is n. SRS It is expressed as: in, represents the sequence number of the current time slot in all time slots that can be used to send the SRS within a frame period, equal l' is the number of symbols that differ between the symbol in a time slot and the SRS start symbol, Indicates the number of symbols of SRS resources, n indicates the system frame number, Indicates the number of time slots in a frame, n s Indicates the time slot number within the frame, T SRS Indicates the period of SRS resources.

5. The method according to claim 1 or 2, characterized in that: Determining, according to the first configuration information, at least one first frequency domain resource to which the SRS resource is mapped within a first time unit includes: Determine, according to the first configuration information and the second configuration information, at least one second frequency domain resource of the SRS resource within the first time unit, where the second frequency domain resource is a part of the first frequency domain resource; And, sending the SRS to the network device in the at least one first frequency domain resource includes: The SRS is sent to the network device in the at least one second frequency domain resource.

6. The method according to claim 5, characterized in that The second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter, wherein the SRS bandwidth parameter is used to determine a bandwidth occupied by the second frequency domain resources, and the SRS bandwidth position parameter is used to determine a position of the bandwidth occupied by the second frequency domain resources in the bandwidth occupied by the first frequency domain resources.

7. The method according to claim 1 or 2, characterized in that: The first configuration information also includes the number of symbols occupied by the SRS resource in one time unit. is a positive integer, And, determining, according to the first configuration information, at least one first frequency domain resource to which the SRS resource is mapped within the first time unit, comprising: Determine, according to the first configuration information and the third configuration information, at least one third frequency domain resource to which the SRS resource is mapped within the first time unit, where the set consisting of the at least one third frequency domain resource is a subset of the set consisting of the at least one first frequency domain resource within one or more of the time units; And, sending the SRS to the network device in the at least one first frequency domain resource includes: The SRS is sent to the network device in the at least one third frequency domain resource.

8. The method according to claim 7, characterized in that The third configuration information is used to indicate the number of reference symbols The number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, wherein the Greater than And the Is a positive integer.

9. The method according to claim 7, characterized in that: The third configuration information is used to configure at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth frequency domain resource only includes one first frequency domain resource.

10. The method according to claim 1 or 2, characterized in that: The SRS resource is a non-periodic SRS resource, and the total bandwidth to be measured consists of K non-overlapping SRS bandwidths. And, sending the SRS to the network device in the at least one first frequency domain resource includes: If the number of symbols occupied by the SRS resource in a time unit Less than K·L r , sending the SRS only on each first frequency domain resource of the at least one first frequency domain resource within the first time unit; or, If the Greater than K·L r , only in the first K L of the SRS resource r The SRS is sent on symbols.

11. The method according to claim 10, characterized in that The frequency interval between the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain position of the total bandwidth to be measured is not greater than a first threshold value, and / or the frequency interval between the second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the second frequency domain position of the total bandwidth to be measured is not greater than a second threshold value, wherein the first threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth, and / or the second threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

12. The method according to claim 10, characterized in thatThe frequency interval between the third frequency domain positions of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

13. The method according to claim 1 or 2, characterized in that: The starting symbol of the SRS resource in a time unit, the number of symbols occupied by the SRS resource in a time unit and the repetition factor of the SRS resource are jointly encoded.

14. The method according to claim 1 or 2, characterized in that: The SRS resource is a non-periodic SRS resource, and the method further includes: If K is not equal to the number of symbols occupied by the SRS resource in one time unit then not sending the SRS on the SRS resource within the first time unit; or, If the K is greater than the then not sending the SRS on the SRS resource within the first time unit; or, If the K is less than the Then the SRS is not sent on the SRS resource within the first time unit.

15. A communication method, characterized in that: include: Sending first configuration information of an SRS resource to a terminal device, wherein the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number L of at least one continuous symbol in which the SRS resource is mapped on the same subcarrier within a time unit. r , L r ≥1 and is an integer, the first configuration information also includes the number of symbols of the SRS resource and the starting symbol of the SRS resource in a time unit, the value of the repetition factor is not greater than the number of symbols of the SRS resource, and the starting symbol of the SRS resource in a time unit determines the maximum number of symbols of the SRS resource; Receive the SRS sent by the terminal device in at least one first frequency domain resource, wherein the at least one first frequency domain resource is the frequency domain resource of the SRS sent determined by the terminal device according to the first configuration information.

16. The method according to claim 15, characterized in that The sum of the starting symbol of the SRS resource in a time unit and the number of symbols of the SRS resource is not greater than L r -1.

17. The method according to claim 15 or 16, characterized in that The SRS resource is a non-periodic SRS resource, the SRS resource is mapped in a time unit, and the count n of the positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is SRS It is expressed as: Wherein l' is the number of symbols that differ between a symbol in a time slot and the SRS start symbol.

18. The method according to claim 15 or 16, characterized in that The SRS resource is a periodic SRS resource, and the number of positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is n. SRS It is expressed as: in, represents the sequence number of the current time slot in all time slots that can be used to send the SRS within a frame period, equal l' is the number of symbols that differ between the symbol in a time slot and the SRS start symbol, Indicates the number of symbols of SRS resources, n indicates the system frame number, Indicates the number of time slots in a frame, n s Indicates the time slot number within the frame, T SRS Indicates the period of SRS resources.

19. The method according to claim 15, characterized in that The method further comprises: Sending second configuration information to the terminal device, so that the terminal device determines at least one second frequency domain resource according to the first configuration information and the second configuration information, where the second frequency domain resource is a part of the first frequency domain resource; And, receiving an SRS sent by the terminal device in at least one first frequency domain resource, comprising: Receive the SRS sent by the terminal device in the at least one second frequency domain resource.

20. The method according to claim 19, characterized in that The second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter, wherein the SRS bandwidth parameter is used to determine a bandwidth occupied by the second frequency domain resources, and the SRS bandwidth position parameter is used to determine a position of a bandwidth corresponding to the second frequency domain resources in a bandwidth corresponding to the first frequency domain resources.

21. The method according to claim 15 or 16, characterized in that The first configuration information also includes the number of symbols occupied by the SRS resource in one time unit. is a positive integer, And, the method further comprises: Sending third configuration information to the terminal device, so that the terminal device determines at least one third frequency domain resource according to the first configuration information and the third configuration information, where the at least one third frequency domain resource is a subset of the set consisting of the at least one first frequency domain resource in one or more time units; And, receiving an SRS sent by the terminal device in at least one first frequency domain resource, comprising: Receive the SRS sent by the terminal device in the at least one third frequency domain resource.

22. The method according to claim 21, characterized in that The third configuration information is used to indicate the number of reference symbols The number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, wherein the Greater than Said Is a positive integer.

23. The method according to claim 21, characterized in that The third configuration information is used to configure at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth frequency domain resource only includes one first frequency domain resource.

24. The method according to claim 15 or 16, characterized in that The SRS resource is a non-periodic SRS resource, and the total bandwidth to be measured is composed of K non-overlapping SRS bandwidths. And, receiving an SRS sent by the terminal device in at least one first frequency domain resource, comprising: If the number of symbols occupied by the SRS resource in a time unit Less than K·L r , receiving the SRS sent by the terminal device on each first frequency domain resource of the at least one first frequency domain resource within the first time unit; or, If the Greater than K·L r , receiving the SRS sent by the terminal device on the first K·N symbols of the SRS resource in the first time unit.

25. The method according to claim 24, characterized in that The frequency interval between the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain position of the total bandwidth to be measured is not greater than a first threshold value, and / or the frequency interval between the second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the second frequency domain position of the total bandwidth to be measured is not greater than a second threshold value, and the first threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth, and / or and the second threshold value are determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

26. The method according to claim 24, characterized in that The frequency interval between the third frequency domain positions of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

27. The method according to claim 15 or 16, characterized in that The starting symbol of the SRS resource in a time unit, the number of symbols occupied by the SRS resource in a time unit and the repetition factor of the SRS resource are jointly encoded and sent to the terminal device.

28. The method according to claim 15 or 16, characterized in that The SRS resource is a non-periodic SRS resource, and the method further includes: If K is not equal to the number of symbols occupied by the SRS resource in one time unit The SRS cannot be received on the SRS resource within the first time unit; or, If the K is greater than the The SRS cannot be received on the SRS resource within the first time unit; or, If the K is less than the The SRS resource within the first time unit cannot receive the SRS.

29. A communication device, characterized in that: include: A receiving unit, configured to receive first configuration information of an SRS resource from a network device, wherein the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number L of at least one continuous symbol in which the SRS resource is mapped to the same subcarrier within a time unit. r , L r ≥1 and is an integer, the first configuration information also includes the number of symbols of the SRS resource and the starting symbol of the SRS resource in a time unit, the value of the repetition factor is not greater than the number of symbols of the SRS resource, and the starting symbol of the SRS resource in a time unit determines the maximum number of symbols of the SRS resource; a processing unit, configured to determine, according to the first configuration information, at least one first frequency domain resource to which the SRS resource is mapped within a first time unit; A sending unit is used to send the SRS to the network device in the at least one first frequency domain resource.

30. The device according to claim 29, characterized in that The sum of the starting symbol of the SRS resource in a time unit and the number of symbols of the SRS resource is not greater than L r -1.

31. The device according to claim 29 or 30, characterized in that The SRS resource is a non-periodic SRS resource, the SRS resource is mapped in a time unit, and the count n of the positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is SRS It is expressed as: Wherein l' is the number of symbols that differ between a symbol in a time slot and the SRS start symbol.

32. The device according to claim 29 or 30, characterized in that The SRS resource is a periodic SRS resource, and the number of positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is n. SRS It is expressed as: in, represents the sequence number of the current time slot in all time slots that can be used to send the SRS within a frame period, equal l' is the number of symbols that differ between the symbol in a time slot and the SRS start symbol, Indicates the number of symbols of SRS resources, n indicates the system frame number, Indicates the number of time slots in a frame, n s Indicates the time slot number within the frame, T SRS Indicates the period of SRS resources.

33. The device according to claim 29 or 30, characterized in that The processing unit is further configured to determine, according to the first configuration information and the second configuration information, at least one second frequency domain resource of the SRS resource within the first time unit, where the second frequency domain resource is a part of the first frequency domain resource; The sending unit is specifically configured to send the SRS to the network device in the at least one second frequency domain resource.

34. The device according to claim 33, characterized in that The second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter, wherein the SRS bandwidth parameter is used to determine a bandwidth occupied by the second frequency domain position, and the SRS bandwidth position parameter is used to determine a position of a bandwidth corresponding to the second frequency domain resource in a bandwidth corresponding to the first frequency domain resource.

35. The device according to claim 29 or 30, characterized in that The first configuration information also includes the number of symbols occupied by the SRS resource in one time unit. is a positive integer, And, the processing unit is specifically used to determine, according to the first configuration information and the third configuration information, at least one third frequency domain resource mapped by the SRS resource in the first time unit, where the at least one third frequency domain resource is a subset of the set consisting of the at least one first frequency domain resource in one or more of the time units; And, the sending unit is specifically used to send the SRS to the network device in the at least one third frequency domain resource.

36. The device according to claim 35, characterized in that The third configuration information is used to indicate the number of reference symbols The number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, wherein the Greater than Said Is a positive integer.

37. The device according to claim 35, characterized in that The third configuration information is used to configure at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth frequency domain resource only includes one first frequency domain resource.

38. The device according to claim 29 or 30, characterized in that The SRS resource is a non-periodic SRS resource, the total bandwidth to be measured is composed of K non-overlapping frequency resources, the bandwidth of the frequency resource is the SRS bandwidth, and the sending unit is specifically used for: If the number of symbols occupied by the SRS resource in a time unit Less than K·L r , sending the SRS on each first frequency domain resource of the at least one first frequency domain resource within the first time unit; or, If the Greater than K·L r , the first K·L of the SRS resources in the first time unit r The SRS is sent on symbols.

39. The device according to claim 38, characterized in that The frequency interval between the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain position of the total bandwidth to be measured is not greater than a first threshold value, and / or the frequency interval between the second frequency domain position in the at least one first frequency domain resource and the second frequency domain position of the total bandwidth to be measured is not greater than a second threshold value, wherein the first threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth, and / or the second threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

40. The device according to claim 38, characterized in that The frequency interval between the third frequency domain positions of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

41. The device according to claim 29 or 30, characterized in that The starting symbol of the SRS resource in a time unit, the number of symbols occupied by the SRS resource in a time unit and the repetition factor of the SRS resource are jointly encoded.

42. The device according to claim 29 or 30, characterized in that The SRS resource is a non-periodic SRS resource, and the sending unit is further used for: If K is not equal to the number of symbols occupied by the SRS resource in one time unit not sending the SRS on the SRS resource within the first time unit; or, If the K is greater than the not sending the SRS on the SRS resource within the first time unit; or, If the K is less than the The SRS is not sent on the SRS resource within the first time unit.

43. A communication device, characterized in that: include: A sending unit, configured to send first configuration information of an SRS resource to a terminal device, wherein the first configuration information indicates a time domain parameter of the SRS resource, and the first configuration information includes a repetition factor of the SRS resource, wherein the repetition factor of the SRS resource refers to the number L of at least one continuous symbol that the SRS resource is mapped to the same subcarrier within a time unit. r , L r ≥1 and is an integer, the first configuration information includes the number of symbols of the SRS resource and the starting symbol of the SRS resource in a time unit, the value of the repetition factor is not greater than the number of symbols of the SRS resource, and the starting symbol of the SRS resource in a time unit determines the maximum number of symbols of the SRS resource; A receiving unit is used to receive the SRS sent by the terminal device in at least one first frequency domain resource, wherein the at least one first frequency domain resource is the frequency domain resource of the SRS sent by the terminal device determined according to the first configuration information.

44. The device according to claim 43, characterized in that The sum of the starting symbol of the SRS resource in a time unit and the number of symbols of the SRS resource is not greater than L r -1.

45. The device according to claim 43 or 44, characterized in that The SRS resource is a non-periodic SRS resource, the SRS resource is mapped in a time unit, and the count n of the positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is SRS It is expressed as: Wherein l' is the number of symbols that differ between a symbol in a time slot and the SRS start symbol.

46. ​​The device according to claim 43 or 44, characterized in that The SRS resource is a periodic SRS resource, and the number of positions where the SRS resource is transmitted on consecutive symbols and the same subcarrier is n. SRS It is expressed as: in, represents the sequence number of the current time slot in all time slots that can be used to send the SRS within a frame period, equal l' is the number of symbols that differ between the symbol in a time slot and the SRS start symbol, Indicates the number of symbols of SRS resources, n indicates the system frame number, Indicates the number of time slots in a frame, n s Indicates the time slot number within the frame, T SRS Indicates the period of SRS resources.

47. The device according to claim 43 or 44, characterized in that The sending unit is also used for: Sending second configuration information to the terminal device, so that the terminal device determines at least one second frequency domain resource according to the first configuration information and the second configuration information, where the second frequency domain resource is a part of the bandwidth of the first frequency domain resource; And, the receiving unit is specifically used to receive the SRS sent by the terminal device in the at least one second frequency domain resource.

48. The device according to claim 47, characterized in that The second configuration information is used to indicate an SRS bandwidth parameter and an SRS bandwidth position parameter, wherein the SRS bandwidth parameter is used to determine a bandwidth occupied by the second frequency domain resources, and the SRS bandwidth position parameter is used to determine a position of a bandwidth corresponding to the second frequency domain resources in a bandwidth corresponding to the first frequency domain resources.

49. The device according to claim 43 or 44, characterized in that The first configuration information also includes the number of symbols occupied by the SRS resource in one time unit. is a positive integer, And, the sending unit is further used to send third configuration information to the terminal device, so that the terminal device determines at least one third frequency domain resource according to the first configuration information and the third configuration information, and the at least one third frequency domain resource is a subset of the set consisting of the at least one first frequency domain resource in one or more time units; And, the receiving unit is specifically used to receive the SRS sent by the terminal device in the at least one third frequency domain resource.

50. The device according to claim 49, characterized in that The third configuration information is used to indicate the number of reference symbols The number of reference symbols is used to determine at least one first frequency domain resource occupied by the SRS resource in the first time unit, wherein the Greater than Said Is a positive integer.

51. The device according to claim 49, characterized in that The third configuration information is used to configure at least one fourth frequency domain resource, the bandwidth of the fourth frequency domain resource is greater than the bandwidth of the first frequency domain resource, and the fourth frequency domain resource only includes one first frequency domain resource.

52. The device according to claim 43 or 44, characterized in that The SRS resource is a non-periodic SRS resource, and the total bandwidth to be measured is composed of K non-overlapping SRS bandwidths. And, the receiving unit is used for: If the number of symbols occupied by the SRS resource in a time unit Less than K·L r , receiving the SRS sent by the terminal device on each first frequency domain resource of the at least one first frequency domain resource within the first time unit; or, If the Greater than K·L r , receiving the first K·L of the SRS resource of the terminal device in the first time unit r The SRS is sent on symbols.

53. The device according to claim 52, characterized in that The frequency interval between the first frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the first frequency domain position of the total bandwidth to be measured is not greater than a first threshold value, and / or the frequency interval between the second frequency domain position of the bandwidth occupied by the at least one first frequency domain resource and the second frequency domain position of the total bandwidth to be measured is not greater than a second threshold value, wherein the first threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth, and / or the second threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

54. The device according to claim 52, characterized in that The frequency interval between the third frequency domain positions of two adjacent first frequency domain resources in the at least one first frequency domain resource is not greater than a third threshold value, wherein the third threshold value is determined according to at least one of the following parameters: the K, the The L r , the total bandwidth to be measured and the user-level SRS bandwidth.

55. The device according to claim 43 or 44, characterized in that The starting symbol of the SRS resource in a time unit, the number of symbols occupied by the SRS resource in a time unit and the repetition factor of the SRS resource.

56. The device according to claim 43 or 44, characterized in that The SRS resource is a non-periodic SRS resource, and the receiving unit is further used for: If K is not equal to the number of symbols occupied by the SRS resource in one time unit The SRS cannot be received on the SRS resource within the first time unit; or, If the K is greater than the The SRS cannot be received on the SRS resource within the first time unit; or, If the K is less than the The SRS cannot be received on the SRS resource within the first time unit.

57. A communication method, characterized in that: include: Receiving first configuration information of an SRS resource of a first time slot from a network device, the first configuration information including a repetition factor Lr of the SRS resource, and the first configuration information indicating that the SRS resource consists of 4 symbols; According to n SRS , determine the two first frequency domain resources mapped by the SRS resource in the first time slot, n SRS is the count of frequency domain positions within the SRS resource, n SRS Different values ​​of are associated with different frequency domain resources of the 4 symbols, where n SRS satisfy: l' represents the difference between the symbol numbers of the four symbols in the first time slot and the starting symbol of the SRS resource in the first time slot, l'=0, 1, 2, 3, L r =2, wherein the difference between the number of symbols in a time slot and the starting symbol value of the SRS resource in the first time slot is greater than or equal to 4; Sending an SRS to the network device in the two first frequency domain resources.

58. The method according to claim 57, characterized in that The first configuration information also includes a starting symbol number of the SRS resource in the first time slot.

59. The method according to claim 57 or 58, characterized in that The SRS resource is a non-periodic SRS resource.

60. The method according to any one of claims 57 to 58, characterized in that The first configuration information also includes the number of symbols of the SRS resource.

61. A communication device, characterized in that: include: A receiving unit, configured to receive first configuration information of an SRS resource of a first time slot from a network device, wherein the first configuration information includes a repetition factor Lr of the SRS resource, and the first configuration information indicates that the SRS resource consists of 4 symbols; Processing unit for SRS , determine the two first frequency domain resources mapped by the SRS resource in the first time slot, n SRS is the count of frequency domain positions within the SRS resource, n SRS Different values ​​of are associated with different frequency domain resources of the 4 symbols, where n SRS satisfy: l' represents the difference between the symbol numbers of the four symbols in the first time slot and the starting symbol number of the SRS resource in the first time slot, l'=0, 1, 2, 3, L r =2, wherein the difference between the number of symbols in a time slot and the starting symbol value of the SRS resource in the first time slot is greater than or equal to 4; A sending unit is used to send the SRS to the network device in the two first frequency domain resources.

62. The device according to claim 61, characterized in that The first configuration information also includes a starting symbol number of the SRS resource in the first time slot.

63. The device according to claim 61 or 62, characterized in that The SRS resource is a non-periodic SRS resource.

64. The device according to any one of claims 61 to 62, characterized in that The first configuration information also includes the number of symbols of the SRS resource.

65. A chip system in a network device, characterized in that: include: Memory, which stores instructions; A processor is used to support the network device to execute the method described in any one of claims 1-28, 57-60 when executing the instructions.

66. A computer-readable medium storing instructions, which, when executed on a computer, cause the computer to execute the method of any one of claims 1-28, 57-60.

67. A computer program product, comprising instructions, which, when executed on a computer, cause the computer to execute the method of any one of claims 1-28, 57-60.

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