Method for identifying smart surface device, communication device and smart surface device

Abstract

The application discloses a kind of identification method of intelligent surface equipment, communication equipment and intelligent surface equipment, belong to wireless communication technical field, the identification method of intelligent surface equipment of the embodiment of the application, comprising: first communication equipment sends first signal;The first communication equipment obtains the identification information related to intelligent surface equipment, wherein the identification information is the information obtained by detecting the echo signal of the first signal by the first communication equipment, or the information obtained by detecting the echo signal of the first signal by second communication equipment and forwarding to the first communication equipment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wireless communication, and particularly relates to a method for identifying an intelligent surface device, a communication device and the intelligent surface device. BACKGROUND

[0002] In a wireless environment, the intelligent surface device is usually used as an auxiliary relay in a mobile communication system, constructs a controllable propagation channel, improves the wireless communication environment, and enhances the signal quality at the receiving end.

[0003] At present, in the use of the intelligent surface device, the position of the intelligent surface device relative to the base station is known, and the channel therebetween is a static or semi-static channel. However, for the case that the base station or the terminal does not know the existence of the intelligent surface device or the position of the intelligent surface device is unknown, there is no exact solution for the base station or the terminal to identify the intelligent surface device. SUMMARY

[0004] The embodiments of the present application provide a method for identifying an intelligent surface device, a communication device and the intelligent surface device, which can solve the problem of how to identify the intelligent surface device in the case that the intelligent surface device is unknown.

[0005] In a first aspect, a method for identifying an intelligent surface device is provided, which includes: a first communication device sending a first signal; and the first communication device acquiring identification information related to the intelligent surface device, wherein the identification information is information obtained by the first communication device detecting a backwave signal of the first signal, or information obtained by a second communication device detecting the backwave signal of the first signal and then forwarding to the first communication device.

[0006] In a second aspect, an identification device for an intelligent surface device is provided, which is applied to a first communication device, and includes: a sending module configured to send a first signal; and an acquiring module configured to acquire identification information related to the intelligent surface device, wherein the identification information is information obtained by the first communication device detecting a backwave signal of the first signal, or information obtained by a second communication device detecting the backwave signal of the first signal and then forwarding to the first communication device.

[0007] In a third aspect, a signal reflection method is provided, which includes: an intelligent surface device receiving a first signal sent by a first communication device; and the intelligent surface device reflecting the first signal in a specific reflection mode to send a backwave signal of the first signal.

[0008] In a fourth aspect, a signal reflection apparatus is provided, which is applied to a smart surface device, and the apparatus comprises: a receiving module configured to receive a first signal transmitted by a first communication device; and a reflecting module configured to reflect the first signal in a specific reflection mode to transmit a reflected signal of the first signal.

[0009] In a fifth aspect, a communication device is provided, which comprises a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0010] In a sixth aspect, a communication device is provided, which comprises a processor and a communication interface, wherein the processor is configured to implement the steps of the method according to the first aspect, and the communication interface is configured to communicate with an external communication device.

[0011] In a seventh aspect, a smart surface device is provided, which comprises a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the third aspect.

[0012] In an eighth aspect, a smart surface device is provided, which comprises a processor and a communication interface, wherein the processor is configured to implement the steps of the method according to the third aspect, and the communication interface is configured to communicate with an external communication device.

[0013] In a ninth aspect, a readable storage medium is provided, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the method according to the first aspect or the steps of the method according to the third aspect.

[0014] In a tenth aspect, a chip is provided, which comprises a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is configured to run a program or instructions to implement the steps of the method according to the first aspect or the steps of the method according to the third aspect.

[0015] In an eleventh aspect, a computer program / program product is provided, which is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to implement the steps of the method according to the first aspect or the steps of the method according to the third aspect.

[0016] In the embodiments of the present application, the first communication device transmits a first signal, the intelligent surface device receives and reflects a back signal of the first signal, and the identification information related to the intelligent surface device can be obtained by detecting the back signal through the first communication device or the second communication device, so that the intelligent surface device can be identified without knowing the intelligent surface device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A schematic diagram of a wireless communication system to which embodiments of the present application can be applied is shown.

[0018] Figure 2 A flowchart of an identification method of an intelligent surface device provided by embodiments of the present application is shown.

[0019] Figure 3 A schematic diagram of a probe signal and a back signal in embodiments of the present application is shown.

[0020] Figure 4 A schematic diagram of another probe signal and back signal in embodiments of the present application is shown.

[0021] Figure 5 A schematic diagram of a back signal monitoring time in embodiments of the present application is shown.

[0022] Figure 6 A schematic diagram of another back signal monitoring time in embodiments of the present application is shown.

[0023] Figure 7 A flowchart of a signal reflection method provided by embodiments of the present application is shown.

[0024] Figure 8 A schematic diagram of a back signal in embodiments of the present application is shown.

[0025] Figure 9 A structural schematic diagram of an identification device of an intelligent surface device provided by embodiments of the present application is shown.

[0026] Figure 10 A structural schematic diagram of a signal reflection device provided by embodiments of the present application is shown.

[0027] Figure 11 A structural schematic diagram of a communication device provided by embodiments of the present application is shown.

[0028] Figure 12 A hardware structural schematic diagram of a terminal provided by embodiments of the present application is shown.

[0029] Figure 13 A hardware structural schematic diagram of a network side device provided by embodiments of the present application is shown. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0031] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the front and rear associated objects are in an "or" relationship.

[0032] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, and also in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as 6 th Generation (6G) communication systems.

[0033] Figure 1A schematic diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11, a wireless auxiliary device 13 and a network side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc. The wearable device includes a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP) or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term. The wireless auxiliary device 13 can be a large intelligent surface (LIS) device, or can be a reconfigurable intelligent surface (RIS) device, or can be a passive intelligent surface device or an active intelligent surface device, or can be a combination of active and passive intelligent surface devices, or can be a layer one (L1) relay device, or can be an L1 repeator, or a backscatter. The large intelligent surface device is also referred to as an intelligent reflected surface, an intelligent metasurface, a programmable / reconfigurable metasurface, etc. The intelligent surface device can or can not have a beamforming function.

[0034] In the embodiments of the present application, the terminal 11 or the network side device 12 can have a communication and perception integrated function. Among them, the communication and perception integration refers to the integration design of communication and perception functions through spectrum sharing and hardware sharing in the same system. The system can perceive information such as direction, distance, and speed while transmitting information, detect, track, and identify target devices or events, and the communication system and the perception system complement each other to improve the overall performance and bring better service experience.

[0035] The integration of communication and radar belongs to a typical communication and perception fusion application. In the past, radar systems and communication systems were strictly distinguished due to different research objects and focuses, and the two systems were developed separately in most scenarios. In fact, radar and communication systems are also typical ways of information sending, obtaining, processing, and exchanging, and there are many similarities in working principles, system architectures, and frequency bands. The design of communication and radar integration has great feasibility, mainly in the following aspects: first, both communication systems and perception systems are based on electromagnetic wave theory and use electromagnetic wave transmission and reception to obtain and transmit information; second, both communication systems and perception systems have structures such as antennas, sending ends, receiving ends, and signal processors, and there is a great overlap in hardware resources; with the development of technology, there are more and more overlaps in working frequency bands; in addition, there are similarities in signal modulation, reception detection, waveform design, and other key technologies. The integration of communication and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, spectrum efficiency improvement, mutual interference reduction, and overall system performance improvement.

[0036] Because radar and communication systems are also typical ways of information sending, obtaining, processing, and exchanging, there are many similarities in working principles, system architectures, and frequency bands. Therefore, the design of communication and radar integration can be realized. In related technologies, the integration design of radar and communication systems includes spectrum coexistence, that is, the two systems work independently and can allow information exchange to reduce mutual interference; receiver sharing, in which the two systems transmit their own signal waveforms, and the waveforms of the two systems need to be orthogonal to not affect their respective reception detection; transmitter sharing, in which the transmitter transmits a joint waveform of radar and communication; and transceiver sharing, in which the two systems share resources on both sides of the transceiver, and also need to use a joint waveform or a waveform with an orthogonal relationship.

[0037] The radar sensing function is introduced into the mobile communication system. When sensing, it can be single-station mode-based sensing, i.e., co-sited transmission and reception, the sending end transmits a sensing signal, and then itself receives a return signal and analyzes it to extract sensing parameters, for example, a base station as the sending end and receiving end of the sensing signal, and a terminal or other object as the sensing target. It can also be double-station / multi-station mode-based sensing, i.e., non-co-sited transmission and reception, the sending end transmits a sensing signal, and other receiving ends receive and analyze it to extract sensing parameters, for example, a base station A as the sending end of the sensing signal, and a terminal or a base station B as the receiving end of the sensing signal.

[0038] It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0039] The identification scheme of the intelligent surface device provided by the embodiments of the present application will be described in detail below in combination with the drawings and some embodiments and application scenarios.

[0040] Figure 2 A flowchart of an identification method of an intelligent surface device in the embodiments of the present application is shown. The method 200 can be executed by a first communication device. In other words, the method can be executed by software or hardware installed on the first communication device. As shown in Figure 2 The method can include the following steps.

[0041] S210, the first communication device transmits a first signal.

[0042] In the embodiments of the present application, the first communication device can be a base station or a terminal. The first communication device can have a radar sensing function.

[0043] In the embodiments of the present application, the first signal can be a probe signal. For example, when the first communication device needs to know whether there is an intelligent surface device in the surrounding environment, it can send a probe signal to the surrounding environment.

[0044] In the embodiments of the present application, the first signal can include one of the following:

[0045] (1) a sensing signal for implementing a sensing function. For example, the first signal is a signal for sensing a target object, event or environment, for example, a radar signal such as a pulse signal or a frequency-modulated continuous wave signal.

[0046] (2) a communication signal for transmitting information. That is, the first signal is a signal only for information transmission between transmission and reception. For example, a synchronization signal / physical broadcast channel signal block (or synchronization signal block) (Synchronization Signal and PBCH block, SSB), etc.

[0047] (3) a communication and sensing integrated signal for realizing a sensing function and transmitting information. That is, the first signal is a signal that can be used for communication or for realizing a sensing function.

[0048] In the embodiments of the present application, the first communication device can transmit the first signal by beam scanning, or simultaneously transmit multiple beams, or transmit in an omnidirectional manner. For example, the first communication device can transmit the first signal by beam scanning according to a set of beam angles {α1, α2, α3,…, αn}, that is, transmitting beams in different directions at different times.

[0049] In the embodiments of the present application, the first communication device can transmit the first signal by beam scanning, or simultaneously transmit multiple beams, or transmit in an omnidirectional manner. For example, the first communication device can transmit the first signal by beam scanning according to a set of beam angles {α1, α2, α3,…, αn}, that is, transmitting beams in different directions at different times.

[0050] In the embodiments of the present application, the smart surface device will reflect the first signal after receiving the first signal, that is, transmit a backwave signal of the first signal. By taking advantage of the characteristics of the smart surface device that can increase or control the backwave, the smart surface device can be identified by monitoring the backwave signal transmitted by the smart surface device in the current communication environment of the first communication device.

[0051] In one possible implementation of the embodiments of the present application, in order to enable the smart surface device to reflect the first signal, a control command can be included in the first signal, wherein the control command is used to control the reflection mode of the smart surface device reflecting the first signal. That is, the reflection mode of the smart surface device reflecting the first signal is controlled by the control command. For example, the angle of the smart surface device reflecting the first signal can be controlled. Alternatively, the control command can be associated with at least one angle in a set of pre-set beam forwarding angles of the smart surface device. In this possible implementation, the control command of the signal reflection mode (also referred to as the forwarding mode) of the smart surface device in the first signal transmitted by the first communication device each time is associated with at least one angle in the set of pre-set beam forwarding angles of the smart surface device.

[0052] For example, when the first signal is a communication signal for transmitting information or a communication and sensing integrated signal for realizing a sensing function and transmitting information, the control command can be included in the first signal.

[0053] In another possible implementation, the first communication device can send a first trigger signal, where the first trigger signal is used to trigger the smart surface device to adopt a specific reflection mode. Through this possible implementation, the first trigger signal can be used to trigger the smart surface device to adopt a specific reflection mode, so that the smart surface device can reflect the first signal in a predetermined manner.

[0054] In a specific application, when the first communication device transmits the first trigger signal, it can be transmitted in an omnidirectional manner, or in a beam sweeping manner according to a set of beam angles {α1, α2, α3,…, αn}, i.e., beams are transmitted in different directions at different times, or in a multi-beam transmission manner, etc.

[0055] Optionally, the first trigger signal is included in the first signal. For example, when the first signal is a communication signal for transmitting information or a communication and perception integrated signal for realizing perception functions and transmitting information, the first trigger signal can be included in the first signal. For example, the first communication device can carry the first trigger signal in the first signal when transmitting the first signal for the first time or the first signal for the first few times.

[0056] Optionally, the first communication device can send the first trigger signal in a broadcast manner to trigger the specific reflection mode of the smart surface device.

[0057] In one possible implementation, to ensure security, the first communication device can also include identity indication information in the first signal, where the identity indication information is used to indicate the identity of the first communication device. The smart surface device can determine whether the first communication device is a legal device according to the identity indication information, i.e., whether the first signal is a legal probe signal. For example, the communication signal for transmitting information or the communication and perception integrated signal for realizing perception functions and transmitting information includes specific identity information of the base station or the terminal, etc. When the smart surface device does not identify valid indication information, it does not perform effective reflection of the signal. For example, the probe signal transmitted by the base station or the terminal contains a previously agreed signal format, and the smart surface device determines whether it is a legal probe signal containing the identity validity indication information of the base station or the terminal by monitoring and detecting the received signal. For another example, the communication signal or the communication and perception integrated signal transmitted by the base station or the terminal contains a training sequence associated with the identity information of the base station or the terminal, and the smart surface device determines whether it is a legal probe signal by matching filtering to determine whether the peak value exceeds a threshold.

[0058] In yet another possible implementation, the default reflection mode of the intelligent surface device can be the specific reflection mode. In this possible implementation, in order to enable the intelligent surface device to normally perform the forwarding work after identification, after S212, the method can further include: the first communication device sending first indication information to the intelligent surface device, where the first indication information indicates the intelligent surface device to exit the specific reflection mode, and the specific reflection mode is the default reflection mode of the intelligent surface device. That is, in this possible implementation, the default configuration and / or pre-configuration of the intelligent surface device is the specific reflection mode, that is, when there is no signal forwarding behavior (that is, there is no associated service base station or terminal), the intelligent surface device forwards the signal according to the default configuration, and after the base station or terminal completes identification, the setting of indicating it to stop using the default forwarding mode.

[0059] In one possible implementation, the specific reflection mode can include one of the following:

[0060] (1) a first reflection mode, where in the first reflection mode, the intelligent surface device reflects the received signal at an angle in a pre-set beam forwarding angle set. In this possible implementation, the variation range from the minimum angle to the maximum angle in the beam forwarding angle set contains the reflection angle corresponding to the incident angle, that is, the azimuth angle where the transmitter is located, or the azimuth angle where the potential receiver is located. That is, the intelligent surface device reflects according to the pre-set forwarding beam angle set {θ1, θ2, θ3,…, θn}, assuming that θ1< θ2< θ3<…< θn, and the reflection angle α corresponding to the incident angle satisfies the relationship θ1≤ α ≤ θn.

[0061] In the first reflection mode, one first signal can correspond to each angle in the beam forwarding angle set, that is, for one first signal, the intelligent surface device iteratively reflects at the angles in the beam forwarding angle set. In this case, the first duration of the single first signal sent by the first communication device is at least greater than the total mode switching time required by the intelligent surface device to iterate through each angle in the beam forwarding angle set. In this possible implementation, after the intelligent surface device receives the first signal (for example, a probe pulse signal), it iteratively reflects according to the angles in the angle set within the duration of the single first signal, as shown in Figure 3

[0062] ​Alternatively, in the first reflection mode, one of the first signals corresponds to one of the set of beam-reflection angles, i.e., for one first signal, the intelligent surface device reflects at one of the set of beam-reflection angles. In this case, the first communication device transmits at least more first signals using the same angle and / or the same beam direction than the number of angles in the set of beam-reflection angles. In this possible implementation, as Figure 4 illustrated in FIG. 7, the intelligent surface device reflects at one of the set of angles for the duration of a single pulse signal (i.e., a first signal), in this possible implementation, the first communication device transmits at least as many pulse signals per direction as there are elements in the set of preset angles of the intelligent surface. Alternatively, the intelligent surface device can reflect at one of the set of angles for the duration of multiple pulse signals (i.e., first signals), i.e., one reflection angle corresponds to multiple pulse signals, facilitating the first communication device to perform echo pulse accumulation detection and improve detection performance. In this case, the first communication device transmits at least as many pulse signals per direction as the product of the number of elements in the set of preset angles of the intelligent surface and the number of pulse signals corresponding to each angle.

[0063] In the above case, to ensure that the first communication device can listen to the echo signals corresponding to each first signal, the first communication device transmits the next first signal using the same angle and / or the same beam direction at a starting time later than the end time of the listening of the echo of the previous first signal.

[0064] (2) The second reflection mode, in which, in the second reflection mode, the intelligent surface device reflects the received signals using the angle corresponding to the incoming wave direction. That is, in this possible implementation, the intelligent surface device can form a forwarding beam according to the incoming wave direction to reflect all signals, in this possible implementation, the intelligent surface device can contain an active unit, through which the AoA estimation can be performed to obtain the incoming wave direction of the first signal.

[0065] In one possible implementation, after the first communication device transmits the first signal, it can listen to the echo signal of the first signal, wherein the second duration of listening can be determined according to the maximum detection distance of the first communication device and / or the first duration of transmitting a single first signal. For example, for the reflection mode illustrated in FIG. 6, the first communication device can determine the second duration of listening according to the maximum detection distance Dmax, and for the reflection mode illustrated in FIG. 7, the first communication device can determine the second duration of listening according to the first duration of transmitting a single first signal. Figure 4 Figure 3 ​According to the reflected mode shown, the first communication device can determine the second duration of listening according to the first duration of the first signal. Alternatively, the first communication device can also determine the second duration according to the maximum detection distance and the first duration, for example, the second duration T1 and the maximum detection distance Dmax satisfy the following relationship with the first signal duration T:

[0066] T1≥2Dmax / c+T, where c is the speed of light.

[0067] In one possible implementation, after the first communication device listens to the echo signal of the first signal, it can determine whether there is a smart surface device in the transmission angle and / or beam direction of the first signal according to the strength of the listened echo signal. For example, by judging whether there is a smart surface in the current beam direction through the relationship between the received signal strength indication (RSSI) or the correlation peak after correlation of the echo and the threshold, if the RSSI or the correlation peak exceeds the threshold, it is considered that there is a smart surface device in the transmission direction and / or beam direction of the first signal, otherwise it is considered that there is no smart surface device in the transmission direction and / or beam direction of the first signal.

[0068] For example, if the first communication device is in full-duplex mode, the listening starting time can be at least from the sending of the probe signal, such as Figure 5 As shown, the first communication device starts to listen to the echo signal from the starting time of the pulse probe signal transmitted in a specific direction a1. Of course, it is not limited thereto, the first communication device can determine the latest time when it starts to receive the echo signal according to its maximum detection distance Dmax, then as long as it starts to listen before that time, it is feasible, which is not limited in the embodiments of the present application.

[0069] If the first communication device is in half-duplex mode, as shown in Figure 6 The listening starting time can be at least from the completion of sending the probe signal. Of course, it is not limited thereto, the first communication device can determine the latest time when it starts to receive the echo signal according to its maximum detection distance Dmax, then as long as it starts to listen before that time, it is feasible, which is not limited in the embodiments of the present application.

[0070] In a possible implementation of the embodiment of the present application, when reflecting the first signal, the intelligent surface device can also change the characteristic information of the first signal according to the first rule to indicate the identity information thereof in the echo signal. Therefore, in the possible implementation, the first communication device obtaining the identification information can further include: detecting, by the first communication device, the characteristic information of the echo signal, and identifying the identity information of the intelligent surface device according to a detection result, wherein the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information. Further, the first communication device can also obtain information such as distance, moving speed, and angle of the corresponding intelligent surface device through analysis of the echo signal.

[0071] In a possible implementation, the first communication device can also cooperate with the second communication device to identify the intelligent surface device. In the possible implementation, the first communication device obtaining the identification information includes:

[0072] The first communication device sends second indication information to the second communication device, wherein the second indication information includes at least one of the following: an indication of starting echo monitoring and a format of the first signal; and the first communication device receives the identification information sent by the second communication device, wherein the identification information is obtained by the second communication device monitoring and analyzing the echo signal of the first signal, and the identification information includes third indication information used to indicate whether there is an intelligent surface device in the transmission angle and / or beam direction of the first signal.

[0073] In a specific application, after receiving the second indication information sent by the first communication device, the second communication device can monitor and analyze the echo signal of the first signal in the same way as the first communication device to obtain the identification information, which will not be described herein again.

[0074] Optionally, the identification information returned by the second communication device can also include the identity information of the intelligent surface device.

[0075] In a possible implementation, the second communication device can also only return the relevant information of the echo signal of the first signal monitored by the second communication device to the first communication device, and the first communication device analyzes the relevant information of the echo signal to obtain the identification information.

[0076] In the possible implementation manner, the second communication device can return the identification information corresponding to the echo signal of one first signal to the first communication device after listening to the echo signal of the first signal. Alternatively, the first communication device can indicate the format of the first signal in the second indication information, where the format of the first signal includes at least one of the following: the waveform of the first signal, sequence information, a transmission angle, and a beam direction. Optionally, the identification information returned by the second communication device can further include a target transmission angle and / or a target beam direction, where the target transmission angle and / or the target beam direction are the transmission angle and / or the beam direction of the first signal corresponding to the echo signal. In this case, the second communication device can return the identification information corresponding to multiple first signals to the first communication device after listening to and analyzing the echo signals of the multiple first signals.

[0077] In the embodiments of the present application, the second communication device can be a base station or a terminal, and the specific embodiments of the present application are not limited.

[0078] For example, the base station A sends indication information to the base station B, which can include a start echo listening indication, a format of a transmitted probe signal, and the like. The base station B receives the indication information of the base station A and starts listening. The base station A transmits a first trigger signal to the surrounding environment (optionally). The base station A transmits a probe signal to the surrounding environment. The intelligent surface device works in a specific reflection mode to reflect the probe signal. The base station B receives and analyzes the echo characteristics to determine whether there is an intelligent surface device in the transmission direction and / or the transmission beam direction of the probe signal transmitted by the base station A, and further can obtain intelligent surface identity information. The base station B feeds back information to the base station A, which at least includes an indication information of whether there is an intelligent surface device in the transmission direction and / or the transmission beam direction of the probe signal transmitted by the base station A, and can further include identity indication information of the intelligent surface device, and the like.

[0079] For example, the base station sends indication information to the terminal, which can include a start echo listening indication, a format of a transmitted probe signal, and the like. The terminal receives the indication information of the base station and starts listening. The base station transmits a first trigger signal to the surrounding environment (an optional step). The base station transmits a probe signal to the surrounding environment. The intelligent surface device works in a specific reflection mode to reflect the probe signal. The terminal receives and analyzes the echo characteristics to determine whether there is an intelligent surface device in the transmission direction and / or the transmission beam direction of the probe signal transmitted by the base station, and further can obtain intelligent surface identity information. The terminal feeds back information to the base station, which at least includes an indication information of whether there is an intelligent surface device in the transmission direction and / or the transmission beam direction of the probe signal transmitted by the base station, and can further include identity indication information of the intelligent surface device, and the like.

[0080] By means of the technical solutions provided in the embodiments of the present application, when a base station or a terminal has radar perception function, the surrounding environment of the intelligent surface device can be detected and identified by using the echo signal.

[0081] Figure 7 A flowchart of a signal reflection method in the embodiments of the present application is shown, and the method 700 can be executed by an intelligent surface device. In other words, the method can be executed by software or hardware installed on the intelligent surface device. As shown in the figure, the method can include the following steps. Figure 7

[0082] S710, the intelligent surface device receives a first signal sent by a first communication device.

[0083] The first signal is the same as the first signal in the method 200, and specific descriptions can be referred to the related descriptions in the method 200, which will not be repeated here.

[0084] In the embodiments of the present application, the first communication device can send the first signal in the manner described in the method 200, and specific descriptions can be referred to the related descriptions in the method 200, which will not be repeated here.

[0085] S712, the intelligent surface device reflects the first signal in a specific reflection mode to send an echo signal of the first signal.

[0086] In one possible implementation, before S712, the method can further include: receiving, by the intelligent surface device, a first trigger signal sent by the first communication device, and setting a reflection mode of the intelligent surface device to the specific reflection mode.

[0087] Optionally, the first trigger signal can be contained in the first signal.

[0088] In another possible implementation, before S712, the method can further include: entering, by the intelligent surface device, the specific reflection mode when there is no signal forwarding behavior, wherein the specific reflection mode is a default reflection mode of the intelligent surface device. That is, in this possible implementation, the intelligent surface device works in the specific reflection mode by default.

[0089] Optionally, in the above possible implementation, after the intelligent surface device reflects the first signal in the specific reflection mode, the method can further include: receiving first indication information sent by the first communication device, wherein the first indication information indicates that the intelligent surface device exits the specific reflection mode; and stopping using the specific reflection mode according to the indication of the first indication information.

[0090] ​In a possible implementation, before S712, the method can further include: determining identity indication information contained in the first signal, and the identity indicated by the identity indication information being legitimate. For example, the first signal transmitted by the first communication device contains a pre-agreed signal format, and the smart surface device determines that the first communication device is legitimate. For another example, the first communication device includes a training sequence associated with identity information of the first communication device in the first signal, and the smart surface device determines that the first signal includes the training sequence by matching filtering to detect whether a peak value exceeds a threshold, and is consistent with a predetermined training sequence.

[0091] In a possible implementation, the specific reflection mode includes:

[0092] a first reflection mode, in which the smart surface device reflects a received signal at an angle in a pre-configured set of beam forwarding angles; or

[0093] a second reflection mode, in which the smart surface device reflects a received signal at an angle corresponding to a direction of arrival.

[0094] In a possible implementation, the smart surface device reflects the first signal in the specific reflection mode, including one of the following:

[0095] (1) The smart surface device obtains a direction of arrival of the first signal, and reflects the first signal at an angle corresponding to the direction of arrival; for example, the smart surface device reflects the signal in a forwarding beam formed according to the direction of arrival. In this possible implementation, the smart surface device contains an active unit and can perform AoA estimation.

[0096] (2) The smart surface device iteratively reflects each angle in the set of beam forwarding angles for a received first signal; that is, in this possible implementation, the angle of reflection of the first signal is iteratively reflected according to the angles in the angle set during the duration of a single first signal after receiving the first signal, as shown in FIG. 2B. Figure 3

[0097] (3) The smart surface device reflects at least one first signal using an angle in the set of beam forwarding angles. That is, the smart surface device reflects according to an angle in the set of beam forwarding angles during the duration of a single first signal (for example, a pulse signal), as shown in FIG. 2C. Figure 4

[0098] For details, refer to the related description in the method 200, which will not be repeated here.​​

[0099] In another possible implementation, the first signal can include a command for controlling a reflection mode of the intelligent surface device. In this possible implementation, the reflection of the first signal by the intelligent surface device in the specific reflection mode includes: the intelligent surface device reflecting the first signal in a reflection mode corresponding to the control command included in the first signal according to the control command, wherein the angle at which the intelligent surface device reflects the first signal is at least one angle in a set of pre-set beam forwarding angles associated with the control command. That is, the intelligent surface device can reflect the first signal at at least one angle associated with the control command. That is, the intelligent surface receives a control command of a signal reflection mode (i.e., a forwarding mode) from the first communication device, and works in a corresponding reflection mode, each reflection angle being associated with a control command of a signal forwarding pattern carried by the first signal from the base station.

[0100] In one possible implementation, the reflection of the first signal by the intelligent surface device in the specific reflection mode includes: the intelligent surface device reflecting the first signal by changing characteristic information of the first signal according to a first rule, wherein the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information. For example, taking the second reflection mode of the intelligent surface device as an example, as shown in Figure 8 , the intelligent surface device can change the amplitude of the probe signal to embed the identity information of the intelligent surface device, wherein, in Figure 8 , the first communication device works in a half-duplex mode.

[0101] It should be noted that the intelligent surface device identification method provided in the embodiments of the present application can be executed by an intelligent surface device identification apparatus or a control module in the intelligent surface device identification apparatus for executing the intelligent surface device identification method. In the embodiments of the present application, the intelligent surface device identification apparatus executes the intelligent surface device identification method as an example to illustrate the intelligent surface device identification apparatus provided in the embodiments of the present application.

[0102] Figure 9 A structure diagram of an intelligent surface device identification apparatus provided in the embodiments of the present application is shown, which can be applied to a first communication device. As shown in Figure 9 , the apparatus 900 mainly includes a sending module 901 and an obtaining module 902.

[0103] In the embodiments of the present application, the sending module 901 is configured to send a first signal; and the obtaining module 902 is configured to obtain identification information related to the intelligent surface device, wherein the identification information is information obtained by detecting a backwave signal of the first signal by the first communication device, or information obtained by detecting the backwave signal of the first signal by the second communication device and then forwarded to the first communication device.

[0104] In a possible implementation, the first signal includes one of the following:

[0105] a perception signal used to implement a perception function;

[0106] a communication signal used to transmit information;

[0107] a communication-perception integrated signal used to implement a perception function and transmit information.

[0108] In a possible implementation, the first signal includes a control command, wherein the control command is used to control a reflection mode of the intelligent surface device for reflecting the first signal.

[0109] In a possible implementation, the sending module 901 is further configured to:

[0110] send a first trigger signal, wherein the first trigger signal is used to trigger the intelligent surface device to adopt a specific reflection mode.

[0111] In a possible implementation, the sending module 901 is further configured to:

[0112] after the first communication device obtains the identification information, send first indication information to the intelligent surface device, wherein the first indication information indicates the intelligent surface device to exit a specific reflection mode, and the specific reflection mode is a default reflection mode of the intelligent surface device.

[0113] In a possible implementation, the first signal includes identity indication information, wherein the identity indication information is used to indicate the identity of the first communication device.

[0114] In a possible implementation, the specific reflection mode includes:

[0115] a first reflection mode, wherein in the first reflection mode, the intelligent surface device reflects a received signal by using an angle in a pre-set set of beam forwarding angles; or

[0116] a second reflection mode, wherein in the second reflection mode, the intelligent surface device reflects a received signal by using an angle corresponding to a wave direction.

[0117] In a possible implementation, the first communication device or the second communication device monitors the echo signal of the first signal, including:

[0118] The first communication device or the second communication device determines a second duration of monitoring the echo signal according to the maximum detection distance and / or a first duration of transmitting a single first signal;

[0119] The echo signal is monitored within the second duration.

[0120] In a possible implementation, if the intelligent surface device adopts a first reflection mode, and one first signal corresponds to each angle of the set of beam forwarding angles, the first duration of transmitting a single first signal by the sending module 901 is at least greater than the total mode switching time required by the intelligent surface device to traverse each angle of the set of beam forwarding angles.

[0121] In a possible implementation, if the intelligent surface device adopts a first reflection mode, and one first signal corresponds to one angle of the set of beam forwarding angles, the number of first signals transmitted by the sending module 901 using the same angle and / or the same beam direction is at least greater than the number of angles in the set of beam forwarding angles.

[0122] In a possible implementation, the starting moment of the next first signal transmitted by the sending module 901 using the same angle and / or the same beam direction is later than the ending moment of the echo monitoring of the previous first signal.

[0123] In a possible implementation, the obtaining module 902 obtains identification information, including:

[0124] After transmitting the first signal, the echo signal of the first signal is monitored, and whether there is an intelligent surface device at the transmission angle and / or the beam direction of the first signal is determined according to the strength of the monitored echo signal.

[0125] In a possible implementation, the obtaining module 902 obtains identification information, further including:

[0126] The characteristic information of the echo signal is detected, and the identity information of the intelligent surface device is identified according to the detection result, wherein the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

[0127] In a possible implementation, the obtaining module 902 obtains identification information, including:

[0128] sending second indication information to the second communication device, wherein the second indication information at least includes one of the following: an indication of starting echo monitoring, and a format of the first signal;

[0129] receiving the identification information sent by the second communication device, wherein the identification information is obtained by the second communication device by monitoring and processing the echo signal of the first signal, and the identification information includes third indication information, which is used to indicate whether there is an intelligent surface device in the transmission angle and / or beam direction of the first signal.

[0130] The identification apparatus of the intelligent surface device in the embodiments of the present application can be an apparatus, or a component, an integrated circuit, or a chip in a terminal or a base station. The terminal can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the like, which are not limited in the embodiments of the present application. The base station can include, but is not limited to, the types of the base station listed above.

[0131] The identification apparatus of the intelligent surface device in the embodiments of the present application can be an apparatus with an operating system. The operating system can be an Android operating system, an ios operating system, or other possible operating systems, which are not limited in the embodiments of the present application.

[0132] The identification apparatus of the intelligent surface device provided in the embodiments of the present application can implement each process of the method embodiments of the first communication device, and achieve the same technical effects. To avoid repetition, details are not described herein. Figures 2 to 8 The identification apparatus of the intelligent surface device provided in the embodiments of the present application can implement each process of the method embodiments of the first communication device, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0133] Figure 10 A structure schematic diagram of a signal reflection apparatus provided in the embodiments of the present application is shown, the apparatus 1000 is applied to an intelligent surface device, as shown in the figure, the apparatus 1000 mainly includes a receiving module 1001 and a reflection module 1002. Figure 10

[0134] In the embodiments of the present application, the receiving module 1001 is configured to receive a first signal sent by a first communication device, and the reflection module 1002 is configured to reflect the first signal in a specific reflection mode to send an echo signal of the first signal.

[0135] In one possible implementation, the first signal includes one of the following:​

[0136] a perception signal for implementing a perception function;

[0137] a communication signal for transmitting information;

[0138] a communication-perception integrated signal for implementing a perception function and transmitting information.

[0139] In a possible implementation, the receiving module 1001 is further configured to:

[0140] Before the reflecting module 1002 reflects the first signal in the specific reflection mode, the receiving module 1001 receives a first trigger signal sent by the first communication device, and sets the reflection mode of the intelligent surface device to the specific reflection mode.

[0141] In a possible implementation, the apparatus further includes:

[0142] The setting module is configured to set the reflection mode of the intelligent surface to the specific reflection mode when the intelligent surface device is in a signal non-forwarding behavior, where the specific reflection mode is a default reflection mode of the intelligent surface device.

[0143] In a possible implementation, the receiving module 1001 is further configured to receive first indication information sent by the first communication device, where the first indication information indicates exiting the specific reflection mode; and the setting module is further configured to stop using the specific reflection mode according to the indication of the first indication information.

[0144] In a possible implementation, the reflecting module 1002 reflects the first signal in the specific reflection mode, and includes:

[0145] According to a control command included in the first signal, the reflecting module 1002 reflects the first signal in a reflection mode corresponding to the control command, where an angle at which the intelligent surface device reflects the first signal is at least one angle associated with the control command in a pre-set beam forwarding angle set.

[0146] In a possible implementation, the apparatus further includes:

[0147] The determining module is configured to determine identity indication information contained in the first signal before reflecting the first signal, and the identity indication information indicates that the identity of the first communication device is legitimate.

[0148] In a possible implementation, the specific reflection mode includes:

[0149] a first reflection mode, in which the intelligent surface device reflects a received signal using an angle in a preconfigured set of beam-reflection angles; or

[0150] a second reflection mode, in which the intelligent surface device reflects a received signal using an angle corresponding to a direction of arrival.

[0151] In one possible implementation, the reflection module 1002 reflects the first signal in a specific reflection mode, including one of the following:

[0152] obtaining a direction of arrival of the first signal, and reflecting the first signal using an angle corresponding to the direction of arrival;

[0153] iteratively reflecting, for a received one of the first signals, according to each angle in the set of beam-reflection angles;

[0154] reflecting, for at least one of the received first signals, using an angle in the set of beam-reflection angles.

[0155] In one possible implementation, the reflection module 1002 reflects the first signal in a specific reflection mode, including:

[0156] reflecting by changing characteristic information of the first signal according to a first rule, where the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

[0157] The signal reflection apparatus provided by the embodiments of the present application can implement Figures 2 to 8 the various processes of the intelligent surface device in the method embodiments, and achieve the same technical effects. To avoid repetition, the various processes will not be described here again.

[0158] Optionally, as Figure 11 shown, the embodiments of the present application further provide a communication device 1100, which includes a processor 1101, a memory 1102, a program or instruction stored in the memory 1102 and executable on the processor 1101. For example, when the communication device 1100 is a first communication device, the program or instruction, when executed by the processor 1101, implements the various processes of the identification method embodiments of the intelligent surface device described above, and achieves the same technical effects. When the communication device 1100 is an intelligent surface device, the program or instruction, when executed by the processor 1101, implements the various processes of the signal reflection method embodiments described above, and achieves the same technical effects. To avoid repetition, the various processes will not be described here again.

[0159] The terminal provided in the embodiments of the present application includes a processor and a communication interface. The processor is configured to implement each process of the identification method of the smart surface device. The communication interface is configured to communicate with an external communication device. The terminal embodiment corresponds to the method embodiment of the first communication device. Each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, Figure 12 A hardware structure diagram of a terminal according to an embodiment of the present application is shown in FIG. 12.

[0160] The terminal 1200 includes, but is not limited to, a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210.

[0161] Those skilled in the art can understand that the terminal 1200 can further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1210 through a power management system, so as to realize functions such as power management, discharge, and power consumption management through the power management system. Figure 12 The terminal structure shown in FIG. 12 does not constitute a limitation on the terminal. The terminal can include more or fewer components than those shown in the figure, or combine certain components, or arrange different components. Details are not described here.

[0162] It should be understood that in the embodiments of the present application, the input unit 1204 can include a graphics processing unit (GPU) 12041 and a microphone 12042. The graphics processing unit 12041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 can include a display panel 12061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 can include a touch detection device and a touch controller. The other input devices 12072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0163] In the embodiments of the present application, the radio frequency unit 1201 receives the downlink data from the network side device, and processes the data by the processor 1210. In addition, the radio frequency unit 1201 sends the uplink data to the network side device. Generally, the radio frequency unit 1201 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0164] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 1209 can include a high-speed random access memory, and can also include a non-transitory memory, which can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device.

[0165] The processor 1210 can include one or more processing units; optionally, the processor 1210 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1210.

[0166] The radio frequency unit 1201 is configured to send a first signal.

[0167] The processor 1210 is configured to obtain identification information related to the smart surface device, wherein the identification information is information obtained by detecting a backwave signal of the first signal by the terminal, or information obtained by detecting the backwave signal of the first signal by the second communication device and forwarding to the terminal.

[0168] In the embodiments of the present application, the terminal sends a first signal, the smart surface device receives and reflects a backwave signal of the first signal, and the identification information related to the smart surface device can be obtained by detecting the backwave signal by the terminal or the second communication device, so that the smart surface device can be identified without knowing the smart surface device.

[0169] Optionally, the radio frequency unit 1201 is further configured to send a first trigger signal, wherein the first trigger signal is used to trigger the intelligent surface device to adopt a specific reflection mode.

[0170] Optionally, the radio frequency unit 1201 is further configured to send first indication information to the intelligent surface device after the first communication device acquires the identification information, wherein the first indication information indicates the intelligent surface device to exit a specific reflection mode, and the specific reflection mode is a default reflection mode of the intelligent surface device.

[0171] Optionally, the processor 1210 is further configured to determine a second duration for monitoring the echo signal according to the maximum detection distance and / or a first duration for sending a single first signal; and monitor the echo signal in the second duration.

[0172] Optionally, the processor 1210 is further configured to monitor an echo signal of the first signal after sending the first signal, and determine whether there is an intelligent surface device at the emission angle and / or beam direction of the first signal according to the strength of the monitored echo signal.

[0173] Optionally, the processor 1210 is further configured to detect characteristic information of the echo signal, and identify identity information of the intelligent surface device according to the detection result, wherein the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

[0174] Optionally, the radio frequency unit 1201 is further configured to:

[0175] send second indication information to the second communication device, wherein the second indication information includes at least one of the following: an indication of starting echo monitoring, and a format of the first signal;

[0176] receive the identification information sent by the second communication device, wherein the identification information is obtained by monitoring and processing the echo signal of the first signal by the second communication device, and the identification information includes third indication information, wherein the third indication information is used to indicate whether there is an intelligent surface device at the emission angle and / or beam direction of the first signal.

[0177] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface, the processor is configured to implement the above-mentioned intelligent surface device identification method embodiments, and the communication interface is configured to communicate with external communication devices. The network side device embodiment corresponds to the above-mentioned first communication device side method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the network side device embodiment and can achieve the same technical effects.

[0178] Specifically, the embodiment of the present application also provides a network side device. As shown in the Figure 13 The network device 1300 includes an antenna 1301, a radio frequency device 1302, and a baseband device 1303. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302. The radio frequency device 1302 processes the received information and sends it out through the antenna 1301.

[0179] The above frequency band processing device can be located in the baseband device 1303. The method performed by the network side device in the above embodiment can be implemented in the baseband device 1303, which includes a processor 1304 and a memory 1305.

[0180] The baseband device 1303 may, for example, include at least one baseband board on which a plurality of chips are arranged, as shown in the Figure 13 One of the chips is, for example, the processor 1304, which is connected to the memory 1305 to call the program in the memory 1305 and perform the operations of the network device shown in the above method embodiment.

[0181] The baseband device 1303 can also include a network interface 1306 for interacting with the radio frequency device 1302. The interface is, for example, a common public radio interface (CPRI).

[0182] Specifically, the network side device of the embodiment of the present application also includes instructions or programs stored in the memory 1305 and executable on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to perform the method shown in the Figure 9 The modules shown in the above method embodiment perform the same technical effects, and thus are not described here again.

[0183] The embodiment of the present application also provides a readable storage medium having programs or instructions stored thereon. The programs or instructions are executed by a processor to implement each process of the determination method of the above smart surface device or to implement each process of the above signal reflection method, and achieve the same technical effects. To avoid repetition, the above is not described here again.

[0184] The processor is the processor in the communication device in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0185] The embodiment of the application further provides a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions to realize each process of the determination method of the smart surface device or to realize each process of the signal reflection method, and the same technical effects can be achieved. To avoid repetition, details are not described herein.

[0186] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0187] The embodiment of the application further provides a computer program / program product, which is stored in a non-transient storage medium, the program / program product is executed by at least one processor to realize each process of the determination method of the smart surface device or to realize each process of the signal reflection method, and the same technical effects can be achieved. To avoid repetition, details are not described herein.

[0188] It should be noted that, in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the application is not limited to the order of performing the functions as shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in a reverse order, for example, the described method can be performed in an order different from the described order, and various steps can be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0189] Those skilled in the art can clearly understand the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, also can be through hardware, but many cases the former is the better embodiment. Based on such understanding, the technical solutions of the present application essentially or say the part of the contribution to the prior art can be embodied in the form of computer software products, the computer software product is stored in a storage medium (such as ROM / RAM, disk, optical disc), including a number of instructions to make a communication device (may be a mobile phone, computer, server, air conditioner, or network equipment, etc.) executes the method described in various embodiments of the present application.

[0190] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, but not limited, those skilled in the art can make many forms without departing from the purpose of the present application and the scope of the claims under the inspiration of the present application, all belong to the protection of the present application.

Claims

1. A method for identifying intelligent surface devices, characterized in that, include: The first communication device sends a first signal; The first communication device acquires identification information related to the smart surface device, wherein the identification information is information obtained by the first communication device from detecting the echo signal of the first signal, or information obtained by the second communication device from detecting the echo signal of the first signal and forwarding it to the first communication device. The method further includes: the first communication device sending a first trigger signal, wherein the first trigger signal is used to trigger the smart surface device to adopt a specific reflection mode; The specific reflection modes include: a first reflection mode, wherein, in the first reflection mode, the smart surface device reflects the received signal using an angle from a pre-set set of beam forwarding angles; or... In the second reflection mode, the smart surface device reflects the received signal at an angle corresponding to the direction of the incoming wave.

2. The method according to claim 1, characterized in that, The first signal includes one of the following: Sensing signals used to achieve sensing functions; Communication signals used to transmit information; Integrated communication and sensing signals are used to realize sensing functions and transmit information.

3. The method according to claim 1, characterized in that, The first signal includes a control command, wherein the control command is used to control the reflection mode of the smart surface device reflecting the first signal.

4. The method according to claim 3, characterized in that, The control command is associated with at least one angle from a pre-set set of beam forwarding angles for the smart surface device.

5. The method according to claim 1, characterized in that, The first trigger signal is included in the first signal.

6. The method according to claim 1, characterized in that, After the first communication device acquires the identification information, the method further includes: The first communication device sends a first indication message to the smart surface device, wherein the first indication message indicates that the smart surface device exits a specific reflection mode.

7. The method according to any one of claims 1 to 6, characterized in that, The first signal includes identity indication information, wherein the identity indication information is used to indicate the identity of the first communication device.

8. The method according to claim 1, characterized in that, The first communication device or the second communication device monitors the echo signal of the first signal, including: The first communication device or the second communication device determines a second duration for listening to the echo signal based on the maximum detection distance and / or the first duration for sending a single first signal; During the second duration, the echo signal is monitored.

9. The method according to claim 1, characterized in that, If the smart surface device adopts a first reflection mode, and one first signal corresponds to each angle in the beam forwarding angle set, then the first duration for the first communication device to send a single first signal is at least greater than the total mode switching time required for the smart surface device to traverse each angle in the beam forwarding angle set.

10. The method according to claim 1, characterized in that, If the smart surface device adopts a first reflection mode, and one first signal corresponds to an angle in the beam forwarding angle set, then the number of first signals transmitted by the first communication device using the same angle and / or the same beam direction is at least greater than the number of angles in the beam forwarding angle set.

11. The method according to claim 10, characterized in that, The start time of the next first signal transmitted by the first communication device using the same angle and / or the same beam direction is later than the end time of the echo listening of the previous first signal.

12. The method according to any one of claims 1 to 6, 8 to 11, characterized in that, The first communication device acquires identification information, including: After sending the first signal, the first communication device listens to the echo signal of the first signal and determines whether a smart surface device exists at the transmission angle and / or beam direction of the first signal based on the intensity of the listened echo signal.

13. The method according to claim 12, characterized in that, The first communication device acquires identification information, further including: The first communication device detects the characteristic information of the echo signal and identifies the identity information of the smart surface device based on the detection result. The characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

14. The method according to any one of claims 1 to 6, 8 to 11, characterized in that, The first communication device acquires identification information, including: The first communication device sends a second indication message to the second communication device, wherein the second indication message includes at least one of the following: an indication to start echo monitoring, and the format of the first signal; The first communication device receives the identification information sent by the second communication device, wherein the identification information is obtained by the second communication device through monitoring and analysis of the echo signal of the first signal, and the identification information includes: third indication information, which is used to indicate whether a smart surface device exists at the transmission angle and / or beam direction of the first signal.

15. The method according to claim 14, characterized in that, The identification information also includes: the identity information of the smart surface device.

16. The method according to claim 14, characterized in that, The format of the first signal includes at least one of the following: the waveform of the first signal, sequence information, transmission angle, and beam direction.

17. The method according to claim 16, characterized in that, The identification information further includes: target transmission angle and / or target beam direction, wherein the target transmission angle and / or target beam direction is the transmission angle and / or beam direction of the first signal corresponding to the echo signal.

18. A signal reflection method, characterized in that, include: The intelligent surface device receives a first signal sent by a first communication device; The intelligent surface device reflects the first signal in a specific reflection mode to send an echo signal of the first signal. Before the smart surface device reflects the first signal in a specific reflection mode, the method further includes: receiving a first trigger signal sent by the first communication device, and setting the reflection mode of the smart surface device to the specific reflection mode; The specific reflection modes include: In the first reflection mode, the smart surface device reflects the received signal using an angle from a pre-set set of beam-forwarding angles; or... In the second reflection mode, the smart surface device reflects the received signal at an angle corresponding to the direction of the incoming wave.

19. The method according to claim 18, characterized in that, The first signal includes one of the following: Sensing signals used to achieve sensing functions; Communication signals used to transmit information; Integrated communication and sensing signals are used to realize sensing functions and transmit information.

20. The method according to claim 18, characterized in that, The first trigger signal is included in the first signal.

21. The method according to claim 18, characterized in that, Before the smart surface device reflects the first signal in a specific reflection mode, the method further includes: When there is no signal forwarding behavior, the intelligent surface device enters the specific reflection mode.

22. The method according to claim 21, characterized in that, After the smart surface device reflects the first signal in a specific reflection mode, the method further includes: The device receives a first indication message sent by the first communication device, wherein the first indication message indicates that the smart surface device exits a specific reflection mode; Stop using the specific reflection mode as instructed by the first instruction.

23. The method according to claim 18, characterized in that, The intelligent surface device reflects the first signal under a specific reflection mode, including: The intelligent surface device reflects the first signal according to the control command included in the first signal, using a reflection mode corresponding to the control command, wherein the angle at which the intelligent surface device reflects the first signal is at least one angle associated with the control command from a pre-set set of beam forwarding angles.

24. The method according to any one of claims 18 to 23, characterized in that, Before the smart surface device reflects the first signal in a specific reflection mode, the method further includes: It is determined that the identity indication information contained in the first signal is legitimate, and that the identity of the first communication device indicated by the identity indication information is legitimate.

25. The method according to claim 18, characterized in that, The smart surface device reflects the first signal in a specific reflection mode, including one of the following: The intelligent surface device acquires the direction of arrival of the first signal and reflects the first signal at an angle corresponding to the direction of arrival. The intelligent surface device performs traversal reflection according to each angle in the beam forwarding angle set for a received first signal; The smart surface device reflects at least one of the first signals received using an angle from the set of beam forwarding angles.

26. The method according to any one of claims 18 to 23, characterized in that, The intelligent surface device reflects the first signal under a specific reflection mode, including: The intelligent surface device reflects the first signal by changing its characteristic information according to a first rule, wherein the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

27. A device for identifying intelligent surface equipment, applied to a first communication device, characterized in that, The device includes: The transmitting module is used to transmit the first signal; The acquisition module is used to acquire identification information related to the smart surface device, wherein the identification information is information obtained by the first communication device from detecting the echo signal of the first signal, or information obtained by the second communication device from detecting the echo signal of the first signal and forwarding it to the first communication device. The sending module is also used for: Send a first trigger signal, wherein the first trigger signal is used to trigger the smart surface device to adopt a specific reflection mode; The specific reflection modes include: In the first reflection mode, the smart surface device reflects the received signal using an angle from a pre-set set of beam-forwarding angles; or... In the second reflection mode, the smart surface device reflects the received signal at an angle corresponding to the direction of the incoming wave.

28. The apparatus according to claim 27, characterized in that, The first signal includes one of the following: Sensing signals used to achieve sensing functions; Communication signals used to transmit information; Integrated communication and sensing signals are used to realize sensing functions and transmit information.

29. The apparatus according to claim 27, characterized in that, The first signal includes a control command, wherein the control command is used to control the reflection mode of the smart surface device reflecting the first signal.

30. The apparatus according to claim 27, characterized in that, The sending module is also used for: After the first communication device acquires the identification information, it sends a first instruction message to the smart surface device, wherein the first instruction message instructs the smart surface device to exit a specific reflection mode.

31. The apparatus according to any one of claims 27 to 30, characterized in that, The first signal includes identity indication information, wherein the identity indication information is used to indicate the identity of the first communication device.

32. The apparatus according to claim 27, characterized in that, The first communication device or the second communication device monitors the echo signal of the first signal, including: The first communication device or the second communication device determines a second duration for listening to the echo signal based on the maximum detection distance and / or the first duration for sending a single first signal; During the second duration, the echo signal is monitored.

33. The apparatus according to claim 27, characterized in that, If the smart surface device adopts a first reflection mode, and one first signal corresponds to each angle in the beam forwarding angle set, then the first duration for which the transmitting module transmits a single first signal is at least greater than the total mode switching time required for the smart surface device to traverse each angle in the beam forwarding angle set.

34. The apparatus according to claim 27, characterized in that, If the smart surface device adopts a first reflection mode, and one first signal corresponds to an angle in the beam forwarding angle set, then the number of first signals transmitted by the transmitting module using the same angle and / or the same beam direction is at least greater than the number of angles in the beam forwarding angle set.

35. The apparatus according to claim 34, characterized in that, The start time of the next first signal transmitted by the transmitting module using the same angle and / or the same beam direction is later than the end time of the echo monitoring of the previous first signal.

36. The apparatus according to any one of claims 27 to 30, 33 to 35, characterized in that, The acquisition module acquires identification information, including: After sending the first signal, the echo signal of the first signal is monitored, and the presence of a smart surface device is determined at the transmission angle and / or beam direction of the first signal based on the intensity of the monitored echo signal.

37. The apparatus according to claim 36, characterized in that, The acquisition module acquires the identification information, and also includes: The characteristic information of the echo signal is detected, and the identity information of the smart surface device is identified based on the detection result. The characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

38. The apparatus according to any one of claims 27 to 30, 33 to 35, characterized in that, The acquisition module acquires identification information, including: Send a second indication message to the second communication device, wherein the second indication message includes at least one of the following: an indication to start echo monitoring, and the format of the first signal; The identification information sent by the second communication device is received, wherein the identification information is obtained by the second communication device monitoring and processing the echo signal of the first signal, and the identification information includes: third indication information, which is used to indicate whether a smart surface device exists at the transmission angle and / or beam direction of the first signal.

39. A signal reflection device, applied to intelligent surface equipment, characterized in that, The device includes: The receiving module is used to receive the first signal sent by the first communication device; A reflection module is used to reflect the first signal in a specific reflection mode to send the echo signal of the first signal; The receiving module is also used for: Before the reflection module reflects the first signal in a specific reflection mode, it receives a first trigger signal sent by the first communication device and sets the reflection mode of the smart surface device to the specific reflection mode. The specific reflection modes include: In the first reflection mode, the smart surface device reflects the received signal using an angle from a pre-set set of beam-forwarding angles; or... In the second reflection mode, the smart surface device reflects the received signal at an angle corresponding to the direction of the incoming wave.

40. The apparatus according to claim 39, characterized in that, The first signal includes one of the following: Sensing signals used to achieve sensing functions; Communication signals used to transmit information; Integrated communication and sensing signals are used to realize sensing functions and transmit information.

41. The apparatus of claim 39, further comprising: The setting module is used to set the reflection mode of the smart surface to the specific reflection mode when the smart surface device is not performing signal forwarding behavior.

42. The apparatus according to claim 41, characterized in that, The receiving module is further configured to receive first indication information sent by the first communication device, wherein the first indication information indicates exiting the specific reflection mode; The setting module is also used to stop using the specific reflection mode according to the instructions of the first instruction information.

43. The apparatus according to claim 39, characterized in that, The reflection module reflects the first signal in a specific reflection mode, including: According to the control command included in the first signal, the first signal is reflected using a reflection mode corresponding to the control command, wherein the angle at which the smart surface device reflects the first signal is at least one angle associated with the control command from a pre-set set of beam forwarding angles.

44. The apparatus according to any one of claims 39 to 43, characterized in that, The device further includes: The determining module is configured to determine, before reflecting the first signal, the identity indication information contained in the first signal, and that the identity of the first communication device indicated by the identity indication information is legitimate.

45. The apparatus according to claim 44, characterized in that, The reflection module reflects the first signal in a specific reflection mode, including one of the following: Obtain the direction of arrival of the first signal, and reflect the first signal at an angle corresponding to the direction of arrival; For a received first signal, traverse reflection is performed according to each angle in the beam forwarding angle set; For at least one of the first signals received, reflection is performed using one of the angles in the set of beam forwarding angles.

46. ​​The apparatus according to any one of claims 39 to 43, characterized in that, The reflection module reflects the first signal in a specific reflection mode, including: According to the first rule, the first signal is reflected by changing its characteristic information, wherein the characteristic information includes at least one of the following: amplitude, phase, polarization, and orbital angular momentum information.

47. A communication device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method for determining a smart surface device as described in any one of claims 1 to 17.

48. A smart surface device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the signal reflection method as described in any one of claims 18 to 26.

49. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method for determining a smart surface device as described in any one of claims 1 to 17, or the steps of the method for signal reflection as described in any one of claims 18 to 26.

Images