Subcarrier determination method, apparatus, device, and storage medium

Abstract

The application discloses a subcarrier determination method and device, equipment and a storage medium, and relates to the field of mobile communication. The method comprises the following steps: a target device determines a plurality of subcarriers corresponding to each transmission device in at least two transmission devices in the same time domain position; wherein the interval between two adjacent subcarriers in the plurality of subcarriers is a target interval, and the transmission device is at least one of the following devices: a data receiving device and an echo receiving device. The reliability of the determined subcarrier for data transmission is ensured, there is an interval between adjacent subcarriers, the interference between subcarriers is prevented, and the accuracy of the parameters of the data receiving device determined based on the transmitted data is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mobile communication, and in particular to a subcarrier determination method and device, an apparatus, and a storage medium. BACKGROUND

[0002] With the rapid development of mobile communication technology, the distance and speed of individual communication devices can be measured by echo processing. For multiple communication devices, at the same time, how to allocate subcarriers to the multiple communication devices needs to be considered. SUMMARY

[0003] Embodiments of the present application provide a subcarrier determination method, device, apparatus, and storage medium, the interval between adjacent subcarriers is a target interval, ensuring the reliability of the determined subcarriers for data transmission. The technical solution is as follows:

[0004] According to an aspect of the present application, a subcarrier determination method is provided, the method is performed by a target device, and the method comprises:

[0005] determining a plurality of subcarriers corresponding to the same time domain position of each data receiving device in at least two data receiving devices;

[0006] wherein the interval between two adjacent subcarriers in the plurality of subcarriers is a target interval, and the transmission device is at least one of the following devices: a data receiving device, an echo receiving device.

[0007] According to an aspect of the present application, a subcarrier determination device is provided, the device comprises:

[0008] a determination module configured to determine a plurality of subcarriers corresponding to the same time domain position of each transmission device in at least two transmission devices;

[0009] wherein the interval between two adjacent subcarriers in the plurality of subcarriers is a target interval, and the transmission device is at least one of the following devices: a data receiving device, an echo receiving device.

[0010] According to an aspect of the present application, a target device is provided, the target device comprises: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the subcarrier determination method of the above aspect.

[0011] According to an aspect of the present application, a computer readable storage medium is provided, the readable storage medium stores executable program code, the executable program code is loaded and executed by the processor to implement the subcarrier determination method of the above aspect.

[0012] According to an aspect of the present application, a chip is provided, which comprises programmable logic circuit and / or program instructions, and when the chip is running on a target device, is used to implement the subcarrier determination method according to the above aspect.

[0013] According to an aspect of the present application, a computer program product is provided, which when executed by a processor of a target device, is used to implement the subcarrier determination method according to the above aspect.

[0014] The subcarrier determination method provided by the embodiments of the present application ensures the reliability of the determined subcarriers used for data transmission, and prevents the interference between the subcarriers, and ensures the accuracy of the parameters of the data receiving device determined based on the transmitted data. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0016] Figure 1 A block diagram of a communication system provided by an example embodiment of the present application is shown;

[0017] Figure 2 A schematic diagram of signal processing provided by an example embodiment of the present application is shown;

[0018] Figure 3 A flowchart of a subcarrier determination method provided by an example embodiment of the present application is shown;

[0019] Figure 4 A flowchart of a subcarrier determination method provided by an example embodiment of the present application is shown;

[0020] Figure 5 A flowchart of a subcarrier determination method provided by an example embodiment of the present application is shown;

[0021] Figure 6 A flowchart of a subcarrier determination method provided by an example embodiment of the present application is shown;

[0022] Figure 7 A flowchart of a subcarrier determination method provided by an example embodiment of the present application is shown;

[0023] Figure 8A flow chart of a subcarrier determination method is shown according to an example embodiment of the present application.

[0024] Figure 9 A diagram of distance and velocity measurement is shown according to an example embodiment of the present application.

[0025] Figure 10 A diagram of distance and velocity measurement is shown according to an example embodiment of the present application.

[0026] Figure 11 A block diagram of a subcarrier determination apparatus is shown according to an example embodiment of the present application.

[0027] Figure 12 A block diagram of a subcarrier determination apparatus is shown according to an example embodiment of the present application.

[0028] Figure 13 A structural diagram of a communication device is shown according to an example embodiment of the present application. DETAILED DESCRIPTION

[0029] For the purpose of clarity, technical solutions, and advantages of the present application, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0030] The example embodiments will be described in detail herein with reference to the accompanying drawings. The following description is presented for purposes of illustration and description, and is not intended to limit the application, as understood by persons of ordinary skill in the art. The description, together with the drawings, serves to explain example embodiments of the present application. It should be noted that the example embodiments described herein are not intended to limit the scope of the present application. Rather, these example embodiments are intended to explain the principles of the present application and its best mode of practice.

[0031] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or", as used herein, refer to and encompass any and all possible combinations of one or more of the associated listed items.

[0032] It should be understood that although the terms first, second, third, etc. can be used herein to describe various information, these terms are not intended to denote a particular order or hierarchy. These terms are used only to distinguish one from another. For example, a first information can be termed a second information, and similarly, a second information can be termed a first information, without departing from the scope of the present application. The words "if' as used herein can be interpreted as meaning "when" or "upon" or "in response to determining", depending on the context.

[0033] The application scenario of the present application is described as follows:

[0034] Figure 1 A block diagram of a communication system provided by an example embodiment of the present application is shown, which can include a terminal 10 and a network device 20.

[0035] The number of terminals 10 is usually multiple, and one or more terminals 10 can be distributed in a cell managed by each network device 20. The terminal 10 can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, and various forms of user equipment (UE), mobile stations (MS), etc. For convenience of description, the above-mentioned devices are collectively referred to as terminals in the embodiments of the present application.

[0036] The access network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10. The access network device 20 can include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with access network device functions may be different, for example, in the 5G NR system, it is called gNodeB or gNB. With the evolution of communication technology, the name of “access network device” may change. For convenience of description, the above-mentioned devices providing wireless communication functions for the terminal 10 are collectively referred to as access network devices in the embodiments of the present application. The access network device 20 and the terminal 10 can establish a connection through the air interface, so as to communicate through the connection, including the interaction of signaling and data. The number of access network devices 20 can be multiple, and two adjacent access network devices 20 can also communicate through wired or wireless means. The terminal 10 can switch between different access network devices 20, that is, establish a connection with different access network devices 20.

[0037] The “5G NR system” in the embodiments of the present application can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applicable to the 5G NR system, and can also be applicable to the subsequent evolution system of the 5G NR system.

[0038] With the development of mobile communication technology, a communication and sensing integrated technology is proposed, which is realized by a communication system and a radar system. The sensing and detection can be realized by the communication and sensing integrated technology to obtain the moving speed and / or distance of a data receiving end. In the communication and sensing integrated technology, a data sending device, a data receiving device and a back wave receiving device are included. Before the data sending device, the data receiving device and the back wave receiving device interact, the data sending device, the data receiving device and the back wave receiving device can first determine a plurality of subcarriers corresponding to the same time domain position of each data receiving device and back wave receiving device. For the convenience of description, the device for determining the subcarriers is uniformly described as a target device, and the data receiving device and the back wave receiving device are uniformly described as a transmission device.

[0039] In the embodiment of the application, after the data sending device, the data receiving device and the back wave receiving device determine the subcarriers, the data sending device can transmit data based on the subcarriers. The back wave receiving device can receive the information transmitted by the data sending device, and the data receiving device not only receives the signal but also reflects the signal. The back wave receiving device receives the signal reflected by the data receiving device, and the back wave receiving device can also receive the signal transmitted by the data sending device. Then, the moving speed and / or distance of the data receiving device are determined according to the signal transmitted by the data sending device and the signal reflected by the data receiving device.

[0040] For example, referring to Figure 2 The communication and radar integrated system architecture transmits bit data, performs serial-parallel conversion and symbol modulation on the bit data, transmits the modulated signal to a radar processor, performs fast inverse Fourier transform on the modulated signal, adds a cyclic prefix, performs serial-parallel conversion on the converted signal, converts the converted signal from a digital signal to an analog signal, transmits the converted signal to a moving target device, the target device reflects the converted signal, the receiving device converts the reflected signal from an analog signal to a digital signal, removes the cyclic prefix from the converted signal, performs serial-parallel conversion on the converted signal, performs fast Fourier transform on the converted signal, and performs parallel-serial conversion on the transformed signal. The bit data is obtained after demodulation. The radar processor can determine the moving speed and / or distance of the target device according to the two received signals.

[0041] In some embodiments, the terminal and the access network device described above can be the data sending device and the data receiving device in the communication and sensing integrated technology, and the radar processor is the back wave receiving device. That is, the data sending device transmits bit data, the radar processor and the data receiving device both receive the signal processed by the data sending device on the bit data, and the data receiving device also reflects the signal transmitted by the data sending device. The radar processor and the data sending device can also receive the signal reflected by the data receiving device.

[0042] It should be noted that the data sending device can send data to multiple data receiving devices, and different data receiving devices receive data sent by the data sending device on different subcarriers, so that the data sending device, the data receiving device and the echo receiving device all need to determine the subcarrier of each data receiving device, and then receive the data sent by the data sending device based on the subcarrier of each data receiving device.

[0043] Next, the signal processing of the communication radar integrated system of the present application is described: based on the OFDM (Orthogonal Frequency Division Multiplexing) communication radar integrated system, after the data sending device scatters and reflects the signal, the data receiving device transmits the received signal to the communication processing end and the radar processing end respectively. The OFDM time domain transmission signal is represented as

[0044]

[0045] Wherein, S Tx () is the OFDM frequency domain symbol, that is, the Fourier transform of s(t), N frame is the total number of symbols of a frame of OFDM signals, N c is the number of subcarriers, μ = 0,...,N frame -1 is the OFDM symbol index, n = 0,...,N c -1 is the subcarrier index, f n represents the corresponding subcarrier frequency, T OFDM = T + T CP is the OFDM symbol period, T is the OFDM basic symbol period, T CP is the cyclic prefix time, and rect() is the rectangular window function.

[0046] The communication radar integrated system can communicate and detect the target device in the environment, and the received signal has Doppler frequency shift, and its expression is:

[0047] f D,radar = 2v rel / λ = 2v rel f c / c

[0048] Where λ is the wavelength, f c is the carrier frequency, c is the speed of light, and λ = c / f c .

[0049] When the distance of the OFDM signal is R, the Doppler shift caused by the correlation motion is f d , and the received signal of the target reflection is:

[0050]

[0051] The received modulated symbol is obtained from the transmitted signal and the Doppler shift as:

[0052]

[0053] For an object with a distance R from the integrated communication and radar system, a linear phase shift will be generated between the sub-carrier data of all reflected OFDM symbols. Assuming the object is stationary, for the same OFDM symbol, i.e. the same time point, the distance information R is contained in the linear phase shift between the modulated symbols on the frequency axis. The Doppler processing is similar to the distance processing. With a relative velocity v rel The Doppler frequency of the echo signal reflected by the moving target device is twice the Doppler frequency of the communication signal with the same relative velocity. For the same OFDM sub-carrier, i.e. the same frequency point, the relative velocity information v rel is contained in the linear phase shift between the modulated symbols on the time axis.

[0054] Figure 3 A flow chart of a sub-carrier determination method provided by an example embodiment of the present application is shown. The example can be applied to a target device as shown in Figure 2 The method of the present application is described below with the target device as the data transmitting device as an example. The method includes at least part of the following content:

[0055] Step 301: The data transmitting device determines a plurality of sub-carriers corresponding to each of the at least two transmission devices at the same time domain position.

[0056] The sub-carriers are used for data transmission, the interval between adjacent sub-carriers in the plurality of sub-carriers is a target interval, and the transmission device is at least one of a data receiving device and an echo receiving device. In the embodiment of the present disclosure, the plurality refers to any number greater than one, i.e. the plurality is greater than or equal to 2.

[0057] In the embodiment of the present application, the data transmitting device can transmit data to the at least two transmission devices, so as to measure the moving speed and / or distance of each data receiving device based on the transmitted data. For each transmission device, the transmission device corresponds to a plurality of sub-carriers at the same time domain position. Therefore, the data transmitting device needs to determine the plurality of sub-carriers corresponding to each transmission device at the same time domain position, and the interval between adjacent sub-carriers in the plurality of sub-carriers is a target interval. The data transmitting device can perform data transmission based on the determined plurality of sub-carriers.

[0058] It should be noted that the embodiment of the present application is only taken as an example of the target device as the data sending device. In another embodiment, the target device can also be a data receiving device, that is, the data receiving device determines the plurality of subcarriers corresponding to each of the at least two transmission devices at the same time domain position.

[0059] In the embodiment of the present application, the transmission device corresponds to a plurality of subcarriers at the same time domain position, and the data sending device transmits data according to the plurality of subcarriers. The data receiving device also needs to determine the plurality of subcarriers corresponding to the same time domain position, and the interval between adjacent subcarriers in the plurality of subcarriers is the target interval.

[0060] In another embodiment, the target device can also be a back echo receiving device, that is, the back echo receiving device determines the plurality of subcarriers corresponding to each of the at least two transmission devices at the same time domain position.

[0061] In the embodiment of the present application, the back echo receiving device corresponds to a plurality of subcarriers at the same time domain position, and the data sending device transmits data according to the plurality of subcarriers. Therefore, in order to be able to receive the data sent by the data sending device and the data reflected by the data receiving device, the back echo receiving device also needs to determine the plurality of subcarriers corresponding to the same time domain position, and the interval between adjacent subcarriers in the plurality of subcarriers is the target interval.

[0062] The embodiment of the present application provides a subcarrier determination manner. In the plurality of subcarriers determined at the same time domain position, the interval between adjacent subcarriers is the target interval, which ensures the reliability of the determined subcarriers used for data transmission, and there is an interval between adjacent subcarriers, which prevents interference between subcarriers and ensures the accuracy of determining the parameters of the data receiving device based on the transmitted data.

[0063] Figure 3 The embodiment shown illustrates the determined subcarriers, and for how to determine the subcarriers, the distribution of the subcarriers can be determined according to the subcarrier allocation manner. The following still takes the target device as the data sending device as an example for description:

[0064] The first kind: determining the subcarriers according to the subcarrier allocation manner sent by the access network device, for example, referring to Figure 4 The method comprises the following steps:

[0065] Step 401: The data sending device receives the subcarrier allocation manner sent by the access network device, and the subcarrier allocation manner indicates the target interval of the transmission device.

[0066] In the embodiment of the present application, the access network device can send a subcarrier allocation mode to each device, where the subcarrier allocation mode indicates that the subcarriers corresponding to the transmission device are distributed according to a target interval at the same time domain position. Then, the data sending device receives the subcarrier allocation mode sent by the access network device, and determines the allocation of the subcarriers according to the subcarrier allocation mode.

[0067] In the embodiment of the present application, the subcarriers distributed according to the target interval at the same time domain position refer to a plurality of equally-interval-distributed subcarriers at the same time domain position, that is, the distance between two adjacent subcarriers is the target interval.

[0068] In some embodiments, the access network device sends configuration information, where the configuration information includes the subcarrier allocation mode.

[0069] In some embodiments, the access network device can send a plurality of subcarrier allocation modes to the data sending device, and the data sending device can receive the plurality of subcarrier allocation modes.

[0070] In step 402, the data sending device determines a plurality of subcarriers corresponding to each transmission device at the same time domain position according to the subcarrier allocation mode, where the plurality of subcarriers are equally-interval-distributed, and the interval is the target interval.

[0071] In the embodiment of the present application, after the data sending device receives the subcarrier allocation mode sent by the access network device, the data sending device can determine that the plurality of subcarriers corresponding to each transmission device at the same time domain position are equally-interval-distributed according to the target interval according to the subcarrier allocation mode.

[0072] In some embodiments, the subcarrier allocation mode is carried in DCI (Downlink Control Information, downlink control information) signaling, or the subcarrier allocation mode is carried in MAC-CE (Medium Access Control-Control Element, medium access control-control element) signaling, or the subcarrier allocation mode is carried in RRC (Radio Resource Control, radio resource control) signaling.

[0073] In some embodiments, the access network device indicates the subcarrier allocation mode through semi-static signaling. In the embodiment of the present application, the access network device determines the subcarrier allocation mode indicated by the signaling through the signaling. The signaling is RRC signaling.

[0074] In another embodiment, the access network device indicates the subcarrier allocation mode through dynamic information. In the embodiment of the present application, the access network device indicates the subcarrier allocation mode through MAC-CE signaling or DCI signaling.

[0075] It should be noted that the embodiment of the present application is only described by taking the subcarrier allocation manner indicated by the access network device as an example. In another embodiment, the data sending device receives the plurality of subcarrier allocation manners sent by the access network device, determines the used subcarrier allocation manner from the plurality of subcarrier allocation manners, and then determines the distribution of each data receiving device according to the used subcarrier allocation manner determined by itself.

[0076] The method provided by the embodiment of the present application can determine the subcarrier distribution of each data receiving device according to the subcarrier allocation manner sent by the access network device, ensure the reliability of the subcarriers determined by the data sending device for data transmission, and ensure the accuracy of the parameters of the data receiving device determined based on the transmitted data, because there is a gap between the adjacent subcarriers to prevent interference between the subcarriers.

[0077] Secondly, the subcarriers are distributed according to the target interval at the same time domain position according to the communication protocol, and the data sending device determines the subcarriers according to the communication protocol, for example, referring to Figure 5 The method comprises the following steps.

[0078] Step 501: The data sending device determines the subcarrier allocation manner of the transmission device according to the communication protocol.

[0079] In the embodiment of the present application, the subcarrier allocation manner indicates that the subcarriers corresponding to the transmission device are distributed according to the target interval at the same time domain position, and the data sending device receives the subcarrier allocation manner sent by the access network device to determine the allocation of the subcarriers according to the subcarrier allocation manner.

[0080] Step 502: The data sending device determines that the interval between two adjacent subcarriers in the plurality of subcarriers corresponding to each data receiving device at the same time domain position is the target interval according to the subcarrier allocation manner.

[0081] In the embodiment of the present application, the subcarrier allocation manner indicates that the subcarriers corresponding to the transmission device are distributed according to the target interval at the same time domain position, and the data sending device receives the subcarrier allocation manner sent by the access network device to determine the allocation of the subcarriers according to the subcarrier allocation manner.

[0082] In some embodiments, the communication protocol stipulates the starting position of each subcarrier in the plurality of subcarriers corresponding to each transmission device and the target interval, and thus the plurality of subcarriers corresponding to each transmission device are determined according to the starting position of the subcarriers corresponding to each transmission device and the target interval.

[0083] The method provided in the embodiments of the present application can determine the subcarrier distribution of each transmission device according to the subcarrier allocation mode agreed in the communication protocol, ensure the reliability of the subcarriers determined by the data sending device for data transmission, and prevent interference between the subcarriers by providing a gap between adjacent subcarriers, thereby ensuring the accuracy of the parameters of the data receiving device determined based on the transmitted data.

[0084] The third: determining the subcarriers according to the subcarrier allocation mode sent by the core network device, for example, see Figure 6 The method comprises the following steps.

[0085] Step 601: The data sending device receives the subcarrier allocation mode sent by the core network device, and the subcarrier allocation mode indicates the target interval of the transmission device.

[0086] In the embodiments of the present disclosure, if the data sending device is directly connected to the core network device, the core network device can directly send the subcarrier allocation mode to the data sending device; if the data sending device is not directly connected to the core network device, the core network device can send the subcarrier allocation mode to the data sending device through any other appropriate device. In the embodiments of the present disclosure, these modes are collectively referred to as: the data sending device receives the subcarrier allocation mode sent by the core network device.

[0087] In the embodiments of the present application, the core network device can directly or indirectly (through other devices) send the subcarrier allocation mode to each device, and the subcarrier allocation mode indicates that the subcarriers are distributed according to the target interval at the same time domain position. The data sending device receives the subcarrier allocation mode sent by the core network device, and determines the allocation of the subcarriers through the subcarrier allocation mode.

[0088] In some embodiments, the core network device sends configuration information, and the configuration information includes the subcarrier allocation mode.

[0089] In some embodiments, the core network device can send multiple subcarrier allocation modes to the data sending device, and the data sending device can receive multiple subcarrier allocation modes.

[0090] Step 602: The data sending device determines the multiple subcarriers corresponding to each transmission device at the same time domain position according to the subcarrier allocation mode. The multiple subcarriers are distributed at equal intervals, and the interval is the target interval.

[0091] In the embodiments of the present application, after the data sending device receives the subcarrier allocation mode sent by the core network device, the data sending device can determine that the multiple subcarriers corresponding to each transmission device at the same time domain position are distributed according to the target interval according to the subcarrier allocation mode.

[0092] In some embodiments, the subcarrier allocation manner is carried in DCI signaling, or the subcarrier allocation manner is carried in MAC-CE signaling, or the subcarrier allocation manner is carried in RRC signaling.

[0093] In some embodiments, the core network device indicates the subcarrier allocation manner through semi-static signaling. In the embodiments of the present application, the core network device determines the subcarrier allocation manner indicated by the signaling sent by the core network device. The signaling is RRC signaling.

[0094] In some other embodiments, the core network device indicates the subcarrier allocation manner through dynamic information. In the embodiments of the present application, the core network device indicates the subcarrier allocation manner through MAC-CE signaling or DCI signaling.

[0095] The method provided by the embodiments of the present application can ensure the reliability of the subcarriers determined by the data sending device for data transmission, and there is an interval between adjacent subcarriers to prevent interference between the subcarriers, thereby ensuring the accuracy of the parameters of the data receiving device determined based on the transmitted data.

[0096] It should be noted that the embodiments of the present application are only described by taking the target device as the data sending device as an example. In another embodiment, the target device can also be a data receiving device, and the manner in which the data receiving device determines the subcarriers is similar to the manner in which the data sending device determines the subcarriers, which will not be described here. In addition, in another embodiment, the target device can also be a back echo receiving device, and the manner in which the back echo receiving device determines the subcarriers is similar to the manner in which the data sending device determines the subcarriers, which will not be described here. That is, steps 401-402 in the first manner described above can be performed by the data receiving device or the back echo receiving device. Steps 501-502 in the second manner described above can be performed by the data receiving device or the back echo receiving device. Steps 601-602 in the second manner described above can be performed by the data receiving device or the back echo receiving device.

[0097] In Figure 3 On the basis of the embodiments shown in the figure, the data receiving device needs to determine the distribution of the subcarriers according to the subcarrier allocation manner sent by the data sending device, referring to Figure 7 The method comprises the following steps:

[0098] Step 701: The data sending device sends a subcarrier allocation manner to the data receiving device.

[0099] Step 702: The data receiving device receives the subcarrier allocation manner sent by the data sending device.

[0100] Step 703: The data receiving device determines, according to the subcarrier allocation mode, that the interval between two adjacent subcarriers in the multiple subcarriers corresponding to the same time domain position of each transmission device is the target interval.

[0101] In the embodiments of the present application, after the data sending device determines the subcarrier allocation mode, the data sending device can send the subcarrier allocation mode to the data receiving device, and the data receiving device can determine the distribution of the multiple subcarriers corresponding to the same time domain position according to the subcarrier allocation mode.

[0102] That is, in a possible implementation manner:

[0103] The data sending device sends the subcarrier allocation mode to the data receiving device, where the subcarrier allocation mode is used to instruct the data receiving device to determine, according to the subcarrier allocation mode, that the interval between two adjacent subcarriers in the multiple subcarriers corresponding to the same time domain position of each transmission device is the target interval.

[0104] That is, in another possible implementation manner:

[0105] The data receiving device receives the subcarrier allocation mode sent by the data sending device, to determine, according to the subcarrier allocation mode, that the interval between two adjacent subcarriers in the multiple subcarriers corresponding to the same time domain position of each transmission device is the target interval.

[0106] The method provided by the embodiments of the present application can enable the data receiving device to determine the distribution of the subcarriers according to the subcarrier allocation mode sent by the data sending device, and then perform data transmission based on the determined subcarriers, thereby ensuring the reliability of the subcarriers determined by the data receiving device for data transmission, and ensuring the accuracy of the parameters of the data receiving device determined based on the transmitted data, because there is an interval between the adjacent subcarriers, preventing interference between the subcarriers.

[0107] It should be noted that the embodiments of the present application are only described by taking the data sending device sending the subcarrier allocation mode to the data receiving device as an example.

[0108] In Figure 3 On the basis of the embodiments shown in the figure, the echo receiving device needs to determine the distribution of the subcarriers according to the subcarrier allocation mode sent by the data sending device, referring to Figure 8 The method comprises the following steps:

[0109] Step 801: The data sending device sends the subcarrier allocation mode to the echo receiving device.

[0110] Step 802: The echo receiving device receives the subcarrier allocation mode sent by the data sending device.

[0111] In step 803, the echo receiving device determines, according to the subcarrier allocation mode, that the interval between two adjacent subcarriers in the multiple subcarriers corresponding to the same time domain position of each transmission device is the target interval.

[0112] In the embodiments of the present application, after the data sending device determines the subcarrier allocation mode, the data sending device can send the subcarrier allocation mode to the echo receiving device, and the echo receiving device can determine the distribution of the multiple subcarriers corresponding to the same time domain position according to the subcarrier allocation mode.

[0113] That is, in a possible implementation manner:

[0114] The data sending device sends the subcarrier allocation mode to the echo receiving device, where the subcarrier allocation mode is used to instruct the echo receiving device to determine, according to the subcarrier allocation mode, that the interval between two adjacent subcarriers in the multiple subcarriers corresponding to the same time domain position of each transmission device is the target interval.

[0115] That is, in another possible implementation manner:

[0116] The echo receiving device receives the subcarrier allocation mode sent by the data sending device, to determine, according to the subcarrier allocation mode, that the interval between two adjacent subcarriers in the multiple subcarriers corresponding to the same time domain position of each transmission device is the target interval.

[0117] The method provided by the embodiments of the present application can enable the echo receiving device to determine the distribution of the subcarriers according to the subcarrier allocation mode sent by the data sending device, and then perform data transmission based on the determined subcarriers, thereby ensuring the reliability of the subcarriers determined by the echo receiving device for data transmission, and ensuring the accuracy of the parameters of the echo receiving device determined based on the transmitted data, because there is an interval between the adjacent subcarriers, preventing interference between the subcarriers.

[0118] It should be noted that the above Figure 7 and Figure 8 The embodiments are described by taking the data sending device sending the subcarrier allocation mode to the data receiving device and the echo receiving device as an example. In another embodiment, the data receiving device can also determine the subcarrier allocation mode, and then send the subcarrier allocation mode to the data sending device and the echo receiving device, where the process of the data receiving device sending the subcarrier allocation mode to the data sending device and the echo receiving device is similar to the process of the embodiments shown in the above Figure 7 and Figure 8 Therefore, details are not described herein.

[0119] In another embodiment, the echo receiving device can also determine the subcarrier allocation manner, and then send the subcarrier allocation manner to the data sending device and the data receiving device. The process of sending the subcarrier allocation manner to the data sending device and the data receiving device by the echo receiving device is similar to the process of the embodiment shown in Figure 7 and Figure 8 The process is similar to the embodiment shown in

[0120] Based on the embodiment shown in Figure 3 , the target interval is determined according to the number of data receiving devices, that is, the number of data receiving devices is different, and the determined target interval is also different.

[0121] In some embodiments, the target interval is the difference between the number of data receiving devices and 1.

[0122] In the embodiment of the present application, at least two data receiving devices need to occupy subcarriers at the same time domain position, and each data receiving device allocates a plurality of subcarriers at the same time domain position, so that the distance between adjacent subcarriers allocated by each data receiving device is the target interval.

[0123] In some embodiments, the target interval is the difference between the number of data receiving devices and 1.

[0124] For any data receiving device, the subcarriers occupied by the data receiving device in the frequency domain resource have equal frequency intervals, that is, the frequency interval of adjacent frequency domain signals is the target interval. Assuming that the data receiving device occupies N u subcarriers of all N subcarriers in the frequency domain resource, and the N u subcarriers form a set N, and N(s) represents the s-th element of the set. Assuming that the center frequency of the subcarriers occupied by the data receiving device is f(i), where i=N(1), N(2)…, N(N u ). When the subcarrier equal interval allocation scheme is adopted, f(i+1)-f(i)=Δf can be obtained, where Δf is the target interval, and Δf is the difference between the number of data receiving devices and 1.

[0125] It should be noted that the above embodiment only describes the interval between adjacent subcarriers corresponding to one data receiving device. In another embodiment, for at least two data receiving devices, the interval between the two adjacent subcarriers corresponding to one data receiving device is a subcarrier corresponding to all other data receiving devices, that is, the target interval is the sum of the number of subcarriers corresponding to all other data receiving devices.

[0126] For example, if one time domain position includes 1024 subcarriers, and the data receiving device is 4, then for the first data receiving device, the 4n+1th subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2,..., 255, for the second data receiving device, the 4n+2th subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2,..., 255, for the third data receiving device, the 4n+3th subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2,..., 255, and for the fourth data receiving device, the 4n+4th subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2,..., 255.

[0127] For the first data receiving device, the target interval is one subcarrier corresponding to the second data receiving device, the third data receiving device and the fourth data receiving device respectively. For example, taking the first subcarrier and the fifth subcarrier of the first data receiving device as an example, the interval between the first subcarrier and the fifth subcarrier is the second subcarrier of the second data receiving device, the third subcarrier of the third data receiving device and the fourth subcarrier of the fourth data receiving device. And for the second subcarrier and the sixth subcarrier of the second data receiving device, the interval between the second subcarrier and the sixth subcarrier is the third subcarrier of the third data receiving device, the fourth subcarrier of the fourth data receiving device and the fifth subcarrier of the first data receiving device, and so on. The interval between the adjacent two subcarriers of each data receiving device is one subcarrier of all other data receiving devices.

[0128] In this case, referring to Figure 9 For the first terminal, the distance and speed of other terminals are the distance and speed corresponding to the black point in the figure.

[0129] For example, if one time domain position includes 1024 subcarriers, and the data receiving device is 4, then for the first data receiving device, the 4n+i subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2, …, 255, for the second data receiving device, the 4n+j subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2, …, 255, for the third data receiving device, the 4n+k subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2, …, 255, and for the fourth data receiving device, the 4n+l subcarrier in the 1024 subcarriers in each time domain position, n=0, 1, 2, …, 255, where i, j, k, l∈{1, 2, 3, 4} and i, j, k, l are all different, for each time domain position, i, j, k, l are randomly determined from 1, 2, 3, 4, but i, j, k, l are all different.

[0130] For the first data receiving device, the target interval is one subcarrier corresponding to the second data receiving device, the third data receiving device and the fourth data receiving device respectively. For example, in one time domain position, taking i=2, j=1, k=4 and l=3 as an example, taking the 2nd subcarrier and the 6th subcarrier of the first data receiving device as an example, the 3rd subcarrier of the fourth data receiving device, the 4th subcarrier of the third data receiving device and the 5th subcarrier of the second data receiving device are spaced between the 2nd subcarrier and the 6th subcarrier. And for the 3rd subcarrier and the 7th subcarrier of the fourth data receiving device, the 4th subcarrier of the third data receiving device, the 5th subcarrier of the second data receiving device and the 6th subcarrier of the first data receiving device are spaced between the 3rd subcarrier and the 7th subcarrier. And so on, each data receiving device is spaced one subcarrier of all other data receiving devices between adjacent two subcarriers.

[0131] In this case, referring to Figure 10 For the first terminal, the distance and speed of other terminals are the distance and speed corresponding to the black point in the figure.

[0132] In Figure 3 On the basis of the embodiment shown, the data receiving device is a terminal, the echo receiving device is an access network device or a terminal, and the data sending device is an access network device or a terminal.

[0133] In some embodiments, the data sending device and the echo receiving device can be the same device.

[0134] For example, the data sending device and the echo receiving device are both access network devices.

[0135] For example, the data sending device and the echo receiving device are both terminals, and the terminal of the data sending device and the echo receiving device is not the same as the terminal of the data receiving device.

[0136] It should be noted that when the data sending device and the echo receiving device are the same device, the sensing and communication integrated system is an active radar system, the data sending device sends bit data to the data receiving device, and the data receiving device functions as a receiver to complete communication functions. The echo signal generated by the bit data sent by the data sending device and irradiated on the data receiving device is returned to the echo receiving device (i.e., the data sending device), and the echo receiving device detects the speed and distance of the data receiving device through a radar processor to complete radar functions.

[0137] In other embodiments, the data sending device and the echo receiving device are different devices.

[0138] For example, the data sending device is an access network device 1, the data receiving device is a terminal, and the echo receiving device is an access network device 2 or a set of access network devices.

[0139] For example, the data sending device is a terminal 1, the data receiving device is a terminal 2, and the echo receiving device is a terminal 3 or a combination of terminals.

[0140] For example, the data sending device is a terminal 1, the data receiving device is a terminal 2, and the echo receiving device is an access network device or a set of access network devices.

[0141] It should be noted that when the data sending device and the echo receiving device are different devices, the sensing and communication integrated system is a passive radar system, the data sending device and the echo receiving device are not the same, and there can be multiple echo receiving devices. The data sending device sends bit data to the data receiving device, and the data receiving device functions as a receiver to complete communication functions. The echo signal generated by the bit data sent by the data sending device and irradiated on the data receiving device is returned to the echo receiving device, and the echo receiving device detects the speed and distance of the data receiving device through a radar processor to complete radar functions.

[0142] It should be noted that the above embodiments can be split into new embodiments or combined with other embodiments to form new embodiments, and the combinations of the embodiments are not limited in the present application.

[0143] Figure 11 A block diagram of a subcarrier determination apparatus provided by an example embodiment of the present application is shown, referring to FIG. 11. Figure 11 The apparatus includes:

[0144] A determination module 1101 is configured to determine a plurality of subcarriers corresponding to each of at least two transmission devices in the same time domain position.

[0145] The interval between two adjacent subcarriers in the plurality of subcarriers is a target interval, and the transmission device is at least one of the following devices: a data receiving device, an echo receiving device.

[0146] In some embodiments, the subcarriers of different transmission devices do not overlap with each other.

[0147] In some embodiments, the apparatus further includes:

[0148] The receiving module 1102 is configured to receive a subcarrier allocation manner of a transmission device sent by an access network device, the subcarrier allocation manner indicating a target interval of the transmission device.

[0149] The determining module 1101 is further configured to determine, according to the subcarrier allocation manner, that an interval between two adjacent subcarriers in a plurality of subcarriers corresponding to a same time domain position of each transmission device is the target interval.

[0150] In some embodiments, the determining module 1101 is further configured to:

[0151] The subcarrier allocation manner of the transmission device is determined according to a communication protocol, the subcarrier allocation manner indicating the target interval of the transmission device.

[0152] The interval between two adjacent subcarriers in the plurality of subcarriers corresponding to the same time domain position of each transmission device is determined to be the target interval according to the subcarrier allocation manner.

[0153] In some embodiments, the apparatus further includes:

[0154] The receiving module 1102 is configured to receive a subcarrier allocation manner of a transmission device sent by a core network device, the subcarrier allocation manner indicating a target interval of the transmission device.

[0155] The determining module 1101 is further configured to determine, according to the subcarrier allocation manner, that an interval between two adjacent subcarriers in a plurality of subcarriers corresponding to a same time domain position of each transmission device is the target interval.

[0156] In some embodiments, the target device is at least one of the following devices:

[0157] A data sending device, a data receiving device, or an echo receiving device.

[0158] In some embodiments, the apparatus further includes:

[0159] The sending module 1103 is configured to send a subcarrier allocation manner to a transmission device, the subcarrier allocation manner indicating a target interval of the transmission device.

[0160] In some embodiments, the sending module 1103 is further configured to:

[0161] send the subcarrier allocation mode to the transmission device through DCI signaling,

[0162] or,

[0163] send the subcarrier allocation mode to the transmission device through MAC-CE signaling;

[0164] or,

[0165] send the subcarrier allocation mode to the transmission device through RRC signaling.

[0166] In some embodiments, the data sending device is an access network device or a terminal.

[0167] In some embodiments, the data receiving device is a terminal.

[0168] In some embodiments, the echo receiving device is an access network device or a terminal.

[0169] In some embodiments, the target interval is the difference between the number of data receiving devices and 1.

[0170] It should be noted that the apparatus provided by the above embodiments, in realizing its functions, is only exemplified by the above division of each functional module, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0171] Figure 13 A structural schematic diagram of a communication device provided by an example embodiment of the present application is shown, which includes a processor 1301, a receiver 1302, a transmitter 1303, a memory 1304 and a bus 1305.

[0172] The processor 1301 includes one or more processing cores. The processor 1301 performs various functional applications and information processing by running software programs and modules.

[0173] The receiver 1302 and the transmitter 1303 can be implemented as a communication component, which can be a communication chip.

[0174] The memory 1304 is connected to the processor 1301 through the bus 1305.

[0175] The memory 1304 can be used to store at least one program code, and the processor 1301 is configured to execute the at least one program code to implement the steps in the above method embodiments.

[0176] In addition, the communication device can be a terminal or a network device. The memory 1304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: a magnetic or optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic storage, a flash memory, a programmable read-only memory (PROM).

[0177] In an exemplary embodiment, a computer readable storage medium is also provided, and the executable program code is stored in the readable storage medium, and the executable program code is loaded and executed by the processor to implement the subcarrier determination method performed by the communication device provided by each method embodiment.

[0178] In an exemplary embodiment, a chip is provided, and the chip includes a programmable logic circuit and / or program instructions, and when the chip is running on a terminal or a network device, it is used to implement the subcarrier determination method provided by each method embodiment.

[0179] In an exemplary embodiment, a computer program product is provided, and when the computer program product is executed by the processor of the terminal or the network device, it is used to implement the subcarrier determination method provided by each method embodiment.

[0180] Those of ordinary skill in the art can understand that all or part of the steps of the above embodiments can be completed by hardware, or by program instructions instructing relevant hardware to complete, and the program can be stored in a computer readable storage medium, and the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk.

[0181] The above is only an optional embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining subcarriers, characterized in that, The method is performed by the target device, and the method includes: Determine multiple subcarriers corresponding to the same time-domain location for each of at least two transmission devices; the multiple subcarriers are used for data transmission from the data transmitting device to the transmission device. Wherein, the subcarriers of different transmission devices do not overlap with each other, the interval between two adjacent subcarriers among the multiple subcarriers is the target interval, and the transmission devices are the following two types of devices: data receiving devices and echo receiving devices; The interval between two adjacent subcarriers corresponding to one of the data receiving devices is the sum of the number of subcarriers corresponding to all other data receiving devices; the signal sent by the data transmitting device to the data receiving device, after being reflected by the data receiving device to the echo receiving device, is used together with the signal received by the echo receiving device from the data transmitting device to determine the moving speed and / or distance of the data receiving device.

2. The method according to claim 1, characterized in that, The determination of multiple subcarriers corresponding to the same time-domain location for each of at least two transmission devices includes: The device receives a subcarrier allocation method for the transmission equipment sent by the access network device, wherein the subcarrier allocation method indicates the target interval of the transmission equipment; Based on the subcarrier allocation method, the interval between two adjacent subcarriers among the multiple subcarriers corresponding to the same time domain location of each transmission device is determined as the target interval.

3. The method according to claim 1, characterized in that, The determination of multiple subcarriers corresponding to the same time-domain location for each of at least two transmission devices includes: The subcarrier allocation method of the transmission device is determined according to the communication protocol, and the subcarrier allocation method indicates the target interval of the transmission device; Based on the subcarrier allocation method, the interval between two adjacent subcarriers among the multiple subcarriers corresponding to the same time domain location of each transmission device is determined as the target interval.

4. The method according to claim 1, characterized in that, The determination of multiple subcarriers corresponding to the same time-domain location for each of at least two transmission devices includes: The core network device receives a subcarrier allocation method for the transmission equipment, wherein the subcarrier allocation method indicates the target interval of the transmission equipment; Based on the subcarrier allocation method, the interval between two adjacent subcarriers among the multiple subcarriers corresponding to the same time domain location of each transmission device is determined as the target interval.

5. The method according to any one of claims 1 to 4, characterized in that, The target device is at least one of the following: Data transmitting equipment, data receiving equipment, or echo receiving equipment.

6. The method according to claim 5, characterized in that, The target device is the data transmitting device, and the method further includes: Send a subcarrier allocation method to the transmission device, the subcarrier allocation method indicating the target interval of the transmission device.

7. The method according to claim 6, characterized in that, The step of sending the subcarrier allocation method to the transmission device includes: The subcarrier allocation method is sent to the transmission device via DCI signaling; or, The subcarrier allocation method is sent to the transmission device via MAC-CE signaling; or, The subcarrier allocation method is sent to the transmission device via RRC signaling.

8. The method according to claim 5, characterized in that, The data transmission device is an access network device or a terminal.

9. The method according to claim 5, characterized in that, The data receiving device is a terminal.

10. The method according to claim 5, characterized in that, The echo receiving device is an access network device or terminal.

11. The method according to any one of claims 1 to 4, characterized in that, The target interval is the difference between the number of data receiving devices and 1.

12. A subcarrier determination device, characterized in that, The device includes: A determining module is configured to determine multiple subcarriers corresponding to the same time-domain location for each of at least two transmission devices; the multiple subcarriers are used by the data transmitting device to transmit data to the transmission device. Wherein, the subcarriers of different transmission devices do not overlap with each other, the interval between two adjacent subcarriers among the multiple subcarriers is the target interval, and the transmission devices are the following two types of devices: data receiving devices and echo receiving devices; The interval between two adjacent subcarriers corresponding to one of the data receiving devices is the sum of the number of subcarriers corresponding to all other data receiving devices; the signal sent by the data transmitting device to the data receiving device, after being reflected by the data receiving device to the echo receiving device, is used together with the signal received by the echo receiving device from the data transmitting device to determine the moving speed and / or distance of the data receiving device.

13. The apparatus according to claim 12, characterized in that, The device further includes: A receiving module is used to receive a subcarrier allocation method of a transmission device sent by an access network device, wherein the subcarrier allocation method indicates the target interval of the transmission device; The determining module is further configured to determine, based on the subcarrier allocation method, the interval between two adjacent subcarriers among the multiple subcarriers corresponding to the same time-domain location of each transmission device as the target interval.

14. The apparatus according to claim 12, characterized in that, The determining module is further configured to: The subcarrier allocation method of the transmission device is determined according to the communication protocol, and the subcarrier allocation method indicates the target interval of the transmission device; Based on the subcarrier allocation method, the interval between two adjacent subcarriers of multiple subcarriers corresponding to the same time domain position of each transmission device is determined as the target interval.

15. The apparatus according to claim 12, characterized in that, The device further includes: A receiving module is used to receive the subcarrier allocation method of the transmission equipment sent by the core network equipment, wherein the subcarrier allocation method indicates the target interval of the transmission equipment; The determining module is further configured to determine, based on the subcarrier allocation method, the interval between two adjacent subcarriers among the multiple subcarriers corresponding to the same time-domain location of each transmission device as the target interval.

16. The apparatus according to any one of claims 12 to 15, characterized in that, The target device is at least one of the following: A data transmitting device, a data receiving device, or an echo receiving device, wherein the target device is the device that determines the subcarrier.

17. The apparatus according to claim 16, characterized in that, The device further includes: A transmitting module is used to transmit a subcarrier allocation method to the transmission device, wherein the subcarrier allocation method indicates the target interval of the transmission device.

18. The apparatus according to claim 17, characterized in that, The sending module is further configured to: The subcarrier allocation method is sent to the transmission device via DCI signaling; or, The subcarrier allocation method is sent to the transmission device via MAC-CE signaling; or, The subcarrier allocation method is sent to the transmission device via RRC signaling.

19. The apparatus according to claim 16, characterized in that, The data transmission device is an access network device or a terminal.

20. The apparatus according to claim 16, characterized in that, The data receiving device is a terminal.

21. The apparatus according to claim 16, characterized in that, The echo receiving device is an access network device or terminal.

22. The apparatus according to claim 16, characterized in that, The target interval is the difference between the number of data receiving devices and 1.

23. A communication device, characterized in that, The communication device includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the subcarrier determination method as described in any one of claims 1 to 11.

24. A computer-readable storage medium, characterized in that, The readable storage medium stores executable program code, which is loaded and executed by a processor to implement the subcarrier determination method as described in any one of claims 1 to 11.

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