Reference signal transmitting method, reference signal receiving method, and apparatus

Abstract

Provided in the present application are a reference signal transmitting method, a reference signal receiving method and an apparatus. In the transmitting method, before resource mapping, a transmitting device can associate reference signal sequences with ports, so as to obtain the reference signal sequences of the multiple ports, and the reference signal sequences of the multiple ports are subjected to resource mapping, such that reference signals of the multiple different ports are obtained. While occupying the same time-frequency resource, the reference signals of the multiple different ports occupy resources in the delay domain and / or in the Doppler domain that are not completely the same. The reference signals of the multiple different ports can be used for fulfilling different service requirements, not only increasing the resource utilization rate, but also reducing interference between different services.

Description

Method and device for sending and receiving reference signal

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 7, 2024, with application number 202410276438.6 and application name “Method and device for sending and receiving reference signals”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to a method and apparatus for sending and receiving a reference signal. Background Art

[0003] With the continuous increase in wireless communication application scenarios, wireless signals can have multiple capabilities at the same time. Wireless signals with different capabilities (hereinafter referred to as signals) can meet different business needs, such as environmental perception or channel estimation.

[0004] In response to different business needs, a solution has been proposed. The sending device can allocate different time-frequency resources to signals with different capabilities. Each signal occupies different time-frequency resources, which can meet the orthogonality between signals and prevent interference between signals.

[0005] However, this solution results in low resource utilization and cannot meet the increasingly diverse business needs. Summary of the Invention

[0006] The present application provides a method and apparatus for sending and receiving a reference signal, in order to improve resource utilization.

[0007] In a first aspect, a method for transmitting a reference signal is provided. The method for transmitting a reference signal can be applied to an apparatus for transmitting a reference signal. The apparatus can be, for example, a transmitting device (e.g., a network device or a terminal device), a component configured in the transmitting device (e.g., a chip, a chip system, a processor, etc.), or a logic module or software capable of implementing all or part of the functions of the transmitting device. This application is not limited to this.

[0008] Exemplarily, the method includes: generating a reference signal sequence for K ports, the reference signal sequence for the K ports being used for communication and / or perception, and K being a positive integer greater than 1; mapping the reference signal sequence for the K ports to resources to obtain reference signals for the K ports; the reference signals for the K ports occupy the same time-frequency resources, and the resources occupied in at least one domain in the delay domain or the Doppler domain are not exactly the same; and sending the reference signals for the K ports.

[0009] Based on the above solution, reference signal sequences are associated with ports before resource mapping to obtain reference signal sequences for multiple ports. Resource mapping then maps the reference signal sequences for different ports to the same time-frequency resources to obtain reference signals for multiple ports. These reference signals for the multiple ports occupy different resources in the delay domain and / or Doppler domain. These reference signals for different ports can be used to meet different service requirements, thereby improving resource utilization and reducing interference between different services.

[0010] In combination with the first aspect, in some possible implementations of the first aspect, the reference signals of the K ports are mapped to different resources in the delay domain, and the phases of the reference signals of the K ports in the frequency domain are different.

[0011] The transmitting device performs a frequency-domain phase shift on the reference signal sequence to obtain reference signal sequences for multiple different ports (e.g., K ports). Through resource mapping, the reference signal sequences for the different ports occupy the same time-frequency domain resources, and the reference signals for the different ports occupy different delay domain resources. This improves resource utilization.

[0012] In combination with the first aspect, in certain possible implementations of the first aspect, the phase offset in the frequency domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and the k1 and the k2 are respectively integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0013] There is a phase offset in the frequency domain between the reference signals of any two ports in the K ports' reference signals, and the phase offset is related to the difference in the port numbers of the two ports. The transmitting device can determine the reference signals of the other ports in the K ports' reference signals based on the phase offset in the frequency domain between the reference signal of any one port in the K ports' reference signals and the reference signals of the other ports in the K ports' reference signals relative to the reference signal of the port. In this way, the reference signals of multiple ports can be carried on the same time-frequency resources, improving resource utilization.

[0014] With reference to the first aspect, in some possible implementations of the first aspect, the reference signal of the k1th port and the reference signal of the k2th port satisfy the following conditions:

[0015] Among them, the Represents the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and A is a preconfigured value.

[0016] The transmitting device can determine the reference signals of other ports based on the reference signal of any one of the K ports and the frequency domain phase offsets of the reference signals of other ports, other than the reference signal of the K ports, relative to the reference signal of the port. In this way, the reference signals of multiple ports can be carried on the same time-frequency resources, improving resource utilization.

[0017] In conjunction with the first aspect, in some possible implementations of the first aspect, A satisfies: A=M seq ; satisfy: The X represents the number of resource units RE occupied by the reference signals of the K ports in the frequency domain in a resource block RB, and the M seq represents the total number of REs occupied by the reference signals of the K ports in the frequency domain, the X and the M seq All are positive integers.

[0018] The value of A is different, the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain is different. The minimum value is X, so that the reference signal of the k1th port and the reference signal of the k2th port do not overlap in the delay domain resources, thereby reducing the interference between the ports to a greater extent; The maximum value is When the K ports are connected, the reference signals of the K ports can all be mapped to the frequency domain resources, and do not completely overlap in the delay domain. The reference signals of the K ports can be dispersed as much as possible in the delay domain, which can reduce the interference between the ports to a greater extent.

[0019] In conjunction with the first aspect, in some possible implementations of the first aspect, the satisfy:

[0020] When the phase offset in the frequency domain reaches its maximum value, the reference signals of the K ports can be dispersed as much as possible in the delay domain, thereby reducing interference between the ports to a greater extent.

[0021] In conjunction with the first aspect, in some possible implementations of the first aspect, A satisfies: A=K; satisfy:

[0022] When A takes K, the phase offset in the frequency domain is taken to the maximum value, so that K max The reference signals of each port are dispersed as much as possible in the delay domain, thereby reducing the interference between the ports to a greater extent.

[0023] In combination with the first aspect, in some possible implementations of the first aspect, the method further includes: sending first information, where the first information is used to indicate the phase offset in the frequency domain of the reference signals of other ports except the reference port among the reference signals of the K ports relative to the reference signal of the reference port, where the reference port is any one of the K ports.

[0024] The transmitting device may use the reference signal of any one of the K ports' reference signals as the reference signal of the reference port of the reference port, obtain a frequency domain phase offset of the reference signals of the other ports in the K ports' reference signals relative to the reference signal of the reference port, and transmit the phase offset along with the first information. In this way, a device receiving the first information may determine the reference signals of the other ports based on the first information and the reference signal of the reference port, thereby improving resource utilization.

[0025] With reference to the first aspect, in some possible implementations of the first aspect, the reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

[0026] By performing a time-domain phase shift on a reference signal sequence of a transmitting device, reference signal sequences for multiple different ports (e.g., K ports) can be obtained. Through resource mapping, the reference signal sequences for the different ports occupy the same time-frequency domain resources, and the reference signals for the different ports occupy different Doppler domain resources. This improves resource utilization.

[0027] In combination with the first aspect, in certain possible implementations of the first aspect, the phase offset in the time domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and the k1 and the k2 are respectively integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0028] There is a phase offset in the time domain between the reference signals of any two ports in the reference signals of the K ports, and the phase offset is related to the difference in the port numbers of the two ports. The transmitting device can determine the reference signals of other ports in the reference signals of the K ports based on the phase offset in the time domain between the reference signal of any one port in the reference signals of the K ports and the reference signals of other ports in the reference signals of the K ports relative to the reference signal of the port. In this way, the reference signals of multiple ports can be carried on the same time-frequency resources, thereby improving resource utilization.

[0029] With reference to the first aspect, in some possible implementations of the first aspect, the reference signal of the k1th port and the reference signal of the k2th port satisfy the following conditions:

[0030] Among them, the represents the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and B is a preconfigured value.

[0031] The transmitting device can determine the reference signals of other ports based on the reference signal of any one of the K ports and the time domain phase offsets of the reference signals of other ports relative to the reference signal of the K ports. In this way, the reference signals of multiple ports can be carried on the same time-frequency resources, improving resource utilization.

[0032] In conjunction with the first aspect, in some possible implementations of the first aspect, B satisfies: B=N seq ; satisfy: The Y represents the number of symbols occupied by the reference signals of the K ports in one RB, and the N seq represents the total number of symbols occupied by the reference signals of the K ports, the Y and the N seq All are positive integers.

[0033] The value of B is different, and the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain is different. The minimum value is Y, so that the reference signal of the k1th port and the reference signal of the k2th port do not overlap in the Doppler domain, thereby reducing the interference between the ports to a greater extent; The maximum value is When the K ports are mapped to the time domain resources, the reference signals of the K ports can all be mapped to the time domain resources, and do not completely overlap in the Doppler domain. The reference signals of the K ports can be dispersed as much as possible in the Doppler domain, and the interference between the ports can be reduced to a greater extent.

[0034] In conjunction with the first aspect, in some possible implementations of the first aspect, the satisfy:

[0035] When the phase offset in the time domain reaches its maximum value, the reference signals of the K ports can be dispersed as much as possible in the Doppler domain, thereby reducing the interference between the ports to a greater extent.

[0036] In conjunction with the first aspect, in some possible implementations of the first aspect, B=K; satisfy:

[0037] When B is K, the phase offset in the time domain is taken to the maximum value, so that K max The reference signals of each port are dispersed as much as possible in the Doppler domain, thereby reducing the interference between the ports to a greater extent.

[0038] In combination with the first aspect, in some possible implementations of the first aspect, the method further includes: sending second information, where the second information is used to indicate the phase offset in the time domain of other ports other than the reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one of the K ports.

[0039] The transmitting device can use the reference signal of any one of the K ports' reference signals as the reference signal of the reference port of the reference port, obtain the time domain phase offset of the reference signals of the other K-1 ports in the K ports' reference signals relative to the reference signal of the reference port, and transmit the phase offset along with the second information. In this way, the device receiving the second information can determine the reference signals of the other ports based on the second information and the reference signal of the reference port, thereby improving resource utilization.

[0040] In combination with the first aspect, in some possible implementations of the first aspect, the reference signal sequence is: a demodulation reference signal sequence, a channel state information reference signal sequence, a positioning reference signal sequence, or a sounding reference signal sequence.

[0041] Transmitters can meet different service requirements based on the aforementioned reference signal sequences. Furthermore, by mapping different reference signal sequences to resources, the transmitting device can carry reference signals for multiple ports on the same time-frequency resources, allowing them to occupy the same time-frequency resources but different delay-Doppler domain resources. This not only improves resource utilization but also reduces interference between different services.

[0042] In combination with the first aspect, in certain possible implementations of the first aspect, the reference signal of each port of the K ports occupies a continuous time domain resource, and the time domain resource carries a repeatedly transmitted reference signal sequence, and the reference signal sequence transmitted each time is continuous in the time domain resource, and the reference signal sequences transmitted twice adjacently are continuous in the time domain resource.

[0043] The transmitting device can repeatedly transmit the reference signal sequence corresponding to the reference signal of each of the K ports over a continuous period of time domain resources. Phase shifting is performed on these repeatedly transmitted reference signal sequences in the time domain to ensure continuity between two consecutive transmitted reference signal sequences. This allows for full utilization of time domain resources and improves resource efficiency.

[0044] In combination with the first aspect, in some possible implementations of the first aspect, the phase of the reference signal of the kth port among the K ports in the time domain resource is a phase difference of the reference signal sequence transmitted for the nth time and the phase of the reference signal sequence transmitted for the (n-1)th time. The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of points in the fast Fourier transform (FFT).

[0045] The transmitting device can determine the time-domain phase offset for each transmitted reference signal sequence based on the phase of the previously transmitted reference signal sequence, the length of the cyclic prefix, and the number of points used in the FFT transform, thereby ensuring that the reference signal sequences transmitted between two consecutive times are continuous. This allows for full utilization of time-domain resources and improves resource efficiency.

[0046] In a second aspect, a method for receiving a reference signal is provided. The method for receiving a reference signal can be applied to an apparatus for receiving a reference signal. The apparatus can be, for example, a receiving device (e.g., a network device or a terminal device), a component configured in the receiving device (e.g., a chip, a chip system, a processor, etc.), or a logic module or software capable of implementing all or part of the functions of the receiving device. This application is not limited to this.

[0047] Exemplarily, the method includes: receiving reference signals of K ports, where K is a positive integer greater than 1; the reference signals of the K ports occupy the same time-frequency resources; converting the reference signals of the K ports from the time-frequency domain to the delay-Doppler domain, and the resources occupied by the reference signals of the K ports in at least one of the delay domain or the Doppler domain are not completely the same; extracting the reference signal sequence of the K ports from the delay-Doppler domain, and the reference signal sequence of the K ports is used for communication and / or perception.

[0048] Based on the above solution, reference signal sequences are associated with ports before resource mapping to obtain reference signal sequences for multiple ports. Resource mapping then maps the reference signal sequences for different ports to the same time-frequency resources, but with different delay and / or Doppler domains. These reference signals from different ports can be used for various services, such as communication and / or sensing. This not only improves spectrum utilization but also reduces interference between different services.

[0049] In combination with the second aspect, in some possible implementations of the second aspect, the reference signals of the K ports are mapped to different resources in the delay domain, and the phases of the reference signals of the K ports in the frequency domain are different.

[0050] In combination with the second aspect, in certain possible implementations of the second aspect, the phase offset in the frequency domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and the k1 and the k2 are respectively integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0051] In conjunction with the second aspect, in some possible implementations of the second aspect, the reference signal of the k1th port and the reference signal of the k2th port satisfy the following conditions:

[0052] Among them, the Represents the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and A is a preconfigured value.

[0053] In conjunction with the second aspect, in some possible implementations of the second aspect, A satisfies: A=M seq ; satisfy: The X represents the number of resource units RE occupied by the reference signals of the K ports in the frequency domain in a resource block RB, and the M seqrepresents the total number of REs occupied by the reference signals of the K ports in the frequency domain, the X and the M seq All are positive integers.

[0054] In conjunction with the second aspect, in some possible implementations of the second aspect, the satisfy:

[0055] In conjunction with the second aspect, in some possible implementations of the second aspect, the A satisfies: A=K; satisfy:

[0056] In combination with the second aspect, in some possible implementations of the second aspect, the method further includes: receiving first information, where the first information is used to indicate the phase offset in the frequency domain of other ports other than the reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one of the K ports.

[0057] The receiving device may determine, based on the received first information and the reference signal of the reference port, reference signals of other ports except the reference port among the reference signals of the K ports.

[0058] In combination with the second aspect, in some possible implementations of the second aspect, the reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

[0059] In combination with the second aspect, in certain possible implementations of the second aspect, the phase offset in the time domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and the k1 and the k2 are respectively integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0060] In conjunction with the second aspect, in some possible implementations of the second aspect, the reference signal of the k1th port and the reference signal of the k2th port satisfy the following conditions:

[0061] Among them, the represents the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and B is a preconfigured value.

[0062] In conjunction with the second aspect, in some possible implementations of the second aspect, B satisfies: B=N seq ; satisfy: The Y represents the number of symbols occupied by the reference signals of the K ports in one RB, and the N seq represents the total number of symbols occupied by the reference signals of the K ports, the Y and the N seq All are positive integers.

[0063] In conjunction with the second aspect, in some possible implementations of the second aspect, the satisfy:

[0064] In conjunction with the second aspect, in some possible implementations of the second aspect, B=K; satisfy:

[0065] In combination with the second aspect, in some possible implementations of the second aspect, the method further includes: receiving second information, where the second information is used to indicate the phase offset in the time domain of other ports other than the reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one of the K ports.

[0066] The receiving device may determine reference signals of other ports except the reference port among the reference signals of the K ports based on the received second information and the reference signal of the reference port.

[0067] In combination with the second aspect, in some possible implementations of the second aspect, the reference signal sequence is: a demodulation reference signal (DMRS) sequence, a channel state information reference signal (CSI-RS) sequence, a positioning reference signal (PRS) sequence, or a sounding reference signal (SRS) sequence.

[0068] In combination with the second aspect, in certain possible implementations of the second aspect, the reference signal of each port of the K ports occupies a continuous time domain resource, and the time domain resource carries a repeatedly transmitted reference signal sequence. The reference signal sequence transmitted each time is continuous in the time domain resource, and the reference signal sequences transmitted twice adjacently are continuous in the time domain resource segment.

[0069] The receiving device can repeatedly receive the reference signal sequence corresponding to the reference signal of each of the K ports over a continuous period of time domain resources. By performing phase shifts on these repeatedly transmitted reference signal sequences in the time domain, the two consecutive transmitted reference signal sequences are made continuous. This allows for full utilization of time domain resources and improves resource efficiency.

[0070] In combination with the second aspect, in some possible implementations of the second aspect, the phase of the reference signal of the kth port among the K ports in the time domain resource is a phase difference of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time. The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of FFT points.

[0071] The receiving device can determine the time-domain phase offset for each received reference signal sequence based on the phase of the previously transmitted reference signal sequence, the length of the cyclic prefix, and the number of points used in the FFT transform, thereby ensuring that the reference signal sequences transmitted between two consecutive times are continuous. This allows for full utilization of time-domain resources and improves resource efficiency.

[0072] For details on possible implementation methods of the second aspect, please refer to the relevant description in the first aspect and will not be repeated here.

[0073] In a third aspect, a method for transmitting a reference signal sequence is provided. The method for transmitting a reference signal sequence can be applied to an apparatus for transmitting a reference signal sequence. The apparatus can be, for example, a transmitting device (e.g., a network device or a terminal device), a component configured in the transmitting device (e.g., a chip, a chip system, a processor, etc.), or a logic module or software capable of implementing all or part of the functions of the transmitting device. This application is not limited to this.

[0074] Exemplarily, the method includes: generating a reference signal sequence, wherein the reference signal sequence is used for sensing and / or communication; repeatedly sending the reference signal sequence on a continuous time domain resource, wherein in the time domain resource, the reference signal sequence sent each time is continuous in the time domain resource, and the reference signal sequences sent two adjacent times are continuous in the time domain resource.

[0075] Based on the above solution, the transmitting device can repeatedly transmit the reference signal sequence multiple times over a continuous time domain resource. Phase shifting is performed on the repeated reference signal sequences in the time domain to ensure continuity between two consecutive reference signal sequences. This allows for full utilization of time domain resources and improves resource efficiency.

[0076] In conjunction with the third aspect, in some possible implementations of the third aspect, in the time domain resource, the phase of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time are different by a factor of The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of FFT points.

[0077] The transmitting device performs a phase shift on each repeated reference signal sequence in the time domain. The phase shift amount for each shift is determined based on the time domain phase of the previously transmitted reference signal sequence, the length of the cyclic prefix, and the number of fast Fourier transform points. This ensures that the reference signal sequences transmitted twice are continuous in time-frequency resources. This fully utilizes time domain resources and improves resource efficiency.

[0078] In a fourth aspect, a method for receiving a reference signal sequence is provided. The method for receiving a reference signal sequence can be applied to an apparatus for receiving a reference signal sequence. The apparatus can be, for example, a receiving device (e.g., a network device or a terminal device), a component configured in the receiving device (e.g., a chip, a chip system, a processor, etc.), or a logic module or software capable of implementing all or part of the functions of the receiving device. This application is not limited to this.

[0079] Exemplarily, the method includes: receiving a repeatedly transmitted reference signal sequence on a continuous time domain resource, wherein in the time domain resource, the reference signal sequence transmitted each time is continuous in the time domain resource, and the reference signal sequences transmitted two adjacent times are continuous in the time domain resource; and obtaining the reference signal sequence based on the received repeatedly transmitted reference signal sequence.

[0080] Based on the above solution, the receiving device can receive the repeatedly transmitted reference signal sequence on a continuous time domain resource. The two adjacent transmitted reference signal sequences are continuous, so that the time domain resources can be fully utilized and resource utilization can be improved.

[0081] In conjunction with the fourth aspect, in some possible implementations of the fourth aspect, in the time domain resource, the phase of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time are different by a factor of The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of FFT points.

[0082] For details on possible implementation methods of the fourth aspect, please refer to the relevant description in the third aspect and will not be repeated here.

[0083] In a fifth aspect, the present application provides an apparatus comprising modules or units for implementing the method of the first or third aspect and any possible implementation of the first or third aspect. The modules, units, or means may be implemented in software, hardware, or a combination of software and hardware.

[0084] In the sixth aspect, the present application provides a device comprising one or more processors, which are used to execute a computer program (also referred to as code, or instructions) in a memory, so that the device implements the method described in the first to third aspects and any possible implementation of the first to third aspects.

[0085] Optionally, the device further comprises a memory for storing computer programs and data. The memory is coupled to the processor, and when the processor executes the computer program stored in the memory, the method described in the first or third aspect can be implemented.

[0086] Optionally, the apparatus further includes a communication interface, which is used for the apparatus to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other types of communication interfaces.

[0087] Illustratively, the apparatus in the fifth aspect or the sixth aspect is a sending device, or a component in the sending device, such as a chip, a chip system, a processor, etc.

[0088] In the seventh aspect, the present application provides a chip system comprising at least one processor for supporting the implementation of the functions involved in the above-mentioned first or third aspect and any possible implementation of the first or third aspect, for example, sending or processing the information involved in the above-mentioned method.

[0089] In one possible design, the chip system further includes a memory, which is used to store computer programs and data, and the memory is located inside or outside the processor.

[0090] The chip system can be composed of chips, or can include chips and other discrete devices.

[0091] In one possible design, the chip system further includes a power supply circuit, which is used to supply power to the chip system.

[0092] In an eighth aspect, the present application provides an apparatus comprising modules or units for implementing the method of the second or fourth aspect and any possible implementation of the second or fourth aspect. The modules, units, or means may be implemented in software, hardware, or a combination of software and hardware.

[0093] In the ninth aspect, the present application provides a device comprising one or more processors, which are used to execute a computer program (also referred to as code, or instructions) in a memory, so that the device implements the method described in the second or fourth aspect and any possible implementation of the second or fourth aspect.

[0094] Optionally, the apparatus further comprises a memory for storing computer programs and data. The memory is coupled to the processor, and when the processor executes the computer program stored in the memory, the method described in the second or fourth aspect can be implemented.

[0095] Optionally, the apparatus further includes a communication interface, which is used for the apparatus to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other types of communication interfaces.

[0096] Illustratively, the apparatus in the eighth aspect or the ninth aspect is a receiving device, or a component in the receiving device, such as a chip, a chip system, a processor, etc.

[0097] In the tenth aspect, the present application provides a chip system comprising at least one processor for supporting the implementation of the functions involved in the above-mentioned second or fourth aspect and any possible implementation of the second or fourth aspect, for example, receiving or processing the information involved in the above-mentioned method.

[0098] In one possible design, the chip system further includes a memory, which is used to store computer programs and data, and the memory is located inside or outside the processor.

[0099] The chip system can be composed of chips, or can include chips and other discrete devices.

[0100] In one possible design, the chip system further includes a power supply circuit, which is used to supply power to the chip system.

[0101] In an eleventh aspect, the present application provides a computer-readable storage medium comprising a computer program, which, when executed on a computer, enables the computer to implement the method in the first to fourth aspects and any possible implementation of the first to fourth aspects.

[0102] In the twelfth aspect, the present application provides a computer program product, comprising: a computer program, which, when run, enables a computer to execute the method in the first to fourth aspects and any possible implementation of the first to fourth aspects.

[0103] In the thirteenth aspect, an embodiment of the present application provides a communication system, including the aforementioned sending device and receiving device.

[0104] The fifth to thirteenth aspects of this application correspond to the technical solutions of the first to fourth aspects of this application. The beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0105] Figures 1 to 4 are schematic diagrams of the architecture of a communication system provided by an embodiment of the present application;

[0106] FIG5 shows three different schemes for mapping communication signals and perception signals onto time-frequency resources provided by an embodiment of the present application;

[0107] FIG6 is a schematic flowchart of a method for sending a reference signal according to an embodiment of the present application;

[0108] FIG7 is a schematic diagram of a reference signal sequence provided in an embodiment of the present application being mapped onto time-frequency resources;

[0109] FIG8 is a schematic diagram of converting a reference signal sequence from the time-frequency domain to the delay-Doppler domain provided by an embodiment of the present application;

[0110] 9 to 11 are further schematic diagrams of converting a reference signal sequence from the time-frequency domain to the delay-Doppler domain according to an embodiment of the present application;

[0111] FIG12 is a schematic flowchart of a method for receiving a reference signal provided in an embodiment of the present application;

[0112] FIG13 is a schematic flowchart of a method for sending a reference signal sequence according to an embodiment of the present application;

[0113] FIG14 is a schematic diagram of repeatedly sending a reference signal sequence over a continuous time domain resource according to an embodiment of the present application;

[0114] FIG15 is another schematic diagram of repeatedly sending a reference signal sequence over a continuous time domain resource according to an embodiment of the present application;

[0115] FIG16 is a schematic flowchart of a method for receiving a reference signal sequence provided in an embodiment of the present application;

[0116] FIG17 is a schematic diagram of the distribution of a DMRS sequence on an RB provided in an embodiment of the present application;

[0117] Figures 18 and 19 are schematic diagrams of the device provided in the embodiments of the present application;

[0118] FIG20 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0119] Figure 21 is a structural diagram of the network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0120] To facilitate understanding of the embodiments of the present application, the following points are first explained:

[0121] First, to facilitate a clear description of the technical solutions of the embodiments of this application, in the embodiments of this application, terms such as "first" and "second" are used to distinguish between identical or similar items with substantially identical functions and effects. For example, the first information and the second information are used solely to distinguish between phase offsets based on the time domain and the frequency domain, and do not limit their order or the number of signaling messages. Those skilled in the art will understand that terms such as "first" and "second" do not limit the number or execution order, and that terms such as "first" and "second" do not necessarily indicate differences.

[0122] Second, the "sending" and "receiving" in the embodiments of the present application indicate the direction of signal transmission. Communication between different devices may refer to direct communication between different devices (i.e., without the need for other devices to transfer or forward), or may refer to communication between different devices through other devices (i.e., requiring other devices to transfer or forward), or may refer to communication between functional units within a device and other devices through another functional unit. In other words, "sending information to a receiving device" in the present application may be understood as the destination of the information being the receiving device, and may include sending information directly or indirectly to the receiving device. "Receiving information from... (sending device)" may be understood as the source of the information being the sending device, and "receiving information from a sending device" may be understood as the source of the information being the sending device, and may include receiving information directly or indirectly from the sending device. The information may be processed as necessary between the source and destination of the information transmission, such as format changes, digital-to-analog conversion, and other processing, but the destination can understand the valid information from the source. Similar expressions in the present application may be understood in a similar way and will not be repeated here.

[0123] Third, in the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a; b; c; a and b; a and c; b and c; or a and b and c. Among them, a, b, and c can be single or multiple.

[0124] Fourth, in the embodiments of the present application, "when", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances, which does not limit the time, nor does it require that the device must perform a judgment action when it is implemented, nor does it mean that there are other limitations.

[0125] The technical solution provided in this application will be described below in conjunction with the accompanying drawings.

[0126] The technical solutions provided in this application can be applied to various communication systems, such as long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, sidelink (SL) communication system, universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA). The technical solutions provided in this application can also be applied to future communication systems, such as sixth generation (6G) mobile communication systems. This application is not limited to this.

[0127] The network system architecture provided by the embodiment of the present application mainly includes: terminal equipment and radio access network (RAN) equipment.

[0128] A terminal device can be a device or module that accesses the above-mentioned communication system and has corresponding communication functions. A terminal device can also be referred to as user equipment (UE), terminal, user device, access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal unit, terminal station, terminal device, wireless communication device, user agent, or user device. The terminal is usually provided with a communication module, circuit, or chip that performs the corresponding communication functions. The terminal is also configured with program instructions for performing the corresponding communication functions.

[0129] For example, the terminal in the embodiment of the present application can be a mobile phone, a personal digital assistant (PDA), a laptop computer, a tablet computer, a drone, a computer with wireless transceiver function, a machine type communication (MTC) terminal, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an Internet of Things (IoT) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home (such as a game console, a smart TV, a smart speaker, a smart refrigerator, and fitness equipment, etc.), a transport vehicle with wireless communication function, a communication module, and a roadside unit (RSU) with a terminal function.

[0130] Radio access network equipment can also be referred to as radio access network (RAN) nodes, access network equipment, or network equipment. Radio access network equipment is a component of a communication system that facilitates wireless access for terminals and is a device or module with corresponding communication functions. Radio access network equipment typically includes communication modules, circuits, or chips that perform the corresponding communication functions. Radio access network equipment may also be configured with program instructions for performing the corresponding communication functions and the corresponding program instructions.

[0131] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a wireless fidelity (Wi-Fi) system. A RAN node may be a macro base station, a relay node, a donor node, or a wireless controller in a CRAN scenario. Optionally, a RAN node may also be a server, a wearable device, a vehicle, or an onboard device. For example, the access network device in vehicle to everything (V2X) technology may be a road side unit (RSU).

[0132] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0133] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0134] In the embodiments of the present application, the terminal and the wireless access network device can be hardware devices, or they can be software functions running on dedicated hardware, software functions running on general-purpose hardware, such as virtualization functions instantiated on a platform (for example, a cloud platform), or entities including dedicated or general-purpose hardware devices and software functions. The present application does not limit the specific forms of the terminal and the wireless access network device.

[0135] Figures 1 to 4 are schematic diagrams of the architecture of the communication system provided by the present application. The architecture diagram of the communication system provided by the embodiment of the present application will be described in detail below.

[0136] Figure 1 is a schematic diagram of a communication architecture for satellite-to-terminal communications according to an embodiment of the present application. The method provided herein can be applied to non-terrestrial network (NTN) communications, such as satellite communications. The communication system includes a satellite base station and a terminal, where the satellite base station provides communication services to the terminal. The terminal can transmit uplink data to the satellite base station, and the satellite base station can transmit downlink data to the terminal.

[0137] FIG2 is a schematic diagram of a communication architecture for intersatellite communication according to an embodiment of the present application. For example, it can be applied to communication between satellite 1 and satellite 2. A traditional intersatellite link communication system may include two parts: an acquisition, pointing and tracking (APT) subsystem and a communication subsystem. The communication subsystem is the main body of the intersatellite communication system, and may include, for example, a communication module and a transceiver antenna as shown in FIG2 . The communication subsystem is responsible for the transmission of intersatellite information; the APT subsystem may include, for example, an APT module and an APT transmitter or receiver as shown in FIG2 . The APT subsystem is responsible for the capture, alignment and tracking between satellites. The process by which a satellite determines the incoming direction of an incident signal is called capture. After the capture is completed, the satellite receiving the incident signal adjusts the transmitted wave and aims at the receiving direction. This process is called alignment. During the entire communication process, the two satellites or the satellite and the ground station continuously perform alignment and capture processes to achieve a communication connection state. This process is called tracking.

[0138] Figure 3 is a schematic diagram of the architecture of a wireless communication system such as a cellular communication system according to an embodiment of the present application. In Figure 3 (a), a base station serves multiple terminals, and in Figure 3 (b), a terminal communicates with multiple base stations.

[0139] Figure 4 is a schematic diagram of the architecture of a wireless communication system such as a wireless local area network communication according to an embodiment of the present application. In Figure 4 (a), an access point serves multiple terminals, and in Figure 4 (b), a terminal communicates with multiple access points.

[0140] It should be understood that what is shown in FIG3 and FIG4 is only an example, and the present application does not limit the specific form and quantity of the base station, terminal or access point, and should not constitute any limitation to the present application.

[0141] With the continuous advancement of wireless communication technology, wireless signals can possess different capabilities. For example, wireless signals can be used for communication, environmental sensing, channel estimation, and so on. To meet different service requirements, a solution has been proposed in which the transmitting device allocates different time-frequency resources to signals with different capabilities. Each signal occupies a different time-frequency resource, ensuring orthogonality between the signals and preventing interference. However, this solution results in low resource utilization and cannot meet the growing demand for services.

[0142] Figure 5 shows three different schemes for mapping communication signals and perception signals onto time-frequency resources. In Figure 5 (a), the communication signal and the perception signal are mapped to different frequency domain resources, that is, the two signals occupy different frequency domain resources respectively; in Figure 5 (b), the communication signal and the perception signal are mapped to different time domain resources, that is, the two signals occupy different time domain resources respectively. The two different schemes make the communication signal and the perception signal orthogonal, so there is no interference between the two signals. However, compared with traditional communications, these two schemes are equivalent to allocating part of the frequency domain resources or time domain resources of the communication signal to the perception signal, resulting in lower spectrum efficiency.

[0143] In Figure 5(c), the communication signal and the perception signal are mapped to the same time-frequency resources, meaning that both signals occupy the same time-frequency resources. This mapping scheme does not allocate the communication signal's time-frequency resources to the perception signal, improving communication efficiency. However, since the communication signal and the perception signal lack orthogonality, they can cause significant interference.

[0144] In light of this, the present application provides a method that leverages the incomplete overlap of resources in the delay and / or Doppler domains to expand the reference signal originally mapped to a single port of the same time-frequency resource into reference signals for multiple ports. This allows for the expansion of reference signals for more ports while maintaining the same time-frequency resource occupancy. Reference signals from different ports can be used to address different service requirements, thus improving resource utilization and reducing interference between different services.

[0145] The following describes in detail the methods provided by the embodiments of the present application in conjunction with multiple figures. The multiple embodiments shown below illustrate the process of sending a reference signal and the process of receiving a reference signal from the perspectives of a transmitting device and a receiving device, respectively. The term "transmitting device" and "receiving device" are named based on the transmission and reception of reference signals, and do not indicate that the transmitting device cannot be used for reception, nor do they limit the receiving device to being unable to be used for transmission. The transmitting device and the receiving device can be the same device or different devices.

[0146] Figure 6 is a schematic flowchart of a method for transmitting a reference signal provided in an embodiment of the present application. Figure 6 uses a transmitting device as an example to describe the method provided in the present application, but this does not constitute any limitation on the present application. Furthermore, the transmitting device in Figure 6 may be replaced with a component within the transmitting device, such as a chip, a chip system, a processor, or the like, or with a logic module or software capable of implementing some or all of its functions. This application does not impose any limitations on this.

[0147] 6 , the method 600 for sending a reference signal shown in FIG6 may include steps 610 to 630. Each step in the method 600 is described in detail below.

[0148] In step 610, the transmitting device generates reference signal sequences for K ports.

[0149] Exemplarily, the transmitting device may first generate a reference signal sequence, which may be a Zadoff-Chu (ZC) sequence, a pseudo-random sequence, or a phase modulation symbol, etc., which is not limited in this application. The reference signal sequence may be referred to as a base sequence or a mother sequence.

[0150] Thereafter, the transmitting device may perform a phase shift in the time domain and / or frequency domain on the reference signal sequence to obtain reference signal sequences for K ports. For example, the reference signal sequences for the K ports include a reference signal sequence for the k1th port and a reference signal sequence for the k2th port, where k1 and k2 are integer values ​​ranging from 0 to K-1, and k1 is not equal to k2.

[0151] In one example, after the reference signal sequence is phase shifted in the frequency domain, the reference signal sequence of the k1th port and the reference signal sequence of the k2th port obtained satisfy:

[0152] in, represents the reference signal sequence of the k2th port, represents the reference signal sequence of the k1th port, "m" represents the frequency domain phase offset of the reference signal sequence for the k1th port relative to the reference signal sequence for the k2th port; "m" represents the subcarrier index relative to the frequency domain reference point; "n" represents the symbol index relative to the time domain reference point; "A" is a preconfigured value that can be preconfigured by the transmitting device or predefined by the protocol, and is not limited in this application. For a more detailed description of frequency domain reference points and time domain reference points, please refer to existing technologies, such as the relevant description in 3GPP Technical Specification (TS) 38.211, and will not be detailed here.

[0153] In another example, after the reference signal sequence is phase-shifted in the time domain, the obtained reference signal sequence of the k1th port and the reference signal sequence of the k2th port satisfy:

[0154] in, represents the phase offset in the time domain of the reference signal sequence of the k1th port relative to the reference signal sequence of the k2th port; B is a preconfigured value that can be preconfigured by the transmitting device or predefined by the protocol, which is not limited in this application. The description of other parameters that are the same as those in formula (1) can be found above and will not be repeated here.

[0155] In another example, after the reference signal sequence is phase-shifted in the time-frequency domain, the obtained reference signal sequence of the k1th port and the reference signal sequence of the k2th port satisfy:

[0156] The description of the same parameters as those in formula (1) and formula (2) can be found above and will not be repeated here.

[0157] In step 620, the transmitting device maps the reference signal sequences of the K ports to resources to obtain reference signals of the K ports.

[0158] The resource mapping in the embodiment of the present application includes not only resource mapping in the time-frequency domain, but also resource mapping in the Doppler domain and / or delay domain. For example, the transmitting device can map each value in the reference signal sequence to different resource elements (RE). Taking DMRS as an example, the sequence is mapped to RE(m,n) p,μ The value on satisfy:

[0159] in, Indicates that the port number is p k DMRS sequence; Indicates that the port number mapped to RE (m, n) is p k , the value in the DMRS sequence with the subcarrier spacing configured as μ, RE(m,n) represents the RE with the frequency domain index m and the time domain index n, is the scaling factor of DMRS (ie, Indicates the ratio of energy per resource element (EPRE) of physical downlink shared channel (PDSCH) to DMRS EPRE), w f (m′) is the code division multiplexing coefficient in the frequency domain, w t (n') is the code division multiplexing coefficient in the time domain. f (m′), w t For a more detailed description of (n′) and DMRS sequence, please refer to the existing technology, such as the relevant description in 3GPP TS38.211, which will not be described in detail herein.

[0160] Figure 7 is a schematic diagram illustrating the mapping of a reference signal sequence to time-frequency resources according to an embodiment of the present application. Figure 7 exemplarily illustrates a time-frequency resource consisting of eight symbols and eight subcarriers. However, it should be understood that this does not constitute any limitation on the present application, as the present application does not limit the size or location of the time-frequency resources to which the reference signal sequence is mapped.

[0161] The reference signal sequences of the above-mentioned K ports can be mapped to the same time-frequency resources. As shown in the figure, different values ​​in the reference signal sequence of each port in the K ports are mapped to different REs, and the reference signal sequences of the K ports are mapped to the same time-frequency resources in the time-frequency domain. The resources occupied by the reference signals of the K ports in the time-frequency domain are shown in the black solid box in Figure 7. It can be understood that the reference signals of the K ports occupy the same resources in the time-frequency domain, and the K ports are not code-division multiplexed, so the K ports cannot be distinguished in the time-frequency domain.

[0162] However, in this embodiment, because the transmitting device performs a phase shift in the time domain and / or frequency domain on the reference signal sequence before performing resource mapping, the reference signals of different ports, after being converted to the delay-Doppler domain, have a resource offset in at least one of the delay domain or the Doppler domain. This allows the reference signals of different ports to be distinguished in the delay-Doppler domain. As a result, the time-frequency resources originally used to transmit the reference signal of one port can be expanded to transmit the reference signals of multiple ports.

[0163] It should be noted that in the channel model, the frequency domain corresponds to the delay domain, and the time domain corresponds to the Doppler domain. Through transformations such as the inverse symplectic finite Fourier transform (ISFFT), the time-frequency domain signal can be converted to the delay-Doppler domain to obtain the signal distribution in the delay-Doppler domain. Alternatively, the delay-Doppler domain signal can be converted to the time-frequency domain through the symplectic finite Fourier transform (SFFT) to obtain the signal distribution in the time-frequency domain. Therefore, the ISFFT and SFFT can be used to convert signals between the time-frequency domain and the delay-Doppler domain.

[0164] Figure 8 is a schematic diagram of the delay-Doppler domain for reference signals of K ports provided in an embodiment of the present application. Taking the reference signal sequence of K ports mapped to the same time-frequency resource as shown in Figure 7 as an example, Figure 8 illustrates the resource mapping of the reference signal sequence in the delay-Doppler domain after it undergoes phase shifting in the frequency domain, time domain, and time-frequency domain.

[0165] As shown in FIG7 , the reference signal sequence is mapped to two different subcarriers in the frequency domain, mapped to two different symbols in the time domain, and mapped to four different REs in the time-frequency domain.

[0166] If the phase shift of the reference signal sequence in the frequency domain is performed in step 610, the offset of the resource in the corresponding delay domain can be obtained, as shown in the figure with the filling pattern The resource, and the fill pattern is resources, which can be expanded into reference signals for two ports.

[0167] If the phase shift of the reference signal sequence in the time domain is performed in step 610, the offset of the resource in the corresponding Doppler domain can be obtained, as shown in the figure with the filling pattern The resource, and the fill pattern is resources, which can be expanded into reference signals for two ports.

[0168] If the phase shift in the time-frequency domain is performed on the reference signal sequence in step 610, the offset of the resource in the corresponding delay-Doppler domain can be obtained, as shown in the figure with the fill pattern The resource, the fill pattern is The resource, the fill pattern is The resource, and the fill pattern is resources, which can be expanded into reference signals for four ports.

[0169] It is not difficult to see that although the reference signals of the four ports occupy the same resources in the time-frequency domain, the resources occupied by at least one domain in the delay domain or the Doppler domain are not completely the same, or in other words, do not completely overlap.

[0170] It should be understood that in Figures 7 and 8, the position and size of the reference signal in the time-frequency domain and the delay-Doppler domain, as well as the corresponding relationship with the port are examples for ease of understanding and should not constitute any limitation to this application.

[0171] For ease of understanding and explanation, the number of reference signal ports obtained through the aforementioned time-domain and / or frequency-domain phase shifting is denoted as K. That is, by mapping the reference signal sequence onto resources, the transmitting device can obtain reference signals for K ports, from port 0 to port (K-1). The reference signals for these K ports can occupy the same time-frequency resources, but the resources occupied in the delay domain or Doppler domain are not exactly the same.

[0172] It can be understood that the number of ports K is related to the number of REs to which the reference signal sequence is mapped in an RB. For example, if the reference signal sequence is phase-shifted in the frequency domain but not in the time domain, and the reference signal sequence is mapped to X subcarriers in an RB, a maximum of X ports can be obtained in the delay domain, i.e., 1 < K ≤ X. If the reference signal sequence is phase-shifted in the time domain but not in the frequency domain, and the reference signal sequence is mapped to Y subcarriers in an RB, a maximum of Y ports can be obtained in the Doppler domain, i.e., 1 < K ≤ Y. If phase-shifting is performed in both the time and frequency domains, and the reference signal sequence is mapped to X × Y REs in an RB, a reference signal with a maximum of X × Y ports can be obtained in the delay-Doppler domain. In other words, by phase-shifting in at least one of the time or frequency domains, a reference signal with a maximum of X × Y ports can be obtained, i.e., 1 < K ≤ X × Y. For ease of understanding and explanation, the maximum number of ports that can be obtained by phase shifting in at least one domain in the time domain or frequency domain is recorded as K. max , that is, 1<K≤K max , K max It is X (phase shift is performed in the frequency domain but not in the time domain), or Y (phase shift is performed in the time domain but not in the frequency domain), or X×Y (phase shift is performed in both the time domain and the frequency domain).

[0173] In step 630 , the transmitting device transmits reference signals of K ports.

[0174] After the transmitting device completes resource mapping of the reference signals of the K ports, it transmits the reference signals of the K ports. The reference signals of the K ports can be used for sensing, communication, partially for sensing, partially for communication, or for other services, which is not limited in this application.

[0175] Based on the above technical solution, the transmitting device can associate a reference signal sequence with a port before resource mapping. By performing phase shifting in the time and / or frequency domain, reference signal sequences for multiple ports are obtained. Phase offsets in the time and / or frequency domains exist between the reference signal sequences of different ports. After resource mapping, the reference signal sequences of the multiple ports can be mapped to the same time-frequency domain resources to obtain reference signals for the multiple ports. The reference signals of the multiple ports occupy different resources in the delay and / or Doppler domains. The reference signals of the multiple ports can be used to meet different service requirements, improving resource utilization without causing significant interference.

[0176] As can be seen from step 620, there are three possible situations in which the resources occupied by the reference signals of the K ports in at least one of the delay domain or the Doppler domain are not completely the same. The three possible situations will be described in detail below.

[0177] A possible scenario in which the resources occupied by the reference signals of the K ports in at least one of the delay domain or the Doppler domain are not completely identical is that the resources occupied by the reference signals of the K ports in the delay domain partially overlap or do not overlap at all. In this case, the phases of the reference signals of the K ports in the frequency domain are different from each other, or in other words, there is a phase difference between the reference signals of the K ports in the frequency domain. In other words, the reference signals of the K ports can be obtained by performing a frequency domain phase shift on the reference signal of the same port, and the reference signal of the same port occupies K different subcarriers in one RB, or in other words, occupies different REs in the frequency domain.

[0178] Optionally, the reference signals of the K ports may have different allocation strategies for the occupation of delay domain resources. Table 1 shows two different allocation strategies.

[0179] Table 1

[0180] In Strategy 1, K ports are used. That is, if these K ports are fully occupied, the delay domain resources occupied by the reference signals of these K ports can be evenly distributed to the reference signals of each port. In other words, resources are evenly allocated to the K ports based on service requirements. In this case, the transmitting device can flexibly adjust the resource occupation of the reference signals of multiple ports based on service requirements. Even if the number of ports varies, the transmitting device can fully occupy the resources and evenly distribute them to multiple ports, thereby fully utilizing the resources.

[0181] In strategy 2, using K max K ports among the ports, that is, in the K max Some of the ports are used, that is, not all K ports are used. max ports, then you can take the K max The reference signals of the K ports with the largest interval among the reference signals of the K ports. max To allocate resources, under different business requirements, the number of ports K can be adjusted from K to max Select some ports from the ports to use. In this case, K max The distribution of ports in the resources can be predefined, for example, using a pattern. This eliminates the need for the transmitting device to allocate resources each time it transmits a reference signal, thereby reducing processing complexity for the transmitting device. Furthermore, by selecting K ports with the largest port index interval, the distribution of the selected K ports in the resources can be more dispersed, thereby reducing mutual interference between different ports.

[0182] For example, K maxis 16 and K is 4, then the four ports can be the 0th, 4th, 8th, and 12th ports, or the 1st, 5th, 9th, and 13th ports, or the 2nd, 6th, 10th, and 14th ports, or the 3rd, 7th, 11th, and 15th ports among the 16 ports.

[0183] Optionally, a frequency domain phase offset between a reference signal of a k1th port among the K ports and a reference signal of a k2th port among the K ports is related to k1-k2. In other words, a frequency domain phase offset between reference signals of any two ports among the K ports is related to a difference between the port numbers of the two ports.

[0184] Exemplarily, taking one RB as an example, the reference signal of the k1th port and the reference signal of the k2th port mapped into one RB satisfy Formula (1).

[0185] There are two possible designs for the parameter A in formula (1). One possible design is: A = M seq , hereinafter referred to as Design 1; another possible design is: A = K, hereinafter referred to as Design 2. When A takes different values, the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain is different.

[0186] The following is a detailed description of the two possible designs.

[0187] Design 1: A is M seq , accordingly, for strategy 1, satisfy:

[0188] Or, applying strategy two, satisfy:

[0189] Where X represents the number of REs (or subcarriers) occupied by the reference signals of the K ports in an RB in the frequency domain, and M seq Indicates the total number of REs (or subcarriers) occupied by the reference signals of the K ports in the frequency domain, X and M seq All are positive integers.

[0190] For example, if the reference signals of the K ports occupy z RBs, the total number of REs occupied by the reference signals of the K ports in the frequency domain is: M seq =z×X.

[0191] From formula (5a) and formula (5b), we can see that the minimum phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain is X. In this way, the reference signal of the k1th port and the reference signal of the k2th port do not overlap in the delay domain resources; the maximum phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain is In this way, the K ports or K max The reference signals of the ports can all be mapped to the frequency domain resources and do not completely overlap in the delay domain.

[0192] Taking the examples given in Figures 7 and 8 above as an example, K max is 2, assuming that the 0th port is the reference port, M seq If the value is 12, the minimum phase offset of the reference signal at port 1 relative to the reference signal at port 0 in the delay domain is 2, and the maximum phase offset is 6 (obtained from 12 / 2). Therefore, the reference signals of these two ports have different resource distributions in the delay domain, and may or may not overlap at all.

[0193] Further, That is, the phase offset in the frequency domain is taken to the maximum value, so that K max The reference signals of each port are dispersed as much as possible in the delay domain, thereby reducing the interference between the ports to a greater extent.

[0194] Design 2: A is K, when X<(k1-k2), satisfy:

[0195] When X>(k1-k2), no matter No matter what value is taken, the reference signal of the k1th port and the reference signal of the k2th port will overlap in the resources of the delay domain.

[0196] Further, That is, the phase offset in the frequency domain is taken to the maximum value, so that K max The reference signals of each port are dispersed as much as possible in the delay domain, thereby reducing the interference between the ports to a greater extent.

[0197] From the two possible values ​​of A listed above, we can see that It can be an integer or a fraction. This design can better cope with the expansion in the delay domain.

[0198] In another possible scenario where the reference signals of the K ports occupy different resources in at least one of the delay domain or the Doppler domain, the reference signals of the K ports are mapped to resources in the Doppler domain that do not overlap, or do not completely overlap. In this case, the phases of the reference signals of the K ports in the time domain are different from each other, or in other words, there is a phase difference between the reference signals of the K ports in the time domain. In other words, the reference signals of the K ports can be obtained by performing a time domain phase shift on the reference signal of the same port, and the reference signal of the same port occupies K different symbols in one RB, or in other words, occupies different REs in the time domain.

[0199] Optionally, the reference signals of the K ports may have different allocation strategies for occupying Doppler domain resources, such as the two different allocation strategies shown in Table 1. For more details, please refer to the above description in conjunction with Table 1, which will not be repeated here.

[0200] Optionally, a time domain phase offset between a reference signal of a k1th port among the K ports and a reference signal of a k2th port among the K ports is related to k1-k2, where k1 and k2 are integer values ​​ranging from 0 to K-1, and k1 is not equal to k2. In other words, a time domain phase offset between the reference signals of any two ports among the K ports is related to a difference in the phases of the two ports.

[0201] Exemplarily, taking one RB as an example, the reference signal of the k1th port and the reference signal of the k2th port mapped into one RB satisfy Formula (2).

[0202] There are two possible designs for the parameter B in formula (2). One possible design is: B = N seq , hereinafter referred to as Design 3; another possible design is: B = K, hereinafter referred to as Design 4. When B takes different values, the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain is different.

[0203] The following is a detailed description of the two possible designs.

[0204] Design 3: B is N seq , accordingly, for strategy 1, satisfy:

[0205] Or, applying strategy two, satisfy:

[0206] Among them, Y represents the number of symbols occupied by the reference signals of the K ports in an RB in the time domain, Nseq Indicates the total number of symbols occupied by the reference signals of the K ports in the time domain, Y and N seq All are positive integers.

[0207] For example, if the reference signals of the K ports occupy z RBs, the total number of REs occupied by the reference signals of the K ports in the time domain is: N seq =z×Y.

[0208] From formula (7a) and formula (7b), we can see that the minimum phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain is Y. In this way, the reference signal of the k1th port and the reference signal of the k2th port in the Doppler domain do not overlap. The maximum phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain is or In this way, the K ports or the K max The reference signals of the ports can all be mapped to the time domain resources and do not completely overlap in the Doppler domain.

[0209] Taking the examples given in Figures 7 and 8 above as an example, K max is 2, assuming that the 0th port is the reference port, N seq If the phase offset of the reference signal at port 1 relative to the reference signal at port 0 in the Doppler domain is 14, then the minimum phase offset is 2, and the maximum phase offset is 7 (obtained by 14 / 2). Therefore, the reference signals of these two ports have different resource distributions in the Doppler domain, and may or may not overlap at all.

[0210] Further, That is, the phase offset in the time domain is taken to the maximum value, so that K max The reference signals of each port are dispersed as much as possible in the Doppler domain, thereby reducing the interference between the ports to a greater extent.

[0211] Design 4: B is K, when Y<(k1-k2), satisfy:

[0212] When Y>(k1-k2), no matter For any value, the reference signal of the k1th port and the reference signal of the k2th port will overlap in the Doppler domain resources.

[0213] Further, That is, the phase offset in the time domain is taken to the maximum value, so that K maxThe reference signals of each port are dispersed as much as possible in the Doppler domain, thereby reducing the interference between the ports to a greater extent.

[0214] From the two possible values ​​of B listed above, we can see that It can be an integer or a fraction. This design can better cope with the expansion in the Doppler domain.

[0215] The two possible situations mentioned above are that the transmitting device performs phase shift in the time domain or frequency domain based on the reference signal of the k2th port, so that the reference signals of a total of K ports are mapped to non-overlapping resources in the delay domain or Doppler domain.

[0216] Another possible scenario in which the reference signals of the K ports occupy different resources in at least one of the delay domain or the Doppler domain is that the reference signals of the K ports are mapped to resources that do not overlap, or do not overlap at all, in the delay domain and the Doppler domain. In this case, the phases of the reference signals of the K ports are different in the frequency domain, or in other words, there is a phase difference between the reference signals of the K ports in the frequency domain. In other words, the reference signals of the K ports can be obtained by performing frequency domain and frequency domain phase shifting on the reference signal of the same port, and the reference signal of the same port occupies K different REs in one RB.

[0217] Optionally, the phase offsets in the time domain and frequency domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports are both related to k1-k2, where k1 and k2 are integer values ​​between 0 and K-1, and k1 is not equal to k2. In other words, the phase offsets in the time domain and frequency domain between the reference signals of any two ports among the K ports are both related to the difference between the port numbers of the two ports.

[0218] Exemplarily, taking one RB as an example, the reference signal of the k1th port and the reference signal of the k2th port mapped into one RB satisfy Formula (3).

[0219] Regarding the values ​​of A and B in formula (3) and and The formula that satisfies this condition can be found in the above content for details, so I will not elaborate on it here.

[0220] Optionally, the reference signal sequence is phase-shifted in the time domain and / or frequency domain, and the resource distribution occupied by the reference signals of the multiple ports obtained by expansion in the delay-Doppler domain depends on M seq and N seq The value of , as well as the values ​​of A and B.

[0221] An example, based on the above strategy 1, in Mseq and N seq If the value of is certain, if A is M seq , B is N seq , When the reference signal sequence is phase-shifted in the time-frequency domain, the reference signals of the obtained K ports are resource-shifted in the corresponding delay-Doppler domain, as shown in FIG9 , which shows resources with four different filling patterns. Different filling patterns represent different ports.

[0222] If A is K and B is K, When the reference signal sequence is phase-shifted in the time-frequency domain, the reference signals of different extended ports are resource-shifted in the corresponding delay-Doppler domain, as shown in FIG10 , which shows resources with four different filling patterns. Different filling patterns represent different ports.

[0223] The resources occupied by the reference signals of the K ports in the delay-Doppler domain can be varied with M seq and N seq For example, if A is K and B is K, In another example, after the reference signal sequence is phase-shifted in the time-frequency domain, the reference signals of different ports are extended and resource-shifted in the corresponding delay-Doppler domain, as shown in Figure 11, where four different filling patterns represent different ports. seq and N seq The value of is different, and the resource distribution occupied by the reference signals of the four extended ports in the delay-Doppler domain is different.

[0224] It should be understood that the resource distribution of the reference signals of the K ports in the time-frequency domain and the delay-Doppler domain shown in the above multiple figures is only an example and should not constitute any limitation to the present application.

[0225] One possible scenario is that the reference signal transmitter and receiver are the same device. In this case, the transmitter can process the received reference signal according to the above parameters. The specific processing flow can be found in the relevant description of the method below and will not be described in detail here.

[0226] Another possible situation is that the sending device and the receiving device of the reference signal are different devices. In this case, the sending device can indicate the phase offset between the reference signals of the K ports in the time domain and / or frequency domain to the receiving device through signaling. One possible implementation method is that the sending device can indicate the phase offset of the reference signals of the other ports in the K ports except the reference port relative to the reference signal of the reference port in the frequency domain through signaling. The reference port can be any one of the K ports or a K maxThe reference port can be determined according to a preset rule. For example, the preset rule may specify that the port with the smallest (or largest) port number among the K ports be used as the reference port, or the port with the smallest (or largest) port number among the K ports be used as the reference port. max The port with the smallest (or largest) port number among the ports is used as the reference port. Alternatively, the reference port can also be determined by the sending device itself and indicated to the receiving device through signaling. This application does not limit this.

[0227] Optionally, the method further includes: the transmitting device transmitting first information to the receiving device, the first information being used to indicate a frequency domain phase offset of reference signals of ports other than the reference port, relative to the reference signal of the reference port, among the reference signals of the K ports. Accordingly, the receiving device receives the first information from the transmitting device. Optionally, the first information is further used to indicate the reference port. For example, the first information may carry the port number of the reference port.

[0228] Optionally, the method further includes: the transmitting device transmitting second information to the receiving device, the second information indicating a time domain phase offset of reference signals of ports other than the reference port, relative to the reference signal of the reference port, among the reference signals of the K ports. Accordingly, the receiving device receives the second information from the transmitting device. Optionally, the second information further indicates the reference port. For example, the second information may carry the port number of the reference port.

[0229] Among them, the reference port used to indicate the phase offset in the frequency domain between the reference signals of the K ports and the reference port used to indicate the phase offset in the time domain between the reference signals of the K ports can be the same reference port or different reference ports, without limitation.

[0230] After receiving the first information and / or second information, the receiving device can determine, based on the first information and / or second information, the phase offsets of the reference signals of the other K-1 ports relative to the reference signal in the time domain and / or frequency domain, thereby obtaining the reference signals for the K ports. A more detailed description of how the receiving device processes the received reference signals can be found in the relevant description of the method below and is not further described here.

[0231] It should be noted that the reference signals of the above-mentioned K ports may be obtained by performing a phase shift in the time domain, or by performing a phase shift in the frequency domain, or by performing a phase shift in the time domain and the frequency domain. Therefore, when the first information is used to indicate the phase offset of other ports relative to the reference port in the frequency domain, the phase offset of some ports in the frequency domain may be zero. When the second information is used to indicate the phase offset of other ports relative to the reference port in the time domain, the phase offset of some ports in the time domain may be zero. In this case, the first information and the second information may indicate that the phase offset of the port with zero phase offset is zero, or may not indicate it. This application does not limit this.

[0232] It should be understood that the method of indicating the phase offset in the time domain and / or frequency domain between the reference signals of the K ports through signaling is not limited to the method provided above. Based on the same concept, technicians in this field can also make simple transformations on this basis to obtain the same or similar effects. These transformations should fall within the scope of protection of this application.

[0233] Based on the above scheme, the transmitting device indicates the phase offset in the time domain and / or frequency domain between the reference signals of the K ports to the receiving device through signaling, so that the receiving device can extract the reference signal sequence of each port from the received signal, and then use it in different services to meet different needs.

[0234] Figure 12 is a schematic flowchart of a method for receiving a reference signal provided by an embodiment of the present application. Figure 12 uses a receiving device as an example to describe the method provided by the present application, but this should not constitute any limitation on the present application. In addition, the receiving device in Figure 12 can also be replaced by a component in the receiving device, such as a chip, a chip system, a processor, etc., and can also be replaced by a logic module or software that can implement some or all of its functions. This application does not limit this.

[0235] 12 , the method 1200 for receiving a reference signal shown in FIG12 may include steps 1210 to 1230. Each step in the method 1200 is described in detail below.

[0236] In step 1210 , a receiving device receives reference signals of K ports.

[0237] The receiving device may receive the reference signals of the K ports on a time-frequency resource, which is also the time-frequency resource to which the reference signal sequence is mapped in the method 600 described above.

[0238] As previously mentioned, the reference signals of the K ports can be used for sensing and / or communication. In sensing services, the reference signals can also be referred to as sensing signals. Furthermore, in sensing services, the transmitting and receiving devices of the sensing signals can be the same device or different devices.

[0239] Table 2 below illustrates six possible sensing modes, distinguishing between the sending and receiving devices of the sensing signal. Specifically, these modes are: RAN node self-transmitting and self-receiving, RAN node A transmitting and RAN node B receiving, RAN node transmitting and terminal receiving, terminal transmitting and RAN node receiving, terminal self-transmitting and self-receiving, and terminal A transmitting and terminal B receiving. As can be seen, the sending device can be either a terminal or a RAN node, and the receiving device can be either a terminal or a RAN node.

[0240] Table 2

[0241] It can be understood that when the receiving device is the same device as the sending device mentioned above, the method can also be executed by the sending device.

[0242] The specific contents of the reference signals of the K ports received in step 1210 are the same as the contents of the reference signals of the K ports generated and sent in method 600 , and reference may be made to the aforementioned method 600 , which will not be described in detail.

[0243] In step 1220, the receiving device converts the reference signals of the K ports from the time-frequency domain to the delay-Doppler domain.

[0244] As previously described, the receiving device receives the reference signal on a time-frequency resource, and the reference signals of the K ports cannot be distinguished from this time-frequency resource. Therefore, the receiving device can convert the reference signals of the K ports from the time-frequency domain to the delay-Doppler domain. Exemplarily, the receiving device can perform an ISFFT transform on the reference signals of the K ports to obtain reference signals of the K ports in the delay-Doppler domain. The resources occupied by the reference signals of the K ports in the delay-Doppler domain do not completely overlap.

[0245] In step 1230 , the receiving device extracts reference signal sequences of K ports from the delay-Doppler domain.

[0246] Since the resources occupied by the reference signals of the K ports in the delay-Doppler domain do not completely overlap, the receiving device can distinguish the reference signals of the K ports and further extract the reference signal sequences of the K ports.

[0247] For example, if the receiving device can know the phase offset between the reference signals of the K ports in the time domain and / or frequency domain, it can determine the resource position and size occupied by the reference signal of each port in the delay-Doppler domain, and then obtain the reference signal of each port on the corresponding resource, and recover the reference signal sequence of the corresponding port.

[0248] As previously mentioned, the receiving device and the transmitting device may be the same device or different devices. If the receiving device and the transmitting device are the same device, the receiving device can determine the phase offsets between the reference signals of the K ports in the time domain and / or frequency domain. Therefore, based on the phase offsets between the reference signals of the K ports in the time domain and / or frequency domain, the reference signal sequences corresponding to the reference signals of the K ports can be extracted from the delay-Doppler domain.

[0249] If the receiving device and the transmitting device are different devices, the receiving device can determine the phase offset in the frequency domain between the reference signals of the K ports by first information received from the transmitting device, and / or determine the phase offset in the time domain between the reference signals of the K ports by second information received from the transmitting device.

[0250] One possible implementation is that the transmitting device may indicate to the receiving device via signaling the phase offsets of the reference signals of the other ports among the K ports except the reference port relative to the reference port in the time domain and / or frequency domain.

[0251] Optionally, the method also includes: the receiving device receives first information from the sending device, where the first information is used to indicate the phase offset in the frequency domain of the reference signals of the K ports other than the reference port relative to the reference signal of the reference port.

[0252] Optionally, the method further includes: the receiving device receives second information from the sending device, where the second information is used to indicate a phase offset in the time domain of reference signals of other ports except the reference port among the reference signals of the K ports relative to the reference signal of the reference port.

[0253] For more detailed information about the first information, the second information and the reference port, please refer to the relevant description in the above method 600, which will not be repeated here.

[0254] The receiving device can further apply the reference signals of the K ports to different services. For example, the reference signals of the K ports can be used for communication and / or perception. Thus, the reference signals of different ports occupying the same time-frequency resources can be used to implement communication and perception services respectively.

[0255] Based on the above technical solution, after receiving reference signals from multiple ports, the receiving device converts them from the time-frequency domain to the delay-Doppler domain and further extracts reference signal sequences corresponding to the reference signals of K ports from the delay-Doppler domain. These reference signals of multiple ports can be used for various services such as communication and / or sensing. This not only improves spectrum utilization but also reduces interference between different services.

[0256] Figure 13 is a schematic flowchart of a method for transmitting a reference signal sequence provided in an embodiment of the present application. Figure 13 uses a transmitting device as an example to describe the method provided in this application, but this should not constitute any limitation on this application. Furthermore, the transmitting device in the figure can be replaced with a component within the transmitting device, such as a chip, a chip system, a processor, etc., or with a logic module or software capable of implementing some or all of its functions. This application does not impose any limitations on this.

[0257] 13 , the method 1300 for sending a reference signal sequence shown in FIG13 may include steps 1310 to 1320. Each step in the method 1300 is described in detail below.

[0258] In step 1310, the transmitting device generates a reference signal sequence.

[0259] The content of the transmitting device generating the reference signal sequence is similar to step 610 in method 600. For details, please refer to step 610 in method 600. Alternatively, the transmitting device can also generate the reference signal sequence based on existing technologies, which will not be repeated here.

[0260] In step 1320, the transmitting device repeatedly transmits a reference signal sequence over a continuous period of time domain resources.

[0261] The transmitting device repeatedly transmits the reference signal sequence on consecutive time domain resources. This means that each reference signal sequence transmitted by the transmitting device is continuous within the time domain resource, and that two consecutive reference signal sequences transmitted are also continuous within the time domain resource. In other words, no cyclic prefix (CP) is inserted between two consecutive reference signal sequences, or in other words, the transmitting device does not insert a CP before each reference signal sequence transmission.

[0262] One possible implementation method is that the transmitting device performs a phase shift in the time domain on the reference signal sequence that is repeatedly sent each time. The amount of each phase shift is determined based on the phase of the reference signal sent last time in the time domain, the length of the CP, and the number of fast Fourier transform (FFT) points. In this way, the position of the reference signal sequence that is repeatedly sent each time in the time domain can be shifted forward by the length of a CP, so that the position originally used to carry the CP is used to carry the reference signal sequence.

[0263] For example, the phase of the reference signal sequence sent by the transmitting device for the nth time in the time domain is different from the phase of the reference signal sequence sent for the (n-1)th time by a factor of The offset, that is: Among them, α n represents the reference signal sequence sent for the nth time, α n-1 represents the reference signal sequence sent for the (n-1)th time, L n Indicates the length of CP, M FFT Indicates the number of FFT points. n and M FFT It can be predefined, such as protocol predefined.

[0264] Since the reference signal of each port in the K ports is in the time domain resource, the CP length of the reference signal sequence sent each time is L n The same, and the number of points M for each FFT transformation FFT The phase offset between two adjacent reference signal sequences is equal, which is

[0265] Figure 14 shows a schematic diagram of repeatedly transmitting a reference signal sequence over a continuous time domain resource. For ease of understanding and illustration, Figure 14(a) illustrates the distribution of the repeatedly transmitted reference signal sequence over the time domain resource without using this solution, while Figure 14(b) illustrates the distribution of the repeatedly transmitted reference signal sequence over the time domain resource with using this solution.

[0266] Figures 14 (a) and (b) illustrate a continuous time domain resource segment, which may be distributed across six orthogonal frequency division multiplexing (OFDM) symbols. Each OFDM symbol carries five sampling points and a CP with a length of two sampling points in the time domain. For ease of distinction and explanation, each sampling point is represented by a different number in the figure. A reference signal sequence includes five values, represented by the numbers "1" to "5."

[0267] In Figure 14(a), in each OFDM symbol, the last two values ​​of the reference signal sequence are added before the reference signal sequence as the CP. That is, in each OFDM symbol, five sampling points (indicated by "1" to "5" in the figure) are located after the CP (indicated by "4" and "5" in the figure). In other words, each OFDM symbol is used to transmit the reference signal sequence once, and the six OFDM symbols in the figure are used for six transmissions of this reference signal sequence. Because the CP is inserted before the five sampling points of each OFDM symbol, the reference signal sequences of two adjacent transmissions in these six transmissions are discontinuous in the time domain. The tail of the reference signal sequence in each transmission is continuous with the CP in the next OFDM symbol.

[0268] In Figure 14(b), except for the CP inserted before the 5 sampling points in the first OFDM symbol, no CP is inserted before the sampling points in the next 5 OFDM symbols, and the reference signal sequence sent next follows the reference signal sequence sent last. In the figure, starting from the first repeated transmission of the reference signal sequence, the last two values ​​are no longer added to the reference signal sequence sent this time as the CP. Therefore, the tail of each reference signal sequence sent is continuous with the head of the reference signal sequence of the next reference signal, that is, the reference signal sequences sent twice are continuous in the time domain. In this way, the 6 OFDM symbols that could originally be used to send 6 reference signal sequences can be used to send 8 reference signal sequences. Therefore, more resources can be used to send valid information, improving resource utilization.

[0269] It should be noted that the reference signal sequence illustrated above in conjunction with FIG14 can be mapped into a reference signal for one port or into reference signals for multiple ports. If mapped into reference signals for multiple ports, the reference signals for the multiple ports can be frequency-division multiplexed or code-division multiplexed, which is not limited in this application. Of course, the reference signals for the multiple ports can also be time-division multiplexed.

[0270] Figure 15 shows another schematic diagram of repeatedly transmitting a reference signal sequence over a continuous time domain resource. Unlike Figure 14, each OFDM symbol shown in Figures 15(a) and 15(b) carries six sampling points. In Figure 15(a), the values ​​of the first three sampling points are the three values ​​in the reference signal sequence of one port, represented by different numbers "1" to "3" in the figure. The values ​​of the last three sampling points are punctured, or in other words, the values ​​of the last three sampling points are zero, represented by blank boxes in the figure. In Figure 15(b), the first three sampling points are punctured, or in other words, the values ​​of the first three sampling points are zero, represented by blank boxes in the figure; the values ​​of the last three sampling points are the three values ​​in the reference signal sequence of another port, represented by different numbers "1" to "3" in Figure 15(b). That is, Figures 15(a) and 15(b) show the distribution of the reference signals of two ports of time division multiplexing on the time domain resources. The reference signal sequence for each port can be understood as the values ​​of the six sampling points in the figure. Therefore, the end of each transmitted reference signal sequence is continuous with the beginning of the next reference signal sequence, that is, the reference signal sequences of two adjacent transmissions are continuous in the time domain.

[0271] Based on the above technical solution, the transmitting device can repeatedly send the reference signal sequence multiple times on a continuous time domain resource. By shifting the phase of the reference signal sequence in the time domain, the reference signal sequences sent twice adjacently are made continuous. In this way, the time domain resources can be fully utilized and resource utilization can be improved.

[0272] Figure 16 is a schematic flowchart of a method for receiving a reference signal sequence provided in an embodiment of the present application. Figure 16 uses a receiving device as an example to describe the method provided in the present application, but this should not constitute any limitation on the present application. Furthermore, the receiving device in the figure can be replaced with a component within the receiving device, such as a chip, a chip system, a processor, etc., or with a logic module or software capable of implementing some or all of its functions. This application does not impose any limitations on this.

[0273] 16 , the method 1600 for receiving a reference signal sequence shown in FIG16 may include steps 1610 to 1620. Each step in the method 1600 is described in detail below.

[0274] In step 1610, a receiving device receives a repeatedly transmitted reference signal sequence over a continuous period of time domain resources.

[0275] The specific content of step 1610 is similar to that of step 1320 in method 1300. Please refer to step 1320 in the aforementioned method 1300 and will not be repeated here.

[0276] In step 1620, the receiving device obtains a reference signal sequence based on the received repeatedly transmitted reference signal sequence.

[0277] The receiving device performs combining processing based on the received repeatedly transmitted reference signal sequence to obtain the reference signal sequence.

[0278] Based on the above technical solution, the receiving device can receive a repeatedly transmitted reference signal sequence on a continuous time domain resource. The reference signal sequences sent twice adjacently are continuous, so that the continuous time domain resources can be fully utilized, thereby improving resource utilization, and the received reference signal sequence can be used for perception or communication, which can improve perception performance or communication performance.

[0279] It is understood that the aforementioned method 600 and method 1300 can be combined or implemented separately. Correspondingly, the method 1200 and method 1600 can be combined or implemented separately, and this application does not limit this.

[0280] Exemplarily, if method 600 and method 1300 are combined, among the reference signals of the K ports described in method 600, the reference signal of each port occupies a continuous time domain resource, and the time domain resource carries a repeatedly transmitted reference signal sequence. Each time the reference signal sequence is transmitted, it is continuous in the time domain resource, and the reference signal sequences transmitted twice adjacently are continuous in the time domain resource.

[0281] Optionally, among the K ports, the reference signal sequence of the k1th port and the reference signal sequence of the k2th port satisfy:

[0282] or,

[0283] or,

[0284] Among them, formula (9) represents the reference signal sequence in the frequency domain with a size of After the phase shift of , the reference signal sequence of each repeated transmission is further phase-shifted in the time domain compared with the reference signal sequence of the last transmission, so that the reference signal sequence of the last transmission has a phase difference of in the time domain compared with the reference signal sequence of the previous transmission. The phase offset of the reference signal sequence is: After the phase shift of , the reference signal sequence sent each time is further phase-shifted in the time domain compared with the reference signal sequence sent last time; Formula (11) represents the phase shift of the reference signal sequence in the frequency domain. The phase shift is , and the magnitude is After the phase shift is performed, the phase of each repeatedly sent reference signal sequence is further shifted in the time domain compared with the reference signal sequence sent last time.

[0285] Based on the above technical solution, the transmitting device performs a time and / or frequency domain phase shift on a reference signal sequence for a particular port, and then repeatedly transmits the reference signal sequence for that port over a continuous time domain resource. Each transmitted reference signal sequence is continuous within the time domain resource, and the reference signal sequences transmitted between two adjacent transmissions are continuous within the time domain resource. This allows full utilization of the continuous time domain resource, thereby improving resource utilization.

[0286] In the embodiments described above with reference to the various figures, there is no limitation on the reference signal sequence.

[0287] Optionally, the reference signal sequence mentioned above may also be a DMRS sequence, a CSI-RS sequence, a PRS sequence, or an SRS sequence, etc., which is not limited in this application. Accordingly, the reference signal may be a DMRS, a CSI-RS, a PRS, or an SRS, etc., which is not limited in this application.

[0288] In one example, the reference signal sequence is a DMRS sequence. FIG17 is a schematic diagram of the distribution of a DMRS sequence on an RB provided by an embodiment of the present application.

[0289] The transmitting device may map the DMRS sequence to the time-frequency resources based on the following formula (12):

[0290] in, For the p k The DMRS sequence of each port, Indicates that the port number is p mapped on RE (m, n) k , the value in the DMRS sequence with subcarrier spacing configured as μ, about w f (m'), w t For a more detailed description of (n′), the frequency domain reference point and the time domain reference point, please refer to the relevant description in step 610 of the above method 600, which will not be repeated here.

[0291] In this embodiment, the transmitting device may perform a phase shift in the time domain and / or frequency domain on the values ​​mapped to different REs according to the implementation manner provided in the above method 600. For example, after the phase shift in the frequency domain, the reference signal between two different ports (e.g., the k1th port and the k2th port) may satisfy: After phase shift in the time domain, the reference signal between two different ports (such as the k1th port and the k2th port) satisfies: After phase shift in the time domain and frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) satisfies:

[0292] in, represents the phase offset in the frequency domain between the reference signal of the k1th port and the reference signal of the k2th port, Indicates the phase offset in the time domain between the reference signal of the k1th port and the reference signal of the k2th port. and The value of is related to one or more of the following parameters: the number of supported ports, cell identifier, the number of REs, and the number of additional DMRSs.

[0293] As another example, the reference signal sequence mentioned above may be a CSI-RS sequence, and the transmitting device may map the CSI-RS sequence to the time-frequency resources based on the following formula (13):

[0294] in, Indicates the pth k The CSI-RS sequence of each port, Indicates that the port number mapped to RE (m, n) is p k , the value in the CSI-RS sequence with subcarrier spacing μ, RE(m,n) represents the RE with frequency domain index m and time domain index n. The frequency domain index m is determined based on a predefined frequency domain reference point, and the time domain index n is determined based on a predefined time domain reference point. CSIRS is the scaling factor of CSI-RS (i.e., β DMRS Indicates the ratio of PDSCH EPRE to CSI-RS EPRE), w f (m′) is the code division multiplexing coefficient in the frequency domain, w t (n') is the code division multiplexing coefficient in the time domain. f (m′), w t For more detailed descriptions of parameters such as (n′) and frequency domain reference points and time domain reference points, please refer to the relevant descriptions of 3GPP TS 38.211, which will not be described in detail in this article.

[0295] In this embodiment, the transmitting device may perform a phase shift in the time domain and / or frequency domain on the values ​​mapped to different REs according to the method provided in the above method 600. For example, after the phase shift in the frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) may satisfy: After phase shift in the time domain, the reference signal between two different ports (such as the k1th port and the k2th port) satisfies: After phase shifting in the time domain and frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) satisfies:

[0296] in, Indicates the phase offset in the frequency domain between the reference signal of the k1th port and the reference signal of the k2th port, Indicates the phase offset in the time domain between the reference signal of the k1th port and the reference signal of the k2th port. and The value of is related to one or more of the following parameters: the number of CSI-RS ports supported by the transmitting device, the cell identifier, the number of REs for CSI-RS, and the number of CSI-RS symbols.

[0297] In another example, the reference signal sequence mentioned above may be a PRS sequence, and the transmitting device may map the PRS sequence to the time-frequency resources based on the following formula (14):

[0298] in, Indicates the pth k The PRS sequence of each port, Indicates the mapping RE (k, l) on which the port number is p k , the value in the PRS sequence with subcarrier spacing configured as μ, β PRS is the scaling factor of the PRS, (i.e., β PRS Indicates the ratio of PDSCH EPRE to PRS EPRE), mod represents the remainder returned when two numbers are divided, for example, a mod b = c means the remainder c of a divided by b is returned.

[0299] The value of k′ can be found in Table 7.4.1.7.3-1 of TS 38.211. Indicates the comb size (also called comb density) used in the frequency domain, which can be used to indicate the subcarrier spacing within each symbol of the PRS on the time-frequency resource. Indicates the offset of the resource unit, Given by the higher-layer parameter "dl-PRS-CombSizeN-AndReOffset"; Indicates the first symbol in the time slot where the downlink PRS is located, which is given by the high-level parameter "dl-PRS-ResourceSymbolOffset"; L PRSIndicates the size of the downlink PRS resource in the time domain, which can be expressed by the number of symbols contained. PRS ∈{2,4,6,12}.

[0300] In this embodiment, the transmitting device may perform a phase shift in the time domain and / or frequency domain on the values ​​mapped to different REs according to the method provided in the above method 600. For example, after the phase shift in the frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) may satisfy: After phase shift in the time domain, the reference signal between two different ports (such as the k1th port and the k2th port) satisfies: After phase shifting in the time domain and frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) satisfies:

[0301] in, represents the phase offset in the frequency domain between the reference signal of the k1th port and the reference signal of the k2th port, Indicates the phase offset in the time domain between the reference signal of the k1th port and the reference signal of the k2th port. and The value of is related to one or more of the following parameters: the number of PRS ports supported, the number of REs of PRS, and the number of PRS symbols.

[0302] As another example, the reference signal sequence mentioned above may be an SRS sequence, and the transmitting device may map the SRS sequence to the time-frequency resources based on the following formula (15):

[0303] in, Indicates the pth k The SRS sequence of each port, Indicates the mapping RE (k, l) on which the port number is p k The value in the SRS sequence, N ap Indicates the number of SRS antenna ports, N ap ∈{1,2,4},β SRS is the scaling factor of SRS, (i.e., β SRS Indicates the ratio of the EPRE of the physical uplink shared channel (PUSCH) to the EPRE of the SRS), Indicates the frequency domain subcarrier mapping relationship, K TC Indicates the comb tooth size (also known as comb tooth density), K TC∈{2,4,8}, can be configured through the high-level parameter "transmissionComb", Indicates the pth k The frequency domain starting position of the port; l0 represents the The starting symbol of the SRS in the given time domain resource, l offset ∈{0,1,…,13} represents the number of symbols offset from the end of the time slot; Indicates the length of the SRS sequence, Indicates the time domain occupied by SRS consecutive OFDM symbols, Given by the field "nrofSymbols" contained in the high-level parameter "resourceMapping"; "otherwise" means otherwise, that is, at least one of k' or l' is not in the value range given by the formula (that is, )Inside.

[0304] In this embodiment, the transmitting device may perform a phase shift in the time domain and / or frequency domain on the values ​​mapped to different REs according to the method provided in the above method 600. For example, after the phase shift in the frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) may satisfy: After phase shift in the time domain, the reference signal between two different ports (such as the k1th port and the k2th port) satisfies: After phase shifting in the time domain and frequency domain, the reference signal between two different ports (for example, the k1th port and the k2th port) satisfies:

[0305] in, Indicates the phase offset in the frequency domain between the reference signal of the k1th port and the reference signal of the k2th port, Indicates the phase offset in the time domain between the reference signal of the k1th port and the reference signal of the k2th port. and The value of is related to one or more of the following parameters: the number of SRS ports supported, the number of subcarriers allocated to SRS, and the number of SRS symbols.

[0306] In the formulas of the mapping relationships between the multiple different reference signal sequences and the time-frequency resources exemplified above, a more detailed description of the parameters can be found in the relevant description in 3GPP TS38.211, which will not be repeated here.

[0307] In addition, the present application does not limit the types of reference signal sequences. The several sequences given above are only examples and should not constitute any limitation to the present application.

[0308] The method provided by the embodiment of the present application is described in detail above with reference to the accompanying drawings. Below, the device provided by the embodiment of the present application is described in detail with reference to the accompanying drawings.

[0309] Figures 18 to 21 are schematic block diagrams of possible devices provided by embodiments of the present application. These devices can be used to implement the functions of the sending device or receiving device in the above-mentioned method embodiments, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiments. In an embodiment of the present application, the device may be a sending device or receiving device in the method embodiments shown in Figures 6, 12, 13 or 16, or a component (such as a chip, a chip system, a processor, etc.) configured in the sending device or the receiving device, or a logic module or software that can implement some or all of the functions of the sending device or the receiving device.

[0310] A device provided in this application is shown in FIG18 , where the device 1800 includes a transceiver unit 1810 and a processing unit 1820 .

[0311] In one possible design, apparatus 1800 may be an apparatus for transmitting a reference signal, and the apparatus 1800 is configured to implement the functionality of the transmitting device in the method embodiment shown in FIG6 or FIG13. For example, the apparatus 1800 may correspond to the transmitting device in FIG6 or FIG13.

[0312] Exemplarily, the processing unit 1820 is used to generate a reference signal sequence for K ports, where the reference signal sequence for the K ports is used for communication and / or perception, and K is a positive integer greater than 1; the processing unit 1820 is also used to map the reference signal sequence for the K ports to resources to obtain reference signals for the K ports; the reference signals for the K ports occupy the same time-frequency resources, and the resources occupied in at least one domain in the delay domain or the Doppler domain are not exactly the same; the transceiver unit 1810 is used to send the reference signals for the K ports.

[0313] Optionally, the reference signals of the K ports are mapped to different resources in the delay domain, and the phases of the reference signals of the K ports in the frequency domain are different from each other.

[0314] Optionally, the phase offset in the frequency domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and k1 and k2 are respectively integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0315] Optionally, the reference signal of the k1-th port and the reference signal of the k2-th port satisfy:

[0316] Among them, the Indicates the phase offset in the frequency domain of the reference signal of the k1th port relative to the reference signal of the k2th port; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and A is a preconfigured value.

[0317] Optionally, A satisfies: A=M seq ;Should satisfy: The X represents the number of resource units RE occupied by the reference signals of the K ports in the frequency domain in a resource block RB, and the M seq Indicates the total number of REs occupied by the reference signals of the K ports in the frequency domain. The X and M seq All are positive integers.

[0318] Optionally, the satisfy:

[0319] Optionally, the A satisfies: A=K; satisfy:

[0320] Optionally, the transceiver unit 1810 is also used to send first information, which is used to indicate the phase offset in the frequency domain of the reference signals of other ports except the reference port in the reference signals of the K ports relative to the reference signal of the reference port, and the reference port is any one of the K ports.

[0321] Optionally, the reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

[0322] Optionally, the phase offset in the time domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and k1 and k2 are integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0323] Optionally, the reference signal of the k1-th port and the reference signal of the k2-th port satisfy:

[0324] Among them, the Indicates the phase offset in the time domain of the reference signal of the k1th port relative to the reference signal of the k2th port; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and B is a preconfigured value.

[0325] Optionally, B satisfies: B=N seq ;Should satisfy: Y represents the number of symbols occupied by the reference signals of the K ports in one RB, and N seq represents the total number of symbols occupied by the reference signals of the K ports, the Y and the N seq All are positive integers.

[0326] Optionally, the satisfy:

[0327] Optionally, B=K; satisfy:

[0328] Optionally, the transceiver unit 1810 is further used to send second information, where the second information is used to indicate the phase offset in the time domain of other ports except the reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one of the K ports.

[0329] Optionally, the reference signal sequence is: a demodulation reference signal sequence, a channel state information reference signal sequence, a positioning reference signal sequence, or a sounding reference signal sequence.

[0330] Optionally, the reference signal of each of the K ports occupies a continuous time domain resource, which carries a repeatedly transmitted reference signal sequence. The reference signal sequence transmitted each time is continuous in the time domain resource, and the reference signal sequences transmitted twice adjacently are continuous in the time domain resource.

[0331] Optionally, the phase of the reference signal of the kth port among the K ports in the time domain resource of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time are equal to The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of points in the Fast Fourier Transform (FFT).

[0332] In one possible design, the apparatus 1800 may be an apparatus for receiving a reference signal, and the apparatus 1800 is configured to implement the functions of the receiving device in the method embodiment shown in FIG12 or FIG16 . For example, the apparatus 1800 may correspond to the receiving device in FIG12 or FIG16 .

[0333] Exemplarily, the transceiver unit 1810 is used to receive reference signals of K ports, where K is a positive integer greater than 1; the reference signals of the K ports occupy the same time-frequency resources; the processing unit 1820 is used to convert the reference signals of the K ports from the time-frequency domain to the delay-Doppler domain, and the resources occupied by the reference signals of the K ports in at least one domain in the delay domain or the Doppler domain are not completely the same; the processing unit 1820 is also used to extract the reference signal sequence of the K ports from the delay-Doppler domain, and the reference signal sequence of the K ports is used for communication and / or perception.

[0334] Optionally, the reference signals of the K ports are mapped to different resources in the delay domain, and the phases of the reference signals of the K ports in the frequency domain are different from each other.

[0335] Optionally, the phase offset in the frequency domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and k1 and k2 are respectively integer values ​​between 0 and K-1, and k1 is not equal to k2.

[0336] Optionally, the reference signal of the k1-th port and the reference signal of the k2-th port satisfy:

[0337] Among them, the Indicates the phase offset in the frequency domain of the reference signal of the k1th port relative to the reference signal of the k2th port; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and A is a preconfigured value.

[0338] Optionally, A satisfies: A=M seq ;Should satisfy: The X represents the number of resource units RE occupied by the reference signals of the K ports in the frequency domain in a resource block RB, and the M seq Indicates the total number of REs occupied by the reference signals of the K ports in the frequency domain. The X and M seq All are positive integers.

[0339] Optionally, the satisfy:

[0340] Optionally, the A satisfies: A=K; satisfy:

[0341] Optionally, the transceiver unit 1810 is also used to receive first information, which is used to indicate the phase offset in the frequency domain of other ports except the reference port in the reference signals of the K ports relative to the reference port, and the reference port is any one of the K ports.

[0342] Optionally, the reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

[0343] Optionally, the reference signal of the k1-th port and the reference signal of the k2-th port satisfy:

[0344] Among them, the Indicates the phase offset in the time domain of the reference signal of the k1th port relative to the reference signal of the k2th port; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and B is a preconfigured value.

[0345] Optionally, B satisfies: B=N seq ;Should satisfy: Y represents the number of symbols occupied by the reference signals of the K ports in one RB, and N seq represents the total number of symbols occupied by the reference signals of the K ports, the Y and the N seq All are positive integers.

[0346] Optionally, the satisfy:

[0347] Optionally, B=K; satisfy:

[0348] Optionally, second information is received, where the second information is used to indicate a phase offset in the time domain of other ports except a reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one port among the K ports.

[0349] Optionally, the reference signal sequence is: a demodulation reference signal sequence, a channel state information reference signal sequence, a positioning reference signal sequence, or a sounding reference signal sequence.

[0350] Optionally, the reference signal of each of the K ports occupies a continuous time domain resource, which carries a repeatedly transmitted reference signal sequence. The reference signal sequence transmitted each time is continuous in the time domain resource, and the reference signal sequences transmitted twice adjacently are continuous in the time domain resource segment.

[0351] Optionally, the phase of the reference signal of the kth port among the K ports in the time domain resource of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time are equal to The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of points in the Fast Fourier Transform (FFT).

[0352] One possible design is that the apparatus 1800 is used to implement the functions of the sending device in the method embodiment shown in Figure 6 or Figure 13. For example, the apparatus 1800 may correspond to the sending device in Figure 6 or Figure 13.

[0353] Exemplarily, the processing unit 1820 is used to generate a reference signal sequence, which is used for perception and / or communication; the transceiver unit 1810 is used to repeatedly send the reference signal sequence on a continuous time domain resource, in which the reference signal sequence sent each time is continuous in the time domain resource, and the reference signal sequences sent twice adjacently are continuous in the time domain resource.

[0354] Optionally, in the time domain resource, the phase of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time are different by a factor of The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of points in the Fast Fourier Transform (FFT).

[0355] One possible design is that the apparatus 1800 is used to implement the functions of the receiving device in the method embodiment shown in Figure 12 or Figure 16. For example, the apparatus 1800 may correspond to the receiving device in Figure 12 or Figure 16.

[0356] Exemplarily, the transceiver unit 1810 is used to receive a repeatedly transmitted reference signal sequence on a continuous time domain resource, in which the reference signal sequence transmitted each time is continuous in the time domain resource, and the reference signal sequences transmitted two adjacent times are continuous in the time domain resource; the processing unit 1820 is used to obtain the reference signal sequence based on the received repeatedly transmitted reference signal sequence.

[0357] Optionally, in the time domain resource, the phase of the reference signal sequence sent for the nth time and the phase of the reference signal sequence sent for the (n-1)th time are different by a factor of The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of points in the Fast Fourier Transform (FFT).

[0358] A more detailed description of the above-mentioned transceiver unit 1810 and the processing unit 1820 can be directly obtained by referring to the relevant description in any one of the embodiments shown in Figures 6, 12, 13 or 16, and will not be repeated here.

[0359] In one possible design, when apparatus 1800 is a transmitting device or a communication module within a transmitting device, or when apparatus 1800 is a receiving device or a communication module within a receiving device, the functions of processing unit 1820 may be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system-on-chip (SoC) chip or SIP chip containing a modem core. The functions of transceiver unit 1810 may be implemented by a transceiver circuit.

[0360] In one possible design, when the apparatus 1800 is a circuit or chip responsible for communication functions in a transmitting or receiving device, such as a modem chip or a system-on-chip (SoC) chip or SIP chip containing a modem core, the functions of the processing unit 1820 can be implemented by a circuit system including one or more processors or processor cores in the aforementioned chip. The functions of the transceiver unit 1810 can be implemented by an interface circuit or data transceiver circuit on the aforementioned chip.

[0361] It should also be understood that the transceiver unit in device 1800 may include a transmitting module but not a receiving module. Alternatively, transceiver unit 1810 may include a receiving module but not a transmitting module. The specific implementation depends on whether the above-mentioned solution executed by device 1800 includes both transmitting and receiving actions. The receiving module may be used to perform the receiving action in the above-mentioned solution, and the transmitting module may be used to perform the transmitting action in the above-mentioned solution.

[0362] It is understandable that the division of units in the above-mentioned device is merely a division of logical functions, and each function may correspond to a functional unit, or two or more functions may be integrated into one functional unit. In actual implementation, all or part of the units may be integrated into one physical entity, or distributed across different physical entities. In addition, the above-mentioned functional units may be implemented in the form of hardware, software, or a combination of hardware and software. Whether a function is executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0363] FIG19 is another schematic block diagram of an apparatus provided in an embodiment of the present application. As shown in FIG19 , apparatus 1900 includes one or more processors 1910. The processor 1910 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the apparatus (e.g., a vehicle or chip), execute software programs, and process data of the software programs.

[0364] Optionally, in one design, the processor 1910 may include a program (also referred to as code or instructions), which may be executed on the processor 1910 to cause the apparatus 1900 to perform the method performed by the sending device or the receiving device in the above method embodiment. In another possible design, the apparatus 1900 includes a circuit (not shown in FIG. 19 ) configured to implement the functions of the sending device or the receiving device in the above method embodiment.

[0365] Exemplarily, the processor 1910 may be used to execute computer programs or instructions in the memory to implement the steps performed by the sending device or the receiving device in the method embodiments shown in the embodiments shown in FIG. 6 , FIG. 12 , FIG. 13 or FIG. 16 .

[0366] Optionally, the device 1900 may include one or more memories 1920 on which programs (sometimes also referred to as codes or instructions) are stored. The programs can be run on the processor 1910, so that the device 1900 executes the method performed by the sending device or the receiving device in the above embodiments.

[0367] Optionally, data may be stored in the processor 1910 and / or the memory 1920. The processor and memory may be provided separately or integrated together.

[0368] Optionally, the apparatus 1900 may further include a communication interface 1930. The processor 1910 may also sometimes be referred to as a processing unit, which controls the apparatus (e.g., a transmitting device or a receiving device). The communication interface 1930 may also sometimes be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the apparatus. For example, the communication interface 1930 may be used to receive the first information.

[0369] Optionally, the apparatus 1900 further includes a communication interface 1930. The processor 1910 and the communication interface 1930 are coupled to each other. It is understood that the communication interface 1930 may be a transceiver or an input / output interface.

[0370] When the apparatus 1900 is used to implement the method shown in FIG6 , FIG12 , FIG13 , or FIG16 , the processor 1910 may be used to execute the functions of the processing unit 1820, and the communication interface 1930 may be used to execute the functions of the transceiver unit 1810. Whether the communication interface 1930 is used for sending or receiving may depend on whether the sending action or the receiving action is performed in the solution executed by the apparatus 1900.

[0371] When the apparatus 1900 is a chip implemented in a transmitting device, the chip implements the functions of the transmitting device in the above method embodiments. The chip of the transmitting device receives a signal from another module in the transmitting device (e.g., a radio frequency module or antenna). The signal may be sent from the receiving device to the transmitting device; or the chip of the transmitting device sends a signal to another module in the transmitting device (e.g., a radio frequency module or antenna). The signal may be sent from the transmitting device to the receiving device.

[0372] When the apparatus 1900 is a chip implemented in a receiving device, the chip implements the functions of the receiving device in the above method embodiments. The chip in the receiving device receives signals from other modules in the receiving device, which may be signals sent from a transmitting device to the receiving device; or the chip in the receiving device sends signals to other modules in the receiving device, which may be signals sent from the receiving device to the transmitting device.

[0373] It is understood that when apparatus 1900 is a transmitting device or a receiving device, communication interface 1930 may be a transceiver, specifically including a transmitter and a receiver, where the transmitter is used to transmit signals and the receiver is used to receive signals. When apparatus 1900 is a chip used in a transmitting device or a receiving device, communication interface 1930 may be an input / output circuit, where the input circuit can be used for receiving and the output interface can be used for transmitting.

[0374] Optionally, the device 1900 further includes a power supply circuit, which can be used to supply power to the device 1900 .

[0375] Figure 20 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. As shown in Figure 20, the terminal device 2000 can be applied to the system shown in Figures 1 to 4 to perform the functions of the sending device or receiving device in the method embodiments shown in Figures 6, 12, 13 or 16. As shown in the figure, the terminal device 2000 includes a processor 2001 and a transceiver 2002. Optionally, the terminal device 2000 also includes a memory 2003. The processor 2001, the transceiver 2002 and the memory 2003 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 2003 is used to store a computer program, and the processor 2001 is used to call and run the computer program from the memory 2003 to control the transceiver 2002 to send and receive signals. Optionally, the terminal device 2000 may also include an antenna 2004 for transmitting the uplink data or uplink control signaling output by the transceiver 2002 via a wireless signal.

[0376] The processor 2001 and the memory 2003 may be combined into a processing device, and the processor 2001 is configured to execute program code stored in the memory 2003 to implement the aforementioned functions. In a specific implementation, the memory 2003 may be integrated into the processor 2001 or independent of the processor 2001. The processor 2001 may correspond to the processing unit in FIG. 18 or the processor in FIG. 19 .

[0377] The transceiver 2002 may correspond to the transceiver unit in FIG18 or the communication interface in FIG19 . The transceiver 2002 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0378] It should be understood that the terminal device 2000 shown in Figure 20 is capable of implementing the various processes involving the sending device or receiving device in the method embodiments shown in Figures 6, 12, 13, or 16. The operations and / or functions of the various modules in the terminal device 2000 are respectively for implementing the corresponding processes in the above-mentioned method embodiments. For details, please refer to the description of the above-mentioned method embodiments. To avoid repetition, detailed descriptions are omitted here.

[0379] The processor 2001 can be used to execute the actions implemented within the transmitting device or receiving device described in the previous method embodiments, while the transceiver 2002 can be used to execute the actions of the transmitting device sending to or receiving from the receiving device described in the previous method embodiments. For details, please refer to the description of the previous method embodiments and will not be repeated here.

[0380] Optionally, the terminal device 2000 may further include a power supply 2005 for providing power to various devices or circuits in the terminal device.

[0381] In addition, in order to make the functions of the terminal device more complete, the terminal device 2000 can also include one or more of an input unit 2006, a display unit 2007, an audio circuit 2008, a camera 2009 and a sensor 2010, and the audio circuit can also include a speaker 2008a, a microphone 2008b, etc.

[0382] Figure 21 is a schematic diagram of the structure of a network device provided in an embodiment of the present application, for example, a schematic diagram of the structure of a base station. The base station 2100 can be applied to the system shown in Figures 1 to 4, and perform the functions of a sending device or a receiving device in the method embodiments shown in Figures 6, 12, 13 or 16. As shown in the figure, the base station 2100 may include one or more of the following: one or more (DU+RU) 2110, one or more CU 2120. CU 2120 can communicate with the next generation core network (NG core). The DU may include at least one antenna 2111, at least one radio frequency unit 2112, at least one processor 2113 and at least one memory 2114. The DU part is mainly used for transmitting and receiving radio frequency signals, converting radio frequency signals into baseband signals, and partial baseband processing. CU 2120 may include at least one processor 2122 and at least one memory 2121. Communication between CU 2120 and DU can be carried out through an interface. The control plane (CP) interface may be Fs-C, such as F1-C, and the user plane (UP) interface may be Fs-U, such as F1-U. The DU and RU may collaborate to implement physical (PHY) layer functions. A DU may be connected to one or more RUs. The functions of the DU and RU may be configured in various ways depending on the design. For example, the DU may be configured to implement baseband functions, and the RU may be configured to implement mid-radio functions. For another example, the DU may be configured to implement high-layer functions in the PHY layer, and the RU may be configured to implement low-layer functions and radio frequency functions in the PHY layer. The high-layer functions in the PHY layer may include a portion of the functions of the PHY layer that is closer to the medium access control (MAC) layer, and the low-layer functions in the PHY layer may include another portion of the functions of the PHY layer that is closer to the mid-radio side.

[0383] The CU 2120 is primarily used for baseband processing and base station control. The DU and CU 2120 may be physically located together or physically separated, i.e., a distributed base station. The CU 2120 is the control center of the base station and may correspond to the processing unit in FIG. 18 or the processor in FIG. 19 , and may also be referred to as a processing unit, primarily for performing baseband processing functions. For example, the CU 2120 may be used to control the base station to execute the operating procedures for the transmitting device or receiving device in the above-described method embodiment.

[0384] Specifically, baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the packet data convergence protocol (PDCP) layer and above are set in the CU, while the functions of the protocol layers below the PDCP, such as the radio link control (RLC) layer and the MAC layer, are set in the DU. For another example, the CU implements the functions of the RRC layer and the PDCP layer, while the DU implements the functions of the RLC layer, the MAC layer, and the PHY layer.

[0385] In addition, optionally, the base station 2100 may include one or more radio frequency units (RUs), one or more DUs, and one or more CUs. The DU may include at least one processor 2113 and at least one memory 2114, the RU may include at least one antenna 2111 and at least one radio frequency unit 2112, and the CU may include at least one processor 2122 and at least one memory 2121.

[0386] In one example, the CU 2120 may be composed of one or more single boards, and the multiple single boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 2121 and the processor 2122 may serve one or more single boards. That is, a memory and a processor may be separately set on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board. The DU may be composed of one or more single boards, and the multiple single boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 2114 and the processor 2113 may serve one or more single boards. That is, a memory and a processor may be separately set on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board.

[0387] It should be understood that base station 2100 shown in Figure 21 is capable of implementing the various processes involving the transmitting device or receiving device in the method embodiments shown in Figures 6, 12, 13, or 16. The operations and / or functions of the various modules in base station 2100 are respectively for implementing the corresponding processes in the aforementioned method embodiments. For details, please refer to the description of the aforementioned method embodiments; to avoid repetition, detailed descriptions are omitted here.

[0388] It should be understood that the base station 2100 shown in FIG21 is only one possible architecture of a network device and does not constitute any limitation to this application. The method provided in this application is applicable to network devices of other architectures. For example, network devices including CU, DU, and AAU. This application does not limit the specific architecture of the network device.

[0389] It should be understood that FIG21 is merely an example and not a limitation, and the network device may not rely on the structure shown in FIG21. For example, the network device may include an AAU, a CU, and / or a DU, or a BBU and an adaptive radio unit (ARU). This application is not limited to this.

[0390] The CU and / or DU described above can be used to perform the actions implemented within the transmitting device or receiving device described in the previous method embodiments, while the AAU can be used to perform the actions described in the previous method embodiments in which the transmitting device sends to or receives from the receiving device. For details, please refer to the description of the previous method embodiments and will not be repeated here.

[0391] It should be noted that the above method embodiments can be applied to or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by hardware integrated logic circuits in the processor or by software instructions.

[0392] The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0393] The steps of the method disclosed in the embodiments of this application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0394] The memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0395] The present application also provides a chip system, which includes at least one processor for supporting the functions of the sending device or receiving device involved in any of the above method embodiments, for example, sending, receiving or processing the information involved in the above method.

[0396] In one possible design, the chip system further includes a memory, which is used to store computer programs and data, and the memory is located inside or outside the processor.

[0397] The chip system can be composed of chips, or can include chips and other discrete devices.

[0398] The present application also provides a computer program product, which includes: a computer program. When the computer program is run, the method executed by the sending device in the embodiment shown in Figure 6, Figure 12, Figure 13 or Figure 16 is executed, or the method executed by the receiving device is executed.

[0399] The present application also provides a computer-readable storage medium storing a computer program. When the computer program is executed, the method executed by the sending device in the embodiment shown in Figure 6, Figure 12, Figure 13 or Figure 16 is executed, or the method executed by the receiving device is executed.

[0400] The present application also provides a communication system, which includes the aforementioned sending device and receiving device.

[0401] The methods provided in the above embodiments can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, they can be implemented in whole or in part in the form of a computer program product. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic disk), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0402] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0403] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0404] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0405] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0406] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0407] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

Claims

1. A method for sending a reference signal, characterized in that: include: Generate reference signal sequences for K ports, where the reference signal sequences for the K ports are used for communication and / or sensing, where K is a positive integer greater than 1; Mapping the reference signal sequences of the K ports onto resources to obtain reference signals of the K ports; the reference signals of the K ports occupy the same time-frequency resources, and the resources occupied in at least one of the delay domain or the Doppler domain are not completely the same; Send reference signals of the K ports.

2. The method according to claim 1, wherein The resources occupied by the reference signals of the K ports in the delay domain are not completely the same, and the phases of the reference signals of the K ports in the frequency domain are different from each other.

3. The method according to claim 2, wherein The method further comprises: Send first information, where the first information is used to indicate a phase offset in the frequency domain of reference signals of other ports except the reference port in the reference signals of the K ports relative to the reference signal of the reference port, where the reference port is any one port of the K ports.

4. The method according to claim 1, wherein The reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

5. The method according to claim 4, wherein The method further comprises: Second information is sent, where the second information is used to indicate a phase offset in the time domain of other ports except the reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one port among the K ports.

6. A method for receiving a reference signal, characterized in that: include: receiving reference signals of K ports, where K is a positive integer greater than 1, and the reference signals of the K ports occupy the same time-frequency resources; Converting the reference signals of the K ports from the time-frequency domain to the delay-Doppler domain, where the resources occupied by the reference signals of the K ports in at least one of the delay domain and the Doppler domain are not completely the same; The reference signal sequences of the K ports are extracted from the delay-Doppler domain, and the reference signal sequences of the K ports are used for communication and / or sensing.

7. The method according to claim 6, wherein The reference signals of the K ports are mapped to different resources in the delay domain, and the phases of the reference signals of the K ports in the frequency domain are different from each other.

8. The method according to claim 7, wherein The method further comprises: First information is received, where the first information is used to indicate phase offsets in the frequency domain of other ports except a reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one port among the K ports.

9. The method according to claim 6, wherein The reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

10. The method according to claim 9, wherein The method further comprises: Second information is received, where the second information is used to indicate a phase offset in a time domain of other ports except a reference port in the reference signals of the K ports relative to the reference port, where the reference port is any one port among the K ports.

11. The method according to any one of claims 1 to 3 and 6 to 8, characterized in that The phase offset in the frequency domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and k1 and k2 are integer values ​​between 0 and K-1, and k1 is not equal to k2.

12. The method according to claim 11, wherein The reference signal of the k1th port and the reference signal of the k2th port satisfy: Among them, the Represents the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the frequency domain; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and A is a preconfigured value.

13. The method according to claim 12, wherein: The A satisfies: A=M seq ; satisfy: The X represents the number of resource units RE occupied by the reference signals of the K ports in the frequency domain in a resource block RB, and the M seq represents the total number of REs occupied by the reference signals of the K ports in the frequency domain, the X and the M seq All are positive integers.

14. The method according to claim 13, wherein described satisfy:

15. The method according to claim 14, wherein The A satisfies: A=K; satisfy:

16. The method according to any one of claims 1, 4, 5, 6, 9 or 10, wherein: The reference signals of the K ports are mapped to different resources in the Doppler domain, and the phases of the reference signals of the K ports in the time domain are different from each other.

17. The method according to claim 16, wherein The phase offset in the time domain between the reference signal of the k1th port among the K ports and the reference signal of the k2th port among the K ports is related to k1-k2, and k1 and k2 are integer values ​​between 0 and K-1, and k1 is not equal to k2.

18. The method according to claim 17, wherein The reference signal of the k1th port and the reference signal of the k2th port satisfy: Among them, the represents the phase offset of the reference signal of the k1th port relative to the reference signal of the k2th port in the time domain; m represents the subcarrier index relative to the frequency domain reference point, n represents the symbol index relative to the time domain reference point, and B is a preconfigured value.

19. The method according to claim 18, wherein The B satisfies: B=N seq ; satisfy: The Y represents the number of symbols occupied by the reference signals of the K ports in one RB, and the N seq represents the total number of symbols occupied by the reference signals of the K ports, the Y and the N seq All are positive integers.

20. The method according to claim 19, wherein described satisfy:

21. The method according to claim 20, wherein B=K; satisfy:

22. The method according to any one of claims 1 to 21, characterized in that The reference signal of each of the K ports occupies a continuous time domain resource, and the time domain resource carries a repeatedly transmitted reference signal sequence. The reference signal sequence sent each time is continuous in the time domain resource, and the reference signal sequences sent twice adjacently are continuous in the time domain resource.

23. The method according to claim 22, wherein The difference between the phase of the reference signal sequence of the kth port among the K ports sent for the nth time in the time domain resource and the phase of the reference signal sequence sent for the (n-1)th time is The offset, L n Indicates the length of the cyclic prefix, M FFT Indicates the number of points in the Fast Fourier Transform (FFT).

24. The method according to any one of claims 1 to 23, characterized in that The reference signal sequence is: a demodulation reference signal sequence, a channel state information reference signal sequence, a positioning reference signal sequence or a sounding reference signal sequence.

25. A device for sending a reference signal, characterized in that: Comprising modules or units for performing the method of any one of claims 1 to 5, or any one of claims 11 to 15 when referring to any one of claims 1 to 3, or any one of claims 16 to 21 when referring to any one of claims 1, 4 or 5, or any one of claims 22 to 24 when referring to any one of claims 1 to 5.

26. A device for receiving a reference signal, characterized in that: Comprising modules or units for performing the method of any one of claims 6 to 10, or any one of claims 11 to 15 when referring to any one of claims 6 to 8, or any one of claims 16 to 21 when referring to any one of claims 6, 9 or 10, or any one of claims 22 to 24 when referring to any one of claims 6 to 10.

27. A device for sending a reference signal, characterized in that: The device comprises one or more processors configured to run computer programs or instructions so that the device performs the method of any one of claims 1 to 5, or any one of claims 11 to 15 when referring to any one of claims 1 to 3, or any one of claims 16 to 21 when referring to any one of claims 1, 4 or 5, or any one of claims 22 to 24 when referring to any one of claims 1 to 5.

28. The device according to claim 27, characterized in that The apparatus further comprises a memory for storing the computer program or instructions.

29. A device for receiving a reference signal, characterized in that: The device comprises one or more processors configured to run computer programs or instructions so that the device performs the method of any one of claims 6 to 10, or any one of claims 11 to 15 when referring to any one of claims 6 to 8, or any one of claims 16 to 21 when referring to any one of claims 6, 9 or 10, or any one of claims 22 to 24 when referring to any one of claims 6 to 10.

30. The device according to claim 29, characterized in that The apparatus further comprises a memory for storing the computer program or instructions.

31. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 24 is performed.

32. A computer program product, characterized in that A computer program is included which, when executed, causes the method according to any one of claims 1 to 24 to be performed.

33. A chip, characterized in that: comprising a processor configured to perform the method of any one of claims 1 to 24.

Images