Communication method and device

Abstract

A communication method and apparatus, belonging to the field of communications, in the method, a first network device acquires a first time-frequency resource, the first time-frequency resource comprising a time-frequency resource for uplink communication and / or downlink communication in a frequency division duplex (FDD) system; and the first network device performs a sensing operation by using the first time-frequency resource. Based on the method, in a frequency division duplex system, network equipment can respectively perform uplink transmission and downlink transmission on the same time domain resource by using different frequency domain resources. Based on the characteristic of the frequency division duplex system, the network device can still use the time-frequency resource for downlink communication to transmit downlink data when multiplexing the time-frequency resource for uplink communication for sensing, or the network device can still use the time-frequency resource for downlink communication to transmit downlink data when multiplexing the time-frequency resource for downlink communication for sensing. According to the method, the time-frequency resource for uplink communication can still be used for transmitting uplink data, so that the problem of communication interruption caused by sensing can be avoided, and the reliability of communication and sensing is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, and in particular to a communication method and device. BACKGROUND

[0002] Radar sensing, also known as radar detection, is widely used in air-ground traffic monitoring, weather detection, security monitoring, electromagnetic imaging, etc. In recent years, with the large-scale growth of commercial demand for civilian sensing and ubiquitous sensing, sensing integration based on communication base stations has become a major technical branch of the 5th generation (5G) to 5G-advanced (5G-A) and future 6th generation (6G). From the frequency spectrum of radar, there are different radar sensing application requirements from below 300 megahertz (MHz) to several hundred gigahertz (GHz) range. Relatively speaking, low-frequency sensing has better penetration, while high-frequency radar has better positioning accuracy, etc.; therefore, sensing integration in the future will also start from the current low-altitude economic sensing, and will gradually expand to full-frequency domain sensing in marine, environmental, etc. scenarios, accordingly, the time division duplex (TDD) frequency domain belonging to the middle and high frequency domain and the frequency division duplex (FDD) frequency domain belonging to the middle and low frequency domain will have corresponding sensing requirements.

[0003] The current sensing integration system will cause interruption of communication services during sensing, so the reliability of communication and sensing is not high. SUMMARY

[0004] Embodiments of the present application provide a communication method and device to improve the reliability of communication and sensing.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] In a first aspect, a communication method is provided. The method is applied to a first network device, can be executed by a module (such as a processor, a chip, or a chip system, etc.) applied to the first network device, and can also be implemented by a logic node, a logic module, or software that can realize all or part of the functions of the first network device. For convenience of description, the method is introduced below by taking the first network device as an example. The method comprises: a first network device acquires a first time-frequency resource, wherein the first time-frequency resource comprises a time-frequency resource used for uplink communication and / or downlink communication in a frequency division duplex system (FDD); and the first network device performs a sensing operation using the first time-frequency resource.

[0007] Based on the method of the first aspect, in a frequency division duplex system, the network device can use different frequency domain resources to perform uplink transmission and downlink transmission on the same time domain resource. Based on this characteristic of the frequency division duplex system, when the network device multiplexes the time-frequency resources used for uplink communication for sensing, it can still use the time-frequency resources used for downlink communication to transmit downlink data, or when the network device multiplexes the time-frequency resources used for downlink communication for sensing, it can still use the time-frequency resources used for uplink communication to transmit uplink data, thereby avoiding the problem of communication interruption caused by sensing.

[0008] In a possible design, the frequency domain resources in the first time-frequency resources include a single unit frequency domain resource or a plurality of unit frequency domain resources with continuous frequency domain positions, or a plurality of unit frequency domain resources with non-continuous frequency domain positions. The single unit frequency domain resource or the plurality of unit frequency domain resources with continuous frequency domain positions, or the plurality of unit frequency domain resources with non-continuous frequency domain positions can be understood as a single center frequency point uplink / downlink frequency band or a set of a plurality of continuous / non-continuous center frequency point uplink / downlink frequency bands. The sensing operation based on a plurality of frequency bands means that the first network device can obtain a wider sensing bandwidth, and the first network device obtains a higher distance sensing resolution.

[0009] In a possible design, the unit frequency domain resource in the first frequency domain resource is at least one of the following: a carrier group or a carrier allocated with a center frequency point. In other words, the network device can select a carrier group or a carrier for sensing according to actual conditions, for example, to obtain a larger sensing resolution, a plurality of carrier groups can be selected for sensing.

[0010] In a possible design, the second time-frequency resource is adjacent to the frequency domain position of the first time-frequency resource and has the same time domain position, the second time-frequency resource is a time-frequency resource configured by the second network device for uplink communication and / or downlink communication in the frequency division duplex system, and the internal frequency domain resource of the first time-frequency resource adjacent to the first time-frequency resource on one side can be set as a guard band; the guard band is a time-frequency resource configured not to be used for communication or sensing. It can be seen that, compared with the first network device obtaining the first time-frequency resource and using the first time-frequency resource for sensing operation. This scheme further considers the problem of communication interference caused by the existence of adjacent frequency of the first time-frequency resource, solves the problem of adjacent frequency interference by setting a guard band in the frequency domain resource adjacent in the frequency domain position, and improves the reliability of communication and sensing.

[0011] A possible design scheme, the first time-frequency resource includes: the first time domain resource, the second time domain resource and the third time domain resource which have the same frequency domain position and adjacent time domain positions, and the first network device performs sensing operation using the first time-frequency resource. That is, the frequency division duplex sensing integrated system can make the communication and sensing in different frequency domains, and can further improve the resource utilization rate by further dividing the time domain of the time-frequency resource, performing communication operation in part of the time domain, and performing sensing operation in part of the time domain.

[0012] Optionally, if the second time domain resource is used for performing sensing operation, the first time domain resource and the third time domain resource are time domain resources configured for uplink communication in the frequency division duplex system; the internal time domain resource of the second time domain resource adjacent to the third time domain resource can be set as a guard interval; wherein the guard interval is a time domain resource configured not to be used for communication or sensing. That is, the frequency division duplex sensing integrated system can make the communication and sensing in different frequency domains, and can further improve the resource utilization rate by further dividing the time domain of the time-frequency resource, performing communication operation in part of the time domain, and performing sensing operation in part of the time domain. It is inevitable that the communication and sensing of adjacent time domains will affect each other, for example: the third time domain resource is used for uplink communication by other network devices, and the second time domain resource is used for sensing operation by the first network device, and it is possible that the other network devices receive the information sent by the terminal, and the sensing signal sent by the first network device to the sensed target is received by mistake due to the lack of time domain interval between the third time domain resource and the second time domain resource. By setting the part of the time domain resource adjacent to the time domain resource as a guard interval, the problem of mutual interference of the same frequency and different time domains is solved, and the reliability of the communication and sensing is improved.

[0013] Optionally, if the second time domain resource is used to perform the sensing operation, the first time domain resource and the third time domain resource are time domain resources configured for downlink communication in a frequency division duplex system; a time domain resource inside the second time domain resource adjacent to the first time domain resource can be set as a guard interval; wherein the guard interval is a time domain resource configured not to be used for communication or sensing. That is, based on the frequency division duplex sensing integrated system, communication and sensing can be performed in different frequency domains, and further time domain division of the time-frequency resource can be considered, part of the time domain is used for communication operation, and part of the time domain is used for sensing operation. It is inevitable that the communication and sensing of adjacent time domains will interfere with each other, for example: the first time domain resource is used for downlink communication by other network devices, and the second time domain resource is used for sensing operation by the first network device. Due to the lack of time domain interval between the first time domain resource and the second time domain resource, when the first network device receives the echo signal of the sensing target, the signal transmitted by the other network device to the terminal is also received. By setting part of the time domain resource adjacent to the time domain resource as a guard interval, the problem of mutual interference of the same frequency and different time domains is solved, and the reliability of communication and sensing is improved.

[0014] In a possible design, the first network device sends indication information to a second network device, the second network device being a neighboring network device of the first network device, and the indication information being used to indicate that the first network device performs the sensing operation on the first time-frequency resource. In other words, the first network device and the second network device have a certain overlap in network coverage, and are neighboring network devices of each other. In the case where one of the network devices performs the sensing operation on the first time-frequency resource, the other network device is preferably silent on the first time-frequency resource to avoid mutual interference of the other network device using the first time-frequency resource for communication. In this scheme, the first network device informs the second network device that it is performing the sensing operation by sending the indication information, so that the second network device considers this interference factor and selects to be silent on the first time domain resource, and does not perform the communication and sensing operation.

[0015] In a second aspect, a communication apparatus is provided, which includes modules for performing the method in the first aspect, for example, a transceiver module and a processing module.

[0016] In a possible design, the communication apparatus in the second aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be used for the communication apparatus in the second aspect to communicate with other communication apparatuses.

[0017] In a possible design, the communication apparatus in the second aspect can further include a memory. The memory can be integrated with the processor, or can be separately arranged. The memory can be used to store a computer program and / or data involved in the method in the first aspect.

[0018] In embodiments of the present application, the communication apparatus of the second aspect can be a network device, or a module (e.g., a processor, a chip, or a chip system, etc.) applied to the network device, or a logic node, a logic module, or a software implementation capable of implementing all or part of the functions of the network device.

[0019] It can be understood that the technical effects of the apparatus of the second aspect can also be referred to the above-mentioned related descriptions of the first aspect, and will not be repeated here.

[0020] In a third aspect, a communication apparatus is provided. The communication apparatus includes a processor coupled to a memory, the processor configured to execute instructions stored in the memory to cause the communication apparatus to perform the method of the first aspect.

[0021] In a possible design, the communication apparatus of the third aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be used for the communication apparatus of the third aspect to communicate with other communication apparatuses.

[0022] In embodiments of the present application, the communication apparatus of the third aspect can be the network device of the first aspect, or a chip (system) or other components or assemblies that can be arranged in the network device, or an apparatus containing the network device.

[0023] In addition, the technical effects of the communication apparatus of the third aspect can be referred to the technical effects of the method of the first aspect, which will not be repeated here.

[0024] In a fourth aspect, a communication apparatus is provided, including a processor and a memory; the memory is configured to store instructions, when the processor executes the instructions, to cause the communication apparatus to perform the method of the first aspect.

[0025] In a possible design, the communication apparatus of the fourth aspect can further include a transceiver. The transceiver can be a transceiver circuit or an interface circuit. The transceiver can be used for the communication apparatus of the fourth aspect to communicate with other communication apparatuses.

[0026] In embodiments of the present application, the communication apparatus of the fourth aspect can be the network device of the first aspect, or a chip (system) or other components or assemblies that can be arranged in the network device, or an apparatus containing the network device.

[0027] In addition, the technical effects of the communication apparatus of the fourth aspect can be referred to the technical effects of the method of the first aspect, which will not be repeated here.

[0028] In a fifth aspect, a chip is provided, including a controller and an interface circuit, wherein the controller is configured to interact with other apparatuses through the interface circuit to perform the method of the first aspect.

[0029] In a sixth aspect, a communication system is provided, wherein the communication system includes at least one of the following: an apparatus for executing the method of the first aspect.

[0030] In a seventh aspect, a computer-readable storage medium is provided, which includes a computer program or instruction stored therein, and when the computer program or instruction is executed, the method of the first aspect is executed.

[0031] In an eighth aspect, a computer program product is provided, comprising a computer program or instructions, which enables the method of the first aspect to be performed when the computer program or instructions are executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of wireless sensing scenario;

[0033] Figure 2 This is a schematic diagram of the architecture of the synaesthesia integration system;

[0034] Figure 3 Schematic diagram of synaesthesia multiplexing based on time division duplex communication system;

[0035] Figure 4 A flow chart of a communication method provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of frequency domain resources of a frequency division duplex system according to an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the frequency domain positions of the first time-frequency resource and the second time-frequency resource and setting a guard band in the first time-frequency resource according to an embodiment of the present application;

[0038] Figure 7 A schematic diagram of setting a guard band for a receiving channel for receiving an echo signal corresponding to the first time-frequency resource and a guard band for a sending channel for sending a perception signal corresponding to the first time-frequency resource in an embodiment of the present application;

[0039] Figure 8 A schematic diagram of setting a guard interval for the second time domain resource in an embodiment of the present application;

[0040] Figure 9 Schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 1 ;

[0041] Figure 10 Schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0042] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a harmonized communication and sensing (HCS) system, a wireless fidelity (WiFi) system, a vehicle to everything (V2X) communication system, a device-to-device (D2D) communication system, a vehicle networking communication system, a 4th generation (4G) mobile communication system such as a long term evolution (LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, a 5th generation (5G) mobile communication system such as a new radio (NR) system, and a future communication system such as a 6th generation (6G) mobile communication system, and the like.

[0043] In the embodiments of the present application, the HCS system is taken as an example, and the HCS system can also be referred to as an integrated sensing and communication (ISAC) technology.

[0044] In recent years, wireless sensing technology has attracted widespread attention from the industry and academia. Wireless sensing technology analyzes the changes of wireless signals in the propagation process to obtain the characteristics of the signal propagation space (channel) to achieve the sensing of the scene. Here, the scene includes both the factors of the target itself (such as the position, posture, and action of the target), and other external factors (such as buildings and moving vehicles). For example, radar is a most classic wireless sensing means, which has been widely used in the fields of agriculture, meteorology, and the like. The basic principle of radar is that a transmitter transmits a specific waveform signal, which is received by a receiver after passing through a wireless channel. The transmitter signal and the received signal are combined for signal processing, so as to extract the target of interest in the wireless channel.

[0045] The main function of wireless communication is to exchange information between transceivers, and the basic principle is that the transmitter transmits a specific waveform signal, which is received by the receiver after passing through the wireless channel, and the signal transmitted by the transmitter is demodulated after signal processing. It can be seen that, for the whole physical process of transmission, transmission, and reception, the process of wireless sensing and wireless communication is similar, so in the process of 5G evolving to 5G enhanced technology, and in the future 6G network, ISAC is proposed, which can also be called joint communications and sensing (JCS / JCAS), that is, communication and sensing integrated technology, which is considered one of the key technologies to expand the business capabilities of mobile communication networks. The core idea of this technology is to add sensing capability to the mobile communication network to build the ability to detect, track, and image targets, so that communication and sensing capabilities are integrated in one network, achieving harmonious coexistence, and even mutual benefit.

[0046] ISAC can be generally divided into two modes: single-station sensing and double-station sensing. Among them, the single-station sensing is the sending end and receiving end of the sensing signal for the same device. From the sensing signal flow, the sensing station not only sends the sensing signal, but also receives the signal after the target surface action (such as reflection, diffraction, scattering, etc.). Therefore, the single-station sensing mode is also called self-transmission and self-reception mode. For double-station sensing, the sending end and receiving end of the sensing signal are two devices with different spatial positions. From the sensing signal flow, the signal after the target surface action (reflection, diffraction, scattering, etc.) of the sensing signal sent by sensing station A is received by sensing station B. Therefore, the double-station sensing mode is also called A-transmission and B-reception mode.

[0047] As shown in Figure 1 , the sensing mode can be divided into the following 6 modes:

[0048] 1) Base station transmits and terminal receives: the base station acts as the transmitting end and control end, and the terminal acts as the receiving end. The sensing signal is sent by the base station, reflected by the target (such as a bicycle, a car, etc.) in the environment, and then received and processed by the terminal to obtain the sensing result, such as the distance, speed, angle, intensity, etc. of the target.

[0049] 2) Terminal transmits and base station receives: the terminal acts as the transmitting end, and the base station acts as the receiving end and control end. The sensing signal is sent by the terminal, reflected by the target in the environment, and then received and processed by the base station to obtain the sensing result.

[0050] 3) Base station A sends base station B: base station A as the transmitting end and the control end, base station B as the receiving end. The sensing signal is sent by base station A, and after being reflected by the target in the environment, the echo signal is received and processed by base station B to obtain the sensing result. Optionally, there can also be a base station C, in which case base station A can only serve as a transmitting end, and base station C can serve as a control end.

[0051] 4) Terminal A sends terminal B: terminal A as the transmitting end and the control end, terminal B as the receiving end. The sensing signal is sent by terminal A, and after being reflected by the target in the environment, the echo signal is received and processed by terminal B to obtain the sensing result.

[0052] 5) Base station self-sending and self-receiving: the base station as the transmitting end, receiving end and control end. The sensing signal is sent by the base station, and after being reflected by the target in the environment, the echo signal is received and processed by the base station to obtain the sensing result.

[0053] 6) Terminal self-sending and self-receiving: the terminal as the transmitting end, receiving end and control end. The sensing signal is sent by the terminal, and after being reflected by the target in the environment, the echo signal is received and processed by the terminal to obtain the sensing result.

[0054] In the embodiments of the present application, single station sensing is mainly taken as an example, that is, the transmitting end and the receiving end of the sensing signal are the same device. From the perspective of the sensing signal flow, the sensing station not only sends the sensing signal, but also receives the signal after the target surface action (such as reflection, diffraction, scattering, etc.) for example. However, the embodiments of the present application are also applicable to double station sensing, and the specific implementation is similar to single station sensing, which will not be described here.

[0055] The system architecture in the embodiments of the present application is shown in FIG. 2, which includes at least one network device, for example, a network device 210 as shown in FIG. 2; the system 200 can also include at least one terminal device, for example, a terminal device 220 as shown in FIG. 2; and the system 200 can also include at least one sensed target, for example, a target 230 as shown in FIG. 2. Figure 2 Figure 2 Figure 2 Figure 3 ​​​The network device 210 has a communication function, that is, the network device 210 can communicate with the terminal device 220 through a wireless link, and then interact information. It can be understood that the network device and the terminal device can also be referred to as a communication device. The network device 210 has a sensing function. For example, after the network device 210 sends a sensing signal, a back wave signal of the sensed target 230 is received. The network device 210 can obtain a sensing result of the sensed target according to the back wave signal of the sensed target 230, for example, a distance, an angle, a position, a moving speed, or a size of the sensed target. In this way, the network device 210 can further assist communication by using the sensing result, and improve the quality of communication. It should be noted that the sensing function and the communication function can be implemented by one network device, or can be implemented by multiple network devices in cooperation, and the embodiments of the present application are not limited.

[0056] The system of the integrated sensing and communication is a system that integrates the communication function and the sensing function. The sensing and communication integration has the following advantages: the communication and the radar sensing function share the hardware, which can save the hardware cost; the sensing function can be directly deployed on the existing station address, so the deployment is convenient; the sensing result can be used to assist communication, and the quality of communication is improved.

[0057] The network device can be a radio access network (RAN) device, also referred to as an access network device. The access network device can specifically be an access network device of a next-generation mobile communication system, for example, a 6G base station, or in the next-generation mobile communication system, the access network device can also have other naming manners, which are all included in the protection scope of the embodiments of the present application, and the present application does not make any limitation thereto. Alternatively, the access network device can also include a gNB in a 5G, such as a new radio (NR) system, or one or a group (including multiple antenna panels) of antenna panels of a base station in 5G, or can also be a network node constituting a gNB, a transmission and reception point (TRP or transmission point, TP) or a transmission measurement function (TMF), such as a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), an RSU with base station function, or a wired access gateway, or a core network element of 5G, and the like. Alternatively, the access network device can also include an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, wearable devices, vehicle-mounted devices, and the like.

[0058] The CU and the DU can be separately arranged, or can also be included in the same network element, for example, a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, included in a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into a network device in an access network RAN, or the CU can be divided into a network device in a core network CN, which is not limited herein.

[0059] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as O-CU (open CU), the DU can also be referred to as O-DU, the CU-CP can also be referred to as O-CU-CP, the CU-UP can also be referred to as O-CU-UP, and the RU can also be referred to as O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the 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.

[0060] In addition, the network device in this application can also be a device with sensing function, which can send sensing signals, receive and process echo signals of the sensed target. In the embodiments of this application, the communication device for implementing the function of the network device can be a network device, a network device with part of the function of a base station, or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device.

[0061] The terminal device is a user-side device with wireless transceiving function, which can be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (e.g., a communication module, a modem, or a chip system, etc.) built in the above devices. The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communications (M2M / MTC) communication, internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, unmanned aerial vehicle, robot, etc. For example, the terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an internet-of-things device in MTC, a monitoring camera in smart transportation and smart city, or a communication device on an unmanned aerial vehicle, etc. The terminal device can also be referred to as user equipment (UE), user terminal, user apparatus, subscriber unit, subscriber station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc.

[0062] The perceived target refers to various tangible objects on the ground that can be perceived, such as mountains, forests, or buildings, etc. It can also include movable objects such as vehicles, unmanned aerial vehicles, pedestrians, terminal devices, etc. The perceived target is a target that can be perceived by a network device with a perception function, and the target can feed back electromagnetic waves to the network device. The perceived target can also be referred to as a detected target, a perceived object, a detected object, or a perceived device, etc., which are not limited in the embodiments of the present application.

[0063] The perception signal refers to a signal used for perceiving a target or detecting a target, or in other words, the perception signal refers to a signal used for perceiving environmental information or detecting environmental information. For example, the perception signal is an electromagnetic wave sent by the network device for perceiving environmental information. The perception signal can also be referred to as a radar signal, a radar perception signal, a detection signal, a radar detection signal, an environmental perception signal, and the like, and the embodiments of the present application are not limited thereto. In this application, the perception signal can also be referred to as a radar signal, a detection signal, a radar perception signal, a radar detection signal, an environmental perception signal, and the like. Illustratively, perception can be understood as determining the attributes of the perceived target, and the attributes can include speed, shape and size, position, type, and the like.

[0064] The echo signal refers to a signal formed after the perception signal reaches the perceived target and is reflected by the perceived target.

[0065] The communication signal refers to an electromagnetic wave signal used for communication, or in other words, used for data transmission.

[0066] Currently, the HCS system uses time division duplex (TDD) to realize integrated sensing and communication. Since the TDD communication system itself supports the same frequency time division transmission mechanism, and sensing needs to support the same frequency simultaneous transmission, introducing sensing on the TDD spectrum will cause adjacent frequency interference and same frequency adjacent area interference between sensing and communication. Fortunately, the current communication spectrum that supports sensing, such as 4.9G spectrum, has no adjacent communication spectrum, so by occupying the entire communication spectrum, the adjacent frequency interference can be solved, that is, by supporting time division multiplexing of communication and sensing through time division multiplexing, the interference between the two can be avoided.

[0067] However, as Figure 4 shown, compared with the existing pure communication, the transmission of the perception signal in the perception transmission channel and the reception of the echo signal in the perception reception channel in the time division duplex integrated sensing and communication service will cause the "interruption" of the communication service, especially for the downlink service, and in the scenario of not occupying the entire communication spectrum, the adjacent frequency interference and the same frequency adjacent area interference cannot be solved.

[0068] To solve the above technical problems, the embodiments of the present application propose the following technical solutions.

[0069] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0070] In the embodiments of the present application, the indication can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by certain information is referred to as to-be-indicated information. In the implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or an index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of various information agreed in advance (for example, a protocol), thereby reducing the indication overhead to a certain extent. Meanwhile, a common part of various information can be identified and uniformly indicated, so as to reduce the indication overhead caused by separately indicating the same information.

[0071] In addition, the specific indication manner can also be various existing indication manners, for example, but not limited to, the above indication manners and various combinations thereof. The specific details of various indication manners can refer to the prior art, and will not be described herein. As known from the above, for example, when multiple information of the same type needs to be indicated, the indication manners of different information can be different. In the implementation process, the required indication manner can be selected according to the specific needs, and the selected indication manner is not limited in the embodiments of the present application. In this way, the indication manner involved in the embodiments of the present application should be understood as covering various methods that can enable the to-be-indicated information to be known by the to-be-indicated party.

[0072] It should be understood that the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending occasion of the sub-information can be the same or different. The specific sending method is not limited in the embodiments of the present application. The sending period and / or sending occasion of the sub-information can be predefined, for example, predefined according to a protocol, or configured by the sending end device by sending configuration information to the receiving end device.

[0073] In the present application, the "sending information" can be understood as that a device sends information to another device, or can also be understood as that a logical module in a device sends information to another logical module. For example, the "access network device sends information" can be understood as that the access network device sends information to another device (such as a terminal), or can be understood as that a logical module 1 in the access network device sends information to a logical module 2 in the access network device.

[0074] In the present application, "receiving information" can be understood as a device receiving information from another device, or can also be understood as a logical module in a device receiving information from another logical module. For example, "the access network device receiving information" can be understood as the access network device receiving information from another device (such as a terminal), or can be understood as a logical module 1 in the access network device receiving information from a logical module 2 in the access network device.

[0075] In the present application, "sending information to (for example, a terminal)" or related illustrations in the drawings can be understood as that the destination of the information is the terminal. It can include directly or indirectly sending information to the terminal. "Receiving information from (for example, a terminal)" or "receiving information from (for example, a terminal)" or "receiving information sent by (for example, a terminal)", or related illustrations in the drawings can be understood as that the source of the information is the terminal, and can include directly or indirectly receiving information from the terminal. The information can be processed as necessary between the source and the destination of the information sending, such as format change, etc., but the destination can understand the valid information from the source. Similar expressions in the present application can be similarly understood, and will not be repeated here.

[0076] In the present application, "predefined" or "preconfigured" can be realized by pre-storing corresponding codes, tables or other means for indicating related information in a device, and the embodiments of the present application do not limit the specific implementation manner. Wherein, "storing" can mean storing in one or more memories. One or more memories can be separately arranged, or can be integrated in the encoder or decoder, processor, or communication device. One or more memories can be part of separate arrangement, and part of integrated in the decoder, processor, or communication device. The type of memory can be any form of storage medium, and the embodiments of the present application do not limit this.

[0077] The "protocol" involved in the embodiments of the present application can refer to a protocol family in the communication field, a standard protocol similar to the frame structure of the protocol family, or a related protocol applied to a future communication system, and the embodiments of the present application do not specifically limit this.

[0078] In the embodiments of the present application, "when", "in the case of", "if", and "if" and the like all refer to the device making corresponding processing under certain objective circumstances, and are not limited by time, and do not require the device to have a judgment action when implemented, nor does it mean that there are other limitations.

[0079] In the description of the embodiments of the present application, unless otherwise specified, " / " represents that the objects before and after the " / " are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone, wherein A and B can be singular or plural. And, in the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or the like means any combination of the items, including any combination of single item or multiple items. For example, at least one of a, b or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, and c can be single or multiple. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, "first", "second", etc. are used to distinguish the same items or similar items with basically the same function and role. The skilled in the art can understand that "first", "second", etc. do not limit the quantity and execution order, and "first", "second", etc. also do not limit the difference. At the same time, in the embodiments of the present application, "exemplary" or "for example" means to take an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, "exemplary" or "for example" is used to present the relevant concept in a specific way, for understanding.

[0080] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0081] Figure 4A flowchart of a communication method provided by an embodiment of the present application is shown. The communication method is applicable to the HCS system described above, and is mainly executed by a network device (such as a first network device) in the HCS system, or can also be executed by a chip configured in the network device. The network device can be various forms mentioned above. In addition, although the embodiments of the present application are described with respect to the network device, it can be understood that different functions in the method can be executed by different network devices, for example, different functions of a base station can be implemented by different network units, different operations in the embodiments of the present application can be implemented by different network units implementing different functions of the base station, and of course, can also be implemented by a certain network unit. The embodiments of the present application do not limit this, and these or the network unit are collectively referred to as a network device.

[0082] As shown in Figure 5 , the flow of the communication method is as follows:

[0083] S401, the first network device acquires a first time-frequency resource.

[0084] The first time-frequency resource can be a time-frequency resource used for performing sensing, and can include a time-frequency resource used for uplink communication and / or downlink communication in an FDD system.

[0085] As shown in Figure 6 , the FDD system is a system capable of simultaneously performing uplink communication and downlink communication. For example, for the first network device to communicate with a terminal, such as the first network device to communicate with UE#1, on the same time domain resource, a frequency domain resource (denoted as a first time-frequency resource set) is used for UE#1 uplink communication, and a frequency domain resource (denoted as a second time-frequency resource set) is used for UE#1 downlink communication. For example, the first network device communicates with UE#2, on the same time domain resource, a frequency domain resource (denoted as a third time-frequency resource set) is used for UE#2 uplink communication, and a frequency domain resource (denoted as a fourth time-frequency resource set) is used for UE#2 downlink communication. That is, UE#1 and UE#2 can use time-frequency resources for uplink transmission at the same time, and can also use time-frequency resources for downlink transmission to improve communication efficiency.

[0086] At this time, the first time-frequency resource can be understood as at least part of the first time-frequency resource set and / or the third time-frequency resource set, and / or at least part of the second time-frequency resource set and / or the fourth time-frequency resource set. That is, for sensing, the time-frequency resources of the same UE can be multiplexed, and the time-frequency resources of different UEs can also be multiplexed at the same time to achieve.

[0087] In addition, since the utilization rate of time-frequency resources of downlink communication is generally higher than that of time-frequency resources of uplink communication, the impact on the current frequency division duplex system is relatively small when the first time-frequency resource is a time-frequency resource configured for uplink communication in the FDD system, and therefore the first time-frequency resource can preferentially select to multiplex the time-frequency resource configured for uplink communication in the FDD system, such as the first time-frequency resource set and / or the third time-frequency resource set described above.

[0088] The above is an interpretation of the first time-frequency resource from the perspective of time-frequency resources used for uplink and / or downlink communication by different UEs. Correspondingly, the time-frequency resources used for uplink and / or downlink communication by different UEs can correspond to an uplink frequency band / downlink frequency band of a center frequency. At this time, the frequency domain resource in the first time-frequency resource can be understood as including a single unit frequency domain resource or a plurality of unit frequency domain resources with continuous frequency domain positions, or a plurality of unit frequency domain resources with non-continuous frequency domain positions. It can be understood that the frequency domain position of the first time-frequency resource can correspond to a single unit frequency domain resource, such as an uplink frequency band 890-915 MHz (25 MHz) with a center frequency of 900 MHz or a downlink frequency band 935-960 MHz (25 MHz) with a center frequency of 900 MHz. It can also be understood that the frequency domain position of the first time-frequency resource can correspond to a plurality of unit frequency domain resources, which can be a plurality of unit frequency domain resources that are continuous, such as a downlink frequency band 1427-1432 MHz (5 MHz) and a downlink frequency band 1432-1517 MHz (85 MHz). The plurality of unit frequency domain resources can also be a plurality of unit frequency domain resources that are non-continuous, such as a set of an uplink frequency band 890-915 MHz (25 MHz) with a center frequency of 900 MHz and an uplink frequency band 1920-1980 MHz (60 MHz) with a center frequency of 2.1 GHz, or even a set of uplink frequency bands corresponding to more different center frequencies, without limitation. Alternatively, the plurality of frequency domain resources can correspond to a set of downlink frequency bands corresponding to a plurality of center frequencies, such as a set of a downlink frequency band 935-960 MHz (25 MHz) with a center frequency of 900 MHz and a downlink frequency band 2110-2170 MHz (60 MHz) with a center frequency of 2.1 GHz, or even a set of downlink frequency bands corresponding to more different center frequencies, without limitation. In addition, it can also be a set of uplink frequency bands or downlink frequency bands of at least one or more other center frequencies, which will not be described here.

[0089] In addition, the uplink frequency band / downlink frequency band of each center frequency point can be understood as a carrier group, and correspondingly, each carrier group can be divided into multiple carriers, for example, the uplink frequency band 890-915MHz (25MHz) of the center frequency 900MHz can be divided into three carriers of 5MHz, 8MHz and 12MHz. Based on this, the frequency domain resource in the first time-frequency resource can correspond to at least one carrier in the uplink frequency band (i.e., a carrier group) of one center frequency point, and / or at least one carrier in the uplink frequency band (i.e., a carrier group) of at least one other center frequency point.

[0090] In the embodiments of the present application, the first network device can obtain the first time-frequency resource in the following manner: the protocol directly predefines that the first network device can use at least one or more specific frequency bands in the FDD system for sensing, that is, when the first network device has a sensing task requirement, the first network device directly uses the predefined frequency band for sensing. Alternatively, when the first network device has a sensing task requirement, the first network device checks whether there is an idle frequency band of the time-frequency resource used for uplink communication / downlink communication of the UE (such as the above-mentioned UE#1 and UE#2) to meet the bandwidth required by the sensing requirement, if the idle time-frequency resource can meet the sensing requirement, the first network device preferentially selects multiple continuous time-frequency resources, and if the idle time-frequency resource cannot meet the sensing requirement, the first network device can select multiple non-continuous time-frequency resources.

[0091] S402, the first network device uses the first time-frequency resource to perform a sensing operation.

[0092] The first network device uses the first time-frequency resource to transmit a sensing signal to the sensed target, and the first network device uses the first time-frequency resource to receive an electromagnetic feedback signal, i.e., a return signal, generated by the projection, scattering and reflection of the sensed target. The first network device obtains a sensing result of the sensed target according to the return signal of the sensed target, for example, the distance, angle, position, moving speed or size of the sensed target.

[0093] In summary, in the frequency division duplex system, the network device can use different frequency domain resources to respectively perform uplink transmission and downlink transmission on the same time domain resource. Based on this characteristic of the frequency division duplex system, the network device can still use the time-frequency resource for downlink communication to transmit downlink data when multiplexing the time-frequency resource for uplink communication for sensing, or the network device can still use the time-frequency resource for uplink communication to transmit uplink data when multiplexing the time-frequency resource for downlink communication for sensing, thereby avoiding the problem of communication interruption caused by sensing.

[0094] With the above method, in one possible design, in consideration of the interference between different frequency domain resources, if the first network device, when acquiring the first time-frequency resource, finds that the frequency domain resource of the neighboring cell is adjacent to the frequency domain location of the first time-frequency resource, for example, the second time-frequency resource is adjacent to the frequency domain location of the first time-frequency resource and has the same time domain location, and the second time-frequency resource is the time-frequency resource used by the second network device for uplink communication and / or downlink communication, then the frequency domain resource inside the first time-frequency resource adjacent to the first time-frequency resource and the second time-frequency resource can be set as a guard band; that is, the first network device can set the frequency domain resource inside the first time-frequency resource adjacent to the first time-frequency resource and the second time-frequency resource as a guard band.

[0095] The frequency domain location of the second time-frequency resource adjacent to the first time-frequency resource can be understood as, as shown in (a) of Figure 6 , the frequency domain location interval between the first time-frequency resource and the second time-frequency resource is less than or equal to 2 MHZ, that is, if the frequency domain location interval between the second time-frequency resource and the first time-frequency resource is greater than 2 MHZ, it is considered that when the second network device performs the communication operation on the second time-frequency resource and the first network device performs the sensing operation on the first time-frequency resource, there is no interference between them, and no guard band needs to be set. It can also be understood that, as shown in (b) of Figure 6 , the frequency domain location of the first time-frequency resource and the second time-frequency resource is adjacent, that is, there is no interval in the frequency domain location. The above two cases are only an example, and the recognition standard of the frequency domain location interval may change due to the performance of the hardware settings such as the antenna gain of different network devices, which is not limited here.

[0096] In addition, if the first time-frequency resource is not a continuous frequency domain resource as shown in (a) of Figure 6 or (b) of Figure 6 , but a non-continuous frequency domain resource, then any time-frequency resource contained in the first time-frequency resource has a frequency domain resource adjacent in frequency domain location, and the any time-frequency resource can set a guard band in the above manner, which is not described here.

[0097] The guard band can be directly selected as a frequency domain bandwidth of the order of 5 MHZ, 2 MHZ or 1 MHZ, and the frequency domain bandwidth of the guard band may also be related to the technical parameters of the first network device and the second network device, including the first network device transmit power, the first network device antenna gain, and the second network device transmit power, the second network device antenna gain, and the like.

[0098] Exemplarily, the frequency domain range of the first time-frequency resource is 663-702 MHZ, and the frequency domain range of the second time-frequency resource is 703-748 MHZ. At this time, the recognition standard for the frequency domain positions of the first time-frequency resource and the second time-frequency resource to be adjacent is that the frequency domain position interval is less than 2 MHZ. When the interval is less than 2 MHZ, when the second network device performs uplink communication and / or downlink communication on the second time-frequency resource, since the second network device only involves signal reception or transmission, whether it is uplink communication or downlink communication, the first network device performs perception operation on the first time-frequency resource, sends perception signals to the perceived target and receives echo signals emitted by the perceived target, which involves not only signal reception but also signal transmission. In this case, the difference between the first network device and the second network device in the signal transmission direction is different from the original agreement between the first network device and the second network device to only perform signal transmission or only perform signal reception on adjacent time-frequency resources so that there is no interference between them. This will cause mutual interference between the communication operation and the perception operation. In this case, if Figure 7 As shown in (c), the frequency domain resources within the first time-frequency resource on the adjacent side of the first time-frequency resource and the second time-frequency resource can be set as a protection band. For example, the frequency domain range of the first time-frequency resource is 700~702MHZ and is set as a protection band, that is, communication and perception operations are not performed on the time-frequency resource where the protection band is located.

[0099] Furthermore, considering that the first network device uses the first time-frequency resource to perform a sensing operation, specifically, the first time-frequency resource is mapped to a sending channel for sending a sensing signal and a receiving channel for receiving an echo signal, that is, the sending channel uses all the resources of the first time-frequency resource when sending a sensing signal, and the receiving channel uses all the resources of the first time-frequency resource when receiving an echo signal. Figure 7 As shown in (a) in FIG, if the second time-frequency resource is used by the second network device to perform downlink communication, then only the receiving channel of the first network device receiving the echo signal is inconsistent with the direction of the second network device transmitting the signal on the second time-frequency resource. In this case, only the receiving channel adjacent to the receiving channel receiving the echo signal and the second time-frequency resource needs to be set as a guard band, and the guard band does not need to receive the echo signal. Similarly, as Figure 8 As shown in (b), if the second time-frequency resource is used by the second network device to perform uplink communication, then only the sending channel for sending the perception signal by the first network device is inconsistent with the direction of the signal transmitted by the second network device on the second time-frequency resource. At this time, it is only necessary to set part of the receiving channel on the adjacent side of the sending channel for sending the perception signal and the second time-frequency resource as a protection band, and the protection band does not need to send the perception signal.

[0100] In combination with the above method, in a possible design scheme, the first time-frequency resource may include: a first time domain resource, a second time domain resource and a third time domain resource with the same frequency domain position and adjacent time domain position, and the first network device uses the first time-frequency resource to perform the perception operation.

[0101] It is understandable that the first network device can use at least one of the first time domain resources, the second time domain resources, and the third time domain resources in the first time-frequency resources to perform the sensing operation. In addition, the above division of the first time-frequency resources into the first time domain resources, the second time domain resources, and the third time domain resources is only an example. The first time-frequency resources can also be divided into the first time domain resources and the second time domain resources, or more divisions can be performed, which is not limited here. In addition, the lengths of the first time domain resources, the second time domain resources, and the third time domain resources can be the same or different, which is not limited here.

[0102] The granularity of the first time domain resources, the second time domain resources and the third time domain resources can be a radio frame, a frame, a sub-frame, a slot, a mini-slot, a symbol or time domain resources of any possible granularity, and there is no restriction on this.

[0103] Furthermore, considering the mutual impact of sensing and / or communication between resources with the same frequency domain location and adjacent time domain locations, a guard interval is set to ensure the reliability of communication and sensing. There are two specific cases, which are described below.

[0104] Case 1: If Figure 8 As shown in (a), if the second time domain resource is used by the first network device to perform a sensing operation, the first time domain resource and the third time domain resource are time-frequency resources used for uplink communication by other network devices within 1 km of the geographically adjacent location of the first network device (here, other network devices within 1 km of the geographically adjacent location are replaced by "network device M" below), and the internal time domain resource of the second time domain resource on the side adjacent to the third time domain resource can be set as a protection interval.

[0105] It can be understood that assuming the first time domain resource is time slot #1, the second time domain resource is time slot #2, and the third time domain resource is time slot #3, network device M performs uplink communication in time slot #1 and receives information from the terminal. The first network device performs a sensing operation in time slot #2, sends a sensing signal to the sensed target and receives an echo signal. Network device M performs uplink communication in time slot #3 and receives information from the terminal. However, when network device M performs uplink communication in time slot #3 and receives information from the terminal, there may be no gap between time slot #2 and time slot #3, and the sensing signal sent by the first network device to the sensed target has a propagation delay in the air. Therefore, network device M may mistakenly receive the sensing signal sent by the first network device to the sensed target when performing the sensing operation in time slot #2 in time slot #3. Based on this consideration, the internal time domain resource of the second time domain resource on the side adjacent to the third time domain resource can be set as a protection interval.

[0106] Case 2: If Figure 9 As shown in (b), if the second time domain resource is used by the first network device to perform a sensing operation, the first time domain resource and the third time domain resource are time-frequency resources used for downlink communication by other network devices within 1 km of the geographically adjacent location of the first network device (here, other network devices within 1 km of the geographically adjacent location are replaced by "network device M" below), and the internal time domain resource of the second time domain resource on the side adjacent to the third time domain resource can be set as a protection interval.

[0107] It can be understood that, assuming that the first time domain resource is time slot #1, the second time domain resource is time slot #2, and the third time domain resource is time slot #3, network device M performs downlink communication in time slot #1 and sends information to the terminal. The first network device performs a sensing operation in time slot #2, sends a sensing signal to the sensed target and receives an echo signal. Network device M performs downlink communication in time slot #3 and sends information to the terminal. However, when network device M performs downlink communication in time slot #1 and sends information to the terminal, there may be no gap between time slot #1 and time slot #2, and when network device M sends information to the terminal in time slot #1, the information sent has a propagation delay in the air. Therefore, when the first network device performs a sensing operation in time slot #2, it may mistakenly receive the information sent by network device M to the terminal in time slot #1. Based on this consideration, the internal time domain resource of the second time domain resource on the side adjacent to the third time domain resource can be set as a protection interval.

[0108] In addition, the other network devices that are geographically adjacent to the first network device within 1 kilometer are only an example. They may also be other network devices that are geographically adjacent to the first network device within 500 meters, or other geographically adjacent situations, which are not limited here.

[0109] In addition, the length of the guard interval is determined in relation to the technical parameters of the first network device and other network devices in the same frequency communication, including the transmission power of the first network device, the antenna gain of the first network device, and the distance between the first network device and other network devices in the same frequency communication.

[0110] For example, the length of the guard interval is generally a multiple of the length of the time domain symbol period, taking into account the interference level. For example, in the frequency domain of a 4G system, the physical bandwidth of a subcarrier is fixed at 15 KHz, and the length of the time domain symbol period is 66.67 us. Therefore, the length of the time domain guard interval includes at least a multiple of 66.67 us, and the length of the cyclic prefix can also be considered additionally. In addition, the physical bandwidth of the required subcarrier can be flexibly configured in different systems or scenarios, and the length of the time domain symbol period can also be flexibly changed.

[0111] Additionally, the first network device sends indication information to the second network device, which is a neighboring device of the first network device, and the indication information is used to indicate that the first network device performs sensing operation on the first time-frequency resource.

[0112] It can be understood that the network coverage ranges of the first network device and the second network device overlap to some extent, and they are neighboring devices. In general, the same frequency band is used in the overlapping area to ensure that mobile phones at different locations can receive signals and communicate. In this embodiment, when one of the network devices performs sensing operation on the first time-frequency resource, the other network device needs to mute the first time-frequency resource to avoid mutual interference when the other network device uses the first time-frequency resource for communication.

[0113] For example, the frequency band of the overlapping area of the network coverage ranges of the first network device and the second network device is 1427-1470 MHz. If the first network device performs sensing operation on the time-frequency resource at the frequency domain location of 1427-1470 MHz, the first network device can send indication information to the second network device to inform the second network device that it is performing sensing operation on the time-frequency resource at the frequency domain location of 1427-1470 MHz. To avoid mutual interference between sensing and communication, the second time-frequency resource can be muted and not perform sensing and communication operation.

[0114] Further, part of the frequency domain resources of the first time-frequency resource can be set as a guard band, and part of the time domain resources of the first time-frequency resource can be configured as a guard interval when the first time-frequency resource is divided into multiple time domain resources. The above two methods can be combined and set at the same time. The specific implementation is similar to the above and is not limited.

[0115] Furthermore, in the embodiment of the present application, the first network device obtains the first time-frequency resource, and the first network device uses the first time-frequency resource to perform a sensing operation. The first network device can also perform other simultaneous and same-frequency sending and receiving operations through the first time-frequency resource, such as RFID inventory and passive IOT inventory, which are not limited here.

[0116] Figure 1 This is a schematic diagram of the structure of the communication device provided in the embodiment of the present application. Figure 9 For example, Figure 9 As shown, the communication device 900 includes: a transceiver module 901 and a processing module 902. For ease of description, Figure 9 Only the main components of the communication device are shown.

[0117] The transceiver module 901 is used to perform the transceiver function of the above communication method, and the processing module 902 is used to perform other functions of the above communication method except the transceiver function.

[0118] Optionally, the transceiver module 901 may include a sending module ( Figure 9 Not shown) and receiving module ( Figure 9 (not shown in the figure). The sending module is used to implement the sending function of the communication device 900, and the receiving module is used to implement the receiving function of the communication device 900.

[0119] Optionally, the communication device 900 may further include a storage module ( Figure 3 When the processing module 902 executes the program or instruction, the communication device 900 can execute the above Figure 3 The functions of the network device in the method shown.

[0120] It can be understood that the communication device 900 can be a network device, a chip (system) or other parts or components that can be set in the network device, or a device that includes a network device. This application does not limit this.

[0121] In addition, the technical effects of the communication device 900 can be referred to Figure 10 The technical effects of the method shown will not be described in detail here.

[0122] Figure 2 Schematic diagram of the structure of the communication device provided in the embodiment of the present application Figure 10 For example, the communication device may be a network device, or a chip (system) or other component or assembly that can be provided in the network device. Figure 10As shown, the communication apparatus 1000 can include a processor 1001. Optionally, the communication apparatus 1000 can also include a memory 1002 and / or a transceiver 1003. The processor 1001 is coupled with the memory 1002 and the transceiver 1003, for example, through a communication bus.

[0123] The following will be described in detail Figure 10 The various constituent components of the communication apparatus 1000 will be described in detail:

[0124] The processor 1001 is the control center of the communication apparatus 1000, which can be one processor or a collective term of multiple processing elements. For example, the processor 1001 is one or more central processing units (CPUs), which can also be application specific integrated circuits (ASICs), or one or more integrated circuits configured to implement the embodiments of the present application, such as one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs).

[0125] Optionally, the processor 1001 can perform various functions of the communication apparatus 1000 by running or executing software programs stored in the memory 1002 and calling data stored in the memory 1002.

[0126] In a specific implementation, as an embodiment, the processor 1001 can include one or more CPUs, such as the CPU0 and CPU1 shown in Figure 10

[0127] In a specific implementation, as an embodiment, the communication apparatus 1000 can also include multiple processors, such as the processor 1001 and the processor 1004 shown in Figure 10 Each of these processors can be a single-CPU or a multi-CPU. Here, the processor can refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0128] The memory 1002 is used to store software programs for implementing the schemes of the present application, and is controlled by the processor 1001 to execute, and the specific implementation manner can refer to the above method embodiments, which will not be described here.

[0129] ​Alternatively, the memory 1002 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 1002 may be integrated with the processor 1001 or exist independently and accessed through the interface circuit ( Figure 10 (not shown) is coupled to the processor 1001, which is not specifically limited in this embodiment of the present application.

[0130] Transceiver 1003 is used for communication with other communication devices. For example, if communication device 1000 is a terminal, transceiver 1003 can be used to communicate with a network device or another terminal device. For another example, if communication device 1000 is a network device, transceiver 1003 can be used to communicate with a terminal or another network device.

[0131] Optionally, the transceiver 1003 may include a receiver and a transmitter ( Figure 10 (not shown separately in the figure). The receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0132] Optionally, the transceiver 1003 may be integrated with the processor 1001, or may exist independently and communicate with the processor 1001 through the interface circuit ( ​ (not shown) is coupled to the processor 1001, which is not specifically limited in this embodiment of the present application.

[0133] It is understandable that ​ The structure of the communication device 1000 shown in the figure does not constitute a limitation on the communication device. The actual communication device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0134] In addition, the technical effects of the communication device 1000 can refer to the technical effects of the method in the above method embodiment, and will not be repeated here.

[0135] It should be appreciated that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0136] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, and not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0137] The above-described embodiments can be implemented in part or in whole through software, hardware (e.g., circuitry), firmware, or any combination thereof. When implemented in software, the above-described embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When loaded and executed by a computer, the computer instructions or computer programs can generate the processes or functions described in the embodiments of the present application in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, such as from one website site, computer, server, or data center to another website site, computer, server, or data center through a wired (e.g., infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. containing one or more available medium collections. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium can be a solid-state disk.

[0138] It should be understood that the term "and / or" used herein is merely an association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it, but it can also represent an "and / or" relationship, which can be understood in the context before and after it.

[0139] In this application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions means any combination of the items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0140] It should be understood that in various embodiments of the present application, the size of the sequence number of the above-described processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0141] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0142] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0143] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0144] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0145] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0146] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts of the prior art that make contributions or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0147] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: The first network device acquires a first time-frequency resource, wherein the first time-frequency resource includes a time-frequency resource for uplink communication and / or downlink communication in a frequency division duplex system FDD; The first network device performs a sensing operation using the first time-frequency resource.

2. The method of claim 1, wherein, The frequency domain resources in the first time-frequency resources include a single unit frequency domain resource or a plurality of unit frequency domain resources with continuous frequency domain positions, or a plurality of unit frequency domain resources with non-continuous frequency domain positions.

3. The method according to claim 1 or 2, characterized in that, The unit frequency domain resource in the first frequency domain resource is at least one of the following: a carrier group or a carrier in a frequency domain allocated at a center frequency point.

4. The method according to any one of claims 1 to 3, characterized in that The second time-frequency resource is adjacent to the first time-frequency resource in frequency domain position and has the same time-domain position. The second time-frequency resource is a time-frequency resource used by the second network device for uplink communication and / or downlink communication.

5. The method according to claim 4, characterized in that Frequency domain resources within the first time-frequency resource on a side adjacent to the second time-frequency resource may be set as a guard band; The guard band is a time-frequency resource configured not to be used for communication or perception.

6. The method according to any one of claims 1-5, characterized in that, The first time-frequency resources include: a first time domain resource, a second time domain resource, and a third time domain resource with the same frequency domain position and adjacent time domain positions. The first network device uses the first time-frequency resources to perform a sensing operation.

7. The method according to claim 6, characterized in that If the second time domain resource is used to perform a sensing operation, the first time domain resource and the third time domain resource are time domain resources configured for uplink communication in a frequency division duplex system; The time domain resource inside the second time domain resource on the side adjacent to the third time domain resource may be set as a guard interval; The guard interval is a time domain resource configured not to be used for communication or sensing.

8. The method according to claim 6, characterized in that If the second time domain resource is used to perform a sensing operation, the first time domain resource and the third time domain resource are time domain resources configured for downlink communication in a frequency division duplex system; The inner time domain resource of the second time domain resource on the side adjacent to the first time domain resource may be set as a guard interval; The guard interval is a time domain resource configured not to be used for communication or sensing.

9. The method according to any one of claims 1 to 8, characterized in that The first network device sends indication information to the second network device, where the second network device is a neighboring device of the first network device, and the indication information is used to instruct the first network device to perform a sensing operation on the first time-frequency resource.

10. A communications device, characterized by The method comprises means for performing the method according to any one of claims 1 to 9.

11. A communications device, characterized by The device includes a processor coupled to a memory; the memory is used to store instructions, and when the processor executes the instructions, the device executes the method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer programs or instructions that, when executed, cause the method of any of claims 1-9 to be performed.

13. A computer program product, characterised in that, A computer program product comprising computer programs or instructions that, when executed, cause the method of any of claims 1-9 to be performed.

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