WO2023011109A1

WO2023011109A1 - Reference signal transmission method and apparatus

Info

Publication number: WO2023011109A1
Application number: PCT/CN2022/104682
Authority: WO
Inventors: 龚名新; 张荻
Original assignee: 华为技术有限公司
Priority date: 2021-08-06
Filing date: 2022-07-08
Publication date: 2023-02-09
Also published as: CN115707124A

Abstract

The present application relates to the technical field of communications, and discloses a reference signal transmission method and apparatus, capable of improving the utilization rate of frequency domain resources by the transmission of a reference signal. The method comprises: receiving reference signal configuration information from a network device; determining a first frequency domain resource according to the reference signal configuration information, wherein the first frequency domain resource is one of a plurality of frequency domain resources, the plurality of frequency domain resources are respectively a part of a second frequency domain resource, there are at least two frequency domain resources having unequal bandwidths in the plurality of frequency domain resources, and the second frequency domain resource is a continuous frequency domain resource; and sending a reference signal on the first frequency domain resource.

Description

Method and device for transmitting a reference signal

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202110902764.X and the application title "A Transmission Method and Device for Reference Signals" filed with the China Patent Office on August 6, 2021, the entire contents of which are incorporated by reference in this application.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a reference signal transmission method and device.

Background technique

In a communication system, a reference signal (reference signal, RS) may also be referred to as a "pilot" signal, which is a known signal provided by a transmitting end to a receiving end for channel estimation or channel detection. Reference signals are divided into uplink reference signals and downlink reference signals. Wherein, the uplink reference signal refers to a signal sent by the terminal device to the network device, that is, the sending end is the terminal device, and the receiving end is the network device. The uplink reference signal is used for uplink channel estimation (for coherent demodulation and detection of network equipment or for calculating precoding) and uplink channel quality measurement. The uplink reference signal may include: a demodulation reference signal (demodulation reference signal, DMRS) and a sounding reference signal (sounding reference signal, SRS). SRS can be used to estimate the quality of the uplink channel and channel selection, calculate the signal to interference plus noise ratio (SINR) of the uplink channel, and can also be used to obtain the coefficients of the uplink channel. In a time-division duplex (TDD) scenario, uplink and downlink channels are reciprocal, and SRS can also be used to obtain downlink channel coefficients.

However, in the prior art, when allocating frequency domain resources for SRS transmission, the resource allocation utilization rate is low, and there is a problem of resource waste.

Contents of the invention

Embodiments of the present application provide a method and device for transmitting a reference signal, which can improve the utilization rate of frequency domain resources for transmission of the reference signal.

In a first aspect, an embodiment of the present application provides a reference signal transmission method, the method including: receiving reference signal configuration information from a network device; determining a first frequency domain resource according to the reference signal configuration information, and the first The frequency domain resource is one of a plurality of frequency domain resources, the plurality of frequency domain resources are respectively a part of the second frequency domain resource, and there are at least two frequency domain resources in the plurality of frequency domain resources with different bandwidths Equally, the second frequency domain resource is a continuous frequency domain resource; a reference signal is sent on the first frequency domain resource. Wherein, the first frequency domain resource may refer to the RB occupied by the terminal device to send the reference signal, and the second frequency domain resource may refer to the RB corresponding to the frequency hopping bandwidth of the reference signal configured by the network device for the terminal device.

Using the above method, when the number of RBs included in the second frequency domain resource cannot be divisible by the number of frequency domain resources, the RBs included in the second frequency domain resource can be allocated to multiple terminal devices in an uneven manner, so as to fully Utilize frequency domain resources to avoid waste of frequency domain resources.

In a possible design, the multiple frequency domain resources do not overlap each other, and the sum of the bandwidths is equal to the bandwidth of the second frequency domain resource.

In the above design, the multiple frequency domain resources do not overlap with each other, and the sum of the bandwidth is equal to the bandwidth of the second frequency domain resource, which can make full use of the frequency domain resources, avoid resource waste, and avoid multiple terminal devices in the second frequency domain When resources are sent in a frequency division multiplexing manner (that is, when multiple terminal devices are scheduled to send reference signals in different frequency domain resources), there is a problem that multiple terminal devices send conflicting frequency domain resources for sending reference signals.

In a possible design, the reference signal configuration information includes a partial bandwidth factor _PF and a partial bandwidth frequency domain location factor K _F , the _PF indicates the number of the multiple frequency domain resources, and the K _F indicates A position of the first frequency domain resource among the multiple frequency domain resources.

In a possible design, a bandwidth of any frequency domain resource among the multiple frequency domain resources is a first bandwidth or a second bandwidth, and the first bandwidth and the second bandwidth are not equal.

In the above design, it is beneficial to ensure that the number of RBs included in multiple frequency domain resources is the same or similar, and avoid scheduling multiple terminal devices when the second frequency domain resource uses frequency division multiplexing to send reference signals. The problem of unbalanced frequency domain resources.

In a possible design, the multiple frequency domain resources include: X frequency domain resources with a bandwidth of the first bandwidth and Y frequency domain resources with a bandwidth of the second bandwidth, wherein each of the bandwidths is the second bandwidth. A frequency domain resource with a bandwidth includes RBs divided by M divided by N and taken up to an integer multiple of L, and each frequency domain resource whose bandwidth is a second bandwidth includes RBs divided by M divided by N taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, X is the remainder of dividing M by L and N, Y is the difference between N and X, L is an integer greater than or equal to 1, and N is the multiple The number of frequency domain resources. Optionally, the L is 1 or 4.

By adopting the above-mentioned design, the frequency domain resources can be fully utilized and waste of frequency domain resources can be avoided through the rounding-up or rounding-down rules.

In a possible design, the position of the plurality of frequency domain resources in the second frequency domain resource is position i, from the low frequency to the high frequency of the second frequency domain resource, i is 0, 1 in sequence , ..., N-1, N is the number of the multiple frequency domain resources; wherein, when i is an integer less than or equal to (N-1) divided by 2 and rounded down and greater than 0, position i- The number of RBs included in the frequency domain resource corresponding to 1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i; when i is an integer greater than (N-1) divided by 2 and rounded down and less than N-1, The number of RBs included in the frequency domain resource corresponding to position i+1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i.

With the above design, the distribution of the multiple frequency domain resources satisfies the above conditions, which can ensure the channel estimation performance of the terminal device that occupies the frequency domain resource located at the edge side of the second frequency domain resource to send the reference signal.

In a possible design, the reference signal is a sounding reference signal SRS.

In a second aspect, an embodiment of the present application provides a method for transmitting a reference signal, the method including: receiving reference signal configuration information from a network device; determining a first frequency domain resource according to the reference signal configuration information, and the first The frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively a part of a second frequency domain resource, and the second frequency domain resource includes first idle frequency domain resources in sequence from low frequency to high frequency . The plurality of frequency domain resources and a second idle frequency domain resource, where the second frequency domain resource is a continuous frequency domain resource; sending a reference signal on the first frequency domain resource.

By adopting the above method, the RBs on the edge side of the second frequency domain resources can be prevented from sending reference signals, and the interference caused by out-of-band leakage to other terminal devices transmitting data on adjacent frequency domain resources of the second frequency domain resources can be reduced.

In a possible design, the first idle frequency domain resource, the plurality of frequency domain resources, and the second idle frequency domain resource do not overlap with each other, and the sum of the bandwidths is equal to that of the second frequency domain resource. bandwidth.

In the above design, the multiple frequency domain resources do not overlap with each other, and the sum of the bandwidth is equal to the bandwidth of the second frequency domain resource, which can make full use of the frequency domain resources, avoid resource waste, and avoid multiple terminal devices in the second frequency domain When resources are sent by frequency division multiplexing (that is, when multiple terminal devices are scheduled to send reference signals on different frequency domain resources), the frequency domain resources for multiple terminal devices to send reference signals conflict.

In a possible design, each frequency domain resource in the plurality of frequency domain resources includes resource blocks RB that are an integer multiple of L divided by N, and M is the resource block RB included in the second frequency domain resource. The number of RBs, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources; when O can be divisible by 2, the first idle frequency domain resources and the second idle frequency domain resources are each Including the number of RBs divided by O by 2, the O is equal to the value of the remainder of M divided by L and divided by N multiplied by L; or, when O is not divisible by 2, the first idle frequency domain resource includes O divided The number of RBs rounded up by 2, the second idle frequency domain resource includes 0 divided by 2 and the number of RBs rounded down by 2; or, when O is not divisible by 2, the first idle frequency domain resource includes O Divided by the number of RBs rounded down by 2, the second idle frequency domain resources include RBs divided by the number of RBs rounded up by 2.

With the above design, there are more idle RBs on the low-frequency edge side and high-frequency edge side of the second frequency domain resource to suppress out-of-band leakage to other terminal devices and transmit data on adjacent frequency domain resources of the second frequency domain resource etc. interference.

In a possible design, the L is 1 or 4.

In a possible design, bandwidths of at least two frequency domain resources among the multiple frequency domain resources are unequal.

In a possible design, the reference signal is a sounding reference signal SRS.

In a third aspect, an embodiment of the present application provides a reference signal transmission method, the method includes: determining a first frequency domain resource according to reference signal configuration information sent to a terminal device, and the first frequency domain resource is a plurality of frequency domain resources One of the frequency domain resources, the plurality of frequency domain resources are respectively a part of the second frequency domain resources, and the bandwidths of at least two frequency domain resources are not equal among the plurality of frequency domain resources, and the second frequency domain resources The domain resource is a continuous frequency domain resource; the reference signal is received on the first frequency domain resource.

In a possible design, the multiple frequency domain resources do not overlap with each other, and the sum of the bandwidths is equal to the bandwidth of the second frequency domain resource.

In a possible design, the multiple frequency domain resources include: X frequency domain resources with a bandwidth of the first bandwidth and Y frequency domain resources with a bandwidth of the second bandwidth, wherein each of the bandwidths is the second bandwidth. A frequency domain resource with a bandwidth includes RBs divided by M divided by N and taken up to an integer multiple of L, and each frequency domain resource whose bandwidth is a second bandwidth includes RBs divided by M divided by N taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, X is the remainder of dividing M by L and N, Y is the difference between N and X, L is an integer greater than or equal to 1, and N is the multiple The number of frequency domain resources.

In a possible design, the L is 1 or 4.

In a possible design, the reference signal is a sounding reference signal SRS.

In a fourth aspect, an embodiment of the present application provides a reference signal transmission method, the method including: determining a first frequency domain resource according to reference signal configuration information sent to a terminal device, and the first frequency domain resource is a plurality of frequency domain resources one of the frequency domain resources, the plurality of frequency domain resources are respectively a part of the second frequency domain resources, and the second frequency domain resources include the first idle frequency domain resource, the plurality of frequency domain resources in sequence from low frequency to high frequency resources and a second idle frequency domain resource, where the second frequency domain resource is a continuous frequency domain resource; a reference signal is received on the first frequency domain resource.

In a possible design, the L is 1 or 4.

In a possible design, the reference signal is a sounding reference signal SRS.

In the fifth aspect, the embodiment of the present application provides a communication device, which has a method to realize the above-mentioned first aspect or any one of the possible design methods of the first aspect, or realize the above-mentioned second aspect or any one of the second aspect The functions of the method in the possible designs may be realized by hardware, or by executing corresponding software by hardware. The hardware or software includes one or more modules (or units) corresponding to the above functions, such as a transceiver unit and a processing unit.

In one possible design, the device may be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can perform any of the above-mentioned first aspect or the first aspect. A method in a possible design, or a method in a possible design that implements the above second aspect or any of the second aspects.

In a possible design, the device may be a terminal device.

In the sixth aspect, the embodiment of the present application provides a communication device, which has a method in design to realize the above third aspect or any possible design of the third aspect, or realize the above fourth aspect or any one of the fourth aspect The functions of the method in the possible designs may be realized by hardware, or by executing corresponding software by hardware. The hardware or software includes one or more modules (or units) corresponding to the above functions, such as a transceiver unit and a processing unit.

In one possible design, the device may be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor, and the memory is used to store a program executed by the processor. When the program is executed by the processor, the device can perform any of the third aspect or the third aspect. A method in a possible design, or a method in a possible design that implements the fourth aspect or any of the fourth aspects.

In one possible design, the device may be a network device.

In the seventh aspect, the embodiment of the present application provides a communication system, the communication system includes a terminal device and a network device, and the terminal device can execute the method in the above-mentioned first aspect or any possible design of the first aspect, The network device may execute the method in the third aspect or any possible design of the third aspect; or the terminal device may execute the method in the second aspect or any possible design of the second aspect , the network device may execute the method in any possible design of the fourth aspect or the fourth aspect.

In the eighth aspect, the embodiments of the present application provide a computer-readable storage medium, in which computer programs or instructions are stored, and when the computer programs or instructions are executed by a communication device, the above-mentioned first aspect or the first aspect can be realized. The method described in any possible design of one aspect, or realize the method described in any possible design of the above second aspect or the second aspect, or realize the above third aspect or any of the third aspects The method described in one possible design, or the method described in any possible design for realizing the fourth aspect or the fourth aspect.

In the ninth aspect, the embodiment of the present application also provides a computer program product, including computer programs or instructions, when the computer programs or instructions are executed by the communication device, any possible design of the above-mentioned first aspect or the first aspect can be realized The method described in, or the method described in any possible design for realizing the second aspect or the second aspect above, or the method described in any possible design for realizing the third aspect or the third aspect method, or the method described in the fourth aspect or any possible design of the fourth aspect.

In the tenth aspect, the embodiment of the present application also provides a chip, the chip is coupled with the memory, and is used to read and execute the program or instruction stored in the memory to realize the above first aspect or any possibility of the first aspect The method described in the design, or the method described in the second aspect or any possible design of the second aspect, or the third aspect or any possible design of the third aspect The method described above, or the method described in implementing the fourth aspect or any possible design of the fourth aspect.

For the technical effects that can be achieved from the third aspect to the tenth aspect, please refer to the technical effects that can be achieved in the first aspect or the second aspect, and will not be repeated here.

Description of drawings

FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

FIG. 2A and FIG. 2B are one of the schematic diagrams of sending SRS provided by the embodiment of the present application;

FIG. 3 is a schematic diagram of frequency domain resources occupied by SRSs in different SRS transmission modes provided by the embodiment of the present application;

FIG. 4 is one of schematic diagrams of a terminal device sending an SRS in a frequency hopping manner according to an embodiment of the present application;

FIG. 5 is the second schematic diagram of a terminal device sending an SRS in a frequency hopping manner according to an embodiment of the present application;

FIG. 6 is one of the schematic diagrams of frequency domain resource occupation methods provided by the embodiment of the present application;

FIG. 7 is the second schematic diagram of the frequency domain resource occupation method provided by the embodiment of the present application;

FIG. 8 is one of the schematic diagrams of the transmission method provided by the embodiment of the present application;

FIG. 9 is one of the schematic diagrams of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 10 is the second schematic diagram of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 11 is the third schematic diagram of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 12 is a fourth schematic diagram of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 13 is the fifth schematic diagram of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 14 is the sixth schematic diagram of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 15A and FIG. 15B are schematic diagrams of second frequency domain resources provided by the embodiment of the present application;

FIG. 16A and FIG. 16B are schematic diagrams of yet another second frequency domain resource provided by the embodiment of the present application;

Figure 17 is the second schematic diagram of the transmission method provided by the embodiment of the present application;

Figure 18A and Figure 18B are the seventh and eighth schematic diagrams of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 19 is a ninth schematic diagram of frequency domain resource distribution provided by the embodiment of the present application;

FIG. 20 is one of the schematic diagrams of the communication device provided by the embodiment of the present application;

FIG. 21 is the second schematic diagram of the communication device provided by the embodiment of the present application.

Detailed ways

FIG. 1 is a schematic structural diagram of a communication system applied in an embodiment of the present application. As shown in FIG. 1 , the communication system 1000 includes a radio access network 100 and a core network 200 . Optionally, the communication system 1000 may also include the Internet 300 . Wherein, the radio access network 100 may include at least one network device, such as 110a and 110b in FIG. 1 , and may also include at least one terminal device, such as 120a-120j in FIG. 1 . Wherein, 110a is a base station, 110b is a micro station, 120a, 120e, 120f and 120j are mobile phones, 120b is a car, 120c is a fuel dispenser, 120d is a home access point (HAP) arranged indoors or outdoors, 120g is a laptop, 120h is a printer, and 120i is a drone. Wherein, the same terminal device or network device may provide different functions in different application scenarios. For example, the mobile phones in Figure 1 include 120a, 120e, 120f and 120j. The mobile phone 120a can connect to the base station 110a, connect to the car 120b, communicate directly with the mobile phone 120e, and access the HAP. The mobile phone 120b can access the HAP and communicate with the mobile phone 120a. For direct communication, the mobile phone 120f can be connected to the micro station 110b, connected to the laptop 120g, connected to the printer 120h, and the mobile phone 120j can control the drone 120i.

The terminal device is connected to the network device, and the network device is connected to the core network. Core network equipment and network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the network equipment can be integrated on the same physical equipment, or a physical equipment can integrate part of the core network equipment. device functions and functions of some network devices. Terminal devices and network devices may be connected to each other in a wired or wireless manner. FIG. 1 is only a schematic diagram. The communication system may also include other devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .

Network equipment, also known as wireless access network equipment, can be base station (base station), evolved base station (evolved NodeB, eNodeB), transmission reception point (transmission reception point, TRP), fifth generation (5th generation, 5G ) next generation NodeB (next generation NodeB, gNB) in the mobile communication system, base station in the sixth generation (6th generation, 6G) mobile communication system, base station in the future mobile communication system or access node in the WiFi system, etc.; It may also be a module or unit that completes some functions of the base station, for example, it may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and also completes the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station The functions of the radio link control layer and the medium access control (medium access control, MAC) layer can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned protocol layers, you can refer to the third generation partnership project (3rd generation partnership project, 3GPP) related technical specifications. The network device may be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

A terminal device may also be called a terminal, a user equipment (user equipment, UE), a mobile station, a mobile terminal, and the like. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (internet of things, IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

Network equipment and terminal equipment can be fixed or mobile. Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

The roles of network equipment and terminal equipment may be relative. For example, the helicopter or UAV 120i in FIG. 1 may be configured as a mobile network equipment. , the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, communication between 110a and 120i is performed through a wireless air interface protocol. Of course, communication between 110a and 120i may also be performed through an interface protocol between network devices. In this case, compared to 110a, 120i is also a network device. Therefore, both network equipment and terminal equipment can be collectively referred to as communication devices, 110a and 110b in FIG. 1 can be referred to as communication devices with network device functions, and 120a-120j in FIG. 1 can be referred to as communication devices with terminal device functions .

Communication between network devices and terminal devices, between network devices and network devices, between terminal devices and terminal devices can be performed through licensed spectrum, or through license-free spectrum, or through licensed spectrum and license-free spectrum at the same time Communication: Communication can be performed through a frequency spectrum below 6 gigahertz (GHz), or can be performed through a frequency spectrum above 6 GHz, and can also be performed using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

In the embodiments of the present application, the functions of the network device may also be performed by modules (such as chips) in the network device, or may be performed by a control subsystem including the functions of the network device. Here, the control subsystem including network device functions may be the control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal equipment may also be performed by a module (such as a chip or a modem) in the terminal equipment, or may be performed by a device including the functions of the terminal equipment.

In this application, the network device sends downlink signals or downlink information to the terminal device, and the downlink information is carried on the downlink channel; the terminal device sends uplink signals or uplink information to the network device, and the uplink information is carried on the uplink channel. In order to communicate with the network device, the terminal device needs to establish a wireless connection with the cell controlled by the network device. A cell with which a terminal device has established a wireless connection is called the serving cell of the terminal device. When the terminal equipment communicates with the serving cell, it will also be interfered by signals from neighboring cells.

In addition, in the embodiments of the present application, the time-domain symbols may be Orthogonal Frequency Division Multiplexing (OFDM) symbols, or Discrete Fourier Transform-spread-OFDM (Discrete Fourier Transform-spread-OFDM) symbols. , DFT-s-OFDM) symbols. Unless otherwise specified, the symbols in the embodiments of this application refer to time-domain symbols.

In order to facilitate the understanding of those skilled in the art, the technical concepts and some terms involved in the embodiments of the present application are explained below.

1), SRS. SRS is a kind of reference signal that can be used for estimating and channel selection of uplink channel quality, calculating SINR of uplink channel, and can also be used for acquisition of uplink channel coefficients. In a TDD scenario, uplink and downlink channels are reciprocal, and SRS can also be used to obtain downlink channel coefficients. As an example, when uplink channel quality measurement or estimation is required, the network device may indicate the frequency band to be measured (that is, one or more continuous RBs) to the terminal device through RRC signaling, if the channel condition of the terminal device When it is better, the network device will instruct the terminal device to send SRS in a non-frequency hopping manner, that is, the SRS sent at one symbol covers the entire frequency band to be measured; if the channel condition of the terminal device is poor, the SRS sent at one time covers the entire frequency band. The frequency band to be measured will result in a low SRS signal-to-noise ratio. At this time, the network device will instruct the terminal device to use frequency hopping to send SRS on multiple symbols respectively. The SRS sent by the terminal device each time only covers a part of the entire frequency band to be measured, and the RBs covered by the SRS sent each time can be called a frequency hopping sub-band.

For example, the bandwidth of the frequency band to be measured is 32 RBs, that is, the overall bandwidth of the SRS is 32 RBs. When the channel condition of the terminal device is good, as shown in Figure 2A, Figure 2A is the non-frequency hopping way to send the SRS Schematic diagram, in which each block represents 2 RBs in the frequency domain and 1 symbol in the time domain. The network device instructs the terminal device to send SRS on one symbol in a non-frequency hopping manner. At this time, the SRS frequency hopping bandwidth is the same as that of the SRS The overall bandwidth is equal to 32 RBs. When the channel condition of the terminal device is poor, as shown in Figure 2B, Figure 2B is a schematic diagram of sending SRS by frequency hopping, where each block represents 2 RBs in the frequency domain and 1 symbol in the time domain, then The network device will instruct the terminal device to use frequency hopping to send SRS. At this time, the SRS frequency hopping bandwidth is different from the overall SRS bandwidth. For example, the SRS frequency hopping bandwidth is 8 RBs. As shown in Figure 2B, the terminal device separately SRS is sent, each SRS sent covers only 8 RBs (that is, a frequency hopping sub-band), and SRS sent 4 times covers 32 RBs, that is, covers the entire frequency band to be measured.

Specific network devices can configure SRS resources for terminal devices through radio resource control (radio resource control, RRC) signaling. Information such as position, cycle used, comb teeth, cyclic shift value, sequence identity number (identity) and so on. The frequency domain position for sending the SRS is determined by a set of frequency domain parameters in the RRC signaling, and the frequency domain parameters include n _RRC , n _shift , B _SRS , C _SRS , and b _hop . The terminal device can determine the frequency domain position for sending SRS through these frequency domain parameters and the predetermined rules of the protocol (see Table 1 below), for example, determine the frequency domain start position of the frequency band for sending SRS (that is, the SRS frequency domain start position), send SRS The bandwidth of the frequency band (that is, the overall bandwidth of the SRS), the bandwidth of each frequency hopping sub-band in the frequency band for sending the SRS (that is, the SRS frequency hopping bandwidth), and whether it is necessary to send the SRS by frequency hopping.

Among them, n _RRC indicates the frequency domain starting position index of the user SRS, n _shift indicates the offset value that can be used for SRS transmission starting from the low frequency of the uplink system bandwidth, C _SRS is the index number of the SRS bandwidth configuration, and b _hop indicates the SRS The overall bandwidth, B _SRS indicates the SRS frequency hopping bandwidth.

Wherein, the starting position of the SRS frequency domain: the terminal device determines according to n _RRC , n _shift configured by the network device for the terminal device. For example, when the network device configures parameters for the terminal device as b _hop =0, C _SRS =9, and B _SRS =2. Then, the overall bandwidth of the SRS, the frequency hopping bandwidth of the SRS, and whether the terminal device sends the SRS by frequency hopping or not by frequency hopping can be determined according to the above parameters.

Determination of the overall bandwidth of the SRS: the terminal device determines the number of RBs m _SRS,b′ occupied by the overall SRS according to the parameters b _hop and C _SRS configured by the network device for the terminal device and Table 1, where b′=b _hop . For example, assuming b _hop =0, C _SRS =9, by looking up Table 1, the terminal device can determine m _SRS,b′ =32, and the overall SRS bandwidth is 32 RBs.

Determination of SRS frequency hopping bandwidth: The terminal device determines the number of RBs m _SRS,b occupied by the SRS on each symbol according to the parameters B _SRS and C _SRS configured by the network device for the terminal device and Table 1, that is, to determine the SRS every time The number of RBs corresponding to the frequency hopping sub-band, where b=B _SRS . For example, assuming B _SRS =2, C _SRS =9, by looking up Table 1, the terminal device can determine m _SRS,b =8, and determine that the SRS frequency hopping bandwidth is 8 RBs.

The process of determining whether the terminal device sends SRS by frequency hopping or non-frequency hopping:

When b _hop ≥ B _SRS , the terminal equipment does not enable the frequency hopping mode. That is, the terminal device sends the SRS in a non-frequency hopping manner. It should be understood that when the non-frequency hopping method is adopted, the SRS sent by the terminal device at one time covers the entire configured frequency band.

When b _hop <B _SRS , the terminal equipment enables the frequency hopping mode. That is, the terminal device sends the SRS in a frequency hopping manner.

In the above example, since b _hop =0 and B _SRS =2, b _hop <B _SRS . The terminal device sends the SRS through frequency hopping.

It should be understood that in the case of sending SRS in a frequency hopping manner, the terminal device sends SRSs on multiple symbols respectively, and the SRS sent each time only covers a part of the entire configured frequency band (that is, a frequency hopping sub-band). The SRS is sent multiple times in one frequency hopping period to cover the entire configured frequency band. Among them, the number of frequency hopping in a frequency hopping period is equal to the number of times the terminal device needs to send SRS in a frequency hopping period, and the frequency hopping number is the ratio of m _SRS,b' to m _SRS,b , that is, the number of frequency hopping can be expressed as:

Wherein, N _b is determined according to C _SRS and Table 1, and in Table 1, b in N _b is 0, 1, 2, and 3, respectively. For example, assuming b _hop =0, C _SRS =9, and B _SRS =2, the number of frequency hopping is equal to 2×2=4.

The frequency hopping method can follow the rules of the tree structure, and the frequency hopping method can ensure that the interval between the bandwidths occupied by two adjacent symbols is relatively large. Still taking the above b _hop = 0, C _SRS = 9, B _SRS = 2, the overall SRS bandwidth is 32 RBs, the SRS frequency hopping bandwidth is 8 RBs, and the number of frequency hopping is equal to 4 as an example, the frequency hopping method can be as shown in the figure 2B, where each block represents 2 RBs in the frequency domain and 1 symbol in the time domain, the terminal device sends SRSs on multiple symbols respectively, and the SRSs sent each time only cover one frequency hopping sub-band, The entire configured frequency band is covered by sending the SRS 4 times.

Table 1

2), partial SRS.

Partial SRS can also be called partial sounding, which is a way of sending SRS, and can increase the number of terminal devices sending SRS on the frequency band by sending SRS on some RBs of the frequency band. As shown in Figure 3, each long cell represents 1 RB in the frequency domain. For a frequency band containing 8 RBs, before sending the SRS in an unused part of the SRS, terminal device 1 sends on the frequency band containing 8 RBs. SRS, after using partial SRS to send SRS, terminal device 1 can divide the frequency band into P _F sub-frequency bands according to the partial bandwidth factor P _F indicated by the network device, each sub-frequency band contains 8 divided by P _F RBs, terminal device 1 Occupy one of the sub-bands to send SRS. In Figure 3, the _PF is 4, each sub-band contains 2 RBs, and terminal device 1 occupies the sub-band at position 0 to send SRS. For the sub-bands at positions 1, 2 and 3 frequency band, the network device may instruct other terminal devices to send SRS, increase the number of terminal devices that send SRS on the frequency band, and increase the SRS capacity on the frequency band.

Using partial SRS to send SRS can also realize sending SRS on some RBs of the frequency hopping sub-band, as shown in Figure 4, each block represents 2 RBs in the frequency domain and 1 symbol in the time domain, The 8 RBs on each symbol are a frequency hopping subband. The partial bandwidth factor _PF indicated by the network device can further divide the frequency hopping subband on each symbol into _PF subbands, and each terminal device occupies one of them. The SRS is sent on the sub-frequency band. In FIG. 4, _PF is 4 as an example, and a maximum of 4 terminal devices can be allowed to send the SRS on the frequency-hopping sub-band. It should be understood that when only one terminal device occupies one sub-frequency band in Figure 4, the sub-frequency band occupied by the terminal device indicated by the network device to send the SRS can be located in any part of the frequency hopping sub-band, as shown in Figure 5, can be located in the frequency hopping sub-band. The middle part, first half or second half of the frequency subband.

At present, when the partial SRS is used to send the SRS, the determination of the frequency domain position and bandwidth of the RB (that is, the sub-band for sending the SRS) in the frequency band for the terminal device to send the SRS, usually adopts one of the following methods:

Assuming that the bandwidth of the frequency band is M RB (the candidate value of M is a multiple of 4), the partial SRS supports a terminal device in it

SRS is sent on consecutive RBs, that is, the bandwidth supporting a sub-band is

RB, the starting position of the RB occupied by the terminal equipment to send the SRS is the first M RB

RB, where the value range of k _F is 0, 1, 2, ..., P _F -1. In a possible implementation manner, the value of _PF may be 2, 3, 4 or 8. For example, M=20, P _F =4, when k _F =0, the partial SRS supports sending SRS on RB0 to RB4, and when k _F =1, the partial SRS supports sending SRS on RB5 to RB9, to And so on.

When the number of RBs M corresponding to the bandwidth of the frequency band is not an integer multiple of _PF , the number of RBs actually included in the sub-band is not an integer. One solution is to

Carry out rounding, for example M=20, P _F =3, can be right

It is rounded down to 6, that is, the bandwidth of the sub-band is 6 RBs. In addition, some companies have also proposed to limit the number of RBs in sub-bands to an integer multiple of 4. One method is to

Round to a multiple of 4, for example, M=20, P _F =4, you can

It is rounded down to 4, that is, the bandwidth of the sub-band is 4 RBs.

However, whether it is

Rounding to an integer or a multiple of 4 will result in no SRS transmission on some RBs, resulting in waste of resources.

The number of RBs corresponding to the frequency band M=20, P _F =3, for

Round down to 6 as an example, that is, the sub-band bandwidth is 6 RBs, and a terminal device sends SRS on 6 RBs, as shown in Figure 6, where each long cell represents 1 RB in the frequency domain, Only 18 of the 20 RBs can be allocated to 3 terminal devices to send SRS, and 2 RBs will be idle RBs, which cannot be used to send SRS.

The number of RBs corresponding to the frequency band M=20, P _F =4, for

Round down to 4 as an example, that is, the sub-band bandwidth is 4 RBs, and a terminal device sends SRS on 4 RBs, as shown in Figure 7, where each long cell represents 1 RB in the frequency domain, Only 16 of the 20 RBs can be allocated to 4 terminal devices to send SRS, and 4 RBs will be idle and cannot be used to send SRS.

The present application can solve the problem of low resource allocation utilization rate and resource waste when allocating resources for SRS transmission.

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. In each embodiment of the present application, the reference signal can be SRS, and can also be other reference signals, such as DMRS. Take SRS resources as an example. That is, all the SRSs described later can be replaced by reference signals.

Fig. 8 is a schematic diagram of a transmission method provided by the embodiment of the present application, the method includes:

S801: The terminal device receives SRS configuration information from the network device.

S802: The terminal device determines a first frequency domain resource according to the SRS configuration information, where the first frequency domain resource is one of multiple frequency domain resources, and the multiple frequency domain resources are respectively the second frequency domain resources A part of resources, and bandwidths of at least two frequency domain resources among the multiple frequency domain resources are not equal.

S803: The terminal device sends an SRS on the first frequency domain resource, and the network device receives the SRS on the first frequency domain resource.

In this embodiment of the present application, the second frequency domain resource may be a segment of continuous frequency domain resources. For example, the second frequency domain resource may be a plurality of continuous RBs in the frequency domain. In the SRS scenario, the second frequency domain resource may refer to a frequency band, then multiple frequency domain resources may refer to multiple subbands existing on the second frequency domain resource, and the first frequency domain resource may be indicated by the network device to the terminal device One subband used to transmit SRS.

The parameters for determining the second frequency domain resource and the first frequency domain resource may be sent by the network device to the terminal device through SRS configuration information. As an example, the SRS configuration information may include information about the starting frequency domain location and bandwidth of the second frequency domain resource, and may also include a partial bandwidth factor _PF and a partial bandwidth frequency domain location factor K _F , where P _F Indicates the number of multiple frequency domain resources, K _F indicates _{the position of the first frequency domain resource in the multiple frequency domain resources, and the first frequency domain resource can be determined in the second frequency domain resources according to PF and K F} _. The SRS configuration information may be sent from the network device to the terminal device through RRC signaling carrying the SRS configuration information, media access control layer (media access control, MAC) control element (control element, CE) signaling, and the like.

Taking the number M of RBs _{included in the second frequency domain resource as equal to 20, and the PF and K F} _included in the SRS configuration information as 0 and 3 respectively as an example, _PF represents the number of multiple frequency domain resources N is 3, and M is divided by N is rounded down to 6. If each frequency domain resource includes RBs divided by N rounded down, and the second frequency domain resource is divided into multiple frequency domain resources, each frequency domain resource includes 6 RBs, there will be 2 RBs that cannot be assigned to multiple frequency domain resources, no matter which frequency domain resource is the first frequency domain resource indicated by K _F , there will be 2 RBs that cannot be allocated for terminal equipment. When multiple terminal devices use frequency division multiplexing to transmit SRS in the second frequency domain resource, that is, when multiple terminal devices transmit SRS in different frequency domain resources, there will also be two RBs that cannot be allocated to the terminal device. The problem of wasting resources.

Therefore, in order to make full use of frequency domain resources and avoid resource waste, in the embodiment of the present application, there are at least two frequency domain resources with unequal bandwidths among multiple frequency domain resources, and the sum of the bandwidths is equal to the bandwidth of the second frequency domain resources . For example, when the number M of RBs included in the second frequency domain resource is equal to 20 and the number of multiple frequency domain resources is 3, the number of RBs included in two frequency domain resources can be 6, and the number of RBs included in another frequency domain resource can be 8. The number of RBs included in the two frequency domain resources is 7, and the number of RBs included in the other frequency domain resource is 6. Therefore, the 20 RBs included in the second frequency domain resource can be divided into 3 frequency domain resources.

It should be noted that, in order to prevent multiple terminal devices from sending SRSs in the second frequency domain resource using frequency division multiplexing (that is, when multiple terminal devices send SRSs on different frequency domain resources), multiple terminal devices send SRS Frequency domain resource transmission conflicts, there are no overlapping RBs in the multiple frequency domain resources divided by the second frequency domain resource, that is, the above multiple frequency domain resources do not overlap with each other, multiple terminal devices in the second frequency domain resources divided When different frequency domain resources send SRS, it will not happen that two or more terminal devices send SRS on one RB.

In addition, in order to reduce the implementation complexity, there may be only two different bandwidths in the above-mentioned multiple frequency domain resources, such as the first bandwidth and the second bandwidth, and the bandwidth of any one of the above-mentioned multiple frequency domain resources is the second bandwidth. The first bandwidth or the second bandwidth.

As an example: the above-mentioned multiple frequency domain resources may include X frequency domain resources with the first bandwidth and Y frequency domain resources with the second bandwidth, wherein each frequency domain resource with the first bandwidth includes Divide M by N and take up the number of RBs that are integer multiples of L, and each frequency domain resource whose bandwidth is the second bandwidth includes M divided by N and take down the number of RBs that are an integer multiple of L, and M is the number of RBs included in the second frequency domain resource The number of RBs, X is the remainder of dividing M by L and N, Y is the difference between N and X, L is an integer greater than or equal to 1, and N is the number of multiple frequency domain resources.

Take SRS configuration information including _PF ( _PF = 3), M is 20, and L is 1 as an example, _PF represents the number of multiple frequency domain resources N is 3, and the remainder of dividing M by L and dividing by N ( That is, M/Lmod N) is 2, M divided by N is rounded up to 7, M divided by N is rounded down to 6, and the second frequency domain resources include 2 frequency domain resources with a bandwidth of 7 RBs and One frequency domain resource with a bandwidth of 6 RBs. In this way, when M(20) cannot be divisible by _PF (3), M RBs are divided into _PF frequency domain resources. When using partial SRS to send SRS, _PF frequency domain resources can be allocated to If P is used by _F terminal devices, then all M RBs can have terminal devices to send SRS, there will be no idle RBs that cannot be allocated to terminal devices for SRS transmission, and there will be no waste of resources. At the same time, through such an allocation method, it can be ensured that the bandwidth difference between different frequency domain resources is as small as possible, so that the bandwidth of each frequency domain resource is evenly distributed as much as possible, because the bandwidth of the frequency domain resource may affect the SRS transmission rate of the terminal device. Performance. When allocating frequency domain resources to different terminal devices, the bandwidth of each frequency domain resource should be evenly distributed as much as possible so that the SRS transmission performance of each terminal device can be balanced and optimized.

In addition, the distribution rule of the distribution of the multiple frequency domain resources in the second frequency domain resources may be from the low frequency to the high frequency of the second frequency domain resources, and the number of RBs included in the multiple frequency domain resources shows an increasing or decreasing trend; or For any two frequency domain resources among the plurality of frequency domain resources, the number of RBs included in the frequency domain resource whose frequency domain position is located on the edge side of the second frequency domain resource is greater than or equal to that of the frequency domain resource whose frequency domain position is located on the center side of the second frequency domain resource The number of RBs included, that is, the position of multiple frequency domain resources in the second frequency domain resource is position i, from the low frequency to the high frequency of the second frequency domain resource, i is sequentially 0, 1, ..., N-1, N is the number of multiple frequency domain resources; wherein, when i is an integer less than or equal to (N-1) divided by 2 and rounded down and greater than 0, the frequency domain resource corresponding to position i-1 includes RB The number is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i; when i is an integer greater than (N-1) divided by 2 and rounded down to an integer less than N-1, the frequency domain resource corresponding to position i+1 The number of RBs included is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i.

Specifically, the frequency domain resource distribution rule may be pre-configured in the terminal device and the network device through a protocol, or may be indicated to the terminal device by the network device.

Taking the distribution rule of the frequency domain resource as an example from the low frequency to the high frequency of the second frequency domain resource, and the number of RBs included in the multiple frequency domain resources shows an increasing trend, the distribution of the above three frequency domain resources in the second frequency domain resource As shown in Figure 9, each long cell represents 1 RB in the frequency domain, and the 3 bandwidths are frequency domain resources of 6 RBs, 7 RBs, and 7 RBs respectively. The frequency domain positions where the high frequencies are located are respectively position 0, position 1 and position 2.

When the SRS configuration information includes K _F =0, the first frequency domain resource is the 6 RBs corresponding to position 0, the terminal device sends SRS on the 6 RBs corresponding to position 0, and the network device transmits SRS on the 6 RBs corresponding to position 0 Receive the SRS sent by the terminal device. It should be understood that RB is the basic unit of frequency domain scheduling. Taking 5G as an example, one RB contains 12 subcarriers. A resource element (resource element, RE) occupies one symbol in the time domain and one subcarrier in the frequency domain, and the terminal device sends SRS on the first frequency domain resource, which can occupy all The SRS sent by the RE may also be sent in a comb-tooth manner, and the SRS is sent by equally spaced REs (that is, equally spaced subcarriers) on all RBs occupying the first frequency domain resource. As an example: when the terminal device occupies the 6 RBs corresponding to the above position 0 to send SRS, it can occupy all the REs on the 6 RBs to send SRS, or it can use comb teeth to send SRSs, occupying equally spaced REs on the 6 RBs To send SRS, for example, when the comb tooth value is 2, the odd subcarriers in 6 RBs are one comb tooth, and the even subcarriers in 6 RBs are one comb tooth, then the odd subcarriers or even subcarriers in 6 RBs can be occupied Send SRS.

Of course, the location distribution of the multiple frequency domain resources in the second frequency domain resource may also be specified according to the location priority corresponding to the _PF . Wherein, the location priority corresponding to the _PF can be pre-configured in the terminal device and the network device through a protocol or the like, and can also be indicated to the terminal device by the network device. Taking _PF = 3 as an example, the position priority can be 1, 2, 0, indicating that the number of RBs of the frequency domain resource corresponding to position 1 in the second frequency domain resource is greater than or equal to the number of RBs of the frequency domain resource corresponding to position 2, The number of RBs of the frequency domain resource corresponding to position 2 is greater than or equal to the number of RBs of the frequency domain resource corresponding to position 0, then the distribution of the above three frequency domain resources in the second frequency domain resource is shown in FIG. 9 .

Still taking _PF = 3 as an example, the position priority can also be 0, 2, 1, indicating that the number of RBs of the frequency domain resource corresponding to position 0 in the second frequency domain resource is greater than or equal to the RB of the frequency domain resource corresponding to position 2 number, the number of RBs of frequency domain resources corresponding to position 2 is greater than or equal to the number of RBs of frequency domain resources corresponding to position 1, then the distribution of the above three frequency domain resources in the second frequency domain resources is shown in FIG. 10 . Each long cell represents 1 RB in the frequency domain, and the 3 bandwidths are frequency domain resources of 7 RBs, 6 RBs, and 7 RBs respectively. In the second frequency domain resources, the frequencies from low frequency to high frequency are respectively The domain positions are position 0, position 1 and position 2, respectively.

For RBs without SRS transmission, the network device cannot directly obtain the channel state information (CSI) of the RB based on the SRS sent by the terminal device on the RB, and the network device can extrapolate based on the CSI of the RB with SRS transmission Or interpolation, that is, based on the CSI of the RB with SRS transmission, the closer the distance between the RB without SRS transmission and the RB with SRS transmission, the greater the channel correlation, and the estimated CSI of the RB without SRS transmission more accurate. Referring to Figure 9, it can be seen that when the terminal device sends SRS on the RB corresponding to position 0, the CSI of the RB corresponding to position 1 and position 2 needs to be obtained by calculating based on the CSI result of the RB corresponding to position 0, and there is SRS transmission at this time The maximum interval between RBs and RBs without SRS transmission is 13 RBs. Referring to FIG. 10, it can be seen that when the terminal device transmits SRS on the RB corresponding to position 0 or position 2, the interval between RBs with SRS transmission and RBs without SRS transmission is the largest, which is 12 RBs.

It can be seen from the above content that when the frequency domain resource distribution rules or the location priorities corresponding to _PF are set differently, when the terminal device uses a certain frequency domain resource in the second frequency domain resources to transmit SRS, the RB with SRS transmission and the RB without There is a difference in the maximum interval of RBs with SRS transmission, and the closer the interval between RBs without SRS transmission and RBs with SRS transmission, the greater the channel correlation, and the more accurate the calculated CSI of RBs without SRS transmission is. Therefore, in some embodiments, in order to obtain better CSI extrapolation performance when the terminal device occupies the frequency domain resource on the edge side of the second frequency domain resource to send SRS, the frequency domain resource distribution rule or the position priority corresponding to _PF , can satisfy any two frequency domain resources among the plurality of frequency domain resources, and the number of RBs included in the frequency domain resource whose frequency domain position is located on the edge side of the second frequency domain resource is greater than or equal to that of the frequency domain resource located on the center side of the second frequency domain resource The condition of the number of RBs included in the frequency domain resources.

Take SRS configuration information including _PF ( _PF = 3), M is 80, and L is 4 as an example, _PF indicates that the number of multiple frequency domain resources N is 3, M is divided by L and divided by the remainder of N ( That is, M/L mod N) is 2, M is divided by N and the integral multiple of 4 is 28, and M is divided by N and the integer multiple of 4 is 24, then the second frequency domain resource includes 2 bandwidths of 28 RB frequency domain resources and 1 frequency domain resource with a bandwidth of 24 RBs. Assuming that the location priority corresponding to _PF = 3 is 0, 2, 1 or 2, 0, 1, the distribution of the 3 frequency domain resources in the second frequency domain resource is shown in Figure 11, where each long cell is in The frequency domain represents 4 RBs, and the frequency domain resources of the 3 bandwidths are 28 RBs, 28 RBs, and 24 RBs respectively. In the second frequency domain resources, the frequency domain positions from low frequency to high frequency are respectively positions 0, Position 2 and Position 1. If K _F =0 included in the SRS configuration information, the terminal device sends the SRS on the 28 RBs corresponding to position 0, and the network device receives the SRS sent by the terminal device on the 28 RBs corresponding to position 0. At this time, the CSI of the RB corresponding to position 1 and position 2 needs to be obtained by calculating the CSI of the RB corresponding to position 0. At this time, the interval between the RB with SRS transmission and the RB without SRS transmission is 51 RB at most.

In contrast, as shown in Figure 12, when any two frequency domain resources among the multiple frequency domain resources are not satisfied, the number of RBs included in the frequency domain resource whose frequency domain position is located on the edge side of the second frequency domain resource is greater than or equal to that of the frequency domain resource. When the number of RBs included in the frequency domain resource located at the center side of the second frequency domain resource is the condition, the priorities of different positions are 2, 1, and 0. At this time, the maximum interval between RBs with SRS transmission and RBs without SRS transmission is 55 RBs. However, according to the manner in FIG. 11 , the maximum interval is 51 RBs, and 4 RBs are reduced, and a terminal device that sends SRS to RBs included in the frequency domain resources occupying position 0 can obtain better CSI extrapolation performance.

Taking the SRS configuration information including _PF ( _PF =4), M is 20, and L is 4 as an example, _PF represents the number of multiple frequency domain resources N is 4, and the remainder of dividing M by L and N is 1. Divide M by N and take an integer multiple of 4 upwards to be 8, and divide M by N and take an integer multiple of 4 downwards to be 4, then the second frequency domain resource includes 1 frequency domain resource with a bandwidth of 8 RBs and 3 A frequency domain resource with a bandwidth of 4 RBs. The priority of the position corresponding to _PF = 4 is 0, 3, 1, 2, satisfying any two frequency domain resources among multiple frequency domain resources, and the frequency domain resources included in the frequency domain resources whose frequency domain position is located on the edge side of the second frequency domain resource When the number of RBs is greater than or equal to the condition that the number of RBs included in the frequency domain resource whose frequency domain position is located at the center side of the second frequency domain resource, as shown in Figure 13, where each long cell represents 1 RB in the frequency domain, the terminal When the device sends SRS on the 8 RBs corresponding to position 0, the maximum interval between RBs with SRS sent and RBs without SRS sent is 11 RBs. The priority of the position corresponding to _PF = 4 is 1, 2, 0, 3, which does not satisfy any two frequency domain resources among the multiple frequency domain resources, and the frequency domain resources whose frequency domain position is located on the edge side of the second frequency domain resource include When the number of RBs in the frequency domain is greater than or equal to the condition that the number of RBs included in the frequency domain resource whose frequency domain position is located at the center side of the second frequency domain resource, as shown in Figure 14, when the terminal device sends the SRS on the 4 RBs corresponding to position 0 , the maximum interval between RBs with SRS transmission and RBs without SRS transmission is 15 RBs, and 4 RBs are added. The terminal equipment also occupies the frequency domain resource corresponding to position 0 on the edge side of the second frequency domain resource to transmit SRS, but CSI extrapolation performance has decreased.

In some other implementations, the SRS configuration information may also include bandwidth indication information and resource location indication information, the bandwidth indication information may be used to indicate the bandwidth of multiple frequency domain resources, and the resource location indication information may be used to indicate that the first frequency domain resource is in multiple location in the frequency domain resource. The terminal device may determine the first frequency domain resource according to the bandwidth indication information and the frequency domain location information.

As an example, suppose that the number of RBs included in the second frequency domain resource is 20, and the bandwidth indication information indicates 3 bandwidths, which are 7 RBs, 6 RBs, and 7 RBs in sequence. As shown in FIG. 10 , the second frequency domain resource From low frequency to high frequency, the domain resources are frequency domain resources with a bandwidth of 7 RBs, frequency domain resources with a bandwidth of 6 RBs, and frequency domain resources with a bandwidth of 7 RBs. The frequency domain positions of the three frequency domain resources from low frequency to high frequency in the second frequency domain resource are position 0, position 1 and position 2 respectively. Assuming that the resource position indication information is 1, the first frequency domain resource is the 6 RBs corresponding to position 1, the terminal device sends SRS on the 6 RBs corresponding to position 1, and the network device receives the terminal on the 6 RBs corresponding to position 1 The SRS sent by the device. It should be noted that, assuming that the number of multiple frequency domain resources is N, the value of the resource location indication information can be any value in {0, 1, 2, . . . , N-1}.

It can be seen from Figures 9 to 14 that when the reference signal transmission method of the embodiment of the present application is adopted, when the number of RBs included in the second frequency domain resource cannot be divisible by the number of multiple frequency domain resources divided by the second frequency domain resource, neither There will be RB idle, which improves resource utilization.

In an optional implementation manner, the reference signal transmission method provided in the embodiment of the present application may be applied to a frequency hopping scenario.

As an example, the SRS configuration information may include frequency domain parameters n _RRC , n _shift , B _SRS , C _SRS , b _hop and other frequency domain parameters. After the terminal device receives the SRS configuration information from the network device, it can determine the starting position of the SRS in the frequency domain and the overall bandwidth of the SRS m SRS _,b′ according to the frequency domain parameters n _RRC , n _shift , B _SRS , C _SRS , b _hop , SRS frequency hopping bandwidth m _SRS,b and other information. And the RB corresponding to each frequency hopping of the SRS can be determined according to the frequency hopping rule (or frequency hopping pattern) observed by the frequency hopping manner. The overall SRS bandwidth is 32 RBs, the SRS frequency hopping bandwidth is 8 RBs, and the frequency hopping method follows the rules of the tree structure. Without considering the starting position of the SRS frequency domain, the SRS frequency hopping pattern is shown in Figure 2B As shown, each block represents 2 RBs in the frequency domain and 1 symbol in the time domain.

In some implementations, the second frequency domain resources may refer to RBs corresponding to SRS frequency hopping (that is, m _{SRSs determined by the above frequency domain parameters, b} RBs). For example, when the overall bandwidth of the SRS is equal to the frequency hopping bandwidth of the SRS, that is, m _SRS,b' = m _SRS,b , the terminal device sends the SRS in a non-frequency hopping manner, and there is only one frequency hopping sub-band at this time, which can be The frequency hopping sub-band is used as a second frequency domain resource, and the first frequency domain resource is determined in the second frequency domain resource. For example: when b _hop =0, C _SRS =0, B _SRS =2, referring to Table 1, it can be seen that the overall SRS bandwidth and the SRS frequency hopping bandwidth are equal to 4 RBs, as shown in Figure 15A, where each block is The domain represents 2 RBs, and the time domain represents 1 symbol. At this time, the terminal device sends SRS in a non-frequency hopping manner, and the 4 RBs determined by the above frequency domain parameters (such as the 4 RBs identified by the letter A in Figure 15A RB) is used as the second frequency domain resource, and the first frequency domain resource is determined in the second frequency domain resource.

When the overall bandwidth of the SRS is not equal to the frequency hopping bandwidth of the SRS, the terminal device transmits the SRS in a frequency hopping manner. At this time, there are multiple frequency hopping sub-bands, and each frequency hopping sub-band includes m _{SRS, b} RBs. At this time, each Each of the frequency hopping sub-bands can be used as the second frequency domain resource, and all of them can determine the first frequency domain resource. That is to say, the reference signal transmission method provided in the embodiment of the present application is applicable to each frequency hopping sub-band. For example: when b _hop =0, C _SRS =9, and B _SRS =2, referring to Table 1, it can be seen that the overall SRS bandwidth is 32 RBs, and the SRS frequency hopping bandwidth is 8 RBs, as shown in Figure 15B, where each block It represents 2 RBs in the frequency domain and 1 symbol in the time domain. At this time, the terminal device transmits SRS in a frequency hopping manner. There are 4 SRS frequency hopping sub-bands, and each SRS frequency hopping sub-band (as shown in Figure 15B The 8 RBs identified by any one of the letters AD can be used as the second frequency domain resource, and can determine the first frequency domain resource.

In some implementations, SRS can be sent repeatedly on multiple symbols. Repeated transmission means: SRS is sent on multiple consecutive symbols, the SRS on each symbol occupies the same RB, and the sequence of SRS used on multiple symbols Can be the same or different. At this time, the second frequency domain resource may be an RB corresponding to SRS frequency hopping on any symbol. For example, when the number of SRS repetitions is 2 and the overall SRS bandwidth is equal to the SRS frequency hopping bandwidth, that is, m _SRS,b' = m _SRS,b , the terminal device sends SRS in a non-frequency hopping plus repetition mode, and the SRS occupies a continuous On the two symbols, the number of RBs and the frequency domain positions corresponding to the SRS frequency hopping on each symbol are the same, and the RBs corresponding to the SRS frequency hopping on each symbol can be used as the second frequency domain resource and determined in the second frequency domain resource out of the first frequency domain resource. For example: when the number of repetitions is 2, b _hop =0, C _SRS =0, B _SRS =2, referring to Table 1, it can be known that the overall SRS bandwidth and the SRS frequency hopping bandwidth are equal to 4 RBs, as shown in Figure 16A, where Each square represents 2 RBs in the frequency domain and 1 symbol in the time domain. At this time, the terminal device sends SRS in a non-frequency hopping manner, and sends SRS on two consecutive symbols, then any The 4 RBs corresponding to SRS frequency hopping on one symbol (such as the 4 RBs identified by the alphanumeric combination A1 or A2 in Figure 16A) can be used as the second frequency domain resources, and the first frequency domain resources are determined in the second frequency domain resources. resource.

When the overall SRS bandwidth and the SRS frequency hopping bandwidth are not equal and the SRS is sent repeatedly, the terminal device sends the SRS in the form of frequency hopping plus repetition. At this time, there are multiple frequency hopping sub-bands, and each frequency hopping sub-band occupies multiple symbols. Each symbol includes m _{SRS and b} RBs with the same frequency domain position. At this time, the m _{SRS and b} RBs corresponding to each frequency hopping sub-band on any symbol can be used as the second frequency domain resources, and can be determined A first frequency domain resource. That is to say, the reference signal transmission method provided in the embodiment of the present application is applicable to each frequency hopping sub-band. For example: when the number of repetitions is 2, b _hop = 0, C _SRS = 9, and B _SRS = 2, referring to Table 1, it can be seen that the overall SRS bandwidth is 32 RBs, and the SRS frequency hopping bandwidth is 8 RBs, as shown in Figure 16B , where each square represents 2 RBs in the frequency domain and 1 symbol in the time domain. At this time, the terminal device sends SRS in frequency hopping mode. There are 4 SRS frequency hopping sub-bands, and each sub-band occupies two consecutive Each symbol includes 8 RBs with the same frequency domain position. At this time, each sub-band corresponds to 8 RBs on any symbol (as shown in any one of the alphanumeric combinations A1-D2 in Figure 16B). All 8 RBs) can be used as the second frequency domain resource, and can all determine the first frequency domain resource.

In addition, it should be understood that the embodiment of the present application does not limit the specific form of the SRS configuration information, and it only needs that the configuration information can indicate the size and location of the first frequency domain resource.

In addition, when the second frequency domain resource includes multiple frequency domain resources, except for the first frequency domain resource occupied by the terminal equipment to send the SRS, the network equipment can schedule other frequency domain resources for use by other terminal equipment, or use Other frequency domain resources are idle, that is, they are not scheduled for use by any terminal equipment.

From the perspective of improving the utilization rate of frequency domain resources, the methods for determining frequency domain resources when using partial SRS to send SRS are improved. In some implementations, idle RBs may also be used to suppress out-of-band interference, so as to obtain better transmission performance, which will be introduced in conjunction with specific implementations below.

Fig. 17 is a schematic diagram of another reference signal transmission method provided by the embodiment of the present application, the method includes:

S1701: The terminal device receives SRS configuration information from the network device.

S1702: The terminal device determines a first frequency domain resource according to the SRS configuration information, where the first frequency domain resource is one of multiple frequency domain resources, and the multiple frequency domain resources are respectively the second frequency domain resources A part of resources, the second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource in order from low frequency to high frequency.

S1703: The terminal device sends an SRS on the first frequency domain resource, and the network device receives the SRS on the first frequency domain resource.

In this embodiment of the application, the second frequency domain resource is also a continuous frequency domain resource. For example, the second frequency domain resource can be a plurality of continuous RBs in the frequency domain. In the SRS scenario, the second frequency domain resource may refer to a frequency band, then multiple frequency domain resources may refer to multiple subbands existing on the second frequency domain resource, and the first frequency domain resource may be indicated by the network device to the terminal device One subband used to transmit SRS. For specific implementation of determining the second frequency domain resource, reference may be made to the implementation of determining the second frequency domain resource in the method shown in FIG. 8 , and details will not be repeated here.

For the first frequency domain resource used for sending the SRS, the terminal device may determine it according to parameters in the SRS configuration information from the network device. Wherein, the SRS configuration information may include _PF and _KF , _PF may indicate the number of multiple frequency domain resources, and K _F may indicate the position of the first frequency domain resource among the multiple frequency domain resources. The terminal device may determine the first frequency domain resource from the second frequency domain resource according to _PF and _KF .

Taking the number M of RBs _{included in the second frequency domain resource as equal to 20, and the PF and K F} _included in the SRS configuration information as 0 and 3 respectively as an example, _PF represents the number of multiple frequency domain resources N is 3, and M is divided by N is rounded down to 6. If each frequency domain resource includes RBs divided by N rounded down, and the second frequency domain resource is divided into multiple frequency domain resources, each frequency domain resource includes 6 RBs, there will be 2 RBs that cannot be assigned to multiple frequency domain resources, no matter which frequency domain resource is the first frequency domain resource indicated by K _F , there will be 2 RBs that cannot be allocated For terminal devices, when multiple terminal devices use frequency division multiplexing to transmit SRS in the second frequency domain resource (that is, when multiple terminal devices transmit SRS in different frequency domain resources), there will also be 2 RBs that cannot be allocated to There is a problem of waste of resources in the use of terminal equipment.

Therefore, in order to make full use of frequency domain resources and avoid waste of resources, in the embodiment of the present application, while dividing multiple frequency domain resources from the second frequency domain resources, it is also possible to The frequency side divides a first idle frequency domain resource and a second idle frequency domain resource respectively. For example, the RBs that cannot be allocated to the terminal equipment are divided into the first idle frequency domain resource and the second idle frequency domain resource. The out-of-band leakage generated by the SRS sent by the small terminal device causes interference to other terminal devices transmitting data on frequency domain resources adjacent to the second frequency domain resource, or reduces interference to other communication systems. It should be understood that the above-mentioned first idle frequency domain resources and second idle frequency domain resources refer to frequency domain resources (such as RBs) that the network equipment cannot allocate to the terminal equipment for SRS transmission, or that the network equipment does not allocate to The frequency domain resource used by the terminal device for SRS transmission.

It should be noted that, in order to prevent multiple terminal devices from sending SRSs in the second frequency domain resource using frequency division multiplexing (that is, when multiple terminal devices send SRSs on different frequency domain resources), multiple terminal devices send SRS Frequency domain resource transmission conflicts, the second frequency domain resource is divided into the first idle frequency domain resource, multiple frequency domain resources, and RBs that do not overlap with the second idle frequency domain resource, that is, the first idle frequency domain The domain resources and the second idle frequency domain resources do not overlap with each other, and the sum of the bandwidths is equal to the bandwidth of the second frequency domain resources.

As an example: each of the multiple frequency domain resources may include RBs divided by M divided by N and taken down to an integer multiple of L, where M is the number of RBs included in the second frequency domain resource, and L is greater than or equal to An integer of 1, and N is the number of multiple frequency domain resources; when O can be divisible by 2, the first idle frequency domain resources and the second idle frequency domain resources each include RBs divided by 2; when O cannot be divided by 2 When divisible by an integer, the first idle frequency domain resource includes RBs whose number is rounded up by dividing 0 by 2, and the second idle frequency domain resource includes RBs whose number is rounded up by dividing 0 by 2. Wherein, O is equal to the value of L multiplied by the remainder of M divided by L and divided by N, that is, equal to the number of remaining RBs in the second frequency domain resource except RBs occupied by multiple frequency domain resources. In this way, both the low-frequency edge side and the high-frequency edge side of the second frequency domain resource have more idle RBs to prevent out-of-band leakage from causing other terminal devices to transmit data on adjacent frequency domain resources of the second frequency domain resource. interference.

Take SRS configuration information including _PF ( _PF = 3), M is 20, and L is 1 as an example, _PF represents the number of multiple frequency domain resources N is 3, and the remainder of dividing M by L and dividing by N ( That is, M/L mod N) is 2, M divided by N is rounded down to 6, and the number of remaining RBs in the second frequency domain resource is 2 except for the RBs occupied by multiple frequency domain resources, then O 2 is divisible by 2. As shown in Figure 18A, each long cell represents 1 RB in the frequency domain, and the second frequency domain resource is the first idle frequency domain resource with a bandwidth of 1 RB, and 3 bandwidths from low frequency to high frequency. There are 6 RB frequency domain resources and a second idle frequency domain resource with a bandwidth of 1 RB. Among them, the frequency domain positions of the three frequency domain resources with a bandwidth of 6 RBs in the second frequency domain resources from low frequency to high frequency are respectively position 0, position 1 and position 2, if K _F included in the SRS configuration information =0, the first frequency domain resource is the 6 RBs corresponding to position 0, the terminal device sends SRS on the 6 RBs corresponding to position 0, and the network device receives the SRS sent by the terminal device on the 6 RBs corresponding to position 0.

Compared with Figure 6, although M is 20, _PF is 3, and there are 2 idle RBs, but in Figure 18A, there are 1 idle RB on the low-frequency edge side and high-frequency edge side of the second frequency domain resource , can simultaneously reduce the out-of-band leakage caused by the terminal device sending SRS from the low-frequency edge side and the high-frequency edge side of the second frequency domain resource to other terminal devices transmitting data on adjacent frequency domain resources of the second frequency domain resource, etc. interference, or to reduce interference to other communication systems.

Take the SRS configuration information including _PF ( _PF = 5), M is 28, and L is 1 as an example, _PF represents the number of multiple frequency domain resources N is 5, M is divided by L and the remainder of dividing by N ( That is, M/L mod N) is 3, M divided by N is rounded down to 5, and the number of remaining RBs in the second frequency domain resource is 2 except for RBs occupied by multiple frequency domain resources, then O Since 3 is not divisible by 2, O divided by 2 rounds up to 2 and down to 1. As shown in FIG. 18B, each long cell represents 1 RB in the frequency domain, and the second frequency domain resources are the first idle frequency domain resource with a bandwidth of 2 RBs, and 5 bandwidths from low frequency to high frequency. There are frequency domain resources of 5 RBs and a second idle frequency domain resource with a bandwidth of 1 RB. Among them, the frequency domain resources of 5 frequency domain resources with a bandwidth of 5 RB are located in the frequency domain positions from low frequency to high frequency in the second frequency domain resource respectively as position 0, position 1, position 2, position 3 and position 4, if the SRS configuration If K _F =0 included in the information, the first frequency domain resource is the 5 RBs corresponding to position 0, the terminal device sends SRS on the 5 RBs corresponding to position 0, and the network device receives the terminal on the 5 RBs corresponding to position 0 The SRS sent by the device.

The above is based on the fact that when O is not divisible by 2, the first idle frequency domain resource includes RBs divided by 2 and the number of RBs rounded up by 2, and the second idle frequency domain resource includes RBs divided by 2 by 2 as an example. The number of RBs included in the first idle frequency domain resource and the second idle frequency domain resource is limited. In some implementations, it may also be that when O is not divisible by 2, the first idle frequency domain resources include RBs divided by 2 rounded down, and the second idle frequency domain resources include RBs divided by 2 rounded up. the RB.

In addition, it should be understood that, as shown in FIG. 18A or FIG. 18B , when the network device schedules a terminal device to send an SRS on the frequency domain resource (that is, RB) corresponding to position 0, the network device can also schedule other terminal devices to transmit SRS on the frequency domain resource corresponding to position 0. SRS is sent on the frequency domain resource corresponding to position 1 and/or position 2, and multiple terminal devices multiplex the second frequency domain resource to send SRS by means of frequency division multiplexing, that is, multiple terminal devices are configured with the same _PF value, but Configure different K _F . That is to say, according to the value of K _F , the terminal device can send SRS on the frequency domain resources corresponding to positions such as position 0, position 1 or position 2, but traverse all the values of K _F , and will not transmit SRS in the first idle frequency domain The SRS is sent on the resource and the second idle frequency domain resource.

Alternatively, take the SRS configuration information including _PF ( _PF = 3) and K _F (K _F = 0), M is 80, L is 4 as an example, _PF represents the number of multiple frequency domain resources N is 3 , M is divided by N and the integer multiple of 4 is 24, O is 8 and can be divisible by 2. As shown in FIG. 19, each long cell represents 4 RBs in the frequency domain, and the terminal device determines that the second frequency domain resources are the first idle frequency domain resource with a bandwidth of 4 RBs from low frequency to high frequency, Three frequency domain resources with a bandwidth of 24 RBs and a second idle frequency domain resource with a bandwidth of 4 RBs. Among them, three frequency domain resources with a bandwidth of 24 RB are respectively located in the frequency domain positions from low frequency to high frequency in the second frequency domain resources, which are respectively position 0, position 1 and position 2, and K _F =0 means that the first frequency domain resource are the 24 RBs corresponding to position 0, the terminal device sends the SRS on the 24 RBs corresponding to position 0, and the network device receives the SRS sent by the terminal device on the 24 RBs corresponding to position 0.

For the frequency domain resources corresponding to position 1 and/or position 2, the network device can also schedule other terminal devices to send SRS on the frequency domain resources corresponding to position 1 and/or position 2, that is, configure _KF for these terminal devices to be 1 or 2, but traversing all the values of K _F will not send SRS on the first idle frequency domain resource and the second idle frequency domain resource.

In some other implementations, the SRS configuration information may also include bandwidth indication information and resource location indication information. The bandwidth indication information may be used to indicate the bandwidth of the first idle frequency domain resource, multiple frequency domain resources, and the second idle frequency domain resource. The location indication information may be used to indicate the location of the first frequency domain resource among the multiple frequency domain resources. The terminal device may sequentially determine the first idle frequency domain resource, multiple frequency domain resources and the second idle frequency domain resource from the low frequency to the high frequency of the second frequency domain resource according to the multiple bandwidths indicated by the bandwidth indication information, and according to The resource location indication information determines the first frequency domain resource among the multiple frequency domain resources.

As an example, suppose the number of RBs included in the second frequency domain resource is 20, and the bandwidth indication information indicates 5 bandwidths, which are 1 RB, 6 RBs, 6 RBs, 6 RBs, and 1 RB in sequence, as As shown in FIG. 18A , the terminal device determines that the second frequency domain resources from low frequency to high frequency are the first idle frequency domain resource with a bandwidth of 1 RB, three frequency domain resources with a bandwidth of 6 RB, and a frequency domain resource with a bandwidth of 1 The second idle frequency domain resource of the RB. The frequency domain positions of the three frequency domain resources with a bandwidth of 6 RBs from low frequency to high frequency in the second frequency domain resources are position 0, position 1 and position 2 respectively. Assuming that the resource position indication information is 1, the first frequency domain resource is the 6 RBs corresponding to position 1, the terminal device sends SRS on the 6 RBs corresponding to position 1, and the network device receives the terminal on the 6 RBs corresponding to position 1 The SRS sent by the device. It should be noted that, assuming that the number of multiple frequency domain resources is N, the value of the resource location indication information can be any value in {0, 1, 2, . . . , N-1}.

In addition, it should be understood that in the present application, there may also be unequal bandwidths of at least two frequency domain resources among the multiple frequency domain resources. As an example, assuming that the number of RBs included in the second frequency domain resource is 80, and the bandwidth indication information indicates 5 bandwidths, the indicated 5 bandwidths may be 2 RBs, 24 RBs, 28 RBs, and 24 RBs in sequence. , 2 RBs, the terminal device determines that the second frequency domain resource from low frequency to high frequency is the first idle frequency domain resource with a bandwidth of 2 RBs, the frequency domain resource with a bandwidth of 24 RBs, and the frequency domain resource with a bandwidth of 28 RBs frequency domain resources, frequency domain resources with a bandwidth of 24 RBs, and second idle frequency domain resources with a bandwidth of 2 RBs. The frequency domain positions of the three frequency domain resources from low frequency to high frequency in the second frequency domain resource are position 0, position 1 and position 2 respectively. Assuming that the resource position indication information is 1, the first frequency domain resource is 24 RBs corresponding to position 1, the terminal device sends SRS on the 24 RBs corresponding to position 1, and the network device receives the terminal on the 24 RBs corresponding to position 1 The SRS sent by the device.

It can be seen from FIG. 18A, FIG. 18B and FIG. 19 that by adopting the reference signal transmission method of the embodiment of the present application, when there are idle RBs, the idle RBs can be respectively located on the low-frequency edge side and the high-frequency edge side of the second frequency domain resources, reducing The out-of-band leakage generated by the SRS sent by the small terminal device will cause interference to other terminal devices transmitting data on the adjacent frequency domain resources of the second frequency domain resource, or reduce the interference to other communication systems, and can also reduce the interference of other terminal devices on the second frequency domain resource. Transmission performance is improved by transmitting data on adjacent frequency domain resources of the second frequency domain resource or by interference caused by other communication systems to the terminal equipment when sending SRS.

It can be understood that, in order to implement the functions in the foregoing embodiments, the network device and the terminal device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software with reference to the units and method steps of the examples described in the embodiments disclosed in the present application. Whether a certain function is executed by hardware or computer software drives the hardware depends on the specific application scenario and design constraints of the technical solution.

FIG. 20 and FIG. 21 are schematic structural diagrams of possible communication devices provided by the embodiments of the present application. The communication device may also be referred to as a reference signal transmission device, and these communication devices may be used to realize the functions of the terminal device or the network device in the above method embodiments, and thus also realize the beneficial effects of the above method embodiments. In this embodiment of the application, the communication device may be one of the terminal devices 120a-120j as shown in FIG. 1, or it may be the

network device

110a or 110b as shown in FIG. 1, or it may be a terminal device Or a module (such as a chip) of a network device.

As shown in FIG. 20 , a communication device 2000 includes a processing unit 2010 and a transceiver unit 2020 . The communication apparatus 2000 is configured to realize the functions of the terminal device or the network device in the method embodiment shown in FIG. 8 or FIG. 17 above.

When the communication device 2000 is used to implement the functions of the terminal device in the method embodiment shown in FIG. 8:

A transceiver unit 2020, configured to receive reference signal configuration information from a network device;

The processing unit 2010 is configured to determine a first frequency domain resource according to the reference signal configuration information, the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively second frequency domain resources. A part of the frequency domain resources, and among the plurality of frequency domain resources, the bandwidths of at least two frequency domain resources are not equal, and the second frequency domain resource is a continuous frequency domain resource;

The transceiving unit 2020 is further configured to send a reference signal on the first frequency domain resource.

In a possible design, the multiple frequency domain resources include: X frequency domain resources with a bandwidth of the first bandwidth and Y frequency domain resources with a bandwidth of the second bandwidth, wherein each of the bandwidths is the second bandwidth. A frequency-domain resource with a bandwidth includes RBs divided by M divided by N and taken up to an integer multiple of L, and each frequency-domain resource whose bandwidth is a second bandwidth includes RBs divided by M divided by N taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, X is the remainder of dividing M by L and N, Y is the difference between N and X, L is an integer greater than or equal to 1, and N is the multiple The number of frequency domain resources.

In a possible design, the L is 1 or 4.

In a possible design, the reference signal is a sounding reference signal SRS.

When the communication device 2000 is used to implement the functions of the terminal device in the method embodiment shown in FIG. 17:

The processing unit 2010 is configured to determine a first frequency domain resource according to the reference signal configuration information, the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively second frequency domain resources. A part of domain resources, the second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource in sequence from low frequency to high frequency, and the second frequency domain resource is a section Continuous frequency domain resources;

The transceiver unit 2020 is further configured to send a reference signal on the first frequency domain resource.

In a possible design, the L is 1 or 4.

In a possible design, the reference signal is a sounding reference signal SRS.

When the communication device 2000 is used to realize the function of the network device in the method embodiment shown in FIG. 8:

The processing unit 2010 is configured to determine a first frequency domain resource according to reference signal configuration information sent to the terminal device, where the first frequency domain resource is one of multiple frequency domain resources, and the multiple frequency domain resources are respectively A part of the second frequency domain resource, and the bandwidths of at least two frequency domain resources among the plurality of frequency domain resources are not equal, and the second frequency domain resource is a continuous frequency domain resource;

The transceiver unit 2020 is configured to receive a reference signal on the first frequency domain resource.

In a possible design, the L is 1 or 4.

In a possible design, the reference signal is a sounding reference signal SRS.

When the communication device 2000 is used to realize the function of the network device in the method embodiment shown in FIG. 17:

The processing unit 2010 is configured to determine a first frequency domain resource according to reference signal configuration information sent to the terminal device, where the first frequency domain resource is one of multiple frequency domain resources, and the multiple frequency domain resources are respectively A part of the second frequency domain resource, the second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource sequentially from low frequency to high frequency, the second frequency domain The resource is a continuous frequency domain resource;

In a possible design, the L is 1 or 4.

In a possible design, the reference signal is a sounding reference signal SRS.

More detailed descriptions about the processing unit 2010 and the transceiver unit 2020 can be directly obtained by referring to the relevant descriptions in the method embodiment shown in FIG. 8 or FIG. 17 , and will not be repeated here.

As shown in FIG. 21 , a communication device 2100 includes a processor 2110 and an interface circuit 2120 . The processor 2110 and the interface circuit 2120 are coupled to each other. It can be understood that the interface circuit 2120 may be a transceiver or an input/output interface. Optionally, the communication device 2100 may further include a memory 2130 for storing instructions executed by the processor 2110 or storing input data required by the processor 2110 to execute the instructions or storing data generated after the processor 2110 executes the instructions.

When the communication device 2100 is used to implement the method shown in FIG. 8 or FIG. 17 , the processor 2110 is used to implement the functions of the above-mentioned processing unit 2010 , and the interface circuit 2120 is used to implement the functions of the above-mentioned transceiver unit 2020 .

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules in the terminal device (such as radio frequency modules or antennas), and the information is sent to the terminal device by the network device; or, the terminal device chip sends information to other modules in the terminal device (such as radio frequency modules or antenna) to send information, which is sent by the terminal device to the network device.

When the above communication device is a module applied to network equipment, the network equipment module implements the functions of the network equipment in the above method embodiments. The network equipment module receives information from other modules in the network equipment (such as radio frequency modules or antennas), and the information is sent to the network equipment by the terminal equipment; or, the network equipment module sends information to other modules in the network equipment (such as radio frequency modules or antenna) to send information, which is sent by the network device to the terminal device. The network device module here may be a baseband chip of the network device, or a DU or other modules, and the DU here may be a DU under an open radio access network (O-RAN) architecture.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor can be a microprocessor, or any conventional processor.

The method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only Memory, registers, hard disk, removable hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and storage medium can be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Certainly, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disk; and it may also be a semiconductor medium, such as a solid state disk. The computer readable storage medium may be a volatile or a nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In addition, it should be understood that in the embodiments of the present application, the word "exemplary" is used as an example, illustration or description. Any embodiment or design described herein as "example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present concepts in a concrete manner.

In addition, in this embodiment of the application, information, signal (signal), message (message), and channel (channel) can sometimes be used interchangeably. It should be noted that when the differences are not emphasized, the meanings they want to express are consistent of. "的(of)", "corresponding (corresponding, relevant)" and "corresponding (corresponding)" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meanings they intend to express are consistent.

In this application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the contextual objects are an "or" relationship; in the formulas of this application, the character "/" indicates that the contextual objects are a "division" Relationship. "Including at least one of A, B and C" may mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

It can be understood that the various numbers involved in the embodiments of the present application are only for convenience of description, and are not used to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of each process should be determined by its functions and internal logic.

Claims

A method for transmitting a reference signal, comprising:

receiving reference signal configuration information from a network device;

determining a first frequency domain resource according to the reference signal configuration information, where the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively a part of a second frequency domain resource, and Among the plurality of frequency domain resources, there are at least two frequency domain resources with unequal bandwidths, and the second frequency domain resource is a continuous frequency domain resource;

Send a reference signal on the first frequency domain resource.
The method according to claim 1, wherein the multiple frequency domain resources do not overlap with each other, and the sum of bandwidths is equal to the bandwidth of the second frequency domain resources.
The method according to claim 1 or 2, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The method according to any one of claims 1-3, wherein the bandwidth of any frequency domain resource among the plurality of frequency domain resources is the first bandwidth or the second bandwidth, and the first bandwidth and the The second bandwidths are not equal.
The method according to any one of claims 1-4, wherein the multiple frequency domain resources include:

X frequency domain resources whose bandwidth is the first bandwidth and Y frequency domain resources whose bandwidth is the second bandwidth, wherein each frequency domain resource whose bandwidth is the first bandwidth includes dividing M by N and taking up an integer multiple of L RB, each of the frequency domain resources whose bandwidth is the second bandwidth includes RBs divided by M divided by N and taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, and X is divided by M Taking L and dividing it by N, Y is the difference between N and X, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources.
The method according to claim 5, wherein said L is 1 or 4.
The method according to any one of claims 1-6, wherein the position of the plurality of frequency domain resources in the second frequency domain resource is position i, and from the position of the second frequency domain resource From low frequency to high frequency, i is 0, 1, ..., N-1 in sequence, and N is the number of the multiple frequency domain resources; where,

When i is an integer less than or equal to (N-1) divided by 2 and rounded down and greater than 0, the number of RBs included in the frequency domain resource corresponding to position i-1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i The number of RBs;

When i is an integer greater than (N-1) divided by 2 and less than N-1, the number of RBs included in the frequency domain resource corresponding to position i+1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i Number of RBs.
A method for transmitting a reference signal, comprising:

receiving reference signal configuration information from a network device;

Determine a first frequency domain resource according to the reference signal configuration information, where the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively a part of a second frequency domain resource, so The second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource in sequence from low frequency to high frequency, and the second frequency domain resource is a continuous frequency domain resource;

Send a reference signal on the first frequency domain resource.
The method according to claim 8, wherein the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource do not overlap with each other, and the sum of bandwidth is equal to the first idle frequency domain resource. The bandwidth of the second frequency domain resource.
The method according to claim 8 or 9, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The method according to any one of claims 8-10, wherein each frequency domain resource in the plurality of frequency domain resources includes resource blocks (RB) divided by M divided by N and taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources;

When O is divisible by 2, each of the first idle frequency domain resource and the second idle frequency domain resource includes RBs divided by 2, and the O is equal to the remainder of M divided by L and divided by N multiplied by Take the value of L; or,

When O is not divisible by 2, the first idle frequency domain resources include RBs divided by 2 rounded up, and the second idle frequency domain resources include RBs divided by 2 rounded down; or ,

When O is not divisible by 2, the first idle frequency domain resource includes RBs whose number is rounded down by 0 divided by 2, and the second idle frequency domain resource includes RBs whose number is rounded up by 0 divided by 2.
The method according to claim 11, wherein said L is 1 or 4.
The method according to any one of claims 8-10, wherein bandwidths of at least two frequency domain resources among the plurality of frequency domain resources are unequal.
A method for transmitting a reference signal, comprising:

Determine a first frequency domain resource according to reference signal configuration information sent to the terminal device, where the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively a second frequency domain resource a part, and among the plurality of frequency domain resources, there are at least two frequency domain resources with unequal bandwidths, and the second frequency domain resource is a continuous frequency domain resource;

Receive a reference signal on the first frequency domain resource.
The method according to claim 14, wherein the multiple frequency domain resources do not overlap with each other, and the sum of bandwidths is equal to the bandwidth of the second frequency domain resources.
The method according to claim 14 or 15, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The method according to any one of claims 14-16, wherein the bandwidth of any frequency domain resource among the plurality of frequency domain resources is the first bandwidth or the second bandwidth, and the first bandwidth and the The second bandwidths are not equal.
The method according to any one of claims 14-17, wherein the multiple frequency domain resources include:

X frequency domain resources whose bandwidth is the first bandwidth and Y frequency domain resources whose bandwidth is the second bandwidth, wherein each frequency domain resource whose bandwidth is the first bandwidth includes dividing M by N and taking up an integer multiple of L RB, each of the frequency domain resources whose bandwidth is the second bandwidth includes RBs divided by M divided by N and taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, and X is divided by M Taking L and dividing it by N, Y is the difference between N and X, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources.
The method of claim 18, wherein said L is 1 or 4.
The method according to any one of claims 14-19, wherein the position of the plurality of frequency domain resources in the second frequency domain resource is position i, and the From low frequency to high frequency, i is 0, 1, ..., N-1 in sequence, and N is the number of the multiple frequency domain resources; where,

When i is an integer less than or equal to (N-1) divided by 2 and rounded down and greater than 0, the number of RBs included in the frequency domain resource corresponding to position i-1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i The number of RBs;

When i is an integer greater than (N-1) divided by 2 and less than N-1, the number of RBs included in the frequency domain resource corresponding to position i+1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i Number of RBs.
A method for transmitting a reference signal, comprising:

Determine a first frequency domain resource according to reference signal configuration information sent to the terminal device, where the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively a second frequency domain resource In one part, the second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource in order from low frequency to high frequency, and the second frequency domain resource is a continuous frequency domain resource domain resources;

Receive a reference signal on the first frequency domain resource.
The method according to claim 21, wherein the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource do not overlap with each other, and the sum of bandwidth is equal to the first idle frequency domain resource. The bandwidth of the second frequency domain resource.
The method according to claim 21 or 22, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The method according to any one of claims 21-23, wherein each frequency domain resource in the plurality of frequency domain resources includes resource blocks (RB) divided by M divided by N and taken down to an integer multiple of L, M is the number of RBs included in the second frequency domain resource, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources;

When O is divisible by 2, each of the first idle frequency domain resource and the second idle frequency domain resource includes RBs divided by 2, and the O is equal to the remainder of M divided by L and divided by N multiplied by Take the value of L; or,

When O is not divisible by 2, the first idle frequency domain resources include RBs divided by 2 rounded up, and the second idle frequency domain resources include RBs divided by 2 rounded down; or ,

When O is not divisible by 2, the first idle frequency domain resource includes RBs whose number is rounded down by 0 divided by 2, and the second idle frequency domain resource includes RBs whose number is rounded up by 0 divided by 2.
The method of claim 24, wherein said L is 1 or 4.
The method according to any one of claims 21-23, wherein bandwidths of at least two frequency domain resources among the plurality of frequency domain resources are unequal.
A reference signal transmission device, characterized in that it includes a transceiver unit and a processing unit;

The transceiver unit is configured to receive reference signal configuration information from network equipment;

The processing unit is configured to determine a first frequency domain resource according to the reference signal configuration information, the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively the second A part of frequency domain resources, and among the plurality of frequency domain resources, the bandwidths of at least two frequency domain resources are not equal, and the second frequency domain resource is a continuous frequency domain resource;

The transceiving unit is further configured to send a reference signal on the first frequency domain resource.
The device according to claim 27, wherein the multiple frequency domain resources do not overlap with each other, and the sum of bandwidths is equal to the bandwidth of the second frequency domain resources.
The device according to claim 27 or 28, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The device according to any one of claims 27-29, wherein the bandwidth of any frequency domain resource among the plurality of frequency domain resources is the first bandwidth or the second bandwidth, and the first bandwidth and the The second bandwidths are not equal.
The device according to any one of claims 27-30, wherein the multiple frequency domain resources include: X frequency domain resources with the first bandwidth and Y frequency domain resources with the second bandwidth. Domain resources, wherein each frequency domain resource whose bandwidth is the first bandwidth includes RBs divided by M divided by N and taken up to an integer multiple of L, and each frequency domain resource whose bandwidth is the second bandwidth includes M divided by N Take down the number of RBs that are integer multiples of L, M is the number of RBs included in the second frequency domain resource, X is the remainder of dividing M by L and dividing by N, Y is the difference between N and X, and L is greater than or an integer equal to 1, and N is the number of the multiple frequency domain resources.
The apparatus of claim 31, wherein said L is 1 or 4.
The device according to any one of claims 27-32, wherein the position of the plurality of frequency domain resources in the second frequency domain resource is position i, and from the position of the second frequency domain resource From low frequency to high frequency, i is 0, 1, ..., N-1 in sequence, and N is the number of the multiple frequency domain resources; wherein, when i is less than or equal to (N-1) divided by 2, it is rounded down , and an integer greater than 0, the number of RBs included in the frequency domain resource corresponding to position i-1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i; when i is greater than (N-1) divided by 2 down When it is rounded to an integer less than N-1, the number of RBs included in the frequency domain resource corresponding to position i+1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i.
A reference signal transmission device, characterized in that it includes a transceiver unit and a processing unit;

The transceiver unit is configured to receive reference signal configuration information from network equipment;

The processing unit is configured to determine a first frequency domain resource according to the reference signal configuration information, the first frequency domain resource is one of a plurality of frequency domain resources, and the plurality of frequency domain resources are respectively the second A part of the frequency domain resource, the second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource sequentially from low frequency to high frequency, and the second frequency domain resource is A continuous frequency domain resource;

The transceiving unit is further configured to send a reference signal on the first frequency domain resource.
The device according to claim 34, wherein the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource do not overlap with each other, and the sum of the bandwidths is equal to the first idle frequency domain resource. The bandwidth of the second frequency domain resource.
The device according to claim 34 or 35, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The device according to any one of claims 34-36, wherein each frequency domain resource in the plurality of frequency domain resources includes resource blocks RB that are integer multiples of L divided by N, M is the number of RBs included in the second frequency domain resource, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources;

When O is divisible by 2, each of the first idle frequency domain resource and the second idle frequency domain resource includes RBs divided by 2, and the O is equal to the remainder of M divided by L and divided by N multiplied by Take the value of L; or,

When O is not divisible by 2, the first idle frequency domain resources include RBs divided by 2 rounded up, and the second idle frequency domain resources include RBs divided by 2 rounded down; or ,

When O is not divisible by 2, the first idle frequency domain resource includes RBs whose number is rounded down by 0 divided by 2, and the second idle frequency domain resource includes RBs whose number is rounded up by 0 divided by 2.
The apparatus of claim 37, wherein said L is 1 or 4.
The apparatus according to any one of claims 34-36, wherein bandwidths of at least two frequency domain resources among the plurality of frequency domain resources are unequal.
A reference signal transmission device, characterized in that it includes a transceiver unit and a processing unit;

The processing unit is configured to determine a first frequency domain resource according to reference signal configuration information sent to the terminal device, where the first frequency domain resource is one of multiple frequency domain resources, and the multiple frequency domain resources are respectively It is a part of the second frequency domain resource, and the bandwidths of at least two frequency domain resources among the plurality of frequency domain resources are not equal, and the second frequency domain resource is a continuous frequency domain resource;

The transceiving unit is configured to receive a reference signal on the first frequency domain resource.
The device according to claim 40, wherein the multiple frequency domain resources do not overlap with each other, and the sum of bandwidths is equal to the bandwidth of the second frequency domain resources.
The device according to claim 40 or 41, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The device according to any one of claims 40-42, wherein the bandwidth of any frequency domain resource among the plurality of frequency domain resources is the first bandwidth or the second bandwidth, and the first bandwidth and the The second bandwidths are not equal.
The device according to any one of claims 40-43, wherein the multiple frequency domain resources include: X frequency domain resources with the first bandwidth and Y frequency domain resources with the second bandwidth. Domain resources, wherein each frequency domain resource whose bandwidth is the first bandwidth includes RBs divided by M divided by N and taken up to an integer multiple of L, and each frequency domain resource whose bandwidth is the second bandwidth includes M divided by N Take down the number of RBs that are integer multiples of L, M is the number of RBs included in the second frequency domain resource, X is the remainder of dividing M by L and dividing by N, Y is the difference between N and X, and L is greater than or an integer equal to 1, and N is the number of the multiple frequency domain resources.
The apparatus of claim 44, wherein said L is 1 or 4.
The device according to any one of claims 40-45, wherein the position of the plurality of frequency domain resources in the second frequency domain resource is position i, and from the position of the second frequency domain resource From low frequency to high frequency, i is 0, 1, ..., N-1 in sequence, and N is the number of the multiple frequency domain resources; wherein, when i is less than or equal to (N-1) divided by 2, it is rounded down , and an integer greater than 0, the number of RBs included in the frequency domain resource corresponding to position i-1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i; when i is greater than (N-1) divided by 2 down When it is rounded to an integer less than N-1, the number of RBs included in the frequency domain resource corresponding to position i+1 is greater than or equal to the number of RBs included in the frequency domain resource corresponding to position i.
A reference signal transmission device, characterized in that it includes a transceiver unit and a processing unit;

The processing unit is configured to determine a first frequency domain resource according to reference signal configuration information sent to the terminal device, where the first frequency domain resource is one of multiple frequency domain resources, and the multiple frequency domain resources are respectively It is a part of the second frequency domain resource, and the second frequency domain resource includes the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource in order from low frequency to high frequency, and the second frequency domain resource The domain resource is a continuous frequency domain resource;

The transceiving unit is configured to receive a reference signal on the first frequency domain resource.
The device according to claim 47, wherein the first idle frequency domain resource, the plurality of frequency domain resources and the second idle frequency domain resource do not overlap with each other, and the sum of the bandwidths is equal to the first idle frequency domain resource. The bandwidth of the second frequency domain resource.
The device according to claim 47 or 48, wherein the reference signal configuration information includes a partial bandwidth factor PF and a partial bandwidth frequency domain location factor K F , the PF indicates the location of the multiple frequency domain resources quantity, the K F indicates the position of the first frequency domain resource among the multiple frequency domain resources.
The device according to any one of claims 47-49, wherein each frequency domain resource in the plurality of frequency domain resources includes resource blocks RB that are integer multiples of L divided by N, M is the number of RBs included in the second frequency domain resource, L is an integer greater than or equal to 1, and N is the number of the multiple frequency domain resources;

When O is divisible by 2, each of the first idle frequency domain resource and the second idle frequency domain resource includes RBs divided by 2, and the O is equal to the remainder of M divided by L and divided by N multiplied by Take the value of L; or,

When O is not divisible by 2, the first idle frequency domain resources include RBs divided by 2 rounded up, and the second idle frequency domain resources include RBs divided by 2 rounded down; or ,

When O is not divisible by 2, the first idle frequency domain resource includes RBs whose number is rounded down by 0 divided by 2, and the second idle frequency domain resource includes RBs whose number is rounded up by 0 divided by 2.
The apparatus of claim 50, wherein said L is 1 or 4.
The apparatus according to any one of claims 47-49, wherein bandwidths of at least two frequency domain resources among the plurality of frequency domain resources are unequal.
A communications device, characterized by comprising a processor configured to execute the method according to any one of claims 1-7 or 8-13.
A communications device, characterized by comprising a processor configured to execute the method according to any one of claims 14-20 or 21-26.
A communication device, characterized by comprising a processor, the processor is configured to execute instructions stored in a memory, so that the method according to any one of claims 1-7 or 8-13 is implemented.
A communications device, characterized by comprising a processor configured to execute instructions stored in a memory, so that the method according to any one of claims 14-20 or 21-26 is implemented.
A computer program product, characterized by comprising program code, when the program code is executed, the method according to any one of claims 1-7 or 8-13 is realized.
A computer program product, characterized by comprising program code, when the program code is executed, the method according to any one of claims 14-20 or 21-26 is realized.
A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, any of claims 1-7 or 8-13 can be realized. one of the methods described.
A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, any one of claims 14-20 or 21-26 can be realized. one of the methods described.